Hekuang 70 excavator price
Publish: 2021-05-29 16:29:40
1. The two brands you choose are good. That's the general thing. We ordered a cat324 this year, with a price of 1.36 million yuan. Alas, it's too expensive.
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the denc blockchain design is divided into four main levels, including data layer, network communication layer, consensus verification layer and application layer, which are independent but inseparable from each other. The data and network layer encapsulates data block, related data encryption, timestamp, propagation and verification mechanism; The consensus layer is mainly the consensus algorithm of network nodes, and the incentive layer includes token issuing mechanism and distribution mechanism; Contract layer mainly encapsulates all kinds of scripts and smart contracts, which is the basis of denc programming. Application layer mainly encapsulates all kinds of application scenarios with DAPP as the core.
3. The factors that affect the classification effect are mainly divided into four aspects: equipment, ore properties, operation conditions and installation
the following is the installation method of spiral classifier to improve the output of spiral chute
1) the position and size of the upper and lower discharge outlets of the classifier
the bottom of the classifier tank is a semi-circular rectangular long tank with a sand return outlet at the bottom of the upper end and an overflow outlet at the lower end. The side wall near the middle of the tank is provided with a feeding mouth. Generally, the feeding mouth is 50 mm below the overflow surface. When the flow rate of the slurry is high, the feeding mouth should be 100 mm below the overflow surface to rece the influence of the flow rate on the temperature flow
the size of the lower opening of the classifier, the size of the lower opening of the classifier, the size of the upper opening of the classifier and the size of the upper opening of the classifier are made on site ring the installation of the equipment. In many concentrators, the size of the opening of the classifier is not adjusted properly ring the installation of the equipment, and the workers do not pay much attention to it ring the operation, which virtually affects the grinding operation. The lower opening of the classifier is low, which means that the deposit area is relatively large, so the amount of return sand will be large, and the grinding fineness will be relatively fine. The lower opening of the classifier is large, which means that the deposit area is relatively large, and the water flow is relatively gentle, so the amount of return sand will be large, and the overflow fineness will be relatively fine. The upper opening of the classifier is low, the amount of return sand is relatively large, and the overflow fineness is relatively fine. The upper opening of the classifier is large, the relative amount of return sand is relatively large, and the overflow fineness is relatively fine
2) the inclination angle of the classifier tank body
the inclination angle of the tank bottom is mainly determined by the necessary lifting height of the return sand water, and the limit is that the ore does not slide too much underground. The main structural parameter that can be changed in proction is the height of overflow weir, but this factor is seldom changed in normal times once it is determined in the early stage of proction
the inclination angle of the tank also affects the stirring degree of the spiral blade to the pulp, thus affecting the quality of the overflow. The inclination angle of the tank is small, the settling area of the classifier is large, and the overflow fineness is small; On the contrary, with the increase of the inclination angle of the tank, the settlement area decreases, the coarse-grained materials have more opportunities to slide down, and the overflow particle size becomes coarser
the inclination angle of the tank body is determined according to the process requirements, generally within 12 °- eighteen ° When the particle size is required to be fine, the small value is taken, otherwise the maximum value is taken
in a word, there are many factors that affect the grading effect of the spiral classifier, and most of them restrict each other. Therefore, in the actual proction, technicians should observe and analyze more, find out the main influencing factors and adjust them, so as to effectively solve the practical problems existing in the proction.
the following is the installation method of spiral classifier to improve the output of spiral chute
1) the position and size of the upper and lower discharge outlets of the classifier
the bottom of the classifier tank is a semi-circular rectangular long tank with a sand return outlet at the bottom of the upper end and an overflow outlet at the lower end. The side wall near the middle of the tank is provided with a feeding mouth. Generally, the feeding mouth is 50 mm below the overflow surface. When the flow rate of the slurry is high, the feeding mouth should be 100 mm below the overflow surface to rece the influence of the flow rate on the temperature flow
the size of the lower opening of the classifier, the size of the lower opening of the classifier, the size of the upper opening of the classifier and the size of the upper opening of the classifier are made on site ring the installation of the equipment. In many concentrators, the size of the opening of the classifier is not adjusted properly ring the installation of the equipment, and the workers do not pay much attention to it ring the operation, which virtually affects the grinding operation. The lower opening of the classifier is low, which means that the deposit area is relatively large, so the amount of return sand will be large, and the grinding fineness will be relatively fine. The lower opening of the classifier is large, which means that the deposit area is relatively large, and the water flow is relatively gentle, so the amount of return sand will be large, and the overflow fineness will be relatively fine. The upper opening of the classifier is low, the amount of return sand is relatively large, and the overflow fineness is relatively fine. The upper opening of the classifier is large, the relative amount of return sand is relatively large, and the overflow fineness is relatively fine
2) the inclination angle of the classifier tank body
the inclination angle of the tank bottom is mainly determined by the necessary lifting height of the return sand water, and the limit is that the ore does not slide too much underground. The main structural parameter that can be changed in proction is the height of overflow weir, but this factor is seldom changed in normal times once it is determined in the early stage of proction
the inclination angle of the tank also affects the stirring degree of the spiral blade to the pulp, thus affecting the quality of the overflow. The inclination angle of the tank is small, the settling area of the classifier is large, and the overflow fineness is small; On the contrary, with the increase of the inclination angle of the tank, the settlement area decreases, the coarse-grained materials have more opportunities to slide down, and the overflow particle size becomes coarser
the inclination angle of the tank body is determined according to the process requirements, generally within 12 °- eighteen ° When the particle size is required to be fine, the small value is taken, otherwise the maximum value is taken
in a word, there are many factors that affect the grading effect of the spiral classifier, and most of them restrict each other. Therefore, in the actual proction, technicians should observe and analyze more, find out the main influencing factors and adjust them, so as to effectively solve the practical problems existing in the proction.
4. maximum? If things go to extremes, we advise you not to try. Because the working conditions are different, the excavator can slide down without walking. But it's easy to turn over uphill. The angle has not been studied. Pay attention to safety
5. The world's first large slope roadheader
on April 25, 2007, dozens of coal instry experts from Hegang coal instry, Huaibei mining instry, Shenyang coal instry, Jinniu energy, Shanxi and other coal instry groups were working under the main inclined shaft with a slope of 25 degrees and a footage of about 1000 meters in Banshi coal mine, Hunchun, Jilin, Is interested in investigating a shape and conventional procts are not the same as the roadheader
the crawler claws of this roadheader firmly grasp the very steep ground. The first transport machine is longer than the conventional one. There are two oil cylinders on both sides of the rear of the machine, and the cutting head can cut the rock freely. The machine does not need to shift at all when positioning and cutting. This is EBZ160 (CD) large slope roadheader developed and manufactured by Shenyang Sany Heavy Equipment Co., Ltd., which has been working in Banshi coal mine for four months
SUN Jingchun, deputy director of Banshi coal mine, said that the large slope roadheader entered the site in December 2006, and now the cumulative footage is 730 meters. According to this efficiency, Banshi coal mine is expected to be put into operation in August this year, 16 months ahead of the expected construction period
slate mine is a key project in Jilin Province ring the 11th Five Year Plan period, with a total investment of 510 million yuan and a proction capacity of 900000 tons. As a shallow coal seam, the main inclined shaft is designed to be driven downward. On the slope of 25 degrees, it is necessary to drive 250 meters. The parameters of conventional roadheader stipulate that its maximum climbing capacity is 16 degrees. In fact, it is very difficult to really cut and collect materials on the slope of more than 10 degrees. At present, there is no precedent in the world for tunneling on such a large slope
Liang Jianyi, President of Sany Shenyang Research Institute, said at the scene that rock roadway excavation has always been a worldwide problem, especially the development of large slope rock roadway. During the use of the equipment, some failures will inevitably occur, such as large slope backward, crawler grabbing and the connection between the rear support and the body. Now Sany Heavy equipment is the second and third roadheader with large slope proced by Hunchun mining instry, which has been improved. The main points are as follows: using high teeth to strengthen the crawler plate, so that the crawler climbing problem can be improved and solved; Further increase the aggregate capacity of loading star wheel to improve the efficiency of aggregate transportation; Adopt high reliability inner spray seal structure to prevent early failure. Improve the ability of car return
safety, reliability, high efficiency and humanization are the proct design concepts of Sany Heavy Equipment Co., Ltd. the large slope roadheader has made significant technical improvements on the basis of the traditional EBZ160 roadheader, and applied 10 patented technologies
the leader of domestic tunneling technology
what makes Sany Heavy equipment become the leader of domestic tunneling technology“ The concept of "quality changes the world", "everything comes from innovation" and the work style of "disease and slow as hatred" make Sany Heavy equipment become a rising star in the coal machinery instry
since the establishment of Sany Heavy Equipment Co., Ltd. in 2004, the development goal of the company has been focused on the development and manufacture of complete sets of coal mining equipment. General manager Wu Jialiang said that revitalizing the old instrial base and accelerating national energy construction provide double opportunities for Sany Heavy equipment
the 11th five year development plan of coal instry clearly proposes that by 2010, the mechanization degree of large and medium-sized coal mines in China will reach 95% and 80% respectively. However, the severe reality is that the mechanization degree of state-owned key coal mines is 77.78%, and the comprehensive mechanization degree of coal mining is less than 63%; The degree of tunneling mechanization is 23%, while the comprehensive degree of tunneling mechanization (bolt, excavation and protection, excavation and drilling) is only 18.03%. Generally speaking, compared with developed countries, the index lags behind about 10-15 years.
on April 25, 2007, dozens of coal instry experts from Hegang coal instry, Huaibei mining instry, Shenyang coal instry, Jinniu energy, Shanxi and other coal instry groups were working under the main inclined shaft with a slope of 25 degrees and a footage of about 1000 meters in Banshi coal mine, Hunchun, Jilin, Is interested in investigating a shape and conventional procts are not the same as the roadheader
the crawler claws of this roadheader firmly grasp the very steep ground. The first transport machine is longer than the conventional one. There are two oil cylinders on both sides of the rear of the machine, and the cutting head can cut the rock freely. The machine does not need to shift at all when positioning and cutting. This is EBZ160 (CD) large slope roadheader developed and manufactured by Shenyang Sany Heavy Equipment Co., Ltd., which has been working in Banshi coal mine for four months
SUN Jingchun, deputy director of Banshi coal mine, said that the large slope roadheader entered the site in December 2006, and now the cumulative footage is 730 meters. According to this efficiency, Banshi coal mine is expected to be put into operation in August this year, 16 months ahead of the expected construction period
slate mine is a key project in Jilin Province ring the 11th Five Year Plan period, with a total investment of 510 million yuan and a proction capacity of 900000 tons. As a shallow coal seam, the main inclined shaft is designed to be driven downward. On the slope of 25 degrees, it is necessary to drive 250 meters. The parameters of conventional roadheader stipulate that its maximum climbing capacity is 16 degrees. In fact, it is very difficult to really cut and collect materials on the slope of more than 10 degrees. At present, there is no precedent in the world for tunneling on such a large slope
Liang Jianyi, President of Sany Shenyang Research Institute, said at the scene that rock roadway excavation has always been a worldwide problem, especially the development of large slope rock roadway. During the use of the equipment, some failures will inevitably occur, such as large slope backward, crawler grabbing and the connection between the rear support and the body. Now Sany Heavy equipment is the second and third roadheader with large slope proced by Hunchun mining instry, which has been improved. The main points are as follows: using high teeth to strengthen the crawler plate, so that the crawler climbing problem can be improved and solved; Further increase the aggregate capacity of loading star wheel to improve the efficiency of aggregate transportation; Adopt high reliability inner spray seal structure to prevent early failure. Improve the ability of car return
safety, reliability, high efficiency and humanization are the proct design concepts of Sany Heavy Equipment Co., Ltd. the large slope roadheader has made significant technical improvements on the basis of the traditional EBZ160 roadheader, and applied 10 patented technologies
the leader of domestic tunneling technology
what makes Sany Heavy equipment become the leader of domestic tunneling technology“ The concept of "quality changes the world", "everything comes from innovation" and the work style of "disease and slow as hatred" make Sany Heavy equipment become a rising star in the coal machinery instry
since the establishment of Sany Heavy Equipment Co., Ltd. in 2004, the development goal of the company has been focused on the development and manufacture of complete sets of coal mining equipment. General manager Wu Jialiang said that revitalizing the old instrial base and accelerating national energy construction provide double opportunities for Sany Heavy equipment
the 11th five year development plan of coal instry clearly proposes that by 2010, the mechanization degree of large and medium-sized coal mines in China will reach 95% and 80% respectively. However, the severe reality is that the mechanization degree of state-owned key coal mines is 77.78%, and the comprehensive mechanization degree of coal mining is less than 63%; The degree of tunneling mechanization is 23%, while the comprehensive degree of tunneling mechanization (bolt, excavation and protection, excavation and drilling) is only 18.03%. Generally speaking, compared with developed countries, the index lags behind about 10-15 years.
6. The maximum gradient on the railway line is called the limited gradient in the section of single traction. The design gradient of the vertical section shall not be greater than the maximum gradient. If the maximum gradient is exceeded, the freight train with traction quality calculated according to the limited gradient will run below the calculated speed on the continuous uphill, resulting in slow running or stoppage accidents
7. 1. Test instrument: A. cash meter; b. Steel tape (50m); c. Benchmarking; d. Engine tachometer; e. Inclinometer
2. Road conditions:
the gradient of the test ramp should be close to the maximum gradient of the test vehicle
the length of the ramp shall not be less than 25m. There shall be a straight section of 8-10m in front of the ramp. The pavement with a slope greater than or equal to 30% shall be paved with cement, and the ramp with a slope less than 30% can be paved with asphalt. A speed measuring section of 10m shall be set in the middle of the ramp. Safety devices must be installed for longitudinal slopes greater than 40%< (1) the transmission of the test vehicle is in the lowest gear, the transfer case is also in the lowest gear, all wheel drive, and stop on the straight road near the road
(2) after starting, fully open the throttle for climbing; When the test vehicle is on the ramp, stop the vehicle, put the transmission into neutral, stop the engine for 2 minutes, and then start climbing
(3) measure and record the time of passing the speed measuring road section and the engine speed
(4) ring the climbing process, monitor the working condition of each instrument. After climbing to the top of the slope, check whether there is any abnormal phenomenon in each part, and make detailed records.
2. Road conditions:
the gradient of the test ramp should be close to the maximum gradient of the test vehicle
the length of the ramp shall not be less than 25m. There shall be a straight section of 8-10m in front of the ramp. The pavement with a slope greater than or equal to 30% shall be paved with cement, and the ramp with a slope less than 30% can be paved with asphalt. A speed measuring section of 10m shall be set in the middle of the ramp. Safety devices must be installed for longitudinal slopes greater than 40%< (1) the transmission of the test vehicle is in the lowest gear, the transfer case is also in the lowest gear, all wheel drive, and stop on the straight road near the road
(2) after starting, fully open the throttle for climbing; When the test vehicle is on the ramp, stop the vehicle, put the transmission into neutral, stop the engine for 2 minutes, and then start climbing
(3) measure and record the time of passing the speed measuring road section and the engine speed
(4) ring the climbing process, monitor the working condition of each instrument. After climbing to the top of the slope, check whether there is any abnormal phenomenon in each part, and make detailed records.
8. The maximum gradient IMAX of the car reflects the climbing ability of the car. It refers to the maximum gradient that a car can climb on a good road with the lowest forward gear under the condition of full load (or a certain load mass) and no wind
IMAX of general off-road vehicles can reach 60%, that is 31% ° Around
some countries also stipulate that the car can drive at a certain speed on the common ramp to show the climbing ability of the car. For example, it is required that the single vehicle can run at a speed of 60km / h on a 3% slope.
IMAX of general off-road vehicles can reach 60%, that is 31% ° Around
some countries also stipulate that the car can drive at a certain speed on the common ramp to show the climbing ability of the car. For example, it is required that the single vehicle can run at a speed of 60km / h on a 3% slope.
9. Haven't you been there? How did you take a bath before? Generally, you can go first to pay for the ticket, then you can take the slippers (if you bring them with you, don't take them), and then go in. There are compartments or public rooms in it. You can go wherever you are arranged. Then I take off my clothes and I have my own cupboard. After taking off, you can wash it.
10. 1. According to the nature of deposits, the types of deposit accounts are determined. Foreign currency savings account can be divided into foreign exchange account (cash account) and foreign currency account (cash account). Foreign exchange account refers to the freely convertible foreign exchange savings account that is remitted or brought in from abroad and held by domestic residents; The foreign currency account refers to the savings account deposited in the freely convertible foreign currency cash held by foreign carriers or domestic residents
2. Foreign currency cash cannot be converted into cash and deposited into cash deposit
3. The foreign exchange funds in the foreign exchange cash account can be transferred into the same foreign exchange account in China with my valid identity card, and the transfer of funds between different foreign exchange accounts is not allowed
4. No matter the amount of foreign currency savings under capital account, cash withdrawal and RMB exchange must be approved by the State Administration of foreign exchange
5. For indivial residents to deposit their foreign exchange income into their foreign exchange accounts, the following rules should be followed: if they deposit less than 150000 US dollars at one time, they should go to the bank directly; Those who deposit more than 50000 US dollars (including 50000 US dollars) at one time must provide the bank with a true identity certificate, which shall be handled after the bank registers and records.
2. Foreign currency cash cannot be converted into cash and deposited into cash deposit
3. The foreign exchange funds in the foreign exchange cash account can be transferred into the same foreign exchange account in China with my valid identity card, and the transfer of funds between different foreign exchange accounts is not allowed
4. No matter the amount of foreign currency savings under capital account, cash withdrawal and RMB exchange must be approved by the State Administration of foreign exchange
5. For indivial residents to deposit their foreign exchange income into their foreign exchange accounts, the following rules should be followed: if they deposit less than 150000 US dollars at one time, they should go to the bank directly; Those who deposit more than 50000 US dollars (including 50000 US dollars) at one time must provide the bank with a true identity certificate, which shall be handled after the bank registers and records.
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