Stope face crossheading bunching pulling and moving device and method

Abstract

The invention relates to the technical field of crossheading bunching pulling and moving devices, in particular to a crossheading bunching pulling and moving device and method for a stope face. Comprising a valve body, and the valve body is fixedly connected with symmetrically-distributed liquid supply pipelines and symmetrically-distributed load pipelines; the electric rotating shaft is installed on the valve body, the electric rotating shaft is fixedly connected with a valve element, and the valve element is fixedly connected with first pipelines which are symmetrically distributed and second pipelines which are symmetrically distributed; the control terminal is arranged on the valve body; the liquid storage barrel is fixedly connected into the valve body, a piston rod is arranged in the liquid storage barrel, and the piston rod is connected with a pressed part in a sliding mode. A traditional handle operating valve is replaced with electromagnetic control, hydraulic impact is buffered by arranging the liquid storage barrel, the piston rod and the pressed part, energy contained in hydraulic oil is consumed, then the impact force of the hydraulic oil is reduced, the probability that a hydraulic pipeline vibrates or is thrown out to hurt people is reduced, and the safety of the device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of a device for pulling and moving a series of vehicles in a chute, and in particular to a device and method for pulling and moving a series of vehicles in a chute of a mining working face. Background Art

[0002] The chute car is an important equipment used to transport materials or mechanical equipment in the chute of the underground coal mining face. The unpowered chute car usually needs to be driven by a special pulling device. The pulling device of the chute car usually consists of a winch, a hydraulic motor and a matching hydraulic system. The operator controls the hydraulic valve by the handle to control the hydraulic system. Every time the hydraulic valve is opened, closed or reversed, a water hammer phenomenon (also known as hydraulic shock) will be caused in the hydraulic system. Under the action of the water hammer, the hydraulic oil will impact the hydraulic valve, causing vibration and wear of the internal components of the hydraulic valve, affecting the service life of the hydraulic valve. When the hydraulic shock is strong, it will also cause the loosely fixed hydraulic pipeline in the hydraulic system to swing suddenly, posing a safety hazard to nearby workers. When the pipeline swings, it will also damage the connecting joints, causing leakage risks. Summary of the invention

[0003] In order to overcome the disadvantage that the hydraulic valves in the existing pulling and moving devices will cause water hammer phenomenon every time they are opened, closed or changed, thus affecting the service life of the existing hydraulic valves, the present invention provides a pulling and moving device and method for a mining working face along the chute.

[0004] The technical solution is as follows: A device for pulling and moving a vehicle in a slot of a mining face, comprising: a valve body, in which symmetrically distributed liquid supply pipes and symmetrically distributed load pipes are fixedly connected; an electric rotating shaft, installed on the valve body, in which a valve core is fixedly connected, and the valve core is rotatably connected to the valve body, in which a symmetrically distributed first pipe and a symmetrically distributed second pipe are fixedly connected, and the first pipe and the second pipe are both used to connect adjacent liquid supply pipes and adjacent load pipes; a control terminal, arranged on the outside of the valve body and electrically connected to the electric rotating shaft; a liquid storage barrel, fixedly connected to the valve body, in which a first connecting pipe is fixedly connected and connected to the liquid storage barrel, and the first connecting pipe is connected to the adjacent liquid supply pipe, and a piston rod is arranged in the liquid storage barrel, and the piston rod is slidably connected to a pressure-bearing part, and a first elastic part is installed between the two, and the pressure-bearing part is slidably connected to the liquid storage barrel.

[0005] Preferably, the flow area at both ends of one of the first pipes is larger than the flow area at both ends of the other first pipe, and the flow area at both ends of one of the second pipes is larger than the flow area at both ends of the other second pipe.

[0006] Preferably, it also includes: a second connecting pipe, fixedly connected to and connected to the liquid supply pipe that is not connected to the first connecting pipe, the second connecting pipe is fixedly connected to and connected to a plurality of connecting short pipes distributed at intervals, the connecting short pipes are connected to the liquid storage barrel, and the pressure-bearing member separates the connection between adjacent connecting short pipes and the liquid storage barrel.

[0007] Preferably, the flow area of ​​the connecting short pipe is less than one tenth of the flow area of ​​the liquid supply pipe, and the flow area of ​​the second connecting pipe is less than one third of the flow area of ​​the liquid supply pipe.

[0008] Preferably, it also includes: a pushing component, which is arranged in the valve body and is used to push the piston rod to move, and the pushing component includes: a swing rod, which is rotatably connected in the valve body, the piston rod is slidably connected to the liquid storage barrel, and the piston rod is slidably connected to the swing rod; a sliding member, which is slidably connected in the valve body, and a second elastic member is installed therebetween, and the sliding member is slidably connected to the swing rod; an extrusion member, which is fixedly connected to the outer side of the electric rotating shaft, the extrusion member is fixedly connected to the valve core, and a protrusion is arranged on the outer side of the extrusion member, and the protrusion on the extrusion member is used to squeeze the sliding member to move.

[0009] Preferably, it also includes: an adjusting mechanism, which is arranged in the valve body and is used to reduce the impact of the liquid on the load pipeline, and the adjusting mechanism includes: a balancing cylinder, which is fixed in the valve body, and two cavities are arranged in the balancing cylinder; there are two third communicating pipes, both of which are fixed to the outside of the balancing cylinder, and the third communicating pipes are connected with adjacent cavities in the balancing cylinder, and the third communicating pipes are connected with the adjacent load pipelines; a moving part, which is slidably connected in the balancing cylinder; there are two connecting components, both of which are arranged in the valve body, and are used to make the liquid in the two cavities in the balancing cylinder flow outward.

[0010] Preferably, the connecting component includes: a fourth connecting pipe, fixedly connected to the valve body, one end of the fourth connecting pipe is connected to a cavity in the balancing cylinder, and the other end is connected to the load pipe adjacent to another cavity in the balancing cylinder, and the moving part separates the connection between the adjacent fourth connecting pipe and the balancing cylinder; a sliding plate, slidably connected to the adjacent cavity on the balancing cylinder, and a third elastic part is installed between the sliding plate and the balancing cylinder, and the sliding plate is used to squeeze the moving part to move; a limiting component is arranged on the outside of the balancing cylinder, and is used to limit the moving part.

[0011] Preferably, an electric push rod is fixedly connected to the outer side of the balancing cylinder, the telescopic end of the electric push rod penetrates the balancing cylinder, and the telescopic end of the electric push rod and the moving part are both equipped with magnets that attract each other.

[0012] Preferably, the limiting assembly includes: a fixed shell, fixedly connected to the outer side of the balancing cylinder, a limiting member slidably connected inside the fixed shell, and a fourth elastic member is installed between the two, and the limiting member penetrates the balancing cylinder; a connecting hose, fixedly connected and connected to a side of the fixed shell close to the balancing cylinder, and the connecting hose is connected to the adjacent load pipeline; a fixed block, fixedly connected to the moving part, and the limiting member is used to limit the fixed block.

[0013] A method for pulling and moving a vehicle in a mining face along a chute is applied to the above-mentioned device for pulling and moving a vehicle in a chute of a mining face. The specific method is as follows:

[0014] S1: The control terminal controls the electric shaft to drive the valve core to rotate. The electric shaft drives the piston rod to move through the extrusion part, the sliding part, and the swing rod, so that the first elastic part on the pressure-bearing part is compressed and stored, and the flow path of the hydraulic oil is controlled, so that the hydraulic motor drives the winch to work. The winch moves along the trough by dragging the car through the wire rope, and the moving part moves to the side of the load pipeline with low pressure;

[0015] S2: When the control terminal controls the valve core to rotate and the hydraulic motor is turned off, the electric shaft drives the extrusion member to rotate, and the extrusion member drives the piston rod to move through the sliding member and the swing rod, so that the first elastic member on the pressure-bearing member is released;

[0016] S3: When water hammer occurs at the liquid supply pipeline of the pressure-bearing part, the hydraulic oil enters the liquid storage barrel under the action of the water hammer, pushing the pressure-bearing part to move, the first elastic member on the pressure-bearing part is compressed to store force, and the pressure-bearing part releases the blockage of the adjacent connecting short pipe during the movement, and the hydraulic oil flows back from the liquid storage barrel to the hydraulic system through the second connecting pipeline;

[0017] S4: When the load pipeline generates negative pressure, the moving part moves toward the load pipeline generating negative pressure under the action of the negative pressure, and squeezes the hydraulic oil in the balance cylinder into the load pipeline generating negative pressure. When the moving part moves to the end, the cavity in the balance cylinder is connected with the load pipeline generating negative pressure through the adjacent fourth connecting pipeline.

[0018] S5: When the water hammer and negative pressure disappear, the sliding plate is pushed by the third elastic member on it to squeeze the moving member to reset, and the pressure-bearing member is reset under the action of the adjacent third elastic member.

[0019] The present invention has at least the following beneficial effects: the present invention replaces the traditional handle-operated valve with electromagnetic control, and buffers the hydraulic impact by arranging a liquid storage barrel, a piston rod and a pressure-bearing part, consumes the energy contained in the hydraulic oil, thereby reducing the impact force of the hydraulic oil, reducing the probability of hydraulic pipeline vibration or being thrown out and injuring people, and increasing the safety of the device.

[0020] The present invention adds a second communicating pipe, and while utilizing the first elastic member on the pressure-bearing member to buffer the hydraulic oil, the hydraulic oil is made to flow along the second communicating pipe, thereby further reducing the energy contained in the hydraulic oil.

[0021] The present invention adds a balancing cylinder and a moving part to balance the negative pressure generated at the load pipeline when the valve core rotates to close, thereby reducing the probability of water hammer phenomenon occurring at the load end due to negative pressure backflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 is a cross-sectional view of the valve body of the present invention;

[0024] Figure 3 It is a three-dimensional structural schematic diagram of the liquid supply pipeline, the load pipeline and the liquid storage tank of the present invention;

[0025] Figure 4 It is a three-dimensional structural schematic diagram of the liquid storage barrel, piston rod and pressure-bearing member of the present invention;

[0026] Figure 5 It is a cross-sectional view of the valve core and the liquid storage barrel of the present invention;

[0027] Figure 6 An exploded view of the first pipeline and the second pipeline of the present invention;

[0028] Figure 7 It is a cross-sectional view of the liquid storage barrel, the pressure-bearing member and the second connecting pipe of the present invention;

[0029] Figure 8 It is a three-dimensional structural schematic diagram of the valve core, piston rod and swing rod of the present invention;

[0030] Fig. 9 It is a three-dimensional structural schematic diagram of the valve core, piston rod and balance cylinder of the present invention;

[0031] Fig.10 is a cross-sectional view of the balancing cylinder and the load pipe of the present invention;

[0032] Fig.11 It is a cross-sectional view of the balancing cylinder and the moving part of the present invention;

[0033] Fig.12 It is a three-dimensional structural schematic diagram of the fixing shell, the limiting member and the fixing block of the present invention.

[0034] Explanation of the reference numerals: 1-valve body, 101-liquid supply pipeline, 102-load pipeline, 103-control terminal, 2-electric rotating shaft, 3-valve core, 301-first pipeline, 302-second pipeline, 4-liquid storage barrel, 41-first connecting pipeline, 5-piston rod, 51-pressure-bearing member, 6-second connecting pipeline, 61-connecting short pipe, 7-swing rod, 71-sliding member, 72-extrusion member, 8-balancing cylinder, 81-third connecting pipeline, 82-moving member, 9-fourth connecting pipeline, 91-sliding plate, 10-electric push rod, 11-fixed shell, 111-limiting member, 112-connecting hose, 113-fixed block, 100-oil inlet end, 200-oil return end, 300-first working end, 400-second working end. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] The existing chute string car pulling and moving device in coal mines is usually controlled by a handle. The staff uses the handle to control the hydraulic valve in the pulling and moving device to open, close or reverse, so as to control the rotation of the winch through the hydraulic system, and the winch pulls the chute string car to move. However, each time the hydraulic valve is controlled to open, close or reverse, water hammer will be caused in the hydraulic system. The hydraulic oil will impact the hydraulic valve under the action of the water hammer, aggravating the wear rate of the internal components of the hydraulic valve, thereby reducing the service life of the hydraulic valve. When the force of the hydraulic impact is large, it will also cause the loosely fixed hydraulic pipeline in the hydraulic system to be suddenly thrown out, causing harm to nearby personnel. At the same time, the connection joints between the hydraulic pipeline and the mechanical device may be pulled loose, causing hydraulic oil leakage.

[0037] A kind of pulling device for the mining face along the chute, referring to Figure 1-Figure 7, including: a valve body 1, in which a symmetrically distributed liquid supply pipeline 101 and a symmetrically distributed load pipeline 102 are fixedly connected; an electric shaft 2, installed on the valve body 1, the electric shaft 2 is fixedly connected with a valve core 3, the valve core 3 is rotatably connected to the valve body 1, a symmetrically distributed first pipeline 301 and a symmetrically distributed second pipeline 302 are fixedly connected to the valve core 3, the first pipeline 301 and the second pipeline 302 are both used to connect adjacent liquid supply pipelines 101 and adjacent load pipelines 102; a control terminal 103, arranged on the outside of the valve body 1, and electrically connected to the electric shaft 2; a liquid storage barrel 4, fixedly connected to the valve body 1, the liquid storage barrel 4 is fixedly connected and connected with a first connecting pipeline 41, the first connecting pipeline 41 is connected to the adjacent liquid supply pipeline 101, a piston rod 5 is arranged in the liquid storage barrel 4, the piston rod 5 is slidably connected with a pressure-bearing member 51, and a first elastic member is installed between the two, and the pressure-bearing member 51 is slidably connected to the liquid storage barrel 4.

[0038] As a preference, refer to Figure 6 , the flow area at both ends of one of the first pipes 301 is greater than the flow area at both ends of the other first pipe 301 , and the flow area at both ends of one of the second pipes 302 is greater than the flow area at both ends of the other second pipe 302 .

[0039] In the above scheme, the hydraulic system includes a hydraulic oil tank, a hydraulic pump, a valve body 1 and a hydraulic motor, wherein the hydraulic oil tank, the hydraulic pump and the hydraulic motor are not shown in the figure. The hydraulic motor is used to drive the winch to work. The hydraulic motor rotates forward to drive the winch to reel in the wire rope to pull the chute string car toward the winch. The hydraulic motor rotates backward to drive the winch to release the wire rope, so that the chute string car moves away from the winch (usually used in downhill situations). The electric shaft 2 and the control terminal 103 replace the control pull rod of the traditional hydraulic valve, and one control terminal 103 can remotely operate multiple electric shafts 2 to work, combining the string car pulling and moving device with the intelligent electro-hydraulic control to make the pulling and moving device more intelligent and modern. By separating the valve body 1 from the control terminal 103, the hydraulic pipeline and wire rope of the pulling and moving device are separated from the staff who operate the control terminal 103, making the staff's operating environment safer and more orderly, providing optimization space for the appearance of the string car pulling and moving device, and reducing the probability of hydraulic pipelines flying and injuring people under strong vibration.

[0040] The two fluid supply pipes 101 are respectively divided into an oil inlet end 100 (P end) and an oil return end 200 (T end), the oil inlet end 100 is located on the left side, and the oil return end 200 is located on the right side, the oil inlet end 100 and the oil return end 200 are respectively connected with the oil outlet end of the hydraulic pump and the hydraulic oil tank, the two load pipes 102 are respectively divided into a first working end 300 (A end) and a second working end 400 (B end), the first working end 300 and the second working end 400 are respectively connected with the input end and the output end of the hydraulic motor, when the hydraulic oil flows along the oil inlet end 100, the first working end 300, the hydraulic motor, the second working end 400 to the oil return end 200, the hydraulic motor rotates forward, and when the hydraulic oil flows along the oil inlet end 100, the second working end 400, the hydraulic motor, the first working end 300 to the oil return end 200, the hydraulic motor rotates reversely.

[0041] The shapes of the first pipe 301 and the second pipe 300 are as follows: Figure 6 As shown, a first pipeline 301 is used to connect the oil inlet end 100 and the first working end 300, another first pipeline 301 is used to connect the oil return end 200 and the second working end 400, a second pipeline 302 is used to connect the oil inlet end 100 and the second working end 400, and another first pipeline 301 is used to connect the oil return end 200 and the first working end 300. By increasing the flow area at both ends of the first pipeline 301 and the second pipeline 302 connected to the oil return end 200, the timing of disconnecting the hydraulic oil from the oil return end 200 is postponed, thereby reducing the impact force of the hydraulic oil returning from the hydraulic motor, and the first elastic member on the pressure member 51 is a spring.

[0042] The working process of this embodiment is as follows: when the staff needs to control the hydraulic motor to rotate forward, control the winch to reel in the wire rope, and pull the chute string car toward the winch, the staff controls the electric shaft 2 to work through the control terminal 103, the electric shaft 2 drives the valve core 3 to rotate, and the valve core 3 drives the first pipeline 301 and the second pipeline 302 to rotate together, so that the oil inlet end 100 and the oil return end 200 are respectively connected to the adjacent first pipeline 301, and the first working end 300 and the second working end 400 are connected to the adjacent first pipeline 301 at the same time, and the hydraulic oil flows from the oil inlet end 100, the first working end 300, the hydraulic motor, the second working end 400 to the oil return end 200, the hydraulic motor rotates forward to drive the winch to reel in the wire rope, and the chute string car moves toward the winch.

[0043] When the chute car moves to the vicinity of the winch, the staff controls the electric shaft 2 to drive the valve core 3 to rotate through the control terminal 103, and the valve core 3 drives the first pipeline 301 and the second pipeline 302 to rotate together, so that the oil inlet end 100 and the oil return end 200 are respectively offset from the adjacent first pipeline 301. At this time, the oil inlet end 100 is first offset from the adjacent first pipeline 301, and the flow path of the hydraulic oil in the oil inlet end 100 is cut off. The subsequent flowing hydraulic oil gradually forms high-pressure hydraulic oil that propagates toward the valve core 3 (that is, water hammer, and the high-pressure hydraulic oil fluctuates forward in a wave shape). When the hydraulic oil moves to the first connecting pipeline 41 under the action of the water hammer, the high-pressure hydraulic oil flows into the liquid storage barrel 4 from the first connecting pipeline 41, and the pressure in the liquid storage barrel 4 increases. , the hydraulic oil squeezes the pressure-bearing part 51 to move to the right, and the first elastic part on the pressure-bearing part 51 is compressed and stored. As the high-pressure hydraulic oil gradually flows into the liquid storage barrel 4, the energy contained in the hydraulic oil is gradually transferred to the first elastic part on the pressure-bearing part 51, so that the energy contained in the high-pressure hydraulic oil is reduced, and the pressure of the high-pressure hydraulic oil is reduced synchronously, and the impact force contained in it is reduced synchronously. When the energy of the high-pressure hydraulic oil wave is consumed in the fluctuation process, the hydraulic oil pressure gradually returns to its initial state. At this time, the first elastic part on the pressure-bearing part 51 gradually pushes the pressure-bearing part 51 to reset under the action of its own elastic force, and squeezes the hydraulic oil to flow back to the hydraulic system along the oil inlet end 100 until the pressure-bearing part 51 is completely reset and the hydraulic oil in the oil inlet end 100 returns to a normal state.

[0044] When the oil inlet end 100 is staggered with the adjacent first pipeline 301, the oil return end 200 and the second working end 400 are not completely staggered with the adjacent first pipeline 301, and the hydraulic oil between the second working end 400 and the hydraulic motor continues to flow from the adjacent first pipeline 301 to the oil return end 200 under the action of inertia, and the first working end 300 generates negative pressure due to the continued downward flow of the hydraulic oil. When the negative pressure at the first working end 300 gradually increases to a certain extent (after the pressure cannot be reduced), the hydraulic oil between the first working end 300, the hydraulic motor and the second working end 400 stops moving toward the oil return end 200 under the action of the negative pressure, and under the action of the negative pressure The hydraulic oil flows back in the downward direction until the negative pressure at the first working end 300 disappears and the hydraulic oil stops moving. At this time, the return oil end 200 is offset from the adjacent first pipe 301. At this time, the control terminal controls the electric shaft 2 to stop rotating. Because before the second working end 400 is offset from the adjacent first pipe 301, the hydraulic oil at the second working end 400 can always flow into the return oil end 200 through the adjacent first pipe 301. Therefore, the second working end 400 will not be suddenly offset from the adjacent first pipe 301, causing the hydraulic oil to suddenly stop flowing and produce water hammer phenomenon, thereby increasing the stability of the device and reducing the probability of the hydraulic pipeline being thrown off and injuring people under strong vibration.

[0045] When the staff needs to control the hydraulic motor to reverse, the staff controls the electric shaft 2 to drive the valve core 3 to rotate through the control terminal 103, and the valve core 3 drives the first pipeline 301 and the second pipeline 302 to rotate together, so that the oil inlet end 100 and the oil return end 200 are respectively connected with the adjacent second pipeline 302, and the hydraulic oil flows along the oil inlet end 100, the second working end 400, the hydraulic motor, the first working end 300 and the oil return end 200 in order. At this time, whether it is the water hammer phenomenon caused by the high hydraulic flow rate and high pressure when just connected, or the water hammer phenomenon caused by the staff controlling the hydraulic motor to stop, the liquid storage barrel 4 and the pressure-bearing part 51 absorb the energy of the hydraulic oil according to the same principle as above to reduce the impact force of the hydraulic oil.

[0046] As a preference, refer to Figure 5 and Figure 7 , and also includes: a second communicating pipe 6, which is fixedly connected and connected to the liquid supply pipe 101 that is not connected to the first communicating pipe 41, the second communicating pipe 6 is fixedly connected and connected to a plurality of communicating short pipes 61 distributed at intervals, the communicating short pipes 61 are connected to the liquid storage barrel 4, and the pressure-bearing member 51 separates the connection between adjacent communicating short pipes 61 and the liquid storage barrel 4.

[0047] As a preference, refer to Figure 7 The flow area of ​​the connecting short pipe 61 is less than one tenth of the flow area of ​​the liquid supply pipeline 101 , and the flow area of ​​the second connecting pipeline 6 is less than one third of the flow area of ​​the liquid supply pipeline 101 .

[0048] As a preference, refer to Figure 3 , Figure 4 , Figure 8 and Fig. 9 , also includes: a pushing component, which is arranged in the valve body 1 and is used to push the piston rod 5 to move. The pushing component includes: a swing rod 7, which is rotatably connected in the valve body 1, the piston rod 5 is slidably connected to the liquid storage barrel 4, and the piston rod 5 is slidably connected to the swing rod 7; a sliding member 71 is slidably connected in the valve body 1, and a second elastic member is installed between the two, and the sliding member 71 is slidably connected to the swing rod 7; an extruding member 72 is fixedly connected to the outer side of the electric rotating shaft 2, the extruding member 72 is fixedly connected to the valve core 3, and a protrusion is arranged on the outer side of the extruding member 72, and the protrusion on the extruding member 72 is used to squeeze the sliding member 71 to move.

[0049] In the above scheme, the second connecting pipe 6 is fixedly connected to and connected to the oil return end 200, and all the connecting short pipes 61 are distributed on the same horizontal plane. By making the flow area of ​​the connecting short pipe 61 smaller than one tenth of the flow area of ​​the liquid supply pipe 101, and making the flow area of ​​the second connecting pipe 6 smaller than one third of the flow area of ​​the liquid supply pipe 101, the amount of hydraulic oil flowing through the second connecting pipe 6 to the oil return end 200 is controlled within a small range, thereby reducing the probability of a substantial increase in the hydraulic oil pressure at the oil return end 200 and affecting other devices in the hydraulic system. The sliding connection between the sliding member 71 and the swing rod 7 is located between the rotation connection between the swing rod 7 and the valve body 1 and the sliding connection between the swing rod 7 and the piston rod 5. Figure 7 The first elastic member on the middle pressure member 51 is in a force storage state, in which the oil inlet end 100 is connected to the adjacent first pipeline 301 or the adjacent second pipeline 302. Fig. 9 The first elastic member on the middle pressure member 51 is in a relaxed state, in which the oil inlet end 100 is not connected to the adjacent first pipeline 301 and the adjacent second pipeline 302 . The second elastic member on the sliding member 71 is a spring, and the elastic force of the second elastic member on the sliding member 71 is greater than the elastic force of the first elastic member on the pressure member 51 .

[0050] The working process of this embodiment is as follows: when the oil inlet end 100 is connected with the adjacent first pipe 301 or the adjacent second pipe 302, the protrusion on the extrusion member 72 no longer squeezes the sliding member 71, and the sliding member 71 is on the left side under the elastic force of the second elastic member thereon. The sliding member 71 drives the piston rod 5 to move to the left side through the swing rod 7, and the first elastic member on the pressure-bearing member 51 is compressed and stored. At this time, the elastic force stored in the first elastic member on the pressure-bearing member 51 is relatively large. If the staff needs to increase the power of the hydraulic pump, the increase in the power of the hydraulic pump gradually increases the hydraulic oil pressure in the hydraulic system. At this time, the high-pressure hydraulic oil is not enough to push the pressure-bearing member 51 to move to the right, so that the oil inlet end 100 will not be connected with the return oil end 200 through the liquid storage barrel 4, the connecting short pipe 61 and the second connecting pipe 6, and the hydraulic oil delivered to the hydraulic motor by the first working end 300 will not be reduced, so as to reduce the probability of problems such as insufficient output power of the hydraulic motor, and further ensure the stability of the operation of the device.

[0051] When the staff controls the electric shaft 2 to drive the valve core 3 to rotate through the control terminal 103, the connection between the oil inlet end 100 and the adjacent first pipeline 301 or the adjacent second pipeline 302 is disconnected, and water hammer occurs. At this time, because the electric shaft 2 drives the extrusion member 72 to rotate while driving the valve core 3 to rotate, the protrusion on the extrusion member 72 squeezes the sliding member 71 to move to the right, and the sliding member 71 moves to the right under the action of the second elastic member thereon, and the sliding member 71 drives the swing rod 7 to swing, and the swing rod 7 drives the piston rod 5 to move to the right, and the first elastic member on the pressure-bearing member 51 is gradually released. At this time, the high-pressure hydraulic oil flows into the liquid storage barrel 4. Under the dual effects of the reduced elastic force of the first elastic member on the pressure-bearing member 51 and the increased pressure of the hydraulic oil, the high-pressure hydraulic oil pushes the pressure-bearing member 51 to move to the right, compresses the first elastic member to store force, and the energy in the high-pressure hydraulic oil is gradually consumed.

[0052] When the pressure-bearing member 51 moves to the leftmost connecting short tube 61, the pressure-bearing member 51 gradually releases the blockage of the leftmost connecting short tube 61 during the movement. At this time, part of the high-pressure hydraulic oil flows into the leftmost connecting short tube 61 and flows back to the return oil end 200 through the second connecting pipe 6. After the high-pressure hydraulic oil passes through the narrow connecting short tube 61, the energy inside the high-pressure hydraulic oil is further consumed, thereby increasing the upper limit of the energy of the high-pressure hydraulic oil absorbed in the liquid storage barrel 4. As the high-pressure hydraulic oil pushes the pressure-bearing member 51 to move gradually to the right, the energy inside the hydraulic oil gradually decreases to a normal level under the dual consumption of the first elastic member on the pressure-bearing member 51 and the connecting short tube 61. When the energy inside the high-pressure hydraulic oil decreases, the pressure-bearing member 51 gradually resets to the left under the action of the first elastic member, and successively blocks adjacent connecting short tubes 61 until the pressure-bearing member 51 returns to its initial state.

[0053] As a preference, refer to Figure 4 and Figure 9-11 , and also includes: an adjusting mechanism, which is arranged in the valve body 1 and is used to reduce the impact of the liquid on the load pipeline 102, and the adjusting mechanism includes: a balancing cylinder 8, which is fixed in the valve body 1, and two cavities are arranged in the balancing cylinder 8; a third connecting pipe 81, which has two, both of which are fixed to the outside of the balancing cylinder 8, the third connecting pipe 81 is connected with the adjacent cavity in the balancing cylinder 8, and the third connecting pipe 81 is connected with the adjacent load pipeline 102; a moving member 82, the moving member 82 is slidably connected in the balancing cylinder 8; a connecting component, which has two, both of which are arranged in the valve body 1, and are used to make the liquid in the two cavities in the balancing cylinder 8 flow outward.

[0054] In the above scheme, the two cavities in the balance cylinder 8 are named as the left cavity and the right cavity respectively. The left cavity of the balance cylinder 8 is connected to the first working end 300 through the adjacent third connecting pipe 81, and the right cavity of the balance cylinder 8 is connected to the second working end 400 through the adjacent third connecting pipe 81. The shape of the moving member 82 is as follows: Fig.10As shown, when the hydraulic oil pressure in the left cavity on the balancing cylinder 8 is greater than the hydraulic oil pressure in the right cavity on the balancing cylinder 8, the moving member 82 gradually moves to the right under the push of the hydraulic oil in the left cavity on the balancing cylinder 8, thereby squeezing the hydraulic oil in the right cavity on the balancing cylinder 8 into the second working end 400, and then storing the hydraulic oil in the left cavity on the balancing cylinder 8.

[0055] The working process of this embodiment is as follows: when the hydraulic oil flows along the oil inlet end 100, the first working end 300, the hydraulic motor, the second working end 400 to the oil return end 200, at this time, the pressure of the hydraulic oil at the first working end 300 is higher than the pressure of the hydraulic oil at the second working end 400, the hydraulic oil in the first working end 300 flows into the left cavity on the balancing cylinder 8, and the hydraulic oil in the second working end 400 flows into the right cavity on the balancing cylinder 8, so the hydraulic oil pressure in the left cavity on the balancing cylinder 8 is greater than the hydraulic oil pressure in the right cavity on the balancing cylinder 8, and the moving part 82 moves to the rightmost end of the travel of the moving part 82 under the push of the hydraulic oil in the left cavity, and the hydraulic oil is stored in the left cavity on the balancing cylinder 8. When the staff controls the electric shaft 2 to drive the valve core 3 to rotate through the control terminal 103, so that the oil inlet end 100 is disconnected from the first working end 300 port, the first working end 300 The hydraulic oil between the hydraulic motor and the first working end 300 will still flow a certain distance under the action of inertia, and negative pressure will be generated at the first working end 300. The first working end 300 absorbs the hydraulic oil in the left cavity of the balancing cylinder 8 through the negative pressure. The moving part 82 moves to the left to reduce the negative pressure at the first working end 300. At the same time, the moving part 82 cooperates with the balancing cylinder 8 to make the right cavity of the balancing cylinder 8 absorb the hydraulic oil. During the flow of the hydraulic oil, the energy therein is gradually consumed. If the energy in the hydraulic oil is relatively large, when the hydraulic oil in the left cavity of the balancing cylinder 8 is completely discharged, there is still negative pressure at the first working end 300. The connecting component draws the hydraulic oil in the right cavity of the balancing cylinder 8 to the first working end 300, so that the negative pressure at the first working end 300 is gradually reduced, thereby reducing the amount of hydraulic oil backflow and reducing the impact force on the first working end 300 generated when the hydraulic oil backflows.

[0056] As a preference, refer to Figure 10-12 The connecting component includes: a fourth connecting pipe 9, which is fixed in the valve body 1, one end of the fourth connecting pipe 9 is connected to a cavity in the balancing cylinder 8, and the other end is connected to a load pipe 102 adjacent to another cavity in the balancing cylinder 8, and the moving member 82 blocks the connection between the adjacent fourth connecting pipe 9 and the balancing cylinder 8; a sliding plate 91, which is slidably connected to the adjacent cavity on the balancing cylinder 8, and a third elastic member is installed between the sliding plate 91 and the balancing cylinder 8, and the sliding plate 91 is used to squeeze the moving member 82 to move; a limiting component is arranged on the outside of the balancing cylinder 8, and is used to limit the moving member 82.

[0057] As a preference, refer to Fig. 9 and Fig.10 An electric push rod 10 is fixedly connected to the outer side of the balancing cylinder 8, and the telescopic end of the electric push rod 10 penetrates the balancing cylinder 8. The telescopic end of the electric push rod 10 and the moving part 82 are both equipped with magnets that attract each other.

[0058] As a preference, refer to Figure 9-12 The limiting assembly includes: a fixed shell 11, fixedly connected to the outer side of the balancing cylinder 8, a limiting member 111 is slidably connected inside the fixed shell 11, and a fourth elastic member is installed between the two, and the limiting member 111 penetrates the balancing cylinder 8; a connecting hose 112, fixedly connected and connected to a side of the fixed shell 11 close to the balancing cylinder 8, and the connecting hose 112 is connected to the adjacent load pipeline 102; a fixed block 113, fixedly connected to the moving member 82, and the limiting member 111 is used to limit the fixed block 113.

[0059] In the above scheme, when the oil inlet end 100 is disconnected from the adjacent first pipeline 301 or the adjacent second pipeline 302, the negative pressure generated at the load pipeline 102 is reduced to prevent the negative pressure at the first working end 300 from increasing to a certain extent, causing the hydraulic oil between the first working end 300 and the hydraulic motor to quickly flow back to the load pipeline 102, causing the return hydraulic oil to cause a secondary hydraulic shock to the load pipeline 102. The cross-sectional shape of the fourth connecting pipeline 9 is a flat shape, thereby maintaining the resistance of the liquid passing through the fourth connecting pipeline 9 at a high level. horizontal; the fourth communicating pipe 9 communicating with the left cavity on the balancing cylinder 8 is connected to the second working end 400, the fourth communicating pipe 9 communicating with the right cavity on the balancing cylinder 8 is connected to the first working end 300, the communicating hose 112 communicating with the left cavity on the balancing cylinder 8 is connected to the first working end 300, the communicating hose 112 communicating with the right cavity on the balancing cylinder 8 is connected to the second working end 400, the electric push rod 10 is electrically connected to the control terminal 103, the third elastic member on the sliding plate 91 is a spring, and the fourth elastic member on the limit member 111 is a spring.

[0060] The working process of this embodiment is as follows: taking the connection between the oil inlet end 100 and the first working end 300 as an example: the staff first controls the movement of the telescopic end of the electric push rod 10 through the control terminal 103, and the telescopic end of the electric push rod 10 first attracts the moving part 82 through the magnet block thereon, and then the telescopic end of the electric push rod 10 drives the moving part 82 to move to the rightmost end of the travel of the moving part 82, and the hydraulic oil at the first working end 300 is absorbed in the left cavity on the balance cylinder 8, and then the telescopic end of the electric push rod 10 drives the moving part 82 to move to the left, and squeezes all the hydraulic oil in the left cavity on the balance cylinder 8 into the first working end 300, so that the static hydraulic oil flows between the first working end 300 and the hydraulic motor, and at this time the staff simultaneously controls the terminal 103 to control the electric rotating shaft 2 to drive the valve core 3 to rotate, so that the oil inlet end 100 is connected to the first working end 300 (when the oil inlet end 100 needs to be connected to the second working end When the first working end 300 is in operation, the control terminal 103 controls the electric shaft 2 to drive the valve core 3 to rotate, and when the oil inlet end 100 is connected to the first working end 300, the hydraulic oil in the first working end 300 is already in a flowing state. At this time, the hydraulic oil rushing into the first working end 300 from the oil inlet end 100 has a smaller impact on the hydraulic oil in the first working end 300, thereby reducing the probability of water hammer caused by the hydraulic oil in the oil inlet end 100 rushing into the first working end 300 quickly. When the oil inlet end 100 is connected to the first working end 300, the control terminal 103 controls the telescopic end of the electric push rod 10 to reset, and the moving part 82 moves to the right under the pressure of the hydraulic oil. The magnetic block on the telescopic end of the electric push rod 10 and the magnetic block on the moving part 82 are separated under the action of the hydraulic oil pressure, and the moving part 82 gradually moves to the far right.

[0061] When the oil inlet end 100 is connected to the first working end 300, the hydraulic oil pressure at the first working end 300 is relatively high, and the hydraulic oil in the first working end 300 enters the adjacent fixed shell 11 through the adjacent connecting hose 112, squeezing the limiter 111 in the left cavity of the balancing cylinder 8 to move downward, and the fourth elastic member on the limiter 111 is compressed and stored. At this time, the limiter 111 is located in the same plane as the fixed block 113 in the left cavity of the balancing cylinder 8, preventing the moving member 82 from moving to the far right, causing the left cavity of the balancing cylinder 8 to be connected to the second working end 400 through the adjacent fourth connecting pipe 9, and at this time, The pressure in the fixed shell 11 connected to the second working end 400 is relatively low, and the hydraulic oil in the second working end 400 cannot squeeze the limiter 111 to move downward. Therefore, the limiter 111 and the adjacent fixed block 113 in the right cavity of the balance cylinder 8 are not in the same plane, and the limiter 111 does not limit the adjacent fixed block 113. When the oil inlet end 100 is disconnected from the first working end 300, the moving member 82 moves to the left under the negative pressure at the first working end 300. At this time, the moving member 82 drives the fixed block 113 to move to the left together. When the moving member 82 contacts the sliding plate 91 on the right When the balancing cylinder 8 is in the right position, the limiting member 111 in the upper right cavity of the balancing cylinder 8 does not limit the adjacent fixed block 113, so the moving member 82 continues to move to the left, compressing the third elastic member on the adjacent sliding plate 91, until the moving member 82 moves to the leftmost side of its stroke, and the upper right cavity of the balancing cylinder 8 is connected with the first working end 300 through the adjacent fourth connecting pipe 9, and the hydraulic oil in the second working end 400 flows back to the first working end 300 along the path of the upper right cavity of the balancing cylinder 8 and the fourth connecting pipe 9, further reducing the negative pressure generated at the first working end 300, thereby avoiding the increase of the negative pressure at the first working end 300. When it is large enough, the hydraulic oil between the first working end 300 and the hydraulic motor will quickly flow back to the first working end 300, causing the place to be subjected to hydraulic shock. When the negative pressure at the first working end 300 gradually returns to the normal value, the movable part 82 extends to the right under the action of the third elastic part on the adjacent sliding plate 91, and the movable part 82 re-blocks the adjacent fourth connecting pipe 9. When the oil inlet end 100 is connected with the second working end 400, the limiting part 111 in the right cavity limits the adjacent fixed block 113. The operating principle of the movable part 82 is similar to the above principle, so it will not be repeated.

[0062] Example 2: Based on Example 1, Figure 1-Figure 12 A method for pulling and moving a vehicle in a mining face along a chute is applied to the above-mentioned device for pulling and moving a vehicle in a chute of a mining face. The specific method is as follows:

[0063] S1: The control terminal 103 controls the electric shaft 2 to drive the valve core 3 to rotate. The electric shaft 2 drives the piston rod 5 to move through the extrusion member 72, the sliding member 71, and the swing rod 7, so that the first elastic member on the pressure-bearing member 51 is compressed and stored, and the flow path of the hydraulic oil is controlled, so that the hydraulic motor drives the winch to work. The winch moves along the trough by dragging the car through the wire rope, and the moving member 82 moves to the side of the load pipeline 102 with low pressure;

[0064] S2: When the control terminal 103 controls the valve core 3 to rotate and the hydraulic motor is turned off, the electric shaft 2 drives the extrusion member 72 to rotate, and the extrusion member 72 drives the piston rod 5 to move through the sliding member 71 and the swing rod 7, so that the first elastic member on the pressure member 51 is released;

[0065] S3: When water hammer occurs at the liquid supply pipe 101 of the pressure-bearing member 51, the hydraulic oil enters the liquid storage barrel 4 under the action of the water hammer, pushing the pressure-bearing member 51 to move, and the first elastic member on the pressure-bearing member 51 is compressed and stores force. During the movement, the pressure-bearing member 51 releases the blockage of the adjacent connecting short pipe 61, and the hydraulic oil flows back from the liquid storage barrel 4 to the hydraulic system through the second connecting pipe 6;

[0066] S4: When the load pipe 102 generates negative pressure, the moving member 82 moves toward the load pipe 102 generating negative pressure under the action of the negative pressure, and squeezes the hydraulic oil in the balancing cylinder 8 into the load pipe 102 generating negative pressure. When the moving member 82 moves to the end, the cavity in the balancing cylinder 8 is connected with the load pipe 102 generating negative pressure through the adjacent fourth connecting pipe 9;

[0067] S5: When the water hammer and negative pressure disappear, the sliding plate 91 is pushed by the third elastic member thereon to squeeze the moving member 82 to reset, and the pressure-receiving member 51 is reset under the action of the adjacent third elastic member.

[0068] The above description is only an example of the present invention and is not intended to limit the present invention. Any equivalent substitutions made within the principles of the present invention should be included in the protection scope of the present invention. The contents not elaborated in detail in the present invention belong to the existing technologies known to those skilled in the art.

Claims

1. A device for pulling and moving vehicles in a chute of a mining face, characterized in that: Included are: A valve body (1), wherein symmetrically distributed liquid supply pipes (101) and symmetrically distributed load pipes (102) are fixedly connected inside the valve body (1); An electric rotating shaft (2) is mounted on the valve body (1); the electric rotating shaft (2) is fixedly connected to a valve core (3); the valve core (3) is rotatably connected to the valve body (1); a symmetrically distributed first pipeline (301) and a symmetrically distributed second pipeline (302) are fixedly connected inside the valve core (3); the first pipeline (301) and the second pipeline (302) are both used to connect the adjacent liquid supply pipeline (101) and the adjacent load pipeline (102); A control terminal (103) is arranged on the outside of the valve body (1) and is electrically connected to the electric rotating shaft (2); A liquid storage barrel (4) is fixedly connected to the valve body (1); the liquid storage barrel (4) is fixedly connected to and communicated with a first communicating pipe (41); the first communicating pipe (41) is communicated with the adjacent liquid supply pipe (101); a piston rod (5) is arranged in the liquid storage barrel (4); the piston rod (5) is slidably connected to a pressure-bearing member (51), and a first elastic member is installed between the two; the pressure-bearing member (51) is slidably connected to the liquid storage barrel (4).

2. The device for pulling and moving vehicles in a mining face along the chute according to claim 1 is characterized in that: The flow area at both ends of one of the first pipes (301) is greater than the flow area at both ends of another of the first pipes (301), and the flow area at both ends of one of the second pipes (302) is greater than the flow area at both ends of another of the second pipes (302).

3. The device for pulling and moving vehicles in a mining face along the chute according to claim 1 is characterized in that: Also included are: The second communicating pipe (6) is fixedly connected to and communicated with the liquid supply pipe (101) which is not connected to the first communicating pipe (41). The second communicating pipe (6) is fixedly connected to and communicated with a plurality of communicating short pipes (61) which are distributed at intervals. The communicating short pipes (61) are connected to the liquid storage barrel (4). The pressure-bearing member (51) separates the connection between the adjacent communicating short pipes (61) and the liquid storage barrel (4).

4. The device for pulling and moving vehicles in a mining face along the chute according to claim 3 is characterized in that: The flow area of ​​the connecting short pipe (61) is less than one tenth of the flow area of ​​the liquid supply pipe (101), and the flow area of ​​the second connecting pipe (6) is less than one third of the flow area of ​​the liquid supply pipe (101).

5. The device for pulling and moving vehicles in a mining face along the chute according to claim 3 is characterized in that: Also included are: A pushing assembly is arranged in the valve body (1) and is used to push the piston rod (5) to move. The pushing assembly comprises: The swing rod (7) is rotatably connected to the valve body (1), the piston rod (5) is slidably connected to the liquid storage barrel (4), and the piston rod (5) is slidably connected to the swing rod (7); The sliding member (71) is slidably connected to the valve body (1), and a second elastic member is installed between the two. The sliding member (71) is slidably connected to the swing rod (7); An extrusion member (72) is fixedly connected to the outer side of the electric rotating shaft (2). The extrusion member (72) is fixedly connected to the valve core (3). A convex block is arranged on the outer side of the extrusion member (72). The convex block on the extrusion member (72) is used to squeeze the sliding member (71) to move.

6. The device for pulling and moving vehicles in a mining face along the chute according to claim 5 is characterized in that: Also included are: The regulating mechanism is arranged in the valve body (1) and is used to reduce the impact of the liquid on the load pipeline (102). The regulating mechanism comprises: A balancing cylinder (8) is fixedly connected to the valve body (1), and two cavities are arranged in the balancing cylinder (8); there are two third communicating pipes (81), both of which are fixedly connected to the outside of the balancing cylinder (8), and the third communicating pipes (81) are connected to adjacent cavities in the balancing cylinder (8), and the third communicating pipes (81) are connected to the adjacent load pipe (102); A moving member (82), wherein the moving member (82) is slidably connected inside the balancing cylinder (8); There are two connecting components, both of which are arranged in the valve body (1) and are used to make the liquid in the two cavities in the balancing cylinder (8) flow outward.

7. The device for pulling and moving vehicles in a mining face along the chute according to claim 6 is characterized in that: The connectivity components include: a fourth communication pipe (9) fixedly connected to the valve body (1), one end of the fourth communication pipe (9) being in communication with a cavity in the balancing cylinder (8), and the other end of the fourth communication pipe (9) being in communication with the load pipe (102) adjacent to another cavity in the balancing cylinder (8), and the moving member (82) blocking the connection between the adjacent fourth communication pipe (9) and the balancing cylinder (8); A sliding plate (91) is slidably connected to an adjacent cavity on the balancing cylinder (8), and a third elastic member is installed between the sliding plate (91) and the balancing cylinder (8), and the sliding plate (91) is used to squeeze the moving member (82) to move; A limiting assembly is arranged on the outside of the balancing cylinder (8) and is used to limit the position of the moving member (82).

8. The device for pulling and moving vehicles in a mining face along the chute according to claim 7 is characterized in that: An electric push rod (10) is fixedly connected to the outer side of the balancing cylinder (8), the telescopic end of the electric push rod (10) penetrates the balancing cylinder (8), and the telescopic end of the electric push rod (10) and the moving part (82) are both equipped with magnets that attract each other.

9. The device for pulling and moving vehicles in a mining face along the chute according to claim 8 is characterized in that: The limit assembly includes: A fixed shell (11) is fixedly connected to the outer side of the balancing cylinder (8); a limiting member (111) is slidably connected inside the fixed shell (11), and a fourth elastic member is installed between the two; the limiting member (111) penetrates the balancing cylinder (8); A connecting hose (112) is fixedly connected to and connected to a side of the fixed shell (11) close to the balancing cylinder (8), and the connecting hose (112) is connected to the adjacent load pipe (102); The fixed block (113) is fixedly connected to the movable member (82), and the limiting member (111) is used to limit the fixed block (113).

10. A method for pulling a vehicle in a mining face along a chute, applied to a device for pulling a vehicle in a mining face along a chute as claimed in claim 9, characterized in that: The specific method is as follows: S1: The electric rotating shaft (2) is controlled by the control terminal (103) to drive the valve core (3) to rotate. The electric rotating shaft (2) drives the piston rod (5) to move through the extrusion member (72), the sliding member (71), and the swing rod (7), so that the first elastic member on the pressure-bearing member (51) is compressed and stored, and the flow path of the hydraulic oil is controlled, so that the hydraulic motor drives the winch to work. The winch moves along the chute by dragging the car with a steel wire rope, and the moving member (82) moves to the side of the load pipeline (102) with low pressure; S2: When the control terminal (103) controls the valve core (3) to rotate and the hydraulic motor is turned off, the electric shaft (2) drives the extrusion member (72) to rotate, and the extrusion member (72) drives the piston rod (5) to move through the sliding member (71) and the swing rod (7), so that the first elastic member on the pressure-bearing member (51) is released; S3: When water hammer occurs at the liquid supply pipe (101) of the pressure-bearing member (51), the hydraulic oil enters the liquid storage barrel (4) under the action of the water hammer, pushing the pressure-bearing member (51) to move, and the first elastic member on the pressure-bearing member (51) is compressed to store force. During the movement, the pressure-bearing member (51) releases the blockage of the adjacent connecting short pipe (61), and the hydraulic oil flows back from the liquid storage barrel (4) to the hydraulic system through the second connecting pipe (6); S4: When the load pipe (102) generates negative pressure, the moving member (82) moves toward the load pipe (102) generating the negative pressure under the action of the negative pressure, and squeezes the hydraulic oil in the balancing cylinder (8) into the load pipe (102) generating the negative pressure. When the moving member (82) moves to the end, the cavity in the balancing cylinder (8) is connected to the load pipe (102) generating the negative pressure through the adjacent fourth connecting pipe (9); S5: When the water hammer and negative pressure disappear, the sliding plate (91) is pushed by the third elastic member on it to squeeze the moving member (82) to reset, and the pressure-bearing member (51) is reset under the action of the adjacent third elastic member.

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