Hydraulic control collapse mechanism

Abstract

The utility model discloses a hydraulically-controlled collapse mechanism, and belongs to the field of performance show equipment. A hydraulically-controlled collapse mechanism comprises a hydraulic system and a collapse assembly. The output end of the hydraulic system is connected with the collapse assembly so as to control starting and resetting of the collapse assembly. The hydraulic system further comprises a hydraulic cylinder which is an execution element of the hydraulic system. The collapse assembly comprises a movable pulley, a first fixed pulley, a second fixed pulley, a steel wire rope and a collapse body. The first fixed pulleys are fixedly arranged above and below the hydraulic cylinder respectively, and the movable pulley is rotationally arranged at the top of the hydraulic cylinder; the steel wire rope is connected with the collapse body through the first fixed pulley; the hydraulic control collapse mechanism disclosed by the utility model can simulate the situation that similar objects such as a wall body and a frame body rapidly and suddenly collapse in real life, and meanwhile, the hydraulic control collapse mechanism also has the performance of realizing slow ascending, resetting and descending.

Description

Technical Field

[0001] The utility model belongs to the field of performing arts show equipment, and more specifically, relates to a hydraulically controlled collapse mechanism. Background Art

[0002] The hydraulically controlled collapse mechanism for stage performances is a device designed for stage effects. It can precisely control the movement of the collapse body through the hydraulic system to simulate the collapse of walls, building structures, or other large objects. This mechanism is widely used in stage plays, film special effects, and other occasions that require realistic visual performance. The collapse mechanism is driven and controlled by the hydraulic system.

[0003] If the hydraulic system wants to achieve high-precision control of collapse and reset actions, and also want to be suitable for complex stage performance requirements, it requires ultra-large flow output and control. If a hydraulic pump that matches the large flow requirement is used, the supporting motor, oil tank and control valve will need to be increased by 5 to 10 times, and the electrical control system must also have corresponding configuration improvements, which makes the system cost very high. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a hydraulically controlled collapse mechanism, which can reduce equipment costs without affecting equipment performance.

[0005] The utility model discloses a hydraulically controlled collapse mechanism, comprising a hydraulic system and a collapse component; the output end of the hydraulic system is connected to the collapse component to control the start and reset of the collapse component;

[0006] The hydraulic system also includes a hydraulic cylinder, which is the actuator of the hydraulic system;

[0007] The collapse assembly includes a movable pulley, a first fixed pulley, a second fixed pulley, a steel wire rope, and a collapse body; the first fixed pulley is fixedly arranged above and below the hydraulic cylinder, and the movable pulley is rotatably arranged on the top of the hydraulic cylinder; the hydraulic cylinder is connected to the steel wire rope through the movable pulley, and the steel wire rope is connected to the collapse body through the first fixed pulley;

[0008] The second fixed pulley is fixedly arranged on the side of the collapse body facing the hydraulic cylinder; the wire rope passes through the first fixed pulley and the second fixed pulley in sequence, and the wire rope links the collapse body and the hydraulic system through the first fixed pulley and the second fixed pulley.

[0009] As a further improvement of the present invention, the hydraulic system includes an oil tank, a first oil outlet oil circuit and an oil suction oil circuit, one end of the first oil outlet oil circuit is connected to the oil tank, and one end of the oil suction oil circuit is connected to the oil tank; a first cartridge valve, a first reversing valve and a throttle valve are sequentially arranged on the first oil outlet oil circuit; the first oil outlet oil circuit is the oil circuit for discharging oil from the oil tank when the system collapses; the oil suction oil circuit is the oil circuit for sucking oil when the system collapses; the first cartridge valve is an on-off control valve on the first oil outlet oil circuit when the system suddenly collapses, the first reversing valve is the pilot control valve of the first cartridge valve, and the throttle valve is used to control the speed when the system collapses.

[0010] As a further improvement of the present invention, the hydraulic system further comprises an electromagnetic reversing valve, a hydraulically controlled one-way valve, a one-way throttle valve and a balancing valve; the electromagnetic reversing valve is a directional control valve for the electric rise, reset and descent of the collapse system; the hydraulically controlled one-way valve is a control element for maintaining the position of the equipment when it stops; the one-way throttle valve is a speed regulating valve for the electric rise, reset and descent; and the balancing valve is used to maintain the stability of the system operation when the system is electrically descended;

[0011] The hydraulic cylinder includes a rod chamber and a rodless chamber; the end of the first oil outlet circuit is provided with a first branch oil circuit and a second branch oil circuit, and the end of the first branch oil circuit is installed and connected to the rodless chamber of the hydraulic cylinder; the second branch oil circuit is installed and connected to the balancing valve, the one-way throttle valve and the hydraulically controlled one-way valve in sequence, and the end of the second branch oil circuit is installed and connected to the first output port of the electromagnetic reversing valve; the second cartridge valve and the second reversing valve are installed in sequence between the second branch oil circuit between the electromagnetic reversing valve and the hydraulically controlled one-way valve and the second branch oil circuit at the front end of the balancing valve; the second cartridge valve is a control valve on the auxiliary control circuit when the system collapses, and the second reversing valve is a pilot control valve of the second cartridge valve.

[0012] As a further improvement of the present invention, a third cartridge valve and a third reversing valve are sequentially provided at one end of the oil suction circuit away from the oil tank; the third cartridge valve is an on-off control valve on the oil suction circuit, and the third reversing valve is a pilot control valve of the third cartridge valve; the oil suction circuit is respectively provided with a third branch oil circuit and a fourth branch oil circuit through the third cartridge valve; the end of the third branch oil circuit is installed and connected to the rod chamber of the hydraulic cylinder; the fourth branch oil circuit is installed and connected to the balancing valve, the one-way throttle valve and the hydraulically controlled one-way valve in sequence, and the end of the fourth branch oil circuit is installed and connected to the second output port provided with the electromagnetic reversing valve.

[0013] As a further improvement of the present invention, a first pressure measuring joint is provided on the third branch oil circuit between the third cartridge valve and the hydraulic cylinder, and the first pressure measuring joint is used to observe the pressure of the rod chamber of the hydraulic cylinder during debugging; a second pressure measuring joint is provided on the first branch oil circuit, and the second pressure measuring joint is used to observe the pressure of the rodless chamber of the hydraulic cylinder during debugging.

[0014] As a further improvement of the present invention, the hydraulic system also includes a second oil outlet circuit; an oil suction filter is provided in the oil tank, and one end of the second oil outlet circuit passes through the oil tank and is installed and connected to the oil suction filter; a hydraulic pump, a one-way valve, a pressure gauge and a pressure sensor are sequentially provided on the second oil outlet circuit; the output end of the hydraulic pump is installed and connected to the input end of the one-way valve, and the one-way valve prevents the backflow of high-pressure oil; the pressure gauge and the pressure sensor are used to observe the real-time pressure of the system.

[0015] As a further improvement of the present invention, the second oil outlet circuit is installed and connected to the balance valve, the one-way throttle valve and the hydraulic control one-way valve in sequence, and the end of the second oil outlet circuit is installed and connected to the oil inlet set by the electromagnetic reversing valve.

[0016] As a further improvement of the present invention, the hydraulic system also includes a return oil circuit; one end of the return oil circuit is connected to the oil tank; an oil filter is provided on the return oil circuit, which is a hydraulic accessory that ensures the cleanliness of the hydraulic medium of the system; the return oil circuit is installed and connected to the balancing valve, the one-way throttle valve and the hydraulic control one-way valve in sequence, and the end of the return oil circuit is installed and connected to the return oil port set by the electromagnetic reversing valve.

[0017] As a further improvement of the present invention, an electromagnetic overflow valve is provided between the second oil outlet circuit between the one-way valve and the pressure sensor and the oil return circuit between the oil filter and the balancing valve, and the electromagnetic overflow valve is used to adjust the rated pressure of the system.

[0018] As a further improvement of the present invention, the hydraulic system further includes a pump sleeve coupling and a motor; the hydraulic pump is installed and connected to the motor through the pump sleeve coupling, and the motor drives the hydraulic pump to suck oil from the oil tank through the oil suction filter.

[0019] Compared with the existing technology, the beneficial effects of the present invention are: the hydraulically controlled collapse performance system of the present invention can simulate the rapid and sudden collapse of walls, frames and other similar objects in real life, and it also has the performance of realizing slow rising, resetting and descending;

[0020] The utility model adopts the use of the dead weight of the equipment as the driving force for collapse, and uses the combination of different types of hydraulic control valves to orderly open and close the system's collapse process. The hydraulic system only increases the diameter of the control valve and the pipeline to achieve the function of sudden collapse. The hydraulic pump, motor, oil tank, etc. are not increased. They only need to meet the requirements of slow rising and resetting. This greatly reduces the cost of the equipment and greatly improves the cost performance of the equipment without affecting the performance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the hydraulic system structure of the present invention;

[0022] Figure 2This is one of the structural diagrams of the collapse performance system of the present invention;

[0023] Figure 3 This is the second structural diagram of the collapse performance system of the present invention;

[0024] Figure 4 This is the third structural diagram of the collapse performance system of the present invention.

[0025] Description of the numbers in the figure:

[0026] 1. Fuel tank; 2. Liquid level gauge; 3. Air filter; 4. Suction filter; 5. Motor; 6. Pump sleeve coupling; 7. Hydraulic pump; 8. Check valve; 9. Solenoid overflow valve; 10. Solenoid reversing valve; 11. Hydraulic control check valve; 12. One-way throttle valve; 13. Balancing valve; 14. Pressure gauge; 15. Pressure sensor; 16. Oil filter; 17. First cartridge valve; 18. First reversing valve; 19. Throttle valve; 20. Second cartridge valve; 21. Second reversing valve; 22. Third cartridge valve; 23. Third reversing valve; 24. First pressure measuring joint; 25. Second pressure measuring joint; 26. Hydraulic cylinder; 27. Movable pulley; 28. First fixed pulley; 29. ​​Wire rope; 30. Collapsed body; 31 , the first oil outlet circuit; 311, the first branch oil circuit; 312, the second branch oil circuit; 32, the oil suction circuit; 321, the third branch oil circuit; 322, the fourth branch oil circuit; 33, the second oil outlet circuit; 34, the oil return circuit; 35, the collapsed column assembly; 36, the column connecting frame; 37, the column table bracket; 38, the jacking and traction mechanism; 39, the rotating support assembly; 40, the locking mechanism; 41, the safety chain; 42, the pull wire encoder; 43, the electrical component; 44, the column splicing assembly; 45, the rotation protection assembly; 46, the ring sleeve; 48, the embedded assembly; 49, the foundation steel frame assembly; 50, the anti-collision buffer assembly; 51, the collapse pre-tightening assembly; 52, the wire rope tensioning assembly; 54, the traction pulley bracket. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

[0028] Specific embodiment 1: Please refer to Figure 1-2 A hydraulically controlled high-efficiency collapse performance system includes a hydraulic system and a collapse component; the output end of the hydraulic system is installed and connected to the collapse component to control the start and reset of the collapse component.

[0029] The hydraulic system includes an oil tank 1, a first oil outlet oil circuit 31 and an oil suction oil circuit 32. One end of the first oil outlet oil circuit 31 is connected to the oil tank 1, and one end of the oil suction oil circuit 32 is connected to the oil tank 1. The first oil outlet oil circuit 31 is sequentially provided with a first cartridge valve 17, a first reversing valve 18 and a throttle valve 19. The first oil outlet oil circuit 31 is the oil circuit for discharging oil from the oil tank when the system collapses; the oil suction oil circuit 32 is the oil circuit for sucking oil when the system collapses. The first cartridge valve 17 is an on-off control valve on the first oil outlet oil circuit 31 when the system suddenly collapses, the first reversing valve 18 is the pilot control valve of the first cartridge valve 17, and the throttle valve 19 is used to control the speed when the system collapses.

[0030] The hydraulic system further includes a hydraulic cylinder 26 , which includes a rod chamber and a rodless chamber; the hydraulic cylinder 26 is an actuator of the hydraulic system.

[0031] The hydraulic system also includes an electromagnetic reversing valve 10, a hydraulically controlled one-way valve 11, a one-way throttle valve 12 and a balancing valve 13; the electromagnetic reversing valve 10 includes a first output port, a second output port, an oil inlet and an oil return port, and is a directional control valve for the electric rise, reset and descent of the collapse system; the hydraulically controlled one-way valve 11 is a control element for the equipment to maintain its position when it stops; the one-way throttle valve 12 is a speed regulating valve for the electric rise, reset and descent; the balancing valve 13 is used to maintain the stability of the system operation when the system is electrically descended.

[0032] The end of the first oil outlet circuit 31 is divided into a first branch oil circuit 311 and a second branch oil circuit 312. The end of the first branch oil circuit 311 is installed and connected to the rodless chamber of the hydraulic cylinder 26; the second branch oil circuit 312 is installed and connected to the balancing valve 13, the one-way throttle valve 12 and the hydraulically controlled one-way valve 11 in sequence, and the end of the second branch oil circuit 312 is installed and connected to the first output port set by the electromagnetic reversing valve 10; the second cartridge valve 20 and the second reversing valve 21 are installed in sequence between the second branch oil circuit 312 between the electromagnetic reversing valve 10 and the hydraulically controlled one-way valve 11 and the second branch oil circuit 312 at the front end of the balancing valve 13; the second cartridge valve 20 is the control valve on the auxiliary control circuit when the system collapses, and the second reversing valve 21 is the pilot control valve of the second cartridge valve 20.

[0033] The end of the oil suction circuit 32 away from the oil tank 1 is sequentially provided with a third cartridge valve 22 and a third reversing valve 23; the third cartridge valve 22 is an on-off control valve on the oil suction circuit 32, and the third reversing valve 23 is a pilot control valve of the third cartridge valve 22; the oil suction circuit 32 is respectively provided with a third branch oil circuit 321 and a fourth branch oil circuit 322 through the third cartridge valve 22; the end of the third branch oil circuit 321 is installed and connected to the rod chamber of the hydraulic cylinder 26; the fourth branch oil circuit 322 is installed and connected to the balancing valve 13, the one-way throttle valve 12 and the hydraulically controlled one-way valve 11 in sequence, and the end of the fourth branch oil circuit 322 is installed and connected to the second output port set by the electromagnetic reversing valve 10.

[0034] A first pressure measuring joint 24 is provided on the third branch oil circuit 321 between the third cartridge valve 22 and the hydraulic cylinder 26. The first pressure measuring joint 24 is used to observe the pressure of the rod chamber of the hydraulic cylinder during debugging; a second pressure measuring joint 25 is provided on the first branch oil circuit 311. The second pressure measuring joint 25 is used to observe the pressure of the rodless chamber of the hydraulic cylinder during debugging.

[0035] A liquid level gauge 2 is fixedly installed on the fuel tank 1 for observing the oil amount and oil temperature in the fuel tank 1; an air filter 3 is fixedly installed on the top of the fuel tank 1 to connect the inside and outside of the fuel tank 1; the air filter 3 is provided with a refueling port, through which refueling is added to the fuel tank 1.

[0036] The hydraulic system also includes a second oil outlet circuit 33 and an oil return circuit 34; an oil suction filter 4 is provided in the oil tank 1, and one end of the second oil outlet circuit 33 passes through the oil tank 1 and is installed and connected to the oil suction filter 4; a hydraulic pump 7, a one-way valve 8, a pressure gauge 14 and a pressure sensor 15 are sequentially provided on the second oil outlet circuit 33; the output end of the hydraulic pump 7 is installed and connected to the input end of the one-way valve 8, and the one-way valve 8 prevents the backflow of high-pressure oil; the pressure gauge 14 and the pressure sensor 15 are used to observe the real-time pressure of the system.

[0037] The second oil outlet circuit 33 is sequentially installed and connected to the balancing valve 13, the one-way throttle valve 12 and the hydraulically controlled one-way valve 11, and the end of the second oil outlet circuit 33 is installed and connected to the oil inlet provided by the electromagnetic reversing valve 10; one end of the return oil circuit 34 is connected through the oil tank 1; the return oil circuit 34 is provided with an oil filter 16, which is a hydraulic accessory for ensuring the cleanliness of the system hydraulic medium; the return oil circuit 34 is sequentially installed and connected to the balancing valve 13, the one-way throttle valve 12 and the hydraulically controlled one-way valve 11, and the end of the return oil circuit 34 is installed and connected to the return oil port T provided by the electromagnetic reversing valve 10.

[0038] An electromagnetic overflow valve 9 is provided between the second oil outlet passage 33 between the one-way valve 8 and the pressure sensor 15 and the oil return passage 34 between the oil filter 16 and the balancing valve 13 . The electromagnetic overflow valve 9 is used to adjust the rated pressure of the system.

[0039] The hydraulic system also includes a pump sleeve coupling 6 and a motor 5; the hydraulic pump 7 is installed and connected to the motor 5 through the pump sleeve coupling 6, and the motor 5 drives the hydraulic pump 7 to suck oil from the oil tank through the oil suction filter 4.

[0040] The collapse assembly includes a movable pulley 27, a first fixed pulley 28, a steel wire rope 29 and a collapse body 30; the first fixed pulley 28 is fixedly arranged above and below the hydraulic cylinder 26, and the movable pulley 27 is rotatably arranged on the top of the hydraulic cylinder 26; the hydraulic cylinder 26 is connected to the steel wire rope 29 through the movable pulley 27, and the steel wire rope 29 is connected to the collapse body 30 through the first fixed pulley 28.

[0041] The collapse assembly also includes a second fixed pulley, which is fixedly arranged on the side of the collapse body 30 facing the hydraulic cylinder 26; the wire rope 29 passes through the first fixed pulley 28 and the second fixed pulley in sequence, and the wire rope 29 links the collapse body 30 and the hydraulic system through the first fixed pulley 28 and the second fixed pulley.

[0042] Optionally, a pulley seat is installed on the top of the free end of the piston rod arranged in the rod cavity of the hydraulic cylinder 26, and the movable pulley 27 is installed on the pulley seat; the hydraulic system works to drive the piston to run, thereby driving the pulley to move up and down.

[0043] Optionally, a ring sleeve 46 is provided on the outer periphery of one end of the steel wire rope 29 connected to the collapsed body 30 , and a steel wire rope clamp is provided to further fix the steel wire rope 29 .

[0044] The collapsed body 30 includes two groups of collapsed column assemblies 35, a column connecting frame 36 and a column table bracket 37; the two groups of collapsed column assemblies 35 are installed and connected through the column connecting frame 36, and the collapsed column assemblies 35 are respectively fixed at both ends of the column connecting frame 36; the column table bracket 37 is arranged between the two groups of collapsed column assemblies 35, and the column table bracket 37 is arranged below the column connecting frame 36.

[0045] A rotating support assembly 39 is installed at the bottom of the collapsed column assembly 35, and the collapsed column assembly 35 is rotatably connected to the rotating support assembly 39; a rotation protection assembly 45 is installed at the connection between the collapsed column assembly 35 and the rotating support assembly 39 to provide protection when the collapsed column assembly 35 rotates.

[0046] Optionally, the collapse assembly further includes an embedded assembly 48 and a basic steel frame assembly 49; the basic steel frame assembly 49 is installed and fixed to the target position through the embedded assembly 48; and the rotating support assembly 39 is fixedly arranged on the top of the basic steel frame assembly 49.

[0047] Optionally, a locking mechanism 40 is installed on the top of the collapse body 30 to lock the collapse body 30 .

[0048] Optionally, the collapse assembly further includes a wire rope tensioning assembly 52 , the wire rope 29 passes through the wire rope tensioning assembly 52 and is installed and connected thereto, and the tension of the wire rope 29 is controlled by the wire rope tensioning assembly 52 .

[0049] Working principle:

[0050] 1. Implementation of Rapid Collapse Scene in Collapse Performance System

[0051] The collapse start and rapid collapse of the collapse performance system: First, the third reversing valve 23 is energized to control the third cartridge valve 22 to be in the open state, so that the rod chamber of the hydraulic cylinder 26 is directly connected to the oil tank, wherein the third cartridge valve 22 and its pipeline are both large-diameter, which meets the requirements of the rod chamber of the hydraulic cylinder 26 for oil suction. Then, the first reversing valve 18 is energized to control the first cartridge valve 17 to be in the open state. At this time, the eccentric torque of the collapse body 30 and the weight of the pulley connected to the upper part of the hydraulic cylinder 26 can meet the starting of the hydraulic cylinder 26. As the collapse degree of the collapse body 30 increases, the force applied by the collapse body to the hydraulic cylinder 26 through the wire rope 29 will continue to increase, so that the collapse body 30 continues to accelerate and collapse. The fastest collapse speed of the collapse body 30 can be adjusted by the throttle valve 19; in the starting stage, if the starting force of the hydraulic cylinder 26 is not enough to overcome the static friction of the hydraulic cylinder piston and the piston rod at the seal, the second reversing valve 21 can be energized and reversed, thereby opening the third cartridge valve 22, and using the oil supply of the hydraulic pump 7 to actively drive the hydraulic cylinder. When the hydraulic cylinder can descend autonomously, the second reversing valve 21 can be de-energized, so that the third cartridge valve 22 is closed, and the active drive of the hydraulic cylinder is stopped.

[0052] Safe stop of the collapse performance system after collapse: When the collapse body 30 collapses rapidly and reaches the predetermined position, it is required to stop quickly and safely. At this time, the hydraulic system needs to respond quickly and absorb the kinetic energy of the collapse body by controlling the hydraulic cylinder 26 to achieve its quick and safe stop. The hydraulic control principle is as follows: First, the third reversing valve 23 is de-energized and the third cartridge valve 22 is controlled to be in the closed state, so that the rod chamber of the hydraulic cylinder 26 is disconnected from the oil tank. At this time, the rod chamber of the hydraulic cylinder loses the oil suction, forcing the hydraulic cylinder piston rod to quickly reduce its speed;

[0053] After a certain delay, the first reversing valve 18 is de-energized, and the first cartridge valve 17 is immediately closed. At this time, the oil circuit of the rodless chamber of the hydraulic cylinder is cut off, and the piston rod of the hydraulic cylinder stops running immediately, thereby stopping the collapse body immediately through the wire rope. However, the elongation of the wire rope will reduce the impact pressure when stopping, ensuring that the impact pressure of the hydraulic system does not exceed the limit pressure.

[0054] Furthermore, if the mass of the collapsed body is large, multiple groups of valves can be connected in parallel at the position of the first cartridge valve 17. When the collapse needs to be stopped, these parallel valves can be closed one by one or in combination to gradually cut off the oil circuit of the rodless chamber of the hydraulic cylinder, so as to reduce the impact and achieve a rapid and stable stop of the collapsed body 30; it should be noted that the first cartridge valve 17, the second cartridge valve 20 and the third cartridge valve 22, and their corresponding first reversing valve 18, the second reversing valve 21 and the third reversing valve 23 respectively, all cut off the oil circuit when the power is off, which to a certain extent ensures the safety and effectiveness of the hydraulic system in controlling the collapse of the collapsed body.

[0055] 2. Electric slow rise, reset and descent of the collapse system

[0056] After the collapse performance is completed, the collapse system needs to be raised and reset to prepare for the next collapse performance. The speed of the rise and reset is required to be slow, usually one tenth of the collapse speed, so the flow required by the hydraulic system is very small; the hydraulic control principle of the collapse system rise and reset is as follows: the motor 5 drives the hydraulic pump 7 to rotate through the pump sleeve coupling 6, and selects the higher system pressure set by the electromagnetic overflow valve 9. At this time, when the electromagnet DT3 set by the electromagnetic reversing valve 10 is energized, the hydraulic pump outlet pressure oil is supplied to the rodless chamber of the hydraulic cylinder, pushing the hydraulic cylinder piston rod out, and at the same time the oil in the rod chamber returns to the oil tank 1 through the one-way throttle valve 12. The one-way throttle valve 12 can adjust the speed of the collapse system rise and reset. When the collapse system rises and resets to the predetermined position, the electromagnet DT3 set by the electromagnetic reversing valve 10 loses power. At this time, the hydraulic cylinder stops running. When the collapse system is stopped, the good sealing performance of the hydraulic control one-way valve 11 is used to achieve the position retention of the hydraulic cylinder.

[0057] During system debugging or system maintenance, the collapse system is required to have the function of slow electric descent. The hydraulic control principle of the electric descent of the collapse system is as follows: the motor 5 drives the hydraulic pump 7 to rotate through the pump sleeve coupling 6, and selects the lower system pressure set by the electromagnetic overflow valve 9. At this time, when the electromagnet DT4 of the electromagnetic reversing valve 10 is energized, the hydraulic pump outlet pressure oil is supplied to the rod chamber of the hydraulic cylinder, pushing the hydraulic cylinder piston rod to retract. At this time, the oil in the rodless chamber returns to the oil tank 1 through the balance valve 13 and the one-way throttle valve 12. The speed of the electric descent of the collapse system can be adjusted through the one-way throttle valve 12, and the balance valve 13 can stabilize the creeping phenomenon caused by gravity during the descent process. When the collapse system slowly descends to the predetermined position, the electromagnet DT4 of the electromagnetic reversing valve 10 loses power. At this time, the hydraulic cylinder stops running, thereby stopping the collapse system through the wire rope.

[0058] The above is only a preferred specific implementation method of the present application; however, the protection scope of the present application is not limited thereto; any technician familiar with the technical field within the technical scope disclosed in the present application, who makes equivalent replacements or changes based on the technical solution and improved ideas of the present application, shall be covered within the protection scope of the present application.

Claims

1. A hydraulically controlled collapse mechanism, characterized in that: It includes a hydraulic system and a collapse component; the output end of the hydraulic system is connected to the collapse component to control the start and reset of the collapse component; The hydraulic system further includes a hydraulic cylinder (26), which is an actuator of the hydraulic system; The collapse assembly comprises a movable pulley (27), a first fixed pulley (28), a steel wire rope (29) and a collapse body (30); the first fixed pulley (28) is fixedly arranged above and below the hydraulic cylinder (26), respectively, and the movable pulley (27) is rotatably arranged on the top of the hydraulic cylinder (26); the hydraulic cylinder (26) is connected to the steel wire rope (29) through the movable pulley (27), and the steel wire rope (29) is connected to the collapse body (30) through the first fixed pulley (28).

2. A hydraulically controlled collapse mechanism according to claim 1, characterized in that: The hydraulic system comprises an oil tank (1), a first oil outlet oil circuit (31) and an oil suction oil circuit (32), one end of the first oil outlet oil circuit (31) is connected to the oil tank (1), and one end of the oil suction oil circuit (32) is connected to the oil tank (1); a first cartridge valve (17), a first reversing valve (18) and a throttle valve (19) are sequentially arranged on the first oil outlet oil circuit (31); the first oil outlet oil circuit (31) is an oil circuit for discharging oil from the oil tank when the system collapses; the oil suction oil circuit (32) is an oil circuit for absorbing oil when the system collapses; the first cartridge valve (17) is an on-off control valve on the first oil outlet oil circuit (31) when the system suddenly collapses, the first reversing valve (18) is a pilot control valve of the first cartridge valve (17), and the throttle valve (19) is used to control the speed when the system collapses.

3. A hydraulically controlled collapse mechanism according to claim 2, characterized in that: The hydraulic system further comprises an electromagnetic reversing valve (10), a hydraulically controlled one-way valve (11), a one-way throttle valve (12) and a balancing valve (13); the electromagnetic reversing valve (10) is a directional control valve for the collapse system during electric rise, reset and descent; the hydraulically controlled one-way valve (11) is a control element for the equipment to maintain its position when it stops; the one-way throttle valve (12) is a speed regulating valve for electric rise, reset and descent; and the balancing valve (13) is used to maintain the stability of the system operation when the system is electrically lowered; The hydraulic cylinder (26) includes a rod chamber and a rodless chamber; the end of the first oil outlet oil circuit (31) is divided into a first branch oil circuit (311) and a second branch oil circuit (312), and the end of the first branch oil circuit (311) is installed and connected to the rodless chamber of the hydraulic cylinder (26); the second branch oil circuit (312) is installed and connected to the balance valve (13), the one-way throttle valve (12) and the hydraulic control one-way valve (11) in sequence, and the end of the second branch oil circuit (312) is installed and connected to the electromagnetic reversing valve (10) is installed and connected to the first output port; a second cartridge valve (20) and a second reversing valve (21) are installed in sequence between the second branch oil circuit (312) between the electromagnetic reversing valve (10) and the hydraulically controlled one-way valve (11) and the second branch oil circuit (312) at the front end of the balancing valve (13); the second cartridge valve (20) is a control valve on the auxiliary control circuit when the system collapses, and the second reversing valve (21) is a pilot control valve of the second cartridge valve (20).

4. A hydraulically controlled collapse mechanism according to claim 3, characterized in that: The end of the oil suction circuit (32) away from the oil tank (1) is provided with a third cartridge valve (22) and a third reversing valve (23) in sequence; the third cartridge valve (22) is an on-off control valve on the oil suction circuit (32), and the third reversing valve (23) is a pilot control valve of the third cartridge valve (22); the oil suction circuit (32) is provided with a third branch oil circuit (321) and a fourth branch oil circuit (322) through the third cartridge valve (22); the end of the third branch oil circuit (321) is connected to the rod chamber of the hydraulic cylinder (26); the fourth branch oil circuit (322) is connected to the balance valve (13), the one-way throttle valve (12) and the hydraulic control one-way valve (11) in sequence, and the end of the fourth branch oil circuit (322) is connected to the second output port provided on the electromagnetic reversing valve (10).

5. A hydraulically controlled collapse mechanism according to claim 4, characterized in that: A first pressure measuring joint (24) is provided on the third branch oil circuit (321) between the third cartridge valve (22) and the hydraulic cylinder (26). The first pressure measuring joint (24) is used to observe the pressure of the rod chamber of the hydraulic cylinder during debugging. A second pressure measuring joint (25) is provided on the first branch oil circuit (311). The second pressure measuring joint (25) is used to observe the pressure of the rodless chamber of the hydraulic cylinder during debugging.

6. A hydraulically controlled collapse mechanism according to claim 1, characterized in that: The hydraulic system further comprises a second oil outlet circuit (33); an oil suction filter (4) is provided in the oil tank (1); one end of the second oil outlet circuit (33) passes through the oil tank (1) and is installed and connected to the oil suction filter (4); a hydraulic pump (7), a one-way valve (8), a pressure gauge (14) and a pressure sensor (15) are sequentially provided on the second oil outlet circuit (33); the output end of the hydraulic pump (7) is installed and connected to the input end of the one-way valve (8), and the one-way valve (8) prevents the high-pressure oil from flowing back; the pressure gauge (14) and the pressure sensor (15) are used to observe the real-time pressure of the system.

7. A hydraulically controlled collapse mechanism according to claim 6, characterized in that: The second oil outlet circuit (33) is sequentially connected to the balance valve (13), the one-way throttle valve (12) and the hydraulic one-way valve (11), and the end of the second oil outlet circuit (33) is connected to the oil inlet provided on the electromagnetic reversing valve (10).

8. The hydraulically controlled collapse mechanism according to claim 3, characterized in that: The hydraulic system further includes an oil return circuit (34); one end of the oil return circuit (34) is connected to the oil tank (1); an oil filter (16) is provided on the oil return circuit (34), and the oil filter (16) is a hydraulic accessory for ensuring the cleanliness of the hydraulic medium of the system; the oil return circuit (34) is sequentially connected to the balance valve (13), the one-way throttle valve (12) and the hydraulic control one-way valve (11), and the end of the oil return circuit (34) is connected to the oil return port provided on the electromagnetic reversing valve (10).

9. A hydraulically controlled collapse mechanism according to claim 8, characterized in that: An electromagnetic overflow valve (9) is provided between the second oil outlet passage (33) between the one-way valve (8) and the pressure sensor (15) and the oil return passage (34) between the oil filter (16) and the balancing valve (13). The electromagnetic overflow valve (9) is used to adjust the rated pressure of the system.

10. The hydraulically controlled collapse mechanism according to claim 6, characterized in that: The hydraulic system further comprises a pump sleeve coupling (6) and a motor (5); the hydraulic pump (7) is mounted and connected to the motor (5) via the pump sleeve coupling (6), and the motor (5) drives the hydraulic pump (7) to absorb oil from the oil tank through the oil suction filter (4).

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