Device for lifting stage by using liquid in automatic counterweight manner

Abstract

The invention relates to the technical field of stage lifting equipment, and discloses an automatic balance weight type stage lifting device through liquid, which comprises a base, and a support lifting assembly is arranged on the base; two fixing columns are arranged on the left side and the right side of the base correspondingly, the two fixing columns are symmetrically arranged, each fixing column is in an L shape, an opening is formed in the position, close to the bottom end, of each fixing column, a first pulley is rotationally arranged in each opening, and a transverse guide plate is arranged at the top end of each fixing column; the transverse guide plate is sequentially and rotationally provided with a second pulley and a third pulley, and two protection assemblies are arranged in the middle of the base. The invention aims to avoid the unstable phenomena of shaking, inclination and the like caused by overlarge local stress of the table-board frame body, ensure the stable operation of the table-board frame body, and can perform emergency braking on the table-board frame body, so that the falling speed of the table-board frame body can be effectively controlled in an extremely short time in the braking process, and the safety of the table-board frame body is ensured. Therefore, irreparable losses such as equipment damage and casualties are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of stage lifting equipment, and particularly to a device for an automatically weighted lifting stage using liquid. Background Art

[0002] The stage lifting device is a core component of the modern stage machinery system. The stage lifting device is a device system that makes the stage surface or part of the stage structure achieve vertical or inclined lifting movement through mechanical, hydraulic or motor-driven means. The stage lifting device is widely used in theaters, concert halls, TV studio halls, concerts and other places, and is used to dynamically adjust the stage height, switch scenes, enhance the performance effect or hide equipment. The stage lifting device is a typical representative of the combination of modern stage and engineering technology. Through the automated and precise lifting function, it greatly expands the dimension and creative space of stage performances.

[0003] As one of the core devices in large-scale performances, theaters, concerts and other occasions, the stability and safety of the stage lifting device directly affect the performance effect and personnel safety. Traditional stage lifting devices mostly use mechanical or hydraulic drive, and rely on manual adjustment or simple feedback control to achieve balance. However, in the case of complex load changes or emergencies, problems such as imbalance, vibration or tilt are likely to occur, seriously affecting the smoothness and safety of stage performances. In practical applications, there is an important problem with the stage lifting device, that is, the stage load is too large, which makes the stage bear a heavy burden during the lifting process, and the actual power of the driving motor is too high. This will not only pose a safety hazard, but also increase the operating cost of the equipment.

[0004] However, currently existing traditional counterweight devices are of fixed weight, which leads to the imbalance of the counterweight device when the stage load changes, causing the driving motor to do work on the unbalanced force of the counterweight device, resulting in excessive local stress on the table frame body and unstable phenomena such as shaking and tilting. And problems may also occur during use. If the stage drops rapidly due to a malfunction, it will cause unpredictable damage to the personnel and equipment on the stage. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art in the above background art, the purpose of the present invention is to avoid unstable phenomena such as shaking and tilting due to excessive local stress on the table frame body through the integrated setting of the auxiliary counterweight block and the fuel tank, ensure the smooth operation of the table frame body, make the stress on the table frame body uniform, guarantee the overall safety of the table frame body, and can perform emergency braking on the table frame body. This braking process can effectively control the falling speed of the table frame body within a very short time until it completely stops falling, thereby avoiding irreparable losses such as equipment damage and casualties caused by the rapid fall of the table frame body.

[0006] To achieve the above object, the technical solution of the present invention is as follows:

[0007] A device for a liquid automatic counterweight type lifting stage, comprising a base, and a support lifting assembly is arranged on the base;

[0008] The support lifting assembly includes fixed columns, openings, a first pulley, a second pulley, and a third pulley. Two fixed columns are respectively arranged on the left and right sides of the base, and two of the fixed columns are symmetrically arranged. The fixed columns are L-shaped. An opening is provided near the bottom end of the fixed column, and a first pulley is rotatably arranged in the opening. A horizontal guide plate is provided at the top end of the fixed column, and a second pulley and a third pulley are sequentially rotatably arranged on the horizontal guide plate. Two protection assemblies are arranged in the middle of the base, and the protection assemblies are both located between the two fixed columns. A table frame body is slidably arranged between the fixed column and the protection assembly. A buffer assembly is arranged on one side of the bottom of the table frame body close to the protection assembly, and the buffer assemblies are symmetrically arranged. A plurality of balance assemblies are also arranged on the base.

[0009] As a further solution of the present invention, the plurality of balance assemblies include columns fixedly arranged on the base. Two auxiliary counterweight blocks are slidably arranged on the columns. An oil tank is fixed between the two auxiliary counterweight blocks, and the auxiliary counterweight blocks and the oil tank are integrally formed. A steel wire rope is fixed to the top end of the oil tank. The oil tank passes through the third pulley and the second pulley in sequence through the steel wire rope and is fixedly connected to the bottom of the table frame body.

[0010] As a further solution of the present invention, an oil pump is arranged on one side of the bottom of the oil tank, and an oil delivery pipe is arranged at the other end of the oil pump. An oil storage pool is arranged on the base near one side of the column, and the other end of the oil delivery pipe is located in the oil storage pool.

[0011] As a further solution of the present invention, the protection assembly includes limit columns and guide grooves. A plurality of guide grooves are provided on the opposite surfaces of the two limit columns, and a buffer space is arranged between the two limit columns.

[0012] As a further solution of the present invention, the buffer assembly is slidably arranged in the buffer space.

[0013] As a further solution of the present invention, the buffer assembly includes a cover body arranged on one side of the bottom of the table frame body. A limiting plate is fixed to the bottom of the cover body, and an L-shaped limiting plate is fixed to the bottom of the limiting plate. A sliding groove is formed on the L-shaped limiting plate, and a pushing member is slidably arranged in the sliding groove. Two limiting clamping plates are slidably arranged on the L-shaped limiting plate on the side away from the pushing member. A magnetic member is fixed to the top end of the pushing member. An activity rod is arranged on the side of the pushing member away from the limiting clamping plate, and a spring is sleeved on the activity rod. The other end of the activity rod is provided with a fixing plate, and the fixing plate is fixed to the L-shaped limiting plate. An electromagnet is arranged on the side of the fixing plate close to the magnetic member, and the electromagnet attracts the magnetic member when powered on.

[0014] As a further solution of the present invention, a second sliding groove is formed on the limiting plate, and a sliding limiting member is slidably arranged in the second sliding groove.

[0015] As a further solution of the present invention, two driving assemblies are arranged in the middle of the base. The output end of the driving assembly is provided with a second steel wire rope. A plurality of limiting members are arranged on the base. The second steel wire rope passes through the limiting members and bypasses the first pulley and the second pulley and is fixedly connected to the bottom end of the table frame body.

[0016] As a further solution of the present invention, a speed sensor is arranged on the bottom end of the table frame body close to the buffer assembly.

[0017] As a further solution of the present invention, a vertical guide plate is fixedly arranged on one side of the fixed column.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] (1) During the lifting and lowering process of the table frame body of the present invention, the table frame body passes through the steel wire rope and successively bypasses the second pulley and the third pulley and is fixedly connected to the top of the table oil tank. A sensor is arranged on the table frame body. The number of people and weight and other information on the table frame body are measured through the sensor, and then the measured data is returned to the external control system. Then, the oil pump is controlled by the external control system. If the people on the table frame body are close to the left side of the top, then the oil in the oil storage tank is sucked into the oil tank through the oil pump and the oil pipeline arranged on the left side, so that the dynamic balance is always maintained on the table frame body, and vice versa. Through the integrated setting of the auxiliary counterweight block and the oil tank, the unstable phenomena such as shaking and tilting caused by excessive local stress on the table frame body are avoided, the smooth operation of the table frame body is ensured, the force on the table frame body is uniform, and the overall safety of the table frame body is guaranteed.

[0020] (2) With the provision of the protection component and the buffer component in the present invention, if a failure occurs during the operation of the table frame, causing the wire rope to break or other components to be damaged, resulting in an emergency fall accident of the table frame, when the speed sensor detects that the falling speed of the table frame is greater than the normal falling speed, since the electromagnet attracts the magnetic part in the energized state and the spring is in a compressed state at this time, the controller is used to control the power-off of the electromagnet. After the electromagnet and the magnetic part lose their attraction, under the action of the spring releasing its elastic potential energy, the pushing part moves rapidly in the chute towards the limit clamping plate. Since the two limit clamping plates are slidably arranged in the L-shaped limit plate, the pushing part pushes the two limit clamping plates out of the L-shaped limit plate to both sides, so that the limit clamping plates are located on both sides of the pushing part. Subsequently, when the pushing part moves to fit one side inside the L-shaped limit plate, the sliding limit part slidably arranged inside the limit plate slides downward, firmly clamping the pushing part on one side, so that the limit clamping plate pierces into the guide groove to perform an emergency braking on the table frame. This braking process can effectively control the falling speed of the table frame within a very short time until it completely stops falling, thereby avoiding irreparable losses such as equipment damage and casualties caused by the rapid fall of the table frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is a schematic isometric view of the present invention;

[0023] Figure 3 is a schematic diagram of the bottom structure of the table frame of the present invention;

[0024] Figure 4 is a schematic diagram of the structure of the protection component of the present invention;

[0025] Figure 5 is a schematic diagram of the structure of the balance component of the present invention;

[0026] Figure 6 is a schematic diagram of the structure of the support lifting component of the present invention;

[0027] Figure 7 is a schematic overall view of the buffer component of the present invention;

[0028] Figure 8 is a schematic diagram of a partial structure of the buffer component of the present invention.

[0029] In the figure: 10 - base; 11 - limiting member; 12 - driving assembly; 13 - second steel wire rope; 14 - table frame body; 15 - speed sensor; 100 - support lifting assembly; 101 - fixed column; 102 - opening; 103 - first pulley; 104 - second pulley; 105 - third pulley; 106 - transverse guide plate; 107 - vertical guide plate; 20 - fixed column; 200 - protection assembly; 201 - limiting column; 202 - guide groove; 203 - buffer space; 300 - buffer assembly; 301 - cover body; 302 - L-shaped limiting plate; 303 - limiting plate; 304 - limiting clamping plate; 305 - pushing member; 306 - chute; 307 - magnetic member; 308 - fixing plate; 309 - electromagnet; 310 - sliding limiting member; 311 - spring; 312 - movable rod; 400 - balance assembly; 401 - column; 402 - steel wire rope; 403 - auxiliary counterweight; 404 - fuel tank; 405 - oil pump; 406 - oil pipeline; 407 - oil storage pool. Detailed implementation manner

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise stated, the meaning of "plurality" is two or more.

[0032] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] Please refer to the attached Figure 1-8 , a device for an automatically liquid counterweighted lifting stage, comprising a base 10, on which a support lifting assembly 100 is provided;

[0034] The support lifting assembly 100 includes a fixed column 101, an opening 102, a first pulley 103, a second pulley 104, and a third pulley 105. The support lifting assembly 100 includes four fixed columns 101 fixed on the base 10, with two fixed columns 101 provided on each of the left and right sides of the base 10, and two of the fixed columns 101 are symmetrically arranged. The fixed column 101 is L-shaped, and an opening 102 is provided near the bottom end of the fixed column 101. The first pulley 103 is rotatably arranged in the opening 102. A transverse guide plate 106 is provided at the top end of the fixed column 101, and the second pulley 103 and the third pulley 105 are sequentially rotatably arranged on the transverse guide plate 106. Two protection assemblies 200 are provided in the middle of the base 10, and the protection assemblies 200 are both located between the two fixed columns 101. A table frame 14 is slidably arranged between the fixed column 101 and the protection assembly 200. A buffer assembly 300 is provided on one side of the bottom of the table frame 14 near the protection assembly 200, and the buffer assemblies 300 are symmetrically arranged. A plurality of balance assemblies 400 are also provided on the base 10.

[0035] Two driving assemblies 12 are provided in the middle of the base 10. The output end of the driving assembly 12 is provided with a second steel wire rope 13. A plurality of limit members 11 are provided on the base 10. The second steel wire rope 13 passes through the limit members 11 and bypasses the first pulley 103 and the second pulley 104 and is fixedly connected to the bottom end of the table frame 14. The driving assembly 12 includes a driving motor, a first-stage reducer, a clutch, and a backup reduction motor. The driving motor is provided with a main motor and a backup motor. When the main motor fails, it is urgently switched to the backup motor for use to complete the lifting process of the table frame 14. The lifting process of the table frame 14 is prior art and will not be specifically described herein.

[0036] A speed sensor 15 is provided at the bottom end of the tabletop frame 14 near one side of the buffer assembly 300. A controller is provided at the bottom of the tabletop frame 14. A vertical guide plate 107 is fixedly provided on one side of the fixed column 101. The setting of the vertical guide plate 107 ensures the stability of the device.

[0037] The position of the controller is set by the staff according to the actual situation during operation. The controller is used to control all the electrical appliances in this solution, including but not limited to sensors, motors, telescopic rods, water pumps, solenoid valves, heating wires, heat pumps, display screens, computer input devices, switch buttons, communication devices, lights, speakers, and microphones, etc.; The controller is an Intel processor, AMD processor, PLC controller, ARM processor or single-chip microcomputer, etc. Also included for supporting use are a main board, a memory module, a storage medium, and a power supply, etc.

[0038] A plurality of the balance assemblies 400 include columns 401 fixedly provided on the base 10. Two auxiliary counterweights 403 are slidably provided on the columns 401. An oil tank 404 is fixed between the two auxiliary counterweights 403. The auxiliary counterweights 403 and the oil tank 404 are integrally formed. A steel wire rope 402 is fixed to the top end of the oil tank 404. The oil tank 404 is fixedly connected to the bottom of the tabletop frame 14 through the steel wire rope 402 by passing around the third pulley 105 and the second pulley 103 in sequence.

[0039] One side of the bottom of the oil tank 404 is provided with an oil pump 405. The other end of the oil pump 405 is provided with an oil delivery pipe 406. An oil storage tank 407 is provided on the base 10 near one side of the column 401. The other end of the oil delivery pipe 406 is located in the oil storage tank 407. Specifically, during use, the oil pump 405 and the oil delivery pipe 406 are controlled by an external control system to suck the oil in the oil storage tank 407 into the oil tank 404, so that the tabletop frame 14 always maintains dynamic balance, ensuring the smooth operation of the tabletop frame 14, making the tabletop frame 14 stress evenly, and ensuring the overall safety of the tabletop frame 14.

[0040] The protection assembly 200 includes limit columns 201 and guide grooves 202. A plurality of guide grooves 202 are provided on the opposite sides of the two limit columns 201. And a buffer space 203 is provided between the two limit columns 201. The buffer assembly 300 is slidably provided in the buffer space 203. The setting of the buffer assembly 300 and the buffer space 203 facilitates the emergency braking of the tabletop frame 14.

[0041] The buffer assembly 300 includes a cover body 301 disposed on one side of the bottom of the table frame 14. A limit plate 303 is fixed to the bottom of the cover body 301. An L-shaped limit plate 302 is fixed to the bottom of the limit plate 303. A chute 306 is formed in the L-shaped limit plate 302. A pushing member 305 is slidably disposed in the chute 306. Two limit cards 304 are slidably disposed on one side of the L-shaped limit plate 302 away from the pushing member 305. A magnetic member 307 is fixed to the top end of the pushing member 305. An activity rod 312 is disposed on one side of the pushing member 305 away from the limit card 304. A spring 311 is sleeved on the activity rod 312. The other end of the activity rod 312 is provided with a fixing plate 308. The fixing plate 308 is fixed to the L-shaped limit plate 302. An electromagnet 309 is disposed on one side of the fixing plate 308 close to the magnetic member 307. The electromagnet 309 attracts the magnetic member 307 when it is energized. A second chute is formed in the limit plate 303. A sliding limit member 310 is slidably disposed in the second chute.

[0042] During the lifting process of the table frame 14 in the present invention, the table frame 14 is sequentially wound around the second pulley 103 and the third pulley 105 through the steel wire rope 402 and fixedly connected to the top of the table oil tank 404. A sensor is disposed on the table frame 14. Information such as the number of people and weight on the table frame 14 is measured by the sensor. Subsequently, the measured data is returned to an external control system. Then, the oil pump 405 is controlled by the external control system. If the people on the table frame 14 are close to the left side of the top, then the oil in the oil storage tank 407 is sucked into the oil tank 404 through the oil pump 405 and the oil pipeline 406 disposed on the left side, so that the dynamic balance is always maintained on the table frame 14. Vice versa. Through the integrated setting of the auxiliary counterweight 403 and the oil tank 404, unstable phenomena such as shaking and tilting caused by excessive local force on the table frame 14 are avoided, the smooth operation of the table frame 14 is ensured, the force on the table frame 14 is uniform, and the overall safety of the table frame 14 is guaranteed.

[0043] In the present invention, through the provision of the protection component 200 and the buffer component 300, if a failure occurs during the operation of the table frame 14, causing the steel wire rope 402 to break or other components to be damaged, resulting in an emergency fall accident of the table frame 14, when the speed sensor 15 detects that the falling speed of the table frame 14 is greater than the normal falling speed, since the electromagnet 309 attracts the magnetic member 307 in the energized state, at this time the spring 311 is in a compressed state. At this time, the controller controls the electromagnet 309 to be powered off. After the electromagnet 309 loses its attraction to the magnetic member 307, under the action of the elastic potential energy released by the spring 311, the pushing member 305 quickly moves in the chute 306 towards the direction of the limit clamping plate 304. Since the two limit clamping plates 304 are slidably arranged in the L-shaped limit plate 302, the pushing member 305 pushes the two limit clamping plates 304 out of the L-shaped limit plate 302 to both sides, so that the limit clamping plates 304 are located on both sides of the pushing member 305. Subsequently, when the pushing member 305 moves to fit the inner side of the L-shaped limit plate 302, at this time the sliding limit member 310 slidably arranged inside the limit plate 303 slides downward, firmly clamping the pushing member 305 on one side, so that the limit clamping plate 304 penetrates into the guiding groove 202 to perform an emergency brake on the table frame 14. This braking process can effectively control the falling speed of the table frame 14 within a very short time until it completely stops falling, thereby avoiding irreparable losses such as equipment damage and casualties caused by the rapid fall of the table frame 14.

[0044] Finally, it should be noted that the driving components and other components involved in the present invention are all common standard components or components known to those skilled in the art. Their structures and principles can all be known by those skilled in the art through technical manuals or obtained through conventional experimental methods. In the idle space of the present device, all the above-mentioned electrical components, which refer to power elements, electrical components, and the adapted controller and power supply, are connected by wires. The specific connection means should refer to the working principle of the present invention. The electrical components are electrically connected in accordance with the sequence of their successive operations, and their detailed connection means are all well-known technologies in the art.

[0045] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A device for an automatically weight-balanced lifting stage using liquid, comprising a base (10), characterized in that, A support lifting assembly (100) is provided on the base (10). The support lifting assembly (100) includes fixed columns (101), openings (102), a first pulley (103), a second pulley (104), and a third pulley (105). Two fixed columns (101) are respectively provided on the left and right sides of the base (10), and two of the fixed columns (101) are symmetrically arranged. The fixed columns (101) are L-shaped. An opening (102) is provided near the bottom end of the fixed column (101), and a first pulley (103) is rotatably arranged in the opening (102). A transverse guide plate (106) is provided at the top end of the fixed column (101), and a second pulley (103) and a third pulley (105) are sequentially rotatably arranged on the transverse guide plate (106). Two protective assemblies (200) are provided in the middle of the base (10), and the protective assemblies (200) are both located between the two fixed columns (101). A table frame body (14) is slidably arranged between the fixed column (101) and the protective assembly (200). A buffer assembly (300) is provided on one side of the bottom of the table frame body (14) close to the protective assembly (200), and the buffer assemblies (300) are symmetrically arranged. A plurality of balance assemblies (400) are also provided on the base (10).

2. The device for an automatically liquid counterweighted lifting stage according to claim 1, characterized in that, The plurality of balance assemblies (400) include columns (401) fixedly arranged on the base (10). Two auxiliary counterweight blocks (403) are slidably arranged on the columns (401). An oil tank (404) is fixed between the two auxiliary counterweight blocks (403). The auxiliary counterweight blocks (403) and the oil tank (404) are integrally formed. A steel wire rope (402) is fixed to the top end of the oil tank (404). The oil tank (404) is sequentially wound around the third pulley (105) and the second pulley (103) through the steel wire rope (402) and is fixedly connected to the bottom of the table frame body (14).

3. The device for an automatically liquid counterweighted lifting stage according to claim 2, wherein, An oil pump (405) is provided on one side of the bottom of the oil tank (404). The other end of the oil pump (405) is provided with an oil delivery pipe (406). An oil storage tank (407) is provided on one side of the base (10) close to the column (401). The other end of the oil delivery pipe (406) is located in the oil storage tank (407).

4. The device for an automatically liquid counterweighted lifting stage according to claim 1, wherein The protective assembly (200) includes limit columns (201) and guide grooves (202). A plurality of guide grooves (202) are provided on the opposite surfaces of the two limit columns (201), and a buffer space (203) is provided between the two limit columns (201).

5. The device for an automatically liquid counterweighted lifting stage according to claim 4, characterized in that, The buffer assembly (300) is slidably arranged in the buffer space (203).

6. The device for an automatically liquid counterweighted lifting stage according to claim 4, characterized in that, The buffer assembly (300) includes a cover body (301) provided on one side of the bottom of the table frame body (14). A limiting plate (303) is fixed to the bottom of the cover body (301). An L-shaped limiting plate (302) is fixed to the bottom of the limiting plate (303). A sliding groove (306) is formed in the L-shaped limiting plate (302). A pushing member (305) is slidably arranged in the sliding groove (306). Two limiting clamping plates (304) are slidably arranged on one side of the L-shaped limiting plate (302) away from the pushing member (305). A magnetic member (307) is fixed to the top end of the pushing member (305). An activity rod (312) is arranged on one side of the pushing member (305) away from the limiting clamping plate (304). A spring (311) is sleeved on the activity rod (312). The other end of the activity rod (312) is provided with a fixing plate (308). The fixing plate (308) is fixed to the L-shaped limiting plate (302). An electromagnet (309) is arranged on one side of the fixing plate (308) close to the magnetic member (307). The electromagnet (309) attracts the magnetic member (307) when it is in the energized state.

7. The device for an automatically liquid-weighted lifting stage according to claim 5, wherein, A second sliding groove is formed in the limiting plate (303). A sliding limiting member (310) is slidably arranged in the second sliding groove.

8. The device for an automatically liquid counterweighted lifting stage according to claim 1, characterized in that, Two driving assemblies (12) are arranged in the middle of the base (10). A second steel wire rope (13) is arranged at the output end of the driving assembly (12). A plurality of limiting members (11) are arranged on the base (10). The second steel wire rope (13) passes through the limiting members (11) and bypasses the first pulley (103) and the second pulley (104) and is fixedly connected to the bottom end of the table frame body (14).

9. The device for an automatically liquid counterweighted lifting stage according to claim 1, wherein, A speed sensor (15) is arranged on one side of the bottom end of the table frame body (14) close to the buffer assembly (300).

10. The device for an automatically liquid counterweighted lifting stage according to claim 1, characterized in that, A vertical guide plate (107) is fixedly arranged on one side of the fixed column (101).

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