Lifting stage with high stability

Abstract

The utility model relates to the technical field of lifting stages, in particular to a high-stability lifting stage which comprises a base, the inner wall of the base is in sliding connection with the outer wall of a main lifting piece, a PLC receives position signals input into a position sensor and feedback position signals and outputs control servo valve signals, and the control servo valve is connected with the base. A piston rod of a servo oil cylinder is controlled by controlling a servo valve, the servo oil cylinder pushes a first lower sliding block and a second lower sliding block to slide through a first pushing rod and a second pushing rod respectively, the first lower sliding block and the second lower sliding block slide to drive a first upper sliding block and a second upper sliding block to slide through a main lifting frame and an auxiliary lifting frame respectively, and therefore a lifting plate ascends or descends. In the sine wave curve type accelerated motion, the absolute value of the acceleration in the acceleration process is gradually reduced, the acceleration acting force is also slowly and stably reduced to zero, the absolute value of the acceleration in the deceleration process is gradually increased, and the acceleration acting force is also slowly and stably increased, so that the stage has higher comfort during acceleration, deceleration and uniform motion.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting stages, in particular to a lifting stage with high stability. Background Art

[0002] The lifting stage is the most commonly used product for the stage. Its main function is to move the scenery and actors up and down when the scene changes. In order to highlight the main actors, the stage will rise slowly, and the actors will dance on the stage, creating ups and downs on the stage. At the same time, the process of stage lifting can also increase the performance effect. The existing stage driven by servo cylinders needs to experience acceleration, uniform motion, and deceleration during the lifting process. The change in acceleration is the key factor for the stage to lift comfortably for the human body.

[0003] At present, the traditional stage lifting deceleration and acceleration movements on the market are mostly realized in a uniform acceleration manner. During the switching process between accelerated movement and uniform motion, due to the sudden disappearance of the acceleration force, some people will feel unstable or dizzy. During the switching process between uniform motion and uniform deceleration motion, due to the sudden appearance of the acceleration force, there will be the same problem, which brings inconvenience to people's use. Utility Model Content

[0004] The purpose of the present utility model is to provide a lifting stage with high stability, so as to solve the problem mentioned in the above background technology that some people may feel unstable or dizzy due to the sudden disappearance of the acceleration force. To achieve the above purpose, the present utility model provides the following technical solutions: a lifting stage with high stability, comprising a base, the inner wall of the base is slidably connected to the outer wall of the main lifting member, the outer wall of the main lifting member is rotatably connected to the inner wall of the auxiliary lifting member, one side of the main lifting member is fixedly connected to one side of the main transmission member, one side of the auxiliary lifting member is fixedly connected to one side of the auxiliary transmission member, one side of the main transmission member is fixedly connected to one side of the lifting stage, and one side of the base is fixedly connected to one side of the hydraulic system.

[0005] One side of the auxiliary transmission member is fixedly connected to one side of the lifting stage. The number of the main transmission member and the auxiliary transmission member are both two. The two main transmission members and the two auxiliary transmission members are mirror-imaged along the transverse central axis of the base.

[0006] Preferably, the base includes a base, a main support frame and an auxiliary support frame, the top of one side of the base is fixedly connected to the bottom of the main support frame, and the top of the other side of the base is fixedly connected to the bottom of the auxiliary support frame, the top of the base is respectively provided with a main sliding groove and an auxiliary sliding groove, and the top of both sides of the base is provided with fixed blocks, the top of the main support frame is provided with a main support groove, and the top of the auxiliary support frame is provided with an auxiliary support groove, the number of the main support frames and the auxiliary support frames are both two, and the two main support frames and the two auxiliary support frames are mirror-imaged along the central axis of the base.

[0007] Preferably, the main lifting member is composed of a pushing rod, a lower sliding block, a main lifting frame and an upper sliding block, the front side of the pushing rod is fixedly connected to the back side of the lower sliding block, and the outer wall of the bottom of the lower sliding block is slidably connected to the inner wall of the main sliding groove, and the inner wall of the lower sliding block is rotatably connected to the outer wall of one side of the main lifting frame, and the outer wall on the other side of the main lifting frame is rotatably connected to the inner wall of the upper sliding block.

[0008] Preferably, the auxiliary lifting member is composed of a second pushing rod, a second lower sliding block, an auxiliary lifting frame and a second upper sliding block, the front face of the second pushing rod is fixedly connected to the back face of the second lower sliding block, and the outer wall of the bottom of the second lower sliding block is slidably connected to the inner wall of the auxiliary sliding groove, the inner wall of the second lower sliding block is rotatably connected to the outer wall of one side of the auxiliary lifting frame, and a rotating hole is provided on the inner wall of the auxiliary lifting frame, the inner wall of the rotating hole is rotatably connected to the outer wall of the main lifting frame, and the outer wall on the other side of the auxiliary lifting frame is rotatably connected to the inner wall of the second upper sliding block, the number of the first lower sliding block, the first upper sliding block, the second lower sliding block and the second upper sliding block are all two, and the two first lower sliding blocks, the two first upper sliding blocks, the two second lower sliding blocks and the two second upper sliding blocks are all mirror-arranged along the transverse central axis of the base.

[0009] Preferably, the main transmission member consists of a main transmission rod, a main sliding rod, a main connecting rod, a main supporting block and a main connecting block, one side of the main transmission rod is fixedly connected to one side of an upper sliding block, and a sliding hole is opened on the inner wall of the other side of the main transmission rod, the inner wall of the sliding hole is slidably connected to the outer wall of the main sliding rod, and the outer wall of the top of the main sliding rod is rotatably connected to the inner wall of the main connecting rod, the outer wall of one side of the main connecting rod is rotatably connected to the inner wall of the main supporting block, and the outer wall of the other side of the main connecting rod is rotatably connected to the inner wall of the main connecting block, and the outer wall of the bottom of the main sliding rod is slidably abutted against the inner wall of the main supporting groove.

[0010] Preferably, the auxiliary transmission member includes an auxiliary transmission rod, an auxiliary sliding rod, an auxiliary connecting rod, an auxiliary support block and an auxiliary connecting block, one side of the auxiliary transmission rod is fixedly connected to one side of the upper sliding block 2, and the inner wall of the other side of the auxiliary transmission rod is provided with a sliding hole 2, the inner wall of the sliding hole 2 is slidably connected to the outer wall of the auxiliary sliding rod, and the outer wall of the top of the auxiliary sliding rod is rotatably connected to the inner wall of the auxiliary connecting rod, the outer wall of one side of the auxiliary connecting rod is rotatably connected to the inner wall of the auxiliary support block, and the outer wall of the other side of the auxiliary connecting rod is rotatably connected to the inner wall of the auxiliary connecting block, and the outer wall of the bottom of the auxiliary sliding rod is slidably abutted against the inner wall of the auxiliary support groove.

[0011] Preferably, the lifting stage consists of a lifting plate, a stage plate and a guardrail, a main lifting groove and an auxiliary lifting groove are respectively provided at the bottom of both sides of the lifting plate, and the inner wall of the main lifting groove is slidably connected to the outer wall of the top of the upper sliding block one, the inner wall of the auxiliary lifting groove is slidably connected to the outer wall of the top of the upper sliding block two, and the top of the lifting plate is movably abutted against the bottom of the stage plate, one side of the lifting plate is fixedly connected to one side of the main support block, and the other side of the lifting plate is fixedly connected to one side of the auxiliary support block, a main connecting groove and an auxiliary connecting groove are respectively provided at the bottom of both sides of the stage plate, and the inner wall of the main connecting groove is slidably connected to the outer wall of the top of the main connecting block, and the inner wall of the auxiliary connecting groove is slidably connected to the outer wall of the top of the auxiliary connecting block.

[0012] Preferably, the hydraulic system includes a hydraulic pump station, a servo valve, a PLC, a position sensor and a servo cylinder, the hydraulic pump station is connected to the servo valve circuit, and the servo valve is connected to the PLC circuit, the PLC is connected to the position sensor circuit, and the position sensor is fixedly mounted on the servo cylinder piston rod, the servo cylinder is connected to the oil circuit of the hydraulic pump station, and the number of servo cylinders is two, one side of one of the servo cylinders is fixedly connected to one side of one of the fixed blocks, and one end of the piston rod of one of the servo cylinders is fixedly connected to one side of push rod one, one side of the other servo cylinder is fixedly connected to one side of the other fixed block, and one end of the piston rod of the other servo cylinder is fixedly connected to one side of push rod two.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the utility model, the PLC receives the position signal and feedback position signal of the input position sensor, and outputs the control servo valve signal, and controls the servo oil cylinder piston rod by controlling the servo valve, and the servo oil cylinder pushes the lower sliding block 1 and the lower sliding block 2 to slide respectively through the push rod 1 and the push rod 2, and the lower sliding block 1 and the lower sliding block 2 slide respectively through the main lifting frame and the auxiliary lifting frame to drive the upper sliding block 1 and the upper sliding block 2 to slide, so that the lifting plate rises or falls, and the sine wave curve accelerates the movement, the absolute value of the acceleration gradually decreases during the acceleration process, and the acceleration force also decreases to zero slowly and steadily at the same time, and the absolute value of the acceleration gradually increases during the deceleration process, and the acceleration force also increases slowly and steadily at the same time, so that the stage has a higher sense of comfort during acceleration and deceleration and uniform motion, which brings convenience to people.

[0015] In the utility model, when the lower sliding block 1 and the lower sliding block 2 slide, they respectively drive the main sliding rod and the auxiliary sliding rod through the main transmission rod and the auxiliary transmission rod, the main sliding rod and the auxiliary sliding rod respectively push the main support frame and the auxiliary support frame to slide upward, the main sliding rod and the auxiliary sliding rod slide up and down and respectively push the main connecting rod and the auxiliary connecting rod to rotate, the main connecting rod and the auxiliary connecting rod respectively drive the main connecting block and the auxiliary connecting block to slide so that the stage board rises to the same height as the top of the guardrail, so as to prevent the guardrail from blocking the sight after the stage board rises, which brings convenience to people's use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model;

[0018] Figure 3 It is an exploded view of the utility model;

[0019] Figure 4 This is an exploded view of the lifting stage in the utility model;

[0020] Figure 5 It is a circuit diagram of the hydraulic system in the utility model;

[0021] Figure 6 The curve of the real-time position S of the closed-loop control stage and time t Figure 1 ;

[0022] Figure 7 The curve of the real-time position S of the closed-loop control stage and time t Figure 2 ;

[0023] Figure 8 The curve of the real-time position S of the closed-loop control stage and time t Figure 3 .

[0024] In the figure: 1, base; 101, base; 102, main support frame; 103, auxiliary support frame; 2, main lifting member; 201, push rod 1; 202, lower sliding block 1; 203, main lifting frame; 204, upper sliding block 1; 3, auxiliary lifting member; 301, push rod 2; 302, lower sliding block 2; 303, auxiliary lifting frame; 304, upper sliding block 2; 4, main transmission member; 401, main transmission rod; 402, main sliding rod; 403, main link Connecting rod; 404, main supporting block; 405, main connecting block; 5, auxiliary transmission member; 501, auxiliary transmission rod; 502, auxiliary sliding rod; 503, auxiliary connecting rod; 504, auxiliary supporting block; 505, auxiliary connecting block; 6, lifting stage; 601, lifting plate; 602, stage plate; 603, guardrail; 7, hydraulic system; 701, hydraulic pump station; 702, servo valve; 703, PLC; 704, position sensor; 705, servo cylinder. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figures 1 to 5 The utility model provides a technical solution: a lifting stage with high stability, including a base 1, the inner wall of the base 1 is slidingly connected to the outer wall of a main lifting member 2, the outer wall of the main lifting member 2 is rotatably connected to the inner wall of an auxiliary lifting member 3, one side of the main lifting member 2 is fixedly connected to one side of a main transmission member 4, one side of the auxiliary lifting member 3 is fixedly connected to one side of an auxiliary transmission member 5, one side of the main transmission member 4 is fixedly connected to one side of a lifting stage 6, and one side of the base 1 is fixedly connected to one side of a hydraulic system 7.

[0027] One side of the auxiliary transmission member 5 is fixedly connected to one side of the lifting stage 6 . The number of the main transmission member 4 and the number of the auxiliary transmission members 5 are both two. The two main transmission members 4 and the two auxiliary transmission members 5 are mirror-arranged along the transverse central axis of the base 1 .

[0028] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the base 1 includes a base 101, a main support frame 102 and an auxiliary support frame 103. The top of one side of the base 101 is fixedly connected to the bottom of the main support frame 102, and the top of the other side of the base 101 is fixedly connected to the bottom of the auxiliary support frame 103. The top of the base 101 is respectively provided with a main sliding groove and an auxiliary sliding groove, and the top of both sides of the base 101 is provided with a fixed block. The top of the main support frame 102 is provided with a main support groove, and the top of the auxiliary support frame 103 is provided with an auxiliary support groove. The number of the main support frames 102 and the auxiliary support frames 103 are both two, and the two main support frames 102 and the two auxiliary support frames 103 are mirror-imaged along the central axis of the base 101.

[0029] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the main lifting member 2 is composed of a pushing rod 201, a lower sliding block 202, a main lifting frame 203 and an upper sliding block 204. The front side of the pushing rod 201 is fixedly connected to the back side of the lower sliding block 202, and the outer wall of the bottom of the lower sliding block 202 is slidably connected to the inner wall of the main sliding groove, and the inner wall of the lower sliding block 202 is rotatably connected to the outer wall of one side of the main lifting frame 203, and the outer wall of the other side of the main lifting frame 203 is rotatably connected to the inner wall of the upper sliding block 204.

[0030] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the auxiliary lifting member 3 is composed of a pushing rod 201, a lower sliding block 202, an auxiliary lifting frame 303 and an upper sliding block 204, the front side of the pushing rod 201 is fixedly connected to the back side of the lower sliding block 202, and the outer wall of the bottom of the lower sliding block 202 is slidably connected to the inner wall of the auxiliary sliding groove, the inner wall of the lower sliding block 202 is rotatably connected to the outer wall of one side of the auxiliary lifting frame 303, and the inner wall of the auxiliary lifting frame 303 is provided with a rotating hole, the inner wall of the rotating hole is rotatably connected to the outer wall of the main lifting frame 203, and the outer wall of the other side of the auxiliary lifting frame 303 is rotatably connected to the inner wall of the upper sliding block 204, the number of the lower sliding block 1 202, the upper sliding block 1 204, the lower sliding block 2 302 and the upper sliding block 2 304 are all two, and the two lower sliding blocks 1 202, the two upper sliding blocks 1 204, the two lower sliding blocks 2 302 and the two upper sliding blocks 2 304 are all mirror-arranged along the transverse central axis of the base 101.

[0031] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the main transmission member 4 is composed of a main transmission rod 401, a main sliding rod 402, a main connecting rod 403, a main support block 404 and a main connecting block 405. One side of the main transmission rod 401 is fixedly connected to one side of the upper sliding block 204, and a sliding hole 1 is opened on the inner wall of the other side of the main transmission rod 401. The inner wall of the sliding hole 1 is slidingly connected to the outer wall of the main sliding rod 402, and the outer wall of the top of the main sliding rod 402 is rotatably connected to the inner wall of the main connecting rod 403, the outer wall of one side of the main connecting rod 403 is rotatably connected to the inner wall of the main support block 404, and the outer wall of the other side of the main connecting rod 403 is rotatably connected to the inner wall of the main connecting block 405, and the outer wall of the bottom of the main sliding rod 402 is slidably abutted against the inner wall of the main support groove.

[0032] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the auxiliary transmission member 5 includes an auxiliary transmission rod 501, an auxiliary sliding rod 502, an auxiliary connecting rod 503, an auxiliary support block 504 and an auxiliary connecting block 505. One side of the auxiliary transmission rod 501 is fixedly connected to one side of the upper sliding block 2 304, and the inner wall of the other side of the auxiliary transmission rod 501 is provided with a sliding hole 2, the inner wall of the sliding hole 2 is slidingly connected to the outer wall of the auxiliary sliding rod 502, and the outer wall of the top of the auxiliary sliding rod 502 is rotatably connected to the inner wall of the auxiliary connecting rod 503, the outer wall of one side of the auxiliary connecting rod 503 is rotatably connected to the inner wall of the auxiliary support block 504, and the outer wall of the other side of the auxiliary connecting rod 503 is rotatably connected to the inner wall of the auxiliary connecting block 505, and the outer wall of the bottom of the auxiliary sliding rod 502 is slidably abutted against the inner wall of the auxiliary support groove.

[0033] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the lifting stage 6 is composed of a lifting plate 601, a stage plate 602 and a guardrail 603. The bottoms of both sides of the lifting plate 601 are respectively provided with main lifting grooves and auxiliary lifting grooves, and the inner wall of the main lifting groove is slidably connected to the outer wall of the top of the upper sliding block 204, the inner wall of the auxiliary lifting groove is slidably connected to the outer wall of the top of the upper sliding block 304, and the top of the lifting plate 601 is movably abutted against the bottom of the stage plate 602, one side of the lifting plate 601 is fixedly connected to one side of the main support block 404, and the other side of the lifting plate 601 is fixedly connected to one side of the auxiliary support block 504, the bottoms of both sides of the stage plate 602 are respectively provided with main connecting grooves and auxiliary connecting grooves, and the inner wall of the main connecting groove is slidably connected to the outer wall of the top of the main connecting block 405, and the inner wall of the auxiliary connecting groove is slidably connected to the outer wall of the top of the auxiliary connecting block 505, and when the main lifting frame 203 and the auxiliary lifting frame 303 rotate, they respectively drive the upper sliding block 204 and the upper sliding block 304 to slide.

[0034] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the hydraulic system 7 includes a hydraulic pump station 701, a servo valve 702, a PLC 703, a position sensor 704 and a servo cylinder 705. The hydraulic pump station 701 is connected to the servo valve 702 circuit, and the servo valve 702 is connected to the PLC 703 circuit. The PLC 703 is connected to the position sensor 704 circuit, and the position sensor 704 is fixedly installed on the piston rod of the servo cylinder 705. The servo cylinder 705 is connected to the hydraulic pump station 701 oil circuit, and the number of the servo cylinders 705 is two, one side of which is fixed to one of the servo cylinders 705. The one side of the block is fixedly connected, and one end of the piston rod of one servo oil cylinder 705 is fixedly connected to one side of the push rod 1 201, one side of the other servo oil cylinder 705 is fixedly connected to one side of the other fixed block, and one end of the piston rod of the other servo oil cylinder 705 is fixedly connected to one side of the push rod 2 301, PLC703 receives the position signal and feedback position signal of the input position sensor 704, and outputs the control signal of the servo valve 702, and controls the piston rod of the servo oil cylinder 705 by controlling the servo valve 702. The servo oil cylinder 705 is connected to the push rod 1 201 and The push rod 2 301 pushes the lower sliding block 1 202 and the lower sliding block 2 302 to slide respectively. The sliding of the lower sliding block 1 202 and the lower sliding block 2 302 drives the main lifting frame 203 and the auxiliary lifting frame 303 to rotate respectively. When the main lifting frame 203 and the auxiliary lifting frame 303 rotate, they drive the upper sliding block 1 204 and the upper sliding block 2 304 to slide respectively, so that the lifting plate 601 rises and falls smoothly. The lifting plate 601 drives the stage plate 602 and the guardrail 603, so that the stage plate 602 rises and falls smoothly, thereby realizing the closed-loop control of the lifting of the stage. The lower sliding block 202 and the lower sliding block 2 302 drive the main lifting frame 203 and the auxiliary lifting frame 303 to rotate respectively. 02 and the lower sliding block 302 slide, respectively, through the main transmission rod 401 and the auxiliary transmission rod 501 to drive the main sliding rod 402 and the auxiliary sliding rod 502, the main sliding rod 402 and the auxiliary sliding rod 502 respectively push the main support frame 102 and the auxiliary support frame 103 to slide upward, the main sliding rod 402 and the auxiliary sliding rod 502 slide up and down and respectively push the main connecting rod 403 and the auxiliary connecting rod 503 to rotate, the main connecting rod 403 and the auxiliary connecting rod 503 respectively drive the main connecting block 405 and the auxiliary connecting block 505 to slide, so that the stage board 602 rises to the same height as the top of the guardrail 603.

[0035] In order to make the explanation clearer, some parameters are illustrated with actual numbers:

[0036] The speed of the stage uniform motion is set to 0.15m / s, the acceleration and deceleration distances are both 0.15m, and the time used for acceleration and deceleration is equal to 0.5π*0.15m / (0.15m / s)≈1.57. , S is the closed-loop real-time control position, S1 is the initial position, S2 is the target position, and t is the time.

[0037] The control formula for the closed-loop control of the stage real-time position S and time t is as follows:

[0038] When t≤1.57 seconds, S=S1+[|S2-S1| / (S2-S1)]*[0.15+0.15*sin(270+90t / 1.57)°]

[0039] When 1.57<t<(|S2-S1|-0.3) / 0.15+1.57, S=S1+[|S2-S1| / (S2-S1)]*[0.15+0.15*(t-1.57)]When (|S2-S1|-0.3) / 0.15+1.57≤t≤(|S2-S1|-0.3) / 0.15+3.14,

[0040] S=S2-[|S2-S1| / (S2-S1)]*0.15+[|S2-S1| / (S2-S1)]*0.15*sin{90[t-1.57-(|S2-S1|-0.3) / 0.15] / 1.57}°

[0041] Assuming the initial position S1 is 0.1m and the target position S2 is 0.6355m, we have the following curve of real-time position S and time t: Figure 1 ,like Figure 6 As shown;

[0042] The curve of real-time position S and time t Figure 1 Generate a curve of acceleration a and time t Figure 2 ,like Figure 7 As shown;

[0043] Assuming the mass of the human body is 70KG, the curve of acceleration a and time t is Figure 2 Generate a curve of acceleration force F and time t Figure 3 ,like Figure 8 As shown;

[0044] On the curve Figure 3 It can be seen that the acceleration force F changes gently and steadily with time t, which makes the stage more comfortable during the switching process between acceleration and deceleration and uniform motion.

[0045] The use method and advantages of the utility model: When the lifting stage with high stability is working, the working process is as follows:

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, PLC703 receives the position signal and feedback position signal of the input position sensor 704, and outputs the control signal of the servo valve 702, and controls the piston rod of the servo cylinder 705 by controlling the servo valve 702. The servo cylinder 705 pushes the lower sliding block 1 202 and the lower sliding block 2 302 to slide respectively through the push rod 1 201 and the push rod 2 301. The sliding of the lower sliding block 1 202 and the lower sliding block 2 302 respectively drives the main lifting frame 203 and the auxiliary lifting frame 303 to rotate. When the main lifting frame 203 and the auxiliary lifting frame 303 rotate, they respectively drive the upper sliding block 1 204 and the upper sliding block 2 304 to slide, so that the lifting plate 601 rises and falls smoothly, and the lifting plate 601 drives the stage plate 602 and Guardrail 603, so that the stage board 602 can rise and fall smoothly, thereby realizing closed-loop control of the lifting of the stage, when the lower sliding block 1 202 and the lower sliding block 2 302 slide, they respectively drive the main sliding rod 402 and the auxiliary sliding rod 502 through the main transmission rod 401 and the auxiliary transmission rod 501, the main sliding rod 402 and the auxiliary sliding rod 502 respectively push the main support frame 102 and the auxiliary support frame 103 to slide upward, the main sliding rod 402 and the auxiliary sliding rod 502 slide up and down and respectively push the main connecting rod 403 and the auxiliary connecting rod 503 to rotate, the main connecting rod 403 and the auxiliary connecting rod 503 respectively drive the main connecting block 405 and the auxiliary connecting block 505 to slide to make the stage board 602 rise to the same height as the top of the guardrail 603.

[0047] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A lifting stage with high stability, comprising a base (1), characterized in that: The inner wall of the base (1) is slidably connected to the outer wall of the main lifting member (2), the outer wall of the main lifting member (2) is rotatably connected to the inner wall of the auxiliary lifting member (3), one side of the main lifting member (2) is fixedly connected to one side of the main transmission member (4), one side of the auxiliary lifting member (3) is fixedly connected to one side of the auxiliary transmission member (5), one side of the main transmission member (4) is fixedly connected to one side of the lifting stage (6), and one side of the base (1) is fixedly connected to one side of the hydraulic system (7); One side of the auxiliary transmission member (5) is fixedly connected to one side of the lifting stage (6); the number of the main transmission member (4) and the number of the auxiliary transmission member (5) are both two; the two main transmission members (4) and the two auxiliary transmission members (5) are mirror-arranged along the transverse central axis of the base (1).

2. A lifting stage with high stability according to claim 1, characterized in that: The base (1) comprises a base (101), a main support frame (102) and an auxiliary support frame (103); the top of one side of the base (101) is fixedly connected to the bottom of the main support frame (102), and the top of the other side of the base (101) is fixedly connected to the bottom of the auxiliary support frame (103); the top of the base (101) is respectively provided with a main sliding groove and an auxiliary sliding groove, and the tops of both sides of the base (101) are provided with fixed blocks; the top of the main support frame (102) is provided with a main support groove, and the top of the auxiliary support frame (103) is provided with an auxiliary support groove; the number of the main support frames (102) and the auxiliary support frames (103) are both two, and the two main support frames (102) and the two auxiliary support frames (103) are mirror-imaged along the central axis of the base (101).

3. A lifting stage with high stability according to claim 2, characterized in that: The main lifting member (2) is composed of a pushing rod (201), a lower sliding block (202), a main lifting frame (203) and an upper sliding block (204); the front side of the pushing rod (201) is fixedly connected to the back side of the lower sliding block (202); the outer wall of the bottom of the lower sliding block (202) is slidably connected to the inner wall of the main sliding groove; the inner wall of the lower sliding block (202) is rotatably connected to the outer wall of one side of the main lifting frame (203); and the outer wall of the other side of the main lifting frame (203) is rotatably connected to the inner wall of the upper sliding block (204).

4. A lifting stage with high stability according to claim 3, characterized in that: The auxiliary lifting member (3) is composed of a second pushing rod (301), a second lower sliding block (302), an auxiliary lifting frame (303) and a second upper sliding block (304). The front side of the second pushing rod (301) is fixedly connected to the back side of the second lower sliding block (302), and the outer wall of the bottom of the second lower sliding block (302) is slidably connected to the inner wall of the auxiliary sliding groove. The inner wall of the second lower sliding block (302) is rotatably connected to the outer wall of one side of the auxiliary lifting frame (303), and the inner wall of the auxiliary lifting frame (303) is provided with a rotating hole, and the inner wall of the rotating hole is The auxiliary lifting frame (303) is rotatably connected to the outer wall of the main lifting frame (203), and the outer wall on the other side of the auxiliary lifting frame (303) is rotatably connected to the inner wall of the upper sliding block 2 (304), the number of the lower sliding block 1 (202), the upper sliding block 1 (204), the lower sliding block 2 (302) and the upper sliding block 2 (304) are all two, and the two lower sliding blocks 1 (202), the two upper sliding blocks 1 (204), the two lower sliding blocks 2 (302) and the two upper sliding blocks 2 (304) are all mirror-arranged along the transverse central axis of the base (101).

5. The lifting stage with high stability according to claim 3, characterized in that: The main transmission member (4) is composed of a main transmission rod (401), a main sliding rod (402), a main connecting rod (403), a main support block (404) and a main connecting block (405). One side of the main transmission rod (401) is fixedly connected to one side of an upper sliding block (204), and a sliding hole (1) is provided on the inner wall of the other side of the main transmission rod (401). The inner wall of the sliding hole (1) is slidably connected to the outer wall of the main sliding rod (402), and the outer wall of the top of the main sliding rod (402) is rotatably connected to the inner wall of the main connecting rod (403). The outer wall of one side of the main connecting rod (403) is rotatably connected to the inner wall of the main support block (404), and the outer wall of the other side of the main connecting rod (403) is rotatably connected to the inner wall of the main connecting block (405), and the outer wall of the bottom of the main sliding rod (402) is slidably abutted against the inner wall of the main support groove.

6. A lifting stage with high stability according to claim 4, characterized in that: The auxiliary transmission member (5) comprises an auxiliary transmission rod (501), an auxiliary sliding rod (502), an auxiliary connecting rod (503), an auxiliary support block (504) and an auxiliary connecting block (505); one side of the auxiliary transmission rod (501) is fixedly connected to one side of the upper sliding block 2 (304); and the inner wall of the other side of the auxiliary transmission rod (501) is provided with a sliding hole 2; the inner wall of the sliding hole 2 is slidably connected to the outer wall of the auxiliary sliding rod (502); and the outer wall of the top of the auxiliary sliding rod (502) is rotatably connected to the inner wall of the auxiliary connecting rod (503); the outer wall of one side of the auxiliary connecting rod (503) is rotatably connected to the inner wall of the auxiliary support block (504); and the outer wall of the other side of the auxiliary connecting rod (503) is rotatably connected to the inner wall of the auxiliary connecting block (505); and the outer wall of the bottom of the auxiliary sliding rod (502) is slidably abutted against the inner wall of the auxiliary support groove.

7. A lifting stage with high stability according to claim 6, characterized in that: The lifting stage (6) is composed of a lifting plate (601), a stage plate (602) and a guardrail (603). The bottoms of both sides of the lifting plate (601) are respectively provided with a main lifting groove and an auxiliary lifting groove, and the inner wall of the main lifting groove is slidably connected to the outer wall of the top of the upper sliding block (204), the inner wall of the auxiliary lifting groove is slidably connected to the outer wall of the top of the upper sliding block (304), and the top of the lifting plate (601) is movably abutted against the bottom of the stage plate (602). One side of the lifting plate (601) is fixedly connected to one side of the main support block (404), and the other side of the lifting plate (601) is fixedly connected to one side of the auxiliary support block (504). The bottoms of both sides of the stage plate (602) are respectively provided with a main connecting groove and an auxiliary connecting groove, and the inner wall of the main connecting groove is slidably connected to the outer wall of the top of the main connecting block (405), and the inner wall of the auxiliary connecting groove is slidably connected to the outer wall of the top of the auxiliary connecting block (505).

8. The lifting stage with high stability according to claim 4, characterized in that: The hydraulic system (7) comprises a hydraulic pump station (701), a servo valve (702), a PLC (703), a position sensor (704) and a servo oil cylinder (705). The hydraulic pump station (701) is connected to the servo valve (702) in an electric circuit, and the servo valve (702) is connected to the PLC (703) in an electric circuit. The PLC (703) is connected to the position sensor (704) in an electric circuit, and the position sensor (704) is fixedly mounted on the piston rod of the servo oil cylinder (705). The servo oil cylinder (705) ) is connected to the oil circuit of the hydraulic pump station (701), and the number of servo cylinders (705) is two, one side of one of the servo cylinders (705) is fixedly connected to one side of one of the fixed blocks, and one end of the piston rod of one of the servo cylinders (705) is fixedly connected to one side of the push rod one (201), one side of the other servo cylinder (705) is fixedly connected to one side of the other fixed block, and one end of the piston rod of the other servo cylinder (705) is fixedly connected to one side of the push rod two (301).

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