Push-pull lifting device

Abstract

The utility model relates to a push-pull lifting device which comprises an in-place detection system, an active framework system, a power source system, a passive framework system and a fixed rack system, the active framework system is arranged between the passive framework system and the fixed rack system, the active framework system is connected with the power source system, and the power source system is connected with the fixed rack system. The in-place detection system is arranged on the passive framework system, conveying equipment is placed above the passive framework system, the active framework system is used for driving the passive framework system to move back and forth along the fixed rack system, and the power source system is used for driving the active framework system to move. The in-place detection system is used for in-place detection of the active architecture system. Compared with the prior art, the push-pull lifting device provided by the utility model can be installed in a lower space, is convenient to disassemble and assemble, has strong practicability, and can be applied to warehouse management, logistics distribution and automatic production lines.

Description

Technical Field

[0001] The utility model relates to the technical field of logistics, in particular to a push-pull lifting device. Background Art

[0002] With the development of automation and intelligent technologies, the demand for efficient and precise cargo handling equipment in the logistics, warehousing, and manufacturing industries is increasing day by day. The mass production of goods is usually achieved through production lines. To improve the utilization rate of equipment installation space in the transportation link of the production line, the conveyor line is often set in a 90° rotation form. The conveyed goods will also run horizontally or vertically. This conversion requires a height difference in the conveyor module and is achieved through the transition of a lifting device. Therefore, when the goods pass through the conveyor modules that are 90° to each other, the conveyor modules need to be lifted and transferred. Thus, the lifting device is generated.

[0003] Traditional lifting devices usually rely on manual operation or simple mechanical equipment. These methods are not only inefficient and error-prone, but also easily lead to waste of labor resources and worker health problems in a repetitive and high-load working environment. Or directly lift using a jacking mechanism such as a cylinder. This form requires a large vertical space, making it difficult to overlap and disassemble the conveyor modules in a lower space. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a push-pull lifting device to solve the defect that the existing lifting device requires a large vertical space. The push-pull lifting device provided by the utility model can be installed in a lower space, is convenient for disassembly and assembly, has strong practicability, and can be used in warehouse management, logistics distribution, and automated production lines.

[0005] The purpose of the utility model can be realized through the following technical solutions:

[0006] A push-pull lifting device includes a position detection system, an active frame system, a power source system, a passive frame system, and a fixed frame system.

[0007] The active frame system is arranged between the passive frame system and the fixed frame system. The active frame system is connected to the power source system. The position detection system is arranged on the passive frame system.

[0008] The upper part of the passive frame system is used to place the conveying equipment. The active frame system is used to drive the passive frame system to move back and forth along the fixed frame system. The power source system is used to drive the active frame system to move. The position detection system is used for position detection of the active frame system.

[0009] In an embodiment of the utility model, the push-pull lifting device further includes a support adjustment system. The support adjustment system is arranged below the fixed frame system.

[0010] The support and adjustment system includes a connecting frame, a ground support plate, a height adjustment screw, a locking nut, and a ground fixing bolt. The fixed frame system is fixed above the ground support plate via the connecting frame, and the ground support plate is fixed to the ground via the ground fixing bolt. The fixed frame system is connected to the connecting frame via the height adjustment screw, and a locking nut is provided on the height adjustment screw.

[0011] As a preferred technical solution, the ground support plate is connected to the aerial steel structure by means of clamping, welding or other methods.

[0012] In one embodiment of this utility model, the fixed frame system includes a fixed structural frame and inclined guide rails. The fixed structural frame is fixed to the support adjustment system above it. Multiple inclined guide rails are provided above the fixed structural frame, and the inclined guide rails are slidably connected to the active frame system.

[0013] In one embodiment of this utility model, the active architecture system includes lifting rollers and an active structural frame. The active structural frame is provided with multiple lifting rollers, which are slidably connected to inclined guide rails. The rear end of the active structural frame is connected to a power source system.

[0014] As a preferred technical solution, the active structural frame is a rigid frame structure.

[0015] The inclined guide rail is made of a material with appropriate hardness, which reduces the wear and tear between the roller and the rail.

[0016] As a preferred technical solution, the lifting rollers are installed at the four corners of the active structural frame to support the main body.

[0017] In one embodiment of this utility model, the active structural frame is connected to the power source system via a power transmission system.

[0018] The power transmission system includes a power transmission rod, a rotating crank, and a connector. One end of the power transmission rod is connected to the active structure frame, and the other end of the power transmission rod is connected to the rotating crank. The end of the rotating crank away from the power transmission rod is connected to the power source system.

[0019] When the equipment is running, the power transmission system transmits the longitudinal force generated by the power source system to the active structural frame, causing the active structural frame to produce longitudinal displacement.

[0020] In one embodiment of this utility model, the power source system is fixed on a fixed structural frame, and the power source system includes a power source and a connector, wherein the power source is connected to a rotating crank through the connector.

[0021] As a preferred technical solution, the power source is a three-in-one motor reducer. The electric power source does not require auxiliary facilities such as air supply, thus reducing the number of potential failure points.

[0022] In one embodiment of this utility model, the passive architecture system includes a passive lifting structure frame, the upper part of which is used for extending and connecting conveying equipment, the lower part of which is slidably connected to a fixed structure frame, and an active structure frame is provided between the passive lifting structure frame and the fixed structure frame;

[0023] The passive lifting structure frame is provided with a lifting roller track below it, and the lifting rollers are slidably connected to the lifting roller track.

[0024] As a preferred technical solution, when the active structural frame moves longitudinally to the high or low end of the inclined guide rail, the passive lifting structural frame is lifted to the corresponding high or low position.

[0025] In one embodiment of this utility model, the push-pull lifting device further includes a lifting guide system, which comprises multiple lifting guide rods and a lifting guide sleeve.

[0026] The lifting guide rod is installed on the passive lifting structure frame, and the lifting guide sleeve is installed on the side end of the fixed structure frame. The lifting guide rod and the lifting guide sleeve are slidably connected.

[0027] As a preferred technical solution, the lifting and guiding system includes four lifting guide rods and four lifting guide sleeves. When the equipment is running, the lifting guide rods and lifting guide sleeves are used to achieve the lateral positioning of the active structural frame and the passive lifting structural frame and the longitudinal positioning of the passive lifting structural frame during lifting.

[0028] In one embodiment of this utility model, the push-pull lifting device further includes a maintenance and protection system, which includes a maintenance and protection pin hole, a protection pin placement bracket, and a protection pin.

[0029] The maintenance and protection pin holes are located on the active structural frame and the passive lifting structural frame.

[0030] The protective pin holder is fixed to the fixed structure frame, and the protective pin is disposed on the protective pin holder.

[0031] The inspection and protection pin hole mates with the protection pin and is used during manual inspection.

[0032] As a preferred technical solution, when the equipment is running, the protective pin is inserted into the protective pin placement frame; when the equipment requires manual maintenance, the protective pin is simultaneously inserted into the maintenance protective pin holes of both the active structural frame and the passive lifting structural frame, so that the active structural frame and the passive lifting structural frame cannot move longitudinally, thus avoiding the occurrence of safety accidents.

[0033] In one embodiment of this utility model, the positioning detection system includes a switch trigger plate, a detection switch, and a slide rail. One switch trigger plate is disposed on the active structural frame, and two detection switches are installed on the slide rail. The slide rail is installed below the passive lifting structural frame. The detection switch is used to adjust the position of the active structural frame longitudinally to facilitate precise positioning during installation.

[0034] As a preferred technical solution, when the active structural frame moves longitudinally to the desired position, the switch trigger board triggers the detection switch, generates a positioning signal, and transmits it to the control system.

[0035] As a preferred technical solution, the slide rail is a C-shaped slide rail.

[0036] In one embodiment of this utility model, the push-pull lifting device further includes a longitudinal limiting system, which comprises longitudinal traveling rollers, transverse positioning rollers, and a longitudinal limiting block.

[0037] The longitudinal traveling roller is mounted on the active structural frame, and is located on the outer side of the supporting roller coaxially.

[0038] The top of the longitudinal limiting block is fixed to the bottom of the passive lifting structure frame, and the bottom of the longitudinal limiting block is provided with a transverse positioning roller.

[0039] The longitudinal traveling roller and the longitudinal limiting block work together to provide longitudinal limiting.

[0040] The longitudinal limiting block is used to provide over-extension protection when the active structural frame moves longitudinally.

[0041] The lateral positioning rollers are used to limit the lateral displacement of the active structural frame during longitudinal movement.

[0042] As a preferred technical solution, the active structural frame can move longitudinally, while the passive lifting structural frame has no longitudinal displacement. When the active structural frame moves longitudinally to its limit position, the longitudinal traveling roller is blocked by the longitudinal limiting block to prevent the lifting roller from falling off the inclined guide rail and causing an accident.

[0043] As a preferred technical solution, the longitudinal limiting system includes four longitudinal traveling rollers, four lateral positioning rollers, and four longitudinal limiting blocks.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] This utility model provides a push-pull lifting device, comprising a support adjustment system, a longitudinal limiting system, a positioning detection system, an active frame system, a maintenance protection system, a lifting guide system, a power transmission system, a power source system, a passive frame system, and a fixed frame system. The support adjustment system is used for vertical height and horizontal adjustment; the longitudinal limiting system provides limit protection for the longitudinal movement of the active frame system; the positioning detection system detects the position of the active frame system during longitudinal movement and transmits signals to the control system; the active frame system is a rigid body and executes the push-pull commands; the maintenance protection system provides installation protection for maintenance personnel during device maintenance; the lifting guide system provides lifting guidance for the lifting body and also has horizontal and vertical positioning functions for the lifting body; the power transmission system transmits power to the active frame system; the power source system provides power to the device, ensuring the realization of the device's functions; the passive frame system is the passive lifting body, on which a conveyor body can be extended and installed; the fixed frame system provides overall rigid support for the device, ensuring the strength and stability of the device. This utility model provides a push-pull lifting device for conveyor modules with height difference requirements.

[0046] To address the issue of traditional lifting modes being unusable due to vertical space limitations in the installation environment, this invention separates the lifting power source and the lifting body in the vertical direction, reducing the design complexity caused by overlapping components and significantly reducing the installation space required for the equipment. It features convenient installation and high disassembly efficiency. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the push-pull lifting device in this utility model;

[0048] Figure 2 This is a schematic diagram of the positioning detection system in this utility model;

[0049] Figure 3 This is a schematic diagram of the active architecture system in this utility model;

[0050] Figure 4 This is a schematic diagram of the maintenance and protection system in this utility model;

[0051] Figure 5 This is a schematic diagram of the passive architecture system in this utility model;

[0052] Figure 6 This is a structural schematic diagram of the fixed frame system of this utility model.

[0053] Explanation of the attached drawing numbers: 101. Support and adjustment system; 102. Longitudinal limiting system; 103. Position detection system; 1031. Detection switch; 1032. Slide rail; 104. Active frame system; 1041. Lifting roller; 1042. Longitudinal traveling roller; 1043. Active frame structure; 105. Maintenance and protection system; 1051. Protective pin placement rack; 1052. Protective pin; 106. Lifting and guiding system; 107. Power transmission system; 108. Power source system; 109. Passive frame system; 1091. Passive lifting frame structure; 1092. Lifting guide rod; 1093. Lateral positioning roller; 1094. Longitudinal limiting block; 110. Fixed frame system; 1101. Lifting guide sleeve; 1102. Fixed frame structure; 1103. Inclined guide rail. Detailed Implementation

[0054] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0055] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0056] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0057] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0058] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0059] Example 1

[0060] See Figures 1 to 6 This embodiment provides a push-pull lifting device, including a positioning detection system 103, an active frame system 104, a power source system 108, a passive frame system 109, and a fixed frame system 110.

[0061] The active architecture system 104 is located between the passive architecture system 109 and the fixed rack system 110. The active architecture system 104 is connected to the power source system 108. The positioning detection system 103 is located on the passive architecture system 109.

[0062] The passive architecture system 109 is used to place conveying equipment on top, the active architecture system 104 is used to drive the passive architecture system 109 to move back and forth along the fixed frame system 110, the power source system 108 is used to drive the active architecture system 104 to move, and the position detection system 103 is used to detect the position of the active architecture system 104.

[0063] In this embodiment, the push-pull lifting device further includes a support adjustment system 101, which is located below the fixed frame system 110.

[0064] The support adjustment system 101 includes a connecting frame, a ground support plate, a height adjustment screw, a locking nut, and a ground fixing bolt. The fixed frame system 110 is fixed above the ground support plate by the connecting frame. The ground support plate is fixed to the ground by the ground fixing bolt. The fixed frame system 110 is connected to the connecting frame by the height adjustment screw, and the height adjustment screw is provided with a locking nut.

[0065] In this embodiment, the fixed frame system 110 includes a fixed structural frame 1102 and inclined guide rails 1103. The fixed structural frame 1102 is fixed above the support adjustment system 101. Multiple inclined guide rails 1103 are provided above the fixed structural frame 1102. The inclined guide rails 1103 are slidably connected to the active frame system 104.

[0066] In this embodiment, the active architecture system 104 includes lifting rollers 1041 and an active structural frame 1043. The active structural frame 1043 is provided with a plurality of lifting rollers 1041. The lifting rollers 1041 are slidably connected to the inclined guide rail 1103. The rear end of the active structural frame 1043 is connected to the power source system 108.

[0067] In this embodiment, the active structural frame 1043 is a rigid frame structure.

[0068] The inclined guide rail 1103 is made of a material with corresponding hardness, which reduces the wear between the roller and the rail.

[0069] In this embodiment, the lifting rollers 1041 are installed at the four corners of the active structure frame 1043 to support the main body.

[0070] In this embodiment, the active structural frame 1043 is connected to the power source system 108 via the power transmission system 107.

[0071] The power transmission system 107 includes a power transmission rod, a rotating crank, and a connector. One end of the power transmission rod is connected to the active structure frame 1043, and the other end of the power transmission rod is connected to the rotating crank. The end of the rotating crank away from the power transmission rod is connected to the power source system 108.

[0072] When the equipment is running, the power transmission system 107 transmits the longitudinal force generated by the power source system 108 to the active structural frame 1043, causing the active structural frame 1043 to generate longitudinal displacement.

[0073] In this embodiment, the power source system 108 is fixed to the fixed structure frame 1102.

[0074] The power source system 108 includes a power source and a connector, wherein the power source is connected to a rotating crank via the connector.

[0075] In this embodiment, the power source is a three-in-one motor reducer. The electric power source does not require auxiliary facilities such as air supply, thus reducing the possibility of failure.

[0076] In this embodiment, the passive architecture system 109 includes a passive lifting structure frame 1091. The upper part of the passive lifting structure frame 1091 is used for extending and connecting conveying equipment. The lower part of the passive lifting structure frame 1091 is slidably connected to a fixed structure frame 1102. An active structure frame 1043 is provided between the passive lifting structure frame 1091 and the fixed structure frame 1102.

[0077] The passive lifting structure frame 1091 is provided with a lifting roller track below it, and the lifting roller 1041 is slidably connected to the lifting roller track.

[0078] In this embodiment, when the active structural frame 1043 moves longitudinally to the high end or low end of the inclined guide rail 1103, the passive lifting structural frame 1091 is lifted to the corresponding high or low position.

[0079] In this embodiment, the push-pull lifting device further includes a lifting guide system 106, which includes a plurality of lifting guide rods 1092 and a lifting guide sleeve 1101.

[0080] The lifting guide rod 1092 is installed on the passive lifting structure frame 1091, and the lifting guide sleeve 1101 is installed on the side of the fixed structure frame 1102. The lifting guide rod 1092 and the lifting guide sleeve 1101 are slidably connected.

[0081] In this embodiment, the lifting guide system 106 includes four lifting guide rods 1092 and four lifting guide sleeves 1101. When the equipment is running, the lifting guide rods 1092 and the lifting guide sleeves 1101 are used to achieve the lateral positioning of the active structural frame 1043 and the passive lifting structural frame 1091 and the longitudinal positioning of the passive lifting structural frame 1091 during lifting.

[0082] In this embodiment, the push-pull lifting device further includes a maintenance and protection system 105, which includes a maintenance and protection pin hole, a protection pin placement bracket 1051, and a protection pin 1052.

[0083] The maintenance and protection pin holes are located on the active structural frame 1043 and the passive lifting structural frame 1091.

[0084] The protective pin holder 1051 is fixed to the fixed structure frame 1102, and the protective pin 1052 is disposed on the protective pin holder 1051.

[0085] The inspection and protection pin hole mates with the protection pin 1052 and is used during manual inspection.

[0086] In this embodiment, when the equipment is running, the protective pin 1052 is inserted into the protective pin placement bracket 1051; when the equipment requires manual maintenance, the protective pin 1052 is simultaneously inserted into the maintenance protective pin holes of the active structural frame 1043 and the passive lifting structural frame 1091, so that the active structural frame 1043 and the passive lifting structural frame 1091 cannot move longitudinally, thus avoiding the occurrence of safety accidents.

[0087] In this embodiment, the positioning detection system 103 includes a switch trigger plate, a detection switch 1031, and a slide rail 1032. One switch trigger plate is disposed on the active structural frame 1043, and two detection switches 1031 are mounted on the slide rail 1032. The slide rail 1032 is mounted below the passive lifting structural frame 1091. The detection switch 1031 is used to adjust the position of the active structural frame 1043 longitudinally to facilitate precise positioning during installation.

[0088] In this embodiment, when the active structure frame 1043 moves longitudinally to the desired position, the switch trigger board triggers the detection switch 1031, generating a positioning signal and transmitting it to the control system.

[0089] In this embodiment, the slide rail 1032 is a C-shaped slide rail.

[0090] In this embodiment, the push-pull lifting device further includes a longitudinal limiting system 102, which includes a longitudinal traveling roller 1042, a transverse positioning roller 1093, and a longitudinal limiting block 1094.

[0091] The longitudinal traveling roller 1042 is mounted on the active structural frame 1043, and the longitudinal traveling roller 1042 is located on the outer side coaxial with the lifting roller 1041.

[0092] The top of the longitudinal limiting block 1094 is fixed below the passive lifting structure frame 1091, and the bottom of the longitudinal limiting block 1094 is provided with a transverse positioning roller 1093.

[0093] The longitudinal traveling roller 1042 and the longitudinal limiting block 1094 work together to provide longitudinal limiting.

[0094] The longitudinal limiting block 1094 is used to provide over-extension protection when the active structural frame 1043 moves longitudinally, and the transverse positioning roller 1093 is used to limit the transverse displacement of the active structural frame 1043 when it moves longitudinally.

[0095] In this embodiment, the active structural frame 1043 can move longitudinally, while the passive lifting structural frame 1091 has no longitudinal displacement. When the active structural frame 1043 moves longitudinally to its limit position, the longitudinal traveling roller 1042 is blocked by the longitudinal limiting block 1094 to prevent the lifting roller 1041 from falling off the inclined guide rail 1103 and causing an accident.

[0096] In this embodiment, the longitudinal limiting system 102 includes four longitudinal traveling rollers 1042, four lateral positioning rollers 1093, and four longitudinal limiting blocks 1094.

[0097] Example 2

[0098] This embodiment provides a push-pull lifting device, which is the same as embodiment 1 except that the ground support plate is connected to the aerial steel structure by means of clamps, welding or other methods.

[0099] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A push-pull lifting device, characterized in that, It includes a position detection system (103), an active architecture system (104), a power source system (108), a passive architecture system (109), and a fixed rack system (110). The active architecture system (104) is located between the passive architecture system (109) and the fixed rack system (110). The active architecture system (104) is connected to the power source system (108). The position detection system (103) is located on the passive architecture system (109). The passive architecture system (109) is used to place the conveying equipment on top, the active architecture system (104) is used to drive the passive architecture system (109) to move back and forth along the fixed frame system (110), the power source system (108) is used to drive the active architecture system (104) to move, and the position detection system (103) is used to detect the position of the active architecture system (104).

2. The push-pull lifting device according to claim 1, characterized in that, The push-pull lifting device also includes a support adjustment system (101), which is located below the fixed frame system (110). The support adjustment system (101) includes a connecting frame, a ground support plate, a height adjustment screw, a locking nut, and a ground fixing bolt. The fixed frame system (110) is fixed above the ground support plate by the connecting frame. The ground support plate is fixed to the ground by the ground fixing bolt. The fixed frame system (110) is connected to the connecting frame by the height adjustment screw, and the height adjustment screw is provided with a locking nut.

3. The push-pull lifting device according to claim 1, characterized in that, The fixed frame system (110) includes a fixed structural frame (1102) and inclined guide rails (1103). The fixed structural frame (1102) is fixed above the support adjustment system (101) and multiple inclined guide rails (1103) are provided above the fixed structural frame (1102). The inclined guide rails (1103) are slidably connected to the active frame system (104).

4. A push-pull lifting device according to claim 3, characterized in that, The active architecture system (104) includes lifting rollers (1041) and an active structure frame (1043). The active structure frame (1043) is provided with multiple lifting rollers (1041). The lifting rollers (1041) are slidably connected to the inclined guide rail (1103). The rear end of the active structure frame (1043) is connected to the power source system (108).

5. A push-pull lifting device according to claim 4, characterized in that, The active structural frame (1043) is connected to the power source system (108) through the power transmission system (107). The power transmission system (107) includes a power transmission rod, a rotating crank and a connector. One end of the power transmission rod is connected to the active structure frame (1043), and the other end of the power transmission rod is connected to the rotating crank. The end of the rotating crank away from the power transmission rod is connected to the power source system (108). The power source system (108) is fixed on the fixed structure frame (1102). The power source system (108) includes a power source and a connector. The power source is connected to the rotating crank through the connector.

6. A push-pull lifting device according to claim 4, characterized in that, The passive architecture system (109) includes a passive lifting structure frame (1091), the upper part of which is used to extend and connect the conveying equipment, the lower part of which is slidably connected to the fixed structure frame (1102), and an active structure frame (1043) is provided between the passive lifting structure frame (1091) and the fixed structure frame (1102). The passive lifting structure frame (1091) is provided with a lifting roller track below it, and the lifting roller (1041) is slidably connected to the lifting roller track.

7. A push-pull lifting device according to claim 6, characterized in that, The push-pull lifting device also includes a lifting guide system (106), which includes multiple lifting guide rods (1092) and a lifting guide sleeve (1101). The lifting guide rod (1092) is installed on the passive lifting structure frame (1091), and the lifting guide sleeve (1101) is installed on the side of the fixed structure frame (1102). The lifting guide rod (1092) and the lifting guide sleeve (1101) are slidably connected.

8. A push-pull lifting device according to claim 6, characterized in that, The push-pull lifting device also includes a maintenance protection system (105), which includes a maintenance protection pin hole, a protection pin placement bracket (1051), and a protection pin (1052). The maintenance and protection pin holes are located on the active structural frame (1043) and the passive lifting structural frame (1091). The protective pin placement rack (1051) is fixed on the fixed structure frame (1102), and the protective pin (1052) is located on the protective pin placement rack (1051).

9. A push-pull lifting device according to claim 6, characterized in that, The positioning detection system (103) includes a switch trigger plate, a detection switch (1031), and a slide rail (1032). One of the switch trigger plates is located on the active structure frame (1043), and two of the detection switches (1031) are installed on the slide rail (1032). The slide rail (1032) is installed below the passive lifting structure frame (1091). The detection switch (1031) is used to adjust the position of the active structure frame (1043) longitudinally.

10. A push-pull lifting device according to claim 6, characterized in that, The push-pull lifting device also includes a longitudinal limiting system (102), which includes longitudinal traveling rollers (1042), lateral positioning rollers (1093), and longitudinal limiting blocks (1094). The longitudinal traveling roller (1042) is mounted on the active structural frame (1043), and the longitudinal traveling roller (1042) is located on the outer side of the lifting roller (1041) coaxially. The top of the longitudinal limiting block (1094) is fixed below the passive lifting structure frame (1091), and the bottom of the longitudinal limiting block (1094) is provided with a transverse positioning roller (1093). The longitudinal traveling roller (1042) and the longitudinal limiting block (1094) work together to provide longitudinal limiting. The longitudinal limiting block (1094) is used to provide over-extension protection when the active structural frame (1043) moves longitudinally. The lateral positioning roller (1093) is used to limit the lateral displacement of the active structural frame (1043) during longitudinal movement.

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