A crane column and a crane

Abstract

The utility model discloses a kind of lifting machine stand column and lifting machine, including support column body and reinforcing member;Support column body includes the first side and second side being symmetrically arranged along symmetry plane;First side is hook structure, including the first support plate, first connecting plate and first limiting plate sequentially fixedly connected in width direction;First connecting plate one end is perpendicular to first support plate setting, the other end is perpendicular to first limiting plate setting;Second side is hook structure, including the second support plate, second connecting plate and second limiting plate sequentially fixedly connected in width direction;Second connecting plate one end is perpendicular to second support plate setting, the other end is perpendicular to second limiting plate setting;First support plate is perpendicular to second support plate setting;Reinforcing member is rectangular tubular structure, and is fixed in the connecting place of first support plate and second support plate.The utility model can guarantee lifting machine under the premise of having same carrying capacity, with smaller weight, effectively reduce production cost.

Description

Technical Field

[0001] This utility model relates to the field of automotive maintenance technology, and in particular to a lift column and a lift. Background Technology

[0002] A car lift is a specialized piece of equipment used to vertically or tilt a vehicle to a specific height so that operators can perform repair, maintenance, assembly, cleaning, or moving operations. It is widely used in automotive repair settings. With its stable support and flexible operation, a car lift significantly improves work efficiency and ensures operator safety, making it an indispensable key piece of equipment in modern industry and the automotive aftermarket.

[0003] The lift column is the core support frame of the lift. It is a key load-bearing component that connects the base and the lifting mechanism and bears the weight of heavy objects. It mainly undertakes the functions of vertical load transmission and structural stability, and directly affects the lift's load-bearing capacity, lifting safety and operational flexibility.

[0004] To ensure that the lift has sufficient load-bearing capacity, its strength and rigidity are generally improved by increasing the wall thickness of the lift column. This will undoubtedly increase the weight of the lift, which will significantly increase production costs.

[0005] Therefore, it is necessary to provide a new technical solution to solve the above problems. Summary of the Invention

[0006] To address the aforementioned technical problems, this application provides a lift column and a lift that can ensure the lift has a smaller weight while maintaining the same load-bearing capacity, effectively reducing production costs.

[0007] A lifting platform column includes: a support column body and a reinforcing member; The supporting column includes a first side and a second side arranged symmetrically along a symmetrical plane. The first side portion includes a first support plate, a first connecting plate, and a first limiting plate that are fixedly connected in sequence in the width direction; the first support plate, the first connecting plate, and the first limiting plate have the same length; the width of the first support plate is greater than that of the first connecting plate, and the width of the first connecting plate is greater than that of the first limiting plate; The first limiting plate is arranged parallel to the first supporting plate, and the first connecting plate is disposed between the first supporting plate and the first limiting plate; one end of the first connecting plate is perpendicular to the first supporting plate, and the other end is perpendicular to the first limiting plate. The second side portion includes a second support plate, a second connecting plate, and a second limiting plate that are fixedly connected in sequence in the width direction; the second support plate is perpendicular to the first support plate; the second support plate, the second connecting plate, and the second limiting plate have the same length; the width of the second support plate is greater than that of the second connecting plate, and the width of the second connecting plate is greater than that of the second limiting plate; The second limiting plate is arranged parallel to the second supporting plate, and the second connecting plate is disposed between the second supporting plate and the second limiting plate; one end of the second connecting plate is perpendicular to the second supporting plate, and the other end is perpendicular to the second limiting plate; The reinforcing member is a rectangular tubular structure, and is disposed at the connection between the first support plate and the second support plate. The first side of the reinforcing member is fixedly connected to the first support plate, and the second side of the reinforcing member is fixedly connected to the second support plate. The sum of the widths of the reinforcing member and the first limiting plate on the opposite side of the first support plate is less than the width of the first support plate. The sum of the widths of the reinforcing member and the second limiting plate on the opposite side of the second support plate is less than the width of the second support plate.

[0008] Preferably, the first limiting plate and the second limiting plate are arranged symmetrically along the symmetrical plane, the first connecting plate and the second connecting plate are arranged symmetrically along the symmetrical plane, and the first limiting plate and the second limiting plate are arranged symmetrically along the symmetrical plane.

[0009] Preferably, the first support plate and the second support plate are an integral structure formed by bending process.

[0010] Preferably, both the first side and the second side are integral structures formed by bending processes.

[0011] Preferably, the first connecting plate is formed by welding the first support plate and / or the first limiting plate. The second connecting plate is formed by welding the second support plate and / or the second limiting plate.

[0012] According to another aspect of this application, a lifting machine is also provided, including the lifting machine column and base, movable seat, connecting seat, support arm, limiting seat, crossbeam, hydraulic drive device and lifting device. The bottom end of the lifting column is fixedly connected to the base; The movable seat is slidably disposed within the receiving cavity formed by the first limiting plate and its extension line and the second limiting plate and its extension line; the movable seat includes a limiting cavity that extends vertically through itself; The limiting seat is fixedly connected to the base; the limiting seat is disposed in the limiting cavity, and the outer wall of the movable seat is tightly fitted with the inner wall of the movable seat; The connecting seat is fixedly connected to the movable seat; the support arm is rotatably connected to the connecting seat; The lifting device is configured to drive the movable seat to move along its preset track by power provided by the hydraulic drive device.

[0013] Preferably, it further includes a first limiting block and a second limiting block for limiting the movable seat; The first limiting block is fixedly disposed within the first mounting cavity enclosed by the first support plate, the first connecting plate, the first limiting plate and its extension line and the reinforcing member; the first limiting block is at least partially in close contact with the outer wall of the movable seat; The second limiting block is fixedly disposed within the second mounting cavity enclosed by the second support plate, the second connecting plate, the second limiting plate and its extension line and the reinforcing member; the second limiting block is at least partially in close contact with the outer wall of the movable seat.

[0014] Preferably, the first limiting block includes a first sliding plate groove that extends vertically through itself; the second limiting block includes a second sliding plate groove that extends vertically through itself; The outer wall of the movable seat is fixedly provided with a first limiting slide plate and a second limiting slide plate; the first limiting slide plate is slidably disposed in the first slide plate groove and is tightly fitted with the inner wall of the first slide plate groove; the second limiting slide plate is slidably disposed in the second slide plate groove and is tightly fitted with the inner wall of the second slide plate groove.

[0015] Preferably, the lifting device includes a lifting hydraulic cylinder, a lifting chain, a lifting wheel, and a fixed base; the fixed base is fixedly disposed at the end of the moving end of the lifting hydraulic cylinder; the lifting wheel is rotatably connected to the fixed base; the lifting chain meshes with the upper part of the lifting wheel; one end of the lifting chain is fixedly connected to the moving base, and the other end is fixedly connected to the lift column or the base.

[0016] Compared with the prior art, this application has at least the following beneficial effects: 1. This utility model can ensure that the lifting machine has a smaller weight while having the same load-bearing capacity, thus effectively reducing production costs.

[0017] 2. In this utility model, the first support plate, the first connecting plate, and the first limiting plate in the lifting column form a hook-shaped structure, and the second support plate, the second connecting plate, and the second limiting plate form a hook-shaped structure. The first support plate and the second support plate form a right-angle structure. This arrangement can improve the structural strength of the lifting column, ensure that the lifting machine has sufficient load-bearing capacity, and effectively reduce the overall weight and production costs.

[0018] 3. In this utility model, the first support plate, the first connecting plate, the first limiting plate and their extensions and the reinforcing member in the lifting column form a first mounting cavity, and the second support plate, the second connecting plate, the second limiting plate and their extensions and the reinforcing member form a second mounting cavity. The first mounting cavity and the second mounting cavity can create an installation space for the lifting limit block, thereby improving the external limiting capability of the moving seat of the lifting machine.

[0019] 4. The receiving cavity formed by the first limiting plate and its extension line and the second limiting plate and its extension line in the lifting column of this utility model can provide installation space for the moving seat of the lifting machine. At the same time, due to the presence of the first limiting plate and the second limiting plate, the moving seat can be limited, thus constructing the moving track of the moving seat.

[0020] 5. The lifting column structure of this utility model is simple, easy to process, and easy to realize industrial production. Attached Figure Description

[0021] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the lifting column of this utility model; Figure 2 This is a schematic cross-sectional view of the lifting column of this utility model; Figure 3 This is a three-dimensional structural diagram of the lifting machine of this utility model; Figure 4 This is a top view of the lifting mechanism of this utility model; Figure 5 for Figure 4 A magnified view of a portion of position A in the middle; Figure 6 This is a three-dimensional structural diagram of the lifting machine after omitting the limiting seat and crossbeam in the utility model.

[0022] The above figures include the following reference numerals: 1. Lifting column; 2. Hydraulic drive unit; 3. Base; 4. Movable seat; 5. Connecting seat; 6. Support arm; 7. Limiting seat; 8. Crossbeam; 9. Pin shaft; 10. Pallet; 11. Lifting hydraulic cylinder; 12. Lifting chain; 13. Lifting wheel; 14. Fixed seat; 15. First limiting block; 16. Second limiting block; 17. First limiting slide plate; 18. Second limiting slide plate; 100. Support column; 101. First support plate; 102. Second support plate; 103. First connecting plate; 104. Second connecting plate; 105. First limiting plate; 106. Second limiting plate; 200. Reinforcing member; 300. First mounting cavity; 400. Second mounting cavity; 500. Receiving cavity. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Example

[0024] like Figure 1 and Figure 2 As shown, a lifting column includes: a support column 100 and a reinforcing member 200.

[0025] The support column 100 includes a first side and a second side arranged symmetrically along a plane of symmetry.

[0026] Specifically, the first side includes a first support plate 101, a first connecting plate 103, and a first limiting plate 105 that are fixedly connected in sequence in the width direction. The first support plate 101, the first connecting plate 103, and the first limiting plate 105 have the same length. The width of the first support plate 101 is greater than that of the first connecting plate 103, and the width of the first connecting plate 103 is greater than that of the first limiting plate 105.

[0027] The first limiting plate 105 is arranged parallel to the first support plate 101. The first connecting plate 103 is arranged between the first support plate 101 and the first limiting plate 105. One end of the first connecting plate 103 is arranged perpendicular to the first support plate 101, and the other end is arranged perpendicular to the first limiting plate 105.

[0028] The second side includes a second support plate 102, a second connecting plate 104, and a second limiting plate 106 that are fixedly connected in sequence in the width direction. The second support plate 102 is perpendicular to the first support plate 101. The second support plate 102, the second connecting plate 104, and the second limiting plate 106 have the same length. The width of the second support plate 102 is greater than that of the second connecting plate 104, and the width of the second connecting plate 104 is greater than that of the second limiting plate 106.

[0029] The second limiting plate 106 is arranged parallel to the second support plate 102, and the second connecting plate 104 is arranged between the second support plate 102 and the second limiting plate 106; one end of the second connecting plate 104 is arranged perpendicular to the second support plate 102, and the other end is arranged perpendicular to the second limiting plate 106.

[0030] The reinforcing member 200 is a rectangular tubular structure, disposed at the connection between the first support plate 101 and the second support plate 102. The first side of the reinforcing member 200 is fixedly connected to the first support plate 101, and its second side is fixedly connected to the second support plate 102. The sum of the widths of the reinforcing member 200 and the first limiting plate 105 on the opposite side of the first support plate 101 is less than the width of the first support plate 101; the sum of the widths of the reinforcing member 200 and the second limiting plate 106 on the opposite side of the second support plate 102 is less than the width of the second support plate 102.

[0031] Furthermore, the first limiting plate 105 and the second limiting plate 106 are symmetrically arranged along the symmetrical plane, the first connecting plate 103 and the second connecting plate 104 are symmetrically arranged along the symmetrical plane, and the first limiting plate 105 and the second limiting plate 106 are symmetrically arranged along the symmetrical plane.

[0032] It should be noted that the plane of symmetry in this embodiment is a vertical plane, and this vertical plane is actually the center plane of the width direction of the lift, that is, the connecting surface between the two lift columns, which is perpendicular to the direction of the car's entry and exit.

[0033] The receiving cavity 500, which is composed of the first limiting plate 105 and its extension line and the second limiting plate 106 and its extension line, can provide installation space for the movable seat of the lift. At the same time, due to the presence of the first limiting plate 105 and the second limiting plate 106, the movable seat can be limited, thus constructing the moving track of the movable seat.

[0034] The first support plate 101, the first connecting plate 103, the first limiting plate 105 and their extensions, together with the reinforcing member 200, enclose the first mounting cavity 300. The second support plate 102, the second connecting plate 104, the second limiting plate 106 and their extensions, together with the reinforcing member 200, enclose the second mounting cavity 400. The first mounting cavity 300 and the second mounting cavity 400 can create an installation space for the lifting machine limiting block, thereby improving the external limiting capability of the lifting machine's moving seat.

[0035] Furthermore, since the first support plate 101, the first connecting plate 103, and the first limiting plate 105 form a hook-shaped structure, and the second support plate 102, the second connecting plate 104, and the second limiting plate 106 form a hook-shaped structure, and the first support plate 101 and the second support plate 102 form a right-angle structure, this arrangement can improve the structural strength of the lift column, ensure that the lift has sufficient load-bearing capacity, and effectively reduce the overall weight and production costs.

[0036] In this embodiment, the first support plate 101 and the second support plate 102 are an integral structure processed by bending.

[0037] Furthermore, both the first and second side portions are integral structures formed by bending. That is to say, the first limiting plate 105, the first connecting plate 103, the first supporting plate 101, the second supporting plate 102, the second connecting plate 104, and the second limiting plate 106 are formed from a single sheet of steel by bending.

[0038] It should be noted that, provided the lift column has sufficient strength and rigidity, the first support plate 101 and the second support plate 102, spliced ​​by welding, can also meet the requirements, solve the corresponding technical problems, and achieve the same technical effect. However, the first support plate 101 and the second support plate 102 spliced ​​by welding have weld seams at the splice joint, which affects the overall aesthetics, and the protruding weld seams can affect the installation of some components of the lift.

[0039] In some other embodiments of this utility model, the first connecting plate 103 is formed by welding the first support plate 101 or the first limiting plate 105; the second connecting plate 104 is formed by welding the second support plate 102 or the second limiting plate 106.

[0040] In other words, the first and second sides can be manufactured using a process of partial welding and partial bending. This arrangement can improve processing efficiency and reduce the difficulty of material cutting and bending.

[0041] In addition, the first and second sides can also be manufactured entirely by welding. That is, the first connecting plate 103 is manufactured by welding the first support plate 101 and the first limiting plate 105, and the second connecting plate 104 is manufactured by welding the second support plate 102 and the second limiting plate 106. This arrangement can reduce material costs, as it eliminates the need for large steel plates and can be assembled from multiple small plates, further reducing production costs. Example

[0042] Based on the same inventive concept, this embodiment provides a lifting machine, including the lifting machine column 1, base 3, movable seat 4, connecting seat 5, support arm 6, limiting seat 7, crossbeam 8, hydraulic drive device 2, and lifting device as in embodiment 1.

[0043] The bottom end of the lifting column 1 is fixedly connected to the base 3. The movable seat 4 is slidably disposed within the receiving cavity 500 formed by the first limiting plate 105 and its extension line and the second limiting plate 106 and its extension line. The movable seat 4 includes a limiting cavity that extends vertically through itself. The limiting seat 7 is fixedly connected to the base 3 and is disposed within the limiting cavity. The outer wall of the movable seat 4 is tightly fitted with the inner wall of the movable seat 4. The connecting seat 5 is fixedly connected to the movable seat 4. There are two support arms 6, both of which are rotatably connected to the connecting seat 5 via pins 9. The lifting device is configured to drive the movable seat 4 to move along its preset track by power provided by the hydraulic drive device 2. The limiting seat 7 has a cavity that extends through itself to accommodate the lifting device.

[0044] Furthermore, a tray 10 for supporting the vehicle body is provided on the upper part of the end of the support arm 6 away from the movable seat 4.

[0045] Furthermore, the lift also includes a first limiting block 15 and a second limiting block 16 for limiting the movable seat 4. The first limiting block 15 is fixedly disposed within a first mounting cavity 300 enclosed by the first support plate 101, the first connecting plate 103, the first limiting plate 105 and their extensions, and the reinforcing member 200, and the first limiting block 15 is at least partially in close contact with the outer wall of the movable seat 4. The second limiting block 16 is fixedly disposed within a second mounting cavity 400 enclosed by the second support plate 102, the second connecting plate 104, the second limiting plate 106 and their extensions, and the reinforcing member 200, and the second limiting block 16 is at least partially in close contact with the outer wall of the movable seat 4.

[0046] The outer wall of the movable seat 4 is fixedly provided with a first limiting slide plate 17 and a second limiting slide plate 18. The first limiting block 15 includes a first slide plate groove that extends vertically through itself, and the second limiting block 16 includes a second slide plate groove that extends vertically through itself. The size and position of the first slide plate groove are adapted to the first limiting slide plate 17, and the size and position of the second slide plate groove are adapted to the second limiting slide plate 18. The first limiting slide plate 17 is slidably disposed in the first slide plate groove and is tightly fitted with the inner wall of the first slide plate groove. The second limiting slide plate 18 is slidably disposed in the second slide plate groove and is tightly fitted with the inner wall of the second slide plate groove. Relying on the limiting connection between the first limiting slide plate 17 and the first slide plate groove, and the limiting connection between the second limiting slide plate 18 and the second slide plate groove, the stability of the movable seat 4 during movement can be further improved.

[0047] In this embodiment, the lifting device is located within the cavity of the limiting seat 7 and includes a lifting hydraulic cylinder 11, a lifting chain 12, a lifting wheel 13, and a fixed seat 14. The bottom of the lifting hydraulic cylinder 11 is fixedly connected to the base 3, and the fixed seat 14 is fixedly mounted on the end of the moving end of the lifting hydraulic cylinder 11, enabling it to move synchronously with the moving end of the lifting hydraulic cylinder 11. The lifting wheel 13 is rotatably connected to the fixed seat 14, and the lifting chain 12 meshes with the upper part of the lifting wheel 13. One end of the lifting chain 12 is fixedly connected to the moving seat 4, and the other end is fixedly connected to the lift column 1 or the base 3. When the moving end of the lifting hydraulic cylinder 11 moves up and down, it can drive the lifting chain 12 to move through the lifting wheel 13, thereby driving the moving seat 4 and the support arm 6 to move up and down synchronously, thus achieving vehicle lifting.

[0048] It should be noted that, in order to ensure that one end of the lifting chain 12, which is fixedly connected to the movable seat 4, is not obstructed during movement, a chain groove is provided on the limiting seat 7 near that side, which is completely connected to the cavity of the limiting seat 7.

[0049] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0050] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0051] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0052] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lifting platform column, characterized in that, include: Support column (100) and reinforcing member (200); The supporting column (100) includes a first side and a second side symmetrically arranged along a symmetrical plane; The first side portion includes a first support plate (101), a first connecting plate (103), and a first limiting plate (105) that are fixedly connected in sequence in the width direction; the first support plate (101), the first connecting plate (103), and the first limiting plate (105) have the same length; the width of the first support plate (101) is greater than that of the first connecting plate (103), and the width of the first connecting plate (103) is greater than that of the first limiting plate (105). The first limiting plate (105) is arranged parallel to the first supporting plate (101), and the first connecting plate (103) is arranged between the first supporting plate (101) and the first limiting plate (105); one end of the first connecting plate (103) is arranged perpendicular to the first supporting plate (101), and the other end is arranged perpendicular to the first limiting plate (105); The second side portion includes a second support plate (102), a second connecting plate (104), and a second limiting plate (106) that are fixedly connected in sequence in the width direction; the second support plate (102) is perpendicular to the first support plate (101); the second support plate (102), the second connecting plate (104), and the second limiting plate (106) have the same length; the width of the second support plate (102) is greater than that of the second connecting plate (104), and the width of the second connecting plate (104) is greater than that of the second limiting plate (106); The second limiting plate (106) is arranged parallel to the second support plate (102), and the second connecting plate (104) is arranged between the second support plate (102) and the second limiting plate (106); one end of the second connecting plate (104) is arranged perpendicular to the second support plate (102), and the other end is arranged perpendicular to the second limiting plate (106); The reinforcing member (200) is a rectangular tubular structure. The reinforcing member (200) is disposed at the connection between the first support plate (101) and the second support plate (102). The first side of the reinforcing member (200) is fixedly connected to the first support plate (101), and the second side of the reinforcing member (200) is fixedly connected to the second support plate (102). The sum of the widths of the reinforcing member (200) and the first limiting plate (105) on the opposite side of the first support plate (101) is less than the width of the first support plate (101). The sum of the widths of the reinforcing member (200) and the second limiting plate (106) on the opposite side of the second support plate (102) is less than the width of the second support plate (102).

2. The lifting column as described in claim 1, characterized in that, The first connecting plate (103) and the second connecting plate (104) are symmetrically arranged along the symmetrical plane, and the first limiting plate (105) and the second limiting plate (106) are symmetrically arranged along the symmetrical plane.

3. The lifting column as described in claim 2, characterized in that, The first support plate (101) and the second support plate (102) are an integral structure processed by bending process.

4. The lifting column as described in claim 3, characterized in that, Both the first and second sides are integral structures manufactured through a bending process.

5. The lifting column as described in claim 3, characterized in that, The first connecting plate (103) is formed by welding with the first supporting plate (101) and / or the first limiting plate (105); The second connecting plate (104) is formed by welding with the second supporting plate (102) and / or the second limiting plate (106).

6. A lifting machine, characterized in that, Includes the lift column (1) as described in any one of claims 1-5, as well as the base (3), movable seat (4), connecting seat (5), support arm (6), limiting seat (7), crossbeam (8), hydraulic drive device (2), and lifting device; The bottom end of the lifting column (1) is fixedly connected to the base (3); The movable seat (4) is slidably disposed within the receiving cavity (500) formed by the first limiting plate (105) and its extension line and the second limiting plate (106) and its extension line; the movable seat (4) includes a limiting cavity that extends vertically through itself; The limiting seat (7) is fixedly connected to the base (3); the limiting seat (7) is disposed in the limiting cavity, and the outer wall of the movable seat (4) is tightly fitted with the inner wall of the movable seat (4); The connecting seat (5) is fixedly connected to the movable seat (4); the support arm (6) is rotatably connected to the connecting seat (5); The lifting device is configured to drive the movable seat (4) to move along its preset track by relying on the power provided by the hydraulic drive device (2).

7. The lift as described in claim 6, characterized in that, It also includes a first limiting block (15) and a second limiting block (16) for limiting the movable seat (4); The first limiting block (15) is fixedly disposed in the first mounting cavity (300) enclosed by the first support plate (101), the first connecting plate (103), the first limiting plate (105) and its extension line and the reinforcing member (200); the first limiting block (15) is at least partially in close contact with the outer wall of the movable seat (4); The second limiting block (16) is fixedly disposed in the second mounting cavity (400) enclosed by the second support plate (102), the second connecting plate (104), the second limiting plate (106) and their extension lines and the reinforcing member (200); the second limiting block (16) is at least partially in close contact with the outer wall of the movable seat (4).

8. The lift as described in claim 7, characterized in that, The first limiting block (15) includes a first sliding plate groove that extends vertically through itself; the second limiting block (16) includes a second sliding plate groove that extends vertically through itself; The outer wall of the movable seat (4) is fixed with a first limiting slide plate (17) and a second limiting slide plate (18); the first limiting slide plate (17) is slidably disposed in the first slide plate groove and is tightly fitted with the inner wall of the first slide plate groove; the second limiting slide plate (18) is slidably disposed in the second slide plate groove and is tightly fitted with the inner wall of the second slide plate groove.

9. The lift as described in claim 6, characterized in that, The lifting device includes a lifting hydraulic cylinder (11), a lifting chain (12), a lifting wheel (13), and a fixed seat (14); the fixed seat (14) is fixedly mounted on the end of the moving end of the lifting hydraulic cylinder (11); the lifting wheel (13) is rotatably connected to the fixed seat (14); the lifting chain (12) meshes with the upper part of the lifting wheel (13); one end of the lifting chain (12) is fixedly connected to the moving seat (4), and the other end is fixedly connected to the lift column (1) or the base (3).

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