Cylinder and shaft workpiece lifting appliance

Abstract

The utility model relates to the technical field of workpiece lifting, and particularly discloses a cylinder and shaft workpiece lifting appliance which comprises a cross beam, a clamping device, a push-pull device, a linkage device and a control device, clamping jaw assemblies are arranged at the lower ends of the first clamping part and the second clamping part respectively; the push-pull device comprises a first push part and a second push part which are oppositely arranged in the length direction of the cross beam; the two ends of the linkage device are rotationally connected to the first clamping part and the second clamping part correspondingly, so that when the first pushing part and the second pushing part push and pull the first clamping part and the second clamping part, the linkage device can drive the first clamping part and the second clamping part to be close to each other or away from each other along the cross beam at the same time. Therefore, cylinders and shaft workpieces can be inserted from the two ends to be hoisted, bearing positions at the ends of the workpieces are prevented from being scratched, and therefore the potential safety hazards such as deflection, swinging and falling of the workpieces in the hoisting process are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to workpiece hoisting technical field, especially to a kind of cylinder, shaft workpiece lifting appliance. BACKGROUND

[0002] In the machining process of machining cylinder, shaft workpiece in turning, boring, milling, drilling, it needs to clamp and transport workpiece.Currently, when cylinder, shaft workpiece is handled to V-shaped tooling, workpiece is usually bound after using lifting belt, rope, and workpiece is hoisted and transported using travelling crane.Workpiece is usually connected with travelling crane using very simple lifting appliance, although it can realize translation, but in hoisting process, there are workpiece deflection, swing, falling and other security risks.If more fastened and solid lifting appliance is used, workpiece is not convenient to remove from travelling crane, leading to that transport and installation time is prolonged, and production efficiency is greatly reduced. SUMMARY

[0003] Therefore, the utility model provides a kind of cylinder, shaft workpiece lifting appliance, can be inserted from both ends and hoist cylinder, shaft workpiece, avoid to cause scratch to bearing position of workpiece end, to solve workpiece deflection, swing, falling and other security risks in hoisting process.

[0004] The embodiment of the utility model provides a kind of cylinder, shaft workpiece lifting appliance, including crossbeam, clamping device, push-pull device, linkage device and control device, clamping device includes the first clamping part and the second clamping part of the opposite setting in the both ends of crossbeam, the upper end of first clamping part and second clamping part is slidably connected in crossbeam, and the lower end of first clamping part and second clamping part is respectively provided with jaw assembly;Push-pull device includes the first push part and the second push part of the opposite setting on the crossbeam along the length direction of crossbeam, and the end of first push part is connected to the upper end of first clamping part, and the end of second push part is connected to the upper end of second clamping part;Linkage device is rotationally arranged below the middle part of crossbeam, and the both ends of linkage device are rotationally connected to the upper part of first clamping part and second clamping part, so that when first push part and second push part respectively push, pull first clamping part and second clamping part, linkage device can simultaneously drive first clamping part and second clamping part along crossbeam and approach each other or away from each other;Control device is signal connected to first push part and second push part.

[0005] Further, linkage device includes intermediate link, first connecting rod and second connecting rod, and the middle part of intermediate link is rotationally connected to the bottom of crossbeam;First connecting rod and second connecting rod are arranged on the two sides of intermediate link, and the both ends of first connecting rod are respectively rotationally connected to first clamping part and the first end of intermediate link, and the both ends of second connecting rod are respectively rotationally connected to second clamping part and the second end of intermediate link.

[0006] Furthermore, the first or second clamping component includes a sliding seat and a support column. The sliding seat is slidably connected to the lower part of the crossbeam; the support column is arranged vertically and is connected to the lower part of the sliding seat through a rotating assembly so that the support column can rotate along its own axis.

[0007] Furthermore, the gripper assembly includes a gripper, a clamping structure sleeve, and a clamping plate. The gripper is horizontally positioned below the support column. The clamping structure sleeve is detachably fitted onto the outside of the gripper. Multiple first connecting holes are provided around the gripper, and multiple second connecting holes are provided on the clamping structure sleeve. A first bolt passes through the first and second connecting holes. The clamping plate is vertically connected to the top of the clamping structure sleeve. Multiple third connecting holes are provided on the support column, and multiple fourth connecting holes are provided on the clamping plate. A second bolt passes through the third and fourth connecting holes.

[0008] Furthermore, the lifting device for cylindrical and shaft-type workpieces also includes an anti-slip pad, which is connected to the support column and the claw.

[0009] Furthermore, the first or second pushing component includes a telescopic assembly and a connecting seat, the telescopic assembly being connected above the crossbeam; the lower end of the connecting seat is connected to the sliding seat, and the upper end of the connecting seat is connected to the telescopic assembly.

[0010] Furthermore, the lifting device for cylindrical and shaft-type workpieces also includes a protective cover, which is located outside the linkage device and connected to the crossbeam.

[0011] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following: a lifting device for cylindrical and shaft-type workpieces, comprising a crossbeam, a clamping device, a push-pull device, a linkage device, and a control device. The clamping device includes a first clamping component and a second clamping component disposed opposite to each other at both ends of the crossbeam. The upper ends of the first clamping component and the second clamping component are slidably connected to the crossbeam, and the lower ends of the first clamping component and the second clamping component are respectively provided with gripper assemblies. The push-pull device includes a first pushing component and a second pushing component disposed opposite to each other on the crossbeam along the length direction of the crossbeam. The end of the first pushing component is connected to the upper end of the first clamping component, and the end of the second pushing component is connected to the upper end of the second clamping component. The linkage device is rotatably disposed below the middle of the crossbeam, and the two ends of the linkage device are rotatably connected to the upper parts of the first clamping component and the second clamping component, so that when the first pushing component and the second pushing component push and pull the first clamping component and the second clamping component respectively, the linkage device can simultaneously drive the first clamping component and the second clamping component to move closer to or further away from each other along the crossbeam. The control device is signal-connected to the first pushing component and the second pushing component. Therefore, the lifting device for cylindrical and shaft-shaped workpieces can be inserted from both ends to lift cylindrical and shaft-shaped workpieces, avoiding scratches on the bearing positions at the ends of the workpieces, thereby solving safety hazards such as workpiece tilting, swinging, and falling during the lifting process.

[0012] The linkage device comprises an intermediate connecting rod, a first connecting rod and a second connecting rod, so that the first pushing component and the second pushing component can apply auxiliary forces to each other when moving close to or away from each other, thereby ensuring that the workpiece is balanced in force during clamping or releasing of the workpiece, achieving stable clamping and fixing of the workpiece, avoiding the workpiece from falling off during hoisting, and improving safety.

[0013] The first clamping component or the second clamping component comprises a sliding seat and a support column, and the support column is rotationally connected to the lower side of the sliding seat through a rotating assembly, so that the support column can rotate along the axis direction of the support column, that is, the direction of the clamping jaw assembly is adjusted, so that the first clamping component and the second clamping component can be used for hoisting workpieces of different shapes such as through-hole workpieces, cuboid workpieces and solid cylindrical workpieces.

[0014] The clamping jaw assembly comprises a clamping structure sleeve and a clamping piece made of a wear-resistant nylon soft material, which can avoid wear of the clamping jaw and the support column, prevent scratching of the workpiece, increase the friction between the workpiece and the clamping jaw, and have an insulating effect.

[0015] The anti-skid pad is connected to the support column and the clamping jaw, which can further increase the friction between the workpiece and the clamping jaw and between the workpiece and the support column, and avoid the workpiece from falling off during hoisting.

[0016] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0017] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Moreover, the same reference numerals in the drawings indicate the same or similar elements throughout the several drawings. Among them:

[0018] Figure 1 A structure schematic view of a cylindrical and shaft workpiece hoist is shown in an embodiment of the present application;

[0019] Figure 2 A structure schematic view of a structure schematic view of a cylindrical and shaft workpiece hoist is shown in an embodiment of the present application; Figure 1 A structure schematic view of a structure schematic view of a cylindrical and shaft workpiece hoist is shown in an embodiment of the present application;

[0020] Figure 3 A structure schematic view of a structure schematic view of a cylindrical and shaft workpiece hoist is shown in an embodiment of the present application; Figure 1 A structure schematic view of a structure schematic view of a cylindrical and shaft workpiece hoist is shown in an embodiment of the present application;

[0021] Figure 4 The embodiment is shown Figure 1 The structural schematic diagram of the jaw assembly of the embodiment is shown.

[0022] Wherein, Figures 1 to 4 The correspondence between the reference signs and the component names in the drawings is as follows:

[0023] 1 beam, 21 first clamping component, 22 second clamping component, 23 sliding seat, 24 support column, 25 non-slip pad, 3 jaw assembly, 31 claw, 32 clamping structure sleeve, 33 first bolt, 34 clamping piece, 35 second bolt, 41 first pushing component, 42 second pushing component, 43 telescopic assembly, 44 connecting seat, 5 linkage device, 51 intermediate connecting rod, 52 first connecting rod, 53 second connecting rod, 54 protective cover, 6 control device. DETAILED DESCRIPTION

[0024] In order to enable the above-mentioned purposes, features and advantages of the present application to be more clearly understood, the present application will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0025] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0026] The following refers to Figures 1 to 4 A cylindrical and shaft workpiece lifting appliance is provided according to some embodiments of the present application.

[0027] As Figure 1 shown, a cylindrical and shaft workpiece lifting appliance is provided according to an embodiment of the present application, which comprises a beam 1, a clamping device, a push-pull device, a linkage device 5 and a control device 6, the clamping device comprises a first clamping component 21 and a second clamping component 22 oppositely arranged at both ends of the beam 1, the upper ends of the first clamping component 21 and the second clamping component 22 are respectively connected to the beam 1 in a sliding manner, so that the first clamping component 21 and the second clamping component 22 can move closer to or away from each other along the beam 1; the lower ends of the first clamping component 21 and the second clamping component 22 are respectively provided with a jaw assembly 3 for inserting into the workpiece from both ends of the cylindrical and shaft workpiece to lift the workpiece.

[0028] As Figure 1As shown, the push-pull device comprises a first push component 41 and a second push component 42 oppositely fixed on the cross beam 1 along the length direction of the cross beam 1, the installation direction of the first push component 41 and the second push component 42 is opposite, the end of the first push component 41 is fixedly connected to the upper end of the first clamping component 21, and the end of the second push component 42 is fixedly connected to the upper end of the second clamping component 22, so that when the first push component 41 and the second push component 42 move close to or away from each other along the cross beam 1, the first clamping component 21 and the second clamping component 22 can be driven to move close to or away from each other.

[0029] As shown in the figure, Figure 1 The linkage device 5 is rotationally arranged below the middle part of the cross beam 1, and the two ends of the linkage device 5 are respectively rotationally connected to the upper parts of the first clamping component 21 and the second clamping component 22, so that when the first push component 41 and the second push component 42 respectively push the first clamping component 21 and the second clamping component 22, the linkage device 5 can simultaneously drive the first clamping component 21 and the second clamping component 22 to move close to each other along the cross beam 1; when the first push component 41 and the second push component 42 respectively pull the first clamping component 21 and the second clamping component 22, the linkage device 5 can simultaneously drive the first clamping component 21 and the second clamping component 22 to move away from each other along the cross beam 1. That is, the linkage device 5 can make the first push component 41 and the second push component 42 exert auxiliary forces on each other, so that the first clamping component 21 and the second clamping component 22 can better clamp and fix the workpiece, and ensure that the force on both sides of the workpiece is more balanced and the clamping is more stable when the workpiece is clamped.

[0030] As shown in the figure, Figure 1 The control handle is further arranged on the cross beam 1, and the control device 6 is installed on the control handle, and the control device 6 is signal-connected to the first push component 41 and the second push component 42, so that the starting and stopping of the first push component 41 and the second push component 42 are controlled by the control device 6.

[0031] Specifically, when the first pushing component 41 and the second pushing component 42 are close to each other, the linkage device 5 can pull the first clamping component 21 and the second clamping component 22 along the crossbeam 1 to be close to each other, so that the distance between the first clamping component 21 and the second clamping component 22 is reduced, and the workpiece to be hoisted is clamped and fixed between the first clamping component 21 and the second clamping component 22. When the first pushing component 41 and the second pushing component 42 are away from each other, the linkage device 5 can push the first clamping component 21 and the second clamping component 22 along the crossbeam 1 to be away from each other, so that the distance between the first clamping component 21 and the second clamping component 22 is increased, and the workpiece being hoisted is released at the target position such as a tool rack. Thus, the cylinder and shaft workpiece hoist can be inserted from both ends to hoist the cylinder and shaft workpiece, avoiding scratching the bearing position of the workpiece end, thereby solving the safety hazards such as workpiece deflection, swing and falling during hoisting.

[0032] As shown in Figures 2 to 3 The linkage device 5 includes an intermediate connecting rod 51, a first connecting rod 52 and a second connecting rod 53. The middle part of the intermediate connecting rod 51 is rotationally connected to the bottom of the crossbeam 1. The first connecting rod 52 and the second connecting rod 53 are arranged on both sides of the intermediate connecting rod 51. The two ends of the first connecting rod 52 are respectively rotationally connected to the first clamping component 21 and the first end of the intermediate connecting rod 51. The two ends of the second connecting rod 53 are respectively rotationally connected to the second clamping component 22 and the second end of the intermediate connecting rod 51.

[0033] Specifically, when the first pushing component 41 and the second pushing component 42 are close to each other, the first pushing component 41 applies a pushing force to the first connecting rod 52, so that the first connecting rod 52 drives the intermediate connecting rod 51 to rotate. Since the second end of the intermediate connecting rod 51 is also connected to the second connecting rod 53, the intermediate connecting rod 51 can simultaneously pull the second connecting rod 53, so that the second connecting rod 53 can better pull the second clamping component 22 to the middle. Similarly, the second pushing component 42 simultaneously applies a pushing force to the second connecting rod 53, so that the second connecting rod 53 can drive the intermediate connecting rod 51 to rotate. Since the first end of the intermediate connecting rod 51 is connected to the first connecting rod 52, the intermediate connecting rod 51 can pull the first connecting rod 52 while rotating, so that the first connecting rod 52 can better pull the second clamping component 22 to the middle.

[0034] It can be understood that when the workpiece is released, the linkage device 5 can use the same principle to make the first clamping component 21 and the second clamping component 22 away from each other. Since the cylinder and shaft workpiece to be hoisted has a large volume and weight, it is ensured that the stress on both sides of the workpiece is more balanced when the workpiece is released, the clamping is more stable, and the sudden separation of one side of the workpiece from the clamping device is avoided.

[0035] The first pushing component 41 and the second pushing component 42 can also work separately, at this time, the linkage device 5 can still drive the first pushing component 41 or the second pushing component 42 to move close to or away from each other, so as to ensure that the force on the workpiece is more balanced when the workpiece is clamped, and the clamping is more stable.

[0036] As shown in Figures 1 to 3 , the first clamping component 21 or the second clamping component 22 comprises a sliding seat 23 and a support column 24. The sliding seat 23 is slidingly connected below the cross beam 1, so that the first clamping component 21 and the second clamping component 22 can slide along the cross beam 1. The support column 24 is arranged in a vertical direction and is connected below the sliding seat 23 through a rotating assembly, so that the support column 24 can rotate along its own axis direction, thereby adjusting the direction of the jaw assembly 3, so that the cylinder, shaft workpiece lifting appliance can be used for clamping, supporting and hooking different shapes of cylinder and shaft workpieces. Figure 1 As shown by the arrow in , the rotatable direction of the support column 24 is shown, and the rotation angle can be set to 90 degrees, 180 degrees, etc. It can be understood that the specific type of rotating assembly is not limited here and can be a bearing assembly, etc. as long as the rotating connection between the support column 24 and the sliding seat 23 is achieved.

[0037] Figures 2 to 4 As shown in , the jaw assembly 3 comprises a jaw 31, a clamping structure sleeve 32 and a clamping piece 34. The jaw 31 is arranged below the support column 24 in a horizontal direction and is used for clamping the cylinder and shaft workpiece. The clamping structure sleeve 32 is detachably sleeved outside the jaw 31, which can avoid the abrasion of the jaw 31, and the detachable structure makes it convenient to replace the clamping structure sleeve 32 when it is worn out. A plurality of first connecting holes are formed around the jaw 31, a plurality of second connecting holes are formed on the clamping structure sleeve 32, and a first bolt 33 is arranged in the first connecting hole and the second connecting hole to detachably connect the clamping structure sleeve 32 to the jaw 31. The clamping piece 34 is connected above the clamping structure sleeve 32 in a vertical direction. A plurality of third connecting holes are formed on the support column 24, and a plurality of fourth connecting holes are formed on the clamping piece 34. A second bolt 35 is arranged in the third connecting hole and the fourth connecting hole to connect the clamping piece 34 to the support column 24, which can avoid the mutual abrasion between the cylinder and shaft workpiece and the support column 24.

[0038] Preferably, the clamping structure sleeve 32 and the clamping piece 34 are made of wear-resistant nylon soft material, which can increase the friction between the workpiece and the jaw 31, prevent scratching the workpiece, and also have an insulating effect.

[0039] It can be understood that, in the initial state, the claws 31 located below the first clamping component 21 and the second clamping component 22 are oppositely arranged, so that the claws 31 can be inserted into the hanging through-hole type workpiece (for example, a cylindrical workpiece) and a cuboid workpiece from both ends; the support columns 24 on both sides are rotated by 90 degrees, so that the claws 31 located below the first clamping component 21 and the second clamping component 22 are arranged in the same direction, at this time, the claws 31 can hook up the solid near-cylindrical workpiece, preferably, an arc-shaped groove is formed above the claws 31, which can avoid the workpiece from falling off; the support columns 24 on both sides are rotated by 180 degrees, so that the claws 31 located below the first clamping component 21 and the second clamping component 22 are oppositely arranged, at this time, the claws 31 can support the annular workpiece.

[0040] As shown in Figure 2 and Figure 3 , the cylindrical and shaft type workpiece lifting appliance further comprises a non-slip pad 25 connected to the support column 24 and the claw 31, which can further increase the friction between the workpiece and the claw 31 and the workpiece and the support column 24, and avoid the workpiece from falling off during hoisting.

[0041] As shown in Figure 2 and Figure 3 , the first pushing component 41 or the second pushing component 42 comprises a telescopic assembly 43 and a connecting seat 44, the telescopic assembly 43 is fixedly connected to the upper side of the cross beam 1, the lower end of the connecting seat 44 is fixedly connected to the sliding seat 23, and the upper end of the connecting seat 44 is fixedly connected to the telescopic assembly 43, so that the telescopic assembly 43 can drive the sliding seat 23 to slide along the cross beam 1. The control device 6 is signal connected to the telescopic assembly 43 on the first pushing component 41 and the second pushing component 42, respectively, so that the start and stop of the telescopic assembly 43 are controlled by the control device 6.

[0042] It can be understood that the specific type of the telescopic assembly 43 is not limited here and can be any one of an electric telescopic rod, a pneumatic telescopic cylinder or a hydraulic oil cylinder.

[0043] As shown in Figure 1 , the cylindrical and shaft type workpiece lifting appliance further comprises a protective cover 54 connected to the lower side of the middle part of the cross beam 1 and located outside the linkage device 5, which is used to protect the linkage device 5 and avoid damage to the intermediate connecting rod 51, the first connecting rod 52 or the second connecting rod 53 due to bumping.

[0044] In the description of the utility model, the term "a plurality of" refers to two or more than two, unless otherwise explicitly limited, the term "up", "down" and the like indicate the orientation or position relationship is based on the orientation or position relationship of the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicative or implied that the device or element must have a particular orientation, a particular orientation and operation, therefore, cannot be understood as a limitation on the utility model; The terms "connection", "installation", "fixing" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; It can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0045] In the description of the utility model, the terms "one embodiment", "some embodiments", "a specific embodiment" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the utility model, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, for those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A lifting tool for cylindrical and shaft-type workpieces, characterized in that, The utility model relates to a kind of push-pull device and control device, including: Beam (1); Clamping device, the clamping device includes first clamping component (21) and second clamping component (22) oppositely arranged in both ends of the beam (1), the upper end of the first clamping component (21) and the second clamping component (22) is slidably connected to the beam (1) respectively, the lower end of the first clamping component (21) and the second clamping component (22) is provided with jaw assembly (3) respectively; Push-pull device, the push-pull device includes first push component (41) and second push component (42) oppositely arranged on the beam (1) along the length direction of the beam (1), the end of the first push component (41) is connected to the upper end of the first clamping component (21), and the end of the second push component (42) is connected to the upper end of the second clamping component (22); Linkage device (5), the linkage device (5) is rotationally arranged below the middle of the beam (1), and the upper portion of the first clamping component (21) and the second clamping component (22) is rotationally connected to the two ends of the linkage device (5) respectively, so that the first push component (41) and the second push component (42) can simultaneously drive the first clamping component (21) and the second clamping component (22) to move closer to or away from each other along the beam (1) when pushing and pulling the first clamping component (21) and the second clamping component (22) respectively; Control device (6), the control device (6) is signal-connected to the first push component (41) and the second push component (42).

2. The cylindrical workpiece lifting device according to claim 1, wherein The linkage device (5) includes: Intermediate connecting rod (51), the middle portion of the intermediate connecting rod (51) is rotationally connected to the bottom of the beam (1); First connecting rod (52) and second connecting rod (53), the first connecting rod (52) and the second connecting rod (53) are arranged on the two sides of the intermediate connecting rod (51), and the two ends of the first connecting rod (52) are rotationally connected to the first clamping component (21) and the first end of the intermediate connecting rod (51) respectively, and the two ends of the second connecting rod (53) are rotationally connected to the second clamping component (22) and the second end of the intermediate connecting rod (51) respectively.

3. The cylindrical workpiece lifting device of claim 1, wherein The first clamping component (21) or the second clamping component (22) includes: Sliding seat (23), the sliding seat (23) is slidably connected below the beam (1); Support column (24), the support column (24) is arranged in vertical direction, and the support column (24) is connected to the lower side of the sliding seat (23) through rotating assembly, so that the support column (24) can rotate along its axis direction.

4. The cylindrical workpiece lifting device according to claim 3, wherein The jaw assembly (3) includes: Claw (31), the claw (31) is arranged below the support column (24) in horizontal direction; A clamping structure sleeve (32) is detachably sleeved outside the clamping jaw (31), a plurality of first connecting holes are formed around the clamping jaw (31), a plurality of second connecting holes are formed on the clamping structure sleeve (32), a first bolt (33) is arranged in the first connecting hole and the second connecting hole; A clamping piece (34) is connected above the clamping structure sleeve (32) in the vertical direction, a plurality of third connecting holes are formed on the support column (24), a plurality of fourth connecting holes are formed on the clamping piece (34), and a second bolt (35) is arranged in the third connecting hole and the fourth connecting hole.

5. The cylindrical workpiece lifting device of claim 4, wherein, Further comprising: A non-slip pad (25) is connected to the support column (24) and the clamping jaw (31).

6. The cylindrical workpiece lift of claim 3, wherein, The first pushing component (41) or the second pushing component (42) comprises: A telescopic assembly (43) is connected above the cross beam (1); A connecting seat (44) is connected to the sliding seat (23) at the lower end, and connected to the telescopic assembly (43) at the upper end.

7. The cylindrical workpiece lift of claim 1, wherein, Further comprising: A protective cover (54) is located outside the linkage device (5), and the protective cover (54) is connected to the cross beam (1).

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