Turnover tool for oil cylinder welding

Abstract

The utility model relates to the technical field of oil cylinder welding tools, in particular to an overturning tool for oil cylinder welding. The device comprises a positioning device and a transmission device, the positioning device comprises a sleeve and a rotating mechanism, the rotating mechanism is sleeved with the sleeve, the axis of the rotating mechanism coincides with the axis of the sleeve, and the rotating mechanism can rotate around the axis of the sleeve relative to the sleeve; the transmission device comprises a driving part, a roller group and a conveying belt rack, the driving part is connected with the roller group, and the conveying belt rack is arranged on the outer wall of the roller group in a sleeving manner; the rotating mechanism is meshed with the conveying belt rack. By arranging the sleeve, the rotating mechanism, the driving part, the roller group and the conveying belt rack, the oil cylinder can be welded without manually rotating the oil cylinder, so that the labor force is reduced, the welding time is shortened, the rotary welding at the same angle can be realized, and the overall performance and the qualified rate of the oil cylinder welding are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinder welding tooling, in particular to a turning tooling used for oil cylinder welding. Background Art

[0002] The columns, jacks and other equipment in the hydraulic support mainly play a load-bearing role. They control the overall movement of the support through the stroke. Moreover, the reliability, safety and fatigue life of each component of the hydraulic support can directly affect the overall performance of the product.

[0003] The welding of the oil cylinder in the column jack is particularly critical. During the welding process, different types of accessories that are different from the axis of the oil cylinder, such as joints, valve plates, lifting rings, etc., need to be welded on the outer edge of the oil cylinder. When welding the accessories, it is often necessary to flip the oil cylinder workpiece and then weld it. Flip welding is mainly to improve the overall performance, improve the aesthetics and avoid cracks. It can not only improve the performance and reliability of the entire hydraulic system, reduce the number of repairs, maintenance costs and prevent small cracks generated during welding, but also improve the appearance quality of the product, which to a certain extent reflects the manufacturer's technical level and quality control capabilities.

[0004] However, in the prior art, the flip welding of the oil cylinder is usually carried out on a platform or a transfer rack, and the oil cylinder needs to be flipped manually. This method is time-consuming, labor-intensive, and labor-intensive. Moreover, in the case of manual flipping, the flipping angle may be too large or too small, resulting in uneven welding of welds at various locations during welding, thereby reducing the strength of the oil cylinder or generating cracks during the welding process, greatly affecting the overall performance of the oil cylinder. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a flip tool for cylinder welding, which solves the problem that the flip welding of the cylinder in the prior art requires manual flipping of the cylinder, which is time-consuming, labor-intensive and labor-intensive. Moreover, in the case of manual flipping, the flipping angle may be too large or too small, resulting in uneven welding of the welds at various locations during welding, thereby reducing the strength of the cylinder or generating cracks during the welding process, greatly affecting the technical problem of the overall performance of the cylinder.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0009] The utility model provides a turning tool for cylinder welding, comprising a positioning device and a transmission device; the positioning device comprises a sleeve and a rotating mechanism, the sleeve is sleeved on the outside of the rotating mechanism and the axis of the rotating mechanism coincides with the axis of the sleeve, and the rotating mechanism can rotate relative to the sleeve around the axis of the sleeve; the transmission device comprises a driving member, a roller group and a conveyor belt rack, the driving member is connected to the roller group, and the conveyor belt rack is sleeved on the outer wall of the roller group; the rotating mechanism is meshed with the conveyor belt rack, the cylinder is sequentially sleeved into the sleeve and the rotating mechanism and the cylinder can rotate with the rotating mechanism, the driving member can drive the roller group to rotate, so as to drive the conveyor belt rack transmission, and then drive the rotating mechanism and the cylinder to rotate simultaneously around the axis of the sleeve.

[0010] Preferably, two rotating mechanisms are provided and the two rotating mechanisms are rotatably connected to the two ends of the sleeve respectively; two groups of transmission devices are provided and the two groups of transmission devices are arranged opposite to each other, and the two conveyor belt racks correspond to the two rotating mechanisms one by one respectively to drive the two rotating mechanisms to rotate simultaneously.

[0011] Preferably, the rotating mechanism includes a bearing, a plurality of mounting rods and a gear ring; the outer ring of the bearing is detachably mounted inside the sleeve, the gear ring is inserted on the inner ring of the bearing through the plurality of mounting rods, and the gear ring is meshed with the conveyor belt rack; an anti-slip gasket is fixedly mounted on the inner wall of the gear ring.

[0012] Preferably, the transmission device also includes a mounting plate, and the roller group includes a driving roller and a driven roller; the driving member passes through the mounting plate and is fixedly connected to the driving roller, the driven roller is rotatably mounted on the mounting plate through a rotating shaft, and the driven roller and the driving roller are parallel and located in the same plane, the conveyor belt rack is sleeved on the outer walls of the driving roller and the driven roller, and the conveyor belt rack connects the driving roller and the driven roller in series.

[0013] Preferably, a limiting plate is provided between the mounting plate and the conveyor belt rack and between the driving roller and the driven roller, and the limiting plate is used to limit the side of the rotating mechanism facing the mounting plate.

[0014] Preferably, it also includes a mounting platform and a lifting device; the bottoms of the two groups of transmission devices are fixedly mounted on the top of the mounting platform, the lifting device is fixedly mounted between the two groups of transmission devices, and the top of the lifting device is detachably connected to the sleeve.

[0015] Preferably, the lifting device includes a plurality of telescopic cylinders and a support plate; the fixed end of the telescopic cylinder is fixedly mounted on the mounting platform, the telescopic end of the telescopic cylinder is fixedly connected to the bottom of the support plate, and the top of the support plate is detachably connected to the outer wall of the sleeve.

[0016] Preferably, each end of the mounting platform is vertically connected with a support column for supporting the mounting platform, the transmission device and the positioning device.

[0017] Preferably, a hook is fixedly connected to a side of the support column away from the mounting platform.

[0018] (III) Beneficial effects

[0019] The beneficial effects of the utility model are:

[0020] 1. The utility model discloses a turning tool for oil cylinder welding. By setting a sleeve and a rotating mechanism, the oil cylinder is inserted into the sleeve and the rotating mechanism to realize the positioning and fixing of the oil cylinder. In addition, by setting a driving member, a roller group and a conveyor belt rack, the driving member drives the roller group to rotate, thereby driving the conveyor belt rack on the roller group to transmit. Since the rotating mechanism is meshed with the conveyor belt rack, the conveyor belt rack drives the rotating mechanism to rotate, thereby driving the oil cylinder to rotate around the axis of the sleeve, so that the oil cylinder can be welded without manual rotation of the oil cylinder, thereby reducing labor and welding time. In addition, since the rotating mechanism is meshed with the conveyor belt rack, it can realize rotation welding at the same angle, avoiding the oil cylinder rotating angle being too large or too small when the oil cylinder is rotated manually, resulting in uneven welding of the weld of the oil cylinder, thereby avoiding cracks during welding, improving the overall performance of the oil cylinder welding, and at the same time, no longer needing manual rotation of the oil cylinder also improves safety and improves the qualified rate of the oil cylinder.

[0021] 2. The utility model is a flip tool for cylinder welding. By setting two rotating mechanisms and two sets of transmission devices, it can make the cylinder more stable during flip welding and more uniform during welding. By setting bearings, multiple mounting rods and gear rings, the gear rings can mesh with the conveyor belt rack, so that the gear rings rotate with the transmission of the conveyor belt rack, and then drive the cylinder to rotate; the gear rings are connected with the inner ring of the bearing through multiple mounting rods, which realizes the integrity of the device, so that the conveyor belt rack drives the gear ring to rotate, and then drives the inner ring of the bearing to rotate, so as to drive the rotation of the cylinder and perform flip welding on the cylinder; by setting anti-skid washers, it can prevent the cylinder from slipping in the gear ring and prevent the cylinder from rotating without rotating with the rotation of the gear ring.

[0022] 3. The utility model is a turning tool for oil cylinder welding. By setting a mounting plate, it can realize the connection between the driving part and the active roller. The mounting plate supports the active roller and the driving part, making the installation of the driving part more stable, and the mounting plate also realizes the installation between the active roller and the driven roller. By setting a limit plate, it can limit the mounting rod to prevent the mounting rod from being separated from the inner ring of the bearing during the rotation of the gear ring because the mounting rod and the inner ring of the bearing are only inserted, thereby causing the gear ring to deviate from the transmission track of the conveyor belt rack.

[0023] 4. The utility model is a flip tool for oil cylinder welding. By setting a lifting device, it can support the sleeve. Moreover, since the top of the lifting device is detachably connected to the sleeve, it can be realized that when welding oil cylinders of different specifications, it is only necessary to disassemble the sleeve and the top of the lifting device, and install sleeves of different specifications on the top of the lifting device, so as to realize the replaceability of the device and make the device more applicable. By setting a telescopic cylinder and a support plate, it can support sleeves of different specifications. When the outer diameter of the replaced sleeve is larger than that of the original sleeve, the telescopic cylinder retracts to drive the support plate down, so that the axis of the gear ring always coincides with the axis of the sleeve; when the outer diameter of the replaced sleeve is smaller than that of the original sleeve, the telescopic cylinder extends to drive the support plate up, so that the axis of the gear ring always coincides with the axis of the sleeve.

[0024] 5. The utility model is a turning tool for oil cylinder welding. By arranging support columns at each end of the mounting platform, it can support the mounting platform and various devices installed on the mounting platform, so as to keep the mounting platform away from the ground, which is more convenient for welding. By arranging hooks on the support columns, the entire tool can be hung up, that is, it can be fixed together with other tools to form an assembly line. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a turning tool for oil cylinder welding according to the utility model;

[0026] Figure 2 It is a schematic diagram of the overall three-dimensional structure of a positioning device of a turning tool for oil cylinder welding according to the utility model;

[0027] Figure 3 It is a schematic diagram of the overall three-dimensional structure of a transmission device of a turning tool for cylinder welding according to the utility model;

[0028] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle.

[0029] [Description of Reference Numerals]

[0030] 1: Cylinder; 2: Positioning device; 21: Sleeve; 22: Rotating mechanism; 221: Bearing; 222: Mounting rod; 223: Ring gear; 3: Transmission device; 31: Driving member; 32: Roller group; 321: Active roller; 322: Driven roller; 33: Conveyor belt rack; 34: Mounting plate; 4: Limiting plate; 5: Mounting platform; 6: Lifting device; 61: Telescopic cylinder; 62: Support plate; 7: Support column; 8: Hook. DETAILED DESCRIPTION

[0031] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0032] Embodiment 1

[0033] like Figure 1-Figure 4 As shown, a turning tool for cylinder welding in this embodiment includes a positioning device 2 and a transmission device 3.

[0034] Specifically, the positioning device 2 includes a sleeve 21 and a rotating mechanism 22. The sleeve 21 is sleeved outside the rotating mechanism 22 and the axis of the rotating mechanism 22 coincides with the axis of the sleeve 21. The rotating mechanism 22 can rotate relative to the sleeve 21 around the axis of the sleeve 21. The transmission device 3 includes a driving member 31, a roller group 32 and a conveyor belt rack 33. The driving member 31 is connected to the roller group 32, and the conveyor belt rack 33 is sleeved on the outer wall of the roller group 32. The rotating mechanism 22 is meshed with the conveyor belt rack 33. The oil cylinder 1 is sequentially inserted into the sleeve 21 and the rotating mechanism 22 and the oil cylinder 1 can rotate with the rotating mechanism 22. The driving member 31 can drive the roller group 32 to rotate, so as to drive the transmission of the conveyor belt rack 33, and then drive the rotating mechanism 22 and the oil cylinder 1 to rotate around the axis of the sleeve 21 at the same time. By setting the sleeve 21 and the rotating mechanism 22, the oil cylinder 1 is inserted into the sleeve 21 and the rotating mechanism 22, so as to realize the positioning and fixing of the oil cylinder 1. Furthermore, by providing a driving member 31, a roller group 32 and a conveyor belt rack 33, the driving member 31 drives the roller group 32 to rotate, thereby driving the conveyor belt rack 33 on the roller group 32 to transmit. Since the rotating mechanism 22 is meshed with the conveyor belt rack 33, the conveyor belt rack 33 drives the rotating mechanism 22 to rotate, thereby driving the oil cylinder 1 to rotate around the axis of the sleeve 21, so that the oil cylinder 1 does not need to be manually rotated to weld the oil cylinder 1, which reduces labor and welding time. Moreover, since the rotating mechanism 22 is meshed with the conveyor belt rack 33, it can realize the rotation welding at the same angle, avoiding the oil cylinder 1 rotating too large or too small when the oil cylinder 1 is manually rotated, resulting in uneven welding of the weld of the oil cylinder 1, thereby avoiding cracks during welding, improving the overall performance of the oil cylinder 1 welding, and at the same time, no longer needing to manually rotate the oil cylinder 1, which also improves safety and improves the qualified rate of the oil cylinder 1. In addition, it is explained here that the driving member 31 can be a single-axis reduction motor.

[0035] Further, two rotating mechanisms 22 are provided and the two rotating mechanisms 22 are rotatably connected to the two ends of the sleeve 21. Two transmission devices 3 are provided and the two transmission devices 3 are arranged opposite to each other. The two conveyor belt racks 33 correspond to the two rotating mechanisms 22 one by one, respectively, so as to drive the two rotating mechanisms 22 to rotate simultaneously, which can make the oil cylinder 1 more stable during flip welding and more uniform during welding.

[0036] Specifically, the rotating mechanism 22 includes a bearing 221, a plurality of mounting rods 222 and a gear ring 223. The outer ring of the bearing 221 is detachably mounted inside the sleeve 21, and the gear ring 223 is inserted on the inner ring of the bearing 221 through a plurality of mounting rods 222, which realizes the integrity of the device, so that the conveyor belt rack 33 drives the gear ring 223 to rotate, and then drives the inner ring of the bearing 221 to rotate, so as to realize the rotation of the oil cylinder 1, and perform flip welding on the oil cylinder 1 and the accessories. The gear ring 223 is meshed with the conveyor belt rack 33, so that the gear ring 223 rotates with the transmission of the conveyor belt rack 33, and then drives the oil cylinder 1 to rotate. An anti-skid washer is fixedly mounted on the inner wall of the gear ring 223, which can prevent the oil cylinder 1 from slipping in the gear ring 223 and prevent the oil cylinder 1 from not rotating with the rotation of the gear ring 223. Preferably, the transmission device 3 also includes a mounting plate 34, and the roller group 32 includes an active roller 321 and a driven roller 322. The driving member 31 passes through the mounting plate 34 and is fixedly connected to the driving roller 321. The driven roller 322 is rotatably mounted on the mounting plate 34 through a rotating shaft. The driven roller 322 and the driving roller 321 are parallel and located in the same plane. The conveyor belt rack 33 is sleeved on the outer walls of the driving roller 321 and the driven roller 322. The conveyor belt rack 33 connects the driving roller 321 and the driven roller 322 in series. The mounting plate 34 can realize the connection between the driving member 31 and the driving roller 321. The mounting plate 34 provides support for the driving roller 321 and the driving member 31, making the installation of the driving member 31 more stable. In addition, the mounting plate 34 also realizes the installation between the driving roller 321 and the driven roller 322, making the tooling more complete.

[0037] Furthermore, a limit plate 4 is provided between the mounting plate 34 and the conveyor belt rack 33 and between the driving roller 321 and the driven roller 322. The limit plate 4 is used to limit the side of the rotating mechanism 22 facing the mounting plate 34 to prevent the mounting rod 222 from being detached from the inner ring of the bearing 221 during the rotation of the ring gear 223, as the mounting rod 222 and the inner ring of the bearing 221 are only inserted, thereby causing the ring gear 223 to deviate from the transmission trajectory of the conveyor belt rack 33.

[0038] Furthermore, the turning tool for cylinder welding in this embodiment also includes a mounting platform 5 and a lifting device 6.

[0039] Specifically, the bottom of the two groups of transmission devices 3 are fixedly installed on the top of the mounting platform 5, the lifting device 6 is fixedly installed between the two groups of transmission devices 3 and the top of the lifting device 6 is detachably connected to the sleeve 21, which can support the sleeve 21, and because the top of the lifting device 6 is detachably connected to the sleeve 21, it can be achieved that when welding cylinders 1 of different specifications, only the sleeve 21 and the top of the lifting device 6 need to be removed, and sleeves 21 of different specifications need to be installed on the top of the lifting device 6, thereby realizing the replaceability of the device and making the device more applicable.

[0040] The lifting device 6 includes a plurality of telescopic cylinders 61 and a support plate 62. The fixed end of the telescopic cylinder 61 is fixedly mounted on the mounting platform 5, the telescopic end of the telescopic cylinder 61 is fixedly connected to the bottom of the support plate 62, and the top of the support plate 62 is detachably connected to the outer wall of the sleeve 21. By setting the telescopic cylinder 61 and the support plate, it is possible to support sleeves 21 of different specifications. When the outer diameter of the replaced sleeve 21 is larger than that of the original sleeve 21, the telescopic cylinder 61 retracts to drive the support plate 62 to descend, so that the axis of the ring gear 223 always coincides with the axis of the sleeve 21; when the outer diameter of the replaced sleeve 21 is smaller than that of the original sleeve 21, the telescopic cylinder 61 extends to drive the support plate 62 to rise, so that the axis of the ring gear 223 always coincides with the axis of the sleeve 21.

[0041] Furthermore, each end of the mounting platform 5 is vertically connected with a support column 7, which is used to support the mounting platform 5, the transmission device 3 and the positioning device 2, and can support the mounting platform 5 and each device mounted on the mounting platform 5, so as to achieve the mounting platform 5 away from the ground, which is more convenient during welding. Preferably, a hook 8 is fixedly connected to the side of the support column 7 away from the mounting platform 5, which can hang the entire tooling, that is, it can be fixed together with other tooling to form an assembly line.

[0042] Through the above structure, the working principle of a turning tool for cylinder welding in this embodiment is as follows:

[0043] First, assemble the tooling, then determine the specifications of the oil cylinder 1 to be welded, select the sleeve 21, bearing 221 and gear ring 223 of the same specifications, and insert the oil cylinder 1 into the sleeve 21, bearing 221 and gear ring 223, so that the axis of the oil cylinder 1 coincides with the axis of the sleeve 21 and the rotating mechanism 22, and the oil cylinder 1 can rotate around the axis of the sleeve 21 with the rotating mechanism 22. Engage the gear ring 223 with the conveyor belt rack 33, and drive the driving member 31 to drive the active roller 321 to rotate, and the active roller 321 drives the driven roller 322 to rotate, thereby driving the conveyor belt rack 33 to transmit, and driving the gear ring 223, the mounting rod 222 and the inner ring of the bearing 221 to rotate at the same time, thereby driving the oil cylinder 1 to rotate with the rotation of the gear ring 223. After the oil cylinder 1 rotates, the welding gun welds the accessories with different axes from the oil cylinder 1 to the outer wall of one end of the oil cylinder 1. After the oil cylinder 1 is welded, the welded oil cylinder 1 is taken out to complete the welding of the oil cylinder 1. Finally, the above steps are repeated to complete the welding of the oil cylinder 1 of the same specification.

[0044] When welding the oil cylinder 1 with specifications different from those in step S1, select a sleeve 21, a bearing 221 and a gear ring 223 different from those in the above steps, and insert the oil cylinder 1 into the sleeve 21, the bearing 221 and the gear ring 223, so that the axis of the oil cylinder 1 coincides with the axis of the sleeve 21 and the rotating mechanism 22, and the oil cylinder 1 can rotate around the axis of the sleeve 21 with the rotating mechanism 22. Repeat the above welding steps to complete the welding of the oil cylinder 1 with specifications different from those in step S1 and the accessories with different axes of the oil cylinder 1 on the outer wall of one end of the oil cylinder 1.

[0045] Repeat all the above steps to complete the welding of multiple oil cylinders 1 of the same or different specifications and accessories of the oil cylinder 1 with different axes.

[0046] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0049] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means 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 this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0050] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A turning tool for cylinder welding, characterized in that: It comprises a positioning device (2) and a transmission device (3); The positioning device (2) comprises a sleeve (21) and a rotating mechanism (22), wherein the sleeve (21) is sleeved outside the rotating mechanism (22) and the axis of the rotating mechanism (22) coincides with the axis of the sleeve (21), and the rotating mechanism (22) can rotate relative to the sleeve (21) around the axis of the sleeve (21); The transmission device (3) comprises a driving member (31), a roller group (32) and a conveyor belt rack (33), wherein the driving member (31) is connected to the roller group (32), and the conveyor belt rack (33) is sleeved on the outer wall of the roller group (32); The rotating mechanism (22) is meshed with the conveyor belt rack (33), and the oil cylinder (1) is sequentially inserted into the sleeve (21) and the rotating mechanism (22). 且所述油缸 (1) 能够随着所述旋转 Institutions (22) 转动 The driving member (31) can drive the roller group (32) to rotate, thereby driving the conveyor belt rack (33) to transmit, and further driving the rotating mechanism (22) and the cylinder (1) to rotate simultaneously around the axis of the sleeve (21).

2. A turning tool for cylinder welding according to claim 1, characterized in that: The rotating mechanisms (22) are provided with two, and the two rotating mechanisms (22) are respectively rotatably connected to the two ends of the sleeve (21); The transmission device (3) is provided with two groups and the two groups of the transmission device (3) are arranged opposite to each other. The two conveyor belt racks (33) correspond to the two rotating mechanisms (22) one by one, respectively, so as to drive the two rotating mechanisms (22) to rotate simultaneously.

3. The turning tool for cylinder welding according to claim 1, characterized in that: The rotating mechanism (22) comprises a bearing (221), a plurality of mounting rods (222) and a gear ring (223); The outer ring of the bearing (221) is detachably mounted inside the sleeve (21), the gear ring (223) is inserted into the inner ring of the bearing (221) through the plurality of mounting rods (222), and the gear ring (223) is meshed with the conveyor belt rack (33); An anti-slip gasket is fixedly mounted on the inner wall of the gear ring (223).

4. The turning tool for cylinder welding according to claim 1, characterized in that: The transmission device (3) further comprises a mounting plate (34), and the roller set (32) comprises a driving roller (321) and a driven roller (322); The driving member (31) passes through the mounting plate (34) and is fixedly connected to the driving roller (321); the driven roller (322) is rotatably mounted on the mounting plate (34) via a rotating shaft; the driven roller (322) and the driving roller (321) are parallel and located in the same plane; the conveyor belt rack (33) is sleeved on the outer walls of the driving roller (321) and the driven roller (322); and the conveyor belt rack (33) connects the driving roller (321) and the driven roller (322) in series.

5. A turning tool for oil cylinder welding as claimed in claim 4, characterized in that: A limiting plate (4) is provided between the mounting plate (34) and the conveyor belt rack (33) and between the driving roller (321) and the driven roller (322), and the limiting plate (4) is used to limit the side of the rotating mechanism (22) facing the mounting plate (34).

6. The turning tool for cylinder welding according to claim 1, characterized in that: It also includes a mounting platform (5) and a lifting device (6); The bottoms of the two groups of transmission devices (3) are fixedly mounted on the top of the mounting platform (5), the lifting device (6) is fixedly mounted between the two groups of transmission devices (3), and the top of the lifting device (6) is detachably connected to the sleeve (21).

7. A turning tool for cylinder welding as claimed in claim 6, characterized in that: The lifting device (6) comprises a plurality of telescopic cylinders (61) and a support plate (62); The fixed end of the telescopic cylinder (61) is fixedly mounted on the mounting platform (5), the telescopic end of the telescopic cylinder (61) is fixedly connected to the bottom of the support plate (62), and the top of the support plate (62) is detachably connected to the outer wall of the sleeve (21).

8. The turning tool for cylinder welding according to claim 6, characterized in that: Each end of the installation platform (5) is vertically connected to a support column (7) for supporting the installation platform (5), the transmission device (3) and the positioning device (2).

9. A turning tool for oil cylinder welding as claimed in claim 8, characterized in that: A hook (8) is fixedly connected to the side of the support column (7) away from the mounting platform (5).

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