Oil cylinder welding positioning tool

Abstract

The utility model relates to the technical field of oil cylinder manufacturing, and provides an oil cylinder welding positioning tool which comprises a bottom plate. A positioning reference seat and at least two supporting plates which are arranged at intervals are arranged on the bottom plate; the supporting plates are provided with first positioning grooves, the groove opening directions of the first positioning grooves face upwards, and the first positioning grooves of any two supporting plates are mutually aligned in the axial direction. The positioning reference seat is arranged on one side of the supporting plate and provided with a positioning pin, and the positioning pin is perpendicular to the axial direction. Under the condition that the cylinder barrel structure is positioned on the oil cylinder welding positioning tool, the axial direction is parallel to the length direction of the cylinder barrel structure, the cylinder barrel structure is supported in the first positioning groove, and the positioning pin is inserted into an oil nozzle of the cylinder barrel structure. According to the scheme, the welding precision and efficiency in the oil cylinder production process can be improved by reducing the positioning difficulty of the cylinder barrel structure.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinder manufacturing, in particular to an oil cylinder welding positioning tool. Background Art

[0002] The cylinder is a key component of the hydraulic system, and the installation accuracy during its production process is crucial to the operation of the entire system.

[0003] In the manual welding process of the oil nozzle, mounting plate, oil circuit bracket and other parts of the cylinder structure, since the cylinder is mostly cylindrical and difficult to position, it is necessary to complete it through a series of complex operations such as marking, anchoring, measuring with a tape measure, measuring with an angle meter, spot welding, etc. These operations not only increase the difficulty of welding, but also greatly reduce the welding efficiency.

[0004] In addition, since it is difficult to ensure the reliable positioning of the cylinder structure during manual welding, not only is the work efficiency low, but the welding accuracy is often difficult to ensure. This not only affects the quality of the oil cylinder, but may also pose a potential threat to the stable operation of the hydraulic system. Therefore, how to improve the welding accuracy and efficiency in the production process of the oil cylinder has become a problem that needs to be solved urgently. Utility Model Content

[0005] The utility model provides a cylinder welding positioning tool, which is used to solve the defects of low working efficiency and difficulty in ensuring welding accuracy when manually welding the cylinder barrel structure of the cylinder in the prior art, and improves the welding accuracy and efficiency in the production process of the cylinder.

[0006] The utility model provides a cylinder welding positioning tool, comprising a base plate; a positioning reference seat and at least two support plates arranged at intervals are arranged on the base plate; the support plate is provided with a first positioning groove, the groove direction of the first positioning groove faces upward, and the first positioning grooves of any two support plates are aligned with each other in the axial direction; the positioning reference seat is arranged on one side of the support plate, and the positioning reference seat is provided with a positioning pin, and the positioning pin is perpendicular to the axial direction; when the cylinder structure is positioned on the cylinder welding positioning tool, the axial direction is parallel to the length direction of the cylinder structure, the cylinder structure is supported on the first positioning groove, and the positioning pin is inserted into the oil nozzle of the cylinder structure.

[0007] According to a cylinder welding positioning tool provided by the utility model, an axial positioning plate is arranged on the bottom plate; when the cylinder structure is positioned on the cylinder welding positioning tool, the axial positioning plate stops at one end of the cylinder structure in the axial direction.

[0008] According to a cylinder welding positioning tool provided by the utility model, an upper positioning block is arranged on the axial positioning plate; the upper positioning block is located above one of the support plates; and a locking piece capable of approaching or moving away from the support plate is arranged on the upper positioning block.

[0009] According to a cylinder welding positioning tool provided by the utility model, a lateral positioning block is arranged on the bottom plate; a second positioning groove matching the shape of the oil circuit bracket of the cylinder structure is arranged on the top of the lateral positioning block; the spacing between the two lateral positioning blocks is greater than or equal to the diameter of the cylinder structure.

[0010] According to a cylinder welding positioning tool provided by the utility model, in the axial direction, a plurality of installation positions for installing the lateral positioning blocks are arranged on the base plate; or, the lateral positioning blocks are movably installed on the base plate in the axial direction.

[0011] According to the oil cylinder welding positioning tool provided by the utility model, the positioning reference seat is provided with a mounting hole; the positioning pin is movably installed in the mounting hole.

[0012] According to the oil cylinder welding positioning tool provided by the utility model, the positioning pin is provided with an external thread, and the mounting hole is provided with an internal thread matching the external thread.

[0013] According to a cylinder welding positioning tool provided by the utility model, the positioning pin is slidably fitted in the mounting hole; an elastic member is arranged between the positioning pin and the positioning reference seat, and the elastic force applied by the elastic member to the positioning pin is directed toward the cylinder structure.

[0014] According to a cylinder welding positioning tool provided by the utility model, the first positioning groove is a V-shaped groove, and the groove angle of the first positioning groove is greater than or equal to 90 degrees.

[0015] According to the oil cylinder welding positioning tool provided by the utility model, the bottom plate has an elongated hole between the support plates; the width of the elongated hole is greater than or equal to the diameter of the cylinder structure.

[0016] The oil cylinder welding positioning tool provided by the utility model can stably support the cylinder structure in the axial direction through the structural design of the positioning reference seat and the support plate, thereby avoiding the problem of difficult positioning caused by the shape of the cylinder. Among them, the positioning pin is perpendicular to the axial direction and can be inserted into the oil nozzle of the cylinder structure to achieve precise positioning of the angle of the cylinder structure. At least two support plates are arranged at intervals, and the first positioning groove facing upward in the direction of the notch can achieve reliable support and limitation of the cylindrical cylinder structure. Through the design of the above-mentioned oil cylinder welding positioning tool, it is possible to achieve rapid and accurate positioning of the cylinder structure, thereby reducing the difficulty of positioning the cylinder structure and effectively improving the welding accuracy and efficiency in the oil cylinder production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is one of the structural schematic diagrams of the oil cylinder welding positioning tooling provided by the utility model;

[0019] Figure 2 This is the second structural schematic diagram of the oil cylinder welding positioning tooling provided by the utility model;

[0020] Figure 3 It is a cross-sectional structural schematic diagram of a positioning reference seat of a cylinder welding positioning tool provided by the utility model;

[0021] Reference numerals:

[0022] 100, bottom plate; 110, positioning reference seat; 111, positioning pin; 112, mounting hole; 113, elastic member; 120, support plate; 121, first positioning groove; 130, axial positioning plate; 131, upper positioning block; 132, locking member; 140, lateral positioning block; 141, second positioning groove; 150, elongated hole; 200, cylinder structure; 201, oil nozzle; 202, mounting plate; 203, oil circuit bracket. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0026] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean 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, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] Combine the following Figure 1-Figure 3 The specific implementation manner of the oil cylinder welding positioning tool of the utility model is described.

[0028] The oil nozzle 201 of the cylinder structure 200 is the oil inlet and outlet of the oil cylinder, the mounting plate 202 is used to provide a mounting base for some parts of the oil cylinder (such as valves), and the oil circuit bracket 203 is used to set up the oil circuit of the oil cylinder. During the manual welding process of the oil nozzle 201, the mounting plate 202, the oil circuit bracket 203 and other parts of the cylinder structure 200, it is difficult to ensure the reliable positioning of the cylinder structure 200 during the manual welding operation, which not only has low work efficiency, but also often has difficulty in ensuring welding accuracy. The utility model provides a cylinder welding positioning tool, which reduces the positioning difficulty of the cylinder structure 200 and improves the welding accuracy and efficiency in the production process of the cylinder.

[0029] like Figure 1 and Figure 2 As shown, the utility model provides a cylinder welding positioning tool, including a base plate 100; a positioning reference seat 110 and at least two spaced support plates 120 are arranged on the base plate 100; the support plate 120 is provided with a first positioning groove 121, the notch direction of the first positioning groove 121 is facing upward, and the first positioning grooves 121 of any two support plates 120 are aligned with each other in the axial direction; the positioning reference seat 110 is arranged on one side of the support plate 120, and the positioning reference seat 110 is provided with a positioning pin 111, and the positioning pin 111 is perpendicular to the axial direction; when the cylinder structure 200 is positioned on the cylinder welding positioning tool, the axial direction is parallel to the length direction of the cylinder structure, the cylinder structure 200 is supported on the first positioning groove 121, and the positioning pin 111 is inserted into the oil nozzle 201 of the cylinder structure 200.

[0030] The above-mentioned oil cylinder welding positioning fixture ensures that the cylinder structure 200 is stably supported in the axial direction through the structural design of the positioning reference seat 110 and the support plate 120. This design effectively solves the positioning difficulty problem caused by the cylindrical shape of the cylinder structure 200, thereby reducing the positioning difficulty of the cylinder structure 200 and effectively improving the welding accuracy and efficiency in the oil cylinder production process. Specifically, the positioning pin 111 is perpendicular to the axial direction and can be inserted into the oil nozzle 201 of the cylinder structure 200 to achieve precise positioning of the angle of the cylinder structure 200. In addition, at least two spaced support plates 120 realize reliable support and limiting of the cylindrical cylinder structure 200 through the first positioning groove 121 facing upward in the notch direction.

[0031] In order to further improve the performance of the oil cylinder welding positioning tooling, the notch shape of the first positioning groove 121 on the support plate 120 is preferably adjustable to adapt to cylinder structures 200 of different sizes. For example, the support plate 120 can be divided into a base part installed on the base plate 100 and a notch part installed on the base part. The first positioning groove 121 is formed in the notch part. By replacing the notch part, the notch shape can be adjusted. In addition, an adjustment device can be set on the positioning reference seat 110 to adjust the position of the positioning pin 111 according to actual needs, thereby realizing fast and accurate positioning of different types of oil cylinders.

[0032] Furthermore, in order to improve the versatility of the oil cylinder welding positioning tool, the positioning pin 111 can be designed to be replaceable to adapt to different types of oil cylinders. At the same time, the support plate 120 and the positioning reference seat 110 can also adopt a modular design, which is convenient for combination and adjustment and replacement according to actual needs, so that the oil cylinder welding positioning tool can not only realize the rapid and accurate positioning of the cylinder structure 200, but also adapt to oil cylinders of different sizes and types, thereby further improving the welding accuracy and efficiency in the oil cylinder production process.

[0033] According to a cylinder welding positioning fixture provided by the utility model, an axial positioning plate 130 is provided on the bottom plate 100; when the cylinder structure 200 is positioned on the cylinder welding positioning fixture, the axial positioning plate 130 stops at one end of the cylinder structure 200 in the axial direction. Specifically, this embodiment provides an implementation method in which the axial positioning plate 130 stops at one end of the cylinder structure 200 in the axial direction when the cylinder structure 200 is positioned on the cylinder welding positioning fixture.

[0034] The axial positioning plate 130 achieves accurate axial positioning of the cylinder structure 200 by contacting one end of the cylinder structure 200. The stopping effect of the axial positioning plate 130 can effectively prevent the cylinder structure 200 from being displaced during the welding process.

[0035] Preferably, the axial positioning plate 130 can be adjusted according to cylinder structures 200 of different sizes to meet the production requirements of oil cylinders of different specifications. This can improve the versatility and flexibility of the tooling. For example, a plurality of mounting positions for the axial positioning plate 130 can be set on the base plate 100, and the distance between the axial positioning plate 130 and the support plate 120 can be adjusted by replacing the mounting positions.

[0036] According to the oil cylinder welding positioning tool provided by the utility model, an upper positioning block 131 is provided on the axial positioning plate 130; the upper positioning block 131 is located above one of the support plates 120; and a locking member 132 capable of approaching or moving away from the support plate 120 is provided on the upper positioning block 131. Specifically, this embodiment provides an implementation method that can lock one end of the cylinder structure 200 through the locking member 132 and the support plate 120.

[0037] When the cylinder structure 200 is arranged on the oil cylinder welding positioning fixture, the axial positioning plate 130 stops at the end of the cylinder structure 200, and the upper positioning block 131 arranged on the axial positioning plate 130 is located above the cylinder structure 200. By adjusting the locking member 132 to be close to the support plate 120 in the vertical direction, not only the clamping positioning of the end of the cylinder structure 200 can be achieved, but also Figure 1 and Figure 2 As shown, the mounting plate 202 of the cylinder structure 200 can also be locked onto the cylinder structure 200 , so that the staff can weld and fix the mounting plate 202 and the cylinder structure 200 .

[0038] The specific structure of the locking member 132 can be set according to the requirements. The locking member 132 can be a threaded locking member 132, such as Figure 1 and 2 The two bolts shown in the figure are used to fix the parts by adjusting the threads. This locking member 132 has the advantages of simple structure, easy disassembly and replacement, etc. The locking member 132 can be an elastic locking member 132, and the locking member 132 is fixed by an elastic material, which can provide an elastic locking force.

[0039] According to a cylinder welding positioning tool provided by the utility model, a lateral positioning block 140 is provided on the bottom plate 100; a second positioning groove 141 matching the shape of the oil circuit bracket 203 of the cylinder structure 200 is provided on the top of the lateral positioning block 140; and the spacing between the two lateral positioning blocks is greater than or equal to the diameter of the cylinder structure 200. Specifically, this embodiment provides an implementation method that can locate the relative position of the oil circuit bracket 203 and the cylinder structure 200 through the lateral positioning block 140.

[0040] According to the above embodiment, during the welding process, the oil circuit bracket 203 can be accurately positioned and fixed on the cylinder structure 200. Specifically, the lateral positioning block 140 on the bottom plate 100 can be used to limit the horizontal movement of the cylinder structure 200, and the second positioning groove 141 on the top of the lateral positioning block 140 is used to match the shape of the oil circuit bracket 203, thereby helping the oil circuit bracket 203 to locate its relative position with the cylinder structure 200. In order to further improve the welding quality, a plurality of lateral positioning blocks 140 can be provided on the bottom plate 100, preferably two lateral positioning blocks 140 with opposite positions are provided, such as Figure 1 and Figure 2 As shown, supplementary limiting functions are provided on both sides of the cylinder structure 200 to prevent the cylinder structure 200 from being separated from the first positioning groove 121 .

[0041] Further, according to a cylinder welding positioning tool provided by the utility model, in the above-mentioned axial direction, a plurality of installation positions for installing the side positioning blocks 140 are preferably provided on the base plate 100; or, the side positioning blocks 140 are movably installed on the base plate 100 in the axial direction.

[0042] Specifically, the present embodiment provides an implementation method in which the position of the lateral positioning block 140 is adjustable. A plurality of mounting positions for mounting the lateral positioning block 140 are provided on the base plate 100. According to the cylinder structure 200 of different sizes and shapes, the mounting position at a suitable position can be selected to install the lateral positioning block 140. On the other hand, the lateral positioning block 140 can also be designed to be movably mounted on the base plate 100 in the axial direction. In this way, when the position of the lateral positioning block 140 needs to be adjusted, it only needs to be moved to a suitable position in the axial direction. For example, an axially extending slide rail can be provided on the base plate 100, and the lateral positioning block 140 can be slidably mounted on the slide rail, and a locking device can be provided to lock its position.

[0043] According to the oil cylinder welding positioning tool provided by the utility model, the positioning reference seat 110 is provided with a mounting hole 112; the positioning pin 111 is movably installed in the mounting hole 112. Specifically, this embodiment provides an implementation in which the positioning pin 111 is movable relative to the positioning reference seat 110.

[0044] By moving the positioning pin 111 to be installed in the mounting hole 112, the positioning pin 111 can be moved and adjusted relative to the positioning reference seat 110. In use, the cylinder structure 200 can be first positioned and supported on the support plate 120, and then the cylinder structure 200 can be rotated to a suitable angle, and then the positioning pin 111 can be manipulated to move relative to the mounting hole 112, so that the positioning pin 111 is close to the oil nozzle 201 of the cylinder structure 200 and forms a plug-in fit with the oil nozzle 201. The fit between the positioning pin 111 and the mounting hole 112 can include a sliding fit or a threaded fit.

[0045] According to a cylinder welding positioning tool provided by the utility model, the positioning pin 111 is preferably provided with an external thread, and an internal thread matching the external thread is provided in the mounting hole 112. Specifically, this embodiment provides a thread matching structure of the positioning pin 111 and the mounting hole 112. By rotating the positioning pin 111, the moving position of the positioning pin 111 relative to the mounting hole 112 can be accurately controlled under the action of the thread.

[0046] like Figure 3 As shown, according to a cylinder welding positioning tool provided by the utility model, the positioning pin 111 is slidably matched in the mounting hole 112; an elastic member 113 is provided between the positioning pin 111 and the positioning reference seat 110, and the elastic force applied by the elastic member 113 to the positioning pin 111 is directed toward the cylinder structure 200. Specifically, this embodiment provides an implementation method in which the positioning pin 111 automatically positions the oil nozzle 201 of the cylinder structure 200 under the action of the elastic member 113. The end of the positioning pin 111, that is, the end facing the cylinder structure 200, is preferably in an arc shape to reduce the difficulty of matching the positioning pin 111 with the oil nozzle 201 and prevent the positioning pin 111 from scratching the oil nozzle 201.

[0047] The sliding fit between the positioning pin 111 and the mounting hole 112 provides a guide for the movement of the positioning pin 111. In use, the staff can manually pull the positioning pin 111 to overcome the elastic force of the elastic member 113, thereby freeing the support space of the cylinder structure 200, so that the cylinder structure 200 can cooperate with the support plate 120 without being affected. When the cylinder structure 200 is rotated to a suitable angle, the positioning pin 111 is released, and under the action of the elastic member 113, the positioning end of the positioning pin 111 can automatically move toward the oil nozzle 201 and position and cooperate with the oil nozzle 201. In the case where the oil nozzle 201 of the cylinder structure 200 is a concave structure, the positioning pin 111 does not need to be manually operated, but the positioning pin 111 can be automatically pressed back by using the interference of the cylinder structure 200. When the cylinder structure 200 is rotated until the positioning pin 111 is aligned with the oil nozzle 201, the positioning pin 111 can automatically enter the oil nozzle 201 under the action of the elastic force to achieve automatic positioning.

[0048] According to a cylinder welding positioning tool provided by the utility model, the first positioning groove 121 can be an arc groove matching the outer peripheral surface of the cylinder structure 200, or preferably a V-shaped groove. Among them, the notch angle of the V-shaped first positioning groove 121 is preferably greater than or equal to 90 degrees. Specifically, this embodiment provides an implementation method of a specific structural design of the first positioning groove 121.

[0049] By setting the first positioning groove 121 as a V-shaped groove with a groove angle greater than or equal to 90 degrees, the first positioning groove 121 can be adapted to the support and positioning of cylinder structures 200 of various sizes and models.

[0050] According to the utility model, a cylinder welding positioning tool is provided. Figure 1 and Figure 2As shown, the bottom plate 100 preferably has an elongated hole 150 between the support plates 120. The width of the elongated hole 150 is preferably greater than or equal to the diameter of the cylinder structure 200. The elongated hole 150 can not only prevent welding waste from accumulating on the bottom plate 100 during welding, so that it can leak downward through the elongated hole 150, but also can perform processing operations under the cylinder structure 200 as needed when the bottom plate 100 is raised.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "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 embodiment. 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, without contradiction.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A cylinder welding positioning tool, characterized in that: comprising a bottom plate (100); The bottom plate (100) is provided with a positioning reference seat (110) and at least two support plates (120) arranged at intervals; The support plate (120) is provided with a first positioning groove (121), the notch direction of the first positioning groove (121) faces upward, and the first positioning grooves (121) of any two support plates (120) are aligned with each other in the axial direction; The positioning reference seat (110) is arranged on one side of the support plate (120), and the positioning reference seat (110) is provided with a positioning pin (111), and the positioning pin (111) is perpendicular to the axial direction; When the cylinder structure (200) is positioned on the oil cylinder welding positioning fixture, the axial direction is parallel to the length direction of the cylinder structure (200), the cylinder structure (200) is supported on the first positioning groove (121), and the positioning pin (111) is inserted into the oil nozzle (201) of the cylinder structure (200).

2. The oil cylinder welding positioning tool according to claim 1, characterized in that: An axial positioning plate (130) is provided on the bottom plate (100); When the cylinder structure (200) is positioned on the oil cylinder welding positioning fixture, the axial positioning plate (130) stops at one end of the cylinder structure (200) in the axial direction.

3. The oil cylinder welding positioning tool according to claim 2, characterized in that: An upper positioning block (131) is provided on the axial positioning plate (130); The upper positioning block (131) is located above one of the support plates (120); The upper positioning block (131) is provided with a locking piece (132) capable of moving closer to or farther away from the support plate (120).

4. The oil cylinder welding positioning tool according to claim 1, characterized in that: The bottom plate (100) is provided with a lateral positioning block (140); A second positioning groove (141) matching the shape of the oil channel bracket (203) of the cylinder structure (200) is provided on the top of the side positioning block (140); The distance between the two side positioning blocks is greater than or equal to the diameter of the cylinder structure (200).

5. The oil cylinder welding positioning tool according to claim 4, characterized in that: In the axial direction, the bottom plate (100) is provided with a plurality of mounting positions for mounting the lateral positioning blocks (140); Alternatively, the lateral positioning block (140) is movably mounted on the base plate (100) in the axial direction.

6. The oil cylinder welding positioning tool according to any one of claims 1 to 5, characterized in that: The positioning reference seat (110) is provided with a mounting hole (112); The positioning pin (111) is movably installed in the installation hole (112).

7. The oil cylinder welding positioning tool according to claim 6, characterized in that: The positioning pin (111) is provided with an external thread, and the mounting hole (112) is provided with an internal thread matching the external thread.

8. The oil cylinder welding positioning tool according to claim 6, characterized in that: The positioning pin (111) is slidably fitted into the mounting hole (112); An elastic member (113) is provided between the positioning pin (111) and the positioning reference seat (110), and the direction of the elastic force applied by the elastic member (113) to the positioning pin (111) is toward the cylinder structure (200).

9. The oil cylinder welding positioning tool according to any one of claims 1 to 5, characterized in that: The first positioning groove (121) is a V-shaped groove, and the groove angle of the first positioning groove (121) is greater than or equal to 90 degrees.

10. The oil cylinder welding positioning tool according to any one of claims 1 to 5, characterized in that: The bottom plate (100) has an elongated hole (150) between the support plates (120); The width of the elongated hole (150) is greater than or equal to the diameter of the cylinder structure (200).

Images