Assembling tool for welding liquid inlet pipe joint of oil cylinder

Abstract

The utility model relates to the technical field of welding assembly tools, in particular to an assembly tool for welding a liquid inlet pipe joint of an oil cylinder. The device comprises a connector used for being welded with a liquid inlet pipe, and further comprises a rotating device and a positioning and clamping device. The rotating device comprises a turntable and a driving piece for driving the turntable to rotate; the positioning and clamping device comprises a first positioning and clamping assembly, a second positioning and clamping assembly and a supporting assembly, the supporting assembly is fixedly installed on the top of the rotary disc and located on the outer edge of the rotary disc, the first positioning and clamping assembly is fixedly installed on the outer wall of the supporting assembly, and the second positioning and clamping assembly is fixedly installed on the top of the rotary disc. Through the positioning and clamping device, the liquid inlet pipe and the connector can be positioned and clamped respectively; through the rotating device, the liquid inlet pipe and the connector can be driven to rotate, so that the liquid inlet pipe and the connector are not limited by the welding position, and the welding efficiency and the welding quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding assembly tooling, in particular to an assembly tooling used for welding a fluid inlet pipe joint of an oil cylinder. Background Art

[0002] The columns and jacks in the hydraulic support mainly play a bearing role. The overall movement of the support is controlled by the stroke. The reliability, safety and fatigue life of each component of the hydraulic support will directly affect the overall performance of the product. The welding of the oil cylinder in the column jack is particularly critical, especially the welding of the oil cylinder liquid inlet pipe joint assembly, which is the main oil cylinder liquid passing structure.

[0003] The welding of the cylinder joint inlet pipe is a key step to ensure the normal operation of the hydraulic system. Its importance is mainly reflected in the following aspects:

[0004] (1) Ensure sealing: The quality of welding is directly related to the sealing performance of the hydraulic system. If the welding is not firm, it may cause hydraulic oil leakage, thus affecting the working efficiency and stability of the system.

[0005] (2) Withstand pressure: The hydraulic system will generate high pressure when working. The strength of the welding parts needs to be sufficient to withstand this pressure, otherwise it may break or fall off, causing a safety accident.

[0006] (3) Prevent pollution: Good welding can prevent pollutants from entering the hydraulic system, keep the hydraulic oil clean, and extend the service life of the system.

[0007] However, in the traditional assembly welding process of the liquid inlet pipe joint, the welding operation usually requires the welder to manually mark the assembly on the oil cylinder, fix the liquid inlet pipe joint on the outer circle of the oil cylinder, and change the angle for welding many times. This process is time-consuming and labor-intensive, and due to the interference of the welding position, there are position limitations, which may lead to unstable welding quality. Moreover, when the welder welds the liquid inlet pipe joint assembly, the manual marking and assembly welding may cause a certain amount of movement between the liquid inlet pipe and the joint, which in turn leads to unstable welding of the liquid inlet pipe joint assembly, reduced welding quality, reduced work efficiency and product qualification rate. Utility Model Content

[0008] 1. Technical issues to be resolved

[0009] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides an assembly tool for welding the liquid inlet pipe joint of the oil cylinder, which solves the problem that the current traditional assembly welding of the liquid inlet pipe joint requires the welder to manually mark and align the liquid inlet pipe joint on the oil cylinder, which has position limitations during welding and leads to reduced welding quality. Moreover, when the welder welds the liquid inlet pipe joint assembly, manual marking and aligning may cause a certain amount of movement between the liquid inlet pipe and the joint, thereby leading to unstable welding of the liquid inlet pipe joint assembly, reduced welding quality, and reduced work efficiency and product qualification rate. Technical problems.

[0010] (II) Technical solution

[0011] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0012] The utility model provides an assembly tool for welding a joint of a cylinder liquid inlet pipe, comprising a joint for welding with a liquid inlet pipe, and also comprising a rotating device and a positioning clamping device; the rotating device comprises a turntable and a driving member for driving the turntable to rotate; the positioning clamping device comprises a first positioning clamping component, a second positioning clamping component and a supporting component, the supporting component is fixedly mounted on the top of the turntable and is located at the outer edge of the turntable, the first positioning clamping component is fixedly mounted on the outer wall of the supporting component, the second positioning clamping component is fixedly mounted on the top of the turntable, the second positioning clamping component can clamp the joint, the first positioning clamping component makes the liquid inlet pipe cooperate with the joint, and the first positioning clamping component, the second positioning clamping component, the liquid inlet pipe, the stop of the joint and the axis of the turntable coincide.

[0013] Preferably, the supporting assembly comprises a hydraulic cylinder and a mounting plate, and the mounting plate is fixedly mounted on the top of the protruding end of the hydraulic cylinder; the first positioning clamping assembly comprises a positioning portion and a telescopic portion; one end of the telescopic portion is fixedly connected to the side wall of the mounting plate, and the other end is detachably connected to the positioning portion, and the positioning portion can be moved laterally along the telescopic portion through the telescopic portion; the hydraulic cylinder can drive the positioning portion and the telescopic portion to rise and fall to adapt to the liquid inlet pipes of different lengths.

[0014] Preferably, the positioning portion includes a positioning ring and a first T-shaped block; the positioning ring can be sleeved on the outer wall of the liquid inlet pipe and the first T-shaped block is fixedly installed on the outer wall of the positioning ring, and the end of the telescopic portion away from the mounting plate is provided with a first T-shaped groove matching with the first T-shaped block, the first T-shaped block and the first T-shaped groove are both vertically arranged and the top of the first T-shaped groove passes through the top of the telescopic portion, and the positioning ring can be inserted into the end of the telescopic portion away from the mounting plate through the cooperation of the first T-shaped block and the first T-shaped groove.

[0015] Preferably, the positioning portion comprises a positioning clamp; the positioning clamp is sleeved on the outer wall of the liquid inlet pipe and one end of the telescopic portion away from the mounting plate is detachably connected to the clamp by a bolt.

[0016] Preferably, the telescopic portion includes a sleeve and a movable plate; the movable plate is inserted into the sleeve, a second T-shaped groove is provided on the inner wall of the sleeve, a second T-shaped block corresponding to the second T-shaped groove is provided on the side wall of the movable plate, and the movable plate can move laterally along the sleeve in the sleeve through the cooperation of the second T-shaped block and the second T-shaped groove; the first T-shaped groove is opened at the end of the movable plate away from the sleeve.

[0017] Preferably, the first positioning clamping assembly also includes a first clamping portion and a mounting rod; the first clamping portion is fixedly mounted on the top of the fixed cylinder of the hydraulic cylinder through the mounting rod and the first clamping portion is located below the positioning portion, the liquid inlet pipe passes through the first clamping portion and the first clamping portion can clamp the liquid inlet pipe.

[0018] Preferably, the first clamping portion includes a first chuck and a plurality of first claws; the plurality of first claws are circumferentially arrayed on the top of the first chuck and the plurality of first claws can simultaneously move toward the axial direction of the first chuck to centrally clamp the liquid inlet tube; the ends of the plurality of first claws facing the liquid inlet tube are all arranged in an arc shape and the arcs of the plurality of first claws are all provided with a first buffer pad.

[0019] Preferably, the second positioning clamping assembly includes a second clamping portion; the second clamping portion is located below the first clamping portion, the bottom of the second clamping portion is fixedly connected to the top of the turntable, the joint is located inside the second clamping portion, and the second clamping portion can clamp and center the joint.

[0020] Preferably, the second clamping portion includes a second chuck and a plurality of second claws; the plurality of second claws are circumferentially arrayed on the top of the second chuck and the plurality of second claws can simultaneously move toward the axial direction of the second chuck, and a second buffer pad is provided at one end of the second claw facing the joint.

[0021] (III) Beneficial effects

[0022] The beneficial effects of the utility model are:

[0023] The utility model can realize the positioning and clamping of the liquid inlet pipe by setting the first positioning and clamping assembly, and can realize the positioning and clamping of the joint by setting the second positioning and clamping assembly. When the liquid inlet pipe and the joint are assembled, the joint is placed in the second positioning and clamping assembly, and the second positioning and clamping assembly positions and clamps the joint. The liquid inlet pipe is passed through the first positioning and clamping assembly to position the liquid inlet pipe, so that the axis of the liquid inlet pipe is consistent with the axis of the stop of the joint, which is convenient for matching with the stop of the joint. The liquid inlet pipe is positioned by the first positioning clamping assembly, so that when the liquid inlet pipe and the joint are welded, there is no need to manually mark the welding point between the liquid inlet pipe and the joint, making welding more convenient and improving welding work efficiency; at the same time, the liquid inlet pipe is clamped by the first positioning clamping assembly, which can prevent the liquid inlet pipe from moving, thereby preventing the unstable welding between the liquid inlet pipe and the joint from resulting in low welding quality and poor welding effect, thereby improving the qualified rate of the product; and, the turntable is driven to rotate by the driving member, thereby driving the first positioning clamping assembly and the second positioning clamping assembly to rotate, which can drive the liquid inlet pipe and the joint to rotate, thereby realizing annular welding of the liquid inlet pipe and the joint, so as not to be limited by the welding position, thereby improving welding efficiency and welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an assembly tool for welding a fluid inlet pipe joint of an oil cylinder according to the utility model;

[0025] Figure 2 It is a schematic diagram of the overall three-dimensional structure of a rotating device of an assembly tool for welding a fluid inlet pipe joint of an oil cylinder according to the utility model;

[0026] Figure 3 It is a schematic diagram of the overall three-dimensional disassembly structure of the positioning part and the telescopic part of an assembly tool for welding a fluid inlet pipe joint of an oil cylinder according to the utility model;

[0027] Figure 4 It is a schematic diagram of the overall three-dimensional disassembled structure of the positioning part and the telescopic part of another embodiment of an assembly tool for welding a cylinder liquid inlet pipe joint of the utility model.

[0028] [Description of Reference Numerals]

[0029] 1: liquid inlet pipe; 2: joint; 3: rotating device; 31: turntable; 32: driving member; 4: positioning and clamping device; 41: first positioning and clamping assembly; 411: positioning part; 4111: positioning ring; 4112: first T-block; 4113: positioning clamp; 412: telescopic part; 4121: first T-slot; 4122: sleeve; 4123: moving plate; 4124: second T-slot; 4125: second T-block; 413: first clamping part; 4131: first chuck; 4132: first claw; 414: mounting rod; 42: second positioning and clamping assembly; 421: second clamping part; 4211: second chuck; 4212: second claw; 43: supporting assembly; 431: hydraulic cylinder; 432: mounting plate. DETAILED DESCRIPTION

[0030] 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.

[0031] Embodiment 1

[0032] like Figure 1-Figure 3 As shown, an assembly tool for welding a joint 2 of a fluid inlet pipe 1 of a cylinder according to this embodiment includes a joint 2 for welding with the fluid inlet pipe 1 , a rotating device 3 and a positioning clamping device 4 .

[0033] Specifically, the rotating device 3 includes a turntable 31 and a driving member 32 for driving the turntable 31 to rotate; the positioning and clamping device 4 includes a first positioning and clamping assembly 41, a second positioning and clamping assembly 42 and a supporting assembly 43, the supporting assembly 43 is fixedly mounted on the top of the turntable 31 and is located at the outer edge of the turntable 31, the first positioning and clamping assembly 41 is fixedly mounted on the outer wall of the supporting assembly 43, the second positioning and clamping assembly 42 is fixedly mounted on the top of the turntable 31, the second positioning and clamping assembly 42 can clamp the joint 2, the first positioning and clamping assembly 41 makes the liquid inlet pipe 1 cooperate with the joint 2, and the first positioning and clamping assembly 41, the second positioning and clamping assembly 42, the liquid inlet pipe 1, the stopper of the joint 2 and the axis of the turntable 31 coincide. By setting the first positioning and clamping assembly 41, the positioning and clamping of the liquid inlet pipe 1 can be achieved, and by setting the second positioning and clamping assembly 42, the positioning and clamping of the joint 2 can be achieved. When the liquid inlet pipe 1 and the connector 2 are assembled, the connector 2 is placed in the second positioning clamping assembly 42, the second positioning clamping assembly 42 positions and clamps the connector 2, and the liquid inlet pipe 1 is passed through the first positioning clamping assembly 41 to position the liquid inlet pipe 1 so that the axis of the liquid inlet pipe 1 is consistent with the axis of the stop of the connector 2, which is convenient for matching with the stop of the connector 2. The liquid inlet pipe 1 is positioned by the first positioning clamping assembly 41, so that when the liquid inlet pipe 1 and the joint 2 are welded, there is no need to manually mark the welding point between the liquid inlet pipe 1 and the joint 2, which makes welding more convenient and improves the welding work efficiency; at the same time, the liquid inlet pipe 1 is clamped by the first positioning clamping assembly 41, which can prevent the liquid inlet pipe 1 from moving, thereby preventing the unstable welding between the liquid inlet pipe 1 and the joint 2 resulting in low welding quality and poor welding effect, thereby improving the qualified rate of the product; and, the turntable 31 is driven to rotate by the driving member 32, thereby driving the first positioning clamping assembly 41 and the second positioning clamping assembly 42 to rotate, which can drive the liquid inlet pipe 1 and the joint 2 to rotate, thereby realizing the annular welding of the liquid inlet pipe 1 and the joint 2, so as not to be limited by the welding position, thereby improving the welding efficiency and welding quality.

[0034] Furthermore, the support assembly 43 includes a hydraulic cylinder 431 and a mounting plate 432, and the mounting plate 432 is fixedly mounted on the top of the extended end of the hydraulic cylinder 431; the first positioning clamping assembly 41 includes a positioning portion 411 and a telescopic portion 412; one end of the telescopic portion 412 is fixedly connected to the side wall of the mounting plate 432, and the other end is detachably connected to the positioning portion 411, and the positioning portion 411 can be moved laterally along the telescopic portion 412 through the telescopic portion 412. By setting the positioning part 411 and the telescopic part 412, it is possible to realize the positioning of the liquid inlet pipe 1, and by the telescopic part 412 being detachably connected to the positioning part 411, it is possible to realize the replacement of the positioning part 411 for liquid inlet pipes 1 of different specifications. Since the outer diameters of liquid inlet pipes 1 of different specifications are different, when replacing different positioning parts 411, in order to make the axis of the liquid inlet pipe 1 always coincide with the axis of the turntable 31, the telescopic part 412 is set to be able to extend or retract different lengths for liquid inlet pipes 1 of different specifications, so as to adapt to the positioning of liquid inlet pipes 1 of different specifications. The hydraulic cylinder 431 can drive the positioning part 411 and the telescopic part 412 to rise and fall to adapt to liquid inlet pipes 1 of different lengths. Since the lengths of the liquid inlet pipes 1 are different, the hydraulic cylinder 431 is set to realize the vertical lifting of the positioning part 411 and the telescopic part 412, so as to realize the welding of liquid inlet pipes 1 of different lengths and the joint 2.

[0035] Specifically, Figure 3 As shown, the positioning part 411 includes a positioning clamp 4113; the positioning clamp 4113 is sleeved on the outer wall of the liquid inlet pipe 1 and the end of the telescopic part 412 away from the mounting plate 432 is detachably connected to the clamp by a bolt. When replacing the positioning clamp 4113, it is only necessary to remove the positioning clamp 4113 and install a positioning clamp 4113 of the same specification as the liquid inlet pipe 1 on the end of the telescopic part 412 to complete the replacement of the positioning clamp 4113, which is more convenient and easier to operate.

[0036] More specifically, the telescopic portion 412 includes a sleeve 4122 and a movable plate 4123; the movable plate 4123 is inserted into the sleeve 4122, a second T-shaped groove 4124 is provided on the inner wall of the sleeve 4122, and a second T-shaped block 4125 corresponding to the second T-shaped groove 4124 is provided on the side wall of the movable plate 4123. The movable plate 4123 can be moved along the sleeve in the sleeve 4122 through the cooperation of the second T-shaped block 4125 and the second T-shaped groove 4124. The first T-shaped groove 4121 is provided at one end of the movable plate 4123 away from the sleeve 4122, which can limit the moving direction of the movable plate 4123 in the sleeve 4122. In addition, it is explained here that relatively adaptive grooves and protrusions are provided on the sleeve 4122 and the movable plate 4123, so as to limit the moving distance of the movable plate 4123 and prevent the movable plate 4123 from escaping from the sleeve 4122. By providing the sleeve 4122 and the movable plate 4123, the movable plate 4123 can be moved in the sleeve 4122, so that when the positioning rings 4111 of different specifications are replaced, the outer diameters of the positioning rings 4111 of different specifications can be adapted, thereby changing the length of the telescopic portion 412.

[0037] Furthermore, the first positioning and clamping assembly 41 also includes a first clamping portion 413 and a mounting rod 414; the first clamping portion 413 is fixedly mounted on the top of the fixed cylinder of the hydraulic cylinder 431 through the mounting rod 414 and the first clamping portion 413 is located below the positioning portion 411, the liquid inlet pipe 1 passes through the first clamping portion 413 and the first clamping portion 413 can clamp the liquid inlet pipe 1, thereby clamping the liquid inlet pipe 1 to prevent the liquid inlet pipe 1 from moving when being welded to the joint 2, thereby preventing the quality of the welding between the liquid inlet pipe 1 and the joint 2 from being poor.

[0038] Specifically, the first clamping portion 413 includes a first chuck 4131 and a plurality of first claws 4132; the plurality of first claws 4132 are circumferentially arrayed on the top of the first chuck 4131 and the plurality of first claws 4132 can simultaneously move toward the axial direction of the first chuck 4131 to center and clamp the liquid inlet pipe 1. The liquid inlet pipe 1 can be clamped by providing a chuck and a plurality of claws, and the plurality of first claws 4132 can make it more stable and more secure when clamping the liquid inlet pipe 1, and can also assist in centering. Preferably, the ends of the plurality of first claws 4132 facing the liquid inlet pipe 1 are all set to be arc-shaped and the arcs of the plurality of first claws 4132 are all provided with first buffer pads. By setting the end of the first claw 4132 facing the liquid inlet tube 1 into an arc shape, it can adapt to the outer wall shape of the liquid inlet tube 1, making it more stable when clamping the liquid inlet tube 1. By setting a buffer pad at the arc of the first claw 4132, the first claw 4132 can provide a buffer force to the liquid inlet tube 1 when clamping the liquid inlet tube 1, and at the same time protect the liquid inlet tube 1, avoid the strong rigidity between the liquid inlet tube 1 and the first claw 4132, and avoid damage to the outer wall of the liquid inlet tube 1.

[0039] Furthermore, the second positioning clamping assembly 42 includes a second clamping portion 421; the second clamping portion 421 is located below the first clamping portion 413, the bottom of the second clamping portion 421 is fixedly connected to the top of the turntable 31, the connector 2 is located inside the second clamping portion 421, and the second clamping portion 421 can clamp the connector 2 to achieve centering of the position of the connector 2, and when the liquid inlet pipe 1 and the connector 2 are welded, the second clamping portion 421 can clamp more stably to keep the connector 2 stationary.

[0040] Specifically, the second clamping portion 421 includes a second chuck 4211 and a plurality of second claws 4212; the plurality of second claws 4212 are circumferentially arrayed on the top of the second chuck 4211 and the plurality of second claws can simultaneously move toward the axial direction of the second chuck 4211, and a second buffer pad is provided at one end of the second claw 4212 facing the joint 2. By providing the second chuck 4211 and the second claw 4212, the joint 2 can be stably clamped and centered, and the second claw 4212 can move simultaneously to clamp the joint 2 in the center, so that the axis of the stop of the joint 2 coincides with the axis of the turntable 31. Moreover, by providing the second buffer pad, the second claw 4212 can provide a buffer force to the joint 2 when clamping the joint 2 in the center, and protect the outer wall of the joint 2 from damage.

[0041] Through the above structure, the working principle of an assembly tool for welding the joint 2 of the oil cylinder inlet pipe 1 of this embodiment is as follows:

[0042] like Figure 1As shown, first assemble the device, and then install the positioning ring 4111 of the same specification as the liquid inlet pipe 1 to be welded on the movable plate 4123. After everything is installed, place the joint 2 in the second chuck 4211, drive the multiple second claws 4212 to center and clamp the joint 2, and then pass the liquid inlet pipe 1 through the positioning ring 4111 and the first chuck 4131 in turn until it contacts the stopper of the joint 2, and then drive the multiple first claws 4132 to clamp the liquid inlet pipe 1 so that the axes of the stoppers of the liquid inlet pipe 1 and the joint 2 coincide. After the positions of the liquid inlet pipe 1 and the joint 2 are stable, a handheld welding gun or an automatic welding gun can be used to perform annular welding on the liquid inlet pipe 1 and the joint 2 to complete the assembly of the liquid inlet pipe 1 and the joint 2. After welding is completed, the first clamping claws 4132 and the second clamping claws 4212 are driven to move away from the liquid inlet pipe 1 and the joint 2, so that the liquid inlet pipe 1 and the joint 2 can be separated therefrom, so as to take out the welded joint 2 and the liquid inlet pipe 1. When welding the next liquid inlet pipe 1 and the joint 2 of different specifications, it is only necessary to replace the positioning ring 4111 of the same specification and then repeat the above process, which will not be described in detail.

[0043] Embodiment 2

[0044] like Figure 4 As shown, different from the first embodiment, the positioning portion 411 in this embodiment includes a positioning ring 4111 and a first T-shaped block 4112; the positioning ring 4111 can be sleeved on the outer wall of the liquid inlet pipe 1 and the first T-shaped block 4112 is fixedly installed on the outer wall of the positioning ring 4111, and the end of the telescopic portion 412 away from the mounting plate 432 is provided with a first T-shaped groove 4121 that cooperates with the first T-shaped block 4112, the first T-shaped block 4112 and the first T-shaped groove 4121 are both vertically arranged and the top of the first T-shaped groove 4121 passes through the top of the telescopic portion 412, and the positioning ring 4111 can be inserted into the end of the telescopic portion 412 away from the mounting plate 432 through the cooperation of the first T-shaped block 4112 and the first T-shaped groove 4121. By setting the positioning ring 4111 and the first T-shaped block 4112, the telescopic part 412 can be detachably installed, the structure is simple, the installation operation is convenient, and the positioning ring 4111 of different specifications can be replaced more quickly, thereby improving the work efficiency. It should be noted that it is not limited to setting the first T-shaped block 4112 on the positioning ring 4111 and the telescopic part 412 having the first T-shaped groove 4121 matched with the first T-shaped block 4112. The positioning ring 4111 can also be provided with the first T-shaped groove 4121, and the telescopic part 412 can be provided with the first T-shaped block 4112 matched with the first T-shaped groove 4121, or other clamping structures.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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. An assembly tool for welding a joint of a fluid inlet pipe of a cylinder, comprising a joint (2) for welding to a fluid inlet pipe (1), characterized in that: It also includes a rotating device (3) and a positioning clamping device (4); The rotating device (3) comprises a rotating disk (31) and a driving member (32) for driving the rotating disk (31) to rotate; The positioning and clamping device (4) comprises a first positioning and clamping component (41), a second positioning and clamping component (42) and a supporting component (43); the supporting component (43) is fixedly mounted on the top of the turntable (31) and is located at the outer edge of the turntable (31); the first positioning and clamping component (41) is fixedly mounted on the outer wall of the supporting component (43); the second positioning and clamping component (42) is fixedly mounted on the top of the turntable (31); the second positioning and clamping component (42) is capable of clamping the joint (2); the first positioning and clamping component (41) enables the liquid inlet pipe (1) to cooperate with the joint (2); and the first positioning and clamping component (41), the second positioning and clamping component (42), the liquid inlet pipe (1), the stopper of the joint (2) and the axis of the turntable (31) coincide with each other.

2. An assembly tool for welding a cylinder liquid inlet pipe joint according to claim 1, characterized in that: The support assembly (43) comprises a hydraulic cylinder (431) and a mounting plate (432), wherein the mounting plate (432) is fixedly mounted on the top of the protruding end of the hydraulic cylinder (431); The first positioning clamping assembly (41) comprises a positioning portion (411) and a telescopic portion (412); One end of the telescopic portion (412) is fixedly connected to the side wall of the mounting plate (432), and the other end is detachably connected to the positioning portion (411), and the positioning portion (411) can move laterally along the telescopic portion (412) through the telescopic portion (412); The hydraulic cylinder (431) can drive the positioning portion (411) and the telescopic portion (412) to rise and fall, so as to adapt to the liquid inlet pipes (1) of different lengths.

3. An assembly tool for welding a cylinder liquid inlet pipe joint as claimed in claim 2, characterized in that: The positioning portion (411) comprises a positioning ring (4111) and a first T-shaped block (4112); The positioning ring (4111) can be sleeved on the outer wall of the liquid inlet pipe (1) and the first T-shaped block (4112) is fixedly installed on the outer wall of the positioning ring (4111); the end of the telescopic part (412) away from the mounting plate (432) is provided with a first T-shaped groove (4121) matched with the first T-shaped block (4112); the first T-shaped block (4112) and the first T-shaped groove (4121) are both vertically arranged and the top of the first T-shaped groove (4121) passes through the top of the telescopic part (412); the positioning ring (4111) can be inserted into the end of the telescopic part (412) away from the mounting plate (432) through the cooperation of the first T-shaped block (4112) and the first T-shaped groove (4121).

4. An assembly tool for welding a cylinder liquid inlet pipe joint as claimed in claim 2, characterized in that: The positioning portion (411) includes a positioning clamp (4113); The positioning clamp (4113) is sleeved on the outer wall of the liquid inlet pipe (1), and one end of the telescopic portion (412) away from the mounting plate (432) is detachably connected to the clamp via bolts.

5. The assembly tool for welding the oil cylinder liquid inlet pipe joint according to claim 3, characterized in that: The telescopic portion (412) includes a sleeve (4122) and a movable plate (4123); The movable plate (4123) is inserted into the sleeve (4122), a second T-shaped groove (4124) is provided on the inner wall of the sleeve (4122), a second T-shaped block (4125) corresponding to the second T-shaped groove (4124) is provided on the side wall of the movable plate (4123), and the movable plate (4123) can move in the sleeve (4122) along the lateral direction of the sleeve (4122) through the cooperation between the second T-shaped block (4125) and the second T-shaped groove (4124); The first T-shaped groove (4121) is opened at an end of the movable plate (4123) away from the sleeve (4122).

6. An assembly tool for welding a cylinder liquid inlet pipe joint as claimed in claim 2, characterized in that: The first positioning clamping assembly (41) further comprises a first clamping portion (413) and a mounting rod (414); The first clamping portion (413) is fixedly mounted on the top of the fixed cylinder of the hydraulic cylinder (431) via the mounting rod (414), and the first clamping portion (413) is located below the positioning portion (411); the liquid inlet pipe (1) passes through the first clamping portion (413), and the first clamping portion (413) is capable of clamping the liquid inlet pipe (1).

7. An assembly tool for welding a cylinder liquid inlet pipe joint according to claim 6, characterized in that: The first clamping portion (413) comprises a first chuck (4131) and a plurality of first clamping claws (4132); The plurality of first clamping claws (4132) are circumferentially arrayed on the top of the first chuck (4131), and the plurality of first clamping claws (4132) can simultaneously move toward the axial direction of the first chuck (4131) to centrally clamp the liquid inlet pipe (1); One end of each of the plurality of first claws (4132) facing the liquid inlet pipe (1) is arranged in an arc shape, and a first buffer pad is arranged at the arc-shaped portion of each of the plurality of first claws (4132).

8. An assembly tool for welding a cylinder liquid inlet pipe joint as claimed in claim 7, characterized in that: The second positioning and clamping assembly (42) comprises a second clamping portion (421); The second clamping portion (421) is located below the first clamping portion (413), the bottom of the second clamping portion (421) is fixedly connected to the top of the turntable (31), the joint (2) is located inside the second clamping portion (421), and the second clamping portion (421) is capable of clamping and centering the joint (2).

9. An assembly tool for welding a cylinder liquid inlet pipe joint as claimed in claim 8, characterized in that: The second clamping portion (421) comprises a second chuck (4211) and a plurality of second clamping claws (4212); The multiple second claws (4212) are circumferentially arrayed at the top of the second chuck (4211) and the multiple second claws can move simultaneously toward the axial direction of the second chuck (4211), and a second buffer pad is provided at one end of the second claw (4212) facing the joint (2).

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