Fixing device for welding

Abstract

The utility model provides a welding fixing device which comprises a rack assembly and two clamping mechanisms, and the rack assembly comprises a base frame, two supporting frames and two storage racks; wherein the two supporting frames are both arranged on the upper surface of the base frame; according to the pipeline welding device, the second hydraulic cylinder is used for driving the supporting frame to drive the storage rack to move up and down, so that the height of the storage rack is adjusted according to actual requirements, and then the two clamping mechanisms are used for being matched with the two storage racks to fix two pipelines needing to be welded respectively; then the second hydraulic cylinder is used for driving the supporting frame again, the storage rack is used for driving the unfixed pipeline to move, and then the first hydraulic cylinder is used for driving the storage rack to align the joints of the two pipelines, so that manual alignment operation is not needed, the operation mode is simplified, and the fixing device has a lifting function; and therefore, the welding operation of pipelines with different heights is suitable, and the construction difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to a fixing device, in particular to a fixing device for welding, and belongs to the technical field of pipeline welding. Background Art

[0002] Pipeline welding is a process of heating two or more pipes with heat energy to make them melt and then connecting them under suitable conditions.

[0003] When traditional pipelines are welded and fixed, it is usually necessary to manually align the two pipelines first, and then use a fixing device to fix the pipelines. The operation method is relatively inconvenient, and when the height difference between the pipeline and the ground is large, it is necessary to manually lift the unfixed pipeline, which affects the construction difficulty. Therefore, a welding fixing device is proposed. Utility Model Content

[0004] In view of this, the utility model provides a welding fixture to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial choice.

[0005] The technical solution of the embodiment of the utility model is implemented as follows: a welding fixture includes a frame assembly and two clamping mechanisms, wherein the frame assembly includes a base frame, two support frames and two storage racks;

[0006] Wherein, the two support frames are both arranged on the upper surface of the base frame, one of the storage racks is fixedly connected to the upper surface of one of the support frames, the other storage rack is slidably connected to the upper surface of the other support frame, the two clamping mechanisms are respectively fixedly connected to the tops of the two storage racks, an extension support mechanism is fixed on the upper surface of one of the support frames, two first hydraulic cylinders are symmetrically installed on one side of the extension support mechanism, the piston rods of the two first hydraulic cylinders are both fixedly connected to one side of the storage rack, four second hydraulic cylinders are symmetrically fixedly connected to the bottom of the inner side wall of the base frame, and the piston rods of the four second hydraulic cylinders are respectively fixedly connected to the bottoms of the two support frames;

[0007] Wherein, the clamping mechanism is used to cooperate with the storage rack to fix the pipe that needs to be welded;

[0008] Wherein, the first hydraulic cylinder is used to drive the rack to cooperate with the clamping mechanism to dock the fixed pipe;

[0009] Wherein, the second hydraulic cylinder is used to drive the support frame to adjust the height of the storage rack;

[0010] Wherein, the extended support mechanism is used to assist the clamping mechanism and the storage rack in supporting the pipeline.

[0011] Further preferably, the two clamping mechanisms each include a connecting frame, a clamping plate, a threaded rod and a sliding groove;

[0012] The bottom of the connecting frame is fixedly connected to the top of the storage rack, the sliding groove is provided on the inner side wall of the connecting frame, and the outer side wall of the clamping plate is slidably connected to the inner side wall of the sliding groove.

[0013] Further preferably, the outer side wall of the threaded rod is threadedly connected to the top of the inner side wall of the connecting frame, and the bottom of the threaded rod is rotatably connected to the middle of the upper surface of the clamping plate through a bearing.

[0014] Further preferably, a handle is fixedly connected to the top of the threaded rod.

[0015] Further preferably, the extended support mechanism comprises an extended bracket, a plurality of balls and three support pillows;

[0016] Among them, the extension bracket is fixedly connected to the upper surface of one of the support frames, several of the ball bearings are rotatably connected to the inner wall of the extension bracket, the three support pillows are respectively fixedly connected to one side of the extension bracket and the two storage racks, and the two first hydraulic cylinders are installed on one side of the extension bracket.

[0017] Further preferably, a slider is fixedly connected to the bottom of one of the storage racks, an outer side wall of the slider is slidably connected to an inner side wall of one of the support racks, and a storage groove is provided on one side of the upper surface of one of the support racks.

[0018] Further preferably, two guide rods are symmetrically fixedly connected between one side of the upper surface of one of the support frames and the extension bracket, and the outer side walls of the two guide rods are slidably connected to the inner side wall of one of the storage racks.

[0019] Further preferably, four rollers are symmetrically fixedly connected to the bottom of the base frame.

[0020] Since the embodiment of the utility model adopts the above technical scheme, it has the following advantages: the utility model uses the second hydraulic cylinder to drive the support frame to drive the storage rack to move up and down, so as to adjust the height of the storage rack according to actual needs, and then uses two clamping mechanisms to cooperate with the two storage racks to fix the two pipes to be welded respectively, and then uses the second hydraulic cylinder to drive the support frame again to use the storage rack to drive the unfixed pipe to move, and then uses the first hydraulic cylinder to drive the storage rack to align the interfaces of the two pipes, so that there is no need for manual alignment operation, which simplifies the operation method, and enables the fixing device to have a lifting function to be suitable for welding operations of pipes of different heights, thereby reducing the construction difficulty.

[0021] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural diagram of the utility model;

[0024] Figure 2 It is a schematic cross-sectional structure diagram of the utility model from a first viewing angle;

[0025] Figure 3 It is a cross-sectional structural schematic diagram of the utility model from a second viewing angle;

[0026] Figure 4 It is a cross-sectional structural schematic diagram of the connecting frame of the utility model;

[0027] Figure 5 It is an axonometric view of the base frame of the utility model.

[0028] Figure numerals: 1. frame assembly; 2. clamping mechanism; 3. first hydraulic cylinder; 4. extended support mechanism; 5. second hydraulic cylinder; 7. storage slot; 101. base frame; 102. support frame; 103. storage rack; 201. connecting frame; 202. clamping plate; 203. threaded rod; 204. slide groove; 401. extended bracket; 402. ball bearing; 403. support pillow; 61. handle; 62. roller; 63. guide rod; 64. slider. DETAILED DESCRIPTION

[0029] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0030] It should be noted that the terms "first", "second", "symmetrical", "array", etc. are only used to distinguish between description and position description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the definition of "first", "symmetrical", etc. can explicitly or implicitly include one or more of these features; similarly, when the number of certain features is not limited in the form of words such as "two" or "three", it should be noted that this feature also explicitly or implicitly includes one or more feature quantities.

[0031] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0032] like Figure 1-5 As shown, the embodiment of the utility model provides a fixing device for welding, including a frame assembly 1 and two clamping mechanisms 2, wherein the frame assembly 1 includes a base frame 101, two support frames 102 and two storage racks 103;

[0033] Among them, two support frames 102 are both arranged on the upper surface of the base frame 101, one storage rack 103 is fixedly connected to the upper surface of one support frame 102, and the other storage rack 103 is slidably connected to the upper surface of the other support frame 102. Two clamping mechanisms 2 are respectively fixedly connected to the tops of the two storage racks 103, and an extended support mechanism 4 is fixed on the upper surface of one support frame 102. Two first hydraulic cylinders 3 are symmetrically installed on one side of the extended support mechanism 4, and the piston rods of the two first hydraulic cylinders 3 are both fixedly connected to one side of the storage rack 103. Four second hydraulic cylinders 5 are symmetrically fixedly connected to the bottom of the inner side wall of the base frame 101, and the piston rods of the four second hydraulic cylinders 5 are respectively fixedly connected to the bottom of the two support frames 102;

[0034] The clamping mechanism 2 is used to cooperate with the storage rack 103 to fix the pipes that need to be welded;

[0035] The first hydraulic cylinder 3 is used to drive the rack 103 to cooperate with the clamping mechanism 2 to dock the fixed pipe;

[0036] The second hydraulic cylinder 5 is used to drive the support frame 102 to adjust the height of the storage rack 103;

[0037] The extended support mechanism 4 is used to assist the clamping mechanism 2 and the rack 103 in supporting the pipeline.

[0038] In one embodiment, the two clamping mechanisms 2 each include a connecting frame 201, a clamping plate 202, a threaded rod 203 and a sliding groove 204;

[0039] Among them, the bottom of the connecting frame 201 is fixedly connected to the top of the storage rack 103, the slide groove 204 is opened on the inner wall of the connecting frame 201, the outer wall of the clamping plate 202 is slidably connected to the inner wall of the slide groove 204, the outer wall of the threaded rod 203 is threadedly connected to the top of the inner wall of the connecting frame 201, the bottom of the threaded rod 203 is rotatably connected to the middle part of the upper surface of the clamping plate 202 through a bearing, and the top of the threaded rod 203 is fixedly connected with a handle 61. The threaded rod 203 is used to drive the clamping plate 202 to move by rotating the handle 61. The moving clamping plate 202 squeezes the top of the outer wall of the pipe to cooperate with the storage rack 103 to complete the fixing operation of the pipe, and the moving clamping plate 202 is guided by the set slide groove 204.

[0040] In one embodiment, the extension support mechanism 4 includes an extension bracket 401, a plurality of balls 402, and three support pillows 403;

[0041] Among them, the extension bracket 401 is fixedly connected to the upper surface of a support frame 102, a plurality of ball bearings 402 are rotatably connected to the inner wall of the extension bracket 401, three support pillows 403 are respectively fixedly connected to one side of the extension bracket 401 and two storage racks 103, and two first hydraulic cylinders 3 are installed on one side of the extension bracket 401. The friction between the pipeline and the extension bracket 401 is reduced by the ball bearings 402 so that the pipeline can slide smoothly in the extension bracket 401. The support pillows 403 are arranged to increase the contact area between the extension bracket 401 and the storage rack 103 and the pipeline.

[0042] In one embodiment, a slider 64 is fixedly connected to the bottom of a storage rack 103, and the outer wall of the slider 64 is slidably connected to the inner wall of a support frame 102. A storage groove 7 is provided on one side of the upper surface of a support frame 102. Two guide rods 63 are symmetrically fixedly connected between one side of the upper surface of a support frame 102 and the extension bracket 401. The outer walls of the two guide rods 63 are slidably connected to the inner wall of a storage rack 103. The sliding storage rack 103 is guided by the guide rods 63 and the slider 64, so that the stability of the storage rack 103 during movement is ensured.

[0043] The placement groove 7 is provided so that when hot-melt welding is performed on the PE pipe, the placement groove 7 can be used to limit the hot-melt tool.

[0044] In one embodiment, four rollers 62 are symmetrically fixedly connected to the bottom of the base frame 101, and the rollers 62 are arranged to make the fixing device as a whole more convenient to move over short distances.

[0045] In one embodiment, Figure 1 As shown, the right rack 103 is used to fix installed pipes, and the left rack 103 is used to fix uninstalled pipes.

[0046] When the utility model is in operation: when it is necessary to fix the installed pipeline, a support frame 102 is driven by the piston rod of the second hydraulic cylinder 5 to move upward, and the moving support frame 102 drives a connecting frame 201 to move by means of a storage rack 103, and then the rising height of the storage rack 103 is controlled according to actual needs so that the inner wall of the storage rack 103 is fitted with the outer wall of the pipeline.

[0047] When the height adjustment of the rack 103 is completed, the installed pipe is inserted into a rack 103 by moving the base frame 101 and using the roller 62, and then the clamping plate 202 is driven to move by the threaded rod 203 by turning the handle 61. The moving clamping plate 202 squeezes the top of the outer wall of the pipe to cooperate with the rack 103 to complete the fixing operation of the pipe. The moving clamping plate 202 is guided by the provided slide groove 204 to ensure the stability of the clamping plate 202 during the movement.

[0048] When the installed pipe is fixed, the uninstalled pipe is moved and inserted into another rack 103, and an extension bracket 401 and a ball 402 are used for preliminary positioning. Then, the handle 61 is turned to use another threaded rod 203 to drive another clamping plate 202 to move, so that the clamping plate 202 and the rack 103 can be used to fix the uninstalled pipe.

[0049] When the unmounted pipe is fixed, the second hydraulic cylinder 5 drives another support frame 102 to move upward, so that the two support frames 102 are aligned, so that the unmounted pipe is flush with the installed pipe, and then the piston rod of the first hydraulic cylinder 3 drives a rack 103 to slide on the support frame 102, and the guide rod 63 and the slider 64 are used to guide the sliding rack 103 to ensure the stability of the rack 103 during the movement, so that the rack 103 can be used to cooperate with the clamping plate 202 to move the unmounted pipe to one side of the other pipe, and the two pipes can be fitted to verify whether the two pipes are in a flush state, so that there is no need for manual alignment operation, which simplifies the operation method, and enables the fixing device to have a lifting function to be suitable for welding operations of pipes of different heights, thereby reducing the construction difficulty.

[0050] When the two pipes are aligned, use welding tools to weld the two pipes together.

[0051] The provided ball bearings 402 are used to reduce the friction between the pipe and the extension bracket 401 so that the pipe can slide smoothly in the extension bracket 401, and the provided support pillow 403 is used to increase the contact area between the extension bracket 401 and the storage rack 103 and the pipe.

[0052] The placement groove 7 is provided so that when hot-melt welding is performed on the PE pipe, the placement groove 7 can be used to limit the position of the hot-melt tool so that the hot-melt tool can be limited and fixed between the two PE pipes.

[0053] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A welding fixture, comprising a frame assembly (1) and two clamping mechanisms (2), characterized in that: The frame assembly (1) comprises a base frame (101), two support frames (102) and two storage racks (103); Wherein, the two support frames (102) are both arranged on the upper surface of the base frame (101), one storage rack (103) is fixedly connected to the upper surface of one support frame (102), the other storage rack (103) is slidably connected to the upper surface of the other support frame (102), the two clamping mechanisms (2) are respectively fixedly connected to the tops of the two storage racks (103), an extension support mechanism (4) is fixed on the upper surface of one support frame (102), two first hydraulic cylinders (3) are symmetrically installed on one side of the extension support mechanism (4), the piston rods of the two first hydraulic cylinders (3) are both fixedly connected to one side of the storage rack (103), four second hydraulic cylinders (5) are symmetrically fixedly connected to the bottom of the inner side wall of the base frame (101), and the piston rods of the four second hydraulic cylinders (5) are respectively fixedly connected to the bottoms of the two support frames (102); The clamping mechanism (2) is used to cooperate with the storage rack (103) to fix the pipe that needs to be welded; The first hydraulic cylinder (3) is used to drive the storage rack (103) to cooperate with the clamping mechanism (2) to dock the fixed pipeline; Wherein, the second hydraulic cylinder (5) is used to drive the support frame (102) to adjust the height of the storage rack (103); Wherein, the extended support mechanism (4) is used to assist the clamping mechanism (2) and the storage rack (103) in supporting the pipeline.

2. The welding fixture according to claim 1, characterized in that: The two clamping mechanisms (2) each comprise a connecting frame (201), a clamping plate (202), a threaded rod (203) and a sliding groove (204); The bottom of the connecting frame (201) is fixedly connected to the top of the storage rack (103), the sliding groove (204) is opened on the inner wall of the connecting frame (201), and the outer wall of the clamping plate (202) is slidably connected to the inner wall of the sliding groove (204).

3. The welding fixture according to claim 2, characterized in that: The outer wall of the threaded rod (203) is threadedly connected to the top of the inner wall of the connecting frame (201), and the bottom of the threaded rod (203) is rotatably connected to the middle of the upper surface of the clamping plate (202) via a bearing.

4. The welding fixture according to claim 2, characterized in that: A handle (61) is fixedly connected to the top of the threaded rod (203).

5. The welding fixture according to claim 1, characterized in that: The expansion support mechanism (4) comprises an expansion bracket (401), a plurality of rolling balls (402) and three support pillows (403); The extension bracket (401) is fixedly connected to the upper surface of one of the support brackets (102), a plurality of the ball bearings (402) are rotatably connected to the inner wall of the extension bracket (401), the three support pillows (403) are respectively fixedly connected to one side of the extension bracket (401) and the two storage racks (103), and the two first hydraulic cylinders (3) are installed on one side of the extension bracket (401).

6. The welding fixture according to claim 1, characterized in that: A slider (64) is fixedly connected to the bottom of one of the storage racks (103), an outer wall of the slider (64) is slidably connected to an inner wall of one of the support racks (102), and a storage groove (7) is provided on one side of the upper surface of one of the support racks (102).

7. The welding fixture according to claim 5, characterized in that: Two guide rods (63) are symmetrically fixedly connected between one side of the upper surface of one of the support frames (102) and the extension frame (401), and the outer side walls of the two guide rods (63) are slidably connected to the inner side wall of one of the storage racks (103).

8. The welding fixture according to claim 1, characterized in that: Four rollers (62) are symmetrically fixedly connected to the bottom of the base frame (101).

Images