Fixture for integrated welding of oil suction pipe

Abstract

The utility model provides a clamp for integrated welding of an oil suction pipe. The clamp comprises a positioning frame, a first jacking piece, a second jacking piece and at least one third jacking piece. The positioning frame is provided with a first positioning part, a second positioning part and at least one third positioning part, the first positioning part is used for supporting and positioning an elbow at one end of the oil suction pipe, the second positioning part is used for supporting and positioning a straight joint at the other end of the oil suction pipe, and each third positioning part is used for supporting and positioning the middle of the oil suction pipe for welding a pipe clamp; the first jacking piece is connected to the positioning frame and is matched with the first positioning part to clamp the elbow; the second jacking piece is arranged on the positioning frame and is matched with the second positioning part to clamp the straight joint; the at least one third jacking piece is connected to the positioning frame and corresponds to the third positioning parts one by one; and the third pressing piece is used for pressing the pipe clamp against the oil suction pipe. According to the clamp for integrated welding of the oil suction pipe, multiple positions can be brazed at the same time, and leakage among pipe body parts is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil suction pipe welding, and particularly relates to a clamp for integrated welding of oil suction pipes. Background Art

[0002] The oil suction line is cast from pure aluminum and installed within the reducer. Positioning accuracy and pipe interface requirements are stringent, requiring precise positioning and dimensions. The oil suction line is typically designed as a curved metal tube based on the reducer's piping layout. An elbow is welded to one end of the tube, and a straight connector is welded to the other. At least one pipe clamp is welded midway to connect the tube to the reducer housing to ensure stable installation.

[0003] In the existing technology, the oil suction pipe needs to be bent and then the three components are welded in sequence. Since different positions of the oil suction pipe body are heated alternately during the welding process, the stress release after welding is completed can easily cause serious elastic deformation of the pipe. In addition, the entire welding process requires multiple parts clamping and positioning for different welding positions, which is time-consuming and labor-intensive, and seriously affects work efficiency. Utility Model Content

[0004] The embodiment of the utility model provides a clamp for integrated welding of an oil suction pipe, aiming to solve the problems of large deformation and low efficiency of welding of the oil suction pipe in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide an integrated welding fixture for oil suction pipes, including a positioning frame, a first pressing member, a second pressing member and at least one third pressing member; the positioning frame has a first positioning portion, a second positioning portion and at least one third positioning portion, the first positioning portion is used to support and position the elbow at one end of the oil suction pipe, the second positioning portion is used to support and position the straight joint at the other end of the oil suction pipe, and each third positioning portion is used to support and position the position in the middle of the oil suction pipe for welding the pipe clamp; the first pressing member is connected to the positioning frame and cooperates with the first positioning portion to clamp the elbow; the second pressing member is provided on the positioning frame and cooperates with the second positioning portion to clamp the straight joint; at least one third pressing member is respectively connected to the positioning frame and corresponds to each third positioning portion one by one; the third pressing member is used to press the pipe clamp against the oil suction pipe.

[0006] In a possible implementation, the first positioning portion is provided with a first positioning structure that is plug-fitted with the elbow; and the second positioning portion is provided with a second positioning structure that is plug-fitted with the straight connector.

[0007] In a possible implementation, a bearing member suitable for embedding a portion of the wall of the oil suction pipe is provided on the third positioning portion.

[0008] In a possible implementation, a clamping member is provided at one end of the second pressing member, and the clamping member is provided with a claw suitable for clamping into the annular groove on the direct head.

[0009] In a possible implementation, the positioning frame is provided with through holes suitable for the first pressing member and the third pressing member to pass through, and the side wall of the positioning frame is provided with threaded holes communicating with the through holes.

[0010] In a possible implementation, gravity members are provided on the first pressing member and the third pressing member, and the gravity members are used to position the elbow and the pipe clamp.

[0011] In a possible implementation, the positioning frame is further provided with a fixing rod, one end of which is provided with a threaded section that is threadedly engaged with the threaded hole. The fixing rod is used to fix the first pressing member and the second pressing member on the positioning frame.

[0012] In a possible implementation, a positioning member is provided at one end of the third pressing member away from the gravity member, and the positioning member is provided with a slot suitable for buckling on the pipe clamp.

[0013] In a possible implementation, a handle is provided at one end of the fixing rod away from the threaded section.

[0014] In a possible implementation, a fixing block is provided on the positioning frame, and the fixing block is provided with a sliding hole suitable for the second pressing member to pass through, and the sliding hole is aligned with the second positioning portion.

[0015] The beneficial effects of the integrated welding clamp for the oil suction pipe provided by the utility model are as follows: compared with the prior art, the utility model respectively clamps the elbow through the cooperation of the first positioning part and the first pressing piece, clamps the straight joint through the cooperation of the second positioning part and the second pressing piece, and positions and clamps the oil suction pipe through the third positioning part and the third pressing piece and presses the pipe clamp against the oil suction pipe, so that the various parts on the oil suction pipe fit tightly with the oil suction pipe, avoiding relative movement between the parts and the oil suction pipe during brazing; when brazing, multiple parts and the oil suction pipe abut against each other, and multiple abutting positions are brazed at the same time. Compared with the welding method of gradually brazing each welding position, it can prevent the internal stress generated by heat in the oil suction pipe from causing gaps between the parts and the oil suction pipe, avoid leakage between the parts and the oil suction pipe, and help improve the quality of the finished oil suction pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of the oil suction pipe integrated welding fixture provided by the embodiment of the present invention when the pipe body part and the oil suction pipe are fixed;

[0017] Figure 2 A schematic diagram of the three-dimensional structure of the oil suction pipe integrated welding fixture provided by the embodiment of the utility model without fixing the pipe body parts and the oil suction pipe;

[0018] Figure 3 A schematic diagram of the three-dimensional structure of the positioning frame and the fixing block used in the embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the exploded structure of the oil suction pipe and the pipe body parts in the embodiment of the utility model;

[0020] In the figure: 10, positioning frame; 11, first positioning part; 111, first positioning structure; 12, second positioning part; 121, second positioning structure; 13, third positioning part; 131, bearing member; 14, through hole; 15, threaded hole; 16, fixing rod; 161, threaded section; 162, handle; 17, fixing block; 171, sliding hole; 20, first pressing member; 30, second pressing member; 21, clamping member; 40, third pressing member; 41, positioning member; 50, gravity member; 60, oil suction pipe; 70, elbow; 80, straight joint; 90, pipe clamp. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the terms "upper", "lower", "front", "back", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 a limitation on the present invention. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0023] Please also refer to Figure 1 and Figure 2Now, the integrated welding fixture for the oil suction pipe provided by the present invention is described. The fixture for integrated welding of the oil suction pipe includes a positioning frame 10, a first pressing member 20, a second pressing member 30 and at least one third pressing member 40; the positioning frame 10 has a first positioning portion 11, a second positioning portion 12 and at least one third positioning portion 13, the first positioning portion 11 is used to support and position the elbow 70 at one end of the oil suction pipe 60, the second positioning portion 12 is used to support and position the straight head 80 at the other end of the oil suction pipe 60, and each third positioning portion 13 is used to support and position the middle of the oil suction pipe 60 for welding the pipe clamp 90; the first pressing member 20 is connected to the positioning frame 10 and cooperates with the first positioning portion 11 to clamp the elbow 70; the second pressing member 30 is provided on the positioning frame 10 and cooperates with the second positioning portion 12 to clamp the straight head 80; at least one third pressing member 40 is respectively connected to the positioning frame 10 and corresponds to each third positioning portion 13 one by one; the third pressing member 40 is used to press the pipe clamp 90 against the oil suction pipe 60.

[0024] Please note that Figure 4 The first positioning portion 11, the second positioning portion 12 and the third positioning portion 13 respectively support the elbow 70, the straight joint 80 and the oil suction pipe 60, and cooperate with the first pressing piece 20, the second pressing piece 30 and the third pressing piece 40 to make the elbow 70, the straight joint 80 and the pipe clamp 90 abut against the oil suction pipe 60; the oil suction pipe 60, the elbow 70, the straight joint 80 and the pipe clamp 90 are fixed together and then brazed, which can avoid relative movement between the oil suction pipe 60 and the parts during the brazing process, prevent gaps from occurring in the finished oil suction pipe 60, and help improve the quality of the finished oil suction pipe 60.

[0025] The beneficial effects of the integrated welding fixture for the oil suction pipe provided by the present invention are as follows: compared with the prior art, the present invention respectively clamps the elbow 70 through the first positioning portion 11 and the first pressing piece 20, clamps the straight joint 80 through the second positioning portion 12 and the second pressing piece 30, and positions and clamps the oil suction pipe 60 through the third positioning portion 13 and the third pressing piece 40 and presses the pipe clamp 90 against the oil suction pipe 60, so that the various parts on the oil suction pipe 60 fit tightly with the oil suction pipe 60, avoiding relative movement between the parts and the oil suction pipe 60 during brazing; when brazing, multiple parts and the oil suction pipe 60 abut against each other, and multiple abutting positions are brazed at the same time. Compared with the welding method of gradually brazing each welding position, the internal stress generated by heat in the oil suction pipe 60 can be prevented from causing gaps between the parts and the oil suction pipe 60, thereby avoiding leakage between the parts and the oil suction pipe 60, which is beneficial to improving the quality of the finished product of the oil suction pipe 60.

[0026] In one possible implementation, see Figure 2The first positioning portion 11 is provided with a first positioning structure 111 that is plugged into and matched with the elbow 70 ; the second positioning portion 12 is provided with a second positioning structure 121 that is plugged into and matched with the straight connector 80 .

[0027] It should be noted that the first positioning structure 111 can be a mounting hole or a positioning pin, and the elbow 70 can be inserted into the mounting hole or sleeved on the positioning pin for fixation, and the first pressing piece 20 is used to press the upper surface of the elbow 70 to fix the elbow 70 to the first positioning portion 11; the second positioning structure 121 can be a semicircular accommodating groove with the same curvature as the annular groove on the direct head 80, so that the annular groove on the direct head 80 can be snapped onto the second positioning structure 121 for fixation, and the second pressing piece 30 is used to press the upper surface of the direct head 80 to fix the direct head 80 on the second positioning portion 12, preventing relative movement between the elbow 70 and the direct head 80 and the oil suction pipe 60 during brazing, and avoiding the generation of gaps between the elbow 70 and the direct head 80 and the oil suction pipe 60 during brazing, which is beneficial to improving the quality of the finished product of the oil suction pipe 60.

[0028] In one possible implementation, see Figure 2 The third positioning portion 13 is provided with a bearing member 131 suitable for embedding a portion of the wall of the oil suction pipe 60 .

[0029] It should be noted that the supporting member 131 can be a semicircular receiving member with the same curvature as the wall of the oil suction pipe 60. The wall of the oil suction pipe 60 can fit tightly with the inner wall of the supporting member 131. When the oil suction pipe 60 is squeezed in the upper and lower directions, the squeezing force will be evenly distributed on the supporting member 131, avoiding local force on the oil suction pipe 60 causing excessive local pressure and causing damage to the oil suction pipe 60, which is beneficial to protecting the finished oil suction pipe 60.

[0030] In one possible implementation, see Figure 2 A clamping member 21 is provided at one end of the second pressing member 30 , and a claw suitable for clamping into the annular groove on the direct head 80 is provided on the clamping member 21 .

[0031] It should be noted that the direct joint 80 is a straight-through pipe joint, and the annular groove is the structure of the direct joint 80 itself. The claws on the clamping member 21 have the same curvature as the annular groove of the direct joint 80, and can fit tightly with the annular groove on the direct joint 80 under the top pressure of the second top pressure member 30, positioning the direct joint 80 on the second positioning portion 12, and can simultaneously avoid radial and axial misalignment of the direct joint 80, thereby improving positioning accuracy; the first top pressure member 20 and the second top pressure member 30 cooperate with each other, so that the elbow 70 and the direct joint 80 can be positioned in the first positioning portion 11 and the second positioning portion 12 respectively, abutting against the two ends of the oil suction pipe 60, and can resist thermal deformation of the elbow 70 and the direct joint 80 during brazing, and avoid leakage at the connection position between the elbow 70 and the direct joint 80 and the oil suction pipe 60, which is beneficial to improving the quality of the finished oil suction pipe 60.

[0032] In one possible implementation, see Figure 3 The positioning frame 10 is provided with a through hole 14 suitable for the first pressing member 20 and the third pressing member 40 to pass through, and the side wall of the positioning frame 10 is provided with a threaded hole 15 connected to the through hole 14.

[0033] It should be noted that the opening direction of the through hole 14 is aligned with the first positioning portion 11 and the third positioning portion 13, so that the first pressing member 20 and the third pressing member 40 are always aligned with the elbow 70 and the pipe clamp 90 during the sliding process in the through hole 14, so that the first pressing member 20 and the third pressing member 40 can effectively abut against the elbow 70 and the pipe clamp 90, avoiding the formation of gaps between the elbow 70 and the pipe clamp 90 and the oil suction pipe 60, preventing gaps from occurring at the connection position during the brazing process, and improving the quality of the finished product of the oil suction pipe 60.

[0034] In one possible implementation, see Figure 2 A gravity member 50 is provided on the first pressing member 20 and the third pressing member 40 , and the gravity member 50 is used to position the elbow 70 and the pipe clamp 90 .

[0035] It should be noted that the gravity member 50 can enhance the gravity of the first pressing member 20 and the third pressing member 40. When installing the oil suction pipe 60, the gravity member 50 is first used to enable the pressing member to slide freely inside the through hole 14 by its own gravity and press against the joint, thereby preventing the oil suction pipe 60 from being misaligned with the parts due to external force, avoiding artificial downward pressure on the first pressing member 20 and the third pressing member 40 to cause the oil suction pipe 60 to be unstable, preventing gaps from appearing between the oil suction pipe 60 and the parts, and ensuring the position accuracy between the oil suction pipe 60 and the parts; and the gravity member 50 can play a limiting role, which can It is clamped on the upper surface of the positioning frame 10 to prevent the first pressing piece 20 and the third pressing piece 40 from sliding off the positioning frame 10. Before brazing, the first pressing piece 20 and the third pressing piece 40 are first lifted upward by the gravity piece 50, and the elbow 70 is placed on the first positioning portion 11. The oil suction pipe 60 is placed on the second positioning portion 12, so that the elbow 70 is aligned with one end of the oil suction pipe 60, and the pipe clamp 90 is placed on the surface of the oil suction pipe 60. At this time, the elbow 70, the pipe clamp 90 and the oil suction pipe 60 are aligned or abutted by sliding the first pressing piece 20 and the third pressing piece 40 to press the elbow 70 and the pipe clamp 90.

[0036] In one possible implementation, see Figure 2 The positioning frame 10 is also provided with a fixing rod 16, one end of the fixing rod 16 is provided with a threaded section 161, the threaded section 161 is threadedly engaged with the threaded hole 15, and the fixing rod 16 is used to fix the first pressing member 20 and the second pressing member 30 on the positioning frame 10.

[0037] It should be noted that the threaded section 161 can be screwed into the threaded hole 15 and abut the first pressing piece 20 and the third pressing piece 40. After the clamping ends of the first pressing piece 20 and the third pressing piece 40 abut the elbow 70 and the pipe clamp 90, the first pressing piece 20 and the third pressing piece 40 are fixed inside the through hole 14 by tightening the fixing rod 16, which can increase the pressure of the first pressing piece 20 and the third pressing piece 40, resist the internal stress generated by the oil suction pipe 60 during the brazing process, avoid leakage due to poor contact between the oil suction pipe 60 and the parts during the brazing process, and help improve the quality of the finished product of the oil suction pipe 60.

[0038] In one possible implementation, see Figure 2 A positioning member 41 is provided at one end of the third pressing member 40 away from the gravity member 50 , and a slot suitable for buckling on the pipe clamp 90 is provided on the positioning member 41 .

[0039] It should be noted that the third pressing member 40 not only has the function of pressing the pipe clamp 90 against the middle part of the oil suction pipe 60 through the positioning member 41, but also has the ability to position the oil suction pipe 60 on the third positioning portion 13 by relying on its own gravity; the shape of the positioning member 41 matches the shape of the pipe clamp 90, which can prevent the pipe clamp 90 from being subjected to excessive local force when the pipe clamp 90 is abutted against the side wall of the oil suction pipe 60, thereby avoiding damage to the pipe clamp 90.

[0040] In one possible implementation, see Figure 2 A handle 162 is provided at one end of the fixing rod 16 away from the threaded section 161 .

[0041] It should be noted that the handle 162 can reduce the external force used when rotating the fixing rod 16 , making it easier to operate the fixing rod 16 .

[0042] In one possible implementation, see Figure 3 The positioning frame 10 is provided with a fixing block 17 , and the fixing block 17 is provided with a sliding hole 171 suitable for the second pressing member 30 to pass through, and the sliding hole 171 is aligned with the second positioning portion 12 .

[0043] It should be noted that the fixing block 17 can be a threaded sleeve, and an internal thread is provided in the sliding hole 171. The second pressing piece 30 is threadedly matched with the sliding hole 171. When positioning and installing the oil suction pipe 60, the position of the clamping piece 21 is first determined by rotating the second pressing piece 30, and the direct joint 80 is placed on the second positioning part 12 based on this position, and then the oil suction pipe 60, the elbow 70 and the pipe clamp 90 are fixed.

[0044] The working principle of the clamp for welding the oil suction pipe provided by the embodiment of the present invention is as follows: the first pressing member 20 and the third pressing member 40 are moved away from the first positioning portion 11 and the third positioning portion 13, and the first pressing member 20 and the third pressing member 40 are fixed in the through hole 14 by the fixing rod 16, so that there is space in the positioning frame 10 for placing the oil suction pipe 60 and the elbow 70; the second pressing member 30 is rotated to determine the clamping position, the straight joint 80 is clamped between the clamping member 21 and the plug-in structure, and the oil suction pipe 60 is placed on the bearing member 131. 0, place the elbow 70 on the plug-in structure of the first positioning portion 11, place the pipe clamp 90 on the surface of the oil suction pipe 60, adjust the fixing rod 16 to make the first pressing piece 20 and the third pressing piece 40 fall freely, so that the first pressing piece 20 and the positioning piece 41 are pressed against the upper surface of the elbow 70 and the pipe clamp 90, and adjust the fixing rod 16 again to fix the first pressing piece 20 and the third pressing piece 40 in the through hole 14; apply a quantitative amount of brazing flux at the position where welding is required, place welding wire of corresponding specifications, start the automatic flame welder, and weld the pipe parts together at the same time.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. The fixture for integrated welding of oil suction pipe is characterized by: include: The positioning frame has a first positioning portion, a second positioning portion, and at least one third positioning portion, wherein the first positioning portion is used to support and position the elbow at one end of the oil suction pipe, the second positioning portion is used to support and position the straight joint at the other end of the oil suction pipe, and each of the third positioning portions is used to support and position a position in the middle of the oil suction pipe for welding a pipe clamp; A first pressing member is connected to the positioning frame and cooperates with the first positioning portion to clamp the elbow; A second pressing member is provided on the positioning frame and cooperates with the second positioning portion to clamp the direct connector; At least one third pressing member is respectively connected to the positioning frame and corresponds to each of the third positioning portions one by one; the third pressing member is used to press the pipe clamp against the oil suction pipe.

2. The oil suction pipe integrated welding fixture according to claim 1, characterized in that: The first positioning portion is provided with a first positioning structure that is plugged and matched with the elbow; the second positioning portion is provided with a second positioning structure that is plugged and matched with the straight connector.

3. The oil suction pipe integrated welding fixture according to claim 1, characterized in that: The third positioning portion is provided with a bearing member suitable for embedding a portion of the wall of the oil suction pipe.

4. The oil suction pipe integrated welding fixture according to claim 1, characterized in that: One end of the second pressing member is provided with a clamping member, and the clamping member is provided with a claw suitable for clamping into the annular groove on the direct joint.

5. The oil suction pipe integrated welding fixture according to claim 1, characterized in that: The positioning frame is provided with through holes suitable for the first pressing member and the third pressing member to pass through, and the side wall of the positioning frame is provided with threaded holes communicating with the through holes.

6. The oil suction pipe integrated welding fixture according to claim 5, characterized in that: The first pressing member and the third pressing member are provided with gravity members, and the first pressing member and the third pressing member are respectively used to press the elbow and the pipe clamp under the action of their own gravity.

7. The oil suction pipe integrated welding fixture according to claim 6, characterized in that: The positioning frame is further provided with a fixing rod, one end of which is provided with a threaded section, the threaded section being threadedly engaged with the threaded hole, and the fixing rod is used to fix the first pressing member and the second pressing member on the positioning frame.

8. The oil suction pipe integrated welding fixture according to claim 6, characterized in that: A positioning piece is provided on one end of the third pressing piece away from the gravity piece, and a clamping groove suitable for buckling on the pipe clamp is provided on the positioning piece.

9. The oil suction pipe integrated welding fixture according to claim 7, characterized in that: A handle is provided at one end of the fixing rod away from the threaded section.

10. The oil suction pipe integrated welding fixture according to any one of claims 1 to 9, characterized in that: A fixing block is provided on the positioning frame. The fixing block is provided with a sliding hole suitable for the second pressing member to pass through. The sliding hole is aligned with the second positioning portion.

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