Turnover repair welding clamp

Abstract

The utility model relates to a turning repair welding clamp, which relates to the clamp field, and comprises a rack, a clamp frame and a plurality of clamping mechanisms, the clamp frame is rotatably connected with the rack, the clamp frame is provided with a plurality of clamping mechanisms, two sides of one end of the clamp frame are respectively provided with a first avoiding vacancy, and the middle part of the other end of the clamp frame is provided with a second avoiding vacancy. The welding fixture has the advantages that enough assembling and welding space is reserved for parts needing to be welded at the bottom through the second receding gaps, meanwhile, the first receding gaps in the two sides are reserved, and welding of the parts at the bottoms of the two sides of a frame or other workpieces to be machined is facilitated. All welding seams and parts can be assembled and welded on the overturning repair welding clamp, and safety accidents caused by the fact that the parts are assembled and welded on the ground in a rolling mode are avoided.

Description

Technical Field

[0001] The utility model relates to the field of fixtures, in particular to a flip repair welding fixture. Background Art

[0002] The current welding workshop's positioner is a Type I structure, with the vehicle frames positioned on the positioner's fixtures. While this structure can handle most cab assembly and welding tasks without welds in the middle or components on the frame's bottom, it cannot be used for structures with large components mounted on the cab's bottom or welds on the frame's bottom. Similar challenges exist for other workpieces requiring both welding and assembly, as both cannot be accomplished on the same fixture. Typically, separate fixtures are used for assembly and processing. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to clamp a workpiece to be processed whose bottom needs to be welded and assembled.

[0004] The technical solution of the utility model to solve the above technical problems is as follows: a flip welding fixture, including a frame, a fixture frame and a clamping mechanism, the fixture frame is rotatably connected to the frame, a plurality of the clamping mechanisms are provided on the fixture frame, both sides of one end of the fixture frame have a first avoidance gap, and the middle part of the other end of the fixture frame has a second avoidance gap.

[0005] The beneficial effects of this utility model are as follows: the second clearance provides ample space for assembly and welding of bottom parts to be welded, while also retaining the first clearances on both sides, facilitating the welding of bottom parts on both sides of the frame or other workpieces to be processed. All welds and parts can be welded on the flip welding fixture, avoiding safety accidents caused by the frame rolling on the ground during welding.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the clamp frame includes a rectangular frame, a center rod and a cross rod, one end of the rectangular frame is rotatably connected to the frame, one end of the center rod is fixedly connected to the middle of the other end of the rectangular frame, the cross rod is perpendicular to the center rod and fixedly connected to the other end of the center rod, and the other end of the center rod is rotatably connected to the frame.

[0008] The beneficial effect of adopting the above further scheme is that the fixture frame is composed of a rectangular frame and an I-shaped structure composed of a center rod and a cross rod. The structural strength is high and can provide sufficient support for the workpiece to be processed; and sufficient space is left for welding on both sides of one end of the workpiece and assembly in the middle of the other end.

[0009] Furthermore, the flip repair welding fixture also includes two extension arms, which are respectively fixed to the two ends of the fixture frame, and are both rotatably connected to the frame.

[0010] The beneficial effects of adopting the above-mentioned further scheme are: the two ends of the clamp frame are rotatably connected to the frame through extension arms, thereby increasing the rotation radius of the clamp frame; and leaving installation space for the workpiece to be processed, thereby avoiding excessive deviation in the center of gravity position of the workpiece to be processed after rotation, and the flip welding fixture has high stability during use.

[0011] Furthermore, a plurality of the clamping mechanisms are arranged at intervals along the circumference of the clamp frame.

[0012] The beneficial effect of adopting the above further solution is that multiple clamping mechanisms are clamped on the circumferential outer side of the workpiece to be processed, and it can be applied to a variety of workpieces to be processed with similar structures, with strong versatility.

[0013] Furthermore, the clamping mechanism includes a telescopic mechanism, a fixed block, a first connecting rod, a second connecting rod and a pressure rod. The fixed block is fixedly connected to the clamp frame, one end of the telescopic mechanism is hinged to the fixed block, and the other end is hinged to one end of the first connecting rod, the other end of the first connecting rod is hinged to the fixed block, the middle part of the first connecting rod is hinged to one end of the second connecting rod, the other end of the second connecting rod is hinged to one end of the pressure rod, the middle part of the pressure rod is hinged to the fixed block, and the other end of the pressure rod has a clamping head.

[0014] The beneficial effect of adopting the above further solution is that the telescopic mechanism is extended and retracted, thereby driving the first connecting rod, the second connecting rod and the pressure rod to move, so that the pressing head of the pressure rod approaches the clamp frame and clamps the workpiece, or moves away from the clamp frame and releases the workpiece.

[0015] Furthermore, the second connecting rod can be moved to be collinear with the other end of the first connecting rod.

[0016] The beneficial effect of adopting the above-mentioned further scheme is that when the pressure rod moves to the clamping position, the second connecting rod is collinear with the other end of the first connecting rod and is locked by a mechanical structure. Even if the telescopic mechanism loses its clamping function, the clamping mechanism can use the connecting rod structure to reversely self-lock, thereby preventing the telescopic mechanism from suddenly failing during operation, causing it to lose its clamping function and causing a safety accident.

[0017] Furthermore, the flip repair welding fixture also includes a positioning pin, which is fixedly connected to the fixture frame.

[0018] The beneficial effect of adopting the above further solution is: the workpiece to be processed is positioned by using the positioning pin, thereby ensuring that the installation position of the workpiece to be processed is accurate.

[0019] Furthermore, there are two positioning pins, which are respectively fixed at two diagonal corners of the clamp frame.

[0020] Furthermore, the frame includes two columns, the two columns are fixedly arranged at an interval, and the two ends of the clamp frame are rotatably connected to the two columns respectively.

[0021] Furthermore, the flip repair welding fixture also includes a driving device, which is fixedly connected to the frame and transmission-connected to the fixture frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a three-dimensional diagram of the utility model when a flip repair welding fixture is clamped on a vehicle frame;

[0023] Figure 2 for Figure 1 A front view of a flip repair welding fixture;

[0024] Figure 3 for Figure 2 A top view of a flip repair welding fixture;

[0025] Figure 4 A three-dimensional diagram of the fixture frame and clamping mechanism;

[0026] Figure 5 for Figure 4 A partial enlarged view of the clamping mechanism at A.

[0027] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0028] 1. Frame; 11. Column; 2. Clamp frame; 21. First avoidance gap; 22. Second avoidance gap; 23. Rectangular frame; 24. Center rod; 25. Crossbar; 3. Clamping mechanism; 31. Telescopic mechanism; 32. Fixed block; 33. First connecting rod; 34. Second connecting rod; 35. Press rod; 4. Extension arm; 5. Positioning pin; 6. Drive device. DETAILED DESCRIPTION

[0029] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0030] like Figure 1-Figure 5 As shown, this embodiment provides a flip repair welding fixture, including a frame 1, a fixture frame 2 and a clamping mechanism 3. The fixture frame 2 is rotatably connected to the frame 1. A plurality of clamping mechanisms 3 are provided on the fixture frame 2. Both sides of one end of the fixture frame 2 have a first avoidance gap 21, and the middle part of the other end of the fixture frame 2 has a second avoidance gap 22.

[0031] The second clearance 22 provides ample space for assembly and welding of bottom components. The first clearances 21 on either side are also retained to facilitate welding of bottom components on both sides of the frame or other workpieces. All welds and components can be welded on the flip welding fixture, preventing accidents such as rolling the frame on the ground during welding.

[0032] On the basis of the above technical solution, the clamp frame 2 includes a rectangular frame 23, a center rod 24 and a cross rod 25. One end of the rectangular frame 23 is rotatably connected to the frame 1, and one end of the center rod 24 is fixedly connected to the middle of the other end of the rectangular frame 23. The cross rod 25 is perpendicular to the center rod 24 and fixedly connected to the other end of the center rod 24. The other end of the center rod 24 is rotatably connected to the frame 1.

[0033] The fixture frame 2 consists of an I-shaped structure consisting of a rectangular frame 23, a center rod 24 and a cross rod 25. The structure has high structural strength and can provide sufficient support for the workpiece to be processed; and there is enough space for welding on both sides of one end of the workpiece and assembly in the middle of the other end.

[0034] Specifically, such as Figure 4 As shown, the middle of the rectangular frame 23 forms a second avoidance gap 22 , and both sides of the central rod 24 form first avoidance gaps 21 .

[0035] Specifically, the middle portion of the crossbar 25 is fixedly connected to the center rod 24. The rectangular frame 23, the center rod 24 and the crossbar 25 are arranged in the same plane.

[0036] The rectangular frame 23 can be replaced by a polygonal frame or a circular frame; the rectangular frame 23, the center rod 24, and the crossbar 25 can be made of rectangular or other shaped profiles; the clamp frame 2 can also be a plate-like structure, with the first and second relief gaps 21, 22 formed by punching or cutting into the plate. Any clamp frame 2 having the first and second relief gaps 21, 22 is within the scope of protection of the present utility model.

[0037] On the basis of any of the above schemes, the flip repair welding fixture further includes an extension arm 4, and there are two extension arms 4. The two extension arms 4 are respectively fixed at the two ends of the fixture frame 2, and the two extension arms 4 are both rotatably connected to the frame 1.

[0038] The two ends of the clamp frame 2 are rotatably connected to the frame 1 through the extension arm 4, which increases the rotation radius of the clamp frame 2; and leaves installation space for the workpiece to be processed, avoiding excessive deviation of the center of gravity position of the workpiece to be processed after rotation, and the flip welding fixture has high stability during use.

[0039] On the basis of any of the above solutions, a plurality of the clamping mechanisms 3 are arranged at intervals along the circumference of the clamp frame 2 .

[0040] The plurality of clamping mechanisms 3 are clamped on the circumferential outer side of the workpiece to be processed, and can be applied to a variety of workpieces to be processed with similar structures, and have strong versatility.

[0041] In one specific example, there are four clamping mechanisms 3 , and the four clamping mechanisms 3 are respectively arranged at the four corners of the clamp frame 2 .

[0042] Alternatively, the number of the clamping mechanisms 3 may be increased or decreased according to actual needs, for example, three, five, or more than six.

[0043] Based on any of the above schemes, the clamping mechanism 3 includes a telescopic mechanism 31, a fixed block 32, a first connecting rod 33, a second connecting rod 34 and a pressure rod 35. The fixed block 32 is fixedly connected to the clamp frame 2, one end of the telescopic mechanism 31 is hinged to the fixed block 32, and the other end thereof is hinged to one end of the first connecting rod 33, the other end of the first connecting rod 33 is hinged to the fixed block 32, the middle part of the first connecting rod 33 is hinged to one end of the second connecting rod 34, the other end of the second connecting rod 34 is hinged to one end of the pressure rod 35, the middle part of the pressure rod 35 is hinged to the fixed block 32, and the other end of the pressure rod 35 has a clamping head.

[0044] The telescopic mechanism 31 is extended and retracted, thereby driving the first connecting rod 33, the second connecting rod 34 and the pressing rod 35 to move, so that the pressing head of the pressing rod 35 approaches the clamp frame 2 and clamps the workpiece, or moves away from the clamp frame 2 and releases the workpiece.

[0045] Optionally, the telescopic mechanism 31 is a pneumatic cylinder, a hydraulic cylinder, an electric telescopic rod or a manual telescopic rod.

[0046] Based on any of the above solutions, the second connecting rod 34 can be moved to be collinear with the other end of the first connecting rod 33 .

[0047] When the pressure rod 35 moves to the clamping position, the second connecting rod 34 and the other end of the first connecting rod 33 are collinear and mechanically locked. Even if the telescopic mechanism 31 loses its clamping function, the clamping mechanism 3 can use the connecting rod structure to reversely self-lock, preventing the telescopic mechanism 31 from suddenly failing during operation, causing it to lose its clamping function and causing a safety accident. In other words, when the telescopic mechanism 31 loses its clamping function, if the pressure rod 35 attempts to lift under the force of the clamped workpiece, it will apply a force along its length to the second connecting rod 34. Under the action of this force, the second connecting rod 34 and the first connecting rod 33 cannot rotate relative to each other, and thus the pressure rod 35 cannot be lifted. The clamping mechanism 3 can only switch the pressure rod 35 to clamp or release the workpiece by actively extending and retracting the telescopic mechanism 31.

[0048] Specifically, the first connecting rod 33 is an L-shaped rod, the middle part of the first connecting rod 33 is hinged to one end of the second connecting rod 34, the other end of the first connecting rod 33 is hinged to the first extension piece extending laterally from the fixing block 32, and the middle part of the pressure rod 35 is fixed with a second extension piece extending downward, and the second extension piece is hinged to the fixing block 32. Figure 5 The diagram shows the structure when the pressing rod 35 is in the clamping position. At this time, a rectangular area is formed between the other end of the first connecting rod 33, the second connecting rod 34, the pressing rod 35 and the fixing block 32.

[0049] On the basis of any of the above solutions, the flip repair welding fixture further includes a positioning pin 5 , which is fixedly connected to the fixture frame 2 .

[0050] The positioning pin 5 is used to position the workpiece to be processed to ensure that the installation position of the workpiece to be processed is accurate.

[0051] On the basis of any of the above solutions, there are two positioning pins 5 , and the two positioning pins 5 are respectively fixed at two diagonal positions of the clamp frame 2 .

[0052] In one specific example, a group of positioning pins 5 is provided at two diagonal positions of the fixture frame 2, and another group of positioning pins 5 is provided at the other two diagonal positions. The two groups of positioning pins 5 can be used to position frames of different models, thereby improving the versatility of the flip welding fixture.

[0053] On the basis of any of the above solutions, the frame 1 includes two columns 11 , the two columns 11 are fixedly arranged at an interval, and both ends of the clamp frame 2 are rotatably connected to the two columns 11 respectively.

[0054] On the basis of any of the above solutions, the flip repair welding fixture further includes a driving device 6 , which is fixedly connected to the frame 1 and is transmission-connected to the fixture frame 2 .

[0055] The drive device 6 is a drive motor or a manually driven mechanical drive mechanism, such as a worm gear mechanism. The output shaft of the drive device 6 is directly fixedly connected to the clamp frame 2, or indirectly driven by a transmission mechanism, which can be a belt drive assembly, a chain drive assembly, or a gear drive assembly, or a combination of at least two of the above.

[0056] In the description of the present invention, it should be noted that the terms "vertical", "horizontal", "top", "bottom", etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They 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. Therefore, they cannot be understood as limitations on the present invention.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0058] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" 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 present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0060] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0061] 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, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flip welding fixture, characterized in that: The invention comprises a machine frame (1), a clamp frame (2) and a clamping mechanism (3); the clamp frame (2) is rotatably connected to the machine frame (1); a plurality of clamping mechanisms (3) are provided on the clamp frame (2); both sides of one end of the clamp frame (2) have a first avoidance gap (21); and the middle of the other end of the clamp frame (2) has a second avoidance gap (22).

2. The flip welding fixture according to claim 1, characterized in that: The clamp frame (2) comprises a rectangular frame (23), a center rod (24) and a cross rod (25); one end of the rectangular frame (23) is rotatably connected to the frame (1); one end of the center rod (24) is fixedly connected to the middle of the other end of the rectangular frame (23); the cross rod (25) is perpendicular to the center rod (24) and fixedly connected to the other end of the center rod (24); and the other end of the center rod (24) is rotatably connected to the frame (1).

3. The flip welding fixture according to claim 1, characterized in that: It also includes an extension arm (4), wherein there are two extension arms (4), the two extension arms (4) are respectively fixed to the two ends of the clamp frame (2), and the two extension arms (4) are both rotatably connected to the frame (1).

4. The flip welding fixture according to claim 1, characterized in that: A plurality of the clamping mechanisms (3) are arranged at intervals along the circumference of the clamp frame (2).

5. The flip welding fixture according to claim 1, characterized in that: The clamping mechanism (3) includes a telescopic mechanism (31), a fixed block (32), a first connecting rod (33), a second connecting rod (34) and a pressure rod (35), wherein the fixed block (32) is fixedly connected to the clamp frame (2), one end of the telescopic mechanism (31) is hinged to the fixed block (32), and the other end thereof is hinged to one end of the first connecting rod (33), the other end of the first connecting rod (33) is hinged to the fixed block (32), the middle part of the first connecting rod (33) is hinged to one end of the second connecting rod (34), the other end of the second connecting rod (34) is hinged to one end of the pressure rod (35), the middle part of the pressure rod (35) is hinged to the fixed block (32), and the other end of the pressure rod (35) has a clamping head.

6. The flip welding fixture according to claim 5, characterized in that: The second connecting rod (34) can be moved to be collinear with the other end of the first connecting rod (33).

7. The flip welding fixture according to claim 1, characterized in that: It also includes a positioning pin (5), which is fixedly connected to the clamp frame (2).

8. The flip welding fixture according to claim 7, characterized in that: There are two positioning pins (5), and the two positioning pins (5) are respectively fixed at two diagonal positions of the clamp frame (2).

9. A flip welding fixture according to any one of claims 1 to 8, characterized in that: The frame (1) comprises two columns (11), the two columns (11) are fixedly arranged at intervals, and the two ends of the clamp frame (2) are rotatably connected to the two columns (11) respectively.

10. The flip repair welding fixture according to any one of claims 1 to 8, characterized in that: It also includes a driving device (6), which is fixedly connected to the frame (1) and is transmission-connected to the clamp frame (2).

Images