Tailor-welding tool for cab bracket of excavator

Abstract

The utility model relates to the field of excavators, and discloses a tailor-welding tool for a cab bracket of an excavator, which comprises a weldment support frame, cross beam positioning brackets are symmetrically and fixedly connected to the edge part of one end of the upper surface of the weldment support frame, and side wall positioning brackets are arranged on the edge parts of the two sides of the top end of the weldment support frame in parallel; a plurality of positioning climbing blocks are welded between the front and rear side wall positioning supports on the upper surface of the weldment support frame, lug plate positioning supports are symmetrically and fixedly connected to the upper surface of the weldment support frame close to the edge of the front end face, and limiting supports are fixedly mounted at the top end of the weldment support frame close to the lug plate positioning supports; according to the bracket, all the parts of the bracket are placed on the upper surface of the supporting frame, then the effect that all the parts of the bracket are conveniently fixed to the upper surface of the weldment supporting frame is achieved, the stability of all the parts of the bracket in the tailor-welding process is improved, the problem that all the parts of the bracket deviate in the tailor-welding process is solved, and the welding precision of all the parts of the bracket in the welding process is improved.

Description

Technical Field

[0001] The present application relates to the field of excavators, and in particular to a welding fixture for an excavator cab bracket. Background Art

[0002] An excavator is a heavy-duty construction machine, mainly used for excavating, loading, transporting earth and stone, and other engineering construction operations. The excavator cab bracket refers to the supporting structure of the excavator driver's cabin, which is usually welded together by a crossbeam, left / right arm, left / right ear plate, bushing and reinforcement plate, and is used to support and fix the overall structure of the driver's cabin.

[0003] However, due to the high requirements for the relative position and size accuracy of the components of the excavator cab bracket, manual welding cannot guarantee the size requirements. During the welding process, the components may produce a certain position offset under the action of the welding gun, which in turn causes a certain size deviation between the components after welding. In severe cases, it may cause problems during the excavator assembly process, making it impossible to assemble the excavator cab bracket normally.

[0004] In view of the above-mentioned related technologies, the inventor believes that the components of the excavator cab bracket have the defect of position offset during welding, which affects the size after welding. Therefore, a welding tool for the excavator cab bracket is proposed to solve the above problem. Utility Model Content

[0005] In order to solve the problem that the components of the excavator cab bracket have position offset during welding, which affects the size after welding, the present application provides a welding tool for the excavator cab bracket.

[0006] The present application provides a welding fixture for an excavator cab bracket using the following technical solutions:

[0007] The top of the second limit pin is movably mounted on the top of the second limit pin, and movable rods are inserted into the top edge of the second limit pin. A bracket mechanism is further installed on the upper surface of the welded support frame for limiting support of the excavator cab.

[0008] Preferably, the bracket mechanism includes a bracket crossbeam, which is placed on the upper surface of the weldment support frame, and bracket side walls are welded to both side edges of the bracket crossbeam. Bracket sleeves are symmetrically arranged on the top edges of the bracket side walls, and a bracket ear plate is fixedly installed on one side edge of the bracket side wall behind the bracket sleeve.

[0009] Preferably, a fixing plate is symmetrically welded to one side edge of the outer surface of the bracket beam, and a limiting block is fixedly installed on the upper surface of the weldment support frame near the single beam positioning bracket. A first through hole is opened on one side edge of the fixing plate and the limiting block, and a No. 3 limiting pin is inserted into the fixing plate and the limiting block through the first through hole.

[0010] Preferably, a second through hole is provided on the top of one side of the limiting bracket and the edge of one side of the bracket ear plate, the No. 1 limiting pin is located inside the second through hole, and the No. 1 limiting pin and the second through hole are engaged with each other.

[0011] Preferably, a third through hole is formed on the top of one side of the bracket sleeve and the sleeve positioning bracket, and the No. 2 limiting pin is located inside the third through hole. A fourth through hole is formed on the middle of the top of the bracket sleeve and on both sides of the upper surface of the No. 2 limiting pin, and the movable insertion rod is located inside the fourth through hole.

[0012] In summary, this application has the following beneficial technical effects:

[0013] By placing the bracket crossbeam on the upper surface of the crossbeam positioning bracket, the bracket side wall is overlapped on the upper surface of the side wall positioning bracket, the bracket ear plate is clamped in the limit bracket, the bracket sleeve is clamped in the sleeve positioning bracket, the No. 1 limit pin is inserted into the bracket ear plate, and the No. 2 limit pin is inserted into the bracket sleeve, and then the movable rod is inserted through the No. 2 limit pin and the bracket sleeve; compared with the existing technology, this solution has the effect of facilitating the fixing of the various components of the bracket on the upper surface of the weldment support frame, improving the stability of the various components of the bracket during welding, solving the problem of position offset of the various components of the bracket during welding, and improving the accuracy of the welding of the various components of the bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the application;

[0015] Figure 2 It is a structural diagram of the weldment support frame in the embodiment of the application;

[0016] Figure 3 It is a structural diagram of the bracket beam in the embodiment of the application;

[0017] Figure 4 In the application embodiment Figure 2 A schematic diagram of the partially enlarged structure of the middle part;

[0018] Explanation of the accompanying reference numerals: 1. Weldment support frame; 2. Beam positioning bracket; 3. Side wall positioning bracket; 4. Positioning climbing block; 5. Ear plate positioning bracket; 6. Limit bracket; 7. Limit pin No. 1; 8. Bushing positioning bracket; 9. Limit pin No. 2; 10. Movable plug rod; 11. Bracket beam; 12. Bracket side wall; 13. Bracket bushing; 14. Bracket ear plate; 15. Fixed plate; 16. Limit block; 17. Limit pin No. 3. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-4 This application is described in further detail.

[0020] The embodiment of the present application discloses a welding fixture for an excavator cab bracket. Figure 1-4 The top of the second limit pin 9 is movably installed with a movable rod 10. A bracket mechanism is also installed on the upper surface of the welded support frame 1 for limiting the support of the excavator cab.

[0021] The bracket crossbeam 11 is supported by the crossbeam positioning bracket 2, while the side wall positioning bracket 3 cooperates with multiple positioning climbing blocks 4 to support the bracket side wall 12, and the limiting bracket 6 cooperates with the sleeve positioning bracket 8 to limit and support the bracket side wall 12 and the bracket sleeve 13, keeping the various components of the bracket in a stable position on the upper surface of the weldment support frame 1, reflecting the support effect of the weldment support frame 1 on the various components of the bracket.

[0022] Reference Figure 3The bracket mechanism includes a bracket crossbeam 11, which is placed on the upper surface of the weldment support frame 1, and bracket side walls 12 are welded to both side edges of the bracket crossbeam 11. Bracket sleeves 13 are symmetrically arranged on the top edges of the bracket side walls 12, and a bracket ear plate 14 is fixedly installed on one side edge of the bracket side wall 12 behind the bracket sleeve 13. A second through hole is penetrated at the top of one side of the limit bracket 6 and one side edge of the bracket ear plate 14, and the No. 1 limit pin 7 is located inside the second through hole. The No. 1 limit pin 7 and the second through hole are embedded with each other, and a third through hole is penetrated at the top of one side of the bracket sleeve 13 and the sleeve positioning bracket 8, and the No. 2 limit pin 9 is located inside the third through hole. A fourth through hole is penetrated at the middle part of the top of the bracket sleeve 13 and both sides of the upper surface of the No. 2 limit pin 9, and the movable plug rod 10 is located inside the fourth through hole.

[0023] By placing the bracket crossbeam 11 on the upper surface of the crossbeam positioning bracket 2 to ensure that the sides are fitted, the bracket side wall 12 is overlapped on the upper surface of the side wall positioning bracket 3, the bracket ear plate 14 is placed on the outer surface of the ear plate positioning bracket 5 and clamped in the limit bracket 6, and the bracket sleeve 13 is clamped in the sleeve positioning bracket 8, so that the No. 1 limit pin 7 is inserted into the bracket ear plate 14, so that the No. 1 limit pin 7 limits the bracket ear plate 14 to be fixed in the limit bracket 6 , and the No. 2 limit pin 9 is inserted into the bracket sleeve 13, so that the No. 2 limit pin 9 limits and fixes the bracket sleeve 13 in the sleeve positioning bracket 8, and then the movable insertion rod 10 is inserted through the No. 2 limit pin 9 and the bracket sleeve 13, so that the movable insertion rod 10 again limits and fixes the No. 2 limit pin 9 and the bracket sleeve 13, which reflects the limiting and fixing effect of the No. 1 limit pin 7, the No. 2 limit pin 9 and the movable insertion rod 10 on the various components of the bracket.

[0024] Reference Figure 2 and Figure 4 A fixing plate 15 is symmetrically welded on one side edge of the outer surface of the bracket beam 11, and a limiting block 16 is fixedly installed on the upper surface of the weldment support frame 1 near the single beam positioning bracket 2. A first through hole is opened on one side edge of the fixing plate 15 and the limiting block 16, and a No. 3 limiting pin 17 is inserted into the fixing plate 15 and the limiting block 16 through the first through hole.

[0025] By symmetrically clamping the fixing plate 15 on the outer surface of the limit block 16, and inserting the No. 3 limit pin 17 through the fixing plate 15 and the limit block 16, the bracket beam 11 is fixed on the upper surface of the beam positioning bracket 2, which reflects the limiting and fixing effect of the limit block 16 and the No. 3 limit pin 17 on the bracket beam 11.

[0026] The implementation principle of the welding fixture of the excavator cab bracket in the embodiment of the present application is as follows: by placing the bracket crossbeam 11 on the upper surface of the crossbeam positioning bracket 2 to ensure side fit, the bracket side wall 12 is overlapped on the upper surface of the side wall positioning bracket 3, the bracket ear plate 14 is placed on the outer surface of the ear plate positioning bracket 5 and clamped in the limit bracket 6, and at the same time, the bracket sleeve 13 is clamped in the sleeve positioning bracket 8, so that the bracket crossbeam 11, the bracket side wall 12 and the bracket ear plate 14 are in a stable placement state as a whole on the upper surface of the weldment support frame 1, the No. 1 limit pin 7 is inserted into the bracket ear plate 14, so that the No. 1 limit pin 7 limits the bracket ear plate 14 to be fixed in the limit bracket 6, and the No. 2 limit pin 9 is inserted into the bracket sleeve 13, so that the No. 2 limit pin 9 limits the bracket sleeve 13 After being fixed in the sleeve positioning bracket 8, the movable plug rod 10 is inserted through the No. 2 limit pin 9 and the bracket sleeve 13, so that the movable plug rod 10 again limits and fixes the No. 2 limit pin 9 and the bracket sleeve 13, keeping the bracket sleeve 13 in a stable placement state inside the sleeve positioning bracket 8, and symmetrically clamping the fixing plate 15 on the outer surface of the limit block 16, and inserting the No. 3 limit pin 17 through the fixing plate 15 and the limit block 16, thereby fixing the bracket beam 11 to the upper surface of the beam positioning bracket 2; compared with the prior art, this solution has the effect of facilitating the fixing of the various components of the bracket on the upper surface of the weldment support frame 1, improving the stability of the various components of the bracket during welding, solving the problem of position offset of the various components of the bracket during welding, and improving the accuracy of the welding of the various components of the bracket.

[0027] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0028] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0029] Finally: 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.

[0030] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A welding fixture for an excavator cab bracket, comprising a weldment support frame (1), characterized in that: A beam positioning bracket (2) is symmetrically fixed to one end edge of the upper surface of the weld support frame (1), and side wall positioning brackets (3) are arranged in parallel on both sides of the upper end of the weld support frame (1). A plurality of positioning climbing blocks (4) are welded to the upper surface of the weld support frame (1) between the front and rear side wall positioning brackets (3). An ear plate positioning bracket (5) is symmetrically fixed to the upper surface of the weld support frame (1) near the front end edge. The upper end of the weld support frame (1) is fixed near the ear plate positioning bracket (5). A limiting bracket (6) is installed, and a No. 1 limiting latch (7) is movably installed on one side of the limiting bracket (6). A sleeve positioning bracket (8) is symmetrically fixed on the upper surface of the weldment support frame (1) at the back of the ear plate positioning bracket (5). A No. 2 limiting latch (9) is movably installed on the top of one side of the sleeve positioning bracket (8). Both sides of the top of the No. 2 limiting latch (9) are plugged with movable plug rods (10). A bracket mechanism is also installed on the upper surface of the weldment support frame (1) for limiting support of the excavator cab.

2. The welding fixture for the excavator cab bracket according to claim 1, characterized in that: The bracket mechanism comprises a bracket crossbeam (11), the bracket crossbeam (11) is placed on the upper surface of the weldment support frame (1), bracket side walls (12) are welded to both side edges of the bracket crossbeam (11), bracket sleeves (13) are symmetrically arranged on the top edge of the bracket side wall (12), and a bracket ear plate (14) is fixedly installed on one side edge of the bracket side wall (12) at the back of the bracket sleeve (13).

3. The welding fixture for the excavator cab bracket according to claim 2, characterized in that: A fixing plate (15) is symmetrically welded to one side edge of the outer surface of the bracket crossbeam (11); a limiting block (16) is fixedly installed on the upper surface of the weldment support frame (1) near the single crossbeam positioning bracket (2); a first through hole is provided through one side edge of the fixing plate (15) and the limiting block (16); and a No. 3 limiting pin (17) is inserted into the fixing plate (15) and the limiting block (16) through the first through hole.

4. The welding fixture for the excavator cab bracket according to claim 2, characterized in that: A second through hole is provided on the top of one side of the limiting bracket (6) and the edge of one side of the bracket ear plate (14), and the No. 1 limiting pin (7) is located inside the second through hole. The No. 1 limiting pin (7) and the second through hole are interlocked.

5. The welding fixture for the excavator cab bracket according to claim 2, characterized in that: A third through hole is provided on the top of one side of the bracket sleeve (13) and the sleeve positioning bracket (8), and the second limiting pin (9) is located inside the third through hole. A fourth through hole is provided on the middle of the top of the bracket sleeve (13) and on both sides of the upper surface of the second limiting pin (9), and the movable plug rod (10) is located inside the fourth through hole.

Images