Axle housing welding auxiliary positioning tool of speed reduction drive axle

Abstract

The utility model discloses an axle housing welding auxiliary positioning tool of a speed reduction drive axle, which relates to the technical field of axle housing welding and comprises a bottom plate and two groups of clamping structures, the two groups of clamping structures are respectively fixed on the left side and the right side of the top of the bottom plate, and each clamping structure comprises a clamping seat and a clamping cover. Groove bodies are formed in the clamping base and the clamping cover correspondingly, and a plurality of transverse rotating shafts are rotationally connected to the interiors of the groove bodies in the circumferential direction at equal intervals along the edge of the clamping groove. The axle arms at the two ends of the axle housing are placed at the upper ends of the clamping grooves of the clamping seats respectively, so that the outer walls of the axle arms are in contact with the clamping wheels, then the clamping cover is turned over, so that the clamping wheels on the clamping cover are in contact with the outer surfaces of the axle arms, and then the nut is in threaded connection with the upper end of the screw rod and screwed until the upper fixing plate is attached to the lower fixing plate. And after fixing, welding personnel can easily turn over the axle housing to replace the welding surface at any time.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge housing welding, in particular to an auxiliary positioning tool for welding the bridge housing of a reduction drive axle. Background Art

[0002] The bridge housing is a mounting matrix for the main reducer, differential, half axle and wheel assembly. Its main function is to support and protect the main reducer, differential and half axle, etc. The bridge housing is connected to the frame or carriage through longitudinally arranged leaf springs. It is an important part of the drive axle and also one of the main components of the running gear. During the production and manufacturing process of the bridge housing, welding of the bridge housing is required.

[0003] Due to the large weight and special shape of the bridge housing, the requirements for welding quality and welding accuracy are higher compared to the welding positions of other equipment. The existing tooling fixtures use bolts to position the two side clamping plates to hold and position both sides of the component, maintaining stability during the welding process.

[0004] However, the above-mentioned tooling fixture for welding automotive bridge housings has certain drawbacks during use. The welding accessories during use are relatively large. When welding large accessories like bridge housings, it is difficult to perform flipping and debugging. Moreover, during fixation, manual fixation is often required, which is time-consuming and laborious, and it is difficult to achieve the expected production efficiency, thus resulting in a decrease in output. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an auxiliary positioning tool for welding the bridge housing of a reduction drive axle to solve the technical problem that the positioning fixture in the prior art is not convenient for flipping the bridge housing.

[0006] The technical problem to be solved by the utility model can be achieved through the following technical solutions:

[0007] An auxiliary positioning tool for welding the bridge housing of a reduction drive axle includes a bottom plate, and a supporting structure is arranged on the top of the bottom plate. It further includes:

[0008] A clamping structure. There are two groups of the clamping structures, which are respectively fixed on the left and right sides of the top of the bottom plate. Each clamping structure includes a clamping seat and a clamping cover. One side of the clamping seat and the corresponding clamping cover is hinged through a hinge. The other side of the clamping seat is connected with a lower fixing plate, and the other side of the clamping cover is connected with an upper fixing plate. A connecting structure is cooperatively arranged between the lower fixing plate and the upper fixing plate. Clamping grooves are formed on the opposite surfaces of the clamping seat and the clamping cover. Grooves are formed on both the clamping seat and the clamping cover, and the grooves penetrate through to the clamping grooves. A number of transverse rotating shafts are rotatably connected along the edge of the clamping groove at equal intervals in the circumferential direction inside the grooves. One end of each rotating shaft is fixedly connected with a clamping wheel on the outside, and a gear is arranged on the outside of the other end. A positioning structure is cooperatively arranged between the gear and the groove.

[0009] As a further solution of the utility model: the positioning structure includes an arc-shaped tooth bar and a second hydraulic cylinder. A tooth groove is formed on one side of the arc-shaped tooth bar. The tooth groove of the arc-shaped tooth bar is matched with the teeth of the gear. The second hydraulic cylinder is vertically fixed at the bottom of the groove body, and the driving end of the second hydraulic cylinder is connected to the bottom of the arc-shaped tooth bar.

[0010] As a further solution of the utility model: a limiting rod is arranged at the bottom of the arc-shaped tooth bar, a limiting groove aligned with the limiting rod is arranged on the clamping seat, and the bottom of the limiting rod is inserted into the limiting groove.

[0011] As a further solution of the utility model: the supporting structure includes a first hydraulic cylinder and a placing seat. The placing seat is located between two clamping structures. A plurality of first hydraulic cylinders are arranged at the bottom of the placing seat. The placing seat is movably and cooperatively connected to the top of the bottom plate through the first hydraulic cylinder.

[0012] As a further solution of the utility model: a rubber sleeve is sleeved outside each clamping wheel.

[0013] As a further solution of the utility model: the connecting structure includes a screw rod and a nut. The screw rod is fixed at the top of the lower fixing plate. A clamping groove is formed on the side of the upper fixing plate away from the clamping cover. The screw rod is clamped inside the clamping groove. The nut is threadedly connected to the upper end of the screw rod and is matched with the clamping groove.

[0014] The beneficial effects of the utility model:

[0015] 1. For the utility model, the bridge arms at both ends of the axle housing are respectively placed at the upper end of the clamping groove of the clamping seat, so that the clamping wheels on the outer wall of the bridge arm are in contact. Then, the clamping cover is flipped, so that the clamping wheels on the clamping cover are in contact with the outer surface of the bridge arm. Then, the nut is threadedly connected to the upper end of the screw rod and screwed until the upper fixing plate and the lower fixing plate are attached. Since the clamping wheels rotate and fit on the outside of the bridge arm, after fixation, the welding personnel can easily flip the axle housing and change the welding surface at any time.

[0016] 2. By starting the second hydraulic cylinder to drive the arc-shaped tooth bar to move upward until the tooth groove of the arc-shaped tooth bar is engaged with the teeth of the gear, the utility model can prevent the bridge arm from driving the axle housing to rotate during the welding process. The setting of the positioning structure facilitates quickly fixing the axle housing at the selected position, which is more conducive to positioning and fixing the axle housing, and thus is beneficial to efficiently welding and fixing the axle housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following further describes the utility model with reference to the drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2Schematic diagram of the structure for the cooperation of the upper fixing plate and the lower fixing plate of the present utility model;

[0020] Figure 3 Schematic diagram of the structure for the connection and cooperation of the clamping wheel and the groove body of the present utility model;

[0021] Figure 4 Schematic diagram of the structure for the cooperation of the arc-shaped tooth bar and the gear of the present utility model.

[0022] In the figure: 1. Bottom plate; 2. Clamping seat; 3. Clamping cover; 4. First hydraulic cylinder; 5. Placing seat; 6. Groove body; 7. Rotating shaft; 8. Clamping wheel; 9. Rubber sleeve; 10. Gear; 11. Arc-shaped tooth bar; 12. Second hydraulic cylinder; 13. Limiting rod; 14. Limiting groove; 15. Lower fixing plate; 16. Upper fixing plate; 17. Screw; 18. Card slot; 19. Nut. Specific implementation manners

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0024] As Figures 1-4 shown, a welding auxiliary positioning tool for the axle housing of a reduction drive axle includes a bottom plate 1. A supporting structure is provided at the top of the bottom plate 1. The axle housing generally includes an axle housing body and axle arms. The supporting structure is used to support the bottom of the axle housing body. A clamping structure is also included;

[0025] There are two groups of clamping structures, which are respectively fixed on the left and right sides of the top of the bottom plate 1 and are used to clamp the two axle arms. Each clamping structure includes a clamping seat 2 and a clamping cover 3. One side of the clamping seat 2 and the corresponding clamping cover 3 is hinged through a hinge. The other side of the clamping seat 2 is fixedly connected with a lower fixing plate 15, and the other side of the clamping cover 3 is fixedly connected with an upper fixing plate 16. A connection structure is cooperatively provided between the lower fixing plate 15 and the upper fixing plate 16. Clamping grooves are opened on the opposite surfaces of the clamping seat 2 and the clamping cover 3. Groove bodies 6 are opened on both the clamping seat 2 and the clamping cover 3, and the groove bodies 6 penetrate through to the clamping grooves. A plurality of transverse rotating shafts 7 are rotatably connected to the inside of the groove bodies 6 along the edge of the clamping groove at equal intervals in the circumferential direction. One end of the rotating shaft 7 is fixedly connected with a clamping wheel 8 on the outside, and the clamping wheel 8 is attached to the outer wall of the axle arm. The other end is fixedly provided with a gear 10 on the outside. A positioning structure is cooperatively provided between the gear 10 and the groove body 6 to prevent the clamping wheel 8 from rotating during the welding process.

[0026] Place the bridge arms at both ends of the axle housing into the upper ends of the clamping grooves of the clamping seat 2 respectively, so that the clamping wheels 8 on the outer walls of the bridge arms are in contact. Then, turn over the clamping cover 3 and connect the upper fixing plate 15 and the lower fixing plate 16 with the connecting structure, so that the clamping wheels 8 on the clamping cover 3 are in contact with the outer surface of the bridge arm. Thus, several clamping wheels 8 can clamp on the outer surface of the bridge arm, which is convenient for the welding operator to easily turn over the axle housing and change the welding surface at any time.

[0027] In some specific implementation schemes, such as Figure 4 As shown, in order to facilitate the fixation of the clamping wheel 8, the positioning structure includes an arc-shaped toothed rod 11 and a second hydraulic cylinder 12. A tooth groove is formed on one side of the arc-shaped toothed rod 11. The arc-shaped toothed rod 11 is close to the gear 10, and the tooth groove of the arc-shaped toothed rod 11 engages with the teeth of the gear 10. The second hydraulic cylinder 12 is vertically and fixedly connected to the bottom of the groove body 6, and the driving end of the second hydraulic cylinder 12 is fixedly connected to the bottom of the arc-shaped toothed rod 11.

[0028] Start the second hydraulic cylinder 12 to drive the arc-shaped toothed rod 11 to move upward until the tooth groove of the arc-shaped toothed rod 11 engages with the teeth of the gear 10, so as to prevent the bridge arm from driving the axle housing to rotate during the welding process.

[0029] In some specific implementation schemes, such as Figure 4 As shown, in order to prevent the arc-shaped toothed rod 11 from shifting, a vertical limiting rod 13 is fixedly arranged at the bottom of the arc-shaped toothed rod 11. A limiting groove 14 aligned with the limiting rod 13 is formed on the clamping seat 2, and the bottom of the limiting rod 13 is inserted into the limiting groove 14.

[0030] In some specific implementation schemes, such as Figure 1 As shown, in order to facilitate the support of the bottom of the axle housing, the support structure includes a first hydraulic cylinder 4 and a placement seat 5. The placement seat 5 is located between the two clamping structures. A plurality of first hydraulic cylinders 4 are fixedly arranged at the bottom of the placement seat 5, and the placement seat 5 is movably connected to the top of the bottom plate 1 through the first hydraulic cylinders 4.

[0031] In some specific implementation schemes, such as Figure 3 As shown, in order to prevent the clamping wheel 8 from scratching the outer wall of the axle housing, a rubber sleeve 9 is fixedly sleeved on the outside of each clamping wheel 8, and the rubber sleeve 9 has a protective effect.

[0032] In some specific implementation schemes, such as Figure 2 As shown, in order to facilitate the clamping seat 2 and the clamping cover 3 to fix the axle housing, the connecting structure includes a screw rod 17 and a nut 19. The screw rod 17 is fixed to the top of the lower fixing plate 15. A clamping groove 18 is formed on the side of the upper fixing plate 16 away from the clamping cover 3. The screw rod 17 is clamped inside the clamping groove 18. The nut 19 is threadedly connected to the upper end of the screw rod 17 and cooperates with the clamping groove 18. By screwing the nut 19 threadedly connected to the screw rod 17 to press the upper fixing plate 16, the positions of the clamping seat 2 and the clamping cover 3 can be fixed.

[0033] For the convenience of those skilled in the art to understand the embodiments of this solution, the working principle of this solution will be briefly described below in combination with specific application scenarios:

[0034] During use, first, the axle housing of the drive axle needs to be lifted by a crane, and then the axle arms at both ends of the axle housing are respectively placed at the upper ends of the clamping grooves of the clamping seat 2, so that the clamping wheels 8 on the outer walls of the axle arms are in contact. The placing seat 5 can also be lifted by starting the first hydraulic cylinder 4 to support the axle housing, which plays a supporting role for the axle housing body. Then, the clamping cover 3 is flipped so that the screw rod 17 is inserted into the inner side of the clamping groove 18, so that the clamping wheels 8 on the clamping cover 3 are in contact with the outer surface of the axle arm. Then, the nut 19 is threadedly connected to the upper end of the screw rod 17 and screwed until the upper fixing plate 16 is in contact with the lower fixing plate 15. After fixing, the welder can easily flip the axle housing to change the welding surface at any time. During the flipping process, the first hydraulic cylinder 4 can be retracted to release the support of the placing seat 5 for the axle housing body, avoiding the placing seat 5 affecting the rotation of the axle housing during the rotation process.

[0035] After rotating to the appropriate position, start the second hydraulic cylinder 12 to drive the arc-shaped toothed rod 11 to move upward until the tooth grooves of the arc-shaped toothed rod 11 are engaged with the teeth of the gear 10, so as to prevent the axle arm from driving the axle housing to rotate during the welding process. The setting of the positioning structure facilitates quickly fixing the axle housing at the selected position, which is more conducive to positioning and fixing the axle housing, and thus is conducive to efficiently welding and fixing the axle housing. During this process, the limiting rod 13 slides along the limiting groove 14 to prevent the arc-shaped toothed rod 11 from shifting during movement. The rubber sleeve 9 plays a good protective role during the clamping process, preventing the clamping wheels 8 from scratching the outer surface of the axle arm.

[0036] The above has described several embodiments of the present invention in detail, but the embodiments of the present invention are not limited thereto and cannot be considered as used to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the present invention application should still fall within the scope covered by the patent of the present invention.

Claims

1. Auxiliary positioning tool for welding the axle housing of a reduction drive axle, including a bottom plate (1), wherein a supporting structure is arranged on the top of the bottom plate (1), characterized in that, Further included are: A clamping structure, with two sets of the clamping structures provided and respectively fixed on the left and right sides of the top of the bottom plate (1). Each clamping structure includes a clamping seat (2) and a clamping cover (3). One side of the clamping seat (2) and the corresponding clamping cover (3) is hinged by a hinge. The other side of the clamping seat (2) is connected to a lower fixing plate (15), and the other side of the clamping cover (3) is connected to an upper fixing plate (16). A connecting structure is cooperatively arranged between the lower fixing plate (15) and the upper fixing plate (16). Clamping grooves are formed on the opposite surfaces of the clamping seat (2) and the clamping cover (3). Grooves (6) are formed on both the clamping seat (2) and the clamping cover (3), and the grooves (6) penetrate through to the clamping grooves. A number of horizontal rotating shafts (7) are rotatably connected to the inside of the groove (6) along the edge of the clamping groove at equal intervals in the circumferential direction. One end of the rotating shaft (7) is fixedly connected to a clamping wheel (8) on the outside, and a gear (10) is arranged on the outside of the other end. A positioning structure is cooperatively arranged between the gear (10) and the groove (6).

2. The auxiliary positioning tool for welding the axle housing of the reduction drive axle according to claim 1, wherein, The positioning structure includes an arc-shaped toothed rod (11) and a second hydraulic cylinder (12). A tooth groove is formed on one side of the arc-shaped toothed rod (11), and the tooth groove of the arc-shaped toothed rod (11) is matched with the teeth of the gear (10). The second hydraulic cylinder (12) is vertically fixed at the bottom of the groove (6), and the driving end of the second hydraulic cylinder (12) is connected to the bottom of the arc-shaped toothed rod (11).

3. The auxiliary positioning tool for welding the axle housing of the reduction drive axle according to claim 2, characterized in that, A limiting rod (13) is arranged at the bottom of the arc-shaped toothed rod (11). A limiting groove (14) aligned with the limiting rod (13) is arranged on the clamping seat (2), and the bottom of the limiting rod (13) is inserted into the limiting groove (14).

4. The auxiliary positioning tool for welding the axle housing of the reduction drive axle according to claim 1, characterized in that, The supporting structure includes a first hydraulic cylinder (4) and a placing seat (5). The placing seat (5) is located between the two clamping structures. A number of first hydraulic cylinders (4) are arranged at the bottom of the placing seat (5), and the placing seat (5) is movably connected to the top of the bottom plate (1) through the first hydraulic cylinder (4).

5. The auxiliary positioning tool for welding the axle housing of the reduction drive axle according to claim 1, characterized in that, A rubber sleeve (9) is sleeved on the outside of each clamping wheel (8).

6. The welding auxiliary positioning tool for the axle housing of the reduction drive axle according to claim 1, characterized in that, The connecting structure includes a screw (17) and a nut (19). The screw (17) is fixed on the top of the lower fixing plate (15). A clamping groove (18) is formed on the side of the upper fixing plate (16) away from the clamping cover (3). The screw (17) is clamped inside the clamping groove (18), and the nut (19) is threadedly connected to the upper end of the screw (17) and is matched with the clamping groove (18).

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