A clamping device for welding a loader rear frame

Abstract

The utility model provides a kind of clamping device for loader rear frame welding, belong to clamping device technical field, including welding station, both sides of welding station are slidably set first slider, each first slider is rotatably set vertical pole, and the outer surface of each vertical pole is fixedly connected to set several horizontal poles;Several sliding rods are slidably set in each horizontal pole, and the end of each sliding rod away from horizontal pole is fixedly set clamping block, and each clamping block is equipped with elastic member between horizontal pole;Both slidingly set movable rod in vertical pole, and there is also driving assembly;Several slides are fixedly set on the outer surface of movable rod, and each slide is in corresponding horizontal pole;First limiting part is equipped on slide, and second limiting part is equipped on movable rod. By driving assembly, movable rod is driven to descend, not only can realize rigid locking of sliding rod by first limiting part, but also can realize the limiting locking of vertical pole and first slider by second limiting part. The whole clamping and locking process is coherent.

Description

Technical Field

[0001] This utility model belongs to the technical field of clamping devices, specifically relating to a clamping device for welding the rear frame of a loader. Background Technology

[0002] In the field of construction machinery manufacturing, the rear frame of a loader, as a key load-bearing component, is usually welded from thick steel plates. During the welding process, clamping devices are needed to fix the various components of the rear frame to the welding station to ensure stability during the welding process.

[0003] Currently, most clamping fixtures used in industrial production employ direct bolt tightening or screw-nut driven clamping methods. While these devices are simple in structure and low in cost, operators must manually rotate each clamping bolt or screw individually, requiring multiple rotations to ensure the end blocks contact and clamp the workpiece. This process is not only extremely time-consuming, extending production line cycle time, but also imposes a significant physical burden on operators, resulting in very high labor intensity. Therefore, there is an urgent need for a clamping device for welding the rear frame of a loader.

[0004] A patent with publication number CN220427360U discloses a clamping mold for welding vehicle frames. The mold includes a welding table, sliding blocks, threaded bolts, clamping studs, and a clamping disc. In use, the vehicle frame is placed on the welding table, the position of the sliding blocks is adjusted by sliding, and then the threaded bolts are rotated to limit and fix the position of the sliding blocks. Subsequently, the clamping studs are rotated to make the clamping disc tightly fit against the surface of the vehicle frame, thus clamping and fixing the frame.

[0005] However, the above solution requires manual rotation of multiple threaded bolts to lock the sliding block, and also manual rotation of multiple clamping studs to finally secure the frame. Due to the inherent structural characteristics of the threaded drive, each threaded bolt and clamping stud requires multiple rotations to effectively lock. This extensive and repetitive manual thread tightening operation results in low efficiency, excessive time consumption, and high labor intensity for workers, failing to meet the efficiency and convenience requirements of modern welding production lines. Utility Model Content

[0006] To address the problems existing in the background art, this utility model provides a clamping device for welding the rear frame of a loader.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A clamping device for welding the rear frame of a loader includes a welding table. First sliders are slidably mounted on both sides of the welding table. A vertical rod is rotatably mounted on each first slider. Several horizontal rods are fixedly connected to the outer surface of each vertical rod. Several sliding rods are slidably mounted within each horizontal rod. A clamping block is fixedly mounted at the end of each sliding rod away from the horizontal rod. An elastic element is provided between each clamping block and the horizontal rod. A movable rod is slidably mounted within each vertical rod, and a driving assembly is provided for the movable rod. Several sliding plates are fixedly mounted on the outer surface of the movable rod, and each sliding plate is slidably mounted within a corresponding horizontal rod. A first limiting element is provided on each sliding plate for the sliding rod, and a second limiting element is provided on each movable rod for the vertical rod and the first sliders.

[0009] Furthermore, the elastic element includes a spring, with the outer surface of the slide rod fitted with the spring, one end of the spring being fixedly connected to the crossbar, and the other end of the spring being fixedly connected to the clamping block.

[0010] Furthermore, the drive assembly includes an electric push rod, which is fixedly installed inside the vertical rod, and the telescopic shaft of the electric push rod is fixedly connected to the movable rod.

[0011] Furthermore, the first limiting member includes a limiting block, the limiting block is fixedly installed at the bottom of the slide plate, and a plurality of first limiting holes are opened at the top of the slide rod, with the limiting block engaging in a transmission cooperation with the plurality of first limiting holes.

[0012] Furthermore, a guide rod is fixedly installed inside the crossbar, and the sliding plate is slidably sleeved on the outer surface of the guide rod.

[0013] Furthermore, the second limiting member includes a second slider and a limiting rod. A second groove is formed on the outer surface of the vertical rod, and the second slider is slidably arranged in the second groove. One end of the second slider located inside the vertical rod is fixedly connected to the movable rod, and the limiting rod is fixedly arranged on the other end of the second slider located outside the vertical rod. A fixing block is fixedly arranged on the welding table, and a plurality of second limiting holes are formed on the fixing block. The limiting rod is in transmission cooperation with the plurality of second limiting holes.

[0014] Furthermore, a rubber layer is fixedly provided at the end of the clamping block that is not connected to the slide bar.

[0015] Furthermore, the bottom of the welding table is fixedly provided with support legs.

[0016] This application has the following beneficial effects:

[0017] This application allows the first slider to be slid to a suitable position, and then the vertical rod to be rotated. This, in turn, synchronously drives all the horizontal bars and sliders to move, causing the clamping blocks at the ends of the sliders to automatically adapt to the frame contour and pre-clamp with the assistance of elastic components, achieving rapid and adaptive initial positioning. Subsequently, the drive assembly lowers the movable rod, which not only uses the first limiting component to rigidly lock the slider, transforming the adaptive clamping into a stable and reliable rigid support, but also uses the second limiting component to limit and lock the vertical rod and the first slider. The entire clamping and locking process is seamless, eliminating the need for repetitive operations, significantly shortening clamping time, improving work efficiency, reducing the labor intensity of workers, and facilitating practical application. Attached Figure Description

[0018] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0019] Figure 1 This is the overall structural state of the utility model. Figure 1 ;

[0020] Figure 2 This is the overall structural state of the utility model. Figure 2 ;

[0021] Figure 3 This is a cross-sectional view of the utility model;

[0022] Figure 4 This is a utility model Figure 3 A magnified view of a portion of point A in the middle;

[0023] Figure 5 This is a utility model Figure 3 A magnified view of a portion of point B in the middle;

[0024] Figure 6 This is a utility model Figure 3 A magnified view of a portion of point C.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Support leg; 2. Welding table; 3. First slide groove; 4. Fixing block; 5. Second limiting hole; 6. First slider; 7. Slide plate; 8. Vertical rod; 9. Clamping block; 10. Spring; 11. First limiting hole; 12. Slide rod; 13. Horizontal rod; 14. Second slider; 15. Limiting rod; 16. Movable rod; 17. Second slide groove; 18. Electric push rod; 19. Guide rod; 20. Limiting block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] like Figures 1-6 As shown, the technical solution adopted by this utility model is as follows: A clamping device for welding the rear frame of a loader includes a welding table 2. Both sides of the welding table 2 are provided with first sliders 6 for limiting sliding. Each first slider 6 is provided with a vertical rod 8 for rotation. The outer surface of each vertical rod 8 is provided with several horizontal rods 13 for fixed connection. Several sliding rods 12 are provided through each horizontal rod 13 for limiting sliding. A clamping block 9 is provided at the end of each sliding rod 12 away from the horizontal rod 13. Each clamping block 9 is provided with an elastic element between it and the horizontal rod 13.

[0029] Specifically, the elastic element includes a spring 10. The outer surface of the slide bar 12 is fitted with a spring 10. One end of the spring 10 is fixedly connected to the crossbar 13, and the other end of the spring 10 is fixedly connected to the clamping block 9.

[0030] More specifically, a rubber layer is fixedly provided at the end of the clamping block 9 that is not connected to the slide bar 12. The rubber layer can not only play a protective role, but also improve the clamping stability.

[0031] Among them, the bottom of the welding table 2 is fixedly equipped with support leg 1.

[0032] The outer surface of the welding table 2 has a first groove 3 for the first slider 6 to slide.

[0033] It should be noted that the welding station 2 is a conventional prior art, and this application will not describe it in detail.

[0034] In addition, the vertical rod 8 is equipped with a movable rod 16 that is slidably limited, and a drive component that acts on the movable rod 16 is also provided inside it; a number of sliding plates 7 are fixedly provided on the outer surface of the movable rod 16, and the sliding plates 7 correspond one-to-one with the horizontal rod 13, and each sliding plate 7 is slidably limited inside the corresponding horizontal rod 13.

[0035] The slide plate 7 is provided with a first limiting member acting on the slide bar 12, and the movable rod 16 is provided with a second limiting member acting on the vertical rod 8 and the first slider 6.

[0036] Specifically, the drive assembly includes an electric push rod 18, which is fixedly installed inside the vertical rod 8, and the telescopic shaft of the electric push rod 18 is fixedly connected to the movable rod 16.

[0037] Specifically, such as Figure 4 As shown, the first limiting component includes a limiting block 20. The limiting block 20 is integrally fixedly installed at the bottom of the slide plate 7. A plurality of first limiting holes 11 are opened at the top of the slide rod 12. The plurality of first limiting holes 11 are evenly distributed along the length of the slide rod 12. The limiting block 20 and the plurality of first limiting holes 11 are in a transmission cooperation.

[0038] More specifically, a guide rod 19 is fixedly installed inside the crossbar 13, and the slide plate 7 is slidably sleeved on the outer surface of the guide rod 19 to improve the sliding stability of the slide plate 7.

[0039] Specifically, the second limiting component includes a second slider 14, a second groove 17 is opened on the outer surface of the vertical rod 8, and the second slider 14 is slidably limited in the second groove 17; one end of the second slider 14 located inside the vertical rod 8 is fixedly connected to the movable rod 16, and a limiting rod 15 is fixedly installed at the other end of the second slider 14 located outside the vertical rod 8.

[0040] A fixing block 4 is fixedly installed on the outer surface of the welding table 2. Several second limiting holes 5 are opened on the fixing block 4. The several second limiting holes 5 are evenly distributed along the length direction of the fixing block 4. The limiting rod 15 is in transmission cooperation with the several second limiting holes 5.

[0041] Working principle: such as Figure 2 As shown, the device is in the ready state. At this time, the movable rod 16 is in the raised position under the action of the electric push rod 18, the limiting block 20 is disengaged from the slide rod 12, and the limiting rod 15 is also disengaged from the second limiting hole 5. In this state, the vertical rod 8 can rotate freely, the first slider 6 can slide in the first slide groove 3, and all slide rods 12 can freely extend and retract within the horizontal rod 13 under the action of the spring 10.

[0042] In use, place the rear frame on the welding table 2, and slide the first sliders 6 on both sides according to the frame size, so that they move along the first slide groove 3 to the appropriate working position.

[0043] Subsequently, the vertical rod 8 is rotated, causing all the horizontal rods 13 fixedly connected to its outer surface to rotate synchronously. The horizontal rods 13 cause the internal sliding rods 12 and the end clamping blocks 9 to swing closer to the frame. When the clamping blocks 9 contact the side wall of the frame, under the action of the contact force, the sliding rods 12 overcome the elastic force of the springs 10, slide within the horizontal rods 13, and compress the springs 10. This process allows each sliding rod 12 to automatically adjust its extension length according to the frame profile until all the clamping blocks 9 are tightly attached to the frame surface under the reaction force of the springs 10.

[0044] Subsequently, the electric push rod 18 is activated, causing its telescopic shaft to retract and pull the movable rod 16 down inside the vertical rod 8.

[0045] On the one hand, when the movable rod 16 descends, it will cause all the slide plates 7 fixed on its outer surface to move down synchronously along the guide rod 19. The limiting block 20 at the bottom of the slide plate 7 will then be inserted into the corresponding first limiting hole 11 on the slide rod 12, thereby preventing the slide rod 12 from sliding.

[0046] On the other hand, as the movable rod 16 descends, the second slider 14 fixed thereon moves down along the second slide groove 17, causing the limiting rod 15 to move downward. The limiting rod 15 then inserts into the corresponding second limiting hole 5 of the fixed block 4 on the welding table 2. This action simultaneously locks the rotational degree of freedom of the vertical rod 8 and the sliding degree of freedom of the first slider 6.

[0047] At this point, the retraction of the telescopic shaft of an electric push rod 18 simultaneously locks the slide rod 12, the vertical rod 8, and the first slider 6, ensuring the stability of the entire clamping system during the welding process.

[0048] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A clamping device for welding the rear frame of a loader, characterized in that, The assembly includes a welding table (2), on both sides of which a first slider (6) is slidably mounted. Each first slider (6) is rotatably mounted with a vertical rod (8). The outer surface of each vertical rod (8) is fixedly connected with several horizontal rods (13). Each horizontal rod (13) is slidably mounted with several sliding rods (12). Each sliding rod (12) is fixedly mounted with a clamping block (9) at the end away from the horizontal rod (13). Each clamping block (9) is provided with an elastic element between itself and the horizontal rod (13). The vertical rod (8) is both slidably mounted with a movable rod (16) and has a driving component acting on the movable rod (16). The outer surface of the movable rod (16) is fixedly mounted with several sliding plates (7). Each sliding plate (7) is slidably mounted within the corresponding horizontal rod (13). The sliding plate (7) is provided with a first limiting element acting on the sliding rod (12), and the movable rod (16) is provided with a second limiting element acting on the vertical rod (8) and the first slider (6).

2. The clamping device for welding the rear frame of a loader according to claim 1, characterized in that, The elastic element includes a spring (10), and the outer surface of the slide bar (12) is fitted with the spring (10). One end of the spring (10) is fixedly connected to the crossbar (13), and the other end of the spring (10) is fixedly connected to the clamping block (9).

3. The clamping device for welding the rear frame of a loader according to claim 1, characterized in that, The drive assembly includes an electric push rod (18), which is fixedly installed inside the vertical rod (8), and the telescopic shaft of the electric push rod (18) is fixedly connected to the movable rod (16).

4. The clamping device for welding the rear frame of a loader according to claim 1, characterized in that, The first limiting component includes a limiting block (20). The limiting block (20) is fixedly installed at the bottom of the slide plate (7). The top of the slide rod (12) is provided with a plurality of first limiting holes (11). The limiting block (20) and the plurality of first limiting holes (11) are in transmission cooperation.

5. A clamping device for welding the rear frame of a loader according to claim 1, characterized in that, A guide rod (19) is fixedly installed inside the crossbar (13), and the slide plate (7) is slidably sleeved on the outer surface of the guide rod (19).

6. The clamping device for welding the rear frame of a loader according to claim 1, characterized in that, The second limiting component includes a second slider (14) and a limiting rod (15). A second groove (17) is opened on the outer surface of the vertical rod (8), and the second slider (14) is slidably arranged in the second groove (17). One end of the second slider (14) located inside the vertical rod (8) is fixedly connected to the movable rod (16), and the limiting rod (15) is fixedly arranged on the other end of the second slider (14) located outside the vertical rod (8). A fixing block (4) is fixedly arranged on the welding table (2), and a plurality of second limiting holes (5) are opened on the fixing block (4). The limiting rod (15) is in transmission cooperation with the plurality of second limiting holes (5).

7. A clamping device for welding the rear frame of a loader according to claim 1, characterized in that, The end of the clamping block (9) that is not connected to the slide bar (12) is fixedly provided with a rubber layer.

8. A clamping device for welding the rear frame of a loader according to claim 1, characterized in that, The bottom of the welding table (2) is fixedly provided with a support leg (1).

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