A welding fixture for a boarding ladder handrail rail

Abstract

The utility model relates to welding frock technical field, and disclose a kind of welding frock for boarding ladder handrail, including the mounting platform of fixed connection on the upper surface of chassis, the upper surface of mounting platform is connected with several crosspieces, the upper surface of several crosspieces is all fixedly connected with mounting block, the upper surface of another end of several mounting blocks is all set up V-shaped mouth of single pole placement, the upper surface of several mounting blocks is all fixedly connected with the fixed forceps of single pole in V-shaped mouth for fixed, two ends of chassis middle part are all fixedly connected with support block, and winding mechanism is connected between two support blocks, the output end of winding mechanism is connected with several moving assemblies, and the surface of several moving assemblies is all connected with traction rope.The kind of welding frock for boarding ladder handrail, by winding motor drive screw rod rotation, drive multiple moving assemblies synchronous winding traction rope, realize the disposable loosening of all fixed forceps, avoid the tedious process of traditional frock one by one disassembly clamp, greatly shorten disassembly time.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, specifically a welding fixture for a boarding ladder handrail. Background Technology

[0002] The boarding ladder handrail is a safety protection device installed on both sides of the boarding ladder. It is mainly used to ensure the safety and stability of people when walking on and off the ship, and to prevent falls due to slipping, swaying or wind and waves.

[0003] Each boarding ladder uses a large number of inner handrails, which are also relatively large in size. The welding work is extensive and the welding requirements are high, including requirements such as no deformation during welding. In combination with the workshop requirements and actual production conditions, welding fixtures are often needed when welding the inner handrails of the boarding ladder platform.

[0004] Patent CN204657827U discloses a welding fixture for a stepped handrail, comprising a parallelogram frame. A limiting block A is provided on one of the longer side frames of the parallelogram frame, and a support plate is provided on the other side frame A opposite to frame A'. A push block is provided on the side wall of frame A facing away from frame A', corresponding to the position of the support plate. Multiple connecting rods parallel to the diagonal frame are provided between frame A and frame A'. Limiting blocks B are provided on the upper surfaces of the diagonal frame and the connecting rods. The limiting blocks A, B, and push blocks are respectively provided with arc-shaped grooves A, B, and C. From the above structure, it can be seen that this welding fixture for a stepped handrail facilitates the fixing of round rods into a stepped handrail structure, making it easier for operators to weld the stepped handrail, thus improving welding efficiency and welding effect.

[0005] However, the welding fixtures mentioned above still have the following problems in actual use: Since boarding ladder handrails are usually composed of multiple rods, which are often arranged in a staggered manner (such as perpendicular or intersecting each other), multiple clamps are often required to fix each individual rod at the same time during the welding process. However, this clamping method requires the clamps to be removed and separated one by one after welding, which is cumbersome and results in low overall assembly and disassembly efficiency. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a welding fixture for boarding ladder handrails, which can release all the fixing clamps at once after the handrail is welded.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a welding fixture for a boarding ladder handrail, comprising a mounting platform fixedly connected to the upper surface of a base frame, several horizontal blocks connected to the upper surface of the mounting platform, mounting blocks fixedly connected to the upper surfaces of the horizontal blocks, a V-shaped opening for placing a single rod on the upper surface of the other end of the mounting blocks, and fixing clamps for fixing the single rod in the V-shaped opening fixedly connected to the upper surfaces of the mounting blocks, support blocks fixedly connected to both ends of the middle part of the base frame, a winding mechanism connected between the two support blocks, several moving components connected to the output end of the winding mechanism, traction ropes connected to the surfaces of the moving components, and the traction ropes respectively connected to the fixing clamps.

[0008] Furthermore, the winding mechanism includes a winding motor and a threaded rod. The outer wall of the winding motor is fixedly connected to the side wall of one of the support blocks. The output shaft of the winding motor is fixedly connected to one end of the threaded rod. The other end of the threaded rod passes through the two support blocks and several moving components and is rotatably connected to both support blocks.

[0009] Furthermore, the moving component includes a reel and two nuts. The reel is sleeved and slidably connected to the outer wall of the threaded rod. The outer wall of the middle part of the reel is fixedly connected to the end of the traction rope away from the fixing clamp. Both nuts are sleeved and threadedly connected to the surface of the threaded rod, and the two nuts are located on both sides of the reel.

[0010] Furthermore, the surface of the threaded rod is provided with several grooves, and the inner wall of the winding wheel is fixedly connected with several sliders, which are slidably connected to the grooves respectively.

[0011] Furthermore, an L-shaped block is fixedly connected to the end of the horizontal block away from the fixing clamp, and a U-shaped block is fixedly connected to the other side of the L-shaped block near the fixing clamp. A corner wheel is rotatably connected to the inner wall of the U-shaped block, the outer wall of the traction rope abuts against the surface of the corner wheel, and the traction rope also passes through the upper end of the L-shaped block. The traction rope is slidably connected to the L-shaped block.

[0012] Furthermore, the crossbar is detachably connected to the mounting platform by bolts.

[0013] Furthermore, the end of the base frame is also connected to another set of winding mechanisms, several moving components, several cross blocks, several mounting blocks, and several fixing clamps.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This welding fixture for boarding ladder handrails uses a winding motor to drive the threaded rod to rotate, which in turn drives multiple moving components to simultaneously wind up the traction rope, thereby releasing all the fixing clamps at once. This avoids the tedious process of disassembling the clamps one by one, as is the traditional fixture, and significantly shortens the disassembly time. 2. This welding fixture for boarding ladder handrails has a horizontal block that is detachably connected to the mounting platform by bolts. Its position can be flexibly adjusted according to the size of the handrail. In addition, the winding wheel in the moving component cooperates with the slider through the slide groove and is positioned by the nuts on both sides. Its position can be adjusted along the axial direction of the threaded rod to adapt to the single bar fixing requirements of different spacing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall appearance of the present utility model; Figure 2 This is a schematic diagram of the overall appearance of the present invention from another perspective; Figure 3 This is a detailed connection diagram of the winding mechanism, moving component, and fixing clamp of this utility model; Figure 4 This is an exploded view of the winding mechanism, moving components, and L-shaped block of this utility model.

[0016] In the diagram: 1. Mounting platform; 2. Base frame; 3. Support block; 4. Rewinding motor; 5. Horizontal block; 6. Mounting block; 7. Fixing clamp; 8. L-shaped block; 9. Traction rope; 10. Threaded rod; 11. Slide groove; 12. U-shaped block; 13. Nut; 14. Winding reel; 15. Corner wheel; 16. Slider. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Please see Figures 1-4 A welding fixture for a boarding ladder handrail includes a mounting platform 1 fixedly connected to the upper surface of a base frame 2. Several horizontal blocks 5 are connected to the upper surface of the mounting platform 1. Mounting blocks 6 are fixedly connected to the upper surfaces of the horizontal blocks 5. V-shaped openings for placing single rods are formed on the upper surfaces of the other ends of the mounting blocks 6. Fixing clamps 7 for fixing the single rods within the V-shaped openings are fixedly connected to the upper surfaces of the mounting blocks 6. Support blocks 3 are fixedly connected to both ends of the middle section of the base frame 2. A winding mechanism is connected between the two support blocks 3. Several moving components are connected to the output end of the winding mechanism. Traction ropes 9 are connected to the surfaces of the moving components. The traction ropes 9 are respectively connected to the fixing clamps 7.

[0019] like Figures 1 to 4As shown, when using the welding fixture for boarding ladder handrails in this utility model, firstly, according to the welding condition of the handrail, several horizontal blocks 5 are installed on the mounting platform 1. Then, a single rod is placed on the V-shaped opening of the mounting block 6. Then, the single rod in the V-shaped opening is fixed with fixing clamps 7 (at least two fixing clamps 7 are needed to fix the same single rod to improve stability). Then, the moving component and the traction rope 9 are adjusted to be parallel to the horizontal blocks 5. After that, all the single rods are aligned according to the welding requirements in the above manner and fixed stably with fixing clamps 7. Then, welding can be carried out in the conventional way (the welding method is not described in detail here). After welding is completed, simply turn on the winding mechanism. Once the winding mechanism is started, the moving component will rotate. The rotation of the moving component will gradually tighten the traction rope 9, thereby pulling up the pressing end of the fixing clamp 7, thus automatically separating the fixing clamp 7 from the single rod. Since all the fixing clamps 7 are connected to the winding mechanism through the moving component, all the fixing clamps 7 will open together, thus separating all the fixing clamps 7 at once, and then the welded handrail rod can be directly taken out. It should be noted that the fixing clamp 7 is existing technology, such as the GH-201 push-pull quick clamp, and will not be described in detail here.

[0020] As a preferred embodiment of the present invention, the winding mechanism includes a winding motor 4 and a threaded rod 10. The outer wall of the winding motor 4 is fixedly connected to the side wall of one of the support blocks 3. The output shaft of the winding motor 4 is fixedly connected to one end of the threaded rod 10. The other end of the threaded rod 10 passes through the two support blocks 3 and several moving components and is rotatably connected to both support blocks 3.

[0021] More specifically, when it is necessary to control the clamp 7 to release the limit on a single rod, simply turn on the take-up motor 4. Then the output shaft of the take-up motor 4 drives the threaded rod 10 to rotate. The rotation of the threaded rod 10 can drive all the moving components to rotate together, thereby tightening all the traction ropes 9 together, thus releasing all the clamps 7 at once. It should be noted that the winding motor 4 is used to ensure the synchronous tightening of several traction ropes 9. In actual application, the winding motor 4 can also be replaced by a knob or throttle, etc., to achieve the same effect. No specific limitation is made.

[0022] In a preferred embodiment of this invention, the movable component includes a reel 14 and two nuts 13. The reel 14 is sleeved and slidably connected to the outer wall of the threaded rod 10. The outer wall of the middle part of the reel 14 is fixedly connected to the end of the traction rope 9 away from the fixing clamp 7. The two nuts 13 are sleeved and threadedly connected to the surface of the threaded rod 10, and the two nuts 13 are respectively located on both sides of the reel 14. The surface of the threaded rod 10 is provided with a plurality of grooves 11, and the inner wall of the reel 14 is fixedly connected with a plurality of sliders 16, which are slidably connected to the grooves 11 respectively.

[0023] More specifically, when the threaded rod 10 rotates, due to the restriction of the sliding groove 11 and the slider 16, and with the clamping and limiting of the two nuts 13 on both sides of the winding wheel 14, the winding wheel 14 can only rotate with the threaded rod 10, so that the traction rope 9 can be gradually wound around the winding wheel 14 to complete the winding, while all the fixing clamps 7 are released. In addition, since different clamping clamps 7 may require different installation positions, if it is necessary to adjust the position of the clamping clamps 7, the two nuts 13 can be loosened, and then the position of the winding wheel 14 can be moved by the slide groove 11 and the slider 16. Finally, the winding wheel 14 can be tightened from both sides by the two nuts 13.

[0024] As a preferred embodiment of this utility model, an L-shaped block 8 is fixedly connected to the end of the horizontal block 5 away from the fixing clamp 7, and a U-shaped block 12 is fixedly connected to the other side of the L-shaped block 8 near the fixing clamp 7. A corner wheel 15 is rotatably connected to the inner wall of the U-shaped block 12, the outer wall of the traction rope 9 abuts against the surface of the corner wheel 15, and the traction rope 9 also passes through the upper end of the L-shaped block 8. The traction rope 9 and the L-shaped block 8 are slidably connected.

[0025] More specifically, by setting up L-shaped block 8, U-shaped block 12 and corner wheel 15, the traction rope 9 and the winding wheel 14 can be fixed relatively on a horizontal line, so as to avoid the traction rope 9 not moving along a specific trajectory when it changes from a loose state (during the normal limit of the fixing clamp 7, the traction rope 9 is in a loose state) to a taut state (the fixing clamp 7 is open and the winding wheel 14 is tightly wound around the traction rope 9), resulting in uneven force on several traction ropes 9; It should be noted here that since several traction ropes 9 are wound through the same threaded rod 10, it is necessary to ensure that the winding degree of each traction rope 9 is the same. This is also one of the reasons why it was previously required to ensure that the traction rope 9 and the cross block 5 are in a parallel state. Of course, in the actual welding process, for the same batch of railings, the positions of the horizontal block 5, the traction rope 9 and the fixing clamp 7 only need to be adjusted in advance before welding, and there is no need to adjust them again afterward, so it will not increase the adjustment time. In addition, a tensioning structure (which is existing technology, such as the tensioning structure commonly used in fabric production) can be provided at one end of the traction rope 9 near the winding wheel 14 to ensure that the traction rope 9 can be stably and accurately wound on the winding wheel 14.

[0026] As a preferred embodiment of this utility model, the horizontal block 5 is detachably connected to the mounting platform 1 by bolts.

[0027] More specifically, the position of the cross block 5 on the mounting platform 1 can be changed according to welding needs through the detachable connection; specifically, several equally spaced threaded holes can be opened on the mounting platform 1, and when it is necessary to change the position of the cross block 5, it can be fixed by bolts to the threaded holes at different positions.

[0028] As a preferred embodiment of this utility model, the end of the base frame 2 is also connected to another set of winding mechanism, several moving components, several horizontal blocks 5, several mounting blocks 6 and several fixing clamps 7.

[0029] More specifically, because during the welding of handrails (such as...) Figure 1 and Figure 2 In the case of the upper railing, there will inevitably be horizontally arranged single bars. Therefore, in order to fix the horizontally placed single bars, they can be fixed at the end of the base frame 2 [or at the middle of another axis of the base frame 2 (e.g.)]. Figure 1 and Figure 2 [The winding motor 4 is in a vertical position] Another winding mechanism, several moving components, several horizontal blocks 5, several mounting blocks 6 and several fixing clamps 7 are set up to fix the horizontal single rod in the same way (because the structure and position relationship are the same as those mentioned above, they are not described in detail in the text and the attached figure).

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding fixture for a boarding ladder handrail, comprising a mounting platform (1) fixedly connected to the upper surface of a base frame (2), characterized in that: The upper surface of the mounting platform (1) is connected to several horizontal blocks (5), and the upper surface of each of the horizontal blocks (5) is fixedly connected to a mounting block (6). The upper surface of the other end of each of the mounting blocks (6) is provided with a V-shaped opening for placing a single rod. The upper surface of each of the mounting blocks (6) is fixedly connected to a fixing clamp (7) for fixing the single rod in the V-shaped opening. The two ends of the middle part of the base frame (2) are fixedly connected to support blocks (3). A winding mechanism is connected between the two support blocks (3). The output end of the winding mechanism is connected to several moving components. The surface of each of the moving components is connected to a traction rope (9). The traction ropes (9) are respectively connected to several fixing clamps (7).

2. The welding fixture for a boarding ladder handrail according to claim 1, characterized in that: The winding mechanism includes a winding motor (4) and a threaded rod (10). The outer wall of the winding motor (4) is fixedly connected to the side wall of one of the support blocks (3). The output shaft of the winding motor (4) is fixedly connected to one end of the threaded rod (10). The other end of the threaded rod (10) passes through the two support blocks (3) and several moving components and is rotatably connected to both support blocks (3).

3. The welding fixture for a boarding ladder handrail according to claim 2, characterized in that: The moving assembly includes a reel (14) and two nuts (13). The reel (14) is sleeved and slidably connected to the outer wall of the threaded rod (10). The outer wall of the middle part of the reel (14) is fixedly connected to the end of the traction rope (9) away from the fixing clamp (7). The two nuts (13) are sleeved and threadedly connected to the surface of the threaded rod (10), and the two nuts (13) are located on both sides of the reel (14).

4. A welding fixture for a boarding ladder handrail according to claim 3, characterized in that: The surface of the threaded rod (10) is provided with several grooves (11), and the inner wall of the winding wheel (14) is fixedly connected with several sliders (16), and the sliders (16) are slidably connected to the grooves (11) respectively.

5. A welding fixture for a boarding ladder handrail according to claim 4, characterized in that: The horizontal block (5) is fixedly connected to an L-shaped block (8) at one end away from the fixing clamp (7). The L-shaped block (8) is fixedly connected to a U-shaped block (12) at the other end near the fixing clamp (7). The inner wall of the U-shaped block (12) is rotatably connected to a corner wheel (15). The outer wall of the traction rope (9) abuts against the surface of the corner wheel (15), and the traction rope (9) also passes through the upper end of the L-shaped block (8). The traction rope (9) is slidably connected to the L-shaped block (8).

6. A welding fixture for a boarding ladder handrail according to claim 5, characterized in that: The cross block (5) is detachably connected to the mounting platform (1) by bolts.

7. A welding fixture for a boarding ladder handrail according to claim 6, characterized in that: The end of the base frame (2) is also connected to another set of winding mechanism, several moving components, several cross blocks (5), several mounting blocks (6) and several fixing clamps (7).

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