Fixed transmission device for H-beam spot welding

Abstract

This utility model belongs to the field of steel structure production equipment, and particularly relates to a fixed transmission device for spot welding H-beams. It includes a roller conveyor frame for conveying H-beams, and a spot welding fixing mechanism is also provided on the roller conveyor frame. The spot welding fixing mechanism includes a portal frame covering the roller conveyor frame and a top plate cylinder disposed on the top of the portal frame. The power end of the top plate cylinder extends through the top of the portal frame and is connected to a lower pressure wheel assembly. A web plate cylinder is also provided on the portal frame, symmetrically arranged on both sides above the roller conveyor frame. The power end of the web plate cylinder is connected to a web plate wheel assembly for clamping the web. This utility model utilizes the roller conveyor frame to convey the H-beams and the spot welding fixing mechanism to achieve sliding fixing of the flanges and web of the H-beams, thereby facilitating the maintenance of the H-beam's shape during sliding and thus facilitating spot welding.

Description

Technical Field

[0001] This utility model belongs to the field of steel structure production equipment, and in particular relates to a fixed transmission device for spot welding of H-beams. Background Technology

[0002] H-beams are high-efficiency and economical structural steel profiles with an "H"-shaped cross-section. Due to their optimized structure and excellent mechanical properties, they are widely used in construction, bridges, machinery, and other fields. H-beams consist of a web (vertical section) and flanges (horizontal section). The flanges are parallel on both sides and have uniform thickness, forming a unique cross-section of "wide flanges and thin web." This design results in a significantly higher section modulus and moment of inertia compared to traditional I-beams, allowing them to bear greater loads with less weight and saving 10%-40% of steel.

[0003] With the rapid development of steel structures and prefabricated buildings, the specifications of H-beams are becoming larger and larger. For small-sized H-beams, the existing welding is mainly done by fixing with tooling to facilitate welding. However, for larger-sized H-beams, spot welding is performed first to form a preliminary fixation before welding. Therefore, this utility model is proposed to facilitate spot welding. Utility Model Content

[0004] This utility model addresses the technical problems existing in the spot welding of large-size H-beams by proposing a fixed transmission device for spot welding of H-beams that is reasonably designed, simple in structure, easy to process, and facilitates spot welding of large-size H-beams.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a fixed conveying device for spot welding H-beams, including a roller conveyor frame for conveying H-beams. A spot welding fixing mechanism is also provided on the roller conveyor frame. The spot welding fixing mechanism includes a portal frame covering the roller conveyor frame and a top plate cylinder disposed on the top of the portal frame. The power end of the top plate cylinder extends through the top of the portal frame and is connected to a lower pressure roller assembly. A web plate cylinder is also provided on the portal frame, symmetrically arranged on the roller conveyor frame. On both sides above the conveyor, the power end of the web cylinder is connected to a web wheel assembly for clamping the web. A drive motor is also provided below the roller conveyor. The drive motor is positioned upwards and connected to a drive gear. Drive racks mesh on both sides of the drive gear. A bottom plate clamping rod is provided on the back of the drive rack. The bottom plate clamping rod is L-shaped. A bottom plate wheel assembly is provided on the top of the bottom plate clamping rod. The lower pressure roller assembly, the web wheel assembly, and the bottom plate wheel assembly all include a U-shaped connecting seat and a roller rotatably mounted on the connecting seat.

[0006] Preferably, the top plate cylinder is a long-stroke hydraulic cylinder.

[0007] Preferably, the roller conveyor frame is provided with at least two spaced spot welding fixing mechanisms.

[0008] Preferably, several spot welding fixing mechanisms share a single drive motor and are connected and driven by an angle commutator.

[0009] Compared with the prior art, the advantages and positive effects of this utility model are as follows: This utility model provides a fixed transmission device for spot welding of H-beams. It uses a roller conveyor to transport the H-beams and a spot welding fixing mechanism to slide and fix the flanges and webs of the H-beams, thereby facilitating the maintenance of the shape of the H-beams during sliding and thus making spot welding easier. At the same time, this utility model has a simple structure, is easy to process, and is suitable for large-scale promotion and use. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the fixed transmission device for spot welding H-beams provided in Example 1; Figure 2 This is a schematic diagram of the spot welding fixing mechanism provided in Example 1; In the above figures, 1. Roller conveyor frame; 2. Spot welding fixing mechanism; 21. Portal frame; 22. Top plate cylinder; 23. Lower pressure roller assembly; 231. Connecting seat; 232. Roller; 233. Connecting plate; 24. Web plate cylinder; 25. Web plate wheel assembly; 26. Drive motor; 27. Angle reversing device; 271. Drive gear; 28. Bottom plate clamping rod; 281. Drive rack; 29. ​​Bottom plate wheel assembly. Detailed Implementation

[0012] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0013] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0014] Example 1, such as Figure 1 , Figure 2 As shown, this embodiment aims to provide a device for convenient spot welding of large-sized H-beams. To this end, the fixed transmission device for spot welding of H-beams provided in this embodiment includes a roller 232 conveyor frame 1 for conveying H-beams. In this embodiment, the purpose of using the roller 232 conveyor frame 1 is twofold: one is that for conveying large-sized H-beams, it needs to have a certain supporting force; the other is to reduce labor intensity, as the conveying method allows the workers to spot weld the entire H-beam without moving.

[0015] To secure the unformed H-beams, in this embodiment, a spot welding fixing mechanism 2 is also provided on the roller 232 conveyor frame 1. At least two spot welding fixing mechanisms 2 are required, and they are not located near either end of the roller 232 conveyor frame 1 (where "ends" refers to the additional unpowered conveyor rollers needed to receive the spot-welded H-beams). This placement away from the ends allows for better sliding and fixing of the spot welding fixing mechanism 2.

[0016] Considering that before the H-beam is formed, it consists of two upper and lower flanges and a web vertically positioned between the two flanges, it is necessary to fix the flanges and web while ensuring that they can move under the action of the roller 232 conveyor frame 1. Therefore, the spot welding fixing mechanism 2 includes a portal frame 21 covering the roller 232 conveyor frame 1 and a top plate cylinder 22 positioned on top of the portal frame 21. The portal frame 21 can be considered as two columns and a crossbeam between the two columns. The columns are positioned on both sides of the roller 232 conveyor frame 1, while the top plate cylinder 22 is positioned on the crossbeam. The power end of the top plate cylinder 22 extends through the top of the portal frame 21, and the power end of the top plate cylinder 22 is connected to a pressure roller assembly 23, thus realizing the downward pressure action on the top flange.

[0017] To achieve clamping of the web plate, a web plate cylinder 24 is also provided on the portal frame 21. The web plate cylinder 24 is mounted on the column, so that the web plate cylinders 24 are symmetrically arranged on both sides above the roller 232 conveyor frame 1. A web plate wheel assembly 25 for clamping the web plate is connected to the power end of the web plate cylinder 24. In this way, through the movement of the web plate cylinder 24, the two web plate wheel assemblies 25 achieve sliding clamping of the web plate. In this embodiment, the web plate cylinder 24 is also a hydraulic cylinder.

[0018] To achieve sliding limit of the bottom wing plate, and considering that the bottom wing plate is mainly for limiting and does not require much clamping force, a drive motor 26 is also set below the roller 232 conveyor frame 1. The drive motor 26 is set upward and connected to a drive gear 271. Drive racks 281 mesh on both sides of the drive gear 271. A bottom plate clamping rod 28 is set on the back of the drive rack 281. The bottom plate clamping rod 28 is L-shaped and a bottom plate wheel assembly 29 is set on the top of the bottom plate clamping rod. In this way, with the cooperation of the drive gear 271 and the drive rack 281, the bottom plate wheel assembly 29 can move towards or away from each other. Because the two bottom plate wheel assemblies 29 are staggered, the limiting distance is extended, so that the limiting effect remains reliable even if the H-beam moves away from one spot welding fixing mechanism 2. In this embodiment, in order to ensure the stability of the drive rack 281, a slider is installed at the bottom of the base plate clamping rod 28, and a connecting rod is provided on the frame of the roller 232 conveying frame 1. A track that cooperates with the slider is installed on the connecting rod, thereby ensuring the stability of the drive rack 281.

[0019] To achieve sliding fixation, in this embodiment, the lower pressure wheel assembly 23, the web wheel assembly 25, and the bottom plate wheel assembly 29 all include a U-shaped connecting seat 231 and a roller 232 rotatably mounted on the connecting seat 231. This allows for fixation or limiting without affecting movement.

[0020] To avoid interference during the placement of the wing plates and web plates, in this embodiment, the top plate cylinder 22 is a long-stroke hydraulic cylinder. This allows the lower pressure roller assembly 23 to rise and fall higher, providing more space for placement and facilitating installation. Furthermore, to ensure the stability of the lower pressure roller assembly 23's lifting and lowering, connecting plates 233 are provided on both sides of the connecting seat 231 of the lower pressure roller assembly 23. Slider blocks are mounted on the connecting plates 233, and rails are provided on the column, thereby ensuring the stability of the lower pressure roller assembly 23's lifting and lowering.

[0021] To reduce costs, several spot welding fixing mechanisms 2 share a single drive motor 26, which is connected and drives the drive gear 271 via an angle commutator 27. The angle commutator 27 is a T-type converter that can achieve both horizontal and vertical outputs, while the drive gear 271 is mounted on the vertical output shaft of the angle commutator 27. Adjacent spot welding fixing mechanisms 2 are connected via the horizontal output of the angle commutator 27. In this way, synchronous control of the base plate wheel assembly 29 can be achieved with a single motor.

[0022] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A fixed conveying device for spot welding H-beams, comprising a roller conveyor frame for conveying the H-beams, characterized in that, The roller conveyor frame is also equipped with a spot welding fixing mechanism, which includes a portal frame covering the roller conveyor frame and a top plate cylinder set on the top of the portal frame. The power end of the top plate cylinder is set through the top of the portal frame and is connected to a lower pressure roller assembly. The portal frame is also equipped with a web plate cylinder, which is symmetrically arranged on both sides above the roller conveyor frame. The power end of the web plate cylinder is connected to a web plate wheel assembly for clamping the web plate. A drive motor is also set below the roller conveyor frame. The drive motor is set with its power facing upward and is connected to a drive gear. Drive racks mesh on both sides of the drive gear. A bottom plate clamping rod is set on the back of the drive rack. The bottom plate clamping rod is L-shaped and a bottom plate wheel assembly is set on the top of the bottom plate clamping rod. The lower pressure roller assembly, the web plate wheel assembly, and the bottom plate wheel assembly all include a U-shaped connecting seat and a roller rotatably set on the connecting seat.

2. The fixed transmission device for H-beam spot welding according to claim 1, characterized in that, The top plate cylinder is a long-stroke hydraulic cylinder.

3. The fixed transmission device for H-beam spot welding according to claim 2, characterized in that, The roller conveyor frame is provided with at least two spaced spot welding fixing mechanisms.

4. The fixed transmission device for H-beam spot welding according to claim 3, characterized in that, Several spot welding fixing mechanisms share a single drive motor and are connected and driven by an angle commutator.

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