A clamping device for welding special-shaped steel pipes

Abstract

The utility model discloses a kind of clamping devices for special-shaped steel pipe welding, it is related to clamping device technical field, including two mounting plates and workbench, two The mounting plate is located above workbench, the workbench outside is fixedly connected with clamping assembly, the clamping assembly includes telescopic electric jar fixedly connected in the inner wall of workbench top, the telescopic electric jar output end is fixedly connected with connecting column, the connecting column top outer wall is fixedly connected with connecting rod two, connecting rod two outside is slidably connected with connecting rod one, two The mounting plate inside is all set with one horizontal limit slot, two The limit slot inside is slidably connected with one moving block, the utility model is set by setting clamping assembly, can be realized two special-shaped pipe be stable clamped up at the same time, to be welded part will also be exposed to outside, to ensure that welding work is carried out enough convenient, and ensure that the connection of two pipe is more closely.

Description

Technical Field

[0001] This utility model relates to the field of clamping device technology, specifically a clamping device for welding irregular steel pipes. Background Technology

[0002] As the manufacturing industry develops towards higher precision and efficiency, some special applications require the use of special-shaped steel pipes, such as triangular, polygonal, and reducing pipe structures, which are increasingly widely used in the automotive, aerospace, and engineering machinery industries.

[0003] A search revealed a utility model patent with Chinese patent publication number CN221676241U, which discloses a clamping device for welding irregularly shaped steel pipes. The device includes a base, a first telescopic rod fixedly connected to the upper surface of the base, a mounting seat fixedly connected to the end of the first telescopic rod away from the base, a mounting plate fixedly connected to the upper surface of the mounting seat, a vertical plate fixedly connected to the upper surface of the mounting seat, a second telescopic rod fixedly connected to the side surface of the vertical plate, a push rod fixedly connected to the end of the second telescopic rod away from the vertical plate, and a ball bearing rotatably connected to the side surface of the push rod.

[0004] The aforementioned device uses a rotating plate to clamp two steel pipes. However, this structure obstructs the welding position of the two pipes. After welding the unobstructed part, the steel pipes must be removed and welded again, which is inconvenient and can also cause the weld to be interrupted, affecting the aesthetics. Utility Model Content

[0005] The purpose of this utility model is to provide a clamping device for welding irregular steel pipes, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a clamping device for welding irregularly shaped steel pipes, comprising two mounting plates and a worktable. Both mounting plates are located above the worktable. A clamping assembly is fixedly connected to the outside of the worktable. The clamping assembly includes a telescopic electric cylinder fixedly connected to the inner wall of the top of the worktable. A connecting column is fixedly connected to the output end of the telescopic electric cylinder. A second connecting rod is fixedly connected to the outer wall of the top of the connecting column. A first connecting rod is slidably connected to the outside of the second connecting rod. A horizontally set limiting groove is opened inside each of the two mounting plates. A moving block is slidably connected inside each of the two limiting grooves. The first connecting rod and the second connecting rod are fixedly connected to the two moving blocks respectively. A fitting structure is fixedly connected to the outside of the connecting column. A contact assembly is fixedly connected to the top of each of the two mounting plates.

[0007] As a further preferred embodiment of this technical solution, the fitting structure includes a push rod fixedly connected to the outer wall of one side of the connecting column. Two horizontally arranged guide rods are fixedly connected inside the worktable. One end of each of the two guide rods is fixedly connected to the same support base. A contact groove is provided on the outer wall of one end of the support base. One end of the push rod contacts the contact groove. A reset member is provided on the outside of the two guide rods. One of the mounting plates is fixedly connected to one side of the top outer wall of the worktable, and the other mounting plate is fixedly connected to the top outer wall of the support base.

[0008] This system allows for the stable clamping of two irregularly shaped pipes while exposing the parts to be welded, ensuring convenient welding and a tighter connection between the two pipes. Activating the telescopic electric cylinder inside the mounting plate moves the connecting column towards the worktable. The connecting column then moves connecting rod one and connecting rod two synchronously, each moving two moving blocks closer to the pipes. The two pipes are then tightly clamped, with the connection point positioned between the two mounting plates, ensuring unobstructed welding. As the connecting column begins to move, the push rod fixed externally also moves synchronously. The push rod presses against a contact groove, which is connected to the support base via a connecting rod or inclined plane, pushing the support base closer to the mounting plate. The pipe above the support base then contacts the other pipe, ensuring a close fit after clamping, which improves the welding quality of the final product.

[0009] As a further preferred embodiment of this technical solution, the reset component includes a spring sleeved on the outside of the guide rod, with both ends of the spring fixedly connected to the worktable and the support base, respectively.

[0010] As a further preferred embodiment of this technical solution, the contact assembly includes two hinge seats fixedly connected to the top outer wall of the mounting plate and the movable block. Each of the two hinge seats is rotatably connected to a contact plate. Each of the two contact plates has a mounting groove inside. Each of the two mounting grooves is slidably connected to a guide post inside. Each of the two guide posts is fixedly connected to a limiting structure outside.

[0011] As a further preferred embodiment of this technical solution, the limiting structure includes a movable frame fixedly connected to the outside of the guide post, a support plate fixedly connected to one side of the outer wall of the hinge seat, the movable frame slidably connected to the inside of the support plate, and a lead screw rotatably connected to one side of the outer wall of the support plate, the lead screw being threadedly connected to the inside of the movable frame.

[0012] First, adjust the angle of the contact plate according to the shape of the irregular pipe. Then, manually drive the screw to rotate. The screw will drive the moving frame to slide along the support plate. The guide column fixed at the end of the moving frame will also start to move synchronously. The guide column drives the contact plate to rotate inside the hinge seat through the mounting groove, so that the device can adapt to the fixing of irregular pipes with different inclination angles, which is beneficial to improving the adaptability of the device.

[0013] As a further preferred embodiment of this technical solution, a first clearance groove is provided in the middle of one of the contact plates, and a second clearance groove is provided on both outer walls of the other contact plate, with the first clearance groove and the two second clearance grooves being staggered.

[0014] As a further preferred embodiment of this technical solution, the thread helix angle of the external thread of the lead screw is smaller than the equivalent friction angle.

[0015] This utility model provides a clamping device for welding irregularly shaped steel pipes, which has the following advantages: (1) By setting up a clamping component, this utility model can stably clamp two irregular pipes while exposing the part to be welded to the outside, thus ensuring that the welding work is convenient enough and that the connection between the two pipes is tighter. When the switch of the telescopic electric cylinder inside the mounting plate is turned on, the telescopic electric cylinder drives the connecting column to move towards the workbench. The connecting column drives the connecting rod one and the connecting rod two to move synchronously. The connecting rod one and the connecting rod two respectively drive the two moving blocks to move closer to the pipe. Then the two pipes will be tightly clamped, and the connection part of the two pipes will be in the middle of the two mounting plates, which will not hinder the welding work. When the connecting column starts to move, the push rod fixed outside it will also move synchronously. The push rod squeezes the contact groove, and the contact groove is connected to the support seat through a connecting rod or inclined plane, so that the support seat will be pushed closer to the mounting plate. The pipe above the support seat will also contact the other pipe, ensuring that the two pipes will remain in a close fit after being clamped, which is beneficial to improving the welding quality of the subsequent finished product.

[0016] (2) By setting up a contact component, the angle of the contact plate is first adjusted according to the shape of the irregular pipe. The screw is manually driven to rotate, and the screw can drive the moving frame to slide along the support plate. The guide column fixed at the end of the moving frame also begins to move synchronously. The guide column drives the contact plate to rotate inside the hinge seat through the mounting groove, so that the device can adapt to the fixing of irregular pipes with different inclination angles, which is beneficial to improving the adaptability of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model; Figure 2This is a schematic diagram of the overall second-view structure of this utility model; Figure 3 This is a partially enlarged structural diagram of the clamping component of this utility model; Figure 4 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle; In the diagram: 1. Mounting plate; 2. Workbench; 3. Clamping assembly; 4. Contact assembly; 301. Limiting groove; 302. Moving block; 303. Connecting rod one; 304. Connecting rod two; 305. Connecting column; 306. Telescopic electric cylinder; 307. Push rod; 308. Support base; 309. Contact groove; 310. Guide rod; 311. Spring; 401. Hinge seat; 402. Contact plate; 403. Mounting groove; 404. Support plate; 405. Moving frame; 406. Guide column; 407. Lead screw. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] This utility model provides a technical solution: such as Figure 2 and Figure 3 As shown in this embodiment, a clamping device for welding irregular steel pipes includes two mounting plates 1 and a workbench 2. Both mounting plates 1 are located above the workbench 2. A clamping assembly 3 is fixedly connected to the outside of the workbench 2. The clamping assembly 3 includes a telescopic electric cylinder 306 fixedly connected to the inner wall of the top of the workbench 2. A connecting column 305 is fixedly connected to the output end of the telescopic electric cylinder 306. A connecting rod 304 is fixedly connected to the outer wall of the top of the connecting column 305. A connecting rod 303 is slidably connected to the outside of the connecting rod 304. A horizontally set limiting groove 301 is opened inside each of the two mounting plates 1. A moving block 302 is slidably connected inside each of the two limiting grooves 301. The connecting rod 303 and the connecting rod 304 are fixedly connected to the two moving blocks 302 respectively. A fitting structure is fixedly connected to the outside of the connecting column 305. A contact assembly 4 is fixedly connected to the top of each of the two mounting plates 1.

[0020] The fitting structure includes a push rod 307 fixedly connected to the outer wall of one side of the connecting column 305. Two horizontally arranged guide rods 310 are fixedly connected inside the worktable 2. One end of each guide rod 310 is fixedly connected to the same support base 308. A contact groove 309 is opened on the outer wall of one end of the support base 308. One end of the push rod 307 contacts the contact groove 309. Reset members are provided on the outside of the two guide rods 310. One mounting plate 1 is fixedly connected to one side of the top outer wall of the worktable 2, and the other mounting plate 1 is fixedly connected to the top outer wall of the support base 308.

[0021] The reset component includes a spring 311 sleeved on the outside of the guide rod 310. The two ends of the spring 311 are fixedly connected to the worktable 2 and the support seat 308 respectively, so that the spring 311 will not affect the movement of the support seat 308. After the support seat 308 is no longer subjected to external force, the spring 311 can push the support seat 308 back to its original position.

[0022] Turn on the switch of the telescopic electric cylinder 306 inside the mounting plate 1. The telescopic electric cylinder 306 drives the connecting column 305 to move closer to the worktable 2. The connecting column 305 drives the connecting rod 1 303 and the connecting rod 2 304 to move synchronously. The connecting rod 1 303 and the connecting rod 2 304 respectively drive the two moving blocks 302 to move closer to the pipe. Then the two pipes will be tightly clamped, and the connection part of the two pipes will be in the middle of the two mounting plates 1, which will not hinder the welding work. When the connecting column 305 starts to move, the push rod 307 fixed outside it will also move synchronously. The push rod 307 squeezes the contact groove 309. The contact groove 309 is connected to the support seat 308 through a connecting rod or inclined plane, so that the support seat 308 will be pushed closer to the mounting plate 1. The pipe above the support seat 308 will also contact the other pipe, ensuring that the two pipes remain in a close fit after being clamped, which is beneficial to improving the welding quality of the subsequent finished product.

[0023] like Figure 1 As shown in Figure 2, the contact assembly 4 includes two hinge seats 401 fixedly connected to the top outer wall of the mounting plate 1 and the moving block 302. Each of the two hinge seats 401 is rotatably connected to a contact plate 402. Each of the two contact plates 402 has a mounting groove 403 inside. Each of the two mounting grooves 403 is slidably connected to a guide post 406. Each of the two guide posts 406 is fixedly connected to a limiting structure outside.

[0024] The limiting structure includes a movable frame 405 fixedly connected to the outside of the guide post 406, a support plate 404 fixedly connected to one side of the outer wall of the hinge seat 401, the movable frame 405 slidably connected to the inside of the support plate 404, and a lead screw 407 rotatably connected to one side of the outer wall of the support plate 404, the lead screw 407 being threadedly connected to the inside of the movable frame 405.

[0025] First, adjust the angle of the contact plate 402 according to the shape of the irregular pipe. Then, manually drive the lead screw 407 to rotate. The lead screw 407 can drive the moving frame 405 to slide along the support plate 404. The guide post 406 fixed at the end of the moving frame 405 also begins to move synchronously. The guide post 406 drives the contact plate 402 to rotate inside the hinge seat 401 through the mounting groove 403, so that the device can adapt to the fixing of irregular pipes with different inclination angles, which is beneficial to improving the adaptability of the device. It is worth noting that this device can adapt to the clamping of circular pipes and irregular pipes with flat surfaces.

[0026] like Figure 1 As shown in Figure 2, a first clearance groove is provided in the middle of one of the contact plates 402, and a second clearance groove is provided on both outer walls of the other contact plate 402. The first clearance groove and the two second clearance grooves are staggered, so that the two contact plates 402 can cross each other, thereby enabling the device to adapt to smaller pipe clamping operations and improving the adaptability of the device.

[0027] like Figure 1 As shown in Figure 2, the thread helix angle of the external thread of the lead screw 407 is less than the equivalent friction angle, giving it a self-locking property and ensuring that the position of the end frame 405 connected to it will not change due to the clamping reaction force.

[0028] This utility model provides a clamping device for welding irregularly shaped steel pipes, the specific working principle of which is as follows: When the device is working, the angle of the contact plate 402 is first adjusted according to the shape of the irregular pipe. The screw 407 is manually driven to rotate, and the screw 407 can drive the moving frame 405 to slide along the support plate 404. The guide column 406 fixed at the end of the moving frame 405 also begins to move synchronously. The guide column 406 drives the contact plate 402 to rotate inside the hinge seat 401 through the mounting groove 403, so that the device can adapt to the fixing of irregular pipes with different inclination angles, which is beneficial to improving the adaptability of the device. It is worth noting that this device can adapt to the clamping of circular pipes and irregular pipes with flat surfaces.

[0029] Next, place the two pipes to be welded on top of the two mounting plates 1 respectively, ensuring that the two pipes first contact the outer wall of the fixed contact plate 402 to achieve initial positioning. Then, activate the switch of the telescopic electric cylinder 306 inside the mounting plate 1. The telescopic electric cylinder 306 moves the connecting column 305 towards the worktable 2. The connecting column 305 moves the connecting rod 1 303 and the connecting rod 2 304 synchronously. The connecting rod 1 303 and the connecting rod 2 304 respectively move the two moving blocks 302 closer to the pipes. Subsequently, the two pipes are tightly clamped together, and the connection part of the two pipes... The connecting column 305 will be positioned between the two mounting plates 1, without obstructing the welding process. When the connecting column 305 begins to move, the push rod 307 fixed to its exterior will also move synchronously. The push rod 307 will press the contact groove 309, which is connected to the support base 308 through a connecting rod or inclined plane, thus pushing the support base 308 closer to the mounting plate 1. The pipe above the support base 308 will also come into contact with the other pipe, ensuring that the two pipes remain in a close fit after being clamped, which is beneficial to improving the welding quality of the subsequent finished product.

[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 clamping device for welding irregularly shaped steel pipes, comprising two mounting plates (1) and a worktable (2), wherein both mounting plates (1) are located above the worktable (2), characterized in that: The workbench (2) is fixedly connected to a clamping assembly (3). The clamping assembly (3) includes a telescopic electric cylinder (306) fixedly connected to the inner wall of the top of the workbench (2). The output end of the telescopic electric cylinder (306) is fixedly connected to a connecting column (305). The outer wall of the top of the connecting column (305) is fixedly connected to a connecting rod two (304). The connecting rod two (304) is slidably connected to a connecting rod one (303). Each of the two mounting plates (1) has a horizontally set limiting groove (301). Each of the two limiting grooves (301) is slidably connected to a moving block (302). The connecting rod one (303) and the connecting rod two (304) are fixedly connected to the two moving blocks (302) respectively. The connecting column (305) is fixedly connected to a fitting structure. Each of the two mounting plates (1) has a contact assembly (4) fixedly connected to its top.

2. The clamping device for welding irregularly shaped steel pipes according to claim 1, characterized in that: The fitting structure includes a push rod (307) fixedly connected to the outer wall of one side of the connecting column (305). The worktable (2) is fixedly connected to two horizontally arranged guide rods (310). One end of the two guide rods (310) is fixedly connected to the same support base (308). One end of the support base (308) has a contact groove (309) on its outer wall. One end of the push rod (307) contacts the contact groove (309). The two guide rods (310) are provided with a reset member on their exterior. One of the mounting plates (1) is fixedly connected to one side of the top outer wall of the worktable (2), and the other mounting plate (1) is fixedly connected to the top outer wall of the support base (308).

3. The clamping device for welding irregularly shaped steel pipes according to claim 2, characterized in that: The reset component includes a spring (311) sleeved on the outside of the guide rod (310), and the two ends of the spring (311) are fixedly connected to the worktable (2) and the support base (308) respectively.

4. The clamping device for welding irregularly shaped steel pipes according to claim 1, characterized in that: The contact assembly (4) includes two hinge seats (401) fixedly connected to the top outer wall of the mounting plate (1) and the moving block (302). Each of the two hinge seats (401) is rotatably connected to a contact plate (402). Each of the two contact plates (402) has a mounting groove (403) inside. Each of the two mounting grooves (403) is slidably connected to a guide post (406). Each of the two guide posts (406) is fixedly connected to a limiting structure outside.

5. The clamping device for welding irregularly shaped steel pipes according to claim 4, characterized in that: The limiting structure includes a movable frame (405) fixedly connected to the outside of the guide post (406), a support plate (404) fixedly connected to one side of the outer wall of the hinge (401), the movable frame (405) being slidably connected inside the support plate (404), and a lead screw (407) being rotatably connected to one side of the outer wall of the support plate (404), the lead screw (407) being threadedly connected inside the movable frame (405).

6. The clamping device for welding irregularly shaped steel pipes according to claim 4, characterized in that: One of the contact plates (402) has a first clearance groove in the middle, and the other contact plate (402) has a second clearance groove on both outer walls. The first clearance groove and the two second clearance grooves are staggered.

7. The clamping device for welding irregularly shaped steel pipes according to claim 5, characterized in that: The thread helix angle of the external thread of the lead screw (407) is less than the equivalent friction angle.

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