Positioning device for steel rail turnout base plate welding

Abstract

The utility model discloses a positioning device for steel rail turnout base plate welding, and relates to the technical field of rail accessory machining. The device comprises a positioning table, a notch is formed in the positioning table, a conveying mechanism is arranged in the notch, and a positioning mechanism is arranged at one end of the positioning table; the conveying mechanism comprises a plurality of placing plates, placing grooves are formed in the upper surfaces of the placing plates, and rotating rods are rotationally mounted at the two ends of each groove opening; through the arranged conveying mechanism, the to-be-welded rail base plates in batches are conveyed one by one, the rail base plates and welding parts in batches are conveyed to the welding station of the welding robot one by one, and the welding robot conducts welding operation on the rail base plates and the welding parts in batches; therefore, one-by-one conveying of batch track base plates and welding parts is conveniently achieved, and then the welding operation efficiency of the track base plates and the welding parts is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of track component processing technology, specifically a positioning device for welding steel track turnout pads. Background Technology

[0002] Track turnout pads are crucial components of railway turnouts, primarily used to support and secure the railway turnout rails, ensuring the safe and smooth operation of trains at the turnout. Track turnout pads are typically made of high-strength materials such as steel plates or cast iron. With technological advancements, new materials such as high-strength alloy steel and carbon fiber composites have been introduced into their manufacturing. These new materials not only improve the strength and durability of the pads but also reduce their weight, contributing to energy conservation, emission reduction, and improved train operating efficiency.

[0003] The welding of track turnout pads is mainly completed automatically by welding robots. Although this improves the welding efficiency of track turnout pads, some defects still exist in the welding process:

[0004] 1. In the existing technology, the handling robot on the production line moves the welding parts onto the pad, and then the welding robot performs the welding operation. However, if there is slight shaking during welding, the welding parts are prone to slight displacement, which affects the welding accuracy.

[0005] 2. At the same time, existing technologies can only place a single backing plate on the welding table during welding. After the welding robot finishes welding a backing plate, the transport robot removes the backing plate and then places a new one. Because the backing plates to be welded cannot be provided in a timely manner for the welding robot to perform the welding operation, the welding efficiency of the backing plates is low. Utility Model Content

[0006] In order to solve the above problems, the purpose of this utility model is to provide a positioning device for welding steel rail turnout pads.

[0007] To solve the above technical problems, the present invention adopts the following technical solution: a positioning device for welding steel rail turnout pads, including a positioning platform, a slot is provided on the positioning platform, a conveying mechanism is provided in the slot, and a positioning mechanism is provided at one end of the positioning platform;

[0008] The conveying mechanism includes a plurality of placement plates, each with a placement groove on its upper surface. Rotating rods are rotatably mounted at both ends of each groove, and sprockets are fixedly mounted at both ends of each of the rotating rods. A chain is driven between adjacent sprockets. A connecting frame is fixedly mounted on the lower surface of each of the placement plates, and the end of the connecting frame is fixedly connected to the chain. A servo motor is fixedly mounted at one end of the positioning platform, and the drive output end of the servo motor is fixedly connected to one end of one of the rotating rods.

[0009] Preferably, two limiting baffles are fixedly installed on the upper surface of the positioning platform, and one side of the placement plates and one side of the limiting baffles are in contact with each other.

[0010] Preferably, a support frame is fixedly provided at the fixed end of the servo motor, and one end of the support frame is fixedly connected to one end of the positioning platform.

[0011] Preferably, the inner wall of the slot is fixedly provided with two load-bearing plates, and the lower surface of one of the placement plates is in contact with the upper surfaces of the two load-bearing plates.

[0012] Preferably, the positioning mechanism includes an L-shaped frame, one end of which is fixedly mounted on the upper surface of the positioning platform, and the other end of which is fixedly mounted with a cylinder. The piston end of the cylinder is detachably mounted with a fixing frame, and four evenly distributed positioning discs are fixedly mounted on the fixing frame. The four positioning discs and one of the placement plates are vertically aligned.

[0013] Preferably, a gasket is fixedly provided on the lower surface of each of the four positioning discs.

[0014] Preferably, a mounting plate is fixedly provided on the piston end of the cylinder, and a plurality of evenly distributed mounting bolts are threadedly mounted on the mounting plate, with one end of each mounting bolt being threadedly rotatably connected to a threaded hole on the fixing bracket.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. In this utility model, a batch of track pads to be welded are transported one by one through a conveying mechanism, and the batch of track pads and welded parts are transported one by one to the welding station of the welding robot, so that the welding robot can perform welding operations on the batch of track pads and welded parts. This facilitates the one-by-one transport of the batch of track pads and welded parts, thereby effectively improving the welding efficiency of track pads and welded parts.

[0017] 2. In this utility model, the positioning mechanism is used to press and position the welded parts that move to the welding station of the welding robot, so that the welded parts are stably fixed on the track pad, avoiding the displacement of the welded parts during the welding process. This facilitates the positioning of the welded parts on the track pad, thereby effectively improving the stability of the welded parts during the welding process and improving the welding accuracy. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of a positioning device for welding steel rail turnout pads according to the present invention.

[0020] Figure 2 This is a schematic diagram showing the connection between the conveying mechanism and the positioning mechanism of this utility model and the positioning platform.

[0021] Figure 3 This is a schematic diagram showing the connection between the placement plate and the conveying mechanism of this utility model.

[0022] Figure 4 This is a schematic diagram showing the connection between the positioning mechanism and the placement plate of this utility model.

[0023] Figure 5 This is a schematic diagram showing the separation of the mounting plate and the fixing frame of this utility model.

[0024] Figure 6 This is a schematic diagram of the clamping state of the welded parts in an embodiment of this utility model.

[0025] In the diagram: 1. Positioning platform; 11. Groove; 2. Conveying mechanism; 21. Placement plate; 22. Placement groove; 23. Limiting baffle; 24. Rotating rod; 25. Sprocket; 26. Chain; 27. Connecting frame; 28. Servo motor; 281. Support frame; 29. ​​Load-bearing plate; 3. Positioning mechanism; 31. L-shaped frame; 32. Cylinder; 33. Fixing frame; 34. Positioning disc; 35. Gasket; 36. Mounting plate; 37. Mounting bolt; 10. Track pad; 20. Welded parts. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example: Figure 1-6As shown, this utility model provides a positioning device for welding steel rail turnout pads, including a positioning platform 1, a slot 11 on the positioning platform 1, a conveying mechanism 2 inside the slot 11, and a positioning mechanism 3 at one end of the positioning platform 1. By setting the conveying mechanism 2, the conveying mechanism 2 can convey multiple rail pads 10 to be welded, thereby improving the welding efficiency of the rail pads 10. The positioning mechanism 3 can press the welding parts 20 placed on the rail pads 10 (the welding parts 20 are placed on the rail pads 10 by a handling robot) for welding robot operation, thereby improving the stability of the welding parts 20 and improving the welding accuracy.

[0028] The conveying mechanism 2 includes several placement plates 21, each with a placement groove 22 on its upper surface. By using multiple placement plates 21 and placement grooves 22, the transport robot can place the track pads 10 to be welded one by one into the placement grooves 22. Two limiting baffles 23 are fixedly installed on the upper surface of the positioning platform 1. These baffles improve the stability of the placement plates 21 during movement. One side of each placement plate 21 is in contact with one side of the limiting baffle 23. Rotating rods 24 are rotatably installed at both ends of the slot 11, and sprockets 25 are fixedly installed at both ends of each rotating rod 24. A chain 26 is driven between adjacent sprockets 25. Connecting frames 27 are fixedly installed on the lower surface of each placement plate 21, with the ends of the connecting frames 27 fixedly connected to the chains 26. The rotating rods 24 are driven to rotate. The moving rod 24 can transmit the chain 26 through the sprocket 25. During the transmission, the chain 26 can make the placement plate 21 move cyclically through the connecting frame 27. A servo motor 28 is fixedly provided at one end of the positioning table 1. The drive output end of the servo motor 28 is fixedly connected to one end of one of the rotating rods 24. By turning on the servo motor 28, the drive shaft of the servo motor 28 can make the rotating rod 24 rotate. A support frame 281 is fixedly provided at the fixed end of the servo motor 28. One end of the support frame 281 is fixedly connected to one end of the positioning table 1. Two load-bearing plates 29 are fixedly provided on the inner wall of the slot 11. The lower surface of one of the placement plates 21 is in contact with the upper surface of the two load-bearing plates 29. By setting the load-bearing plates 29, when the placement plate 21 moves to the bottom of the positioning mechanism 3, the positioning mechanism 3 presses the welded part 20 onto the track pad 10. The load-bearing plates 29 can withstand the downward pressure from the positioning mechanism 3 and prevent the chain 26 from falling.

[0029] The positioning mechanism 3 includes an L-shaped frame 31. One end of the L-shaped frame 31 is fixedly mounted on the upper surface of the positioning table 1, and the other end of the L-shaped frame 31 is fixedly mounted with a cylinder 32. The piston end of the cylinder 32 is detachably mounted with a fixing frame 33. Four evenly distributed positioning discs 34 are fixedly mounted on the fixing frame 33. The four positioning discs 34 and one of the placement plates 21 are vertically aligned. During the laser welding process of the weldment 20, when the placement plate 21 moves to the bottom of the positioning disc 34, the cylinder 32 is activated. The piston end of the cylinder 32 causes the positioning disc 34 to descend vertically through the fixing frame 33. The positioning disc 34 can press the weldment 20 on the track pad 10, thereby achieving the positioning of the weldment 20 during the welding operation. The lower surface of each of the four positioning discs 34 is fixedly mounted with a shim 35. By setting the shim 35, the positioning disc 34 can press the weldment 20 through the shim 35. The shim 35 can improve the stability between the positioning disc 34 and the weldment 20.

[0030] A mounting plate 36 is fixedly installed on the piston end of the cylinder 32. A number of evenly distributed mounting bolts 37 are rotatably installed on the mounting plate 36. One end of the mounting bolts 37 is rotatably connected to the threaded hole on the fixing bracket 33. By setting the mounting plate 36 and the mounting bolts 37, it is easy to remove the fixing bracket 33 and the positioning plate 34 from the piston end of the cylinder 32. At the same time, the fixing bracket 33 and the positioning plate 34 can be fixed on the piston end of the cylinder 32 by reversing the operation.

[0031] Working principle: When it is necessary to weld the welding parts 20 onto the track pads 10, the operator first controls the handling robot to place the multiple track pads 10 to be welded into the placement slots 22 one by one, and then moves the multiple welding parts 20 onto the multiple track pads 10, with each welding part 20 placed on one track pad 10.

[0032] Subsequently, the operator starts the servo motor 28. The drive shaft of the servo motor 28 causes the corresponding rotating rod 24 to rotate. At this time, the two rotating rods 24 transmit two chains 26 through two sprockets 25. The two chains 26 transmit multiple placement plates 21 in a cyclical manner through the corresponding connecting frame 27 to transport multiple track pads 10 in the slot 11. When the foremost placement plate 21 and track pad 10 are located below the positioning mechanism 3, and the lower surface of the placement plate 21 is in contact with the upper surface of the two load-bearing plates 29, and the four welded parts 20 are vertically aligned with the four positioning disks 34, the servo motor 28 is turned off. This facilitates the one-by-one transport of the batch track pads 10 and welded parts 20, thereby effectively improving the welding efficiency of the track pads 10 and welded parts 20.

[0033] Subsequently, the operator activates cylinder 32, and the piston end of cylinder 32 extends, causing four positioning discs 34 to descend vertically through the fixing frame 33. The four positioning discs 34 press the four welded parts 20 onto the track pad 10 for use by the welding robot in welding operations. This facilitates the positioning of the welded parts 20 on the track pad 10, thereby effectively improving the stability of the welded parts 20 during the welding process and increasing the welding accuracy.

[0034] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A positioning device for welding steel rail turnout pads, comprising a positioning platform (1), characterized in that: The positioning platform (1) has a slot (11) and a conveying mechanism (2) is provided in the slot (11). One end of the positioning platform (1) is provided with a positioning mechanism (3). The conveying mechanism (2) includes a placement plate (21), and several placement plates (21) are provided. The upper surface of each of the several placement plates (21) is provided with a placement groove (22). Rotating rods (24) are rotatably installed at both ends of the grooves (11). Sprockets (25) are fixedly installed at both ends of the two rotating rods (24). A chain (26) is installed between two adjacent sprockets (25). A connecting frame (27) is fixedly installed on the lower surface of each of the several placement plates (21). The end of the connecting frame (27) is fixedly connected to the chain (26). A servo motor (28) is fixedly installed at one end of the positioning table (1). The drive output end of the servo motor (28) is fixedly connected to one end of one of the rotating rods (24).

2. The positioning device for welding steel rail turnout pads as described in claim 1, characterized in that, Two limiting baffles (23) are fixedly installed on the upper surface of the positioning platform (1), and one side of the placement plate (21) and one side of the limiting baffle (23) are in contact.

3. The positioning device for welding steel rail turnout pads as described in claim 1, characterized in that, The servo motor (28) is fixedly provided with a support frame (281), and one end of the support frame (281) is fixedly connected to one end of the positioning table (1).

4. The positioning device for welding steel rail turnout pads as described in claim 1, characterized in that, The inner wall of the slot (11) is fixedly provided with two load-bearing plates (29), and the lower surface of one of the placement plates (21) and the upper surface of the two load-bearing plates (29) are in contact.

5. The positioning device for welding steel rail turnout pads as described in claim 1, characterized in that, The positioning mechanism (3) includes an L-shaped frame (31), one end of which is fixedly mounted on the upper surface of the positioning platform (1), and the other end of which is fixedly mounted with a cylinder (32). The piston end of the cylinder (32) is detachably mounted with a fixing frame (33), and four evenly distributed positioning discs (34) are fixedly mounted on the fixing frame (33). The four positioning discs (34) and one of the placement plates (21) are vertically aligned.

6. The positioning device for welding steel rail turnout pads as described in claim 5, characterized in that, Gaskets (35) are fixedly provided on the lower surface of each of the four positioning disks (34).

7. The positioning device for welding steel rail turnout pads as described in claim 6, characterized in that, The piston end of the cylinder (32) is fixedly provided with a mounting plate (36), and a number of evenly distributed mounting bolts (37) are rotatably mounted on the mounting plate (36). One end of the mounting bolts (37) is rotatably connected to the threaded hole on the fixing frame (33).

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