Rail grabber

Abstract

The utility model discloses a track rail grab ware relates to railway repair instrument field, include: rail clamping mechanism, rail clamping mechanism includes the claw for lateral clamping steel rail, connecting mechanism, one end rotation connection of connecting mechanism is in rail clamping mechanism, and connecting mechanism includes the hoop for fixed on the ladder car, solid rail mechanism, and elasticity slip is inserted in rail clamping mechanism, and solid rail mechanism is placed between two claws, and solid rail mechanism includes the pressing plate for vertical pressure on steel rail, and the application is inwards clamped from the both sides of steel rail through the claw, provides the transverse restraint, and the pressing plate extrudes the upper surface on steel rail downward, forms vertical restraint, and the claw and the pressing plate jointly constitute the multidirectional mechanics locking of " up and down + both sides", effectively resists the vibration and partial load in the ladder car operation, and the derailment risk is reduced significantly.

Description

Technical Field

[0001] This utility model relates to the field of railway maintenance equipment, and in particular to a rail gripper. Background Technology

[0002] In the field of railway construction, when constructing and maintaining railway facilities, mechanical equipment such as car ladders and unloading cars are often designed to move along the rails in order to save labor and improve work efficiency. At the same time, for operational safety, after the mechanical equipment such as car ladders and unloading cars are moved to the designated location, rail catchers are used to fix them to the rails.

[0003] A rail grabber is a device that generates a fixing force by making close contact between its jaws and the rail. It is mainly used in the railway field to ensure the safety and stability of ladder car operations. Its main body is made of high-strength metal materials (such as alloy steel or stainless steel) to ensure sufficient durability.

[0004] Current rail grabbers use two claws to clamp the rails, which can effectively prevent the risk of the ladder truck tipping over. However, since the claws only clamp the rails laterally, when the ladder truck shakes, the claws will slide vertically along the rails, thus affecting the stability of the ladder truck on the rails. Summary of the Invention The purpose of this utility model is to solve the problem that the traditional method of relying solely on the lateral clamping of the chocks on the rail affects the stability of the ladder vehicle, and to propose a rail gripper.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: including: A rail clamping mechanism, the rail clamping mechanism including jaws for laterally clamping rails; A connecting mechanism, one end of which is rotatably connected to a rail clamping mechanism, the connecting mechanism including a clamp for fixing to the ladder car; A rail fixing mechanism is elastically slidably inserted into a rail clamping mechanism, the rail fixing mechanism being positioned between two jaws, and the rail fixing mechanism including a pressure plate for vertically pressing against the rail.

[0006] As a further description of the above technical solution: the rail clamping mechanism also includes a mounting base and a movable seat disposed inside the mounting base; One end of the claw is rotatably connected to the movable seat via a movable shaft, and the side of the claw near the movable shaft is rotatably connected to the mounting seat via a positioning shaft; The movable seat is fixed with an adjustable traction rod that passes through the mounting seat. An eccentric wheel is rotatably connected to the upper end of the traction rod, and a handle is fixed to one side edge of the eccentric wheel.

[0007] As a further description of the above technical solution: the traction rod includes a first bolt fixedly connected to the movable seat and an internally threaded tube threadedly connected to the first bolt, and a sleeve is vertically fixed to the top of the internally threaded tube; One edge of the eccentric wheel is fixed with a traction shaft that is compatible with the sleeve, and an avoidance opening is provided on the side of the eccentric wheel away from the handle.

[0008] As a further description of the above technical solution: the rail fixing mechanism also includes a support plate, which is fixedly connected to the pressure plate by two pressure rods, the two pressure rods passing through the mounting base and the movable base; The support plate is positioned between the eccentric wheel and the mounting base; The upper surface of the pressure plate and the lower surface of the movable seat are fixedly connected by a tension spring.

[0009] As a further description of the above technical solution: the connecting mechanism also includes a long screw, one end of which is vertically fixed with a connecting pipe, one side of the mounting base is fixed with a connecting shaft adapted to the connecting pipe, one side of the clamp is fixed with a sleeve adapted to the long screw, and one side of the connecting pipe is threaded with a second bolt that abuts against the connecting shaft.

[0010] As a further description of the above technical solution: a rubber pad is detachably installed on the lower surface of the pressure plate, and the contour of the lower surface of the rubber pad is adapted to the contour of the upper surface of the rail.

[0011] As a further description of the above technical solution: the edge of the eccentric wheel away from the traction shaft is a planar structure.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. This application uses claws to clamp the rail from both sides inward, providing lateral constraint force, and pressure plates to press down on the upper surface of the rail, forming vertical constraint force. The claws and pressure plates together form a multi-directional mechanical locking system of "top and bottom + sides", which effectively resists vibration and off-center load during ladder car operation and significantly reduces the risk of derailment. 2. When the handle is pressed down, the eccentric wheel simultaneously drives the traction rod to lift (cambering the pawl) and the pressure rod to move down (driving the pressure plate to press the rail). After the eccentric wheel plane structure fits into the mounting base, the traction rod is locked by the thread, and the double locking prevents accidental loosening. A single action achieves double fixation. When disassembling, the handle can be turned in the opposite direction and lifted to quickly separate, greatly simplifying the workflow. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model; Figure 3This is a schematic diagram of the overall exploded structure of this utility model; Figure 4 This is a schematic diagram of the eccentric wheel structure of this utility model; Figure 5 This is a schematic diagram of the movable seat structure of this utility model; Figure 6 This is a schematic diagram of the overall rail-grabbing structure of this utility model.

[0014] Legend: 10. Rail clamping mechanism; 11. Mounting base; 111. Movable shaft; 112. Positioning shaft; 12. Movable seat; 13. Claw; 14. Traction rod; 141. First bolt; 142. Internal threaded pipe; 143. Sleeve; 15. Eccentric wheel; 151. Traction shaft; 152. Clearance opening; 16. Handle; 17. Connecting shaft; 20. Rail fixing mechanism; 21. Support plate; 22. Pressure rod; 24. Tension spring; 25. Pressure plate; 26. Rubber pad; 30. Connecting mechanism; 31. Long screw; 32. Clamp; 321. Sleeve; 33. Connecting pipe; 331. Second bolt. Detailed Implementation

[0015] 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.

[0016] like Figure 1 - Figure 6 As shown, the present invention provides a track gripper, comprising: The rail clamping mechanism 10 includes a jaw 13 for laterally clamping the rail, so that the rail clamping mechanism 10 is clamped and fixed on the rail. The connecting mechanism 30 is rotatably connected to the rail clamping mechanism 10 through one end of the connecting mechanism 30. The connecting mechanism 30 includes a clamp 32 for fixing on the ladder car, so as to adjust the installation angle of the clamp 32 and facilitate the installation of the clamp 32 on the crossbars at different heights of the ladder car. The rail fixing mechanism 20 is elastically slidably inserted into the rail clamping mechanism 10. The rail fixing mechanism 20 is placed between two jaws 13 and above the rail. The rail fixing mechanism 20 includes a pressure plate 25 for vertically pressing on the rail. After the two jaws 13 clamp and fix the rail, the pressure plate 25 presses against the upper surface of the rail and cooperates with the two jaws 13 to form a vertical clamping force. Through the joint cooperation of the upper and lower sides, the fixing stability of the rail grabber and the rail is improved, and the stability of the ladder car and the rail is ultimately improved.

[0017] like Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the rail clamping mechanism 10 also includes a mounting base 11 and a movable seat 12 located inside the mounting base 11, that is, the movable seat 12 moves up and down on the bottom inner side of the mounting base 11. The upper end of the chuck 13 is rotatably connected to the movable seat 12 via the movable shaft 111. The protruding side of the chuck 13 near the movable shaft 111 (and the concave surfaces of the two chucks 13 are opposite) is rotatably connected to the mounting seat 11 via the positioning shaft 112. Therefore, when the movable seat 12 moves downward, the movable shaft 111 pushes the chuck 13 to rotate around the positioning shaft 112, causing the lower end of the chuck 13 to swing outward, so that the two chucks 13 unfold and disengage from the rail. Conversely, when the mounting seat 11 moves upward, the positioning shaft 112 pulls the chuck 13 to rotate around the positioning shaft 112, causing the lower end of the chuck 13 to swing inward, so as to clamp the two chucks 13 on the rail. An adjustable traction rod 14, which passes through the mounting base 11, is fixed on the movable seat 12. The length of the traction rod 14 is adjusted and it is rotatably connected to the eccentric wheel 15 located above the mounting base 11 to match the clamping strength of the pawl 13. A handle 16 is fixed to one edge of the eccentric wheel 15. When the handle 16 is pressed and the connection between the eccentric wheel 15 and the traction rod 14 moves away from the mounting base 11, the movable seat 12 is pulled upward. Conversely, the movable seat 12 is pushed downward.

[0018] like Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the traction rod 14 includes a first bolt 141 fixedly connected to the movable seat 12 and an internally threaded tube 142 threadedly connected to the first bolt 141. A sleeve 143 is vertically fixed to the top of the internally threaded tube 142. One edge of the eccentric wheel 15 is fixed with a traction shaft 151 that is adapted to the sleeve 143. The side of the eccentric wheel 15 away from the handle 16 has an avoidance opening 152 that is adapted to the traction rod 14. When the handle 16 is pressed, under the action of the eccentric wheel 15, the traction shaft 151 and the sleeve 143 move away from the mounting seat 11. When the handle 16 is rotated clockwise, the first bolt 141 is inserted into the internal thread tube 142. At this time, the eccentric wheel 15 plays a locking role under the squeezing force to prevent the handle 16 from being lifted accidentally. When the handle 16 is lifted, the eccentric wheel 15 rotates around the traction shaft 151, and the traction shaft 151 and the sleeve 143 fall down, thereby causing the traction rod 14 to push the movable seat 12 down, so that the lower ends of the two claws 13 unfold.

[0019] like Figure 2 , Figure 3 , Figure 5 As shown, the rail fixing mechanism 20 also includes a support plate 21 placed above the mounting base 11. The support plate 21 and the pressure plate 25 are fixedly connected by two symmetrically distributed pressure rods 22, which pass through the mounting base 11 and the movable base 12. The support plate 21 is positioned between the eccentric wheel 15 and the mounting base 11; The upper surface of the pressure plate 25 is fixedly connected to the lower surface of the movable seat 12 by a tension spring 24. When the traction shaft 151 is close to the upper surface of the mounting seat 11, the tension spring 24 is in an elastic recovery state and pulls the pressure plate 25 upward toward the mounting seat 11. At the same time, the lower surface of the support plate 21 moves away from the mounting seat 11. Therefore, when the handle 16 is pressed down, the eccentric wheel 15 can press the support plate 21, the pressure rod 22 and the pressure plate 25 downward, and can also drive the movable seat 12 to move downward. Thus, through the downward pressing action of the handle 16 and the cooperation of the eccentric wheel 15, the pawl 13 can clamp the rail while the pressure plate 25 is pressed down on the upper surface of the rail.

[0020] like Figure 3 , Figure 6 As shown, the connecting mechanism 30 also includes a long screw 31, one end of which is vertically fixed to a connecting pipe 33. A connecting shaft 17 adapted to the connecting pipe 33 is fixed to one side of the mounting base 11 to achieve a rotatable connection between the long screw 31 and the mounting base 11. A sleeve 321 adapted to the long screw 31 is fixed to one side of the clamp 32. Therefore, the installation position of the clamp 32 can be adjusted by sliding the sleeve 321 on the long screw 31. The clamp 32 is limited by the threaded connection between the nuts placed on both sides of the sleeve 321 and the long screw 31. At the same time, a second bolt 331 that abuts against the connecting shaft 17 is threaded to one side of the connecting pipe 33. Under the action of the compression and / or friction between the second bolt 331 and the connecting shaft 17, the angle-adjusted long screw 31 and the connecting shaft 17 are fixed.

[0021] like Figure 2 , Figure 6 As shown, a rubber pad 26 is detachably mounted on the lower surface of the pressure plate 25, and mounting holes are provided at all four corners of the rubber pad 26 to facilitate the installation and removal of the rubber pad 26 from the pressure plate 25 by screw thread connection, thereby facilitating the replacement of the rubber pad 26. Furthermore, the contour of the lower surface of the rubber pad 26 is adapted to the contour of the upper surface of the rail to increase the contact area between the rubber pad 26 and the rail. Under the action of the rubber pad 26, firstly, the friction coefficient with the rail is increased, and secondly, it plays a buffering role when the pressure plate 25 is pressed and fixed on the rail.

[0022] like Figure 2 , Figure 4 As shown, the eccentric wheel 15 is designed with a planar structure on the side edge away from the traction shaft 151. When the eccentric wheel 15 is pressed down, and the planar side of the edge is in contact with the upper surface of the mounting base 11, the handle 16 is rotated to make the first bolt 141 enter the internal threaded tube 142. At this time, the eccentric wheel 15 can be positioned. When it is necessary to lift the handle 16, it needs to be rotated in the opposite direction, thus avoiding the accidental lifting of the handle 16.

[0023] Working principle: Fix the clamp 32 on the ladder car, and then rotate the mounting base 11 around the connecting shaft 17 as the fulcrum. At the same time, the long screw 31 slides in the sleeve 321. Adjust the position of the mounting base 11 so that the unfolded claws 13 are placed on both sides of the rail. Meanwhile, the normally closed pressure plate 25 is placed above the rail. Then, fix the connecting pipe 33 to the connecting shaft 17 with the second bolt 331. In this state, when the ladder car moves, the problem of friction between the rubber pad 26 at the bottom of the pressure plate 25 and the claws 13 and the rail can be avoided. When it is necessary to fix the rail grabber to the rail, press the handle 16 down. Under the action of the eccentric wheel 15, the traction shaft 151 and the sleeve 143 move upward. At the same time, the support plate 21 presses down, and the tension spring 24 is elastically stretched to generate an elastic rebound force until the flat side of the eccentric wheel 15 abuts against the mounting base 11. At this time, the traction rod 14 is placed in the clearance opening 152. Then, turn the handle 16 clockwise so that the first bolt 141 is inserted into the internal thread tube 142 under the action of the thread. Through the joint cooperation of the two claws 13 and the pressure plate 25, the rail grabber is firmly fixed to the rail. During disassembly, simply turn the handle 16 in the opposite direction and lift it upwards to quickly separate it from the rail.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A rail gripper, characterized in that, include: The rail clamping mechanism (10) includes a jaw (13) for laterally clamping the rail. A connecting mechanism (30) is rotatably connected at one end to a rail clamping mechanism (10), and the connecting mechanism (30) includes a clamp (32) for fixing to the ladder car. The rail fixing mechanism (20) is elastically slidably inserted on the rail clamping mechanism (10). The rail fixing mechanism (20) is positioned between two jaws (13). The rail fixing mechanism (20) includes a pressure plate (25) for vertically pressing on the rail.

2. The rail gripper according to claim 1, characterized in that, The rail clamping mechanism (10) also includes a mounting base (11) and a movable seat (12) located inside the mounting base (11). One end of the claw (13) is rotatably connected to the movable seat (12) via a movable shaft (111), and the side of the claw (13) near the movable shaft (111) is rotatably connected to the mounting seat (11) via a positioning shaft (112). The movable seat (12) is fixed with an adjustable traction rod (14) that passes through the mounting seat (11). The upper end of the traction rod (14) is rotatably connected to an eccentric wheel (15), and a handle (16) is fixed to one side edge of the eccentric wheel (15).

3. A track gripper according to claim 2, characterized in that, The traction rod (14) includes a first bolt (141) fixedly connected to the movable seat (12) and an internally threaded tube (142) threadedly connected to the first bolt (141), with a sleeve (143) vertically fixed to the top of the internally threaded tube (142). One side edge of the eccentric wheel (15) is fixed with a traction shaft (151) adapted to the sleeve (143), and an avoidance opening (152) is provided on the side of the eccentric wheel (15) away from the handle (16).

4. A rail gripper according to claim 2, characterized in that, The rail fixing mechanism (20) also includes a support plate (21), which is fixedly connected to the pressure plate (25) by two pressure rods (22), which pass through the mounting base (11) and the movable base (12). The support plate (21) is positioned between the eccentric wheel (15) and the mounting base (11); The upper surface of the pressure plate (25) and the lower surface of the movable seat (12) are fixedly connected by a tension spring (24).

5. A rail gripper according to claim 2, characterized in that, The connecting mechanism (30) also includes a long screw (31), one end of which is vertically fixed with a connecting pipe (33), one side of the mounting base (11) is fixed with a connecting shaft (17) adapted to the connecting pipe (33), one side of the clamp (32) is fixed with a sleeve (321) adapted to the long screw (31), and one side of the connecting pipe (33) is threaded with a second bolt (331) that abuts against the connecting shaft (17).

6. A rail gripper according to claim 2, characterized in that, A rubber pad (26) is detachably installed on the lower surface of the pressure plate (25), and the contour of the lower surface of the rubber pad (26) is adapted to the contour of the upper surface of the rail.

7. A rail gripper according to claim 2, characterized in that, The edge of the eccentric wheel (15) away from the traction shaft (151) is a planar structure.

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