Mechanical device for pulling out switch bed plate pin

Abstract

The present application relates to a kind of mechanical pin pulling device of work turnout sliding bed plate, including pin clamp and linear jacking mechanism moving along the length direction of pin;Linear jacking mechanism includes support seat, press bar, linkage and sliding block;The middle part of press bar is hinged with support seat by first hinged part, and the front end of press bar is hinged with the lower end of linkage by second hinged part;Two slide rods are symmetrically arranged on the upper end surface of support seat, and sliding block includes two slide sleeves, two slide sleeves are respectively slidably sleeved on two slide rods, and rotating rod is horizontally connected between two slide sleeves, and the upper end of linkage is rotatably connected on rotating rod;Third hinged part is connected between two slide sleeves, and pin clamp is hinged on sliding block by third hinged part.By driving pin clamp only linear upward pin pulling movement, avoid the extra friction and pin bending risk caused by arc motion;Adopt pure mechanical structure, avoid oil leakage, poor durability and security risks, single person can complete operation, greatly improve work efficiency.

Description

Technical Field

[0001] This invention relates to the field of railway turnout maintenance technology, and in particular to a mechanical pin-pulling device for a railway turnout slide plate. Background Technology

[0002] In railway turnout maintenance, pin removal is a common and critical procedure. Current technology typically employs hydraulic pin pullers (see...). Figure 6 ) or an open pry bar (see Figure 7 The hydraulic pin puller is used for pin removal; however, during the actual operation, the hydraulic rod extension stroke of the hydraulic pin puller is insufficient, requiring depressurization midway, installation of an extension head, and secondary pressurization. The entire operation requires two people to work together, resulting in cumbersome operation and low efficiency. At the same time, the hydraulic system has extremely high requirements for the sealing pipeline, and high-intensity on-site operations can easily cause problems such as oil leakage and seal ring damage, which not only affects the durability of the tool but also poses safety hazards. As for the open-end crowbar technology, the stroke of the crowbar's toes is shorter than the pin's pull-out resistance length, requiring multiple people to work together. If an object is manually placed under the support of the crowbar, the manual efficiency is low.

[0003] To address the aforementioned issues, existing improved solutions based on the lever principle have added a support base and a lever hinge structure. However, due to the hinge, the front clamp moves in an arc, causing the pin to not be pulled out in a straight line. This results in increased friction between the pin and the wall of the pin hole during removal, making it more difficult to pull out. Furthermore, the pin is prone to bending and deformation during removal, further increasing the difficulty of removal. Summary of the Invention

[0004] The purpose of this invention is to provide a mechanical pin-pulling device for track turnout slide plates, thereby solving the aforementioned problems in the prior art.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A mechanical pin-pulling device for track turnout slide plates includes a pin clamp and a linear lifting mechanism that moves along the length of the pin; the linear lifting mechanism includes a support base, a pressure rod, a linkage, and a slider; The support base is provided with a first hinge part, the middle part of the pressure rod is hinged to the support base through the first hinge part, and the front end of the pressure rod is hinged to the lower end of the linkage part through the second hinge part. The upper end face of the support base is symmetrically provided with two slide rods arranged along the length direction of the pin. The slider includes two slide sleeves, which are slidably sleeved on the two slide rods respectively. A rotating rod is horizontally connected between the two slide sleeves. The upper end of the linkage is rotatably connected to the rotating rod. A third hinge is connected between the two sliding sleeves, and the pin clamp is hinged to the slider through the third hinge.

[0006] The beneficial effects of this invention are: by driving the pin clamp to make only a straight upward pin pulling motion, this invention avoids the additional friction and pin bending risk caused by arc motion; by adopting a purely mechanical structure, no hydraulic system is required, which completely avoids the oil leakage, poor durability and safety hazards caused by sealing problems of hydraulic pin pullers; and a single person can complete the operation, which greatly improves the work efficiency.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the slider also includes a horizontally arranged V-shaped connector, the opening of which faces the linkage component, and both ends of the V-shaped connector are fixedly connected to two sliding sleeves respectively. The third hinge is fixedly connected to the bent part of the V-shaped connector.

[0009] The further beneficial effects of adopting the above are: avoiding motion interference, greatly increasing the motion stroke of the linkage, and thus increasing the upward motion stroke of the pin clamp to accommodate longer pins.

[0010] Furthermore, a support rod is vertically connected to the lower middle part of the pressure rod, and the other end of the support rod is hinged to the support seat through the first hinge part.

[0011] The further beneficial effect of adopting the above is that, under the same pressing stroke, the front end of the pressure rod exerts a greater thrust on the linkage, thus improving the force transmission efficiency.

[0012] Furthermore, the pressure bar includes a lifting part and a pressing part located on both sides of the support rod. The lifting part is hinged to the lower end of the linkage through a second hinge part; the length of the pressing part is greater than the length of the lifting part.

[0013] The further beneficial effects of adopting the above are: the operating lever arm is increased, the pressing force is reduced, and the operating comfort is improved.

[0014] Furthermore, it also includes an extension rod, with a first connecting part at the rear end of the pressure rod and a second connecting part at the front end of the extension rod, and the first connecting part and the second connecting part are detachably connected.

[0015] The further beneficial effect of adopting the above method is that it effectively increases the length of the lever arm, making it more labor-saving.

[0016] Furthermore, the extension rod has a Z-shaped structure.

[0017] The further beneficial effect of adopting the above is that the Z-shaped structure design is conducive to operation in confined spaces and can avoid interference from the surrounding environment.

[0018] Furthermore, the clamp includes two hinged clamping parts, the lower ends of which are bent inward horizontally to form a locking part that engages with the bottom of the pin's head.

[0019] Furthermore, two sliding rods are respectively arranged at two adjacent corners of the upper end face of the support base, and two additional reinforcing rods are vertically arranged at the other two adjacent corners of the upper end face of the support base. The tops of the two sliding rods and the two reinforcing rods are fixedly connected by reinforcing blocks.

[0020] The further beneficial effect of adopting the above is that it greatly improves the overall structural strength of the device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure before the pin is removed according to the present invention; Figure 3 This is a schematic diagram of the structure after the pin is removed according to the present invention; Figure 4 This is a partial cross-sectional structural diagram of the present invention; Figure 5 This is a schematic diagram of the exploded structure of the present invention; Figure 6 A schematic diagram of the existing technology structure of a hydraulic pin puller; Figure 7 This is a schematic diagram of the existing technology structure of an open-end crowbar.

[0022] The attached diagram lists the components represented by each number as follows: 1. Pin clamp; 11. Clamping part; 12. Fastening part; 2. Linear lifting mechanism; 21. Support base; 211. First hinge part; 212. Slide rod; 213. Reinforcing rod; 214. Reinforcing block; 22. Pressure rod; 221. Second hinge part; 222. Support rod; 223. Lifting part; 224. Pressing part; 225. First connecting part; 23. Linkage component; 24. Slider; 241. Sliding sleeve; 242. Rotating rod; 243. Third hinge part; 244. V-shaped connector; 25. Extension rod; 251. Second connecting part; 3. Pin. Detailed Implementation

[0023] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0024] Example 1 like Figures 1 to 5 As shown, a mechanical pin-pulling device for track turnout slides includes a pin clamp 1 and a linear lifting mechanism 2 that moves along the length of the pin 3; the linear lifting mechanism 2 includes a support 21, a pressure rod 22, a linkage 23 and a slider 24; The support base 21 is provided with a first hinge part 211. The middle part of the pressure rod 22 is hinged to the support base 21 through the first hinge part 211, and the front end of the pressure rod 22 is hinged to the lower end of the linkage member 23 through the second hinge part 221. The upper end face of the support base 21 is symmetrically provided with two slide rods 212 arranged along the length direction of the pin 3. The slider 24 includes two slide sleeves 241, which are slidably sleeved on the two slide rods 212 respectively. A rotating rod 242 is horizontally connected between the two slide sleeves 241. The upper end of the linkage 23 is rotatably connected to the rotating rod 242. A third hinge 243 is connected between the two sliding sleeves 241, and the pin clamp 1 is hinged to the slider 24 through the third hinge 243.

[0025] When the operator presses the rear end of the pressure rod 22, the pressure rod 22 rotates around the first hinge 211. Its front end drives the lower end of the linkage 23 to make an arc motion through the second hinge 221. The force is transmitted to the slider 24 through the linkage 23, driving the slider 24 to move upward in a straight line along the slide rod 212. During the process, the lower end of the linkage 23 moves in an arc with the first hinge 211 as the center under the drive of the pressure rod 22. However, since the upper end of the linkage 23 is rotatably connected to the rotating rod 242, the arc motion is converted into an upward thrust on the rotating rod 242, thereby driving the pin clamp 1 to only make a straight upward pin pulling motion, avoiding the additional friction and pin 3 bending risk caused by the arc motion. In addition, the present invention adopts a purely mechanical structure, which does not require a hydraulic system, completely avoiding the oil leakage, poor durability and safety hazards caused by sealing problems of hydraulic pin pullers. Moreover, it can be operated by a single person, which greatly improves the work efficiency.

[0026] In practice, the linkage 23 has an arc-shaped structure, and the back of the linkage 23 faces the pin clamp 1, which can greatly increase the stroke of the pressure rod 22.

[0027] Example 2 like Figures 1 to 5 As shown, this embodiment is a further improvement on embodiment 1, as detailed below: The slider 24 also includes a horizontally arranged V-shaped connector 244, the opening of which faces the linkage 23. The two ends of the V-shaped connector 244 are fixedly connected to two sliding sleeves 241 respectively, and the third hinge part 243 is fixedly connected to the bent part of the V-shaped connector 244.

[0028] The V-shaped connector 244 allows the linkage 23 to move normally in the V-groove of the V-shaped connector, providing the linkage 23 with a larger movement space, avoiding movement interference, and greatly increasing the movement stroke of the linkage 23. This, in turn, increases the upward movement stroke of the pin clamp 1 to accommodate the longer pin 3. In addition, the third hinge part 243 is fixedly connected to the bent part of the V-shaped connector 244, that is, the middle part of the V-shaped connector 244, so that the force is more evenly distributed.

[0029] Example 3 like Figures 1 to 5 As shown, this embodiment is a further improvement on embodiment 1, as detailed below: A support rod 222 is vertically connected to the lower middle part of the pressure rod 22, and the other end of the support rod 222 is hinged to the support base 21 through the first hinge part 211.

[0030] The support rod 222, through a T-shaped vertical reinforcement structure, increases the bending modulus of the pressure rod 22, reducing the risk of bending of the pressure rod 22 under high-intensity operations. Its hinge with the first hinge part 211 forms a double-support force structure. Compared with a conventional lever, under the same pressing stroke, the front end of the pressure rod 22 exerts a greater thrust on the linkage 23, thus improving the force transmission efficiency.

[0031] The pressure rod 22 includes a lifting part 223 and a pressing part 224 located on both sides of the support rod 222. The lifting part 223 is hinged to the lower end of the linkage 23 through the second hinge part 221. The length of the pressing part 224 is greater than the length of the lifting part 223.

[0032] The lever ratio design of the lower pressing part 224 being longer than that of the lifting part 223 increases the operating lever arm, reduces the pressing force, and improves the comfort of operation.

[0033] Example 4 like Figures 1 to 5 As shown, this embodiment is a further improvement on embodiment 1, as detailed below: It also includes an extension rod 25. The rear end of the pressure rod 22 is provided with a first connecting part 225, and the front end of the extension rod 25 is provided with a second connecting part 251. The first connecting part 225 and the second connecting part 251 are detachably connected. The extension rod 25 effectively increases the length of the lever arm, making it more labor-saving. In specific implementations, the first connecting part 225 and the second connecting part 251 can be a combination of a sleeve and a plug rod, or a combination of a threaded sleeve and a screw, or any other detachable connection method.

[0034] The extension rod 25 has a Z-shaped structure.

[0035] The Z-shaped structure design is beneficial for operation in confined spaces, avoids interference from the surrounding environment, and the detachable connection design can adapt to the needs of different working scenarios.

[0036] The clamp includes two hinged clamping parts 11, the lower ends of which are bent inward horizontally to form a fastening part 12 that engages with the bottom of the nail head of the pin 3.

[0037] Example 5 like Figures 1 to 5 As shown, this embodiment is a further improvement on embodiment 1, as detailed below: Two sliding rods 212 are respectively arranged at two adjacent corners of the upper end face of the support base 21, and two other adjacent corners of the upper end face of the support base 21 are respectively vertically arranged with reinforcing rods 213. The top ends of the two sliding rods 212 and the two reinforcing rods 213 are fixedly connected by reinforcing blocks 214.

[0038] The symmetrical layout of the double sliding rods 212 and the double reinforcing rods 213, combined with the top connection of the reinforcing block 214, forms a spatial rigid frame structure, which greatly improves the overall structural strength of the device.

[0039] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mechanical pin-pulling device for a track turnout slide plate, characterized in that, It includes a pin clamp (1) and a linear lifting mechanism (2) that moves along the length of the pin (3); the linear lifting mechanism (2) includes a support base (21), a pressure rod (22), a linkage (23) and a slider (24); The support base (21) is provided with a first hinge part (211), the middle part of the pressure rod (22) is hinged to the support base (21) through the first hinge part (211), and the front end of the pressure rod (22) is hinged to the lower end of the linkage (23) through the second hinge part (221). The upper end face of the support base (21) is symmetrically provided with two slide rods (212) arranged along the length direction of the pin (3). The slider (24) includes two sliding sleeves (241). The two sliding sleeves (241) are respectively slidably sleeved on the two slide rods (212). A rotating rod (242) is horizontally connected between the two sliding sleeves (241). The upper end of the linkage (23) is rotatably connected to the rotating rod (242). A third hinge (243) is connected between the two sliding sleeves (241), and the pin clamp (1) is hinged to the slider (24) through the third hinge (243).

2. The pin-pulling device according to claim 1, characterized in that, The slider (24) also includes a horizontally arranged V-shaped connector (244), the opening of which faces the linkage (23), and both ends of which are fixedly connected to the two sliding sleeves (241), and the third hinge (243) is fixedly connected to the bent part of the V-shaped connector (244).

3. The pin-pulling device according to claim 1, characterized in that, A support rod (222) is vertically connected to the lower middle part of the pressure rod (22), and the other end of the support rod (222) is hinged to the support seat (21) through the first hinge part (211).

4. The pin-pulling device according to claim 3, characterized in that, The pressure rod (22) includes a lifting part (223) and a pressing part (224) located on both sides of the support rod (222). The lifting part (223) is hinged to the lower end of the linkage (23) through the second hinge part (221). The length of the pressing part (224) is greater than the length of the lifting part (223).

5. The pin-pulling device according to claim 1, characterized in that, It also includes an extension rod (25), the rear end of the pressure rod (22) is provided with a first connecting part (225), the front end of the extension rod (25) is provided with a second connecting part (251), and the first connecting part (225) and the second connecting part (251) are detachably connected.

6. The pin-pulling device according to claim 5, characterized in that, The extension rod (25) has a Z-shaped structure.

7. The pin-pulling device according to claim 1, characterized in that, The clamp includes two clamping parts (11) that are hinged to each other. The lower ends of the two clamping parts (11) are bent inward horizontally to form a fastening part (12) that engages with the bottom of the nail head of the pin (3).

8. The pin-pulling device according to claim 1, characterized in that, The two slide rods (212) are respectively arranged at two adjacent corners of the upper end face of the support base (21), and the other two adjacent corners of the upper end face of the support base (21) are respectively vertically arranged with reinforcing rods (213). The top ends of the two slide rods (212) and the two reinforcing rods (213) are fixedly connected by reinforcing blocks (214).

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