Railway under bearing steel plate beam sleeper change truss hoist tool

Abstract

The utility model discloses a kind of applicable to hoisting equipment field's suitable railway through-type steel plate beam replacement of truss crane tool, through the cooperation setting of Z-type plate and clamping part, only need to be placed between two clamping parts, when Z-type plate is subjected to upward lifting tension, two clamping parts are mutually close under the action of two Z-type plates, tension is converted into clamping force by lever principle, and the greater the weight of workpiece, clamping force is stronger, with self-locking, can effectively prevent workpiece from sliding off;Through the setting of protection assembly, when workpiece and clamping part vertically slide during hoisting, friction wheel is rotated by the friction effect of workpiece, so as to be driven transmission gear bar by first transmission wheel and second transmission wheel and slide obliquely towards the just below of workpiece, until transmission gear bar bottom end horizontal section moves to the just below of workpiece, after this, workpiece continues to slide down and be limited by horizontal section of transmission gear bar, to further reduce the risk of workpiece falling off, higher safety.

Description

Technical Field

[0001] This utility model relates to the field of hoisting equipment, and in particular to a hoisting fixture suitable for replacing sleepers on railway under-bearing steel plate girders. Background Technology

[0002] After a period of use, railway bridge sleepers need to be replaced regularly. However, replacing composite material sleepers in under-deck steel plate girder bridges presents the following challenges: (1) Small working space: Due to the main beams on both sides of the under-bearing steel plate girder bridge, the distance between the main beams and the rails is 2.7m, which objectively does not meet the requirement of replacing composite bridge sleepers with a length of 3m.

[0003] (2) Composite bridge sleepers are heavy: a single composite bridge sleeper weighs about 220 kg, which is about twice the weight of a wooden bridge sleeper.

[0004] Traditional replacement methods mostly involve workers dragging bridge sleepers with ropes, which is slow and increases the workload for workers.

[0005] To address the aforementioned issues, a search revealed, for example, a railway construction bridge sleeper replacement device disclosed in patent publication number CN214938856U. This device includes two concave frames, with a bearing box fixedly connected to the top of each frame. Screws are rotatably connected to the left and right sides of the bearing box's inner cavity via bearings. The right end of each screw penetrates the bearing box and is fixedly connected to a handle. A sleeve is threaded onto the outer surface of the screw, and a drive plate is fixedly connected to the bottom of the sleeve. By incorporating a hand-operated hoist, concave brackets, a movable plate, a sliding plate, and a threaded sleeve, the sleeper can be hoisted. The bearing box, screws, sleeve, drive plate, and bearing plate facilitate adjustment of the sleeper's installation position, thus increasing the replacement speed.

[0006] Based on the above search and combined with existing technology, it was found that the connection between the bridge sleeper and the sleeper in the existing technology is relatively inconvenient, and there is a risk of the bridge sleeper falling off during the hoisting process, resulting in low safety. Utility Model Content

[0007] The core of this invention lies in solving the problem of inconvenient connection between the sleeper changer and the bridge sleeper in the prior art through the cooperative arrangement of the Z-shaped plate and the clamping part. It also offers higher safety.

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A hoisting fixture for replacing sleepers on railway under-bearing steel plate girders includes a traveling mechanism, a hoisting beam, a winch, a wire rope, and a lifting clamp. The traveling mechanism is installed on the main beam, and the hoisting crossbeam is installed on the traveling mechanism, which can move along the length of the main beam through the traveling mechanism; The winch is installed in the middle of the lifting beam. One end of the wire rope is fixed and wound around the output end of the winch, and the other end of the wire rope is connected to the lifting clamp. The lifting clamp includes two Z-shaped plates and two clamping parts; The two Z-shaped plates are rotatably connected in the middle. The wire rope is split into two strands at the end away from the winch, and the two strands of wire rope are fixed to the upper end of the two Z-shaped plates respectively. Two clamping parts are installed at the ends of the two Z-shaped plates away from the wire rope, and protective components are installed at both ends of the clamping parts.

[0010] With the combination of Z-shaped plates and clamping parts, the workpiece is placed between the two clamping parts. When the Z-shaped plates are subjected to an upward lifting force, the two clamping parts move closer to each other under the action of the two Z-shaped plates. The pulling force is converted into clamping force through the lever principle. The greater the weight of the workpiece, the stronger the clamping force. It has self-locking properties and can effectively prevent the workpiece from slipping, thus improving safety.

[0011] Furthermore, the protective components include an extension seat, a friction wheel, a transmission assembly, a transmission rack, and a tension spring; The extension seat is fixed to the side end of the clamping part, the friction wheel is rotatably installed on the inner side of the extension seat, the transmission rack slides obliquely through the extension seat, and the bottom end of the transmission rack is set as a horizontal section. The tension spring is fixed between the top end of the transmission rack and the extension seat, and the transmission assembly is connected between the transmission rack and the friction wheel.

[0012] Furthermore, the transmission assembly includes a first transmission wheel, a second transmission wheel, and a transmission gear; The first transmission wheel is fixed coaxially with the friction wheel, and the second transmission wheel is fixed coaxially with the transmission gear. They are rotatably mounted on the inside of the extension base. The second transmission wheel meshes with the first transmission wheel, and the transmission gear meshes with the transmission rack. The diameter of the second transmission wheel is smaller than that of the first transmission wheel, while the diameter of the transmission gear is larger than that of the first transmission wheel.

[0013] Furthermore, the clamping part includes a mounting base and a friction block. The extension base is fixed to both ends of the mounting base, the mounting base is connected to the Z-shaped plate, and the friction block is detachably mounted on the mounting base.

[0014] Furthermore, a threaded rod is fixed to the end face of the friction block near the mounting base, and a through hole is provided on the mounting base for the threaded rod to pass through. A fastening nut with a threaded sleeve on the outside of the threaded rod is provided on the side of the mounting base away from the friction block.

[0015] Furthermore, the traveling mechanism includes a track and traveling wheels. Fixing components are installed at both ends of the track along its axial direction. The fixing components are connected to the main beam. The traveling wheels are installed at both ends of the lifting beam, and the lifting beam moves on the track via the traveling wheels.

[0016] Compared with existing technologies, the advantages of this utility model are: (1) This solution uses the combination of Z-shaped plates and clamping parts. The workpiece is placed between the two clamping parts. When the Z-shaped plate is subjected to an upward lifting force, the two clamping parts move closer to each other under the action of the two Z-shaped plates. The pulling force is converted into clamping force through the lever principle. The greater the weight of the workpiece, the stronger the clamping force. It has self-locking properties, which can effectively prevent the workpiece from slipping. The workpiece is easy to connect and has higher safety.

[0017] (2) By setting up protective components, during the hoisting process, when the workpiece (bridge sleeper) slides vertically with the clamping part, the friction wheel rotates due to the friction of the workpiece. This causes the first transmission wheel to rotate the second transmission wheel, which in turn drives the transmission rack to slide obliquely downwards towards the workpiece until the horizontal section at the bottom of the transmission rack moves to the bottom of the workpiece. After that, when the workpiece continues to slide down, it will be limited by the horizontal section of the transmission rack, thereby further reducing the risk of the workpiece falling off and making it safer. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a structural diagram of the present invention in use; Figure 3 This is a schematic diagram of the lifting clamp of this utility model; Figure 4 This is a schematic diagram of the structure of the clamping part protection assembly of this utility model; Figure 5 This is a schematic diagram of the protective component of this utility model in its stored state; Figure 6 This is a schematic diagram of the protective component of this utility model in the open state; Figure 7 This is a partial structural diagram of the protective component of this utility model.

[0019] Explanation of the labels in the diagram: 1. Track; 2. Lifting beam; 3. Winch; 4. Wire rope; 5. Lifting clamp; 51. Z-shaped plate; 52. Clamping part; 521. Mounting base; 522. Friction block; 523. Threaded rod; 524. Fastening nut; 53. Protective assembly; 531. Extension seat; 532. Friction wheel; 533. First transmission wheel; 534. Second transmission wheel; 535. Transmission gear; 536. Transmission rack; 537. Tension spring; 6. Traveling wheel; 7. Fixing component; 8. Main beam. Detailed Implementation

[0020] The technical solution will now be clearly and completely described with reference to the accompanying drawings in the embodiments of this utility model.

[0021] Example 1: Please see Figure 1-7 A hoisting tool for replacing sleepers on railway under-bearing steel plate girders includes a traveling mechanism, a hoisting beam 2, a winch 3, a wire rope 4, and a hoisting clamp 5. The winch 3 can be a conventional model, such as the JM32T winch 3.

[0022] The traveling mechanism is installed on the main beam 8, and the hoisting crossbeam 2 is installed on the traveling mechanism. It can move along the length of the main beam 8 through the traveling mechanism. Specifically, the traveling mechanism includes a track 1 and traveling wheels 6. Fixing parts 7 are installed at both ends of the axial direction of the track 1. The fixing parts 7 are connected to the main beam 8. The traveling wheels 6 are installed at both ends of the hoisting crossbeam 2. The hoisting crossbeam 2 moves on the track 1 through the traveling wheels 6.

[0023] The winch 3 is installed in the middle of the lifting beam 2. One end of the wire rope 4 is fixed and wound around the output end of the winch 3, and the other end of the wire rope 4 is connected to the lifting clamp 5.

[0024] The lifting clamp 5 includes two Z-shaped plates 51 and two clamping parts 52. The two Z-shaped plates 51 are rotatably connected in the middle. The end of the wire rope 4 away from the winch 3 is divided into two strands, and the two strands of wire rope 4 are respectively fixed to the upper end of the two Z-shaped plates 51. The two clamping parts 52 are respectively installed at the ends of the two Z-shaped plates 51 away from the wire rope 4.

[0025] Based on the above-mentioned arrangement of Z-shaped plate 51 and clamping part 52, the workpiece is placed between the two clamping parts 52. When the Z-shaped plate 51 is subjected to an upward lifting force, the two clamping parts 52 move closer to each other under the action of the two Z-shaped plates 51. The pulling force is converted into clamping force through the lever principle. The greater the weight of the workpiece, the stronger the clamping force. It has self-locking properties and can effectively prevent the workpiece from slipping, thus improving safety.

[0026] In addition, protective components 53 are installed at both ends of the clamping part 52. The protective components 53 include an extension seat 531, a friction wheel 532, a transmission group, a transmission rack 536, and a tension spring 537. The extension seat 531 is fixed to the side end of the clamping part 52. The friction wheel 532 is rotatably mounted on the inner side of the extension seat 531. The transmission rack 536 slides obliquely through the extension seat 531, and the bottom end of the transmission rack 536 is set as a horizontal section. The tension spring 537 is fixed between the top end of the transmission rack 536 and the extension seat 531. The transmission group is connected between the transmission rack 536 and the friction wheel 532.

[0027] Regarding the aforementioned transmission assembly, specifically, as follows: Figure 7 As shown, the transmission assembly includes a first transmission wheel 533, a second transmission wheel 534, and a transmission gear 535. The first transmission wheel 533 is coaxially fixed with the friction wheel 532, and the second transmission wheel 534 is coaxially fixed with the transmission gear 535. They are rotatably mounted on the inner side of the extension base 531. The second transmission wheel 534 meshes with the first transmission wheel 533, and the transmission gear 535 meshes with the transmission rack 536. The diameter of the second transmission wheel 534 is smaller than the diameter of the first transmission wheel 533, and the diameter of the transmission gear 535 is larger than the diameter of the first transmission wheel 533.

[0028] Based on the above structural arrangement, during the hoisting process, when the workpiece (bridge sleeper) slides vertically against the clamping part 52, the friction wheel 532 rotates due to the friction of the workpiece. This rotation is caused by the first transmission wheel 533 driving the second transmission wheel 534 to rotate. The second transmission wheel 534 then drives the transmission rack 536 to slide obliquely downwards towards the workpiece until the bottom horizontal section of the transmission rack 536 moves to the bottom side of the workpiece. After this, when the workpiece continues to slide down, it will be limited by the horizontal section of the transmission rack 536, thereby further reducing the risk of the workpiece falling off and improving safety.

[0029] Example 2: Considering that the friction block 522 wears down during use, reducing clamping stability, based on the first embodiment, such as Figure 4 As shown, the clamping part 52 includes a mounting base 521 and a friction block 522. The extension base 531 is fixed to both ends of the mounting base 521. The mounting base 521 is connected to the Z-shaped plate 51. The friction block 522 is detachably mounted on the mounting base 521. Specifically, a threaded rod 523 is fixed to the end face of the friction block 522 near the mounting base 521. The mounting base 521 is provided with a through hole for the threaded rod 523 to pass through. A fastening nut 524 with a threaded sleeve on the outside of the threaded rod 523 is provided on the side of the mounting base 521 away from the friction block 522, which facilitates the replacement of the friction block 522 and ensures a stable clamping effect of the friction block 522.

[0030] It should be noted that the specific models and specifications of the electrical equipment involved in this solution need to be selected and determined according to the actual specifications of the device. The specific selection and calculation methods adopt the existing technology in this field, so they will not be described in detail here. The power supply and principle of the electrical equipment involved are clear to those skilled in the art, and will not be described in detail here.

[0031] The above description is merely a preferred embodiment of this utility model; it encompasses all the protection scope of this utility model. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be covered within the protection scope of this utility model.

Claims

1. A hoisting fixture for replacing sleepers on railway under-deck steel plate girders, characterized in that: Includes a traveling mechanism, a lifting beam (2), a winch (3), a wire rope (4), and a lifting clamp (5); The traveling mechanism is installed on the main beam (8), and the hoisting crossbeam (2) is installed on the traveling mechanism, which can move along the length of the main beam (8) through the traveling mechanism; The winch (3) is installed in the middle of the lifting beam (2), one end of the wire rope (4) is fixed and wound around the output end of the winch (3), and the other end of the wire rope (4) is connected to the lifting clamp (5). The lifting clamp (5) includes two Z-shaped plates (51) and two clamping parts (52); The two Z-shaped plates (51) are rotatably connected at the middle. The end of the wire rope (4) away from the winch (3) is divided into two strands, and the two strands of wire rope (4) are respectively fixed to the upper end of the two Z-shaped plates (51). The two clamping parts (52) are respectively installed at the ends of the two Z-shaped plates (51) away from the wire rope (4). Both ends of the clamping parts (52) are equipped with protective components (53).

2. The hoisting fixture for replacing sleepers on a railway under-deck steel plate girder according to claim 1, characterized in that: The protective assembly (53) includes an extension base (531), a friction wheel (532), a transmission assembly, a transmission rack (536), and a tension spring (537). The extension seat (531) is fixed to the side end of the clamping part (52), the friction wheel (532) is rotatably installed on the inner side of the extension seat (531), the transmission rack (536) slides obliquely through the extension seat (531), and the bottom end of the transmission rack (536) is set as a horizontal section, the tension spring (537) is fixed between the top end of the transmission rack (536) and the extension seat (531), and the transmission assembly is connected between the transmission rack (536) and the friction wheel (532).

3. The hoisting fixture for replacing sleepers on a railway under-deck steel plate girder according to claim 2, characterized in that: The transmission assembly includes a first transmission wheel (533), a second transmission wheel (534), and a transmission gear (535). The first transmission wheel (533) is coaxially fixed with the friction wheel (532), the second transmission wheel (534) is coaxially fixed with the transmission gear (535), and they are rotatably mounted on the inner side of the extension base (531). The second transmission wheel (534) meshes with the first transmission wheel (533), and the transmission gear (535) meshes with the transmission rack (536). The diameter of the second transmission wheel (534) is smaller than the diameter of the first transmission wheel (533), and the diameter of the transmission gear (535) is larger than the diameter of the first transmission wheel (533).

4. The hoisting fixture for replacing sleepers on a railway under-deck steel plate girder according to claim 2, characterized in that: The clamping part (52) includes a mounting base (521) and a friction block (522). The extension base (531) is fixed to both ends of the mounting base (521). The mounting base (521) is connected to the Z-shaped plate (51). The friction block (522) is detachably mounted on the mounting base (521).

5. The hoisting fixture for replacing sleepers on a railway under-deck steel plate girder according to claim 4, characterized in that: The friction block (522) has a threaded rod (523) fixed on its end face near the mounting base (521). The mounting base (521) has a through hole through which the threaded rod (523) passes. The mounting base (521) has a fastening nut (524) threaded onto the outside of the threaded rod (523) on the side away from the friction block (522).

6. The hoisting fixture for replacing sleepers on a railway under-deck steel plate girder according to claim 1, characterized in that: The walking mechanism includes a track (1) and walking wheels (6). Fixing members (7) are installed at both ends of the track (1) along the axial direction. The fixing members (7) are connected to the main beam (8). The walking wheels (6) are installed at both ends of the hoisting beam (2). The hoisting beam (2) moves on the track (1) through the walking wheels (6).

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