Railway sleeper hoisting clamp

Abstract

The present application provides a kind of sleeper hoist clamp, it is related to hoisting technical field, sleeper hoist clamp includes frame, left clamp and right clamp are equipped with in frame left and right sides, connecting barrel is equipped with in frame center, hoist pulley and empty load pulley are equipped with from top to bottom in connecting barrel, hoist pulley and empty load pulley can be detachably connected, connecting barrel left and right sides are equipped with fixed pulley set and two reversing pulleys, left clamp and right clamp are all included moving rod, two reversing pulleys are located between two moving rods and frame left and right side frame respectively, first steel wire rope is wound over hoist pulley, for pulling left clamp and right clamp to converge, second steel wire rope is wound over empty load pulley, for pulling left clamp and right clamp to separate.The present application is by setting first steel wire rope, second steel wire rope, cooperate empty load pulley, hoist pulley, fixed pulley set, reversing pulley, pull two clamping plates to converge, open, can simultaneously to multiple sleepers are clamped, replace manual operation, improve hoisting efficiency.

Description

Technical Field

[0001] This invention relates to the field of hoisting technology, and more specifically, to a sleeper hoisting clamp. Background Technology

[0002] During railway construction, sleepers need to be transported from the base to the construction site using flatbed trucks. To facilitate the lifting of sleepers by the track-laying machine, the sleepers need to be neatly arranged on the flatbed trucks when loading them at the sleeper base. The traditional method of sleeper lifting involves wrapping steel wire ropes around the sleepers and lifting them one by one, which requires manual operation and has low lifting efficiency. Summary of the Invention

[0003] The problem this invention aims to solve is how to improve the hoisting efficiency of railway sleepers.

[0004] To address this, the present invention provides a sleeper lifting clamp, comprising a frame, a left clamp, a right clamp, a connecting cylinder, a fixed pulley block, a reversing pulley, a first wire rope, and a second wire rope. The frame is a cuboid structure. The left and right clamps are movably mounted on the frame and are respectively located on the left and right sides of the frame. The left and right clamps are used to clamp the sleeper. Both the left and right clamps include a moving rod. The connecting cylinder is vertically installed at the center of the frame. Inside the connecting cylinder, from top to bottom, are a lifting pulley and an unloaded pulley that can move up and down relative to the connecting cylinder. The lifting pulley and the unloaded pulley are detachably connected. The lifting pulley is used for upward lifting. The fixed pulley block is located on both the left and right sides of the connecting cylinder. The fixed pulley block includes a first fixed pulley and a second fixed pulley arranged side by side in the front-back direction, and two reversing pulleys. The connecting cylinder is connected to the left and right sides of the frame, respectively, and located between the left and right edges of the frame and the two movable rods on the left and right sides of the frame. Each of the left and right sides of the connecting cylinder has a first through groove for the first and second wire ropes to pass through. One end of the first wire rope is connected to the movable rod on the left, then passes sequentially around the first fixed pulley on the left, the lifting pulley, and the first fixed pulley on the right, before connecting to the movable rod on the right. One end of the second wire rope is connected to the movable rod on the left, then passes sequentially around the reversing pulley on the left, the second fixed pulley on the left, the unloaded pulley, the second fixed pulley on the right, and the reversing pulley on the right, before connecting to the movable rod on the right. The length of the first wire rope is greater than the length of the second wire rope; when the second wire rope is taut, the first wire rope is slack.

[0005] Optionally, the connecting cylinder is further provided with a hanger, an automatic rotating mechanism, and an unloaded pulley seat. The hanger is used for hoisting and is installed at the upper end of the connecting cylinder. Two heavy-duty pulleys are connected below the hanger and are arranged along the left and right direction of the frame. The automatic rotating mechanism is connected below the heavy-duty pulleys, and the unloaded pulley seat is provided below the automatic rotating mechanism. The unloaded pulley seat is detachably connected to the automatic rotating mechanism, and the unloaded pulley is connected below the unloaded pulley seat.

[0006] Optionally, two first connecting plates are connected below the hanger along the front and rear sides of the frame, two lifting pulleys are connected between the two first connecting plates, and the automatic rotating mechanism is connected below the first connecting plates.

[0007] Optionally, the automatic rotating mechanism includes an outer cylinder, a first corrugated block, a second corrugated block, a rotating column, a limiting block, an extension rod, and a rotating block. The outer cylinder is connected below the first connecting plate. The first corrugated block and the second corrugated block are respectively disposed on the upper and lower sides inside the outer cylinder. Four corrugations are evenly distributed around the axis of the outer cylinder at the lower end of the first corrugated block and the upper end of the second corrugated block, and the corrugations at the lower end of the first corrugated block and the corrugations at the upper end of the second corrugated block are staggered. The first corrugated block, the second corrugated block, and the lower end of the outer cylinder... A third connecting hole is provided on the surface in the vertical direction. The rotating column passes through the third connecting hole and is used to slide up and down relative to the outer cylinder. The limiting block is provided on the peripheral surface of the rotating column and is used to be embedded in the corrugations of the first corrugated block or the second corrugated block. The extension rod is connected to the bottom of the rotating column and extends in the vertical direction. The rotating block is connected to the bottom of the extension rod and is set perpendicular to the extension rod. The unloaded pulley seat is a hollow seat structure. A connecting groove for the rotating block to pass through is provided on the upper surface of the hollow seat.

[0008] Optionally, the sleeper hoisting fixture also includes a heavy-duty pin. The front and rear ends of the connecting cylinder are provided with a second through groove and a third through groove from top to bottom. A second connecting plate is connected above the outer cylinder. Both the second connecting plate and the first connecting plate are provided with shaft holes for the heavy-duty pin to pass through. The heavy-duty pin extends in the front-rear direction and passes through the second through groove. The heavy-duty pin is used to move in the second through groove. The unloaded pulley seat is provided with an unloaded pin extending in the front-rear direction. The unloaded pin passes through the third through groove and is used to move in the third through groove.

[0009] Optionally, the sleeper hoisting clamp further includes a first connecting rod, with two first connecting rods respectively connected to the left and right sides of the lower end of the frame. The first connecting rods are arranged parallel to the moving rods, and the two first connecting rods are respectively located between the left and right moving rods and the left and right ends of the frame. The two reversing pulleys are respectively connected to the two first connecting rods.

[0010] Optionally, the sleeper hoisting clamp further includes a fixed rod. The movable rod has a first connecting hole in the left-right direction. The fixed rod is mounted on the first connecting hole. One end of the second wire rope is connected to the fixed rod on the left side and passes through the first connecting hole on the left side. Then, it passes in sequence around the reversing pulley on the left side, the second fixed pulley on the left side, the unloaded pulley, the second fixed pulley on the right side, and the reversing pulley on the right side, and passes through the first connecting hole on the right side, and is connected to the fixed rod near the right side.

[0011] Optionally, both the left clamp and the right clamp further include clamping plates and sliding rods. Through holes are provided on both the left and right side frames of the frame. The sliding rod passes through the through holes. One end of the sliding rod outside the frame is perpendicularly connected to the clamping plate, and the other end of the sliding rod inside the frame is perpendicularly connected to the moving rod. The two clamping plates are used to clamp the two ends of the sleeper.

[0012] Optionally, both the left clamp and the right clamp further include a support plate, which is connected to the lower end of the clamp and is used to support the sleeper.

[0013] Optionally, the sleeper hoisting fixture also includes limiting plates, a plurality of which are respectively connected to the front and rear ends of the frame and extend downward toward the frame.

[0014] Compared with the prior art, the advantages of the sleeper lifting clamp of the present invention are:

[0015] In this embodiment of the invention, a cuboid frame is provided, with a left clamp and a right clamp respectively located at the left and right ends of the frame, i.e., at the ends along the positive and negative X-axis. The left and right clamps can hold the sleepers at the left and right ends. Both the left and right clamps include a moving rod, which extends along the Y-axis and is located inside the two side borders of the frame along the X-axis in the plane containing the X and Y axes. A connecting cylinder is connected to the center of the frame, extending vertically, i.e., along the Z-axis. The connecting cylinder is connected to the frame as a whole. Inside the connecting cylinder, from top to bottom, there are a suspended pulley and an unloaded pulley, which are detachably connected. The suspended pulley can move upward along the connecting cylinder during hoisting. When the lifting pulley and the unloaded pulley are connected, they can be pulled upwards together by the crane. At this time, the unloaded pulley drives the second wire rope to open the left and right clamps. When the lifting pulley and the unloaded pulley are separated, the lifting pulley moves upwards while the unloaded pulley does not move. At this time, the lifting pulley drives the first wire rope to close the left and right clamps. Fixed pulley groups are provided on both sides of the connecting cylinder, i.e., at the lower ends of both sides along the X-axis. The fixed pulley groups include a first fixed pulley and a second fixed pulley arranged side-by-side along the Y-axis. The first and second fixed pulleys are used to wind the first and second wire ropes respectively to regulate the extension direction of the two wire ropes. The connecting cylinder along the X-axis... Both sides of the frame have first through slots to allow the first and second wire ropes to pass through the connecting cylinder and wind around the lifting pulley or unloaded pulley inside the connecting cylinder. The frame also has two reversing pulleys, symmetrically arranged along the Y-axis. One reversing pulley is located between the left side frame and the left-side moving rod, and the other is located between the right side frame and the right-side moving rod. One end of the first wire rope is connected to the left-side moving rod, then sequentially passes over the left-side fixed pulley, through the left-side first through slot, around the lifting pulley, through the right-side first through slot, and around the right-side first fixed pulley, finally connecting to the right-side moving rod. One end of the second wire rope is connected to the left-side moving rod. Then, it passes through the left reversing pulley, the left second fixed pulley, the left first through slot, the unloaded pulley, the right first through slot, the right second fixed pulley, and the right reversing pulley in sequence, and connects to the right moving rod. When it is necessary to clamp the sleeper, the lifting pulley is separated from the unloaded pulley. The lifting pulley can be pulled upward by the crane, so that the first wire rope is tightened and pulls the two moving rods along the X-axis towards the center of the frame. This causes the left clamp and the right clamp to move along the X-axis towards the center of the frame, clamping the two ends of multiple sleepers and lifting them. Clamping multiple sleepers at the same time is beneficial for the automatic alignment of multiple sleepers during the hoisting and transportation process, which can replace manual alignment operations and improve hoisting efficiency.After the sleeper is moved and placed in the designated position, the lifting pulley is connected to the unloaded pulley, and the first wire rope is slack. Then, by pulling the lifting pulley and the unloaded pulley upwards together, since the first wire rope is longer than the second wire rope, the second wire rope tightens first. At this time, the first wire rope is still slack. After the second wire rope tightens, it pulls the moving rod. Since the second wire rope is connected to the moving rod after changing direction via the reversing pulley, at this time, the second wire rope pulls the moving rod away from the center of the frame along the X-axis. Consequently, the left and right clamps move away from the center of the frame along the X-axis to open the two clamps, thereby releasing the sleeper and completing one sleeper hoisting operation. This invention can clamp and hoist multiple sleepers simultaneously, replacing manual winding of the wire rope, and can effectively improve hoisting efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the connection structure of the sleeper hoisting clamp according to an embodiment of the present invention;

[0017] Figure 2 for Figure 1 Enlarged view of section I;

[0018] Figure 3 This is a schematic diagram of the internal structure of the connecting cylinder according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the internal structure of the outer cylinder according to an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the structure of the unloaded pulley seat according to an embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the clamp in its retracted state according to an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the clamp in the open state according to an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1-Frame; 21-Connecting cylinder; 211-Second through groove; 212-Third through groove; 22-Hanger; 231-Outer cylinder; 232-First corrugated block; 233-Second corrugated block; 234-Rotating column; 235-Limiting block; 236-Extending rod; 237-Rotating block; 24-Lifting pulley; 251-Unloaded pulley seat; 252-Unloaded pulley; 253-Connecting groove; 26-First connecting plate; 27-Second connecting plate Plate; 28-Heavy-load pin; 29-Unloaded pin; 31-First connecting rod; 32-Connecting frame; 321-First rod; 322-Second rod; 41-First fixed pulley; 42-Second fixed pulley; 5-Reversing pulley; 61-First wire rope; 62-Second wire rope; 71-Clamping plate; 72-Sliding rod; 73-Moving rod; 74-First connecting hole; 75-Fixing rod; 76-Support plate; 8-Limiting plate; 9-Reinforcing rod. Detailed Implementation

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] It should be noted that in the description of this invention, the orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "top," "bottom," "front," "back," "inner," and "outer" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention. They are not intended to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this invention.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0028] Furthermore, although specific embodiments have been described herein, it should be understood that these embodiments are merely examples of the principles and applications of the invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that different dependent claims and features herein can be combined in ways not used as described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other embodiments.

[0029] To solve the above problems, such as Figures 1 to 7As shown, this invention provides a sleeper hoisting clamp, including a frame 1, a left clamp, a right clamp, a connecting cylinder 21, a fixed pulley block, a reversing pulley 5, a first wire rope 61, and a second wire rope 62. The frame 1 is a cuboid structure. The left and right clamps are movably mounted on the frame 1 and are respectively located on the left and right sides of the frame 1. The left and right clamps are used to clamp the sleeper. Both the left and right clamps include a moving rod 73. The connecting cylinder 21 is vertically... Installed at the center of the frame 1, the connecting cylinder is provided with a lifting pulley 24 and an unloaded pulley 252 arranged sequentially from top to bottom, which are movable relative to the connecting cylinder. The lifting pulley 24 and the unloaded pulley 252 are detachably connected. The lifting pulley 24 is used for upward lifting. Fixed pulley groups are provided on both the left and right sides of the connecting cylinder 21. Each fixed pulley group includes a first fixed pulley 41 and a second fixed pulley 42 arranged side-by-side in the front-back direction. The two reversing pulleys 5 are respectively connected to the... The connecting cylinder 21 has first through slots on both sides of the frame 1, located between the left and right edges of the frame 1 and the two movable rods 73 on the left and right sides of the frame 1. The first wire rope 61 and the second wire rope 62 pass through first through slots on both sides of the connecting cylinder 21. One end of the first wire rope 61 is connected to the movable rod 73 on the left side, and then passes through the first fixed pulley 41 on the left side, the lifting pulley 24, and the first fixed pulley 41 on the right side, and is connected to the movable rod 73 on the right side. One end of the second wire rope 62 is connected to the movable rod 73 on the left side, and then passes through the reversing pulley 5 on the left side, the second fixed pulley 42 on the left side, the unloaded pulley 252, the second fixed pulley 42 on the right side, and the reversing pulley 5 on the right side, and is connected to the movable rod 73 on the right side. The length of the first wire rope 61 is greater than the length of the second wire rope 62. When the second wire rope 62 is taut, the first wire rope 61 is slack.

[0030] In this embodiment, a cuboid frame 1 is provided, with a left clamp and a right clamp respectively located at the left and right ends of the frame 1, i.e., at the ends along the positive and negative X-axis directions. The left and right clamps can hold the sleepers at the left and right ends. Both the left and right clamps include a moving rod 73, which extends along the Y-axis direction and is located inside the two side borders of the frame 1 along the X-axis direction in the plane containing the X and Y axes. A connecting cylinder 21 is connected to the center of the frame 1, extending vertically, i.e., along the Z-axis direction. The connecting cylinder 21 is connected to the frame 1 as a whole. Inside the connecting cylinder 21, from top to bottom, are arranged a lifting pulley 24 and an unloaded pulley 252. The lifting pulley 24 and the unloaded pulley 252 are detachably connected. The lifting pulley 24 can move upwards along the connecting cylinder 21 during hoisting. When the lifting pulley 24 and the unloaded pulley 252 are connected together, they can be pulled upwards together by a crane. At this time, the second wire rope 62 driven by the unloaded pulley 252 can open the left and right clamps. When 252 separates, the lifting pulley 24 moves upward, while the unloaded pulley 252 remains stationary. At this time, the lifting pulley 24 drives the first wire rope 61 to achieve the retraction of the left and right clamps. Fixed pulley groups are provided on both sides of the connecting cylinder 21, i.e., at the lower ends of both sides along the X-axis. Each fixed pulley group includes a first fixed pulley 41 and a second fixed pulley 42 arranged side-by-side along the Y-axis. The first fixed pulley 41 and the second fixed pulley 42 are respectively used to wind the first wire rope 61 and the second wire rope 62 to regulate the two wires. The extension direction of the rope; the connecting cylinder 21 has first through slots on both sides along the X-axis, so that the first wire rope 61 and the second wire rope 62 can pass through the connecting cylinder 21 to be wound around the lifting pulley 24 or the unloaded pulley 252 inside the connecting cylinder 21; the frame 1 is also provided with two reversing pulleys 5, which are symmetrically arranged along the Y-axis. One reversing pulley 5 is located between the left side frame of the frame 1 and the left moving rod 73, and the other reversing pulley 5 is located between the right side frame of the frame 1 and the right moving rod 73, such as Figure 6 As shown, one end of the first wire rope 61 is connected to the moving rod 73 on the left, then passes sequentially around the first fixed pulley 41 on the left, through the first through groove on the left, around the lifting pulley 24, through the first through groove on the right, and around the first fixed pulley 41 on the right, before connecting to the moving rod 73 on the right. Figure 7As shown, one end of the second wire rope 62 is connected to the left-side moving rod 73, and then passes sequentially around the left-side reversing pulley 5, the left-side second fixed pulley 42, the left-side first through groove, the unloaded pulley 252, the right-side first through groove, the right-side second fixed pulley 42, and the right-side reversing pulley 5, before connecting to the right-side moving rod 73. When it is necessary to clamp the sleeper, the lifting pulley 24 is separated from the unloaded pulley 252. The lifting pulley 24 can be pulled upward by a crane, causing the first wire rope 61 to tighten and pull the two moving rods 73 to move towards the center of the frame 1 along the X-axis. (Refer to...) Figure 6 As shown, this causes the left and right clamps to move towards the center of frame 1 along the X-axis, clamping both ends of multiple sleepers and lifting them. Clamping multiple sleepers simultaneously facilitates automatic alignment during hoisting and transport, replacing manual alignment and improving hoisting efficiency. After the sleepers are moved and placed in the designated position, the lifting pulley 24 is connected to the unloaded pulley 252, and the first wire rope 61 is slack. Then, by pulling the lifting pulley 24 and the unloaded pulley 252 upwards, since the first wire rope 61 is longer than the second wire rope 62, the second wire rope 62 tightens first. At this time, the first wire rope 61 is still slack. After the second wire rope 62 tightens, it pulls the moving rod 73. Since the second wire rope 62 is connected to the moving rod 73 after changing direction via the reversing pulley 5, the second wire rope 62 pulls the moving rod 73 away from the center of frame 1 along the X-axis. (Refer to...) Figure 7 As shown, the left and right clamps then move away from the center of frame 1 along the X-axis to open the two clamps, thereby releasing the sleeper and completing one sleeper hoisting operation. This invention can clamp and hoist multiple sleepers simultaneously, replacing manual winding of steel wire ropes, and can effectively improve hoisting efficiency.

[0031] Specifically, the fixed pulley block can be connected to the connecting cylinder 21 through the fixed pulley seat. The size of the first through groove is sufficient to ensure that the first wire rope 61 and the second wire rope 62 do not contact the groove wall of the first through groove. No specific limitation is made here. The sleeper hoisting fixture also includes a reinforcing rod 9. One end of the reinforcing rod 9 is connected to the top of the frame 1, and the other end is connected to the peripheral surface of the connecting cylinder 21. The reinforcing rod 9 can make the connection structure between the connecting cylinder 21 and the frame 1 more stable. There can be multiple reinforcing rods 9. Multiple reinforcing rods 9 are evenly distributed around the periphery of the connecting cylinder 21 to make the connection structure between the connecting cylinder 21 and the frame 1 more stable.

[0032] Optionally, such as Figure 1 and Figure 3As shown, the connecting cylinder 21 is also equipped with a hanger 22, an automatic rotating mechanism, and an unloaded pulley seat 251. The hanger 22 is used for hoisting and is installed at the upper end of the connecting cylinder 21. Two lifting pulleys 24 are connected below the hanger 22. The two lifting pulleys 24 are arranged along the left and right direction of the frame 1. The automatic rotating mechanism is connected below the lifting pulleys 24. The unloaded pulley seat 251 is provided below the automatic rotating mechanism. The unloaded pulley seat 251 is detachably connected to the automatic rotating mechanism. The unloaded pulley 252 is connected below the unloaded pulley seat 251.

[0033] In this embodiment, a second connecting hole is provided on the upper end face of the connecting cylinder 21. The hanger 22 is partially inserted through the second connecting hole and can slide along the Z-axis direction inside the connecting cylinder 21. The crane can lift the part of the hanger 22 located outside the connecting cylinder 21. Two lifting pulleys 24 are connected below the hanger 22. The hanger 22 is set up to facilitate the lifting by the crane. The two lifting pulleys 24 are arranged side by side along the X-axis direction. The two lifting pulleys 24 make the first wire rope more stable under the force. An automatic rotating mechanism is connected below the lifting pulleys 24. The automatic rotating mechanism is detachably connected to the unloaded pulley seat 251. An unloaded pulley 252 is connected below the unloaded pulley seat 251. The automatic rotating mechanism and the unloaded pulley seat 251 are set up to facilitate the detachable connection. The unloaded pulley seat 251 provides an installation position for the unloaded pulley 252.

[0034] Optionally, such as Figure 3 As shown, two first connecting plates 26 are connected below the hanger 22 along the front and rear sides of the frame 1, two lifting pulleys 24 are connected between the two first connecting plates 26, and the automatic rotation mechanism is connected below the first connecting plates 26.

[0035] In this embodiment, the portion of the hanger 22 located inside the connecting cylinder 21 is connected to two first connecting plates 26. The two first connecting plates 26 are arranged back and forth along the Y-axis direction. The first connecting plates 26 can prevent the hanger 22 from detaching from the connecting cylinder 21. Between the two first connecting plates 26, two load-bearing pulleys 24 are arranged side by side along the X-axis direction. The first connecting plates 26 provide installation positions for the load-bearing pulleys 24.

[0036] Specifically, the lifting pulley 24 can be connected between the two first connecting plates 26 by a pin. The connection method between the unloaded pulley seat 251 and the unloaded pulley 252 is the same as the connection method between the hanger 22 and the lifting pulley 24, and will not be described again here.

[0037] Optionally, such as Figures 3 to 5As shown, the automatic rotating mechanism includes an outer cylinder 231, a first corrugated block 232, a second corrugated block 233, a rotating column 234, a limiting block 235, an extension rod 236, and a rotating block 237. The outer cylinder 231 is connected below the first connecting plate 26. The first corrugated block 232 and the second corrugated block 233 are respectively disposed on the upper and lower sides inside the outer cylinder 231. The lower end of the first corrugated block 232 and the upper end of the second corrugated block 233 are evenly distributed with four corrugations around the axis of the outer cylinder 231, and the corrugations at the lower end of the first corrugated block 232 and the corrugations at the upper end of the second corrugated block 233 are arranged alternately. The first corrugated block 232, the second corrugated block 233, and the... The lower surface of the outer cylinder 231 is provided with a third connecting hole in the vertical direction. The rotating column 234 passes through the third connecting hole and is used to slide up and down relative to the outer cylinder 231. The limiting block 235 is provided on the peripheral surface of the rotating column 234 and is used to be embedded in the corrugations of the first corrugated block 232 or the second corrugated block 233. The extension rod 236 is connected below the rotating column 234 and extends in the vertical direction. The rotating block 237 is connected below the extension rod 236 and is set perpendicular to the extension rod 236. The unloaded pulley seat 251 is a hollow seat structure. The upper surface of the hollow seat is provided with a connecting groove 253 for the rotating block 237 to pass through.

[0038] In this embodiment, the automatic rotation mechanism includes an outer cylinder 231, which is a hollow cylindrical structure. A first corrugated block 232 is located at the top of the outer cylinder 231, and a second corrugated block 233 is located at the bottom. The first corrugated block 232 and the second corrugated block 233 are not connected. A third connecting hole extending along the Z-axis is provided on the lower surface of the first corrugated block 232, the second corrugated block 233, and the outer cylinder 231. The corrugations of the first corrugated block 232 are located on its lower surface and are evenly distributed around the Z-axis, with a total of four corrugations, each crest spaced 90 degrees apart. The corrugations of the second corrugated block 233 are located on its upper surface and are evenly distributed around the Z-axis, with a total of four corrugations, each crest spaced 90 degrees apart. The crest of wave 2 corresponds to the trough of the second corrugated block 233 in the Z-axis direction. The rotating column 234 passes through the third connecting hole, and its outer peripheral surface mates with the wall of the third connecting hole. The rotating column 234 can move relative to the first corrugated block 232 and the second corrugated block 233 along the Z-axis direction. A limiting block 235 is provided on the outer peripheral surface of the rotating column 234. The limiting block 235 is located between the first corrugated block 232 and the second corrugated block 233 in the Z-axis direction. The limiting block 235 is circular in shape, corresponding to the corrugated shape of the first corrugated block 232 and the second corrugated block. The limiting block 235 can move between the first corrugated block 232 and the second corrugated block 233 to prevent the rotating column 234 from detaching from the second corrugated block 233. The center of the lower part of the rotating column 234... An extension rod 236 extending along the Z-axis is connected to the outer cylinder 231. A rotating block 237 is connected below the extension rod 236 and is perpendicular to the extension rod 236. An unloaded pulley seat 251 is provided below the outer cylinder 231, and an unloaded pulley 252 is connected below the unloaded pulley seat 251. The unloaded pulley seat 251 is a hollow structure, and a connecting groove 253 extending along the Y-axis is opened on its upper surface. When the rotating block 237 is in its initial position, it also extends along the Y-axis. When no hoisting is required, the rotating block 237 passes through the connecting groove 253 under its own weight and enters the unloaded pulley seat 251. At this time, the limiting block 235 is located at the trough of the second corrugated block 233. The hoist controls the lifting frame 22 to move downward, driving the outer cylinder 231, the first corrugated block 232, and... The second corrugated block 233 moves downward, and the rotating column 234 rotates 45 degrees around the Z-axis under the guidance of the corrugations. The position of the limiting block 235 moves from the trough of the second corrugated block 233 to the trough of the first corrugated block 232. At this time, the crane control frame 22 drives the outer cylinder 231, the first corrugated block 232, and the second corrugated block 233 to move upward. The rotating column 234 continues to rotate 45 degrees around the Z-axis under the guidance of the corrugations. The position of the limiting block 235 moves from the trough of the first corrugated block 232 to the trough of the second corrugated block 233. At this time, the trough of the second corrugated block 233 where the limiting block 235 is located is 90 degrees different from the trough of the second corrugated block 233 where the limiting block 235 is located at the initial position. At this time, the rotating block 237 is perpendicular to the connecting groove 253.The crane continues to pull the lifting frame 22, causing the outer cylinder 231, the first corrugated block 232, and the second corrugated block 233 to move upwards. This drives the rotating block 237 to move the unloaded pulley seat 251 upwards. The automatic rotating mechanism is connected to the unloaded pulley seat 251, that is, connecting the heavy-duty pulley 24 and the unloaded pulley 252 into a whole. The heavy-duty pulley 24 and the unloaded pulley 252 can move upwards together. This state is the clamp open state. Repeating the above operation allows the rotating block 237 to continue rotating 90 degrees. At this time, the rotating block 237 can disengage from the unloaded pulley seat 251 along the connecting groove 253, separating the heavy-duty pulley 24 from the unloaded pulley 252. When the heavy-duty pulley 24 moves upwards, the unloaded pulley 252 does not move. This state is the clamp closed state, realizing the detachable connection between the automatic rotating mechanism and the unloaded pulley seat 251.

[0039] Optionally, such as Figure 1 and Figure 3 As shown, the sleeper hoisting fixture also includes a heavy-duty pin 28. The front and rear ends of the connecting cylinder 21 are provided with a second through groove 211 and a third through groove 212 from top to bottom. A second connecting plate 27 is connected above the outer cylinder 231. The second connecting plate 27 and the first connecting plate 26 are provided with shaft holes for the heavy-duty pin 28 to pass through. The heavy-duty pin 28 extends in the front-rear direction and passes through the second through groove 211. The heavy-duty pin 28 is used to move in the second through groove 211. The unloaded pulley seat 251 is provided with an unloaded pin 29 extending in the front-rear direction. The unloaded pin 29 passes through the third through groove 212 and is used to move in the third through groove 212.

[0040] In this embodiment, a second through groove 211 is provided on both the front and rear surfaces of the connecting cylinder 21 along the Y-axis direction. The second through groove 211 extends along the Z-axis direction. A second connecting plate 27 is connected above the outer cylinder 231. The second connecting plate 27 coincides with the first connecting plate 26 in the Y-axis direction. A shaft hole extending along the Y-axis direction is provided on both the first connecting plate 26 and the second connecting plate 27. A heavy-duty pin 28 is provided through the shaft hole, and both ends of the heavy-duty pin 28 protrude from the two second through grooves 211 along the Y-axis direction. The heavy-duty pin 28 connects the first connecting plate 26 and the second connecting plate 27 together, that is, connects the hanger 22, the heavy-duty pulley 24 and the automatic rotation mechanism together. The second through groove 211 can limit the movement distance of the heavy-duty pin 28 along the Z-axis direction, that is, limit the movement distance of the hanger 22 and the heavy-duty pulley. The movement distance of the automatic rotating mechanism is as follows: During hoisting, the heavy-duty pin 28 abuts against the upper groove wall of the second through groove 211, and the hoisting force is transmitted from the heavy-duty pin 28 to the connecting cylinder 21, which lifts the entire sleeper hoisting fixture. A third through groove 212 is opened below the second through groove 211, and the third through groove 212 extends along the Z-axis. An empty pin 29 extending along the Y-axis is provided on the empty pulley seat 251. The two ends of the empty pin 29 pass through the two third through grooves 212, and the empty pin 29 can move along the Z-axis with the empty pulley seat 251. The third through groove 212 can limit the movement distance of the empty pin 29. During hoisting, the empty pin 29 abuts against the upper groove wall of the third through groove 212, and the hoisting force is transmitted from the empty pin 29 to the connecting cylinder 21, which lifts the entire sleeper hoisting fixture.

[0041] Optionally, such as Figure 1 As shown, the sleeper hoisting clamp also includes a first connecting rod 31. The two first connecting rods 31 are respectively connected to the left and right sides of the lower end of the frame 1. The first connecting rods 31 are arranged parallel to the moving rods 73. The two first connecting rods 31 are respectively located between the left and right moving rods 73 and the left and right ends of the frame 1. The two reversing pulleys 5 are respectively connected to the two first connecting rods 31.

[0042] In this embodiment, a first connecting rod 31 is also provided below the frame 1. The two ends of the first connecting rod 31 are connected to the two sides of the frame 1 along the Y-axis direction. The first connecting rod 31 extends along the Y-axis direction. The position of the first connecting rod 31 in the X-axis direction is between the left end of the frame 1 and the moving rod 73. A reversing pulley 5 is provided at the center of the first connecting rod 31 to provide a connection position for the reversing pulley 5.

[0043] Specifically, the reversing pulley 5 can be connected to the first connecting rod 31 via the reversing pulley seat. The frame 1 is also provided with a first rod 321 and a second rod 322. The two first rods 321 are connected between the two first connecting rods 31, and the two second rods 322 are connected between the two first rods 321. The two first rods 321 and the two second rods 322 are symmetrical with respect to the center of the frame 1. The connecting cylinder 21 is connected between the two second rods 322, which facilitates connecting the connecting cylinder 21 to the center of the frame 1.

[0044] Optionally, such as Figure 1 and Figure 2 As shown, the sleeper hoisting clamp also includes a fixed rod 75. The movable rod 73 has a first connecting hole 74 in the left-right direction. The fixed rod 75 is mounted on the first connecting hole 74. One end of the second wire rope 62 is connected to the fixed rod 75 on the left and passes through the first connecting hole 74 on the left. Then it passes in sequence around the reversing pulley 5 on the left, the second fixed pulley 42 on the left, the unloaded pulley 252, the second fixed pulley 42 on the right, and the reversing pulley 5 on the right, and passes through the first connecting hole 74 on the right and is connected to the fixed rod 75 near the right.

[0045] In this embodiment, a first connecting hole 74 is provided on the moving rod 73 at a position corresponding to the reversing pulley 5 in the X-axis direction. A fixed rod 75 is provided on the moving rod 73, and the fixed rod 75 is mounted on the first connecting hole 74. The first connecting hole 74 is provided so that the second wire rope 62 can pass directly through the first connecting hole 74 through the moving rod 73, avoiding interference between the second wire rope 62 and the moving rod 73, and facilitating the transmission of tension by the second wire rope 62.

[0046] Optionally, such as Figure 1 As shown, both the left clamp and the right clamp further include a clamping plate 71 and a sliding rod 72. Through holes are provided on the left and right side frames of the frame 1. The sliding rod 72 passes through the through holes. The end of the sliding rod 72 located outside the frame 1 is perpendicularly connected to the clamping plate 71, and the end of the sliding rod 72 located inside the frame 1 is perpendicularly connected to the moving rod 73. The two clamping plates 71 are used to clamp the two ends of the sleeper.

[0047] In this embodiment, by setting a clamping plate 71 and a sliding rod 72, through holes are opened on the left and right side frames of the frame 1 along the X-axis direction. The size of the through holes corresponds to the size of the sliding rod 72. The sliding rod 72 passes through the through holes. One end of the sliding rod 72 outside the frame 1 is connected to the clamping plate 71, and the other end inside the frame 1 is connected to the moving rod 73. The moving rod 73 and the clamping plate 71 both extend along the Y-axis direction. The sliding rod 72 can slide relative to the frame 1 along the X-axis direction, driving the clamping plate 71 to move in the X-axis direction, which facilitates the sliding connection of the left clamp and the right clamp on the frame 1. The clamping plate 71 can clamp the two ends of the sleeper.

[0048] Specifically, the sliding rod 72 is attached to the first connecting rod 31, which provides support for the sliding rod 72, making the sliding rod 72 slide more smoothly along the X-axis. Multiple sliding rods 72 are set, with multiple sliding rods 72 on the left and right clamps evenly distributed along the Y-axis. The through holes opened on the left and right ends of the frame 1 correspond one-to-one with the sliding rods 72, which can make the connection between the clamping plate 71 and the moving rod 73 more stable, and the sliding rod 72 slides more smoothly relative to the frame 1 along the X-axis.

[0049] Optionally, such as Figure 1 As shown, both the left clamp and the right clamp further include a support plate 76, which is connected to the lower end of the clamping plate 71 and is used to support the sleeper.

[0050] In this embodiment, by setting a support plate 76 below the clamping plate 71, with the support plate 76 located on the side of the clamping plate 71 facing the center of the frame 1, when hoisting the sleeper, the clamping plates 71 on both sides clamp the sleeper, and the support plate 76 is located below the sleeper, providing support for the sleeper and making the clamping plate 71 clamp the sleeper more stably.

[0051] Optionally, such as Figure 1 As shown, the sleeper hoisting fixture also includes limiting plates 8, and multiple limiting plates 8 are respectively connected to the front and rear ends of the frame 1 and extend downwards from the frame 1.

[0052] In this embodiment, by setting limiting plates 8 at both ends of the frame 1 along the Y-axis direction, and extending the limiting plates 8 in the negative Z-axis direction, the limiting plates 8 can be inserted between two adjacent sleepers during hoisting, preventing the situation where the clamping plates 71 cannot fully clamp the sleepers.

[0053] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A sleeper hoisting clamp, characterized in that, The system includes a frame (1), a left clamp, a right clamp, a connecting cylinder (21), a fixed pulley block, a reversing pulley (5), a first wire rope (61), and a second wire rope (62). The frame (1) is a cuboid structure. The left and right clamps are movably mounted on the frame (1) and are respectively located on the left and right sides of the frame (1). The left and right clamps are used to clamp the sleepers. Both the left and right clamps include a moving rod (73). The connecting cylinder (21) is vertically installed at the center of the frame (1). Inside the connecting cylinder, from top to bottom, are a lifting pulley (24) and an unloaded pulley (252) that can move vertically relative to the connecting cylinder. The lifting pulley (24) and the unloaded pulley (252) are detachably connected. The lifting pulley (24) is used for upward lifting. Fixed pulley groups are provided on both the left and right sides of the connecting cylinder (21). Each fixed pulley group includes a first fixed pulley (41) and a second fixed pulley (42) arranged side-by-side in the front-back direction. The two reversing pulleys (5) are respectively connected to the left and right sides of the frame (1). Located between the left and right sides of the frame (1) and the two movable rods (73) on the left and right sides of the frame (1), respectively, the connecting cylinder (21) has first through slots on both the left and right sides for the first wire rope (61) and the second wire rope (62) to pass through. One end of the first wire rope (61) is connected to the movable rod (73) on the left side, and then passes through the first fixed pulley (41) on the left side, the lifting pulley (24), and the first fixed pulley (41) on the right side in sequence, and is connected to the movable rod (73) on the right side. 3) One end of the second wire rope (62) is connected to the moving rod (73) on the left side, and then passes through the reversing pulley (5) on the left side, the second fixed pulley (42) on the left side, the unloaded pulley (252), the second fixed pulley (42) on the right side, and the reversing pulley (5) on the right side in sequence, and is connected to the moving rod (73) on the right side. The length of the first wire rope (61) is greater than the length of the second wire rope (62). When the second wire rope (62) is taut, the first wire rope (61) is slack. The connecting cylinder (21) is also provided with a hanger (22), an automatic rotating mechanism, and an unloaded pulley seat (251). The hanger (22) is used for hoisting and is installed at the upper end of the connecting cylinder (21). Two lifting pulleys (24) are connected below the hanger (22). The two lifting pulleys (24) are arranged along the left and right direction of the frame (1). The automatic rotating mechanism is connected below the lifting pulleys (24). The unloaded pulley seat (251) is provided below the automatic rotating mechanism. The unloaded pulley seat (251) is detachably connected to the automatic rotating mechanism. The unloaded pulley (252) is connected below the unloaded pulley seat (251).

2. The sleeper hoisting clamp according to claim 1, characterized in that, Two first connecting plates (26) are connected below the hanger (22) along the front and rear sides of the frame (1), two lifting pulleys (24) are connected between the two first connecting plates (26), and the automatic rotating mechanism is connected below the first connecting plates (26).

3. The sleeper hoisting clamp according to claim 2, characterized in that, The automatic rotating mechanism includes an outer cylinder (231), a first corrugated block (232), a second corrugated block (233), a rotating column (234), a limiting block (235), an extension rod (236), and a rotating block (237). The outer cylinder (231) is connected below the first connecting plate (26). The first corrugated block (232) and the second corrugated block (233) are respectively disposed on the upper and lower sides inside the outer cylinder (231). The lower end of the first corrugated block (232) and the upper end of the second corrugated block (233) are evenly distributed with four corrugations around the axis of the outer cylinder (231). The corrugations at the lower end of the first corrugated block (232) and the corrugations at the upper end of the second corrugated block (233) are arranged alternately. The first corrugated block (232) and the second corrugated block (233) are arranged alternately. The lower surface of the outer cylinder (231) is provided with a third connecting hole in the vertical direction. The rotating column (234) passes through the third connecting hole and is used to slide up and down relative to the outer cylinder (231). The limiting block (235) is provided on the peripheral surface of the rotating column (234) and is used to be embedded in the corrugations of the first corrugated block (232) or the second corrugated block (233). The extension rod (236) is connected below the rotating column (234) and extends in the vertical direction. The rotating block (237) is connected below the extension rod (236) and is set perpendicular to the extension rod (236). The unloaded pulley seat (251) is a hollow seat structure. The upper surface of the hollow seat is provided with a connecting groove (253) for the rotating block (237) to pass through.

4. The sleeper hoisting clamp according to claim 3, characterized in that, It also includes a heavy-duty pin (28). The front and rear ends of the connecting cylinder (21) are provided with a second through groove (211) and a third through groove (212) from top to bottom. A second connecting plate (27) is connected above the outer cylinder (231). The second connecting plate (27) and the first connecting plate (26) are provided with shaft holes for the heavy-duty pin (28) to pass through. The heavy-duty pin (28) extends in the front-rear direction and passes through the second through groove (211). The heavy-duty pin (28) is used to move in the second through groove (211). The unloaded pulley seat (251) is provided with an unloaded pin (29) extending in the front-rear direction. The unloaded pin (29) passes through the third through groove (212) and is used to move in the third through groove (212).

5. The sleeper hoisting clamp according to claim 1, characterized in that, It also includes a first connecting rod (31), two first connecting rods (31) are respectively connected to the left and right sides of the lower end of the frame (1), the first connecting rods (31) are arranged parallel to the moving rods (73), the two first connecting rods (31) are respectively located between the left and right moving rods (73) and the left and right ends of the frame (1), and the two reversing pulleys (5) are respectively connected to the two first connecting rods (31).

6. The sleeper hoisting clamp according to claim 5, characterized in that, It also includes a fixed rod (75), and the movable rod (73) has a first connecting hole (74) in the left and right direction. The fixed rod (75) is mounted on the first connecting hole (74). One end of the second steel wire rope (62) is connected to the fixed rod (75) on the left and passes through the first connecting hole (74) on the left. Then it passes around the reversing pulley (5) on the left, the second fixed pulley (42) on the left, the unloaded pulley (252), the second fixed pulley (42) on the right, and the reversing pulley (5) on the right in sequence, and passes through the first connecting hole (74) on the right and is connected to the fixed rod (75) near the right.

7. The sleeper hoisting clamp according to claim 1, characterized in that, Both the left clamp and the right clamp include a clamping plate (71) and a sliding rod (72). The left and right side frames of the frame (1) are provided with through holes. The sliding rod (72) passes through the through holes. The end of the sliding rod (72) outside the frame (1) is perpendicularly connected to the clamping plate (71). The end of the sliding rod (72) inside the frame (1) is perpendicularly connected to the moving rod (73). The two clamping plates (71) are used to clamp the two ends of the sleeper.

8. The sleeper hoisting clamp according to claim 7, characterized in that, Both the left clamp and the right clamp further include a support plate (76), which is connected to the lower end of the clamp (71) and is used to support the sleeper.

9. The sleeper hoisting clamp according to claim 1, characterized in that, It also includes limiting plates (8), a plurality of the limiting plates (8) being connected to the front and rear ends of the frame (1) respectively and extending downward toward the frame (1).

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