Steel trestle hoisting device

Abstract

The utility model belongs to the technical field of steel trestle construction equipment, and provides a steel trestle hoisting device which comprises an outer frame, a plurality of hoisting ropes are arranged at the top of the outer frame, and a working cavity is formed in the outer frame; the reel shell is fixedly connected to the center of the bottom of the working cavity, two sets of reels are rotationally connected into the reel shell, steel cables are wound around the reels, the winding directions of the two sets of steel cables on the two sets of reels are opposite, rotation driving parts are arranged at one ends of the two sets of reels correspondingly, and the two sets of rotation driving parts are located on the same side of the reel shell; a linkage assembly is arranged between the two groups of rotation driving parts; and the two sets of pulleys are arranged on the two sides of the reel shell correspondingly, a distance adjusting assembly is arranged between the two sets of pulleys and the outer frame, and the free end of the steel cable on one reel bypasses the pulley on the same side and is fixedly connected with a lifting hook. Under the condition that a single crane is used for operation, the inclination angle of the hoisted trestle assembly can be accurately adjusted.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel trestle construction equipment, in particular to a steel trestle hoisting device. Background Art

[0002] With the development of my country's bridge-building technology, steel trestles have been laid in many places, which greatly facilitates people's travel. When a steel trestle is being constructed, the various components that make up the steel trestle need to be lifted to the designated position, and then the steel trestle is fixed and installed.

[0003] Steel trestle installation requires high precision and needs to be completed in one go. After being in place, it is usually tilted at a certain angle. Generally, the double crane lifting method is used for construction. However, sometimes the work site is small and cannot provide enough space for two cranes to stand, or due to crane resource limitations or cost considerations, more and more single cranes are used for overall lifting. When a single crane is operating, how to accurately adjust the tilt angle of the trestle so that it can be accurately installed in place has become an important part of the entire lifting operation. Utility Model Content

[0004] The utility model aims to provide a steel trestle hoisting device to solve the above problems and achieve the purpose of accurately adjusting the inclination angle of the hoisted trestle assembly when a single crane is used for operation.

[0005] To achieve the above purpose, the utility model provides the following solution: a steel trestle hoisting device, comprising:

[0006] An outer frame, a plurality of lifting ropes are arranged on the top of the outer frame, and a working chamber is arranged inside the outer frame;

[0007] A reel housing, the reel housing is fixedly connected to the bottom center of the working chamber, two groups of reels are rotatably connected in the reel housing, steel cables are wound around the reels, the two groups of steel cables are wound around the two groups of reels in opposite directions, one end of the two groups of reels is respectively provided with a rotation drive part, the two groups of rotation drive parts are located on the same side of the reel housing, and a linkage assembly is provided between the two groups of rotation drive parts;

[0008] Two groups of pulleys are respectively arranged on both sides of the reel shell, and a spacing adjustment component is arranged between the two groups of pulleys and the outer frame. The free end of the steel cable on one reel passes around the pulley on the same side and is fixedly connected with a hook, and the hook is located at the bottom of the outer frame.

[0009] Preferably, the rotation drive unit includes a reducer and a second motor, the output shaft of the reducer is transmission-connected to the rotating shaft of the reel through a connecting rod, the output shaft of the second motor is transmission-connected to the input shaft of the reducer, and the linkage assembly is arranged between the connecting rod and the reel housing.

[0010] Preferably, the linkage assembly includes a smooth rod fixedly connected to the reel shell, the smooth rod is located in the middle of the two groups of reels and is arranged parallel to the two groups of reels, an intermediate gear is slidably connected to the smooth rod, gears are coaxially fixedly sleeved on the two groups of connecting rods, the intermediate gear is arranged corresponding to the two groups of gears, and a sliding drive member is arranged between the intermediate gear and the reel shell.

[0011] Preferably, the sliding drive member includes a hydraulic cylinder fixedly connected to the reel housing, the hydraulic cylinder is arranged parallel to the smooth rod, the telescopic end of the hydraulic cylinder is fixedly connected to a shift fork, the intermediate gear is coaxially fixedly connected to a groove ring on one side close to the hydraulic cylinder, and the shift fork is slidably connected in the groove ring.

[0012] Preferably, the spacing adjustment assembly includes a sliding rod fixedly connected to the bottom of the outer frame and a bidirectional screw rod rotatably connected to the bottom of the outer frame, the sliding rod and the bidirectional screw rod are respectively arranged perpendicular to the reel, both ends of the sliding rod are respectively slidably connected to sliding seats, the bidirectional screw rod is transmission-connected to two groups of sliding seats, the pulley is rotatably connected to the sliding seat, and an adjustment drive member is arranged between the bidirectional screw rod and the reel housing.

[0013] Preferably, the adjusting drive member includes a worm gear fixedly sleeved in the middle of the bidirectional screw and a first motor fixedly connected to the outer frame, a worm gear is fixedly sleeved on the output shaft of the first motor, and the worm gear is drivingly connected to the worm gear.

[0014] Compared with the prior art, the utility model has the following advantages and technical effects: the main function of the rotation drive part is to drive the reel to rotate; the main function of the linkage assembly is to enable the two groups of reels to rotate synchronously with the same rotation direction, and cooperate with the winding method of the two steel cables on the two reels to facilitate the precise adjustment of the angle of the steel trestle; the main function of the spacing adjustment assembly is to adjust the spacing between the two pulleys, thereby changing the distance between the two hooks, so as to adapt to the hoisting requirements of steel trestles of various sizes. Overall, the utility model is suitable for single crane operation, which reduces the requirements for the site during the construction process, and can accurately adjust the inclination angle of the hoisted trestle assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the lifting device of the utility model;

[0017] Figure 2 Another schematic diagram of the lifting device of the utility model;

[0018] Figure 3 for Figure 2 A partial enlarged view in FIG.

[0019] Figure 4 for Figure 2 A partial enlarged view of B in FIG.

[0020] Figure 5 It is a top view of the rotary drive unit and linkage assembly of the utility model;

[0021] Figure 6 This is a bottom view of the spacing adjustment assembly of the utility model;

[0022] Among them, 1. outer frame; 2. lifting rope; 3. reel housing; 4. reel; 5. steel cable; 6. pulley; 7. sliding seat; 8. bidirectional screw; 9. worm gear; 10. worm; 11. first motor; 12. gear; 13. intermediate gear; 14. hydraulic cylinder; 15. reducer; 16. second motor; 17. smooth rod; 18. connecting rod; 19. fork; 20. sliding rod; 21. groove ring; 22. hook. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] Reference Figure 1-Figure 6 The utility model provides a steel trestle hoisting device, comprising:

[0026] An outer frame 1, a plurality of lifting ropes 2 are arranged on the top of the outer frame 1, and a working chamber is arranged inside the outer frame 1;

[0027] The reel housing 3 is fixedly connected to the bottom center of the working chamber. Two groups of reels 4 are rotatably connected in the reel housing 3. Steel cables 5 are wound around the reels 4. The two groups of steel cables 5 are wound around the two groups of reels 4 in opposite directions. One end of the two groups of reels 4 is respectively provided with a rotation driving part. The two groups of rotation driving parts are located on the same side of the reel housing 3, and a linkage assembly is provided between the two groups of rotation driving parts.

[0028] Two sets of pulleys 6 are respectively arranged on both sides of the reel shell 3, and a spacing adjustment component is arranged between the two sets of pulleys 6 and the outer frame 1. The free end of the steel cable 5 on a reel 4 passes around the pulley 6 on the same side and is fixedly connected with a hook 22, which is located at the bottom of the outer frame 1.

[0029] The main function of the lifting rope 2 is to facilitate the crane to lift the outer frame 1; the main function of the reel 4 is to retract and release the steel cable 5; the main function of the rotation drive part is to drive the reel 4 to rotate; the main function of the linkage assembly is to enable the two groups of reels 4 to rotate synchronously with the same rotation direction, and to cooperate with the winding method of the two steel cables 5 on the two reels 4 to facilitate the accurate adjustment of the angle of the steel trestle; the main function of the spacing adjustment assembly is to adjust the spacing between the two pulleys 6, and then change the distance between the two hooks 22, so as to adapt to the lifting requirements of steel trestles of various sizes. On the whole, the utility model is suitable for the situation of single crane operation, which reduces the requirements for the site during the construction process, and can accurately adjust the inclination angle of the hoisted trestle assembly.

[0030] According to a further optimized solution, the rotation driving part includes a reducer 15 and a second motor 16, the output shaft of the reducer 15 is connected to the rotating shaft of the reel 4 through a connecting rod 18, the output shaft of the second motor 16 is connected to the input shaft of the reducer 15, and the linkage assembly is arranged between the connecting rod and the reel housing 3.

[0031] like Figure 3 and Figure 5 As shown, the second motor 16 rotates to drive the reducer 15 to operate. When the reducer 15 operates, the torque of the second motor 16 is amplified and the reel 4 is driven to rotate. The rotation direction of the reel 4 is changed by controlling the rotation direction of the second motor 16, thereby realizing the retraction and release of the steel cable 5.

[0032] A further optimized solution is that the linkage assembly includes a smooth rod 17 fixedly connected to the reel housing 3, the smooth rod 17 is located in the middle of the two groups of reels 4 and is arranged parallel to the two groups of reels 4, an intermediate gear 13 is slidably connected to the smooth rod 17, and gears 12 are coaxially fixedly sleeved on the two groups of connecting rods 18, the intermediate gear 13 is arranged corresponding to the two groups of gears 12, and a sliding drive member is arranged between the intermediate gear 13 and the reel housing 3.

[0033] like Figure 1 , Figure 3 and Figure 5 As shown, before the hook 22 loads the steel trestle, the intermediate gear 13 can be driven by the sliding drive member to slide along the smooth rod 17 in the direction away from the gear 12, so that the intermediate gear 13 is disengaged from the two gears 12. At this time, the two sets of second motors 16 can respectively control the rotation of the two sets of reels 4. The reels 4 adjust the height of the corresponding hook 22 by retracting and releasing the steel cable 5, so as to lift the steel trestle according to the construction requirements, so that the angle of the steel trestle during lifting and the distance between the steel trestle and the outer frame 1 meet the subsequent construction needs.

[0034] After the crane lifts the steel trestle by pulling the outer frame 1, the intermediate gear 13 can be driven to mesh with the two gears 12 through the sliding drive member. At this time, the two gears 12 can rotate synchronously in the same direction, thereby making the reels 4 rotate synchronously in the same direction. When the angle of the steel trestle needs to be adjusted, the two sets of second motors 16 rotate to drive the two sets of reels 4 to rotate in the same direction. Since the winding directions of the two sets of steel cables 5 on the two sets of reels 4 are opposite, when the two reels 4 rotate in the same direction, one reel 4 retracts the steel cables 5 and the other reel 4 releases the steel cables 5, so that the two hooks 22 can move up and down, thereby driving the two ends of the steel trestle to move up and down, thereby achieving angle adjustment.

[0035] When the steel trestle rotates, the mass of the descending end will pull the corresponding hook 22 downward. Since the two reels 4 are linked, this pulling force will be converted into power to pull the other hook 22 upward. The mass of the descending end will become the power of the angle adjustment process, reducing the load of the second motor 16 and improving the accuracy of the angle adjustment process.

[0036] A further optimized solution is that the sliding drive component includes a hydraulic cylinder 14 fixedly connected to the reel housing 3, the hydraulic cylinder 14 is arranged parallel to the smooth rod 17, the telescopic end of the hydraulic cylinder 14 is fixedly connected with a fork 19, and the middle gear 13 is coaxially fixedly connected with a groove ring 21 on one side close to the hydraulic cylinder 14, and the fork 19 is slidably connected in the groove ring 21.

[0037] like Figure 3 and Figure 5 As shown, when the middle gear 13 needs to mesh with the two gears 12, the telescopic end of the hydraulic cylinder 14 can be controlled to extend, and when the telescopic end extends, the fork 19 pushes the groove ring 21, and the middle gear 13 is driven to move along the smooth rod 17 toward the gear 12 through the groove ring 21 until it meshes with the gear 12. When the meshing between the middle gear 13 and the gear 12 needs to be disconnected, the telescopic end of the hydraulic cylinder 14 can be controlled to retract.

[0038] A further optimized solution is that the spacing adjustment component includes a sliding rod 20 fixedly connected to the bottom of the outer frame 1 and a bidirectional screw rod 8 rotatably connected to the bottom of the outer frame 1. The sliding rod 20 and the bidirectional screw rod 8 are respectively vertically arranged on the reel 4, and the two ends of the sliding rod 20 are respectively slidably connected to the sliding seats 7. The bidirectional screw rod 8 is transmission-connected to the two groups of sliding seats 7, the pulley 6 is rotatably connected to the sliding seat 7, and an adjustment drive member is arranged between the bidirectional screw rod 8 and the reel housing 3.

[0039] According to a further optimized solution, the adjusting drive member includes a worm gear 9 fixedly sleeved in the middle of the bidirectional lead screw 8 and a first motor 11 fixedly connected to the outer frame 1. A worm 10 is fixedly sleeved on the output shaft of the first motor 11, and the worm 10 is transmission-connected to the worm gear 9.

[0040] like Figure 4 and Figure 6 As shown, when the distance between the two hooks 22 needs to be increased, the first motor 11 can be controlled to rotate, the first motor 11 rotates through the worm 10 to drive the worm wheel 9 to rotate, the worm wheel 9 drives the bidirectional screw 8 to rotate, and the two sliding seats 7 move to both sides of the outer frame 1 under the thread drive of the bidirectional screw 8, so that the distance between the two pulleys 6 is increased, and then the spacing between the two hooks 22 is increased. Similarly, when the distance between the two hooks 22 needs to be reduced, the first motor 11 can be controlled to rotate in the opposite direction.

[0041] The working process of this embodiment is as follows: the outer frame 1 is connected to the hook of the crane through the lifting rope 2. After the outer frame 1 is lifted to the working area, the first motor 11 is controlled to adjust the distance between the two hooks 22. After that, the intermediate gear 13 is disengaged from the gear 12 through the hydraulic cylinder 14, and the height of the hook 22 is adjusted by respectively controlling the two sets of second motors 16, and the hook 22 is connected to the steel trestle. After the connection is completed, the crane hoists the steel trestle to the connection area to connect the bridge. When the angle of the steel trestle needs to be adjusted, the intermediate gear 13 can be meshed with the gear 12 through the hydraulic cylinder 14, and the second motor 16 can be controlled to operate, so that the two reels 4 rotate synchronously, so that the two hooks 22 move up and down according to the required angle, so as to achieve the angle adjustment of the steel trestle.

[0042] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A steel trestle hoisting device, characterized in that: include: An outer frame (1), a plurality of lifting ropes (2) are arranged on the top of the outer frame (1), and a working chamber is arranged inside the outer frame (1); A reel housing (3), the reel housing (3) being fixedly connected to the bottom center of the working chamber, two groups of reels (4) being rotatably connected in the reel housing (3), steel cables (5) being wound around the reels (4), the two groups of steel cables (5) being wound around the two groups of reels (4) in opposite directions, one end of the two groups of reels (4) being respectively provided with a rotation drive unit, the two groups of rotation drive units being located on the same side of the reel housing (3), and a linkage assembly being provided between the two groups of rotation drive units; Two groups of pulleys (6), the two groups of pulleys (6) are respectively arranged on both sides of the reel housing (3), and a spacing adjustment component is arranged between the two groups of pulleys (6) and the outer frame (1). The free end of the steel cable (5) on one of the reels (4) passes over the pulleys (6) on the same side and is fixedly connected with a hook (22), and the hook (22) is located at the bottom of the outer frame (1).

2. A steel trestle hoisting device according to claim 1, characterized in that: The rotation driving part comprises a reducer (15) and a second motor (16); the output shaft of the reducer (15) is transmission-connected to the rotating shaft of the reel (4) via a connecting rod (18); the output shaft of the second motor (16) is transmission-connected to the input shaft of the reducer (15); and the linkage assembly is arranged between the connecting rod and the reel housing (3).

3. A steel trestle hoisting device according to claim 2, characterized in that: The linkage assembly comprises a smooth rod (17) fixedly connected to the reel housing (3), the smooth rod (17) being located between the two groups of reels (4) and arranged in parallel with the two groups of reels (4), an intermediate gear (13) being slidably connected to the smooth rod (17), gears (12) being coaxially fixedly sleeved on the two groups of connecting rods (18), the intermediate gear (13) being arranged correspondingly to the two groups of gears (12), and a sliding drive member being arranged between the intermediate gear (13) and the reel housing (3).

4. A steel trestle hoisting device according to claim 3, characterized in that: The sliding drive member comprises a hydraulic cylinder (14) fixedly connected to the reel housing (3), the hydraulic cylinder (14) being arranged in parallel with the smooth rod (17), a shift fork (19) being fixedly connected to the telescopic end of the hydraulic cylinder (14), a groove ring (21) being coaxially fixedly connected to a side of the intermediate gear (13) close to the hydraulic cylinder (14), and the shift fork (19) being slidably connected in the groove ring (21).

5. The steel trestle hoisting device according to claim 1, characterized in that: The spacing adjustment component comprises a sliding rod (20) fixedly connected to the bottom of the outer frame (1) and a bidirectional screw rod (8) rotatably connected to the bottom of the outer frame (1); the sliding rod (20) and the bidirectional screw rod (8) are respectively arranged vertically with the reel (4); the two ends of the sliding rod (20) are respectively slidably connected to sliding seats (7); the bidirectional screw rod (8) is transmission-connected to two groups of sliding seats (7); the pulley (6) is rotatably connected to the sliding seat (7); and an adjustment drive member is arranged between the bidirectional screw rod (8) and the reel housing (3).

6. A steel trestle hoisting device according to claim 5, characterized in that: The adjusting drive member comprises a worm wheel (9) fixedly sleeved in the middle of the bidirectional screw (8) and a first motor (11) fixedly connected to the outer frame (1); a worm (10) is fixedly sleeved on the output shaft of the first motor (11); and the worm (10) is drivingly connected to the worm wheel (9).

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