A hoist capable of intelligently and automatically adjusting the inclination angle of a hoisted segment

Abstract

This invention discloses an intelligent automatic lifting device for adjusting the tilt angle of pipe segments, including a fixing clamp, a lifting ring bracket, etc. The fixing clamp clamps and fixes the pipe segments for lifting. Then, the driving device, threaded rod, lifting ring, etc. are used to adjust the tilt angle of the pipe segments in the front-to-back direction, and the sliding rail, counterweight, second drive motor, etc. are used to adjust the tilt angle of the pipe segments in the left-to-right direction. This solves the problem that when non-standard pipe segments are assembled and inspected in a horizontal three-ring configuration, it is necessary to rely on manual assistance and forklifts to adjust the center of gravity of the pipe segments before assembly. It can be adapted to various non-standard pipe segments with uncertain center of gravity and irregular shape, and avoids damage to the pipe segments due to insufficient verticality during assembly. It can improve the efficiency of horizontal three-ring assembly inspection of pipe segments.

Description

Technical Field

[0001] This invention relates to the field of tunnel segment hoisting equipment technology, specifically to an intelligent, automatically adjustable hoisting device for tunnel segments. Background Technology

[0002] According to current design and specification requirements for reinforced concrete tunnel segments, finished tunnel segments need to undergo horizontal three-ring assembly and other inspections. The three-ring assembly inspection of tunnel segments is quite difficult to perform because it requires assembling multiple tunnel segments rather than inspecting a single segment. This is especially true for non-standard tunnel segments with uncertain center of gravity or those whose center of gravity is deviated due to unbalanced internal reinforced concrete distribution during manufacturing. In such cases, manual labor and forklifts are required to complete the assembly. During the assembly process, damage to the tunnel segments due to collisions is inevitable, and the assembly efficiency is low. Although special lifting tools can be made for non-standard tunnel segments according to their shape, the diversity of shapes of non-standard tunnel segments leads to high manufacturing costs for lifting tools.

[0003] Some existing segment lifting tools do not solve the above problems. For example, a three-ring spreader type lifting tool (publication number: CN210763947U, publication date: 2020-06-16) discloses a three-ring spreader type lifting tool, including a body and segments. The segments are provided with an outer wall and an inner wall. The outer wall of the segment protrudes outward and the inner wall of the segment is recessed inward. The body is provided with an adjustment part, an installation part and a lifting part. The adjustment part is provided with an arc-shaped cut that penetrates the body. The curvature of the arc-shaped cut matches the curvature of the inner wall of the segment.

[0004] The aforementioned three-ring spreader-type lifting device uses a structure that matches the curvature of the side of the tunnel segment to ensure that the center of gravity of the lifting device and the tunnel segment are on the same vertical line. This balances the center of gravity of the lifting device and the tunnel segment during lifting. However, when lifting non-standard tunnel segments with uncertain center of gravity or those whose center of gravity is not balanced due to uneven distribution of internal reinforced concrete during manufacturing, the center of gravity of the three-ring spreader-type lifting device is difficult to match with that of the non-standard tunnel segment. This will still cause the non-standard tunnel segment to tilt during lifting, so there is still room for improvement. Summary of the Invention

[0005] To address the technical deficiencies in the background technology, this invention proposes an intelligent, automatically adjustable lifting device for tunnel segments, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows:

[0006] A smart, automatically adjustable lifting device for tunnel segments includes a fixed clamp, a lifting ring bracket at the top of the fixed clamp, a threaded rod extending from front to back passing through the lifting ring bracket, a driving device at one end of the threaded rod, the driving device being fixedly connected to the lifting ring bracket, a lifting ring fitted on the radial surface of the threaded rod, the lifting ring having a threaded hole that engages with the threaded rod, a verticality sensor at the top of the fixed clamp, and a slide rail extending from left to right at the bottom of the fixed clamp, with a counterweight mounted on the top of the slide rail.

[0007] As a further technical solution of the present invention, a bearing is provided between the threaded rod and the lifting ring bracket.

[0008] As a further technical solution of the present invention, the driving device consists of a motor reducer and a first drive motor, and the output end of the motor reducer is fixedly connected to the threaded rod.

[0009] As a further technical solution of the present invention, the fixing clamp is composed of a first horizontal frame at the top and a first vertical frame and a second vertical frame at the front and rear ends of the first horizontal frame. The second vertical frame is provided with a second horizontal frame at the bottom and the second horizontal frame extends to the left and right with the second vertical frame as the center.

[0010] As a further technical solution of the present invention, a buffer pad is provided at the bottom of the first horizontal frame, and the buffer pad is located between the first vertical frame and the second vertical frame.

[0011] As a further technical solution of the present invention, a plurality of first fixing screws are provided on the surface of the first vertical frame, each of the first fixing screws passing through from the front of the first vertical frame to the space between the first vertical frame and the second vertical frame, and each of the first fixing screws has a first fixing block at its threaded end.

[0012] As a further technical solution of the present invention, the second vertical frame is provided with a second fixing block on the surface opposite to the first vertical frame.

[0013] As a further technical solution of the present invention, the second crossbar is provided with a third fixing block at both the left and right ends, and a second fixing screw is provided through each of the third fixing blocks, with each second fixing screw passing from the back of the third fixing block to the front.

[0014] As a further technical solution of the present invention, the slide rail is provided on the back of the second crossbeam, the top surface of the slide rail is provided with a rack groove, the rack groove abuts against a drive gear meshing with the rack groove, the shaft of the drive gear is connected to a second drive motor by a shaft rod, and the second drive motor is fixedly connected to the counterweight.

[0015] The beneficial effects of this invention are as follows:

[0016] This invention uses a fixing clamp to hold and fix the pipe segments and then hoist them. Subsequently, the tilt angle of the pipe segments in the front-to-back direction is adjusted by the cooperation of the drive device, threaded rod, and lifting ring, and the tilt angle in the left-to-right direction is adjusted by the cooperation of the slide rail and the counterweight. This solves the problem that when non-standard pipe segments are assembled and inspected in a horizontal three-ring configuration, it is necessary to rely on auxiliary manual labor and push-pull equipment such as forklifts to adjust the center of gravity of the pipe segments before assembly can be completed. It can be adapted to various non-standard pipe segments with uncertain center of gravity and irregular shape, and avoids the pipe segments from being not vertical enough during assembly, thus avoiding damage caused by collision. It can improve the efficiency of horizontal three-ring assembly inspection of pipe segments. Attached Figure Description

[0017] Figure 1 This is a structural diagram of a lifting device that automatically adjusts the tilt angle of pipe segments.

[0018] Figure 2 This is a left view of a lifting device that automatically adjusts the tilt angle of pipe segments.

[0019] Figure 3 This is a front view of a threaded rod of a lifting device that automatically adjusts the tilt angle of pipe segments during installation.

[0020] Figure 4 This is a schematic diagram of the structure on the back of the second crossbar of a lifting device that is an intelligent, automatically adjustable lifting tool for tunnel segments.

[0021] Figure 5 This is a structural diagram of a counterweight block for a lifting device that automatically adjusts the tilt angle of pipe segments.

[0022] The components include: a fixed clamp 1, a slide rail 11, a rack groove 111, a first horizontal frame 12, a buffer pad 121, a first vertical frame 13, a first fixing screw 131, a first fixing block 132, a second vertical frame 14, a second fixing block 141, a second horizontal frame 15, a third fixing block 151, a second fixing screw 152, a lifting ring bracket 2, a threaded rod 3, a bearing 31, a drive device 4, a motor reducer 41, a first drive motor 42, a lifting ring 5, a threaded hole 51, a verticality sensor 6, a counterweight 7, a second drive motor 8, and a drive gear 81. Detailed Implementation

[0023] The embodiments of the present invention will be described below with reference to the accompanying drawings and related examples. The embodiments of the present invention are not limited to the following examples, and the present invention relates to the relevant necessary components in this technical field, which should be regarded as well-known technology in this technical field and can be known and mastered by those skilled in this technical field.

[0024] like Figure 1 , 2Alternatively, 4, an intelligent automatic lifting device for adjusting the tilt angle of pipe segments includes a fixed clamp 1, a lifting ring bracket 2 at the top of the fixed clamp 1, a threaded rod 3 extending from front to back passing through the lifting ring bracket 2, a driving device 4 at one end of the threaded rod 3, the driving device 4 being fixedly connected to the lifting ring bracket 2, a lifting ring 5 sleeved on the radial surface of the threaded rod 3, the lifting ring 5 having a threaded hole 51 that engages with the threaded rod 3, a verticality sensor 6 at the top of the fixed clamp 1, and a slide rail 11 extending from left to right at the bottom of the fixed clamp 1, with a counterweight 7 mounted on the top of the slide rail 11.

[0025] The fixing clamp 1 of this invention is used to clamp and fix the pipe segment. The hook of an external hoisting equipment, such as a crane, is inserted into the lifting eye hole of the lifting eye 5. Then, the crane moves the lifting device to the pipe segment and fixes the fixing clamp 1 to the pipe segment. The crane then lifts the lifting device and the pipe segment. If the center of gravity of the pipe segment is not at its center, the pipe segment will tilt along with the lifting device after being lifted. The verticality sensor 6 can detect the angle of tilt between the pipe segment and the lifting device. Subsequently, an external servo system controls the drive device 4 to drive the threaded rod 3 to rotate. During the rotation of the threaded rod 3, it engages with the threaded hole 51, causing the pipe segment to... The lifting ring 5 moves along the threaded rod 3, thereby adjusting the center of gravity of the lifting device and the segment from the front-to-back direction to keep the lifting device and the segment perpendicular. If the lifting device and the segment are found to be tilted in the left-to-right direction, the counterweight block 7 can be pushed to slide along the slide rail 11 to adjust the center of gravity of the lifting device and the segment in the left-to-right direction to keep the lifting device and the segment perpendicular. This invention keeps the segment perpendicular by adjusting the center of gravity in four directions. The lifting device of this invention has a reliable structure and is easy to operate. Using the lifting device of this invention to perform three-ring assembly inspection of non-standard segments can complete the assembly without the need for auxiliary manual labor and push-pull equipment such as forklifts, thus improving the efficiency of three-ring assembly inspection of segments.

[0026] The method for fixing the fixing clamp 1 to the segment is as follows:

[0027] The lifting device is moved to the segment using a crane. The first vertical frame 13 is placed on the outer arc surface of the segment, the second vertical frame 14 is placed on the inner arc surface of the segment, and the buffer pad 121 at the bottom of the first horizontal frame 12 abuts against the axial top of the segment. The first fixing screw 131 is turned until the first fixing block 132 abuts against the outer arc surface of the segment. Then, the first fixing screw 131 is turned until the inner surface of the segment abuts against the second fixing block 141. Then, the second fixing screw 152 is turned into the threaded hole on the inner arc surface of the segment. Then, the first fixing screw 131 and the second fixing screw 152 are turned respectively to adjust the segment to be parallel to the fixing clamp 1. Finally, the first fixing screw 131 and the second fixing screw 152 are tightened to fix the segment to the lifting device.

[0028] like Figure 3 As one of the preferred embodiments of the present invention, a bearing 31 is provided between the threaded rod 3 and the lifting ring bracket 2.

[0029] The threaded rod 3 and the lifting ring bracket 2 have two contact points, which can provide a point of force when the crane lifts the lifting device, so that the lifting device can be lifted and moved smoothly. The bearing 31 can reduce the friction between the threaded rod 3 and the lifting ring bracket 2 when the drive device 4 drives the threaded rod 3 to rotate, and avoid the threaded rod 3 from being difficult to rotate or from wearing out due to long-term friction with the lifting ring bracket 2.

[0030] like Figure 1 As one of the preferred embodiments of the present invention, the driving device 4 is composed of a motor reducer 41 and a first drive motor 42, and the output end of the motor reducer 41 is fixedly connected to the threaded rod 3.

[0031] Currently, the weight of conventional tunnel segments is typically between 1 and 3 tons. When the fixing clamp 1 clamps and fixes the tunnel segment, the combined weight of the lifting device and the tunnel segment can reach 1.5 to 3.5 tons. The large combined weight of the lifting device and the tunnel segment will require a large torque when the drive device 4 drives the threaded rod 3 to rotate. If the first drive motor 42 directly drives the threaded rod 3 to rotate, the first drive motor 42 will be in a high-load working state for a long time, which will easily cause the first drive motor 42 to burn out. Therefore, the drive device 4 uses the motor reducer 41 combined with the first drive motor 42. The motor reducer 41 can increase the output torque of the first drive motor 42 by reducing the speed, thereby avoiding the first drive motor 42 being in a high-load working state for a long time and improving the service life of the first drive motor 42.

[0032] like Figure 1 Alternatively, in one of the preferred embodiments of the present invention, the fixing clamp 1 is composed of a first horizontal frame 12 at the top and a first vertical frame 13 and a second vertical frame 14 at the front and rear ends of the first horizontal frame 12. The bottom of the second vertical frame 14 is provided with a second horizontal frame 15, and the second horizontal frame 15 extends to the left and right with the second vertical frame 14 as the center.

[0033] The fixing clamp 1 of the present invention abuts against the top of the axial direction, the outer arc surface, the middle of the inner arc surface, and the left and right ends of the inner arc surface of the pipe segment through the first horizontal frame 12, the first vertical frame 13, the second vertical frame 14, and the second horizontal frame 15 respectively, so that the fixing clamp 1 and the pipe segment have at least four fixing points, thereby firmly fixing the pipe segment to the lifting device, avoiding safety accidents caused by the pipe segment falling off the lifting device due to shaking and loosening during the lifting process, and ensuring the safety of the three-ring assembly and inspection process of the pipe segment.

[0034] like Figure 1 Alternatively, as one of the preferred embodiments of the present invention, the bottom of the first horizontal frame 12 is provided with a buffer pad 121, which is located between the first vertical frame 13 and the second vertical frame 14.

[0035] The buffer pad 121 of the present invention is made of elastic materials such as rubber. When fixing the lifting device to the pipe segment, the lifting device is usually moved above the pipe segment by a crane. Then, the first vertical frame 13 and the second vertical frame 14 are slowly moved along the outer arc surface and inner arc surface of the pipe segment until the bottom of the first horizontal frame 12 abuts against the top of the pipe segment in the axial direction. The buffer pad 121 can buffer the impact generated when the bottom of the first horizontal frame 12 abuts against the top of the pipe segment in the axial direction, thereby avoiding damage to the pipe segment by the first horizontal frame 12. It can also prevent the first horizontal frame 12 from being subjected to long-term impact, which would cause the fixing clamp 1 to deform and fail to fix the pipe segment firmly.

[0036] like Figure 1 Alternatively, in one of the preferred embodiments of the present invention, a plurality of first fixing screws 131 are provided on the surface of the first vertical frame 13, each of the first fixing screws 131 passing through the front of the first vertical frame 13 to the space between the first vertical frame 13 and the second vertical frame 14, and each of the first fixing screws 131 has a first fixing block 132 at its threaded end.

[0037] The first vertical frame 13 of the present invention has a plurality of threaded holes on its surface that match the first fixing screws 131. When the crane moves the lifting device to the position of the tube segment, the first fixing block 132 is slowly moved to abut against the outer arc surface of the tube segment by turning the first fixing screws 131. Then, the first fixing screws 131 are turned to abut against the inner arc surface of the tube segment and the second fixing block 141. Finally, the tilt angle of the tube segment is adjusted by turning the plurality of the first fixing screws 131 so that the outer arc surface of the tube segment is parallel to the first vertical frame 13.

[0038] Furthermore, a pad made of elastic material such as rubber can be provided on the surface of the first fixing block 132. This pad can buffer the pressure when the first fixing block 132 comes into contact with the pipe segment, preventing the first fixing block 132 from deforming or damaging the surface of the pipe segment. In addition, the pad can increase the friction between the first fixing block 132 and the surface of the pipe segment, making the fixing clamp 1 more firmly fixed to the pipe segment. This avoids safety accidents caused by the pipe segment falling off the lifting device due to shaking and loosening during the hoisting process, and ensures the safety of the three-ring assembly and inspection process of the pipe segment.

[0039] like Figure 1 Alternatively, as one of the preferred embodiments of the present invention, the second vertical frame 14 is provided with a second fixing block 141 on the surface opposite to the first vertical frame 13.

[0040] The second fixing block 141 of the present invention is fixed to the surface of the second vertical frame 14 by welding or other methods. The height of the second fixing block 141 cannot be adjusted. Therefore, it is necessary to cooperate with the movable first fixing block 132 to clamp the inner and outer arc surfaces of the tube segment to fix the tube segment. Under normal circumstances, the first fixing block 132 and the two third fixing blocks 151 abut against the center of the outer arc surface and the radial ends of the inner arc surface of the tube segment, which is sufficient to fix the tube segment to the lifting device. However, if the operation is not done properly, the tube segment may be subjected to excessive pressure at the arc apex, resulting in deformation or cracking of the tube segment. Therefore, the cooperation of the second fixing block 141 and the first fixing block 132 can fix the tube segment more firmly and can prevent the tube segment from being deformed or even cracked.

[0041] Furthermore, a pad made of elastic material such as rubber can be provided on the surface of the second fixing block 141. This pad can buffer the pressure when the second fixing block 141 comes into contact with the pipe segment, preventing the second fixing block 141 from deforming or damaging the surface of the pipe segment. In addition, the pad can increase the friction between the second fixing block 141 and the surface of the pipe segment, making the fixing clamp 1 more firmly fixed to the pipe segment. This avoids safety accidents caused by the pipe segment falling off the lifting device due to shaking and loosening during the hoisting process, and ensures the safety of the three-ring assembly and inspection process of the pipe segment.

[0042] like Figure 1 , 2 Alternatively, in one of the preferred embodiments of the present invention, the second crossbar 15 is provided with a third fixing block 151 at both the left and right ends, and each of the third fixing blocks 151 is provided with a second fixing screw 152, and each of the second fixing screws 152 passes from the back of the third fixing block 151 to the front.

[0043] The surface of the third fixing block 151 of the present invention is provided with a plurality of threaded holes matching the second fixing screws 152. After the first fixing block 132 and the second fixing block 141 fix the tube segment, the second fixing screws 152 are turned into the threaded holes on the inner arc surface of the tube segment to fix the radial ends of the tube segment. This can further improve the firmness of the lifting device in fixing the tube segment and can prevent the tube segment and the lifting device from shaking during the lifting of the tube segment, thus eliminating the hidden danger of the tube segment and the lifting device loosening and falling.

[0044] Furthermore, a buffer block made of elastic material such as rubber can be provided at the threaded end of the second fixing screw 152. When the position of the second fixing screw 152 cannot match the threaded hole on the inner arc surface of the tube segment, the buffer block can abut against the radial ends of the inner arc surface of the tube segment and use the friction between the buffer block and the tube segment to clamp and fix the tube segment. This also has the effect of fixing the tube segment to prevent it from shaking and can improve the adaptability of the lifting device.

[0045] like Figure 4 Alternatively, in one of the preferred embodiments of the present invention, the slide rail 11 is disposed on the back of the second crossbeam 15, the top surface of the slide rail 11 is provided with a rack groove 111, the rack groove 111 abuts against a drive gear 81 meshing with the rack groove 111, the shaft of the drive gear 81 is connected to a second drive motor 8 by a shaft, and the second drive motor 8 is fixedly connected to the counterweight 7.

[0046] The counterweight 7 of the present invention has a groove matching the slide rail 11 at a position relative to the slide rail 11. The counterweight 7 is moved along the slide rail 11 to adjust the center of gravity in the left and right directions when the lifting device is hoisting the segment. The second drive motor 8 is fixedly connected to the counterweight 7. The second drive motor 8 drives the drive gear 81 to rotate and mesh with the rack groove 111 to move the counterweight 7 along the slide rail 11. When the verticality sensor 6 detects that the segment and the lifting device are tilted during segment hoisting, the external servo system will control the first drive motor 42 or the second drive motor 8 or both motors to work simultaneously according to the tilt angle, thereby adjusting the center of gravity of the segment and the lifting device, so that the segment is kept vertical. There is no need to use auxiliary manual labor and push and pull tools such as forklifts to avoid collisions during the segment assembly process, thus improving the efficiency of the horizontal three-ring assembly inspection of the segment.

[0047] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A kind of intelligent automatic adjustment hoist pipe piece inclination's lifting appliance, including fixed clamp (1), it is characterized in that: The top of the fixed clamp (1) is provided with a lifting ring bracket (2), and a threaded rod (3) extending from front to back is passed through the lifting ring bracket (2). One end of the threaded rod (3) is provided with a driving device (4), and the driving device (4) is fixedly connected to the lifting ring bracket (2). A lifting ring (5) is sleeved on the radial surface of the threaded rod (3). The lifting ring (5) is provided with a threaded hole (51) that engages with the threaded rod (3). The top of the fixed clamp (1) is also provided with a verticality sensor (6). The bottom of the fixed clamp (1) is provided with a slide rail (11) extending from left to right. A counterweight (7) is mounted on the top of the slide rail (11). The fixing clamp (1) consists of a first horizontal frame (12) at the top and a first vertical frame (13) and a second vertical frame (14) at the front and rear ends of the first horizontal frame (12). The second vertical frame (14) has a second horizontal frame (15) at the bottom and extends to the left and right with the second vertical frame (14) as the center. The surface of the first vertical frame (13) is provided with a plurality of first fixing screws (131). Each first fixing screw (131) passes from the front of the first vertical frame (13) to the space between the first vertical frame (13) and the second vertical frame (14). Each first fixing screw (131) has a first fixing block (132) at its threaded end. The second crossbar (15) is provided with a third fixing block (151) at both the left and right ends. Each of the third fixing blocks (151) is provided with a second fixing screw (152). Each of the second fixing screws (152) passes from the back of the third fixing block (151) to the front. The slide rail (11) is located on the back of the second crossbeam (15). The top surface of the slide rail (11) is provided with a rack groove (111). The rack groove (111) abuts against a drive gear (81) that meshes with the rack groove (111). The shaft of the drive gear (81) is connected to a second drive motor (8) by a shaft. The second drive motor (8) is fixedly connected to the counterweight (7).

2. The intelligent automatically adjusted hoist with a hanging segment with an angle of inclination according to claim 1, characterized in that: A bearing (31) is provided between the threaded rod (3) and the lifting ring bracket (2).

3. The intelligent automatically adjusting hoist for tilting angle of hoisted segment as claimed in claim 1, wherein: The drive device (4) consists of a motor reducer (41) and a first drive motor (42), and the output end of the motor reducer (41) is fixedly connected to the threaded rod (3).

4. The intelligent automatic adjustable lifting device for tunnel segment tilting according to claim 1, characterized in that: The first horizontal frame (12) has a buffer pad (121) at the bottom, and the buffer pad (121) is located between the first vertical frame (13) and the second vertical frame (14).

5. The intelligent automatic adjustable lifting device for tunnel segment tilting according to claim 1, characterized in that: The second vertical frame (14) has a second fixing block (141) on the surface opposite to the first vertical frame (13).

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