Shield tunnel segment lifting appliance

Abstract

The invention discloses a shield tunnel segment lifting appliance and relates to the field of tunnel segments, the shield tunnel segment lifting appliance comprises a cross rod and clamping arms, the clamping arms are symmetrically and slidably arranged on the outer wall of the cross rod, supporting rods are hinged to the tops of the clamping arms, second toothed bars are elastically and slidably arranged on the inner sides of the clamping arms, and meanwhile supporting plates are rotatably arranged in the clamping arms; limiting rods are symmetrically arranged at the bottom of the cross rod, limiting sleeves are symmetrically installed on the two sides of the limiting rods, and first toothed rods are installed on the positions, located at the same horizontal height as the limiting rods, of the inner sides of the clamping arms. When a clamping arm slides towards the inner side under the action of a supporting rod, one side of an extrusion plate makes contact with the two ends of a tunnel segment firstly, so that a supporting plate is turned over and makes contact with the inner wall of the tunnel segment, a first toothed rod can drive an acceleration gear assembly to rotate, and then the clamping arm is driven to rotate; in this way, the limiting block can move to the top of the tunnel segment and make contact with the tunnel segment in the clamping process.

Description

Technical Field

[0001] The invention relates to the field of tunnel segments, in particular to a shield tunnel segment hoist. Background Art

[0002] The shield tunnel segment is a prefabricated concrete slab used to support the tunnel wall during shield tunnel construction. When the shield machine is working underground, the segments will be spliced ​​together as it continues to advance, forming a sealed tunnel structure. Each segment is usually composed of multiple blocks, which are connected by bolts to ensure the stability and waterproof performance of the tunnel. Before using and installing it, a special hoist is required to hoist and transport the segments to the designated location.

[0003] Most of the existing tunnel segment hoists support the bottom of the segment through support rods, and then move it to the specified position under the action of a crane. In order to prevent the tunnel segment from shaking on the top of the support rod during the movement and transportation, the staff will also set a limiting mechanism on the outer wall of the support rod to clamp the tunnel segment. After moving to the specified position, the staff will need to manually disassemble the limiting mechanism. At the same time, due to the large gravity of the tunnel segment itself, the manual disassembly process is too cumbersome and prone to accidents.

[0004] In summary, the subsequent disassembly and assembly of the above-mentioned hoisting device in actual use wastes too much manpower and material resources and reduces the overall hoisting efficiency. At the same time, manual operation of the tunnel segments is prone to accidents. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a shield tunnel segment lifting device to solve the technical problems that subsequent disassembly and assembly waste too much manpower and material resources, reduce the overall lifting efficiency, and manual operation of the tunnel segments is prone to accidents.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a shield tunnel segment hoist, comprising a cross bar and a clamping arm, the outer wall of the cross bar is symmetrically slidably provided with a clamping arm, and a support rod is hinged at the top of the clamping arm, a second gear rod is elastically slidably provided on the inner side of the clamping arm, and a support plate cooperating with the second gear rod is rotatably provided in the clamping arm, a limit rod is symmetrically provided at the bottom of the cross bar, and limit sleeves are symmetrically installed on both sides of the limit rod; A first gear rod is installed on the inner side of the clamping arm at the same level as the limiting rod, and an acceleration gear assembly that cooperates with the first gear rod is rotatably arranged in the limiting sleeve, and a limiting block that cooperates with the acceleration gear assembly is connected to the bottom end of the limiting sleeve.

[0007] By adopting the above technical solution, when the clamping arm slides inwardly under the action of the support rod, one side of the extrusion plate will first contact the two ends of the tunnel segment, so that the support plate will flip over and contact the inner wall of the tunnel segment. During this process, no manual operation and support is required, which speeds up the overall lifting efficiency. The first gear rod will drive the acceleration gear assembly to rotate, and through the cooperation of the threaded rod and the threaded sleeve, it will drive the limit block to slide downward, thereby achieving that during the clamping process, the limit block will move to the top of the tunnel segment and contact it, and at the same time cooperate with the support rod at the bottom to complete the limiting work of the tunnel segment.

[0008] The present invention is further configured such that one end of the second gear rod is connected to an extrusion plate, and one side of the extrusion plate is detachably configured.

[0009] Preferably, during the process of the clamping arm sliding inward, the extrusion plate will first contact the two ends of the tunnel segment. During continued sliding, the extrusion plate will drive the second gear rod at one end to move to one side, and the detachable setting is convenient for the staff to regularly maintain and replace it.

[0010] The present invention is further configured such that an adjustment plate is connected to one side of the support plate, and residual gears cooperating with the second gear rod are installed on both sides of the adjustment plate.

[0011] Preferably, when the second gear rod slides to one side under the action of the extrusion plate, the tooth block on the second gear rod will mesh with the residual gear, thereby causing the residual gear to rotate at a certain angle and drive the adjustment plate to flip over. Since the adjustment plate and the support plate are interconnected, the support plate will also flip at a certain angle during this process.

[0012] The present invention is further configured such that the bottom of the clamping arm is telescopically connected to a universal wheel, and a self-locking connection is formed between the top of the universal wheel and the clamping arm.

[0013] Preferably, when the device is moved to the ground by hoisting equipment, the cross bar can be moved to the two ends of the tunnel segment through the action of the universal wheel. At the same time, the staff can also adjust the overall height of the universal wheel according to the tunnel segments of different sizes and thicknesses, so that when the support plate is subsequently flipped, its top can fully contact the inner wall of the tunnel segment. The self-locking setting ensures that when hoisting tunnel segments of different thicknesses, the overall height of the clamping arm can be adjusted without replacing the hoisting equipment, thereby improving the overall practicality of the device.

[0014] The present invention is further configured such that a threaded rod is connected to the bottom end of the acceleration gear assembly, and a threaded sleeve is sleeved on the outer wall of the threaded rod, and one end of the threaded sleeve passes through a limiting sleeve and is connected to a limiting block.

[0015] Preferably, during the rotation of the acceleration gear assembly, the threaded rod at the bottom end will be driven to rotate along with it, and through the cooperation of the threaded rod and the threaded sleeve, the threaded sleeve will be driven to slide downward, thereby making the limit block at the bottom end of the limit sleeve contact with the top of the tunnel segment.

[0016] The present invention is further configured such that the acceleration gear assembly includes a driving gear and a driven gear, a driving gear is meshed on one side of the first gear rod, and a driven gear matching with the driving gear is arranged on one side thereof, wherein the top end of the threaded rod is connected to the driven gear, and the diameter of the driving gear in the acceleration gear assembly is greater than the diameter of the driven gear.

[0017] Preferably, during the sliding of the first gear rod through the clamping arm, the driving gear will be driven to rotate, and the threaded rod will be driven to rotate by meshing with the driven gear. Since the diameter of the driving gear in the acceleration gear assembly is larger than the diameter of the driven gear, the driven gear will drive the threaded rod to rotate several times during the process of the driving gear rotating several circles, thereby ensuring that the limit block at the bottom can fully contact and limit the top of the tunnel segment.

[0018] The present invention is further configured such that the bottom end of the limit block and the top end of the support plate are both detachably provided with protective covers, and the bottom end of the protective cover itself is deformably provided.

[0019] Preferably, the protective cover itself is made of a flexible wear-resistant material in one piece. When facing the curved surface of the tunnel segment, it can ensure that the limit block and the support plate can re-contact and limit the tunnel segment, thereby improving the stability of the movement of the tunnel segment during the lifting process.

[0020] The present invention is further configured such that rollers are provided at both upper and lower ends of the cross bar on the inner side of the clamping arm, and the contact surfaces between the rollers and the cross bar are smooth.

[0021] Preferably, the sliding friction between the clamping arm and the cross bar is changed to roller friction through the setting of the roller, and the smooth setting further reduces the friction between the two, thereby ensuring that the clamping arm can be stably adjusted on the cross bar.

[0022] The present invention is further configured such that the tooth block on the outer wall of the first tooth rod is locally disposed.

[0023] Preferably, in the process of the clamping arm driving the first gear rod to slide to one side, the limit block at the bottom end of the limit sleeve can be quickly adjusted to facilitate its application to tunnel segments of different sizes and thicknesses, thereby improving the overall practicality of the device.

[0024] The present invention is further configured such that a guide mechanism is connected between the threaded sleeve and the limiting sleeve.

[0025] Preferably, the guide mechanism is provided to prevent the threaded sleeve from rotating along with the threaded rod, thereby ensuring that the threaded sleeve can slide in the vertical direction within the limiting sleeve during the rotation of the threaded rod.

[0026] In summary, the present invention mainly has the following beneficial effects: The present invention provides a clamping arm symmetrically slidably on the cross bar, moves the device to a designated position by a hoisting device, and then places it on the ground. Under the action of the support rod, the clamping arm is driven to slide to both sides of the cross bar, and at this time, the clamping arm is ensured to be at both ends of the tunnel segment to be hoisted. Then, the hoisting device lifts the support rod upward, and the clamping arm slides inward through the support rod, so as to realize automatic clamping of both ends of the tunnel segment, thereby saving a lot of manpower and material resources. The present invention provides a second gear rod elastically slidingly disposed on the inner side of the clamping arm. When the clamping arm slides inwardly under the action of the support rod, one side of the extrusion plate will first contact the two ends of the tunnel segment. During the continued sliding process, the second gear rod will be driven to move to one side, so that the support plate is turned over under the action of the residual gear and contacts the inner wall of the tunnel segment. In this process, no manual operation and support is required, which speeds up the overall hoisting efficiency and reduces the workload of the staff. The present invention provides limiting sleeves on both sides of the limiting rod, and one end of the first tooth rod passes through the limiting rod. When the clamping arm slides inward for clamping, the first tooth rod drives the acceleration gear assembly to rotate, and the limiting block is driven to slide downward through the cooperation of the threaded rod and the threaded sleeve. As a result, during the clamping process, the limiting block moves to the top of the tunnel segment and contacts with it, and at the same time cooperates with the support plate at the bottom to complete the limiting work of the tunnel segment, preventing the tunnel segment itself from shaking during the hoisting process, improving the overall stability of the hoisting, and effectively preventing the occurrence of accidents during the hoisting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A perspective view of the present invention; Figure 2 It is a front view of the present invention; Figure 3 It is a schematic diagram of the structure of the clamping arm of the present invention; Figure 4 For the present invention Figure 1 A magnified view of middle; Figure 5 A bottom-up stereogram of the present invention; Figure 6 It is a schematic diagram of the limit rod structure of the present invention; Figure 7 It is a schematic diagram of the pressing plate structure of the present invention; Figure 8 It is a schematic diagram of the support plate adjustment structure of the present invention; Fig. 9 For the present invention Figure 5 Enlarged view of B.

[0028] Description of reference numerals: 1. Crossbar; 2. Clamping arm; 3. Support rod; 4. Universal wheel; 5. First gear rod; 6. Limit rod; 7. Limit sleeve; 8. Support plate; 9. Extrusion plate; 10. Limit block; 11. Second gear rod; 12. Threaded sleeve; 13. Acceleration gear assembly; 14. Threaded rod; 15. Residual gear; 16. Adjustment plate. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] The following describes an embodiment of the present invention based on its overall structure.

[0031] First embodiment: See also Figure 1-Figure 9 The shield tunnel segment hoist shown in the figure comprises a cross bar 1, a clamping arm 2, a support plate 8, a clamping mechanism, a limiting mechanism and a sliding mechanism, wherein the clamping arm 2 is symmetrically and slidably arranged on the outer wall of the cross bar 1, and a support rod 3 is hinged at the top of the clamping arm 2, the support rod 3 is cross-arranged, and the connecting end of the support rod 3 is connected to the output end of the lifting device, the cross bar 1 is moved to the ground by the lifting device, and then the support rod 3 continues to move downward. During this process, the clamping arm 2 will slide to both sides under the action of the support rod 3. After moving to the specified position, since the bottom end of the clamping arm 2 is connected to the universal wheel 4, the staff pushes the device as a whole to the two ends of the tunnel segment under the action of the universal wheel 4. During this process, the lifting device lifts the support rod 3 upwards, and the clamping arm 2 will slide inwards under the action of the support rod 3, so that the clamping arm 2 automatically clamps the two ends of the tunnel segment, saving a lot of manpower and material resources; In addition, a second gear rod 11 is elastically slidably provided on the inner side of the clamping arm 2, and an extrusion plate 9 is connected to one end of the second gear rod 11, and the extrusion plate 9 and the two ends of the tunnel segment are at the same horizontal height. In the process of the clamping arm 2 sliding inward, the extrusion plate 9 will first contact the two ends of the tunnel segment. As the hoisting device drives the clamping arm 2 to continue sliding, the extrusion plate 9 will drive the second gear rod 11 at one end to move to one side. Since an adjustment plate 16 is connected to one side of the support plate 8, and two gears connected to the second gear rod 11 are installed on both sides of the adjustment plate 16. The residual gear 15 cooperates with the rod 11, so when the second gear rod 11 slides to one side under the action of the extrusion plate 9, the tooth block on the second gear rod 11 will mesh with the residual gear 15, thereby causing the residual gear 15 to rotate at a certain angle and drive the adjustment plate 16 to flip accordingly. Since the adjustment plate 16 and the support plate 8 are interconnected, the support plate 8 will also flip at a certain angle during the change process and contact the inner wall of the tunnel segment. In this process, there is no need for manual operation and support, which speeds up the overall lifting efficiency; At the same time, a limit rod 6 is symmetrically arranged at the bottom of the cross bar 1. The limit rod 6 itself can prevent the two assembled clamping arms 2 from rubbing against each other during the unloaded process of the sling, and limit sleeves 7 are symmetrically installed on both sides of the limit rod 6, and a first toothed rod 5 is installed on the inner side of the clamping arm 2 at the same horizontal height as the limit rod 6, and an acceleration gear assembly 13 that cooperates with the first toothed rod 5 is rotatably arranged in the limit sleeve 7, a threaded rod 14 is connected to the bottom end of the acceleration gear assembly 13, and a threaded sleeve 12 is sleeved on the outer wall of the threaded rod 14, and one end of the threaded sleeve 12 passes through the limit sleeve 7 and is connected to the limit block 10, and during the rotation of the acceleration gear assembly 13, the threaded rod 14 at the bottom end will be driven to rotate, and the threaded sleeve 12 is driven to slide downward through the cooperation of the threaded rod 14 and the threaded sleeve 12; As a result, the limit block 10 at the bottom end of the limit sleeve 7 will contact the top of the tunnel segment, and at the same time cooperate with the bottom support plate 8 to complete the limiting work of the tunnel segment, preventing the tunnel segment itself from shaking during the lifting process, improving the overall stability of the lifting, and effectively preventing the occurrence of accidents during the lifting process. After the lifting of the tunnel segment is completed, the output end of the lifting equipment will drive the clamping arm 2 to slide to both sides through the support rod 3. During this process, the first gear rod 5 will follow the clamping arm 2 to reset, causing the acceleration gear assembly 13 to reverse, and at the same time, the limit block 10 will reset and slide upward and release the contact with the top of the tunnel segment. At the same time, under the resetting action of the outer wall elastic component of the second gear rod 11, the support plate 8 will be recovered to the inner wall of the clamping arm 2, which is convenient for subsequent staff to slide the device as a whole to one side of the tunnel segment through the universal wheel 4.

[0032] In the above embodiments, please refer to Figure 7, wherein the acceleration gear assembly 13 includes a driving gear and a driven gear, a driving gear is meshed on one side of the first gear rod 5, and a driven gear matching therewith is arranged on one side thereof, wherein the top end of the threaded rod 14 is connected to the driven gear, and the driving gear is driven to rotate during the sliding of the first gear rod 5 through the clamping arm 2, and the threaded rod 14 is driven to rotate through the meshing with the driven gear. Since the diameter of the driving gear in the acceleration gear assembly 13 is larger than the diameter of the driven gear, the driven gear will drive the threaded rod 14 to rotate several times during the rotation of the driving gear, thereby ensuring that the limit block 10 at the bottom can fully contact and limit with the top end of the tunnel segment.

[0033] In the above embodiments, please refer to Figure 3 and Figure 5 The bottom end of the limit block 10 and the top end of the support plate 8 are both detachably provided with a protective cover, which is made of a flexible wear-resistant material. When facing the curved surface of the tunnel segment, the limit block 10 and the support plate 8 can be ensured to re-contact and limit the tunnel segment, thereby improving the stability of the movement of the tunnel segment during the lifting process. The tooth block on the outer wall of the first tooth bar 5 is locally set. In the process of the clamping arm 2 driving the first tooth bar 5 to slide to one side, the limit block 10 at the bottom end of the limit sleeve 7 can be ensured to be quickly adjusted, so that it is suitable for tunnel segments of different sizes and thicknesses, thereby improving the overall practicality of the device.

[0034] Second embodiment: See also Figure 2 A shield tunnel segment hoist shown in the figure has an overall structure similar to that of Example 1, wherein the bottom of the clamping arm 2 is telescopically connected to a universal wheel 4, and the top of the universal wheel 4 and the clamping arm 2 are self-lockingly connected. When the device is moved to the ground by the lifting equipment, the cross bar 1 is conveniently moved to the two ends of the tunnel segment under the action of the universal wheel 4. At the same time, the staff can also adjust the overall height of the universal wheel 4 according to the tunnel segments of different sizes and thicknesses, thereby facilitating the subsequent flipping of the support plate 8 so that its top can fully contact the inner wall of the tunnel segment. The self-locking setting ensures that the overall height of the clamping arm 2 can be adjusted when hoisting tunnel segments of different thicknesses, without the need to replace the hoist, thereby improving the overall practicality of the device.

[0035] When the present invention is in operation, one end of the support rod 3 is connected to the lifting device, and then the cross bar 1 is moved to the specified position by the lifting device. At this time, the support rod 3 drives the clamping arm 2 to slide to both sides on the cross bar 1, and then the lifting fixture is moved to the two ends of the tunnel segment under the action of the universal wheel 4. At this time, the lifting device pulls the support rod 3 upward, and the clamping arm 2 slides inward under the action of the support rod 3, completing the automatic clamping work of the two ends of the tunnel segment. In the process of sliding of the clamping arm 2, the inner extrusion plate 9 contacts the two ends of the tunnel segment and drives the second gear rod 11 at one end to slide to one side, thereby causing the support plate 8 to flip over and contact the inner wall of the tunnel segment. In this process, the lifting device can directly lift the tunnel segment. At the same time, when the clamping arm 2 slides inward, the first gear rod 5 will be driven to move. At this time, the first gear rod 5 passes through the limit rod 6 and drives the threaded rod 14 to rotate under the action of the acceleration gear assembly 13. Since a threaded sleeve 12 is provided on the outer wall of the threaded rod 14 for sliding, and one end of the threaded sleeve 12 passes through the bottom of the limit sleeve 7 and connects to the limit block 10, the threaded sleeve 12 will drive the limit block 10 to slide downward during this process, so that the limit block 10 contacts the top of the tunnel segment. The tunnel segment is limited during the lifting process through the cooperation of the limit block 10 and the support plate 8, which prevents the tunnel segment itself from shaking during the lifting process and improves the overall stability of the lifting.

[0036] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A shield tunnel segment hanger, comprising a crossbar (1) and a clamping arm (2), characterized in that: The outer wall of the crossbar (1) is symmetrically and slidably provided with a clamping arm (2), and a support rod (3) is hingedly connected to the top of the clamping arm (2); a second gear rod (11) is elastically and slidably provided on the inner side of the clamping arm (2); and a support plate (8) cooperating with the second gear rod (11) is rotatably provided inside the clamping arm (2); a limit rod (6) is symmetrically provided at the bottom of the crossbar (1), and limit sleeves (7) are symmetrically installed on both sides of the limit rod (6); A first gear rod (5) is installed on the inner side of the clamping arm (2) at the same level as the limiting rod (6), and an acceleration gear assembly (13) that cooperates with the first gear rod (5) is rotatably arranged in the limiting sleeve (7), and a limiting block (10) that cooperates with the acceleration gear assembly (13) is connected to the bottom end of the limiting sleeve (7).

2. A shield tunnel segment hanger according to claim 1, characterized in that: One end of the second gear rod (11) is connected to a pressing plate (9), and one side of the pressing plate (9) is detachably arranged.

3. The shield tunnel segment hanger according to claim 1, characterized in that: An adjustment plate (16) is connected to one side of the support plate (8), and residual gears (15) cooperating with the second gear rod (11) are installed on both sides of the adjustment plate (16).

4. The shield tunnel segment hanger according to claim 1, characterized in that: The bottom of the clamping arm (2) is telescopically connected to a universal wheel (4), and a self-locking connection is formed between the top of the universal wheel (4) and the clamping arm (2).

5. The shield tunnel segment hanger according to claim 1, characterized in that: The bottom end of the acceleration gear assembly (13) is connected to a threaded rod (14), and a threaded sleeve (12) is sleeved on the outer wall of the threaded rod (14), and one end of the threaded sleeve (12) passes through the limiting sleeve (7) and is connected to the limiting block (10).

6. The shield tunnel segment hanger according to claim 1, characterized in that: The acceleration gear assembly (13) comprises a driving gear and a driven gear, one side of the first gear rod (5) is meshed with the driving gear, and one side of the first gear rod (5) is provided with a driven gear matching with the driving gear, wherein the top end of the threaded rod (14) is connected to the driven gear, and the diameter of the driving gear in the acceleration gear assembly (13) is greater than the diameter of the driven gear.

7. The shield tunnel segment hanger according to claim 1, characterized in that: The bottom end of the limit block (10) and the top end of the support plate (8) are both detachably provided with protective covers, and the bottom end of the protective cover itself is deformably provided.

8. The shield tunnel segment hanger according to claim 1, characterized in that: Rollers are arranged on the inner side of the clamping arm (2) at both the upper and lower ends of the cross bar (1), and the contact surfaces between the rollers and the cross bar (1) are smooth.

9. The shield tunnel segment hanger according to claim 1, characterized in that: The tooth block on the outer wall of the first toothed rod (5) is locally arranged.

10. The shield tunnel segment hanger according to claim 5, characterized in that: A guide mechanism is connected between the threaded sleeve (12) and the limiting sleeve (7).

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