A shield tunnel segment hoist

Abstract

The present invention discloses a shield tunnel segment hoist, which relates to the field of tunnel segments and includes a cross bar and a clamping arm, wherein the outer wall of the cross bar is symmetrically provided with a clamping arm for sliding movement, and a support rod is hinged at the top of the clamping arm, a second gear rod is elastically provided on the inner side of the clamping arm for sliding movement, and a support plate is rotatably provided inside the clamping arm, a limit rod is symmetrically provided on the bottom of the cross bar, and limit sleeves are symmetrically provided on both sides of the limit rod, and a first gear rod is provided on the inner side of the clamping arm at the same horizontal height as the limit rod. In the present invention, 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, causing the support plate to flip and contact the inner wall of the tunnel segment, and the first gear rod will drive the acceleration gear assembly to rotate, thereby achieving that during the clamping process, the limit block will move to the top of the tunnel segment and contact it.

Description

Technical Field

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

[0002] Shield tunnel segments are precast concrete slabs used to support the tunnel walls during shield tunnel construction. As the shield machine advances underground, the segments are spliced together to form a sealed tunnel structure. Each segment is typically composed of multiple blocks, which are connected by bolts to ensure the stability and waterproofing of the tunnel. Before installation, specialized lifting equipment is required to lift and transport the segments to the designated location.

[0003] Most of the existing tunnel segment lifters support the bottom of the segment through support rods, and then move it to the designated position under the action of a crane. In order to prevent the tunnel segment from shaking on the top of the support rod during 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 designated position, the staff will need to manually dismantle 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 wastes too much manpower and material resources, reduces the overall lifting efficiency, and is prone to accidents when manually operating the tunnel segments.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a shield tunnel segment hoist, comprising a crossbar and a clamping arm, wherein the clamping arm is symmetrically and slidably provided on the outer wall of the crossbar, and a support rod is hingedly connected to the top of the clamping arm, a second gear rod is elastically and slidably provided on the inner side of the clamping arm, and a support plate is rotatably provided in the clamping arm and cooperates with the second gear rod, limit rods are symmetrically provided on the bottom of the crossbar, and limit sleeves are symmetrically installed on both sides of the limit rod;

[0007] A first gear rod is installed on the inner side of the clamping arm at the same horizontal height 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.

[0008] By adopting the above technical solution, when the clamping arm slides inward under the action of the support rod, one side of the extrusion plate will first contact the two ends of the tunnel segment, causing the support plate to flip 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 drives the limit block to slide downward, thereby achieving the limit block moving to the top of the tunnel segment and contacting it during the clamping process, and at the same time cooperating with the support rod at the bottom to complete the limiting work of the tunnel segment.

[0009] 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.

[0010] Preferably, during the process of the clamping arm sliding inward, the extrusion plate will first contact the two ends of the tunnel segment. During the continued sliding process, the extrusion plate will drive the second gear rod at one end to move to one side, and the detachable setting makes it convenient for staff to maintain and replace it regularly.

[0011] 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.

[0012] 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 engage with the residual gear, thereby causing the residual gear to rotate at a certain angle and drive the adjustment plate to flip accordingly. Since the adjustment plate and the support plate are interconnected, the support plate will also flip at a certain angle during this process.

[0013] 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.

[0014] Preferably, when the device is moved to the ground by lifting 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. This makes it easier for the top of the support plate to fully contact the inner wall of the tunnel segment when it is subsequently flipped. The self-locking setting ensures that the overall height of the clamping arm can be adjusted when lifting tunnel segments of different thicknesses without replacing the lifting equipment, thereby improving the overall practicality of the device.

[0015] The present invention is further configured such that the bottom end of the acceleration gear assembly is connected to a threaded rod, and a threaded sleeve is sleeved on the outer wall of the threaded rod, and one end of the threaded sleeve passes through the limiting sleeve and is connected to the limiting block.

[0016] Preferably, during the rotation of the acceleration gear assembly, the threaded rod at the bottom end will be driven to rotate as well. 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.

[0017] 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 with one side of the first gear rod, and a driven gear matching it is provided 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 larger than the diameter of its driven gear.

[0018] Preferably, the driving gear will be driven to rotate when the first gear rod slides through the clamping arm, 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 its driven gear, the driven gear will drive the threaded rod to rotate several times as many times as the driving gear rotates several times, thereby ensuring that the limit block at the bottom end can fully contact and limit the top of the tunnel segment.

[0019] 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.

[0020] 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 re-contact and limit the tunnel segment, thereby improving the stability of the tunnel segment movement during the lifting process.

[0021] The present invention is further configured such that rollers are provided on the inner side of the clamping arm at both upper and lower ends of the cross bar, and the contact surfaces between the rollers and the cross bar are smooth.

[0022] 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.

[0023] The present invention is further configured such that the tooth block on the outer wall of the first gear rod is locally provided.

[0024] 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.

[0025] The present invention is further configured such that a guide mechanism is connected between the threaded sleeve and the limiting sleeve.

[0026] Preferably, the setting of the guide mechanism prevents 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.

[0027] In summary, the present invention mainly has the following beneficial effects:

[0028] The present invention provides a clamping arm symmetrically slidingly arranged on a crossbar. The device is moved to a designated position by a hoisting device and then placed on the ground. Under the action of the support rod, the clamping arm is driven to slide to both sides of the crossbar, thereby ensuring that the clamping arm is at both ends of the tunnel segment to be hoisted. The hoisting device then lifts the support rod upward, and the clamping arm slides inwardly through the support rod, thereby realizing the automatic clamping of the two ends of the tunnel segment, saving a lot of manpower and material resources.

[0029] The present invention provides a second gear rod elastically slidingly provided 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. During this process, no manual operation and support is required, which speeds up the overall lifting efficiency and reduces the workload of the staff.

[0030] The present invention provides limiting sleeves on both sides of the limiting rod, and one end of the first gear rod passes through the limiting rod. When the clamping arm slides inward for clamping, the first gear rod drives the acceleration gear assembly to rotate, and the limit block is driven to slide downward through the cooperation of the threaded rod and the threaded sleeve. As a result, the limit block moves to the top of the tunnel segment and contacts it during the clamping process, and 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

[0031] Figure 1 A perspective view of the present invention;

[0032] Figure 2 It is the front view of the present invention;

[0033] Figure 3 It is a schematic diagram of the structure of the clamping arm of the present invention;

[0034] Figure 4 For the present invention Figure 1 A magnified view of middle A;

[0035] Figure 5A bottom perspective view of the present invention;

[0036] Figure 6 Schematic diagram of the limiting rod structure of the present invention;

[0037] Figure 7 It is a schematic diagram of the pressing plate structure of the present invention;

[0038] Figure 8 This is a schematic diagram of the support plate adjustment structure of the present invention;

[0039] Figure 9 For the present invention Figure 5 Magnified view of B.

[0040] Description of reference numerals:

[0041] 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

[0042] 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 should not be understood as limiting the present invention.

[0043] The following describes an embodiment of the present invention based on its overall structure.

[0044] First embodiment:

[0045] See also Figures 1-9 When the lifting device is lifted up, the support rod 3 is lifted up and the lifting device is in a state of being rotated, so that the lifting arm 2 can be lifted up and the lifting plate 8 can be lifted up, thereby greatly reducing the labor and material resources.

[0046] 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 one side of the support plate 8 is connected to the adjustment plate 16, 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 this process and contact the inner wall of the tunnel segment. In this process, no manual operation and support is required, which speeds up the overall lifting efficiency.

[0047] 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 a limit sleeve 7 is symmetrically installed on both sides of the limit rod 6, and a first gear 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 is rotatably arranged in the limit sleeve 7 and cooperates with the first gear rod 5, 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 when the acceleration gear assembly 13 rotates, the threaded rod 14 at the bottom end will be driven to rotate accordingly, and the threaded sleeve 12 is driven to slide downward through the cooperation of the threaded rod 14 and the threaded sleeve 12;

[0048] 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 support plate 8 at the bottom 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 tunnel segment is lifted, 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 causing the limit block 10 to reset and slide upward and release the contact with the top of the tunnel segment. At the same time, under the reset action of the outer wall elastic component of the second gear rod 11, the support plate 8 will be retracted to the inner wall of the clamping arm 2, making it convenient for subsequent staff to slide the entire device to one side of the tunnel segment through the universal wheel 4.

[0049] In the above embodiment, 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 it is provided on one side thereof, wherein the top end of the threaded rod 14 is connected to the driven gear. When the first gear rod 5 slides through the clamping arm 2, the driving gear will be driven to rotate, and the threaded rod 14 will be driven to rotate by meshing with the driven gear. Since the diameter of the driving gear in the acceleration gear assembly 13 is larger than the diameter of its driven gear, the driven gear will drive the threaded rod 14 to rotate several times during the process of the driving gear rotating several circles, thereby ensuring that the limit block 10 at the bottom can fully contact and limit the top of the tunnel segment.

[0050] In the above embodiment, 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, it can ensure that the limit block 10 and the support plate 8 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 gear rod 5 is locally set. In the process of the clamping arm 2 driving the first gear rod 5 to slide to one side, it can ensure that the limit block 10 at the bottom end of the limit sleeve 7 can be quickly adjusted, so that it is suitable for tunnel segments of different sizes and thicknesses, thereby improving the overall practicality of the device.

[0051] Second embodiment:

[0052] See also Figure 2 The shield tunnel segment hoist shown has an overall structure similar to that of Example 1, wherein the bottom of the clamping arm 2 is telescopically connected to the universal wheel 4, and the top of the universal wheel 4 and the clamping arm 2 are self-lockingly connected. When the lifting equipment moves the device to the ground, the cross bar 1 is easily 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 replacing the hoist, thereby improving the overall practicality of the device.

[0053] When the present invention is in specific 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 will drive 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 of the two ends of the tunnel segment. In the process of sliding of the clamping arm 2, the inner extrusion plate 9 will contact the two ends of the tunnel segment and drive 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.

[0054] 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, during this process, the threaded sleeve 12 will drive the limit block 10 to slide downward, so that the limit block 10 contacts the top of the tunnel segment. Through the cooperation of the limit block 10 and the support plate 8, the tunnel segment is limited during the lifting process, which prevents the tunnel segment itself from shaking during the lifting process and improves the overall stability of the lifting.

[0055] 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 an appropriate 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 embodiment without creative contribution 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 hoist, comprising a crossbar (1) and a clamping arm (2), characterized in that: The outer wall of the crossbar (1) is symmetrically slidably provided with a clamping arm (2), and a support rod (3) is hingedly connected to the top of the clamping arm (2). The inner side of the clamping arm (2) is elastically slidably provided with a second gear rod (11), and a support plate (8) cooperating with the second gear rod (11) is rotatably provided inside the clamping arm (2). The bottom of the crossbar (1) is symmetrically provided with a limit rod (6), 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) cooperating with the first gear rod (5) is rotatably arranged in the limiting sleeve (7), and a limiting block (10) cooperating with the acceleration gear assembly (13) is connected to the bottom end of the limiting sleeve (7), one end of the second gear rod (11) is connected to an extrusion plate (9), and a detachable arrangement is provided on one side of the extrusion plate (9), and an adjustment plate (16) is connected to one side of the support plate (8), and gears cooperating with the second gear rod (11) are installed on both sides of the adjustment plate (16). 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). The acceleration gear assembly (13) includes a driving gear and a driven gear. One side of the first gear rod (5) is meshed with the driving gear, and a driven gear matched with the driving gear is provided on one side thereof, wherein the top end of the threaded rod (14) is connected to the driven gear. The diameter of the driving gear in the acceleration gear assembly (13) is larger than the diameter of the driven gear.

2. The shield tunnel segment lifting device 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).

3. The shield tunnel segment lifting device 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.

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

5. The shield tunnel segment lifting device according to claim 1, characterized in that: The tooth block on the outer wall of the first gear rod (5) is locally provided.

6. The shield tunnel segment lifting device according to claim 1, characterized in that: A guide mechanism is connected between the threaded sleeve (12) and the limiting sleeve (7).

Images