Vertical lifting appliance for lifting rectangular jacking pipe joint

Abstract

The utility model discloses a vertical lifting appliance for lifting a rectangular pipe-jacking pipe joint, which relates to the technical field of pipe-jacking engineering and comprises a carrying pole cross beam, the carrying pole cross beam consists of a top plate, a bottom plate and a web plate, and two vertical moving plates are transversely mounted between the top plate and the bottom plate in a sliding manner; guide grooves in sliding fit with the moving plate are formed in the opposite surfaces of the top plate and the bottom plate; a through groove is formed in the middle of the web, a vertical rotating shaft is rotationally installed in the through groove and located in the center of the carrying pole cross beam, the upper end of the rotating shaft penetrates through the top plate to extend out and is connected with a driving mechanism, and the rotating shaft in the through groove is sleeved with a gear; racks in meshed connection with the gears are fixedly mounted on the opposite surfaces of the two moving plates; the shoulder pole cross beam is sleeved with two sliding sleeves which are arranged in a bilateral symmetry mode, and the two sliding sleeves are fixedly connected with the end of one movable plate. And the distance between the lifting lugs on the left side and the right side can be rapidly adjusted through the driving mechanism, so that the vertical lifting appliance can lift pipe joints with different sizes.

Description

Technical Field

[0001] This utility model relates to the field of pipe jacking engineering technology, specifically to a vertical lifting tool for hoisting rectangular pipe jacking sections. Background Technology

[0002] The underground utility tunnel pipe jacking project is a trenchless construction method. The pipe jacking is a prefabricated single-compartment pipe section. Generally, a crane is used to lift the pipe section to the foundation pit for easy jacking construction. However, for pipe sections of different sizes, multiple lifting tools need to be fabricated to lift the pipe section.

[0003] Traditional pipe jacking systems require lifting equipment that can only lift pipe sections of the same structural size. They cannot be used for pipe sections of different sizes. When using them, different sizes of lifting equipment need to be carried to the construction site and replaced according to the different sizes of pipe sections. This is inconvenient, inefficient and costly. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing a vertical lifting tool for hoisting rectangular jacking pipe sections.

[0005] The technical solution of this utility model is: a vertical lifting device for hoisting rectangular jacking pipe sections, including a spreader beam, which is composed of a top plate, a bottom plate, and a web plate. Two vertical movable plates are slidably installed between the top plate and the bottom plate, and guide grooves that slide with the movable plates are opened on the opposite surfaces of the top plate and the bottom plate. The two movable plates are located on the front and rear sides of the web plate, respectively. A through groove is opened in the middle of the web plate, and a vertical rotating shaft is rotatably installed in the through groove. The rotating shaft is located at the center of the spreader beam, and its upper end extends through the top plate and is connected to a drive mechanism. A gear is fitted on the rotating shaft in the through groove. A rack that meshes with the gear is fixedly installed on the opposite surfaces of the two movable plates.

[0006] The crossbeam of the carrying pole is fitted with two symmetrically arranged sliding sleeves. The upper and lower sides of the sliding sleeves are provided with lifting lugs. The two sliding sleeves are respectively fixedly connected to the end of a movable plate.

[0007] Preferably, the drive mechanism includes a worm gear and a worm shaft that are meshed together. The worm gear is fitted onto the upper end of the rotating shaft. Two mounting brackets are fixed on the top plate, arranged side by side. The worm shaft is rotatably mounted on the two mounting brackets, and one end of the worm shaft is connected to a handwheel.

[0008] Preferably, multiple horizontal stiffening plates are provided at the junction of the sliding sleeve and the moving plate.

[0009] Preferably, the lifting lug consists of a lifting lug plate and four lifting lug stiffening plates.

[0010] Preferably, the top of the sliding sleeve is threaded with a tightening bolt that mates with the top plate.

[0011] Preferably, it also includes an upper wire rope, a lower wire rope, and a load-bearing pin. The lower end of the upper wire rope is connected to the upper lifting lug via a shackle. The outer end of the load-bearing pin is provided with two side-by-side limiting plates. The upper end of the lower wire rope is connected to the lower lifting lug via a shackle, and its lower end is fitted onto the load-bearing pin between the two limiting plates.

[0012] Preferably, it also includes a connecting rope, and the outer end of the load-bearing pin is provided with a pull ring, which is connected to the lower wire rope through the connecting rope.

[0013] Compared with the prior art, this utility model has the following advantages:

[0014] This vertical lifting device has a simple structure, compact design, and is easy to operate. The distance between the lifting lugs on the left and right sides can be quickly adjusted through the drive mechanism, and the lifting lugs on both sides remain symmetrical during the adjustment process, enabling this vertical lifting device to lift pipe sections of different sizes. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 for Figure 1 Cross-sectional view;

[0017] Figure 3 This is a schematic diagram of the usage state of this utility model.

[0018] In the diagram: 1. Carrying beam, 2. Moving plate, 3. Guide groove, 4. Through groove, 5. Rotating shaft, 6. Gear, 7. Rack, 8. Sliding sleeve, 9. Lifting lug plate, 10. Lifting lug stiffening plate, 11. Tightening bolt, 12. Mounting bracket, 13. Worm gear, 14. Worm wheel, 15. Handwheel, 16. Upper wire rope, 17. Lower wire rope, 18. Load-bearing pin, 19. Limiting plate, 20. Pull ring, 21. Connecting rope, 22. Horizontal stiffening plate. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1

[0020] Reference Figure 1-3As shown, a vertical lifting device for hoisting rectangular jacking pipe sections includes a spreader beam 1, which is composed of a top plate, a bottom plate, and a web. Two vertical movable plates 2 are slidably installed between the top plate and the bottom plate, and guide grooves 3 that slide with the movable plates 2 are provided on the opposite surfaces of the top plate and the bottom plate. The two movable plates 2 are located on the front and rear sides of the web, respectively. A through groove 4 is provided in the middle of the web. A vertical rotating shaft 5 is rotatably installed in the through groove 4. The rotating shaft 5 is located at the center of the spreader beam 1, and its upper end extends through the top plate and is connected to a drive mechanism. A gear 6 is fitted on the rotating shaft 5 in the through groove 4. A rack 7 that meshes with the gear 6 is fixedly installed on the opposite surfaces of the two movable plates 2.

[0021] Two symmetrically arranged sliding sleeves 8 are fitted on the crossbeam 1. The upper and lower sides of the sliding sleeves 8 are provided with lifting lugs. The two sliding sleeves 8 are respectively fixedly connected to the end of a movable plate 2.

[0022] The drive mechanism includes a worm gear 14 and a worm 13 that are meshed together. The worm gear 14 is mounted on the upper end of the rotating shaft 5. Two mounting brackets 12 are fixed on the top plate, arranged side by side. The worm 13 is rotatably mounted on the two mounting brackets 12, and one end of the worm is connected to a handwheel 15.

[0023] It also includes an upper wire rope 16, a lower wire rope 17, and a load-bearing pin 18. The lower end of the upper wire rope 16 is connected to the upper lifting lug via a shackle. The outer end of the load-bearing pin 18 is provided with two side-by-side limiting plates 19. The upper end of the lower wire rope 17 is connected to the lower lifting lug via a shackle, and its lower end is fitted onto the load-bearing pin 18 between the two limiting plates 19.

[0024] Initially, the two sliding sleeves 8 are located at the left and right ends of the crossbeam 1, respectively. In use, first, the buckles at the upper ends of the two upper wire ropes 16 are attached to the crane hooks. Then, according to the size of the pipe section to be lifted, the distance between the lifting lugs on the left and right sides is adjusted: Turning the handwheel 15 causes the gear 6 to rotate under the transmission of the worm gear 13 and worm wheel 14. Since the gear 6 meshes with both front and rear racks 7, the two sliding sleeves 8 move towards each other under the drive of the racks 7. Because the worm gear 13 and worm wheel 14 mechanism has a self-locking property, once the two sliding sleeves 8 are adjusted to their positions, simply stopping the rotation of the handwheel 15 will lock the position of the sliding sleeves 8. Finally, the load-bearing pin 18 is inserted into the steel sleeve pre-embedded in the pipe section, thus connecting the vertical lifting device to the pipe section.

[0025] This vertical lifting device has a simple structure, compact design, and is easy to operate. The distance between the lifting lugs on the left and right sides can be quickly adjusted through the drive mechanism, and the lifting lugs on both sides remain symmetrical during the adjustment process, enabling this vertical lifting device to lift pipe sections of different sizes. Example 2

[0026] As a preferred embodiment of this utility model, this embodiment adds a tightening bolt 11 and several stiffening plates to the first embodiment, specifically:

[0027] Reference Figure 1 As shown, in this embodiment, the top of the sliding sleeve 8 is threaded with a tightening bolt 11 that mates with the top plate; after the sliding sleeve 8 is adjusted to the correct position, the sliding sleeve 8 can be further fixed by tightening the tightening bolt 11.

[0028] In addition, in order to improve the stability of the connection between the sliding sleeve 8 and the moving plate 2, two horizontal stiffening plates 22 are provided at the joint between the sliding sleeve 8 and the moving plate 2.

[0029] The lifting lug consists of a lifting lug plate 9 and four lifting lug stiffening plates 10, which are welded and fixed to the crossbeam 1. Example 3

[0030] As a preferred embodiment of this utility model, this embodiment adds a connecting rope 21 based on embodiment one, specifically as follows:

[0031] Reference Figure 3 As shown, this embodiment also includes a connecting rope 21, and a pull ring 20 is provided at the outer end of the load-bearing pin 18. The pull ring 20 is connected to the lower wire rope 17 through the connecting rope 21.

[0032] The installation of the connecting rope 21 can prevent the load-bearing pin 18 from falling accidentally, thus improving the safety of construction.

[0033] This utility model is not limited to the above-described embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model, and the changed content still falls within the protection scope of this utility model.

Claims

1. A vertical lifting device for hoisting rectangular pipe jacking sections, comprising a spreader beam, characterized in that: The crossbeam of the carrying pole consists of a top plate, a bottom plate, and a web plate. Two vertically movable plates are slidably installed between the top plate and the bottom plate, and guide grooves that slide with the movable plates are opened on the opposite surfaces of the top plate and the bottom plate. The two movable plates are located on the front and rear sides of the web plate, respectively. A through groove is opened in the middle of the web plate, and a vertical rotating shaft is rotatably installed in the through groove. The rotating shaft is located at the center of the crossbeam of the carrying pole, and its upper end extends through the top plate and is connected to a drive mechanism. A gear is fitted on the rotating shaft in the through groove. A rack that meshes with the gear is fixedly installed on the opposite surfaces of the two movable plates. The crossbeam of the carrying pole is fitted with two symmetrically arranged sliding sleeves. The upper and lower sides of the sliding sleeves are provided with lifting lugs. The two sliding sleeves are respectively fixedly connected to the end of a movable plate.

2. The vertical lifting device for hoisting rectangular jacking pipe sections according to claim 1, characterized in that: The drive mechanism includes a worm gear and a worm shaft that are meshed together. The worm gear is fitted onto the upper end of the rotating shaft. Two mounting brackets are fixed on the top plate, arranged side by side. The worm shaft is rotatably mounted on the two mounting brackets, and one end of the worm shaft is connected to a handwheel.

3. The vertical lifting device for hoisting rectangular jacking pipe sections according to claim 1, characterized in that: Multiple horizontal stiffening plates are provided at the junction of the sliding sleeve and the moving plate.

4. The vertical lifting device for hoisting rectangular jacking pipe sections according to claim 1, characterized in that: The lifting lug consists of a lifting lug plate and four lifting lug stiffening plates.

5. A vertical lifting device for hoisting rectangular jacking pipe sections according to claim 1, characterized in that: The top of the sliding sleeve is threaded with a tightening bolt that mates with the top plate.

6. The vertical lifting device for hoisting rectangular jacking pipe sections according to claim 1, characterized in that: It also includes an upper wire rope, a lower wire rope, and a load-bearing pin. The lower end of the upper wire rope is connected to the upper lifting lug via a shackle. The outer end of the load-bearing pin is provided with two side-by-side limiting plates. The upper end of the lower wire rope is connected to the lower lifting lug via a shackle, and its lower end is fitted onto the load-bearing pin between the two limiting plates.

7. A vertical lifting device for hoisting rectangular jacking pipe sections according to claim 6, characterized in that: It also includes a connecting rope, and the outer end of the load-bearing pin is provided with a pull ring, which is connected to the lower wire rope through the connecting rope.

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