Large-span hyperbolic steel beam pre-arching device

Abstract

The large-span hyperbolic steel beam pre-arching device comprises an arching steel pipe body and two bases arranged below the arching steel pipe body, the lower end of the arching steel pipe body abuts against the upper ends of the two bases respectively, the lower end of the arching steel pipe body is fixedly connected with a positioning block, and the positioning block is fixedly connected with the arching steel pipe body. Positioning grooves corresponding to the positioning blocks are formed in the upper end of the base, the lower ends of the positioning blocks slidably extend into the positioning grooves, sliding grooves are formed in the two sides in the positioning grooves, moving blocks are slidably inserted into the inner side walls of the sliding grooves, and clamping blocks are fixedly connected to the ends, close to the positioning blocks, of the moving blocks; clamping grooves corresponding to the clamping blocks are formed in the two sides of the positioning block, and one ends of the clamping blocks extend into the clamping grooves in a sliding mode. Through the arrangement of the positioning block, the movable ring and other mechanisms, the arching steel pipe can be conveniently positioned, meanwhile, the arching steel pipe can be rapidly installed and fixed, and convenience and efficiency during installation are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pre-arching, in particular to a pre-arching device for a large-span hyperbolic steel beam. Background Art

[0002] Pre-cambering devices are installed during the installation of long-span hyperbolic steel beams to improve visual quality, correct for deadweight settlement, and accommodate load variations. Pre-cambering ensures that the beam maintains a certain degree of camber after installation, thereby enhancing its load-bearing capacity and stability.

[0003] However, the existing pre-arching device is not convenient to align and position during installation, and a large number of bolts are used for fixing during the installation process, which makes the operation cumbersome and the efficiency needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology and to propose a pre-arching device for a large-span hyperbolic steel beam.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The lifting mechanism is a kind of long-span hyperbolic steel beam pre-arching device, comprises an arching steel pipe body and two bases arranged below it, the lower end of the arching steel pipe body is respectively abutted against the upper end of the two bases, the lower end of the arching steel pipe body is fixedly connected with a positioning block, the upper end of the base is provided with a positioning slot corresponding to the positioning block, the lower end of the positioning block slides and extends into the positioning slot, the inner two sides of the positioning slot are provided with a slide slot, and a moving block is slidably inserted into the inner side wall of the slide slot, and the moving block is fixedly connected with a clamping block near one end of the moving block, and the two sides of the positioning block are provided with a clamping slot corresponding to the clamping block, one end of the clamping block slides and extends into the clamping slot, and the other end of the moving block is inserted with an adjusting rod, and the adjusting rod and the moving block are threadedly connected. The cam is fixedly provided with a first gear meshing with the first gear, and the upper end of the connecting rod passes through the groove and is provided with a first gear meshing with the first gear.

[0007] Preferably, a fixing block is fixedly embedded in the positioning block, and the upper end of the fixing block passes through the positioning block and is fixedly inserted into the arched steel pipe body.

[0008] Preferably, both ends of the fixing block are T-shaped.

[0009] Preferably, a guide rod arranged in a 7-shape is slidably inserted into one end of the moving block close to the adjusting rod, and one end of the guide rod away from the moving block is fixedly connected to the inner bottom of the sliding groove.

[0010] Preferably, the worm is rotatably sleeved with two fixing rings, and the two fixing rings are respectively fixed on the upper and lower sides of the sliding groove.

[0011] Preferably, the lower end of the positioning block is tapered.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention can quickly place the arched steel pipe on the base through the arrangement of the positioning block and the positioning groove. The arrangement of the clamping block, the moving block, the adjusting rod, the worm gear, the worm, the second gear, the movable ring, the first gear, the connecting column and the hexagonal socket can facilitate users to quickly install and fix the arched steel pipe to the base, which is convenient and efficient.

[0014] 2. In the utility model, the setting of the fixing block can improve the firmness between the arched steel pipe body and the positioning block and enhance reliability. The conical setting of the lower end of the positioning block can facilitate the insertion of the positioning block into the positioning groove, thereby improving the convenience of positioning. In the utility model, the setting of the positioning block and the movable ring and other mechanisms can facilitate the positioning operation of the arched steel pipe and can quickly install and fix it, thereby improving the convenience and efficiency of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a large-span hyperbolic steel beam pre-arching device proposed in the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the base of a large-span hyperbolic steel beam pre-arching device proposed in the utility model;

[0017] Figure 3 This is a structural schematic diagram of location A of a large-span hyperbolic steel beam pre-arching device proposed in the present invention;

[0018] Figure 4 This is a schematic diagram of a partial top view of the base structure of a large-span hyperbolic steel beam pre-arching device proposed in the utility model.

[0019] In the figure: 1-base, 2-arched steel pipe body, 3-worm, 4-adjusting rod, 5-positioning block, 6-fixed block, 7-block, 8-moving block, 9-guide rod, 10-second gear, 11-movable ring, 12-first gear, 13-connecting column. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-4 , a large-span hyperbolic steel beam pre-arching device, comprising an arched steel pipe body 2 and two bases 1 arranged below it, the lower ends of the arched steel pipe body 2 are respectively abutted against the upper ends of the two bases 1, and the lower ends of the arched steel pipe body 2 are fixedly connected with a positioning block 5 for cooperating with the positioning groove to realize rapid positioning of the arched steel pipe body 2, and a fixing block 6 is fixedly embedded in the positioning block 5 for improving the firmness between the positioning block 5 and the arched steel pipe body 2, the upper end of the fixing block 6 passes through the positioning block 5 and is fixedly inserted into the arched steel pipe body 2, and both ends of the fixing block 6 are T-shaped, for further improving the firmness between the positioning block 5 and the arched steel pipe body 2, the upper end of the base 1 is provided with a positioning groove corresponding to the positioning block 5, the lower end of the positioning block 5 slides and extends into the positioning groove, and the lower end of the positioning block 5 is tapered;

[0022] When the cam 8 is in the unlock state, the cam 8 is in the unlock state, and the cam 8 is in the unlock state, so that the cam 8 can be unlocked.

[0023] In this embodiment, a fixed sleeve at one end of the adjusting rod 4 away from the moving block 8 is provided with a worm gear, which is used to drive the adjusting rod 4 to rotate. The inner bottom of the slide is rotatably connected to a worm 3 meshing with the worm gear, which is used to drive the worm gear to rotate. The helix angle of the worm 3 is smaller than the friction angle of the worm gear 3, which is used to play a self-locking and anti-loosening role. The upper end of the base 1 is provided with an annular groove, and the upper end of the worm 3 passes through the base 1 and is fixedly connected to a second gear 10, which is used to drive the worm 3 to rotate. The second gear 10 is located in the groove. Two fixing rings are provided on the rotating sleeve of the worm 3 to improve the stability of the worm 3 during rotation. The two fixing rings are respectively fixed on the upper and lower sides of the slide.

[0024] In this embodiment, the inner bottom of the groove is rotatably connected to a movable ring 11 for driving the second rack to rotate. The second rack and the first rack are both arranged in an annular manner. The outer wall of the movable ring 11 is fixedly connected to a second rack engaged with the second gear 10 for driving the second gear to rotate. The inner wall of the movable ring 11 is fixedly connected to the first rack for driving the movable ring 11 to rotate. The inner bottom of the groove is rotatably connected to a connecting column 13 for driving the first gear 12 to rotate. The lower end of the connecting column 13 is fixedly sleeved with a first gear 12 engaged with the first rack for driving the first rack to rotate. The upper end of the connecting column 13 passes through the groove and is provided with an inner hexagonal groove for facilitating the user to rotate the connecting column 13 with an inner hexagonal wrench.

[0025] The first gear 12 is driven by the first tooth 11 and the second tooth 12 is driven by the second tooth 11. The second gear 12 is driven by the first tooth 11 and the second tooth 12 is driven by the second tooth 11. The second gear 10 is driven by the second tooth 11 and the second tooth 12 is driven by the second tooth 11. The worm 3 is driven by the second tooth 11 and the second tooth 12 is driven by the second tooth 11. The worm 3 is driven by the second tooth 11 and the second tooth 12 is driven by the second tooth 11. The worm 3 is driven by the second tooth 11 and the second tooth 12 is driven by the second tooth 11. The worm 3 is driven by the second tooth 11 and the second tooth 12 is driven by the second tooth 11. The worm 3 is driven by the second tooth 11 and the second tooth 12 is driven by the second tooth 11. The worm 3 is driven by the worm gear 3 and the worm gear is driven by the worm gear 3. The self-locking effect of the worm 3 and the worm gear can prevent the adjusting rod 4 from loosening. The adjusting rod 4 drives the moving block 8 through the threaded engagement, and the moving block 8 drives the clamping block 7 to move into the clamping slot, so that the positioning block 5 can be locked in position, thereby achieving the installation and fixation of the arched steel pipe body 2 and the base 1.

[0026] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A large-span hyperbolic steel beam pre-arching device, comprising an arching steel pipe body (2) and two bases (1) arranged below the arching steel pipe body, characterized in that: The lower end of the arched steel pipe body (2) is respectively abutted against the upper ends of the two bases (1); the lower end of the arched steel pipe body (2) is fixedly connected with a positioning block (5); the upper end of the base (1) is provided with a positioning groove corresponding to the positioning block (5); the lower end of the positioning block (5) slides and extends into the positioning groove; both sides of the inner side of the positioning groove are provided with a sliding groove; a moving block (8) is slidably inserted on the inner side wall of the sliding groove; the moving block (8) is fixedly connected with a clamping block (7) at one end close to the positioning block (5); both sides of the positioning block (5) are provided with a clamping groove corresponding to the clamping block (7); one end of the clamping block (7) slides and extends into the clamping groove; the other end of the moving block (8) is inserted with an adjusting rod (4); the adjusting rod (4) and the moving block (8) are threadedly connected; the end of the adjusting rod (4) away from the moving block (8) is connected to the inner side wall of the sliding groove The adjusting rod (4) is rotatably connected to the end thereof which is away from the moving block (8), and a fixed sleeve is provided with a worm gear. The inner bottom of the sliding groove is rotatably connected to a worm (3) meshed with the worm gear. The upper end of the base (1) is provided with an annular groove. The upper end of the worm (3) passes through the base (1) and is fixedly connected to a second gear (10). The second gear (10) is located in the groove. The inner bottom of the groove is rotatably connected to a movable ring (11). The outer side wall of the movable ring (11) is fixedly connected to a second rack meshed with the second gear (10). The inner side wall of the movable ring (11) is fixedly connected to a first rack. The inner bottom of the groove is rotatably connected to a connecting column (13). The lower end of the connecting column (13) is fixedly provided with a first gear (12) meshed with the first rack. The upper end of the connecting column (13) passes through the groove and is provided with an inner hexagonal groove.

2. The large-span hyperbolic steel beam pre-arching device according to claim 1, characterized in that: A fixing block (6) is fixedly embedded in the positioning block (5), and the upper end of the fixing block (6) passes through the positioning block (5) and is fixedly inserted into the arched steel pipe body (2).

3. The large-span hyperbolic steel beam pre-arching device according to claim 2, characterized in that: Both ends of the fixing block (6) are arranged in a T-shape.

4. The large-span hyperbolic steel beam pre-arching device according to claim 1, characterized in that: A guide rod (9) arranged in a 7-shape is slidably inserted at one end of the moving block (8) close to the adjusting rod (4), and an end of the guide rod (9) away from the moving block (8) is fixedly connected to the inner bottom of the slide groove.

5. The large-span hyperbolic steel beam pre-arching device according to claim 1, characterized in that: Two fixing rings are rotatably sleeved on the worm (3), and the two fixing rings are respectively fixed on the upper and lower sides of the sliding groove.

6. The large-span hyperbolic steel beam pre-arching device according to claim 1, characterized in that: The lower end of the positioning block (5) is tapered.

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