Reusable chain type rotating device and rotating method

Abstract

The present invention relates to a reusable chain-type rotating body rotation device and a rotating body method, wherein the device comprises an upper rotating disk and a lower rotating disk, wherein the upper rotating disk is rotatably arranged above the lower rotating disk; a chain is fitted on the side wall of the upper rotating disk, the first end of the chain is fixed to the side wall of the upper rotating disk by an adjustable chain fixing device, and the second end of the chain is fixed to the side wall of the upper rotating disk by a chain fixing device; a traction motor is fixedly arranged on the top of the lower rotating disk, and the output shaft on the top of the traction motor is detachably connected with a gear, and the gear is meshed with the chain. The present invention has the characteristics of being reusable, saving foundation pit space, and being able to rotate in both directions.

Description

Technical Field

[0001] The invention relates to the technical field of bridge rotation construction, and in particular to a reusable chain-type rotation device and a rotation method. Background Art

[0002] The bridge rotation construction technology is a relatively mature and widely applicable bridge construction technology, among which the horizontal rotation construction method is the most widely used. The bridge rotation construction is widely used in bridges across deep valleys and rapids, special rivers that are difficult to hoist, and across railways and highways.

[0003] However, the traction system of the general bridge horizontal rotation construction method is composed of a traction cable and a reaction seat. The traction cable is embedded in the upper turntable and the traction cable is wound around the turntable. The reaction seat is prefabricated on the lower turntable to install the continuous jack. In this traction system, the continuous jack needs to be placed horizontally, and space needs to be reserved for the traction cable behind the continuous jack during the rotation process. Therefore, this traction system needs to occupy a large amount of foundation pit space; the traction cable in this traction system is a one-time traction cable, which is cast together with the foundation after the rotation construction is completed and cannot be reused; and this traction system can only drive the rotating body to rotate in one direction. Once over-rotation occurs during the construction process, it is difficult to handle. Summary of the invention

[0004] In view of the above problems, the first object of the present invention is to provide a reusable chain-type swivel rotating device, which has the characteristics of being reusable, saving foundation pit space and being able to rotate in both directions, overcoming the shortcomings of the existing traction system that occupies a large space, cannot rotate in the opposite direction after over-rotation and the traction rope cannot be reused.

[0005] A second object of the present invention is to provide a reusable swivel method of a chain-type swivel rotating device.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] The reusable chain-type swivel rotating device described in the present invention includes an upper turntable and a lower turntable, wherein the upper turntable is rotatably arranged above the lower turntable; a chain is fitted on the side wall of the upper turntable, the first end of the chain is fixed to the side wall of the upper turntable by an adjustable chain fixing device, and the second end of the chain is fixed to the side wall of the upper turntable by a chain fixing device; a traction motor is fixedly arranged on the top of the lower turntable, and the output shaft on the top of the traction motor is detachably connected to a gear, and the gear is meshed with the chain.

[0008] The reusable chain-type swivel rotating device is preferably connected to a mounting seat at the bottom of the traction motor, and a pre-embedded motor reaction bolt is embedded in the top of the lower turntable. The pre-embedded motor reaction bolt passes through a first through hole on the mounting seat and is locked by a first nut.

[0009] The reusable chain-type swivel rotating device, preferably, the chain fixing device includes a first embedded bolt, a first cover plate with comb-shaped teeth and a second nut; four of the first embedded bolts are embedded in the side wall of the upper turntable, the four first embedded bolts are grouped in twos, and the two groups of the first embedded bolts are arranged up and down and clamp the second end of the chain in the middle; second through holes are provided at the four corners of the top of the first cover plate with comb-shaped teeth, and the first embedded bolt is locked by the second nut after passing through the second through hole, so that the first cover plate with comb-shaped teeth presses the second end of the chain.

[0010] The reusable chain-type swivel rotating device, preferably, the adjustable chain fixing device includes a second embedded bolt, a second cover plate with comb-shaped teeth, a wedge-shaped gasket and a third nut, four of the second embedded bolts are embedded in the side wall of the upper turntable, the four second embedded bolts are grouped in twos, two groups of the second embedded bolts are arranged up and down and clamp the first end of the chain in the middle; the four corners of the top of the second cover plate with comb-shaped teeth are provided with slotted holes, the second embedded bolt is passed through the slotted holes and then locked by the third nut, so that the second cover plate with comb-shaped teeth presses the first end of the chain; the second embedded bolt can move in the slotted hole along the length direction of the slotted hole to adjust the tightness of the chain; the wedge-shaped gasket is inserted into the gap between the slotted hole and the second embedded bolt.

[0011] The reusable chain-type swivel rotating device preferably has two chains, which are arranged opposite to each other on the side walls of the upper turntable, and the first end of each chain is fixed to the side wall of the upper turntable by an adjustable chain fixing device, and the second end of each chain is fixed to the side wall of the upper turntable by a chain fixing device.

[0012] The reusable chain-type swivel rotating device is preferably provided with two gears and two traction motors, each of which is detachably connected to a gear, and the two gears are respectively meshed with the two chains.

[0013] The rotating method of the reusable chain-type rotating device of the present invention comprises the following steps:

[0014] 1) Make the traction motor rotate in the opposite direction of the bridge swivel, pull the chain through the gear and drive the upper turntable to rotate, completing the swivel construction;

[0015] 2) If over-rotation occurs, the traction motor is rotated in the direction of the bridge swivel to correct the over-rotation angle;

[0016] 3) After the rotation is completed, the chain, gear, first cover plate with comb-shaped teeth, second cover plate with comb-shaped teeth, wedge-shaped gasket and traction motor are disassembled for reuse.

[0017] The present invention adopts the above technical solution, which has the following advantages:

[0018] 1) The present invention eliminates the reserved space for the reaction seat with a relatively large volume and the steel strand in front of the reaction seat, thereby reducing the volume of the rotation construction pit, saving construction costs, and being applicable to construction environments with narrow pit space;

[0019] 2) The present invention can make the bridge rotating body rotate in both directions, which can easily solve the problem of over-rotation during construction, and at the same time, the anti-over-rotation reaction seat can be eliminated, making the construction process simpler;

[0020] 3) The main components of the present invention can be connected by bolts, which is easy to install and has low processing and manufacturing costs;

[0021] 4) After the rotation construction is completed, the main components of the present invention can be dismantled and recycled, further reducing the construction cost;

[0022] 5) The chain in the present invention is applicable to turntables of different diameters, which greatly reduces the waste of materials during construction and is economical and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the top view of the structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 4 It is a front view of the chain fixing device in the present invention;

[0027] Figure 5 for Figure 4 AA section view;

[0028] Figure 6 for Figure 4 Stereoscopic image of

[0029] Figure 7 It is a front view of the adjustable chain fixing device of the present invention;

[0030] Figure 8 for Figure 7BB cross-sectional view;

[0031] Fig. 9 for Figure 7 Stereoscopic diagram.

[0032] The reference numerals in the figures are:

[0033] 1-chain; 2-gear; 3-chain fixing device; 301-first embedded bolt; 302-first cover plate with comb-shaped teeth; 303-second nut; 4-adjustable chain fixing device; 401-second embedded bolt; 402-second cover plate with comb-shaped teeth; 403-wedge-shaped gasket; 404-third nut; 5-traction motor; 6-embedded motor reaction bolt; 7-upper turntable; 8-lower turntable. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings so that the purpose, features and advantages of the present invention can be more clearly understood. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0035] like Figures 1 to 3 As shown, the reusable chain-type swivel rotating device provided by the present invention includes an upper turntable 7 and a lower turntable 8. The upper turntable 7 is rotatably arranged above the lower turntable 8. Specifically, a ball joint can be arranged between the upper turntable 7 and the lower turntable 8; a chain 1 is fitted on the side wall of the upper turntable 7, and the first end of the chain 1 is fixed to the side wall of the upper turntable 7 by an adjustable chain fixing device 4, and the second end of the chain 1 is fixed to the side wall of the upper turntable 7 by a chain fixing device 3; a traction motor 5 is fixedly arranged on the top of the lower turntable 8, and the output shaft on the top of the traction motor 5 is detachably connected to a gear 2, and the gear 2 is horizontally placed and meshed with the chain 1.

[0036] In the above embodiment, preferably, a mounting seat is connected to the bottom of the traction motor 5, and a pre-embedded motor reaction bolt 6 is embedded in the top of the lower turntable 8. The pre-embedded motor reaction bolt 6 passes through the first through hole on the mounting seat and is tightened by the first nut, thereby fixing the traction motor 5 on the lower turntable.

[0037] In the above embodiment, preferably, Figures 4 to 6As shown, the chain fixing device 3 includes a first embedded bolt 301, a first cover plate 302 with comb-shaped teeth and a second nut 303; four first embedded bolts 301 are embedded in the side wall of the upper turntable 7, and the four first embedded bolts 301 are grouped in pairs, and the two groups of first embedded bolts 301 are arranged up and down and clamp the second end of the chain 1 in the middle; second through holes are arranged at the four corners of the top of the first cover plate 302 with comb-shaped teeth, and the first embedded bolt 301 is locked by the second nut 303 after passing through the second through hole, so that the first cover plate 302 with comb-shaped teeth presses the second end of the chain 1, thereby, the second end of the chain 1 can be fixed to the side wall of the upper turntable 7.

[0038] In the above embodiment, preferably, Figures 7 to 9 As shown, the adjustable chain fixing device 4 includes a second embedded bolt 401, a second cover plate 402 with comb-shaped teeth, a wedge-shaped gasket 403 and a third nut 404. The four second embedded bolts 401 are embedded in the side wall of the upper turntable 7. The four second embedded bolts 401 are grouped in pairs. The two groups of second embedded bolts 401 are arranged up and down and clamp the first end of the chain 1 in the middle; the four corners of the top of the second cover plate 402 with comb-shaped teeth are provided with slotted holes, and the second embedded bolts 401 are arranged in pairs. After the bolt 401 passes through the slotted hole, it is locked by the third nut 404, so that the second cover plate 402 with comb-shaped teeth presses the first end of the chain 1; the second embedded bolt 401 can move in the slotted hole along the length direction of the slotted hole to adjust the tightness of the chain 1; when the chain 1 is tightened, the wedge-shaped gasket 403 is inserted into the gap between the slotted hole and the second embedded bolt 401, thereby, the first end of the chain 1 can be fixed on the side wall of the upper turntable 7, and the tightness of the chain can be adjusted.

[0039] In the above embodiment, preferably, there are two chains 1, and the two chains 1 are arranged opposite to each other on the side wall of the upper turntable 7, and the first end of each chain 1 is fixed to the side wall of the upper turntable 7 through an adjustable chain fixing device 4, and the second end of each chain 1 is fixed to the side wall of the upper turntable 7 through a chain fixing device 3.

[0040] Correspondingly, there are two gears 2 and two traction motors 5, each traction motor 5 is detachably connected to a gear 2, and the two gears 2 are respectively engaged with the two chains 1. Thus, the upper turntable 1 can be rotated at both sides at the same time.

[0041] The present invention also provides a rotation method of a reusable chain-type rotating device, comprising the following steps:

[0042] 1) Make the traction motor rotate in the opposite direction of the bridge swivel, pull the chain through the gear and drive the upper turntable to rotate, completing the swivel construction;

[0043] 2) If over-rotation occurs, the traction motor is rotated in the direction of the bridge swivel to correct the over-rotation angle;

[0044] 3) After the rotation is completed, the chain, gear, first cover plate with comb-shaped teeth, second cover plate with comb-shaped teeth, wedge-shaped gasket and traction motor are disassembled for reuse.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A reusable chain-type rotating device, characterized in that: It comprises an upper turntable and a lower turntable, wherein the upper turntable is rotatably arranged above the lower turntable; A chain is fitted on the side wall of the upper turntable, a first end of the chain is fixed to the side wall of the upper turntable through an adjustable chain fixing device, and a second end of the chain is fixed to the side wall of the upper turntable through the chain fixing device; A traction motor is fixedly arranged on the top of the lower turntable, and a gear is detachably connected to the output shaft on the top of the traction motor, and the gear is meshed with the chain; The adjustable chain fixing device comprises a second embedded bolt, a second cover plate with comb-shaped teeth, a wedge-shaped gasket and a third nut, four of the second embedded bolts are embedded in the side wall of the upper turntable, two of the four second embedded bolts form a group, two groups of the second embedded bolts are arranged up and down and clamp the first end of the chain in the middle; the four corners of the top of the second cover plate with comb-shaped teeth are provided with slotted holes, the second embedded bolts pass through the slotted holes and are locked by the third nut, so that the second cover plate with comb-shaped teeth presses the first end of the chain; The second embedded bolt can move in the slotted hole along the length direction of the slotted hole to adjust the tightness of the chain; The wedge-shaped gasket is inserted into the gap between the slotted hole and the second embedded bolt; The chain fixing device comprises a first embedded bolt, a first cover plate with comb-shaped teeth and a second nut; Four of the first embedded bolts are embedded in the side wall of the upper turntable, and the four first embedded bolts form a group of two. The two groups of the first embedded bolts are arranged up and down and clamp the second end of the chain in the middle; second through holes are arranged at the four corners of the top of the first cover plate with comb-shaped teeth, and the first embedded bolts are passed through the second through holes and then locked by the second nut, so that the first cover plate with comb-shaped teeth presses the second end of the chain.

2. The reusable chain-type swivel rotating device according to claim 1, characterized in that: A mounting seat is connected to the bottom of the traction motor, and a pre-embedded motor reaction bolt is embedded in the top of the lower turntable. The pre-embedded motor reaction bolt passes through a first through hole on the mounting seat and is locked by a first nut.

3. The reusable chain-type swivel rotating device according to claim 1, characterized in that: There are two chains, which are arranged opposite to each other on the side walls of the upper turntable. The first end of each chain is fixed to the side wall of the upper turntable through an adjustable chain fixing device, and the second end of each chain is fixed to the side wall of the upper turntable through a chain fixing device.

4. The reusable chain-type swivel rotating device according to claim 3, characterized in that: There are two gears and two traction motors respectively, each traction motor is detachably connected to a gear, and the two gears are respectively engaged with the two chains.

5. A rotation method based on the reusable chain-type rotating device according to any one of claims 1 to 4, characterized in that: The steps include: 1) Make the traction motor rotate in the opposite direction of the bridge swivel, pull the chain through the gears and drive the upper turntable to rotate, completing the swivel construction; 2) If over-rotation occurs, the traction motor is rotated in the direction of the bridge swivel to correct the over-rotation angle; 3) After the rotation is completed, the chain, gear, first cover plate with comb teeth, second cover plate with comb teeth, wedge-shaped gasket and traction motor are disassembled for reuse.

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