CN219410582U

CN219410582U - Counterweight device capable of adjusting bending moment

Info

Publication number: CN219410582U
Application number: CN202320554532.4U
Authority: CN
Inventors: 张静华; 史洪涛; 吴高南; 唐亮; 熊园; 熊建漓
Original assignee: Central and Southern China Municipal Engineering Design and Research Institute Co Ltd
Current assignee: Central and Southern China Municipal Engineering Design and Research Institute Co Ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-07-25
Anticipated expiration: 2033-03-16

Abstract

The utility model belongs to the technical field of swivel bridges and discloses a counterweight device capable of adjusting bending moment, which comprises a bridge, wherein the middle part of the bottom surface of the bridge is fixedly connected with a bridge pier, the bottom of the bridge pier is fixedly provided with a swivel system, the bottom of the swivel system is fixedly provided with a fixed base, and the top surface of the bridge is provided with an adjusting mechanism.

Description

Counterweight device capable of adjusting bending moment

Technical Field

The utility model relates to the technical field of swivel bridges, in particular to a counterweight device capable of adjusting bending moment.

Background

The swivel bridge is a bridge constructed by adopting a swivel method, the swivel construction of the bridge is a construction method that a bridge structure is manufactured (poured or spliced) at a non-design axis position and then positioned by a swivel, the most critical device in the construction method is a swivel system, the swivel system comprises a lower turntable, an upper turntable, a spherical hinge, a slideway and a traction system, the swivel process generally uses a jack to draw a traction rope to form a rotary couple so as to realize the swivel, and at present, bending moment adjustment is needed in actual swivel construction, and the existing method mainly comprises the step of adding a device block on the bridge to change stress so as to balance the bending moment.

Although the existing unbalanced bending moment of the swivel bridge is counteracted by the counter weight, a plurality of uncertain factors can still be encountered in the swivel process, so that a new unbalanced bending moment is generated, the counter weight is added at the moment, the stress of the bridge pier is changed, the bending moment is balanced, the engineering progress is affected, and if the engineering progress is not adjusted in time, the construction accident is easy to occur due to the smaller bending moment.

Disclosure of Invention

Aiming at the defects, the utility model provides the counterweight device capable of adjusting the bending moment, which can realize the advantages of high safety performance and strong practicability.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a counter weight device of adjustable moment of flexure, includes the bridge, the middle part fixedly connected with pier of bridge bottom surface, the bottom fixed mounting of pier has the system of turning, the bottom of turning the system has set firmly fixed base, the top surface of bridge is equipped with adjustment mechanism, be equipped with the balancing weight on the adjustment mechanism, the system of turning is including spike and slide steel sheet, install the range finding emission module on the bottom of spike, install the range finding receiving module on the slide steel sheet, the output of range finding emission module is towards the input of range finding receiving module, range finding emission module and range finding receiving module are used for detecting the interval between range finding emission module and the range finding receiving module.

Further, adjustment mechanism includes fixed frame, install the motor on the fixed frame, fixedly connected with carousel piece on the output shaft of motor, the surface swing joint of carousel piece has the spacing ring, fixedly connected with removes the seat on the surface of spacing ring, the carousel piece is connected with first transfer line through the pivot transmission, first transfer line is connected with the second transfer line through the pivot transmission, the second transfer line is connected with the third transfer line through the pivot transmission, the third transfer line passes through the fixed axle and installs on fixed frame, the third transfer line is connected with the fourth transfer line through the pivot transmission, the fourth transfer line is connected with the connecting seat through the pivot transmission, connecting seat side fixedly connected with sliding block, threaded connection has the balancing weight on the sliding block, the bottom swing joint of sliding block has the removal seat, fixedly connected with organism in the fixed frame.

Further, the balancing weight comprises a balancing weight main body, a connecting rod is arranged on the balancing weight main body, and a sliding block is connected to the outer surface of the connecting rod in a threaded mode.

Further, the number of the balancing weights is four, and the balancing weights are of detachable structures.

Further, the specific model of the ranging transmitting module and the ranging receiving module is HC-SR04 ultrasonic ranging module.

Further, the bottom of the outer surface of the movable seat is movably sleeved with a fixed frame, and the bottom of the fixed frame is fixedly arranged on the bridge through bolts.

Further, the connection part of the motor and the turntable block is positioned on a circle with a radius which is one half of the cross-section circle of the turntable block.

After the technical scheme is adopted, compared with the prior art, the utility model has the following advantages:

the utility model has the advantages that the distance measuring devices are arranged at the bottoms of the supporting feet and on the slideway steel plates through the adjusting mechanism, the balancing weights and the like, the distance between the supporting feet and the slideway steel plates can be monitored in real time in the turning process, the distance can judge the longitudinal unbalanced bending moment of the bridge in the turning process, then the adjusting mechanism which can change the azimuth of the bridge is arranged on the balancing weights, and the stress reaching the turning system is changed by moving the balancing weights, so that the distance between the supporting feet and the slideway steel plates is in a dynamic balance, the dynamic balance of the bending moment is ensured, the construction progress is ensured, and the safety accidents caused by the unbalanced bending moment are avoided.

The utility model will now be described in detail with reference to the drawings and examples.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is an exploded view of the overall structure of the present utility model;

FIG. 3 is a schematic view of an adjusting mechanism according to the present utility model;

FIG. 4 is an exploded view of the structure of the adjusting mechanism of the present utility model;

FIG. 5 is a schematic diagram of a weight according to the present utility model;

fig. 6 is a schematic view of a partial explosion in the structure of the swivel system of the utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1. a bridge; 2. an adjusting mechanism; 201. a fixed frame; 202. a motor; 203. a limiting ring; 204. a turntable block; 205. a first transmission rod; 206. a second transmission rod; 207. a third transmission rod; 208. a fourth transmission rod; 209. a connecting seat; 210. a sliding block; 211. a body; 212. a movable seat; 3. balancing weight; 301. a counterweight body; 302. a connecting rod; 4. bridge piers; 5. a swivel system; 501. a slideway steel plate; 502. supporting feet; 6. a fixed base; 7. a ranging transmitting module; 8. and a ranging receiving module.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

As shown in fig. 1 to 2, the utility model provides a counterweight device capable of adjusting bending moment, which comprises a bridge 1, wherein a bridge pier 4 is fixedly connected to the middle part of the bottom surface of the bridge 1, a swivel system 5 is fixedly arranged at the bottom of the bridge pier 4, a fixed base 6 is fixedly arranged at the bottom of the swivel system 5, an adjusting mechanism 2 is arranged on the top surface of the bridge 1, a counterweight block 3 is arranged on the adjusting mechanism 2, the swivel system 5 comprises a supporting foot 502 and a slideway steel plate 501, a ranging transmitting module 7 is arranged on the bottom of the supporting foot 502, a ranging receiving module 8 is arranged on the slideway steel plate 501, the output end of the ranging transmitting module 7 faces the input end of the ranging receiving module 8, the ranging transmitting module 7 and the ranging receiving module 8 are used for detecting the distance between the ranging transmitting module 7 and the ranging receiving module 8, the distance between the supporting foot 502 and the slideway steel plate 501 is monitored in real time in the swivel process of the swivel bridge, and the longitudinal unbalanced bending moment of the bridge 1 in the swivel process can be judged through the distance change, so that the direction of the adjusting mechanism 2 is controlled to adjust the bending moment in real time, and the bending moment is subjected to the stress change system 5 in real time, so that balance is obtained.

As shown in fig. 3 to 4, the adjusting mechanism 2 comprises a fixed frame 201, a motor 202 is installed on the fixed frame 201, a turntable block 204 is fixedly connected to an output shaft of the motor 202, a limiting ring 203 is movably connected to an outer surface of the turntable block 204, a movable seat 212 is fixedly connected to an outer surface of the limiting ring 203, the turntable block 204 is connected with a first transmission rod 205 through a rotating shaft transmission, the first transmission rod 205 is connected with a second transmission rod 206 through a rotating shaft transmission, the second transmission rod 206 is connected with a third transmission rod 207 through a rotating shaft transmission, the third transmission rod 207 is installed on the fixed frame 201 through a fixed shaft, the third transmission rod 207 is connected with a fourth transmission rod 208 through a rotating shaft transmission, the fourth transmission rod 208 is connected with a connecting seat 209 through a rotating shaft transmission, a sliding block 210 is fixedly connected to a side surface of the connecting seat 209, a balancing weight 3 is screwed on the sliding block 210, the bottom of the sliding block 210 is movably connected with a moving seat 212, the fixed frame 201 is fixedly connected with an organism 211, the rotating disc block 204 is driven by a motor 202 to rotate, the rotating disc block 204 drives a second transmission rod 206 to move, the second transmission rod 206 pulls a third transmission rod 207 to swing, under the limit of a fixed shaft on the fixed frame 201 to the third transmission rod 207, the third transmission rod 207 pulls a fourth transmission rod 208 to move, the connecting seat 209 is driven to move, the sliding block 210 moves left and right, the rotation of the rotating disc block 204 drives a limiting ring 203 to move up and down, then the moving seat 212 moves up and down, so that the balancing weight 3 also moves up and down, the change of the direction of the balancing weight 3 is realized, the gravity point of the whole stressed on the rotating body system 5 is changed, the counter stress is also changed, the distance between the supporting leg and the slideway is in a dynamic balance, dynamic bending moment balance is realized.

As shown in fig. 5, the counterweight 3 includes a counterweight main body 301, a connecting rod 302 is disposed on the counterweight main body 301, and a sliding block 210 is screwed on an outer surface of the connecting rod 302, so that the counterweight main body 301 is conveniently and fixedly installed, and the counterweights 3 with different counterweights are conveniently used, so that stress is better adjusted, and bending moment balance is ensured in a rotating process.

As shown in fig. 1 to 5, the number of the balancing weights 3 is four, the balancing weights 3 are of a detachable structure, the specific model of the ranging transmitting module 7 and the ranging receiving module 8 is an HC-SR04 ultrasonic ranging module, the bottom of the outer surface of the movable seat 212 is movably sleeved with a fixed frame 201, the bottom of the fixed frame 201 is fixedly arranged on the bridge 1 through bolts, the connection part of the motor 202 and the turntable block 204 is positioned on a half radius circle of the section circle of the turntable block 204, and the connection part of the motor 202 and the turntable block 204 is positioned on a half radius circle of the section circle of the turntable block 204, so that when the motor 202 works to drive the turntable block 204 to rotate, the limiting ring 203 is conveniently moved up and down, and then the movable seat 212 is moved up and down, thereby changing the height of the balancing weights 3, so that the stress on the balancing weights 3 is obviously changed, and the balance of bending moment is ensured.

The working principle of the utility model is as follows:

during operation, the ranging receiving module 8 and the ranging transmitting module 7 which are positioned on the swivel system 5, the position of the supporting foot 502 and the position of the slideway steel plate 501 are monitored in real time, when the position of the supporting foot 502 and the slideway steel plate 501 is deviated, the position of the balancing weight 3 on the adjusting mechanism 2 is changed, the stress of the swivel system 5 which is structurally applied to the swivel system 5 is adjusted, the gravity center position is low, the situation that the supporting foot 502 is pulled back to the normal position of the slideway 501 is realized, in the normal operating state, the adjusting mechanism 2 works, the turntable block 204 drives the second transmission rod 206 to move, the second transmission rod 206 pulls the third transmission rod 207 to swing, the third transmission rod 207 is driven to move by the fixed shaft on the fixed frame 201, the fourth transmission rod 208 is driven to move by the fixed shaft on the fixed frame 201, the connecting seat 209 is driven to move left and right by the sliding block 210, the limit ring 203 is driven by the rotation of the turntable block 204 to move up and down, the movable seat 212 is also driven to move up and down, the balancing weight 3 is also driven to move up and down, the situation that the whole balancing weight 3 is changed in the azimuth, the stress of the whole is changed, the stress of the turntable system is driven to change the gravity center of the turntable system to the stress is also changed, and the dynamic balance between the supporting foot and the stress of the slideway system is realized.

The foregoing is illustrative of the best mode of carrying out the utility model, and is not presented in any detail as is known to those of ordinary skill in the art. The protection scope of the utility model is defined by the claims, and any equivalent transformation based on the technical teaching of the utility model is also within the protection scope of the utility model.

Claims

1. The utility model provides a counter weight device of adjustable moment of flexure, its characterized in that includes bridge (1), the middle part fixedly connected with pier (4) of bridge (1) bottom surface, the bottom fixed mounting of pier (4) has swivel system (5), the bottom of swivel system (5) has set firmly fixed base (6), be equipped with adjustment mechanism (2) of the top surface of bridge (1), be equipped with balancing weight (3) on adjustment mechanism (2), swivel system (5) are including spike (502) and slide steel sheet (501), install range finding emission module (7) on the bottom of spike (502), install range finding receiving module (8) on slide steel sheet (501), the output of range finding emission module (7) is towards the input of range finding receiving module (8), range finding emission module (7) and range finding receiving module (8) are used for detecting the interval between range finding emission module (7) and the range finding receiving module (8);

the adjusting mechanism (2) comprises a fixed frame (201), a motor (202) is installed on the fixed frame (201), a turntable block (204) is fixedly connected to an output shaft of the motor (202), a limiting ring (203) is movably connected to the outer surface of the turntable block (204), a movable seat (212) is fixedly connected to the outer surface of the limiting ring (203), a first transmission rod (205) is connected to the turntable block (204) through rotating shaft transmission, a second transmission rod (206) is connected to the first transmission rod (205) through rotating shaft transmission, a third transmission rod (207) is connected to the second transmission rod (206) through rotating shaft transmission, the third transmission rod (207) is installed on the fixed frame (201) through a fixed shaft, a fourth transmission rod (208) is connected to the third transmission rod (207) through rotating shaft transmission, a connecting seat (209) is fixedly connected to the side face of the connecting seat, a sliding block (210) is connected to the sliding block (210) through rotating shaft transmission, a balancing weight (3) is connected to the sliding block (210), and the bottom of the sliding block (210) is fixedly connected to the movable seat (211).

2. The bending moment adjustable counterweight device according to claim 1, wherein the counterweight (3) comprises a counterweight body (301), a connecting rod (302) is arranged on the counterweight body (301), and a sliding block (210) is connected to the outer surface of the connecting rod (302) in a threaded manner.

3. The bending moment adjustable counterweight device according to claim 1, wherein the number of the counterweights (3) is four, and the counterweights (3) are detachable structures.

4. The bending moment adjustable counterweight device according to claim 1, wherein the specific model of the ranging transmitting module (7) and the ranging receiving module (8) is an HC-SR04 ultrasonic ranging module.

5. The balance weight device with adjustable bending moment according to claim 1, wherein the bottom of the outer surface of the movable seat (212) is movably sleeved with a fixed frame (201), and the bottom of the fixed frame (201) is fixedly arranged on the bridge (1) through bolts.

6. The bending moment adjustable counterweight device according to claim 1, wherein the connection of the motor (202) and the turntable block (204) is located on a radius of one half of a cross-sectional circle of the turntable block (204).