CN211142855U

CN211142855U - Convenient bridge reinforcement auxiliary device who lifts by crane

Info

Publication number: CN211142855U
Application number: CN201922037774.2U
Authority: CN
Inventors: 李铮; 张明金; 杨忠; 肖军; 向中富; 周霜林; 李庆达; 余佳昕
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-07-31
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses a convenient bridge reinforcement auxiliary device who lifts by crane, including being used for installing the supporting platform on the simple girder bridge, the rotation is connected with horizontal turntable in the supporting platform up end, and horizontal turntable up end is fixed with U type support, and U type support top is equipped with two-way scalable davit, and two-way scalable davit one end is equipped with girder end lifting hook, the other end is equipped with weighs the end lifting hook, weighs the end lifting hook and is used for hanging and weighs, the lower terminal surface of two-way scalable davit is connected in U type support through the round pin hub rotation. Compared with the prior art, the utility model discloses a lever principle has reduced the required external force of hanging beam, compares with current equipment and can reduce the load of hanging beam to current bridge to because it can be installed in pier department, equipment can not produce extra moment of flexure to the bridge, also can not make both sides roof beam body downwarp in the hanging beam.

Description

Convenient bridge reinforcement auxiliary device who lifts by crane

Technical Field

The utility model relates to a restoration and the reinforced (rfd) equipment field of bridge, especially a convenient bridge reinforcement auxiliary device who lifts by crane.

Background

As the traffic pressure in China is gradually increased and the service life of the existing bridge is continuously improved, a large number of old bridges and dangerous bridges gradually appear in China, and the maintenance and the reinforcement of the bridge gradually become hot spots. The existing bridge has a plurality of reinforcing modes, such as adhering reinforcing materials, increasing the cross section of a bridge structure, adding auxiliary reinforcing members and the like, wherein most reinforcing methods can only stabilize the bearing capacity of the bridge to live load and do not help the resistance of the beam body to dead weight. And the dead weight of the bridge is increased after the reinforcing structure is added, and the dead weight load occupies the maximum proportion in various loads of the bridge. In order to make the reinforcing measures for the existing bridge more effectively play a role, the reinforcing measures can not only bear live load of the bridge, but also make the bridge arch upwards (unload) in advance when reinforcing the bridge and then reinforce the bridge, and release dead weight after reinforcing, so that the reinforcing structure can bear live load and dead weight load of the bridge.

Therefore, it is desired to provide a device that can hoist the bridge in advance and partially unload the dead weight of the bridge.

Disclosure of Invention

The utility model discloses a solve exist among the prior art not enough, provide a convenient bridge that lifts by crane and consolidate auxiliary device.

In order to achieve the purpose, the utility model is implemented according to the following technical scheme:

the utility model provides a convenient bridge reinforcement auxiliary device who lifts by crane, is including being used for installing the supporting platform on the simple girder bridge, the rotation is connected with horizontal turntable in the supporting platform up end, and horizontal turntable up end is fixed with U type support, and U type support top is equipped with two-way scalable davit, and two-way scalable davit one end is equipped with girder end lifting hook, the other end is equipped with ballast end lifting hook, ballast end lifting hook is used for hanging ballast, the lower terminal surface of two-way scalable davit rotates through the round pin axle and connects in U type support.

Furthermore, the bidirectional telescopic suspension arm comprises an outer sleeve, a telescopic main beam end inner sleeve is assembled in one end of the outer sleeve, a telescopic weight end inner sleeve is assembled in the other end of the outer sleeve, two push rod motors are fixed in the outer sleeve, the tail end of a push rod of one push rod motor is fixedly connected with one end of the main beam end inner sleeve, and a main beam end hook is arranged at the other end of the main beam end inner sleeve; the tail end of a push rod of the other push rod motor is fixedly connected with one end of the inner sleeve at the weight end, and the lifting hook at the weight end is arranged at the other end of the inner sleeve at the weight end.

Further, the maximum telescopic length of the inner sleeve at the weight end is greater than that of the inner sleeve at the main beam end.

Furthermore, a pin shaft seat is fixed at the center of the outer sleeve or at the bottom of the outer sleeve close to the main beam end lifting hook and is rotatably connected in the U-shaped support through a pin shaft.

Preferably, the two push rod motors are symmetrically fixed in the outer sleeve above the pin shaft.

Furthermore, four hydraulic lifting legs are arranged on the lower end face of the supporting platform.

Compared with the prior art, the utility model discloses a lever principle has reduced the required external force of hanging beam, compares with current equipment and can reduce the load of hanging beam to current bridge to because it can be installed in pier department, equipment can not produce extra moment of flexure to the bridge, also can not make both sides roof beam body downwarp in the hanging beam.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the operation of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. The specific embodiments described herein are merely illustrative of the invention and do not limit the invention.

As shown in fig. 1, the convenient and fast bridge reinforcing auxiliary device for hoisting of the embodiment comprises a supporting platform 1 for being installed on a simply supported bridge, a horizontal turntable 2 is rotatably connected in the upper end face of the supporting platform 1, a U-shaped support 3 is fixed on the upper end face of the horizontal turntable 2, a bidirectional telescopic boom is arranged above the U-shaped support 3, one end of the bidirectional telescopic boom is provided with a main beam end hook 10, the other end of the bidirectional telescopic boom is provided with a ballast end hook 11, the ballast end hook 11 is used for hanging ballast, the lower end face of the bidirectional telescopic boom is rotatably connected in the U-shaped support 3 through a pin shaft 5, the bidirectional telescopic boom comprises a bag 6, one end of an outer sleeve 6 is internally provided with a telescopic main beam end inner sleeve 8, the other end of the outer sleeve 6 is internally provided with a telescopic ballast end inner sleeve 9, and two push rod motors 7, the two push rod motors 7 are symmetrically fixed in the outer sleeve 6 above the pin shaft 5, the tail end of a push rod of one push rod motor 7 is fixedly connected with one end of the main beam end inner sleeve 8, and the main beam end hook 10 is installed at the other end of the main beam end inner sleeve 8; the tail end of a push rod of the other push rod motor 7 is fixedly connected with one end of an inner sleeve 9 at the weight end, and a hook 11 at the weight end is arranged at the other end of the inner sleeve 9 at the weight end. The bidirectional telescopic suspension arm and the U-shaped support 3 form a lever.

The device utilizes the lever principle, takes a pier or an adjacent non-damaged girder body as a fulcrum to lift the damaged girder to apply pre-camber, and reduces the external force required for lifting the bridge by increasing the moment arm.

In the actual manufacturing process, a pin shaft seat 4 is fixed at the center of the outer sleeve 6 or at the bottom of the outer sleeve 6 close to the main beam end lifting hook 10, the pin shaft seat 4 is rotatably connected in the U-shaped support 3 through a pin shaft 5, but the maximum telescopic length of the inner sleeve 9 at the weight end is larger than that of the inner sleeve 8 at the main beam end, and the whole lever is mainly ensured to be a labor-saving lever; of course, it is preferable that the bottom of the outer sleeve 6 close to the main beam end hook 10 is fixed with the pin shaft seat 4, so that the pin shaft seat itself is a labor-saving lever, and then the extension length of the inner sleeve 9 at the weight end is controlled to be larger than that of the inner sleeve 8 at the main beam end, so that the lever is more labor-saving, and the main beam can be lifted by more weight at the weight end.

In the practical use process, in order to facilitate the installation of the whole device and the lifting or lowering of the height of the supporting platform 1, four hydraulic lifting legs 12 are arranged on the lower end face of the supporting platform 1.

Before the whole set of device is installed, firstly, relevant calculation is carried out before equipment is installed, the required unloading weight of a damaged beam is known, field investigation is carried out, the position of the damaged beam, the condition of a surrounding beam body and the environmental characteristics of a bridge site area are determined, the installation position of the equipment is determined, the installed equipment is ensured not to damage the damaged beam, the equipment is recommended to be installed as close to a lifting point as possible, and the moment arm of the main beam end is reduced. After the installation position of the equipment is determined, the equipment can be installed, when the suspension arm is installed, the main beam end inner sleeve 8 is stretched to the position of the damaged beam through the push rod motor, the damaged beam is connected with the main beam end lifting hook 10, then the weight is installed on the weight end lifting hook 11, the height of the supporting platform 1 is lifted through the hydraulic steel legs, so that the height of the bidirectional telescopic suspension arm is increased, the weight end inner sleeve 9 is driven by the push rod motor to gradually extend to increase the external moment, and the weight is stopped until the damaged beam reaches the preset unloading degree; the equipment can adapt to various environmental characteristics through the horizontal rotating shaft and the steel leg capable of lifting the height, and external force required by the hanging beam is reduced through the lever principle.

The technical scheme of the utility model is not limited to the restriction of above-mentioned specific embodiment, all according to the utility model discloses a technical scheme makes technical deformation, all falls into within the protection scope of the utility model.

Claims

1. The utility model provides a convenient bridge reinforcement auxiliary device who lifts by crane, is including being used for installing the supporting platform on a simple girder bridge, its characterized in that, the rotation is connected with horizontal rotary table in the supporting platform up end, and horizontal rotary table up end is fixed with U type support, and U type support top is equipped with two-way scalable davit, and two-way scalable davit one end is equipped with girder end lifting hook, the other end is equipped with and weighs the end lifting hook, weigh the end lifting hook and be used for hanging and weigh, the lower terminal surface of two-way scalable davit is connected in U type support through the round pin hub rotation.

2. The convenient and fast lifting bridge reinforcing auxiliary device according to claim 1, characterized in that: the bidirectional telescopic suspension arm comprises an outer sleeve, a telescopic main beam end inner sleeve is assembled in one end of the outer sleeve, a telescopic weight end inner sleeve is assembled in the other end of the outer sleeve, two push rod motors are fixed in the outer sleeve, the tail end of a push rod of one push rod motor is fixedly connected with one end of the main beam end inner sleeve, and a main beam end hook is arranged at the other end of the main beam end inner sleeve; the tail end of a push rod of the other push rod motor is fixedly connected with one end of the inner sleeve at the weight end, and the lifting hook at the weight end is arranged at the other end of the inner sleeve at the weight end.

3. The convenient and fast lifting bridge reinforcing auxiliary device according to claim 1, characterized in that: the maximum telescopic length of the inner sleeve at the weight pressing end is greater than that of the inner sleeve at the main beam end.

4. The convenient and fast lifting bridge reinforcing auxiliary device according to claim 2, characterized in that: and a pin shaft seat is fixed at the center of the outer sleeve or at the bottom of the outer sleeve close to the main beam end lifting hook and is rotatably connected in the U-shaped support through a pin shaft.

5. The convenient and fast lifting bridge reinforcing auxiliary device according to claim 4, characterized in that: and the two push rod motors are symmetrically fixed in the outer sleeve above the pin shaft.

6. The convenient and fast lifting bridge reinforcing auxiliary device according to any one of claims 1 to 5, characterized in that: and the lower end surface of the supporting platform is provided with four hydraulic lifting legs.