CN102494861A - Operating device for heavy hammer for impact vibration test of bridge substructure - Google Patents

Abstract

The invention discloses a heavy hammer operating device for the impact vibration test of the lower structure of a bridge. There is a force-bearing beam, a lifting device is installed on the force-bearing beam, and a heavy hammer is hoisted at the end of the lifting device; a connecting pipe is set at the junction of the movable sleeve rod and the sleeve column, and a balance bar is connected outside the connecting pipe. The lifting device includes a driving drum and a fixed pulley installed at both ends of the stressed beam, and a fixed pulley, a steel wire rope and a movable pulley in the middle of the stressed beam. The device can facilitate operations such as lifting, lowering and transferring the impact vibration test weight, saving manpower, improving efficiency and shortening test time.

Description

Hammer operating device for impact vibration test of bridge substructure

technical field

The invention relates to the field of bridge engineering technical equipment, in particular, the invention relates to a heavy hammer operating device which is convenient for carrying out the impact vibration test of the lower structure of the bridge.

Background technique

The shock vibration test method is a new method developed in recent years to evaluate the health status of the bridge substructure. Its basic principle is to use a heavy hammer to impact the side of the bridge pier laterally to test its velocity or acceleration dynamic response. Through the response frequency domain amplitude spectrum and The phase spectrum is used to comprehensively determine its natural frequency, and then the soundness index is used to judge whether there is a disease.

For railway bridges, the heavy hammer is generally hung on the crossbar of the bridge ladder or on the guardrail; for highway bridges, the heavy hammer is generally hung on the guardrail. The weight of the hammer used in the impact vibration test is about 30kg. The lowering, lifting and transferring of the hammer are all done by manpower, requiring at least two workers, which consumes a lot of energy, low efficiency and long operation time. The purpose of the present invention is to establish a heavy hammer operating device dedicated to the impact vibration test of the lower structure of the bridge, which can mechanize lifting, lowering and transferring the heavy hammer, thereby reducing manpower consumption, improving efficiency, shortening test time, and improving use safety.

The present invention is proposed aiming at the above-mentioned deficiencies existing in the prior art.

Contents of the invention

The technical problem that the present invention aims to solve is that the impact vibration test of the existing bridge substructure adopts manual operation, which consumes a lot of physical strength, has low efficiency, and takes a long time to operate. In view of the problems existing in the prior art, the purpose of the present invention is to provide a convenient, efficient, safe and reliable hammer operating device for the impact vibration test of the bridge substructure.

In order to achieve the purpose of the above invention, the technical solution provided by the present invention is: a bridge substructure impact vibration test weight operating device, including a base, a sleeve column is arranged on the base, and one end of a movable sleeve rod is inserted into the aforementioned sleeve In the column, the other end of the movable sleeve rod is equipped with a stressed beam, and a lifting device is installed on the stressed beam, and a heavy hammer is hoisted at the end of the lifting device; A balance bar is connected externally to the pipe.

The lifting device includes a driving drum and a fixed pulley installed at both ends of the stressed beam, a fixed pulley, a steel wire rope and a movable pulley in the middle of the stressed beam.

The drive reel is provided with an anti-rotation device.

The stressed beam is fixed on the movable sleeve rod through a mounting sleeve.

The other end of the balance bar is provided with a seat, the lower end of the seat is provided with a force bar, and the end of the force bar is equipped with a universal wheel to contact the ground.

The weight is also provided with a pull ring.

It also includes a heavy hammer operating rod, and the end of the heavy hammer operating rod is provided with a split ring.

A fixed sleeve is arranged on the base, and the sleeve column is installed on the fixed sleeve.

The base is provided with a fixed support for placing the weight.

The lower end of the base is equipped with directional wheels and universal wheels.

The beneficial effects of the invention are: the device can conveniently carry out operations such as lifting, lowering and transferring the impact vibration test weight, saves manpower, improves efficiency and shortens test time.

Description of drawings

A more complete and better understanding of the invention, and many of its attendant advantages, will readily be learned by reference to the following detailed description when considered in conjunction with the accompanying drawings, but the accompanying drawings illustrated herein are intended to provide a further understanding of the invention and constitute A part of the present invention, the exemplary embodiment of the present invention and its description are used to explain the present invention, and do not constitute an improper limitation of the present invention, wherein:

Fig. 1 is a schematic diagram of the hammer operating device for the impact vibration test of the bridge substructure of the present invention.

Detailed ways

Embodiment of the present invention is described below in conjunction with Fig. 1, bridge substructure impact vibration test weight operating device of the present invention, comprises base 1, and directional wheel 14 and universal wheel 15 are installed on the lower end of base 1. There is a fixed sleeve 12 on the base 1, the sleeve column 2 is installed on the fixed sleeve 12, one end of the movable sleeve rod 3 is inserted into the aforementioned sleeve column 2, and the other end of the movable sleeve rod 3 is installed with a stressed beam 4. The stressed beam 4 is fixed on the movable sleeve rod 3 through a mounting sleeve 41; a lifting device is installed on the stressed beam 4, and the lifting device includes a driving drum 7 and a fixed pulley 9 installed at both ends of the stressed beam 4, And the fixed pulley 91 in the middle part of the stressed beam 4, the steel rope 8 and the movable pulley 10. The end of wire rope 8 is hoisted with a heavy hammer 16 by moving pulley 10; There is also a fixed support 13 on the base 1 for placing the weight 16. When the weight needs to be moved to the next pier, the weight 16 is raised to a height higher than the bridge guardrail by the lifting device, and then it is lowered to the base 1 with human assistance. On the fixed supporting bracket 13 in the center, then the fixed lock of the universal wheel 15 is opened, and the whole device is promoted to move forward.

An anti-rotation device is provided on the drive reel 7 to prevent the drive reel 7 from rolling during use. The driving drum 7 can adopt a manual gear transmission mechanism, and the movable pulley 10 can also save half of the force, so the operator can easily operate the lifting device to lift and lower the weight 16; when the driving drum 7 winds the steel wire rope 8 After the heavy hammer 16 is lowered to an appropriate height, the anti-rotation device can be opened to prevent the drive reel 7 from reversing and avoid the sudden drop of the weight 16; after the impact operation is completed, the anti-rotation device is unlocked, and the drive reel 7 is reversely rotated. The heavy hammer 16 can be lifted.

The other end of the balance bar 5 is provided with a seat 51, and the lower end of the seat 51 is provided with a force bar 52, and the end of the force bar 52 is equipped with a universal wheel 53 to contact the ground.

The heavy hammer 16 is also provided with a pull ring 11 and also includes a heavy hammer operating rod 6 , and a split ring 61 is provided at the end of the heavy hammer operating rod 6 . The heavy hammer operating rod 6 is used for the water surface or the place where it is not suitable to stand under the bridge. The steel wire rope 8 is first pushed out with the operating rod 6 with the split ring 61, and then pulled back by force, thereby driving the heavy hammer 16 to impact the bridge pier, and the experiment is carried out; Ring 11 is used for the place that can stand under the bridge, and pull ring 11 is fastened a stay rope and can carry out experiment.

The specific work process of the present embodiment is described as follows:

As shown in Figure 1, during the test, these independent components and weights were first hoisted on the sidewalk of the bridge, and then the operating device was assembled and the weight was operated according to the following steps:

(1) Lock the universal wheel 15, insert the sleeve column 2 into the fixing sleeve 12, and fix the two with screws;

(2) The guardrails of different bridges have different heights, so in order to make the weight 16 pass over the guardrails conveniently, the height of the stressed beam 4 needs to be determined by adjusting the height of the columns 3 . Insert the movable sleeve rod 3 into the sleeve column 2 and adjust it to an appropriate height, and fix it with bolts;

(3) Set the connecting pipe 17 at the end of the balance bar 5 on the movable sleeve rod 3, make it parallel to the guardrail, and fix it with bolts;

(4) Install the stressed beam 4 with the sleeve 41 on the movable sleeve rod 3 so that it and the balance bar 5 are in the same plane parallel to the guardrail, and fix it with bolts;

(5) The pull ring at one end of the weight 16 is buckled on the movable pulley 10, and the operator sits on the seat 51 on the balance bar 5 to balance the weight of the weight 16 and reduce the labor intensity of the operator; Turn the driving reel 7 to lift the weight 16 to a height exceeding the top of the guardrail, then loosen the bolts between the movable sleeve rod 3 and the sleeve column 2, control the movable sleeve rod 3 through the balance rod 5, and drive the stressed beam 4 to rotate 90 degree to the direction perpendicular to the guardrail, and then reversely rotate the driving drum 7 to lower the weight 16 to a height suitable for the impact of the pier, and lock the anti-rotation device on the driving drum 7;

(6) Impact the side of the pier laterally with the weight 16. There are two ways of operation: the first one, if the bridge is on land, the operator can tie the rope to the pull ring 11 at the end of the weight 16, and pull the weight 16 through the rope to impact the pier laterally; the second one, if it is For pier in water, the operator first pushes out the wire rope 8 on the sidewalk of the bridge through the operating rod 6 with the split ring 61, and then pulls it back forcefully, thereby driving the weight 16 to impact the pier;

(7) Lift the weight 16 to a height higher than the bridge guardrail by driving the reel 7 to wind the steel wire rope 8, then use manpower to assist its descent and place it on the fixed support 13 at the center of the base 1;

(8) Unlock the fixed lock of the universal wheel 15, push the whole device to move to the next pier, and then repeat steps (1)-(7).

Using the device to lift, lower and move the weight can save more than 50% of the time and labor compared with the traditional manual operation method.

As mentioned above, although the Example of this invention was demonstrated in detail, it is obvious to those skilled in the art that many modifications are possible as long as the inventive point and effect of this invention are not substantially deviated. Therefore, all such modified examples are also included in the protection scope of the present invention.

Claims (10)

1. A bridge substructure impact vibration test weight operating device is characterized in that it comprises a base (1), the base (1) is provided with a sleeve column (2), and an end of a movable sleeve rod (3) is inserted into the In the aforementioned sleeve column (2), the other end of the movable sleeve rod (3) is equipped with a stressed beam (4), a lifting device is installed on the stressed beam (4), and a weight (16) is hoisted at the end of the lifting device. ); the junction of the movable sleeve rod (3) and the sleeve column (2) is fitted with a connecting pipe (17), and the connecting pipe (17) is externally connected with a balance bar (5). 2. A kind of bridge substructure impact vibration test weight operating device according to claim 1, is characterized in that, described hoisting device comprises the driving drum (7) that is installed on the two ends of stressed beam (4) and fixed Pulley (9), and the fixed pulley (91) in the stressed beam (4) middle part, wire rope (8) and movable pulley (10). 3. The hammer operating device for the impact vibration test of a bridge substructure according to claim 2, characterized in that an anti-rotation device is provided on the driving drum (7). 4. A kind of bridge substructure impact vibration test weight operating device according to claim 1, is characterized in that, described stressed beam (4) is fixed on movable sleeve bar (3) by a mounting sleeve (41) )superior. 5. A kind of bridge substructure impact vibration test weight operating device according to claim 1, is characterized in that, the other end of described balance bar (5) is provided with a seat (51), and seat (51) The lower end of is provided with a force bar (52), and the end of force bar (52) is equipped with universal wheel (53) and touches the ground. 6. A heavy hammer operating device for the impact vibration test of a bridge substructure according to claim 1, characterized in that a pull ring (11) is also provided on the heavy hammer (16). 7. a kind of bridge substructure impact vibration test heavy hammer operating device according to claim 1, is characterized in that, also comprises a heavy hammer operating lever (6), and the end of heavy hammer operating lever (6) is provided with a split ring ( 61). 8. A kind of bridge substructure impact vibration test weight operating device according to claim 1, is characterized in that, described base (1) is provided with a fixed sleeve (12), and described sleeve column ( 2) Install on the fixed sleeve (12). 9. A heavy hammer operating device for impact vibration test of bridge substructure according to claim 1, characterized in that, said base (1) is provided with a fixed support (13) for placing a heavy hammer (16). 10. A heavy hammer operating device for impact vibration test of bridge substructure according to claim 1, characterized in that directional wheels (14) and universal wheels (15) are installed on the lower end of the base (1).

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