CN216082349U

CN216082349U - Drop hammer type deflection detection device

Info

Publication number: CN216082349U
Application number: CN202121429733.9U
Authority: CN
Inventors: 钱俊
Original assignee: Jiangsu Zhongzheng Testing Co ltd
Current assignee: Jiangsu Zhongzheng Testing Co ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2022-03-18
Anticipated expiration: 2031-06-25

Abstract

The utility model discloses a drop hammer type deflection detection device which comprises a supporting table, wherein an electric telescopic rod is installed at the top end of the supporting table, a top plate is fixed at the top end of the electric telescopic rod, a drop hole is formed in the surface of the top plate, a pull rod penetrates through the interior of the drop hole, a supporting rod is fixed at the top end of the pull rod, and a roller is installed at the bottom end of the supporting rod. The pull rod passes through the bracing piece to be connected with the roof, and the bracing piece rotates gently, and the bracing piece passes through the gyro wheel rotation, to bracing piece and whereabouts hole coincidence to fall down, make the pull rod whereabouts, reduce the interference of bearing structure such as roof to pull rod and drop hammer, increase the accuracy of testing result. Through electric telescopic handle and weight, can change the height and the weight of hammer that falls, do benefit to and detect the road surface of difference to through the stand pipe, make the vertical whereabouts of hammer that falls, avoid the hammer that falls crooked.

Description

Drop hammer type deflection detection device

Technical Field

The utility model belongs to the technical field of deflection detection, and particularly relates to a drop hammer type deflection detection device.

Background

In recent years, the research and development of pavement nondestructive testing technology are increasingly and widely regarded at home and abroad, and as the deflection value is larger, the pavement rigidity is worse, and the deformation is larger, each layer of the pavement is easier to break; the road deflection is one of indexes of road acceptance monitoring control, provides data support for evaluating road bed condition and reinforcing design, and is necessary for detecting the deflection of the road. The drop hammer type deflection equipment has the advantages of no damage, high speed measurement, high precision and the like, well simulates the load action of a travelling crane, and the detection result is deflection basin data, so the drop hammer type deflection equipment is increasingly widely applied internationally.

The utility model patent of China with the publication number of CN111829901A discloses a drop hammer type deflection detection device in 27/10/2020, which comprises a device support, a drop hammer capable of moving up and down for impacting the ground, and a detection beam, wherein the detection beam is provided with a displacement measurement component which is positioned at the center of the drop hammer and used for measuring the subsidence value of the road surface, the detection beam is supported on the road surface through a detection beam supporting leg, the distance between the detection beam supporting leg and the displacement measurement component is larger than the deflection influence radius of the drop hammer on the road to be detected, and the drop hammer is provided with a measurement component avoiding space for avoiding the displacement measurement component. The utility model solves the technical problem that the displacement sensor can not accurately measure the sinking displacement of the road surface because the leveling screw rod is in the deflection influence range in the prior art.

The height and the weight of the existing drop hammer type deflection detection device are inconvenient to adjust, the detection on different road surfaces is relatively troublesome, and the drop hammer easily generates large interference with a support structure when falling, so that the detection result is inaccurate.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a drop hammer type deflection detection device, which aims to solve the problem that when a drop hammer falls, the drop hammer is easy to generate larger interference with a support structure, so that the detection result is inaccurate.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a weight formula deflection detection device that falls, includes a supporting bench, electric telescopic handle is installed on the top of a supporting bench, electric telescopic handle's top is fixed with the roof, open on the surface of roof has the hole that falls, the inside in hole that falls has passed the pull rod, the top of pull rod is fixed with the bracing piece, the gyro wheel is installed to the bottom of bracing piece.

Preferably, a guide pipe is installed in the middle of the supporting table, weights are placed on the surface of the pull rod, and a drop hammer is fixed at the bottom end of the pull rod.

Preferably, the bottom end of the supporting table is fixedly provided with a supporting leg, the bottom end of the supporting leg is fixedly provided with a base plate, and the bottom end of the base plate is fixedly provided with a fixing tip.

Preferably, the top plate is parallel to the supporting platform, the supporting platform is of a circular structure, and the pull rod is perpendicular to the top plate.

Preferably, the falling hole is of a rectangular structure, and the length and the width of the falling hole are not less than those of the supporting rod.

Preferably, the guide pipe is of a circular ring structure, and the diameter of the guide pipe is not smaller than that of the drop hammer.

Preferably, the backing plate is perpendicular to the supporting legs, and the fixing tip is of a conical structure.

Compared with the prior art, the drop hammer type deflection detection device provided by the utility model comprises the following components:

1. be provided with down hole, bracing piece and gyro wheel, during the use, the pull rod passes through the bracing piece to be connected with the roof, and the bracing piece rotates gently, and the bracing piece passes through the gyro wheel rotation to bracing piece and the coincidence of whereabouts hole to fall, make the pull rod whereabouts, reduce the interference of bearing structure such as roof to pull rod and drop hammer, increase the accuracy of testing result.

2. Be provided with stand pipe, electric telescopic handle and weight, during the use, through electric telescopic handle and weight, can change the height and the weight of hammer that falls, do benefit to and detect the road surface of difference to through the stand pipe, make the vertical whereabouts of hammer that falls, avoid the hammer that falls crooked.

3. Be provided with backing plate and fixed point, during the use, the supporting leg lands through the backing plate to carry out stable connection through fixed point, keep the supporting leg fixed.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1 in accordance with the present invention;

fig. 3 is a top view of fig. 1 of the present invention.

In the figure: 1. a support table; 2. supporting legs; 3. a base plate; 4. fixing the tip; 5. a guide tube; 6. dropping a hammer; 7. a weight; 8. a pull rod; 9. an electric telescopic rod; 10. a top plate; 11. dropping a hole; 12. a roller; 13. a support rod.

Detailed Description

Referring to fig. 1 and 3, a drop hammer deflection detection device includes a support table 1, wherein the support table 1 has a circular structure; the top end of the support table 1 is provided with four electric telescopic rods 9; the top end of the electric telescopic rod 9 is fixed with a top plate 10, and the top plate 10 is parallel to the support table 1.

Referring to fig. 1 and 3, a drop hole 11 is formed in the surface of the top plate 10, the drop hole 11 is located in the middle of the top plate 10, the drop hole 11 is rectangular, the length and width of the drop hole 11 are not less than the length and width of the support rod 13, and the support rod 13 can be conveniently dropped from the drop hole 11.

Referring to fig. 1 and 3, a pull rod 8 penetrates through the interior of the falling hole 11, the pull rod 8 is perpendicular to the top plate 10, the pull rod 8 is located in the middle of the falling hole 11, a support rod 13 is fixed at the top end of the pull rod 8, a roller 12 is installed at the bottom end of the support rod 13, and the roller 12 is located at the top end of the top plate 10.

Referring to fig. 1 and 3, the support rod 13 is rotated slightly, and the support rod 13 is rotated by the roller 12 until the support rod 13 coincides with the falling hole 11 and falls down, so that the pull rod 8 falls down, interference of the support structures such as the top plate 10 to the pull rod 8 and the falling weight 6 is reduced, and accuracy of the detection result is improved.

Referring to fig. 1 and 2, a guide pipe 5 is installed in the middle of the support table 1, the guide pipe 5 is of a circular structure, the diameter of the guide pipe 5 is not smaller than that of the drop hammer 6, and the length of the guide pipe 5 is not greater than that of the pull rod 8, so that the drop hammer 6 falls vertically, and the drop hammer 6 is prevented from being inclined.

Referring to fig. 1 and 2, weights 7 are placed on the surface of a pull rod 8, and a drop weight 6 is fixed at the bottom end of the pull rod 8; through electric telescopic handle 9 and weight 7, can change the height and the weight of drop hammer 6, do benefit to and detect the road surface of difference.

Referring to fig. 1, a supporting leg 2 is fixed at the bottom end of a supporting table 1, a backing plate 3 is fixed at the bottom end of the supporting leg 2, and the backing plate 3 is perpendicular to the supporting leg 2; the bottom end of the backing plate 3 is fixed with a fixed point 4, the fixed point 4 is of a conical structure, and the fixed point 4 lands on the ground to stabilize the support table 1.

The working principle of the scheme is as follows: the top plate 10 is mounted above the supporting table 1 by an electric telescopic rod 9, and the pull rod 8 passes through a drop hole 11 on the surface of the top plate 10 and is supported by a support rod 13.

The lower part of the pull rod 8 is positioned inside the guide pipe 5, the bottom end of the pull rod is fixed with the drop hammer 6, and the top end of the drop hammer 6 is provided with a weight 7.

The supporting table 1 is supported and placed through the supporting legs 2 and is stably reinforced through the fixing points 4; adding or reducing weights 7 to the top end of the drop hammer 6 according to different road surfaces, and adjusting the weight of the drop hammer 6; the electric telescopic rod 9 drives the upper part of the top plate 10 to adjust the height of the drop hammer 6.

After the adjustment is completed, the support rod 13 is slightly rotated, the support rod 13 is rotated through the roller 12 until the support rod 13 coincides with the falling hole 11 and falls down, so that the pull rod 8 falls down, and the falling hammer 6 falls down along the guide pipe 5 and lands on the ground for detection.

Claims

1. The utility model provides a drop hammer deflection detection device, includes brace table (1), its characterized in that: electric telescopic handle (9) are installed on the top of brace table (1), the top of electric telescopic handle (9) is fixed with roof (10), open on the surface of roof (10) has drop hole (11), pull rod (8) have been passed to the inside in drop hole (11), the top of pull rod (8) is fixed with bracing piece (13), gyro wheel (12) are installed to the bottom of bracing piece (13).

2. A drop weight deflection detection device as claimed in claim 1, wherein: the middle of the supporting table (1) is provided with a guide pipe (5), the surface of the pull rod (8) is provided with a weight (7), and the bottom end of the pull rod (8) is fixed with a drop hammer (6).

3. A drop weight deflection detection device as claimed in claim 1, wherein: the bottom end of the supporting table (1) is fixedly provided with the supporting legs (2), the bottom end of each supporting leg (2) is fixedly provided with the backing plate (3), and the bottom end of each backing plate (3) is fixedly provided with the fixing tip (4).

4. A drop weight deflection detection device as claimed in claim 1, wherein: the top plate (10) is parallel to the supporting table (1), the supporting table (1) is of a circular structure, and the pull rod (8) is perpendicular to the top plate (10).

5. A drop weight deflection detection device as claimed in claim 1, wherein: the falling hole (11) is of a rectangular structure, and the length and the width of the falling hole (11) are not less than those of the supporting rod (13).

6. A drop weight deflection detection device as claimed in claim 2, wherein: the guide pipe (5) is of a circular ring structure, and the diameter of the guide pipe (5) is not smaller than that of the drop hammer (6).

7. A drop weight deflection detection device as claimed in claim 3, wherein: the backing plate (3) is perpendicular to the supporting legs (2), and the fixing tip (4) is of a conical structure.