CN213544472U

CN213544472U - Force rod for detecting integrity of pile body by low strain method

Info

Publication number: CN213544472U
Application number: CN202022543024.5U
Authority: CN
Inventors: 王志超; 郑振浩; 李刘申
Original assignee: Zhengzhou University
Current assignee: Zhengzhou University
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2021-06-25
Anticipated expiration: 2030-11-06

Abstract

The utility model relates to a low power stick that law of meeting an emergency detects pile shaft integrality usefulness, including base, outer sleeve and stopper, the welding of the upper surface intermediate position department of base has the connecting rod, the lower surface of base has the hammering head through the bolt fastening, the outer sleeve activity is cup jointed on the connecting rod, and the outer wall intermediate position department of outer sleeve is equipped with the mounting groove, and the veneer has the rubber pad in the mounting groove, the lower surface of outer sleeve is equipped with the embedded groove, threaded mounting has the rotation cap on the connecting rod, the upper surface of rotation cap and outer sleeve contacts each other, and the upper surface welding of base has the stopper, the stopper activity inserts in the embedded groove. The utility model discloses, compact structure, it is convenient to use, adopts split type design, is convenient for change the tup, satisfies personnel's user demand.

Description

Force rod for detecting integrity of pile body by low strain method

Technical Field

The utility model relates to a low back wave method field that meets an emergency, concretely relates to low method that meets an emergency detects power stick that pile body integrality was used.

Background

The low-strain reflection wave method is the most widely applied method in foundation pile detection, and is also called transient dynamic measurement method, hammering method and the like, and the main function of the low-strain reflection wave method is to inspect the integrity of a pile body structure, such as judgment of the defect position of the pile body, construction pile length correction, qualitative estimation of concrete strength grade and the like.

The pile top is knocked by a hand hammer or a force hammer and a force rod, stress waves generated by the knocking are downwards transmitted along the pile body at a wave speed, when the stress waves pass through the impedance change interface of the pile, one part of the stress waves are reflected and upwards transmitted, the other part of the stress waves are transmitted and downwards transmitted to the pile end, the reflection is generated at the pile end, the reflected wave signals are received by an acceleration or speed sensor arranged at the pile top, and the acceleration time-course curve is obtained after the signals are amplified by a pile measuring instrument and the like. The position of impedance change or the length of the check pile can be judged from the characteristic of curve form, the strength grade of concrete is estimated according to the average wave velocity, the hammer head of the long pile is preferably a rubber head, and the short pile is an aluminum alloy head.

Traditional power stick is in the use, and the tup is because often produces the striking with the pile body, and the tup is fragile, and is difficult to the change of tup, can not satisfy personnel's user demand.

SUMMERY OF THE UTILITY MODEL

The utility model provides a low strain method detects power stick that pile body integrality was used has solved above technical problem.

The utility model provides a scheme as follows of above-mentioned technical problem: including base, outer sleeve and stopper, the welding of the upper surface intermediate position department of base has the connecting rod, the lower surface of base has the hammering head through the bolt fastening, the outer sleeve activity cup joints on the connecting rod, the lower surface of outer sleeve is equipped with the embedded groove, threaded mounting has the rotation cap on the connecting rod, the upper surface of rotation cap and outer sleeve contacts each other.

The utility model has the advantages that: the utility model discloses in the use, can hand the outer sleeve, make the hammering head be located and detect the ten to fifteen centimetres departments in pile body top, then loosen the hand, make the free falling body of hammering head carry out the hammering to the pile head, the power stick falls the pile body bounce-back, will grasp the power stick immediately, when changing the hammering head, can twist and fall the cap that rotates, make the connecting rod take out in the outer sleeve, insert other hammering head together with the connecting rod in the outer sleeve again, then twist the cap that rotates again, rotate the upper surface of cap oppression outer sleeve, thereby make in the stopper embedding embedded groove, fix a position external telescopic position, prevent that the outer sleeve from producing and rock, the utility model discloses, compact structure, it is convenient to use, adopts split type design, is convenient for change the tup, satisfies personnel's user demand.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Furthermore, the upper surface welding of base has the stopper, the stopper activity is inserted in the embedded groove.

The beneficial effect of adopting the further scheme is that: the position of the outer sleeve is convenient to locate.

Furthermore, the sections of the limiting blocks and the embedded grooves are both in a trapezoidal shape.

The beneficial effect of adopting the further scheme is that: ensuring the tightness of the connection between the two.

Furthermore, a mounting groove is formed in the middle of the outer wall of the outer sleeve, and a rubber pad is glued in the mounting groove.

The beneficial effect of adopting the further scheme is that: when an operator holds the device by hand, the friction force can be effectively increased, and the operator can conveniently hold the device.

Furthermore, the upper end of the connecting rod is provided with a thread groove matched with the rotating cap, and the rotating cap is meshed with the thread groove.

The beneficial effect of adopting the further scheme is that: the cap is rotated to depress the outer sleeve by the action of the threaded engagement to fix the position of the outer sleeve.

Furthermore, the number of the limiting blocks is four, and the limiting blocks are distributed on the upper surface of the base in an annular array.

The beneficial effect of adopting the further scheme is that: and the contact point position between the outer sleeve and the limiting block is increased.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings. The detailed description of the present invention is given by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a schematic front view of a force rod for detecting integrity of a pile body by a low strain method according to an embodiment of the present invention;

fig. 2 is a schematic view of an appearance structure of a force rod for detecting integrity of a pile body by a low strain method according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a force rod in fig. 1 for detecting integrity of a pile body by a low strain method according to an embodiment of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a base; 2. mounting grooves; 3. a connecting rod; 4. rotating the cap; 5. a rubber pad; 6. an outer sleeve; 7. a hammering head; 8. a limiting block; 9. and a groove is embedded.

Detailed Description

The principles and features of the present invention are described below in conjunction with the accompanying fig. 1-3, the examples given are intended to illustrate the present invention and are not intended to limit the scope of the invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to fig. 3, the present invention provides an embodiment: the utility model provides a low method of meeting an emergency detects power stick that pile shaft integrality was used, includes base 1, outer sleeve 6 and stopper 8, and the welding of base 1's upper surface intermediate position department has connecting rod 3, and base 1's lower surface has hammering head 7 through the bolt fastening, and outer sleeve 6 activity cup joints on connecting rod 3, and the outer wall intermediate position department of outer sleeve 6 is equipped with mounting groove 2, and the veneer has rubber pad 5 in the mounting groove 2, can effectually play skid-proof effect.

In the using process, the outer sleeve 6 can be held by hand, the hammering head 7 is located ten to fifteen centimeters above the pile body to be detected, then the hand is loosened, the hammering head is hammered by the free falling body of the hammering head 7, and the force rod is immediately grabbed after the force rod falls to the rebounding position of the pile body.

The lower surface of outer sleeve 6 is equipped with embedded groove 9, threaded mounting has rotation cap 4 on connecting rod 3, the thread groove with rotating cap 4 looks adaptation is seted up to the upper end of connecting rod 3, rotate cap 4 and thread groove intermeshing, the upper surface of rotating cap 4 and outer sleeve 6 contacts each other, when changing hammering head 7, can twist and fall rotation cap 4, make connecting rod 3 take out from outer sleeve 6, insert outer sleeve 6 again with other hammering head 7 together with connecting rod 3, then twist rotation cap 4 again, rotate the upper surface of cap 4 oppression outer sleeve 6.

Base 1's last surface welding has stopper 8, and in stopper 8 activity inserted embedded groove 9, the section of stopper 8 and embedded groove 9 all was trapezoidal shape, and stopper 8 is four altogether, and stopper 8 is the annular array distribution at base 1's upper surface, and stopper 8 imbeds in embedded groove 9, fixes a position the position of outer sleeve 6, prevents that outer sleeve 6 from producing to rock, the utility model discloses, compact structure, it is convenient to use, adopts split type design, is convenient for change the tup, satisfies personnel's user demand.

The working principle is as follows: the utility model discloses in the use, can hand outer sleeve 6, make hammering head 7 be located wait to detect pile body top ten to fifteen centimetres department, then loosen the hand, make hammering head 7 free fall carry out the hammering to the pile head, the power stick falls the pile body rebound back, will grasp the power stick immediately, when changing hammering head 7, can twist and turn cap 4, make connecting rod 3 take out from outer sleeve 6, with other hammering head 7 with connecting rod 3 insert outer sleeve 6 again, then twist rotation cap 4 again, rotate cap 4 oppression 6's upper surface, thereby make in stopper 8 embedding embedded groove 9, fix a position outer sleeve 6's position, prevent that outer sleeve 6 from producing and rocking.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; the present invention can be smoothly implemented by those skilled in the art according to the drawings and the above description; however, those skilled in the art should understand that changes, modifications and variations made by the above-described technology can be made without departing from the scope of the present invention, and all such changes, modifications and variations are equivalent embodiments of the present invention; meanwhile, any changes, modifications, evolutions, etc. of the above embodiments, which are equivalent to the actual techniques of the present invention, still belong to the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a low method of meeting an emergency detects power stick that pile shaft integrality was used, a serial communication port, including base (1), outer sleeve (6) and stopper (8), the welding of the upper surface intermediate position department of base (1) has connecting rod (3), the lower surface of base (1) has hammering head (7) through the bolt fastening, outer sleeve (6) activity is cup jointed on connecting rod (3), the lower surface of outer sleeve (6) is equipped with embedded groove (9), threaded mounting has rotation cap (4) on connecting rod (3), rotate cap (4) and the upper surface of outer sleeve (6) and contact each other.

2. The force rod for detecting the integrity of the pile body by the low strain method according to claim 1, wherein a limiting block (8) is welded on the upper surface of the base (1), and the limiting block (8) is movably inserted into the embedded groove (9).

3. The force rod for detecting the integrity of the pile body by the low strain method according to claim 1, wherein the cross sections of the limiting block (8) and the embedded groove (9) are both in a trapezoidal shape.

4. The force rod for detecting the integrity of the pile body by the low strain method according to claim 1, wherein a mounting groove (2) is formed in the middle position of the outer wall of the outer sleeve (6), and a rubber pad (5) is glued in the mounting groove (2).

5. The force rod for detecting the integrity of the pile body by the low strain method according to claim 1, wherein the upper end of the connecting rod (3) is provided with a thread groove matched with the rotating cap (4), and the rotating cap (4) is meshed with the thread groove.

6. The force rod for detecting the integrity of the pile body by the low strain method according to claim 1, wherein the number of the limiting blocks (8) is four, and the limiting blocks (8) are distributed on the upper surface of the base (1) in an annular array.