CN210049296U

CN210049296U - Pile foundation high strain detection device

Info

Publication number: CN210049296U
Application number: CN201920370452.7U
Authority: CN
Inventors: 牛继辉
Original assignee: Fujian Lijian Engineering Technology Co Ltd
Current assignee: Fujian Lijian Inspection And Testing Group Co ltd
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2020-02-11
Anticipated expiration: 2029-03-22

Abstract

The utility model relates to a pile foundation height is met an emergency and is detected auxiliary assembly technical field, specifically is a pile foundation height is met an emergency detection device, including the leading truck base, be provided with the guide way that is used for the weight to vertically pass through on the leading truck base, the weight drives the lift through suspending in midair the mechanism, and the guide way outside circumference of leading truck base is provided with a plurality of steel channels, and the steel channel is by the flexible supporting mechanism fixed stay of steel channel and the drive horizontal migration that its outside set up, and the inboard in steel channel is provided with and is used for the pulley to the spacing direction of weight. The utility model discloses can guarantee that the weight changes direction and steady when the whereabouts, and hammering energy loss is littleer to improve test quality.

Description

Pile foundation high strain detection device

Technical Field

The utility model relates to a pile foundation height is met an emergency and is detected auxiliary assembly technical field, specifically is a pile foundation height is met an emergency detection device.

Background

Pile foundation: the foundation is composed of piles and bearing platforms connected to the tops of the piles. If the pile body is completely buried in the soil and the bottom surface of the bearing platform is contacted with the soil body, the pile body is called a low bearing platform pile foundation; when the upper part of the pile body is exposed out of the ground and the bottom of the pile cap is positioned above the ground, the pile body is called a high pile cap pile foundation. Building pile foundations are typically low cap pile foundations. According to the requirements of 'building foundation pile detection Specifications' (JGJ106-2014), when the detection mechanism carries out pile foundation high strain detection, the hammering equipment special for high strain detection is definitely provided to be provided with a stable guiding device.

The existing detection mechanism has different guide device forms and has no uniform pattern, so the effect is different. Therefore, in view of the above current situation, there is an urgent need to develop a pile foundation high strain detection device to overcome the shortcomings in the current practical application.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high strain detection device of pile foundation to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a pile foundation height detection device that meets an emergency, includes the leading truck base, be provided with the guide way that is used for the weight to vertically pass through on the leading truck base, the weight drives through suspending in midair the mechanism and goes up and down, the guide way outside circumference of leading truck base is provided with a plurality of steel channels, and the steel channel is by the flexible supporting mechanism fixed stay of steel channel and the drive horizontal migration that its outside set up, the inboard in steel channel is provided with and is used for the pulley to the spacing direction of weight.

As a further aspect of the present invention: the suspension mechanism is a crane.

As a further aspect of the present invention: the steel groove circumference evenly is provided with threely, and the steel groove is vertically set up.

As a further aspect of the present invention: the pulleys are rotatably arranged on the steel grooves, and at least two pulleys are arranged on one steel groove.

A pile foundation detection system comprises the pile foundation high strain detection device.

Compared with the prior art, the beneficial effects of the utility model are that:

1) under the condition that the guide frame base is installed in place and fixed well, the centering requirement can be met by adjusting the drop hammer and the telescopic steel groove without repeatedly adjusting the guide frame base;

2) the guide frame base is suitable for heavy hammers with symmetrical shapes;

3) the guide frame base can finish hoisting and detection at one time, the efficiency is high, and the friction is reduced due to the contact of the heavy hammer and the pulley when the heavy hammer falls, so that the impact force is not reduced, high-frequency longitudinal and transverse interference waves generated due to friction and collision are avoided, and the acquisition of high-quality detection data can be ensured.

In conclusion, the device can guarantee that the weight is easier to guide and stable when falling, and the hammering energy loss is smaller, thereby improving the testing quality.

Drawings

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

In the figure: 1-heavy hammer, 2-pulley, 3-steel groove, 4-steel groove telescopic supporting mechanism, 5-guide frame base, 6-pile body and 7-suspension mechanism.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1

Referring to fig. 1, in an embodiment of the present invention, a pile foundation high strain detection apparatus includes a guide frame base 5, a guide groove for allowing a heavy hammer 1 to longitudinally pass through is disposed on the guide frame base 5, the heavy hammer 1 is driven to lift by a suspension mechanism 7, and the suspension mechanism 7 is a crane.

The guide way outside circumference of leading truck base 5 is provided with a plurality of steel grooves 3, 3 circumference in steel groove evenly are provided with threely, and 3 vertical settings in steel groove, and steel groove 3 is by 4 fixed stay and the drive horizontal migration of the steel groove telescopic support mechanism that its outside set up, and steel groove telescopic support mechanism 4 adopts pneumatic cylinder, cylinder etc. and support frame combination, as long as can be to 3 stabilizing stay in steel groove and drive horizontal migration can, no longer give unnecessary details, the inboard of steel groove 3 is provided with and is used for the pulley 2 to the spacing direction of weight 1, 2 rotations of pulley are installed on steel groove 3, and install two at least pulleys 2 on one steel groove 3.

Firstly, designing and transforming a guide frame base 5, changing an original fixed steel groove with a guiding function into a telescopic one, and installing a pulley 2 along the guide groove; when the device is used, the guide frame base 5 is fixed, after the heavy hammer 1 is basically aligned to the center of the pile body 6, the pulley 2 of the heavy hammer is in contact with the side face of the heavy hammer 1 and is locked at a position by adjusting the telescopic steel groove 3 with a guiding function, then the heavy hammer 1 is lifted to a certain height and unhooked, the heavy hammer 1 freely falls to impact the top of the pile body 6, and detection data are collected through a collector and a mounted sensor.

Example 2

A pile foundation detection system comprising the pile foundation high strain detection apparatus of embodiment 1.

Application examples

The method comprises the following steps that a certain project is a PHC prestressed concrete pipe pile, the pile diameter is phi 500mm, the load characteristic value of a commission test is 2000kN, the weight of a heavy hammer 1 is required to be not less than 40kN according to the specification, and a company selects the heavy hammer 1 with the weight of 61kN, the height of 1100mm and the diameter of 950mm according to the existing condition; the test procedure was as follows:

1) before the field test, a test pit is dug, the guide frame bases 5 are symmetrically fixed, then the distance between the guide grooves in the opposite direction is measured by a tape measure and adjusted to reach not less than 1000mm, and the heavy hammer 1 is convenient to have an adjustable space when being lifted;

2) measuring the elevation data of a certain marked position by using a precision level gauge and recording the elevation data;

3) lightly placing the heavy hammer 1 on the pile body 6 along the guide groove by using a crane, ensuring that the center of the heavy hammer 1 is aligned with the center of the pile body 6 in the placing process, and adjusting the telescopic steel groove 3 with the guiding function to enable the pulley 2 to be in contact with the side surface of the heavy hammer 1 and to lock the position;

4) lifting the heavy hammer 1 to a certain height and unhooking, enabling the heavy hammer 1 to freely fall to impact the top of the pile body 1, collecting and storing detection data through a collecting instrument and an installed sensor, and then lifting the heavy hammer 1 and moving to a safe place;

5) and measuring the elevation data of a certain marked position again by using the originally erected precision level gauge, recording the elevation data, and subtracting the two-time data to obtain the penetration of the test, so that the test is finished at the last time.

This pile foundation height detection device that meets an emergency has following outstanding advantage:

1) the purpose of applying the design is that under the condition that the guide frame base 5 is installed in place and fixed well, the centering requirement can be met by adjusting the drop hammer and the telescopic steel groove 3 without repeatedly adjusting the guide frame base 5;

2) the guide frame base 5 of the utility model is suitable for the heavy hammers 1 with symmetrical shapes;

3) the utility model discloses hoist and mount and detection can once only be accomplished to leading truck base 5, and efficient, and weight 1 has reduced the friction because of contacting with pulley 2 when the whereabouts to guaranteed that the impact force is not reduced, also avoided because of friction and collision the high frequency that produces indulges, violently disturb the ripples, can guarantee to gather higher-quality detection data.

In conclusion, the device can ensure that the heavy hammer 1 is easier to guide and stable when falling, and the hammering energy loss is smaller, thereby improving the testing quality.

The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. The utility model provides a pile foundation high strain detection device, includes leading truck base (5), be provided with the guide way that is used for weight (1) vertically to pass through on leading truck base (5), weight (1) drive through suspending in midair mechanism (7) and go up and down, its characterized in that:

a plurality of steel grooves (3) are circumferentially arranged on the outer side of the guide groove of the guide frame base (5), and the steel grooves (3) are fixedly supported and driven to horizontally move by a steel groove telescopic supporting mechanism (4) arranged on the outer side of the steel grooves;

and a pulley (2) used for limiting and guiding the heavy hammer (1) is arranged on the inner side of the steel groove (3).

2. The pile foundation high strain detection device according to claim 1, wherein the suspension mechanism (7) is a crane.

3. The pile foundation high strain detection device according to claim 1, wherein three steel grooves (3) are uniformly arranged in the circumferential direction, and the steel grooves (3) are longitudinally arranged.

4. The pile foundation high strain detection device according to claim 1 or 3, wherein the pulleys (2) are rotatably mounted on the steel troughs (3), and at least two pulleys (2) are mounted on one steel trough (3).