CN210216520U

CN210216520U - Pile foundation resistance to plucking performance detection device for engineering investigation

Info

Publication number: CN210216520U
Application number: CN201920237163.XU
Authority: CN
Inventors: Yanfeng Wang; 王艳峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-02-26
Filing date: 2019-02-26
Publication date: 2020-03-31
Anticipated expiration: 2029-02-26

Abstract

The utility model discloses a pile foundation resistance to plucking performance detection device for engineering investigation, including the main tributary strut, the top four corners department of main tributary strut is fixed with rings, it is provided with a rotatory lead screw to be vertical rotation state on the support body left and right sides symmetric position of main tributary strut respectively, initiative toper tooth is connected to on double-end power motor's the output through reduction gear, be in the same place through horizontal lift board fixed connection between two internal thread nut, install force sensor on the bottom plate face of horizontal lift board, it has fastening bolt to run through with screw-thread fit form adaptation in the support positioning piece, fastening bolt's end rotates through the bearing frame and is provided with the grip block, still be provided with display cabinet and data printer on the side bearer of main tributary strut. The utility model is simple in operation convenient, mechanical transmission stability is high, compares in its data display of traditional detection device more accurate, satisfies each item index requirement of on-the-spot engineering investigation.

Description

Pile foundation resistance to plucking performance detection device for engineering investigation

Technical Field

The utility model relates to an engineering investigation detects relevant technical field, specifically is a pile foundation resistance to plucking performance detection device for engineering investigation.

Background

Deep foundations consisting of piles and pile caps connected to the tops of the piles or single-pile foundations consisting of columns connected to pile foundations, referred to as pile foundations for short. 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. In high-rise buildings, pile foundations are widely applied.

Pile foundation resistance to plucking bearing capacity detects to be that construction engineering design and engineering are accepted, and prior art's detection device is very inconvenient when carrying out the position change because the size is great, and it is relatively poor to ensure that the clamping stability when actually carrying out the fixed of pile foundation, and the easy slippage of pile foundation not only can not carry out the real-time demonstration of data, also can not carry out the quick printing of data report, and the testing result is inaccurate to influence each item and detect the judgement of index.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pile foundation resistance to plucking performance detection device for engineering investigation 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:

a pile foundation uplift resistance detection device for engineering investigation comprises a main support frame, lifting rings are fixed at four corners of the top end of the main support frame, rotary lead screws are respectively arranged at the symmetrical positions of the left side and the right side of a frame body of the main support frame in a vertical rotating state, follow-up conical teeth are fixed at the top ends of the rotary lead screws coaxially, the follow-up conical teeth are meshed with the drive conical teeth in a matching mode, the drive conical teeth are connected to the output end of a double-end power motor through a speed reducer in a transmission mode, an internal thread nut is sleeved on each of the two rotary lead screws at the same horizontal line position correspondingly and fixedly connected to a guide sliding block through a fixing and connecting column, the guide sliding block is limited in a vertical guide sliding rail in a matching mode, the two internal thread nuts are fixedly connected together through a horizontal lifting plate, and tension sensors are symmetrically installed on the bottom plate surface, each tension sensor is respectively fixed with a supporting and positioning block, a fastening bolt penetrates through the supporting and positioning blocks in a thread fit mode in a matching mode, the end part of the fastening bolt is rotatably provided with a clamping plate through a bearing seat, a plurality of triangular anti-skidding protrusions are uniformly arranged on the inner plate surface of the clamping plate, and a display case and a data printer are further arranged on the side frame of the main support frame.

As a further aspect of the present invention: and foot seats are arranged at the four corners of the bottom end of the main supporting frame.

As a further aspect of the present invention: the through-hole has been seted up to the skew position that is used for installing rotatory lead screw of internal thread nut, and sliding connection has the guide arm in the through-hole, and the both ends processing of guide arm is formed with the screw thread and corresponds respectively and is connected with a balancing weight, all is provided with the spring between the tip of balancing weight and internal thread nut, and the spring is in pretension state.

Compared with the prior art, the beneficial effects of the utility model are that: this practicality sets up the mechanism that can remove for the fixed point is drawn the test and is feasible, just this practicality guarantees simple structure through the structure of motor and drive lead screw, and the screw thread in the lead screw has the characteristic of auto-lock simultaneously, ensures the stability of drawing. This practicality still is provided with the damping structure, improves and draws the protection possibility to equipment after the test fracture.

Drawings

Fig. 1 is a schematic structural diagram of a pile foundation uplift resistance detection device for engineering investigation.

Fig. 2 is a schematic side view of a clamping plate in the pile foundation uplift resistance detection device for engineering investigation.

Fig. 3 is a schematic diagram of a damping structure in the pile foundation uplift resistance detection device for engineering investigation.

Fig. 4 is a signal transmission schematic diagram of a pile foundation uplift resistance detection device for engineering investigation.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-4, in an embodiment of the present invention, a pile foundation uplift resistance detection device for engineering investigation, includes main support frame 1, the top four corners of main support frame 1 is fixed with lifting ring 3, lifting ring 3 through adding can use the crane to lift whole main support frame 1 integrally, so as to move the device fast to the pile foundation position department of waiting to detect, be convenient for carry out the position change.

The four corners of the bottom end of the main support frame 1 are provided with foot seats 2, the left and right symmetrical positions of the frame body of the main support frame 1 are respectively provided with a rotary screw rod 4 in a vertical rotating state, the top end of the rotary screw rod 4 is coaxially fixed with a following conical tooth 7, the following conical tooth 7 is meshed with a driving conical tooth 8 in a matching manner, the driving conical tooth 8 is connected to the output end of a double-head power motor 10 through a speed reducer 9 in a transmission manner, the two rotary screw rods 4 are respectively and correspondingly sleeved with an internal thread nut 5 at the same horizontal line position, the internal thread nuts 5 are fixedly connected to a guide slide block 12 through a fixing and connecting column 11, the guide slide block 12 is limited in a vertical guide slide rail 13 in a matching manner, the two internal thread nuts 5 are fixedly connected together through a horizontal lifting plate 6, and tension sensors 15 are symmetrically installed on the bottom plate surface of, each tension sensor 15 is fixed with a supporting and positioning block 16, a fastening bolt 18 is arranged in the supporting and positioning block 16 in a thread fit manner in a penetrating manner, the end part of the fastening bolt 18 is rotatably provided with a clamping plate 14 through a bearing seat 17, and a plurality of triangular anti-skid protrusions 19 are uniformly arranged on the inner plate surface of the clamping plate 14.

The through-hole has been seted up to the skew position that is used for installing rotatory lead screw 4 of female screw nut 5, sliding connection has guide arm 22 in the through-hole, the both ends processing of guide arm 22 are formed with the screw thread and correspond respectively and are connected with a balancing weight 25, all be provided with spring 24 between the tip of balancing weight 25 and female screw nut 5, and spring 24 is in the pretension state, in drawing the inspection process, if the condition such as fracture takes place for the detection piece, some can be consumed by balancing weight 25, the damping structure that guide arm 22 and spring 24 constitute, reduce the possibility of damaging structures such as lead screw.

The side frame of the main support frame 1 is also provided with a display case 20 and a data printer 21, the tension sensor 15, the display case 20 and the data printer 21 are connected together through cable signals, the tension sensor 15 transmits sensed signals to the display case 20, the display case 20 can display data in a test process in real time, the display case 20 sends instructions to the data printer 21 to print data reports, and the three parts are all parts in the prior art, and the signal transmission technology among the parts is well known by persons in the art, so repeated description is not repeated herein.

Therefore, the whole main supporting frame 1 can be integrally lifted by using a crane through the additionally arranged lifting ring 3 so as to quickly move the device to the position of the pile foundation to be detected, and the position change is convenient; then, an inspector operates the fastening bolt 18, the clamping plates 14 on the left side and the right side are utilized to perform rapid clamping operation on the pile foundation to be detected, and a plurality of triangular anti-slip protrusions 19 are additionally arranged on the inner plate surfaces of the clamping plates 14 to avoid slipping and ensure the clamping stability; then, an investigator starts a double-head power motor 10, under the action of a deceleration force of a speed reducer 9, the rotating lead screws 4 are driven to synchronously rotate through the meshing transmission of a driving conical tooth 8 and a following conical tooth 7, as the two rotating lead screws 4 are respectively and correspondingly sleeved with an internal thread nut 5 at the same horizontal line position, under the limiting action of a guide slide block 12 and a vertical guide slide rail 13 additionally arranged on the side edge, the purpose of synchronously walking the two internal thread nuts 5 is realized, a horizontal lifting plate 6 is driven to stably move upwards immediately, a pile foundation to be detected is pulled upwards, the pulling force sensor 15 is used for sensing and detecting the pulling force, the pulling force sensor 15 transmits sensed signals to a display case 20, the display case 20 can display data in the testing process in real time, and the display case 20 sends an instruction to a data printer 21 for rapidly printing a data report, the investigation personnel carry out the judgement of pile foundation resistance to plucking performance according to the data that show in real time can, whole easy operation is convenient, and mechanical transmission stability is high, compares in its data display of traditional detection device more accurate, satisfies each item index requirement of on-the-spot engineering investigation, the electronic component of this utility model relates to is prior art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A pile foundation uplift resistance detection device for engineering investigation comprises a main support frame (1) and is characterized in that lifting rings (3) are fixed at four corners of the top end of the main support frame (1), a rotary lead screw (4) is respectively arranged at symmetrical positions on the left side and the right side of a frame body of the main support frame (1) in a vertical rotating state, follow-up conical teeth (7) are fixed at the top end of the rotary lead screw (4) coaxially, the follow-up conical teeth (7) are meshed with driving conical teeth (8) in a matching mode, the driving conical teeth (8) are connected to the output end of a double-end power motor (10) through a speed reducer (9) in a transmission mode, an internal thread nut (5) is correspondingly sleeved at the position of the same horizontal line on the two rotary lead screws (4) respectively, the internal thread nut (5) is fixedly connected to a guide sliding block (12) through a fixed connecting column (, the direction slider (12) adaptation is spacing in vertical direction slide rail (13), is in the same place through horizontal lifting plate (6) fixed connection between two internal thread nut (5), pulling force sensor (15) are installed to the symmetry on the bottom plate face of horizontal lifting plate (6), every is fixed with a supporting locating piece (16) respectively in pulling force sensor (15), has penetrated fastening bolt (18) with screw-thread fit form adaptation in supporting locating piece (16), and the end portion of fastening bolt (18) is rotated through bearing frame (17) and is provided with clamp plate (14), evenly arranged a plurality of triangle non-slip raised (19) on the interior face of clamp plate (14), still be provided with display machine case (20) and data printer (21) on the side bearer of main tributary strut (1).

2. The device for detecting the uplift resistance of the pile foundation for engineering investigation as claimed in claim 1, wherein the four corners of the bottom end of the main supporting frame (1) are provided with foot seats (2).

3. The pile foundation uplift resistance detection device for engineering investigation according to claim 1, wherein a through hole is formed in the position, deviating from the position for installing the rotary screw rod (4), of the internal thread nut (5), a guide rod (22) is connected in the through hole in a sliding manner, two ends of the guide rod (22) are processed to form threads and are respectively and correspondingly connected with a balancing weight (25), a spring (24) is arranged between the balancing weight (25) and the end of the internal thread nut (5), and the spring (24) is in a pre-tightening state.