Foundation pile high strain testing device

Abstract

The utility model belongs to the technical field of pile foundation testing, and discloses a foundation pile high strain testing device which comprises a fixing frame, the fixing frame is fixedly connected with a controller, two supporting columns are symmetrically fixed to the two sides of the fixing frame, scale marks and guide sliding grooves are formed in the supporting columns, and the supporting columns are fixedly connected with a plurality of climbing handrails which are evenly distributed. The supporting column is slidably connected with a limiting sleeve, the limiting sleeve and the supporting column are fixedly locked through a bolt, the supporting column and the fixing frame are jointly connected with a supporting platform, a penetrating hole is formed in the center of the supporting platform, the supporting platform is fixedly connected with a motor and a rotating wheel, the motor is electrically connected with the controller, and a traction rope is wound around an output shaft of the motor. The traction rope sequentially penetrates through the rotating wheel and the penetrating hole and then is connected with a clamping assembly, the clamping assembly is movably connected with a fixing ring, and the fixing ring is fixedly connected with a heavy hammer. According to the utility model, the problems that the heavy hammer falls off through knocking and cannot fall off automatically, the device is deviated due to knocking, and the heavy hammer cannot accurately strike the bottom detection device in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pile foundation testing technical field especially relates to a foundation pile high strain testing device. BACKGROUND

[0002] As an important foundation structure of supporting building, the bearing capacity and integrity of foundation pile are very important. The foundation pile high strain testing device is a key equipment for detecting the performance of foundation pile. It adopts high strain method, that is, through the impact of weight on the pile top, the speed and force time history curve of the pile top are measured, and then the vertical compression bearing capacity of single pile and the integrity of pile body are determined by wave theory analysis. At present, in the actual operation process, when the weight needs to fall and impact the pile top, the operator knocks or pulls the side of the part connected with the weight to make the weight separate from the connecting part and then fall.

[0003] However, during the knocking or pulling process, a large impact force or lateral force is generated, which can easily cause the whole testing device to deviate to one side, so that the weight cannot accurately hit the bottom detection device when falling. UTILITY MODEL CONTENT

[0004] The utility model intends to provide a foundation pile high strain testing device to solve the problem that the existing device needs to knock or pull to realize the falling of the weight, and cannot realize the automatic falling of the weight. At the same time, when knocking the side of the knocking device, the large impact force or lateral force generated by knocking or pulling can cause the whole testing device to deviate to one side, and then cause the weight to fail to accurately hit the bottom detection device.

[0005] In order to realize the above purpose, the utility model provides the following technical scheme:

[0006] The utility model provides a foundation technology scheme: a foundation pile high strain testing device, including the fixed frame, the fixed frame fixedly connected with the controller, both sides of the fixed frame are fixed with two support columns, the support column is slidably connected with the limiting sleeve, the support column is connected with the support platform, the support platform center is provided with the through -hole, the support platform is fixedly connected with the motor and the runner, the motor is connected with the controller electrically, the output shaft of the motor is wound with the traction rope, the traction rope passes through the runner and the through -hole in proper order and is connected with the clamping assembly, the clamping assembly is movably connected with the fixed ring, the fixed ring is fixedly connected with the weight.

[0007] The clamping assembly comprises a first clamping rod and a second clamping rod, the first clamping rod and the second clamping rod are fixedly connected with a limiting block, the first clamping rod and the second clamping rod are rotationally connected with a limiting cross bar matched with the limiting block, the first clamping rod and the second clamping rod are rotationally connected through a pivot point, the pivot point is rotationally connected with a connecting rod, and the connecting rod is rotationally connected with a connecting block, and the connecting block is fixedly connected with the traction rope.

[0008] The principle of the basic technical solution is that after the device is ready, the fixed frame and the support column provide stable support for the whole, the limiting sleeve on the two support columns is moved to the preset height, the controller is electrically connected with the motor to control the operation of the motor, when the motor operates, the output shaft winds the traction rope, the traction rope drives the clamping assembly connected therewith to rise, the clamping assembly drives the weight to rise through the fixed ring, so that the weight is lifted to the predetermined height, and then the cross bar of the clamping assembly collides with the limiting sleeve, the two cross bars rotate around the first clamping rod and the second clamping rod respectively, the cross bar and the limiting block are separated, and at the same time the fixed ring and the weight extrude the free ends of the first clamping rod and the second clamping rod under the action of their own gravity, the first clamping rod and the second clamping rod rotate around the pivot point, and then the weight and the clamping assembly are separated, and then the weight freely falls under the action of gravity and impacts the top of the pile.

[0009] The beneficial effects of the basic technical solution are that through the cooperation of the fixed frame, the support column, the motor, the traction rope and the clamping assembly, the weight is stably lifted to the predetermined height, then the limiting between the cross bar and the limiting block is automatically opened through the cross bar touching the limiting sleeve, the weight and the clamping assembly are separated, the operation of the weight impacting the top of the pile is accurately and stably completed, and the accuracy and reliability of the high-strain test of the foundation pile are effectively improved.

[0010] Preferably, a scale line for recording height is marked on the support column.

[0011] Through the above setting, the operator sets the limiting sleeve at the predetermined position by observing the scale line on the support column, flexibly adjusts the falling height of the weight, and at the same time ensures that the weight falls at the same height every time, so as to ensure the consistency of the test conditions.

[0012] Preferably, a plurality of climbing handrails are fixedly connected on the support column, and the plurality of climbing handrails are evenly distributed on the support column.

[0013] Through the above setting, convenient climbing assistance is provided for the workers, when it is necessary to maintain, overhaul or debug the motor, the rotating wheel and other parts at a high position of the device, the workers can safely and stably climb to the required position by means of the evenly distributed climbing handrails, the convenience and safety of the operation are improved, and the continuous and stable operation of the device is ensured.

[0014] Preferably, the limiting sleeve is threadedly connected with a bolt, and the limiting sleeve is fixed and locked with the supporting column through the bolt.

[0015] Through the above setting, according to the test requirement, the position of the limiting sleeve on the supporting column is easily adjusted by rotating the bolt, and accurate positioning is realized. After the position is determined, the bolt is tightened to firmly lock the limiting sleeve with the supporting column, thereby ensuring the accuracy of the release height of the weight and effectively improving the precision and reliability of the high strain test of the foundation pile.

[0016] Preferably, a guide sliding groove is arranged on the supporting column.

[0017] Through the above setting, the cross rod of the clamping rod is arranged in the guide sliding groove, so that the clamping assembly is limited by the cross rod of the clamping device through the guide sliding groove during the falling of the clamping weight, thereby ensuring that the clamping assembly does not shake and deviate during the falling.

[0018] Preferably, the free end portions of the first clamping rod and the second clamping rod are both arc-shaped profiles.

[0019] Through the above setting, the first clamping rod and the second clamping rod can be smoothly opened under the action of the gravity of the fixing ring and the weight, thereby realizing the separation of the fixing ring and the clamping assembly. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Fig. 1 is a structural schematic view of the foundation pile high strain test device of the utility model;

[0021] Figure 2 Fig. 2 is an enlarged schematic view of A in Fig. 1; Figure 1 Fig. 3 is a schematic view of the clamping assembly in Fig. 1;

[0022] The names of the corresponding marks in the drawings are as follows: fixed frame 1, controller 2, supporting column 3, limiting sleeve 4, supporting platform 5, perforation 6, motor 7, rotating wheel 8, traction rope 9, first clamping rod 101, second clamping rod 102, limiting block 103, cross rod 104, pivot point 105, connecting rod 106, connecting block 107, fixing ring 11, weight 12, scale line 13, climbing handrail 14, bolt 15, guide sliding groove 16. DETAILED DESCRIPTION

[0023] The utility model will be further explained in detail in combination with the drawings and embodiments:

[0024] For example, Figures 1-2As shown, a kind of pile high strain testing device, including fixed frame 1, controller 2 is fixedly connected with fixed frame 1, two pieces of support column 3 are fixedly connected with the both sides symmetry of fixed frame 1, scale line 13 and guide sliding slot 16 are equipped on support column 3, support column 3 is fixedly connected with several evenly distributed climbing handrails 14, support column 3 is slidably connected with limit sleeve 4, limit sleeve 4 is fixedly locked with support column 3 by bolt 15, support column 3 is connected with support platform 5 with fixed frame 1, the center of support platform 5 is provided with perforation 6, support platform 5 is fixedly connected with motor 7 and rotating wheel 8, motor 7 is electrically connected with controller 2, the output shaft of motor 7 is wound with traction rope 9, traction rope 9 is connected with clamping assembly after passing through rotating wheel 8 and perforation 6 in turn, clamping assembly movably connects with fixed ring 11, fixed ring 11 is fixedly connected with weight 12;

[0025] Clamping assembly includes first clamping rod 101 and second clamping rod 102, the free end of first clamping rod 101 and second clamping rod 102 is arc profile, first clamping rod 101 and second clamping rod 102 are fixedly connected with limit block 103, first clamping rod 101 and second clamping rod 102 are rotatably connected with the limit block 103 matched limit cross bar 104, first clamping rod 101 and second clamping rod 102 are rotatably connected through pivot point 105, pivot point 105 is rotatably connected with connecting rod 106, connecting rod 106 is rotatably connected with connecting block 107, connecting block 107 is fixedly connected with traction rope 9.

[0026] Specific implementation process is as follows:

[0027] First, sliding limit sleeve 4, limit sleeve 4 is moved to preset height by scale line 13, and the fixed locking of limit sleeve 4 and support column 3 is completed by bolt 16 on limit sleeve 4 simultaneously;

[0028] Second, the motor 7 is operated by operating controller 2, so that the traction rope 9 wound on the output shaft of motor 7 drives the clamping assembly to ascend, and then the clamping assembly drives the weight 12 to ascend through the fixed ring 11;

[0029] Then, when the free end of the cross bar 104 of the ascending clamping assembly contacts the limit sleeve 4, the cross bar 104 rotates around the rotating point on the first clamping rod 101 or the second clamping rod 102, so that the cross bar 104 is separated from the limit block 103, and then the fixed ring 11 presses the free end of the first clamping rod 101 and the second clamping rod 102, so that the first clamping rod 101 and the second clamping rod 102 rotate around the pivot point 105 under the action of the gravity of the fixed ring 11 and the weight 12, and then the separation of the free end of the first clamping rod 101 and the second clamping rod 102 is realized, so that the fixed ring 11 is separated from the clamping assembly, and then the weight falls freely under the action of gravity and impacts the top of the pile.

[0030] Finally, the traction rope 9 is released by the motor 7, the traction rope 9 and the clamping assembly are dropped, the tested weight 12 and the fixing ring 11 are clamped and fixed by the clamping assembly, and the traction rope 9 is pulled again by the motor 7 to repeat the above process, so that the repeated test is realized.

[0031] The above is only an embodiment of the present application, and common technical solutions or characteristics in the scheme are not described in detail. It should be pointed out that, for those skilled in the art, without departing from the technical scheme of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicability of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A high strain pile testing apparatus, characterised in that: The utility model relates to a fixed frame (1) is connected with controller (2), and both sides symmetry fixed with two support column (3) of fixed frame (1), the support column (3) is connected with the support platform (5) of fixed frame (1) with the sliding connection of limiting sleeve (4) on the support column (3), the support platform (5) center is equipped with the perforation (6) of fixed platform (5), and the support platform (5) is fixedly connected with motor (7) and runner (8), and the motor (7) is electrically connected with controller (2), and the output shaft of motor (7) is wound with traction rope (9), and the traction rope (9) is connected with clamping assembly after passing runner (8) and perforation (6) in proper order, and the fixed ring (11) of clamping assembly swing joint is fixedly connected with weight (12); The clamping assembly includes a first clamping rod (101) and a second clamping rod (102), the first clamping rod (101) and the second clamping rod (102) are fixedly connected with a limiting block (103), the first clamping rod (101) and the second clamping rod (102) are rotatably connected with a limiting cross bar (104) matched with the limiting block (103), the first clamping rod (101) and the second clamping rod (102) are rotatably connected through a pivot point (105), the pivot point (105) is rotatably connected with a connecting rod (106), the connecting rod (106) is rotatably connected with a connecting block (107), and the connecting block (107) is fixedly connected with the traction rope (9).

2. A high strain testing apparatus for piles according to claim 1, wherein: The support column (3) is marked with a scale line (13) for recording height.

3. A high strain testing apparatus for piles according to claim 1, wherein: The support column (3) is fixedly connected with a plurality of climbing handrails (14), and the plurality of climbing handrails (14) are evenly distributed on the support column (3).

4. A high strain pile testing apparatus as claimed in claim 1, wherein: The limiting sleeve (4) is threadedly connected with a bolt (15), and the limiting sleeve (4) is fixedly locked with the support column (3) through the bolt (15).

5. A high strain pile testing apparatus as claimed in claim 1, wherein: The support column (3) is provided with a guide chute (16).

6. A high strain pile testing apparatus as claimed in claim 1, wherein: The free end portions of the first clamping rod (101) and the second clamping rod (102) are arc-shaped.

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