Drop hammer height adjusting device for pile foundation high strain detection

Abstract

The utility model discloses a drop hammer height adjusting device for pile foundation high strain detection, which comprises a device frame, a lifting assembly and an elevation assembly, a through hole is arranged in the middle of the top wall of the device frame, one part of the lifting assembly penetrates through the through hole, a drop hammer assembly is arranged below the lifting assembly, and the elevation assembly is arranged below the drop hammer assembly. One part of the elevation assembly is mounted on the drop hammer assembly, a base is mounted at one end of the limiting block through a mounting bolt and a mounting hole in a matched manner, and the limiting block is in sliding connection with the guide groove; the problem that in the prior art, although a height adjusting device can replace a manual operation mode and improve the safety of the device in the using process, the specific lifting height of the drop hammer cannot be known when the drop hammer is lifted through a winding motor in the using process, and therefore errors are large in multiple times of detection is easily caused is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to high strain detection technical field, concretely related to a drop height adjusting device for pile foundation high strain detection. BACKGROUND

[0002] High strain detection is a kind of detection method for judging the vertical compressive bearing capacity of single pile and pile integrity, when experiment, the speed and force time history curve of pile top are measured by using heavy hammer to impact pile top, and it is analyzed by wave theory.

[0003] According to the search, the drop height adjusting device for pile foundation high strain detection disclosed in the publication (announcement) No. CN217078890U, this technology discloses "including frame, the top of drop hammer is fixedly provided with symmetrically distributed fixed rod, the both ends in the inside of lifting seat are rotatably provided with connecting shaft, the outside of connecting shaft is fixedly provided with hook, the outside of connecting shaft is fixedly provided with profile gear, the inside of lifting seat top is rotatably provided with bidirectional screw rod, the both ends of bidirectional screw rod outside are all screw-connected with rack, rack is fixedly provided with limit slide block, the top of lifting seat is provided with limit sliding slot. Through setting fixed rod on the top of drop hammer, under the action of connecting shaft, profile gear, bidirectional screw rod, rack, limit slide block, limit sliding slot and driving motor, hook is clamped in the bottom of fixed rod, thereby automatically connecting between drop hammer and lifting seat, and the effect of automatically releasing drop hammer is achieved, which replaces manual operation mode and improves the safety of the device".

[0004] But the drop height adjusting device for pile foundation high strain detection has the following shortcomings:

[0005] 1, the height adjusting device in the patent can replace manual operation mode and improve the safety of the device when in use, but when drop hammer is lifted by winding motor in the process of use, the specific lifting height of drop hammer cannot be known, so that the error is large when detecting multiple times.

[0006] To solve the above problems, a drop height adjusting device for pile foundation high strain detection is provided in the present application. UTILITY MODEL CONTENTS

[0007] In view of the problems in the related art, the utility model provides a drop height adjusting device for pile foundation high strain detection, which can conveniently observe the specific height of drop hammer, reduce the error caused by different heights when detecting multiple times, and further improve the detection precision.

[0008] Therefore, the specific technical scheme adopted by the utility model is as follows:

[0009] The utility model provides a height adjusting device of drop hammer for pile foundation high strain detection, including device frame, lifting assembly and elevation assembly, the top wall middle part of device frame is equipped with through -hole, the lifting assembly is passed through a department in through -hole, the drop hammer assembly is installed under the lifting assembly, and one department of elevation assembly is installed on the drop hammer assembly;

[0010] The elevation assembly includes height scales installed on the outer walls of guide slots in the device frame, pointers used in conjunction with the height scales installed between the two height scales, the pointers installed on the outer walls of bases, the bases installed on one part of the drop hammer assembly through mounting bolts, and the guide slots outside the guide slots in the left and right inner cavities of the device frame.

[0011] As a further scheme of the utility model, the lifting assembly includes a lifting seat, guide blocks fixedly installed on the outer walls of the left and right ends of the lifting seat, the guide blocks in sliding connection with the guide slots, and an electromagnetic suction disc installed at the bottom end of the lifting seat.

[0012] As a further scheme of the utility model, a lifting ring is installed at the middle part of the upper end face of the lifting seat, one end of a rope is installed in the lifting ring, the other end of the rope is wound on a winding roller after passing through the through hole, the winding roller is rotatably installed in the equipment rack, and a winding motor is in transmission connection with the winding roller at one end thereof after passing through the equipment rack.

[0013] As a further scheme of the utility model, the winding motor is installed on a fixing seat, and the fixing seat is installed on the outer wall at the top end of the device frame.

[0014] As a further scheme of the utility model, the drop hammer assembly includes a hammer body, a suction disc seat installed on the upper end face of the hammer body, the suction disc seat used in conjunction with the electromagnetic suction disc, and limiting blocks fixedly installed on the left and right side walls of the hammer body.

[0015] As a further scheme of the utility model, mounting holes are formed in the limiting blocks, mounting bolts are installed in the mounting holes, and bases are installed at one end of the limiting blocks in cooperation with the mounting bolts and the mounting holes.

[0016] As a further scheme of the utility model, the limiting blocks are in sliding connection with the guide slots.

[0017] The utility model has the beneficial effects that:

[0018] The utility model discloses a device frame, lifting assembly and elevation assembly cooperate work when needing to lift the hammer body, winding motor works, drives winding roller rotation, makes the rope drop, in turn drives the lifting seat and electromagnetic chuck downward motion to the chuck seat on the hammer body, subsequently electromagnetic chuck energization is connected with the chuck seat, then winding motor reverse operation drives winding roller reverse rotation, makes the rope lift, in turn through the lifting seat drives the hammer body upward motion, in this process, the pointer in elevation assembly moves along the height scale, can therefore directly observe the height that the hammer body is at in real time, makes the device can reduce the error caused by the different height when detecting for many times, can enhance the detection accuracy in further place. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment, obviously, the drawing in the following description only is some embodiments of the utility model, for ordinary skilled person in the art, can obtain other drawings according to these drawings without the creative labor.

[0020] Figure 1 It is the whole structure schematic diagram of a kind of drop hammer height adjusting device for pile foundation high strain detection according to the utility model embodiment;

[0021] Figure 2 It is the height scale and pointer cooperation schematic diagram of a kind of drop hammer height adjusting device for pile foundation high strain detection according to the utility model embodiment;

[0022] Figure 3 It is the base and limit block cooperation schematic diagram of a kind of drop hammer height adjusting device for pile foundation high strain detection according to the utility model embodiment;

[0023] Figure 4 It is the winding motor and winding roller schematic diagram of a kind of drop hammer height adjusting device for pile foundation high strain detection according to the utility model embodiment;

[0024] Figure 5 It is the hammer body lifting state schematic diagram of a kind of drop hammer height adjusting device for pile foundation high strain detection according to the utility model embodiment.

[0025] In the drawing:

[0026] 1, device frame; 2, lifting assembly; 21, lifting seat; 22, guide block; 23, electromagnetic chuck; 24, lifting ring; 25, rope; 26, winding roller; 27, winding motor; 28, fixed seat; 3, elevation assembly; 4, through hole; 5, drop hammer assembly; 51, hammer body; 52, chuck seat; 53, limiting block; 54, mounting hole; 6, height scale; 7, guide groove; 8, pointer; 9, base; 10, mounting bolt. DETAILED DESCRIPTION

[0027] To further illustrate the embodiments, the utility model provides drawings, these drawings are part of the utility model disclosure, it mainly used to illustrate the embodiment, and can cooperate with the related description of the specification to explain the operation principle of the embodiment, cooperate with reference to these contents, the person skilled in the art should be able to understand other possible implementation ways and the advantages of the utility model, the components in the drawing are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0028] According to the embodiment of the utility model, a drop hammer height adjusting device for pile foundation high strain detection is provided.

[0029] Please refer to the description of the drawings Figures 1-5 According to the drop hammer height adjusting device for pile foundation high strain detection provided by the embodiment of the utility model, the device frame 1, the lifting assembly 2 and the elevation assembly 3 are provided, the through hole 4 is formed in the middle of the top wall of the device frame 1, one part of the lifting assembly 2 penetrates through the through hole 4, the drop hammer assembly 5 is installed below the lifting assembly 2, and one part of the elevation assembly 3 is installed on the drop hammer assembly 5; the elevation assembly 3 comprises the height scale 6, the height scale 6 is installed on the outer wall of the guide groove 7 in the device frame 1, the pointer 8 used in cooperation with the height scale 6 is installed between the two height scales 6, the pointer 8 is installed on the outer wall of the base 9, the base 9 is installed on one part of the drop hammer assembly 5 through the mounting bolt 10, and the elevation assembly 3 is symmetrically arranged outside the guide groove 7 in the left and right inner cavities of the device frame 1. Through the cooperation of the device frame 1, the lifting assembly 2 and the elevation assembly 3, when the hammer body 51 needs to be lifted, the winding motor 27 works, drives the winding roller 26 to rotate, makes the rope 25 descend, then drives the lifting seat 21 and the electromagnetic chuck 23 to move downward to the chuck seat 52 on the hammer body 51, then the electromagnetic chuck 23 is powered on and connected with the chuck seat 52, then the winding motor 27 works reversely, drives the winding roller 26 to rotate reversely, makes the rope 25 lift, then drives the hammer body 51 to move upward through the lifting seat 21, in the process, the pointer 8 in the elevation assembly 3 moves along the height scale 6, so that the height of the hammer body 51 can be directly observed in real time, so that the device can reduce the error caused by different heights during multiple detections, and then the detection accuracy can be improved.

[0030] In an embodiment, please refer to the attached drawings of the specification Figure 1 、 Figure 4 and Figure 5 , as a further scheme of the utility model, the lifting assembly 2 includes lifting seat 21, the left and right two ends of the outer wall of lifting seat 21 are fixedly installed with guide block 22, guide block 22 is slidably connected with guide groove 7, the bottom end of lifting seat 21 is installed with electromagnetic chuck 23, the upper end surface of lifting seat 21 is installed with lifting ring 24 in the middle, one end of rope 25 is installed in lifting ring 24, the other end of rope 25 is wound on winding roller 26 after passing through through-hole 4, winding roller 26 is rotatably installed in equipment frame, one end of winding roller 26 is drivingly connected with winding motor 27 after passing through equipment frame, winding motor 27 is installed on fixed seat 28, fixed seat 28 is installed on the top outer wall of device frame 1. When using, winding motor 27 works, lifting seat 21 is driven upward or downward by winding roller 26, rope 25 and lifting ring 24, that is, electromagnetic chuck 23 and chuck seat 52 can be conveniently cooperated.

[0031] In an embodiment, please refer to the attached drawings of the specification Figure 1 、 Figure 2 、 Figure 3 and Figure 5 , as a further scheme of the utility model, the falling hammer assembly 5 includes hammer body 51, chuck seat 52 is installed on the upper end surface of hammer body 51, chuck seat 52 is used in cooperation with electromagnetic chuck 23, limit block 53 is fixedly installed on the left and right side walls of hammer body 51, mounting hole 54 is formed in limit block 53, mounting bolt 10 is installed in mounting hole 54, base 9 is installed on one end of limit block 53 through mounting bolt 10 and mounting hole 54, limit block 53 is slidably connected with guide groove 7. When using, base 9 is installed on one end of limit block 53 through mounting bolt 10, then chuck seat 52 is used in cooperation with electromagnetic chuck 23 in lifting assembly 2, which can conveniently lift hammer body 51 to the predetermined height.

[0032] Workflow: when the hammer body 51 needs to be lifted, the winding motor 27 works to drive the winding roller 26 to rotate, so that the rope 25 is lowered, and then the lifting seat 21 and the electromagnetic suction cup 23 are moved downward to the suction cup seat 52 on the hammer body 51, then the electromagnetic suction cup 23 is powered on and connected with the suction cup seat 52, then the winding motor 27 works in reverse to drive the winding roller 26 to rotate in reverse, so that the rope 25 is lifted, and then the hammer body 51 is moved upward through the lifting seat 21, in the process, the pointer 8 in the height assembly 3 moves along the height scale 6, so that the height of the hammer body 51 can be observed in real time, when the hammer body 51 is lifted to the predetermined height, the winding motor 27 stops, the electromagnetic suction cup 23 is powered off, then the hammer body 51 is free falling downward, and the pile foundation detection work can be carried out, after one time, the above working process is continued, and the height scale 6 and the pointer 8 cooperate to facilitate the calibration of the lifting height of the hammer body 51, so that the error caused by different heights can be reduced, and then the detection accuracy can be improved.

[0033] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A drop hammer height adjustment device for pile foundation high strain detection, comprising a device frame (1), a lifting assembly (2) and a height marking assembly (3), characterized in that: The top wall of the device frame (1) is provided with a through hole (4), a part of the lifting assembly (2) is arranged in the through hole (4), a drop hammer assembly (5) is arranged below the lifting assembly (2), and a part of the elevation assembly (3) is arranged on the drop hammer assembly (5). The elevation assembly (3) comprises height scales (6), the height scales (6) are arranged on the outer walls of guide grooves (7) in the device frame (1), a pointer (8) is arranged between the height scales (6) and used in cooperation with the height scales (6), the pointer (8) is arranged on the outer wall of a base (9), the base (9) is arranged on a part of the drop hammer assembly (5) through mounting bolts (10), and the elevation assembly (3) is symmetrically arranged outside the guide grooves (7) in the left and right cavities of the device frame (1).

2. The drop hammer height adjusting device for pile foundation high strain detection according to claim 1, characterized in that: The lifting assembly (2) comprises a lifting base (21), guide blocks (22) are fixedly arranged on the outer walls of the left and right ends of the lifting base (21), the guide blocks (22) are slidably connected with the guide grooves (7), and an electromagnetic suction disc (23) is arranged at the bottom end of the lifting base (21).

3. The drop height adjustment device for high strain dynamic testing of pile foundations according to claim 2, characterized in that: A lifting ring (24) is arranged at the upper end of the lifting base (21), one end of a rope (25) is arranged in the lifting ring (24), the other end of the rope (25) is wound on a winding roller (26) after penetrating through the through hole (4), the winding roller (26) is rotatably arranged in the equipment frame, and one end of the winding roller (26) is drivingly connected with a winding motor (27) after penetrating through the equipment frame.

4. The drop height adjustment device for high strain dynamic testing of pile foundations according to claim 3, characterized in that: The winding motor (27) is arranged on a fixing base (28), and the fixing base (28) is arranged on the top end of the device frame (1).

5. The drop height adjustment device for high strain dynamic testing of pile foundations according to claim 2, characterized in that: The drop hammer assembly (5) comprises a hammer body (51), a suction disc base (52) is arranged on the upper end of the hammer body (51), the suction disc base (52) is used in cooperation with the electromagnetic suction disc (23), and limiting blocks (53) are fixedly arranged on the left and right side walls of the hammer body (51).

6. The drop height adjustment device for high strain dynamic testing of pile foundations according to claim 5, characterized in that: Mounting holes (54) are arranged in the limiting blocks (53), mounting bolts (10) are arranged in the mounting holes (54), and the base (9) is arranged on one end of the limiting blocks (53) through the mounting bolts (10) and the mounting holes (54).

7. The drop height adjustment device for high strain dynamic testing of pile foundations according to claim 6, characterized in that: The limiting blocks (53) are slidably connected with the guide grooves (7).

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