Automatic take-up and pay-off device for pile foundation detection

Abstract

The utility model discloses an automatic take-up and pay-off device for pile foundation detection, which comprises a planetary gear box body, a sun gear and a planetary gear which are meshed with each other are arranged in the planetary gear box body, and a wire spool mounting hole is arranged on a cover plate at the top of the planetary gear box body. A wire spool connecting rod is connected in the wire spool mounting hole through a wire spool supporting rod and a rotatable connecting rod, a compression spring and a wire spool are sequentially arranged on the wire spool connecting rod in a sleeving manner, and the top end of the wire spool connecting rod penetrates through the wire spool and is locked at the end part through a nut; a guide wheel support and a servo motor are arranged on the cover plate, an output shaft of the servo motor is connected with the sun wheel, and the servo motor is connected with the double-control foot switch through electric signals. Two wire shaft supports are symmetrically arranged on the top of the guide wheel support, and wire shafts are connected between the wire shaft supports and on the tops of the wire shaft supports. The whole device has the advantages of flexible take-up and pay-off, high bearing capacity and the like, take-up and pay-off can be carried out simultaneously by arranging the multiple wire spools, the practicability is high, and the efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of pile foundation detection equipment, in particular to an automatic wire winding and unwinding device for pile foundation detection. Background Technique

[0002] During the pile foundation construction process, in order to detect the integrity of the pile body in the later stage, the acoustic wave transmission method is generally used to detect the integrity of the pile body of the cast-in-place concrete pile, that is, the acoustic wave detector is used to detect the acoustic parameters of the acoustic wave passing through each cross-section of the pile body point by point at a certain interval along the longitudinal axis direction of the pile, and then these detection data are processed, analyzed and judged to determine the position, range and degree of the concrete defects in the pile body, so as to infer the continuity, integrity and uniformity of the pile body concrete and evaluate the integrity grade of the pile body.

[0003] Specifically, by embedding acoustic detection tubes in the pile body, after the cement concrete hardens in the later stage, the electromagnetic wave probe is connected by a cable and inserted into the acoustic detection tube to detect the height of the pile body, that is, by collecting the electromagnetic wave and reflection curve emitted by the electromagnetic wave probe to judge the integrity of the pile body. According to the measured height of the pile body, the current common cable length is about 100m. During the detection, the process of winding and unwinding the cable is carried out by manually rotating the wire winding wheel. Moreover, there are many acoustic detection tubes embedded in the pile foundation, and it is required to carry out the winding and unwinding processes simultaneously. Inevitably, the cable wires will be intertwined and knotted during manual rotation, and when the winding and unwinding processes are carried out simultaneously, a large number of operators are required, resulting in low winding and unwinding efficiency. Content of the Utility Model

[0004] The utility model provides an automatic wire winding and unwinding device for pile foundation detection, aiming to solve the problems that the cable wires will be intertwined and knotted and the winding and unwinding efficiency is low when manually rotating the wire winding wheel for winding and unwinding.

[0005] To achieve its purpose, the utility model adopts the following technical scheme:

[0006] An automatic wire winding and unwinding device for pile foundation detection, comprising a planetary gear box body. At the center of the inner cavity of the planetary gear box, there is a sun gear. A number of groups of planetary gears are meshed and connected to the outer periphery of the sun gear. A cover plate is provided on the top of the planetary gear box body; on the cover plate, there are wire winding disc mounting holes corresponding to the planetary gears. At the center of the cover plate, a frame-type guide wheel support is vertically provided. On the cover plate inside the guide wheel support, there is a servo motor, and the output shaft of the servo motor is connected to the sun gear; at the top of the guide wheel support, two wire guide shaft supports are symmetrically provided. Between the wire guide shaft supports and at the top of the wire guide shaft supports, wire guide shafts are connected; the planetary gears are connected to the bottom ends of the wire winding disc support rods arranged in the wire winding disc mounting holes. The top ends of the wire winding disc support rods are rotatably connected to the bottom ends of the rotatable connecting rods. The top ends of the rotatable connecting rods are connected to the bottom ends of the wire winding disc connecting rods. A compression spring and a wire winding disc are sequentially sleeved on the wire winding disc connecting rods. The top end of the wire winding disc connecting rod penetrates through the wire winding disc and is locked at the end by a nut; the automatic wire winding and unwinding device for pile foundation detection further comprises a dual-control foot switch, and the dual-control foot switch is connected to the servo motor through an electrical signal.

[0007] Further, the planetary gear box body is cylindrical.

[0008] Further, legs are hinged to the bottom of the planetary gear box body.

[0009] Further, the legs are four foldable legs, and the bottoms of the legs are inclined outwards.

[0010] Further, both the planetary gears and the wire winding disc mounting holes are six groups, and all the wire winding disc mounting holes are equidistantly arranged on the same circular arc line of the cover plate.

[0011] Further, rolling bearings are provided inside the wire guide shafts.

[0012] Further, through holes are provided at both ends and the middle top of the wire guide shaft supports, and all the wire guide shafts are connected to the wire guide shaft supports through wire guide shaft mounting pins inserted into the through holes.

[0013] Further, the nut is a tapered fastening nut.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. The automatic wire winding and unwinding device for pile foundation detection provided by the present utility model has the advantages of flexible wire winding and unwinding, strong bearing capacity, etc. Moreover, multiple wire winding discs are provided to enable wire winding and unwinding simultaneously, with strong practicability. The servo motor and the planetary gear set form the main power output unit. The dual-control foot switch sends a signal to control the servo motor to achieve forward and reverse rotation, driving the wire winding discs connected to the planetary gear set to rotate, thereby completing the wire unwinding action, with a high degree of automation.

[0016] 2. Inside the planetary gear box of the present utility model, there is a main sun gear and six groups of attached planetary gears. The planetary gears drive the connected wire reels to rotate synchronously, which can ensure that the pile foundation detection probes are in the same plane. Moreover, the forward and reverse rotation of the servo motor can timely adjust the probes that are not in the same plane. During use, the number of planetary gears and wire reels can be flexibly increased or decreased according to actual needs, and the efficiency of winding and unwinding the wire is high.

[0017] 3. Each wire reel of the present utility model is independently configured, which is convenient to replace when the equipment is damaged. And there is an included angle between the wire reel and the wire reel support rod. This design enables the wire reel to run in an "8" shape around itself during operation, playing a role in arranging the cable. The design is simple, without adding other additional cable arranging structures, with low manufacturing cost, and reducing the problems of mutual wire pressing and tying among the cables during the later use process.

[0018] 4. The automatic wire winding and unwinding device for pile foundation detection provided by the present utility model can work by being connected to the input power of a lithium battery outdoor power supply or an engineering vehicle power supply. It has the characteristics of being convenient to carry and flexible to use. The configured double-control foot switch can be adjusted according to the real-time wire winding and unwinding process, which is convenient and fast. A meter counting device is added for wire winding, which can effectively measure the length of the pile foundation. The four-axis guide wheels provided on the wire shaft support can adjust the cable line type before the cable enters the wire winding shaft, playing a role in positioning and guiding the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the front view of the automatic wire winding and unwinding device for pile foundation detection of the present utility model;

[0020] Figure 2 is Figure 1 the left view of

[0021] Figure 3 is Figure 1 the top view of

[0022] In the figure: 1 - planetary gear box; 2 - cover plate; 3 - servo motor; 4 - guide wheel support; 5 - wire shaft support; 6 - wire shaft; 7 - wire shaft mounting pin; 8 - wire reel support rod; 9 - rotatable connecting rod; 10 - compression spring; 11 - wire reel connecting rod; 12 - wire reel; 13 - nut; 14 - leg; 15 - double-control foot switch; 16 - wire reel mounting hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further describes the present utility model with reference to the drawings:

[0024] As Figures 1-3As shown in the figure, the utility model is an automatic wire winding and unwinding device for pile foundation detection, including a cylindrical planetary gear box body 1. Four foldable legs 14 are hinged at the bottom of the planetary gear box body 1. The bottoms of the legs 14 incline outwards. When the equipment is carried and used, the legs 14 can be folded, which is convenient for carrying and storage, and also convenient for maintenance and replacement. A sun gear is arranged at the center of the inner cavity of the planetary gear box body 1. Six groups of planetary gears are meshed and connected to the outer periphery of the sun gear. The top of the planetary gear box body 1 is connected with a cover plate 2 by M5 screws. Six wire winding disc mounting holes 16 corresponding to the planetary gears are arranged on the cover plate 2, and the wire winding disc mounting holes 16 are equidistantly arranged on the same arc line of the cover plate 2. A frame-type guide wheel support 4 is vertically welded at the center of the cover plate 2. A servo motor 3 is connected to the cover plate 2 inside the guide wheel support 4 by M5 screws, and the output shaft of the servo motor 3 is fixedly connected with the sun gear in the planetary gear box body 1 by a pin. Two milling-machined wire guiding shaft supports 5 are symmetrically welded at the top of the guide wheel support 4. A total of four wire guiding shafts 6 are connected between the wire guiding shaft supports 5 and at the top of the wire guiding shaft supports 5. Specifically, through holes with a diameter of 10 mm are reserved at both ends and in the middle of the wire guiding shaft supports 5 for installing wire guiding shaft mounting pins 7. All the wire guiding shafts 6 are connected and fixed to the wire guiding shaft supports 5 by inserting the wire guiding shaft mounting pins 7 into the through holes, and rolling bearings are arranged inside the wire guiding shafts 6 to play a role in guiding and adjusting the cable during use.

[0025] The planetary gear is connected to the bottom end of a wire winding disc support rod 8 arranged in the wire winding disc mounting hole 16. The top end of the wire winding disc support rod 8 is connected to the bottom end of a rotatable connecting rod 9 by a bolt, and the rotatable connecting rod 9 can be adjusted in angle along the wire winding disc support rod 8 according to the wire winding situation. The top end of the rotatable connecting rod 9 is connected to the bottom end of a wire winding disc connecting rod 11 by a bolt. A compression spring 10 and a wire winding disc 12 are sequentially sleeved on the wire winding disc connecting rod 11. The compression spring 10 positions and buffers the wire winding disc 12. The top end of the wire winding disc connecting rod 11 penetrates through the wire winding disc 12 and is locked at the end by a nut 13. The used nut 13 is a tapered fastening nut. When winding and unwinding the wire, the nut 13 and the compression spring 10 act on each other to position and fix the wire winding disc 12, ensuring that the wire winding disc 12 does not rotate self, and ensuring the consistency of the wire winding and unwinding process of the wire winding disc 12.

[0026] The automatic wire winding and unwinding device for pile foundation detection further includes a double-control foot switch 15, which is a standard part and has the advantage of modular installation. The double-control foot switch 15 is electrically connected to the signal input end of the servo motor 3 through an electric signal to achieve the purpose of remotely controlling the start and stop of the servo motor 3. After receiving the signal, the servo motor 3 starts to rotate, driving the sun gear in the planetary gear box body 1 to rotate, and the sun gear then provides power for the six groups of planetary gears to rotate.

[0027] Before using the automatic wire winding and unwinding device provided by this application, first detect whether the pile foundation acoustic logging tubes are unobstructed. Number the measured acoustic logging tubes clockwise in the due north direction, measure and record the distance between the acoustic logging tubes, use a vernier caliper to measure the outer diameter, inner diameter, and wall thickness of the acoustic logging tubes, and the probe diameter. Then level the ground, place the automatic wire winding and unwinding device of this application at the center position of the pile foundation inspection acoustic logging tube, open the support legs 14, and ensure that the device is placed stably without shaking. Since the number of acoustic logging tubes to be detected this time is three, three wire reels 12 are correspondingly selected and placed into the wire reel mounting holes 16. The cable ends of each wire reel 12 are all equipped with transducers.

[0028] When unwinding the wire, pass the cable end of the wire reel 12 with the transducer through the gap between the wire guide shafts 6 and gently place it into the acoustic logging tube. Then use the two-way foot switch 15 to control the rotation of the servo motor 3 to unwind the wire. The unwinding length is 2 m longer than the length of the pile foundation. The servo motor 3 drives the sun gear in the planetary gear housing 1 to rotate, and the sun gear then provides power for the six groups of planetary gears to rotate, driving the wire reel support rod 8 to rotate, and then driving the wire reel 12 to start running in an "8" shape, so as to achieve the purpose of unwinding the wire. When the transducer touches the bottom of the acoustic logging tube lightly, record the length of the wire released and record it. Check whether the lowering depths of the three transducers are equal to ensure that the three transducers are on the same horizontal plane.

[0029] When winding the wire, place a tripod between the automatic wire winding and unwinding device of this application and the transducer and keep it level. Start pulling the cable to wind the wire at the same time. While winding the wire, step on the two-way foot switch 15 to make the wire reel 12 rotate simultaneously to carry out the automatic cable winding process. During the winding process, the tester pulls the cable at the same speed as the rotation speed of the automatic wire winding and unwinding device of this application to ensure simultaneous operation. During the winding process, observe whether there is wire pressing when the wire reel 12 winds the wire. If there is a wire pressing problem, rotate the rotatable connecting rod 9 to adjust the angle between the wire reel support rod 8 and the rotatable connecting rod 9, and change the wire laying method by fixing with a fastening bolt. After the detection is completed, remove the wire reel 12, and the wire winding and unwinding process is completed.

Claims

1. An automatic wire-retracting and releasing device for pile foundation detection, characterized in that: The invention comprises a planetary gear housing (1), wherein a sun gear is provided at the center of the inner cavity of the planetary gear housing (1), and a plurality of sets of planetary gears are meshedly connected to the outer periphery of the sun gear, and a cover plate (2) is provided at the top of the planetary gear housing (1); a winding disk mounting hole (16) corresponding to the planetary gear is provided on the cover plate (2), and a frame-type guide wheel bracket (4) is vertically provided at the center of the cover plate (2); a servo motor (3) is provided on the cover plate (2) inside the guide wheel bracket (4), and the output shaft of the servo motor (3) is connected to the sun gear; two wire shaft brackets (5) are symmetrically provided at the top of the guide wheel bracket (4), and the wire shaft brackets (5) are connected to each other and to the top of the wire shaft bracket (5). A wire shaft (6) is provided; the planetary gear is connected to the bottom end of a winding disk support rod (8) arranged in a winding disk installation hole (16); the top end of the winding disk support rod (8) is rotatably connected to the bottom end of a rotatable connecting rod (9); the top end of the rotatable connecting rod (9) is connected to the bottom end of a winding disk connecting rod (11); a compression spring (10) and a winding disk (12) are sequentially sleeved on the winding disk connecting rod (11); the top end of the winding disk connecting rod (11) passes through the winding disk (12) and is locked at the end by a nut (13); the pile foundation detection automatic wire retracting and releasing device also includes a double-control foot switch (15); the double-control foot switch (15) is connected to the servo motor (3) through an electrical signal.

2. The automatic wire-retracting and releasing device for pile foundation detection according to claim 1, characterized in that: The planetary gear housing (1) is cylindrical.

3. The automatic wire-retracting and releasing device for pile foundation detection according to claim 2, characterized in that: A support leg (14) is hingedly connected to the bottom of the planetary gear housing (1).

4. The automatic wire-retracting and releasing device for pile foundation detection according to claim 3, characterized in that: The supporting legs (14) are four foldable supporting legs, and the bottoms of the supporting legs (14) are inclined outwards.

5. The automatic wire-retracting and releasing device for pile foundation detection according to claim 4, characterized in that: The planetary gear and winding disk mounting holes (16) are each provided in six groups, and all the winding disk mounting holes (16) are equidistantly arranged on the same arc line of the cover plate (2).

6. The automatic wire-retracting and releasing device for pile foundation detection according to claim 5, characterized in that: A rolling bearing is arranged inside the conductor shaft (6).

7. The automatic wire-retracting and releasing device for pile foundation detection according to claim 6, characterized in that: Through holes are provided at both ends and the top of the middle of the wire shaft support (5), and all wire shafts (6) are connected to the wire shaft support (5) via wire shaft mounting pins (7) inserted into the through holes.

8. An automatic wire-retracting and releasing device for pile foundation detection according to any one of claims 1 to 7, characterized in that: The nut (13) is a conical fastening nut.

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