A high-frequency excitation type pile foundation acoustic detection tube inner wall rust removal device and use method

Abstract

The present invention discloses a high-frequency excitation type pile foundation acoustic detection tube inner wall rust removal device and a method of use, which belongs to the technical field of acoustic detection tube rust removal, and solves the technical problem that when performing rust removal operations on acoustic detection tubes, knocking or inserted steel bar friction rust removal methods are often used, and the rust removal effect is not ideal and the inner wall of the acoustic detection tube is easily damaged. It includes a device outer shell, the outer shell is provided with expandable side walls opposite to each other in the length direction, and the inside of the expandable side wall is provided with an exciter for generating excitation; the inside of the outer shell is also provided with a side wall retractable structure, and the side wall retractable structure includes a side wall top opening device movably connected to the expandable side wall, a contraction spring, and a driving motor for driving the side wall top opening device, and the two ends of the contraction spring are connected to the expandable side wall. The high-frequency excitation type pile foundation acoustic detection tube inner wall rust removal device provided by the present invention can better complete the rust removal work on the inner wall of the pile foundation acoustic detection tube, has high rust removal efficiency, and is easy to use.

Description

Technical Field

[0001] The invention relates to the technical field of rust removal of acoustic detection tubes, and in particular to a high-frequency excitation type rust removal device for the inner wall of an acoustic detection tube for a pile foundation. Background Art

[0002] The sonic detection tube refers to the sonic wave detection tube. The quality of a pile can be detected by using the sonic detection tube. The sonic detection tube is the channel for the probe to enter the pile body when the ultrasonic detection method is used for the cast-in-place pile. It is an important part of the ultrasonic detection system for cast-in-place piles. Its pre-embedded method in the pile and its layout on the cross section of the pile will directly affect the detection results. The pile foundation has particularly strict requirements on the sealing, impermeability, tensile strength, torque resistance, and compression resistance of the sonic detection tube when the concrete is poured. Any carelessness in production and installation will cause pipe blockage, leakage or pipe deformation, and the pile foundation detection will not be completed. On-site welding cannot detect the sealing of the pipe wall, interface and pipe bottom, so the anti-leakage performance is difficult to guarantee. The sonic detection tube produced by our company is strictly controlled by a dedicated person from the purchase of raw materials. It undergoes multiple tests before and after production. After the product is formed, it needs to go through three testing processes, namely initial inspection, gas inspection, and water inspection. Ensure that the product qualification rate is 100%, thereby ensuring the pile foundation inspection requirements. The surface of the metal acoustic detection tube will rust after being placed and stored for a long time. When using it, the surface of the metal acoustic detection tube needs to be derusted, and the rust stains will affect the detection data and results and affect the structural quality.

[0003] The applicant has found that the prior art has at least the following technical problems:

[0004] In the prior art, rust removal by percussion or steel bar friction is often used, but the rust removal effect is not ideal and may even scratch the inner wall of the acoustic detection tube, affecting the detection result. Summary of the invention

[0005] The object of the present invention is to provide a high-frequency excitation type pile foundation acoustic detection tube inner wall rust removal device to solve the technical problem of low rust removal efficiency in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides a high-frequency vibration-type pile foundation acoustic detection tube inner wall rust removal device, comprising an outer shell of the device, characterized in that the outer shell is provided with expandable side walls opposite to each other in the length direction, and an exciter for generating excitation is provided inside the expandable side walls; a side wall retracting structure is also provided inside the outer shell, and the side wall retracting structure comprises a side wall opening device movably connected to the expandable side wall, a contraction spring and a driving motor for driving the side wall opening device, and the driving motor and the exciter are electrically connected to a control system.

[0008] Optionally or preferably, conical structures are provided at both ends of the outer shell in the length direction, and a steel wire jacket is provided on the surface of the outer shell.

[0009] Optionally or preferably, the expandable side wall adopts a closed hollow structure with a trapezoidal cross-section, which is symmetrically arranged on both sides of the outer shell in the length direction, and the middle part is connected to a contraction spring for generating tension; a plurality of exciters, drive motors and pressure sensing devices are symmetrically arranged inside the expandable side wall.

[0010] Optionally or preferably, the pressure sensing device is a pressure sensor.

[0011] Optionally or preferably, the side wall opening device includes a push rod 1, a push rod 2 and a rack 1, a rack 2, and pulleys are provided at both ends of the push rod and the push rod 2 connected to the expandable side wall; the side wall opening device is arranged at two ends of the outer shell opposite to each other, and the rack 1 and the rack 2 are staggered and connected in the middle by a gear.

[0012] Optionally or preferably, a driving rod is connected in the middle of the driving motor, and a gear is connected to the driving rod. The gear is used to make the side wall unfolding devices arranged opposite to each other move in the same direction or in the opposite direction.

[0013] Optionally or preferably, the drive motor, the vibrator and the pressure sensor are electrically connected to a control system via connecting wires.

[0014] The present invention provides a method for removing rust from the inner wall of a pile foundation acoustic detection tube, which is characterized in that the high-frequency excitation type pile foundation acoustic detection tube inner wall rust removal device described in any one of claims 1 to 7 is used to perform rust removal work, and after the device is adjusted to a specific working height through the connecting line, an electrical signal instruction is sent through the control system to start the drive motor to make the expandable side wall fit on the inner wall of the acoustic detection tube, and the exciter is started to work; after the work is completed, the drive motor is reversed by adjusting the control system again to retract the expandable side wall, thereby withdrawing the device and completing the rust removal work.

[0015] Based on the above technical solution, the embodiments of the present invention can at least produce the following technical effects:

[0016] The high-frequency excitation type pile foundation acoustic detection tube inner wall rust removal device and use method provided by the present invention efficiently and non-destructively removes rust from the inner wall of the acoustic detection tube through the high-frequency excitation method. The working principle is simple, the rust removal efficiency is high, and the device can be flexibly disassembled, and is easy to move and carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front view of the device structure of an embodiment of the present invention;

[0018] Figure 2is a side view of the device structure of an embodiment of the present invention;

[0019] Figure 3 is an electrical position layout diagram of a device according to an embodiment of the present invention;

[0020] Figure 4 is a schematic diagram of the working state of the device according to an embodiment of the present invention;

[0021] Figure 5 Embodiment of the present invention Figure 1 A partial enlarged schematic diagram of

[0022] Figure 6 Embodiment of the present invention Figure 2 A partial enlarged schematic diagram of .

[0023] In the figure: 1. outer shell; 2. expandable side wall; 3. contraction spring; 4. side wall opening device; 41. push rod 1; 42. push rod 2; 43. rack 1; 44. rack 2; 5. wire jacket; 6. gear; 7. pressure sensor; 8. drive motor; 9. exciter; 10. drive rod; 11. pulley; 12. control system; 13. connecting line; 14. inner wall of acoustic detection tube. DETAILED DESCRIPTION

[0024] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0025] See also Figures 1 to 6 A high-frequency vibration type pile foundation acoustic detection tube inner wall rust removal device comprises a device outer shell 1, the outer shell 1 is provided with expandable side walls 2 opposite to each other in the length direction, and the inside of the expandable side wall 2 is provided with an exciter 9 for generating excitation; the inside of the outer shell 1 is also provided with a side wall retractable structure, and the side wall retractable structure comprises a side wall top opening device 4 movably connected to the expandable side wall 2, a contraction spring 3 and a driving motor 8 for driving the side wall top opening device 4, and the driving motor 8 and the exciter 9 are electrically connected to a control system 12.

[0026] As an optional embodiment, conical structures are provided at both ends of the outer shell 1 in the length direction, and a steel wire jacket 5 is provided on the surface of the outer shell 1 .

[0027] In this embodiment, the two ends of the outer shell 1 adopt a conical structure, and the middle part is connected by a tubular structure. This structure better fits the internal shape of the acoustic detection tube, thereby obtaining a more accurate detection result; the steel wire jacket 5 is used to increase the surface friction of the device, so that it is more firmly attached to the inner wall 14 of the acoustic detection tube.

[0028] As an optional embodiment, the expandable side wall 2 adopts a closed hollow structure with a trapezoidal cross-section, which is symmetrically arranged on both sides of the outer shell 1 in the length direction, and the middle part is connected to a contraction spring 3 for generating tension; the expandable side wall 2 is symmetrically provided with multiple exciters 9, drive motors 8 and pressure sensing devices.

[0029] In this embodiment, two exciters 9 and two pressure sensors 7 are symmetrically arranged up and down on one side of the expandable side wall 2, and a driving motor 8 is arranged in the middle part; the expandable side wall 2 is symmetrically arranged on the outer shell 1.

[0030] As an optional implementation, the pressure sensing device is a pressure sensor 7.

[0031] In this embodiment, a plurality of pressure sensors 7 are provided on the expandable side wall 2. The pressure sensors 7 can detect the side wall pressure when the expandable side wall 2 is expanded, so as to determine the degree of fit between the device and the inner wall 14 of the acoustic detection tube.

[0032] As an optional embodiment, the side wall opening device 4 includes a push rod 1 41, a push rod 2 42, a rack 1 43, and a rack 2 44, and pulleys 11 are provided at both ends of the push rod 41 and the push rod 2 42 connected to the expandable side wall 2; the side wall opening device 4 is arranged at two ends of the outer shell 1 opposite to each other, and the rack 1 43 and the rack 2 44 are staggered and connected by a gear 6 in the middle.

[0033] In this embodiment, the gear 6 is rotated by driving the motor 6, and the gear 6 is meshed with the rack 1 43 and the rack 2 44. During the rotation, the two racks move toward or opposite to each other, so that the top rod 41 and the top rod 42 are pushed out or retracted at the same time, and finally the retraction process of the expandable side wall 2 is realized. During the recovery process, the contraction spring 3 generates a pulling force inward to assist in completing the side wall recovery process.

[0034] As an optional implementation, a driving rod 10 is connected in the middle of the driving motor 8, and a gear 6 is connected to the driving rod. The gear 6 is used to move the oppositely arranged side wall unfolding devices 4 in the same direction or in the opposite direction.

[0035] As an optional implementation, the drive motor 8 , the vibrator 9 and the pressure sensor 7 are electrically connected to a control system 12 via a connecting line 13 .

[0036] In this embodiment, the control system 12 is used to send out electrical signal instructions to control the rotation direction of the drive motor 8, thereby controlling the retraction and extension of the deployable side wall 2; the connecting line 13 is used to transmit signals and control the arrangement height of the device.

[0037] The method for removing rust from the inner wall of a pile foundation acoustic detection tube provided by the present invention is as follows: after adjusting the device to a specific working height through the connecting line 13, an electrical signal instruction is sent through the control system 12 to start the drive motor 8 to make the expandable side wall 2 fit on the inner wall of the acoustic detection tube, and start the vibrator 9 to work; after the work is completed, the drive motor 8 is reversed by adjusting the control system 12 again to retract the expandable side wall 2, thereby withdrawing the device and completing the rust removal work.

[0038] The specific working process of the present invention is as follows:

[0039] First, the rust removal device is adjusted to the position to be rusted through the connecting line 13, and then the control system 12 controls the driving motor 8 to rotate forward, and the driving motor 8 drives the gear 6 to rotate forward through the driving rod 10, and the gear 6 makes the rack 1 43 and the rack 2 44 arranged on both sides move toward each other, and the push rod 1 41 and the push rod 2 42 move toward the center position, and the expandable side wall 2 is pushed outward through the limit groove structure inclined on both sides, and the expandable side wall 2 and the inner wall 14 of the acoustic detection tube reach a suitable degree of compression by cooperating with the pressure sensor 7; after the rust removal device is arranged and fixed, the control system 12 controls the driving motor 8 to rotate forward, and the driving motor 8 drives the gear 6 to rotate forward through the driving rod 10, and the gear 6 makes the rack 1 43 and the rack 2 44 arranged on both sides move toward each other, and the push rod 1 41 and the push rod 2 42 move toward the center position, and the expandable side wall 2 is pushed outward through the limit groove structure inclined on both sides, and the expandable side wall 2 and the inner wall 14 of the acoustic detection tube reach a suitable degree of compression; after the rust removal device is arranged and fixed, the control system 12 controls the driving motor 8 to rotate forward, and the driving motor 8 drives the gear 6 to rotate forward, and the gear 6 ... The control system 12 turns on the vibrator 9 arranged on the expandable side wall 2, and the vibrator 9 transfers energy to the rusted area on the inner wall 14 of the acoustic detection tube through the expandable side wall 2, thereby achieving the effect of rust removal; after the rust removal work is completed, the control system 12 adjusts the drive motor 8 to rotate in the opposite direction, and similarly drives the gear 6 to rotate in the opposite direction, so that the rack 1 43 and the rack 2 44 move in opposite directions, so that the push rod 1 41 and the push rod 2 42 move outward along the limit groove, and cooperate with the pulling force of the contraction spring 3 toward the center to retract the expandable side wall 2, and finally the rust removal device is retracted through the connecting line 13.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-frequency excitation type pile foundation acoustic detection tube inner wall rust removal device, comprising a device outer shell (1), characterized in that: The outer shell (1) is provided with expandable side walls (2) opposite to each other in the length direction, and a vibration exciter (9) is provided inside the expandable side walls (2); a side wall retractable structure is also provided inside the outer shell (1), and the side wall retractable structure comprises a side wall push-up device (4) movably connected to the expandable side wall (2), a contraction spring (3), and a drive motor (8) for driving the side wall push-up device (4); the drive motor (8) and the vibration exciter (9) are electrically connected to a control system (12); The expandable side wall (2) adopts a closed hollow structure with a trapezoidal cross section and is symmetrically arranged on both sides of the outer shell (1) in the length direction, and a contraction spring (3) for generating tension is connected to the middle part; a plurality of exciters (9), a drive motor (8) and a pressure sensing device are symmetrically arranged inside the expandable side wall (2); The side wall opening device (4) comprises a push rod 1 (41), a push rod 2 (42), a rack 1 (43), and a rack 2 (44), and pulleys (11) are arranged at both ends of the push rod 1 (41) and the push rod 2 (42) connected to the expandable side wall (2); the side wall opening device (4) is arranged at opposite ends of the outer shell (1), and the rack 1 (43) and the rack 2 (44) are staggered and connected in the middle by a gear (6); A driving rod (10) is connected in the middle of the driving motor (8), and a gear (6) is connected to the driving rod. The gear (6) is used to move the expandable side walls (2) arranged opposite to each other in the same direction or in opposite directions.

2. The high-frequency excitation type pile foundation acoustic detection pipe inner wall rust removal device according to claim 1 is characterized in that: Both ends of the outer shell (1) in the length direction are provided with conical structures, and the middle part adopts a tubular structure; and a steel wire jacket (5) is provided on the surface of the outer shell (1).

3. The high-frequency excitation type pile foundation acoustic detection pipe inner wall rust removal device according to claim 1 is characterized in that: The pressure sensing device is a pressure sensor (7).

4. The high-frequency excitation type pile foundation acoustic detection tube inner wall rust removal device according to claim 1, characterized in that: The drive motor (8), the vibrator (9) and the pressure sensor (7) are electrically connected to a control system (12) via a connecting line (13).

5. A method for removing rust from the inner wall of a pile foundation acoustic detection tube, characterized in that: The high-frequency vibration type pile foundation acoustic detection tube inner wall rust removal device as described in any one of claims 1 to 4 is used to perform rust removal work. After the device is adjusted to a specific working height through a connecting line (13), an electrical signal instruction is sent through the control system (12) to start the drive motor (8) so that the expandable side wall (2) is attached to the inner wall of the acoustic detection tube, and the exciter (9) is started to work; after the work is completed, the drive motor (8) is reversed by adjusting the control system (12) again, so that the expandable side wall (2) is retracted, and the device is withdrawn to complete the rust removal work.

Images