Drilling positioning device for rotary excavating of cast-in-place pile

Abstract

The utility model relates to a drilling positioning device for a rotary excavating cast-in-place pile, which comprises a fixing plate, a fixing hole is formed in the center of the fixing plate, a fixing ring is arranged in the fixing hole, a spring is fixedly assembled between the fixing ring and the fixing hole, and a plurality of abutting blocks and four piezoelectric ceramics are arranged on the inner side of the fixing hole. The piezoelectric ceramics are arranged at the positions close to the four corners of the fixing plate correspondingly, the indicating lamps are arranged at the positions, corresponding to the piezoelectric ceramics, of the four corners of the fixing plate, and the indicating lamps are electrically connected with the adjacent piezoelectric ceramics correspondingly. And the large deviation or inclination cannot be found only when the large deviation or inclination occurs, so that the drilling quality is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotary bored cast-in-place piles, and in particular relates to a drilling positioning device for rotary bored cast-in-place piles. Background Art

[0002] A bored pile is a pile made by pouring concrete or reinforced concrete in situ. It has the advantages of no vibration, no soil squeezing, low noise, and suitability for use in densely built urban areas during construction. Bored piles are widely used in construction. In order to ensure the quality of the bored piles, a positioning device is used to assist the operation. When the drill rod is offset or tilted, the positioning device will restrict the drill rod. However, only when a large offset occurs will the friction between the drill rod and the positioning device cause noise or jitter, which will be discovered by the construction personnel, and then the drilling rig will be adjusted. When there is only a small offset, the friction between the drill rod and the positioning device is small, and the noise and jitter are not large, which is not easy to be discovered by the construction personnel. The drilled hole still has a certain offset or tilt, which makes the hole quality unsatisfactory. For this reason, a drilling positioning device for bored piles is proposed. Utility Model Content

[0003] The purpose of the utility model is to provide a drilling positioning device for rotary bored piles, so as to solve the problems existing in the background technology.

[0004] In order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0005] A drilling positioning device for rotary bored cast-in-place piles comprises a fixing plate, a fixing hole is provided at the center of the fixing plate, a fixing ring is provided inside the fixing hole, a spring is fixedly assembled between the fixing ring and the fixing hole, a plurality of abutment blocks and four piezoelectric ceramics are provided inside the fixing hole, and the piezoelectric ceramics are respectively provided at positions close to the four corners of the fixing plate, and indicator lights are provided at the four corners of the fixing plate corresponding to the piezoelectric ceramics, and the indicator lights are respectively electrically connected to the adjacent piezoelectric ceramics.

[0006] The fixing ring is used to limit the position of the drill rod to prevent it from shifting or tilting. The spring is used to ensure that the fixing ring is located at the center of the fixing hole when it is not affected by external force. The abutment block and the piezoelectric ceramic are used to support the fixing ring that follows the deviation of the drill rod, wherein the abutment block is used to limit the further deviation of the fixing ring, and the piezoelectric ceramic will generate voltage when it is squeezed and hit, thereby lighting up the corresponding indicator light, so that construction personnel can intuitively find that the drill rod has shifted or tilted.

[0007] An elastic pad is provided between the piezoelectric ceramic and the interior of the fixing hole, and an extension length of the piezoelectric ceramic toward the fixing ring is longer than an extension length of the abutment block.

[0008] An anti-rotation block staggered with the abutment block is arranged on the outer side of the fixing ring.

[0009] The four corners of the fixing plate are threaded with fixing screws, and the lower end of the fixing screw is rotatably equipped with a cross cone.

[0010] A handle is provided at the upper end of the fixing screw rod.

[0011] Level gauges are arranged around the fixing plate.

[0012] By setting piezoelectric ceramics and indicator lights, it is possible to quickly and intuitively observe when the drill rod is deviating, rather than being discovered only when there is a large deviation or tilt, thereby ensuring the quality of drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings.

[0014] Figure 1 This is a structural schematic diagram of a drilling positioning device for rotary bored piles according to the utility model;

[0015] Figure 2 It is a schematic cross-sectional structure diagram of a drilling positioning device for rotary bored piles according to the utility model;

[0016] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 4 It is a partial top view of a drilling positioning device for rotary bored piles according to the utility model;

[0018] The main component symbols are described as follows:

[0019] The fixing plate 100 , the fixing ring 200 , the spring 201 , the abutment block 202 , the piezoelectric ceramic 203 , the indicator light 204 , the elastic pad 300 , the anti-rotation block 400 , the fixing screw 500 , the cross cone 501 , the handle 502 , and the level 600 . DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Example:

[0022] like Figure 1-4As shown, a drilling positioning device for rotary bored piles includes a fixing plate 100, a fixing hole is opened in the center of the fixing plate 100, a fixing ring 200 is arranged inside the fixing hole, a spring 201 is fixedly assembled between the fixing ring 200 and the fixing hole, a plurality of abutment blocks 202 and four piezoelectric ceramics 203 are arranged on the inner side of the fixing hole, and the piezoelectric ceramics 203 are respectively arranged at positions close to the four corners of the fixing plate 100, and indicator lights 204 are arranged corresponding to the piezoelectric ceramics 203 at the four corners of the fixing plate 100, and the indicator lights 204 are respectively electrically connected to the adjacent piezoelectric ceramics 203.

[0023] The fixing plate 100 and the fixing hole are used to carry the fixing ring 200, and the fixing ring 200 is used to limit the position of the drill rod to prevent the drill rod from shifting or tilting. The upper and lower ends of the fixing ring 200 are provided with support plates that fit with the upper and lower ends of the fixing plate 100, which are used to confine the fixing ring 200 in the fixing hole. The spring 201 is used to ensure that the fixing ring 200 is located at the center of the fixing hole without being affected by external forces. The abutment block 202 and the piezoelectric ceramic 203 are used to receive the fixing ring 200 that follows the deviation of the drill rod, wherein the abutment block 202 is used to limit the further deviation of the fixing ring 200, and the piezoelectric ceramic 203 is squeezed and impacted to generate voltage, thereby lighting up the corresponding indicator light 204, and as the drill rod rotates, the extrusion and impact of the piezoelectric ceramic 203 will also fluctuate, thereby causing the indicator light 204 to flash, so that the construction personnel can intuitively find that the drill rod has shifted and tilted, and then make corrections and adjustments to ensure the quality of drilling.

[0024] An elastic pad 300 is provided between the piezoelectric ceramic 203 and the inside of the fixing hole, and the extension length of the piezoelectric ceramic 203 to the fixing ring 200 is longer than the extension length of the abutment block 202, so that the piezoelectric ceramic 203 will be hit by the abutment block 202 first, and the elastic pad 300 ensures that the piezoelectric ceramic 203 will not be damaged.

[0025] An anti-rotation block 400 staggered with the abutment block 202 is disposed on the outer side of the fixing ring 200 to prevent the fixing ring 200 from rotating with the drill pipe, thereby causing damage to the spring 201 .

[0026] The four corners of the fixing plate 100 are threaded with fixing screws 500, and the lower end of the fixing screws 500 is rotatably equipped with a cross cone 501 for adjusting the fixing plate 100 so that the fixing plate 100 can be leveled, and the cross cone 501 is convenient to be inserted into the ground.

[0027] A handle 502 is provided at the upper end of the fixing screw 500 to facilitate the rotation of the fixing screw 500 .

[0028] Level gauges 600 are arranged around the fixing plate 100 to facilitate observation of whether the fixing plate 100 is level.

[0029] Working principle: When drilling, place the device horizontally at the position to be drilled, pass the drill rod through the fixing ring 200, so that the fixing ring 200 is wrapped around the outside of the drill rod. During the drilling operation, if the drill rod is offset or tilted, it will contact and squeeze the inner wall of the fixing ring 200, so that the fixing ring 200 will also deviate. At this time, the fixing ring 200 will hit the piezoelectric ceramic 203 in the offset direction, and the piezoelectric ceramic 203 will generate a voltage, so that the indicator light 204 is lit. At the same time, as the drill rod rotates, the force exerted on the fixing ring 200 will change to a certain extent, so that the force exerted on the piezoelectric ceramic 203 will change, so that the piezoelectric ceramic 203 will generate a changing voltage, so that the indicator light 204 will continue to flash, reminding the construction personnel that there is an offset, and the normal jitter generated during drilling will only make the indicator light 204 flash slightly and intermittently, and will not flash continuously, and because the direction of the jitter is random, the four indicator lights 204 will flash randomly, so there will be no misjudgment. After the offset is found, the construction personnel can adjust the drilling rig to ensure the drilling quality.

[0030] By providing the piezoelectric ceramic 203 and the indicator light 204, when the drill rod deviates, it can be observed quickly and intuitively, rather than being discovered only when a large deviation or tilt occurs, thereby ensuring the drilling quality.

[0031] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A drilling positioning device for rotary bored piles, comprising a fixing plate, a fixing hole is provided in the center of the fixing plate, and is characterized in that: A fixing ring is provided inside the fixing hole, a spring is fixedly assembled between the fixing ring and the fixing hole, a plurality of abutment blocks and four piezoelectric ceramics are provided inside the fixing hole, and the piezoelectric ceramics are respectively provided at positions close to the four corners of the fixing plate, and indicator lights are provided at the four corners of the fixing plate corresponding to the piezoelectric ceramics, and the indicator lights are respectively electrically connected to the adjacent piezoelectric ceramics.

2. A drilling positioning device for rotary bored piles according to claim 1, characterized in that: An elastic pad is provided between the piezoelectric ceramic and the interior of the fixing hole, and an extension length of the piezoelectric ceramic toward the fixing ring is longer than an extension length of the abutment block.

3. A drilling positioning device for rotary bored piles according to claim 1, characterized in that: An anti-rotation block staggered with the abutment block is arranged on the outer side of the fixing ring.

4. A drilling positioning device for rotary bored piles according to claim 1, characterized in that: The four corners of the fixing plate are threaded with fixing screws, and the lower end of the fixing screw is rotatably equipped with a cross cone.

5. A drilling positioning device for rotary bored piles according to claim 4, characterized in that: A handle is provided at the upper end of the fixing screw rod.

6. A drilling positioning device for rotary bored piles according to claim 1, characterized in that: Level gauges are arranged around the fixing plate.

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