Measuring device for measuring diameter of expanded base of rotary excavating pile

Abstract

The utility model discloses a measuring device for measuring the expanded base diameter of a rotary excavating pile, relates to the technical field of rotary excavating pile reaming measurement, and solves the problems that in the prior art, measuring equipment is high in cost and difficult to adapt to an underground muddy water environment after being used for a long time. The device comprises a bottom base, the bottom base is connected with a bottom supporting column, and the upper end of the bottom supporting column is connected with a top supporting column through a plurality of connecting rods; a sliding base is vertically arranged on the bottom supporting column in a sliding mode, a tension spring is arranged between the sliding base and the bottom base, at least two opening and closing arm mechanisms are connected to the circumferential direction of the sliding base and the circumferential direction of the bottom base at equal intervals, and the sliding base and the bottom base are connected with the supporting plate through the opening and closing arm mechanisms. A measuring base is adjustably arranged on the top supporting column and connected with the sliding base through an inhaul cable. By arranging the tension spring, the sliding base can be promoted to be close to the bottom base, so that the supporting plates connected through the opening and closing arm mechanism are synchronously opened and abut against the side wall of the expanded-base drill hole, and the device is accurate in measurement result, simple in measurement mode and simple and practical in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary pile hole expansion measurement, in particular to a measuring device for measuring the diameter of the rotary pile bottom expansion. Background Art

[0002] The rapid development of the construction industry, the deepening of foundation problems, the significant increase in deep foundation pit projects and other issues have also significantly increased the requirements for anchor cable application technology. Traditional pile bottom treatment has disadvantages such as difficulty in hole formation and incomplete grouting. The rotary drilling expansion head plays a vital role in deep foundation pit projects. The rotary drilling expansion head uses high-pressure rotary drilling technology to reinforce the soft soil layer and generate an expansion head at the bottom, which can greatly improve the pull-out bearing capacity of a single root.

[0003] A Chinese utility model patent with publication number CN219910745U discloses a measuring device for measuring the bottom diameter of a rotary bored pile, relates to the technical field of rotary bored pile measurement, solves the problem of inaccurate measurement accuracy of measuring devices in the prior art, and comprises a first base, on which a driver is fixedly provided, the driver is connected to a transmission mechanism, and is transmission-connected to a second base through the transmission mechanism, the driver can drive the second base to move toward or away from the first base through the transmission mechanism, the first base and the second base are coaxially arranged and are circumferentially hinged with a plurality of opening and closing arm mechanisms, the opening and closing arm mechanisms are connected to a support plate mechanism, and an encoder is provided on the driver.

[0004] In this solution, drivers, encoders and other equipment are used. Although the equipment has high precision, the equipment cost increases sharply. At the same time, the transmission mechanism uses a lead screw for transmission. Since the pile holes are mostly muddy and watery environments, long-term use will cause corrosion or severe wear to the transmission mechanism, resulting in easy damage, making it difficult to be used in underground muddy and water construction environments for a long time. Utility Model Content

[0005] In view of the deficiencies in the above-mentioned background technology, the utility model proposes a measuring device for measuring the diameter of the expanded bottom of a rotary pile, which solves the problems in the prior art of high cost of measuring equipment and difficulty in adapting to underground muddy water environment after long-term use.

[0006] The technical solution of the utility model is achieved as follows: a measuring device for measuring the bottom diameter of a rotary pile, comprising a bottom base, the bottom base is connected to a bottom support, the upper end of the bottom support is connected to a top support via a plurality of connecting rods; a sliding base is vertically slidably provided on the bottom support, a tension spring is provided between the sliding base and the bottom base, at least two opening and closing arm mechanisms are connected to the sliding base and the bottom base at circumferentially equidistant intervals, and are connected to a support plate via the opening and closing arm mechanisms; a measuring seat is adjustable on the top support, and the measuring seat is connected to the sliding base via a cable.

[0007] Preferably, the bottom support, the connecting rod and the top support are all hollow tubes, the bottom of the bottom support is fixedly connected to the bottom base, and the top is threadedly connected to the connecting rod.

[0008] Preferably, the sliding base is slidably sleeved outside the bottom support, the sliding base is provided with a connecting column for fixed connection with the lower end of the cable, and the bottom support is provided with a long waist hole to meet the movement of the connecting column.

[0009] Preferably, the bottom base comprises a base body, and a base plate is provided at the bottom of the base body. The base body and the side wall of the sliding base are both provided with at least two hinge seats at equal intervals in the circumferential direction.

[0010] Preferably, the opening and closing arm mechanism includes an opening and closing arm hinged to the base body and the hinged seat on the sliding base respectively, and a tooth block portion is provided at one end of the opening and closing arm close to the support plate. The tooth block portion is hinged to the U-shaped frame and connected to the support plate through the U-shaped frame, and the tooth block portions of the two opening and closing arms are meshed with each other.

[0011] Preferably, the support plate comprises a support plate body fixedly connected to the U-shaped frame, and a plurality of through holes are formed on the support plate body.

[0012] Preferably, the measuring seat includes a ring slidably mounted on the top support, a support block is provided on the ring, the upper end of the cable is connected to the support block, the support block extends into the interior of the top support, and the top support is provided with a long hole that allows the support block to move vertically.

[0013] Preferably, the top support is provided with a scale for determining the position of the collar. The side wall of the collar is provided with a locking knob; the several connecting rods, the connecting rod and the top support, and the connecting rod and the bottom support are all threadedly connected.

[0014] The beneficial effects of the utility model are as follows: by setting a tension spring, the sliding base can be urged to approach the bottom base, so that the support plate connected by the opening and closing arm mechanism is synchronously opened and abuts against the side wall of the bottom expansion hole. At the same time, the connection between the cable and the measuring seat can synchronously drive the measuring seat to slide on the top support with the opening of the support plate, so that the corresponding bottom expansion diameter can be determined through the moving range of the measuring seat, and the bottom expansion diameter can be measured outside the drilling hole. The utility model has accurate measurement results, simple measurement methods, no high-cost components such as drivers, etc., and reduces production costs. It has a simple and practical structure and can be applied to complex environments such as muddy water. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the bottom structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the sliding base of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the measuring seat of the utility model;

[0020] Figure 5 It is a schematic diagram of the internal structure of the measuring seat of the utility model.

[0021] In the figure: 1: bottom base, 2: bottom support, 3: connecting rod, 4: top support, 5: sliding base, 6: opening and closing arm mechanism, 7: support plate, 8: measuring seat, 9: cable, 10: connecting column, 11: long waist hole, 12: base body, 13: base plate, 14: hinged seat, 15: opening and closing arm, 16: tooth block part, 17: U-shaped frame, 18: support plate body, 19: through hole, 20: ring, 21: support block, 22: long hole, 23: scale, 24: locking knob, 25: support column, 26: horn seat. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1 , 2As shown, in Example 1, a measuring device for measuring the bottom diameter of a rotary pile expansion comprises a bottom base 1, wherein the bottom base 1 is connected to a bottom support 2, and the upper end of the bottom support 2 is connected to a top support 4 through a plurality of connecting rods 3. A sliding base 5 is vertically slidably provided on the bottom support 2, and a tension spring 25 is provided between the sliding base 5 and the bottom base 1, and at least two opening and closing arm mechanisms 6 are connected to the sliding base 5 and the bottom base 1 at equal intervals in the circumferential direction, and are connected to a support plate 7 through the opening and closing arm mechanisms 6. A measuring seat 8 is adjustable on the top support 4, and the measuring seat 8 is connected to the sliding base 5 through a cable 9. In this embodiment, the plurality of connecting rods 3, the connecting rod 3 and the top support 4, and the connecting rod 3 and the bottom support 2 are all threadedly connected. In addition, in this embodiment, the bottom support 2, the connecting rod 3 and the top support 4 are all hollow tubes, and the bottom of the bottom support 2 is fixedly connected to the bottom base 1, and the top is threadedly connected to the connecting rod 3. The number of connecting rods is determined according to the actual drilling depth, and the cable is connected to the sliding base after the number of connecting rods is selected.

[0024] As a further embodiment, the sliding base 5 is slidably sleeved outside the bottom support 2, and the sliding base 5 is provided with a connecting column 10 for fixedly connecting with the lower end of the cable 9, and the bottom support 2 is provided with a long waist hole 11 to meet the movement of the connecting column 10. In this embodiment, the bottom base 1 includes a base body 12, and a base plate 13 is provided at the bottom of the base body 12.

[0025] In this embodiment, a tension spring 25 is arranged between the sliding base 5 and the bottom base 1. The tension spring 25 in a stretched state during the drilling process can urge the sliding base 5 to approach the bottom base 1, so that the support plate 7 connected by the opening and closing arm mechanism 6 is synchronously opened outward and abuts against the side wall of the bottom expansion drilling hole. At the same time, during the opening process, the connection between the cable 9 and the measuring seat 8 can synchronously drive the measuring seat 8 to slide on the top support 4, so that the corresponding bottom expansion diameter can be determined by the moving range of the measuring seat 8, and the bottom expansion diameter can be measured outside the drilling hole.

[0026] Embodiment 2, a measuring device for measuring the diameter of the expanded bottom of a rotary bored pile. On the basis of Embodiment 1, at least two hinged seats 14 are provided at equal circumferential intervals on the side walls of the base body 12 and the sliding base 5, and the number of hinged seats matches the number of opening and closing arm mechanisms. The opening and closing arm mechanism 6 includes a pair of opening and closing arms 15 hinged to the hinged seats 14 on the base body 12 and the sliding base 5, respectively. A tooth block portion 16 is provided at one end of the opening and closing arm 15 close to the support plate 7. The tooth block portion 16 is hinged to the U-shaped frame 17 and connected to the support plate 7 through the U-shaped frame 17. The tooth block portions 16 of the two opening and closing arms 15 are meshed. Providing meshing tooth block portions can synchronize the opening and closing processes of the two opening and closing arms while maintaining the posture of the U-shaped frame during the opening and closing process, thereby preventing the support plate 7 connected to the U-shaped frame from tilting. In this embodiment, if Figure 2 ,3 As shown, a total of four opening and closing arm mechanisms are provided, corresponding to a total of eight articulated seats provided on the base body 12 and the sliding base 5. At the same time, as a further optional implementation, in this embodiment, a support column 25 is fixedly provided on the base body 12, the upper end of the support column 25 is fixedly connected to the tension spring, and a bullhorn seat 26 is provided on the side wall of the support column 25, which is used to support the opening and closing arm when it is retracted toward the bottom support, and at the same time limit the maximum opening and closing angle between the two opening and closing arms.

[0027] As a further embodiment, the support plate 7 includes a support plate body 18 fixedly connected to the U-shaped frame 17, and a plurality of through holes 19 are opened on the support plate body 18. In this embodiment, the through holes are rectangular holes evenly distributed on the support plate body, which can facilitate the passage of objects such as mud in the drill hole when the support plate body moves outward with the opening and closing arm, thereby reducing the support resistance.

[0028] Embodiment 3, a measuring device for measuring the bottom diameter of a rotary pile, based on Embodiment 2, as Figure 4 , 5 As shown, the measuring seat 8 includes a collar 20 slidably arranged on the top support 4, a support block 21 is arranged on the collar 20, the upper end of the cable 9 is connected to the support block 21, and the top support 4 is provided with a long hole 22 that satisfies the vertical movement of the support block 21. The support block 21 extends inward from the long hole into the interior of the top support. As an optional method, the support block 21 is located at one end of the top support and is rotatably provided with a roller for supporting the cable 9. The top support 4 is provided with a scale 23 for judging the position of the collar 20. The side wall of the collar 20 is provided with a locking knob 24. When the locking knob is rotated, its end can contact the side wall of the top support. Before measuring, the measuring seat needs to be moved to the upper end of the top support and the position of the measuring seat is fixed by the locking knob 24.

[0029] When the above embodiment is used, first, according to the actual hole expansion depth to be measured, a connecting rod with an appropriate number of sections is installed between the top support and the bottom support, then the measuring seat 8 is moved up to the starting point of the scale, and the position of the measuring seat is locked by the locking knob. As the cable 9 is pulled, the sliding base is moved up, so that the opening and closing arm of the opening and closing arm mechanism is in a retracted state, and the cable and the support block 21 are locked. Then, one end of the opening and closing arm is lowered to the bottom of the hole, and the locking knob is unlocked. Under the action of the tension spring, the sliding base moves down, and the opening and closing arm mechanism drives the push plate to expand outward, so that the support plate is supported on the inner wall of the bottom of the hole. In this process, the measuring seat is pulled down under the pulling action of the cable, and the corresponding scale change at this time is recorded. After the scale change is obtained, the actual bottom radius of the hole can be obtained by calculation, and the device can be optionally retracted, lifted to the ground, and then restored to the corresponding opening state of the opening and closing arm when the measuring seat produces the same scale change on the ground. The distance from the outer wall of the support plate to the axis of the bottom support is directly measured, that is, the bottom expansion radius of the borehole, and the measurement is completed.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A measuring device for measuring the bottom diameter of a rotary pile, characterized in that: The invention comprises a bottom base (1), wherein the bottom base (1) is connected to a bottom support (2), and the upper end of the bottom support (2) is connected to a top support (4) via a plurality of connecting rods (3); a sliding base (5) is vertically slidably provided on the bottom support (2), a tension spring (25) is provided between the sliding base (5) and the bottom base (1), and at least two opening and closing arm mechanisms (6) are connected to the sliding base (5) and the bottom base (1) at equidistant intervals in the circumferential direction, and the sliding base (5) is connected to a support plate (7) via the opening and closing arm mechanisms (6); and a measuring seat (8) is adjustably provided on the top support (4), and the measuring seat (8) is connected to the sliding base (5) via a cable (9).

2. The measuring device for measuring the bottom diameter of a rotary pile according to claim 1, characterized in that: The bottom support (2), the connecting rod (3) and the top support (4) are all hollow tubes; the bottom of the bottom support (2) is fixedly connected to the bottom base (1), and the top is threadedly connected to the connecting rod (3).

3. The measuring device for measuring the bottom diameter of a rotary pile according to claim 2, characterized in that: The sliding base (5) is slidably sleeved outside the bottom support (2); a connecting column (10) for fixedly connecting to the lower end of the cable (9) is provided on the sliding base (5); and a long waist hole (11) that allows the connecting column (10) to move is provided on the bottom support (2).

4. The measuring device for measuring the bottom diameter of a rotary pile according to any one of claims 1 to 3, characterized in that: The bottom base (1) comprises a base body (12), and a base plate (13) is provided at the bottom of the base body (12).

5. The measuring device for measuring the bottom diameter of a rotary pile according to claim 4, characterized in that: The side walls of the base body (12) and the sliding base (5) are both provided with at least two hinge seats (14) at equal intervals in the circumferential direction.

6. The measuring device for measuring the bottom diameter of a rotary pile according to claim 5, characterized in that: The opening and closing arm mechanism (6) comprises a pair of opening and closing arms (15) respectively hinged to the base body (12) and the hinge seat (14) on the sliding base (5); a tooth block portion (16) is provided at one end of the opening and closing arm (15) close to the support plate (7); the tooth block portion (16) is hinged to the U-shaped frame (17) and connected to the support plate (7) via the U-shaped frame (17); the tooth block portions (16) of the two opening and closing arms (15) are meshed with each other.

7. The measuring device for measuring the bottom diameter of a rotary pile according to claim 6, characterized in that: The support plate (7) comprises a support plate body (18) fixedly connected to the U-shaped frame (17), and a plurality of through holes (19) are formed on the support plate body (18).

8. The measuring device for measuring the bottom diameter of a rotary pile according to any one of claims 1 to 3 and 5 to 7, characterized in that: The measuring seat (8) comprises a collar (20) slidably mounted on the top support (4), a support block (21) being provided on the collar (20), an upper end of the cable (9) being connected to the support block (21), the support block (21) extending into the interior of the top support (4), and a long hole (22) being provided on the top support (4) to allow the support block (21) to move vertically.

9. The measuring device for measuring the bottom diameter of a rotary pile according to claim 8, characterized in that: The top support (4) is provided with a scale (23) for determining the position of the collar (20).

10. The measuring device for measuring the bottom diameter of a rotary pile according to claim 9, characterized in that: A locking knob (24) is provided on the side wall of the collar (20); the plurality of connecting rods (3), the connecting rod (3) and the top support (4), and the connecting rod (3) and the bottom support (2) are all threadedly connected.

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