Foundation pile bearing capacity detection device

Abstract

The invention discloses a foundation pile bearing capacity detection device which comprises the components of a supporting part which is fixed on the ground and through which a foundation pile can pass; the bearing plate is horizontally arranged above the supporting part; the hydraulic part is connected between the supporting part and the bearing plate and used for controlling the bearing plate to move vertically; the tension and pressure sensor is connected between the hydraulic part and the bearing plate; the bearing cylinder is vertically arranged in the center of the bottom of the bearing plate and used for being arranged on a foundation pile in a sleeving mode; and the multiple limiting parts are arranged on the bearing cylinder, the multiple limiting parts are arranged in the circumferential direction of the bearing cylinder at equal intervals, and the limiting parts are used for abutting against the outer side surface of the foundation pile. The device has the dual detection function on the uplift bearing capacity and the compression bearing capacity of the foundation pile so as to adapt to the uplift foundation pile and the bearing foundation pile, and therefore the use adaptability is improved.

Description

Technical Field

[0001] The invention relates to the field of pile foundation detection, and in particular to a pile foundation bearing capacity detection device. Background Art

[0002] Pile foundation testing is a test of the bearing capacity and integrity of the pile foundation. The pile foundations are divided into pull-out piles and load-bearing piles. The pull-out piles need to be tested for pull-out bearing capacity, and the load-bearing piles need to be tested for compressive bearing capacity.

[0003] However, when carrying out load-bearing tests on piles in the related art, two different sets of testing devices are required for the pull-out piles and the load-bearing piles. For construction sites where both the pull-out piles and the load-bearing piles need to be tested, workers need to transport two sets of testing devices. Therefore, the bearing capacity testing devices in the related art have the disadvantage of poor adaptability and need to be improved. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a pile bearing capacity detection device having dual detection functions of pull-out bearing capacity and compressive bearing capacity, so as to adapt to pull-out piles and load-bearing piles, thereby improving the adaptability of use.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: A pile bearing capacity detection device, comprising: A support portion, used to be fixed on the ground, and the foundation pile can pass through the support portion; A receiving plate, horizontally arranged above the supporting part; A hydraulic unit connected between the support unit and the receiving plate and used to control the vertical movement of the receiving plate; A tension pressure sensor connected between the hydraulic unit and the receiving plate; A receiving tube is vertically arranged at the center of the bottom of the receiving plate and is used to be sleeved on the foundation pile; There are multiple limiting parts, which are respectively arranged on the receiving tube. The multiple limiting parts are arranged at equal intervals along the circumference of the receiving tube, and the limiting parts are used to press against the outer surface of the foundation pile.

[0006] Optionally: the receiving cylinder includes a supporting cylinder and a rotating cylinder, the supporting cylinder is vertically fixed at the center position of the bottom of the receiving plate, the rotating cylinder is coaxially arranged at the bottom of the supporting cylinder and is rotatably connected to the supporting cylinder, and a driving member is arranged on the supporting cylinder and the rotating cylinder, and the driving member is used to control the rotation of the rotating cylinder.

[0007] Optionally: the driving member includes a servo motor fixed on the supporting cylinder, a driving gear is fixedly sleeved on the output shaft of the servo motor, a driven gear ring is fixedly sleeved on the rotating cylinder, and the driven gear ring is meshed with the driving gear.

[0008] Optionally, each of the limiting parts includes: A supporting groove is provided on the inner side wall of the rotating cylinder; A support frame, slidably connected in the support groove; A control member, disposed on the rotating cylinder and used to control the radial movement of the support frame along the rotating cylinder; A support shaft is fixed on the corresponding support frame, and the axial direction of the support shaft is perpendicular to the radial direction of the rotating cylinder; The clamping wheel is rotatably sleeved on the support shaft, and the side wall of the clamping wheel is provided with a clamping surface that matches the outer surface of the foundation pile.

[0009] Optionally, the control member comprises a control screw threadedly connected to the rotating cylinder, one end of the control screw is rotatably connected to the support frame, and the other end is fixedly connected to a control handwheel.

[0010] Optionally, the hydraulic part includes a plurality of hydraulic cylinders, which are arranged at equal intervals along the circumference of the receiving tube, and the base of each hydraulic cylinder is fixedly connected to the supporting part respectively; There are multiple tension and pressure sensors, and the multiple tension and pressure sensors are arranged in a one-to-one correspondence with the multiple hydraulic cylinders. The top of the tension and pressure sensor is fixedly connected to the receiving plate, and the bottom is fixedly connected to the piston end of the hydraulic cylinder.

[0011] Optionally: the support part includes a horizontally arranged support ring, and the foundation pile can pass through the support ring, and a plurality of support holes are penetrated through the support ring, and the plurality of support holes are arranged at equal intervals along the circumference of the support ring, and a limit pin is movably penetrated in each of the support holes, and the limit pin is used to be nailed into the formation.

[0012] Optionally: a limiting thread is respectively provided at the bottom of each of the limiting pins, a plurality of control parts are provided on the support ring, the plurality of control parts are provided in one-to-one correspondence with the plurality of limiting pins, and the control parts are used to control the rotation of the corresponding limiting pins.

[0013] Optionally: Each of the control departments includes: A guide groove is spirally shaped and is arranged on the side wall of the limiting pin; A guide column, fixed on the inner wall of the support hole and tightly matched with the guide groove; Two control plates are symmetrically fixed on the top of the limit pins; There are two hydraulic push rods, which are respectively fixed on the support ring. The piston ends of the two hydraulic push rods are respectively fixedly connected to the corresponding control plates and are used to control the vertical movement of the corresponding control plates.

[0014] Optionally: a sliding groove is vertically arranged on the side wall of each of the limiting pins, the sliding groove is located below the corresponding guide groove, and is connected to the corresponding guide groove in a circular arc transition, and the guide column is vertically slidably matched with the corresponding sliding groove.

[0015] In summary, the present invention has at least the following beneficial effects: The detection device can detect the pull-out bearing capacity of the pull-out piles and the compressive bearing capacity of the load-bearing piles. That is, the detection device has dual detection functions of pull-out bearing capacity and compressive bearing capacity, and can be adapted to both pull-out piles and load-bearing piles, thereby improving the adaptability of use. At the same time, for construction sites with pull-out piles and load-bearing piles, the staff only needs to check in one set of detection devices, thereby improving the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment; Figure 2 is a front view of an embodiment; Figure 3 is a cross-sectional view of an embodiment; Figure 4 It is a cross-sectional view of the receiving tube in the embodiment.

[0017] : 1. Support part; 11. Support ring; 12. Support hole; 13. Limit pin; 14. Limit thread; 2. Socket plate; 3. Hydraulic part; 31. Hydraulic cylinder; 4. Tension pressure sensor; 5. Socket tube; 51. Support tube; 52. Rotating tube; 6. Limit part; 61. Support groove; 62. Support frame; 63. Control part; 631. Control screw; 632. Control hand wheel; 64. Support shaft; 65. Clamping wheel; 66. Clamping surface; 7. Control part; 71. Guide groove; 72. Guide column; 73. Control plate; 74. Hydraulic push rod; 8. Sliding groove; 9. Driving part; 91. Servo motor; 92. Driving gear; 93. Driven gear ring. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0019] Reference Figure 1 , Figure 2A pile bearing capacity detection device includes a support part 1 for fixing on the ground, and the pile can pass through the support part 1, a receiving plate 2 is horizontally arranged above the support part 1, a hydraulic part 3 is connected between the receiving plate 2 and the support part 1, and the hydraulic part 3 is used to control the vertical movement of the receiving plate 2. A tension and pressure sensor 4 is connected between the hydraulic part 3 and the receiving plate 2 to realize the detection of tension or pressure.

[0020] Reference Figure 2 , Figure 3 A receiving tube 5 is vertically arranged at the center position of the bottom of the receiving plate 2, and the receiving tube 5 is used to be sleeved on the foundation pile. At the same time, a plurality of limiting parts 6 are arranged on the receiving tube 5, and the plurality of limiting parts 6 are arranged at equal intervals along the circumference of the receiving tube 5, and the limiting parts 6 are used to press against the outer surface of the foundation pile.

[0021] When it is necessary to test the compressive bearing capacity of the load-bearing piles, fix the support part 1 on the ground, and make the load-bearing piles pass through the support part 1 and enter the receiving tube 5. Then, the receiving plate 2 is controlled to move downward by the hydraulic part 3 until the receiving plate 2 is pressed against the load-bearing piles, and the plurality of limit parts 6 are pressed against the outer surface of the load-bearing piles respectively. Next, the tension and pressure sensor 4 is connected to the external display device, and then the hydraulic part 3 is continued to control the receiving plate 2 to move downward until the tension and pressure sensor 4 reaches the required pressure value. By maintaining this pressure value for a certain period of time and measuring the sinking degree of the load-bearing piles, it can be determined whether the compressive bearing capacity of the load-bearing piles meets the requirements.

[0022] When it is necessary to test the pull-out bearing capacity of the pull-out pile, the support part 1 is fixed on the ground, and the pull-out pile passes through the support part 1 and enters the receiving tube 5. Then, the plurality of limit parts 6 are pressed against the outer surface of the pull-out pile respectively, and the tension and pressure sensor 4 is connected to the external display device, and then the receiving plate 2 is controlled to move upward by the hydraulic part 3 until the tension and pressure sensor 4 reaches the required pressure value. The pressure value is maintained for a certain period of time, and the upward movement degree of the pull-out pile is measured to determine whether the compressive bearing capacity of the pull-out pile meets the requirements.

[0023] The detection device in this embodiment can detect the pull-out bearing capacity of the pull-out piles, and can also detect the compressive bearing capacity of the load-bearing piles, that is, the detection device has dual detection functions of pull-out bearing capacity and compressive bearing capacity, and can be adapted to both pull-out piles and load-bearing piles, thereby improving the adaptability of use. At the same time, for construction sites with pull-out piles and load-bearing piles, the staff only needs to check in one set of detection devices, thereby improving the convenience of use.

[0024] Reference Figure 2 , Figure 3The support part 1 includes a horizontally arranged support ring 11, and the foundation pile can pass through the support ring 11. A plurality of support holes 12 are arranged through the support ring 11. The plurality of support holes 12 are arranged at equal intervals along the circumference of the support ring 11. A limiting nail 13 is movably penetrated in each support hole 12, and the limiting nail 13 is used to be nailed into the formation.

[0025] Reference Figure 2 , Figure 3 The bottom of each limiting pin 13 is integrally formed with a limiting thread 14, and a plurality of control parts 7 are provided on the support ring 11. The plurality of control parts 7 are arranged one by one corresponding to the plurality of limiting pins 13, and the control parts 7 are used to control the rotation of the corresponding limiting pins 13.

[0026] The tip of the limit pin 13 is driven into the formation, and then the corresponding limit pin 13 is controlled to rotate through the control unit 7, and the limit pin 13 is spirally drilled into the formation to improve the connection stability between the limit pin 13 and the formation. When the compressive bearing capacity of the load-bearing pile is tested, the hydraulic unit 3 can exert a greater force in time to meet the testing needs of large piles.

[0027] Reference Figure 2 , Figure 3 Each control part 7 includes a guide groove 71 and a guide column 72. The guide groove 71 is spiral and is arranged on the side wall of the limiting pin 13. The guide column 72 is fixed on the inner wall of the supporting hole 12 and is tightly matched with the guide groove 71. When the limiting pin 13 moves vertically, the limiting pin 13 can rotate automatically under the action of the guide column 72 and the guide groove 71.

[0028] Reference Figure 2 , Figure 3 Each control part 7 also has two control plates 73 and two hydraulic push rods 74. The two control plates 73 are symmetrically fixed on the top of the limiting nails 13. The two hydraulic push rods 74 are respectively fixed on the support ring 11, and the piston ends of the two hydraulic push rods 74 are respectively fixedly connected to the corresponding control plates 73 and are used to control the vertical movement of the corresponding control plates 73.

[0029] Reference Figure 2 , Figure 3 The side walls of each limiting nail 13 are respectively vertically provided with a sliding groove 8, the sliding groove 8 is located below the corresponding guide groove 71, and is connected to the corresponding guide groove 71 by an arc transition, and the guide column 72 is vertically slidably matched with the corresponding sliding groove 8.

[0030] The limit nail 13 is hit by a hammer so that the tip of the limit nail 13 is driven into the ground. At this time, the guide column 72 slides along the sliding groove 8 to guide and limit the limit nail 13 so that the limit nail 13 is vertically driven into the ground. Until the guide column 72 enters the guide groove 71, the hydraulic push rod 74 controls the control plate 73 to drive the limit nail 13 to move downward to ensure that the limit nail 13 is smoothly drilled into the ground.

[0031] Reference Figure 3 , Figure 4 The receiving cylinder 5 includes a supporting cylinder 51 and a rotating cylinder 52. The supporting cylinder 51 is vertically fixed at the center of the bottom of the receiving plate 2. The rotating cylinder 52 is coaxially arranged at the bottom of the supporting cylinder 51 and is rotatably connected to the supporting cylinder 51. The limiting portion 6 is arranged in the rotating cylinder 52. At the same time, a driving member 9 is arranged on the supporting cylinder 51 and the rotating cylinder 52, and the driving member 9 is used to control the rotation of the rotating cylinder 52.

[0032] Reference Figure 3 , Figure 4 The driving member 9 includes a servo motor 91 fixed on the supporting cylinder 51 , a driving gear 92 is fixedly sleeved on the output shaft of the servo motor 91 , a driven gear ring 93 is fixedly sleeved on the rotating cylinder 52 , and the driven gear ring 93 is meshed with the driving gear 92 .

[0033] The servo motor 91 controls the driving gear 92 to drive the driven gear to rotate. At this time, the rotating cylinder 52 has a tendency to drive the limiting part 6 to move along its circumferential direction, that is, the force exerted on the pile along the circumferential direction of the rotating cylinder 52 can realize the bearing capacity detection of the pile in the axial direction and the circumferential direction of the pile, thereby increasing the detection function of the detection device to realize the multi-performance detection of the pile.

[0034] Reference Figure 3 , Figure 4 Each limiting part 6 includes a support groove 61 provided on the inner side wall of the rotating cylinder 52, a support frame 62 is slidably connected in the support groove 61, a control member 63 is provided on the rotating cylinder 52, and the control member 63 is used to control the radial movement of the support frame 62 along the rotating cylinder 52. A support shaft 64 is fixedly connected to the support frame 62, the axial direction of the support shaft 64 is perpendicular to the radial direction of the rotating cylinder 52, a clamping wheel 65 is rotatably sleeved on the support shaft 64, and a side wall of the clamping wheel 65 is provided with a clamping surface 66 that fits with the outer surface of the foundation pile.

[0035] The support frame 62 is controlled to move by the control member 63, and the pressing surface 66 of the pressing wheel 65 is pressed against the outer surface of the pile, so that the fixing of the rotating cylinder 52 and the pile can be achieved. When the rotating cylinder 52 moves upward, the top of the pressing surface 66 and the connecting position of the outer wall of the pressing wheel 65 can be pressed against the pile more tightly, so as to ensure the pressing effect of the pressing wheel 65 and the pile.

[0036] Reference Figure 3 , Figure 4 The control member 63 includes a control screw 631 threadedly connected to the rotating cylinder 52. One end of the control screw 631 located inside the rotating cylinder 52 is rotatably connected to the support frame 62, and the other end located outside the rotating cylinder 52 is fixedly connected to a control handwheel 632. Rotating the control handwheel 632 drives the control screw 631 to rotate, and then the control screw 631 can control the movement of the corresponding support frame 62, so that the pressing surface 66 of the pressing wheel 65 is pressed against the outer surface of the foundation pile.

[0037] Reference Figure 1 , Figure 2 The hydraulic unit 3 includes a plurality of hydraulic cylinders 31, which are arranged at equal intervals along the circumference of the support ring 11, and the base of each hydraulic cylinder 31 is fixedly connected to the support ring 11. A plurality of tension and pressure sensors 4 are provided, and the plurality of tension and pressure sensors 4 are arranged one by one with the plurality of hydraulic cylinders 31, and the top of the tension and pressure sensor 4 is fixedly connected to the receiving plate 2, and the bottom is fixedly connected to the piston end of the hydraulic cylinder 31.

[0038] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, such modifications are protected by the patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A pile bearing capacity detection device, characterized in that: include: A support part (1) used for being fixed on the ground, and a foundation pile can pass through the support part (1); A receiving plate (2) is horizontally arranged above the supporting portion (1); A hydraulic unit (3) connected between the support unit (1) and the receiving plate (2) and used to control the vertical movement of the receiving plate (2); A tension pressure sensor (4) connected between the hydraulic unit (3) and the receiving plate (2); A receiving tube (5) is vertically arranged at the center of the bottom of the receiving plate (2) and is used to be sleeved on the foundation pile; There are a plurality of limiting parts (6) which are respectively arranged on the receiving tube (5). The plurality of limiting parts (6) are arranged at equal intervals along the circumference of the receiving tube (5), and the limiting parts (6) are used to press against the outer surface of the foundation pile.

2. A pile bearing capacity detection device according to claim 1, characterized in that: The receiving cylinder (5) comprises a supporting cylinder (51) and a rotating cylinder (52); the supporting cylinder (51) is vertically fixed at the center position of the bottom of the receiving plate (2); the rotating cylinder (52) is coaxially arranged at the bottom of the supporting cylinder (51) and is rotatably connected to the supporting cylinder (51); a driving member (9) is arranged on the supporting cylinder (51) and the rotating cylinder (52); and the driving member (9) is used to control the rotation of the rotating cylinder (52).

3. A pile bearing capacity detection device according to claim 2, characterized in that: The driving member (9) comprises a servo motor (91) fixed on the supporting cylinder (51); a driving gear (92) is fixedly sleeved on the output shaft of the servo motor (91); a driven gear ring (93) is fixedly sleeved on the rotating cylinder (52), and the driven gear ring (93) is meshed with the driving gear (92).

4. A pile bearing capacity detection device according to claim 2, characterized in that: Each of the limiting parts (6) comprises: A supporting groove (61) is provided on the inner side wall of the rotating cylinder (52); A support frame (62) slidably connected to the support groove (61); A control member (63) is disposed on the rotating cylinder (52) and is used to control the radial movement of the support frame (62) along the rotating cylinder (52); A support shaft (64) is fixed on the corresponding support frame (62), and the axial direction of the support shaft (64) is perpendicular to the radial direction of the rotating cylinder (52); The clamping wheel (65) is rotatably sleeved on the support shaft (64), and the side wall of the clamping wheel (65) is provided with a clamping surface (66) that matches the outer surface of the foundation pile.

5. A pile bearing capacity detection device according to claim 4, characterized in that: The control member (63) comprises a control screw (631) threadedly connected to the rotating cylinder (52), one end of the control screw (631) is rotatably connected to the support frame (62), and the other end is fixedly connected to a control hand wheel (632).

6. A pile bearing capacity detection device according to claim 1, characterized in that: The hydraulic part (3) comprises a plurality of hydraulic cylinders (31), the plurality of hydraulic cylinders (31) are arranged at equal intervals along the circumference of the receiving tube (5), and the base of each hydraulic cylinder (31) is fixedly connected to the support part (1) respectively; A plurality of the tension and pressure sensors (4) are provided, and the plurality of the tension and pressure sensors (4) are provided in a one-to-one correspondence with the plurality of the hydraulic cylinders (31), and the top of the tension and pressure sensor (4) is fixedly connected to the receiving plate (2), and the bottom is respectively fixedly connected to the piston end of the hydraulic cylinder (31).

7. A pile bearing capacity detection device according to claim 1, characterized in that: The support portion (1) comprises a horizontally arranged support ring (11), and the foundation pile can pass through the support ring (11); a plurality of support holes (12) are arranged through the support ring (11); the plurality of support holes (12) are arranged at equal intervals along the circumference of the support ring (11); a limiting nail (13) is movably inserted into each of the support holes (12), and the limiting nail (13) is used to be nailed into the stratum.

8. A pile bearing capacity detection device according to claim 7, characterized in that: A limiting thread (14) is respectively arranged at the bottom of each limiting pin (13), and a plurality of control parts (7) are arranged on the support ring (11). The plurality of control parts (7) are arranged in a one-to-one correspondence with the plurality of limiting pins (13), and the control parts (7) are used to control the rotation of the corresponding limiting pins (13).

9. A pile bearing capacity detection device according to claim 8, characterized in that: Each of the control units (7) comprises: The guide groove (71) is spiral and is arranged on the side wall of the limiting pin (13); A guide column (72) is fixed on the inner wall of the support hole (12) and is tightly matched with the guide groove (71); Two control plates (73) are symmetrically fixed on the top of the limiting pins (13); There are two hydraulic push rods (74) respectively fixed on the support ring (11); the piston ends of the two hydraulic push rods (74) are respectively fixedly connected to the corresponding control plates (73) and are used to control the vertical movement of the corresponding control plates (73).

10. A pile bearing capacity detection device according to claim 9, characterized in that: The side wall of each of the limiting pins (13) is respectively vertically provided with a sliding groove (8), the sliding groove (8) is located below the corresponding guide groove (71), and is connected to the corresponding guide groove (71) in a circular arc transition, and the guide column (72) is vertically slidably matched with the corresponding sliding groove (8).

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