Pile foundation pulling resistance detection device

Abstract

The utility model relates to the field of engineering detection, in particular to a pile foundation anti-pulling detection device, and aims to solve the technical problems that in the prior art, detection equipment generally detects through upward pulling, so that the requirement for the structural strength of a pulling mechanism is higher, the equipment is huge, and the cost is high. A cross-shaped sliding groove is formed in the base, a round through hole is formed in the center of the cross-shaped sliding groove, sliding blocks are slidably connected into the cross-shaped sliding groove, hydraulic cylinders are connected to the upper surfaces of the sliding blocks, pressure sensors are connected to the tops of the hydraulic cylinders, and the upper end of the pile foundation can be inserted through the cross-shaped sliding groove or the round through hole and connected with a pile cap. The pressure sensor can abut against the lower surface of the pile cap, the pile cap is pushed upwards through the multiple hydraulic cylinders instead of traditional lifting, the same detection effect is guaranteed, meanwhile, the equipment size is smaller, the manufacturing and transportation cost is lower, when the base cannot make contact with the ground, fixing is achieved through connection of the connecting shaft and an external support, and the device is suitable for underwater pile detection.

Description

Technical Field

[0001] The utility model relates to the field of engineering detection, in particular to a pile foundation uplift detection device. Background Art

[0002] A pile is a load-bearing member that transfers all or part of the load of a building to the foundation soil and has a certain stiffness and flexural resistance. It is a very widely used foundation form in civil engineering. The quality of the pile foundation directly determines the stability of the main structure of the building. Since the pile foundation is buried underground, it is difficult to observe its quality problems, and it is also very difficult to deal with when an accident occurs. Therefore, it is necessary to detect its uplift performance;

[0003] The detection equipment of the prior art usually performs detection by pulling upward, so there is a higher demand for the structural strength of the pulling mechanism. The equipment is often huge and the cost is very high. The utility model solves the above problems. Content of the Utility Model

[0004] In order to solve the technical problem that the detection equipment of the prior art usually performs detection by pulling upward, so there is a higher demand for the structural strength of the pulling mechanism, and the equipment is often huge and the cost is very high, the utility model further provides a pile foundation uplift detection device.

[0005] A pile foundation uplift detection device includes: a base, the base is supported by feet, a cross-shaped chute is arranged on the base, a circular through hole is arranged at the center of the cross-shaped chute, sliders are slidably connected in the cross-shaped chute, a hydraulic cylinder is connected to the upper surface of the slider, a pressure sensor is connected to the top of the hydraulic cylinder, the upper end of the pile foundation can be inserted through the cross-shaped chute or the circular through hole, a pile cap is connected to the upper end of the pile foundation, and the pressure sensor can abut against the lower surface of the pile cap.

[0006] Further, the slider is locked and displaced through a displacement mechanism. The displacement mechanism includes a threaded shaft, the threaded shaft is rotatably connected to the base, the threaded shaft is threadedly connected to the slider, the threaded shaft is connected to a shaft through a gear set, the shaft is rotatably connected to the base, the shaft end of the shaft is hinged to the shaft end of the shaft gear, a sleeve is slidably sleeved on the shaft end of the shaft gear, the gear end of the shaft gear is meshed with a tooth disc, an inner ring is connected inside the tooth disc, the inner ring is rotatably connected to the lower part of the base, and the inner ring is connected to a power source.

[0007] Further, a bracket is connected to the upper surface of the base, and the top of the bracket is connected to an external bracket through a connecting shaft.

[0008] Advantages of the Utility Model

[0009] 1. Instead of the traditional pulling method, multiple hydraulic cylinders are used to push up the pile cap. While ensuring the same detection effect, the equipment has a smaller volume and lower manufacturing and transportation costs;

[0010] 2. When the base cannot contact the ground, it is fixed by connecting to an external support through a connecting shaft, which is applicable to the detection of underwater piles. Brief Description of the Drawings

[0011] Figure 1 is a schematic structural view of the present utility model Figure 1 ;

[0012] Figure 2 is a schematic structural view of the present utility model Figure 2 .

[0013] In the figure: base 1; cross-shaped chute 2; circular through-hole 3; slider 4; hydraulic cylinder 5; pressure sensor 6; displacement mechanism 7; threaded shaft 71; gear set 72; shaft 73 connected; shaft gear 74; sleeve 75; tooth disc 76; inner ring 77; support 8; connecting shaft 9. Detailed Embodiment

[0014] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0015] In this device, the rotational connection means that the bearing is baked and installed on the shaft, and a spring retaining ring groove is provided on the shaft or the shaft hole. The axial fixation of the bearing is achieved by clamping the elastic retaining ring in the retaining ring groove to achieve rotation; the hinge connection means a connection method that is movable on connecting parts such as hinges, pin shafts, and short shafts.

[0016] The following will describe the present utility model in detail with reference to the accompanying drawings.

[0017] Embodiment 1:

[0018] Next, in combination with the attached Figure 1-2 This embodiment will illustrate a pile foundation uplift detection device, including: a base 1, the base 1 is supported by feet, a cross-shaped chute 2 is provided on the base 1, a circular through-hole 3 is provided at the center of the cross-shaped chute 2, sliders 4 are slidably connected in the cross-shaped chute 2, a hydraulic cylinder 5 is connected to the upper surface of the slider 4, a pressure sensor 6 is connected to the top of the hydraulic cylinder 5, the upper end of the pile foundation can be inserted through the cross-shaped chute 2 or the circular through-hole 3, a pile cap is connected to the upper end of the pile foundation, and the pressure sensor 6 can abut against the lower surface of the pile cap;

[0019] During detection, the sheet pile is inserted through the cross chute 2, and the round pile is inserted through the circular through hole 3. Detection can be performed on different piles. After insertion, the slider 4 is slid. The slider 4 drives the hydraulic cylinder 5 and the pressure sensor 6 to slide under the pile cap connected to the pile top. Control all the telescopic ends of the hydraulic cylinders 5 to extend simultaneously. The pressure sensor 6 contacts the pile cap and applies an upward force until the pile is pulled out. The sum of the maximum readings of all the pressure sensors 6 is the parameter of the pile's uplift performance.

[0020] The slider 4 realizes locking and displacement through the displacement mechanism 7. The displacement mechanism 7 includes a threaded shaft 71. The threaded shaft 71 is rotatably connected to the base 1. The threaded shaft 71 is threadedly connected to the slider 4. The threaded shaft 71 is connected to the shaft 73 through a gear set 72. The shaft 73 is rotatably connected to the base 1. The shaft end of the shaft 73 is hinged to the shaft end of the shaft gear 74. A sleeve 75 is slidably sleeved on the shaft end of the shaft gear 74. The gear end of the shaft gear 74 is meshed and connected to the tooth disc 76. The inner ring 77 is connected inside the tooth disc 76. The inner ring 77 is rotatably connected to the lower part of the base 1. The inner ring 77 is connected to the power source.

[0021] When it is necessary to adjust the position of the slider 4, first rotate the hinge point of the shaft 73 and the shaft gear 74 according to the shape of the pile. Lift the shaft gear 74 corresponding to the slider 4 that does not need to be displaced and separate it from the tooth disc 76. Slide the outer sleeve 75 of the shaft gear 74 that needs to be displaced to the hinge point. Turn on the power of the inner ring 77. The inner ring 77 drives the tooth disc 76 to rotate. The tooth disc 76 drives the gear end of the tooth disc 76 shaft gear 74 to rotate. The shaft end of the shaft gear 74 drives the shaft 73 to rotate. The shaft 73 drives the threaded shaft 71 to rotate through the gear set 72. The threaded shaft 71 drives the slider 4 to slide in the cross chute 2 to complete the displacement adjustment.

[0022] A bracket 8 is connected to the upper surface of the base 1. The top of the bracket 8 is connected to an external bracket through a connecting shaft 9.

[0023] When detecting in water, the base 1 is fixed through the connecting shaft 9 and the external bracket.

[0024] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0025] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A pile foundation pull-out detection device, characterized in that: include: A base (1) is supported by legs, a cross slide (2) is provided on the base (1), a circular through hole (3) is provided at the center of the cross slide (2), a slider (4) is slidably connected in the cross slide (2), a hydraulic cylinder (5) is connected to the upper surface of the slider (4), a pressure sensor (6) is connected to the top of the hydraulic cylinder (5), the upper end of the pile foundation can be inserted through the cross slide (2) or the circular through hole (3), the upper end of the pile foundation is connected to a pile cap, and the pressure sensor (6) can be against the lower surface of the pile cap.

2. A pile foundation pull-out detection device according to claim 1, characterized in that: The slider (4) is locked and displaced by a displacement mechanism (7). The displacement mechanism (7) comprises a threaded shaft (71), the threaded shaft (71) is rotatably connected to the base (1), the threaded shaft (71) is threadedly connected to the slider (4), the threaded shaft (71) is connected to a shaft (73) via a gear set (72), the shaft (73) is rotatably connected to the base (1), the shaft (73) is hinged to the shaft end of a shaft gear (74), a sleeve (75) is slidably sleeved on the shaft end of the shaft gear (74), the gear end of the shaft gear (74) is meshedly connected to a toothed disc (76), an inner ring (77) is connected inside the toothed disc (76), the inner ring (77) is rotatably connected to the lower part of the base (1), and the inner ring (77) is connected to a power source.

3. A pile foundation pull-out detection device according to claim 1 or 2, characterized in that: The upper surface of the base (1) is connected to a bracket (8), and the top end of the bracket (8) is connected to an external bracket via a connecting shaft (9).

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