Anti-slip pile foundation static load test device

Abstract

The utility model relates to the technical field of building detection equipment, and discloses an anti-slip pile foundation static load test device which comprises a base, a jack is arranged at the top of the base and is perpendicular to the base, and the top end of an output shaft of the jack is connected with a bearing table; cross rods are connected to the two sides of the bearing table, objective tables are hung on the cross rods on the two sides, cross beams are arranged at the bottoms of the objective tables, air cylinders are connected to the ends of the cross beams, clamping arms are connected to the air cylinders, the multiple clamping arms are vertically arranged and surround the peripheries of the objective tables, and the air cylinders drive the clamping arms to move outwards or inwards in the extending direction of the cross beams. The air cylinder is arranged on the cross beam at the bottom of the objective table to drive the clamping arms to clamp inwards or loosen outwards, so that the counter weight on the objective table is clamped or loosened, the multiple clamping arms are vertically arranged and surround the periphery of the objective table, the counter weight is prevented from sliding off from the objective table, when the clamping arms are tightened, the counter weight can be clamped, and the clamping arms are not prone to falling off. And the counter weight is prevented from sliding on the objective table.

Description

Technical Field

[0001] This utility model patent relates to the technical field of building testing equipment. Specifically, it relates to a pile foundation static load test device that prevents slipping. Background Technique

[0002] Currently, in the actual operation of pile foundation static load tests, when stacking heavy objects, they are simply piled up without any corresponding restraint on the counterweight blocks. Often, tilting or the dropping of a single counterweight block occurs. When the stack tilts, it will cause the center of gravity of the ballast to lose balance, affecting the test results. Sometimes, due to excessive tilting, it will collapse and damage the construction crane, causing serious injuries to construction workers. To prevent such phenomena from occurring, a reasonable pile foundation static load test device or a reasonable stacking construction method should be adopted.

[0003] In the prior art, the Chinese utility model with the publication number CN219671451U discloses a pile foundation static load test device, which includes a support platform installed on the pile foundation. A jack is provided on the support platform; a support frame is provided on the jack, and counterweight frames are movably installed at both ends of the support frame; a bearing platform is also provided on the upper surface of the support frame; by using the support platform to fix the jack on the pile foundation, at this time, place the counterweight blocks on the counterweight frames and the bearing platform, and then install the counterweight frames on the support frame, then this device can conduct a static load test on the pile foundation; since the counterweight frames are movably connected to the support frame, the counterweight frames are convenient to disassemble and assemble. The support frame can place the counterweight blocks horizontally on both sides of the jack to reduce the bearing weight of the bearing platform, and the counterweight frames extend downward from the support frame, so the center of gravity of this device can also be reduced; based on this, this utility model is not only convenient to use and disassemble, but also can reduce the center of gravity of the test device to ensure the safe use of the equipment.

[0004] However, the above technical solution of the prior art still has at least the following defects: There is no clamping device on the counterweight frame of this solution, and it is possible for heavy objects to slip and collapse during the counterweight process, causing harm to the surrounding cranes and personnel, and there are potential safety hazards. Summary of the Utility Model

[0005] The purpose of this utility model is to provide a pile foundation static load test device that prevents slipping, aiming to solve the problem that the counterweight is prone to slipping during the counterweight process of pile foundation static load tests in the prior art.

[0006] This utility model is implemented as follows. A pile foundation static load test device that prevents slipping includes a base. A jack is provided at the top of the base, the jack is arranged perpendicular to the base, and the top end of the output shaft of the jack is connected to a bearing platform;

[0007] Both sides of the carrying platform are connected with cross bars, and loading platforms are suspended on both cross bars. A cross beam is arranged at the bottom of the loading platform, and an end of the cross beam is connected with a cylinder. The cylinder is connected with a clamping arm. A plurality of the clamping arms are vertically arranged and surround the periphery of the loading platform. The cylinder drives the clamping arm to move outwards or inwards in the extending direction of the cross beam.

[0008] Optionally, the loading platform includes a bottom plate and a suspension arm fixedly connected to the bottom plate. A sliding groove is arranged at the top of the suspension arm, and the cross bar is slidably connected with the sliding groove.

[0009] Optionally, a plurality of limiting grooves are arranged on the cross bar, and the plurality of limiting grooves are arranged at intervals along the extending direction of the cross bar.

[0010] Optionally, a driving motor and two spaced limiting blocks are arranged at the bottom of the bottom plate. A bidirectional screw rod is arranged between the two limiting blocks. The cross beam is rotationally connected with the bidirectional screw rod, and the top of the cross beam abuts against the bottom of the bottom plate. The rotation direction of the left thread of the bidirectional screw rod is opposite to that of the right thread. A transmission gear is fixed in the middle of the bidirectional screw rod, and the transmission gear is driven by the driving motor.

[0011] Optionally, a plurality of second universal wheels are further arranged at the bottom of the bottom plate.

[0012] Optionally, a plurality of hydraulic rods are arranged at the bottom of the base, and a first universal wheel is connected to the bottom end of the hydraulic rod.

[0013] Optionally, a raised ring protrudes from the bottom of the base, and a receiving space for receiving the top end of the pile foundation is formed on the inner side wall of the raised ring.

[0014] Optionally, a threaded rod is threadedly connected to the side wall of the raised ring, and a clamping member for clamping the pile foundation is rotationally connected to the inner end of the threaded rod.

[0015] Optionally, an elastic cushion layer is arranged on the inner side wall of the clamping member.

[0016] Optionally, the bending radian of the clamping member matches the outer side wall of the pile foundation.

[0017] Compared with the prior art, a pile foundation static load test device for preventing slipping provided by the utility model sets a cylinder at the end of the cross beam at the bottom of the loading platform. The cylinder is connected with the clamping arm. The cylinder drives the clamping arm to clamp inwards or loosen outwards, so as to clamp or loosen the counterweight on the loading platform. Moreover, a plurality of clamping arms are vertically arranged and surround the periphery of the loading platform, avoiding the counterweight from slipping off the loading platform. When the clamping arms are tightened, the counterweight can be clamped tightly to avoid the counterweight from sliding on the loading platform. Description of the Drawings

[0018] Figure 1 Structural schematic diagram of an anti - falling pile foundation static load test device provided by the present utility model;

[0019] Figure 2 Front view of an anti - falling pile foundation static load test device provided by the present utility model;

[0020] Figure 3 Structural schematic diagram of the base of an anti - falling pile foundation static load test device provided by the present utility model;

[0021] Figure 4 Structural schematic diagram of the load - bearing platform of an anti - falling pile foundation static load test device provided by the present utility model.

[0022] Reference numerals: base 1, jack 2, cross bar 3, hydraulic rod 4, bearing platform 5, suspension arm 6, sliding groove 61, bottom plate 7, limit block 8, bidirectional screw 9, transmission gear 10, cross beam 11, cylinder 12, clamping arm 13, raised ring 14, clamping piece 15, first universal wheel 161, second universal wheel 162, limit groove 18, pile foundation 19. Detailed implementation manners

[0023] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0024] The implementation of the present utility model will be described in detail below with specific embodiments.

[0025] In the drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] Refer to Figures 1-4 as shown, which is a preferred embodiment provided by the present utility model.

[0027] An anti-slip pile foundation static load test device, including a base 1, a jack 2 is provided on the top of the base 1, the jack 2 is arranged perpendicular to the base 1, and the top end of the output shaft of the jack 2 is connected to a bearing platform 5; cross bars 3 are connected to both sides of the bearing platform 5, and load platforms are suspended on both cross bars 3. A cross beam 11 is provided at the bottom of the load platform, and an air cylinder 12 is connected to the end of the cross beam 11. The air cylinder 12 is connected to a clamping arm 13. A plurality of clamping arms 13 are arranged vertically and surround the outer periphery of the load platform. The air cylinder 12 drives the clamping arm 13 to move outward or inward in the extending direction of the cross beam 11. The air cylinder 12 is a common air cylinder structure and is a common starting drive element.

[0028] In the anti-slip pile foundation static load test device provided in this embodiment, by arranging an air cylinder 12 at the end of the cross beam 11 at the bottom of the load platform, and the air cylinder 12 is connected to the clamping arm 13. The air cylinder 12 drives the clamping arm 13 to clamp inward or loosen outward, so as to clamp or loosen the counterweight on the load platform. And a plurality of clamping arms 13 are arranged vertically and surround the outer periphery of the load platform, avoiding the counterweight from slipping off the load platform. When the clamping arms 13 are tightened, the counterweight can be clamped to prevent the counterweight from sliding on the load platform.

[0029] Specifically, the load platform includes a bottom plate 7 and suspension arms 6 fixedly connected to the bottom plate 7. A sliding groove 61 is provided at the top of the suspension arm 6, and the cross bar 3 is slidably connected to the sliding groove 61. The position of the load platform and the counterweight on the cross bar 3 can be adjusted to keep the configurations on both sides of the cross bar 3 balanced.

[0030] Optionally, a plurality of limiting grooves 18 are provided on the cross bar 3, and the plurality of limiting grooves 18 are arranged at intervals along the extending direction of the cross bar 3. The suspension arm 6 is limited and positioned through the limiting grooves 18, so that the position of the load platform is stable. When the distances between the load platforms on the left and right sides from the bearing platform 5 are the same, the center of gravity of the overall counterweight and the axis of the jack 2 are located on the same straight line, enabling the pile foundation 19 to bear evenly and avoiding the situation of the load platform tilting.

[0031] Specifically, a driving motor and two spaced limiting blocks 8 are provided at the bottom of the bottom plate 7. A bidirectional screw 9 is provided between the two limiting blocks 8. The cross beam 11 is rotatably connected to the bidirectional screw 9, and the top of the cross beam 11 abuts against the bottom of the bottom plate 7; the rotation direction of the left thread of the bidirectional screw 9 is opposite to the rotation direction of the right thread; a transmission gear 10 is fixed in the middle of the bidirectional screw 9, and the transmission gear 10 is driven by the driving motor. The end of the bidirectional screw 9 can be rotatably connected to the limiting block 8 through a bearing. When the driving motor drives the bidirectional screw 9 to rotate, the cross beam 11 moves toward the middle or moves outward in the extending direction of the bidirectional screw 9, so as to adjust the position of the clamping arm 13 on the outer periphery of the load platform, facilitating clamping of the counterweight at a suitable position and further avoiding the counterweight from slipping off the load platform.

[0032] Optionally, a plurality of second universal wheels 162 are further provided at the bottom of the bottom plate 7. By connecting the second universal wheels 162 through the bottom plate 7, the weighted load platform can be conveniently moved to the corresponding position of the cross bar 3, so that the cross bar 3 can be inserted into the sliding groove 61, completing the weight of the overall device, reducing the manual labor intensity, and facilitating the disassembly and assembly of the load platform, counterweights, etc.

[0033] Specifically, a plurality of hydraulic rods 4 are provided at the bottom of the base 1, and the bottom ends of the hydraulic rods 4 are connected with first universal wheels 161. The hydraulic rods 4 can control the lifting of the first universal wheels 161. By equipping the base 1 with the first universal wheels 161, the main body of the test device can be pushed and moved to the position of the pile foundation 19 through the first universal wheels 161, and the device can be installed on the pile foundations 19 at different heights through the lifting of the hydraulic rods 4.

[0034] Specifically, a convex ring 14 is convexly provided at the bottom of the base 1, and an accommodation space for accommodating the top end of the pile foundation 19 is formed on the inner side wall of the convex ring 14.

[0035] Preferably, a threaded rod is threadedly connected to the side wall of the convex ring 14, and a clamping member 15 for clamping the pile foundation 19 is rotatably connected to the inner end of the threaded rod. Rotating the threaded rod can make the clamping member 15 clamp inward or loosen outward.

[0036] An elastic cushion layer is provided on the inner side wall of the clamping member 15 to increase the friction of the clamping member 15, making the connection between the base 1 and the pile foundation 19 more stable.

[0037] The clamping member 15 is basically arranged in an arc shape, and the bending radian of the clamping member 15 matches the outer side wall of the pile foundation 19, making the clamping more appropriate and stable.

[0038] Preferably, the clamping member 15 is an elastic arc-shaped plate, so as to more easily adapt to the detection of pile foundations 19 with different diameters.

[0039] During operation, the base 1 is moved to the top of the pile foundation 19 through the first universal wheels 161, and the pile foundation 19 is aligned with the inside of the convex ring 14. The hydraulic rods 4 are started to lower the base 1 until it abuts against the top of the pile foundation 19. The hydraulic rods 4 continue to retract to make the first universal wheels 161 suspended, so that all the gravity borne by the base 1 acts on the pile foundation 19. Then, the bolt is turned to make the clamping member 15 clamp the pile foundation 19 to prevent the base 1 from translating on the top of the pile foundation 19.

[0040] Move the load platform to near the crossbar 3 through the second universal wheel 162, place the heavy object on the load platform. At least two groups of counterweights can be placed on one load platform, and the two groups of counterweights are respectively located on the left and right sides of the suspension arm 6 and are symmetrically placed relative to the suspension arm 6. During actual operation, make the heavy object abut against the suspension arm to complete the symmetrical placement, ensuring the load-bearing stability of the load platform. Then start the drive motor, adjust the front and rear positions of the clamping arm 13 according to the size of the heavy object, and then start the cylinder 12 to make the clamping arm 13 tighten inward, and complete the clamping of the heavy object through the clamping arm 13 to prevent the heavy object from slipping. Then move the load platform equipped with counterweights through the second universal wheel 162 to drive the suspension arm 6 to move, so that the crossbar 3 is inserted into the sliding groove 61, and then continue to translate until the sliding groove 61 is aligned with the limit groove 18.

[0041] When the load platforms carrying counterweights on both sides move and drive the suspension arm 6 to move to the position corresponding to the limit groove 18, start the jack 2 to drive the crossbar to move upward, so that the suspension arm 6 is caught in the limit groove 18. The load platform continues to move upward, and the load platform can be lifted until the second universal wheel 162 leaves the ground. Then the forces of the heavy objects on both sides act on the bearing platform 5 through the crossbar 3, and then the force is applied to the base 1 through the jack 2, finally realizing the load on the foundation pile 19, and then completing the static load test on the foundation pile 19.

[0042] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pile foundation static load test device for preventing slipping, characterized in that: It comprises a base, a jack is provided on the top of the base, the jack is arranged perpendicular to the base, and the top end of the output shaft of the jack is connected to a bearing platform; Both sides of the support platform are connected with cross bars, and the cross bars on both sides are used to hang the work platform. A cross beam is provided at the bottom of the work platform, and the ends of the cross beam are connected with cylinders, and the cylinders are connected with clamping arms. Multiple clamping arms are vertically arranged and surround the outer circumference of the work platform. The cylinders drive the clamping arms to move outward or inward in the extension direction of the cross beam.

2. The anti-slip pile foundation static load test device according to claim 1, characterized in that: The loading platform comprises a bottom plate and a suspension arm fixedly connected to the bottom plate, a sliding groove is provided on the top of the suspension arm, and the cross bar is slidably connected to the sliding groove.

3. The anti-slip pile foundation static load test device according to claim 2, characterized in that: The cross bar is provided with a plurality of limiting grooves, and the plurality of limiting grooves are arranged at intervals along the extending direction of the cross bar.

4. The anti-slip pile foundation static load test device according to claim 3, characterized in that: A driving motor and two spaced-apart limit blocks are provided at the bottom of the base plate, a bidirectional screw is provided between the two limit blocks, the crossbeam is rotatably connected to the bidirectional screw, and the top of the crossbeam abuts against the bottom of the base plate; the rotation direction of the left thread of the bidirectional screw is opposite to that of the right thread; a transmission gear is fixed to the middle of the bidirectional screw, and the transmission gear is driven by the driving motor.

5. The anti-slip pile foundation static load test device according to claim 3, characterized in that: A plurality of second universal wheels are also provided at the bottom of the base plate.

6. The anti-slip pile foundation static load test device according to any one of claims 1 to 5, characterized in that: A plurality of hydraulic rods are arranged at the bottom of the base, and the bottom ends of the hydraulic rods are connected with first universal wheels.

7. The anti-slip pile foundation static load test device according to any one of claims 1 to 5, characterized in that: A raised ring is convexly arranged at the bottom of the base, and an accommodating space for accommodating the top of the pile foundation is formed on the inner side wall of the raised ring.

8. The anti-slip pile foundation static load test device according to claim 7, characterized in that: A threaded rod is threadedly connected to the side wall of the raised ring, and a clamping piece for clamping the pile foundation is rotatably connected to the inner end of the threaded rod.

9. The anti-slip pile foundation static load test device according to claim 8, characterized in that: An elastic cushion layer is arranged on the inner side wall of the clamping member.

10. The anti-slip pile foundation static load test device according to claim 8, characterized in that: The curvature of the clamping member matches the outer side wall of the pile foundation.

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