Geotechnical engineering pile foundation static load test device

Abstract

The utility model relates to the technical field of pile foundation detection, in particular to a geotechnical engineering pile foundation static load test device which comprises a supporting frame and an adjusting device. A mounting plate is arranged on the inner side of the supporting frame, a hydraulic cylinder is arranged on the mounting plate and is in driving connection with a push rod, and a bearing plate is arranged on the push rod; the adjusting device comprises two vertical blocks arranged on the supporting frame, a lifting seat connected to the vertical blocks in a sliding mode, a motor arranged on the lifting seat, a lead screw in driving connection with the motor, a bearing arranged on the mounting plate, two guide blocks and two fixing columns vertically distributed on the supporting frame, and the lead screw is in threaded connection to the supporting frame; the bottom end of the lead screw is connected with an inner ring of the bearing, and the guide block is slidably arranged on the fixing column. According to the utility model, the initial height of the bearing plate can be adjusted, so that the pile foundations with different heights can be tested and detected, and meanwhile, the stability of the pile foundations during the test can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pile foundation detection, particularly to a geotechnical engineering pile foundation static load test device. BACKGROUND

[0002] The geotechnical engineering pile foundation is a commonly used deep foundation form composed of a pile and a pile cap connected to the top of the pile. The geotechnical engineering pile foundation static load test is an important test method for evaluating the bearing capacity of the pile foundation. The test applies a static load on the pile foundation and monitors the settlement, uplift displacement or horizontal displacement of the pile foundation to determine the vertical compressive bearing capacity, vertical uplift bearing capacity or horizontal bearing capacity of the pile foundation.

[0003] The Chinese patent with publication number CN218060461U discloses a static load test device for pile foundation detection, which comprises a bearing frame and a detection mechanism. The detection mechanism is composed of a pressure oil pump, a top block, a jack, a pressure plate, a fixing sleeve, a pile, bolts and an arc clamping plate. The bottom of the bearing frame is provided with the top block, the bottom of the top block is provided with the jack, the bottom of the jack is provided with the pressure plate, the bottom of the pressure plate is provided with the fixing sleeve, the outer side wall of the fixing sleeve is threadedly connected with a group of symmetrical bolts, the other end of the bolts is provided with the arc clamping plate, the arc clamping plate is located in the fixing sleeve, the inner side wall of the fixing sleeve is connected with the pile, and the pile is located between the arc clamping plates. The detection mechanism can uniformly detect the pile and reduce the detection error of the pile. The clamping mechanism can clamp and fix the bearing block to prevent the bearing block from falling and injuring personnel.

[0004] However, the above technical solution has the following disadvantages: the device cannot adjust the initial height of the pressure plate according to the height of the pile foundation, which reduces the application range of the device and the equipment, and when the bolts are twisted, the arc clamping plate will also rotate, which makes the arc clamping plate and the pile foundation cannot be in direct contact, and the pile foundation cannot be stably fixed. UTILITY MODEL CONTENTS

[0005] The utility model aims at the problems in the background art and provides a geotechnical engineering pile foundation static load test device, which can adjust the initial height of the pressure plate to realize the test and detection of pile foundations with different heights and ensure the stability of the pile foundation during the test.

[0006] The utility model discloses a technical scheme, a kind of geotechnical engineering pile foundation static load test device, including support frame and adjusting device;The inner side of support frame is provided with mounting plate, hydraulic cylinder is provided on mounting plate, hydraulic cylinder is driven and is connected with push rod, push rod is provided with pressure plate;Adjusting device includes two vertical blocks being set on support frame, lifting seat being slidably connected on vertical block, motor being set on lifting seat, lead screw being driven connected with motor, bearing and two guide blocks being set on mounting plate, and two fixed columns vertically distributed on support frame, lead screw is threadedly connected on support frame, the bottom end of lead screw is connected with the inner ring of bearing, guide block is slidably set on fixed column.

[0007] Preferably, a plurality of reinforcing ribs are arranged in annular array on the push rod and the pressure plate.

[0008] Preferably, two left and right distributed sliding blocks are arranged on the lifting seat, and a sliding groove for vertical sliding of the sliding blocks is arranged on the vertical block.

[0009] Preferably, a stabilizing assembly is arranged on the support frame, the stabilizing assembly includes four fixed cylinders arranged in rectangular array on the support frame, springs arranged in the fixed cylinders, telescopic rods arranged on the springs, and protrusions arranged on the mounting plate, the telescopic rods and the fixed cylinders are slidably connected, and the telescopic rods are arranged on the protrusions.

[0010] Preferably, two supports are arranged on the support frame, a clamping mechanism is arranged on the supports, the clamping mechanism includes an arc-shaped clamping plate, a vertical plate arranged on the support, a threaded rod threadedly connected to the vertical plate, a connecting assembly arranged on the threaded rod, a hand wheel, and two guide rods arranged on the arc-shaped clamping plate, the guide rods and the vertical plate are slidably connected, and a plurality of rubber balls are arranged on the arc-shaped clamping plate.

[0011] Preferably, the connecting assembly includes a connecting disc coaxially arranged on the threaded rod, a limiting ring rotatably arranged in the arc-shaped clamping plate, a connecting cylinder coaxially arranged on the limiting ring, and a plurality of fixing bolts penetrating through the connecting disc and threadedly connected to the connecting cylinder, and the connecting cylinder and the arc-shaped clamping plate are rotatably connected.

[0012] Preferably, an elongated cylinder is arranged on the vertical plate, and the elongated cylinder is threadedly connected to the threaded rod.

[0013] Preferably, a base is arranged at the bottom of the support frame.

[0014] Compared with the prior art, the utility model has the following beneficial technical effects:

[0015] 1、The adjusting device arranged in the utility model can adjust the initial position of the pressure plate according to the height and size of the pile foundation, so as to ensure that the pressure plate can adapt to pile foundations of different heights, and also fully ensure the stability of the device and the straightness of the moving direction during the adjustment process, and has good practicability.

[0016] 2、The utility model discloses through setting up the clamping mechanism can the side surface of pile foundation is clamped fast and stably, guarantee the stability of pile foundation when testing, avoid the influence data, cooperate the rubber ball further improves the clamping effect, and through setting up the connecting assembly can replace the arc clamping plate and rubber ball after using multiple seriously worn, and simple and convenient operation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic diagram of the utility model;

[0018] Figure 2 It is the installation schematic diagram of the motor of the utility model;

[0019] Figure 3 It is the split schematic diagram of the stable component of the utility model;

[0020] Figure 4 It is the structure schematic diagram of the clamping mechanism of the utility model;

[0021] Figure 5 It is the structure sectional view of the embodiment of the utility model.

[0022] Fig. 1, support frame;2, vertical block;3, lifting seat;4, motor;5, lead screw;6, mounting plate;7, bearing;8, hydraulic cylinder;9, push rod;10, pressure plate;11, reinforcing rib;12, sliding block;13, sliding slot;14, fixed column;15, guide block;16, fixed cylinder;17, spring;18, telescopic rod;19, lug;20, support;21, vertical plate;22, threaded rod;23, connecting disc;24, arc clamping plate;25, limit ring;26, connecting cylinder;27, fixed bolt;28, rubber ball;29, hand wheel;30, guide rod;31, lengthening cylinder;32, base. DETAILED DESCRIPTION

[0023] Example one

[0024] As Figures 1-5 The utility model discloses a geotechnical engineering pile foundation static load test device, including support frame 1 and adjusting device, the inner side of support frame 1 is provided with mounting plate 6, is provided with hydraulic cylinder 8 on mounting plate 6, hydraulic cylinder 8 is driven to be connected with push rod 9, is provided with pressure plate 10 on push rod 9, is provided with a plurality of annular array distribution's reinforcing rib 11 on push rod 9 and pressure plate 10, reinforcing rib 11 is used for improving the structural strength of pressure plate 10 and push rod 9, guarantees the safety of equipment use, through setting up the hydraulic cylinder 8 drive push rod 9 elongation, push rod 9 drives pressure plate 10 to descend, to realize the purpose of applying static load to pile foundation.

[0025] The adjusting device comprises two vertical blocks 2 arranged on the support frame 1, a lifting seat 3 slidably connected to the vertical blocks 2, a motor 4 arranged on the lifting seat 3, a lead screw 5 drivingly connected to the motor 4, a bearing 7 and two guide blocks 15 arranged on the mounting plate 6, and two fixed columns 14 vertically arranged on the support frame 1, the lead screw 5 is threadedly connected to the support frame 1, the bottom end of the lead screw 5 is connected to the inner ring of the bearing 7, and the guide blocks 15 are slidably arranged on the fixed columns 14, a plurality of reinforcing ribs 11 arranged in an annular array are arranged on the push rod 9 and the pressure plate 10, two slide blocks 12 arranged in a left-right distribution are arranged on the lifting seat 3, and a sliding groove 13 for vertical sliding of the slide blocks 12 is arranged on the vertical block 2.

[0026] In the embodiment, when a static load needs to be applied to the pile foundation, the initial position of the pressure plate 10 needs to be adjusted according to the height of the pile foundation, so that the pressure plate 10 can adapt to pile foundations of different heights. When the position of the pressure plate 10 is adjusted, the motor 4 drives the lead screw 5 to rotate, the lead screw 5 is screwed with the support frame 1, and at the same time, the inner ring of the bearing 7 is also driven to rotate, and then the lead screw 5 applies a downward pushing force or pulling force to the mounting plate 6, and at the same time, a downward sliding pulling force or pushing force is generated to the motor 4 and the lifting seat 3, and then the mounting plate 6 drives the hydraulic cylinder 8 and the push rod 9 to lift, so as to adjust the height of the pressure plate 10. The slide blocks 12 and the sliding grooves 13 can guide and stabilize the movement of the lifting seat 3, the fixed columns 14 and the guide blocks 15 can guide and stabilize the two sides of the mounting plate 6, which fully guarantees the stability of the device during adjustment and the straightness of the moving direction, and has good practicability.

[0027] Embodiment two

[0028] As shown in Figure 1 and Figure 3 , the pile foundation static load test device provided in the embodiment, compared with the first embodiment, the bottom of the support frame 1 is provided with a base 32, the base 32 is used to increase the contact area between the support frame 1 and the ground, and improve the stability of the support frame 1 when placed. The support frame 1 is provided with a stabilizing assembly, the stabilizing assembly comprises four fixed cylinders 16 arranged in a rectangular array on the support frame 1, springs 17 arranged in the fixed cylinders 16, telescopic rods 18 arranged on the springs 17, and protrusions 19 arranged on the mounting plate 6, the telescopic rods 18 are slidably connected to the fixed cylinders 16, and the telescopic rods 18 are arranged on the protrusions 19. When the height of the pressure plate 10 is adjusted, the telescopic rods 18 will move vertically along with the mounting plate 6 through the protrusions 19, and at the same time, the springs 17 will be elongated or shortened to adapt to different heights, thereby improving the stability of the edge position of the mounting plate 6.

[0029] Embodiment three

[0030] As shown in Figure 1 ,Figure 4 and Figure 5 As shown in FIG. 1 and FIG. 2, the pile foundation static load test device provided by the embodiment is compared with the first embodiment, in the embodiment, two supports 20 are arranged on the support frame 1, a clamping mechanism is arranged on the support 20, the clamping mechanism comprises an arc-shaped clamping plate 24, a vertical plate 21 arranged on the support 20, a threaded rod 22 screwed on the vertical plate 21, a connecting assembly and a hand wheel 29 arranged on the threaded rod 22, and two guide rods 30 arranged on the arc-shaped clamping plate 24, the guide rod 30 and the vertical plate 21 are slidingly connected, a plurality of rubber balls 28 are arranged on the arc-shaped clamping plate 24, an extension cylinder 31 is arranged on the vertical plate 21, the extension cylinder 31 is screwed on the threaded rod 22, and the extension cylinder 31 is used to increase the screwing length of the threaded rod 22, so as to ensure the smooth rotation of the threaded rod 22.

[0031] The connecting assembly comprises a connecting disc 23 coaxially arranged on the threaded rod 22, a limiting ring 25 rotatably arranged in the arc-shaped clamping plate 24, a connecting cylinder 26 coaxially arranged on the limiting ring 25, and a plurality of fixing bolts 27 penetrating through the connecting disc 23 and screwed on the connecting cylinder 26, and the connecting cylinder 26 is rotatably connected with the arc-shaped clamping plate 24.

[0032] In the embodiment, before the pile foundation is detected, the threaded rod 22 is rotated by the hand wheel 29, the threaded rod 22 is screwed on the vertical plate 21, and the arc-shaped clamping plate 24 is guided by the connecting assembly and the guide rod 30, so that the threaded rod 22 drives the arc-shaped clamping plate 24 to move linearly along the axial direction of the guide rod 30 until the arc-shaped clamping plate 24 clamps the side surface of the pile foundation to ensure the stability of the pile foundation during the test, so as to avoid affecting the test data, and the rubber balls 28 can improve the friction between the arc-shaped clamping plate 24 and the pile foundation, and further ensure the stability of the clamping.

[0033] The embodiments of the utility model have been described in detail above in combination with the drawings, but the utility model is not limited to this, within the knowledge range of the technical personnel in the technical field, various changes can be made without departing from the purpose of the utility model.

Claims

1. A geotechnical engineering pile foundation static load test device, characterized in that, The utility model relates to a supporting frame (1) is provided with the mounting plate (6) in the inside, is provided with the hydraulic cylinder (8) on the mounting plate (6), the hydraulic cylinder (8) drive connection has the push rod (9), is provided with the pressure plate (10) on the push rod (9). The adjusting device comprises two vertical blocks (2) arranged on the supporting frame (1), a lifting seat (3) slidably connected to the vertical blocks (2), a motor (4) arranged on the lifting seat (3), a lead screw (5) drivingly connected to the motor (4), a bearing (7) and two guide blocks (15) arranged on the mounting plate (6), and two fixed columns (14) vertically arranged on the supporting frame (1), the lead screw (5) is threadedly connected to the supporting frame (1), the bottom end of the lead screw (5) is connected to the inner ring of the bearing (7), and the guide blocks (15) are slidably arranged on the fixed columns (14). The push rod (9) and the pressure plate (10) are provided with a plurality of reinforcing ribs (11) arranged in an annular array.

2. The geotechnical engineering pile static load testing device according to claim 1, characterized in that, The lifting seat (3) is provided with two left and right distributed sliding blocks (12), and the vertical blocks (2) are provided with sliding grooves (13) for vertical sliding of the sliding blocks (12).

3. The geotechnical engineering pile static load testing device according to claim 1, wherein, The supporting frame (1) is provided with a stabilizing assembly, the stabilizing assembly comprises four fixed cylinders (16) arranged in a rectangular array on the supporting frame (1), springs (17) arranged in the fixed cylinders (16), telescopic rods (18) arranged on the springs (17), and protrusions (19) arranged on the mounting plate (6), the telescopic rods (18) and the fixed cylinders (16) are slidably connected, and the telescopic rods (18) are arranged on the protrusions (19).

4. The geotechnical engineering pile static load testing device according to claim 1, characterized in that, The supporting frame (1) is provided with two supports (20), and the supports (20) are provided with a clamping mechanism, the clamping mechanism comprises an arc-shaped clamping plate (24), vertical plates (21) arranged on the supports (20), threaded rods (22) threadedly connected to the vertical plates (21), a connecting assembly and a hand wheel (29) arranged on the threaded rods (22), and two guide rods (30) arranged on the arc-shaped clamping plate (24), the guide rods (30) and the vertical plates (21) are slidably connected, and the arc-shaped clamping plate (24) is provided with a plurality of rubber balls (28).

5. The geotechnical engineering pile static load testing device according to claim 1, wherein, The connecting assembly comprises a connecting disc (23) coaxially arranged on the threaded rod (22), a limiting ring (25) rotatably arranged in the arc-shaped clamping plate (24), a connecting cylinder (26) coaxially arranged on the limiting ring (25), and a plurality of fixing bolts (27) penetrating through the connecting disc (23) and threadedly connected to the connecting cylinder (26), and the connecting cylinder (26) and the arc-shaped clamping plate (24) are rotatably connected.

6. A geotechnical engineering pile static load testing apparatus according to claim 5, wherein, The vertical plates (21) are provided with an elongated cylinder (31), and the elongated cylinder (31) is threadedly connected to the threaded rod (22).

7. The geotechnical engineering pile static load testing device according to claim 5, wherein, The bottom of the supporting frame (1) is provided with a base (32).

8. The geotechnical engineering pile static load testing device according to claim 1, wherein, ​

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