Foundation flat plate load test device

Abstract

The utility model discloses a foundation flat plate load test device, which relates to the technical field of foundation bearing capacity test, comprises stand columns and a cross rod, and is characterized in that the two stand columns are symmetrically arranged, the rod wall of the cross rod is movably sleeved with a sliding sleeve, two hydraulic cylinders are fixedly arranged on the lower side of the sliding sleeve, and the two hydraulic cylinders are connected with the two stand columns. Pressurizing plates are fixedly arranged at the tail ends of piston rods of the two hydraulic cylinders, and pressure sensors are fixedly embedded in the positions, corresponding to the tail ends of the piston rods of the hydraulic cylinders, in the pressurizing plates; a first cavity is formed in the lower side of the interior of the sliding sleeve, rotating rods are rotationally arranged on the two sides of the interior of the first cavity, the rod walls of the rotating rods are fixedly sleeved with gears, racks are arranged on the two sides of the gears in a meshed mode, movable rods are fixedly arranged on one sides of the racks, and a plurality of clamping grooves are formed in the lower side of the transverse rod. The position of the pressurizing plate of the device can be adjusted, so that different positions of a foundation can be monitored conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation bearing capacity testing, in particular to a foundation plate load testing device. Background Art

[0002] Load test refers to applying vertical load to the foundation through a bearing plate on a natural foundation. The deformation modulus of the soil under natural conditions, the continuity of soil deformation over time, and the estimation of the foundation bearing capacity under conditions where the load plate is close to the actual foundation are measured through a certain vertical pressure.

[0003] In traditional foundation plate load test devices, the pressure plate can usually only move vertically. Therefore, when conducting load tests on different foundations and different positions, the entire device needs to be moved. Since the device is very bulky and time-consuming and laborious to move, it will reduce the efficiency of the test work. Utility Model Content

[0004] In view of the problems existing in the above-mentioned existing foundation plate load test device, the present utility model is proposed.

[0005] Therefore, the purpose of the utility model is to provide a foundation flat plate load test device, which solves the problem that in the foundation flat plate load test device in the prior art, the pressure plate can usually only move in the vertical direction. Therefore, when load tests are carried out on different foundations and different positions, the position of the entire device needs to be moved. Since the device is very bulky, it is time-consuming and laborious to move, which reduces the efficiency of the test work.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A foundation plate load test device, comprising a column and a cross bar, wherein two columns are symmetrically arranged, a sliding sleeve is provided on the rod wall movable sleeve of the cross bar, two hydraulic cylinders are fixedly arranged on the lower side of the sliding sleeve, a pressure plate is fixedly arranged at the ends of the piston rods of the two hydraulic cylinders, and a pressure sensor is fixedly embedded in the pressure plate at a position corresponding to the ends of the piston rods of the hydraulic cylinders;

[0008] A first cavity is provided on the lower inner side of the sliding sleeve, and rotating rods are rotatably provided on both sides of the first cavity, and a gear is fixedly sleeved on the rod wall of the rotating rod, and racks are meshed on both sides of the gear, and a movable rod is fixedly provided on one side of the rack, and a plurality of slots are provided on the lower side of the cross bar, and the ends of the two movable rods that are separated from each other extend to the outside of the first cavity, and the upper end of the movable rod on one side is engaged with the corresponding slot;

[0009] The upper side of the pressure plate is provided with a pushing mechanism for pushing the lower movable rod;

[0010] A second cavity is provided inside the movable rod, and a reset mechanism for driving the movable rod to reset is arranged inside the second cavity.

[0011] Preferably, the pushing mechanism includes a fixed rod and a push plate, the fixed rod is fixedly arranged in the middle of the upper surface of the pressure plate, two push plates are arranged below the two movable rods on the lower side, and the upper end of the fixed rod is fixedly connected to the pressure plate.

[0012] Preferably, the reset mechanism includes a block and a spring, the block is slidably arranged inside the second cavity, a support rod is fixedly arranged on one side of the block, one end of the support rod extends to the outside of the second cavity and is fixedly connected to the inner wall of the first cavity, and the spring is fixedly arranged on the side of the block away from the support rod, and the other end of the spring is fixedly connected to the inner wall of the second cavity.

[0013] Preferably, the cross-sections of the stopper and the second cavity are both rectangular.

[0014] Preferably, a plurality of balls are rollingly embedded in the upper inner wall of the sliding sleeve.

[0015] Preferably, a mounting plate is fixedly provided at the lower end of the column.

[0016] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0017] 1. The utility model can carry out a normal foundation plate load test by extending the piston rod of the hydraulic cylinder to push the pressure plate downward. When the detection position needs to be adjusted, the piston rod of the hydraulic cylinder contracts, which can drive the fixed rod to move upward, and the fixed rod drives the push plate to move upward, so that the push plate pushes the two lower movable rods upward, so that the rack on one side moves, and the rack drives the gear to rotate, so that the rack on the other side moves, thereby making the upper movable rod move downward and leave the corresponding slot, thus releasing the limit on the sliding sleeve, and sliding the sliding sleeve along the cross bar, so that the position of the pressure plate can be adjusted, which is convenient for detecting different positions.

[0018] 2. The utility model, in a natural state, allows the spring force to move the movable rod to the side away from the block, so that the upper movable rod is inserted into the corresponding slot, thereby limiting the position of the sliding sleeve and the cross bar and maintaining the stability of the detection work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 This is a structural schematic diagram of a foundation plate load test device proposed by the utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the internal structure;

[0022] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of part A in the middle.

[0023] Description of reference numerals:

[0024] 1. Crossbar; 2. Vertical column; 3. Mounting plate; 4. Sliding sleeve; 5. Hydraulic cylinder; 6. Pressure plate; 7. Fixed rod; 8. Push plate; 9. Ball bearing; 10. Rotating rod; 11. Gear; 12. Movable rod; 13. Rack; 14. Stopper; 15. Support rod; 16. Spring. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The utility model embodiment discloses a foundation plate load test device.

[0027] Reference Figure 1-3 A foundation plate load test device comprises a column 2 and a cross bar 1, wherein the two columns 2 are symmetrically arranged, and a mounting plate 3 is fixedly arranged at the lower end of the column 2 to facilitate the installation and fixing of the device, and a sliding sleeve 4 is provided on the rod wall of the cross bar 1, and a plurality of balls 9 are rollingly embedded on the upper inner wall of the sliding sleeve 4, and two hydraulic cylinders 5 are fixedly arranged on the lower side of the sliding sleeve 4, and a pressure plate 6 is fixedly arranged at the end of the piston rod of the two hydraulic cylinders 5, and a pressure sensor is fixedly embedded in the inner part of the pressure plate 6 and at a position corresponding to the end of the piston rod of the hydraulic cylinder 5;

[0028] Reference Figure 1-3 A first cavity is provided on the lower inner side of the sliding sleeve 4, and rotating rods 10 are rotatably provided on both sides of the first cavity. A gear 11 is fixedly sleeved on the rod wall of the rotating rod 10, and racks 13 are meshed on both sides of the gear 11. A movable rod 12 is fixedly provided on one side of the rack 13. A plurality of slots are provided on the lower side of the cross bar 1, and the ends of the two movable rods 12 that are away from each other extend to the outside of the first cavity, and the upper end of the movable rod 12 on one side is engaged with the corresponding slot.

[0029] Reference Figure 1-3A pushing mechanism for pushing the lower movable rod 12 is provided on the upper side of the pressure plate 6, and the pushing mechanism includes a fixed rod 7 and a push plate 8. The fixed rod 7 is fixedly arranged in the middle of the upper surface of the pressure plate 6, and the two push plates 8 are arranged below the two lower movable rods 12. The upper end of the fixed rod 7 is fixedly connected to the pressure plate 6.

[0030] Reference Figure 1-3 A second cavity is provided inside the movable rod 12, and a reset mechanism for driving the movable square rod to reset is arranged inside the second cavity. The reset mechanism includes a stopper 14 and a spring 16. The stopper 14 is slidably arranged inside the second cavity. A support rod 15 is fixedly arranged on one side of the stopper 14. One end of the support rod 15 extends to the outside of the second cavity and is fixedly connected to the inner wall of the first cavity. The spring 16 is fixedly arranged on the side of the stopper 14 away from the support rod 15, and the other end of the spring 16 is fixedly connected to the inner wall of the second cavity. The cross-sections of the stopper 14 and the second cavity are both rectangular, so that the stopper 14 cannot rotate, that is, it can slide stably.

[0031] When the cam 12 is in the working state, the piston rod of the hydraulic cylinder 5 is extended to push the pressure plate 6 downward, so that the normal foundation plate load test can be carried out. When the detection position needs to be adjusted, the piston rod of the hydraulic cylinder 5 is retracted, so that the fixed rod 7 can be driven to move upward, and the fixed rod 7 drives the push plate 8 to move upward, so that the push plate 8 pushes the two movable rods 12 on the lower side upward, so that the rack 13 on one side is moved, and the rack 13 drives the gear 11 to rotate, so that the rack 13 on the other side is moved, thereby making the upper movable rod 12 move downward and leave the corresponding slot, so that the limit of the sliding sleeve 4 is released, and the sliding sleeve 4 is slid along the cross bar 1, so that the position of the pressure plate 6 can be adjusted, so that it is convenient to detect different positions. In the natural state, the elastic force of the spring 16 makes the movable rod 12 move to the side away from the stopper 14, so that the upper movable rod 12 is inserted into the corresponding slot, so that the sliding sleeve 4 and the cross bar 1 can be limited, so as to keep the stability of the detection work.

[0032] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A foundation plate load test device, comprising a column (2) and a crossbar (1), characterized in that: The two uprights (2) are symmetrically arranged, the rod wall movable sleeve of the cross rod (1) is provided with a sliding sleeve (4), two hydraulic cylinders (5) are fixedly arranged on the lower side of the sliding sleeve (4), and pressure plates (6) are fixedly arranged at the ends of the piston rods of the two hydraulic cylinders (5), and a pressure sensor is fixedly embedded in the interior of the pressure plate (6) and at a position corresponding to the ends of the piston rods of the hydraulic cylinders (5); A first cavity is provided on the lower inner side of the sliding sleeve (4), and rotating rods (10) are rotatably provided on both sides of the first cavity. A gear (11) is fixedly sleeved on the rod wall of the rotating rod (10), and racks (13) are meshed on both sides of the gear (11). A movable rod (12) is fixedly provided on one side of the rack (13). A plurality of slots are provided on the lower side of the cross bar (1), and the ends of the two movable rods (12) that are separated from each other extend to the outside of the first cavity, and the upper end of one side of the movable rod (12) is engaged with the corresponding slot. The upper side of the pressure plate (6) is provided with a pushing mechanism for pushing the lower movable rod (12); A second cavity is provided inside the movable rod (12), and a reset mechanism for driving the movable rod to reset is arranged inside the second cavity.

2. The foundation plate load test device according to claim 1, characterized in that: The pushing mechanism comprises a fixed rod (7) and a push plate (8); the fixed rod (7) is fixedly arranged in the middle of the upper surface of the pressure plate (6); two push plates (8) are arranged below two movable rods (12) on the lower side; and the upper end of the fixed rod (7) is fixedly connected to the pressure plate (6).

3. The foundation plate load test device according to claim 1, characterized in that: The reset mechanism comprises a stopper (14) and a spring (16); the stopper (14) is slidably arranged inside the second cavity; a support rod (15) is fixedly arranged on one side of the stopper (14); one end of the support rod (15) extends to the outside of the second cavity and is fixedly connected to the inner wall of the first cavity; the spring (16) is fixedly arranged on a side of the stopper (14) away from the support rod (15); and the other end of the spring (16) is fixedly connected to the inner wall of the second cavity.

4. The foundation plate load test device according to claim 3, characterized in that: The cross sections of the stopper (14) and the second cavity are both rectangular.

5. The foundation plate load test device according to claim 1, characterized in that: A plurality of balls (9) are rollingly embedded on the inner wall of the upper side of the sliding sleeve (4).

6. The foundation plate load test device according to claim 5, characterized in that: A mounting plate (3) is fixedly provided at the lower end of the column (2).

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