CN209741944U - Improved self-balancing pile measuring equipment - Google Patents

Abstract

The utility model relates to an engineering design technical field, and an improved generation self-balancing survey stake equipment is disclosed, including the pile body, bury self-balancing case and the static load pressure device of pile body underground in advance, the self-balancing case divide into upper segment stake and hypomere stake with the pile body, the self-balancing incasement is equipped with the jack, the jack passes through the fixed intercommunication of oil pipe and outside oil pump, the static load pressure device includes two fixed plates, two dead levers of the upper end symmetry fixedly connected with of fixed plate, the same backup pad of upper end fixedly connected with of four dead levers, the pole wall fixedly connected with layer board that the dead lever is close to the upper end, the upper end of layer board is rotated through ball bearing and is connected with the screw rod, the upper end and the fixedly connected. The utility model provides an original self-balancing method be in the problem that the calculation balance point is difficult to the accuracy, the effectual experimental stake of having solved just by ejecting the problem that leads to experimental failure or can not survey limit load before not reaching limit load.

Description

An improved self-balancing pile measuring equipment

technical field

The utility model relates to the technical field of engineering design, in particular to an improved self-balancing pile measuring device.

Background technique

In the engineering design, it is necessary to test the relevant parameters of the single pile. At present, static load test method, dynamic non-destructive testing method and self-balancing method are mostly used for testing, but these three test methods have certain defects. The static load test method assumes that The component is under axial compression, using a method similar to the actual working conditions, through static load compression, the relationship curve between load and displacement, end resistance and friction force is obtained, and the vertical compressive ultimate bearing capacity of a single pile is obtained . Although the test results obtained through traditional static load tests can be directly used in engineering design, the instruments are very complicated. It is often necessary to install anchor piles on site to make reaction beams and weight platforms, resulting in labor and time-consuming, and high test costs; 2. The dynamic non-destructive testing method is to load the dynamic load through the binding loading instrument, causing the vibration of the pile top, and the power is not damaged. There will be obvious acceleration during the test, and the physical data of the pile movement is used to analyze the properties of the pile body, so as to determine the bearing capacity of the pile. However, the dynamic load applied to the pile by the low-strain method is less than the load of the pile, and the ultimate load of the pile cannot be measured. The high-strain method is based on the principle of stress propagation, and the collected data is in motion, so the accuracy of the test results is not high; self-balancing The method utilizes the principle of self-balanced reaction force of the test pile, and pre-buries the self-balancing box of the pile body. During the test, the oil pump placed on the ground applies load to the jack of the self-balancing box to the upper and lower piles, so that the upper section of the pile produces an upward displacement. , so that the pile side friction resistance slowly reaches the limit state, and at the same time, downward pressure is applied to the lower section of the pile to cause the lower section of the pile to move downward, so that the lower section of the pile reaches the limit state, resulting in limit friction and end resistance. The self-balancing method has the advantages of economy (simple test device, short time, reusable, saving labor and test cost) convenience (the load and displacement curve obtained by using the principle of self-balancing to carry out the reaction force test can be obtained through simple conversion. ultimate bearing capacity) safety (there is no piled load and reaction frame on the top of the pile, engineers only need to control the instrument to apply the load) but the existing method of calculating the balance point is difficult to accurately calculate the position of the balance point, resulting in the upper The pile was jacked up early, resulting in the failure of the test, and it was difficult to measure the ultimate vertical bearing capacity of the pile.

Utility model content

The purpose of the utility model is to solve the problem of imperfect test device and method for single pile testing in the prior art, and propose an improved self-balancing pile measuring equipment.

In order to achieve the above object, the utility model adopts the following technical solutions:

An improved self-balancing pile measuring equipment, including a pile body, a self-balancing box for pre-embedding the pile body, and a static load pressurization device. The self-balancing box divides the pile body into an upper pile and a lower pile. A jack is provided, and the jack is fixedly communicated with the external oil pump through the oil pipe. The static load pressurization device includes two fixed plates, and the upper ends of the fixed plates are symmetrically fixedly connected with two fixed rods, and the four fixed rods The upper end of the fixed rod is fixedly connected with the same support plate, the rod wall close to the upper end of the fixed rod is fixedly connected with a supporting plate, the upper end of the supporting plate is connected with a screw through a ball bearing, the upper end of the screw runs through the upper end of the supporting plate and A driven gear is fixedly connected, and a motor is fixedly connected to the lower end of the support plate. The output shaft at the upper end of the motor penetrates the surface of the support plate and is fixedly connected with a driving gear meshing with four driven gears. The four screws The same lifting plate is threadedly connected, and the center of the lower end of the lifting plate is fixedly connected with a pressing rod, and the lower end of the pressing rod is fixedly connected with a pressing plate.

Preferably, the side wall of the fixing plate is fixedly connected with an L-shaped positioning plate, the surface of the L-shaped positioning plate is provided with screw holes, and the internal threads of the screw holes are connected with positioning bolts.

Preferably, two universal wheels are symmetrically fixedly connected to the lower end of the fixing plate.

Preferably, the upper end of the screw runs through the surface of the support plate through a through hole opened on the surface of the support plate, and the inside of the through hole is rotatably socketed on the outside of the screw through a ball bearing.

Preferably, four limit sliders are symmetrically fixedly connected to the side wall of the support plate, and the rod wall of the fixed rod is provided with a limit chute matching with the limit sliders and arranged along the vertical direction.

Compared with the prior art, the utility model provides an improved self-balancing pile measuring equipment, which has the following beneficial effects:

In the improved self-balancing pile measuring equipment, during the test, the static load pressurization device is moved to the top of the pile body through the universal wheel, and the static load pressurization device is firmly fixed by the L-shaped positioning plate and the limit bolt, and the static load pressurization device is fixed by placing The oil pump on the ground applies load to the jack of the self-balancing box to the upper and lower piles, causing the upper piles to displace upwards, so that the side frictional resistance of the piles will gradually reach the limit state, and at the same time apply downward pressure to the lower piles to make the lower piles generate The downward movement makes the lower section of the pile reach the limit state, resulting in limit frictional resistance and end resistance, and starts the motor, which drives the driving gear to rotate, and uses the meshing effect of the driving gear and the driven gear to drive the four screws to rotate, and then uses the screw and the driven gear to rotate. The threaded connection of the lifting plate makes the lifting plate push the pressure rod down, and then apply a stable static force to the upper end of the pile body through the pressure plate. This test method integrates the static load test and the self-balancing pile measurement method. The static force applied is smaller than that of the original static load test, which reduces the manpower and material resources consumed by the original static load test to apply a huge static force. The problem that it is difficult to measure the ultimate vertical bearing capacity of the pile due to the failure of the test due to being jacked up solves the problem that the original self-balancing method is difficult to calculate the balance point accurately, and effectively solves the problem that the test pile is jacked up before reaching the ultimate load. Problems that lead to test failure or failure to measure the ultimate load can greatly improve the success rate of the test, and a more complete Q-S (settlement-displacement) curve can be obtained, which also has the advantages of self-balancing method in economy, convenience and safety.

Moreover, the parts not involved in the device are the same as the existing technology or can be realized by using the existing technology. The utility model solves the problem that the original self-balancing method is difficult to calculate the balance point accurately, and effectively solves the problem that the test pile does not reach the The problem that the test fails or the ultimate load cannot be measured due to being ejected before the ultimate load.

Description of drawings

Fig. 1 is the structural representation of a kind of improved self-balancing pile measuring equipment that the utility model proposes;

Fig. 2 is a schematic diagram of the force on the pile body of an improved self-balancing pile measuring device proposed by the utility model.

In the figure: 1 pile body, 2 self-balancing box, 3 upper pile, 4 lower pile, 5 jack, 6 oil pump, 7 fixed plate, 8 fixed rod, 9 support plate, 10 pallet, 11 screw, 12 driven gear, 13 motors, 14 driving gears, 15 lifting plates, 16 pressure bars, 17 pressing plates, 18 L-shaped positioning plates, 19 universal wheels.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

In describing the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation , are constructed and operated in a specific orientation and therefore cannot be construed as limiting the invention.

Referring to Figure 1-2, an improved self-balancing pile measuring equipment includes a pile body 1, a self-balancing box 2 for pre-embedding the pile body and a static load pressurization device. The self-balancing box 2 divides the pile body 1 into the upper pile 3 and the lower pile 4, the self-balancing box 2 is provided with a jack 5, and the jack 5 is fixedly communicated with the external oil pump 6 through the oil pipe. Fixed rods 8, the upper ends of the four fixed rods 8 are fixedly connected with the same support plate 9, the rod walls near the upper ends of the fixed rods 8 are fixedly connected with supporting plates 10, and the upper ends of the supporting plates 10 are connected with screw rods 11 through ball bearings. The upper end of 11 runs through the upper end of support plate 9 and is fixedly connected with driven gear 12, and the lower end of support plate 9 is fixedly connected with motor 13, and the output shaft of the upper end of motor 13 penetrates the surface of support plate 9 and is fixedly connected with four driven gears. The driving gear 14 of gear 12 meshes, and four screw rods 11 are threadedly connected with same lifting plate 15, and the lower end center of lifting plate 15 is fixedly connected with depression bar 16, and the lower end of depression bar 16 is fixedly connected with pressing plate 17.

The side wall of the fixed plate 7 is fixedly connected with an L-shaped positioning plate 18, and the surface of the L-shaped positioning plate 18 is provided with a screw hole, and the internal thread of the screw hole is connected with a positioning bolt.

Two universal wheels 19 are symmetrically fixedly connected to the lower end of the fixed plate 7 .

The upper end of the screw rod 11 runs through the surface of the support plate 9 through the through hole provided on the surface of the support plate 9 , and the through hole is rotatably sleeved on the outside of the screw rod 11 through a ball bearing.

The side wall of the support plate 9 is symmetrically fixedly connected with four limit sliders, and the rod wall of the fixed rod 8 is provided with a limit chute matched with the limit sliders and arranged vertically.

In the utility model, during use and test, the static load pressurizing device is moved to the top of the pile body 1 through the universal wheel 19, and the static load pressurizing device is firmly fixed by the L-shaped positioning plate 18 using the limit bolt, Through the oil pump 6 placed on the ground, the jack 5 of the self-balancing box 2 applies load to the upper and lower piles, so that the upper pile 3 is displaced upward, and the frictional resistance on the side of the pile gradually reaches the limit state. The lower pressure causes the lower pile 4 to move downward, so that the lower pile 4 reaches the limit state, produces limit friction and end resistance, and starts the motor 13, which drives the driving gear 14 to rotate, and utilizes the driving gear 14 and the driven gear The meshing effect of 12 drives four screws 11 to rotate, and then utilizes the threaded connection between the screws 11 and the lifting plate 15 to make the lifting plate 15 push the pressure rod 16 to move down, and then apply a stable static force to the upper end of the pile body 1 through the pressure plate 17 , such a test method integrates the static load test and the self-balancing pile measurement method, and the static force applied on the top of the pile is smaller than that of the original static load test, which reduces the huge static force of the original static load test. Consumed manpower and material resources, after the static force is applied on the top of the pile, it avoids the problem that the upper pile 3 is jacked up early during the test, which leads to the failure of the test and it is difficult to measure the ultimate vertical bearing capacity of the pile, and solves the problem of the original self-balancing method in the calculation The problem that the balance point is difficult to be accurate effectively solves the problem that the test pile is ejected before reaching the ultimate load, which leads to the failure of the test or the failure to measure the ultimate load. It greatly improves the success rate of the test and can obtain a more complete Q-S (settlement- Displacement) curve, also has the advantages of self-balancing method economy, convenience and safety.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (5)

1. An improved self-balancing pile measuring equipment, including a pile body (1), a self-balancing box (2) for pre-embedding the pile body, and a static load pressurization device, characterized in that the self-balancing box (2) will The pile body (1) is divided into an upper section pile (3) and a lower section pile (4). The self-balancing box (2) is equipped with a jack (5), and the jack (5) is connected to the external oil pump (6) through the oil pipe. Fixed and connected, the static load pressurization device includes two fixed plates (7), the upper ends of the fixed plates (7) are symmetrically fixedly connected with two fixed rods (8), and the four fixed rods (8) The upper end is fixedly connected with the same support plate (9), the rod wall near the upper end of the fixed rod (8) is fixedly connected with a supporting plate (10), and the upper end of the supporting plate (10) is connected with a screw rod ( 11), the upper end of the screw (11) runs through the upper end of the support plate (9) and is fixedly connected with a driven gear (12), and the lower end of the support plate (9) is fixedly connected with a motor (13), and the motor (13) The output shaft at the upper end runs through the surface of the support plate (9) and is fixedly connected with the driving gear (14) meshing with the four driven gears (12), and the four screws (11) are threaded to have the same lift A plate (15), a pressure rod (16) is fixedly connected to the center of the lower end of the lifting plate (15), and a pressure plate (17) is fixedly connected to the lower end of the pressure rod (16). 2. An improved self-balancing pile measuring device according to claim 1, characterized in that, the side wall of the fixed plate (7) is fixedly connected with an L-shaped positioning plate (18), and the L-shaped positioning plate The surface of (18) is provided with a screw hole, and the internal thread of the screw hole is connected with a set bolt. 3. The improved self-balancing pile measuring equipment according to claim 1, characterized in that two universal wheels (19) are symmetrically and fixedly connected to the lower end of the fixing plate (7). 4. An improved self-balancing pile measuring device according to claim 1, characterized in that the upper end of the screw (11) penetrates the surface of the support plate (9) through a through hole opened on the surface of the support plate (9) , and the through hole is rotated and sleeved on the outside of the screw rod (11) through the ball bearing. 5. An improved self-balancing pile measuring device according to claim 1, characterized in that, the side wall of the support plate (9) is symmetrically fixedly connected with four limit sliders, and the fixed rod (8 ) is provided with a limit chute that matches the limit slider and is arranged vertically on the rod wall.