Self-balancing test rack for single-pile static load experiment detection

Abstract

The utility model discloses a self-balancing test rack for single pile static load experiment detection, which comprises a support frame, a secondary beam, a main beam and a balancing weight, the bottoms of two ends of the secondary beam are fixed on the top of the support frame, the main beam is arranged at the bottom of the middle end of the secondary beam, the bottom of the middle end of the main beam is connected with a hydraulic jack on the top of a pile foundation to be detected, and baffles are arranged at the front end and the rear end of the secondary beam. The balancing weights are arranged above the secondary beams, the balancing weights can be stacked layer by layer to be assembled into a whole, a groove is formed in the top end of each balancing weight, the stacked balancing weights are provided with a stacking and fixing mechanism, the stacking and fixing mechanism is formed by stacking same limiting and fixing frames layer by layer, each limiting and fixing frame comprises a clamping frame, and each clamping frame is provided with a clamping groove. According to the device, constraint is formed between the balancing weights, the situation that the balancing weights incline or single balancing weight falls off is not prone to occurring, and the stability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation detection equipment, in particular to a self-balancing test frame for single pile static load test detection. Background Art

[0002] Pile foundation is an important form of foundation, used in various construction projects with poor natural foundation conditions. Whether the pile foundation is qualified is related to the safety of the entire construction project, and the quality inspection of pile foundation has become a key link to ensure that the quality of the foundation meets the design requirements. The single pile vertical compressive static load test is the main method for testing the bearing capacity of pile foundations. It refers to the vertical load being evenly transmitted to the foundation piles of the building, and the displacement monitoring system is used to measure the settlement displacement of the pile top under different loads to obtain the corresponding Q_s curve, and then the single pile vertical compressive bearing capacity characteristic value and other parameters are determined based on the curve, providing a basis for foundation design and acceptance.

[0003] There is no constraint between the counterweights of the existing self-balancing test frame on the market, and the counterweights are prone to tilt or fall off individually. Therefore, a self-balancing test frame for single pile static load test detection is proposed to address the above problems. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] A self-balancing test frame for single pile static load test detection comprises a support frame, a secondary beam, a main beam and a counterweight block. The bottoms of both ends of the secondary beam are fixed to the top of the support frame, the bottom of the middle end of the secondary beam is provided with a main beam, the bottom of the middle end of the main beam is connected to the hydraulic jack on the top of the pile foundation to be detected, baffles are provided at the front and rear ends of the secondary beam, and the counterweight block is arranged above the secondary beam. The counterweight block is composed of several blocks, and the several counterweight blocks can be stacked layer by layer and assembled into a whole. The top of each counterweight block is provided with a groove, and a stacking fixing mechanism is installed on the stacked counterweight blocks. The stacking fixing mechanism is formed by stacking the same limiting fixing frames layer by layer. The limiting fixing frame comprises a positioning frame, and the tops of the front and rear ends of the positioning frame are provided with connecting sleeves, and the front and rear walls of the connecting sleeve are provided with threaded holes. The rear end of the bolt is fixed to the inside of the threaded holes on the front and rear walls of the connecting sleeve. Through holes are provided at the front and rear ends of the positioning frame, and the top plate of the positioning frame is fixed to the inside of the counterweight groove, and the bottom end of the positioning frame is fixed to the inside of the baffle by bolts.

[0006] Preferably, an external connection plate is provided on one side of the bottom end of the support frame, and positioning rods are provided in sequence on the external connection plate at the same intervals from front to back, and a side fixing frame is mounted on the positioning rods.

[0007] Preferably, a through hole connected to the positioning rod is provided inside the side fixing frame.

[0008] Preferably, reaction force quick connection mechanisms are provided inside both ends of the secondary beam.

[0009] Preferably, the reaction force quick connection mechanism includes a top plate and a bottom plate, the top plate is installed inside the grooves at both ends of the secondary beam, and the bottom plate is installed at the bottom of both ends of the secondary beam. External connecting rods are provided at the tops of the front and rear ends of the bottom plate, and the top ends of the external connecting rods are connected to the tops of the two ends of the top plate and fixed by nuts. A threaded external connecting end is provided at the bottom of the bottom plate.

[0010] Compared with the prior art, the beneficial effects of the present invention are: (1) after the counterweight blocks are stacked, they are fixed by a stacking fixing mechanism, forming constraints between the counterweight blocks, making it difficult for the counterweight blocks to tilt or fall individually, thereby improving the stability of the device.

[0011] (2) The top plate of the device is fixed inside the groove above the secondary beam, and the bottom plate is fixed below the top plate through an external connecting rod and a nut. When external reaction force is required for detection, the external tension connecting frame can be directly connected to the threaded external end, thereby improving the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the limit fixing frame of the utility model;

[0015] Figure 3 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0016] Figure 4 It is a schematic diagram of the structure of the reaction force quick connection mechanism of the utility model.

[0017] Explanation of the reference numerals in the figure: support frame 1, secondary beam 2, main beam 3, external plate 4, positioning rod 5, side fixing frame 6, superimposed fixing mechanism 7, positioning frame 71, through hole 72, connecting sleeve 73, bolt 74, threaded hole 75, counterweight block 8, baffle 9, reaction force quick connection mechanism 10, top plate 101, external rod 102, nut 103, bottom plate 104, threaded external end 105. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] See also Figure 1-4 The utility model provides an embodiment: a self-balancing test frame for a single pile static load test, comprising a support frame 1, a secondary beam 2, a main beam 3 and a counterweight 8. The bottoms of both ends of the secondary beam 2 are fixed to the top of the support frame 1, the middle bottom of the secondary beam 2 is provided with a main beam 3, the middle bottom of the main beam 3 is connected to the hydraulic jack on the top of the pile foundation to be tested, the front and rear ends of the secondary beam 2 are provided with baffles 9, the counterweight 8 is arranged above the secondary beam 2, the counterweight 8 is composed of several blocks, and the several counterweights 8 can be stacked layer by layer to form a whole. The top of each counterweight 8 is provided with a groove, and the stacked counterweight 8 is equipped with a stacking fixing mechanism 7, which is formed by stacking the same limiting fixing frame layer by layer, and the limiting fixing frame includes a positioning frame 71, and the tops of the front and rear ends of the positioning frame 71 are provided with connecting sleeves 73, and the front and rear walls of the connecting sleeve 73 are provided with threaded holes 75, and the rear end of the bolt 74 is fixed to the threaded holes 75 on the front and rear walls of the connecting sleeve 73 When the locking cam 77 is in place, the locking cam 77 is in place and the locking cam 78 is in place.

[0021] An external plate 4 is provided on one side of the bottom end of the support frame 1, and positioning rods 5 are provided on the external plate 4 at the same intervals from front to back. A side fixing frame 6 is installed on the positioning rod 5. The side fixing frame 6 fixes the position of the two ends of the counterweight block 8 to facilitate the flat placement of the counterweight block 8. A through hole connected to the positioning rod 5 is provided inside the side fixing frame 6.

[0022] A reaction force quick connection mechanism 10 is provided inside both ends of the secondary beam 2, and the reaction force quick connection mechanism 10 includes a top plate 101 and a bottom plate 104. The top plate 101 is installed inside the grooves at both ends of the secondary beam 2, and the bottom plate 104 is installed at the bottom of both ends of the secondary beam 2. External rods 102 are provided on the tops of the front and rear ends of the bottom plate 104. The top end of the external rod 102 is connected to the tops of both ends of the top plate 101 and is fixed by a nut 103. A threaded external end 105 is provided at the bottom of the bottom plate 104. The top plate 101 is fixed inside the groove above the secondary beam 2, and the bottom plate 104 is fixed below the top plate 101 by the external rod 102 and the nut 103. When external reaction force is required for detection, the external tension connection frame can be directly connected to the threaded external end 105 to improve the convenience of use.

[0023] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A self-balancing test frame for single pile static load test detection, characterized in that: The invention comprises a support frame (1), a secondary beam (2), a main beam (3) and a counterweight (8), wherein the bottoms of both ends of the secondary beam (2) are fixed to the top of the support frame (1), the middle bottom of the secondary beam (2) is provided with a main beam (3), the middle bottom of the main beam (3) is connected to a hydraulic jack on the top of the pile foundation to be tested, baffles (9) are provided at the front and rear ends of the secondary beam (2), the counterweight (8) is arranged above the secondary beam (2), the counterweight (8) is composed of a plurality of counterweights (8), and the plurality of counterweights (8) can be stacked layer by layer to form a whole, each counterweight (8) is provided with a groove at the top, and a stacking fixing mechanism is installed on the stacked counterweights (8). The stacking fixing mechanism (7) is formed by stacking identical limiting fixing frames in layers, the limiting fixing frames comprising a positioning frame (71), the tops of the front and rear ends of the positioning frame (71) are provided with connecting sleeves (73), the front and rear walls of the connecting sleeve (73) are provided with threaded holes (75), the rear ends of bolts (74) are fixed to the inside of the threaded holes (75) of the front and rear walls of the connecting sleeve (73), the front and rear ends of the positioning frame (71) are provided with through holes (72), the top plate of the positioning frame (71) is fixed to the inside of the groove of the counterweight block (8), and the bottom end of the positioning frame (71) is fixed to the inside of the baffle (9) by bolts (74).

2. The self-balancing test frame for single pile static load test detection according to claim 1, characterized in that: An external connection plate (4) is provided at one side of the bottom end of the support frame (1), and positioning rods (5) are provided on the external connection plate (4) at the same intervals from front to back, and a side fixing frame (6) is mounted on the positioning rods (5).

3. The self-balancing test frame for single pile static load test detection according to claim 2, characterized in that: The side fixing frame (6) is provided with a through hole inside which is connected to the positioning rod (5).

4. The self-balancing test frame for single pile static load test detection according to claim 1, characterized in that: Reaction force quick connection mechanisms (10) are provided inside the two ends of the secondary beam (2).

5. The self-balancing test frame for single pile static load test detection according to claim 4, characterized in that: The reaction force quick connection mechanism (10) comprises a top plate (101) and a bottom plate (104), wherein the top plate (101) is mounted inside grooves at both ends of the secondary beam (2), and the bottom plate (104) is mounted at the bottoms of both ends of the secondary beam (2). External connecting rods (102) are provided at the tops of the front and rear ends of the bottom plate (104), and the top ends of the external connecting rods (102) are connected to the tops of both ends of the top plate (101) and fixed by nuts (103), and the bottom of the bottom plate (104) is provided with threaded external connecting ends (105).

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