Hydraulic counterforce system in limited space
Through the counterweight frame and pile frame system, the moving pulley and concrete counterweight are used to provide reaction force, and combined with the automatic hydraulic jack, the problem of pile driving first and then construction bearings in confined space is solved, and the construction quality and efficiency are improved.
Patent Information
- Application Number
- CN202422249456.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-13
AI Technical Summary
Under confined space, it is difficult for the prior art to realize pile driving first and then construction of the bearing, and the traditional methods are complex in construction and difficult to guarantee quality. Especially light buildings cannot provide sufficient reaction force to press into steel pipe piles.
The counterweight frame and pile frame system are adopted, and the moving pulley and concrete counterweight are used to provide downward pressure. The steel pipe piles are pressed into the soil layer with an automatic hydraulic jack. The movement and position adjustment of the pile frame is achieved through the jack and roller, and the construction sequence of the pile foundation and the bearing are optimized.
It realizes the construction of the bearing in the confined space, which improves the construction quality and efficiency, and solves the problem that the pile foundation holes reserved on the bearing in the traditional method greatly affect the construction quality. It is suitable for light-weight buildings.
Smart Images
Figure CN223119617U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction, in particular to a hydraulic reaction force system under limited space. Background Art
[0002] The first thing in the renovation of old houses is the renovation of the foundation. The change of the upper structure load of the original building and the aging of the foundation will cause the original foundation to be unable to bear the upper load. Therefore, it is necessary to reinforce the original foundation. The old building itself has a basement or a floor slab. The floor slab cannot be chiseled open in a large area. The basement space is narrow. Generally, large pile machines cannot enter the basement or the building for construction.
[0003] At present, the steel pipe anchor pile jacking method is widely used in the market for foundation reinforcement. The specific construction method is as follows: 1. Break the floor slab around the original bearing platform, implant steel bars in the original bearing platform to increase the size of the original bearing platform, and reserve steel pipe pile holes in the enlarged bearing platform area; 2. After pouring concrete for the enlarged bearing platform, fix the pile machine on the enlarged bearing platform and press the steel pipe pile into the soil through the reserved holes. Because the pile machine is fixed to the bearing platform, the pile machine can use the load of the building to provide sufficient reaction force to press the steel pipe pile. However, this method has a complex construction process, many procedures, and the steel pipe pile holes reserved on the bearing platform are too large, resulting in difficult binding of the bearing platform steel bars at the holes, and it is difficult to guarantee the construction quality. Moreover, some buildings are too light to provide sufficient reaction force to press the steel pipe pile. To sum up, how to drive piles first and then construct the bearing platform without using the reaction force of the original structure to press the piles has become an urgent problem in this field. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a hydraulic reaction force system under limited space in view of the deficiencies of the prior art, which includes a counterweight frame and a pile frame. The counterweight frame includes a counterweight, a pulley block, a steel frame, a pulley track and a counterweight bracket. The counterweight is located inside the counterweight frame. The pulley block is fixedly connected with the steel frame. The pulley track is a combination of a track and a pulley to ensure the free sliding of the counterweight bracket and the steel frame. The pile frame includes a frame body, an automatic hydraulic jack, an electric hoist, a steel pipe pile, a lifting wheel, a wire rope tension regulator, a scale rail and a section steel support rod. The automatic hydraulic jack is connected with the section steel support rod. The section steel support rod is sleeved on the scale rail. The upper part of the electric hoist is fixed on the pile frame, and the lower part is fixed to the section steel support rod through a wire rope. The wire rope tension regulator adjusts the tightness of the wire rope on the pulley block by rotating a gear. The scale rail is fixed on the pile frame and serves as a sliding track for the section steel support rod.
[0005] Preferably, a cross pile shoe is welded to the first standard steel pipe pile of the steel pipe pile. The standard steel pipe pile is installed on the pile frame through the cross pile shoe, and the steel pipe pile is pressed into the soil by the jack and the reaction force of the pile frame.
[0006] Preferably, the landing wheel comprises a roller, a connecting rod and a jack. The jack is used to push the pile frame, and the connecting rod is connected to the jack and used to support the roller, so that the pile frame can move freely.
[0007] Preferably, the automatic hydraulic jack is connected with a pressure gauge, and whether the steel pipe pile reaches the corresponding soil layer is judged by the reading of the pressure gauge.
[0008] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0009] 1. The utility model provides a downward pressure for the pile driver through the movable pulley and the concrete counterweight, and cooperates with the jack to press the steel pipe pile into the soil layer. After the stroke of the jack ends, the position of the support rod is adjusted, and the jack is used to press down continuously until the steel pipe pile is pressed to the corresponding elevation.
[0010] 2. The utility model can move freely through the roller and retract the wheels when driving piles.
[0011] 3. The utility model drives the pile first and then constructs the bearing platform. The construction quality of the pile foundation and the bearing platform is easy to control, and solves the problem that the traditional steel pipe anchor static pressure pile constructs the bearing platform first, and the reserved pile foundation holes on the bearing platform are large, which affects the construction quality of the bearing platform.
[0012] 4. When encountering the situation of adding new columns, the utility model can drive the piles first and then make the bearing platform and columns, and can optimize the number of piles under the columns. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification. Together with the embodiments of the utility model, they are used to explain the utility model, and do not constitute a limitation to the utility model. In the drawings:
[0014] Figure 1 is the force analysis diagram of the pulley block;
[0015] Figure 2 is the large-scale drawing of the pile shoe;
[0016] Figure 3 is the large-scale drawing of pile splicing;
[0017] Figure 4 is the front view of the pile driver;
[0018] Figure 5 is the three-dimensional view of the counterweight frame
[0019] Figure 6 is the three-dimensional view of the counterweight bracket;
[0020] Figure 7 is the three-dimensional view of the pile frame.
[0021] In the figure: 1. Counterweight frame; 2. Pile frame; 101. Counterweight; 102. Pulley block; 103. Steel frame; 104. Pulley track; 105. Counterweight bracket; 201. Automatic hydraulic jack; 202. Electric hoist; 203. Steel pipe pile; 204. Lifting wheel; 205. Wire rope tension regulator; 206. Scale rail; 207. Section steel support rod. Specific implementation mode
[0022] The technical solution of the present utility model will be described in detail below with reference to the accompanying drawings, but the protection scope of the present utility model is not limited to the embodiments.
[0023] Refer to Figures 1 to 7 , a hydraulic reaction force system under a limited space of the present utility model comprises a counterweight frame 1, a counterweight 101, a pile frame 2, an automatic hydraulic jack 201, a pulley block 102, an electric hoist 202, a steel pipe pile 203 and a lifting wheel 204; the counterweight frame 1 comprises a counterweight 101, a pulley block 102, a steel frame 103 and a pulley track 104; the counterweight 101 is 36 cube iron pieces, the single piece size of the iron piece is 800*800*300, the weight is about 1.5t, and the total counterweight is 54t; when the equipment is assembled, an electric trolley is used to push the counterweight into the counterweight frame, and when the equipment is disassembled, it is taken out again. The pulley block 102 is fixed to the steel frame 103, and the counterweight frame 1 can provide a pressure of 270t for the pile driver through the pulley block 102, and the steel frame 103 is a frame made of section steel. The pulley track 104 is a combination of a track and a pulley, which can ensure the free sliding of the counterweight bracket 105 and the steel frame.
[0024] The pile frame 2 includes a frame body, an automatic hydraulic jack 201, an electric hoist 202, a steel pipe pile 203, a lifting wheel 204, a wire rope tension adjuster 205, a scale rail 206, and a profiled steel support rod 207. The frame body is composed of profiled steel. The automatic hydraulic jack 201 is connected to the profiled steel support rod 207. The steel pipe pile is pushed into the soil layer through the automatic hydraulic jack. The automatic hydraulic jack is connected to a pressure gauge, and whether the steel pipe pile reaches the corresponding soil layer is judged by the reading of the pressure gauge. The profiled steel support rod is sleeved on the scale rail. A movable flap and a spring are connected to the support rod. When the support rod slides downward, the flap can bounce up and the support rod slides downward freely. When pressing the pile, the upward thrust jams the flap and the scale rail to prevent the support rod from moving upward, thereby providing a downward pressure for the pile driver. After the pile pressing is completed, the spring flap is pulled to bounce up and the support rod can slide upward freely. The upper part of the electric hoist 202 is fixed on the pile frame, and the lower part is fixed to the profiled steel support rod through a wire rope. The electric hoist can adjust the up and down sliding distance of the support rod. The wire rope tension adjuster 205 can adjust the tension of the wire rope on the pulley block by rotating the gear to ensure sufficient pulling force. The scale rail 206 is fixed on the pile frame and is of a toothed structure, serving as the sliding track of the profiled steel support rod. The first section of the standard steel pipe pile of the steel pipe pile is welded with a cross pile shoe. The standard steel pipe pile is installed on the pile frame, and the steel pipe pile is pressed into the soil by the reaction pressure of the jack and the pile frame. The top of the pile is exposed above the soil surface. The lower section of the pile and the upper section of the pile are welded with a full groove weld. After the weld cools, it is pressed into the soil by the jack again. This is repeated until the designed elevation is reached.
[0025] The lifting wheel 204 includes a roller, a connecting rod, profiled steel, a jack, etc. When the pile frame 2 needs to move, it is pushed by the jack, and the connecting rod connected to the jack supports the roller, and the pile frame 2 can move freely. When the pile frame is positioned, the jack retracts, and the connecting rod pulls the roller back.
[0026] Overall working process:
[0027] Small excavator site leveling → Pile position measurement → Pile frame positioning → Counterweight frame positioning → Counterweight installation → Connection between the counterweight frame wire rope and the pile frame wire rope → Tighten the wire rope → Steel pipe pile positioning → Profiled steel support rod positioning → Pile pressing → Pile splicing → Continue pile pressing until the designed depth is reached → Loosen the wire rope → Lower the lifting wheel → Pile driver displacement → Construction of the next pile foundation → Binder of the bearing platform steel bars → Formwork erection → Pouring of the bearing platform concrete
[0028] 1. Measure and set out the lines, and locate the pile positions according to the pile layout drawing.
[0029] 2. Chisel off the original ground concrete, steel bars and other obstacles, level the ground, lay crushed stones under the machine position, position the pile driver and level it. The pile adopts a steel pipe pile, and the characteristic value of the single-pile compressive strength design is 500 KN, and the ultimate compressive strength design value is 1000 KN.
[0030] 3. Position the counterweight frame, transport the precast concrete blocks into the counterweight frame with a forklift, tighten the wire rope, and provide downward pressure through the counterweight. The weight of the counterweight is 54T, and the pressure provided can be amplified to 270T through the pulley block. See the force analysis diagram of the pulley block in Figure 3 which can meet the construction requirements of steel pipe piles
[0031] 4. Weld a cross-shaped pile shoe to the first standard steel pipe pile (see Figure 2 ), install the standard steel pipe pile on the pile frame, and use a jack to press the steel pipe pile into the soil against the pile frame. The top of the pile is exposed above the soil surface. The lower section of the pile and the upper section of the pile are welded with full penetration at the bevel (see the pile connection in Figure 3 ). After the weld cools, use a jack to press it into the soil again. Repeat this process until it is pressed to the designed elevation.
[0032] As described above, although the present utility model has been shown and described with reference to specific preferred embodiments, it should not be construed as a limitation to the present utility model itself. Various changes can be made in its form and details without departing from the spirit and scope of the present utility model defined by the appended claims.
Claims
1. A hydraulic reaction force system under limited space, characterized in that: It includes a counterweight frame and a pile frame. The counterweight frame includes a counterweight, a pulley block, a steel frame, a pulley track, and a counterweight bracket. The counterweight is located within the counterweight frame. The pulley block and the steel frame are fixedly connected. The pulley track is a combination of a track and pulleys, ensuring the free sliding of the counterweight bracket and the steel frame. The pile frame includes a frame body, an automatic hydraulic jack, an electric hoist, a steel pipe pile, a lifting wheel, a wire rope tension adjuster, a scale rail, and a profiled steel support rod. The automatic hydraulic jack is connected to the profiled steel support rod, and the profiled steel support rod is sleeved on the scale rail. The upper part of the electric hoist is fixed to the pile frame, and the lower part is fixed to the profiled steel support rod through a wire rope. The wire rope tension adjuster adjusts the tension of the wire rope on the pulley block by rotating a gear. The scale rail is fixed to the pile frame and serves as the sliding track for the profiled steel support rod.
2. The hydraulic reaction force system under a confined space according to claim 1, wherein: A cross pile shoe is welded to the first standard steel pipe pile of the steel pipe pile. The standard steel pipe pile is installed on the pile frame through the cross pile shoe, and the steel pipe pile is pressed into the soil by the jack and the reaction force of the pile frame.
3. The hydraulic reaction force system in a confined space according to claim 2, wherein: The lifting wheel includes a roller, a connecting rod, and a jack. The jack is used to push the pile frame, and the connecting rod is connected to the jack and is used to support the roller, enabling the pile frame to move freely.
4. The hydraulic reaction force system in a confined space according to claim 3, characterized in that: The automatic hydraulic jack is connected to a pressure gauge, and it is determined whether the steel pipe pile reaches the corresponding soil layer by reading the pressure gauge.