Elevator foundation pit pouring formwork

Abstract

The utility model relates to elevator foundation pit technical field, concretely disclose a kind of elevator foundation pit pouring form, including concrete cushion, the top of concrete cushion is connected with filler layer, the top of filler layer is connected with foundation pit template, the bottom of foundation pit template is connected with pull rod, the bottom of pull rod is provided with bending section, bending section is embeddedly connected in concrete cushion, the top of concrete cushion is provided with correction device, correction device is pulled through and connected by pull rod. The pull rod in the device can be connected with the foundation pit template and concrete cushion to a certain extent, so that when filling the filler between the foundation pit template and concrete cushion with concrete, it will not cause the foundation pit template to float due to the filling of concrete. When pouring concrete, it is easy to cause the foundation pit template to float due to the filling of concrete.

Description

Technical Field

[0001] This utility model relates to the field of elevator pit technology, and more specifically, to an elevator pit casting template. Background Technology

[0002] When the elevator foundation pit is being poured, it is first poured in a pit on the ground. Then, during the pouring process, a foundation pit is formed on the poured concrete using a foundation pit formwork to facilitate the construction of the elevator.

[0003] However, when filling and pouring existing elevator pits, the filling layer between the elevator pit formwork and the concrete cushion layer is poured. When the concrete material is poured in, it squeezes the elevator pit formwork, causing the elevator pit formwork to float up, thus affecting the final position of the elevator pit formwork. Utility Model Content

[0004] The purpose of this utility model is to provide an elevator pit casting template, which solves the problem that when pouring concrete, the elevator pit template is prone to floating due to the squeezing of the concrete filling during the pouring of the concrete floor between the elevator pit template and the concrete foundation.

[0005] This utility model is achieved through the following technical solution: This utility model provides a formwork for pouring elevator foundation pits, including a concrete cushion layer, a filling layer connected to the top of the concrete cushion layer, a foundation pit formwork connected to the top of the filling layer, a tie rod connected to the bottom of the foundation pit formwork, a bent section provided at the bottom of the tie rod, the bent section being pre-embedded in the concrete cushion layer, and a correction device provided at the top of the concrete cushion layer, the correction device being connected through the tie rod.

[0006] Preferably, the bent section is a protrusion that extends laterally to one side from the bottom of the pull rod.

[0007] Preferably, the top of the tie rod protrudes from the bottom surface of the middle part of the foundation pit template, and the protruding part of the tie rod is connected by a nut.

[0008] Preferably, the pull rod also includes a bonding disc, which is disposed on a disc near the bottom of the pull rod.

[0009] Preferably, the filling layer is the cavity between the concrete cushion layer and the foundation pit formwork, and a steel cage support is provided in the middle of the filling layer, and the foundation pit formwork is connected to the steel cage support in the filling layer.

[0010] Preferably, the correction device includes a correction disc, a conical inclined surface, a shrinkage groove, a displacement block, and a support wheel. The correction disc is set on the top of the concrete pad, the conical inclined surface is set on the top of the correction disc, the shrinkage groove is set on the inner wall of the middle part of the correction disc, the displacement block is connected in the shrinkage groove, and the support wheel is connected in the middle part of the shrinkage groove.

[0011] Preferably, the calibration disc is penetrated by the pull rod, and the inner diameter of the through hole in the middle of the calibration disc is larger than the diameter of the pull rod.

[0012] Preferably, the top of the conical inclined surface is attached to the bottom of the fitting plate, the protruding part of the abutment wheel is on the inner wall of the observation hole of the calibration plate, the protruding part of the abutment wheel is attached to the pull rod, and one end of the displacement block is connected to one end of the shrinkage groove through a spring.

[0013] The technical solution of this utility model has at least the following advantages and beneficial effects: 1. The tie rods installed in this device can connect the foundation pit formwork to the concrete cushion layer, so that when concrete is filled into the filling layer between the foundation pit formwork and the concrete cushion layer, the foundation pit formwork will not be squeezed and floated due to the filling of concrete.

[0014] 2. The device is also equipped with a correction disc that can limit the tie rod, so that when it tilts or bends, there will be a certain resistance and a restoring thrust. This ensures that the tie rod will not lack the restoring force after tilting or bending deformation, which would cause the tie rod to deform and affect the foundation pit formwork. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This utility model Figure 1 A magnified structural diagram of point A in the middle.

[0017] Figure 3 This is a top view cross-sectional structural diagram of the calibration disc of this utility model.

[0018] Reference numerals: 1-Concrete cushion layer, 2-Infill layer, 3-Foundation pit formwork, 301-Tie rod, 302-Bent section, 303-Fitting plate, 4-Correction plate, 401-Conical inclined surface, 402-Shrinkage groove, 403-Displacement block, 404-Abutting wheel. Detailed Implementation

[0019] The following is combined Figures 1 to 3 This utility model will be described in detail.

[0020] An elevator pit casting formwork includes a concrete foundation 1, a filling layer 2 connected to the top of the concrete foundation 1, a pit formwork 3 connected to the top of the filling layer 2, a tie rod 301 connected to the bottom of the pit formwork 3, a bent section 302 provided at the bottom of the tie rod 301, the bent section 302 being pre-embedded in the concrete foundation 1, and a correction device provided at the top of the concrete foundation 1, the correction device being penetrated and connected by the tie rod 301.

[0021] First, a concrete foundation layer 1 is poured into the excavated pit. Then, a steel cage support is built on the concrete foundation layer 1 to form a filling layer 2 for easy pouring. Then, the foundation pit formwork 3 is connected to the steel cage support so that the filling layer 2 can be poured to form the ground with the foundation pit. Then, the elevator is constructed in the foundation pit formed by the foundation pit formwork 3.

[0022] Furthermore, the bent section 302 is a protrusion extending laterally to one side from the bottom of the tie rod 301. The top of the tie rod 301 protrudes from the bottom surface of the middle part of the foundation pit formwork 3, and the protruding part of the tie rod 301 is connected by a nut. The tie rod 301 also includes a bonding disc 303, which is set on a disc near the bottom of the tie rod 301. The filling layer 2 is a cavity between the concrete cushion layer 1 and the foundation pit formwork 3, and a steel cage support is set in the middle of the filling layer 2. The foundation pit formwork 3 is connected to the steel cage support in the filling layer 2.

[0023] Meanwhile, when pouring the filling layer 2, tie rods 301 will be connected to the bottom of the foundation pit formwork 3. The bottom of the tie rods 301 will be embedded in the concrete cushion layer 1 for fixed connection. The embedded part of the tie rods 301 is set as a bent section 302 to make the bottom connection of the tie rods 301 more stable. At the same time, the top of the tie rods 301 will also protrude from the bottom of the middle part of the foundation pit formwork 3 and be connected by nuts. This will prevent the foundation pit formwork 3 from floating due to compression when the filling layer 2 is poured in. The tie rods 301 will be welded to the steel cage support of the filling layer 2 to increase stability.

[0024] Furthermore, the calibration device includes a calibration disc 4, a conical inclined surface 401, a shrinkage groove 402, a displacement block 403, and abutment wheel 404. The calibration disc 4 is set on the top of the concrete pad 1, the conical inclined surface 401 is set on the top of the calibration disc 4, the shrinkage groove 402 is set on the inner wall of the middle part of the calibration disc 4, the displacement block 403 is connected in the shrinkage groove 402, and the abutment wheel 404 is connected in the middle part of the shrinkage groove 402. The calibration disc 4 is penetrated by a pull rod 301, and the inner diameter of the through hole in the middle of the calibration disc 4 is larger than the diameter of the pull rod 301. The top of the conical inclined surface 401 is attached to the bottom of the fitting disc 303. The protruding part of the abutment wheel 404 is on the inner wall of the observation hole of the calibration disc 4, and the protruding part of the abutment wheel 404 is attached to the pull rod 301. One end of the displacement block is connected to one end of the shrinkage groove 402 through a spring.

[0025] When the tie rod 301 is used to fix the foundation pit formwork 3 to prevent it from floating, the bottom of the tie rod 301 will penetrate the correction plate 4. The inner wall of the through hole of the correction plate 4 will contact the side wall of the tie rod 301 through the protruding abutment wheel 404. When the concrete is poured into the filling layer 2, the foundation pit formwork 3 will have a certain displacement force, which will cause the tie rod 301 to tilt and bend. When the tie rod 301 tilts and bends, it will press against part of the abutment wheel 404, forcing the abutment wheel 404 to move along the shrinkage groove 402 through the displacement block 403. At the same time, due to the displacement... The spring at one end of block 403 resets, causing the abutment wheel 404 to generate a reset thrust, which corrects the tilted and bent tie rod 301. At this time, the concrete material has not solidified, allowing the tie rod 301 to reset due to the reset pressure. At the same time, the conical inclined surface 401 on the top of the correction plate 4 will fit with the fitting plate 303 to seal the through hole of the correction plate 4. The inclined surface of the conical inclined surface 401 can also cooperate with the inclination of the fitting plate 303, so that the tie rod 301 can be corrected even when it cannot fit with the steel cage support for welding.

[0026] The following is a detailed implementation process of this utility model: First, a concrete foundation layer 1 is poured into the excavated pit. Then, a steel cage support is erected on the concrete foundation layer 1 to form a filling layer 2 for easy pouring. Next, a pit formwork 3 is connected to the erected steel cage support, allowing the filling layer 2 to be poured to form the ground with the pit. Then, the elevator is constructed in the pit formed by the pit formwork 3. Simultaneously, during the pouring of the filling layer 2, tie rods 301 are connected to the bottom of the pit formwork 3, and the bottom of the tie rods 301 is pre-embedded in the concrete foundation. The tie rod 301 is fixedly connected within layer 1, and the pre-embedded part of the tie rod 301 is set as a bent section 302 to make the bottom connection of the tie rod 301 more stable. At the same time, the top of the tie rod 301 will also protrude from the bottom of the middle part of the foundation pit formwork 3 and be connected by nuts. This prevents the foundation pit formwork 3 from floating due to compression when the filling layer 2 is poured in. The tie rod 301 will also be welded to the steel cage support of the filling layer 2 to increase stability. When the foundation pit formwork 3 is fixed by the tie rod 301 to prevent it from floating, the tie rod 301… The bottom will penetrate through the correction plate 4, and the inner wall of the through hole of the correction plate 4 will contact the side wall of the tie rod 301 through the protruding abutment wheel 404. When the concrete is poured into the filling layer 2, when the formwork 3 of the foundation pit has a certain displacement force, the tie rod 301 will tilt and bend to a certain extent. When the tie rod 301 tilts and bends, it will press against part of the abutment wheel 404, forcing the abutment wheel 404 to move along the shrinkage groove 402 through the displacement block 403. At the same time, because the spring at one end of the displacement block 403 returns to its original position, the abutment wheel 404 will be able to move along the shrinkage groove 402. Wheel 404 generates a restoring thrust to correct the tilted and bent tie rod 301. At this time, the concrete material has not yet solidified, allowing the tie rod 301 to be reset by the restoring pressure. Simultaneously, the conical inclined surface 401 on the top of the correction disc 4 will fit with the bonding disc 303 to seal the through hole of the correction disc 4. The inclined surface of the conical inclined surface 401 can also cooperate with the inclination of the bonding disc 303. This allows the tie rod 301 to be corrected even when it cannot fit and weld with the steel cage support.

Claims

1. A formwork for pouring elevator pits, comprising a concrete cushion layer (1), a filling layer (2) connected to the top of the concrete cushion layer (1), and a pit formwork (3) connected to the top of the filling layer (2), characterized in that, The bottom of the foundation pit template (3) is connected to a tie rod (301), and the bottom of the tie rod (301) is provided with a bent section (302). The bent section (302) is pre-embedded in the concrete cushion layer (1). The top of the concrete cushion layer (1) is provided with a correction device, which is connected through the tie rod (301).

2. The elevator pit casting formwork according to claim 1, characterized in that, The bent section (302) is a protrusion extending laterally to one side from the bottom of the tie rod (301).

3. The elevator pit casting formwork according to claim 1, characterized in that, The top of the tie rod (301) protrudes from the bottom surface of the middle part of the foundation pit template (3), and the protruding part of the tie rod (301) is connected by a nut.

4. The elevator pit casting formwork according to claim 1, characterized in that, The pull rod (301) also includes a bonding disc (303), which is disposed on a disc near the bottom of the pull rod (301).

5. The elevator pit casting formwork according to claim 1, characterized in that, The filling layer (2) is a cavity between the concrete cushion layer (1) and the foundation pit formwork (3), and a steel cage support is provided in the middle of the filling layer (2), and the foundation pit formwork (3) is connected to the steel cage support in the filling layer (2).

6. The elevator pit casting formwork according to claim 1, characterized in that, The correction device includes a correction disc (4), a conical inclined surface (401), a shrinkage groove (402), a displacement block (403), and a support wheel (404). The correction disc (4) is set on the top of the concrete cushion layer (1), the conical inclined surface (401) is set on the top of the correction disc (4), the shrinkage groove (402) is set on the inner wall of the middle part of the correction disc (4), the displacement block (403) is connected in the shrinkage groove (402), and the support wheel (404) is connected in the middle part of the shrinkage groove (402).

7. The elevator pit casting formwork according to claim 6, characterized in that, The calibration disc (4) is penetrated by the pull rod (301), and the inner diameter of the through hole in the middle of the calibration disc (4) is larger than the diameter of the pull rod (301).

8. The elevator pit casting formwork according to claim 6, characterized in that, The top of the conical inclined surface (401) is attached to the bottom of the fitting plate (303), the protruding part of the abutment wheel (404) is on the inner wall of the observation hole of the calibration plate (4), the protruding part of the abutment wheel (404) is attached to the pull rod (301), and one end of the displacement block is connected to one end of the shrinkage groove (402) through a spring.

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