Portable stair side wall outer formwork dismounting operation platform
By designing a portable stair side wall exterior formwork removal working platform, using H-shaped legs and telescopic rod components, the problems of bulkiness and inconvenience in transfer of traditional working brackets are solved, and stable support and efficient disassembly are achieved.
Patent Information
- Application Number
- CN202421812683.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-07-30
AI Technical Summary
When the external formwork of the existing stair side wall is disassembled, the traditional working bracket is bulky and inconvenient to be folded, resulting in difficulty in transferring between the upper and lower stairs and affecting construction efficiency.
A portable stair side wall exterior formwork removal working platform is designed, using H-shaped legs and telescopic rod components, which can lift and unfold the legs through articulation and locking pins, adapt to the height difference of the stair step, and provide stable support and convenient transfer.
It realizes stable support and convenient transfer during the formwork disassembly, reduces the difficulty of disassembly and improves construction efficiency.
Smart Images
Figure CN223177095U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of building construction, in particular to a portable operation platform for disassembling the outer formwork of the side wall of a staircase. Background Art
[0002] Before the concrete of the wall is poured, inner formwork and outer formwork of a certain size are first fabricated, and then they are fixedly connected to the pouring position of the wall through connecting pieces to form a formwork system. Its function is to make the concrete structure and components take shape according to the specified position and geometric dimensions, and maintain their correct positions. At the same time, it bears the self-weight of the building formwork and the external loads acting on it. The main purpose of formwork engineering is to ensure the quality of concrete projects, construction safety, speed up the construction progress, and reduce project costs.
[0003] After the wall is poured, workers need to remove the connecting pieces of the formwork and achieve demoulding by vibrating, and then remove the formwork. Since the formwork has a certain height, workers need to disassemble the operation platform to remove the connecting pieces and vibrate. When removing the outer formwork of the side wall of the staircase, the operation platform cannot be stably placed between the steps of the staircase. Workers will temporarily make an operation support that can adapt to the staircase steps with building wood. However, this kind of operation support is relatively bulky and does not have the function of retracting and reducing its size, which is rather troublesome to transfer and use between upper and lower floors of the staircase, and there is a need for improvement on this basis. Summary of the Utility Model
[0004] In order to solve the above problems, the utility model provides a portable operation platform for disassembling the outer formwork of the side wall of a staircase.
[0005] The technical solution of the utility model is as follows: A portable operation platform for disassembling the outer formwork of the side wall of a staircase, including platform plate A and platform plate B. An ear plate A is provided at the bottom surface of the inner end of platform plate A, and an ear plate B is provided at the bottom surface of the inner end of platform plate B. The ear plate A and the ear plate B are hinged. An H-shaped leg A is hinged to the bottom surface of the outer end of platform plate A. At least two cross bars are arranged side by side between the legs of the H-shaped leg A. A telescopic rod assembly A is connected between the cross bar in the middle of the H-shaped leg A and the inner end of platform plate A. An H-shaped leg B is hinged to the bottom surface of platform plate B. The size of the H-shaped leg B is the same as that of the H-shaped leg A, and the two are symmetrically arranged. A telescopic rod assembly B is connected between the cross bar in the middle of the H-shaped leg B and the inner end of platform plate B; A square cushion block is fixedly connected to the outer end surface of platform plate B, and the square cushion block protrudes from the bottom surface of the platform plate.
[0006] Preferably, the telescopic rod assembly A includes a square tube A and a square tube B. The outer end of the square tube A is hinged to the middle of the cross bar, and the outer end of the square tube B is hinged to the middle of the inner end of the platform plate A. The square tube A is slidably connected inside the square tube B, and pin holes are provided at corresponding positions at the ends of the square tube A and the square tube B. After the ends of the square tube A and the square tube B slide relative to each other, the positions of the two pin holes correspond to each other, and a locking pin is inserted into the pin holes. The structure of the telescopic rod assembly B is the same as that of the telescopic rod assembly A.
[0007] Preferably, the platform plate A includes a plate body and a square frame bracket. The plate body is fixedly connected to the upper surface of the square frame bracket, and the square tube B is hinged to the end of the square rod body in the middle of the square frame bracket.
[0008] Preferably, the square rod body is of a hollow structure, and a long hole matching the sizes of the square tube A and the square tube B is provided at the bottom surface of the square rod body, and the long hole forms a receiving cavity inside the square rod body.
[0009] Preferably, a U-shaped seat A is provided at the bottom surface of the end of the square tube A, and a U-shaped seat B is provided on the upper surface of the middle of the cross bar. The size of the U-shaped seat A is smaller than that of the U-shaped seat B and can be sleeved into the inside of the U-shaped seat B, and the U-shaped seat A and the U-shaped seat B are hinged together as a whole.
[0010] Preferably, limit holes are provided in the middle of the lower ends of the ear plate A and the ear plate B, the positions of the two limit holes can correspond to each other, and a limit pin is connected between the two limit holes.
[0011] Preferably, a hinge support is provided at the bottom surface of the end of the platform plate A, and the H-shaped leg A is hinged in the hinge support through a pin shaft, and a limit baffle is provided at the outer end of the hinge support.
[0012] Preferably, rubber anti-slip pads are provided on the bottom surfaces of the square cushion blocks and the H-shaped legs B, and textures are provided on the bottom surfaces of the rubber anti-slip pads.
[0013] The beneficial technical effects of the present utility model are:
[0014] After the H-shaped leg at one end of the present utility model is retracted, the square cushion at its end serves as a platform support and forms a height difference with the H-shaped leg at the other end. The H-shaped leg supports on the step at a lower position, and the square cushion block supports on the step at a higher position to keep the platform in a horizontal state. It combines the functions of adapting to the staircase steps and retracting to reduce the size, and can be conveniently and quickly transferred and stored between upper and lower floors of the staircase, reducing the difficulty of disassembling the formwork on the side wall of the staircase. Description of the Drawings
[0015] Figure 1 is a schematic structural diagram of the present utility model in the use state;
[0016] Figure 2 is a three-dimensional structural diagram of the present utility model in the use state;
[0017] Figure 3 is Figure 2 the sectional view taken along the A-A direction of
[0018] Figure 4 is the structural schematic diagram of the outrigger in the deployed state of the present utility model;
[0019] Figure 5 is Figure 4 the partial enlarged view of
[0020] Figure 6 is the structural schematic diagram during the retraction process of the present utility model;
[0021] Figure 7 is Figure 6 the partial enlarged view of
[0022] Figure 8 is the structural schematic diagram after the present utility model is completely retracted;
[0023] In the figure, 01. Platform plate A, 11. Ear plate A, 12. H-shaped outrigger A, 13. Telescopic rod assembly A, 02. Platform plate B, 21. Ear plate B, 22. H-shaped outrigger B, 23. Telescopic rod assembly B, 31. Square cushion block, 41. Square pipe A, 42. Square pipe B, 43. Locking pin, 44. U-shaped seat A, 45. U-shaped seat B, 51. Square rod body, 511. Long hole, 61. Limit pin, 62. Limit hole, 71. Hinge support, 72. Limit baffle, 81. Cross bar, 91. Step. Specific embodiments
[0024] Example 1, see the attached drawings of the specification Figure 1-2, A portable operating platform for disassembling the formwork on the outside of the staircase side wall, including platform board A01 and platform board B02. An ear plate A11 is provided on the bottom surface of the inner end of platform board A, and an ear plate B21 is provided on the bottom surface of the inner end of platform board B. The ear plate A and the ear plate B are hinged, so that platform board A01 and platform board B02 can rotate around the hinge point of the two ear plates. An H-shaped leg A12 is hinged to the bottom surface of the outer end of platform board A01. A telescopic rod assembly A13 is connected between the cross bar 81 in the middle of the H-shaped leg A and the inner end of platform board A01. Supported by this telescopic rod assembly A13 between the H-shaped leg A12 and platform board A01, it is in a vertical support state. An H-shaped leg B22 is hinged to the bottom surface of platform board B02. A telescopic rod assembly B23 is connected between the cross bar 81 in the middle of the H-shaped leg B and the inner end of platform board B. Supported by this telescopic rod assembly B between the H-shaped leg B22 and platform board B, it is in a vertical support state; A square cushion block 31 is fixedly connected to the outer end surface of platform board B02. This square cushion block is the support of the platform board and can be understood as the third leg. Rubber anti-slip pads are provided on the bottom surfaces of both the square cushion block 31 and the H-shaped leg B22 to improve the stability of the two when supporting on the surface of the staircase step 91 and avoid the phenomenon of sliding displacement.
[0025] A U-shaped seat A44 is provided on the bottom surface of the end of square tube A41, and a U-shaped seat B45 is provided on the upper surface of the middle of cross bar 81. The U-shaped seat A44 and the U-shaped seat B45 are relatively hinged into one body. By translating the hinge point of the U-shaped seat A and the U-shaped seat B, the rotation angle of the square tube A41 relative to the cross bar 81 is increased, avoiding the phenomenon that the square tube is jammed and cannot rotate in place due to too small a rotation angle.
[0026] When using this operating platform, retract the H-shaped leg at one end. The bottom surface of the square pad at the end of the operating platform protrudes from the bottom surface of the operating platform to form a platform support. There is a height difference between this platform support and the H-shaped leg A12 at the other end. Then place the operating platform at the position of the staircase step 91 where the formwork needs to be disassembled. The H-shaped leg A12 supports on the step at the lower position, and the square cushion block 31 supports on the step 91 at the higher position, making the operating platform in a horizontal state. Then the disassembling worker stands on the platform board to perform the formwork disassembling operation. After one layer is disassembled, it can be retracted and conveniently transferred between floors of the staircase.
[0027] Example 2, see the attached instructions Figure 1-4, on the basis of the first embodiment, the telescopic rod assembly A 13 is designed to include a square tube A 41 and a square tube B 42. The outer end of the square tube A is hinged to the middle of the cross bar 81, and the outer end of the square tube B is hinged to the middle of the inner end of the platform plate A 01. The square tube A 41 is slidably connected inside the square tube B 42, enabling the square tube A and the square tube B to slide relative to each other, and both ends of the square tube can freely rotate through the hinge points. Corresponding pin holes are provided at the corresponding positions of the ends of the square tube A 41 and the square tube B 42, and a locking pin 43 is inserted into the pin holes. The structure of the telescopic rod assembly B 23 is the same as that of the telescopic rod assembly A 13.
[0028] The platform plate A 01 includes a plate body and a square frame bracket. The square frame bracket includes transverse bars and a plurality of longitudinal bars connected side by side between the two transverse bars. The square tube B 42 is hinged to the end of the square rod body 51 in the middle of the square frame bracket. The square rod body is a hollow structure, and a long hole 511 matching the sizes of the square tube A 41 and the square tube B 42 is provided at the bottom surface of the square rod body 51. The long hole, combined with the hollow structure of the square rod body 51, forms a receiving cavity inside the square rod body 51.
[0029] When the H-shaped legs at both ends of the working platform are retracted upward, the locking pins 43 in the middle of the telescopic rod assembly A 13 and the telescopic rod assembly B 23 are pulled out, and then the H-shaped legs are rotated inward. The cross bar 81 in the middle of the H-shaped legs compresses the square tube A 41 inward. The square tube A slides relative to the square tube B 42, and both of them rotate inward synchronously. When the H-shaped legs are in contact with the platform plate and are completely retracted, the square tube B 42 is basically completely slid into the square tube A 41, and the square tube A is inserted into the receiving cavity in the long hole 511 of the square rod body 51.
[0030] Embodiment Three, see the attached drawings in the specification Figure 6-7 , on the basis of the first embodiment, a hinge support 71 is provided at the bottom surface of the end of the platform plate A 01. The H-shaped leg A 12 is hinged inside the hinge support 71. A limit baffle 72 is provided at the outer end of the hinge support. After the H-shaped leg A 12 rotates outward to the vertical state, the limit baffle outside the hinge support blocks the outer side surface of the H-shaped leg A 12. Combined with the inclined support of the telescopic rod assembly, it can ensure that the H-shaped leg A 12 is in a stable vertical state.
[0031] And there are limit holes 62 in the middle of the lower ends of the ear plate A 11 and the ear plate B 21. A limit pin 61 is connected between the two limit holes. When the platform plate A 01 and the platform plate B 02 are unfolded, the limit holes 62 on the two ear plates rotate to the corresponding positions. At this time, inserting the limit pin 61 between the two limit holes can lock the two ear plates, and further lock the two platform plates, ensuring the stability of the two platform plates in the unfolded working state.
Claims
1. A portable operation platform for disassembling the outer formwork on the side of a staircase, characterized in that: It includes platform plate A and platform plate B. At the bottom surface of the inner end of platform plate A, there is an ear plate A, and at the bottom surface of the inner end of platform plate B, there is an ear plate B. The ear plate A and the ear plate B are hinged. At the bottom surface of the outer end of platform plate A, there is a hinged H-shaped leg A. Between the cross bar in the middle of the H-shaped leg A and the inner end of platform plate A, there is a telescopic rod assembly A. At the bottom surface of platform plate B, there is a hinged H-shaped leg B. Between the cross bar in the middle of the H-shaped leg B and the inner end of platform plate B, there is a telescopic rod assembly B; A square cushion block is fixedly connected to the outer end face of the platform plate B.
2. A portable operation platform for disassembling the formwork on the outer side of a staircase wall according to claim 1, characterized in that: The telescopic rod assembly A includes square tube A and square tube B. The outer end of square tube A is hinged to the middle of the cross bar, and the outer end of square tube B is hinged to the middle of the inner end of platform plate A. Square tube A is slidably connected inside square tube B, and at the corresponding positions at the ends of square tube A and square tube B, there are pin holes, and a locking pin is inserted into the pin holes. The structure of the telescopic rod assembly B is the same as that of the telescopic rod assembly A.
3. The portable operation platform for disassembling the outer formwork on the side of the staircase according to claim 2, wherein: The platform plate A includes a plate body and a square frame support. Square tube B is hinged to the end of the square rod body in the middle of the square frame support.
4. A portable formwork removal operation platform for the outer side of a staircase wall according to claim 3, characterized in that: The square rod body is of a hollow structure, and at the bottom surface of the square rod body, there are long holes matching the sizes of square tube A and square tube B.
5. A portable formwork removal working platform for the side wall of a staircase according to claim 2, characterized in that: At the bottom surface of the end of square tube A, there is a U-shaped seat A, and at the upper surface of the middle of the cross bar, there is a U-shaped seat B. The U-shaped seat A and the U-shaped seat B are relatively hinged into one body.
6. The portable formwork removal working platform for the side wall of the staircase according to claim 1, characterized in that: There are limit holes in the middle of the lower ends of the ear plate A and the ear plate B, and a limit pin is connected between the two limit holes.
7. A portable formwork removal working platform for the side wall of a staircase according to claim 1, characterized in that: At the bottom surface of the end of the platform plate A, there is a hinge support, and the H-shaped leg A is hinged inside the hinge support, and a limit baffle is provided at the outer end of the hinge support.
8. A portable formwork removal working platform for the side wall of a staircase according to claim 1, characterized in that: Both the bottom surface of the square cushion block and the bottom surface of the H-shaped leg B are provided with rubber anti-slip pads.