A device for positioning raft thickness
By combining fixed and movable positioning plates and adjusting the spacing using lifting components and drive parts, the problem of inaccurate raft slab thickness caused by the height deviation of the steel stirrups was solved, achieving precise control of raft slab thickness and improving construction quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI CONSTRUCTION GROUP CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-06-12
AI Technical Summary
In existing technologies, the height deviation of the steel stirrups leads to inaccurate control of the raft slab thickness, making it difficult to achieve precise control.
A combination of fixed and movable positioning plates is used, and the spacing is adjusted by a lifting component. Combined with a drive component, the distance between the positioning plates is adjusted to precisely control the thickness of the raft plate.
This enabled precise control of the raft foundation thickness, improving construction quality and accuracy.
Smart Images

Figure CN224351496U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building construction technology, and in particular relates to a device for positioning the thickness of raft slabs. Background Technology
[0002] The existing method for controlling the thickness of the raft slab is to use pre-processed steel stirrups, which are bent and processed on-site. However, the height of steel stirrups produced by different batches or different steelworkers varies greatly, which is not conducive to the precise control of the raft slab thickness. Therefore, there is an urgent need for a device to locate the thickness of the raft slab. Utility Model Content
[0003] The purpose of this invention is to provide a device for positioning the thickness of a raft plate, in order to solve the above-mentioned problems.
[0004] To achieve the above objectives, this utility model provides the following solution:
[0005] A device for positioning the thickness of a raft slab, comprising:
[0006] Fixed positioning plate;
[0007] A movable positioning piece is positioned above the fixed positioning piece via a lifting assembly, the lifting assembly being used to adjust the distance between the fixed positioning piece and the movable positioning piece;
[0008] The drive unit is connected to the lifting assembly via a transmission.
[0009] Optionally, the lifting assembly includes:
[0010] The screw is rotatably connected to the fixed positioning plate at its bottom end, and the screw is threadedly connected to the movable positioning plate.
[0011] Optionally, one end of the movable positioning piece is fixedly connected to a nut, and the nut is threaded onto the screw.
[0012] Optionally, one end of the fixed positioning piece is fixedly connected to a fixed rotating shaft, and the fixed rotating shaft is rotatably connected to the bottom end of the screw.
[0013] Optionally, the driving unit includes a square driving rod, the bottom end of which is axially connected to the top end of the screw. The top end of the square driving rod is provided with a square hole. The movable end of the electric wrench is inserted into the square hole and radially limited by the square hole. The movable end of the electric wrench drives the square driving rod to rotate, thereby rotating the screw.
[0014] Optionally, the top and bottom of the movable positioning piece are provided with grooves for accommodating reinforcing bars.
[0015] Optionally, the top and bottom of the fixed positioning plate are provided with grooves for accommodating reinforcing bars.
[0016] Optionally, the thickness of both the movable positioning piece and the fixed positioning piece is 5mm.
[0017] Compared with the prior art, the present invention has the following advantages and technical effects:
[0018] In use, by placing the fixed positioning plate on the rubber band at the bottom of the valve plate, and by driving the lifting assembly through the drive unit to adjust the distance between the movable positioning plate and the fixed positioning plate, the rubber band at the top of the valve plate is placed on the movable positioning plate, thereby enabling precise control of the valve plate. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the structure of this utility model;
[0021] Among them, 1. square drive rod; 2. screw; 3. nut; 4. fixed rotating shaft; 5. movable positioning plate; 6. fixed positioning plate. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0024] Reference Figure 1 This utility model discloses a device for positioning the thickness of a raft plate, comprising:
[0025] Fixed positioning plate 6;
[0026] The movable positioning piece 5 is positioned above the fixed positioning piece 6 via a lifting assembly, which is used to adjust the distance between the fixed positioning piece 6 and the movable positioning piece 5.
[0027] The drive unit is connected to the lifting assembly via a transmission.
[0028] In use, by mounting the fixed positioning plate 6 on the rubber band at the bottom of the valve plate, and by driving the lifting assembly through the drive unit to adjust the distance between the movable positioning plate 5 and the fixed positioning plate 6, the rubber band at the top of the valve plate is placed on the movable positioning plate 5, thereby enabling precise control of the valve plate.
[0029] As an optional implementation, the lifting assembly includes:
[0030] The bottom end of the screw 2 is rotatably connected to the fixed positioning plate 6, and the screw 2 is threadedly connected to the movable positioning plate 5.
[0031] As an optional implementation, one end of the movable positioning piece 5 is fixedly connected to a nut 3, which is threaded onto the screw rod 2.
[0032] As an optional implementation, one end of the fixed positioning piece 6 is fixedly connected to a fixed rotating shaft 4, and the fixed rotating shaft 4 is rotatably connected to the bottom end of the screw 2.
[0033] As an optional implementation, the drive unit includes a square drive rod 1, the bottom end of which is axially connected to the top end of the screw 2. The top end of the square drive rod 1 is provided with a square hole. The movable end of the electric wrench is inserted into the square hole and radially limited to fit the square hole. The movable end of the electric wrench drives the square drive rod 1 to rotate, thereby causing the screw 2 to rotate.
[0034] This device includes a positioning plate and a screw 2 with a square drive rod. The positioning plate is connected to the screw 2 by a nut.
[0035] The positioning plates are divided into fixed positioning plates 6 and movable positioning plates 5. The fixed positioning plate 6 is connected to the screw at the end by a fixed rotating shaft 4, and the movable positioning plate 5 is connected to the screw 2 by a nut 3, and moves up and down with the rotation of the screw 2 to achieve distance adjustment.
[0036] The movable positioning piece 5 can be brought closer and separated by using an electric wrench in conjunction with a square drive rod 1 to drive a rotating screw.
[0037] As an optional implementation, the top and bottom of the movable positioning piece 5 are provided with grooves for accommodating the reinforcing bars.
[0038] As an optional implementation, the top and bottom of the fixed positioning piece 6 are provided with grooves for accommodating the reinforcing bars.
[0039] As an optional implementation, both the movable positioning piece 5 and the fixed positioning piece 6 have a thickness of 5mm.
[0040] Both the movable positioning plate 5 and the fixed positioning plate 6 have grooves on the top and bottom to prevent the rebar from shifting. When using them, different grooves are selected according to the spacing of the upper and lower layers of rebar on the raft slab.
[0041] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0042] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.
Claims
1. A device for positioning the thickness of a raft plate, characterized in that, include: Fixed positioning plate (6); The movable positioning piece (5) is positioned above the fixed positioning piece (6) by a lifting assembly, which is used to adjust the distance between the fixed positioning piece (6) and the movable positioning piece (5). The drive unit is connected to the lifting assembly via a transmission.
2. The device for positioning the thickness of a raft plate according to claim 1, characterized in that: The lifting assembly includes: The bottom end of the screw (2) is rotatably connected to the fixed positioning plate (6), and the screw (2) is threadedly connected to the movable positioning plate (5).
3. The device for positioning the thickness of a raft plate according to claim 2, characterized in that: One end of the movable positioning piece (5) is fixedly connected to a nut (3), and the nut (3) is threaded onto the screw (2).
4. The device for positioning the thickness of a raft plate according to claim 2, characterized in that: One end of the fixed positioning piece (6) is fixedly connected to a fixed rotating shaft (4), and the fixed rotating shaft (4) is rotatably connected to the bottom end of the screw (2).
5. The device for positioning the thickness of a raft plate according to claim 2, characterized in that: The driving unit includes a square driving rod (1), the bottom end of which is axially connected to the top end of the screw (2). The top end of the square driving rod (1) is provided with a square hole. The movable end of the electric wrench is inserted into the square hole and radially limited to the square hole. The movable end of the electric wrench drives the square driving rod (1) to rotate, thereby rotating the screw (2).
6. The device for positioning the thickness of a raft plate according to claim 1, characterized in that: The top and bottom of the movable positioning piece (5) are provided with grooves for accommodating reinforcing bars.
7. The device for positioning the thickness of a raft plate according to claim 1, characterized in that: The fixed positioning piece (6) has grooves at the top and bottom for accommodating reinforcing bars.
8. The device for positioning the thickness of a raft plate according to claim 1, characterized in that: The thickness of both the movable positioning piece (5) and the fixed positioning piece (6) is 5mm.