A rebar spacing adjustment and fixing device for underground structure construction
By using components such as slots, movable columns, and rotating plates, the precise locking of rebar spacing and the fixing of different angles are achieved, solving the problem that existing devices cannot lock the length and fix the angle, thus improving the stability and safety of underground structure construction.
Patent Information
- Application Number
- CN202522485737.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-24
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-11-24
AI Technical Summary
Existing rebar spacing adjustment devices cannot lock the length during construction, resulting in changes in rebar spacing, which affects the confinement effect of concrete and the structural bearing capacity. Furthermore, they cannot fix rebars at different angles, leading to construction mechanical properties that do not meet design expectations and reducing structural safety.
By employing components such as slots, movable columns, rotating plates, clamping mechanisms, and limiting columns, the system achieves precise locking of rebar spacing and fixation at different angles. The rebar spacing is precisely adjusted and locked using structures such as snap-fit blocks, pointers, knobs, and threaded rods, while different angles are fixed using structures such as limiting grooves, slots, pull columns, and springs.
To ensure that the spacing of the reinforcing bars remains stable during construction, meet design requirements, improve the mechanical performance and safety of the structure, and adapt to diverse engineering needs.
Smart Images
Figure CN224943483U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fixing device technology, specifically to a steel bar spacing adjustment fixing device for underground structure construction. Background Technology
[0002] In underground structure construction, such as building basements, underground parking lots, and tunnels, the design drawings have strict requirements on the spacing of the reinforcing bars. This device can precisely adjust the distance between the reinforcing bars according to the design requirements, ensuring that each reinforcing bar is placed in the specified position, so that the mechanical properties of the underground structure meet the design standards.
[0003] The existing technology has the following problems: Existing devices cannot lock the adjusted length during use. During construction, operations such as concrete pouring generate vibrations. If the adjusted rebar spacing cannot be locked, the vibrations may cause moving parts to shift, altering the rebar spacing and severely affecting the rebar's restraining effect on the concrete and the structure's load-bearing capacity. Furthermore, existing devices cannot fix rebars at different angles. If the device cannot fix rebars at different angles, construction cannot accurately achieve the design scheme, resulting in the actual mechanical performance of the structure not matching the design expectations, reducing structural safety, and making it difficult for construction technology to meet increasingly diverse engineering needs. Utility Model Content
[0004] The main purpose of this utility model is to provide a rebar spacing adjustment and fixing device for underground structure construction, which can effectively solve the problem.
[0005] To achieve the above objectives, the technical solution adopted in this utility model is as follows: A rebar spacing adjustment and fixing device for underground structure construction includes a main body, a support plate fixedly connected to the upper side of the main body, a plurality of slots through the front side of the support plate, a scale plate fixedly connected to the upper side of the main body, movable columns slidably connected to both the left and right sides of the main body, a rotating plate rotatably connected to the upper side of the movable column, a limit column fixedly connected to the lower side of the rotating plate, and a clamping mechanism provided at the end of the rotating plate away from the main body.
[0006] Preferably, the upper side of the main body is provided with two sliding grooves, and the upper side of the movable column is fixedly connected with a snap-fit block, the outer wall of the snap-fit block being slidably connected to the sliding groove.
[0007] Preferably, a pointer is fixedly connected to the front side of the locking block, the lower side of the pointer is movably connected to the scale plate, a fixing post is fixedly connected to the inner surface of the slide groove, the outer wall of the fixing post is slidably connected to the locking block, a knob is rotatably connected to the front side of the locking block, a threaded rod is fixedly connected to the rear side of the knob, and the outer wall of the threaded rod is rotatably connected to the locking block.
[0008] Preferably, the outer wall of the threaded rod is threadedly connected to a threaded sleeve, and the rear end of the threaded sleeve is fixedly connected to a T-shaped retaining post. The outer wall of the T-shaped retaining post is slidably connected to the retaining block, and the outer wall of the T-shaped retaining post is movably connected to the retaining groove.
[0009] Preferably, a limiting groove is formed through the upper side of the movable column, and a plurality of slots are formed on the inner surface of the limiting groove. The outer wall of the limiting column is rotatably connected to the limiting groove.
[0010] Preferably, a pull column is slidably connected to the upper side of the limiting column, a lifting block is fixedly connected to the lower end of the pull column, two rotating plates are rotatably connected to the outer wall of the lifting block, an insertion column is rotatably connected to the other end of the rotating plate, the outer wall of the insertion column is slidably connected to the limiting column, and the outer wall of the insertion column is movably connected to the slot.
[0011] Preferably, a spring is sleeved on the outer wall of the pull column, one end of the spring is fixedly connected to the limiting column, the other end of the spring is fixedly connected to the lifting block, a limiting plate is fixedly connected to the inner surface of the limiting column, and the outer wall of the limiting plate is slidably connected to the insertion column.
[0012] Compared with the prior art, this utility model has the following advantages: This utility model provides a rebar spacing adjustment and fixing device for underground structure construction. Through the cooperation of a slot, a movable column, a rotating plate, a clamping mechanism, a limiting column, a sliding groove, a fixing column, a snap-fit block and a pointer, the adjusted length can be locked. The precise rebar spacing is crucial to the load-bearing capacity and crack resistance of the base plate. The length locking function can ensure that the rebar spacing is always maintained within the design error range, ensuring the stability of the mechanical properties of the structure.
[0013] This utility model provides a rebar spacing adjustment and fixing device for underground structure construction. Through the cooperation of limiting groove, slot, pull column, spring, lifting block, limiting plate, rotating plate and insert column, it can fix rebars at different angles, ensuring that construction personnel can accurately carry out construction according to the design drawings, turning the designer's concept into reality, and making the underground structure have better stability and functionality. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle; Figure 3 This is a schematic diagram of the internal structure of the snap-fit block in this utility model; Figure 4 This is a partial structural diagram of this utility model; Figure 5This is a schematic diagram of the internal structure of the limiting post in this utility model; In the diagram: 1. Main body; 2. Scale plate; 3. Support plate; 4. Slot; 5. Movable column; 6. Rotating plate; 7. Clamping mechanism; 8. Limiting column; 9. Slide groove; 10. Fixed column; 11. Snap-fit block; 12. Pointer; 13. Knob; 14. Threaded rod; 15. Threaded sleeve; 16. T-shaped locking column; 17. Limiting groove; 18. Slot; 19. Pull column; 20. Spring; 21. Lifting block; 22. Limiting plate; 23. Rotating plate; 24. Inserting column. Detailed Implementation
[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following describes this utility model in conjunction with specific implementation methods.
[0016] like Figure 1 As shown, this utility model provides a rebar spacing adjustment and fixing device for underground structure construction, including a main body 1. A support plate 3 is fixedly connected to the upper side of the main body 1. Multiple slots 4 are opened through the front side of the support plate 3. A scale plate 2 is fixedly connected to the upper side of the main body 1. Movable columns 5 are slidably connected through the left and right sides of the main body 1. A rotating plate 6 is rotatably connected to the upper side of the movable column 5. A limit column 8 is fixedly connected to the lower side of the rotating plate 6. A clamping mechanism 7 is provided at the end of the rotating plate 6 away from the main body 1. The main body 1 is the basic support part of the entire device. The support plate 3 is fixed to the upper side of the main body 1, and the multiple slots 4 on its front side are used for... To achieve the length locking function in conjunction with subsequent components, the scale plate 2 is also fixed on the upper side of the main body 1, providing distance indication for the movement of the movable column 5. The movable column 5 runs through the left and right sides of the main body 1 and can slide, its function being to adjust the spacing of the reinforcing bars. The rotating plate 6 is rotatably connected to the upper side of the movable column 5 and can rotate around the movable column 5 as an axis to adapt to the fixing requirements of reinforcing bars at different angles. The limiting column 8 is fixed on the lower side of the rotating plate 6 and cooperates with the limiting groove 17 on the movable column 5 to further assist in fixing the angle of the rotating plate 6. The clamping mechanism 7 is set at the end of the rotating plate 6 away from the main body 1 to clamp the reinforcing bars and achieve the fixing of the reinforcing bars.
[0017] like Figure 2-3As shown, this utility model provides a technical solution: Preferably, two sliding grooves 9 are provided on the upper side of the main body 1, a locking block 11 is fixedly connected to the upper side of the movable column 5, the outer wall of the locking block 11 is slidably connected to the sliding groove 9, a pointer 12 is fixedly connected to the front side of the locking block 11, the lower side of the pointer 12 is movably connected to the scale plate 2, a fixing post 10 is fixedly connected to the inner surface of the sliding groove 9, the outer wall of the fixing post 10 is slidably connected to the locking block 11, and a knob is rotatably connected to the front side of the locking block 11. 13. A threaded rod 14 is fixedly connected to the rear side of the knob 13. The outer wall of the threaded rod 14 is rotatably connected to the snap-fit block 11. A threaded sleeve 15 is threadedly connected to the outer wall of the threaded rod 14. A T-shaped snap-fit post 16 is fixedly connected to the rear end of the threaded sleeve 15. The outer wall of the T-shaped snap-fit post 16 is slidably connected to the snap-fit block 11. The outer wall of the T-shaped snap-fit post 16 is movably connected to the snap-fit groove 4. When it is necessary to adjust the position of the movable post 5 to change the spacing of the reinforcing bars, the snap-fit block 11 on the upper side of the movable post 5 slides in the groove 9 on the upper side of the main body 1. The pointer 12 on the front side of the locking block 11 moves along the scale plate 2. The construction personnel can accurately grasp the moving distance of the movable column 5 by the position of the pointer 12 on the scale plate 2, thereby accurately adjusting the rebar spacing. The fixed column 10 is fixed on the inner surface of the slide groove 9. Its function is to guide and limit the sliding of the locking block 11 and prevent the locking block 11 from falling out of the slide groove 9. When the adjustment is in a suitable position, the knob 13 is turned. The knob 13 drives the threaded rod 14 on the rear side to rotate in the locking block 11. Since the threaded rod 14 is threadedly connected to the threaded sleeve 15, the rotation of the threaded rod 14 causes the threaded sleeve 15 to move along the axial direction of the threaded rod 14. The T-shaped locking post 16 fixed at the rear end of the threaded sleeve 15 moves with the threaded sleeve 15. When the T-shaped locking post 16 moves to be aligned with the locking groove 4 on the front side of the support plate 3, the T-shaped locking post 16 is locked into the locking groove 4, thereby locking the position of the locking block 11 and the movable column 5 connected to it, realizing the locking of the adjustment length, and ensuring that the rebar spacing remains stable in subsequent construction.
[0018] like Figure 4-5As shown, this utility model provides a technical solution: Preferably, a limiting groove 17 is formed through the upper side of the movable column 5, and a plurality of slots 18 are formed on the inner surface of the limiting groove 17. The outer wall of the limiting column 8 is rotatably connected to the limiting groove 17. A pull column 19 is slidably connected through the upper side of the limiting column 8. A lifting block 21 is fixedly connected to the lower end of the pull column 19. Two rotating plates 23 are rotatably connected to the outer wall of the lifting block 21. An insert column 24 is rotatably connected to the other end of the rotating plate 23. The outer wall of the insert column 24 is slidably connected to the limiting column 8 and movably connected to the slots 18. A spring 20 is sleeved on the outer wall of the pull column 19. One end of the spring 20 is fixedly connected to the limiting column 8, and the other end of the spring 20 is fixedly connected to the lifting block 21. A limiting plate 22 is fixedly connected to the inner surface of the limiting column 8. The outer wall of the limiting plate 22 is connected to the insert column. 24. Sliding connection: When it is necessary to fix steel bars at different angles, first pull the pull column 19 upward. The pull column 19 drives the lower lifting block 21 to rise, and the spring 20 is stretched. During the rise of the lifting block 21, the two rotating plates 23 rotatably connected to the outer wall of the lifting block 21 rotate. The insert 24 connected to the other end of the rotating plate 23 slides in the limiting column 8 and moves inward. At this time, the limiting column 8 can be rotated. When the rotating plate 6 rotates to the appropriate angle, the pull column 19 is released. Under the elastic force of the spring 20, the lifting block 21 drives the insert 24 to move downward. The insert 24 inserts into the slot 18, thereby fixing the angle of the rotating plate 6 and realizing the fixing of steel bars at different angles. The limiting plate 22 is fixed on the inner surface of the limiting column 8. Its function is to guide and limit the sliding of the insert 24 to ensure that the insert 24 is accurately inserted into the slot 18.
[0019] The working principle of the steel bar spacing adjustment and fixing device used in the construction of this underground structure will be explained in detail below.
[0020] like Figure 1-5As shown, when the position of the movable column 5 needs to be adjusted to change the rebar spacing, the locking block 11 on the upper side of the movable column 5 slides in the groove 9 on the upper side of the main body 1. The pointer 12 on the front side of the locking block 11 moves along the scale plate 2. The construction personnel can accurately grasp the movement distance of the movable column 5 by the position of the pointer 12 on the scale plate 2, thereby accurately adjusting the rebar spacing. The fixed column 10 is fixed on the inner surface of the groove 9. Its function is to guide and limit the sliding of the locking block 11, preventing the locking block from sliding. 11. After disengaging from the slide groove 9 and adjusting to the appropriate position, rotate the knob 13. The knob 13 drives the threaded rod 14 on the rear side to rotate within the locking block 11. Since the threaded rod 14 is threadedly connected to the threaded sleeve 15, the rotation of the threaded rod 14 causes the threaded sleeve 15 to move along the axial direction of the threaded rod 14. The T-shaped locking post 16 fixed at the rear end of the threaded sleeve 15 moves with the threaded sleeve 15. When the T-shaped locking post 16 moves to align with the locking groove 4 on the front side of the support plate 3, the T-shaped locking post 16 engages with the locking groove 4, thus disengaging from the sliding groove 9. Locking the position of the snap-fit block 11 and the connected movable column 5 locks the adjustable length, ensuring that the spacing of the reinforcing bars remains stable during subsequent construction. When it is necessary to fix reinforcing bars at different angles, first pull the pull column 19 upward. The pull column 19 drives the lower lifting block 21 to rise, and the spring 20 is stretched. During the rise of the lifting block 21, the two rotating plates 23 rotatably connected to the outer wall of the lifting block 21 rotate. The insert 24 connected to the other end of the rotating plate 23 slides in the limiting column 8 and moves inward. At this time, the limiting column 8 can be rotated. When the rotating plate 6 rotates to the appropriate angle, the pull column 19 is released. Under the elastic force of the spring 20, the lifting block 21 drives the insert 24 to move downward. The insert 24 inserts into the slot 18, thereby fixing the angle of the rotating plate 6 and fixing reinforcing bars at different angles. The limiting plate 22 is fixed on the inner surface of the limiting column 8. Its function is to guide and limit the sliding of the insert 24, ensuring that the insert 24 is accurately inserted into the slot 18.
[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A reinforcing bar spacing adjustment fixing device for underground structure construction, characterized by: Includes a main body (1), a support plate (3) is fixedly connected to the upper side of the main body (1), a plurality of slots (4) are opened through the front side of the support plate (3), a scale plate (2) is fixedly connected to the upper side of the main body (1), movable columns (5) are slidably connected through the left and right sides of the main body (1), a rotating plate (6) is rotatably connected to the upper side of the movable column (5), a limit column (8) is fixedly connected to the lower side of the rotating plate (6), and a clamping mechanism (7) is provided at the end of the rotating plate (6) away from the main body (1).
2. The reinforcing bar spacing adjustment fixing device for underground structure construction according to claim 1, characterized in that: Two sliding grooves (9) are provided on the upper side of the main body (1), and a snap-fit block (11) is fixedly connected to the upper side of the movable column (5). The outer wall of the snap-fit block (11) is slidably connected to the sliding groove (9).
3. The reinforcing bar spacing adjustment fixing device for underground structure construction according to claim 2, characterized in that: A pointer (12) is fixedly connected to the front side of the snap-fit block (11). The lower side of the pointer (12) is movably connected to the scale plate (2). A fixing post (10) is fixedly connected to the inner surface of the slide groove (9). The outer wall of the fixing post (10) is slidably connected to the snap-fit block (11). A knob (13) is rotatably connected to the front side of the snap-fit block (11). A threaded rod (14) is fixedly connected to the rear side of the knob (13). The outer wall of the threaded rod (14) is rotatably connected to the snap-fit block (11).
4. The reinforcing bar spacing adjustment fixing device for underground structure construction according to claim 3, characterized in that: The outer wall of the threaded rod (14) is threadedly connected to a threaded sleeve (15), and the rear end of the threaded sleeve (15) is fixedly connected to a T-shaped locking post (16). The outer wall of the T-shaped locking post (16) is slidably connected to the locking block (11), and the outer wall of the T-shaped locking post (16) is movably connected to the locking groove (4).
5. The reinforcing bar spacing adjustment fixing device for underground structure construction according to claim 1, characterized in that: A limiting groove (17) is provided through the upper side of the movable column (5), and a number of slots (18) are provided on the inner surface of the limiting groove (17). The outer wall of the limiting column (8) is rotatably connected to the limiting groove (17).
6. The reinforcing bar spacing adjustment fixture for underground structure construction according to claim 5, characterized in that: A pull post (19) is slidably connected to the upper side of the limiting post (8). A lifting block (21) is fixedly connected to the lower end of the pull post (19). Two rotating plates (23) are rotatably connected to the outer wall of the lifting block (21). An insert post (24) is rotatably connected to the other end of the rotating plate (23). The outer wall of the insert post (24) is slidably connected to the limiting post (8). The outer wall of the insert post (24) is movably connected to the slot (18).
7. The reinforcing bar spacing adjustment fixture for underground structure construction according to claim 6, characterized in that: A spring (20) is fitted on the outer wall of the pull column (19). One end of the spring (20) is fixedly connected to the limiting column (8), and the other end of the spring (20) is fixedly connected to the lifting block (21). A limiting plate (22) is fixedly connected to the inner surface of the limiting column (8), and the outer wall of the limiting plate (22) is slidably connected to the insert column (24).