Tunnel inverted arch filling and surface finishing device
By using a tunnel invert filling and finishing device composed of main square steel pipes and secondary square steel pipes, the problem of traditional wooden scrapers being heavy and time-consuming has been solved, achieving efficient flatness control and cost savings.
Patent Information
- Application Number
- CN202423252237.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Traditional short wooden scrapers are cumbersome, time-consuming, labor-intensive, produce poor flatness, are easily damaged, and are costly when used for filling and finishing tunnel inverts.
The finishing device, composed of main square steel pipes and secondary square steel pipes, combined with locking and telescopic mechanisms, utilizes lightweight and high-strength galvanized steel pipes and a reasonable structural design to achieve rapid disassembly and assembly and flatness control.
It improved the flatness of the tunnel invert arch filling, reduced construction costs, facilitated the handling and transportation of the equipment, and reduced the intensity of manual labor.
Smart Images
Figure CN223536365U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of tunnel finishing equipment, and in particular to a tunnel invert arch filling finishing device. Background Technology
[0002] In the traditional construction of high-speed railway tunnels, extremely high standards and quality are required. During the finishing of the invert arch filling, the smoothness of the filling surface is of paramount importance. Previously, the filling surface was typically finished using short wooden scrapers for initial leveling, followed by a secondary finishing process using a grinder and manual labor. However, current short wooden scrapers are bulky, making manual finishing time-consuming and labor-intensive. Furthermore, the limited width of these scrapers makes them susceptible to dragging during finishing, leading to longitudinal sharp edges in the concrete and affecting the smoothness of the filling surface. In addition, the wooden scrapers often deform and break due to insufficient rigidity, requiring custom-made scrapers, which wastes materials and increases costs. Finally, the unreasonable structure of the wooden scrapers makes them prone to twisting and turning during finishing, resulting in sharp edges and bulges on the filling surface, further affecting its smoothness. Utility Model Content
[0003] The purpose of this invention is to address the problems existing in the background technology by proposing a tunnel invert arch filling and finishing device.
[0004] The technical solution of this utility model is as follows: a tunnel invert arch filling and finishing device, including a main square steel pipe, and further including: a pair of secondary square steel pipes, which are movably inserted into the two ends of the main square steel pipe; a locking mechanism that is spirally connected to the two ends of the main square steel pipe for fixing the secondary square steel pipes; and a pair of square sleeves fixedly connected to the upper surface of the main square steel pipe, each of which is provided with a telescopic mechanism for locking the corresponding secondary square steel pipe.
[0005] Optionally, the locking mechanism includes spiral holes at both ends of the main square steel tube, with spiral clamps spirally connected inside each spiral hole. Each of the secondary square steel tubes has a connecting tube fixedly connected to the end of the secondary square steel tube near the main square steel tube, which is inserted into the main square steel tube and the square clamp sleeve. The connecting tube has an elliptical insertion hole for the spiral clamps to be inserted.
[0006] Optionally, the telescopic mechanism includes a protrusion fixedly connected to a square sleeve, a sliding block with an end penetrating through the square sleeve slidably connected inside the protrusion, and a return spring fixedly connected inside the protrusion, with one end of the return spring away from the inner wall of the protrusion fixedly connected to the sliding block.
[0007] Optionally, the end of the sliding block away from the reset spring is provided with a spherical abutment.
[0008] Optionally, a round steel handle is fixedly connected to the top of the pair of square sleeves.
[0009] Optionally, each of the spiral levers is fixedly connected to a knob, and the outer wall of the knob is provided with multiple anti-slip textures distributed in a circumferential array.
[0010] Optionally, the pair of sub-square steel pipes, locking mechanism, square ferrule and telescopic mechanism are all symmetrically arranged at both ends of the main square steel pipe.
[0011] In summary, this application includes at least one of the following beneficial technical effects:
[0012] This invention utilizes the combined structure of a main square steel pipe, secondary square steel pipes, a locking mechanism, and a telescopic mechanism. The main and secondary square steel pipes are made of lightweight, high-strength materials with a rational structural mechanics design, making the arch filling and finishing process convenient and quick, effectively controlling the flatness of the filling, and saving construction costs. Furthermore, the main square steel pipe and the pair of secondary square steel pipes can be quickly assembled and disassembled. This design allows the finishing device to be compressed in length when not in use, facilitating handling and transportation. Attached Figure Description
[0013] Figure 1 A structural schematic diagram of a tunnel invert arch filling and finishing device according to this utility model is provided;
[0014] Figure 2 for Figure 1 A partial diagram of the split structure;
[0015] Figure 3 for Figure 1 A schematic diagram of the storage state structure;
[0016] Figure 4 for Figure 3 Enlarged view of point A in the middle;
[0017] Figure 5 for Figure 4 A schematic diagram of the structure of the central protrusion.
[0018] Reference numerals: 1. Main square steel pipe; 11. Spiral hole; 12. Spiral clamp rod; 13. Knob; 14. Square sleeve; 15. Round steel handle; 2. Secondary square steel pipe; 21. Connecting insert; 22. Oval insertion hole; 3. Protrusion; 31. Sliding block; 32. Return spring; 33. Spherical abutment. Detailed Implementation
[0019] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0020] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.
[0021] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0023] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] Example
[0026] like Figures 1 to 5As shown, this utility model proposes a tunnel invert filling and finishing device, including a main square steel pipe 1, and a pair of secondary square steel pipes 2, which are movably inserted into both ends of the main square steel pipe 1; a locking mechanism screwed to both ends of the main square steel pipe 1 for fixing the secondary square steel pipes 2; and a pair of square clamps 14 fixedly connected to the upper surface of the main square steel pipe 1, which clamp the corresponding connecting tubes 21, thereby fixing the pair of secondary square steel pipes 2 onto the main square steel pipe 1, thus reducing the length of the tunnel invert filling and finishing device. A round steel handle 15 is fixedly connected to the top of the pair of square clamps 14, and each square clamp 14 is equipped with a telescopic mechanism for clamping the corresponding secondary square steel pipe 2. The pair of secondary square steel pipes 2, the locking mechanism, the square clamps 14, and the telescopic mechanism are all symmetrically arranged at both ends of the main square steel pipe 1. The main square steel pipe 1 and the secondary square steel pipes 2 are galvanized square tubes, which are steel pipes with a square cross-section and galvanized surfaces, typically using hot-dip galvanizing or electro-galvanizing processes. The galvanized layer effectively prevents steel pipes from rusting, improves corrosion resistance, and extends service life.
[0027] The concrete used for filling and finishing must have a certain slump; the concrete cannot be too dry, as this will make finishing difficult. When starting to finish, the hand-held tunnel invert arch filling and finishing device is placed on the filling concrete surface, and then the tunnel invert arch filling and finishing device is pulled horizontally from the end of the formwork to the overlap of the previous invert arch filling construction joint.
[0028] Furthermore, the locking mechanism includes spiral holes 11 at both ends of the main square steel tube 1. Each spiral hole 11 is spirally connected to a spiral lever 12, and each spiral lever 12 has a knob 13 fixedly connected to its top. The outer wall of the knob 13 has multiple anti-slip patterns arranged in a circular array. The main function of the anti-slip patterns is to increase friction, allowing the user to grip the rotating knob 13 more firmly during operation, preventing slippage and improving operational accuracy and safety. Especially in humid or oily environments, the anti-slip patterns significantly enhance the user experience and safety. Each of the secondary square steel pipes 2 has a connecting tube 21 fixedly connected to one end of the secondary square steel pipe 1 near the main square steel pipe 1. The connecting tube 21 has an elliptical insertion hole 22 for the spiral clamp rod 12 to be inserted. When the spiral clamp rod 12 is inserted, the elliptical insertion hole 22 will drive the connecting tube 21 and the secondary square steel pipe 2 to move towards the main square steel pipe 1, thereby making the connection between the main square steel pipe 1 and the pair of secondary square steel pipes 2 tight.
[0029] Furthermore, the telescopic mechanism includes a protrusion 3 fixedly connected to the square sleeve 14. The protrusion 3 engages within the elliptical insertion hole 22, preventing the connecting tube 21 from dislodging from the square sleeve 14. A sliding block 31, with its end penetrating the square sleeve 14, is slidably connected inside the protrusion 3. A spherical abutment 33 is provided at the end of the sliding block 31 away from the return spring 32. The spherical abutment 33 causes the sliding block 31 to rotate and retract into the protrusion 3 after the square sleeve 14 is engaged. A return spring 32 is fixedly connected inside the protrusion 3. The return spring 32 causes the sliding block 31 to automatically insert the spherical abutment 33 into the elliptical insertion hole 22. The end of the return spring 32 away from the inner wall of the protrusion 3 is fixedly connected to the sliding block 31.
[0030] In this embodiment, when a tunnel invert filling and finishing device is required, such as Figure 3 As shown, first remove the secondary square steel tube 2 from each square sleeve 14. Simply press the corresponding spherical abutment 33 towards the protrusion 3. The spherical abutment 33 will cause the sliding block 31 to retract into the protrusion 3. At this time, pull out the secondary square steel tube 2, and the connecting tube 21 at the end of the secondary square steel tube 2 will be dislodged from the square sleeve 14. Then, insert the connecting tube 21 at the end of the secondary square steel tube 2 into the end of the main square steel tube 1 in sequence. At the same time, rotate the knob 13. The knob 13 will drive the spiral clamp 12 to rotate. Since the spiral clamp 12 is spirally connected to the spiral hole 11, the end of the spiral clamp 12 will be inserted into the elliptical insertion hole 22 until the end of the spiral clamp 12 passes through a pair of elliptical insertion holes 22 and abuts against the inner wall of the main square steel tube 1. At this time, the installation of a pair of secondary square steel tubes 2 at the end of the main square steel tube 1 is completed. When the tunnel invert filling and finishing device is finished, simply reinstall the pair of secondary square steel pipes 2 into the square sleeves 14 on the main square steel pipe 1. Then, insert the connecting tube 21 at the end of the secondary square steel pipe 2 into the square sleeves 14. At this time, the spherical abutment 33 at the end of the sliding block 31 is pressed against the end of the square sleeve 14, causing the spherical abutment 33 to drive the sliding block 31 back into the protrusion 3. Finally, when the connecting tube 21 moves the elliptical insertion hole 22 to coincide with the spherical abutment 33, the elastic thrust of the return spring 32 inside the protrusion 3 causes the return spring 32 to push the sliding block 31 and drive the spherical abutment 33 into the elliptical insertion hole 22, thus completing the storage of the pair of secondary square steel pipes 2.
[0031] The preferred embodiments of this utility model described above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A tunnel invert arch filling and finishing device, comprising a main square steel pipe (1), characterized in that, Also includes: A pair of secondary square steel pipes (2) are movably inserted into both ends of the main square steel pipe (1); A locking mechanism is spirally connected to both ends of the main square steel pipe (1) to fix the secondary square steel pipe (2); A pair of square sleeves (14) are fixedly connected to the upper surface of the main square steel pipe (1). Each square sleeve (14) is provided with a telescopic mechanism to lock the corresponding secondary square steel pipe (2).
2. The tunnel invert arch filling and finishing device according to claim 1, characterized in that, The locking mechanism includes spiral holes (11) at both ends of the main square steel pipe (1). The spiral holes (11) are all spirally connected with spiral clamps (12). The secondary square steel pipe (2) is fixedly connected to a connecting tube (21) that is inserted into the main square steel pipe (1) and the square clamp (14). The connecting tube (21) is provided with an elliptical insertion hole (22) for the spiral clamps (12) to be inserted.
3. The tunnel invert arch filling and finishing device according to claim 1, characterized in that, The telescopic mechanism includes a protrusion (3) fixedly connected to a square sleeve (14), a sliding block (31) with an end penetrating through the square sleeve (14) is slidably connected inside the protrusion (3), and a return spring (32) is fixedly connected inside the protrusion (3), with one end of the return spring (32) away from the inner wall of the protrusion (3) fixedly connected to the sliding block (31).
4. A tunnel invert arch filling and finishing device according to claim 3, characterized in that, The sliding block (31) has a spherical abutment (33) at the end away from the return spring (32).
5. A tunnel invert arch filling and finishing device according to claim 1, characterized in that, A round steel handle (15) is fixedly connected to the top of the pair of square sleeves (14).
6. A tunnel invert arch filling and finishing device according to claim 2, characterized in that, Each of the spiral levers (12) has a knob (13) fixedly connected to its top end. The outer wall of the knob (13) is provided with multiple anti-slip textures arranged in a circular array.
7. A tunnel invert arch filling and finishing device according to claim 1, characterized in that, The pair of secondary square steel pipes (2), locking mechanism, square sleeve (14) and telescopic mechanism are all symmetrically arranged at both ends of the main square steel pipe (1).