Template for tunnel inverted arch construction
By setting up movement, positioning and fabric mechanisms on the tunnel arch construction formwork, the problems of uneven diffusion of concrete and inconvenient movement of formwork during tunnel arch construction are solved, and efficient and convenient construction results are achieved.
Patent Information
- Application Number
- CN202422616026.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-29
AI Technical Summary
When pouring concrete, the existing tunnel arch construction formwork has a large window spacing, resulting in waste of concrete flowing into the groove, small vibration impact leads to uneven diffusion of concrete, inconvenient form positioning and movement, which affects construction efficiency and convenience.
A formwork for tunnel arch construction is designed, equipped with a moving mechanism, a positioning mechanism and a fabric structure, including adjusting screw cylinder, universal wheel, positioning groove, positioning hole, pin hole, filler hole and other structures to achieve convenient movement, rapid positioning and uniform fabric of the template.
It improves the casting effect and construction efficiency of the formwork, ensures uniform diffusion of concrete, simplifies the positioning and movement of the formwork, and improves the construction convenience.
Smart Images
Figure CN223177545U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tunnel invert construction, in particular to a formwork for tunnel invert construction. Background Technique
[0002] The invert is a reverse arch structure arranged at the bottom of the tunnel to improve the stress condition of the upper support structure. It is one of the main components of the tunnel structure. When pouring the invert, the steel bars need to be laid on the ground first, and an arc-shaped formwork is laid above the steel bars for cement pouring. After the cement solidifies, the formwork is replaced for pouring the remaining cement.
[0003] When pouring concrete at the bottom of the tunnel, it needs to be poured through the windows on the bottom invert formwork. The existing window spacing on the invert formwork is large and there are grooves inside the windows. When feeding, part of the concrete flows into the grooves, resulting in waste. At the same time, due to the large window spacing, the middle part between the windows is less affected by vibration during vibration after feeding, so that the concrete cannot be evenly diffused, ultimately affecting the pouring effect of the tunnel bottom; when using the construction formwork, generally multiple construction formworks are aligned and laid, but the alignment and positioning of each construction formwork are relatively cumbersome, thus reducing the working efficiency when laying the construction formwork; when laying the tunnel invert, it is not easy to push the construction formwork to move it to different positions for laying, thus affecting the convenience when using the construction formwork. Content of the Utility Model
[0004] The purpose of the utility model is to provide a formwork for tunnel invert construction to solve the problems of poor pouring effect at the bottom of the tunnel, low working efficiency, and low convenience when using the construction formwork as mentioned in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A formwork for tunnel invert construction, including an invert formwork. Moving mechanisms are arranged on both sides of the surface of the invert formwork. The moving mechanism consists of a moving component and a receiving groove. A positioning mechanism is arranged on the surface of the invert formwork. The inside of the positioning mechanism includes a positioning groove, a positioning post, a positioning hole, and a positioning piece. Cloth-feeding mechanisms are arranged on the surface of the invert formwork. The inside of the cloth-feeding mechanism includes a pin hole, a filler hole, a baffle, and a pin rod.
[0006] Preferably, receiving grooves are opened at the corner positions of the surface of the invert formwork, and a moving component is arranged on one side of the receiving groove.
[0007] Preferably, an adjusting screw barrel, a universal wheel, and a fixing screw are arranged inside the moving component. Fixing screws are fixed on both sides of the surface of the invert formwork through brackets. An adjusting screw barrel is sleeved on the surface of the fixing screw, and the adjusting screw barrel is in threaded cooperation with the fixing screw.
[0008] Preferably, universal wheels are arranged inside the receiving groove, and one end of each universal wheel is rotatably connected to the bottom of the adjusting screw cylinder.
[0009] Preferably, positioning pieces are fixed at both ends of one side of the invert formwork, and positioning grooves are formed at both ends of the other side of the invert formwork. The positioning grooves and the positioning pieces are inserted and matched with each other.
[0010] Preferably, positioning holes are formed on the surface of the positioning piece, and positioning columns are fixed on one side of the invert formwork. The positioning columns and the positioning holes are sleeved and matched with each other.
[0011] Preferably, equidistant filler holes are formed on the surface of the invert formwork, and baffles are rotatably connected to the surface of the invert formwork. The baffles cover the surfaces of the filler holes.
[0012] Preferably, a pin hole is formed at one end of the baffle, and a pin rod is rotatably connected to the surface of the invert formwork. When the pin rod is parallel to the pin hole, the pin rod is located inside the pin hole. When the pin rod rotates to intersect with the pin hole, the surface of the pin rod is closely attached to the surface of the baffle to fix the baffle.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: The formwork for tunnel invert construction not only improves the pouring effect during the use of the construction formwork, improves the working efficiency during the positioning and laying of the construction formwork, but also improves the convenience during the use of the construction formwork;
[0014] 1. By providing a cloth feeding mechanism, when pouring concrete, the pin rod can be rotated to make the pin rod rotate to the inside of the pin hole, and then the baffle is rotated to open the baffle, so that the filler hole is exposed to the air, which is convenient for the staff to pour concrete to the bottom of the invert formwork through the filler hole. At the same time, after pouring, the vibrating rod is inserted into the filler hole to vibrate and spread the concrete, so that the concrete is evenly spread under the invert formwork. At the same time, under normal conditions, the filler hole is blocked by the baffle to prevent the un-poured filler hole from affecting the spreading amount of the concrete during the concrete pouring process, so as to realize the uniform cloth feeding function of the construction formwork, thereby improving the pouring effect during the use of the construction formwork;
[0015] 2. By providing a positioning mechanism, the invert formwork is laid on the bottom of the tunnel, and then another invert formwork is hoisted to one side of the invert formwork, so that the positioning hole is sleeved on the surface of the positioning column, and then the invert formwork is put down to make the positioning piece clamped into the positioning groove, quickly positioning and aligning the two invert formworks, so as to realize the function of quickly positioning and laying the construction formwork, thereby improving the working efficiency during the positioning and laying of the construction formwork;
[0016] 3. By providing a moving mechanism, when it is necessary to move the invert formwork, the adjusting screw cylinder can be rotated. Under the thread fit of the adjusting screw cylinder and the fixed screw rod, the universal wheel is driven to move, so that the universal wheel extends out of the receiving groove and contacts the inner wall of the tunnel. Subsequently, the invert formwork can be pushed, and the invert formwork can be moved with the assistance of the universal wheel, so as to realize the function that the formwork for construction is convenient to move, thereby improving the convenience degree when the formwork for construction is used. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a three-dimensional external structure schematic diagram of the present utility model;
[0018] Figure 2 is a top view structure schematic diagram of the present utility model;
[0019] Figure 3 is an enlarged structure schematic diagram of the moving mechanism of the present utility model;
[0020] Figure 4 is an enlarged structure schematic diagram of the positioning mechanism of the present utility model.
[0021] In the figure: 1, invert formwork; 2, moving mechanism; 21, moving component; 211, adjusting screw cylinder; 212, universal wheel; 213, fixed screw rod; 22, receiving groove; 3, positioning mechanism; 31, positioning groove; 32, positioning column; 33, positioning hole; 34, positioning piece; 4, cloth feeding mechanism; 41, pin hole; 42, filling hole; 43, baffle; 44, pin rod. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. In addition, the terms "first", "second", "third", "upper, lower, left, right", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. At the same time, in the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0023] The structure of a formwork for tunnel invert construction provided by the present utility model is as Figure 1 and Figure 3As shown in the figure, it includes an invert formwork 1. Moving mechanisms 2 are arranged on both sides of the surface of the invert formwork 1. The moving mechanism 2 is composed of a moving component 21 and a receiving groove 22. Receiving grooves 22 are provided at the corner positions of the surface of the invert formwork 1. A moving component 21 is arranged on one side of the receiving groove 22. An adjusting screw barrel 211, a universal wheel 212 and a fixing screw 213 are arranged inside the moving component 21. Fixing screws 213 are fixed to both sides of the surface of the invert formwork 1 through brackets. An adjusting screw barrel 211 is sleeved on the surface of the fixing screw 213. The adjusting screw barrel 211 and the fixing screw 213 are in threaded cooperation with each other. A universal wheel 212 is arranged inside the receiving groove 22. One end of the universal wheel 212 is rotatably connected to the bottom of the adjusting screw barrel 211.
[0024] During use, when it is necessary to move the invert formwork 1, the adjusting screw barrel 211 can be rotated. Under the threaded cooperation of the adjusting screw barrel 211 and the fixing screw 213, the universal wheel 212 is driven to move, so that the universal wheel 212 extends out of the receiving groove 22 and contacts the inner wall of the tunnel. Subsequently, the invert formwork 1 can be pushed, and the invert formwork 1 can be moved with the assistance of the universal wheel 212 to realize the function of facilitating the movement of the formwork for construction.
[0025] Furthermore, as Figure 4 shown in the figure, a positioning mechanism 3 is arranged on the surface of the invert formwork 1. The positioning mechanism 3 includes a positioning groove 31, a positioning column 32, a positioning hole 33 and a positioning piece 34 inside. Positioning pieces 34 are fixed to both ends of one side of the invert formwork 1. Positioning grooves 31 are provided at both ends of the other side of the invert formwork 1. The positioning grooves 31 and the positioning pieces 34 are inserted and matched with each other. Positioning holes 33 are provided on the surface of the positioning pieces 34. Positioning columns 32 are fixed to one side of the invert formwork 1. The positioning columns 32 and the positioning holes 33 are sleeved and matched with each other.
[0026] During use, the invert formwork 1 is laid on the bottom of the tunnel. Subsequently, another invert formwork 1 is hoisted to one side of the invert formwork 1, so that the positioning hole 33 is sleeved on the surface of the positioning column 32. Then the invert formwork 1 is lowered, and the positioning piece 34 is clamped inside the positioning groove 31, quickly positioning and aligning the two invert formworks 1 to realize the function of quickly positioning and laying the formwork for construction.
[0027] Furthermore, as Figure 2As shown in the figure, a cloth distributing mechanism 4 is provided on the surface of the inverted arch formwork 1. The inside of the cloth distributing mechanism 4 includes a pin hole 41, a filler hole 42, a baffle 43 and a pin 44. The filler holes 42 are arranged at equal intervals on the surface of the inverted arch formwork 1. The baffle 43 is rotatably connected to the surface of the inverted arch formwork 1. The baffle 43 covers the surface of the filler hole 42. A pin hole 41 is provided at one end of the baffle 43. The pin 44 is rotatably connected to the surface of the inverted arch formwork 1. When the pin 44 is parallel to the pin hole 41, the pin 44 is located inside the pin hole 41. When the pin 44 rotates to intersect with the pin hole 41, the surface of the pin 44 is in close contact with the surface of the baffle 43 to fix the baffle 43.
[0028] During use, when pouring concrete, the pin 44 can be rotated to make the pin 44 rotate inside the pin hole 41. Then the baffle 43 is rotated to open the baffle 43, so that the filler hole 42 is exposed to the air, which is convenient for the staff to pour concrete to the bottom of the inverted arch formwork 1 through the filler hole 42. At the same time, after pouring, the vibrating rod is inserted into the filler hole 42 to vibrate and spread the concrete, so that the concrete is evenly spread under the inverted arch formwork 1. At the same time, under normal conditions, the filler hole 42 is blocked by the baffle 43 to prevent the un-poured filler hole 42 from affecting the spreading amount of the concrete during the pouring process of the concrete, so as to realize the uniform cloth distributing function of the formwork for construction.
[0029] Working principle: During use, first lay the inverted arch formwork 1 at the bottom of the tunnel. Then hoist another inverted arch formwork 1 to one side of the inverted arch formwork 1, so that the positioning hole 33 is sleeved on the surface of the positioning column 32. Then put down the inverted arch formwork 1 to make the positioning piece 34 snap into the positioning groove 31 to quickly position and align the two inverted arch formworks 1, so as to realize the function of quickly positioning and laying the formwork for construction, thereby improving the working efficiency of positioning and laying the formwork for construction.
[0030] During pouring of concrete, the pin 44 can be rotated to make the pin 44 rotate inside the pin hole 41. Then the baffle 43 is rotated to open the baffle 43, so that the filler hole 42 is exposed to the air, which is convenient for the staff to pour concrete to the bottom of the inverted arch formwork 1 through the filler hole 42. At the same time, after pouring, the vibrating rod is inserted into the filler hole 42 to vibrate and spread the concrete, so that the concrete is evenly spread under the inverted arch formwork 1. At the same time, under normal conditions, the filler hole 42 is blocked by the baffle 43 to prevent the un-poured filler hole 42 from affecting the spreading amount of the concrete during the pouring process of the concrete, so as to realize the uniform cloth distributing function of the formwork for construction, thereby improving the pouring effect during the use of the formwork for construction.
[0031] When it is necessary to move the invert formwork 1, the adjusting screw cylinder 211 can be rotated. Under the thread fit of the adjusting screw cylinder 211 and the fixed screw 213, the universal wheel 212 is driven to move, so that the universal wheel 212 extends out of the receiving groove 22 and contacts the inner wall of the tunnel. Subsequently, the invert formwork 1 can be pushed, and the invert formwork 1 is moved with the assistance of the universal wheel 212, so as to realize the function that the formwork for construction is convenient to move, thereby improving the convenience degree when the formwork for construction is used, and finally completing the use work of the formwork for construction.
[0032] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed claim.
Claims
1. A formwork for tunnel invert construction, including an invert formwork (1), characterized in that: On both sides of the surface of the invert formwork (1), moving mechanisms (2) are provided. The moving mechanisms (2) are composed of moving components (21) and receiving grooves (22). A positioning mechanism (3) is provided on the surface of the invert formwork (1). The interior of the positioning mechanism (3) includes a positioning groove (31), a positioning post (32), a positioning hole (33), and a positioning piece (34). Cloth-feeding mechanisms (4) are provided on the surface of the invert formwork (1). The interior of the cloth-feeding mechanisms (4) includes a pin hole (41), a filling hole (42), a baffle (43), and a pin rod (44).
2. The formwork for tunnel invert construction according to claim 1, characterized in that: Receiving grooves (22) are provided at the corner positions on the surface of the invert formwork (1), and a moving component (21) is provided on one side of the receiving groove (22).
3. The formwork for tunnel invert construction according to claim 2, characterized in that: An adjusting screw cylinder (211), a universal wheel (212), and a fixing screw rod (213) are provided inside the moving component (21). Fixing screw rods (213) are fixed to both sides of the surface of the invert formwork (1) through brackets. An adjusting screw cylinder (211) is sleeved on the surface of the fixing screw rod (213), and the adjusting screw cylinder (211) is in threaded cooperation with the fixing screw rod (213).
4. A formwork for tunnel invert construction according to claim 3, characterized in that: A universal wheel (212) is provided inside the receiving groove (22), and one end of the universal wheel (212) is rotatably connected to the bottom of the adjusting screw cylinder (211).
5. A formwork for tunnel invert construction according to claim 1, characterized in that: Positioning pieces (34) are fixed to both ends of one side of the invert formwork (1), and positioning grooves (31) are provided at both ends of the other side of the invert formwork (1). The positioning grooves (31) are in plug-in fit with the positioning pieces (34).
6. The formwork for tunnel invert construction according to claim 5, characterized in that: Positioning holes (33) are provided on the surface of the positioning piece (34), and positioning posts (32) are fixed to one side of the invert formwork (1). The positioning posts (32) are in socket fit with the positioning holes (33).
7. A formwork for tunnel invert construction according to claim 1, characterized in that: Equidistantly spaced filling holes (42) are provided on the surface of the invert formwork (1), and baffles (43) are rotatably connected to the surface of the invert formwork (1). The baffles (43) cover the surfaces of the filling holes (42).
8. A formwork for tunnel invert construction according to claim 7, characterized in that: A pin hole (41) is provided at one end of the baffle (43), and a pin rod (44) is rotatably connected to the surface of the invert formwork (1). When the pin rod (44) is parallel to the pin hole (41), the pin rod (44) is located inside the pin hole (41). When the pin rod (44) rotates to intersect with the pin hole (41), the surface of the pin rod (44) is in close fit with the surface of the baffle (43) to fix the baffle (43).