Quick connecting structure of composite material template for open cut tunnel construction

Abstract

The utility model provides a quick connecting structure of a composite material template for open cut tunnel construction, which belongs to the technical field of tunnel template construction and comprises template bodies, outer edges are integrally formed on the peripheral sides of the template bodies in the circumferential direction, connecting holes are formed in the outer edges of the adjacent template bodies in an opposite mode, and the connecting holes are connected with the template bodies. The device specifically comprises locking rods, lock heads, lock rings, eccentric protrusions and nuts, the multiple locking rods penetrate into connecting holes formed in the outer edges of adjacent formwork bodies in an opposite mode, then a handle is rotated to drive the eccentric protrusions on the lock heads and the lock rings to be clamped into clamping openings of the formwork bodies, the nuts are screwed down, and rapid connection and fixation of the composite formwork are achieved. The connection reliability and stability of the composite material formwork are effectively improved, and meanwhile the overall structure is easy to operate and convenient and fast to install.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel template construction, in particular to a composite material template quick connection structure for open-cut tunnel construction. Background Art

[0002] Nowadays, composite formwork has become a very important part of tunnel construction due to its advantages such as light weight and high strength.

[0003] With the rise of composite formwork, the use of traditional connection methods such as bolts and nails in tunnel construction has shown many disadvantages. For example, once the formwork is connected, disassembly requires a lot of manpower and time, and may damage the formwork, affecting the reuse of the formwork. The cost of consumables is high. At the same time, there are problems such as nails not being hammered firmly and bolts being loose, which may cause safety accidents such as formwork collapse and worker injuries. Therefore, with the development of technology and the increase in engineering needs, more and more engineering projects need to adopt new forms of connection methods to improve construction efficiency and quality. Utility Model Content

[0004] The purpose of the utility model is to provide a composite material formwork quick connection structure for open-cut tunnel construction, which can realize quick connection of the composite material formwork and improve the connection reliability and stability of the composite material formwork.

[0005] The embodiment of the utility model is realized by the following technical scheme: a composite material formwork quick connection structure for open-cut tunnel construction, comprising a formwork body, the outer peripheral side of the formwork body is annularly integrally formed with an outer edge, and a connecting hole is opened opposite to the outer edge of the adjacent formwork body, and also comprises: a locking rod, which is provided with a plurality of locking rods and is used to respectively penetrate into the connecting holes of the outer edge of the adjacent formwork body, and the outer wall of the locking rod is threaded; a locking head, which is fixedly connected to the end of the locking rod, the diameter of the locking head is larger than the diameter of the connecting hole, and a handle is fixedly provided on the locking head; a locking ring, which is slidably engaged and sleeved into the locking rod along an end of the locking rod away from the locking head, and the diameter of the locking ring is larger than the diameter of the connecting hole; eccentric protrusions, which are respectively fixedly provided on the outer walls of the locking head and the locking ring, and the sides of the eccentric protrusions corresponding to the locking head and the locking ring are inclined, and at the same time, a bayonet matching the eccentric protrusion is opened on the position of each eccentric protrusion on the formwork body; a nut, which is threadedly sleeved on the threaded portion of the locking rod and abuts against the locking ring.

[0006] Furthermore, the lock head on the same locking rod and the eccentric protrusion on the lock ring are provided with an arc-shaped notch groove on the side facing away from each other, and an arc-shaped strip is fixedly provided at the position corresponding to the arc-shaped notch groove in the bayonet of the template body, and the arc-shaped strip is used to follow the eccentric protrusion to rotate into the bayonet of the template body and snap into the arc-shaped notch groove.

[0007] Furthermore, the front end side of the arc-shaped strip that is inserted into the corresponding arc-shaped notch groove is configured in a pointed cone shape.

[0008] Furthermore, a rubber clip is fixedly provided at the middle of the arc strip, the cross section of the rubber clip is semicircular, and a clip groove matching the rubber clip is provided on the arc-shaped notch.

[0009] Furthermore, each locking rod is correspondingly provided with a U-shaped clip, the U-shaped clip is clamped on the outer edge of the adjacent template body, and the locking rod is slidably passed through the U-shaped clip, and the locking head and the locking ring are respectively abutted against the outer walls on both sides of the U-shaped clip.

[0010] Furthermore, a limiting strip is fixedly provided on one side close to each other in the U-shaped clip, and a limiting groove is penetrated through the outer edge of the adjacent template body corresponding to the position of the limiting strip, and the limiting strip and the limiting groove are plugged into each other.

[0011] Furthermore, a handle is fixedly provided on the U-shaped clip.

[0012] Furthermore, a clamping plate for clamping the handle is fixedly arranged on the template body, the clamping plate is 'U'-shaped, and the ports at both ends of the U-shaped clamping plate are arranged in a hook shape, and the hook-shaped end of the clamping plate is used to clamp on the handle.

[0013] Furthermore, a key slot is formed through one end of the locking rod away from the lock head, and a key bar is fixedly provided on the lock ring, and the key bar is slidably connected in the key slot.

[0014] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0015] 1. The utility model inserts a plurality of locking rods into the connecting holes opened opposite to the outer edges of the adjacent template bodies respectively, so that the locking head abuts against the outer edge of the template body, and then a locking ring is put on the locking rod to make the locking ring abut against another adjacent template body, and the eccentric protrusion of the locking ring and the eccentric protrusion of the locking rod are located in the same direction, and then the nut is tightened to abut against the locking ring, and finally the handle is rotated 90 degrees to drive the locking head and the eccentric protrusions on the locking ring to snap into the snap-in of the template body at the same time, thereby realizing the rapid connection and fixation of the composite material template, and effectively improving the connection reliability and stability of the composite material template. At the same time, the overall structure is simple to operate and convenient to install, and the inclined surface of the eccentric protrusion facilitates the eccentric protrusion to snap into the snap-in, and has the function of tightening the adjacent template body.

[0016] 2. The utility model provides an arc-shaped bar in the bayonet, which can prevent the eccentric protrusion from detaching outward after the arc-shaped bar is inserted into the arc-shaped notch groove, thereby improving the overall stability; and after the U-shaped clip is clamped on the adjacent template body, it can also improve the connection strength of the adjacent template bodies and effectively prevent the adjacent template bodies from slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of a composite material formwork quick connection structure for open-cut tunnel construction provided by the utility model;

[0019] Figure 2 This is an exploded view of the utility model for showing the template body, the locking rod and the U-shaped clamp;

[0020] Figure 3 For this utility model Figure 2 A magnified view of part A;

[0021] Figure 4 This is an exploded view of the utility model for showing the locking rod, the eccentric protrusion and the nut;

[0022] Figure 5 This is a schematic diagram of the structure of the utility model for displaying the lock head, the eccentric protrusion and the arc strip.

[0023] Icons: 1-template body, 11-outer edge, 12-connecting hole, 13-bayonet, 131-arc strip, 1311-rubber clip, 14-limiting groove, 2-locking rod, 21-lock head, 211-handle, 22-key slot, 3-locking ring, 31-key strip, 4-eccentric protrusion, 41-arc notch groove, 411-clip, 5-nut, 6-U-clip, 61-limiting strip, 62-handle, 7-splint. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example

[0027] The following is further described in conjunction with specific embodiments. Figure 1-Figure 5 As shown, the utility model is a composite material formwork quick connection structure for open-cut tunnel construction, which is used for quick connection of the formwork body 1. The formwork body 1 is square, and is molded by polypropylene and glass fiber. It is non-absorbent, corrosion-resistant, lightweight and high-strength, and has a large number of turnovers. An outer edge 11 is formed in an annular direction on the outer peripheral side of the formwork body 1. A connecting hole 12 is opened opposite to the outer edge 11 of the adjacent formwork body 1. The connecting hole 12 is circular. The quick connection structure specifically includes a plurality of locking rods 2. The locking rods 2 are cylindrical and are used to penetrate into the connecting holes 12 of the outer edges 11 of the adjacent formwork bodies 1 respectively. The outer wall thereof is spiral The locking rod 2 is provided with a pattern, and the lock head 21 is integrally formed at the end of the locking rod 2. The diameter of the lock head 21 is larger than the diameter of the connecting hole 12, and a handle is integrally formed on the lock head 21; the lock ring 3 is slidably engaged and sleeved into the locking rod 2 along the end of the locking rod 2 away from the lock head 21. Specifically, a key slot 22 is penetrated through the end of the locking rod 2 away from the lock head 21, and a key strip 31 is fixedly welded on the lock ring 3. The key strip 31 is slidably connected in the key slot 22. The key strip 31 is engaged with the key slot 22 to limit the lock ring 3. When the locking rod 2 rotates, the lock ring 3 will also rotate accordingly, and the diameter of the lock ring 3 is larger than the diameter of the connecting hole 12;

[0028] The eccentric protrusions 4 are integrally formed on the outer walls of the lock head 21 and the lock ring 3 respectively. The eccentric protrusions 4 corresponding to the lock head 21 and the lock ring 3 are inclined on the side close to each other. The inclined surface can facilitate the eccentric protrusions 4 to rotate into, and has the function of tightening the adjacent template body 1. At the same time, a bayonet 13 matched with the eccentric protrusion 4 is opened on the template body 1 at the position opposite to each eccentric protrusion 4; the nut 5 is threadedly sleeved on the threaded portion of the locking rod 2 and abuts against the lock ring 3. The nut 5 uses a butterfly nut 5 to facilitate rotation by the staff.

[0029] Reference Figure 4 , Figure 5The lock head 21 on the same locking rod 2 and the eccentric protrusion 4 on the lock ring 3 are both provided with an arc-shaped notch groove 41 on the side facing away from each other. An arc-shaped strip 131 is integrally formed at a position corresponding to the arc-shaped notch groove 41 in the bayonet 13 of the template body 1. The arc-shaped strip 131 is used to follow the eccentric protrusion 4 to rotate into the bayonet 13 of the template body 1 and snap into the arc-shaped notch groove 41, thereby limiting the eccentric protrusion 4 from moving outward and improving its stability. The arc-shaped strip 131 rotates into the corresponding arc-shaped notch. One side of the front end of the groove 41 is configured in a pointed cone shape to facilitate the arc strip 131 to enter the arc notch groove 41. A rubber clip strip 1311 is fixed in the middle of the arc strip 131. The cross-section of the rubber clip strip 1311 is semicircular. A clip slot 411 adapted to the rubber clip strip 1311 is provided on the arc notch groove 41. After the rubber clip strip 1311 is inserted into the clip slot 411, the eccentric protrusion 4 can be further prevented from freely rotating out of the clip 13 under strong force, thereby improving the overall stability.

[0030] Reference Figure 2 , Figure 3 In order to further improve the connection stability between adjacent template bodies 1, each locking rod 2 is correspondingly installed with a U-shaped clip 6, and the U-shaped clip 6 is clamped on the outer edge 11 of the adjacent template body 1. At the same time, the locking rod 2 is slidably penetrated on the U-shaped clip 6, and the lock head 21 and the lock ring 3 are respectively abutted against the outer walls on both sides of the U-shaped clip 6, and the sides close to each other in the U-shaped clip 6 are integrally formed with a limiting strip 61, and the cross-section of the limiting strip 61 is square, and a limiting groove 14 is provided at the position of the limiting strip 61 corresponding to the outer edge 11 of the adjacent template body 1, and the limiting strip 61 and the limiting groove 14 are plugged into each other, and a handle 62 is integrally formed on the U-shaped clip 6, and the handle 62 can facilitate pulling the U-shaped clip 6.

[0031] Reference Figure 2 , Figure 3 In order to prevent the handle from rotating freely and fix the handle, a clamping plate 7 for clamping the handle is welded on the template body 1. The clamping plate 7 is in a 'U' shape, and the ports at both ends of the U-shape of the clamping plate 7 are hook-shaped. The hook-shaped end of the clamping plate 7 is used to clamp on the handle.

[0032] The working process of this embodiment is as follows: when installing the composite material formwork during tunnel construction, firstly, the composite material formworks are connected flush with each other, and the connecting holes 12 between the adjacent formwork bodies 1 are also aligned with each other, and then the U-shaped clamp 6 is inserted into the outer edge 11 of the adjacent formwork bodies 1, and the through hole on the U-shaped clamp 6 itself is directly opposite to the connecting hole 12 between the adjacent formwork bodies 1, and then a plurality of locking rods 2 are respectively inserted into the U-shaped clamp 6 and the connecting holes 12 opened directly opposite to the outer edge 11 of the adjacent formwork bodies 1, and the lock head 21 will abut against the U-shaped clamp 6, and then the locking ring 3 is put on the locking rod 2, and the key strip 31 of the locking ring 3 is directly opposite to the key groove of the locking rod 2 22 slides in, so that the locking ring 3 abuts against the side wall of the other side of the U-shaped clamp 6, and the eccentric protrusion 4 of the locking ring 3 and the eccentric protrusion 4 of the locking rod 2 must be in the same direction, and then the nut 5 is tightened to abut against the locking ring 3, and finally the handle is rotated 90 degrees to drive the lock head 21 and the eccentric protrusion 4 on the locking ring 3 to be simultaneously clamped into the bayonet 13 of the template body 1, and the clamping plate 7 will clamp and fix the handle to prevent the handle from rotating freely, thereby realizing the rapid connection and fixation of the composite material template, effectively improving the connection reliability and stability of the composite material template, and at the same time, the overall structure is simple to operate and easy to install, and the operator can operate and assemble it more conveniently.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A composite material formwork quick connection structure for open-cut tunnel construction, comprising a formwork body (1), wherein the outer peripheral side of the formwork body (1) is integrally formed with an outer edge (11) in an annular direction, and a connection hole (12) is provided adjacent to the outer edge (11) of the formwork body (1), wherein: Also includes: A plurality of locking rods (2) are provided, and are used to respectively penetrate into the connecting holes (12) of the outer edges (11) of the adjacent template bodies (1), and the outer walls of the locking rods (2) are provided with threads; A lock head (21) is fixedly connected to the end of the locking rod (2), the diameter of the lock head (21) is larger than the diameter of the connecting hole (12), and a handle (211) is fixedly provided on the lock head (21); A lock ring (3) is slidably engaged and sleeved into the lock rod (2) along one end of the lock rod (2) away from the lock head (21), and the diameter of the lock ring (3) is larger than the diameter of the connecting hole (12); The eccentric protrusions (4) are respectively fixedly arranged on the outer walls of the lock head (21) and the lock ring (3); the eccentric protrusions (4) corresponding to the lock head (21) and the lock ring (3) are arranged at an angle on the sides close to each other; and a bayonet (13) adapted to the eccentric protrusion (4) is provided on the template body (1) at a position directly opposite to each eccentric protrusion (4); A nut (5) is threadably sleeved on the threaded portion of the locking rod (2) and abuts against the locking ring (3).

2. The composite material formwork quick connection structure for open-cut tunnel construction according to claim 1 is characterized in that: The lock head (21) on the same locking rod (2) and the eccentric protrusion (4) on the lock ring (3) are both provided with an arc-shaped notch groove (41) on the side facing away from each other, and an arc-shaped strip (131) is fixedly provided at a position corresponding to the arc-shaped notch groove (41) in the bayonet (13) of the template body (1), and the arc-shaped strip (131) is used to follow the eccentric protrusion (4) to rotate into the bayonet (13) of the template body (1) and snap into the arc-shaped notch groove (41).

3. The composite material formwork quick connection structure for open-cut tunnel construction according to claim 2 is characterized in that: The front end side of the arc-shaped strip (131) that is inserted into the corresponding arc-shaped notch groove (41) is arranged in a pointed cone shape.

4. The composite material formwork quick connection structure for open-cut tunnel construction according to claim 2 is characterized in that: A rubber clip strip (1311) is fixedly arranged at the middle position of the arc strip (131), the cross section of the rubber clip strip (1311) is semicircular, and a clip groove (411) adapted to the rubber clip strip (1311) is provided on the arc notch groove (41).

5. The composite material formwork quick connection structure for open-cut tunnel construction according to claim 1 is characterized in that: Each locking rod (2) is correspondingly provided with a U-shaped clip (6), and the U-shaped clip (6) is clamped on the outer edge (11) of the adjacent template body (1). At the same time, the locking rod (2) is slidably passed through the U-shaped clip (6), and the locking head (21) and the locking ring (3) are respectively abutted against the outer walls on both sides of the U-shaped clip (6).

6. The composite material formwork quick connection structure for open-cut tunnel construction according to claim 5 is characterized in that: A limiting strip (61) is fixedly arranged on one side of the U-shaped clamp (6) close to each other, and a limiting groove (14) is provided through the outer edge (11) of the adjacent template body (1) at a position corresponding to the limiting strip (61), and the limiting strip (61) and the limiting groove (14) are plugged into and matched with each other.

7. The composite material formwork quick connection structure for open-cut tunnel construction according to claim 6 is characterized in that: A handle (62) is fixedly provided on the U-shaped clip (6).

8. The composite material formwork quick connection structure for open-cut tunnel construction according to claim 1 is characterized in that: A clamping plate (7) for clamping the handle (211) is fixedly arranged on the template body (1); the clamping plate (7) is in a U-shape; both ends of the U-shape of the clamping plate (7) are in a hook-shape; the hook-shaped end of the clamping plate (7) is used for clamping on the handle (211).

9. The composite material formwork quick connection structure for open-cut tunnel construction according to claim 1, characterized in that: A key slot (22) is formed through one end of the locking rod (2) away from the lock head (21), and a key bar (31) is fixedly provided on the lock ring (3), and the key bar (31) is slidably connected in the key slot (22).

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