Secondary lining trolley small side wall gap quick plugging device and installation method thereof

Abstract

The present invention provides a device for quickly plugging the gap of a small side wall of a secondary lining trolley and an installation method thereof, wherein the device comprises a block for plugging the gap, a baffle plate for fixing the block, and a support plate, wherein the bottom surface of the block is fixedly arranged at the front end of the baffle plate, and the rear end of the baffle plate is hingedly connected to a connecting rod through a first hinge shaft, and a screw is connected to the connecting rod axially fixed and circumferentially rotatable, and a threaded sleeve is sleeved on the screw, and the support plate is fixedly installed on the side of the trolley template at the bottom, and a support rod is arranged on the side of the support plate away from the trolley template, and the support rod is tilted downwardly and arranged on the support plate, and the other end of the support rod is connected to the outer wall of the threaded sleeve. The device can be used repeatedly and can adapt to various working conditions. During construction, it only needs to tighten the screw and fix it, so that the reinforcement effect is controllable and the construction process is standardized.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, and in particular to a device for quickly plugging a small side wall gap of a secondary lining trolley and an installation method thereof. Background Art

[0002] With the extensive construction of tunnel projects, the use of lining trolleys for tunnel secondary lining has been widely promoted. During the construction process, it is necessary to cooperate with steel formwork trolleys to form the secondary lining. Due to the uneven surrounding rock base caused by excavation, gaps will appear at the connection between the formwork and the small side wall at the bottom of the tunnel. The shape of the gaps is irregular, and slurry will leak at the gaps; therefore, the gaps need to be sealed. In the prior art, geotextiles are generally used for continuous filling when the gaps are small, which has low efficiency and uncontrollable filling density. When the gaps are large, the geotextiles need to be reinforced with baffles, but the reinforcement effect is poor. Using an impact drill to set anchor points for reinforcement has a better effect, but the construction process is time-consuming and labor-intensive. Summary of the invention

[0003] In view of this, the problem to be solved by the present invention is to provide a device for quickly sealing the small side wall gaps of a secondary lining trolley. The device can be used repeatedly and can adapt to various working conditions. During construction, it only needs to tighten the screw and fix it, so that the reinforcement effect can be controlled and the construction process is standardized.

[0004] The present invention solves the above-mentioned technical problems through the following technical means: The present invention provides a device for quickly sealing the gaps in the small side walls of a secondary lining trolley, comprising a block for sealing the gaps, a baffle plate for fixing the block, and a support plate, wherein the bottom surface of the block is fixedly arranged at the front end of the baffle plate, and the rear end of the baffle plate is hingedly connected to a connecting rod through a first hinge shaft, and a screw is connected to the connecting rod for axial fixing and circumferential rotation, and a threaded sleeve is sleeved on the screw, and the support plate is fixedly installed on the side surface of the trolley template at the bottom end, and a support rod is arranged on the side of the support plate away from the trolley template, and the support rod is arranged on the support plate in a downward tilt, and the other end of the support rod is connected to the outer wall of the threaded sleeve.

[0005] Furthermore, the interior of the stopper is configured as an airbag structure, and the cross-section of the stopper in an inflated state is configured as an isosceles triangle, and the base of the isosceles triangle is fixed on the baffle.

[0006] Furthermore, a slide groove for installing a support plate is provided on the side of the trolley template, a limiting plate is provided at one end of the slide groove, a limiting hole is provided on one side wall of the slide groove, a threaded hole coaxial with the limiting hole is provided on the other side wall, a through hole corresponding to the limiting hole is provided on the support plate, a limiting rod is provided on the slide groove, one end of the limiting rod is provided with an external thread matching the threaded hole, and one end of the limiting rod passes through the limiting hole and the through hole and is screwed into the threaded hole.

[0007] Furthermore, the support rod is hingedly connected to the support plate through a second hinge axis, the angle between the support rod and the support plate is no more than 45 degrees, a limiting portion is provided on the support plate, and the maximum angle of the support rod is limited by the limiting portion, and the other end of the support rod is hingedly connected to the threaded sleeve through a third hinge axis.

[0008] Furthermore, the connecting rods are provided in plurality, and the connecting rods are arranged equidistantly on the baffle plate, and the connecting rods correspond one to one with the screw rods, the threaded sleeves and the support plates.

[0009] Furthermore, the stopper is made of rubber, and the equilateral sides of the outer wall of the stopper are arranged as smooth surfaces.

[0010] The present invention also provides an installation method for the above-mentioned device, comprising the following steps: S1, after the trolley moves to the position to be poured, first install and fix the trolley template; S2, after completing the fixation of the trolley template, install a baffle on the bottom side of the template trolley at the bottom close to the small side wall, and fix the baffle on the trolley template by bolts; S3, inflate the baffle to make it full, and insert one side of the baffle into the gap by fitting it against the bottom surface of the small side wall; S4, adjust the angle of the screw so that one end of the baffle of the screw is tilted upward, and the inclination angle is 5 to 10 degrees, rotate the screw to press the baffle forward so that the baffle fills the gap, and after completion, insert a fixing pin into the screw to limit the rotation of the screw to prevent it from loosening; S5, after the pouring is completed and the concrete is solidified, remove the fixing pin to loosen the screw and deflate the baffle to remove the mold.

[0011] It can be seen from the above technical scheme that the beneficial effects of the present invention are as follows: the present invention provides a device for quickly plugging the gap of the small side wall of the second lining trolley, comprising a block for plugging the gap, a baffle and a support plate for fixing the block, the bottom surface of the block is fixedly arranged at the front end of the baffle, the rear end of the baffle is hingedly connected to a connecting rod through a first hinge shaft, a screw is connected to the connecting rod axially fixed and circumferentially rotatable, a threaded sleeve is sleeved on the screw, the support plate is fixedly installed on the side of the trolley template at the bottom, a support rod is arranged on the side of the support plate away from the trolley template, the support rod is tilted downwardly and arranged on the support plate, and the other end of the support rod is connected to the outer wall of the threaded sleeve. The device can be used repeatedly and can adapt to a variety of working conditions. During construction, it only needs to tighten the screw and fix it, so that the reinforcement effect is controllable and the construction process is standardized. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0013] Figure 1 It is a structural schematic diagram of the present invention;

[0014] Figure 2 A schematic diagram of the position of the chute of the present invention;

[0015] Figure 3 It is a partial enlarged view of the position of the chute of the present invention;

[0016] Figure 4 A cross-sectional view of the chute position of the present invention;

[0017] Figure 5 Schematic diagram of the formwork trolley for the secondary lining of the tunnel.

[0018] Reference numerals:

[0019] 1-block; 2-baffle; 3-support plate; 4-connecting rod; 5-threaded sleeve; 6-screw; 7-support rod; 8-trolley template; 81-slide groove; 31-slider; 9-gap; 31-through hole; 811-limiting hole; 812-limiting rod. DETAILED DESCRIPTION

[0020] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0021] See also Figures 1 to 5 The present invention provides a device for quickly plugging gaps in small side walls of a secondary lining trolley, comprising a block 1 for plugging gaps 9, a baffle 2 and a support plate 3 for fixing the block 1, wherein the bottom surface of the block 1 is fixedly arranged at the front end of the baffle 2, and the rear end of the baffle 2 is hingedly connected to a connecting rod 4 through a first hinge shaft, and a screw 6 is axially fixedly connected to the connecting rod 4 for circumferential rotation, and a threaded sleeve 5 is sleeved on the screw 6, and the support plate 3 is fixedly installed on the side of a trolley template 8 at the bottom end, and a support rod 7 is arranged on the side of the support plate 3 away from the trolley template 8, and the support rod 7 is arranged on the support plate 3 tilted downward, and the other end of the support rod 7 is connected to the outer wall of the threaded sleeve 5. By adding auxiliary devices to the trolley structure, a wedge-shaped rubber is used to seal the gap 9 between the small side wall and the second lining trolley, which can be reused many times. A baffle 2 is set behind the wedge-shaped rubber, and the baffle 2 is connected to the screw 6 through a universal pin, which can adapt to various working conditions. During construction, it is only necessary to tighten the screw 6 and fix it, so that the reinforcement effect is controllable and the construction process is standardized. A bearing is set at one end of the connecting rod 4 away from the baffle 2, and the screw 6 is connected to the connecting rod 4 through the bearing.

[0022] As a further improvement to the above technical solution, the interior of the block 1 is set as an airbag structure, and the cross-section of the block 1 in the inflated state is set as an isosceles triangle, and the base of the isosceles triangle is fixed on the baffle 2. The block 1 is set as an airbag structure, inflated when needed, and deflated when not in use, and the rear baffle 2 is set as multiple pieces, and the adjacent baffles 2 are connected by connecting rods 4 for easy storage and sorting. At the same time, the cross-section of the block 1 is set as an isosceles triangle structure, which is convenient for inserting the sharp corner part into the gap 9, and the two sides are abutted against the bottom surface of the small side wall and the trolley template 8 to completely close the gap 9 to prevent mortar leakage. By setting it as an airbag structure, it can adapt to gaps 9 of various shapes and can be blocked.

[0023] As a further improvement of the above technical solution, a slide groove 81 for installing the support plate 3 is provided on the side of the trolley template 8, a limiting plate is provided at one end of the slide groove 81, a limiting hole 811 is provided on one side wall of the slide groove 81, and a threaded hole coaxial with the limiting hole 811 is provided on the other side wall, a through hole 31 corresponding to the limiting hole 811 is provided on the support plate 3, a limiting rod 812 is provided on the slide groove 81, one end of the limiting rod 812 is provided with an external thread matching the threaded hole, and one end of the limiting rod 812 passes through the limiting hole 811 and the through hole 31 and is screwed into the threaded hole. By setting a slide groove 81 on the side of the bottom of the trolley template 8 for installing the support plate 3, and setting a slider 31 matching the slide groove 81 on the support plate 3, the support plate 3 can be easily installed and disassembled on the trolley template 8. After the trolley template 8 is installed, multiple support plates 3 are inserted into the corresponding slide grooves 81 in order, and then the limiting rod 812 is inserted into the limiting hole 811 but tightened in the threaded hole to prevent it from loosening, thereby preventing the support plate 3 from sliding off.

[0024] As a further improvement to the above technical solution, the support rod 7 is hingedly connected to the support plate 3 through a second hinge axis, the angle between the support rod 7 and the support plate 3 is not greater than 45 degrees, a limit portion is provided on the support plate 3, and the maximum angle of the support rod 7 is limited by the limit portion, and the other end of the support rod 7 is hingedly connected to the threaded sleeve 5 through a third hinge axis. The support rod 7 is hingedly connected through the second hinge axis so that the position of the threaded sleeve 5 can be swung to adjust, and the threaded sleeve 5 is hingedly connected to the support rod 7.

[0025] As a further improvement to the above technical solution, a plurality of connecting rods 4 are provided, and the plurality of connecting rods 4 are equidistantly arranged on the baffle 2 , and the connecting rods 4 correspond one to one with the screw rod 6 , the threaded sleeve 5 and the support plate 3 .

[0026] As a further improvement to the above technical solution, the block 1 is made of rubber, and the outer wall of the block 1 is equilaterally smooth. The outer wall of the block 1 is set as a smooth surface to prevent concrete from sticking to it and making it difficult to demould. Preferably, during installation, a film can be wrapped on the outer surface of the block 1 after it is inflated and then inserted into the gap 9 to facilitate demoulding. The block 1 is made of rubber to make it elastic and can fill the gap 9 when under pressure.

[0027] The present invention also provides a method for installing the above device, comprising the following steps:

[0028] S1. After the trolley moves to the position to be poured, the trolley template 8 is first installed and fixed; after the trolley template 8 is fixed, the size of the gap 9 is determined, and different sizes of wedge-shaped baffles 2 can be selected according to the size of the gap 9;

[0029] S2. After the trolley template 8 is fixed, a baffle plate 2 is installed on the bottom side of the template trolley near the small side wall at the bottom, and the baffle plate 2 is fixed to the trolley template 8 by bolts;

[0030] S3, inflate the block 1 to make it full, and insert one side of the block 1 into the gap 9 by fitting it against the bottom surface of the small side wall;

[0031] S4, adjust the angle of the screw 6 so that one end of the baffle 2 of the screw 6 tilts upward, the tilt angle is 5-10 degrees, turn the screw 6 to press the block 1 forward, so that the block 1 fills the gap 9, and after completion, insert a fixing pin into the screw 6 to limit the rotation of the screw 6 to prevent it from loosening; transmit the force to the connecting rod 4 through the screw 6, and the connecting rod 4 automatically adjusts the force in the fixed direction transmitted by the screw 6 to the force perpendicular to the vertical direction of the gap 9, and the upper and lower layers of the rubber are tightly engaged with the trolley and the small side wall and elastically deformed, so as to achieve a better blocking effect;

[0032] S5. After the pouring is completed and the concrete is solidified, the fixing pin is removed and the screw 6 is loosened, and the block 1 is deflated to remove the mold.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A device for quickly plugging small side wall gaps of a secondary lining trolley, characterized in that: The invention comprises a block (1) for blocking a gap (9), a baffle (2) for fixing the block (1), and a support plate (3); the bottom surface of the block (1) is fixedly arranged at the front end of the baffle (2); the rear end of the baffle (2) is hingedly connected to a connecting rod (4) via a first hinge shaft; a screw (6) is connected to the connecting rod (4) in an axially fixed manner and circumferentially rotatable manner; a threaded sleeve (5) is sleeved on the screw (6); the support plate (3) is fixedly mounted on the side of a trolley template (8) at the bottom end; a support rod (7) is arranged on the side of the support plate (3) away from the trolley template (8); the support rod (7) is arranged on the support plate (3) in a downwardly inclined manner; the other end of the support rod (7) is connected to the outer wall of the threaded sleeve (5); the interior of the block (1) is arranged as an airbag structure; The cross section of the stopper (1) in the inflated state is set to be an isosceles triangle, the base of the isosceles triangle is fixed to the baffle plate (2), a slide groove (81) for mounting the support plate (3) is provided on the side of the trolley template (8), a limit plate is provided at one end of the slide groove (81), a limit hole (811) is provided on one side wall of the slide groove (81), and a threaded hole coaxial with the limit hole (811) is provided on the other side wall, a through hole (31) corresponding to the limit hole (811) is provided on the support plate (3), a limit rod (812) is provided on the slide groove (81), one end of the limit rod (812) is provided with an external thread matching the threaded hole, and one end of the limit rod (812) passes through the limit hole (811) and the through hole (31) and is screwed into the threaded hole.

2. The device for quickly plugging small side wall gaps of the secondary lining trolley according to claim 1 is characterized in that: The support rod (7) is hingedly connected to the support plate (3) via a second hinge shaft, the angle between the support rod (7) and the support plate (3) is no greater than 45 degrees, a limiting portion is provided on the support plate (3), and the maximum angle of the support rod (7) is limited by the limiting portion, and the other end of the support rod (7) is hingedly connected to the threaded sleeve (5) via a third hinge shaft.

3. The device for quickly plugging small side wall gaps of the secondary lining trolley according to claim 2 is characterized in that: A plurality of connecting rods (4) are provided, and the plurality of connecting rods (4) are arranged equidistantly on the baffle plate (2), and the connecting rods (4) correspond one to one with the screw rods (6), the threaded sleeves (5) and the support plate (3).

4. The device for quickly plugging small side wall gaps of the secondary lining trolley according to claim 3 is characterized in that: The stopper (1) is made of rubber, and equilateral sides of the outer wall of the stopper (1) are arranged as smooth surfaces.

5. A method for installing the small side wall gap rapid plugging device of the secondary lining trolley according to any one of claims 1 to 4, characterized in that: The steps include: S1. After the trolley is moved to the position to be poured, the trolley template (8) is first installed and fixed; S2. After the trolley template (8) is fixed, a baffle (2) is installed on the bottom side of the template trolley near the small side wall, and the baffle (2) is fixed to the trolley template (8) by bolts; S3, inflate the stopper (1) to make it full, and insert one side of the stopper (1) into the gap (9) by fitting it against the bottom surface of the small side wall; S4. Adjust the angle of the screw rod (6) so that one end of the baffle (2) of the screw rod (6) is tilted upward, and the tilt angle is 5 to 10 degrees. Turn the screw rod (6) to press the baffle (1) forward so that the baffle (1) fills the gap (9). After completion, insert a fixing pin into the screw rod (6) to limit the rotation of the screw rod (6) and prevent it from loosening. S5. After the pouring is completed and the concrete is solidified, the fixing pin is removed and the loose screw (6) is loosened while the stopper (1) is deflated to remove the mold.

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