Culvert template and installation method

Abstract

The invention relates to a culvert template and an installation method, belonging to the technical field of culvert construction. A first I-wheel spool and a second I-wheel spool are driven to rotate synchronously by a rotating part. At this time, the second I-wheel spool is in a vertical state. Then an adjusting screw is adjusted to drive the third I-wheel spool to move. The third I-wheel spool drives the first I-wheel spool to rotate and slides along the rotating part at the same time. The sliding of the first I-wheel spool drives the movement of a hinged part. The hinged part pulls the second I-wheel spool to move and tilts the second I-wheel spool. At this time, the rotating part continues to rotate to drive the second I-wheel spool to drive a spherical swing part to swing back and forth. The spherical swing part drives a resetting part to reciprocate and fit and collide with the inner walls at both ends of an arc template, so that the deformed parts at both ends of the arc template are reset, thereby solving the problem that the deformation of a lightweight template may cause uneven stress distribution in a subsequent concrete structure during the pouring process.

Description

Technical Field

[0001] The invention belongs to the technical field of culvert construction, and in particular relates to a culvert template and an installation method. Background Art

[0002] Culverts usually need to cross existing roads, so the construction area of ​​most culverts is usually limited to the bottom of the road. At present, the formwork in culvert construction is usually made of wood formwork, aluminum alloy formwork or steel formwork. In small-scale or temporary culvert construction projects, due to terrain restrictions, the space available for operation is limited, and light, easy-to-carry and install formwork is required. Therefore, lightweight formwork such as wood formwork or aluminum alloy formwork is usually used. When installing the culvert formwork, it is mostly necessary to select the template that matches it according to the specific size of the culvert, and then transport the required template to the construction site.

[0003] At present, there are some problems with the lightweight formwork used in small-scale or temporary culvert construction projects: lightweight formwork is generally transported by transport vehicles during transportation, so it is inevitable to be squeezed and vibrated during transportation, and lightweight formwork is prone to deformation due to squeezing and vibration. Since it is a small-scale or temporary culvert construction, high efficiency and cost control are often pursued. Therefore, lightweight formwork is generally used directly after being transported to the construction site. The deformation of these lightweight formworks may cause uneven stress distribution in the subsequent concrete structure during the pouring process, thereby affecting the overall safety and stability of the structure. In this regard, a culvert formwork and an installation method are proposed. Summary of the invention

[0004] In order to solve the above-mentioned problems existing in the prior art, the present invention provides a culvert formwork and an installation method, which solves the problem in the prior art that the deformation of the lightweight formwork may cause uneven stress distribution in the subsequent concrete structure during the pouring process, thereby affecting the overall safety and stability of the structure.

[0005] The object of the present invention can be achieved by the following technical scheme: a culvert template, comprising two vertical templates, an arc template and a reset assembly for resetting the arc template, the two vertical templates are detachably connected to the two ends of the arc template respectively, the reset assembly is arranged between the two ends of the arc template, and the reset assembly intermittently fits with the inner walls of the two ends of the arc template;

[0006] The reset assembly comprises a support part, a rotating part rotatably arranged on the support part, a first spool, a second spool, a third spool, a spherical swing part and a reset part, one end of the third spool is fitted on the first spool, the other end of the third spool is movably connected to the support part through an adjusting member, one end of the spherical swing part is fitted on the second spool, the other end of the spherical swing part is hinged on the reset part, the axial part of the first spool is slidably sleeved on one end of the rotating part, the axial part of the second spool is rotatably arranged on the other end of the rotating part through a rotating shaft perpendicular to the rotating part, and the first spool and the second spool are connected through a hinged part;

[0007] The rotating part drives the first spool and the second spool to rotate synchronously, the adjusting part drives the third spool to slide horizontally along the rotating part, the third spool also drives the first spool to slide horizontally along the rotating part, the first spool drives the second spool and the rotating shaft to rotate synchronously through the hinge part, the second spool drives the spherical swing part to swing back and forth, the spherical swing part drives the resetting part to reciprocate and fit the inner walls at both ends of the arc template, so that the deformed parts at both ends of the arc template are reset.

[0008] As a further solution of the present invention, the arc-shaped inner wall of the arc-shaped template is provided with a plurality of first grooves, and the plurality of first grooves are equidistantly distributed.

[0009] As a further solution of the present invention, the reset part includes a reset rod and a guide rod arranged on the support part, the reset rod slidably passes through the guide rod, and the two ends of the reset rod are arc structures, and the arc structures match the arcs at both ends of the arc template.

[0010] As a further solution of the present invention, the rotating part is a rotating shaft, a gap is left between the second spool bobbin and the rotating shaft, and the rotating shaft passes through the gap between the second spool bobbin and the rotating shaft.

[0011] As a further solution of the present invention, the spherical swinging part includes a sphere and a connecting rod, one end of the connecting rod is connected to the sphere, the other end of the connecting rod is hinged to the reset rod, and the outer wall of the sphere is fitted with two horizontal plates of the I-shaped I-shaped wheel shaft.

[0012] As a further solution of the present invention, the outer walls of the two transverse plates of the third I-wheel spool I-shaped are respectively fitted with the inner walls of the two transverse plates of the first I-wheel spool I-shaped through a plurality of balls, and the plurality of balls are arranged on the outer walls of the two transverse plates of the third I-wheel spool I-shaped or on the inner walls of the two transverse plates of the first I-wheel spool I-shaped.

[0013] As a further solution of the present invention, the adjusting member is an adjusting screw, and one end of the adjusting screw is connected to the third I-shaped wheel spool, and the other end of the adjusting screw is threadedly connected to the supporting part.

[0014] As a further solution of the present invention, a protrusion is provided on the rotating part, and a guide rail matching with the protrusion is provided at the axis center of the first spool.

[0015] A method for installing a culvert formwork comprises the following steps:

[0016] S1: First, transfer the two vertical templates, the arc template and the reset assembly to the culvert to be constructed, set up a horizontal area on the ground of the culvert, and place the support part on the horizontal area;

[0017] S2: Place two vertical templates vertically on the ground, pre-fix the two vertical templates, and then pre-fix the arc template at a position close to the top of the culvert;

[0018] S3: First, the rotating part drives the first spool and the second spool to rotate. During the rotation process, the adjusting part drives the third spool to slide horizontally along the rotating part by slowly adjusting the adjusting part. The third spool drives the first spool to slide horizontally along the rotating part. The first spool drives the second spool and the rotating shaft to rotate synchronously through the hinge part, so that the second spool drives the spherical swing part to swing back and forth. The spherical swing part drives the reset part to fit the inner walls of the two ends of the arc template back and forth, so that the deformed parts at the two ends of the arc template are reset, and the reset arc template is fixed;

[0019] S4: Fix the two vertical templates and the arc template to complete the installation of the culvert template.

[0020] As a further solution of the present invention, the two vertical templates in S2 are pre-fixed to the ground by anchors, and the two vertical templates and the arc template are tightly connected by bolts and nuts by pre-setting bolt holes on the vertical templates and the arc templates.

[0021] The beneficial effects of the present invention are:

[0022] The rotating part is driven by a motor to rotate, and the rotating part drives the first I-wheel spool and the second I-wheel spool to rotate synchronously. At this time, the second I-wheel spool is in a vertical state, and then the adjusting screw is adjusted to drive the third I-wheel spool to move. The third I-wheel spool drives the first I-wheel spool to rotate and slides along the rotating part. The sliding of the first I-wheel spool drives the hinged part to move, and the hinged part pulls the second I-wheel spool to move, and tilts the second I-wheel spool. At this time, the rotating part continues to rotate, which drives the second I-wheel spool to drive the spherical swing part to swing back and forth. The spherical swing part drives the reset part to reciprocate and hit the inner walls at both ends of the arc template, so that the deformed parts at both ends of the arc template are reset. This solves the problem in the prior art that the deformation of the lightweight template may cause uneven stress distribution in the subsequent concrete structure during the pouring process, thereby affecting the overall safety and stability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the spherical swing part of the present invention;

[0026] Figure 3 A top view of the first spool bobbin and the third spool bobbin of the present invention;

[0027] Figure 4 It is a schematic diagram of the installation between the first spool shaft and the second spool shaft and the rotating part of the present invention.

[0028] Description of main component symbols:

[0029] In the figure: 1, vertical template; 2, arc template; 3, reset assembly; 31, support part; 32, rotating part; 33, first I-shaped wheel spool; 34, second I-shaped wheel spool; 35, third I-shaped wheel spool; 36, sphere swing part; 361, sphere; 362, connecting rod; 37, reset part; 371, reset rod; 372, guide rod; 38, adjusting member; 39, hinged part; 4, first groove; 5, protrusion; 6, guide rail; 7, rotating shaft. DETAILED DESCRIPTION

[0030] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0031] See also Figure 1-Figure 4The present embodiment provides a culvert template, comprising two vertical templates 1, an arc template 2 and a reset component 3 for resetting the arc template 2. The two vertical templates 1 are detachably connected to the two ends of the arc template 2, respectively. The reset component 3 is arranged between the two ends of the arc template 2, and the reset component 3 intermittently fits with the inner walls of the two ends of the arc template 2. The combination of the two vertical templates 1 and the arc template 2 in the culvert template used here can just match the structure of the culvert.

[0032] The reset assembly includes a support portion 31, a rotating portion 32 rotatably arranged on the support portion 31, a first spool 33, a second spool 34, a third spool 35, a spherical swing portion 36 and a reset portion 37. One end of the third spool 35 is fitted on the first spool 33, and the other end of the third spool 35 is movably connected to the support portion 31 through an adjusting member 38. One end of the spherical swing portion 36 is fitted on the second spool 34, and the other end of the spherical swing portion 36 is hinged on the reset portion 37. The axial part of the first spool 33 is slidably sleeved on one end of the rotating portion 32, and the axial part of the second spool 34 is movably connected to the rotating portion 38. The rotating shaft 7 vertical to 32 is rotatably arranged on the other end of the rotating part 32, and the first spool 33 and the second spool 34 are connected by a hinge part 39; the first spool 33, the second spool 34 and the third spool 35 are all composed of a cylindrical structure and two rings, and the two rings are located at both ends of the cylindrical structure. The total width of the two rings and the cylindrical structure in the third spool 35 is slightly smaller than the length of the cylindrical structure of the first spool 33, and this slightly smaller is 1-2 cm, because 1 cm is a distance that is convenient for design, and 2 cm is the maximum allowable interval. If the interval is too large, it will be greater than 2 cm, which will cause the third spool 35 to move along the cylindrical structure. Figure 1 When sliding left and right, the moving distance does not correspond to the actual moving distance of the reset part 37, resulting in a larger error. However, if the interval is too small, less than 1 cm, when the first spool 33 rotates, the first spool 33 and the third spool 35 will cause interference due to friction. The support part 31 is a support frame, which provides support for the rotating part 32, the first spool 33, the second spool 34, the third spool 35, the spherical swing part 36 and the reset part 37.

[0033] The rotating part 32 drives the first spool 33 and the second spool 34 to rotate synchronously, the adjusting member 38 drives the third spool 35 to slide horizontally along the rotating part 32, the third spool 35 also drives the first spool 33 to slide horizontally along the rotating part 32, the first spool 33 drives the second spool 34 and the rotating shaft 7 to rotate synchronously through the hinge part 39, the second spool 34 drives the spherical swing part 36 to swing back and forth, the spherical swing part 36 drives the reset part 37 to fit the inner walls of the two ends of the arc template 2 back and forth, so that the deformed parts of the two ends of the arc template 2 are reset, the adjusting member 38 is an adjusting screw, and one end of the adjusting screw is connected to the third spool 35, and the other end of the adjusting screw is screwed to the support part 31. During actual movement, the rotating part 32 is driven by an external motor, and the entire reset assembly 3 The power source is an external motor, which drives the rotating part 32 to rotate, and the rotating part 32 drives the first I-wheel spool 33 and the second I-wheel spool 34 to rotate synchronously. At this time, the second I-wheel spool 34 is in a vertical state, and then the adjusting screw is adjusted, and the adjusting screw drives the third I-wheel spool 35 to move. The third I-wheel spool 35 drives the first I-wheel spool 33 to rotate and slides along the rotating part 32. The sliding of the first I-wheel spool 33 drives the hinge part 39 to move, and the hinge part 39 pulls the second I-wheel spool 34 to move, and tilts the second I-wheel spool 34. At this time, the rotating part 32 continues to rotate, which drives the second I-wheel spool 34 to drive the spherical swing part 36 to swing back and forth. The spherical swing part 36 drives the reset part 37 to fit and impact the inner walls at both ends of the arc template 2 back and forth, so that the deformed parts at both ends of the arc template 2 are reset.

[0034] One thing that needs to be explained is that although the reset component 3 here resets the deformed parts at both ends of the arc template 2 by reciprocating impact on the arc template 2, the process of this reciprocating impact is special. Specifically, at the beginning, the rotating part 32 moves, but the spherical swinging part 36 and the second I-shaped wheel spool 34 do not swing at this time. The rotating part 32 drives the first I-shaped wheel spool 33 and the second I-shaped wheel spool 34 to rotate together. At this time, the second I-shaped wheel spool 34 is in a vertical state. At this time, some time is reserved so that the staff can confirm the position of the reset component 3 and the arc template 2 to avoid the rotation of the rotating part 32 immediately driving the reset component 3 to move, which will affect the arc template. 2 causes an accidental collision. Next, when it is confirmed that the positions of the reset component 3 and the arc template 2 are correct, the adjusting screw is manually adjusted at this time. The adjusting screw can be adjusted while the rotating part 32 rotates, so that the second I-shaped wheel spool 34 starts to swing. The specific swing amplitude can be adjusted by observing the positions of the reset component 3 and the arc template 2. After the arc template 2 is reset, the adjusting screw is adjusted in the reverse direction, so that the reset part 37 can be separated from the collision with the template, and the adjusting screw can accurately control the impact force to avoid damage to the template due to excessive impact force, or failure to achieve the expected effect due to too small impact force.

[0035] At present, in small-scale or temporary culvert construction projects, high efficiency and cost control are often pursued, so some aluminum alloy or wooden lightweight formworks are usually used. However, there are some problems with the lightweight formworks currently used. For example, lightweight formworks are generally transported by transport vehicles during transportation, so they are inevitably subjected to extrusion and vibration during transportation. Lightweight formworks are prone to deformation due to extrusion and vibration. Since it is a small-scale or temporary culvert construction, in order to improve efficiency and control costs, lightweight formworks are generally used directly after being transported to the construction site. The deformation of these lightweight formworks may cause uneven stress distribution in the subsequent concrete structure during the pouring process, thereby affecting the overall safety and stability of the structure.

[0036] In order to solve the above problem, in this embodiment, the rotating part 32 is driven by the motor to rotate, and the rotating part 32 drives the first spool 33 and the second spool 34 to rotate synchronously. At this time, the second spool 34 is in a vertical state, and then the adjusting screw is adjusted, and the adjusting screw drives the third spool 35 to move. The third spool 35 drives the first spool 33 to rotate and slides along the rotating part 32. The sliding of the first spool 33 drives the hinged part 39 to move, and the hinged part 39 pulls The second I-wheel spool 34 moves, pulling the second I-wheel spool 34 to tilt. At this time, the rotating part 32 continues to rotate, which drives the second I-wheel spool 34 to drive the spherical swing part 36 to swing back and forth. The spherical swing part 36 drives the reset part 37 to fit and collide with the inner walls at both ends of the arc-shaped template 2 back and forth, so that the deformed parts at both ends of the arc-shaped template 2 are reset, thereby solving the problem in the prior art that the deformation of the lightweight template may cause uneven stress distribution in the subsequent concrete structure during the pouring process, thereby affecting the overall safety and stability of the structure.

[0037] Considering that the deformation of the lightweight template is generally due to extrusion deformation, and in the case of extrusion deformation, extrusion will make the curvature of the lightweight template larger, in order to avoid the lightweight template from breaking during extrusion deformation, in this regard, in one embodiment, the arc-shaped inner wall of the arc-shaped template 2 is provided with a plurality of first grooves 4, and the plurality of first grooves 4 are equidistantly distributed, such as Figure 1 As shown, the fault tolerance rate of the arc template 2 is improved by designing several first grooves 4, which can avoid the problem of breakage of the lightweight template during extrusion deformation. At the same time, the arc template 2 needs to be deformed and reset, and the template needs to be used many times. Therefore, the arc template 2 with this structure can also prevent the template from being damaged during multiple extrusions and resets, thereby increasing the service life.

[0038] In addition, after the lightweight template is deformed, when the reset portion 37 collides with the arc template 2 to reset it, the impact is likely to cause damage to the arc template 2. In order to avoid damage to the original arc template 2 during reset, in one embodiment, the reset portion 37 includes a reset rod 371 and a guide rod 372 arranged on the support portion 31. The reset rod 371 slides through the guide rod 372, and the two ends of the reset rod 371 are arc structures, which match the arc shapes at both ends of the arc template 2. The guide rod 372 is fixedly connected to the support portion 31. By making the two ends of the reset rod 371 into arc structures, and at the same time installing flexible protective pads at both ends of the reset rod 371, the arc structures at both ends of the reset rod 371 match the arc shapes at both ends of the arc template 2, thereby avoiding damage to the original arc template 2 during reset.

[0039] It is worth noting that, since the second spool 34 is initially rotating, it is necessary to drive the spherical swinging portion 36 to swing subsequently. In order to avoid interference between the rotating portion 32 and the second spool 34, in one embodiment, the rotating portion 32 is a rotating shaft, and a gap is left between the second spool 34 and the rotating shaft. The rotating shaft 7 passes through the gap between the second spool 34 and the rotating shaft. The function of the rotating shaft 7 is to connect the second spool 34 with the rotating shaft, and at the same time, the second spool 34 can swing along the rotating shaft. The rotating shaft is connected to an external motor, and the size of the gap between the second spool 34 and the rotating shaft only needs to ensure that the second spool 34 does not touch the rotating shaft when swinging. The size of this gap can be designed according to actual conditions. In addition, the ball swinging part 36 includes a ball 361 and a connecting rod 362, one end of the connecting rod 362 is connected to the ball 361, and the other end of the connecting rod 362 is hinged to the reset rod 371, and the outer wall of the ball 361 is in contact with the two horizontal plates of the I-shaped second I-wheel spool 34. Firstly, the ball swinging part 36 is used in conjunction with the second I-wheel spool 34 to reduce friction during the swinging process and avoid damage. Secondly, the ball swinging part 36 can make the swinging movement more flexible, because the two horizontal plates of the I-shaped second I-wheel spool 34 are also in an arc shape, and the outer wall of the ball 361 is in contact with the two horizontal plates of the I-shaped second I-wheel spool 34, which can make the second I-wheel spool 34 drive the ball 361 to move, and will not interfere with the movement due to excessive friction.

[0040] Furthermore, since the entire reset portion 37 will generate vibration when colliding with the arc template 2, the vibration will be transmitted to the third I-wheel spool 35. Although the total width of the two rings and the cylindrical structure in the third I-wheel spool 35 is slightly smaller than the length of the cylindrical structure of the first I-wheel spool 33, in the case of vibration, the third I-wheel spool 35 is still likely to contact the first I-wheel spool 33, and there will be a friction resistance, which will partially affect the rotation of the first I-wheel spool 33. Therefore, in order to reduce friction as much as possible and further reduce this effect, in one embodiment, the outer walls of the two horizontal plates of the I-shaped of the third I-wheel spool 35 are respectively fitted with the inner walls of the two horizontal plates of the I-shaped of the first I-wheel spool 33 through a plurality of balls, and the plurality of balls are arranged on the outer walls of the two horizontal plates of the I-shaped of the third I-wheel spool 35 or on the inner walls of the two horizontal plates of the I-shaped of the first I-wheel spool 33. The ball design can reduce friction as much as possible and further reduce this effect.

[0041] Since the first spool 33 not only needs to rotate along the rotation axis, but also needs to slide along the rotation axis to make the spherical swinging portion 36 swing, so that the reset portion 37 can hit the arc template 2 back and forth, it is necessary to ensure that there is no interference between the rotation and linear motion of the first spool 33. In this regard, in one embodiment, a protrusion 5 is provided on the rotating portion 32, and a guide rail 6 matching the protrusion 5 is provided at the axis of the first spool 33. In addition, the third spool 35 does not contact the middle cylindrical structure of the first spool 33, thereby avoiding interference between the rotation of the third spool 35 and the first spool 33.

[0042] A method for installing a culvert formwork comprises the following steps:

[0043] S1: First, two vertical templates 1, arc template 2 and reset assembly 3 are transported to the culvert to be constructed, a horizontal area is set on the ground of the culvert, and the support part 31 is placed on the horizontal area;

[0044] S2: Place two vertical templates 1 vertically on the ground, pre-fix the two vertical templates 1, and then pre-fix the arc template 2 at a position close to the top of the culvert;

[0045] S3: First, the rotating part 32 drives the first spool 33 and the second spool 34 to rotate. During the rotation process, the adjusting member 38 is slowly adjusted, and the adjusting member 38 drives the third spool 35 to slide horizontally along the rotating part 32. The third spool 35 drives the first spool 33 to slide horizontally along the rotating part 32. The first spool drives the second spool 34 and the rotating shaft 7 to rotate synchronously through the hinge part 39, so that the second spool 34 drives the spherical swing part 36 to swing back and forth, and the spherical swing part 36 drives the reset part 37 to fit the inner walls at both ends of the arc template 2 back and forth, so that the deformed parts at both ends of the arc template 2 are reset, and the reset arc template 2 is fixed;

[0046] S4: Fix the two vertical templates 1 and the arc template 2 to complete the installation of the culvert template.

[0047] In order to achieve precise docking between the vertical formwork 1 and the curved formwork 2, ensure the matching accuracy between templates of different shapes, and avoid installation difficulties caused by template mismatch, in one embodiment, the two vertical formworks 1 in S2 are pre-fixed to the ground by anchors, and the two vertical formworks 1 and the curved formwork 2 are pre-set with bolt holes on the vertical formwork 1 and the curved formwork 2, and the vertical formwork 1 and the curved formwork 2 are tightly connected by bolts and nuts. The vertical formwork 1 is pre-fixed to the ground by anchors, which can effectively improve the stability of the entire formwork and prevent the formwork from shifting or tipping over during construction. The vertical formwork 1 and the curved formwork 2 are tightly connected by bolts and nuts, ensuring the firmness and stability of the connection part.

[0048] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A culvert template, characterized in that: It includes two vertical templates, an arc template and a reset component for resetting the arc template, the two vertical templates are detachably connected to the two ends of the arc template respectively, the reset component is arranged between the two ends of the arc template, and the reset component intermittently fits with the inner walls of the two ends of the arc template; The reset assembly comprises a support part, a rotating part rotatably arranged on the support part, a first spool, a second spool, a third spool, a spherical swing part and a reset part, one end of the third spool is fitted on the first spool, the other end of the third spool is movably connected to the support part through an adjusting member, one end of the spherical swing part is fitted on the second spool, the other end of the spherical swing part is hinged on the reset part, the axial part of the first spool is slidably sleeved on one end of the rotating part, the axial part of the second spool is rotatably arranged on the other end of the rotating part through a rotating shaft perpendicular to the rotating part, and the first spool and the second spool are connected through a hinged part; The rotating part drives the first spool and the second spool to rotate synchronously, the adjusting member drives the third spool to slide horizontally along the rotating part, the third spool also drives the first spool to slide horizontally along the rotating part, the first spool drives the second spool and the rotating shaft to rotate synchronously through the hinge part, the second spool drives the spherical swing part to swing back and forth, the spherical swing part drives the reset part to fit the inner walls at both ends of the arc template back and forth, so that the deformed parts at both ends of the arc template are reset; The reset part includes a reset rod and a guide rod arranged on the support part, the reset rod slidably penetrates the guide rod, and both ends of the reset rod are arc-shaped structures, and the arc-shaped structures match the arcs of both ends of the arc-shaped template; The outer walls of the two transverse plates of the third I-shaped wheel spool I-shaped are respectively fitted with the inner walls of the two transverse plates of the first I-shaped wheel spool I-shaped through a plurality of balls, and the plurality of balls are arranged on the outer walls of the two transverse plates of the third I-shaped wheel spool I-shaped or on the inner walls of the two transverse plates of the first I-shaped wheel spool I-shaped.

2. A culvert template according to claim 1, characterized in that: The arc-shaped inner wall of the arc-shaped template is provided with a plurality of first grooves, and the plurality of first grooves are distributed at equal distances.

3. A culvert template according to claim 1, characterized in that: The rotating part is a rotating shaft, a gap is left between the second spool bobbin and the rotating shaft, and the rotating shaft passes through the gap between the second spool bobbin and the rotating shaft.

4. A culvert template according to claim 1, characterized in that: The spherical body swinging part comprises a spherical body and a connecting rod, one end of the connecting rod is connected to the spherical body, the other end of the connecting rod is hinged to the reset rod, and the outer wall of the spherical body is fitted with two horizontal plates of the I-shaped I-shaped wheel spool.

5. A culvert template according to claim 1, characterized in that: The adjusting member is an adjusting screw, one end of which is connected to the third I-shaped wheel spool, and the other end of which is threadedly connected to the supporting portion.

6. A culvert template according to claim 1, characterized in that: The rotating part is provided with a protrusion, and the axis center of the first spool is provided with a guide rail matched with the protrusion.

7. A method for installing a culvert formwork, based on a culvert formwork according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1: First, transfer the two vertical templates, the arc template and the reset assembly to the culvert to be constructed, set up a horizontal area on the ground of the culvert, and place the support part on the horizontal area; S2: Place two vertical templates vertically on the ground, pre-fix the two vertical templates, and then pre-fix the arc template at a position close to the top of the culvert; S3: First, the rotating part drives the first spool and the second spool to rotate. During the rotation process, the adjusting part drives the third spool to slide horizontally along the rotating part by slowly adjusting the adjusting part. The third spool drives the first spool to slide horizontally along the rotating part. The first spool drives the second spool and the rotating shaft to rotate synchronously through the hinge part, so that the second spool drives the spherical swing part to swing back and forth. The spherical swing part drives the reset part to fit the inner walls of the two ends of the arc template back and forth, so that the deformed parts at the two ends of the arc template are reset, and the reset arc template is fixed; S4: Fix the two vertical templates and the arc template to complete the installation of the culvert template.

8. A method for installing a culvert formwork according to claim 7, characterized in that: In the S2, the two vertical templates and the ground are pre-fixed by anchors, and the two vertical templates and the arc-shaped template are tightly connected by bolts and nuts by pre-setting bolt holes on the vertical templates and the arc-shaped templates.

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