A force transmission device for tunnel lining spiral struts with protective edges and its installation method

Abstract

This invention relates to the field of infrastructure technology, specifically a force transmission device and installation method for a spiral strut for tunnel lining with protective edges. The device includes a protective mechanism comprising a first protective plate, a second protective plate fixedly connected to one end of the first protective plate, and a limiting cavity opened on the outer side of the second protective plate. Installation components are fitted inside the concrete. Compared to traditional transmission methods, this device effectively distributes the force to the concrete surface and sides, reducing concrete pressure, and effectively protects the edges of the concrete without damaging the surface. Simultaneously, it ensures the support rod is at an appropriate angle, preventing excessive upward force on the trolley and thus ensuring the long-term stability, construction stability, and accuracy of the tunnel lining.

Description

Technical Field

[0001] This invention relates to the field of infrastructure technology, and in particular to a force transmission device for tunnel lining spiral struts that protects against sharp edges and its installation method. Background Technology

[0002] Tunnel lining trolleys are crucial equipment in tunnel construction, supporting the installation of tunnel linings and ensuring smooth construction and the stability of the tunnel structure. In the design and use of tunnel lining trolleys, the force transmission method of the outriggers has a significant impact on the safety and quality of tunnel lining construction.

[0003] Currently, there are generally two methods. The first is the force transfer method of embedding reinforcing bars into the infill surface. In this method, the reinforcing bars are embedded into the tunnel infill surface, and then the outriggers support these reinforcing bars directly. The advantage of this method is that it can vertically support the weight of the trolley and the construction load while providing a horizontal constraint on the trolley, thereby ensuring the trolley's lateral position is fixed and its stability is maintained, preventing the formation of misalignment in the low sidewalls. However, this method also has disadvantages. The embedding of reinforcing bars may damage the integrity of the infill surface, requiring later repairs and affecting subsequent construction. In addition, the embedding of reinforcing bars requires additional construction time and costs.

[0004] The second method involves supporting the outriggers at the bottom of the temporary drainage ditch, typically at the corner of the filling surface. This method avoids directly damaging the filling surface, maintaining its integrity. However, this method has some potential problems. Due to the large angle between the outriggers and the filling surface, the tunnel lining trolley may experience a significant upward thrust. This thrust could cause the trolley to float, affecting the thickness of the tunnel lining's arch concrete or the sidewall encroachment. Furthermore, if the trolley floats, it could cause misalignment at the longitudinal construction joints, impacting the overall quality of the tunnel lining. Summary of the Invention

[0005] In view of the problems in the prior art described above, the present invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a force transmission device for a tunnel lining spiral strut that protects against sharp edges.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a tunnel lining spiral strut force transmission device for protecting sharp edges, comprising,

[0008] The protective mechanism includes a first protective plate, a second protective plate fixedly connected to one end of the first protective plate, and a limiting cavity opened on the outside of the second protective plate, with an installation component adapted to be installed inside the concrete.

[0009] The first protective plate is designed in an L-shape with the first protective plate.

[0010] As a preferred embodiment of the tunnel lining spiral strut force transmission device for protecting sharp corners of the present invention, the limiting cavity is composed of an inclined surface and a flat surface. The inclined surface is designed to slope from the outside of the second protective plate to the inside of the second protective plate from top to bottom, and the flat surface is connected to the bottom end of the inclined surface.

[0011] As a preferred embodiment of the tunnel lining spiral strut force transmission device for protecting sharp edges of the present invention, the installation component includes a threaded sleeve fixedly connected inside the concrete, and a bolt threadedly connected to the inside of the threaded sleeve.

[0012] As a preferred embodiment of the tunnel lining spiral strut force transmission device for protecting sharp edges according to the present invention, it further includes:

[0013] The fastening mechanism includes a pad mounted on the outside of the concrete by the bolts, a through hole opened on the outside of the pad, and a rubber pad adapted to be installed inside the pad, wherein a limiting component is provided inside the pad.

[0014] As a preferred embodiment of the tunnel lining spiral strut force transmission device for protecting sharp edges of the present invention, the limiting component includes a fixing block slidably connected inside the pad, a ratchet fixedly connected to one end of the fixing block, and a locking block fixedly connected to the other end of the fixing block, wherein the upper and lower sides of the fixing block are fixedly connected to an inner plate.

[0015] The inner plate is slidably connected inside the pad, and one side of the inner plate is fixedly connected to one side of the rubber pad.

[0016] As a preferred embodiment of the tunnel lining spiral strut force transmission device for protecting sharp edges according to the present invention, it further includes:

[0017] The support mechanism includes a top plate adapted to be installed on the outside of the first protective plate, a side plate fixedly connected to one end of the top plate, and a slot formed on the inside of the side plate.

[0018] The top plate and the side plate are designed in an L-shape, and a support shaft is fixedly connected at the connection between the top plate and the side plate.

[0019] As a preferred embodiment of the tunnel lining spiral strut force transmission device for protecting sharp edges according to the present invention, it further includes:

[0020] The connecting mechanism includes a support rod connected to the trolley, a connecting sleeve fixedly connected to one end of the support rod, and a reinforcing rib fixedly connected to the outside of the connecting sleeve. One side of the connecting sleeve is designed to be open.

[0021] The present invention also provides an installation method.

[0022] To solve the above-mentioned technical problems, the present invention also provides the following technical solution: an installation method, including the aforementioned tunnel lining spiral strut force transmission device for protecting sharp edges, and an installation method comprising the following steps:

[0023] S1. Preparatory work;

[0024] S2. Installation work;

[0025] S3, Connecting to work;

[0026] The preparatory work includes the following steps:

[0027] Before the formwork is closed and the concrete is poured to fill the invert arch inside the tunnel;

[0028] Holes were made in the concrete side formwork for the invert arch filling;

[0029] Use bolts to embed the threaded sleeve into the concrete until the filling concrete hardens.

[0030] As a preferred embodiment of the installation method of the present invention, the installation work includes the following steps:

[0031] Place the protective structure on the surface of the inverted arch;

[0032] The pad is installed using bolts and threaded sleeves, and the protective mechanism is secured using the pad.

[0033] The support mechanism is installed on the outside of the pad.

[0034] As a preferred embodiment of the installation method of the present invention, the connection operation includes the following steps:

[0035] The connecting component is installed to the support shaft via a connecting sleeve;

[0036] Tighten the screws on the support rods until the construction requirements are met.

[0037] The beneficial effects of this invention are as follows: Compared with the force transmission method of traditional transmission, this device can not only effectively distribute the force to the concrete surface and sides, reducing the pressure on the concrete, but also effectively protect the edges and corners of the concrete without damaging the concrete surface; at the same time, it ensures that the support rod is at an appropriate angle, avoiding the situation where the trolley is subjected to a large upward thrust due to an excessive angle, which would cause the trolley to float, thus ensuring the long-term stability of the tunnel lining, as well as the stability and accuracy of the construction and the tunnel lining, providing support during the pouring of the secondary lining. Attached Figure Description

[0038] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0039] Figure 1 This is a schematic diagram of the overall invention.

[0040] Figure 2 This is a schematic diagram of the overall connection of the present invention.

[0041] Figure 3 This is a partial schematic diagram of the present invention.

[0042] Figure 4 This is a partial cross-sectional schematic diagram of the present invention.

[0043] Figure 5 This is a schematic diagram of the overall protective mechanism of the present invention.

[0044] Figure 6 This is a schematic diagram of the overall fastening mechanism of the present invention.

[0045] Figure 7 This is a cross-sectional schematic diagram of the present invention.

[0046] Figure 8 This is a schematic diagram of the overall support mechanism of the present invention.

[0047] Figure 9 This is a schematic diagram of the overall connection mechanism of the present invention. Detailed Implementation

[0048] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0049] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0050] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0051] Example 1

[0052] Reference Figures 1-9 This is the first embodiment of the present invention, which provides a tunnel lining helical strut force transmission device for protecting sharp edges, comprising,

[0053] The protective mechanism 100 includes a first protective plate 101, a second protective plate 102 fixedly connected to one end of the first protective plate 101, and a limiting cavity 103 opened on the outside of the second protective plate 102. An installation component 104 is adapted to be installed inside the concrete 2.

[0054] Among them, the first protective plate 101 is designed in an L-shape.

[0055] Specifically, the limiting cavity 103 is composed of an inclined surface 103a and a flat surface 103b. The inclined surface 103a is designed to slope from the outside of the second protective plate 102 to the inside of the second protective plate 102 from top to bottom. The flat surface 103b is connected to the bottom end of the inclined surface 103a.

[0056] Furthermore, the mounting component 104 includes a threaded sleeve 104a fixedly connected inside the concrete 2, and a bolt 104b threadedly connected to the inside of the threaded sleeve 104a.

[0057] Furthermore, it also includes,

[0058] The fastening mechanism 200 includes a pad 201 mounted on the outside of the concrete 2 by bolts 104b, a through hole 202 opened on the outside of the pad 201, and a rubber pad 203 adapted to be installed inside the pad 201. A limiting component 204 is provided inside the pad 201.

[0059] Preferably, the limiting component 204 includes a fixing block 204a that is slidably connected inside the pad 201, a ratchet 204b that is fixedly connected to one end of the fixing block 204a, and a locking block 204c that is fixedly connected to the other end of the fixing block 204a. The upper and lower sides of the fixing block 204a are fixedly connected to an inner plate 204d.

[0060] The inner plate 204d is slidably connected inside the pad 201, and one side of the inner plate 204d is fixedly connected to one side of the rubber pad 203.

[0061] It should be noted that it also includes,

[0062] The support mechanism 300 includes a top plate 301 adapted to be installed on the outside of the first protective plate 101, a side plate 302 fixedly connected to one end of the top plate 301, and a slot 303 opened on the inside of the side plate 302.

[0063] The top plate 301 and the side plate 302 are designed in an L-shape, and a support shaft 304 is fixedly connected at the connection between the top plate 301 and the side plate 302.

[0064] Preferred options also include,

[0065] The connecting mechanism 400 includes a support rod 401 connected to the trolley, a connecting sleeve 402 fixedly connected to one end of the support rod 401, and a reinforcing rib 403 fixedly connected to the outside of the connecting sleeve 402. One side of the connecting sleeve 402 is designed to be open.

[0066] First, before the formwork of the invert arch filling concrete 2 in tunnel 1 is closed and poured, holes are made on the side formwork of the invert arch filling concrete 2, and the threaded sleeve 104a is pre-embedded into the concrete 2 using bolt 104a until the filling concrete 2 solidifies.

[0067] Next, remove the bolt 104a from the inside of the threaded sleeve 104a, and place the first protective plate 101 on the surface of the concrete 2, so that the second protective plate 102 is located on one side of the concrete 2. Then, insert the bolt 104b into the through hole 202, and connect the bolt 104b to the threaded sleeve 104a in sequence until the pad 201 presses and fixes the second protective plate 102.

[0068] When the pad 201 is gradually tightened by the bolt 104b to secure the second protective plate 102, the ratchet 204b at one end of the fixing block 204a will be preferentially inserted into the limiting cavity 103. This ensures the overall stability of the second protective plate 102 when the pad 201 is pressing and fixing it, preventing it from slipping or shifting upwards and improving installation efficiency. At the same time, it also ensures the fit of the first protective plate 101 when it is placed on the concrete 2 surface. If there are foreign particles between the first protective plate 101 and the concrete 2, it cannot be guaranteed that the ratchet 204b can be properly inserted into the limiting cavity 103. The workers can directly judge the fit of the first protective plate 101 on the concrete 2 surface, avoiding rework caused by misfitting after the equipment is installed, and further improving the overall practicality of the equipment.

[0069] After the ratchet 204b engages inside the limiting cavity 103, continuing to tighten the bolt 104b will cause the pad 201 to gradually press against the second protective plate 102. At this time, the inner plate 204d will compress the rubber pad 203 until the pad 201 and the second protective plate 102 are completely in contact, thus achieving the fastening of the pad 201 to the second protective plate 102.

[0070] In summary, during installation, the ratchet 204b engages preferentially inside the limiting cavity 103, preventing the second protective plate 102 from slipping or shifting upwards during installation, thus facilitating installation. After installation, the pad 201 effectively secures the second protective plate 102, and with the ratchet 204b engaging inside the limiting cavity 103, it ensures that the second protective plate 102 cannot move during use, effectively protecting the edges of the concrete 2.

[0071] Example 2

[0072] Reference Figures 1-9 This is the second embodiment of the present invention, which is based on the previous embodiment:

[0073] After the pad 201 is installed, the inner plate 204d will completely squeeze the rubber pad 203, causing the fixing block 204a to drive the locking block 204c at one end to be completely exposed.

[0074] Next, by connecting the slot 303 on the inner side of the side plate 302 with the block 204c, the installation of the top plate 301 and the side plate 302 can be completed. If the block 204c cannot be installed through the slot 303, it can be determined that the block 204c is not completely exposed. At this time, the pad 201 is not completely fastened to the second protective plate 102. Thus, on the premise of installing the side plate 302, the tightness of the pad 201 after installation can be verified a second time to ensure that the pad 201 has been fastened.

[0075] When the side plate 302 is installed on the outside of the pad 201 by the snap-fit ​​of the slot 303 and the snap-fit ​​of the block 204c, not only can the installation of the side plate 302 be guaranteed by the snap-fit, but the thrust of the rubber pad 203 on the inner plate 204d can also be converted into the pull of the block 204c on the slot 303, thereby improving the stability of the side plate 302 after installation. At the same time, the force conversion can cancel the thrust of the rubber pad 203 on the inner plate 204d, causing the ratchet 204b to squeeze the limiting cavity 103 and thus avoid the bolt 104b being loosened by the reaction force and the reduction of the bolt 104b life. This ensures the overall installation stability and can also improve the service life of the equipment.

[0076] Finally, engage the connecting sleeve 402 at one end of the support rod 401 with the outside of the support shaft 304, and tighten the screw of the support rod 401 until the construction requirements are met.

[0077] By using the support and force transmission method of this device, the force can be effectively distributed to the surface and sides of concrete 2, reducing the pressure on concrete 2. At the same time, it can effectively protect the edges and corners of concrete 2. Compared with the traditional method of inserting steel bars, it can ensure the long-term stability of tunnel 1 lining without damaging the surface of concrete 2.

[0078] Compared to the method of using the transmission support to fill the corner at the bottom of the temporary ditch, this method can reduce the angle and avoid the trolley being subjected to a large upward thrust, which would cause the trolley to float up, thus ensuring the stability of construction and the accuracy of tunnel lining.

[0079] In summary, compared with traditional transmission methods, this equipment can effectively distribute the force to the surface and sides of the concrete 2, reducing the pressure on the concrete 2. It can also effectively protect the edges and corners of the concrete 2 without damaging its surface. At the same time, it ensures that the support rod 401 is at an appropriate angle, avoiding excessive angles that could cause the trolley to float due to a large upward thrust. This ensures the long-term stability of the tunnel 1 lining, the stability of construction, and the accuracy of tunnel lining, providing support for the secondary lining pouring.

[0080] Example 3

[0081] Reference Figures 1-9 This is the third embodiment of the present invention. Unlike the previous embodiment, this embodiment provides an installation method, including a tunnel lining spiral strut force transmission device for protecting sharp edges, and an installation method comprising the following steps:

[0082] S1. Preparatory work;

[0083] S2. Installation work;

[0084] S3, Connecting to work;

[0085] The preparatory work includes the following steps:

[0086] Before the formwork is closed and the concrete is poured to fill the invert arch inside the tunnel;

[0087] Holes were made in the concrete side formwork for the invert arch filling;

[0088] Use bolts to embed the threaded sleeve into the concrete until the filling concrete hardens.

[0089] Specifically, the installation process includes the following steps:

[0090] Place the protective structure on the surface of the inverted arch;

[0091] The pad is installed using bolts and threaded sleeves, and the protective mechanism is secured using the pad.

[0092] The support mechanism is installed on the outside of the pad.

[0093] Furthermore, the connection process includes the following steps:

[0094] The connecting component is installed on the support shaft 304 via a connecting sleeve;

[0095] Tighten the screws on the support rods until the construction requirements are met.

[0096] In summary, the above installation steps not only make the operation convenient and reduce the overall construction time and costs for workers, but also avoid unnecessary problems that could lead to rework.

Claims

1. A force transmission device for a tunnel lining spiral strut to protect sharp edges, characterized in that: include, The protective mechanism (100) includes a first protective plate (101), a second protective plate (102) fixedly connected to one end of the first protective plate (101), and a limiting cavity (103) opened on the outside of the second protective plate (102). An installation component (104) is adapted to be installed inside the concrete (2). The first protective plate (101) is designed in an L-shape with the first protective plate (101); The mounting component (104) includes a threaded sleeve (104a) fixedly connected inside the concrete (2) and a bolt (104b) threadedly connected inside the threaded sleeve (104a). The fastening mechanism (200) includes a pad (201) mounted on the outside of the concrete (2) by the bolts (104b), a through hole (202) opened on the outside of the pad (201), and a rubber pad (203) adapted to be installed inside the pad (201). The pad (201) is provided with a limiting component (204). The support mechanism (300) includes a top plate (301) adapted to be installed on the outside of the first protective plate (101), a side plate (302) fixedly connected to one end of the top plate (301), and a slot (303) opened on the inside of the side plate (302). The top plate (301) and the side plate (302) are designed in an L-shape, and a support shaft (304) is fixedly connected at the connection between the top plate (301) and the side plate (302). The connecting mechanism (400) includes a support rod (401) connected to the trolley, a connecting sleeve (402) fixedly connected to one end of the support rod (401), and a reinforcing rib (403) fixedly connected to the outside of the connecting sleeve (402). One side of the connecting sleeve (402) is designed to be open. The limiting component (204) includes a fixing block (204a) slidably connected inside the pad (201), a ratchet (204b) fixedly connected to one end of the fixing block (204a), and a locking block (204c) fixedly connected to the other end of the fixing block (204a). Inner plates (204d) are fixedly connected to the upper and lower sides of the fixing block (204a). The inner plate (204d) is slidably connected inside the pad (201), and one side of the inner plate (204d) is fixedly connected to one side of the rubber pad (203).

2. The tunnel lining spiral strut force transmission device for protecting sharp edges as described in claim 1, characterized in that: The limiting cavity (103) is composed of an inclined surface (103a) and a flat surface (103b). The inclined surface (103a) is designed to slope from the outside of the second protective plate (102) to the inside of the second protective plate (102) from top to bottom. The flat surface (103b) is connected to the bottom end of the inclined surface (103a).

3. An installation method, characterized in that: The installation method for the tunnel lining spiral strut force transmission device for protecting sharp edges as described in claim 1 or 2 includes the following steps: S1. Preparatory work; S2. Installation work; S3, Connecting to work; The preparatory work includes the following steps: Before the formwork is closed and the concrete is poured to fill the invert arch inside the tunnel; Holes were made in the concrete side formwork for the invert arch filling; Use bolts to embed the threaded sleeve into the concrete until the filling concrete hardens.

4. The installation method as described in claim 3, characterized in that: The installation process includes the following steps: Place the protective structure on the surface of the inverted arch; The pad is installed using bolts and threaded sleeves, and the protective mechanism is secured using the pad. The support mechanism is installed on the outside of the pad.

5. The installation method as described in claim 4, characterized in that: The connection process includes the following steps: The connecting component is installed to the support shaft (304) via a connecting sleeve; Tighten the screws on the support rods until the construction requirements are met.

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