Rapid temporary supporting device for tunnel primary support steel arch

Abstract

The utility model discloses a rapid temporary supporting device for a tunnel primary supporting steel arch. The rapid temporary supporting device comprises a supporting steel pipe, an adjusting screw rod, an adjusting piece, a fixing piece, a clamping piece and a supporting piece. The first end of the supporting steel pipe is connected with the supporting piece, the second end of the supporting steel pipe is rotationally connected with the adjusting piece, and the adjusting piece can rotate. The adjusting part sleeves the outer side of the adjusting screw rod and is in threaded connection with the adjusting screw rod; the first end of the adjusting screw rod can extend to the inner cavity of the supporting steel pipe, and the second end of the adjusting screw rod is provided with a clamping piece; the fixing piece is arranged on the outer side of the adjusting piece in a sleeving mode, is in threaded connection with the adjusting piece and is used for adjusting the adjusting piece to be in a loosened state or a tightened state so as to loosen or abut against the adjusting screw rod. The temporary supporting and rapid positioning of the steel arch are realized, the temporary supporting and rapid positioning device can be recycled in different units of steel arches, the construction is simplified, and the rapid and reliable supporting of the steel arches is realized.

Description

Technical Field

[0001] This utility model relates to the field of highway (municipal) large-section excavation tunnel engineering, specifically to a rapid temporary support device for the initial support steel arch frame of a tunnel. Background Technology

[0002] During tunnel construction, the installation and temporary support positioning of steel arch frames are typically done manually. Specifically, in actual construction, the steel arch frames need to be positioned and connected segment by segment. Before the connection of each segment is completed, temporary support positioning of the steel arch frame is necessary. However, this temporary support positioning process often requires multiple workers to work together to lift and fix the steel arch frame. This method of operation requires a large labor input, and due to the significant weight of the steel arch frame, manually adjusting it is extremely laborious, posing a considerable safety risk and potentially leading to worker injuries or other accidents. Utility Model Content

[0003] To address the challenges of difficult operation, high labor input, and significant risks encountered by construction workers during the positioning and connection of different steel arch frames in the initial support of large-section highway (municipal) tunnels, this utility model provides a rapid temporary support device for the initial support steel arch frame of a tunnel. This device enables rapid temporary support of the steel arch frame and can be reused in different steel arch frame units, simplifying the construction process.

[0004] This embodiment proposes a rapid temporary support device for the initial support steel arch frame of a tunnel, including: a support steel pipe, an adjusting screw, an adjusting component, a fixing component, a snap-fit ​​component, and a support component;

[0005] The first end of the supporting steel pipe is connected to the supporting member, and the second end of the supporting steel pipe is rotatably connected to the adjusting member, and the adjusting member can rotate.

[0006] The adjusting component is sleeved on the outside of the adjusting screw and is threadedly connected to the adjusting screw;

[0007] The first end of the adjusting screw can extend into the inner cavity of the supporting steel pipe, and the second end of the adjusting screw is provided with the snap-fit ​​component;

[0008] The fixing member is sleeved on the outside of the adjusting member and threadedly connected to the adjusting member, and is used to adjust the adjusting member to be in a loose or tight state, so as to loosen or tighten the adjusting screw.

[0009] Optionally, the adjusting member includes a fixing part and a tightening part connected to the fixing part;

[0010] The fixing part abuts against the first end of the supporting steel pipe;

[0011] The fixing part is threadedly connected to the adjusting screw;

[0012] The tightening part is elastic, and the outer side of the tightening part is threadedly connected to the fastener;

[0013] The fastener is used to loosen or tighten the tightening part so that the adjusting part is in a loose or tightened state.

[0014] Optionally, the tightening part includes at least two elastic plates connected to the fixing part, and the elastic plates surround the outside of the adjusting screw;

[0015] The fastener is sleeved on the outside of the elastic sheet and threadedly connected to the elastic sheet;

[0016] When the elastic sheet is in the released state, there is a gap between adjacent elastic sheets;

[0017] When the elastic sheet is in the tightened state, adjacent elastic sheets abut against each other.

[0018] Optionally, the rapid temporary support device for the initial support steel arch of the tunnel also includes at least one twist handle;

[0019] The twist handle is connected to the outside of the fixed part.

[0020] Optionally, at least two of the aforementioned twist handles are provided;

[0021] Multiple of the aforementioned twist handles are spaced apart and connected to the outside of the fixed part.

[0022] Optionally, the twist handle is provided with a grip.

[0023] Optionally, the rapid temporary support device for the initial support steel arch of the tunnel also includes multiple movable pins connected to the support steel pipe;

[0024] The adjusting component is provided with multiple mounting cavities at circumferential intervals, and each mounting cavity corresponds to a movable pin.

[0025] The free ends of the plurality of said movable pins extend into the corresponding mounting cavities.

[0026] Optionally, the gap between the movable pin and the mounting cavity is less than 0.2 mm.

[0027] Optionally, the snap-fit ​​component includes a first connecting plate and two first snap-fit ​​plates;

[0028] The two first snap-fit ​​plates are respectively connected to both ends of the first connecting plate and can be snapped into the steel arch frame;

[0029] The first connecting plate is connected to the second end of the adjusting screw.

[0030] Optionally, the support member includes a second connecting plate and two second snap-fit ​​plates;

[0031] The two second snap-fit ​​plates are respectively connected to both ends of the second connecting plate;

[0032] The second connecting plate is connected to the first end of the supporting steel pipe.

[0033] The beneficial effects of the above-mentioned technical solutions provided in the embodiments of this utility model include at least the following:

[0034] This utility model provides a rapid temporary support device for the initial support steel arch frame of a tunnel. An adjusting component is rotatably connected to the second end of the supporting steel pipe and sleeved on the outside of an adjusting screw. The adjusting component and the adjusting screw are threaded together. A locking component is provided at the second end of the adjusting screw, which can connect to the steel arch frame. The rotation of the adjusting component drives the adjusting screw to move up and down, thereby achieving precise adjustment of the height of the locking component. This allows the locking component to be positioned at a suitable height to accommodate steel arch frames of different heights, offering wide application scenarios and high flexibility. It also enables rapid positioning of the temporary support for the steel arch frame and can be reused in different steel arch frame units, simplifying construction and achieving rapid and reliable support for the steel arch frame.

[0035] By fitting a fixing element onto the outside of the adjusting element and threading them together, when the fixing element is tightened, the adjusting element and the fixing element work together to press against the adjusting screw, preventing it from moving. When the fixing element is loosened, the adjusting element is in the loosened state, and the adjusting screw is released. By rotating the fixing element, the tightness of the adjusting element can be easily adjusted, facilitating quick fixing or loosening of the adjusting screw.

[0036] This invention provides an embodiment of which other features and advantages will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0037] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0038] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0039] Figure 1 This is a structural schematic diagram of the rapid temporary support device for the tunnel initial support steel arch frame provided in this embodiment of the utility model;

[0040] Figure 2 for Figure 1 Enlarged view of section A;

[0041] Figure 3 This is a cross-sectional view of the adjusting member provided in the embodiment of this utility model;

[0042] Explanation of reference numerals in the attached figures:

[0043] 1. Supporting steel pipe; 2. Adjusting screw; 3. Adjusting component; 31. Fixing part; 32. Tightening part; 321. Elastic sheet; 4. Fixing component; 5. Snap-fit ​​component; 51. First connecting plate; 52. First snap-fit ​​plate; 6. Support component; 7. Twist handle. Detailed Implementation

[0044] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0045] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "far," "near," "front," and "rear," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] Example

[0048] See Figure 1This application provides a rapid temporary support device for a tunnel initial support steel arch frame. The support device includes: a support steel pipe 1, an adjusting screw 2, an adjusting component 3, a fixing component 4, a snap-fit ​​component 5, and a support component 6. The support steel pipe 1, as the main support structure, is responsible for bearing the weight and pressure of the steel arch frame. The support steel pipe 1 must have a wall thickness greater than 3.5mm to avoid insufficient welding due to thinness, while ensuring the overall support strength of the support device. The first end of the support steel pipe 1 is connected to the support component 6 for fixing or connecting to various working platforms of the tunnel trolley, ensuring the stability and reliability of the entire support device. The second end of the support steel pipe 1 is rotatably connected to the adjusting component 3, and the adjusting component 3 can rotate.

[0049] The adjusting screw 2 is a long rod with external threads. Its first end extends into the inner cavity of the supporting steel pipe 1, allowing it to move up and down within the pipe. The second end of the adjusting screw 2 is equipped with a locking member 5, which has a connection structure that matches the steel arch frame, enabling a reliable connection and ensuring the entire support device firmly supports the steel arch frame. The locking member 5 may use threaded connections, slotted connections, or other quick-locking connections to connect to the steel arch frame for easy installation and disassembly.

[0050] Adjusting component 3 is sleeved on the outside of adjusting screw 2 and threadedly connected to adjusting screw 2. The rotation of adjusting component 3 can drive adjusting screw 2 to move up and down, thereby achieving precise adjustment of the height of clamping component 5, so that clamping component 5 is at a suitable height to adapt to steel arch frames of different heights.

[0051] The fixing member 4 is sleeved on the outside of the adjusting member 3 and threadedly connected to it. The fixing member 4 is used to adjust the tightness of the adjusting member 3. When the fixing member 4 is tightened, the adjusting member 3 is in a tightened state, and the adjusting member 3 and the fixing member 4 cooperate to press against the adjusting screw 2, preventing the adjusting screw 2 from moving. When the fixing member 4 is loosened, the adjusting member 3 is in a loosened state, and the adjusting screw 2 is released. By rotating the fixing member 4, the tightness of the adjusting member 3 can be easily adjusted, facilitating quick fixing or loosening of the adjusting screw 2.

[0052] In use, the first end of the supporting steel pipe 1 is connected to each level of the tunnel trolley's working platform via the supporting member 6. According to the height requirements of the steel arch frame, the adjusting member 3 is rotated, causing it to rotate and drive the adjusting screw 2 to move up and down until the locking member 5 reaches the appropriate height. The fixing member 4 is tightened, putting the adjusting member 3 in a tightened state and pressing against the adjusting screw 2 to prevent it from moving. The locking member 5 is then connected to the steel arch frame, achieving rapid installation of the entire support device. The cooperation between the adjusting member 3 and the adjusting screw 2 allows the height of the entire support device to match the height of the steel arch frame, making it suitable for steel arch frames of different heights, with wide application scenarios and high flexibility. The clever cooperation between the fixing member 4 and the adjusting member 3 further stabilizes the position of the adjusting screw 2, ensuring high reliability and stability. This embodiment can solve the problems of difficult operation, high labor input, and high risk in the initial support positioning and connection of different steel arch frames in large-section highway (municipal) tunnel excavation. It realizes the rapid positioning of temporary support for steel arch frames, which can be used repeatedly in different steel arch frame units, simplifying construction and achieving rapid and reliable support for steel arch frames.

[0053] In one specific embodiment, see [reference] Figure 1 The adjusting component 3 includes a fixing part 31 and a tightening part 32 connected to the fixing part 31. The fixing part 31 is the main supporting part of the adjusting component 3, and it directly abuts against the first end of the supporting steel pipe 1. The fixing part 31 is connected to the adjusting screw 2 by a threaded connection. Through the threaded connection, when the entire adjusting component 3 rotates, the adjusting component 3 can move the adjusting screw 2 up and down, thereby adjusting the adjusting screw 2 to achieve the purpose of adjusting the height of the locking component 5. The tightening part 32 is elastic, allowing for a certain degree of deformation and recovery when subjected to external force. The outer side of the tightening part 32 is threadedly connected to the fixing component 4. When the fixing part 4 is tightened, the tightening part 32 can be tightened, that is, the tightening part 32 is compressed and tightened, so that the adjusting part 3 is in a tightened state and can press against the adjusting screw 2; when the fixing part 4 is loosened, the fixing part 4 loosens the tightening part 32, the tightening part 32 is released, the adjusting part 3 is in a loosened state, the adjusting screw 2 is no longer subject to axial limitation, and then the height of the adjusting screw 2 can be adjusted by the fixing part 31.

[0054] In one specific embodiment, see [reference] Figure 2 and Figure 3The tightening part 32 includes at least two elastic plates 321 connected to the fixing part 31. These elastic plates 321 have a certain degree of flexibility and resilience, and can deform under external force and return to their original state after the external force is removed. The elastic plates 321 surround the outside of the adjusting screw 2, and the fixing member 4 is sleeved on the outside of the elastic plates 321 and threadedly connected to the elastic plates 321. The tightening degree of the elastic plates 321 is adjusted by rotating the fixing member 4. Specifically, when the fixing member 4 is tightened, the elastic plates 321 are in a tightened state, adjacent elastic plates 321 abut against each other, and the elastic plates 321 are in close contact with each other, pressing against the adjusting screw 2 to clamp the adjusting screw 2; when the fixing member 4 is loosened, the elastic plates 321 are in a loosened state, and there is a gap between adjacent elastic plates 321. The elastic plates 321 no longer provide a clamping force for the adjusting screw 2, allowing the adjusting screw 2 to have a certain amount of room for movement, so as to ensure that the adjusting screw 2 can move up and down. This embodiment provides a simple and effective adjustment and fixing mechanism by combining the deformability of the elastic sheet 321 with the precise adjustability of the threaded connection between the elastic sheet 321 and the fastener 4.

[0055] In one specific embodiment, see [reference] Figure 1 The support device also includes at least one twist handle 7, which is connected to the outside of the fixed part 31. This allows the operator to directly grip the handle 7 and apply torque to achieve rotation of the entire adjusting component 3. The twist handle 7 is securely connected to the outside of the fixed part 31 via threads, snaps, pins, or other means, ensuring it will not accidentally fall off during operation while providing sufficient torque transmission capacity. By incorporating the twist handle 7, the ease of operation of the entire support device is significantly improved. Operators can easily adjust the support device without tools, which is particularly important for scenarios requiring frequent adjustments or use in different environments.

[0056] In one specific embodiment, see [reference] Figure 1 The device is equipped with at least two twist handles 7, and multiple twist handles 7 are spaced apart and connected to the outside of the fixing part 31. The multiple twist handles 7 provide more adjustment points for the support device, making it easier for multiple construction workers to adjust at the same time or for one construction worker to adjust with both hands, thereby improving the efficiency of adjustment and reducing unnecessary trouble and delays in the operation process.

[0057] In one specific embodiment, see [reference] Figure 1 The handle 7 is provided with a grip (not shown in the figure). The grip has an ergonomic shape and size to ensure that the operator can comfortably and stably hold the handle 7 and apply torque during operation, thereby improving ease of operation and efficiency.

[0058] In one specific embodiment, the grip portion is textured or surface-treated to increase the friction of the grip portion and improve stability and safety during operation.

[0059] In one specific embodiment, see [reference] Figure 1 The support device also includes multiple (not shown in the figure) connected to the support steel pipe 1. The adjusting member 3 is provided with multiple mounting cavities (not shown in the figure) at circumferential intervals, and each mounting cavity corresponds to a movable pin. The shape and size of the mounting cavity should match the movable pin to ensure that the free ends of the multiple movable pins extend to the corresponding mounting cavities. By setting the movable pins, the adjusting member 3 is rotatably connected to the support steel pipe 1, enabling the adjusting member 3 to rotate.

[0060] In this embodiment, the steel pipe has no internal threads. When the handle 7 is turned and the adjusting screw 2 is moved up and down, the adjusting component 3 will not move with the adjusting screw 2, thus avoiding inconvenience in use and improving the flexibility and convenience of the support device.

[0061] In one specific embodiment, the gap between the movable pin and the mounting cavity is less than 0.2 mm to avoid large shaking when the adjusting member 3 rotates, thereby ensuring the stability and reliability of the support device.

[0062] In one specific embodiment, see [reference] Figure 1 The snap-fit ​​component 5 includes a first connecting plate 51 and two first snap-fit ​​plates 52. The two first snap-fit ​​plates 52 are respectively connected to both ends of the first connecting plate 51 and can snap onto the steel arch frame to support and position it. The shape and size of the first snap-fit ​​plates 52 should be determined according to the cross-sectional shape and size of the steel arch frame to ensure they fit tightly against the frame and provide sufficient support. The first connecting plate 51 should have sufficient strength and rigidity to ensure the stability and reliability of the connection between the snap-fit ​​component 5 and the steel arch frame. The first connecting plate 51 is connected to the second end of the adjusting screw 2, allowing the adjusting screw 2 to adjust the height of the entire snap-fit ​​component 5.

[0063] In one specific embodiment, see [reference] Figure 1The support component 6 can adopt the same structure as the snap-fit ​​component 5, that is, the support component 6 consists of a second connecting plate (not shown in the figure) and two second snap-fit ​​plates (not shown in the figure). It connects to the various working platforms of the tunnel trolley through the two second connecting plates, and the second connecting plates connect to the first end of the supporting steel pipe 1, thus connecting the entire support component 6 to the first end of the supporting steel pipe 1. Since the support component 6 and the snap-fit ​​component 5 have the same structure, they can be processed using the same molds or production lines, reducing production costs, simplifying the design and manufacturing process, and improving production efficiency. The identical structure means that there is no need to distinguish between the support component 6 and the snap-fit ​​component 5 during installation, simplifying the installation steps, reducing the error rate during installation, and improving installation efficiency.

[0064] This utility model features a simple structural processing procedure. By turning the torsion handle, the adjusting component rotates, controlling the up-and-down movement of the adjusting screw to adjust the locking component to a suitable height. Tightening the fixing component secures the position of the adjusting screw, and the locking component is then inserted into the steel arch frame, achieving rapid support and positioning of the steel arch frame. After the steel arch frame is installed, turning the torsion handle retrieves the adjusting screw and locking component. This process is repeated to support and position the next unit of steel arch frame. This design achieves the recycling of the support device while ensuring the installation quality of the steel arch frame. The construction operation is simple, effectively solving the problem of steel arch frame installation quality in actual construction.

[0065] For example, a steel pipe with an outer diameter of 42mm and a wall thickness of 3.5mm is used as the supporting steel pipe. The adjusting screw is made of precision-rolled threaded steel with an outer diameter of 25mm. The fixing part of the adjusting component uses a nut that matches the adjusting screw. The tightening part of the adjusting component uses three elastic plates, which are connected to the fixing part. A threaded steel bar with a diameter of 16mm is connected to the outside of the fixing part as a torque handle. The first connecting plate uses C20 threaded steel bar, and the two first snap-fit ​​plates use C16 threaded steel bar. The installation process may include the following steps:

[0066] Step S1: Connect two first snap-fit ​​plates to both sides of the first connecting plate to form a snap-fit ​​component;

[0067] Step S2: Connect two second snap-fit ​​plates to both sides of the second connecting plate to form a support member;

[0068] Step S3: Connect the snap-fit ​​connector to the second end of the adjusting screw;

[0069] Step S4: Connect the support to the first end of the support steel pipe;

[0070] Step S5: Fix the twist handle to the fixing part of the adjusting component;

[0071] Step S6: Rotate the adjusting component to the first end of the supporting steel pipe via the movable pin;

[0072] Step S7: Pass the adjusting screw through the fixing member, so that the first end of the adjusting screw extends into the inner cavity of the supporting steel pipe.

[0073] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. This disclosure is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims. Thus, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model is also intended to include these modifications and variations.

Claims

1. A kind of tunnel primary support steel arch quick temporary support device, it is characterized in that, The utility model relates to a steel arch support device, including: Support steel pipe, adjusting screw rod, adjusting part, fixing part, clamping part and support part; The first end of the support steel pipe is connected with the support part, the second end of the support steel pipe is rotationally connected with the adjusting part, and the adjusting part can rotate by itself; The adjusting part is sleeved outside the adjusting screw rod and is in threaded connection with the adjusting screw rod; The first end of the adjusting screw rod can extend to the inner cavity of the support steel pipe, and the second end of the adjusting screw rod is provided with the clamping part; The fixing part is sleeved outside the adjusting part and is in threaded connection with the adjusting part, and is used for adjusting the adjusting part to be in a loosened state or a tightened state to loosen or tighten the adjusting screw rod.

2. The rapid temporary support device for the primary support steel arch of the tunnel as claimed in claim 1, wherein, The adjusting part includes a fixed part and a tightening part connected with the fixed part; The fixed part abuts against the first end of the support steel pipe; The fixed part is in threaded connection with the adjusting screw rod; The tightening part has elasticity, and the outside of the tightening part is in threaded connection with the fixing part; The fixing part is used for loosening or tightening the tightening part to make the adjusting part be in a loosened state or a tightened state.

3. The rapid temporary support device for the primary support steel arch of the tunnel as claimed in claim 2, wherein, The tightening part includes at least two elastic sheets connected with the fixed part, and the elastic sheets enclose the outside of the adjusting screw rod; The fixing part is sleeved outside the elastic sheets and is in threaded connection with the elastic sheets; When the elastic sheets are in a loosened state, adjacent elastic sheets have gaps therebetween; When the elastic sheets are in a tightened state, adjacent elastic sheets abut against each other.

4. The rapid temporary support device for the primary support steel arch of the tunnel as claimed in claim 2 or 3, characterized in that, At least one twist handle is further included; The twist handle is connected to the outside of the fixed part.

5. The rapid temporary support device for the primary support steel arch of the tunnel as claimed in claim 4, wherein, At least two twist handles are provided; Multiple twist handles are spaced apart and connected to the outside of the fixed part.

6. The rapid temporary support device for the primary support steel arch of the tunnel as claimed in claim 5, wherein, The twist handle is provided with a holding part.

7. The rapid temporary support device for the primary support steel arch of the tunnel as claimed in claim 1 or 6, wherein, Multiple movable pins connected with the support steel pipe are further included; The adjusting part is circumferentially spaced apart to provide multiple installation cavities, and the installation cavities are one-to-one corresponding to the movable pins; The free ends of the multiple movable pins extend to the corresponding installation cavities.

8. The rapid temporary support device for initial support of steel arches of tunnels according to claim 7, characterized in that, The gap between the movable pin and the installation cavity is less than 0.2 mm.

9. The rapid temporary support device for the primary support steel arch of the tunnel as claimed in claim 1, wherein, The clamping part includes a first connecting plate and two first clamping plates; The two first clamping plates are respectively connected to the two ends of the first connecting plate and can be clamped with a steel arch; The first connecting plate is connected with the second end of the adjusting screw rod.

10. The rapid temporary support device for the primary support steel arch of the tunnel as claimed in claim 1, wherein, The support part includes a second connecting plate and two second clamping plates; The two second clamping plates are respectively connected to the two ends of the second connecting plate; The second connecting plate is connected with the first end of the support steel pipe.

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