Wind belt protection device and secondary lining trolley

Abstract

The utility model relates to the technical field of tunnel construction equipment, in particular to a wind belt protection device and a secondary lining trolley. The wind belt protection device comprises a longitudinal support arranged on a foundation frame of the secondary lining trolley; the protection rings are arranged on the longitudinal support, the multiple protection rings are evenly distributed at intervals along the longitudinal support, and a wind belt passing through the secondary lining trolley sequentially penetrates through the protection rings; the protection ring comprises reinforcing steel bars forming a ring shape in an enclosing mode and a roller arranged on the reinforcing steel bars in a sleeving mode, and the roller has the freedom degree of rotating around the axis of the roller. The scheme is used for overcoming the defects of construction interruption and potential safety hazards caused by the fact that a ventilation wind belt is easily damaged when the secondary lining trolley moves in the prior art, and the tunnel construction continuity and the stable operation of a ventilation system are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction equipment, in particular to a wind belt protection device and a secondary lining trolley. Background Art

[0002] In the construction of high-speed railway tunnels, the secondary lining trolley is responsible for the engineering task of the secondary lining of the tunnel, but its movement often affects the tunnel ventilation system.

[0003] In a narrow and complex construction environment, the trolley can easily touch the air belt accidentally, causing damage to it, interrupting ventilation, and seriously affecting the health and safety of construction workers and the continuity of construction. As the lifeline for maintaining tunnel air quality, once the air belt is damaged, it not only endangers the safety of personnel, but also forces the construction site to temporarily stop work until it is repaired or replaced.

[0004] Traditional construction methods require that the secondary lining trolley must be stopped when moving, which also slows down the construction pace and increases unnecessary downtime. Utility Model Content

[0005] The utility model provides a wind belt protection device and a second lining trolley, which are used to solve the defects in the prior art that the ventilation wind belt is easily damaged when the second lining trolley moves, resulting in construction interruption and safety hazards, and ensure the continuity of tunnel construction and the stable operation of the ventilation system.

[0006] The utility model provides a wind belt protection device, comprising: a longitudinal support, which is arranged on a basic frame of a secondary lining trolley; a protection ring, which is arranged on the longitudinal support, and a plurality of the protection rings are evenly spaced and distributed along the longitudinal support, and the wind belt passing through the secondary lining trolley passes through the protection rings in sequence; the protection ring comprises steel bars formed in a ring shape and a roller sleeved on the steel bars, and the roller has the freedom to rotate around its own axis.

[0007] According to the wind belt protection device provided by the utility model, the roller is a steel pipe.

[0008] According to a wind belt protection device provided by the utility model, the inner diameter of the roller is larger than the outer diameter of the steel bar.

[0009] According to a wind belt protection device provided by the utility model, the longitudinal support includes a plurality of longitudinal support rods; the longitudinal support rods are welded or fixed to the steel bars through connecting pieces, and the plurality of longitudinal support rods are evenly distributed in the circumferential direction of the protection ring and are parallel to each other.

[0010] According to a wind belt protection device provided by the utility model, the steel bar includes a straight portion; the roller is rotatably sleeved on the straight portion.

[0011] According to a wind belt protection device provided by the utility model, the steel bar includes a plurality of straight portions sleeved with the roller and arc portions located between the straight portions; the plurality of straight portions are located at least above, below and on both sides of the wind belt in a state of use.

[0012] According to a wind belt protection device provided by the utility model, a plurality of the straight portions are connected end to end to form a ring structure of the steel bar; the connection point between the longitudinal support and the protection ring is located at the connection position of the adjacent straight portions.

[0013] According to a wind belt protection device provided by the utility model, a bearing member is arranged between the straight portion and the inner surface of the drum, so that the drum can rotate around the axis of the straight portion under the support of the bearing member.

[0014] According to a wind belt protection device provided by the utility model, between any of the straight portions and the roller sleeved on the straight portion, the number of the bearing members is at least two.

[0015] The utility model also provides a secondary lining trolley, which is provided with a wind belt protection device as described in any one of the above embodiments.

[0016] The wind belt protection device and the secondary lining trolley provided by the utility model realize effective protection of the wind belt by arranging a longitudinal bracket on the basic frame of the secondary lining trolley and evenly distributing a plurality of protection rings on the longitudinal bracket. The protection ring is designed to include steel bars in a ring shape and a roller sleeved on the outside of the steel bars. The roller has the ability to rotate, so as to ensure that the friction between the wind belt and the protection device is minimized when the secondary lining trolley moves. Through the above structure, the utility model effectively solves the potential damage to the wind belt caused by the movement of the secondary lining trolley, ensures the continuous operation of the ventilation system during construction, avoids the shutdown caused by the damage of the wind belt, and thus improves the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a structural schematic diagram of the secondary lining trolley provided by the utility model.

[0019] Figure 2 It is a partial structural schematic diagram of the wind belt protection device provided by the utility model.

[0020] Figure 3 It is a partial perspective structural schematic diagram of the wind belt protection device provided by the utility model.

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the wind belt protection device provided by the utility model.

[0022] Reference numerals:

[0023] 100. Basic frame; 110. Longitudinal support; 111. Longitudinal support rod; 120. Protection ring; 121. Steel bar; 122. Roller; 123. Bearing. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. It should also be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0026] The utility model uses the wind belt protection device to enable the second lining trolley to move without stopping the wind, thereby preventing damage to the wind belt and causing construction on site to be suspended.

[0027] Combine the following Figure 1 , Figure 2 , Figure 3 and Figure 4 The specific implementation manner of the wind belt protection device and the secondary lining trolley of the utility model is described.

[0028] like Figure 1 , Figure 2 As shown, the utility model provides a wind belt protection device, comprising: a longitudinal bracket 110, which is arranged on the basic frame 100 of the secondary lining trolley; a protection ring 120, which is arranged on the longitudinal bracket 110, and a plurality of protection rings 120 are evenly spaced along the longitudinal bracket 110, and the wind belt passing through the secondary lining trolley passes through the protection rings 120 in sequence. The protection ring 120 includes a steel bar 121 in a ring shape and a roller 122 sleeved on the steel bar 121, and the roller 122 has the freedom to rotate around its own axis. The wind belt protection device realizes effective protection of the wind belt by arranging the longitudinal bracket 110 on the basic frame 100 of the secondary lining trolley and evenly distributing a plurality of protection rings 120 on the longitudinal bracket 110.

[0029] Specifically, the protection ring 120 is designed to include a ring-shaped steel bar 121 and a roller 122 sleeved on the outside of the steel bar 121. The roller 122 has the ability to rotate around its own axis, which can ensure that the friction between the wind belt and the protection device is minimized when the second lining trolley moves.

[0030] When the secondary lining trolley moves in the tunnel, the wind belt passes through these protective rings 120, and the rotation characteristics of the roller 122 allow the wind belt to slide relatively when subjected to force, rather than directly bearing friction, thereby significantly reducing the risk of damage to the wind belt due to scratches. In addition, the use of the roller 122 also reduces the chance of direct contact between the wind belt and the hard structure (rebar 121), improving the durability of the wind belt and the reliability of the entire ventilation system.

[0031] Through this structure, the utility model effectively solves the potential damage to the air belt caused by the movement of the secondary lining trolley, ensures the continuous operation of the ventilation system during construction, avoids shutdowns caused by damage to the air belt, thereby improving construction efficiency, ensuring the health and safety of construction personnel, and reducing maintenance costs and construction risks.

[0032] According to a wind belt protection device provided by the utility model, the roller 122 is preferably a steel pipe. During the movement of the secondary lining trolley, as the wind belt moves with the movement of the trolley, the friction between the wind belt and the steel pipe will cause the steel pipe to rotate around its own axis. This rotational movement of the steel pipe can significantly reduce the friction between the wind belt and the fixed steel bar 121, thereby effectively preventing the wind belt from being worn or torn due to direct contact with the hard steel bar 121 during movement. The smooth surface and rotation ability of the steel pipe provide additional protection for the wind belt and reduce the possibility of damage to the wind belt.

[0033] According to a wind belt protection device provided by the utility model, the inner diameter of the roller 122 is larger than the outer diameter of the steel bar 121, ensuring that there is enough space between the two, and avoiding the roller 122 from getting stuck or rubbing against the steel bar 121 during rotation. In a preferred embodiment, the difference between the inner diameter of the roller 122 and the outer diameter of the steel bar 121 can be set to be more than 10 mm. This gap not only prevents the jamming phenomenon, but also leaves space for installing rotation auxiliary mechanisms such as bearings. The addition of bearings further reduces the rotation resistance, so that the roller 122 can rotate more smoothly around its axis when subjected to the friction force of the wind belt, thereby effectively protecting the wind belt from wear. For example, in terms of specific size, the steel bar 121 can be selected with a diameter of 22 mm, while the roller 122 uses a steel pipe with an inner diameter of 32 mm.

[0034] According to a wind belt protection device provided by the utility model, the longitudinal support 110 preferably includes a plurality of longitudinal support rods 111. The longitudinal support rods 111 are welded or fixed to the steel bars 121 through connectors, and the plurality of longitudinal support rods 111 are evenly distributed in the circumferential direction of the protection ring 120 and are parallel to each other. The plurality of longitudinal support rods 111 are evenly distributed in the circumferential direction of the protection ring 120 and are parallel to each other. Such a layout not only enhances the stability of the overall structure, but also optimizes the connection method between the wind belt protection device and the secondary lining foundation frame 100.

[0035] Specifically, the longitudinal support rod 111 serves as a connecting bridge, which is firmly connected to the base frame 100 of the secondary lining trolley on the one hand, and supports and positions the protection ring 120 on the other hand, forming the installation foundation of the wind belt protection device. By evenly distributing multiple protection rings 120 between multiple longitudinal support rods 111, the wind belt forms a continuous and protected extension path along the length direction of the longitudinal support rod 111 when passing through these protection rings 120.

[0036] like Figure 4 As shown, according to a wind belt protection device provided by the utility model, the steel bar 121 includes a straight portion; the roller 122 is rotatably mounted on the straight portion. The straight steel bar 121 segment provides a solid and stable foundation for the rotation of the roller 122, ensuring that the roller 122 can smoothly rotate around its axis without deflection or jamming when subjected to the friction of the wind belt. The linear structure of the straight portion helps to maintain the coaxiality of the roller 122, so that it maintains a good dynamic balance during rotation, reduces vibration and noise, and increases the overall stability and service life of the device. At the same time, it is also convenient to add bearings or other drag reduction components between the roller 122 and the straight portion to further optimize the rotation performance of the roller 122.

[0037] According to a wind belt protection device provided by the utility model, the steel bar 121 includes a plurality of straight portions on which rollers 122 are sleeved and an arc-shaped portion located between the straight portions. The plurality of straight portions are located at least above, below and on both sides of the wind belt in the use state. In practical applications, these straight portions form a surrounding protection structure around the wind belt to ensure that when the wind belt passes through the protection ring 120, at least the rollers 122 are in contact with the wind belt above, below and on both sides, rather than directly contacting the steel bar 121. By configuring the rollers 122 in various key directions of the wind belt, the wind belt can be fully protected even under more violent movement conditions, and the rotation characteristics of the rollers 122 allow the wind belt to slide on its surface instead of generating abrasive friction. At the same time, through the transition of the arc-shaped portion, the flexibility and adaptability of the entire steel bar 121 structure are ensured.

[0038] In another embodiment, according to a wind belt protection device provided by the utility model, a plurality of straight sections are connected end to end to form a ring structure of steel bars 121; the connection point between the longitudinal bracket 110 and the protection ring 120 is located at the connection position of the adjacent straight sections. This structure allows each straight section to be used as a basis for setting a rotatable roller 122, ensuring that the wind belt can be contacted and protected by the roller 122 in all directions when passing through the protection ring 120, thereby significantly reducing the friction between the wind belt and the steel bars 121 and protecting the wind belt from damage. Among them, the ring structure of the steel bars 121 not only provides a stable support, but also the connection position of the adjacent straight sections (the steel bars 121 are exposed outside the roller 122), that is, the corner of the steel bars 121, can be used as a connection point with the longitudinal bracket 110.

[0039] Preferably, the number of straight sections constituting the annular structure can be adjusted according to actual needs and space constraints. For example, in some application scenarios, the protection ring 120 can present a variety of polygonal structures such as a decagon, an octagon or a hexagon.

[0040] like Figure 3 and Figure 4 As shown, according to a wind belt protection device provided by the utility model, a bearing member 123 is provided between the straight portion and the inner surface of the roller 122, so that the roller 122 can rotate around the axis of the straight portion under the support of the bearing member 123. In a preferred embodiment, the selected bearing member 123 is a deep groove ball bearing. With the support of the deep groove ball bearing, the roller 122 can achieve low-friction rotation when it is subjected to the friction brought by the wind belt, which significantly improves the rotation performance of the roller 122 and the durability of the entire wind belt protection device.

[0041] According to a wind belt protection device provided by the utility model, there are at least two bearing members 123 between any straight section and the roller 122 sleeved on the straight section. The configuration of double or multiple bearings can provide more balanced and stable rotation support, ensuring that the roller 122 can still maintain a smooth and low-friction rotation state when subjected to the friction of the wind belt. The use of two or more bearing members 123 not only disperses the load and reduces the wear rate of a single bearing member 123, but also improves the accuracy and stability of the rotation of the roller 122 through their mutual synergy.

[0042] The second lining trolley provided by the present invention is described below. The second lining trolley described below and the wind belt protection device described above can be referred to each other.

[0043] like Figure 1 As shown, the utility model also provides a secondary lining trolley, which is provided with a wind belt protection device as in any of the above embodiments, so as to achieve effective protection of the wind belt and efficient and safe operation of the secondary lining trolley.

[0044] In a preferred embodiment, the secondary lining trolley includes a base frame 100, which not only supports the entire trolley structure, but also serves as a mounting platform for the wind belt protection device. The wind belt protection device is composed of a longitudinal bracket 110 and a plurality of protection rings 120. The longitudinal bracket 110 is firmly fixed to the base frame 100, ensuring the stability and reliability of the device.

[0045] The protection ring 120 is composed of a ring-shaped steel bar 121 and a roller 122 sleeved on the steel bar 121. The roller 122 is preferably a steel pipe, and its inner diameter is larger than the outer diameter of the steel bar 121. The two are connected by at least two bearings 123 to ensure that the roller 122 can rotate smoothly and effectively reduce the friction between the wind belt and the steel bar 121. The straight and arc-shaped parts of the steel bar 121 structure ensure that when the wind belt passes through the protection ring 120, it is contacted by the roller 122 at least on the top, bottom and both sides, forming all-round protection.

[0046] The multiple longitudinal support rods 111 of the longitudinal bracket 110 are evenly distributed and fixed on the steel bars 121, which not only enhances the stability of the structure, but also ensures the tight connection between the wind belt protection device and the secondary lining foundation frame 100. The multiple protection rings 120 are evenly distributed along the length direction of the longitudinal support rods 111, providing a continuous and protected path for the wind belt.

[0047] The above structure not only improves the protection effect of the wind belt and reduces the risk of damage to the wind belt during the movement of the trolley, but also ensures the efficient operation of the second lining trolley in tunnel construction, avoiding construction interruptions caused by wind belt damage, thereby improving the progress and safety of the entire tunnel construction project. The second lining trolley of the utility model provides an innovative and practical solution for high-speed railway tunnel construction by integrating an optimized wind belt protection device.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or modes described in this specification and the features of the different embodiments or modes, without contradiction.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A wind belt protection device, characterized in that: include: A longitudinal support (110) is arranged on a base frame (100) of the secondary lining trolley; A protection ring (120) is arranged on the longitudinal support (110), and a plurality of the protection rings (120) are evenly spaced and distributed along the longitudinal support (110), and the wind belt passing through the secondary lining trolley passes through the protection rings (120) in sequence; The protection ring (120) comprises a steel bar (121) formed in a ring shape and a roller (122) sleeved on the steel bar (121); the roller (122) has the freedom to rotate around its own axis.

2. The wind belt protection device according to claim 1, characterized in that: The roller (122) is a steel pipe.

3. The wind belt protection device according to claim 1, characterized in that: The inner diameter of the roller (122) is greater than the outer diameter of the steel bar (121).

4. The wind belt protection device according to claim 1, characterized in that: The longitudinal support (110) comprises a plurality of longitudinal support rods (111); The longitudinal support rods (111) are welded or fixed to the steel bars (121) via connecting pieces, and a plurality of the longitudinal support rods (111) are evenly distributed in the circumferential direction of the protection ring (120) and are parallel to each other.

5. The wind belt protection device according to any one of claims 1 to 4, characterized in that: The steel bar (121) comprises a straight portion; The roller (122) is rotatably sleeved on the straight portion.

6. The wind belt protection device according to claim 5, characterized in that: The steel bar (121) comprises a plurality of straight portions sleeved with the rollers (122) and arc-shaped portions located between the straight portions; The plurality of straight portions are respectively located at least above, below and on both sides of the air belt when in use.

7. The wind belt protection device according to claim 5, characterized in that: A plurality of the straight portions are connected end to end to form a ring-shaped structure of the steel bar (121); The connection point between the longitudinal support (110) and the protection ring (120) is located at the connection position of the adjacent straight sections.

8. The wind belt protection device according to claim 5, characterized in that: A bearing member (123) is provided between the straight portion and the inner surface of the roller (122), so that the roller (122) can rotate around the axis of the straight portion under the support of the bearing member (123).

9. The wind belt protection device according to claim 8, characterized in that: Between any of the straight portions and a roller (122) sleeved on the straight portion, the number of the bearing members (123) is at least two.

10. A secondary lining trolley, characterized in that: A wind belt protection device as described in any one of claims 1 to 9 is provided.

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