Mounting structure of underground cavern top arch rail type hoisting equipment

Abstract

The utility model discloses a mounting structure of underground cavern top arch rail type hoisting equipment, which comprises a plurality of fixing components arranged at intervals along the extending direction of a rail, each fixing component consists of a pair of anchoring parts and a supporting part connected with the anchoring parts, the tops of the anchoring parts are anchored into a cavern top arch rock mass, and the supporting parts are connected with the anchoring parts. The bearing piece is fixedly connected with the exposed sections of the bottoms of the two anchoring pieces, and the track is fixedly connected with the bearing piece. The installation structure of the underground cavern top arch rail type hoisting equipment is safe, reliable, convenient to construct, low in investment cost, suitable for the situation that rail fixing embedded parts cannot be pre-embedded due to the fact that an underground cavern top arch is not provided with a reinforced concrete lining, and capable of meeting the operation requirement of the hoisting equipment.

Description

Technical Field

[0001] This utility model relates to the field of underground cavern engineering construction technology, and in particular to an installation structure for an underground cavern arch track-type hoisting device. Background Technology

[0002] Rail-mounted lifting equipment is widely used in factory workshops, warehousing and logistics, and the quality of rail installation is particularly important, directly affecting the equipment's lifespan and operational safety. For typical industrial buildings, fixing the lifting equipment's rails to embedded parts in the reinforced concrete structure is sufficient. However, the situation is different in underground cavern projects such as hydropower station underground powerhouses and underground experimental halls of large scientific facilities. After excavation, the cavern is generally used directly as a room after only anchoring and spraying support to the rock surface. Considering the stability of the surrounding rock and the uniformity of stress, the cavern cross-section is usually designed as a city gate shape. In this case, when installing mobile lifting equipment at the arch, the following problems arise: on the one hand, it is extremely difficult to directly embed the rail fixing parts in the surrounding rock of the cavern arch; on the other hand, the excavated surface of the surrounding rock is often uneven, further increasing the difficulty of installing the lifting equipment rails at the cavern arch. Summary of the Invention

[0003] To address the aforementioned problems, this utility model provides an installation structure for a convenient, safe, and reliable underground cavern arch-mounted track-type hoisting device, specifically employing the following technical solution:

[0004] The installation structure of the underground cavern arch track-type hoisting device of this utility model includes multiple fixing components spaced apart along the extension direction of the track. Each fixing component consists of a pair of anchors and a support member connected thereto. The top of the anchor is anchored into the cavern arch rock body, and the support member is fixedly connected to the bottom exposed sections of the two anchors. The track is fixedly connected to the support member.

[0005] The fixing components are evenly spaced, with a spacing of 2-3m between adjacent fixing components.

[0006] The anchoring device uses mortar anchor rods with a minimum diameter of 20mm. The shortest length of the top of the anchor rod is 2m into the arch rock of the cavern, and the minimum length of the exposed bottom section is 250mm.

[0007] The anchors are symmetrically arranged on both sides of the central axis of the track, and both anchors in the same group are located on the outer side of the track.

[0008] The support component is made of channel steel, with its web plate welded to the anchor and its lower flange welded to the track.

[0009] The support member is symmetrically arranged along the central axis of the track and extends to the outside of the two anchors. The support member and each anchor are connected by two vertical fillet welds.

[0010] The track is a single track made of I-beams, and the upper flange of the I-beams is connected to the lower flange of the support by four horizontal fillet welds.

[0011] The installation structure of the underground cavern arch-mounted track-type hoisting equipment provided by this utility model is safe, reliable, easy to construct, and low in investment cost. It is suitable for situations where the underground cavern arch lacks reinforced concrete lining or other conditions where it is impossible to pre-embed track fixing components, and it can meet the operational requirements of the hoisting equipment. By setting several sets of track fixing components in the cavern arch, it solves the drawback of conventional track fixing components being difficult to install in the surrounding rock of the arch. Secondly, the support component of the fixing structure can flexibly adjust its welding position with the anchor according to the actual excavation conditions of the cavern, thereby ensuring that the track installation height of the hoisting equipment connected to the support component meets the design requirements. This solves the problem of uneven excavation surfaces of the cavern surrounding rock and provides a strong guarantee for the safe operation of the hoisting equipment suspended in the underground cavern arch. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 yes Figure 1 AA cross-section view.

[0014] Figure 3 yes Figure 1 BB cross-section. Detailed Implementation

[0015] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0016] like Figure 1-3As shown, the installation structure of the underground cavern arch-type hoisting equipment of this utility model includes multiple fixing components spaced apart along the extension direction of the track. Each fixing component consists of a pair of anchors and a supporting member connected to them. The anchors are vertically arranged mortar anchors 1, the supporting members are horizontally arranged channel steel 2, and the track 3 is a single track made of I-beams. Two mortar anchors 1 are symmetrically arranged on both sides of the track 3 of the hoisting equipment. One end of the mortar anchor 1 is anchored into the rock mass 4 of the cavern arch, and the other end (i.e., the exposed bottom section) is exposed inside the cavern and extends at least 250mm beyond the surface of the shotcrete layer 5. The exposed part of each mortar anchor 1 is connected to the web of the channel steel 2 by two vertical fillet welds 6, and the lower flange of the channel steel 2 is connected to the intersection of the upper flange of the I-beam track 3 by four horizontal fillet welds 7.

[0017] If the cavern conditions permit, the aforementioned fixing components can be evenly spaced along the length of the track, with a spacing of 2-3 meters between adjacent fixing components. The diameter and anchorage length of the mortar anchor rod 1, the weld length and height of the vertical fillet weld 6, the weld length and height of the horizontal fillet weld 7, and the channel steel type are all determined comprehensively through calculation based on the lifting capacity of the lifting equipment. The mortar anchor rod 1 can be made of HRB400 grade steel bars, with a recommended anchor rod diameter of not less than 20mm and an anchorage section length of not less than 2m. The spacing S between the two mortar anchor rods 1 in each fixing component group is determined based on the width of the upper flange of the track 3, while also considering a certain amount of installation space. Typically, the two mortar anchor rods 1 are symmetrically arranged on both sides of the central axis of the track 3, and both are located on the outer side of the track 3, that is, the spacing S of the mortar anchor rods 1 should be greater than the width of the track 3. The channel steel 2 is symmetrically arranged along the central axis of the track 3 and extends to the outside of the two mortar anchor rods 1. That is, the channel steel 2 has a certain overhang length relative to the mortar anchor rods 1. Generally, the length of the channel steel 2 can be selected as S+100mm.

[0018] During construction, the laying route of track 3 and the installation position of fixing components are first determined according to the design drawings. Then, the fixing components are installed. Specifically, the mortar anchor rods 1 are first anchored into the rock mass 4 of the tunnel arch, and then the channel steel 2 is welded between the two mortar anchor rods 1. After some or all of the fixing components are installed, the upper flange of track 3 is welded to the lower flange of channel steel 2 to complete the installation of track 3.

[0019] This utility model can be flexibly adjusted according to the actual excavation of the cavern, is easy to construct, and has a safe and reliable structure, providing a guarantee for the safe operation of the lifting equipment suspended on the arch of the underground cavern.

[0020] It should be noted that in the description of this utility model, terms such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", and "outer" indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

Claims

1. An installation structure for a track-type hoisting device for an underground cavern ceiling, characterized in that: It includes multiple fixing components spaced apart along the track extension direction. Each fixing component consists of a pair of anchors and a support connected thereto. The top of the anchors is anchored into the arch rock body of the cavern roof. The support is fixedly connected to the exposed bottom sections of the two anchors. The track is fixedly connected to the support.

2. The installation structure of the underground cavern crown canal rail hoisting equipment according to claim 1, characterized in that: The fixing components are evenly spaced, with a spacing of 2-3m between adjacent fixing components.

3. The installation structure of the underground cavern crown canal rail hoisting equipment according to claim 1, characterized in that: The anchoring device uses mortar anchor rods with a minimum diameter of 20mm. The shortest length of the top of the anchor rod is 2m into the arch rock of the cavern, and the minimum length of the exposed bottom section is 250mm.

4. The installation structure of the underground cavern arch track-type hoisting equipment according to claim 1, characterized in that: The anchors are symmetrically arranged on both sides of the central axis of the track, and both anchors in the same group are located on the outer side of the track.

5. The installation structure of the underground cavern crown canal rail hoisting apparatus according to claim 1, characterized by: The support component is made of channel steel, with its web plate welded to the anchor and its lower flange welded to the track.

6. The installation structure of the underground cavern crown canal rail hoisting apparatus according to claim 5, characterized by: The support member is symmetrically arranged along the central axis of the track and extends to the outside of the two anchors. The support member and each anchor are connected by two vertical fillet welds.

7. The installation structure of the underground cavern crown canal rail hoisting apparatus according to claim 5, characterized by: The track is a single track made of I-beams, and the upper flange of the I-beams is connected to the lower flange of the support by four horizontal fillet welds.

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