Active protection structure and construction trolley

Abstract

The embodiment of the utility model provides an active protection structure and a construction trolley, and relates to the field of tunnel construction. The active protection structure comprises a support and telescopic supporting legs. The telescopic supporting leg is rotatably connected to the support and used for abutting against the surrounding rock. In the tunnel construction process, the supports are used for supporting the telescopic supporting legs, the telescopic supporting legs abut against the surrounding rock to play an active protection role, the collapse probability of the surrounding rock can be reduced, casualties of workers are avoided, and therefore potential safety hazards are reduced. The construction trolley comprises a rack type trolley body and the active protection structure, the support is installed on the rack type trolley body, and the construction trolley has all functions of the active protection structure.

Description

Technical Field

[0001] The utility model relates to the field of tunnel construction, and in particular to an active protection structure and a construction trolley. Background Art

[0002] At present, when constructing the initial support of a tunnel, the excavated tunnel wall is usually directly supported by an arch. However, due to the lack of stability of the tunnel after excavation, especially in areas with soft and broken surrounding rock, there is a high risk of collapse during the arch support operation, which may cause casualties and thus pose a great safety hazard. Currently, there is no good way to deal with this situation.

[0003] This application combines the structural characteristics of the bench-type tunnel construction trolley to design an active protection structure attached to the bench-type tunnel construction trolley to reduce the risk of tunnel collapse when the arch is erected. Utility Model Content

[0004] The utility model provides an active protection structure and a construction trolley, which can support the surrounding rock through telescopic legs to play an active protection role, can reduce the collapse probability of the surrounding rock, avoid casualties to workers, and thus reduce safety hazards.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] The embodiment of the utility model provides an active protection structure, which includes:

[0007] Support and telescopic legs;

[0008] Wherein, the telescopic legs are rotatably connected to the support and are used to support the surrounding rocks.

[0009] Optionally, the number of the telescopic legs is at least two, and the at least two telescopic legs are arranged at an angle and are respectively used to support different positions in the circumferential direction of the surrounding rock.

[0010] Optionally, the telescopic leg includes a leg body and a support plate, one end of the leg body is rotatably connected to the support, and the support plate is arranged at the other end of the leg body and is used to support the surrounding rock.

[0011] Optionally, the telescopic leg further comprises a spherical connector, wherein the spherical connector is connected between the support plate and the leg body.

[0012] Optionally, the support includes a seat body and a frame body, the frame body is telescopically connected to the seat body, and the telescopic legs are rotatably connected to the frame body.

[0013] Optionally, the support further includes a rotating shaft, which is rotatably connected to the frame body, and at least two of the telescopic legs are slidably disposed on the rotating shaft and rotate synchronously with the rotating shaft.

[0014] Optionally, the support further includes a load-bearing beam, which is disposed at the top of the frame and is used to support the arch frame.

[0015] Optionally, the active protection structure further includes a support platform, and the support platform is movably connected to the telescopic legs.

[0016] The embodiment of the utility model further provides a construction trolley, comprising a trolley-type vehicle body and an active protection structure, wherein a support is installed on the trolley-type vehicle body.

[0017] Optionally, the active protection structure is provided on both sides of the platform-type vehicle body, and both active protection structures are provided with support platforms. The support platforms of the active protection structures on both sides can be overlapped to form a docking operation platform.

[0018] The beneficial effects of the active protection structure and the construction trolley of the embodiment of the utility model include, for example:

[0019] The active protection structure includes a support and a telescopic leg; wherein the telescopic leg is rotatably connected to the support and used to support the surrounding rock. During the tunnel construction process (mainly vertical supply construction), the support is used to support the telescopic leg, and the telescopic leg supports the surrounding rock to play an active protection role, which can reduce the probability of surrounding rock collapse, avoid casualties to workers, and thus reduce safety hazards.

[0020] The construction trolley includes an active protection structure, which has all the functions of the active protection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of the active protection structure provided in an embodiment of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the working platform provided in the embodiment of the utility model.

[0024] Icons: 100-active protection structure; 110-support; 111-seat body; 112-frame; 113-rotating shaft; 114-bearing beam; 120-telescopic support leg; 121-leg body; 123-support plate; 124-spherical connector; 130-support platform; 131-first sub-board; 132-second sub-board; 140-docking work platform; 150-sliding track. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.

[0029] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0030] The terms "comprises," "comprising," or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0031] Unless otherwise clearly specified and limited, the terms "disposed", "connected" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0032] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0033] Please refer to Figure 1 and Figure 2 The active protection structure 100 and the construction trolley provided in the embodiment of the utility model can solve the above-mentioned problems, which will be described in detail below.

[0034] refer to Figure 1 The active protection structure 100 includes a support 110 and a telescopic support leg 120; wherein the telescopic support leg 120 is rotatably connected to the support 110 and is used to resist the surrounding rock.

[0035] During the tunnel construction process (especially during arch construction), the support 110 is used to support the telescopic legs 120, and the telescopic legs 120 support the surrounding rocks to play an active protective role, which can reduce the probability of surrounding rock collapse and avoid casualties to workers, thereby reducing safety hazards.

[0036] It should be noted that in the prior art, arch erection is usually performed after tunnel excavation, while active support of surrounding rock is neglected. When surrounding rock collapses due to poor stability, it is very easy to cause casualties of workers, thus posing a great safety hazard. The active protection structure 100 is used to actively protect the surrounding rock by supporting it with telescopic legs 120 after tunnel excavation and before arch erection.

[0037] Furthermore, the telescopic legs 120 are telescopic structures, which, on the one hand, facilitate sufficient extension length when supporting the surrounding rock, and on the other hand, do not occupy a large space due to excessive extension length when stored. The telescopic legs 120 can be a two-stage telescopic structure or a three-stage telescopic structure, and the specific telescopic stages are not limited.

[0038] refer to Figure 1 The active protection structure 100 further includes a sliding track 150, and the support 110 is slidably disposed on the sliding track 150. Specifically, the sliding track 150 can be arranged along the axial direction of the tunnel so as to drive the support 110 and the telescopic support leg 120 to move along the axial direction of the tunnel, thereby increasing the protection stroke of the overall active protection structure 100 and reducing the movement frequency of the active protection structure 100.

[0039] It is worth noting that the sliding track 150 may include two parallel guide rails and sleepers connected between the two guide rails. The number of sleepers is multiple, and the multiple sleepers are equidistantly spaced, and the sleepers are vertically arranged relative to the guide rails, which helps to improve the structural stability of the overall sliding track 150.

[0040] refer to Figure 1 The support 110 includes a seat body 111 and a frame body 112, the frame body 112 is telescopically connected to the seat body 111, and the telescopic legs 120 are rotatably connected to the frame body 112. Specifically, the seat body 111 is slidably disposed on the sliding track 150.

[0041] During use, when the top of the surrounding rock is relatively high, the telescopic structure of the frame 112 can be used to drive the telescopic legs 120 to rise, so as to compensate for the height of the telescopic legs 120, and further improve the protective stroke of the active protective structure 100. When it is necessary to store, the frame 112 can be shortened to avoid the extended length being too long and occupying too much space to affect the storage effect.

[0042] It is worth noting that the frame 112 can have a specific telescopic power source, which can be a linear electric cylinder, a linear hydraulic cylinder or a linear air cylinder, and its specific power form is not limited.

[0043] refer to Figure 1 In order to improve the adjustment efficiency of the telescopic legs 120, the support 110 may further include a rotating shaft 113, which is rotatably connected to the frame 112, and at least two telescopic legs 120 may be slidably disposed on the rotating shaft 113 and rotate synchronously with the rotating shaft 113.

[0044] When controlling the telescopic legs 120 to move, the rotating shaft 113 can be controlled to rotate so that the rotation simultaneously drives at least two telescopic legs 120 to rotate synchronously, thereby improving the protection efficiency. In addition, the axial position of each telescopic leg 120 on the rotating shaft 113 can also be adjusted.

[0045] In this embodiment, in order to prevent the telescopic legs 120 from deflecting relative to the rotating shaft 113, the cross-section of the rotating shaft 113 is rectangular; of course, in other embodiments of the present invention, the cross-section of the rotating shaft 113 can also be other shapes such as rhombus, triangle, pentagon, etc., and its specific cross-sectional shape is not limited.

[0046] In this embodiment, three telescopic legs 120 are arranged on a single rotating shaft 113; of course, in other embodiments of the present invention, the number of telescopic legs 120 on a single rotating shaft 113 can also be two, four, seven, etc., and there is no limitation on the specific number of the telescopic legs 120.

[0047] refer to Figure 1 In order to improve the arch erection efficiency while providing active protection, the support 110 may further include a load-bearing beam 114, which is disposed at the top of the frame 112 and is used to support the arch frame.

[0048] Furthermore, the load-bearing beam 114 has a certain extension length, and the extension direction of the load-bearing beam 114 is consistent with the extension direction of the sliding track 150 .

[0049] It should be noted that the arch supported by the load-bearing beam 114 may be a folding structure arch or an unfolding structure arch, and the specific structural type of the arch is not limited.

[0050] refer to Figure 1 The number of the telescopic legs 120 is at least two, and the at least two telescopic legs 120 are arranged at an angle and are respectively used to support different positions on the circumference of the surrounding rock.

[0051] Because the tunnel surrounding rock is an arc-shaped structure, by setting the telescopic legs 120 at an angle to support different positions in the arc extension direction, it helps to improve the support strength and further reduce the probability of surrounding rock collapse.

[0052] Furthermore, a plurality of telescopic legs 120 may be arranged along the axial direction of the tunnel so as to support different surrounding rocks in the axial direction of the tunnel.

[0053] In this embodiment, the number of telescopic legs 120 in a single active protection structure 100 is two, and the two telescopic legs 120 are arranged in two columns and three rows. The column arrangement direction can be understood as the arc extension direction of the surrounding rock, and the row arrangement direction can be understood as the axial direction of the tunnel.

[0054] Of course, in other embodiments of the present invention, the number of telescopic legs 120 in a single active protection structure 100 may also be four, eight, ten, etc., and the specific number of rows and columns is not limited.

[0055] refer to Figure 1 The telescopic support leg 120 includes a leg body 121 and a support plate 123. One end of the leg body 121 is rotatably connected to the support 110. The support plate 123 is arranged at the other end of the leg body 121 and is used to support the surrounding rock. The axial cross-sectional area of ​​the support plate 123 is larger than the axial cross-sectional area of ​​the leg body 121.

[0056] It should be noted that, by providing a support plate 123 with a larger axial cross-sectional size, the support area of ​​the single telescopic support leg 120 on the surrounding rock can be increased, so as to further improve the stability of the surrounding rock. Furthermore, in order to improve the buffering and shock absorbing performance, the surface of the support plate 123 can be arranged with a non-rigid material, which can specifically be rubber or nylon, so that it can play a role of buffering and shock absorbing while supporting the surrounding rock.

[0057] Furthermore, because the surrounding rock surface is not completely regular, the telescopic support leg 120 may also include a spherical connector 124, which is connected between the support plate 123 and the leg body 121. By providing the spherical connector 124, the support plate 123 can be conveniently rotated at multiple angles relative to the leg body 121, so as to fully support the irregular surrounding rock.

[0058] refer to Figure 1 The active protection structure 100 further includes a support platform 130 , which is movably connected to the telescopic legs 120 .

[0059] Specifically, the support platform 130 can be rotatably connected to the telescopic leg 120, so that the support platform 130 can rotate with one end as the rotation center and the other end can rotate relatively; the support platform 130 can also be telescopically connected to the telescopic leg 120, so that the support platform 130 can be telescopically moved along the axial direction of the telescopic leg 120.

[0060] It should be noted that a single support platform 130 can be connected to two or more telescopic legs 120 at the same time, or the support platform 130 and the telescopic legs 120 can be made to correspond one to one, and the specific connection method of the support platform 130 is not limited.

[0061] In this embodiment, the support platform 130 includes a first sub-plate 131 and a second sub-plate 132. The first sub-plate 131 is a telescopic structure and is telescopically connected to the telescopic leg 120; the second sub-plate 132 is rotatably connected to the telescopic leg 120, and a hydraulic cylinder is also arranged therebetween, through the action of the hydraulic cylinder, the second sub-plate 132 can rotate relative to the telescopic leg 120.

[0062] Furthermore, in order to further increase the support range of the support platform 130, the support platform 130 itself may be a multi-stage telescopic structure, which may be a two-stage telescopic structure or a three-stage telescopic structure, and the specific number of telescopic stages is not limited.

[0063] The embodiment of the utility model further provides a construction trolley, comprising a trolley body and an active protection structure 100, and a support 110 is installed on the trolley body. Specifically, the sliding track 150 in the active protection structure 100 can be installed on the trolley body, and the support 110 can be slidably arranged on the sliding track 150, so that the relative movement of the support 110, the sliding track 150 and the trolley body can be achieved through sliding cooperation.

[0064] refer to Figure 2 In order to ensure adequate protection of the surrounding rocks, the number of active protection structures 100 on a single platform-type vehicle body can be two, and the two active protection structures 100 respectively actively protect the two sides of the surrounding rocks.

[0065] In addition, both active protection structures 100 are provided with a support platform 130. The support platforms 130 located at different active protection structures 100 can overlap each other to form a docking work platform 140. The activity range on the docking work platform 140 is larger than the activity range in the hanging basket in the prior art, so that the staff can walk and move on the docking work platform 140, which increases the construction flexibility of the staff and improves the construction efficiency, avoiding the need to drive the staff to adjust their positions when constructing at different positions of the surrounding rock.

[0066] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An active protection structure, characterized in that: include: A support (110) and a telescopic support leg (120); The telescopic legs (120) are rotatably connected to the support (110) and are used to support surrounding rocks.

2. The active protection structure according to claim 1, characterized in that: The number of the telescopic legs (120) is at least two, and the at least two telescopic legs (120) are arranged at an angle and are respectively used to support different positions on the circumference of the surrounding rock.

3. The active protection structure according to claim 1, characterized in that: The telescopic support leg (120) comprises a leg body (121) and a support plate (123), one end of the leg body (121) is rotatably connected to the support (110), and the support plate (123) is arranged at the other end of the leg body (121) and is used to support the surrounding rock.

4. The active protection structure according to claim 3, characterized in that: The telescopic supporting leg (120) further comprises a spherical connector (124), wherein the spherical connector (124) is connected between the supporting plate (123) and the leg body (121).

5. The active protection structure according to any one of claims 1 to 4, characterized in that: The support (110) comprises a seat body (111) and a frame body (112); the frame body (112) is telescopically connected to the seat body (111); and the telescopic legs (120) are rotatably connected to the frame body (112).

6. The active protection structure according to claim 5, characterized in that: The support (110) further comprises a rotating shaft (113), wherein the rotating shaft (113) is rotatably connected to the frame body (112), and at least two of the telescopic legs (120) are slidably disposed on the rotating shaft (113) and rotate synchronously with the rotating shaft (113).

7. The active protection structure according to claim 5, characterized in that: The support (110) further comprises a bearing beam (114), wherein the bearing beam (114) is arranged at the top end of the frame body (112) and is used to bear the arch frame.

8. The active protection structure according to any one of claims 1 to 4, characterized in that: The active protection structure further comprises a support platform (130), and the support platform (130) is movably connected to the telescopic support leg (120).

9. A construction trolley, characterized in that: It comprises a platform-type vehicle body and the active protection structure according to any one of claims 1 to 8, wherein the support (110) is installed on the platform-type vehicle body.

10. The construction trolley according to claim 9, characterized in that: The active protection structures are provided on both sides of the platform-type vehicle body, and both active protection structures are provided with support platforms (130). The support platforms (130) of the active protection structures on both sides can be overlapped to form a docking operation platform (140).

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