Waist line protection device for roadway construction

Abstract

The utility model provides a waistline protection device for roadway construction. The waistline protection device comprises a fixed base and a shield body. The fixed bases are fixed on the upper side and the lower side of a waistline on the side wall of a roadway in pairs, and the waistline is provided with waistline measuring points. The protective cover body comprises a shell with a single-side opening and a measuring point protective cover used for covering a waistline measuring point, a first through hole allowing the waistline measuring point to penetrate through is formed in the other side, opposite to the single-side opening, of the shell, and the measuring point protective cover is arranged around the first through hole and protrudes outwards. The shell further comprises a connecting part which is arranged along the edge of the single-side opening and extends towards the outer side, the connecting part is detachably connected with the fixing base, the face, making contact with the connecting part, of the fixing base is flush with the side wall of the roadway, and the fixing base, the side wall of the roadway and the shield body form a closed space used for containing the waistline. Before guniting operation is carried out, the protective cover body covers the waistline, and the effect of protecting the waistline and waistline measuring points from being covered by guniting materials can be achieved.

Description

Technical Field

[0001] The present application relates to the technical field of tunnel construction, and in particular to a waistline protection device for tunnel construction. Background Art

[0002] The waistline is a horizontal line used to calibrate the direction and height of a tunnel during construction. By measuring and calibrating the waistline during construction, deviations can be promptly detected and corrected, ensuring accurate construction. In actual construction, the waistline is often covered by the support shotcrete, making it difficult to locate during excavation. Operators must notify surveyors to re-establish the waistline. Sometimes, operators rely solely on feel, resulting in frequent over- or under-excavation of the roof and floor, requiring rework, impacting construction efficiency, and slowing down construction speed. Utility Model Content

[0003] To address the aforementioned technical issues, the present application provides a waistline protection device for tunnel construction, comprising a fixed base and a shield body. The fixed bases are fixed in pairs to the upper and lower sides of a waistline on a tunnel sidewall, the waistline having a waistline measuring point. The shield body comprises a housing with a single-sided opening and a measuring point shield for housing the waistline measuring point. The housing is provided with a first through-hole on the other side of the housing opposite the single-sided opening, through which the waistline measuring point can pass. The measuring point shield is provided around the first through-hole and protrudes outward. The housing also includes a connecting portion provided along the edge of the single-sided opening and extending outward, the connecting portion being detachably connected to the fixed base.

[0004] The surface of the fixed base that contacts the shield body is flush with the roadway sidewall. The fixed base, the roadway sidewall, and the shield body form an enclosed space for accommodating the connection portion. Placing the shield body over the waistline before the spraying operation can protect the waistline and waistline measurement points from being covered by the sprayed material. Furthermore, the shield body is clearly distinguishable from the roadway sidewall in appearance, making it easily distinguishable to operators even if covered by the sprayed material.

[0005] In some embodiments, the surface of the fixed base that contacts the shield body is provided with a slot flange. The gap between the slot flange and the fixed base forms a slot for inserting the connecting portion, and a space for accommodating the connecting portion is formed between the two slots. Simply inserting the shield body into the slot is safe, quick, and convenient.

[0006] In some embodiments, the measuring point shield is detachably connected to the housing. This shield can be removed when only the waistline measuring point is required for observation. For example, a sleeve protruding outward is provided at the edge of the first through-hole, the waistline measuring point extends from the sleeve, and the inner wall of the measuring point shield is threadedly connected to the outer wall of the sleeve.

[0007] In some embodiments, the measuring point shield is conical in shape, which can allow the spraying material to slide off the outer surface of the cone during the spraying operation to avoid being completely covered by the spraying material.

[0008] In some embodiments, the measuring point shield and the housing are integrally formed, which can not only improve the sealing performance but also reduce the cost during mass production.

[0009] In some embodiments, the measuring point shield is adapted to the shape of the waistline measuring point, which is beneficial to reducing the volume of the shell, saving raw materials, and is still easy for operators to identify after being covered by the spraying material.

[0010] In some embodiments, a seal is provided between the connecting portion and the fixed base. The seal has a second through hole in the middle having the same shape and size as the single-sided opening to enhance the sealing effect and prevent water and dust from entering the interior of the shield body. The seal can be a rubber plate, a rubber ring, a felt plate, or the like.

[0011] In some embodiments, the shell is made of corrosion-resistant material, such as stainless steel, PVC plastic, etc., to adapt to different usage environments.

[0012] The present invention has the following beneficial effects: by providing a protective cover body to enclose the waistline and waistline measurement points in space, the waistline and waistline measurement points can be protected from being covered by the sprayed material. Moreover, since the protective cover body is clearly distinguishable from the sidewall of the roadway, even if it is covered by the sprayed material, the operator can easily identify it. The protective cover body is movably connected to the fixed base, making it easy to disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0014] Figure 1 This is a three-dimensional exploded view of the first embodiment of the present utility model;

[0015] Figure 2 is a cross-sectional view of the first embodiment of the utility model;

[0016] Figure 3 This is a perspective exploded view of the second embodiment of the present utility model;

[0017] Figure 4 It is a cross-sectional view of the second embodiment of the present invention. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other alternative implementations obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0019] Figure 1 and Figure 2 The first embodiment of the present application is shown, which provides a waistline protection device for tunnel construction, including two fixed bases 1 and a shield body 2. The two fixed bases 1 are respectively fixed to the upper and lower sides of the waistline 20 on the tunnel sidewall 10, and the waistline 20 has a waistline measuring point 30.

[0020] The shield body 2 comprises a housing 21 with a single-sided opening 211, and a measuring point shield 22 for housing the waistline measuring point 30. The housing 21 is provided with a first through-hole 212 on the side opposite the single-sided opening 211, through which the waistline measuring point 30 passes. An outwardly protruding sleeve 214 is provided at the edge of the first through-hole 212, through which the waistline measuring point 30 extends. The inner wall of the measuring point shield 22 is threadedly connected to the outer wall of the sleeve 214. The housing 21 also includes a connecting portion 213 extending outwardly along the edge of the single-sided opening 211. The connecting portion 213 is detachably connected to the fixed base 1.

[0021] A slot flange 11 is provided on the side of the fixed base 1 that contacts the connecting part 213. The slot flange 11 and the fixed base 1 form a slot 12 in which the connecting part 213 can be inserted. The two fixed bases 1 are arranged opposite to each other, and a space for accommodating the connecting part 213 is formed between the two slots 12. The connecting part 213 can be inserted into the slot 12 to achieve a detachable connection with the fixed base 1.

[0022] The surface of the fixed base 1 that contacts the connecting portion 213 is flush with the roadway sidewall 10. The fixed base 1, roadway sidewall 10, and shield body 2 form an enclosed space for accommodating the waistline 20. During construction, this protects the waistline 20 and waistline measuring points 30 from being covered by the sprayed material and obscured from view. After the spraying operation is completed, the operator can either remove the measuring point shield 22 individually to observe the waistline measuring points 30, or remove the entire shield body 2 to observe the entire waistline 20.

[0023] In some embodiments, the housing 21 and the waistline measuring point 30 may also be connected by bolts.

[0024] In some embodiments, the outer profile of the measuring point shield 22 is as follows: Figure 1 The cone shape shown allows the spray material to slide off the outer surface of the cone during the spraying operation, avoiding being completely covered by the spray material. In actual use, other shapes such as a cylinder can also be used.

[0025] In some embodiments, if the waistline 20 is long, multiple fixed bases 1 may be provided. If there are multiple waistline measuring points 30 on the waistline 20, multiple measuring point shields 22 may also be provided.

[0026] In the second embodiment of the present application, Figure 3 and Figure 4 As shown, the shield body 2 is bolted to the fixed base 1. The shield body 2 is integrally formed from the housing 21 and the measuring point shield 22, which not only improves sealing but also reduces costs during mass production. The shape of the measuring point shield 22 is compatible with the waistline measuring point 30, reducing the space in the housing 21 and saving raw materials. Even after being covered with the sprayed material, it remains easy for operators to identify.

[0027] In some embodiments, as Figure 3 As shown, a seal 3 is provided between the fixed base 1 and the connecting portion 213. The seal 3 has a second through hole 31 in the middle thereof, which is the same shape and size as the single-sided opening 211. The seal 3 can be placed around the waistline 20 to enhance the sealing effect between the shield body 2 and the fixed base 1, preventing water and dust from entering the shield body 2. The seal 3 can be made of a rubber sheet, a rubber ring, a felt sheet, etc.

[0028] In some embodiments, the shield body 2 may be made of corrosion-resistant materials, such as stainless steel, PVC plastic, etc., to adapt to different usage environments.

[0029] Finally, it should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0031] The above is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A waistline protection device for tunnel construction, characterized by: include: A fixed base, used for being fixed in pairs on the upper and lower sides of a waistline on the side wall of the roadway, wherein the waistline has a waistline measuring point; The shield body includes a shell having a single-side opening and a measuring point shield for covering the waistline measuring point; the shell is provided with a first through-hole on the other side opposite to the single-side opening, through which the waistline measuring point can pass; the measuring point shield is provided around the first through-hole and protrudes outward; the shell also includes a connecting portion provided along the edge of the single-side opening and extending outward, the connecting portion being detachably connected to the fixed base; Wherein, a surface of the fixed base in contact with the connecting portion is flush with the side wall of the lane; the fixed base, the side wall of the lane and the shield body form a closed space for accommodating the waistline.

2. The waistline protection device for tunnel construction according to claim 1, characterized in that: A slot flange is provided on the side of the fixed base that contacts the shield body, a slot for inserting the connecting part is formed between the slot flange and the fixed base, and a space for accommodating the connecting part is formed between the two slots.

3. The waistline protection device for tunnel construction according to claim 1, characterized in that: The measuring point shield is detachably connected to the housing.

4. The waistline protection device for tunnel construction according to claim 3, characterized in that: A sleeve protruding outward is provided at the edge of the first through hole, the waistline measuring point extends out of the sleeve, and the inner wall of the measuring point shield is threadedly connected to the outer wall of the sleeve.

5. The waistline protection device for tunnel construction according to claim 4, characterized in that: The measuring point shield is conical.

6. The waistline protection device for tunnel construction according to claim 1, characterized in that: The measuring point shield is integrally formed with the shell.

7. The waistline protection device for tunnel construction according to claim 1, characterized in that: The measuring point shield is adapted to the shape of the waistline measuring point.

8. The waistline protection device for tunnel construction according to any one of claims 1 to 7, characterized in that: A sealing member is provided between the connecting portion and the fixed base, and a second through hole having the same shape and size as the single-sided opening is provided in the middle of the sealing member.

9. The waistline protection device for tunnel construction according to claim 8, characterized in that: The sealing element is a rubber plate.

10. The waistline protection device for tunnel construction according to claim 1, characterized in that: The shell is made of corrosion-resistant material.

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