Concrete spraying monitoring point protection device and disassembly and assembly method thereof

Abstract

The invention provides a concrete spraying monitoring point protection device and a dismounting and mounting method thereof, and relates to the technical field of concrete spraying protection, the device is used for protecting a monitoring mark part of a concrete spraying monitoring point, the concrete spraying monitoring point protection device comprises a protection main body, the protection main body is internally provided with a protection space, and the protection main body is made of a deformable material; the operating part is arranged on the protective main body, and the operating part is used for enabling the protective main body to deform after being stressed; the protection main body is provided with an opening, and the opening is communicated with the protection space, so that after the protection main body deforms, the monitoring marking part enters or exits from the protection space through the opening. The concrete spraying monitoring point can be protected during concrete spraying, so that the concrete spraying monitoring point is not polluted and covered, and the concrete spraying monitoring point is easy to mount and dismount.

Description

Technical Field

[0001] The invention relates to the technical field of sprayed concrete protection, and in particular to a sprayed concrete monitoring point protection device and a disassembly and assembly method thereof. Background Art

[0002] In construction projects, shotcrete is mainly used for tunnel spraying. Shotcrete spraying refers to the use of compressed air to transport concrete mixture in a certain ratio through pipes and spray it at high speed onto the sprayed surface to solidify and harden, thereby forming a concrete support layer.

[0003] The area to be sprayed with concrete is often equipped with monitoring and measuring points (referred to as sprayed concrete monitoring points). During the spraying process, if no protective measures are taken, the sprayed concrete monitoring points are easily contaminated by concrete. In the prior art, foam or film is often used to protect the sprayed concrete monitoring points, but this operation is relatively cumbersome, and after spraying concrete, the foam or film is easily bonded to the concrete support layer at the sprayed concrete monitoring point, which is not conducive to removal. Summary of the invention

[0004] The present invention aims to solve the problem that the existing sprayed concrete monitoring point protection method has the problem of being complicated to operate and / or not being conducive to dismantling.

[0005] In order to solve the above problems, in a first aspect, the present invention provides a sprayed concrete monitoring point protection device, which is used to protect the monitoring mark part of the sprayed concrete monitoring point, comprising: A protective body, wherein a protective space is provided inside the protective body, and the protective body is made of a deformable material; An operating member, the operating member is arranged on the protection body, and the operating member is used to deform the protection body after receiving a force; The protection body is provided with an opening, and the opening is communicated with the protection space, so that after the protection body is deformed, the monitoring mark part enters or exits the protection space through the opening.

[0006] The protective body of the present invention is provided with a protective space, an opening is provided in the protective body and communicates with the protective space, and the protective body is made of a deformable material and provided with an operating part. After the operating part is subjected to force, the protective body can be changed from a non-deformed state to a deformed state, the opening is opened accordingly, and the protective space is in an open state accordingly, so that whether before or after spraying concrete, the monitoring mark part can enter the protective space through the opening to complete the protective installation, or the monitoring mark part can be withdrawn from the protective space through the opening to complete the protective disassembly. When the operating part on the protective body is not subjected to force, the protective body is changed from a deformed state to a non-deformed state, the opening is closed accordingly, and the protective space is in a closed state accordingly, so that the monitoring mark part entering the protective space can be protected, and the protection of the spraying concrete monitoring point is realized when spraying concrete, so that the spraying concrete monitoring point is not polluted and covered by concrete. Since the disassembly and assembly can be carried out by means of deformation and deformation recovery (non-deformed state), the change of deformation state can be completed by means of force (such as the application of external force) in practical applications, and it is easy to install and disassemble.

[0007] In a second aspect, the present invention further provides a method for disassembling and assembling a protective device for a sprayed concrete monitoring point, using the protective device for a sprayed concrete monitoring point as described in any one of the above items, comprising: By applying a force to the operating member, the protective body is deformed, allowing the monitoring mark part to enter the protective space of the protective body through the opening so that the protective space protects the monitoring mark part, or the monitoring mark part is allowed to exit the protective space through the opening.

[0008] The disassembly and assembly method provided by the present invention has the following beneficial effects compared with the prior art: disassembly and assembly can be completed by relying on deformation, installation and disassembly are simple, reliable spraying concrete protection can be provided for practical applications, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A three-dimensional schematic diagram of the protective device for spraying concrete monitoring points in an embodiment of the present invention is shown. Figure 1 ; Figure 2 A partial explosion schematic diagram of a protective device for a sprayed concrete monitoring point according to an embodiment of the present invention is shown; Figure 3 A three-dimensional schematic diagram of the protective device for spraying concrete monitoring points in an embodiment of the present invention is shown. Figure 2 ; Figure 4 A three-dimensional schematic diagram of a sprayed concrete monitoring point protection device without a cover body in an embodiment of the present invention is shown; Figure 5 A top view of the sprayed concrete monitoring point protection device without a cover body in an embodiment of the present invention is shown; Figure 6 It shows a side view of the sprayed concrete monitoring point protection device without a cover body in an embodiment of the present invention; Figure 7 It shows a schematic structural diagram of the protective device for spraying concrete monitoring points in a deformed state according to an embodiment of the present invention; Figure 8 A schematic diagram of the structure of a monitoring mark portion entering a protective body in an embodiment of the present invention is shown.

[0010] Description of reference numerals: 1. Protective body; 101. First protective part; 102. Second protective part; 2. Operating part; 201. Screw; 202. First limiting nut; 203. Second limiting nut; 3. Opening; 301. Avoidance gap; 302. Accommodating hole; 4. Cover; 5. Spraying concrete monitoring point; 501. Support rod; 502. Monitoring marking part; 503. Marking center. DETAILED DESCRIPTION

[0011] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0012] It should be noted that, in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0013] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment" and "one implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or implementations in a suitable manner.

[0014] The sprayed concrete monitoring point 5 is a monitoring and measuring point of the tunnel. The sprayed concrete monitoring point 5 of the tunnel refers to the steel bars driven into the back of the initial support of the tunnel in order to grasp the changing characteristics of the surrounding rock and supporting structure during the tunnel construction process. One end of the steel bar must enter the surrounding rock to a certain depth, and the other end cannot be covered by the sprayed concrete of the initial support. It must be exposed for a certain length, and then a small steel plate is welded at the lower end of the exposed steel bar head, and a reflective sticker is attached to it. When monitoring is required, a total station is set up in the tunnel hole to emit a laser. The cross center of the reflective sticker of the sprayed concrete monitoring point 5 can obtain the coordinates of the sprayed concrete monitoring point 5. The monitoring mark part 502 includes a small steel plate, and the mark center 503 is the cross center. The monitoring mark part 502 is inserted into the concrete to a certain depth through the end of the support rod 501. The support rod 501 includes steel bars. In order to solve the problem that the monitoring mark part 502 of the tunnel vault sprayed concrete monitoring point 5 is easily covered by sprayed concrete, refer to Figure 1 and Figure 8 As shown, the embodiment of the present invention proposes a spraying concrete monitoring point protection device, which is used to protect the monitoring mark part 502 of the spraying concrete monitoring point 5. The spraying concrete monitoring point protection device includes: A protective body 1, wherein a protective space is provided inside the protective body 1, and the protective body 1 is made of a deformable material; An operating member 2, wherein the operating member 2 is disposed on the protection body 1, and the operating member 2 is used to deform the protection body 1 after receiving a force; The protection body 1 is provided with an opening 3 , and the opening 3 is communicated with the protection space, so that after the protection body 1 is deformed, the monitoring mark part 502 enters or exits the protection space through the opening 3 .

[0015] Specifically, the protective space of the protective body 1 can accommodate the monitoring mark portion 502. After the operating member 2 is applied with external force, the protective body 1 is deformed. When the protective body 1 is deformed, the opening 3, as a part of the protective body 1, changes in size accordingly. When the protective body 1 is deformed, the opening 3 opens accordingly. When the protective body 1 recovers from deformation, the opening 3 closes accordingly. Before spraying concrete, by applying external force to the operating member 2, the protective body 1 is deformed, the opening 3 opens accordingly, and the monitoring mark portion 502 is communicated with the protective space by means of the opening 3. 502 can enter the protection space, and finally the whole device can be inverted on the monitoring mark part 502, and the external force is removed, and the protection body 1 changes from a deformed state to a non-deformed state, the opening 3 is closed, and the protection space is closed accordingly, thereby enclosing the monitoring mark part 502 in the protection space, so that it will not be contaminated by concrete during concrete spraying. After the concrete spraying is completed, the protection body 1 is deformed by applying external force to the operating part 2 again, and the opening 3 is opened accordingly. With the help of the opened opening 3, the monitoring mark part 502 can withdraw from the protection space, and the device can be removed.

[0016] It should be noted that, in the non-deformed state, although the opening 3 is connected to the protection space, the opening 3 is a narrow gap at this time, which will not affect or has a small impact on the sprayed concrete protection, and this impact can be ignored.

[0017] When this embodiment is applied in practice, a protective space is provided in the protective body 1, and the opening 3 is opened in the protective body 1 and communicates with the protective space. The protective body 1 is made of a deformable material and is provided with an operating member 2. After the operating member 2 is subjected to force, the protective body 1 can be changed from a non-deformed state to a deformed state, and the opening 3 is opened accordingly, and the protective space is in an open state accordingly. Therefore, whether before or after spraying concrete, the monitoring mark portion 502 can enter the protective space through the opening 3 to complete the protective installation, or the monitoring mark portion 502 can exit the protective space through the opening 3. The protective space is formed to complete the protective disassembly. When the operating part 2 on the protective body 1 is not subjected to force, the protective body 1 is changed from a deformed state to a non-deformed state, and the opening 3 is closed accordingly. The protective space is then in a closed state, which can form protection for the monitoring mark part 502 entering the protective space, thereby realizing the protection of the concrete spraying monitoring point 5 when spraying concrete, so that the concrete spraying monitoring point 5 is not contaminated and covered by concrete. Since the non-deformed state can be restored by means of deformation and deformation, the deformation state can be changed by means of force, such as the application of external force, in actual applications, and it is easy to install and disassemble.

[0018] The present invention can be applied to tunnel engineering, and can protect the sprayed concrete monitoring point 5 near the working face where the tunnel is continuously excavated, thereby ensuring the authenticity and continuity of the monitoring measurement data, and providing favorable conditions for guiding the safe construction of the tunnel.

[0019] like Figure 4 , Figure 5 and Figure 6 As shown, as an optional embodiment of the present invention, the first protection portion 101 and the second protection portion 102 are symmetrically arranged and the cross-sectional shapes of the two include arcs.

[0020] When this embodiment is applied in practice, the first protection part 101 and the second protection part 102 are symmetrically arranged, that is, the protection body 1 is a symmetrical shape, and its cross-sectional shape is an arc. The two arcs are combined to form the protection body 1, which is also convenient for setting a protection space therein.

[0021] like Figure 4 , Figure 5 and Figure 6As shown, as an optional embodiment of the present invention, the protective body 1 includes a first protective part 101 and a second protective part 102, the first protective part 101 and the second protective part 102 form a cylindrical protective body 1, and the opening 3 axially penetrates the cylindrical protective body 1.

[0022] When this embodiment is applied in practice, the first protective part 101 and the second protective part 102 form a protective body 1 of a cylindrical structure, and the opening 3 axially penetrates the protective body 1 of the cylindrical structure. Then, the protective space is arranged in the protective body 1 of the cylindrical structure, and the protective space can also be cylindrical. When the first protective part 101 and the second protective part 102 constitute the protective body 1, there is no obvious difference between the first protective part 101 and the second protective part 102. The opening 3 axially penetrating the protective body 1 of the cylindrical structure forms a gap in the protective space along the axial direction, and the gap can be arranged in the circumference of the protective space. When the protective body 1 of the cylindrical structure is deformed, the regular shape of the cylindrical structure is more conducive to operation, especially to enable the protective space to accommodate the monitoring mark part 502.

[0023] The cylindrical shape indicates that its cross-sectional shape is semicircular, which is a further limitation of the arc shape.

[0024] like Figure 6 , Figure 7 As shown, as an optional embodiment of the present invention, the protective body 1 is made of an elastic solid material, and the first protective part 101 and the second protective part 102 are also made of an elastic solid material and the two together form the cylindrical protective body 1.

[0025] Specifically, the elastic solid material includes PVC, rubber material, elastic material, etc. In practice, a PVC pipe is selected to make the protective body 1, one side is cut open, and the other side is not cut open. In this way, when it is not opened, it is closed. When opened, since it is made of an elastic fixed material, the end connecting the first protective part 101 and the second protective part 102 can also be bent, thereby causing the protective body 1 to deform. PVC pipes are easily available in the construction industry.

[0026] When this embodiment is applied in practice, an elastic fixing material is selected as the first protection part 101 and the second protection part 102, which can facilitate deformation and deformation recovery and has a certain rigidity, and plays a protective role when the monitoring mark part 502 is enclosed inside.

[0027] like Figure 2 , Figure 3 and Figure 4As shown, as an optional embodiment of the present invention, at least one of the two sides of the protective body 1 is open, and the concrete spraying monitoring point protection device also includes a shielding component, which is used to shield at least one side of the first protective part 101 and the second protective part 102 when the protective body 1 is in a non-deformed state, so as to form a closed protective space between the first protective part 101, the second protective part 102 and the shielding component.

[0028] Specifically, at least one of the two sides of the first protective part 101 and the second protective part 102 is set to be open. On the one hand, due to the material and shape of the protective body, when it is made of PVC pipe, its side is the opening of the pipe, so it is necessary to set a shielding component. On the other hand, the open side can allow the monitoring mark part 502 to enter and exit from the open side along the opening 3 when the protective body 1 is not deformed much, which is more convenient for operation. As for the shielding component, it can be the shielding part provided by the first protective part 101 and the second protective part 102, each shielding part is semicircular, and the two shielding parts are combined into a complete shielding part, which can be opened and closed as the protective body 1 is opened and closed.

[0029] When this embodiment is applied in practice, by setting at least one of the two sides common to the first protective part 101 and the second protective part 102 to be open and corresponding to the shielding component, it is more suitable for actual use, and takes into account the use of the material and shape of the protective body 1, and facilitates the monitoring of the marking part 502 entering and exiting the protection space.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, as an optional embodiment of the present invention, the shielding assembly includes a cover body 4, and the cover body 4 cooperates with at least one side of the open portion of the first protective part 101 and the second protective part 102 to cover the protective body 1 along the axial end of the protective body 1.

[0031] Specifically, the cover body 4 can be arranged on at least one side of the open first protective part 101 and the second protective part 102, and the edge of the cover body 4 can wrap around the protective body 1, or the edge of the cover body 4 can be embedded in the protective body 1 to cover the side of the open protective body 1. When the protective body 1 adopts a PVC pipe, the lid can adopt a plastic cover that matches it.

[0032] It should be noted that the monitoring mark portion 502 includes a small steel plate that can be kept parallel to the side of the protection body 1, that is, kept Figure 8In this way, when the shielding component does not work, for example, when the cover body 4 is not installed, the total station set up in the tunnel hole may also monitor the monitoring mark part 502 by emitting laser, so as to calculate the coordinates of the concrete spraying monitoring point 5.

[0033] When this embodiment is used in practice, the cover and the protective body 1 have matching sizes and can be directly embedded in the first protective part 101 and / or the second protective part 102, or can also be matched through threads. Generally, they can be embedded on them to provide side protection for the protective body 1 when spraying concrete.

[0034] like Figure 3 , Figure 4 and Figure 5 As shown, as an optional embodiment of the present invention, the opening 3 includes an avoidance slit 301 and a receiving hole 302 which are jointly opened at the other end of the first protective portion 101 and the other end of the second protective portion 102, and the avoidance slit 301 and the receiving hole 302 are connected, so the avoidance slit 301, the receiving hole 302 and the protective space are connected; The avoidance slit 301 is located on at least one side of the accommodating hole 302 , and extends from the edge of the accommodating hole 302 to the edge of the protective body 1 . The diameter of the accommodating hole 302 is smaller than the maximum size of the monitoring mark portion 502 .

[0035] Generally, the gap of the avoidance gap 301 is smaller than the thickness of the monitoring mark portion 502 and the support rod 501, so that even if the monitoring mark portion 502 is not parallel to the side of the protective body 1, the monitoring mark portion 502 can be engaged in the protective space of the protective body 1.

[0036] Specifically, the opening 3 is jointly opened on the first protective part 101 and the second protective part 102, and the two occupy half respectively. The accommodating hole 302 is arranged in the middle part, and the avoidance gap 301 is arranged on at least one side of the accommodating hole 302, and is preferably symmetrically arranged on both sides. The accommodating hole 302 is ultimately used to accommodate the support rod 501. The aperture of the accommodating hole 302 matches the diameter of the support rod 501, and can be slightly larger than that. When the accommodating hole 302 and the avoidance gap 301 are opened, that is, the opening 3 is opened, the monitoring mark part 502 can pass through from the top or the side to enter or exit the protection space.

[0037] When this embodiment is applied in practice, it is only necessary to open an avoidance hole at one end adjacent to the first protective part 101 and the second protective part 102, and the entry and exit of the monitoring mark part 502 can be realized by cooperating with the deformation of the protective body 1. It can be made with the help of discarded PVC, which is simple to make and convenient for subsequent operations.

[0038] like Figure 6 , Figure 7 and Figure 8 As shown, as an optional embodiment of the present invention, the operating member 2 is fixedly connected to the protective body 1, and there are at least two operating members 2 symmetrically arranged relative to the opening 3, that is, there is at least one on each of the first protective part 101 and the second protective part 102.

[0039] Specifically, one is provided on each of the first protection part 101 and the second protection part 102 . Of course, such a symmetrical arrangement facilitates operation and enables the first protection part 101 and the second protection part 102 to be evenly stressed.

[0040] It should be noted that one of the first protection part 101 and the second protection part 102 is not provided with the operating member 2, while the other is provided with the operating member 2. This is also theoretically feasible and can be operated by hand to deform the protection body 1.

[0041] As an optional embodiment of the present invention, the operating member 2 is respectively arranged on the first protective part 101 and the second protective part 102, and the operating member 2 includes a limiting nut and a screw 201, and the screw 201 is installed on the first protective part 101 and / or the second protective part 102 by the limiting nut.

[0042] Specifically, one operating member 2 can be provided and installed on the first protective part 101 or the second protective part 102. Preferably, when two operating members 2 are provided, the two are symmetrically arranged, and the screw rod 201 passes through the first protective part 101 and the second protective part 102 respectively, and the first limiting nut 202 and the second limiting nut 203 are respectively installed on the two ends of the screw rod 201 located at the first protective part 101 and the second protective part 102 for limiting. The screw rod 201 is set through and extends to one side, which can save effort, which is equivalent to increasing the force arm. The through setting can improve the strength and avoid the single-point contact force of the protective body 1.

[0043] Reference Figure 6 As an optional embodiment of the present invention, one end of the screw rod 201 is respectively connected to the first protective part 101 and the second protective part 102. When there are at least two screw rods 201 symmetrically arranged, the distance between the other ends of at least two of the screw rods 201 gradually increases along the direction away from the protective body 1.

[0044] Specifically, from Figure 6 It can be seen that at least two of the screw rods 201 are not arranged in parallel, and the distance between the other ends of the two screw rods 201 gradually increases in the direction away from the protective body 1, which is equivalent to increasing the torque. Figure 7As shown, applying force inwardly toward the ends of the two screw rods 201 makes it easier to deform the protective body 1 and open the opening 3, thereby achieving a labor-saving effect.

[0045] When this embodiment is applied in practice, the protective body 1 can be deformed by holding the operating part, and the protective body 1 can be restored to its original shape by releasing the operating part. The operation is very simple, thereby bringing convenience to disassembly and assembly.

[0046] like Figure 7 , Figure 8 As shown, the present invention also provides a method for disassembling and assembling a protective device for a sprayed concrete monitoring point, using the protective device for a sprayed concrete monitoring point as described in the above embodiment, comprising: By applying a force to the operating member 2, the protective body 1 is deformed, allowing the monitoring mark part 502 to enter the protective space of the protective body 1 through the opening 3, so that the protective space can protect the monitoring mark part 502, or the monitoring mark part 502 can exit the protective space through the opening 3.

[0047] When the embodiment of the present invention is applied in practice, before spraying concrete, it is only necessary to deform the protective body 1 so that the monitoring mark part 502 can enter the protective space through the opening 3, so that the protective space can protect the monitoring mark part 502. That is, after the spraying of concrete is completed, the protective body 1 is deformed so that the monitoring mark part 502 can exit the protective space through the opening 3. The operation is based on the aforementioned spraying concrete monitoring point 5 protection device, and the disassembly and assembly can be completed by relying on the deformation. The installation and disassembly are simple, and can provide reliable spraying concrete protection for actual applications, with strong practicality.

[0048] like Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, as an optional embodiment of the present invention, it also includes: By operating the screw 201, the first protection part 101 and the second protection part 102 are opened, so that the protection body 1 is deformed; Specifically, the end of the screw rod 201 is pressed away from the protective body 1 , and the two screw rods 201 are forced inward, or one screw rod 201 is held by hand and the protective body 1 is supported by the other hand, so that the protective body 1 is deformed and the opening 3 is opened.

[0049] Align the opening 3 with the monitoring mark portion 502, and allow the monitoring mark portion 502 to enter the protection space or exit the protection space through the opening 3; Specifically, when the accommodating hole 302 is aligned with the monitoring mark portion 502 from the top, the monitoring mark portion 502 can directly enter or exit the closed space from top to bottom or from bottom to top; when the accommodating hole 302 is aligned with the monitoring mark portion 502 from the side, the monitoring mark portion 502 can pass through the avoidance gap 301 and enter the accommodating hole 302 or exit from the accommodating hole 302, thereby enabling the monitoring mark portion 502 to enter the protection space or exit the protection space through the opening 3.

[0050] In the natural state, the monitoring mark part 502 is engaged in the protection space. Due to the influence of its own weight, the top of the monitoring mark part 502 contacts the inner top wall of the protection body 1, which is different from Figure 8 Status in.

[0051] After the opening 3 enters the protection space, the cover 4 is covered on the side of the first protection part 101 and / or the second protection part 102, or before the opening 3 exits the protection space, the cover 4 is removed from the first protection part 101 and / or the side of the first protection part 101.

[0052] Specifically, the cover body 4 needs to cover the side of the first protection part 101 and / or the second protection part 102 when in the protection state, and detach from the side of the first protection part 101 and / or the second protection part 102 when in the non-protection state.

[0053] The following is a detailed description of the steps based on the materials of the protective body 1 and the cover 4: Step S1: before spraying concrete, remove the covers 4 on both sides to protect the main body 1 including the PVC pipe, the cover 4 is a matching plastic cover that can cover the PVC pipe opening, and the outer edge of the cover 4 wraps the PVC pipe opening; Step S2: Grip the two screws 201 on the protection body 1 to open the protection body 1. The protection body 1 is a PVC tube, one side of which is cut open and the other side is not cut open. In this way, when it is not opened, it is closed; if the screws 201 are clamped, the cut side of the PVC tube body will open; if the screws 201 are loosened, the cut side of the protection body 1 will close; Step S3: Align the threaded steel bar with the hole on the protective body 1, and loosen the screw 201 after the monitoring mark part 502 is placed in the protective body 1. The layout of the tunnel monitoring and measuring point is to drive the steel bar behind the initial support of the tunnel. One end of the steel bar must enter the surrounding rock to a certain depth, and the other end cannot be covered by the shotcrete of the initial support, and a certain length must be exposed. Then, a small steel plate is welded at the lower end of the exposed steel bar head, and the steel plate with the reflective sticker constitutes the monitoring mark part 502 and is pasted on it. Therefore, the threaded steel bar here refers to the steel bar of the tunnel monitoring and measuring point, that is, the steel bar buried in the surrounding rock. When the threaded steel bar is directly aligned with the hole on the protective body 1, the opened protective body 1 will be closed by its own elastic force, and the small steel plate welded on the steel bar is below the accommodating hole 302. Since the small steel plate is wider than the steel bar, it can clamp the protective body 1 and will not fall off even during the concrete spraying process; Step S4: Cover the covers 4 on both sides of the protective body 1 to complete the installation; Step S5: After the concrete spraying is completed, the covers 4 on both sides of the protective body 1 are removed; Step S6: Grip the two screws 201 on the main body to open the protective main body 1; Step S7: remove the protective body 1, cover the cover 4, and recycle it for next use.

[0054] The above operation steps are simple and easy to disassemble and assemble. Moreover, the device can be recycled repeatedly. After removing the device once, the protective body 1 can be soaked in a cleaning liquid, thereby improving the practicability in actual concrete spraying.

[0055] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features invented herein.

[0056] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A protective device for sprayed concrete monitoring points, characterized in that: Used to protect the monitoring marking part (502) of the sprayed concrete monitoring point (5), comprising: A protective body (1), wherein a protective space is provided inside the protective body (1), and the protective body (1) is made of a deformable material; An operating member (2), the operating member (2) being arranged on the protective body (1), and the operating member (2) being used to deform the protective body (1) after receiving a force; The protective body (1) is provided with an opening (3), and the opening (3) is communicated with the protective space, so that after the protective body (1) is deformed, the monitoring mark part (502) enters or exits the protective space through the opening (3).

2. The spraying concrete monitoring point protection device according to claim 1 is characterized in that: The protective body (1) is made of elastic solid material.

3. The spraying concrete monitoring point protection device according to claim 2 is characterized in that: The protective body (1) comprises a first protective portion (101) and a second protective portion (102), wherein the first protective portion (101) and the second protective portion (102) form a protective body (1) of a cylindrical structure, and the opening (3) axially penetrates the protective body (1) of the cylindrical structure.

4. The spraying concrete monitoring point protection device according to claim 3 is characterized in that: At least one of the two sides of the protection body (1) is open, and the concrete spraying monitoring point protection device also includes a shielding component, which is used to shield at least one side of the first protection part (101) and the second protection part (102) when the protection body (1) is in a non-deformed state, so that a closed protection space is formed between the first protection part (101), the second protection part (102) and the shielding component.

5. The spraying concrete monitoring point protection device according to claim 4 is characterized in that: The shielding assembly comprises a cover body (4), wherein the cover body (4) cooperates with at least one open side of the first protective portion (101) and the second protective portion (102) to cover the protective body (1) along the axial end of the protective body (1).

6. The spraying concrete monitoring point protection device according to any one of claims 1 to 5, characterized in that: The opening (3) comprises an avoidance slit (301) and a receiving hole (302), the avoidance slit (301) and the receiving hole (302) being connected, and the avoidance slit (301) is located on at least one side of the receiving hole (302), the avoidance slit (301) extends from the edge of the receiving hole (302) to the edge of the protective body (1), and the diameter of the receiving hole (302) is smaller than the maximum size of the monitoring mark portion (502).

7. The spraying concrete monitoring point protection device according to any one of claims 1 to 5, characterized in that: The operating member (2) is fixedly connected to the protective body (1), and the operating members (2) are at least two and are symmetrically arranged relative to the opening (3).

8. The spraying concrete monitoring point protection device according to claim 7 is characterized in that: The operating member (2) comprises a screw rod (201), and the screw rod (201) is mounted on the first protection part (101) and the second protection part (102) in a position-limiting manner through a limit nut.

9. The spraying concrete monitoring point protection device according to claim 8, characterized in that: When there are at least two screw rods (201) symmetrically arranged, one end of at least two of the screw rods (201) is fixedly connected to the first protective portion (101) and the second protective portion (102) respectively, and the distance between the other ends of at least two of the screw rods (201) gradually increases in a direction away from the protective body (1).

10. A method for disassembling and assembling a protective device for a sprayed concrete monitoring point, characterized in that: The protective device for sprayed concrete monitoring point as claimed in any one of claims 1 to 9 comprises: By applying a force to the operating member (2), the protective body (1) is deformed, allowing the monitoring mark portion (502) to enter the protective space of the protective body (1) through the opening (3), so that the protective space provides protection for the monitoring mark portion (502), or allowing the monitoring mark portion (502) to exit the protective space through the opening (3).

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