A monitoring and protection device for a mixed jet

Abstract

The utility model discloses a kind of monitoring protective devices for mixed spraying, solve the problem that existing technology is not in place in tunnel monitoring equipment protection, cannot cope with mixed spraying rebound material damage dirty problem.The utility model includes internal protection component and outer layer protection component, internal protection component is located in outer layer protection component and is oppositely rotatable with outer layer protection component, internal protection component is equipped with inner layer observation window and is used to flush the flush component for inner layer observation window, outer layer protection component is equipped with outer layer observation window, outer layer observation window bottom is equipped with the slagging-off piece for the slagging-off of internal protection component outer wall.The utility model's protective device integrates three functions of mechanical scraping, fluid flushing and dynamic sealing, breaks through the limitation of traditional static protection, especially suitable for high splash, high-precision monitoring mixed spraying scene, effectively solve the problem that existing technology is not in place in tunnel monitoring equipment protection.

Description

Technical Field

[0001] This utility model relates to the field of tunnel spraying technology, and in particular to a monitoring and protection device for spraying. Background Technology

[0002] With the popularization and development of tunnel construction, tunnel boring equipment is also evolving towards automation and intelligence, leading to an increasing demand for tunnel equipment and environmental monitoring and scanning. The environment inside tunnels is particularly harsh, especially during full-face hard rock tunnel boring machine (TBM) construction, where there is a high level of dust, as well as risks of rockfalls and water inrush. Especially during shotcrete support, rebounding rocks and sand can cause mechanical damage to the scanning equipment, and dust and cement adhering to the scanning elements can prevent normal operation. The lenses of the monitoring and scanning equipment are exposed to the environment; without protection, they can not only become contaminated and obstructed but also potentially damage the environmental monitoring and scanning equipment itself.

[0003] In the prior art, Chinese utility model patent with authorization announcement number CN 211010611 U discloses a protective device for a surveillance camera in a tunnel. In use, the lifting motor is started to drive the threaded rod to rotate, which causes the lifting rod to lift the camera body. When it is lifted to a suitable position, the dust removal motor is started to drive the dust removal rotating rod and the drive gear to rotate, which causes the driven gear to drive the rotating disk to rotate. The rotating column drives the swing rod to swing on the swing shaft, so that the dust removal end and the brush at the upper end of the swing rod swing left and right to remove dust from the lens. The brush drives the lens surface to clean back and forth, which is convenient for cleaning the lens and saves a lot of time.

[0004] While the aforementioned patented technical solution can clean the lenses of surveillance cameras inside tunnels, the brush swing dust removal method is only suitable for dust removal work in ordinary environments and cannot meet the protection requirements of monitoring and scanning equipment in harsh environments, especially in dealing with problems such as damage and dirt caused by mixed spray rebound material. Utility Model Content

[0005] To address the shortcomings in the aforementioned background technology, this utility model proposes a monitoring and protection device for mixed spraying, which solves the problem that existing monitoring equipment for tunnels is inadequate in its protection and cannot cope with the damage and contamination caused by the rebound of mixed spraying material.

[0006] The technical solution of this utility model is implemented as follows: A monitoring and protection device for mixed spraying includes an inner protection component and an outer protection component. The inner protection component is located inside the outer protection component and is rotatably arranged relative to the outer protection component. The inner protection component is provided with an inner observation window and a flushing component for flushing the inner observation window. The outer protection component is provided with an outer observation window, and a scraper is provided at the bottom of the outer observation window for scraping sludge from the outer wall of the inner protection component. This utility model utilizes the flushing component to clean the dirt in the observation window in a timely manner, ensuring that the monitoring screen of the internal monitoring equipment is always clear; the scraper can promptly scrape the mud on the outer wall of the inner protection component, preventing mud accumulation from affecting the relative rotation of the inner protection component between the inner and outer protection components, and ensuring that the monitoring equipment operates normally during the spraying process.

[0007] In a further preferred embodiment, a second sealing element is provided between the inner protective component and the outer protective component to ensure sealing between the two, and a drive component is provided on the outer protective component to drive the inner protective component to rotate; the drive component drives the inner protective component to rotate, so as to realize the wide-range detection of the monitoring equipment inside the inner protective component.

[0008] In a further preferred embodiment, the drive assembly includes a drive plate connected to one side of the outer protective assembly, a drive motor mounted on the drive plate, and a transmission shaft mounted on one side of the inner protective assembly. The transmission shaft passes through the outer protective assembly and is connected to the drive motor for power transmission. The drive motor provides power for the rotation of the inner protective assembly.

[0009] Further preferably, a positioning shaft is provided on the other side of the internal protective component. The positioning shaft is coaxially arranged with the transmission shaft and cooperates with the positioning groove provided in the outer protective component to ensure the stability of the rotation of the internal protective component.

[0010] Further optimized, the internal protective assembly includes an inner housing and a front cover sealed to the inner housing. A mounting bracket is located within the inner housing, and a monitoring device corresponding to the inner observation window is mounted on the bracket. The inner observation window is fitted with a sealed glass panel. The camera of the monitoring device faces the inner observation window, and the sealed glass ensures a clear image while also providing a seal.

[0011] Further optimization involves a sealing ring between the front cover and the inner housing to improve overall sealing; a flushing component is located on the upper part of the inner housing; and it is stationary relative to the inner housing to ensure timely and accurate cleaning of the sealed glass.

[0012] In a further preferred embodiment, the flushing assembly includes a flushing block disposed on the upper part of the inner housing, the flushing block having nozzles facing the inner observation window, and a flushing pipe connected to the rear of the nozzles. The flushing pipe can be connected to an air source or a water source to flush the inner observation window with high-pressure air or water, thereby improving flushing efficiency.

[0013] Further preferred, the outer protective component includes an outer protective cover, a first sealing element is provided between the outer protective cover and the inner shell, an outer observation window is opened on the outer wall of the outer protective cover, and a scraper is provided on the inner side of the outer protective cover; during the rotation of the inner shell, the scraper removes mud and sludge from the outer wall of the inner shell to ensure the reliability of the rotation of the inner shell.

[0014] Further preferably, the scraper is a fixed scraper, which includes a scraper plate fixedly mounted on the inner wall of the outer protective cover, and the scraper plate can contact the inner shell. Using a fixed scraper allows for direct contact scraping of the regularly shaped inner shell, improving scraping efficiency.

[0015] Further preferably, the scraper is a floating scraper, which includes a scraper plate with a positioning post on its back. The positioning post engages with a guide groove located inside the outer protective cover. A spring is provided between the scraper plate and the inner wall of the outer protective cover, and the spring is sleeved on the positioning post. The floating scraper effectively removes sludge of varying thicknesses, avoiding mechanical damage to the inner shell.

[0016] The beneficial effects of this utility model are as follows: The rotational movement of the inner and outer protective components not only provides a wider monitoring range but also allows for retraction for protection when not in operation. Simultaneously, it enables the device to adapt to multi-directional splashes, avoiding localized wear caused by unidirectional scouring. The rotating scraper design, when the outer component is fixed, allows the inner component to continuously scrape away slag or dust adhering to the outer wall of the inner layer, preventing accumulation and obstruction of vision. The scouring component works in tandem: the scouring component equipped on the inner observation window can remove contaminants from the inner window itself in real time, ensuring a consistently clear monitoring image; thus adapting to complex construction environments.

[0017] This utility model's protective device integrates three functions: mechanical scraping, fluid flushing, and dynamic sealing. It breaks through the limitations of traditional static protection and is especially suitable for mixed spraying scenarios with high splashing and high-precision monitoring. It achieves a balance between protection, continuous operation capability, and ease of maintenance. It effectively solves the problem that existing tunnel monitoring equipment cannot adequately protect against damage and contamination from mixed spraying rebound material. It provides effective protection for the monitoring system to prevent damage. When contamination occurs, it can be promptly removed through the flushing device and scraper, ensuring the system's practicality and reliability. Attached Figure Description

[0018] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the internal protection components; Figure 3 This is a schematic diagram of the internal protection components; Figure 4 This is a schematic diagram of the non-working state of this utility model; Figure 5 This is a schematic diagram of the working state of this utility model; Figure 6 This is a schematic diagram of the overall internal structure of this utility model; Figure 7 This is a schematic diagram of the slag scraper in Example 4. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1, such as Figure 1 As shown, a monitoring and protection device for mixed spraying includes an inner protection component 1 and an outer protection component 2, both of which protect the internal monitoring equipment. In this embodiment, the inner protection component 1 is located inside the outer protection component 2 and is rotatably arranged relative to the outer protection component 2. It should be noted that there are two ways in which the inner protection component 1 and the outer protection component 2 are rotatably arranged relative to each other: the first is that the inner protection component 1 acts as a rotating component and the outer protection component 2 acts as a fixed component; the second is that the inner protection component 1 acts as a fixed component and the outer protection component 2 acts as a rotating component. In this embodiment, the first method is preferred. The inner protection component 1 is provided with an inner observation window 110 and a flushing component for flushing the inner observation window 110; the flushing component can clean the dirt in the observation window in a timely manner to ensure the clarity of the monitoring screen. The outer protection component 2 is provided with an outer observation window 25, and a scraper is provided at the bottom of the outer observation window 25 for scraping the outer wall of the inner protection component 1; the scraper is used to scrape the mud and sludge on the outer wall of the inner protection component. The outer protective layer first blocks external contaminants such as high-speed particles, metal splashes, and coolant, and withstands the main impacts and wear, extending the life of internal precision components. The inner protective layer acts as a second barrier, preventing small amounts of fine particles or corrosive gases that penetrate the outer layer from directly contacting the lens, thus providing secondary protection. This dual protection isolates contamination and damage, ensuring the reliability of the monitoring equipment used in mixed spraying operations in tunnels.

[0022] In this preferred embodiment, a second sealing element 24 is provided between the inner protective component 1 and the outer protective component 2. The number of second sealing elements can be increased as needed to improve the sealing performance between the inner and outer protective components 1 and 2. The outer protective component 2 is equipped with a drive component 3 that drives the inner protective component 1 to rotate. The second sealing element 24 is directly sandwiched between the inner and outer layers, forming an annular static sealing band. The drive component 3 is located entirely outside the outer layer and does not occupy the radial or axial space between the inner and outer layers. Results: The overall outer diameter of the device can be made smaller; the sealing element is not squeezed by the drive component, resulting in a longer lifespan; no dynamic sealing element is needed when disassembling or assembling the motor or reducer, and maintenance does not interfere with each other. The inner protective component can rotate at a certain angle under the drive of the rotation drive component. The outer protective component is provided with an outer observation window. The monitoring device lens is misaligned with the outer observation window for effective protection. When the monitoring system needs to operate, the monitoring device is rotated so that the lens faces the outer observation window.

[0023] Example 2, as Figure 6 As shown, a monitoring and protection device for mixed spraying is further optimized based on Embodiment 1. In this embodiment, the drive component 3 includes a drive plate 32 connected to one side of the outer protective component 2, providing support for the drive motor. A drive motor 31 is mounted on the drive plate 32, providing power for the rotation of the inner protective component 1. A transmission shaft 111 is provided on one side of the inner protective component 1, passing through the outer protective component 2 and connected to the drive motor 31. In actual use, the transmission shaft can be connected to the outer protective component 2 using bearing components to ensure rotational stability. A positioning shaft 112 is provided on the other side of the inner protective component 1, coaxially arranged with the transmission shaft 111, making the rotation of the inner protective component smoother and improving the accuracy of data acquisition by the monitoring equipment. The positioning shaft 112 cooperates with a positioning groove 26 located within the outer protective component 2. The positioning groove provides stable support for the positioning shaft, and corresponding bearing components can be installed between the positioning shaft and the positioning groove to ensure the stability of the positioning shaft's rotation. Figure 4 , 5 As shown, the drive motor is used to drive the inner protective component to rotate relative to the outer protective component, which is used to switch between working and non-working states. In the working state, the lens should face the outer observation window. In the non-working state, the lens should face away from the outer observation window to avoid mud contamination.

[0024] like Figure 2As shown, in this embodiment, the internal protective component 1 includes an inner housing 11 and a front cover 15 sealed to the inner housing 11. The front cover is used to seal the inner housing and provide a mounting point for the sealing glass. A mounting bracket 12 is provided inside the inner housing 11, and a monitoring device 13 corresponding to the inner observation window 110 is mounted on the mounting bracket 12. The monitoring device can use a camera for image acquisition. A sealing glass 16 is provided on the inner observation window 110, which ensures a clear image while also providing a seal. A sealing ring 14 is provided between the front cover 15 and the inner housing 11 to improve the overall sealing performance of the internal protective component and prevent mud and dirt from contaminating the monitoring device.

[0025] In this embodiment, as a preferred solution, such as Figure 3 As shown, the flushing assembly is located on the upper part of the inner housing 11; it rotates synchronously with the inner housing to ensure timely cleaning of sludge on the sealing glass 16. Specifically, the flushing assembly includes a flushing block 17 located on the upper part of the inner housing 11. The flushing block is connected to the upper part of the inner housing by bolts, providing support for the nozzles. The flushing block 17 is provided with nozzles 18 facing the inner observation window 110, and a flushing pipe 19 is connected to the rear of the nozzles 18. The number of nozzles can be set to one or more as needed; in this embodiment, three are used as an example to ensure that the flushing range covers the entire sealing glass. The flushing pipe can be connected to an air source or a water source to perform high-pressure air flushing or high-pressure water flushing on the inner observation window, improving flushing efficiency.

[0026] In this embodiment, the outer protective component 2 includes an outer protective cover 21. A first sealing element, which can be a sealing strip, is provided between the outer protective cover 21 and the inner shell 11, forming multiple seals between the outer protective cover 21 and the inner shell 11. This seals prevent splashes, coolant, dust, etc., from entering the outer cavity. An outer observation window 25 is located on the outer wall of the outer protective cover 21, and a scraper is located on the inner side of the outer protective cover 21. When the outer component is fixed, the rotation of the inner component causes the scraper to continuously scrape away slag, dust, or mud adhering to the outer wall of the inner layer, preventing accumulation and obstruction of vision. Compared to traditional static protective covers that require frequent manual cleaning, this significantly reduces downtime for maintenance. This device integrates mechanical scraping, fluid flushing, and dynamic sealing functions, overcoming the limitations of traditional static protection. It is particularly suitable for mixed spraying scenarios with high temperature, high splash, and high-precision monitoring, achieving a balance between protection, continuous operation capability, and ease of maintenance.

[0027] Example 3 provides a monitoring and protection device for mixed spraying, further optimized from Example 2. In this example, the scraper is a fixed scraper, comprising a scraper plate 22 fixedly mounted on the inner wall of the outer protective cover 21, which can contact the inner housing 11. That is, in this example, the scraper plate uses a single fixed piece, eliminating hinges, pins, torsion springs, and other easily jammed components; the high dust and humidity in the spraying area have almost zero impact on it, improving its reliability.

[0028] Example 4, as Figure 7 As shown, a monitoring and protection device for mixed spraying is further optimized based on Embodiment 2. In this embodiment, the slag scraper is a floating slag scraper, which includes a scraper plate 22. A positioning post 23 is provided on the back of the scraper plate 22. The positioning post 23 is inserted into a guide groove 27 opened in the outer protective cover 21, and the two have a certain floating space. A spring 28 is provided between the scraper plate 22 and the inner wall of the outer protective cover 21, and the spring 28 is sleeved on the positioning post 23. The scraper of the floating slag scraper can move forward and backward with the undulation of dirt on the outer circle of the inner shell 11, which has strong applicability, more thorough slag scraping, and reduces mechanical scratches on the inner shell, while also reducing the wear of the scraper blade edge.

[0029] The rotational movement of the inner and outer components of this invention provides a wider monitoring range and allows for retraction for protection when not in operation. It also enables the device to adapt to multi-directional splashes, avoiding localized wear caused by unidirectional scouring. The rotating scraper design, when the outer component is fixed, allows the inner component to continuously scrape away slag or dust adhering to the outer wall of the inner layer, preventing accumulation and obstruction of vision. The flushing component works in conjunction: the flushing component equipped on the inner observation window can remove contaminants from the inner window itself in real time, ensuring a consistently clear monitoring image. This adapts to complex construction environments. In actual construction, the mixed spraying monitoring and protection device of this invention can be symmetrically arranged on the left and right sides of the rotary trolley, or centrally arranged on the shotcrete trolley, or placed on the non-moving mechanism of the mixed spraying system. It is highly adaptable, effectively protecting the monitoring system from damage. When dirt appears, it can be promptly cleaned by the flushing device and scraper, ensuring the system's practicality and reliability.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A monitoring and protection device for mixed spraying, characterized in that: It includes an inner protective component (1) and an outer protective component (2). The inner protective component (1) is located inside the outer protective component (2) and is rotatably arranged relative to the outer protective component (2). The inner protective component (1) is provided with an inner observation window (110) and a flushing component for flushing the inner observation window (110). The outer protective component (2) is provided with an outer observation window (25). The bottom of the outer observation window (25) is provided with a scraper for scraping the outer wall of the inner protective component (1).

2. The monitoring and protection device for mixed spraying according to claim 1, characterized in that: A second seal (24) is provided between the inner protective component (1) and the outer protective component (2), and a drive component (3) is provided on the outer protective component (2) to drive the inner protective component (1) to rotate.

3. The monitoring and protection device for mixed spraying according to claim 2, characterized in that: The drive assembly (3) includes a drive plate (32) connected to one side of the outer protective assembly (2), a drive motor (31) is provided on the drive plate (32), and a transmission shaft (111) is provided on one side of the inner protective assembly (1). The transmission shaft (111) passes through the outer protective assembly (2) and is connected to the drive motor (31) for transmission.

4. The monitoring and protection device for mixed spraying according to claim 3, characterized in that: The other side of the internal protective component (1) is provided with a positioning shaft (112), which is coaxially arranged with the transmission shaft (111) and the positioning shaft (112) cooperates with the positioning groove (26) provided in the outer protective component (2).

5. The monitoring and protection device for mixed spraying according to any one of claims 1 to 4, characterized in that: The internal protective component (1) includes an inner shell (11) and a front cover (15) that is sealed to the inner shell (11). The inner shell (11) is provided with a mounting bracket (12). The mounting bracket (12) is provided with a monitoring device (13) corresponding to the inner observation window (110). The inner observation window (110) is provided with a sealed glass (16).

6. The monitoring and protection device for mixed spraying according to claim 5, characterized in that: A sealing ring (14) is provided between the front cover (15) and the inner shell (11); the flushing assembly is located on the upper part of the inner shell (11).

7. The monitoring and protection device for mixed spraying according to claim 6, characterized in that: The flushing assembly includes a flushing block (17) disposed on the upper part of the inner housing (11), the flushing block (17) having a nozzle (18) facing the inner observation window (110), and a flushing pipe (19) connected to the rear of the nozzle (18).

8. The monitoring and protection device for mixed spraying according to claim 6 or 7, characterized in that: The outer protective component (2) includes an outer protective cover (21), a first sealing element is provided between the outer protective cover (21) and the inner shell (11), an outer observation window (25) is opened on the outer wall of the outer protective cover (21), and a scraper is provided on the inner side of the outer protective cover (21).

9. The monitoring and protection device for mixed spraying according to claim 8, characterized in that: The scraper is a fixed scraper, which includes a scraper plate (22) fixedly installed on the inner wall of the outer protective cover (21). The scraper plate (22) can contact the inner shell (11).

10. The monitoring and protection device for mixed spraying according to claim 8, characterized in that: The slag scraper is a floating slag scraper, which includes a slag scraper (22). The back of the slag scraper (22) is provided with a positioning post (23). The positioning post (23) is inserted into the guide groove (27) opened in the outer protective cover (21). A spring (28) is provided between the slag scraper (22) and the inner wall of the outer protective cover (21). The spring (28) is sleeved on the positioning post (23).

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