Explosion-proof man-machine interface device for mine

Abstract

The utility model relates to the technical field of explosion -proof electrical equipment discloses mining explosion -proof man -machine interface device, and the device includes box, protective cover and touch -sensitive screen, and it sets up composite sealing assembly and quick mounting assembly. Sealing assembly sets up mutually matched first, second U type sealing ring and square sealing ring between box and protective cover, and forms multiple reliable seals after fixed bolt compression, can effectively prevent dust and moisture invasion. The mounting assembly realizes the convenient installation and firm fixing of touch -sensitive screen through the sliding cooperation of guide rail and sliding slot and the locking mechanism of knob screw rod. The utility model solves the problem of the insufficient sealing of the existing device and the complicated installation through the above structure, has the advantages of high sealing reliability, strong dustproof and moistureproof capacity, and the installation and maintenance efficiency are improved significantly, and firm.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof electrical equipment technology, and in particular to a mine explosion-proof human-machine interface device. Background Technology

[0002] With the development of automation technology, human-machine interface devices, especially those with touchscreens, are increasingly widely used in industrial settings such as underground coal mines. To ensure the safe operation of these sophisticated electronic devices in harsh environments filled with explosive gases and dust, they typically need to be installed in robust explosion-proof enclosures.

[0003] This type of enclosure typically consists of a housing and a protective cover for opening and maintenance. The sealing performance between the housing and the cover is crucial to the long-term reliable operation of the equipment. Current technology usually employs a single sealing ring at the joint surface between the housing and the cover to achieve sealing. However, the underground mining environment is extremely harsh, with abundant coal dust and moisture, and the equipment may also be subjected to vibration and impact. Under these conditions, a single-seal structure provides only one layer of protection, and its long-term reliability is challenged. Once the sealing ring is damaged due to aging, deformation, or repeated disassembly and maintenance, a seal failure point will form, allowing external dust and moisture to intrude. This can damage internal electronic components or even lead to serious safety accidents. This single sealing structure lacks sufficient redundancy and robustness, making it difficult to meet the extreme requirements of mining equipment for high safety and long-term stable operation.

[0004] Therefore, this utility model proposes a mine explosion-proof human-machine interface device to overcome the shortcomings of the prior art. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a mine explosion-proof human-machine interface device, which aims to improve the problems of simple sealing structure, poor reliability, and cumbersome and inefficient touch screen installation process in the existing mine explosion-proof human-machine interface devices.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A mine explosion-proof human-machine interface device includes: a housing, a protective cover, a touch screen, fixing bolts; and a sealing component.

[0007] The sealing assembly includes a first U-shaped sealing ring, a second U-shaped sealing ring, and a square sealing ring.

[0008] Furthermore, mounting grooves are provided on the mating surfaces of the housing and the protective cover. The first U-shaped sealing ring and the second U-shaped sealing ring are respectively installed in the corresponding mounting grooves. U-shaped grooves are provided on the opposite sides of the two U-shaped sealing rings. The square sealing ring is clamped in the receiving space formed by the two U-shaped grooves. Finally, the protective cover is fastened to the housing by the fixing bolts to apply pressure to the sealing assembly to form a reliable seal.

[0009] Preferably, the explosion-proof human-machine interface device for mining further includes an installation component for quickly installing the touch screen. The installation component includes a guide rail disposed on the protective cover and a sliding groove disposed on the touch screen and slidingly engaging with the guide rail.

[0010] Preferably, the mounting assembly further includes a screw that is coaxially linked with the knob; the touch screen is provided with a circular groove for the end of the screw to engage.

[0011] Preferably, the screw is further provided with a washer, which is used to press the surface of the guide rail when the screw is locked.

[0012] Preferably, the screw is further provided with a connecting sleeve, which is sleeved on the screw and abuts against the touch screen.

[0013] Preferably, the protective cover is also provided with an observation window.

[0014] Preferably, as a specific embodiment, the first U-shaped sealing ring is installed in the mounting groove of the protective cover plate, and the second U-shaped sealing ring is installed in the mounting groove of the housing.

[0015] Preferably, the mounting assembly is used to detachably secure the touchscreen to the bottom of the protective cover.

[0016] This utility model has the following beneficial effects: 1. In this utility model, by setting a guide rail and a sliding groove to slide together, and using a screw driven by a knob to lock into the circular groove of the touch screen, the installation component solves the problems of complex, time-consuming and unreliable installation process of the touch screen in the prior art. It achieves the technical effects of fast installation, convenient disassembly and stable locking, and greatly improves the efficiency of on-site installation and maintenance.

[0017] 2. In this utility model, a composite sealing component consisting of two U-shaped sealing rings clamping a square sealing ring is set between the box and the protective cover, and the clamping force is provided by the fixing bolts. This solves the problem of the single sealing structure and insufficient sealing performance in the prior art, which makes it difficult to cope with the harsh environment of high dust and high humidity in mines. It achieves the technical effect of multiple sealing and high reliability, and can effectively prevent explosive dust and moisture from entering the equipment, thus ensuring the safe and stable operation of the device. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the explosion-proof human-machine interface device for mining proposed in this utility model. Figure 2 This is a schematic diagram of the sealing assembly of the explosion-proof human-machine interface device for mining proposed in this utility model; Figure 3 This is a schematic diagram of the installation components of the explosion-proof human-machine interface device for mining proposed in this utility model; Figure 4 An exploded view of the screw of the explosion-proof human-machine interface device for mining proposed in this utility model; Figure 5 This is a schematic diagram of the circular groove in the explosion-proof human-machine interface device for mining proposed in this utility model.

[0019] Legend: 1. Housing; 2. Protective cover; 3. Touch screen; 4. Fixing bolts; 5. Observation window; 6. Sealing assembly; 601. Mounting groove; 602. First U-shaped sealing ring; 603. U-shaped groove; 604. Square sealing ring; 605. Second U-shaped sealing ring; 7. Mounting assembly; 701. Guide rail; 702. Slide groove; 703. Knob; 704. Screw; 705. Washer; 706. Connecting sleeve; 707. Circular groove. 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: Please refer to the appendix. Figure 1 -Appendix Figure 5 This utility model provides a mine explosion-proof human-machine interface device, which aims to solve the problems of low installation efficiency, simple sealing structure and poor reliability of existing human-machine interface devices.

[0022] The explosion-proof human-machine interface device for mining includes a housing 1 and a protective cover 2 that is detachably installed on the housing 1. A touch screen 3 is installed on the protective cover 2. Multiple fixing bolts 4 pass through the protective cover 2 and are threadedly connected to the housing 1 to fasten the protective cover 2 to the housing 1. A sealing component 6 is provided between the housing 1 and the protective cover 2 to achieve a highly reliable seal between the two.

[0023] Specifically, both the housing 1 and the protective cover 2 have mounting grooves 601 on their mating surfaces to accommodate the sealing assembly 6. The sealing assembly 6 includes a first U-shaped sealing ring 602, a second U-shaped sealing ring 605, and a square sealing ring 604. The first U-shaped sealing ring 602 is installed in the mounting groove 601 of the protective cover 2, and the second U-shaped sealing ring 605 is installed in the mounting groove 601 of the housing 1. U-shaped grooves 603 are provided on the opposite sides of the first U-shaped sealing ring 602 and the second U-shaped sealing ring 605. The square sealing ring 604 is clamped in the accommodating space formed by the two U-shaped grooves 603. When the fixing bolts 4 lock the protective cover 2 and the housing 1, the first U-shaped sealing ring 602 and the second U-shaped sealing ring 605 squeeze each other and work together on the square sealing ring 604, thereby forming a composite sealing barrier.

[0024] To achieve convenient installation and reliable fixation of the touch screen 3, the core of the technical solution in this embodiment is that the mine explosion-proof human-machine interface device also includes a set of installation components 7, and the installation components 7 form a specific sliding fit and locking connection relationship between the protective cover plate 2 and the touch screen 3.

[0025] Specifically, the mounting component 7 includes a guide rail 701 disposed at the bottom of the protective cover plate 2 and a sliding groove 702 formed on both sides of the touch screen 3. The cross-sectional shape of the sliding groove 702 is adapted to the cross-sectional shape of the guide rail 701, so that the touch screen 3 can be quickly installed or removed from the protective cover plate 2 through the sliding connection between the sliding groove 702 and the guide rail 701.

[0026] To lock the touchscreen 3 in place, the mounting assembly 7 further includes a knob 703 and a screw 704 coaxially linked with the knob 703. The touchscreen 3 has a corresponding circular groove 707 for the end of the screw 704 to engage. A connecting sleeve 706 is fitted on the screw 704. The connecting sleeve 706 is used to increase the contact area between the screw 704 and the touchscreen 3 to ensure a stable connection during rotation. After the screw 704 passes through the connecting sleeve 706, a washer 705 is also provided. When the knob 703 is rotated, the screw 704 screws in and engages with the circular groove 707. At the same time, the end face of the washer 705 presses against the surface of the guide rail 701. Through this combination of threaded locking and friction self-locking, the touchscreen 3 is firmly fixed to the protective cover 2, achieving quick installation and reliable connection.

[0027] In addition, to facilitate real-time monitoring of the working status inside the enclosure 1, an observation window 5 is integrally formed on the protective cover 2.

[0028] Based on the above embodiments, the present invention may further include the following preferred technical solutions: In a preferred embodiment, to make the installation and positioning of the sealing component 6 more precise, the first U-shaped sealing ring 602 is specifically installed in the mounting groove 601 of the protective cover plate 2, while the second U-shaped sealing ring 605 is installed in the mounting groove 601 of the housing 1. This separate installation method ensures that the two U-shaped sealing rings can be precisely aligned when the protective cover plate 2 and the housing 1 are closed, providing a structural basis for forming a reliable seal.

[0029] As another preferred embodiment, in order to specifically define the installation position and method of the touch screen 3, the installation component 7 is configured to detachably fix the touch screen 3 to the bottom of the protective cover 2, so that the display surface of the touch screen 3 faces the outside of the housing 1, which is convenient for users to operate and observe, and also allows the main body of the touch screen 3 to be protected by the protective cover 2.

[0030] As another preferred embodiment, in order to facilitate the user to monitor the internal condition of the enclosure 1 without disassembling the equipment, an observation window 5 is also provided on the protective cover 2. The observation window 5 is preferably made of explosion-proof tempered glass and is sealed and fixed to the protective cover 2. The user can directly observe the working status of the touch screen 3 or the operation status of other electronic components inside the enclosure 1 through the observation window 5.

[0031] Working principle: When installing the touch screen 3, first align the slide groove 702 of the touch screen 3 with the guide rail 701 of the protective cover plate 2, and push it smoothly into the predetermined position along the guide rail 701. Then, turn the knob 703, which drives the screw 704 to rotate. The end of the screw 704 is then screwed into and locked inside the circular groove 707 of the touch screen 3. During this process, the washer 705 on the screw 704 will simultaneously press against and squeeze the surface of the guide rail 701, while the connecting sleeve 706 ensures stable contact during the rotation force application process. Through this sliding insertion and rotation locking method, the touch screen 3 is quickly installed and reliably fixed.

[0032] When assembling the entire device, the first U-shaped sealing ring 602 and the second U-shaped sealing ring 605 are first placed in the mounting grooves 601 of the protective cover plate 2 and the housing 1, respectively. Then, the square sealing ring 604 is placed between the U-shaped grooves 603 between the first U-shaped sealing ring 602 and the second U-shaped sealing ring 605. Then, the protective cover plate 2 is placed on the housing 1 and the fixing bolts 4 are tightened. Under the axial tightening force of the fixing bolts 4, the first U-shaped sealing ring 602 and the second U-shaped sealing ring 605 not only deform under pressure to fill the mounting grooves 601, but also squeeze the square sealing ring 604 in the middle from both sides, so that it fully fills the gap between the two U-shaped grooves 603. This composite sealing structure formed by the synergistic action of the three sealing components greatly improves the overall sealing performance of the device and effectively prevents dust and moisture from entering in the mine environment.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 mine-use explosion-proof human-machine interface device, comprising: Box (1); A protective cover (2) is detachably installed on the box body (1). Touch screen (3) is installed on the protective cover (2); Its features are, The mounting groove (601) is provided on the joint surface of the box body (1) and the protective cover plate (2). The device further includes a sealing assembly (6), the sealing assembly (6) comprising: A first U-shaped sealing ring (602) and a second U-shaped sealing ring (605) are respectively installed in the mounting groove (601), and U-shaped grooves (603) are provided on opposite sides of the first U-shaped sealing ring (602) and the second U-shaped sealing ring (605). And a square sealing ring (604), which is held in a receiving space formed by two opposing U-shaped grooves (603); The device also includes fixing bolts (4) for fastening the protective cover (2) to the housing (1) so that the sealing assembly (6) is sealed under pressure.

2. The explosion-proof human-machine interface device for mining as described in claim 1, characterized in that: The device further includes an installation component (7) for quickly installing the touch screen (3); the installation component (7) includes a guide rail (701) disposed on the protective cover plate (2) and a slide groove (702) disposed on the touch screen (3) and slidingly engaging with the guide rail (701).

3. The explosion-proof human-machine interface device for mining as described in claim 2, characterized in that: The mounting assembly (7) also includes a knob (703) and a screw (704) that is coaxially linked with the knob (703); the touch screen (3) is provided with a circular groove (707) for the end of the screw (704) to engage.

4. The explosion-proof human-machine interface device for mining as described in claim 3, characterized in that: The screw (704) is also provided with a washer (705), which is used to press the surface of the guide rail (701) when the screw (704) is locked.

5. The explosion-proof human-machine interface device for mining as described in claim 4, characterized in that: The screw (704) is also provided with a connecting sleeve (706), which is sleeved on the screw (704) and abuts against the touch screen (3).

6. The explosion-proof human-machine interface device for mining as described in claim 1, characterized in that: The protective cover (2) is also provided with an observation window (5).

7. The explosion-proof human-machine interface device for mining as described in claim 1, characterized in that: The first U-shaped sealing ring (602) is installed in the mounting groove (601) of the protective cover plate (2), and the second U-shaped sealing ring (605) is installed in the mounting groove (601) of the box body (1).

8. The explosion-proof human-machine interface device for mining according to claim 2, characterized in that: The mounting component (7) is used to detachably fix the touch screen (3) to the bottom of the protective cover (2).

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