Mining intrinsic safety type repeater

Abstract

The utility model discloses a mining intrinsic safety type repeater, which comprises a fixed plate, a repeater main body, an antenna and a limiting device, and is characterized in that the repeater main body is arranged on the fixed plate; a groove is formed in the top of the repeater main body, a connector is arranged in the groove, and a stop block is arranged at the corner of the top of the groove; a threaded head is arranged at the bottom of the antenna and is in threaded connection with the connector; the limiting device comprises a moving plate, an elastic structure, a limiting sleeve and a cover plate, and the moving plate is connected with the bottom of the groove through the elastic structure so that the moving plate can abut against the stopping block; the limiting sleeve is embedded in the movable plate and arranged outside the threaded head in a sleeving mode. The cover plate is arranged on the limiting sleeve in an openable and closable mode. According to the utility model, the threaded head is limited through the limiting sleeve, the antenna and the connector can be effectively prevented from loosening when the vibration in a mine is large, and the cover plate capable of being opened and closed is arranged on the movable plate, so that coal ash can be prevented from entering when the connector is exposed, and the stability and continuity of communication signals are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of repeaters, in particular to an intrinsically safe repeater for mines. Background Art

[0002] A repeater is a network device that works at the physical layer. It is mainly used to extend the transmission distance of network signals and ensure the stability and continuity of communication signals.

[0003] In the related art, the antenna connection of the repeater is usually achieved by threading the antenna and the connector of the repeater to avoid signal attenuation caused by poor contact between the antenna and the connector, thereby affecting the communication quality.

[0004] However, in the special usage scenario of mining, the antenna signal of the repeater will often experience signal attenuation after long-term use, affecting the communication quality. For example, the machine vibration in the mine is relatively frequent, which can easily cause the connection between the antenna and the connector to loosen, reducing the stability of the connection between the antenna and the connector, causing impedance discontinuity on the signal transmission path, causing reflection, weakening the signal strength, and even causing signal distortion.

[0005] In addition, when the antenna is disassembled, the connector of the repeater is exposed. In addition, there is a lot of coal dust in the mine. After multiple disassembly and maintenance, dust is easily accumulated in the connector, which will affect the radiation efficiency and receiving sensitivity of the antenna, and also cause the signal strength to weaken, thereby causing signal attenuation. Summary of the invention

[0006] The utility model aims to solve one of the technical problems in the above-mentioned technology at least to a certain extent.

[0007] To achieve the above-mentioned purpose, the first aspect of the utility model proposes a mining intrinsically safe repeater, comprising: a fixing plate, a repeater body, an antenna and a limiting device, wherein the repeater body is arranged on the fixing plate; a groove is downwardly opened at the top of the repeater body, a connecting head is arranged in the groove, and a blocking block is arranged at the top corner of the groove; a threaded head is arranged at the bottom of the antenna, and the threaded head is threadedly connected to the connecting head; the limiting device is arranged in the groove, and the limiting device comprises a movable plate, an elastic structure, a limiting sleeve and a cover plate, wherein the movable plate is arranged in the groove and is connected to the bottom of the groove through the elastic structure, so that the movable plate abuts against the blocking block; the limiting sleeve is embedded in the movable plate and is sleeved outside the threaded head; the cover plate can be opened and closed and is arranged on the limiting sleeve.

[0008] In addition, the intrinsically safe repeater for mining proposed in the utility model may also have the following additional technical features:

[0009] As a further description of the above technical solution: the elastic structure includes a column, a limit head and a spring, wherein a through hole is downwardly opened at the bottom of the groove; one end of the column is connected to the movable plate, and the other end slides through the through hole and extends forward; the limit head is arranged at the extended end of the column; the spring is sleeved on the column, and the two ends of the spring are respectively connected to the bottom of the groove and the limit head.

[0010] As a further description of the above technical solution: pivotable support frames are respectively arranged at the four corners of the fixing plate and are respectively locked by damping knobs, and a mounting hole is opened on the side of the support frame away from the pivot end.

[0011] As a further description of the above technical solution: the side edges of the movable plate are respectively fitted with the inner walls of the groove.

[0012] As a further description of the above technical solution: an articulated frame is arranged beside the limiting sleeve, and the articulated frame is arranged on the movable plate, and the cover plate is hingedly connected to the articulated frame.

[0013] As a further description of the above technical solution: the inner cavity shape of the limiting sleeve matches the shape of the thread head.

[0014] According to the utility model of the intrinsically safe repeater for mining, the threaded head of the antenna is limited by a limiting sleeve, which can effectively prevent the antenna and the connector from loosening when there is large vibration in the mine. In addition, by arranging an openable and closable cover on the movable plate, coal dust can be blocked from entering when the connector is exposed, thereby ensuring the stability and continuity of the communication signal.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0017] Figure 1 It is a structural schematic diagram of a mine intrinsically safe repeater according to an embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the enlarged structure of a local A according to an embodiment of the utility model;

[0019] Figure 3 It is a structural schematic diagram of a mining intrinsically safe repeater according to an embodiment of the utility model when a limit device is not installed;

[0020] Figure 4 It is a schematic diagram of the enlarged structure of a part B of the threaded head connection state according to an embodiment of the utility model;

[0021] Figure 5 It is a schematic diagram of a partial C enlarged structure of a threaded head connection state according to an embodiment of the utility model;

[0022] Figure 6 It is a structural schematic diagram of a limiting device according to an embodiment of the utility model;

[0023] As shown in the figure:

[0024] 100, fixing plate; 101, supporting frame; 102, damping knob; 103, mounting hole; 200, repeater body; 201, groove; 202, connector; 203, blocking block; 300, antenna; 301, threaded head; 400, limiting device; 410, moving plate; 420, elastic structure; 421, column; 422, limiting head; 423, spring; 430, limiting sleeve; 440, cover plate. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] The intrinsically safe repeater for mining of the present utility model is described below in conjunction with the accompanying drawings.

[0027] like Figures 1 to 3 As shown, the intrinsically safe repeater for mining according to the embodiment of the utility model may include a fixing plate 100 , a repeater body 200 , an antenna 300 and a limiting device 400 .

[0028] The repeater body 200 is disposed on a fixing plate 100 , and the fixing plate 100 is installed at a mounting position (eg, a mine tunnel, etc.) by means of bolt fixing.

[0029] like Figure 4 and Figure 5 As shown, a groove 201 is provided downwardly at the top of the repeater body 200 , a connector 202 is provided in the groove 201 , and a blocking block 203 is provided at the top corner of the groove 201 .

[0030] It should be noted that the outer wall of the connector 202 is provided with external threads.

[0031] A threaded head 301 is provided at the bottom of the antenna 300 , and the threaded head 301 is threadedly connected to the connector 202 .

[0032] It should be noted that an internal thread is provided on the inner wall of the thread head 301 . When the thread head 301 is connected to the connector 202 , the internal thread is threadedly connected to the external thread.

[0033] The limiting device 400 is arranged in the groove 201, such as Figure 6 As shown, the limiting device 400 includes a moving plate 410 , an elastic structure 420 , a limiting sleeve 430 and a cover plate 440 .

[0034] Among them, the movable plate 410 is arranged in the groove 201 and is connected to the bottom of the groove 201 through the elastic structure 420 so that the movable plate 410 abuts against the blocking block 203. The limiting sleeve 430 is embedded in the movable plate 410 and is sleeved on the outside of the threaded head 301. The cover plate 440 can be opened and closed and is set on the limiting sleeve 430.

[0035] As a possible situation, there are four elastic structures 420, which are respectively arranged at the four corners of the movable plate 410 to improve the stability of the movable plate 410 during movement; there are four blocking blocks 203, which are respectively arranged at the four corners at the top of the groove 201 to improve the stability when the movable plate 410 abuts against the blocking blocks 203.

[0036] Specifically, when the relevant staff installs the intrinsically safe repeater for mining of the embodiment of the utility model, first, the relevant staff installs the fixing plate 100 at the installation location such as the mine tunnel.

[0037] Then, the relevant staff lifts up the cover plate 440 and presses the movable plate 410 downward. The movable plate 410 is subjected to force and pushes the elastic structure 420 to deform, causing the movable plate 410 to move downward. At this time, the connecting head 202 is exposed from the limiting sleeve 430, and the relevant staff connects the threaded head 301 to the connecting head 202 by threads.

[0038] Next, after the threaded head 301 and the connecting head 202 are connected, the elastic structure 420 is reset to push the movable plate 410 to move upward, and the movable plate 410 abuts against the blocking block 203. At this time, the limit head 422 is located outside the threaded head 301. When the mechanical vibration in the mine is more frequent, the limit head 422 blocks and limits the threaded head 301, effectively avoiding the loosening of the threaded head 301.

[0039] When the relevant staff is disassembling and repairing the antenna 300, they also press the movable plate 410 to move the movable plate 410 downward, unscrew the threaded head 301, and then reset the movable plate 410. Then, the relevant staff covers the cover plate 440 on the limit head 422, which can effectively prevent the coal ash in the mine from entering the connecting head 202.

[0040] In an embodiment of the present invention, the elastic structure 420 includes a column 421 , a limiting head 422 and a spring 423 .

[0041] Among them, a through hole is opened downward at the bottom of the groove 201, one end of the column 421 is connected to the movable plate 410, and the other end slides through the through hole and extends forward, the limit head 422 is arranged at the extended end of the column 421, the spring 423 is sleeved on the column 421, and the two ends of the spring 423 are respectively connected to the bottom of the groove 201 and the limit head 422.

[0042] It should be noted that when the movable plate 410 is pressed, the movable plate 410 pushes down the column 421, and the spring 423 on the column 421 is in a stretched state, and when the movable plate 410 is no longer pressed downward by force, the restoring action of the spring 423 drives the column 421 and the movable plate 410 to move upward until the movable plate 410 abuts against the blocking block 203.

[0043] In one embodiment of the present invention, pivotable support frames 101 are respectively provided at the four corners of the fixing plate 100 and are respectively locked by damping knobs 102 , and a mounting hole 103 is provided on one side of the support frame 101 away from the pivot end.

[0044] It should be noted that relevant staff can adjust the installation points of the four support frames 101 according to the actual installation environment to improve the adaptability when the installation environment is not good.

[0045] For example, if there are potholes in the mine tunnel at the installation location, the relevant staff can rotate the support frame 101 to a flat position, lock the damping knob 102, and then pass the bolt through the installation hole 103 to fix it at the installation location.

[0046] In an embodiment of the present invention, the sides of the movable plate 410 are respectively in contact with the inner walls of the groove 201 .

[0047] It should be noted that the movable plate 410 matches the inner wall of the groove 201, which not only realizes the limitation of the movable plate 410, so that when the thread head 301 rotates, the rotation can be effectively prevented by the limit head 422 on the movable plate 410, but also prevents impurities such as coal ash from entering the bottom of the groove 201.

[0048] In addition, the inner shape of the limiting sleeve 430 matches the shape of the thread head 301 .

[0049] As a possible situation, the thread head 301 is a hexagonal thread head, and the corresponding inner cavity cross-section of the limiting sleeve 430 is hexagonal, that is, when the thread head 301 rotates, the limiting sleeve 430 fixed on the movable plate 410 can block the thread head 301 to prevent it from rotating.

[0050] In one embodiment of the present utility model, a hinge frame 441 is arranged beside the limiting sleeve 430 , and the hinge frame 441 is arranged on the movable plate 410 , and the cover plate 440 is hingedly connected to the hinge frame 441 .

[0051] It should be noted that the size of the cover plate 440 is larger than the top size of the limit head 422 to ensure that when the cover plate 440 is covered on the limit head 422 , it can effectively prevent the coal ash from entering the connecting head 202 through the limit head 422 .

[0052] In summary, according to the intrinsically safe repeater for mining of the embodiment of the utility model, the threaded head 301 of the antenna 300 is limited by the limiting sleeve 430, which can effectively prevent the antenna 300 and the connector 202 from loosening when there is large vibration in the mine. In addition, by providing an openable and closable cover 440 on the movable plate 410, coal ash can be blocked from entering when the connector 202 is exposed, thereby ensuring the stability and continuity of the communication signal.

[0053] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying 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 the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0055] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A mine intrinsically safe repeater, characterized in that: include: A fixing plate (100), a repeater body (200), an antenna (300) and a limiting device (400), wherein: The repeater body (200) is arranged on the fixing plate (100); A groove (201) is provided downwardly on the top of the repeater body (200), a connector (202) is provided in the groove (201), and a blocking block (203) is provided at the top corner of the groove (201); A threaded head (301) is provided at the bottom of the antenna (300), and the threaded head (301) is threadably connected to the connector (202); The limiting device (400) is arranged in the groove (201), and comprises a moving plate (410), an elastic structure (420), a limiting sleeve (430) and a cover plate (440), wherein: The movable plate (410) is arranged in the groove (201) and is connected to the bottom of the groove (201) via the elastic structure (420), so that the movable plate (410) abuts against the blocking block (203); The limiting sleeve (430) is embedded in the movable plate (410) and sleeved outside the threaded head (301); The cover plate (440) is openably and closably arranged on the limiting sleeve (430).

2. According to the mine intrinsically safe repeater described in claim 1, it is characterized in that: The elastic structure (420) comprises a column (421), a limit head (422) and a spring (423), wherein: A through hole is formed downwardly at the bottom of the groove (201); One end of the column (421) is connected to the movable plate (410), and the other end slides through the through hole and extends toward; The limiting head (422) is arranged at the extended end of the column (421); The spring (423) is sleeved on the column (421), and two ends of the spring (423) are respectively connected to the bottom of the groove (201) and the limiting head (422).

3. According to the mine intrinsically safe repeater described in claim 1, it is characterized in that: Pivotable support frames (101) are respectively arranged at the four corners of the fixing plate (100) and are respectively locked by damping knobs (102), and a mounting hole (103) is provided on one side of the support frame (101) away from the pivot end.

4. According to the mine intrinsically safe repeater described in claim 1, it is characterized in that: The side edges of the movable plate (410) are respectively fitted with the inner walls of the groove (201).

5. According to the mine intrinsically safe repeater described in claim 1, it is characterized in that: A hinged frame (441) is arranged beside the limiting sleeve (430), and the hinged frame (441) is arranged on the movable plate (410), and the cover plate (440) is hingedly connected to the hinged frame (441).

6. A mine intrinsically safe repeater according to claim 1, characterized in that: The inner cavity shape of the limiting sleeve (430) matches the shape of the threaded head (301).

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