Portable temporary supporting device for coal mining

Abstract

The utility model discloses a convenient temporary support device for coal mining, which comprises a support body, thread bushings are coaxially arranged at the upper end and the lower end of the support body, screw rods are in threaded fit with the thread bushings, the thread turning directions of the upper screw rod and the lower screw rod are opposite, and when the support body rotates towards one side, the support body rotates towards the other side. The upper screw rod and the lower screw rod move in opposite directions; a supporting plate is arranged at the outer end of the screw rod; the height of the device can be contracted, the device can be conveniently carried and moved in a narrow coal seam channel, and after the device reaches an excavation position, the height of the device can be lengthened, so that the upper supporting plate and the lower supporting plate are supported on the top face and the bottom face of the coal seam channel respectively, the supporting effect on ore above the coal seam channel is achieved, small collapse can be coped, and the device is convenient to use. And an effect of protecting mining workers is achieved.

Description

Technical Field

[0001] The utility model relates to a convenient temporary supporting device for coal mining. Background Art

[0002] For the mining of ultra-low coal seams (ultra-low coal seams are coal seams with a height of less than 1.3 meters), traditional large-scale coal mining equipment is not applicable and can only be carried out manually. Manual mining is carried out step by step along the coal seam channels. During the mining process, there is a risk of ore collapse, so temporary support needs to be built at the mining location.

[0003] In the prior art, such temporary supports are made of wooden or metal poles, which have a fixed height and therefore cannot effectively adapt to coal seam passages of different heights. In order to meet the support needs, simple pads are usually used to increase the height.

[0004] The above-mentioned support method has limited support effect and cannot provide effective protection for mining personnel.

[0005] Based on the above problems, we designed a convenient temporary support device for coal mining that can adjust the support height and has a small volume structure, making it easy to carry and move in narrow passages. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a convenient temporary support device for coal mining which can adjust the support height and has a small volume structure and is easy to carry and move in narrow passages.

[0007] In order to solve the above problems, the present invention adopts the following technical solutions:

[0008] A convenient temporary support device for coal mining includes a bracket body, wherein threaded sleeves are coaxially arranged at the upper and lower ends of the bracket body, and a screw is threadedly engaged with the threaded sleeve. The threads of the upper and lower screws have opposite rotation directions. When the bracket body is rotated to one side, the upper and lower screws are displaced in opposite directions; a support plate is provided at the outer end of the screw.

[0009] Preferably, the interior of the bracket body is hollow, and a device box is provided on the inner side of the bracket body. A mobile power supply, a buzzer and an emergency flashlight are detachably installed in the device box, and the buzzer and the emergency flashlight are both powered by the mobile power supply; an opening is provided at the front end of the device box, and a box cover is rotatably engaged at the opening, and a locking screw is engaged between the box cover and the device box.

[0010] Preferably, the support plate and the screw are integrally formed by a lathe.

[0011] Preferably, the support plate is provided with more than two slide grooves in an annular manner at the end face away from the screw rod, the slide groove radially penetrates the support plate, a limiting groove is provided at the groove bottom of the slide groove, both ends of the limiting groove are closed, and guide grooves are provided at the groove walls on both sides of the slide groove, an extension bracket is slidably fitted in the slide groove, and guide bars matching the guide grooves are provided on both sides of the extension bracket, a stepped hole is drilled at the top of the extension bracket, and an internal thread is processed at the small diameter position of the stepped hole, a limiting screw is assembled through the internal thread, and the lower end of the limiting screw is inserted into the limiting groove.

[0012] Preferably, the upper end surface of the extension bracket is flush with the upper end surface of the support plate.

[0013] Preferably, a plurality of anti-slip teeth are milled on the top of the extension bracket.

[0014] Preferably, the capacity of the mobile power supply is greater than 10,000 mAh.

[0015] The beneficial effects of the utility model are:

[0016] The height of this device can be retracted, which is convenient for carrying and moving in narrow coal seam channels. After reaching the excavation position, the height of this device can be extended so that the upper and lower support plates are respectively supported on the top and bottom surfaces of the coal seam channel, thereby supporting the ore above the coal seam channel, coping with small collapses, and protecting the mining workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of opening the device box;

[0020] Figure 3 This is a schematic diagram of the interior of the device box;

[0021] Figure 4 It is a partial schematic diagram of the device;

[0022] Figure 5 A top view of the support plate. DETAILED DESCRIPTION

[0023] All features disclosed in this specification, or all steps in the disclosed methods or processes, except mutually exclusive features and / or steps, can be combined in any manner.

[0024] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or similar features. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0025] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end", "length", "outer end", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0026] In addition, in the description of the present invention, “a plurality of” means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In this utility model, unless otherwise specified or limited, the terms "disposed," "socketed," "connected," "through," and "inserted" should be understood in a broad sense. For example, they can refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] See Figure 1 The shown device is a portable temporary support device for coal mining, comprising a bracket body 1, with threaded sleeves 2 coaxially arranged at the upper and lower ends of the bracket body 1, and a screw 3 threadedly engaged with the threaded sleeve 2. The threads of the upper and lower screws 3 are rotated in opposite directions. When the bracket body 1 is rotated to one side, the upper and lower screws 3 are displaced in opposite directions; a support plate 4 is provided at the outer end of the screw 3.

[0029] The support plate 4 and the screw rod 3 are integrally formed by lathe.

[0030] In the above technical solution, the overall height of the support device is reduced by the inward rotation of the two sections of the screw 3, so as to facilitate movement in narrow coal seam passages.

[0031] After reaching the mining position, the support device is erected, the bottom support plate 4 contacts the ground, and then the bracket body 1 is rotated so that the lower screw 3 is gradually screwed out until the upper support plate 4 contacts the top surface of the channel. At this time, the bracket body 1 is continued to be rotated so that the two screws 3 are rotated outward and the support plate 4 is firmly pressed against the upper and lower end surfaces of the coal seam channel.

[0032] After the excavation of the support area is completed, the support device is retracted to the next required excavation position.

[0033] This device is suitable for ultra-low coal seam mining.

[0034] The device is made of high-strength aluminum alloy, is light in weight, easy to carry, and has strong supporting capacity.

[0035] See Figure 2 and Figure 3 As shown, the interior of the bracket body 1 is hollow, and a device box 5 is disposed inside the bracket body 1. A mobile power bank 6, a buzzer 7, and an emergency flashlight 8 are detachably mounted within the device box 5. Both the buzzer 7 and the emergency flashlight 8 are powered by the mobile power bank 6. The front end of the device box 5 has an opening 51, which is rotatably engaged with a cover 52. A locking screw 53 engages the cover 52 and the device box 5. The capacity of the mobile power bank 6 is 20,000 mAh.

[0036] The above technical solution is mainly used in emergency situations when there are small collapses around the excavation point, which causes the retreat road to be blocked.

[0037] When collapse occurs in the surrounding area, the device box 6 can be opened and the buzzer 7 can be plugged into the mobile power supply 6. At this time, the buzzer 7 will emit sounds intermittently after being energized, which is convenient for rescuers to locate the position of the trapped people.

[0038] The emergency flashlight 8 can provide emergency lighting to facilitate the trapped people to escape on their own.

[0039] The mobile power supply 6, buzzer 7 and emergency flashlight 8 can all be removed from the device box 5 to assist in escaping when escaping from a predicament.

[0040] See Figure 4 and Figure 5As shown, the support plate 4 is provided with more than two slide grooves 41 in an annular manner at the end face away from the screw rod 3, and the slide groove 41 radially penetrates the support plate 4, and a limiting groove 42 is provided at the groove bottom of the slide groove 41, and the two ends of the limiting groove 42 are closed. Guide grooves 43 are provided on the groove walls on both sides of the slide groove 41, and an extension bracket 44 is slidably fitted in the slide groove 41. Guide bars 45 that match the guide grooves 43 are provided on both sides of the extension bracket 44, and a stepped hole 46 is drilled at the top of the extension bracket 44, and an internal thread is processed at the small diameter position of the stepped hole 46, and a limiting screw 47 is assembled through the internal thread, and the lower end of the limiting screw 47 is inserted into the limiting groove 42.

[0041] In the above technical solution, the support area of ​​the support plate 4 can be increased by extending the sliding of the bracket 44 .

[0042] The upper end surface of the extension bracket 44 is flush with the upper end surface of the support plate 4 .

[0043] See Figure 5 As shown, a plurality of anti-slip teeth 441 are milled and formed on the top of the extension bracket 44 .

[0044] The provision of the anti-slip teeth 441 can provide sufficient friction between the extension bracket 44 and the top and bottom of the coal seam passage.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0046] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0047] For ease of description, spatially relative terms such as "above", "above", "on the upper surface", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0048] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0049] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A portable temporary support device for coal mining, characterized by: The invention comprises a bracket body (1), wherein threaded sleeves (2) are coaxially arranged at the upper and lower ends of the bracket body (1), and a screw rod (3) is threadedly engaged with the threaded sleeve (2), wherein the threads of the upper and lower screw rods (3) rotate in opposite directions, and when the bracket body (1) rotates to one side, the upper and lower screw rods (3) move in opposite directions; and a support plate (4) is arranged at the outer end of the screw rod (3).

2. The portable temporary support device for coal mining according to claim 1, characterized in that: The interior of the bracket body (1) is hollow, and a device box (5) is provided on the inner side of the bracket body (1). A mobile power supply (6), a buzzer (7) and an emergency flashlight (8) are detachably installed in the device box (5), and the buzzer (7) and the emergency flashlight (8) are both powered by the mobile power supply (6); an opening (51) is provided at the front end of the device box (5), and a box cover (52) is rotatably engaged at the opening (51), and a locking screw (53) is engaged between the box cover (52) and the device box (5).

3. The portable temporary support device for coal mining according to claim 1, characterized in that: The support plate (4) and the screw rod (3) are integrally formed by lathe processing.

4. The portable temporary support device for coal mining according to claim 1, characterized in that: The support plate (4) is provided with more than two slide grooves (41) in an annular manner at the end surface away from the screw rod (3), and the slide groove (41) radially penetrates the support plate (4), and a limiting groove (42) is provided at the groove bottom of the slide groove (41), and both ends of the limiting groove (42) are closed. Guide grooves (43) are provided at the groove walls on both sides of the slide groove (41), and an extension bracket (44) is slidably matched in the slide groove (41), and guide strips (45) matching the guide grooves (43) are provided on both sides of the extension bracket (44). A stepped hole (46) is drilled at the top of the extension bracket (44), and an internal thread is processed at the small diameter position of the stepped hole (46). A limiting screw (47) is assembled through the internal thread, and the lower end of the limiting screw (47) is inserted into the limiting groove (42).

5. The portable temporary support device for coal mining according to claim 4, characterized in that: The upper end surface of the extension bracket (44) is flush with the upper end surface of the support plate (4).

6. The portable temporary support device for coal mining according to claim 5, characterized in that: The top of the extension bracket (44) is milled to form a plurality of anti-slip teeth (441).

7. The portable temporary support device for coal mining according to claim 2, characterized in that: The capacity of the mobile power supply (6) is greater than 10,000 milliamperes.

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