External telescopic beam jack top coal caving support

Abstract

The utility model belongs to the technical field of top coal caving supports, and particularly relates to an external telescopic beam jack top coal caving support which comprises a top coal caving support body, the outer end of the top coal caving support body is connected with a protection mechanism, and the protection mechanism comprises a protection unit and a lighting unit. The protection unit is arranged at the upper end of the top coal caving support body, and the lighting unit is arranged at the upper end of the interior of the top coal caving support body. According to the external telescopic beam jack top coal caving support, when the top coal caving support body is used, baffles are placed at the front end and the rear end of the upper portion of the top coal caving support body, meanwhile, after threaded rods penetrate through round holes, fixing rings are connected to the outer sides of the threaded rods in a threaded mode till the fixing rings make contact with the sides, away from the top coal caving support body, of the baffles, and the top coal caving support body is fixed. The baffles are fixed to the front end and the rear end of the upper portion of the top coal caving support body, and coal briquettes and rocks falling to the upper end of the top coal caving support body from the top of a mine are blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of top coal caving supports, in particular to a top coal caving support with an external telescopic beam jack. Background Art

[0002] The top coal caving support is the main equipment for underground operations. When the top coal caving support is in operation, the telescopic beam on it needs to be repeatedly extended and retracted. The telescopic beam of the existing top coal caving support is generally a box-type telescopic type. In actual working conditions, due to the inclination of the working surface or the asynchronous force of the two telescopic jacks, the telescopic beam often deviates and gets stuck in the front beam body.

[0003] The telescopic beam movement of the top coal caving support is realized by the telescopic beam jack arranged in the front beam cavity. With this arrangement, the telescopic beam jack is basically inside the front beam box. In order to ensure the strength of the front beam, only a small gap can be opened at the front beam cover to expose the joint seat and the hinge pin. When the telescopic beam jack fails, it is very difficult to repair and replace it.

[0004] For example, the external telescopic beam jack top coal caving support disclosed in Chinese patent CN202866837U has a slide rail arranged in the cavity of the front beam of the cavity, a slider is movably arranged on the slide rail, the telescopic beam is fixedly arranged on the slider, a cantilever beam is hinged at the front end of the telescopic beam, the cantilever beam is V-shaped, the tail of the V-shaped cantilever beam is hinged to the front end of the telescopic beam, the middle part of the V-shaped cantilever beam is hinged to one end of a short rod, the other end of the short rod is hinged to a long rod, and the other end of the long rod is hinged to the front end of the telescopic beam, so that the telescopic beam jack 23 is completely exposed, and maintenance and replacement are very convenient.

[0005] However, the upper end of the external telescopic beam jack top coal support is not provided with a protective device, and it is unable to prevent the coal blocks and rocks falling from the top of the mine to the upper end of the top coal support body from sliding down.

[0006] For this reason, we urgently need to provide an external telescopic beam jack top coal caving support with a protective function. Utility Model Content

[0007] The purpose of the utility model is to provide an external telescopic beam jack top coal caving support to solve the problem that the upper end of the external telescopic beam jack top coal caving support proposed in the above background technology is not provided with a protective device, and the coal blocks and rocks falling from the top of the mine to the upper end of the top coal caving support body cannot be blocked from sliding.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an external telescopic beam jack top coal caving support, comprising a top coal caving support body, the outer end of the top coal caving support body is connected to a protective mechanism, the protective mechanism comprises a protective unit and a lighting unit, the protective unit is arranged at the upper end of the top coal caving support body, and the lighting unit is arranged at the inner upper end of the top coal caving support body.

[0009] The protection unit includes a threaded rod, a fixing ring, a paddle and a baffle. The threaded rod is fixedly connected to the left and right ends of the front and rear sides above the main body of the top coal caving support, the fixing ring is connected to the outer end of the threaded rod, the paddle is fixedly connected to the left and right ends of the outer side of the fixing ring, and the baffle is connected to the outer end of the threaded rod.

[0010] A further improvement is that the inner side of the fixing ring is provided with an internal thread, and the inner side of the fixing ring is threadedly connected to the outer side of the threaded rod, so that when the paddle is turned to make the fixing ring located outside the threaded rod rotate, the fixing ring will move relative to the threaded rod.

[0011] A further improvement is that a circular hole is provided at the lower end of the baffle, the outer side of the threaded rod is slidably connected to the inner side of the circular hole, the side of the baffle away from the main body of the top coal caving support abuts against the side of the fixing ring close to the main body of the top coal caving support, and the side of the baffle away from the fixing ring abuts against the front and rear sides of the upper side of the main body of the top coal caving support. Thus, after the baffle is placed at the front and rear ends above the main body of the top coal caving support, and the circular hole passes through the threaded rod, the fixing ring is threadedly connected to the outer side of the threaded rod until the fixing ring contacts the side of the baffle away from the main body of the top coal caving support, the baffle can be fixed to the front and rear ends above the main body of the top coal caving support, and the coal and rocks falling from the top of the mine to the upper end of the main body of the top coal caving support are blocked, so as to prevent the coal and rocks falling on the main body of the top coal caving support from falling from the upper end of the main body of the top coal caving support and injuring the staff.

[0012] A further improvement is that the lighting unit includes a lamp holder, a lighting bulb, a connecting block, a spring, an insertion rod and a transparent glass cover, the lamp holder is fixedly connected to the lower side of the upper end of the main body of the top coal caving support, the lighting bulb is installed at the lower end of the lamp holder, the connecting block is fixedly connected to the front and rear ends of the outer side of the lamp holder, the spring is connected to the inner side of the connecting block, the insertion rod is fixedly connected to one end of the spring, and the transparent glass cover is connected to the lower side of the upper end of the main body of the top coal caving support at the outer end of the lamp holder.

[0013] A further improvement is that a circular groove is provided in the middle of the connection block away from one end of the lamp holder, the end of the spring away from the insertion rod is fixedly connected to the innermost end of the circular groove, and the outer side of the insertion rod is slidably connected to the inner side of the circular groove. Therefore, when the spring is activated, the insertion rod can be driven to slide along the inner side of the circular groove, thereby limiting the movement of the insertion rod.

[0014] A further improvement is that a plug hole is provided in the middle of the front and rear ends of the upper part of the transparent glass cover, the outer side of the end of the plug rod away from the spring is plugged into the inner side of the plug hole, and the upper end of the transparent glass cover is in contact with the lower side of the upper end of the main body of the top coal caving support. Thus, after the transparent glass cover is placed on the lamp holder at the lower side of the upper end of the main body of the top coal caving support, the plug rod is pushed out of the circular groove by the spring rebound, so that the end of the plug rod away from the spring moves to the plug holes at the front and rear ends of the upper part of the transparent glass cover, so that the transparent glass cover is fixed to the outer end of the lighting bulb, which plays a protective role for the lighting bulb.

[0015] A further improvement is that a rubber pad is fixedly connected to the upper side of the transparent glass cover. Therefore, after the transparent glass cover is fixed to the lower side of the upper end portion of the main body of the top coal caving support, the rubber pad on the upper side of the transparent glass cover contacts the outer side of the main body of the top coal caving support, so that the contact point between the transparent glass cover and the main body of the top coal caving support can be kept sealed, preventing water vapor in the air from entering the transparent glass cover and damaging the lighting bulb.

[0016] In summary, the present application discloses an external telescopic beam jack top coal caving support.

[0017] According to the technical solution, the baffle is placed at the front and rear ends above the main body of the top coal caving support, and after the round hole passes through the threaded rod, the fixing ring is threadedly connected to the outside of the threaded rod until the fixing ring contacts the side of the baffle away from the main body of the top coal caving support. The baffle can be fixed to the front and rear ends above the main body of the top coal caving support to block the coal blocks and rocks falling from the top of the mine to the upper end of the main body of the top coal caving support, and prevent the coal blocks and rocks falling onto the main body of the top coal caving support from falling from the upper end of the main body of the top coal caving support and injuring the staff.

[0018] Furthermore, after the transparent glass cover is placed on the lamp holder on the lower side of the upper end of the main body of the top coal caving support, the insertion rod is pushed out of the circular groove by the spring rebound, so that the end of the insertion rod away from the spring moves to the insertion holes at the front and rear ends above the transparent glass cover, thereby fixing the transparent glass cover to the outer end of the lighting bulb, thereby protecting the lighting bulb. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the protection unit of the utility model;

[0021] Figure 3 This is a bottom view of the main structure of the utility model;

[0022] Figure 4 This is a structural schematic diagram of the lighting unit of the utility model;

[0023] Figure 5 It is a schematic diagram of the internal structure of the connection block of the utility model.

[0024] In the figure: 1. main body of top coal support; 201. threaded rod; 202. fixing ring; 203. pick; 204. baffle; 301. lamp holder; 302. lighting bulb; 303. connecting block; 304. spring; 305. plug rod; 306. transparent glass cover. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0027] Embodiment 1:

[0028] A top coal caving support with an external telescopic beam jack comprises a top coal caving support body 1. The outer end of the top coal caving support body 1 is connected with a protective mechanism, which comprises a protective unit and a lighting unit. The protective unit is arranged at the upper end of the top coal caving support body 1, and the lighting unit is arranged at the inner upper end of the top coal caving support body 1.

[0029] The protection unit includes a threaded rod 201, a fixing ring 202, a paddle 203 and a baffle 204. The threaded rod 201 is fixedly connected to the left and right ends of the front and rear sides of the top of the top coal support body 1, the fixing ring 202 is connected to the outer end of the threaded rod 201, and the paddle 203 is fixedly connected to the left and right ends of the outer side of the fixing ring 202. The inner side of the fixing ring 202 is provided with an internal thread, and the inner side of the fixing ring 202 is threadedly connected to the outer side of the threaded rod 201. Therefore, when the paddle 203 is moved to make the fixing ring 202 rotate on the outer side of the threaded rod 201, the fixing ring 202 will move relative to the threaded rod 201.

[0030] The baffle plate 204 is connected to the outer end of the threaded rod 201. A circular hole is opened at the lower end of the baffle plate 204, and the outer side of the threaded rod 201 is slidably connected to the inner side of the circular hole. The side of the baffle plate 204 away from the main body 1 of the top coal caving support abuts against the side of the fixing ring 202 close to the main body 1 of the top coal caving support, and the side of the baffle plate 204 away from the fixing ring 202 abuts against the upper front and rear sides of the main body 1 of the top coal caving support. Thus, after the baffle 204 is placed at the front and rear ends above the main body 1 of the top coal caving support, and the round hole passes through the threaded rod 201, the fixing ring 202 is threadedly connected to the outer side of the threaded rod 201 until the fixing ring 202 contacts the side of the baffle 204 away from the main body 1 of the top coal caving support, the baffle 204 can be fixed to the front and rear ends above the main body 1 of the top coal caving support, so as to block the coal blocks and rocks falling from the top of the mine to the upper end of the main body 1 of the top coal caving support, and prevent the coal blocks and rocks falling onto the main body 1 of the top coal caving support from falling from the upper end of the main body 1 of the top coal caving support and injuring the staff.

[0031] Embodiment 2:

[0032] On the basis of the first embodiment: the lighting unit comprises a lamp holder 301, a lighting bulb 302, a connecting block 303, a spring 304, a plug rod 305 and a transparent glass cover 306, the lamp holder 301 is fixedly connected to the lower side of the upper end of the main body 1 of the top coal caving support, the lighting bulb 302 is installed at the lower end of the lamp holder 301, the connecting block 303 is fixedly connected to the front and rear ends of the outer side of the lamp holder 301, the spring 304 is connected to the inner side of the connecting block 303, the plug rod 305 is fixedly connected to one end of the spring 304, a circular groove is provided in the middle position of the connecting block 303 away from one end of the lamp holder 301, the end of the spring 304 away from the plug rod 305 is fixedly connected to the innermost end of the inner side of the circular groove, and the outer side of the plug rod 305 is slidably connected to the inner side of the circular groove. Therefore, when the spring 304 bounces, it can drive the plug rod 305 to slide along the inner side of the circular groove, thereby limiting the movement of the plug rod 305.

[0033] The transparent glass cover 306 is connected to the lower side of the upper end of the main body 1 of the top coal caving support, which is located at the outer end of the lamp holder 301. A plug hole is provided in the middle of the front and rear ends of the upper part of the transparent glass cover 306, and the outer side of the end of the plug rod 305 away from the spring 304 is plugged into the inner side of the plug hole, and the upper end of the transparent glass cover 306 abuts against the lower side of the upper end of the main body 1 of the top coal caving support. Therefore, after the transparent glass cover 306 is placed on the lamp holder 301 at the lower side of the upper end of the main body 1 of the top coal caving support, the spring 304 rebounds to push the plug rod 305 out of the circular groove, so that the end of the plug rod 305 away from the spring 304 moves to the plug holes at the front and rear ends above the transparent glass cover 306, so that the transparent glass cover 306 is fixed to the outer end of the lighting bulb 302, which plays a protective role for the lighting bulb 302.

[0034] Embodiment three:

[0035] On the basis of the first embodiment: a rubber pad is fixedly connected to the upper side of the transparent glass cover 306. After the transparent glass cover 306 is fixed to the lower side of the upper end portion of the main body 1 of the top coal caving support, the rubber pad on the upper side of the transparent glass cover 306 contacts the outer side of the main body 1 of the top coal caving support, so that the contact point between the transparent glass cover 306 and the main body 1 of the top coal caving support can be kept sealed, preventing water vapor in the air from entering the transparent glass cover 306 and damaging the lighting bulb 302.

[0036] Working principle: When in use, when the main body 1 of the top coal caving support is in use, the baffle 204 is placed at the front and rear ends above the main body 1 of the top coal caving support, and at the same time, the round hole passes through the threaded rod 201, and then the fixing ring 202 is threadedly connected to the outside of the threaded rod 201 until the fixing ring 202 contacts the side of the baffle 204 away from the main body 1 of the top coal caving support, so that the baffle 204 is fixed to the front and rear ends above the main body 1 of the top coal caving support, so as to block the coal blocks and rocks falling from the top of the mine to the upper end of the main body 1 of the top coal caving support.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. 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 statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. An external telescopic beam jack top coal caving support, comprising a top coal caving support body (1), characterized in that: The outer end of the top coal caving support body (1) is connected to a protection mechanism, the protection mechanism comprising a protection unit and a lighting unit, the protection unit is arranged at the upper end of the top coal caving support body (1), and the lighting unit is arranged at the inner upper end of the top coal caving support body (1); The protection unit comprises a threaded rod (201), a fixing ring (202), a paddle (203) and a baffle (204); the threaded rod (201) is fixedly connected to the left and right ends of the front and rear sides above the main body (1) of the top coal caving support; the fixing ring (202) is connected to the outer end of the threaded rod (201); the paddle (203) is fixedly connected to the left and right ends of the outer side of the fixing ring (202); and the baffle (204) is connected to the outer end of the threaded rod (201).

2. The external telescopic beam jack top coal caving support according to claim 1, characterized in that: An internal thread is formed on the inner side of the fixing ring (202), and the inner side of the fixing ring (202) is threadably connected to the outer side of the threaded rod (201).

3. The external telescopic beam jack top coal caving support according to claim 1, characterized in that: A circular hole is formed at the lower end of the baffle plate (204), and the outer side of the threaded rod (201) is slidably connected to the inner side of the circular hole. The side of the baffle plate (204) away from the main body (1) of the top coal caving support abuts against the side of the fixing ring (202) close to the main body (1) of the top coal caving support, and the side of the baffle plate (204) away from the fixing ring (202) abuts against the front and rear sides of the upper side of the main body (1) of the top coal caving support.

4. The external telescopic beam jack top coal caving support according to claim 1, characterized in that: The lighting unit comprises a lamp holder (301), a lighting bulb (302), a connecting block (303), a spring (304), an insertion rod (305) and a transparent glass cover (306); the lamp holder (301) is fixedly connected to the lower side of the upper end of the main body (1) of the top coal caving support; the lighting bulb (302) is installed at the lower end of the lamp holder (301); the connecting block (303) is fixedly connected to the front and rear ends of the outer side of the lamp holder (301); the spring (304) is connected to the inner side of the connecting block (303); the insertion rod (305) is fixedly connected to one end of the spring (304); and the transparent glass cover (306) is connected to the lower side of the upper end of the main body (1) of the top coal caving support at a position located at the outer end of the lamp holder (301).

5. The external telescopic beam jack top coal caving support according to claim 4, characterized in that: A circular groove is provided in the middle of the connection block (303) at one end away from the lamp holder (301); one end of the spring (304) away from the insertion rod (305) is fixedly connected to the innermost end of the circular groove; and the outer side of the insertion rod (305) is slidably connected to the inner side of the circular groove.

6. The external telescopic beam jack top coal caving support according to claim 4, characterized in that: A plug hole is provided in the middle of the front and rear ends of the upper interior of the transparent glass cover (306), the outer side of one end of the plug rod (305) away from the spring (304) is plugged into the inner side of the plug hole, and the upper end of the transparent glass cover (306) is in contact with the lower side of the upper end of the top coal support body (1).

7. The external telescopic beam jack top coal caving support according to claim 4, characterized in that: A rubber pad is fixedly connected to the upper side of the transparent glass cover (306).

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