Protective device

Abstract

The utility model relates to the technical field of coal mines, and discloses a protective device which comprises a supporting base, a main stand column, a front connecting rod, a rear connecting rod, a shield beam, a balance jack, a top beam mechanism and a front beam mechanism, the main stand column is fixedly installed at the upper end of the supporting base, and the front connecting rod is fixedly installed at the upper end of the supporting base. The rear connecting rod is fixedly installed at the upper end of the supporting base and located on the right side of the front connecting rod, the shield beam is installed at the upper ends of the front connecting rod and the rear connecting rod, the balance jack is installed below the shield beam, the top beam mechanism is located on the left portion of the upper end of the shield beam, and the front beam mechanism is located on the left portion of the front beam mechanism. According to the protection device, by installing the hidden grooves, the supporting blocks and the supporting springs, when the supporting top beam supports the top of the mine, all the supporting blocks arranged in a grid shape can be stably embedded into uneven gaps in the top of the mine, so that pressure brought by protruding parts of the top of the mine is dispersed, and the protection effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, specifically a protective device. Background Technology

[0002] Coal mines are places specifically for mining coal. Since most coal mines are buried underground, mining can only be carried out in shafts. In the past, when technology was underdeveloped, shafts were extremely dangerous, supported only by wooden supports. However, with the development of technology, the hydraulic supports for fully mechanized coal mining that have been developed can greatly improve the safety of coal mining operations and assist in mining, resulting in better mining results.

[0003] The current hydraulic support structure for fully mechanized coal mining is mature and can stably complete mining work. However, the mine environment is complex, and the structure of the mine is not the same at different times. Therefore, the current hydraulic support cannot fully meet the mining work requirements.

[0004] Currently, fully mechanized hydraulic supports in coal mines generally support the top of the mine shaft through top beams. However, the top of the mine shaft is not flat, so the stress on different parts of the top beam is uneven. If there is a local protrusion on the top of the mine shaft, it may cause a certain part of the top beam to be subjected to huge pressure. At the same time, when using front beams to support the mine wall, the vibration generated during mining may cause ore to fall off the mine wall, resulting in ore waste. Utility Model Content

[0005] The purpose of this invention is to provide a protective device to solve the problem of incomplete protection of current coal mine fully mechanized mining supports mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a protective device, comprising a support base, a main column, a front connecting rod, a rear connecting rod, a protective beam, a balancing jack, a top beam mechanism, and a front beam mechanism. The main column is fixedly installed on the upper end of the support base, the front connecting rod is fixedly installed on the upper end of the support base, the rear connecting rod is fixedly installed on the upper end of the support base, the rear connecting rod is located to the right of the front connecting rod, the protective beam is installed on the upper end of the front and rear connecting rods, the balancing jack is installed below the protective beam, the top beam mechanism is located on the left side of the upper end of the protective beam, and the front beam mechanism is located on the left side of the front beam mechanism.

[0007] Preferably, the supporting top beam, hidden groove, supporting block, limiting block, and supporting spring are arranged as follows: the supporting top beam is connected to the upper left end of the shield beam; the hidden groove is fixedly installed at the upper end of the supporting top beam and arranged in a grid pattern at the upper end of the supporting top beam; the supporting block is movably installed at the upper end of the hidden groove and its lower end extends into the interior of the hidden groove; the limiting block is fixedly installed at the lower end of the supporting block; and the supporting spring is fixedly installed at the bottom inside the hidden groove and its upper end is fixedly connected to the lower end of the limiting block. By installing the hidden groove, supporting block, and supporting spring, when the supporting top beam supports the top of the mine, all the grid-shaped supporting blocks will be stably embedded in the uneven gaps of the mine top to disperse the pressure brought by the protruding part of the mine top, greatly improving the protective effect of the protective device.

[0008] Preferably, the damper is fixedly installed at the bottom inside the hidden groove, and the upper end of the damper is fixedly connected to the lower end of the limiting block. The damper is located inside the support spring. By installing the damper, when there is a large recess at the top of the mine, the support block still cannot touch the top of the mine at its highest point. If ore falls from this point, it will fall directly onto the support block at that point. At this time, the damper and the support spring can effectively reduce the vibration caused by the impact and improve the protection of the device.

[0009] Preferably, the supporting front beam, contraction groove, rotating shaft, rotating support plate, supporting surface, and ejection spring are configured as follows: the supporting front beam is installed at the left end of the supporting top beam; the contraction groove is fixedly installed at the upper end of the supporting front beam; the rotating shaft is fixedly installed at the right side inside the contraction groove; the rotating support plate is rotatably connected to the outer end of the rotating shaft and is adapted to the contraction groove; the supporting surface is fixedly installed at the left end of the rotating support plate; and the ejection spring is fixedly installed at the bottom inside the contraction groove, with its upper end fixedly connected to the lower end of the rotating support plate. This configuration allows the supporting front beam to catch ore falling from the recessed areas of the mine wall. When the mining machinery reaches these areas, the supporting front beam automatically retracts, and the ore on the supporting surface automatically falls onto the conveyor belt, reducing ore waste.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. This protective device, by installing hidden grooves, support blocks and support springs, ensures that when the supporting top beam supports the top of the mine, all the grid-like support blocks will be stably embedded in the uneven gaps of the mine top, so as to disperse the pressure brought by the protruding part of the mine top, and greatly improve the protective effect of the protective device.

[0012] 2. When the top of the mine has a large depression, the support block still cannot touch the top of the mine at its highest point. If ore falls from this point, it will fall directly onto the support block. At this time, the damper and support spring can effectively reduce the vibration caused by the impact and improve the protection of the device.

[0013] 3. This protective device can catch ore falling from the depressions on the mine wall. When the mining machinery reaches the depressions, the front support beam will automatically retract, and the ore on the support surface will automatically fall onto the conveyor belt, reducing ore waste. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic cross-sectional view of the top beam mechanism of this utility model;

[0016] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0017] Figure 4 This is a schematic cross-sectional view of the front beam mechanism of this utility model.

[0018] In the diagram: 1. Support base; 2. Main column; 3. Front connecting rod; 4. Rear connecting rod; 5. Protective beam; 6. Balancing jack; 7. Top beam mechanism; 8. Front beam mechanism; 701. Supporting top beam; 702. Concealed groove; 703. Support block; 704. Limiting block; 705. Supporting spring; 706. Damper; 707. Piston ring; 708. Extension ring; 801. Supporting front beam; 802. Contraction groove; 803. Rotating shaft; 804. Rotating support plate; 805. Support surface; 806. Ejection spring; 807. Dust-blocking brush. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-4This utility model provides a technical solution: a protective device, including a support base 1, a main column 2, a front connecting rod 3, a rear connecting rod 4, a protective beam 5, a balancing jack 6, a top beam mechanism 7, and a front beam mechanism 8. The main column 2 is fixedly installed on the upper end of the support base 1, the front connecting rod 3 is fixedly installed on the upper end of the support base 1, the rear connecting rod 4 is fixedly installed on the upper end of the support base 1, and the rear connecting rod 4 is located to the right of the front connecting rod 3. The protective beam 5 is installed on the upper ends of the front connecting rod 3 and the rear connecting rod 4. The balancing jack 6 is installed below the protective beam 5. The top beam mechanism 7 is located on the left side of the upper end of the protective beam 5, and the front beam mechanism 8 is located on the left side of the front beam mechanism 8. Supporting components include a top beam 701, a hidden groove 702, a support block 703, a limiting block 704, and a support spring 705. The supporting top beam 701 is connected to the upper left end of the protective beam 5. The hidden groove 702... 02 is fixedly installed on the upper end of the supporting top beam 701. The hidden groove 702 is arranged in a grid pattern on the upper end of the supporting top beam 701. The support block 703 is movably installed on the upper end of the hidden groove 702. The lower end of the support block 703 extends into the interior of the hidden groove 702. The limiting block 704 is fixedly installed on the lower end of the support block 703. The support spring 705 is fixedly installed at the bottom inside the hidden groove 702. The upper end of the support spring 705 is fixedly connected to the lower end of the limiting block 704. By installing the hidden groove 702, the support block 703 and the support spring 705, when the supporting top beam 701 supports the top of the mine, all the grid-shaped support blocks 703 will be stably embedded in the uneven gaps of the mine top to disperse the pressure brought by the protruding part of the mine top, which greatly improves the protective effect of the protective device.

[0021] The damper 706 is fixedly installed at the bottom inside the concealed groove 702. The upper end of the damper 706 is fixedly connected to the lower end of the limiting block 704. The damper 706 is located inside the support spring 705. By installing the damper 706, when there is a large depression at the top of the mine, the support block 703 will still not be able to touch the top of the mine at its highest point. If ore falls from this point, it will fall directly onto the support block 703. At this time, the damper 706 and the support spring 705 can effectively reduce the vibration caused by the impact and improve the protection of the device. The supporting front beam 801, the contraction groove 802, the rotating shaft 803, the rotating support plate 804, the support surface 805, and the ejection spring 806 are also included. The supporting front beam 801 is installed at the left end of the supporting top beam 701. The contraction groove 802 is fixedly set at the upper end of the supporting front beam 801. The rotating shaft 803 is fixed. Installed inside the shrinkage trough 802 on the right side, the rotating support plate 804 is rotatably connected to the outer end of the rotating shaft 803. The rotating support plate 804 is adapted to the shrinkage trough 802. The support surface 805 is fixedly set at the left end of the rotating support plate 804. The ejection spring 806 is fixedly installed at the bottom inside the shrinkage trough 802. The upper end of the ejection spring 806 is fixedly connected to the lower end of the rotating support plate 804. When the support beam 801 is used to support the mine wall, the rotating support plate 804 and the support surface 805 will be pushed out of the shrinkage trough 802 through the ejection spring 806 and the rotating shaft 803. At the same time, the support surface 805 will be arranged horizontally on one side of the mine wall. When the ore falls from the depression on the mine wall, it can catch the ore. When the mining machinery reaches the place, the support beam 801 will automatically retract. At this time, the ore on the support surface 805 will also automatically fall onto the conveyor belt, reducing the waste of ore.

[0022] The structure includes a dust-blocking brush 807, which is fixedly installed on the left side of the inner end of the shrinkage trough 802. By installing the dust-blocking brush 807, slag can be effectively prevented from entering the shrinkage trough 802 along the gap between the shrinkage trough 802 and the rotating support plate 804 during ore collection, thus improving the stability of the structure. The structure also includes a piston ring 707 and an extension ring 708. The piston ring 707 is fixedly installed on the upper part of the inner end of the concealed trough 702, and the extension ring 708 is fixedly installed on the outer end of the piston ring 707, extending to the inner end of the supporting top beam 701. By installing the piston ring 707, ore powder can be effectively blocked, preventing it from entering the concealed trough 702 along the gap.

[0023] Working principle: By installing the hidden groove 702, support blocks 703, and support springs 705, when the support beam 701 supports the mine roof, all the grid-like arrangement of support blocks 703 will stably embed into the uneven gaps in the mine roof to disperse the pressure from the protruding parts of the mine roof, greatly improving the protective effect of the device. By installing the damper 706, when the mine roof has a large concave part, the support blocks 703 still cannot touch the mine roof at their highest point. If ore falls from this point, it will fall directly onto the support block 703 at that point. In this case, the damper... The support spring 706 and the support spring 705 can effectively reduce the vibration caused by the impact and improve the protection of the device. When the support front beam 801 is used to support the mine wall, the rotating support plate 804 and the support surface 805 will be pushed out from the shrink groove 802 through the push-out spring 806 and the rotating shaft 803. At the same time, the support surface 805 will be arranged horizontally on one side of the mine wall. When the ore falls from the depression on the mine wall, it can catch the ore. When the mining machinery reaches the place, the support front beam 801 will automatically retract. At this time, the ore on the support surface 805 will also automatically fall onto the conveyor belt, reducing the waste of ore.

[0024] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A protective device comprising a support base (1), a main column (2), a front connecting rod (3), a rear connecting rod (4), a protective beam (5), a balancing jack (6), a top beam mechanism (7), and a front beam mechanism (8), characterized in that: The main column (2) is fixedly installed on the upper end of the support base (1), the front connecting rod (3) is fixedly installed on the upper end of the support base (1), the rear connecting rod (4) is fixedly installed on the upper end of the support base (1), the rear connecting rod (4) is located to the right of the front connecting rod (3), the shield beam (5) is installed on the upper ends of the front connecting rod (3) and the rear connecting rod (4), the balancing jack (6) is installed below the shield beam (5), the top beam mechanism (7) is located on the left side of the upper end of the shield beam (5), and the front beam mechanism (8) is located on the left side of the front beam mechanism (8).

2. The protective device according to claim 1, characterized in that: The top beam mechanism (7) includes a supporting top beam (701), a hidden groove (702), a supporting block (703), a limiting block (704), and a supporting spring (705). The supporting top beam (701) is connected to the upper left end of the shield beam (5). The hidden groove (702) is fixedly installed at the upper end of the supporting top beam (701). The hidden groove (702) is arranged in a grid pattern at the upper end of the supporting top beam (701). The supporting block (703) is movably installed at the upper end of the hidden groove (702). The lower end of the supporting block (703) extends into the interior of the hidden groove (702). The limiting block (704) is fixedly installed at the lower end of the supporting block (703). The supporting spring (705) is fixedly installed at the bottom inside the hidden groove (702). The upper end of the supporting spring (705) is fixedly connected to the lower end of the limiting block (704).

3. The protective device according to claim 2, characterized in that: The top beam mechanism (7) also includes a damper (706), which is fixedly installed at the bottom inside the hidden groove (702). The upper end of the damper (706) is fixedly connected to the lower end of the limiting block (704), and the damper (706) is located inside the support spring (705).

4. A protective device according to claim 3, characterized in that: The front beam mechanism (8) includes a supporting front beam (801), a contraction groove (802), a rotating shaft (803), a rotating support plate (804), a supporting surface (805), and an ejector spring (806). The supporting front beam (801) is installed at the left end of the supporting top beam (701). The contraction groove (802) is fixedly installed at the upper end of the supporting front beam (801). The rotating shaft (803) is fixedly installed at the right side inside the contraction groove (802). The rotating support plate (804) is rotatably connected to the outer end of the rotating shaft (803). The rotating support plate (804) is adapted to the contraction groove (802). The supporting surface (805) is fixedly installed at the left end of the rotating support plate (804). The ejector spring (806) is fixedly installed at the bottom inside the contraction groove (802). The upper end of the ejector spring (806) is fixedly connected to the lower end of the rotating support plate (804).

5. A protective device according to claim 4, characterized in that: The front beam mechanism (8) also includes a dust-blocking brush (807), which is fixedly installed on the left side of the inner end of the shrinkage groove (802).

6. A protective device according to claim 5, characterized in that: The top beam mechanism (7) also includes a piston ring (707) and an extension ring (708). The piston ring (707) is fixedly installed on the upper part of the inner end of the hidden groove (702), and the extension ring (708) is fixedly installed on the outer end of the piston ring (707). The extension ring (708) extends to the inner end of the supporting top beam (701).

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