Telescopic protective device for mining hydraulic support

Abstract

The utility model belongs to the technical field of protective devices, and particularly relates to a telescopic protective device for a mining hydraulic support, which comprises a first protective net group, a second protective net group and a third protective net group, and the first protective net group, the second protective net group and the third protective net group respectively comprise a front protective net frame and a rear protective net frame. Sliding blocks are arranged on the rear sides of the rear protective net frames of the first protective net set and the second protective net set, sliding rail connecting plates are arranged on the front sides of the front protective net frames of the second protective net set and the third protective net set, the sliding rail connecting plates and the sliding rails are integrally formed, the sliding blocks are slidably connected with the sliding rails, and an upper fixing connecting mechanism is arranged at the top of the first protective net set. The device can be adaptively stretched according to the stretching height of the hydraulic support, can be obliquely adjusted along with the position of the top of the hydraulic support, can be suitable for different installation conditions within a certain range, and meets the protection requirement of a fully mechanized coal mining face on a channel on one side of a coal mining machine.

Description

Technical Field

[0001] The utility model belongs to the technical field of protective devices, and in particular relates to a telescopic protective device for a hydraulic support for mining. Background Art

[0002] The mining hydraulic support is an indispensable and important equipment in the comprehensive mining face, which is mainly used to control the mine pressure of the coal mining face. The mining face mine pressure acts on the hydraulic support in the form of external load. When the combined force of the supporting parts of the hydraulic support and the combined force of the external load acting on the hydraulic support by the roof are in the same straight line, the hydraulic support can effectively adapt to the surrounding rock of the mining face and ensure the safety and stability of the working face. The space on the inner side of the support, located on one side of the coal mining machine, is used for the movement of personnel and equipment. However, during the coal mining process, coal blocks will splash from time to time, which may cause harm to personnel and equipment. This problem is generally solved by installing a protective net on the hydraulic support, but this method has poor applicability and needs to be cut according to the height of the hydraulic support. Once it is transferred to another place, it may not be able to continue to be used, and it cannot be adjusted adaptively with the adjustment of the height of the hydraulic support. Utility Model Content

[0003] In view of the above problems, the purpose of the utility model is to provide a retractable protective device for a mining hydraulic support. The first protective net group, the second protective net group, and the third protective net group of the device can be adaptively retracted and retracted according to the extension height of the hydraulic support, and can be tilted and adjusted with the top position of the hydraulic support. The two adjacent groups of the device can also be rotated to a certain extent. Therefore, it can be suitable for different installation conditions within a certain range and meet the protection needs of the comprehensive mining face for the side channel of the coal mining machine.

[0004] To achieve the above purpose, the utility model provides the following technical solutions: a retractable protective device for a mining hydraulic support, comprising a first protective net group, a second protective net group, and a third protective net group, wherein the first protective net group, the second protective net group, and the third protective net group all comprise a front protective net frame and a rear protective net frame, the rear sides of the rear protective net frames of the first protective net group and the second protective net group are provided with sliders, the front sides of the front protective net frames of the second protective net group and the third protective net group are provided with slide rail connecting plates, the slide rail connecting plates are integrally formed with the slide rails, the sliders are slidably connected with the slide rails, an upper fixed connecting mechanism is provided at the top of the first protective net group, and a lower fixed connecting mechanism is provided at the bottom of the third protective net group Structure, the upper fixed connection mechanism and the lower fixed connection mechanism both include a clamping arm, a first beam is provided at one end of the clamping arm away from the front protective net frame and the rear protective net frame, a pin connection seat is provided on one side of the first beam away from the clamping arm, the pin connection seat is pin-connected with the second beam, a first universal ball joint is provided on the other side of the second beam, the other end of the first universal ball joint is connected to the first screw plate, a first support arm and a second support arm are provided on the rear side of the first beam of the upper fixed connection mechanism and the front side of the first beam of the lower fixed connection mechanism, a second universal ball joint is provided on one side of the first support arm, a second screw plate is provided on the other end of the second universal ball joint, and one end of the second support arm is connected to the third screw plate.

[0005] The beneficial effects of the utility model are as follows: the first protective net group, the second protective net group and the third protective net group of the device can be adaptively extended and retracted according to the extension height of the hydraulic support, and can be tilted and adjusted along with the top position of the hydraulic support, and two adjacent groups of the device can also be rotated to a certain extent, so it can be suitable for different installation conditions within a certain range, and meet the protection needs of the comprehensive mining face for the channel on one side of the coal mining machine.

[0006] The first protective net group, the second protective net group and the third protective net group are all composed of a front protective net frame and a rear protective net frame. Protective nets and reinforcing ribs are installed on the inner sides of the front protective net frame and the rear protective net frame. The double-layer protective net and the reinforcing ribs can further enhance the blocking ability against splashing coal blocks, improve impact resistance, and ensure production safety.

[0007] In order for the two devices to be able to rotate through the second universal ball joint after being connected:

[0008] As a further improvement of the above technical solution: the second universal ball joint, the second screw connection plate and the third screw connection plate of the upper fixed connection mechanism are aligned up and down with the second universal ball joint, the second screw connection plate and the third screw connection plate of the lower fixed connection mechanism.

[0009] The beneficial effect of this improvement is that the second universal ball joint, the second screw plate and the third screw plate of the upper fixed connection mechanism are aligned up and down with the second universal ball joint, the second screw plate and the third screw plate of the lower fixed connection mechanism, so that two adjacent groups of the device can rotate through the second universal ball joint after being connected.

[0010] For fixing the first screw plate, the second screw plate, and the third screw plate:

[0011] As a further improvement of the above technical solution: the first screw-on plate, the second screw-on plate and the third screw-on plate are all penetrated by bolt holes.

[0012] The beneficial effect of this improvement is that the first screw-on plate is fixed to the hydraulic support through the combination of bolt holes and bolts, and the second screw-on plate and the third screw-on plate are connected and fixed through the combination of bolt holes and bolts.

[0013] For the protection of this device:

[0014] As a further improvement of the above technical solution: protective nets and reinforcing ribs are installed on the inner sides of the front protective net frame and the rear protective net frame.

[0015] The beneficial effect of this improvement is that the protective net is used to block the splashing coal blocks, and the reinforcing ribs are arranged on the side of the protective net away from the coal mining machine to play a supporting role for the protective net.

[0016] To fix the front and rear protective net frames to the slide rails and the slider to the front protective net frame:

[0017] As a further improvement of the above technical solution: the front protective net frame, the rear protective net frame and the slide rail are connected by a first bolt, and the slide block is connected to the front protective net frame by a screw.

[0018] The beneficial effects of this improvement are as follows: the front protective net frame, the rear protective net frame and the slide rail are fixed by means of a first bolt, and the slide block and the front protective net frame are fixed by means of screws.

[0019] To fix the clamp arm to the upper and lower fixed connection mechanisms:

[0020] As a further improvement of the above technical solution: the clamping arm is connected to the upper fixed connection mechanism and the lower fixed connection mechanism by a second bolt.

[0021] The beneficial effect of this improvement is that the clamping arm is fixed to the upper fixed connection mechanism and the lower fixed connection mechanism by means of the second bolt.

[0022] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the right front axonometric structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the assembly effect of the utility model;

[0025] Figure 3 It is a partial cutaway diagram of the left rear of the utility model;

[0026] Figure 4 It is a schematic diagram of the left rear axonometric structure of the utility model;

[0027] Figure 5 This is a front axonometric structural diagram of the second protective net group in the utility model;

[0028] Figure 6 This is a schematic diagram of the back axonometric structure of the second protective net group in the utility model;

[0029] Figure 7 This is a schematic diagram of the installation structure of the slide rail and the slider in the utility model;

[0030] Figure 8 It is a partial enlarged structural schematic diagram of the utility model;

[0031] In the figure: 1. first protective net group; 2. second protective net group; 3. third protective net group; 4. front protective net frame; 5. rear protective net frame; 6. slide rail connecting plate; 7. slide rail; 8. slide block; 9. first bolt; 10. upper fixed connection mechanism; 11. lower fixed connection mechanism; 12. clamping arm; 13. second bolt; 14. first cross beam; 15. pin joint; 16. second cross beam; 17. first universal ball joint; 18. first screw plate; 19. first support arm; 20. second universal ball joint; 21. second screw plate; 22. second support arm; 23. third screw plate; 24. reinforcing rib. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0033] like Figure 1-8As shown, a retractable protective device of a mining hydraulic support includes a first protective net group 1, a second protective net group 2, and a third protective net group 3. The first protective net group 1, the second protective net group 2, and the third protective net group 3 all include a front protective net frame 4 and a rear protective net frame 5. The rear sides of the rear protective net frames 5 of the first protective net group 1 and the second protective net group 2 are provided with sliders 8. The front sides of the front protective net frames 4 of the second protective net group 2 and the third protective net group 3 are provided with slide rail connecting plates 6. The slide rail connecting plates 6 and the slide rails 7 are integrally formed. The sliders 8 are slidably connected to the slide rails 7. An upper fixed connection mechanism 10 is provided on the top of the first protective net group 1. A lower fixed connection mechanism 11 is provided on the bottom of the third protective net group 3. The upper fixed connection mechanism 10 and the lower fixed connection mechanism 11 are both It includes a clamping arm 12, and a first cross beam 14 is provided at one end of the clamping arm 12 away from the front protective net frame 4 and the rear protective net frame 5. A pin connection seat 15 is provided on one side of the first cross beam 14 away from the clamping arm 12, and the pin connection seat 15 is pin-connected with a second cross beam 16. A first universal ball joint 17 is provided on the other side of the second cross beam 16, and the other end of the first universal ball joint 17 is connected to a first screw plate 18. A first support arm 19 and a second support arm 22 are provided on the rear side of the first cross beam 14 of the upper fixed connection mechanism 10 and the front side of the first cross beam 14 of the lower fixed connection mechanism 11. A second universal ball joint 20 is provided on one side of the first support arm 19, and a second screw plate 21 is provided on the other end of the second universal ball joint 20. One end of the second support arm 22 is connected to a third screw plate 23.

[0034] The first protection net group 1, the second protection net group 2, and the third protection net group 3 of the device can be adaptively extended and retracted according to the extension height of the hydraulic support, and can be tilted and adjusted along with the top position of the hydraulic support. The two adjacent groups of the device can also be rotated to a certain extent. Therefore, it can be applied to different installation conditions within a certain range, and meet the protection requirements of the fully mechanized mining face for the channel on one side of the coal mining machine.

[0035] The first protection net group 1, the second protection net group 2, and the third protection net group 3 are all composed of a front protection net frame 4 and a rear protection net frame 5. The inner sides of the front protection net frame 4 and the rear protection net frame 5 are installed with protection nets and reinforcing ribs 24. The double-layer protection nets and reinforcing ribs can further enhance the blocking ability against splashing coal blocks, improve impact resistance, and ensure production safety.

[0036] The second universal ball joint 20 , the second screw plate 21 , and the third screw plate 23 of the upper fixed connection mechanism 10 are aligned vertically with the second universal ball joint 20 , the second screw plate 21 , and the third screw plate 23 of the lower fixed connection mechanism 11 .

[0037] The second universal ball joint 20, the second screw plate 21 and the third screw plate 23 of the upper fixed connection mechanism 10 are aligned vertically with the second universal ball joint 20, the second screw plate 21 and the third screw plate 23 of the lower fixed connection mechanism 11, so that two adjacent groups of the device can rotate through the second universal ball joint 20 after being connected.

[0038] The first screw plate 18 , the second screw plate 21 , and the third screw plate 23 are all provided with bolt holes.

[0039] The first screw-on plate 18 is fixed to the hydraulic support through the combination of bolt holes and bolts, and the second screw-on plate 21 and the third screw-on plate 23 are connected and fixed through the combination of bolt holes and bolts.

[0040] The inner sides of the front protection net frame 4 and the rear protection net frame 5 are installed with protection nets and provided with reinforcing ribs 24 .

[0041] The protective net is used to block the splashing coal blocks. The reinforcing ribs 24 are arranged on the side of the protective net away from the coal mining machine to play a supporting role for the protective net.

[0042] The front protection net frame 4, the rear protection net frame 5 and the slide rail 7 are connected by a first bolt 9, and the slide block 8 and the front protection net frame 4 are connected by screws.

[0043] The front protection net frame 4, the rear protection net frame 5 and the slide rail 7 are fixed by a first bolt 9, and the slide block 8 and the front protection net frame 4 are fixed by screws.

[0044] The clamp arm 12 is connected to the upper fixing connection mechanism 10 and the lower fixing connection mechanism 11 via a second bolt 13 .

[0045] The clamping arm 12 is fixed to the upper fixing connection mechanism 10 and the lower fixing connection mechanism 11 by a second bolt 13 .

[0046] Working principle and use process of the utility model: When the device is in use, the first screw plate 18 at the top of the upper fixed connection mechanism 10 is fixed to the top end of the hydraulic support, and the first screw plate 18 at the bottom of the lower fixed connection mechanism 11 is connected to the base of the hydraulic support, and the first protection net group 1 and the second protection net group 2, and the second protection net group 2 and the third protection net group 3 are slidably connected through the slide rail 7 and the slide block 8. Therefore, except that the height of the third protection net group 3 is fixed due to the height of the lower fixed connection mechanism 11, the height of the second protection net group 2 and the first protection net group 1 can be adjusted according to the hydraulic pressure. The height of the bracket is adaptively adjusted. Since the first crossbeam 14 and the second crossbeam 16 are pinned by the pin-joining seat 15, the device can be tilted to a certain extent according to the extension of the hydraulic bracket and the slight height difference between the two adjacent groups of hydraulic brackets. The two adjacent groups of the device are connected and fixed by bolts to the third screw plate 23 and the second screw plate 21, and the first universal ball joint 17 is connected between the first screw plate 18 and the second crossbeam 16, and the second universal ball joint 20 is connected between the second screw plate 21 and the first support arm 19. Therefore, even if there is a slight difference between the two adjacent groups of hydraulic brackets, Even if the front and rear positions are not in the same straight line, the connection between the two adjacent groups of the device is not affected. When the installation heights between the two adjacent groups of hydraulic supports are different, the device between the two groups of hydraulic supports may not be connected to other adjacent devices, and the upper fixed connection mechanism 10 and the lower fixed connection mechanism 11 may be selected according to actual conditions to connect the single group of first screw plates 18 and the hydraulic support. The first protection net group 1, the second protection net group 2, and the third protection net group 3 can be adaptively extended and retracted according to the extension height of the hydraulic support, and can be connected with the hydraulic support. The top position of the hydraulic support can be tilted and adjusted, and the two adjacent groups of the device can also be rotated to a certain extent. Therefore, it can be suitable for different installation conditions within a certain range to meet the protection needs of the comprehensive mining face for the channel on one side of the coal mining machine. The first protective net group 1, the second protective net group 2, and the third protective net group 3 are all composed of a front protective net frame 4 and a rear protective net frame 5. The inner sides of the front protective net frame 4 and the rear protective net frame 5 are installed with protective nets and reinforcing ribs 24. The double-layer protective net and the reinforcing ribs can further enhance the blocking ability of splashing coal blocks, improve impact resistance, and ensure production safety.

[0047] The circuits, electronic components and modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by this application does not involve improvements to software and methods.

[0048] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes 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 apparatus.

[0049] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only the preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principle of the utility model, they can make several improvements, embellishments or changes, and can also combine the above technical features in an appropriate manner; these improvements, embellishments, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A retractable protective device for a mining hydraulic support, characterized in that: The invention comprises a first protective net group (1), a second protective net group (2) and a third protective net group (3), wherein the first protective net group (1), the second protective net group (2) and the third protective net group (3) all comprise a front protective net frame (4) and a rear protective net frame (5), the rear sides of the rear protective net frames (5) of the first protective net group (1) and the second protective net group (2) are provided with a slider (8), the front sides of the front protective net frames (4) of the second protective net group (2) and the third protective net group (3) are provided with a slide rail connecting plate (6), the slide rail connecting plate (6) and the slide rail (7) are integrally formed, the slider (8) is slidably connected to the slide rail (7), an upper fixed connection mechanism (10) is provided at the top of the first protective net group (1), a lower fixed connection mechanism (11) is provided at the bottom of the third protective net group (3), the upper fixed connection mechanism (10) and the lower fixed connection mechanism (11) both comprise clamping arms (12), and the The clamp arm (12) is provided with a first cross beam (14) at one end away from the front protective net frame (4) and the rear protective net frame (5); a pin connection seat (15) is provided on one side of the first cross beam (14) away from the clamp arm (12); the pin connection seat (15) is pin-connected with a second cross beam (16); a first universal ball joint (17) is provided on the other side of the second cross beam (16); the other end of the first universal ball joint (17) is connected to a first screw plate (18); a first support arm (19) and a second support arm (22) are provided on the rear side of the first cross beam (14) of the upper fixed connection mechanism (10) and the front side of the first cross beam (14) of the lower fixed connection mechanism (11); a second universal ball joint (20) is provided on one side of the first support arm (19); a second screw plate (21) is provided on the other end of the second universal ball joint (20); and one end of the second support arm (22) is connected to a third screw plate (23).

2. The retractable protective device for a mining hydraulic support according to claim 1 is characterized in that: The second universal ball joint (20), the second screw plate (21) and the third screw plate (23) of the upper fixed connection mechanism (10) are aligned vertically with the second universal ball joint (20), the second screw plate (21) and the third screw plate (23) of the lower fixed connection mechanism (11).

3. The retractable protective device for a mining hydraulic support according to claim 1 is characterized in that: The first screw-on plate (18), the second screw-on plate (21) and the third screw-on plate (23) are all provided with bolt holes.

4. The retractable protective device for a mining hydraulic support according to claim 1 is characterized in that: The inner sides of the front protective net frame (4) and the rear protective net frame (5) are installed with protective nets and provided with reinforcing ribs (24).

5. The retractable protective device for a mining hydraulic support according to claim 1 is characterized in that: The front protective net frame (4), the rear protective net frame (5) and the slide rail (7) are connected via a first bolt (9), and the slide block (8) and the front protective net frame (4) are connected via screws.

6. The retractable protective device for a mining hydraulic support according to claim 1 is characterized in that: The clamp arm (12) is connected to the upper fixed connection mechanism (10) and the lower fixed connection mechanism (11) via a second bolt (13).

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