Detachable flexible protective net for fully mechanized coal mining support

Abstract

The utility model relates to the technical field of coal mine supporting equipment discloses a detachable flexible guard net for fully mechanized coal mining support, which comprises a guard net body, two rows of connecting lock buckles are arranged on the guard net body, each row of the connecting lock buckles is uniformly and interval arranged along the length direction of the guard net body, the connecting lock buckles are detachably buckled on the lifting ring nut, and the lifting ring nut is arranged on the opposite end faces of two cross beams. The utility model can replace the damaged components, save raw materials and reduce cost.

Description

Technical Field

[0001] This utility model relates to the technical field of coal mine support equipment, and in particular to a flexible protective net for a detachable fully mechanized mining support. Background Technology

[0002] Currently, coal mines tend to have high working resistance and large mining height hydraulic supports. The mine pressure is significantly different from that of ordinary mining faces. The mine pressure in the longwall face is strong, and coal wall spalling and blasting are serious. In order to ensure the safety of equipment and personnel, flexible protective nets are usually installed in front of the supports.

[0003] Traditional flexible protective netting typically uses 30x30x3 galvanized square steel pipes or reinforcing bars for the upper and lower crossbeams. The netting itself is made of Φ4 braided steel wire connected together with locking buckles. The connection between the netting and the crossbeams involves using semi-circular buckles welded to the crossbeams to secure the wires to the upper and lower crossbeams. Neither the netting nor the crossbeams can be replaced. Improper operation or excessive external force can easily damage either the crossbeams or the netting, requiring the entire netting to be replaced if any part is damaged, increasing construction costs. Therefore, there is an urgent need for a replaceable, detachable flexible protective netting for fully mechanized mining supports to reduce construction costs. Utility Model Content

[0004] The purpose of this invention is to provide a detachable flexible protective net for fully mechanized mining supports, which can selectively replace damaged parts, save raw materials, and reduce costs.

[0005] The present invention adopts the following technical solution:

[0006] A flexible protective net for a detachable fully mechanized mining support includes a net body with two rows of connecting buckles on the net body. Each row of connecting buckles is evenly spaced along the length of the net body. The connecting buckles are detachably fastened to lifting eye nuts, which are located on the opposite end faces of two crossbeams.

[0007] Preferably, the connecting latch is an O-ring.

[0008] Preferably, the eye nut is detachably mounted on the crossbeam by bolts.

[0009] Preferably, each of the two beams is provided with a fixing rope at the ends that are far apart from each other.

[0010] Preferably, two winding wheels are symmetrically arranged at the ends of the two crossbeams that are far apart from each other, and the fixing rope is wound around the winding wheels; the crossbeams are provided with positioning elements for positioning the winding wheels.

[0011] Preferably, a support frame is provided on the crossbeam, and the winding wheel is rotatably mounted on the support frame via a rotating shaft; the positioning element includes a first positioning rod, which is adjustablely mounted on the support frame.

[0012] Preferably, the positioning component further includes a threaded sleeve rotatably disposed on the support frame, the first positioning rod being threadedly disposed within the threaded sleeve, a positioning hole being provided on the support frame, a limit groove being provided on the positioning hole, and a limit rod being provided on the first positioning rod that slides within the limit groove; a positioning cavity being provided at one end of the rotating shaft near the first positioning rod, and a second positioning rod being elastically disposed within the positioning cavity; the end of the first positioning rod is frustum-shaped, wherein the diameter of the largest part of the frustum is not greater than the diameter of the positioning cavity.

[0013] Preferably, a ball bearing is movably provided at the bottom of the second positioning rod.

[0014] Preferably, the two winding wheels on each side are connected by a connecting shaft, which is rotatably connected to the support frame.

[0015] Preferably, the end dimension of the second positioning rod is greater than the width of the limiting groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are: through the detachable design of the connecting buckle and the lifting eye nut, this utility model can replace only the damaged part of the protective net body when the protective net body is damaged, without the need for overall disassembly and replacement. This reduces the material replacement cost, the difficulty of overall disassembly, and the labor intensity. Attached Figure Description

[0017] Figure 1 This is a front view of an embodiment of this application;

[0018] Figure 2 This is a front view of the connecting latch in an embodiment of this application;

[0019] Figure 3 This is a cross-sectional view of the sector-shaped support frame according to an embodiment of this application;

[0020] Figure 4 for Figure 3 A magnified view of A in the middle. Detailed Implementation

[0021] The present invention will now be described clearly and completely with reference to the accompanying drawings and embodiments:

[0022] like Figures 1 to 4As shown, the detachable flexible protective net for fully mechanized mining supports of this utility model includes a net body 1, which is mainly woven from Φ4mm stainless steel wire and connected together with locking buckles. The net body 1 has a certain elasticity and will naturally shrink to its minimum size when there is no external force. However, under the action of external force, the net will expand into a rhombus shape. The rhombus-shaped holes can block most of the falling coal and flying gangue without affecting the observation of the front equipment by the personnel at the rear, thus protecting personnel and equipment and reducing the occurrence of safety accidents. The net body 1 is provided with two rows of connecting locking buckles 2. Each row of connecting locking buckles 2 is evenly spaced along the length of the net body 1. The connecting locking buckles 2 are detachably fastened to the lifting eye nuts 3. The lifting eye nuts 3 are set on the opposite end faces of two crossbeams 4. The crossbeams 4 are preferably made of galvanized square steel pipe, which has the characteristics of high strength, not easy to deform, and not easy to rust. Compared with the existing technology where the protective net body 1 is directly fixed to the crossbeam 4, the detachable design of the connecting lock 2 and the lifting nut 3 allows only the damaged protective net body 1 to be replaced when it is damaged, without the need for overall disassembly and replacement. This reduces the material replacement cost, the difficulty of overall disassembly, and the labor intensity.

[0023] In this example, the connecting latch 2 is an O-ring. The removable notch on one side of the O-ring allows for quick connection between the latch 2 and the eye nut 3. After connection, the threaded sleeve 5 on the O-ring is adjusted to seal the notch. The structure is simple and the operation is convenient. Furthermore, in this embodiment, the eye nut 3 is detachably mounted on the crossbeam 4 via bolts for easy disassembly and replacement.

[0024] Furthermore, each of the two crossbeams 4 has a fixing rope 6 at its far end. The fixing rope 6 can be made of steel wire rope and can be used to fix the crossbeams 4 in place. Preferably, each of the two crossbeams 4 has two symmetrical winding wheels 7 at its far ends. The fixing rope 6 is wound around the winding wheels 7. By adjusting the length of the fixing rope 6, it is possible to accommodate asymmetrical connection points and also to assist in adjusting the length of the protective net, maximizing its adaptability to the protective height of the net. The crossbeams 4 are equipped with positioning components for positioning the winding wheels 7. These positioning components ensure the stability of the winding wheels 7 after installation and prevent the fixing rope 6 from being released due to the rotation of the winding wheels 7.

[0025] Furthermore, a support frame 8 is provided on the crossbeam 4, and the winding wheel 7 is rotatably mounted on the support frame 8 via a rotating shaft 10; the positioning element includes a first positioning rod 9, which is adjustablely mounted on the support frame 8, and can only be adjusted along its axial direction on the support frame 8. By adjusting the first positioning rod 9 to abut against the end of the rotating shaft 10, rotation of the rotating shaft 10 can be prevented, thereby achieving the purpose of positioning the winding wheel 7.

[0026] Specifically, the positioning component also includes a threaded sleeve 11 rotatably mounted on the support frame 8 via a bearing. A first positioning rod 9 is threaded into the threaded sleeve 11. The support frame 8 has a positioning hole 12 with a limiting groove 13. The first positioning rod 9 has a limiting rod 14 that slides within the limiting groove 13. The limiting rod 14's sliding position within the limiting groove 13 prevents the positioning rod from rotating synchronously with the threaded sleeve 11 when the first positioning rod 9 moves due to the rotation of the threaded sleeve 11. Simultaneously, the positioning of the first positioning rod 9 ensures the stability of its positioning on the winding wheel 7 after contact with the rotating shaft 10, preventing the rotating shaft 10 from rotating and causing the first positioning rod 9 and threaded sleeve 11 to rotate under external force. A positioning cavity is provided at the end of the rotating shaft 10 closest to the first positioning rod 9. 15. A second positioning rod 17 is elastically provided in the positioning cavity 15 by a spring 16. The axis of the second positioning rod 17 is perpendicular to the axis of the rotating shaft 10. The end dimension of the second positioning rod 17 is larger than the width of the limiting groove 13. This ensures that after the rotating shaft 10 rotates, the second positioning rod 17 can move upward by the same distance as the first positioning rod 9 moves. This prevents the second positioning rod 17 from being unable to contact the inner wall of the positioning hole 12 to complete the positioning when the end dimension of the second positioning rod 17 is smaller than the dimension of the limiting groove 13 due to the rotation of the winding wheel 7 and the rotating shaft 10. Furthermore, the end of the first positioning rod 9 is frustum-shaped, and the diameter gradually increases from the inside to the outside. The diameter of the largest part of the frustum is not greater than the diameter of the positioning cavity 15, so as to ensure that the frustum section can smoothly enter the positioning cavity 15 as the first positioning rod 9 moves. In use, rotating the screw sleeve 11 will drive the first positioning rod 9 to move into the positioning cavity 15. Since the end of the first positioning rod 9 is set in a frustum shape, the movement of the first positioning rod 9 will push up the second positioning rod 17 until the end of the first positioning rod 9 is in close contact with the positioning cavity 15. The second positioning rod 17 then extends out of the accommodating cavity and abuts against the inner wall of the positioning hole 12, which can achieve dual positioning of the rotating shaft 10, further ensuring the stability of the winding wheel 7 and preventing the fixed rope 6 from being stretched out under force.

[0027] Preferably, a ball bearing 18 is movably provided at the bottom of the second positioning rod 17 to reduce wear between it and the first positioning rod 9. Furthermore, in this embodiment, the two winding wheels 7 on each side are connected by a connecting shaft 19, which is rotatably connected to the support frame 8 via bearings. This ensures synchronous adjustment of the two winding wheels 7 on each side, improving operational convenience.

[0028] In use, the detachable design of the connecting buckle 2 and the lifting nut 3 allows for the replacement of only the damaged part of the protective net body 1 when it is damaged, without the need for complete disassembly and replacement. This reduces material replacement costs and the workload associated with complete disassembly. Furthermore, it allows for flexible adjustment of the fixing rope 6 as needed, greatly expanding the scope of application and enhancing the practicality of this invention.

Claims

1. A flexible protective net for a detachable fully mechanized mining support, comprising a protective net body, characterized in that: The protective net body is provided with two rows of connecting buckles. Each row of connecting buckles is evenly spaced along the length of the protective net body. The connecting buckles are detachably fastened to the lifting eye nuts, which are located on the opposite end faces of the two crossbeams.

2. The flexible protective net for the detachable fully mechanized mining support according to claim 1, characterized in that: The connecting latch is an O-type latch.

3. The flexible protective net for the detachable fully mechanized mining support according to claim 1, characterized in that: The eye nut is detachably mounted on the crossbeam by bolts.

4. The flexible protective net for the detachable fully mechanized mining support according to claim 1, characterized in that: Both of the aforementioned crossbeams have fixed ropes installed at their ends that are far apart from each other.

5. The flexible protective net for the detachable fully mechanized mining support according to claim 4, characterized in that: Two winding wheels are symmetrically arranged at the ends of the two crossbeams that are far apart from each other, and the fixing rope is wound around the winding wheels; the crossbeams are provided with positioning components for positioning the winding wheels.

6. The flexible protective net for the detachable fully mechanized mining support according to claim 5, characterized in that: A support frame is provided on the crossbeam, and the winding wheel is rotatably mounted on the support frame via a rotating shaft; the positioning element includes a first positioning rod, which is adjustablely mounted on the support frame.

7. The flexible protective net for the detachable fully mechanized mining support according to claim 6, characterized in that: The positioning component further includes a threaded sleeve rotatably mounted on the support frame, a first positioning rod threaded inside the threaded sleeve, a positioning hole on the support frame, a limit groove on the positioning hole, and a limit rod slidably located within the limit groove on the first positioning rod; a positioning cavity is formed at one end of the rotating shaft near the first positioning rod, and a second positioning rod is elastically mounted within the positioning cavity; the end of the first positioning rod is frustum-shaped, wherein the diameter of the largest part of the frustum is not greater than the diameter of the positioning cavity.

8. The flexible protective net for the detachable fully mechanized mining support according to claim 7, characterized in that: The bottom of the second positioning rod is movably equipped with ball bearings.

9. The flexible protective net for the detachable fully mechanized mining support according to claim 6, characterized in that: The two winding wheels on each side are connected by a connecting shaft, which is rotatably connected to the support frame.

10. The flexible protective net for the detachable fully mechanized mining support according to claim 7, characterized in that: The end dimension of the second positioning rod is larger than the width of the limiting groove.

Images