Coal mine tunnel reinforcing device

Abstract

The utility model discloses a coal mine tunnel reinforcing device which comprises a vault, four sets of first stand columns are distributed at the bottom end of the vault in a rectangular shape, the four sets of first stand columns are all in sliding connection with supporting pieces, a set of limiting rods are rotationally connected between the two sets of first stand columns at the same end of the vault, and the limiting rods can be matched with locking assemblies to achieve locking. The limiting rod is connected with two lifting assemblies, the output directions of the two lifting assemblies are opposite, and the stroke lengths of the two lifting assemblies are different. The lifting assemblies with different stroke lengths are arranged, the height of the vault can be flexibly adjusted according to the actual height of a roadway, and the application range is wider; the stability of the vault in the lifting process is effectively improved, it is ensured that the device runs reliably, the lifting assembly is switched and then fixed through the locking assembly, it can be ensured that the vault is stably supported at the set height, looseness or displacement is avoided, the situation that the vault is shut down to replace equipment due to the fact that the deformation exceeds a threshold value is avoided, and manpower and time cost is reduced.

Description

Technical Field

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

[0002] In coal mine roadway support, hydraulic rods are the core components for adjusting the support height. However, the limitation of their fixed lifting height seriously restricts the support effect. The height of underground roadways in coal mines varies significantly due to factors such as geological structure and mining depth, and there are complex terrains with local protrusions or depressions, which places extremely high demands on the height adaptability of support devices.

[0003] Existing support devices mostly use fixed-stroke hydraulic rods. When the actual height of the roadway exceeds its maximum elongation, the device cannot effectively fit against the roof, forming a support gap. This makes it difficult to resist the deformation pressure of the surrounding rock. The adjustment range of the fixed-stroke hydraulic rod is strictly limited by the mechanical structure. When the deformation exceeds the threshold, the machine must be stopped and the equipment replaced, which seriously affects the continuity of mining, increases manpower and time costs, and may even cause safety accidents due to support failure. Therefore, it is necessary to design a coal mine roadway reinforcement device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a coal mine roadway reinforcement device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coal mine roadway reinforcement device, including an arch, with four sets of first columns distributed in a rectangular shape at the bottom end of the arch. All four sets of first columns are slidably connected to a support member. A set of limiting rods is rotatably connected between two sets of first columns at the same end of the arch, and the limiting rods can be locked in conjunction with a locking component. The limiting rods are connected to two sets of lifting components, and the output directions of the two sets of lifting components are opposite and their stroke lengths are different.

[0006] Preferably, each end of the limiting rod is equipped with a set of limiting seats, and each set of limiting seats can be locked to the first column on the corresponding side by two sets of bolts.

[0007] Preferably, each set of bolts is threadedly connected to the limiting seat and can be inserted into the first column on the corresponding side to form a locking connection.

[0008] Preferably, the two ends of the limiting rod shaft are rotatably connected to the bearings installed on the first column on the corresponding side.

[0009] Preferably, the lifting assembly includes a connecting seat, a hydraulic rod, and a baffle. Two sets of the connecting seats are installed on the outside of the limiting rod. A set of the hydraulic rods is installed on each of the two sets of connecting seats on opposite sides. The output directions of the two sets of hydraulic rods are opposite and their stroke lengths are different. A set of the baffles is connected to the output end of each set of hydraulic rods.

[0010] Preferably, the support includes a second column and a base, each group of first columns and a group of second columns are slidably connected, and each group of second columns is connected to the base.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model has lifting components with different stroke lengths, which can flexibly adjust the height of the arch according to the actual height of the roadway, making it more adaptable. The cooperation between the first column and the support component effectively improves the stability of the arch lifting process, ensuring reliable operation of the device. After switching the lifting components, the locking components can fix the arch, ensuring stable support at the set height and preventing loosening or displacement. There is no need to stop the machine to replace the equipment due to deformation exceeding the threshold, reducing manpower and time costs and helping to ensure the continuity of mining.

[0013] 2. This utility model achieves the switching of lifting components by rotating the limit rod, which is simple and intuitive to operate. It can quickly select the appropriate lifting component with the appropriate stroke according to the roadway height requirements. After switching, the locking component is used to lock it firmly, ensuring the stability of the lifting component during operation and preventing displacement due to vibration and other factors, thus ensuring reliable support effect. The two sets of lifting components with different strokes can flexibly cope with roadways of different heights and surrounding rock deformation, greatly improving the applicability of the device. There is no need to frequently change equipment, and the entire switching and locking process does not require long downtime, which can minimize the impact on mining continuity and reduce labor and time costs.

[0014] 3. This utility model features two sets of hydraulic rods with different stroke lengths, which can be switched to meet different roadway height requirements without stopping the machine to replace equipment. This solves the problem of limited adjustment range of fixed stroke hydraulic rods. The baffle increases the contact area between the hydraulic rod and the arch, making the arch more evenly stressed, reducing local wear, and extending the service life of the device. The first and second columns in the support are slidably connected, and together with the stable support of the base, the stability of the arch lifting process is further improved, avoiding shaking that affects the support effect. The entire adjustment process is convenient to operate. After switching the lifting components, the locking components fix the system, ensuring the reliability of the support state and effectively resisting the deformation pressure of the surrounding rock. Attached Figure Description

[0015] Figure 1 This is an exploded view of the overall structure of this utility model;

[0016] Figure 2 This utility model Figure 1 Enlarged view of point A;

[0017] Figure 3 This is a cross-sectional view of the overall structure of this utility model;

[0018] Figure 4 This utility model Figure 3 Enlarged view of point B;

[0019] Figure 5 This is a schematic diagram of the overall structure of this utility model.

[0020] In the diagram: 1. Arch; 2. First column; 3. Limiting rod; 4. Limiting seat; 5. Bolt; 6. Connecting seat; 7. Hydraulic rod; 8. Baffle; 9. Second column; 10. Base; 11. Bearing. Detailed Implementation

[0021] 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.

[0022] Example 1

[0023] Please refer to Figure 1-5 As shown, this utility model provides a coal mine roadway reinforcement device, including an arch 1. The bottom end of the arch 1 has four sets of first columns 2 arranged in a rectangular shape. All four sets of first columns 2 are slidably connected to the support members. A set of limiting rods 3 are rotatably connected between two sets of first columns 2 at the same end of the arch 1. The limiting rods 3 can be locked with the locking components. The limiting rods 3 are connected to two sets of lifting components. The output directions of the two sets of lifting components are opposite and their stroke lengths are different.

[0024] When the coal mine roadway reinforcement device is working, it drives the arch 1 to rise and fall by operating two sets of lifting components with opposite output directions and different stroke lengths. After switching between lifting components with different strokes, the locking component is used to fix the limit rod 3 to maintain the current lifting state. At the same time, the four sets of first columns 2 form a sliding connection with the support components, which plays a guiding and supporting role in the lifting and falling process of the arch 1, improving the stability of the lifting process. The limit rod 3, which is rotatably connected between the two sets of first columns 2 at the same end of the arch 1, further helps to ensure the stability of the structure.

[0025] Equipped with lifting components of different stroke lengths, the height of the arch 1 can be flexibly adjusted according to the actual height of the roadway, making it more adaptable. The cooperation between the first column 2 and the support components effectively improves the stability of the arch 1 during the lifting process, ensuring reliable operation of the device. After switching the lifting components, the locking components can fix it, ensuring that the arch 1 is stably supported at the set height, avoiding loosening or displacement. There is no need to stop and replace the equipment due to deformation exceeding the threshold, reducing manpower and time costs and helping to ensure the continuity of mining.

[0026] Specifically, each end of the limiting rod 3 is equipped with a set of limiting seats 4. Each set of limiting seats 4 can be locked to the first column 2 on the corresponding side by two sets of bolts 5. Each set of bolts 5 is threaded to the limiting seat 4 and can be inserted into the first column 2 on the corresponding side to form a locking connection. The two ends of the shaft of the limiting rod 3 are rotated in conjunction with the bearings 11 installed on the first column 2 on the corresponding side.

[0027] When it is necessary to switch between lifting components with different strokes, first release the locking component from locking the limit rod 3, rotate the limit rod 3. Since the limit rod 3 is connected to two sets of lifting components with different strokes, the rotation will drive the two sets of lifting components to switch positions. After switching to the lifting component with the required stroke, use the locking component, i.e., the limit seat 4, and the two sets of bolts 5 to lock it. Specifically, pass the bolts 5 through the limit seat 4 and screw them into the first column 2 on the corresponding side to fix the position of the limit rod 3, thereby fixing the position of the lifting component. Then, start the lifting component at the current position. Its output force pushes the arch 1 to rise and fall. The sliding cooperation between the first column 2 and the support ensures the stability of the lifting process.

[0028] The lifting components are switched by rotating the limit rod 3. The operation is simple and intuitive, and the appropriate lifting component with the appropriate stroke can be selected quickly according to the height requirements of the roadway. After switching, the locking component is used to lock it firmly to ensure the stability of the lifting component during operation and to prevent displacement due to vibration and other factors, thus ensuring reliable support effect. The two sets of lifting components with different strokes can flexibly cope with roadways of different heights and surrounding rock deformation, which greatly improves the applicability of the device. There is no need to frequently change equipment, and the entire switching and locking process does not require long downtime, which can minimize the impact on mining continuity and reduce labor and time costs.

[0029] The lifting assembly includes a connecting seat 6, a hydraulic rod 7, and a baffle 8. Two sets of connecting seats 6 are installed on the outside of the limiting rod 3. A set of hydraulic rods 7 is installed on each of the opposite sides of the two sets of connecting seats 6. The output directions of the two sets of hydraulic rods 7 are opposite and their stroke lengths are different. A set of baffles 8 is connected to the output end of each set of hydraulic rods 7. The support includes a second column 9 and a base 10. Each set of first columns 2 and a set of second columns 9 form a sliding connection. Each set of second columns 9 is connected to the base 10.

[0030] When the lifting assembly is working, the hydraulic pump in the prior art provides power to the two sets of hydraulic rods 7. When it is necessary to adjust the height of the arch 1, if it is necessary to switch the lifting assembly, first release the locking assembly, rotate the limit rod 3, and drive the two sets of connecting seats 6 and hydraulic rods 7 connected to it to switch positions. Then, it is fixed by the locking assembly. At this time, the hydraulic pump drives the hydraulic rod 7 at the corresponding position to extend, push the baffle 8 to move, and the baffle 8 pushes the arch 1 to lift and lower it. When the hydraulic rod 7 retracts, it drives the arch 1 to descend. During the lifting process, each set of first columns 2 and corresponding second columns 9 form a sliding connection. The second column 9 is fixed on the base 10, which together provide stable support and guidance for the lifting of the arch 1.

[0031] In the lifting assembly, the hydraulic rod 7 works in conjunction with the hydraulic pump, providing stable and controllable power output. This allows for precise adjustment of the lifting height of the arch 1, ensuring a tight fit with the tunnel roof and preventing support gaps. Two sets of hydraulic rods 7 with different stroke lengths can be switched to meet different tunnel height requirements without stopping the machine to replace equipment, thus solving the problem of limited adjustment range of fixed-stroke hydraulic rods. The baffle 8 increases the contact area between the hydraulic rod 7 and the arch 1, making the arch 1 more evenly stressed, reducing local wear, and extending the service life of the device. The first column 2 and the second column 9 in the support components are slidably connected, and with the stable support of the base 10, the stability of the arch 1 lifting process is further improved, preventing swaying from affecting the support effect. The entire adjustment process is convenient to operate. After switching the lifting assembly, it is fixed by the locking assembly, ensuring the reliability of the support state and effectively resisting the deformation pressure of the surrounding rock.

[0032] Working principle: When it is necessary to switch between lifting components with different strokes, first release the locking component from the limit rod 3, rotate the limit rod 3. Since the limit rod 3 is connected to two sets of lifting components with different strokes, the rotation will drive the two sets of lifting components to switch positions. After switching to the lifting component with the required stroke, the locking component, i.e., the limit seat 4, is locked by the threaded engagement of the two sets of bolts 5. Specifically, the bolts 5 are passed through the limit seat 4 and screwed into the first column 2 on the corresponding side, so that the position of the limit rod 3 is fixed, thereby fixing the position of the lifting component. Then, the lifting component at the current position is started, and its output force pushes the arch 1 to rise and fall, and the first column 2 and the support The sliding fit of the support components ensures stability during the lifting process. When it is necessary to adjust the height of the arch 1, if the lifting assembly needs to be switched, first release the locking assembly, rotate the limit rod 3, and drive the two sets of connecting seats 6 and hydraulic rods 7 connected to it to switch positions. Then, fix them by the locking assembly. At this time, the hydraulic pump drives the hydraulic rod 7 at the corresponding position to extend, push the baffle 8 to move, and the baffle 8 pushes the arch 1 to lift and lower it. When the hydraulic rod 7 retracts, it drives the arch 1 to descend. During the lifting process, each set of first columns 2 and corresponding second columns 9 form a sliding connection. The second column 9 is fixed on the base 10, which together provide stable support and guidance for the lifting of the arch 1.

[0033] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A coal mine roadway reinforcement device, comprising an arch (1), characterized in that: The bottom of the arch (1) is rectangularly distributed with four sets of first columns (2). All four sets of first columns (2) are slidably connected to the support members. A set of limiting rods (3) is rotatably connected between two sets of first columns (2) at the same end of the arch (1). The limiting rods (3) can be locked with the locking components. The limiting rods (3) are connected to two sets of lifting components. The output directions of the two sets of lifting components are opposite and their stroke lengths are different.

2. The coal mine roadway reinforcement device according to claim 1, characterized in that: Each end of the limiting rod (3) is equipped with a set of limiting seats (4), and each set of limiting seats (4) can be locked to the first column (2) on the corresponding side by two sets of bolts (5).

3. The coal mine roadway reinforcement device according to claim 2, characterized in that: Each set of bolts (5) is threadedly connected to the limiting seat (4) and can be inserted into the first column (2) on the corresponding side to form a locking connection.

4. The coal mine roadway reinforcement device according to claim 2, characterized in that: The two ends of the limiting rod (3) shaft are connected to the bearings (11) installed on the first column (2) on the corresponding side to form a rotating connection.

5. A coal mine roadway reinforcement device according to claim 1, characterized in that: The lifting assembly includes a connecting seat (6), a hydraulic rod (7), and a baffle (8). Two sets of the connecting seats (6) are installed on the outside of the limiting rod (3). A set of the hydraulic rod (7) is installed on each of the opposite sides of the two sets of connecting seats (6). The output directions of the two sets of hydraulic rods (7) are opposite and their stroke lengths are different. A set of the baffle (8) is connected to the output end of each set of hydraulic rods (7).

6. The coal mine roadway reinforcement device according to claim 1, characterized in that: The support includes a second column (9) and a base (10). Each group of first columns (2) is slidably connected to a group of second columns (9), and each group of second columns (9) is connected to the base (10).

Images