Coal mine support mine pressure detection device

Abstract

The utility model discloses a coal mine support mine pressure detection device in the technical field of coal mine support, which comprises a support bottom plate and a contact support plate, a transition support plate is arranged above the support bottom plate in parallel, a lower support column is fixedly mounted on the transition support plate, the upper end of the lower support column is fixedly connected with an upper support column, and the lower end of the lower support column is fixedly connected with a lower support plate. The upper end of the upper supporting column is fixedly installed on the bottom face of a supporting top plate, a pressure rod is fixedly arranged on the supporting top plate, and the upper end of the pressure rod is fixedly connected with a contact supporting plate. According to the coal mine supporting mine pressure detection device, the reinforcing fixing net is arranged between the upper portion of the device and the top wall of a coal mine, it is guaranteed that the pressure bearing of the detection position of the device is uniform, the contact supporting plate is of an arc face structure and has good adaptability and fitting degree with the top of a coal mine roadway, and the pressure rod is arranged below the contact supporting plate and can be used for pressure measurement. The pressure sensor is arranged at the lower end of the pressure rod, and the change condition of the bearing pressure can be used as a reference basis for mine pressure detection.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine support, and specifically relates to a coal mine support ground pressure detection device. Background Technique

[0002] Coal is one of the indispensable energy sources in human production and life, and most coal mining is mainly carried out in underground mines. During the coal mining process, in order to ensure the safety of miners, support devices are essential. Support is a device that uses bracing, reinforcement, and protection for the surrounding underground environment. However, coal mining is a long-term operation. After working for a long time, when the surrounding pressure reaches a certain level, the support device may tilt or bend, bringing great potential safety hazards to the mining work. Therefore, it is necessary to detect the bearing pressure of coal mine support in order to timely discover problems, carry out maintenance, and reduce potential safety hazards. Application No.: CN202322045920.2 discloses a coal mine support ground pressure detection device. By rotating the driving rocker arm to drive the transmission worm to rotate, and then the transmission worm drives the transmission worm wheel to rotate, the rotation of the threaded rod can be enabled to adjust the support height of the second roof. This support adjustment process requires manual adjustment of the rocker arm, and the support structure is the thread fit between the threaded rod and the threaded sleeve. The construction environment in the coal mine has a large amount of dust, which will have a greater impact on the worm gear and worm cooperation and the thread fit transmission. The worm gear and worm structure and the detection device are independently matched, resulting in a higher processing cost of the device. At the same time, the second roof in contact with the coal mine roof is a flat plate structure, and its adaptability to the coal mine roof is poor, and local uneven stress is likely to occur, affecting the accuracy of ground pressure detection.

[0003] In view of this, the present utility model is specifically proposed. Content of the Utility Model

[0004] The technical problem to be solved by the present utility model is to overcome the deficiencies of the prior art and provide a coal mine support ground pressure detection device. To solve the above technical problems, the basic concept of the technical solution adopted by the present utility model is:

[0005] A coal mine support ground pressure detection device includes a support bottom plate and a contact support plate. Above the support bottom plate, a transition support plate is arranged in parallel. A lower support column is fixedly installed on the transition support plate. The upper end of the lower support column is fixedly connected to the upper support column. The upper end of the upper support column is fixedly installed on the bottom surface of the support top plate. A pressure rod is fixedly arranged on the support top plate. The upper end of the pressure rod is fixedly connected to the contact support plate. Above the contact support plate, a strengthening fixing net is arranged. The strengthening fixing net is fixed to the top of the coal mine roadway by fixing nails. At the matching position between the lower end of the pressure rod and the support top plate, a limit matching seat is arranged. A detection matching pressure plate is fixedly arranged at the lower end of the pressure rod. A pressure detection groove is opened on the support top plate. A pressure sensor is installed in the pressure detection groove. A detection sensor one is fixedly installed at the middle position above the support top plate. A hydraulic rod is arranged at the middle position between the support top plate and the transition support plate. A ground pressure detector is fixedly arranged at the middle position above the support bottom plate. Detection sensors three are arranged on both sides of the ground pressure detector. Detection sensors two are fixedly arranged at the positions on both sides of the hydraulic rod on the transition support plate.

[0006] As a further scheme of the present utility model: The hydraulic rod is placed on the transition support plate. The detection sensor one, the detection sensor two and the detection sensor three are all distance measurement sensors. Two of each of the detection sensor one, the detection sensor two and the detection sensor three are provided, which are used to detect the change of the distance between adjacent two plates.

[0007] As a still further scheme of the present utility model: The contact support plate is of an arc surface structure. The strengthening fixing net is of a steel wire mesh structure. The area of the strengthening fixing net is larger than the area of the contact support plate. The arrangement of the strengthening fixing net is used to make the contact between the contact support plate and the top of the coal mine roadway bear pressure evenly.

[0008] As a still further scheme of the present utility model: Support blocks are arranged at the four corner positions above the support bottom plate. The top surface of the support block is fixedly connected to the bottom surface of the transition support plate. The support block is used to stably support the transition support plate.

[0009] As a still further scheme of the present utility model: The lower support column is an I-beam. Four lower support columns are provided. The upper support column is a group of two H-shaped steel structures, symmetrically arranged on both sides of the lower support column. A matching installation groove is arranged on the upper support column. The shape and size specifications of the matching installation groove are adapted to the lower support column.

[0010] As a further solution of the present utility model: fixing holes are correspondingly processed on both the lower support column and the upper support column, and fixing bolts are installed through the fixing holes. An alarm is arranged outside the mine pressure detector for alarm reminder.

[0011] After adopting the above technical solution, the present utility model has the following beneficial effects compared with the prior art.

[0012] In the mine support and mine pressure detection device of the present utility model, a strengthening fixing net is arranged between the upper part of the device and the coal mine roof wall to ensure uniform pressure bearing at the detection position of the device. The contact support plate is of an arc surface structure, having good adaptability and fitting degree with the top of the coal mine roadway. A pressure rod is arranged below the contact support plate, and a pressure sensor is arranged at the lower end of the pressure rod. The change of pressure bearing can be used as a reference basis for mine pressure detection.

[0013] Detection sensors are correspondingly arranged on the support roof, transition support plate and support bottom plate of the present utility model, which can effectively detect the distance between adjacent support plates, and then judge the deformation situation, and conduct comparative analysis with the pressure bearing situation to improve the mine pressure detection accuracy. At the same time, a hydraulic rod is selected for the lifting adjustment process. After the device is fixed at the support position, the hydraulic rod can be taken out for the adjustment and assembly of other detection devices.

[0014] The following further describes in detail the specific implementation manners of the present utility model with reference to the drawings. Description of the Drawings

[0015] As a part of this application, the drawings are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model, but do not constitute an improper limitation to the present utility model. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0016] Figure 1 is the structural schematic diagram of the present utility model;

[0017] Figure 2 is the front view of the present utility model;

[0018] Figure 3 is the matching schematic diagram of the lower support column and the upper support column of the present utility model;

[0019] Figure 4 is the assembly schematic diagram of the pressure rod and the support roof of the present utility model.

[0020] In the figure: 1. Support bottom plate; 2. Support block; 3. Transition support plate; 4. Lower support column; 5. Upper support column; 6. Hydraulic rod; 7. Support top plate; 8. Reinforcing fixing net; 9. Fixing nail; 10. Contact support plate; 11. Pressure rod; 12. Limit fitting seat; 13. Detection sensor one; 14. Detection sensor two; 15. Detection sensor three; 16. Mine pressure detector; 17. Alarm; 18. Fitting installation groove; 19. Fixing bolt; 20. Pressure detection groove; 21. Detection fitting pressure plate; 22. Pressure sensor.

[0021] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. Specific embodiments

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0023] As Figures 1 to 4 shown, a mine support mine pressure detection device includes a support bottom plate 1 and a contact support plate 10. A transition support plate 3 is arranged in parallel above the support bottom plate 1. A lower support column 4 is fixedly installed on the transition support plate 3. The upper end of the lower support column 4 is fixedly connected to the upper support column 5. The upper end of the upper support column 5 is fixedly installed on the bottom surface of the support top plate 7. A pressure rod 11 is fixedly arranged on the support top plate 7. The upper end of the pressure rod 11 is fixedly connected to the contact support plate 10. An enhancing fixing net 8 is arranged above the contact support plate 10. The enhancing fixing net 8 is fixed to the top of the coal mine roadway by fixing nails 9. A limit fitting seat 12 is arranged at the fitting position between the lower end of the pressure rod 11 and the support top plate 7. A detection fitting pressure plate 21 is fixedly arranged at the lower end of the pressure rod 11. A pressure detection groove 20 is formed on the support top plate 7. A pressure sensor 22 is installed in the pressure detection groove 20. A detection sensor one 13 is fixedly installed at the middle position above the support top plate 7. A hydraulic rod 6 is arranged at the middle position between the support top plate 7 and the transition support plate 3. A mine pressure detector 16 is fixedly arranged at the middle position above the support bottom plate 1. Detection sensors three 15 are arranged on both sides of the mine pressure detector 16. Detection sensors two 14 are fixedly arranged at the positions on both sides of the hydraulic rod 6 on the transition support plate 3.

[0024] Among them, the hydraulic rod 6 is placed on the transition support plate 3. The detection sensor one 13, the detection sensor two 14 and the detection sensor three 15 are all distance measuring sensors. There are two detection sensor one 13, detection sensor two 14 and detection sensor three 15 respectively, which are used to detect the change of the distance between adjacent two plates.

[0025] The contact support plate 10 has an arc surface structure, and the reinforcement fixing net 8 has a wire mesh structure. The area of the reinforcement fixing net 8 is larger than that of the contact support plate 10. The reinforcement fixing net 8 is provided to make the contact between the support plate 10 and the top of the coal mine roadway bear pressure evenly.

[0026] Support blocks 2 are arranged at the four corner positions above the support bottom plate 1. The top surface of the support block 2 is fixedly connected to the bottom surface of the transition support plate 3. The support block 2 is used to stably support the transition support plate 3.

[0027] The lower support columns 4 are I-beams. There are four lower support columns 4. The upper support columns 5 are a set of two I-shaped steel structures, symmetrically arranged on both sides of the lower support columns 4. The upper support columns 5 are provided with fitting installation grooves 18, and the shape and size specifications of the fitting installation grooves 18 are adapted to the lower support columns 4.

[0028] Fixing holes are correspondingly machined on both the lower support columns 4 and the upper support columns 5. Fixing bolts 19 are inserted and installed in the fixing holes. An alarm 17 is arranged outside the mine pressure detector 16 for alarm reminder.

[0029] The working principle of the present utility model is as follows: Move the device to the detection position in the coal mine roadway. The upper support columns 5 and the lower support columns 4 are slidably connected. The hydraulic rod 6 is placed on the transition support plate 3. The reinforcement fixing net 8 is fixed to the top of the coal mine roadway by fixing nails 9. The hydraulic rod 6 is connected to the hydraulic power equipment through a hydraulic pipeline. The hydraulic rod 6 extends, driving the support top plate 7 and the contact support plate 10 to move upward synchronously, so that the contact support plate 10 fits precisely with the top of the coal mine roadway and the reinforcement fixing net 8, realizing effective support. The magnitude of the support force can be detected according to the pressure sensor 22. Then, use drilling equipment to drill holes at the corresponding positions of the lower support columns 4 and the upper support columns 5, and use the fixing bolts 19 for fixed connection to lock the support position;

[0030] After the hydraulic rod 6 contracts, the hydraulic rod 6 can be removed for use by other support detection devices. The lower support columns 4 are made of I-shaped steel structures, and the support stability is good. After the support device is adjusted, the mine pressure detector 16 records the initial support data of each sensor. As the support time of the detection device increases, the contact support plate 10, the support top plate 7, and the transition support plate 3 deform. The detection sensors 13, 14, and 15 can effectively detect the change in the distance and determine the deformation situation. The pressure sensor 22 can also detect the pressure-bearing situation at the same time. When the detection result has a large deviation from the basic value, it indicates that there are certain potential safety hazards, and the alarm 17 will give an alarm for reminder;

[0031] The deviation detection standard can be adjusted according to specific construction requirements. The mine pressure detector 16 can receive the detection signals of each sensor and is used for the determination of detection results;

[0032] In the mine pressure detection device for coal mine support of the present utility model, a strengthening fixing net 8 is arranged between the upper part of the device and the coal mine roof wall to ensure uniform pressure bearing at the detection position of the device. The contact support plate 10 is of an arc surface structure and has good adaptability and fitting degree with the top of the coal mine roadway. A pressure rod 11 is arranged below the contact support plate 10, and a pressure sensor 22 is arranged at the lower end of the pressure rod 11. The change of pressure bearing can be used as a reference basis for mine pressure detection. Detection sensors are correspondingly arranged on the supporting roof 7, the transition support plate 3 and the supporting bottom plate 1, which can effectively detect the distance between adjacent support plates, and then judge the deformation condition, and conduct comparative analysis with the pressure bearing condition to improve the mine pressure detection accuracy. At the same time, a hydraulic rod 6 is selected during the lifting adjustment process. After the device is fixed at the support position, the hydraulic rod 6 can be taken out and used for the adjustment and assembly of other detection devices.

[0033] The above description is only a preferred embodiment of the present utility model and does not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present utility model, may make some changes or modifications to the above-mentioned technical content using the disclosed technical content to obtain equivalent embodiments with equivalent changes. However, as long as the content does not depart from the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A mine pressure detection device for coal mine support, comprising a support bottom plate (1) and a contact support plate (10), characterized in that, Above the said supporting bottom plate (1), a transition supporting plate (3) is arranged in parallel. A lower supporting column (4) is fixedly installed on the transition supporting plate (3). The upper end of the lower supporting column (4) is fixedly connected to an upper supporting column (5). The upper end of the upper supporting column (5) is fixedly installed on the bottom surface of a supporting top plate (7). A pressure rod (11) is fixedly arranged on the supporting top plate (7). The upper end of the pressure rod (11) is fixedly connected to a contact supporting plate (10). Above the contact supporting plate (10), a strengthening fixing net (8) is arranged. The strengthening fixing net (8) is fixed to the top of the coal mine roadway by fixing nails (9). At the matching position between the lower end of the pressure rod (11) and the supporting top plate (7), a limit matching seat (12) is arranged. A detection matching pressure plate (21) is fixedly arranged at the lower end of the pressure rod (11). A pressure detection groove (20) is formed in the supporting top plate (7). A pressure sensor (22) is installed in the pressure detection groove (20). A detection sensor one (13) is fixedly installed at the middle position above the supporting top plate (7). A hydraulic rod (6) is arranged at the middle position between the supporting top plate (7) and the transition supporting plate (3). A mine pressure detector (16) is fixedly arranged at the middle position above the supporting bottom plate (1). Detection sensors three (15) are arranged on both sides of the mine pressure detector (16). Detection sensors two (14) are fixedly arranged at the positions on both sides of the hydraulic rod (6) on the transition supporting plate (3).

2. The coal mine support ground pressure detection device according to claim 1, characterized in that, The hydraulic rod (6) is placed on the transition supporting plate (3). The detection sensor one (13), the detection sensor two (14) and the detection sensor three (15) are all distance measuring sensors. There are two of each of the detection sensor one (13), the detection sensor two (14) and the detection sensor three (15).

3. The coal mine support ground pressure detection device according to claim 2, wherein The contact supporting plate (10) is of an arc surface structure. The strengthening fixing net (8) is of a steel wire mesh structure. The area of the strengthening fixing net (8) is larger than the area of the contact supporting plate (10).

4. The coal mine support and mine pressure detection device according to claim 3, characterized in that, Supporting blocks (2) are arranged at the four corner positions above the supporting bottom plate (1). The top surface of the supporting blocks (2) is fixedly connected to the bottom surface of the transition supporting plate (3).

5. A coal mine support ground pressure detection device according to claim 4, characterized in that, The lower supporting column (4) is an I-beam. There are four lower supporting columns (4). The upper supporting column (5) is a set of two H-shaped steel structures, symmetrically arranged on both sides of the lower supporting column (4). A matching installation groove (18) is arranged on the upper supporting column (5). The shape and size specifications of the matching installation groove (18) are adapted to the lower supporting column (4).

6. The coal mine support ground pressure detection device according to claim 5, characterized in that, Fixing holes are correspondingly machined on both the lower supporting column (4) and the upper supporting column (5). Fixing bolts (19) are inserted and installed in the fixing holes. An alarm (17) is arranged outside the mine pressure detector (16).

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