Measurement instrument for local gradient of coal mine tunnel

Abstract

The utility model discloses a coal mine tunnel local slope measuring instrument which comprises a bottom plate, the top of the bottom plate is fixedly connected with two fixing frames, the interiors of the two fixing frames are both slidably connected with sliding rods, the bottoms of the sliding rods are fixedly connected with ground inserts, the interiors of the two fixing frames are both slidably connected with one-way tooth blocks, and the bottoms of the one-way tooth blocks are fixedly connected with ground inserts. One-way tooth grooves are formed in the outer portions of the two sliding rods. According to the utility model, during use and angle measurement, the sliding rod is pressed to slide downwards in the fixed frame, and the one-way tooth block and the one-way tooth groove are combined, so that the sliding rod is limited after sliding downwards in the fixed frame, the ground socket can be in contact with the slope surface, the friction force is improved, and the whole device is fast and stable; the device is placed on a slope, the balance weight ball can drive the swing rod to be vertically downward all the time, the rotating deviation angle of the pointer on the angle scale is observed, and the whole device is low in cost, high in practicability and not prone to damage.

Description

Technical Field

[0001] This utility model relates to the technical field of slope measuring instruments, specifically a local slope measuring instrument for coal mine roadways. Background Technology

[0002] Coal mine surveying is a crucial part of mine production and construction, and it forms the foundation for various tasks such as mine construction, production, renovation, and the formulation of long-term development plans. Coal mine surveying includes the detection of slopes in coal mine roadways.

[0003] A coal mine roadway partial slope measuring instrument, disclosed in announcement number CN221802886U, includes a base. Electric tracks are installed on both sides of the base's bottom surface, and electric push rods are fixedly connected to the corners of the base's upper surface. The telescopic ends of the electric push rods are fixedly connected to chisels for insertion into the coal mine roadway surface. Several electric telescopic rods are fixedly connected to the upper surface of the base, and springs are fixedly connected to the telescopic ends of these rods. By using the electric tracks and chisels, the slope plate can be moved to any position on the roadway slope using the electric tracks, and the base is then completely fixed by inserting the chisels into the slope. Therefore, this invention can detect the slope at any position on the roadway slope. However, the aforementioned coal mine roadway partial slope measuring instrument has a relatively simple structure and is not convenient for limiting movement. The overall assembly is mostly based on pads, resulting in high instrument costs and susceptibility to damage. Therefore, it is necessary to provide a new coal mine roadway partial slope measuring instrument to solve the above technical problems. Utility Model Content

[0004] The purpose of this utility model is to provide a local slope measuring instrument for coal mine roadways, which has the advantages of low cost, not being easily damaged, and quick limit positioning, thus solving the problems in the background technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a local slope measuring instrument for coal mine roadways, comprising: a base plate, two fixed frames fixedly connected to the top of the base plate, a sliding rod slidably connected inside each of the two fixed frames, a ground plug fixedly connected to the bottom of each sliding rod, a one-way toothed block slidably connected inside each of the two fixed frames, a one-way toothed groove formed on the outside of each of the two sliding rods, two insertion holes formed inside the base plate, a fixed plate fixedly connected to the top of the base plate, an angle disc fixedly connected to the top of the fixed plate, and an externally rotatable connecting... The device is equipped with a pendulum rod, with a pointer and a counterweight ball fixedly connected to its two ends. In use, by placing the device on a slope, the counterweight ball will drive the pendulum rod to always move vertically downwards. The angle can be measured by observing the angle of the pointer's rotation on the angle dial. During the process, the sliding rod is pressed down inside the fixed frame. At the same time, the combination of one-way toothed blocks and one-way toothed grooves limits the sliding rod after it slides down inside the fixed frame, allowing the ground plug to contact the slope surface, increasing friction, and achieving rapid stabilization of the entire device. The overall device is low in cost, highly practical, and not easily damaged.

[0006] Preferably, the two slide rods are respectively locked inside the two insertion holes, the one-way toothed block engages with the outside of the one-way toothed groove, and the insertion holes can limit the movement of the slide rods, enabling the slide rods to slide vertically up and down inside the base plate.

[0007] Preferably, a return spring is fitted inside both of the fixed frames. The return spring is fixedly connected to the outside of the one-way tooth block. The elastic force of the return spring can act in the opposite direction on the one-way tooth block, so that the one-way tooth block is always engaged with the outside of the one-way tooth groove.

[0008] Preferably, a limiting plate is fixedly connected to the outside of both sliding rods, and a telescopic rod is fixedly connected to the bottom of the limiting plate. A limiting spring is sleeved on the outside of the telescopic rod. The elastic force of the limiting spring can act in the opposite direction on the limiting plate, so that the sliding rod always has an upward lifting force inside the fixed frame.

[0009] Preferably, both of the fixed frames are provided with sliding grooves on their exteriors, and a paddle is engaged inside the sliding groove. The paddle is fixedly connected to the exterior of the one-way toothed block. The paddle allows the one-way toothed block to disengage from the one-way toothed groove under external force, so that the slide rod slides upward and resets under the elastic force of the limiting spring.

[0010] Preferably, the tops of the two slide rods are fixedly connected to a connecting plate, which allows the user to press simultaneously, so that the two slide rods slide downwards in sync.

[0011] Preferably, the bottom of the base plate is rotatably connected to four casters, which facilitate the movement and displacement of the entire device and improve the flexibility of the entire device.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. When using this utility model, during the angle measurement process, the sliding rod is pressed down inside the fixed frame and slides downward. At the same time, the combination of one-way toothed block and one-way toothed groove realizes the limit of the sliding rod after sliding down inside the fixed frame, which can make the ground plug contact the slope surface to increase the friction and achieve rapid stabilization of the whole device.

[0014] II. This utility model, by placing the device on a slope, causes the counterweight ball to drive the pendulum to always be vertically downward. By observing the angle of the pointer's rotation and offset on the angle dial, the overall device is low in cost, highly practical, and not easily damaged. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external structure of a coal mine roadway local slope measuring instrument according to the present invention.

[0016] Figure 2 This is a schematic diagram of the internal structure of a coal mine roadway partial slope measuring instrument according to the present invention;

[0017] Figure 3 This is a schematic diagram of the internal disassembly structure of a coal mine roadway partial slope measuring instrument according to the present invention;

[0018] Figure 4 This is a schematic diagram of the internal structure of the fixed frame of a coal mine roadway local slope measuring instrument according to the present invention.

[0019] In the diagram: 1. Base plate; 2. Casters; 3. Fixed plate; 4. Angle plate; 5. Swing rod; 6. Pointer; 7. Counterweight ball; 8. Fixed frame; 9. Sliding rod; 10. Connecting plate; 11. Ground plug; 12. Limiting plate; 13. Socket; 14. Return spring; 15. One-way toothed block; 16. One-way toothed groove; 17. Telescopic rod; 18. Limiting spring; 19. Paddle shifter. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1 to 4This utility model provides a technical solution: a local slope measuring instrument for coal mine roadways, comprising: a base plate 1, two fixed frames 8 fixedly connected to the top of the base plate 1, a sliding rod 9 slidably connected inside each of the two fixed frames 8, a ground plug 11 fixedly connected to the bottom of each sliding rod 9, a one-way toothed block 15 slidably connected inside each of the two fixed frames 8, a one-way toothed groove 16 formed on the outside of each of the two sliding rods 9, two insertion holes 13 formed inside the base plate 1, a fixed plate 3 fixedly connected to the top of the base plate 1, an angle plate 4 fixedly connected to the top of the fixed plate 3, a swing rod 5 rotatably connected to the outside of the angle plate 4, and the swing rod 5... The device is fixedly connected to a pointer 6 and a counterweight ball 7 at both ends. When in use, the device is placed on a slope, and the counterweight ball 7 will drive the swing rod 5 to always be vertically downward. By observing the angle of rotation of the pointer 6 on the angle disk 4, the angle can be measured. During the process, the sliding rod 9 is pressed and slids downward inside the fixed frame 8. At the same time, the combination of the one-way tooth block 15 and the one-way tooth groove 16 limits the sliding rod 9 after it slides downward inside the fixed frame 8, which allows the ground plug 11 to contact the slope surface to increase friction and achieve rapid stabilization of the whole device. The whole device is low in cost, highly practical and not easily damaged.

[0022] Two sliding rods 9 are respectively locked inside two insertion holes 13. One-way toothed blocks 15 are engaged with the outside of one-way toothed grooves 16. Insertion holes 13 can limit the sliding rods 9, enabling the sliding rods 9 to slide vertically up and down inside the base plate 1.

[0023] Both fixed frames 8 are fitted with a return spring 14 inside. The return spring 14 is fixedly connected to the outside of the one-way tooth block 15. The elastic force of the return spring 14 can act in the opposite direction on the one-way tooth block 15, so that the one-way tooth block 15 is always engaged with the outside of the one-way tooth groove 16.

[0024] Both sliding rods 9 are fixedly connected to a limiting plate 12. A telescopic rod 17 is fixedly connected to the bottom of the limiting plate 12. A limiting spring 18 is sleeved on the outside of the telescopic rod 17. The elastic force of the limiting spring 18 can act on the limiting plate 12 in the opposite direction, so that the sliding rod 9 always has an upward lifting force inside the fixed frame 8.

[0025] Both fixed frames 8 have sliding grooves on their exteriors, and a paddle 19 is fitted inside the sliding groove. The paddle 19 is fixedly connected to the exterior of the one-way toothed block 15. The paddle 19 can cause the one-way toothed block 15 to disengage from the one-way toothed groove 16 under external force, so that the slide rod 9 can slide upward and reset under the elastic force of the limit spring 18.

[0026] The tops of the two sliding rods 9 are fixedly connected to a connecting plate 10, which allows the user to press simultaneously, so that the two sliding rods 9 slide down synchronously.

[0027] When using this coal mine roadway partial slope measuring instrument, during the angle measurement process, the sliding rod 9 is pressed down inside the fixed frame 8 and slides downward. At the same time, the combination of the one-way tooth block 15 and the one-way tooth groove 16 realizes the limit of the sliding rod 9 after sliding down inside the fixed frame 8, which allows the ground plug 11 to contact the slope surface to increase the friction and achieve rapid stabilization of the entire device.

[0028] Please see Figures 1 to 4 This utility model provides a technical solution: a local slope measuring instrument for coal mine roadways, wherein the bottom of the base plate 1 is movably connected to four universal wheels 2, which facilitate the movement and displacement of the entire device and improve the flexibility of the entire device.

[0029] When using this coal mine roadway partial slope measuring instrument, the device is placed on a slope, and the counterweight ball 7 will drive the pendulum 5 to always be vertically downward. The angle of rotation of the pointer 6 on the angle dial 4 is observed.

[0030] The standard parts used in this embodiment can be purchased directly from the market, while the non-standard structural parts described in the specification and drawings can be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A local slope measuring instrument for coal mine roadways, characterised in that, Include: The bottom plate (1), the top of the bottom plate (1) is fixedly connected with two fixed frames (8), the inside of two fixed frames (8) is slidably connected with slide rod (9), the bottom of slide rod (9) is fixedly connected with ground plug (11), the inside of two fixed frames (8) is slidably connected with one-way tooth block (15), the outside of two slide rods (9) is provided with one-way tooth groove (16), the inside of bottom plate (1) is provided with two insertion holes (13), the top of fixed plate (3) is fixedly connected with bottom plate (1), the top of fixed plate (3) is fixedly connected with angle disc (4), the outside of angle disc (4) is movably connected with swing lever (5), the both ends of swing lever (5) are fixedly connected with pointer (6) and counterweight ball (7) respectively.

2. A coal mine roadway local slope measuring instrument according to claim 1, characterized in that: Two slide rods (9) are respectively clamped in the inside of two insertion holes (13), one-way tooth block (15) is engaged with the outside of one-way tooth groove (16).

3. The coal mine roadway local slope measuring instrument according to claim 1, characterized in that: The inside of two fixed frames (8) is sleeved with reset spring (14), reset spring (14) is fixedly connected with the outside of one-way tooth block (15).

4. The coal mine roadway local slope measuring instrument according to claim 1, characterized in that: The outside of two slide rods (9) is fixedly connected with limiting plate (12), the bottom of limiting plate (12) is fixedly connected with telescopic rod (17), the outside of telescopic rod (17) is sleeved with limiting spring (18).

5. The coal mine roadway local slope measuring instrument according to claim 1, characterized in that: The outside of two fixed frames (8) is provided with sliding groove, the inside of sliding groove is clamped with push piece (19), push piece (19) is fixedly connected with the outside of one-way tooth block (15).

6. The coal mine roadway local slope measuring instrument according to claim 1, characterized in that: The top of two slide rods (9) is fixedly connected with connecting plate (10) together.

7. The coal mine roadway local slope measuring instrument according to claim 1, characterized in that: The bottom of bottom plate (1) is movably connected with four universal wheels (2).

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