Coal mining surface subsidence area crack measuring device

Abstract

The utility model discloses a coal mining surface subsidence area crack measuring device, which belongs to the technical field of crack measuring equipment and comprises a transverse frame and counterweight ends respectively mounted at two ends of the transverse frame, two supporting legs are arranged below the two counterweight ends, threaded rods are in threaded connection with the middles of the counterweight ends, and the threaded rods are connected with the transverse frame. The lower end of the threaded rod is movably connected with a spine head. The ground supporting device can be matched with supporting legs for supporting on the hard ground, the threaded rod can adjust the levelness of the transverse frame, due to the fact that the two supporting legs are arranged at the two ends, a stable supporting structure can still be formed in cooperation with the threaded rod, and when the ground meets the soft ground, a sharp thorn head can be assembled at the lower end of the threaded rod and pierces into soil, so that the ground supporting device is convenient to use. And when measurement is not carried out, the movable measuring needle is protected by sliding the movable measuring needle into the protection frame, so that the situation that the movable measuring needle is touched can be effectively prevented, and the movable measuring needle slides out to be used during use, so that the use is relatively convenient.

Description

Technical Field

[0001] The utility model relates to a crack measuring device, in particular to a crack measuring device for a coal mining surface subsidence area, belonging to the technical field of crack measuring equipment. Background Art

[0002] During the coal mining process, cracks may occur in the mining surface subsidence area. When cracks appear, in order to ensure the safety of the operation, it is necessary to measure the cracks. During the measurement, a professional coal mining surface subsidence area crack measurement device is required.

[0003] The Chinese authorized patent announcement number is (CN211646326U). A crack measuring device for the surface subsidence area of ​​coal mining can effectively adjust the horizontality of the measuring frame through the threaded connection between the support column and the measuring frame, and the horizontal fixation of the device is completed by inserting the limiting rod into the soil, which is convenient for operation. The support of the limit block by the spring can make the limit block and the lower surface of the slide groove snap together, thereby effectively avoiding the phenomenon of arbitrary sliding of the installation block and ensuring the stability of the measuring axis during operation. The threaded connection between the protective sleeve and the connecting block facilitates the installation and disassembly of the protective sleeve. The limiting rod is shielded by the protective sleeve to avoid the problem of the limiting rod injuring people during transportation and ensure the safety of transportation.

[0004] However, the measuring needle is easy to be bumped when not measuring during transportation, resulting in inaccurate measurement and affecting the measurement result. At the same time, the tip of the lower part of the limiting rod is not easy to use in places with hard ground, which is not convenient for measurement. Utility Model Content

[0005] The main purpose of the utility model is to solve the problem that the outer measuring needle is easy to hit, which affects the measurement accuracy and is not suitable for environments with hard ground, and to provide a crack measuring device for surface subsidence areas in coal mining.

[0006] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0007] A crack measuring device for surface subsidence areas in coal mining, comprising a transverse frame and counterweight ends respectively mounted on both ends of the transverse frame, two supporting legs are arranged below the two counterweight ends, a threaded rod is threadedly connected to the middle part of the counterweight end, a spike head is movably connected to the lower end of the threaded rod, a sliding cavity is opened in the middle part of the transverse frame, two measuring rods are slidably connected to the sliding cavity, the measuring rod comprises a protective frame and two limiting wheels mounted on one end of the protective frame, both ends of the two limiting wheels are arranged with assembly plates, a limiting plate is installed on the outer wall of the assembly plate away from the protective frame, a movable cavity is opened in the middle part of the protective frame, a movable measuring needle is slidably connected in the movable cavity.

[0008] Preferably, a level is provided at the upper end of the transverse frame.

[0009] Preferably, a scale mark is provided on one side wall of the transverse frame.

[0010] Preferably, a scale pointer is provided at the upper end of the protection frame, and a movable baffle is installed on the outer wall of the protection frame by bolts.

[0011] Preferably, both the upper end and the lower end of the assembly plate are provided with arc corners.

[0012] Preferably, a sliding groove for sliding of the limiting wheel is provided inside the sliding cavity, and the upper and lower ends of the assembly plate are slidably connected to the inner wall of the sliding cavity.

[0013] Preferably, a cavity is provided on the other side wall of the transverse frame, and a mounting plate is installed inside the cavity.

[0014] Preferably, rollers are installed at both the upper and lower ends of the limit plate, and the limit plate is movably connected to the inner wall of the cavity through the rollers.

[0015] Preferably, a fixing plate is installed on the upper end of the assembly plate.

[0016] Preferably, a clamping bolt is installed on the fixing plate, and a rubber pad is provided at the lower end of the clamping bolt.

[0017] The beneficial technical effects of the utility model are as follows: according to the crack measuring device for the surface subsidence area of ​​coal mining of the utility model, it is supported by the counterweight end head and plays a stabilizing role at the same time. When on hard ground, it can be used in conjunction with the supporting legs for support. When cooperating with the threaded rod, the spike head is removed so that the threaded rod can adjust the level of the transverse frame. Since two supporting legs are arranged at both ends, a stable supporting structure can still be formed in conjunction with the threaded rod. When encountering soft ground, the spike head can also be assembled at the lower end of the threaded rod and penetrated into the soil. It can be flexibly adapted. When not measuring, the movable measuring needle can be protected by sliding it into the protective frame, which can effectively prevent the movable measuring needle from being hit. It can be slid out for use during use, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the utility model;

[0019] Figure 2 A side view of the overall structure of a preferred embodiment of the utility model;

[0020] Figure 3 A schematic diagram of the structure of a measuring rod according to a preferred embodiment of the utility model;

[0021] Figure 4 A schematic diagram of the structure of an assembly plate according to a preferred embodiment of the utility model;

[0022] Figure 5 It is a schematic diagram of the structure of a limiting plate according to a preferred embodiment of the utility model;

[0023] Figure 6 A schematic diagram of the structure of a counterweight end head according to a preferred embodiment of the utility model;

[0024] Figure 7 It is a schematic diagram of a transverse frame structure according to a preferred embodiment of the utility model.

[0025] In the figure: 1. horizontal frame; 2. counterweight end; 3. threaded rod; 4. measuring rod; 5. level; 6. limit wheel; 7. limit plate; 8. fixing plate; 9. clamping bolt; 10. movable measuring needle; 11. scale pointer; 12. movable baffle; 13. assembly plate; 14. roller; 15. rubber pad; 16. spike head; 17. support leg; 18. scale mark; 19. mounting plate. DETAILED DESCRIPTION

[0026] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the present invention are not limited thereto.

[0027] like Figure 1-Figure 7As shown, the crack measuring device for the surface subsidence area of ​​coal mining provided by the present embodiment comprises a transverse frame 1 and counterweight ends 2 respectively installed on the two ends of the transverse frame 1, two supporting legs 17 are arranged below the two counterweight ends 2, a threaded rod 3 is threadedly connected to the middle part of the counterweight end 2, and a spike head 16 is movably connected to the lower end of the threaded rod 3, a sliding cavity is opened in the middle part of the transverse frame 1, and two measuring rods 4 are slidably connected to the sliding cavity, and the measuring rod 4 comprises a protective frame and two limiting wheels 6 installed on one end of the protective frame, and assembly plates 13 are arranged at both ends of the two limiting wheels 6, and a limiting plate 7 is installed on the outer wall of the assembly plate 13 away from the protective frame, and a movable cavity is opened in the middle part of the protective frame, and a The movable measuring needle 10 is supported by the counterweight end 2 and also plays a stabilizing role. When on hard ground, it can be supported in conjunction with the supporting legs 17. When cooperating with the threaded rod 3, the spike head 16 can be removed so that the threaded rod 3 can adjust the level of the transverse frame 1. Since two supporting legs 17 are provided at both ends, a stable supporting structure can still be formed in conjunction with the threaded rod 3. When encountering soft ground, the spike head 16 can also be assembled at the lower end of the threaded rod 3 and inserted into the soil. It can be flexibly adapted. When not measuring, the movable measuring needle 10 can be protected by sliding it into the protective frame, which can effectively prevent the movable measuring needle 10 from being hit. It can be slid out for use during use, which is more convenient.

[0028] In this embodiment, if Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, a level 5 is provided at the upper end of the transverse frame 1 for leveling, a scale mark 18 is provided on one side wall of the transverse frame 1, a scale pointer 11 is provided at the upper end of the protection frame for use with the scale mark 18, a movable baffle 12 is installed on the outer wall of the protection frame by bolts, and arc angles are provided at the upper and lower ends of the assembly plate 13 for easy sliding, a sliding groove for sliding of the limiting wheel 6 is provided inside the sliding cavity, and the upper and lower ends of the assembly plate 13 are slidably connected to the inner wall of the sliding cavity, A cavity is opened on the side wall of the other side of the transverse frame 1, and a mounting plate 19 is installed inside the cavity. Rollers 14 are installed on the upper and lower ends of the limit plate 7 to facilitate the sliding of the limit plate 7 and avoid the displacement of the measuring rod 4 when it slides. The limit plate 7 is movably connected to the inner wall of the cavity through the roller 14. A fixing plate 8 is installed on the upper end of the assembly plate 13, and a clamping bolt 9 is installed on the fixing plate 8. A rubber pad 15 is provided at the lower end of the clamping bolt 9 for clamping the measuring rod 4 during measurement.

[0029] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A crack measurement device for coal mining surface subsidence area, characterized in that: The invention comprises a transverse frame (1) and counterweight ends (2) respectively mounted on both ends of the transverse frame (1), two supporting legs (17) are arranged below the two counterweight ends (2), a threaded rod (3) is threadedly connected to the middle of the counterweight end (2), a spike head (16) is movably connected to the lower end of the threaded rod (3), a sliding cavity is opened in the middle of the transverse frame (1), two measuring rods (4) are slidably connected to the sliding cavity, the measuring rods (4) comprise a protection frame and two limiting wheels (6) mounted on one end of the protection frame, both ends of the two limiting wheels (6) are provided with assembly plates (13), a limiting plate (7) is installed on the outer wall of the assembly plate (13) away from the protection frame, a movable cavity is opened in the middle of the protection frame, and a movable measuring needle (10) is slidably connected in the movable cavity.

2. A crack measurement device for coal mining surface subsidence area according to claim 1, characterized in that: A level (5) is provided at the upper end of the transverse frame (1).

3. A crack measurement device for coal mining surface subsidence area according to claim 1, characterized in that: A scale mark (18) is provided on one side wall of the transverse frame (1).

4. A crack measurement device for coal mining surface subsidence area according to claim 3, characterized in that: A scale pointer (11) is arranged at the upper end of the protection frame, and a movable baffle (12) is installed on the outer wall of the protection frame via bolts.

5. A crack measurement device for coal mining surface subsidence area according to claim 4, characterized in that: The upper end and the lower end of the assembly plate (13) are both provided with arc corners.

6. A device for measuring cracks in a coal mining surface subsidence area according to claim 5, characterized in that: A sliding groove for the sliding of the limiting wheel (6) is provided inside the sliding cavity, and the upper and lower ends of the assembly plate (13) are slidably connected to the inner wall of the sliding cavity.

7. A crack measurement device for coal mining surface subsidence area according to claim 6, characterized in that: A cavity is provided on the other side wall of the transverse frame (1), and a mounting plate (19) is installed inside the cavity.

8. A crack measurement device for coal mining surface subsidence area according to claim 7, characterized in that: Rollers (14) are installed at the upper and lower ends of the limit plate (7), and the limit plate (7) is movably connected to the inner wall of the cavity through the rollers (14).

9. A device for measuring cracks in a coal mining surface subsidence area according to claim 1, characterized in that: A fixing plate (8) is installed on the upper end of the assembly plate (13).

10. A crack measurement device for coal mining surface subsidence area according to claim 9, characterized in that: A clamping bolt (9) is installed on the fixing plate (8), and a rubber pad (15) is arranged at the lower end of the clamping bolt (9).

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