Device for measuring displacement of top and bottom plates of mine

Abstract

The utility model discloses a device for measuring the displacement of a mine top plate and a mine bottom plate, which comprises a supporting mechanism and a measuring mechanism, the supporting mechanism comprises a fixed block, at least three telescopic rods and a spirit level, one end of each telescopic rod is hinged to the fixed block, the other end of each telescopic rod is used for being placed on the mine bottom plate, and the measuring mechanism is used for measuring the displacement of the mine top plate and the mine bottom plate. The spirit level is fixed on the fixed block and is parallel to the fixed block; the measuring mechanism comprises a measuring cylinder, a pressure sensor, a sliding block, an elastic piece, an insertion pipe and a lengthening rod. The beneficial effects of the utility model are that the level gauge is arranged on the fixed block, the level gauge can detect the horizontal state of the fixed block, and the levelness of the fixed block can be adjusted by adjusting the length of each telescopic rod, so that the measuring device can be kept vertical, and the accuracy and reliability of displacement measurement can be greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mine roof and floor displacement measurement technical field, concretely relates to a device for measuring the displacement of mine roof and floor. BACKGROUND

[0002] In the process of mining, the displacement monitoring of mine roof and floor is the key link to ensure the stability of mine structure and the safety of operation. Accurate measurement of roof and floor displacement is of great significance for preventing mine collapse, assessing the impact of mining activities on geological structure and developing effective mine maintenance strategies. Through continuous and accurate displacement monitoring, potential safety hazards can be found in time to provide data support for mine management departments, so that necessary preventive measures can be taken to protect personnel life and property safety.

[0003] However, most of the existing measuring devices lack built-in level detection function and rely entirely on the subjective judgment of installers for level correction. This installation method relying on manual judgment not only is inefficient, but also is easily affected by individual experience, visual error and other factors, which makes the device prone to tilt during installation and affects the accuracy of displacement measurement.

[0004] The tilted installation state will cause the measurement results of the measuring device to not truly reflect the actual displacement of the mine roof and floor. This deviation not only reduces the reliability of the data, but also may mislead the judgment of the mine management department on the safety of the mine, increasing the risk of mine operation. SUMMARY

[0005] The purpose of the utility model is to overcome the above technical deficiencies and provide a device for measuring the displacement of mine roof and floor, which solves the technical problem of the lack of level detection function in the installation of the existing mine roof and floor displacement measuring device, resulting in installation tilt and low measurement accuracy.

[0006] To achieve the above technical purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a device for measuring the displacement of mine roof and floor, comprising:

[0008] A support mechanism, the support mechanism comprises a fixed block, at least three telescopic rods and a level, one end of each telescopic rod is hinged to the fixed block, the other end of each telescopic rod is used to be placed on the mine floor, the level is fixed to the fixed block and is arranged in parallel with the fixed block; and,

[0009] The measuring mechanism comprises a measuring cylinder, a pressure sensor, a sliding block, an elastic member, a cannula and an extension rod, the measuring cylinder is vertically fixed to the fixed block, the pressure sensor is fixed to the bottom of the measuring cylinder, the sliding block is slidingly arranged in the measuring cylinder, the two ends of the elastic member are connected with the pressure sensor and the sliding block respectively, one end of the cannula is slidingly inserted into the measuring cylinder and fixedly connected with the sliding block, one end of the extension rod is detachably connected with the other end of the cannula, and the other end of the extension rod is used for contacting the mine roof.

[0010] In some embodiments, the telescopic rod comprises a hinged block, an internally threaded pipe and an adjusting screw rod, one end of the hinged block is hinged to the fixed block via a damping rotating shaft, one end of the internally threaded pipe is fixed to the other end of the hinged block, one end of the adjusting screw rod is threadedly inserted into the other end of the internally threaded pipe, and the other end of the adjusting screw rod is used for contacting the mine floor.

[0011] In some embodiments, a pad block is mounted to the other end of the adjusting screw rod, and the pad block is used for contacting the mine floor.

[0012] In some embodiments, the level comprises a level housing, the level housing is fixed to the fixed block, a closed level cavity is formed in the level housing, and a liquid and a bubble are encapsulated in the level cavity.

[0013] In some embodiments, the measuring cylinder is detachably fixed to the fixed block.

[0014] In some embodiments, a bushing is formed in the fixed block, a side hole is formed in the side wall of the fixed block and communicates with the bushing, a locking screw hole is formed in the side wall of the lower end of the measuring cylinder and matches the side hole, and the measuring mechanism further comprises a locking screw, the locking screw is used for being threadedly connected to the locking screw hole after passing through the side hole.

[0015] In some embodiments, an accommodating cavity is further formed in the lower end of the measuring cylinder, a power supply is fixed in the accommodating cavity, and the power supply is electrically connected with the pressure sensor.

[0016] In some embodiments, the measuring mechanism further comprises a display, the display is fixed to the measuring cylinder and electrically connected with the pressure sensor.

[0017] In some embodiments, the extension rod comprises a plurality of extension rods, each of the extension rods is coaxially and detachably connected with the adjacent extension rods in sequence.

[0018] In some embodiments, one end of each of the extension rods is formed with a threaded stud, the other end of each of the extension rods is formed with a connecting screw hole, and the threaded stud is threadedly connected into the screw hole of the adjacent extension rod.

[0019] The extension rod is used for slidingly inserting into the other end of the insertion tube, a fixing screw hole is formed in the side wall of the insertion tube, and the measuring mechanism further comprises a fixing screw, which is threadedly connected to the fixing screw hole and abuts against the outer side wall of the extension rod inserted into the insertion tube.

[0020] Compared with the prior art, the device for measuring the displacement of the roof and floor of a mine has the beneficial effects that: the leveler is arranged on the fixing block, the leveler can detect the horizontal state of the fixing block, the horizontal degree of the fixing block can be adjusted by adjusting the lengths of the telescopic rods, the measuring device can be kept vertical, and thus the accuracy and reliability of displacement measurement are greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of the device for measuring the displacement of the roof and floor of a mine provided by an embodiment of the utility model;

[0022] Figure 2 is a structural schematic view of the support mechanism in Figure 1 ;

[0023] Figure 3 is a sectional structural schematic view of the support mechanism in Figure 2 ;

[0024] Figure 4 is a structural schematic view of the measuring mechanism in Figure 1 ;

[0025] Figure 5 is a local enlarged view of region A in Figure 1 ;

[0026] Figure 6 is a local enlarged view of region B in Figure 1 ;

[0027] Mark 1 - support mechanism, 11 - fixing block, 111 - insertion hole, 12 - telescopic rod, 121 - hinged block, 122 - internal threaded pipe, 123 - adjusting screw rod, 1231 - pad, 124 - damping rotating shaft, 13 - leveler, 131 - leveler shell, 132 - bubble, 2 - measuring mechanism, 21 - measuring cylinder, 211 - locking screw hole, 212 - containing cavity, 22 - pressure sensor, 23 - sliding block, 24 - elastic member, 25 - insertion tube, 26 - extension rod, 261 - extension rod, 2611 - stud, 27 - locking screw, 28 - power supply, 29 - fixing screw, 3 - display. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples.

[0029] In order to solve the technical problem that the roof-to-floor displacement measuring device lacks horizontal detection function during installation, resulting in installation inclination and low measurement accuracy, the utility model provides a device for measuring the roof-to-floor displacement of a mine, which can detect and correct the inclination state during installation, ensure that the measuring device remains vertical, and greatly improve the accuracy and reliability of displacement measurement.

[0030] Please refer to Figures 1-6 , Figure 1 It is a structural schematic view of the device for measuring the roof-to-floor displacement of a mine in an embodiment of the utility model, and the device for measuring the roof-to-floor displacement of a mine comprises a support mechanism 1 and a measuring mechanism 2.

[0031] The support mechanism 1 comprises a fixed block 11, at least three telescopic rods 12 and a level 13, one end of each telescopic rod 12 is hinged to the fixed block 11, the other end of each telescopic rod 12 is used to be placed on the mine floor, and the level 13 is fixed to the fixed block 11 and arranged in parallel with the fixed block 11.

[0032] The measuring mechanism 2 comprises a measuring cylinder 21, a pressure sensor 22, a sliding block 23, an elastic member 24, a cannula 25 and an extension rod 26, the measuring cylinder 21 is fixed vertically to the fixed block 11, the pressure sensor 22 is fixed to the bottom of the measuring cylinder 21, the sliding block 23 is slidingly arranged in the measuring cylinder 21, the elastic member 24 is connected to the pressure sensor 22 and the sliding block 23 at both ends, one end of the cannula 25 is slidingly inserted into the measuring cylinder 21 and fixedly connected to the sliding block 23, one end of the extension rod 26 is detachably connected to the other end of the cannula 25, and the other end of the extension rod 26 is used to contact the mine roof.

[0033] In use, the telescopic rods 12 are stably placed on the mine floor, and then the level 13 is observed to determine whether the fixing block 11 is horizontal, if not, the length of the telescopic rods 12 is adjusted to ensure that the fixing block 11 is horizontal, after the horizontal adjustment is completed, one end of the extension rod 26 is connected to the other end of the insertion pipe 25, and the other end of the extension rod 26 is in contact with the mine roof, after the installation is completed, the initial pressure value is measured by the pressure sensor 22, when the mine roof moves relative to the mine floor, the mine roof presses the extension rod 26, the extension rod 26 presses the elastic piece 24 through the insertion pipe 25 and the sliding block 23, the elastic piece 24 is contracted, the pressure acting on the pressure sensor 22 is increased, and the displacement amount of the mine floor and roof can be calculated according to the pressure increase value.

[0034] The utility model discloses a level 13 is arranged on the fixing block 11, the level 13 can detect the horizontal state of the fixing block 11, and the length of each telescopic rod 12 can be adjusted to realize the horizontal degree adjustment of the fixing block 11, and the measurement device can be kept vertical, thereby the accuracy and reliability of displacement measurement are greatly improved.

[0035] In one embodiment, please refer to Figures 1-3 The telescopic rod 12 includes a hinged block 121, an internal threaded pipe 122 and an adjusting screw 123, one end of the hinged block 121 is hinged to the fixing block 11 through a damping pivot 124, one end of the internal threaded pipe 122 is fixed to the other end of the hinged block 121, one end of the adjusting screw 123 is threadedly inserted into the other end of the internal threaded pipe 122, and the other end of the adjusting screw 123 is used for installing a pad 1231 and contacting the mine floor. In use, the length of the telescopic rod 12 is adjusted by rotating the adjusting screw to adjust the length of the telescopic rod 12, so as to facilitate the horizontal adjustment.

[0036] In one embodiment, please refer to Figures 1-3 The other end of the adjusting screw 123 is provided with a pad 1231, and the pad 1231 is used for contacting the mine floor. By setting the pad, the friction force between the pad and the mine floor can be improved to prevent slipping.

[0037] In one embodiment, please refer to Figure 1 And Figure 2 The level 13 includes a level housing 131, the level housing 131 is fixed to the fixing block 11, a closed level cavity is formed in the level housing 131, and a liquid and a bubble 132 are encapsulated in the level cavity. In use, whether the fixing block is horizontal is determined by observing whether the bubble 132 is centered.

[0038] In one embodiment, please refer to Figure 1 And Figure 4The measuring cylinder 21 is detachably fixed to the fixing block 11. Specifically, a socket 111 is formed in the fixing block 11, a side hole is formed in the side wall of the fixing block 11 and communicates with the socket 111, and a locking screw hole 211 is formed in the side wall of the lower end of the measuring cylinder 21 and matches the side hole. The measuring mechanism 2 further comprises a locking screw 27 which is used to be screwed into the locking screw hole 211 through the side hole. In this embodiment, the measuring cylinder 21 is detachably fixed to the fixing block 11, so that the measuring cylinder 21 can be detached when the device is not used, thereby reducing the length of the whole device for convenient transportation and carrying.

[0039] In one embodiment, referring to Figure 1 and Figure 4 , the lower end of the measuring cylinder 21 further forms an accommodating cavity 212 inside, and a power supply 28 is fixed in the accommodating cavity 212 and electrically connected with the pressure sensor 22. The power supply 28 can be used to supply power to the pressure sensor 22.

[0040] In one embodiment, referring to Figure 1 and Figure 4 , the measuring mechanism 2 further comprises a display 3 which is fixed to the measuring cylinder 21 and electrically connected with the pressure sensor 22. The display provides real-time measurement data for convenient monitoring and analysis by the user.

[0041] In one embodiment, referring to Figure 1 , Figure 5 and Figure 6 , the lengthening rod 26 comprises a plurality of extension rods 261 which are coaxially and detachably connected in sequence. In use, a proper number of extension rods 261 are selected according to the distance between the roof and floor of the mine, and are connected in sequence to obtain the lengthening rod 26. The lower end of the lengthening rod 26 is inserted into the upper end of the insertion tube 25, the height of the lengthening rod 26 is adjusted so that the upper end of the lengthening rod 26 abuts against the roof of the mine, and the elastic member 24 is in a moderate compression state when the upper end of the lengthening rod 26 abuts against the roof of the mine. After the lengthening rod 26 is adjusted to the appropriate position, the lower end of the lengthening rod 26 is fixed to the upper end of the insertion tube 25.

[0042] In one embodiment, referring to Figure 1 , Figure 5 and Figure 6The one end of each of the extension rods 261 is formed with a threaded stud 2611, and the other end of each of the extension rods 261 is provided with a connecting threaded hole, and the threaded stud 2611 is used for being screwed into the connecting threaded hole of the adjacent extension rod 261; the extension rod 261 is used for being slidingly inserted into the other end of the insertion tube 25, and the side wall of the insertion tube 25 is provided with a fixing threaded hole, and the measuring mechanism 2 further comprises a fixing screw 29, the fixing screw 29 is screwed into the fixing threaded hole and abuts against the outer side wall of the extension rod 261 inserted into the insertion tube 25, and the fixing screw 29 can prevent the extension rod 261 from moving up and down in the insertion tube 25.

[0043] In the embodiment, the specific adjustment method of the extension rod 26 is as follows: first, one hand holds the insertion tube 25 and presses downward, so that the elastic element 24 is contracted, and then the other hand holds the extension rod 26 and moves upward until the upper end of the extension rod 26 abuts against the mine roof, then another worker tightens the fixing screw 29, and then the device is loosened; since the elastic element 24 is in the contracted state, a pre-tightening force is provided to the extension rod 26, so that the extension rod 26 is tightly abutted against the mine roof. If only one worker operates, the hand holding the insertion tube 25 can be placed at the contact position of the insertion tube 25 and the extension rod 26, and when the extension rod 26 is moved to the top, one hand holds the contact position of the insertion tube 25 and the extension rod 26, and the other hand tightens the fixing screw 29.

[0044] In order to better understand the present application, the following is combined with the specific description of the present application Figures 1 to 6 The technical scheme of the present application is described in detail as follows: in use, each telescopic rod 12 is stably placed on the mine floor, then the level 13 is observed to determine whether the fixed block 11 is horizontal, if not, the length of the telescopic rod 12 is adjusted to ensure that the fixed block 11 is horizontal, after the horizontal adjustment is completed, the extension rod 26 is moved upward in the insertion tube 25 until the other end of the extension rod 26 is in contact with the mine roof, and then the extension rod 26 is fixed to the insertion tube 25, after the installation is completed, the initial pressure value is measured by the pressure sensor 22, when the mine roof moves relative to the mine floor, the mine roof presses the extension rod 26, the extension rod 26 presses the elastic element 24 through the insertion tube 25 and the sliding block 23, the elastic element 24 is contracted, the pressure acting on the pressure sensor 22 is increased, and the displacement amount of the mine roof and floor can be calculated according to the increase value of the pressure.

[0045] The present application can detect the horizontal state of the fixed block 11 through the level 13, and the horizontal degree of the fixed block 11 can be adjusted by adjusting the length of each telescopic rod 12, so that the measuring device can be kept vertical, thereby greatly improving the accuracy and reliability of the displacement measurement.

[0046] The specific implementation of the utility model above does not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A device for measuring the amount of displacement of a mine roof and floor, characterised in that, The utility model provides a kind of mine roof-to-floor distance measuring device, including: Supporting mechanism, the supporting mechanism includes fixed block, at least three telescopic rods and leveler, one end of each telescopic rod is hinged to the fixed block, the other end of each telescopic rod is used to place in mine floor, the leveler is fixed to the fixed block, and it is parallel with the fixed block arrangement;And, Measuring mechanism, the measuring mechanism includes measuring cylinder, pressure sensor, sliding block, elastic member, cannula and lengthening rod, the measuring cylinder is vertically fixed to the fixed block, the pressure sensor is fixed to the bottom of the measuring cylinder, the sliding block is slidably arranged in the measuring cylinder, the elastic member is connected with the pressure sensor and the sliding block respectively, one end of the cannula is slidably inserted into the measuring cylinder and fixedly connected with the sliding block, one end of the lengthening rod is detachably connected with the other end of the cannula, and the other end of the lengthening rod is used to contact with mine roof.

2. The device for measuring the displacement of a mine roof and floor according to claim 1, characterized in that, The telescopic rod includes a hinge block, an internally threaded tube and an adjusting screw rod, one end of the hinge block is hinged to the fixed block via a damping pivot, one end of the internally threaded tube is fixed to the other end of the hinge block, and one end of the adjusting screw rod is threadedly inserted into the other end of the internally threaded tube.

3. The device for measuring the displacement of a mine roof and floor according to claim 2, characterized in that, The other end of the adjusting screw rod is provided with a pad, and the pad is used to contact with the mine floor.

4. The device for measuring the displacement of a mine roof and floor according to claim 1, characterized in that, The leveler includes a leveler housing, the leveler housing is fixed to the fixed block, a sealed level cavity is formed in the leveler housing, and the level cavity encapsulates liquid and air bubbles.

5. The device for measuring the displacement of a mine roof and floor according to claim 1, characterized in that, The measuring cylinder is detachably fixed to the fixed block.

6. The device for measuring the amount of displacement of a mine roof and floor according to claim 5, characterized in that, A socket is formed in the fixed block, a side hole is formed in the sidewall of the fixed block and communicates with the socket, a locking screw hole is formed in the sidewall of the lower end of the measuring cylinder and cooperates with the side hole, and the measuring mechanism further includes a locking screw, which is used to threadedly connect to the locking screw hole after passing through the side hole.

7. The device for measuring the displacement of a mine roof and floor according to claim 1, characterized in that, An accommodating cavity is further formed in the lower end of the measuring cylinder, and a power supply is fixed in the accommodating cavity and electrically connected with the pressure sensor.

8. The device for measuring the displacement of a mine roof and floor according to claim 1, characterized in that, The measuring mechanism further includes a display, which is fixed to the measuring cylinder and electrically connected with the pressure sensor.

9. The device for measuring the displacement of a mine roof and floor according to claim 1, characterized in that, The lengthening rod includes a plurality of extension rods, each of which is coaxially and detachably connected in sequence.

10. The device for measuring the amount of displacement of a mine roof and floor according to claim 9, characterized in that, One end of each of the extension rods is formed with a stud, and the other end of each of the extension rods is formed with a connecting screw hole, the stud is used to threadedly connect to the screw hole of the adjacent extension rod; The extension rod is used to be slidably inserted into the other end of the cannula, a fixing screw hole is formed in the sidewall of the cannula, and the measuring mechanism further includes a fixing screw, which is threadedly connected to the fixing screw hole and abuts against the outer sidewall of the extension rod inserted into the cannula.

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