Novel roof separation instrument

Abstract

The utility model discloses a novel roof separation instrument which comprises an anchor head piece, a traction steel wire rope and a measuring mechanism, and the anchor head piece is connected with the measuring mechanism through the traction steel wire rope. The measuring mechanism comprises a fixed shell, a traction measuring piece and an angle sensor, the fixed shell comprises an inner shell and an outer shell, the outer shell is in a rectangular column shell shape with an opening in one side, the inner shell is in a rectangular column shell shape with an opening in one side, and the opening end of the inner shell is embedded in the inner side of the opening end of the outer shell; the traction measuring piece is located on the inner side of the outer shell and connected with the outer shell. The angle sensor is located on the inner side of the inner shell and connected with the inner shell. When the inner shell is embedded in the inner side of the opening end of the outer shell, the traction measuring piece is connected with the angle sensor. According to the utility model, the stretching amount of the traction steel wire rope and the settlement amount of the roof can be clearly seen, and the use effect of the roof separation instrument is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mine protection, and in particular to a novel roof delamination device. Background Technology

[0002] The roof delamination meter, also known as the roof delamination indicator, is a specialized monitoring instrument used to monitor the movement of roof strata. It can display the delamination status of roof strata within and outside the same range as the anchor bolts. Through comprehensive observation of roof delamination, it can provide guidance and warnings for the support and reform of anchor-mesh roadways.

[0003] Before installation, holes are drilled in the coal mine roof to facilitate the insertion and fixing of anchoring components. The anchoring components are then connected to displacement sensors outside the holes via measuring ropes. If the coal mine roof settles, causing the measuring rope and displacement sensors to move, the displacement sensors can acquire the amount of movement of the measuring rope in real time, thus achieving the effect of roof settlement measurement.

[0004] Patent No. ZL202010067563.8 discloses a roof separation meter alarm device and a coal mine roof monitoring system, which can trigger an alarm when the roof settles to a certain extent, effectively improving the safety of coal mine construction. In existing roof separation meter structures, the displacement sensor is usually installed in a fixed housing. The connection between the sensor and the measuring rope requires disassembling the fixed housing. Therefore, during the installation of the roof separation meter, the displacement sensor is usually pre-connected to the measuring rope, and then the anchoring components are installed in the construction area. However, the measuring rope is pulled during the installation of the anchoring components, and the already installed displacement sensor will generate measurement values ​​during the rope pulling process. After the anchoring components are installed, it is not easy to clear the installation process measurement values ​​generated by the displacement sensor. The roof settlement measurement operation can only be performed later using the original installation process measurement values. The later measurement values ​​of the displacement sensor need to be compared with the previous installation process measurement values ​​to understand the roof settlement status. It is not possible to directly and clearly see the amount of roof settlement, which affects the effectiveness of the roof separation meter. It is necessary to improve this design. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a novel top plate delamination instrument that is simple in structure and easy to use.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A novel roof delamination meter includes an anchor head, a tension wire rope, and a measuring mechanism. The anchor head is connected to the measuring mechanism via the tension wire rope. The measuring mechanism includes a fixed housing, a tension measuring component, and an angle sensor. The fixed housing includes an inner housing and an outer housing. The outer housing is a rectangular columnar shell with an opening on one side, and the inner housing is also a rectangular columnar shell with an opening on one side. The open end of the inner housing is nested inside the open end of the outer housing. The tension measuring component is located inside the outer housing and connected to it. The angle sensor is located inside the inner housing and connected to it. When the inner housing is nested inside the open end of the outer housing, the tension measuring component is connected to the angle sensor.

[0008] Furthermore, the tension measuring component includes a coil spring and a winding wheel. The coil spring is disposed on one side of the winding wheel, and a clamping post is disposed at the center of one axial end of the winding wheel. The coil spring is sleeved on the outside of the clamping post, and the center end of the coil spring is clamped and fixed to the clamping post. The outer end of the coil spring is connected to the outer shell. A mounting protrusion is disposed at the center of the other axial end of the winding wheel, and the mounting protrusion is connected to the angle sensor. One end of the tension wire rope is wound around the outside of the winding wheel, and the other end of the tension wire rope passes through the outer shell and is connected to the anchor head component.

[0009] Furthermore, a coil spring mounting groove is provided on the inner side of the outer shell, and a central groove is provided at the center of the inner center of the coil spring mounting groove. A traction post is provided on one side of the circumference of the coil spring mounting groove. The coil spring is nested in the coil spring mounting groove, and the outer end of the coil spring is connected to the traction post. One end of the clamping post extends into the central groove and can rotate within the central groove. A support plate is fixedly connected to the inner shell. The support plate is located on the side of the winding wheel away from the coil spring, and the support plate is provided with support holes corresponding to the mounting protrusions. The mounting protrusions on the winding wheel pass through the support holes and are connected to the angle sensor.

[0010] Furthermore, an installation plate is fixedly connected to the inner side of the opening end of the inner housing, and the installation plate is provided with a clearance hole corresponding to the support hole; the angle sensor is fixedly connected inside the inner housing, and the sensing shaft of the angle sensor extends out from the clearance hole and connects to the mounting protrusion on the winding wheel.

[0011] Furthermore, the mounting protrusion is provided with a transmission groove, the inner diameter of which is adapted to the outer diameter of the sensing shaft; when the inner housing is nested inside the opening end of the outer housing, the sensing shaft is inserted into the transmission groove and can be driven by the mounting protrusion to perform rotational measurement.

[0012] Furthermore, the outer shell has a sealing protrusion at the opening edge, and the inner shell has an integrally formed circumferential protrusion on the edge away from the opening edge, the outer diameter of the circumferential protrusion being consistent with the outer diameter of the outer shell; a sealing groove is provided on the end face of the circumferential protrusion near the outer shell, the sealing groove being adapted to the sealing protrusion; when the inner shell is nested inside the opening edge of the outer shell, the sealing protrusion is embedded in the sealing groove.

[0013] Furthermore, one end corner of each of the outer shell and the inner shell is set as an angled structure.

[0014] Furthermore, a positioning tube is fixedly connected to the top of the outer shell, and the inside of the positioning tube is connected to the coil spring mounting groove; one end of the pulling steel wire rope is wrapped around the outside of the winding wheel, and the other end of the pulling steel wire rope passes through the positioning tube and is connected to the anchor head.

[0015] Furthermore, a first connecting ear is provided on the side wall of the outer shell, and a take-up box is bolted to the first connecting ear; the take-up box is a cylindrical ring structure, and a second connecting ear is integrally formed on the outer circumference of the take-up box, and the second connecting ear is bolted to the first connecting ear.

[0016] Furthermore, the coil spring mounting groove, the tension measuring component, the angle sensor, the tension wire rope, and the anchor head are all provided in two sets to perform tension measurement operations on the two anchor head components.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are:

[0018] This invention employs a design consisting of an inner shell and an outer shell nested together to form a fixed shell. During assembly, the tension measuring component is pre-installed inside the outer shell, and the tension wire rope is connected to the tension measuring component and the anchor head. Then, the angle sensor is installed inside the inner shell. Next, upon reaching the construction area, the anchor head is inserted into the borehole, completing the anchor head installation. Finally, the inner and outer shells are nested together. After installation, a transmission connection is established between the angle sensor and the tension measuring component. When the tension wire rope and the tension measuring component move, the angle sensor displays the amount of movement of the tension measuring component, thereby measuring the elongation of the tension wire rope and the settlement of the roof slab.

[0019] The fixed housing structure of this roof separation meter adopts a split design. The angle sensor is assembled and connected only after the anchor head is installed. The angle sensor does not generate any measurement values ​​during the anchor head installation process. After the roof separation meter is installed, the elongation of the traction steel wire rope and the settlement of the roof can be clearly seen by simply checking the angle sensor, without any numerical comparison process, which effectively improves the use of the roof separation meter. Furthermore, the assembly operations between the inner and outer housings and between the angle sensor and the traction measuring component are simple and quick, enabling rapid assembly of the measuring mechanism and bringing convenience to the installation of the roof separation meter. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is an assembly structure diagram of the present invention;

[0023] Figure 3 This is an assembly structure diagram of the measuring mechanism;

[0024] Figure 4 This is a diagram of the internal structure of the outer shell;

[0025] Figure 5 This is a schematic diagram of the tension measuring component;

[0026] Figure 6 This is a diagram showing the connection structure between the angle sensor and the mounting plate.

[0027] Figure 7 This is an assembly structure diagram of the fixed housing and the take-up box. Detailed Implementation

[0028] 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, any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art to all other embodiments obtained without creative effort should be included within the protection scope of the present utility model.

[0029] like Figures 1 to 7 As shown, this embodiment discloses a novel top plate delamination instrument, including an anchor head 2, a pulling steel wire rope, and a measuring mechanism. The anchor head 2 is connected to the measuring mechanism via the pulling steel wire rope.

[0030] The measuring mechanism includes a fixed housing 1, a tension measuring component 5, and an angle sensor 8. The fixed housing 1 includes an inner housing 12 and an outer housing 11. The outer housing 11 is a rectangular cylindrical shell with an opening on one side, and the inner housing 12 is also a rectangular cylindrical shell with an opening on one side. The open end of the inner housing 12 is nested inside the open end of the outer housing 11. The tension measuring component 5 is located inside the outer housing 11 and is connected to the outer housing 11. The angle sensor 8 is located inside the inner housing 12 and is connected to the inner housing 12. When the inner housing 12 is nested inside the open end of the outer housing 11, the tension measuring component 5 is connected to the angle sensor 8.

[0031] The tension measuring component 5 includes a coil spring 52 and a winding wheel 51. The coil spring 52 is disposed on one axial side of the winding wheel 51. A clamping post 511 is disposed at the center of one axial end of the winding wheel 51. The coil spring 52 is sleeved on the outside of the clamping post 511, and the center end of the coil spring 52 is clamped and fixed to the clamping post 511. The outer end of the coil spring 52 is connected to the outer shell 11. A mounting protrusion 512 is disposed at the center of the other axial end of the winding wheel 51. A transmission groove 513 is disposed on the mounting protrusion 512. One end of the tension wire rope is wound around the outside of the winding wheel 51, and the other end of the tension wire rope passes through the outer shell 11 and is connected to the anchor head component 2.

[0032] The outer casing 11 has a spring mounting groove 112 on its inner side, and a central groove 113 at the center of the inner center of the spring mounting groove 112. A tension post 114 is provided on one side of the circumference of the spring mounting groove 112. The spring 52 is nested in the spring mounting groove 112, and the outer end of the spring 52 is connected to the tension post 114. One end of the clamping post 511 extends into the central groove 113 and can rotate within the central groove 113. A support plate 6 is fixedly connected inside the outer casing 11. The support plate 6 is located on the side of the winding wheel 51 away from the spring 52. The support plate 6 has a support hole 61 corresponding to the mounting protrusion 512. The mounting protrusion 512 on the winding wheel 51 passes through the support hole 61 and is connected to the angle sensor 8.

[0033] An installation plate 7 is fixedly connected to the inner side of the opening end of the inner housing 12. The installation plate 7 is provided with a clearance hole corresponding to the support hole 61. The angle sensor 8 is fixedly connected to the inner housing 12 through the connecting plate 9. The sensing shaft 81 of the angle sensor 8 extends out from the clearance hole. When the inner housing 12 and the outer housing 11 are fitted together, the extended sensing shaft 81 is inserted into the transmission groove 513 on the mounting protrusion 512. A limit structure is provided between the sensing shaft 81 and the transmission groove 513 so that after the sensing shaft 81 is inserted into the transmission groove 513, the mounting protrusion 512 can drive the sensing shaft 81 to perform a rotation measurement action.

[0034] The top of the outer shell 11 is fixedly connected to a positioning tube 3, and the inside of the positioning tube 3 is connected to the coil spring mounting groove 112; one end of the pulling steel wire rope is wrapped around the outside of the winding wheel 51, and the other end of the pulling steel wire rope passes through the positioning tube 3 and is connected to the anchor head 2.

[0035] After the anchor head is installed in the borehole, the positioning tube is inserted into the inside of the borehole port, leaving the fixed housing outside the top plate. At this time, under the elastic action of the coil spring, the winding wheel will wind the traction steel wire rope, and finally make the top of the fixed housing abut against the end face of the top plate. When the top plate settles, the fixed housing moves down, the steel wire rope will pull the winding wheel to rotate, and the winding wheel drives the angle sensor to generate a measurement value through the sensing shaft, thus realizing the measurement effect of the top plate settlement.

[0036] The outer shell 11 has a sealing protrusion 111 at its open end edge, and the inner shell 12 has an integrally formed circumferential protrusion 121 on its side edge away from the open end. The outer diameter of the circumferential protrusion 121 is the same as the outer diameter of the outer shell 11. The end face of the circumferential protrusion 121 near the outer shell 11 has a sealing groove 122, which is adapted to the sealing protrusion 111. When the inner shell 12 is nested inside the open end of the outer shell 11, the sealing protrusion 111 is embedded in the sealing groove 122 to improve the tightness of the connection between the outer shell 11 and the inner shell 12, and at the same time, it provides an internal waterproofing effect.

[0037] The outer shell 11 and the inner shell 12 are each configured with a beveled structure 115 at one corresponding end corner. When assembling the outer shell and inner shell in a coal mine construction area, visibility is low. The corresponding installation of the two shells can be achieved simply by touching the beveled structure on the outer shell and inner shell, making the installation operation more convenient.

[0038] The outer casing 11 has a first connecting ear 116 on its side wall and a take-up box 4 is bolted to the first connecting ear 116; the take-up box 4 is a cylindrical ring structure, and a second connecting ear 41 is integrally formed on the outer circumference of the take-up box 4, and the second connecting ear 41 is bolted to the first connecting ear 116.

[0039] In the structure of this utility model, the steel wire rope inside the take-up box is first connected to the anchor head. After the anchor head is installed, the steel wire rope on the outside of the winding wheel is connected to the middle of the previously installed steel wire rope to achieve the pulling effect of the pulling measuring component. This avoids the situation where it is necessary to overcome the pulling force generated by the pulling measuring component during the insertion of the anchor head into the drill hole, making the installation operation of the anchor head more convenient and further improving the use effect of this utility model.

[0040] The coil spring mounting groove 112, the tension measuring component 5, the angle sensor 8, the tension wire rope, and the anchor head component 2 are all provided in two sets to perform tension measurement operations on the two anchor head components.

[0041] This design enables the installation of two anchor heads, which can be installed and positioned at different depths within the borehole. This facilitates the measurement and analysis of roof settlement at different heights, further improving the effectiveness of the roof separation meter.

[0042] This invention employs a design consisting of an inner shell and an outer shell nested together to form a fixed shell. During assembly, the tension measuring component is pre-installed inside the outer shell, and the tension wire rope is connected to the tension measuring component and the anchor head. Then, the angle sensor is installed inside the inner shell. Next, upon reaching the construction area, the anchor head is inserted into the borehole, completing the anchor head installation. Finally, the inner and outer shells are nested together. After installation, a transmission connection is established between the angle sensor and the tension measuring component. When the tension wire rope and the tension measuring component move, the angle sensor displays the amount of movement of the tension measuring component, thereby measuring the elongation of the tension wire rope and the settlement of the roof slab.

[0043] The fixed housing structure of this roof separation meter adopts a split design. The angle sensor is assembled and connected only after the anchor head is installed. The angle sensor does not generate any measurement values ​​during the anchor head installation process. After the roof separation meter is installed, the elongation of the traction steel wire rope and the settlement of the roof can be clearly seen by simply checking the angle sensor, without any numerical comparison process, which effectively improves the use of the roof separation meter. Furthermore, the assembly operations between the inner and outer housings and between the angle sensor and the traction measuring component are simple and quick, enabling rapid assembly of the measuring mechanism and bringing convenience to the installation of the roof separation meter.

Claims

1. A novel roof delamination meter, comprising an anchor head, a tension wire rope, and a measuring mechanism, wherein the anchor head is connected to the measuring mechanism via the tension wire rope; characterized in that: The measuring mechanism includes a fixed housing, a tension measuring component, and an angle sensor. The fixed housing includes an inner housing and an outer housing. The outer housing is a rectangular cylindrical shell with an opening on one side, and the inner housing is also a rectangular cylindrical shell with an opening on one side. The open end of the inner housing is nested inside the open end of the outer housing. The tension measuring component is located inside the outer housing and connected to it. The angle sensor is located inside the inner housing and connected to it. When the inner housing is nested inside the open end of the outer housing, the tension measuring component is connected to the angle sensor.

2. The novel top plate delamination instrument as described in claim 1, characterized in that: The tension measuring component includes a coil spring and a winding wheel. The coil spring is located on one side of the winding wheel. A clamping post is located at the center of one axial end of the winding wheel. The coil spring is sleeved on the outside of the clamping post, and the center end of the coil spring is clamped and fixed to the clamping post. The outer end of the coil spring is connected to the outer shell. A mounting protrusion is located at the center of the other axial end of the winding wheel, and the mounting protrusion is connected to an angle sensor. One end of the tension wire rope is wound around the outside of the winding wheel, and the other end of the tension wire rope passes through the outer shell and is connected to the anchor head component.

3. The novel top plate delamination instrument as described in claim 2, characterized in that: The outer casing has a spring mounting groove on its inner side, and a central groove at the center of the inner center of the spring mounting groove. A tension post is provided on one side of the circumference of the spring mounting groove. The spring is nested in the spring mounting groove, and the outer end of the spring is connected to the tension post. One end of the clamping post extends into the central groove and can rotate within the central groove. A support plate is fixedly connected to the inner casing. The support plate is located on the side of the winding wheel away from the spring, and the support plate has support holes corresponding to the mounting protrusions. The mounting protrusions on the winding wheel pass through the support holes and are connected to the angle sensor.

4. The novel top plate delamination instrument as described in claim 3, characterized in that: An installation plate is fixedly connected to the inner side of the opening end of the inner housing. The installation plate is provided with clearance holes corresponding to the support holes. The angle sensor is fixedly connected inside the inner housing. The sensing shaft of the angle sensor extends out from the clearance hole and connects to the mounting protrusion on the winding wheel.

5. The novel top plate delamination instrument as described in claim 4, characterized in that: The mounting protrusion is provided with a transmission groove, the inner diameter of which is adapted to the outer diameter of the sensing shaft. When the inner housing is nested inside the opening of the outer housing, the sensing shaft is inserted into the transmission groove and can be rotated by the mounting protrusion to perform measurement actions.

6. The novel top plate delamination instrument as described in claim 5, characterized in that: The outer shell has a sealing protrusion at the edge of its opening, and the inner shell has an integrally formed circumferential protrusion on the edge away from the opening. The outer diameter of the circumferential protrusion is the same as the outer diameter of the outer shell. The end face of the circumferential protrusion near the outer shell has a sealing groove that matches the sealing protrusion. When the inner shell is nested inside the opening of the outer shell, the sealing protrusion is embedded in the sealing groove.

7. The novel top plate delamination instrument as described in claim 6, characterized in that: The outer shell and the inner shell are both configured with an angled structure at one corresponding end corner.

8. The novel top plate delamination instrument as described in claim 7, characterized in that: The top of the outer shell is fixedly connected to a positioning tube, and the inside of the positioning tube is connected to the coil spring mounting groove; one end of the pulling steel wire rope is wrapped around the outside of the winding wheel, and the other end of the pulling steel wire rope passes through the positioning tube and is connected to the anchor head.

9. The novel top plate delamination instrument as described in claim 8, characterized in that: The outer casing has a first connecting lug on its side wall and a take-up box is bolted to the first connecting lug; the take-up box is a cylindrical ring structure, and a second connecting lug is integrally formed on the outer circumference of the take-up box, and the second connecting lug is bolted to the first connecting lug.

10. The novel top plate delamination instrument as described in claim 9, characterized in that: The coil spring mounting groove, tension measuring component, angle sensor, tension wire rope, and anchor head are all provided in two sets to perform tension measurement operations on the two anchor head components.

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