Mining face footage measuring device

Abstract

The utility model discloses an excavation face footage measuring device, which belongs to the field of energy exploitation, and comprises a working table and two support columns, the two support columns are fixedly connected to the bottom surface of the working table, the bottom surface of the working table is fixedly connected with a mounting frame, a footage measuring mechanism is arranged in the mounting frame, and the footage measuring mechanism is fixedly connected with the working table. The footage measuring mechanism comprises a motor fixedly connected to the bottom face of the mounting frame and a lead screw rotationally connected to the bottom face of the inner wall of the mounting frame, the bottom of the lead screw penetrates through the bottom face of the inner wall of the mounting frame and is in transmission connection with the output end of the motor, and the outer portion of the lead screw is in threaded connection with an outer sleeve rod. The outer sleeve rod is slidably connected to the interior of the through hole, two mounting seats are fixedly connected to the interior of the through hole, measuring rollers are rotatably arranged on the sides, close to the outer sleeve rod, of the two mounting seats, and the functions of improving the measuring efficiency during footage measurement and improving the accuracy of measured data can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of energy extraction, and more specifically, to a measuring device for the advance of an excavation face. Background Art

[0002] During the excavation process of a coal mine roadway, it is necessary to regularly measure the excavation depth of the excavation face to prevent the rock layer structure of the roadway from being damaged due to excessive excavation depth.

[0003] Most of the existing excavation methods are carried out manually. Workers need to hold a measuring instrument or a tape measure to measure the advance of the excavation face. However, when measuring the advance of the excavation face above the inner wall of the roadway, workers need the assistance of an external lifting device to enter the excavation face for measurement. The terrain at the new excavation face above is complex, which not only brings difficulties to the measurement operation of workers, but also results in low accuracy of the measured data, thus greatly reducing the efficiency of the advance measurement.

[0004] Therefore, a measuring device for the advance of an excavation face is proposed for the above problems. Content of the Utility Model

[0005] 1. Technical Problems to be Solved

[0006] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a measuring device for the advance of an excavation face, which can realize the functions of improving the measurement efficiency during the advance measurement and improving the accuracy of the measurement data.

[0007] 2. Technical Solutions

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A measuring device for the advance of an excavation face includes a workbench and two support columns. The two support columns are fixedly connected to the bottom surface of the workbench. An installation frame is fixedly connected to the bottom surface of the workbench. An advance measurement mechanism is arranged inside the installation frame. The advance measurement mechanism includes a motor fixedly connected to the bottom surface of the installation frame and a lead screw rotatably connected to the bottom surface of the inner wall of the installation frame. The bottom of the lead screw penetrates through the bottom surface of the inner wall of the installation frame and is in transmission connection with the output end of the motor. An outer sleeve rod is threadedly connected to the outside of the lead screw. A through hole is formed through the top surface of the workbench. The outer sleeve rod is slidably connected inside the through hole. Two mounting seats are fixedly connected inside the through hole. Measuring rollers are rotatably arranged on one side of the two mounting seats close to the outer sleeve rod. Rotation sensors are arranged on both sides of the measuring rollers.

[0010] Further, a rotating shaft is fixedly connected through the inside of the measuring roller. Both ends of the rotating shaft are rotatably connected through the two sides of the inner wall of the mounting seat. The measuring roller is rotationally connected to the mounting seat through the rotating shaft arranged thereon. The two rotating sensors are respectively fixedly connected to both sides of the rotating shaft.

[0011] Further, two sliding grooves are symmetrically formed on the outer part of the outer sleeve rod. The two measuring rollers are respectively arranged inside the two sliding grooves.

[0012] Further, a number of meshing teeth are fixedly connected inside the two sliding grooves. A number of meshing grooves are formed on the outer edge of the measuring roller. The number of the meshing grooves is meshed with the number of the meshing teeth.

[0013] Further, a top plate is fixedly connected to the top of the outer sleeve rod. The diameter of the outer sleeve rod is smaller than the diameter of the through hole. The diameter of the top plate is adapted to the through hole.

[0014] Further, two mounting plates are fixedly connected to the bottom surface of the workbench. The two mounting plates are symmetrically arranged on the bottom surface of the workbench. An anti-offset mechanism is arranged on one side of the mounting plate.

[0015] Further, the anti-offset mechanism includes a threaded rod penetrating and threadedly connected inside the mounting plate. One end of the threaded rod away from the outer sleeve rod is fixedly connected with a rotating handle. One end of the threaded rod close to the outer sleeve rod is rotatably connected with a limiting clip. The overall diameter of the two limiting clips is adapted to the diameter of the outer sleeve rod.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the advantages of the present utility model are as follows:

[0018] (1) In this solution, by setting the feed measurement mechanism, the motor is used to drive the lead screw to rotate, so that the outer sleeve rod rises. During this process, the meshing teeth and the meshing grooves are used to make the measuring roller rotate. The rotation sensor measures the number of rotation turns of the measuring roller and multiplies it by the circumference of the measuring roller to obtain the specific feed data. Compared with the traditional measurement method, this device can reduce the measurement burden of the staff, is easy to operate, improves the measurement efficiency, and the measured data is highly accurate.

[0019] (2) In this solution, by setting the meshing grooves and the meshing teeth, the friction force between the outer sleeve rod and the measuring roller can be indirectly increased, effectively preventing the situation that the measuring roller does not rotate due to the small friction force between the measuring roller and the outer sleeve rod when the outer sleeve rod rises. At the same time, the anti-offset mechanism is set, and the lifting angle of the outer sleeve rod is limited by the limiting clip, effectively preventing the phenomenon that the outer sleeve rod is offset when it rises due to contact with the crushed stones, and further improving the accuracy of the data measured by the device. Description of the drawings

[0020] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0021] Figure 2 is a front sectional structural schematic diagram of the present utility model;

[0022] Figure 3 is a sectional schematic diagram of part of the structure in the present utility model;

[0023] Figure 4 is a disassembled schematic diagram of part of the structure in the present utility model;

[0024] Figure 5 is a three-dimensional structural schematic diagram of part of the structure in the present utility model.

[0025] Description of the reference numerals in the figure:

[0026] 1. Workbench; 11. Through hole; 12. Mounting seat; 2. Support column; 3. Mounting frame; 4. Feed measurement mechanism; 41. Motor; 42. Lead screw; 43. Outer sleeve rod; 431. Chute; 44. Meshing teeth; 45. Measuring roller; 451. Meshing groove; 46. Rotation sensor; 47. Rotating shaft; 5. Top plate; 6. Mounting plate; 7. Anti-offset mechanism; 71. Rotating handle; 72. Threaded rod; 73. Limiting clip. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] Embodiment:

[0031] Please refer to Figure 1 - Figure 5 , a measurement device for the advance of an excavation face, comprising a workbench 1 and two support columns 2. The two support columns 2 are fixedly connected to the bottom surface of the workbench 1. An installation frame 3 is fixedly connected to the bottom surface of the workbench 1. A feed measurement mechanism 4 is arranged inside the installation frame 3. The feed measurement mechanism 4 includes a motor 41 fixedly connected to the bottom surface of the installation frame 3 and a lead screw 42 rotatably connected to the bottom surface of the inner wall of the installation frame 3. The bottom of the lead screw 42 penetrates through the bottom surface of the inner wall of the installation frame 3 and is in transmission connection with the output end of the motor 41. An outer sleeve rod 43 is threadedly connected to the outside of the lead screw 42. A through hole 11 is formed through the top surface of the workbench 1. The outer sleeve rod 43 is slidably connected inside the through hole 11. Two mounting seats 12 are fixedly connected inside the through hole 11. Measuring rollers 45 are rotatably arranged on one side of the two mounting seats 12 close to the outer sleeve rod 43. Rotation sensors 46 are arranged on both sides of the measuring rollers 45.

[0032] In this solution, a controller is installed on one side of the workbench 1, and a display screen is installed on the controller. The motor 41 and the rotation sensors 46 are both electrically connected to the controller. Before use, the staff places the whole device at the excavation face to be measured through the support columns 2 and aligns the top of the outer sleeve rod 43 with the excavation face. The feed measurement mechanism 4 is used to measure the feed amount of the excavation face. Among them, the motor 41 is used to drive the lead screw 42 to rotate, so that the outer sleeve rod 43 slides upward along the through hole 11. During the sliding process, a relative displacement occurs between the outer sleeve rod 43 and the measuring rollers 45, and the measuring rollers 45 are rotated by using the frictional force. The rotation sensors 46 will detect the number of rotation turns of the measuring rollers 45. By multiplying the number of rotation turns by the circumference of the measuring rollers 45, the feed data can be obtained, and the obtained data will be displayed on the display screen of the controller, which is convenient for the staff to record. Compared with the traditional measurement method where the staff holds a measuring instrument, this device has the advantages of simple measurement operation and accurate measured data.

[0033] Please refer to Figure 1 - Figure 5, a rotating shaft 47 is fixedly connected through the interior of the measuring roller 45. Both ends of the rotating shaft 47 are rotatably connected through both sides of the inner wall of the mounting seat 12. The measuring roller 45 is rotationally connected to the mounting seat 12 through the rotating shaft 47 provided thereon. Two rotation sensors 46 are respectively fixedly connected to both sides of the rotating shaft 47.

[0034] Specifically, two sliding grooves 431 are symmetrically formed on the exterior of the outer sleeve rod 43. Two measuring rollers 45 are respectively arranged inside the two sliding grooves 431.

[0035] Specifically, a number of meshing teeth 44 are fixedly connected inside the two sliding grooves 431. A number of meshing grooves 451 are formed on the outer edge of the measuring roller 45. The number of meshing grooves 451 meshes with the number of meshing teeth 44.

[0036] In this solution, the rotating shaft 47 is arranged at the measuring end of the rotation sensor 46. Through the rotation of the rotating shaft 47, the rotation sensor 46 can measure the specific number of turns of the rotation of the measuring roller 45. Through the meshing cooperation between the meshing teeth 44 and the meshing grooves 451, the frictional force between the outer sleeve rod 43 and the measuring roller 45 is indirectly increased, effectively preventing the situation where the measuring roller 45 does not rotate due to the small frictional force when the outer sleeve rod 43 rises, and further improving the measurement accuracy of the device.

[0037] Please refer to Figure 1 , Figure 2 Figure 3 and Figure 5 , a top plate 5 is fixedly connected to the top of the outer sleeve rod 43. The diameter of the outer sleeve rod 43 is smaller than the diameter of the through hole 11. The diameter of the top plate 5 is adapted to the through hole 11. In this solution, the top plate 5 plays a role in protecting the components below the through hole 11. During the rising process of the outer sleeve rod 43, there may be a phenomenon of soil and gravel falling in the upper mining face. The top plate 5 can effectively block the soil and gravel, thereby protecting the footage measuring mechanism 4.

[0038] Please refer to Figure 5 , two mounting plates 6 are fixedly connected to the bottom surface of the workbench 1. The two mounting plates 6 are symmetrically arranged on the bottom surface of the workbench 1. An anti-offset mechanism 7 is arranged on one side of the mounting plate 6.

[0039] Specifically, the anti-offset mechanism 7 includes a threaded rod 72 that is threadedly connected through the interior of the mounting plate 6. One end of the threaded rod 72 away from the outer sleeve rod 43 is fixedly connected with a rotating handle 71. One end of the threaded rod 72 close to the outer sleeve rod 43 is rotatably connected with a limiting clip 73. The overall diameter of the two limiting clips 73 is adapted to the diameter of the outer sleeve rod 43.

[0040] In this solution, before measurement, the staff can rotate the rotating handle 71 to rotate the threaded rod 72, thereby driving the limit clip 73 to approach the outer sleeve rod 43 and maintaining a small distance. The overall shape of the two limit clips 73 is annular. Through the two anti-offset mechanisms 7, it can effectively prevent the outer sleeve rod 43 from shifting due to touching the crushed stones in the excavation face during the upward movement of the outer sleeve rod 43, playing a role in limiting and protecting the outer sleeve rod 43.

[0041] Working principle: Before measuring the footage of the excavation face, the staff first place the whole device at the excavation face to be measured through the support column 2, and align the top of the outer sleeve rod 43 with the excavation face. Then rotate the rotating handle 71 to rotate the threaded rod 72, thereby driving the limit clip 73 to approach the outer sleeve rod 43 and maintaining a small distance, so that the two limit clips 73 limit the outer sleeve rod 43. After that, the staff starts the motor 41 to rotate the lead screw 42, so that the outer sleeve rod 43 slides upward in the through hole 11. During the sliding process, the meshing between the meshing teeth 44 in the sliding groove 431 and the meshing groove 451 on the surface of the measuring roller 45 causes the measuring roller 45 to rotate. The number of rotations of the measuring roller 45 is measured by the rotation sensor 46 through the rotating shaft 47. The specific footage data of the excavation face is obtained by multiplying the measured number of rotations by the circumference of the measuring roller 45. The data will be presented on the display screen of the controller on the workbench 1, and the staff can record the footage data.

[0042] The above is only the preferred specific implementation mode of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A mining face footage measuring device, comprising a workbench (1) and two support columns (2), wherein the two support columns (2) are fixedly connected to the bottom surface of the workbench (1), characterized in that: The bottom surface of the workbench (1) is fixedly connected to a mounting frame (3), and a footage measuring mechanism (4) is arranged inside the mounting frame (3). The footage measuring mechanism (4) comprises a motor (41) fixedly connected to the bottom surface of the mounting frame (3) and a screw rod (42) rotatably connected to the bottom surface of the inner wall of the mounting frame (3). The bottom of the screw rod (42) passes through the bottom surface of the inner wall of the mounting frame (3) and is transmission-connected to the output end of the motor (41). The outer surface of the screw rod (42) is threadedly connected to an outer sleeve rod (43). A through hole (11) is formed through the top surface of the workbench (1), and the outer sleeve rod (43) is slidably connected to the inside of the through hole (11). Two mounting seats (12) are fixedly connected inside the through hole (11), and a measuring roller (45) is rotatably arranged on one side of the two mounting seats (12) close to the outer sleeve rod (43), and a rotation sensor (46) is arranged on both sides of the measuring roller (45).

2. The mining face footage measuring device according to claim 1, characterized in that: A rotating shaft (47) is fixedly connected to the interior of the measuring roller (45), and both ends of the rotating shaft (47) are rotatably connected to the inner wall of the mounting seat (12). The measuring roller (45) is rotatably connected to the mounting seat (12) via the rotating shaft (47) disposed thereon, and the two rotation sensors (46) are respectively fixedly connected to the two sides of the rotating shaft (47).

3. The mining face footage measuring device according to claim 2, characterized in that: Two sliding grooves (431) are symmetrically provided on the outside of the outer sleeve rod (43), and the two measuring rollers (45) are respectively arranged inside the two sliding grooves (431).

4. The mining face footage measuring device according to claim 3, characterized in that: A plurality of meshing teeth (44) are fixedly connected inside the two slide grooves (431), and a plurality of meshing grooves (451) are formed on the outer edge of the measuring roller (45), and the plurality of meshing grooves (451) mesh with the plurality of meshing teeth (44).

5. The mining face footage measuring device according to claim 1, characterized in that: A top plate (5) is fixedly connected to the top of the outer sleeve rod (43); the diameter of the outer sleeve rod (43) is smaller than the diameter of the through hole (11); and the diameter of the top plate (5) is compatible with the through hole (11).

6. The mining face footage measuring device according to claim 1, characterized in that: Two mounting plates (6) are fixedly connected to the bottom surface of the workbench (1); the two mounting plates (6) are symmetrically arranged on the bottom surface of the workbench (1); and an anti-deviating mechanism (7) is arranged on one side of the mounting plates (6).

7. The mining face footage measuring device according to claim 6, characterized in that: The anti-deviating mechanism (7) comprises a threaded rod (72) threadedly connected to the inside of the mounting plate (6); one end of the threaded rod (72) away from the outer rod (43) is fixedly connected to a rotating handle (71); one end of the threaded rod (72) close to the outer rod (43) is rotatably connected to a limiting clip (73); the overall diameter of the two limiting clips (73) is adapted to the diameter of the outer rod (43).

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