Angle adjusting device for mining measuring instrument

Abstract

The utility model discloses an angle adjusting device for a mining measuring instrument. The angle adjusting device comprises a tripod, a mounting table is fixedly mounted on the tripod, and a fixed side plate is fixedly mounted on each of the two sides of the upper part of the mounting table; the rotating handle is rotated to drive the second rotating shaft to rotate, during normal rotation, under the action of the first spring, the second small gear is meshed with the first large gear, and the second small gear rotates to drive the first large gear to rotate; when the angle needs to be rapidly and roughly adjusted, a second rotating shaft is pushed towards one side of a first shaft sleeve while a rotating handle is rotated, and pushing force is kept; at the moment, the first small gear is meshed with the second large gear, the second large gear rotates to drive the first small gear to rotate, and when the first small gear rotates, the first small gear drives the rotating disc and the upper bearing plate to rotate rapidly through the first rotating shaft, so that the function of rapidly and roughly adjusting the angle is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring instruments, in particular to an angle adjusting device for a mining measuring instrument. Background Technique

[0002] Mine surveying work is a key link in the process of mine construction and production. Its surveying scope covers the surface working face and the underground roadway system, involving multiple aspects such as spatial positioning, geometric measurement, and safety monitoring. The accuracy of surveying data directly affects the reliability of mine exploitation design, construction control, and disaster prevention. In mine surveying operations, the mining measuring instrument is the core measuring device, and traditional surveying mainly relies on optical measuring devices such as level gauges and theodolites.

[0003] During measurement, the measuring instrument is usually placed on a bracket to maintain stability during measurement. In actual surveying and mapping, surveyors need to change different measurement points multiple times. After each change of the measurement point, it is necessary to adjust the measurement angle of the measuring instrument through the angle adjusting device installed on the bracket. Sometimes, a large - amplitude and rapid rough adjustment of the angle is required during adjustment, and sometimes a fine adjustment of the angle is needed.

[0004] The adjustment speed of the angle adjusting device of the traditional manual adjustment bracket is fixed and cannot simultaneously meet the requirements of rapid rough adjustment and fine adjustment of the angle. Therefore, an angle adjusting device for a mining measuring instrument is needed to meet people's needs. Content of the Utility Model

[0005] The purpose of the utility model is to provide an angle adjusting device for a mining measuring instrument to solve the problems put forward in the above - mentioned background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an angle adjusting device for a mining measuring instrument, including a tripod; an installation platform is fixedly installed on the tripod, a fixed side plate is fixedly installed on each of the two sides above the installation platform, a turntable is rotatably installed on each of the two fixed side plates, a dust - proof plate is fixedly installed between the two fixed side plates and the turntables, a variable - speed adjusting device is arranged between the two fixed side plates and the two turntables, an upper bearing plate is fixedly installed on the turntable, and a fixing device for fixing the measuring instrument is arranged on the upper bearing plate;

[0007] Preferably, the variable - speed adjusting device includes a first rotating shaft fixedly connected to the turntable and a second rotating shaft rotatably connected to the fixed side plate. A first small gear and a first large gear are respectively fixedly installed on the first rotating shaft, a second small gear and a second large gear are respectively fixedly installed on the second rotating shaft, and when the second rotating shaft moves, the second small gear can be engaged with the first large gear or the second large gear can be engaged with the first small gear.

[0008] Preferably, the first rotating shaft is installed between two turntables, and both ends of the first rotating shaft are fixedly connected to the turntables on both sides.

[0009] Preferably, a first shaft sleeve is fixedly installed on one side of the fixed side plate, and a second shaft sleeve is fixedly installed on the other side of the fixed side plate. One end of the second rotating shaft is rotatably installed in the first shaft sleeve, and the other end of the second rotating shaft penetrates through the second shaft sleeve and the fixed side plate where the second shaft sleeve is installed, and is rotatably installed in the second shaft sleeve and the fixed side plate. A rotating handle is fixedly installed on one side of the second rotating shaft. Shaft connecting rods are fixedly installed on both the first shaft sleeve and the second shaft sleeve, and both of the two shaft connecting rods are rotatably connected to the first rotating shaft.

[0010] Preferably, the first small gear and the second small gear have the same number of teeth, the first large gear and the second large gear have the same number of teeth, and the first small gear, the first large gear, the second small gear, and the second large gear have the same module.

[0011] Preferably, a first spring is installed in the first shaft sleeve. One end of the first spring abuts against the first shaft sleeve, and the other end abuts against one end of the second rotating shaft.

[0012] Preferably, a first limiting piece and a second limiting piece are respectively fixedly installed on the second rotating shaft. The first limiting piece is installed between the first shaft sleeve and the second large gear, and the second limiting piece is installed between the second shaft sleeve and the second small gear.

[0013] Preferably, the fixing device includes a baffle and a base plate. Both the baffle and the base plate are fixedly installed on the upper bearing plate. A second spring is fixedly installed on the base plate. A clamping plate is fixedly installed at the end of the second spring away from the base plate. Rubber pads are fixedly installed on both the baffle and one side of the clamping plate.

[0014] Preferably, a clamping groove is formed on the fixed side plate, and the turntable is rotatably installed in the clamping groove.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] (1) In the present utility model, by rotating the rotating handle to drive the second rotating shaft to rotate, when rotating normally, under the action of the first spring, the second small gear will engage with the first large gear. The second small gear rotates to drive the first large gear to rotate. At this time, the first large gear will drive the turntable and the upper bearing plate to slowly rotate through the first rotating shaft to finely adjust the angle of the upper bearing plate and the measuring instrument. When it is necessary to quickly and roughly adjust the angle, while rotating the rotating handle, push the second rotating shaft towards the first shaft sleeve side and maintain the thrust. At this time, the first small gear will engage with the second large gear. The second large gear rotates to drive the first small gear to rotate. When the first small gear rotates, it drives the turntable and the upper bearing plate to rotate quickly, so as to realize the function of quickly and roughly adjusting the angle.

[0017] (2) When in use, place the measuring instrument on the upper bearing plate. The cooperation of the second spring and the clamping plate can clamp the measuring instrument to limit it. The rubber pad can increase the friction and prevent the outer surface of the measuring instrument from being scratched. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic three-dimensional structure diagram of an angle adjustment device for a mining measuring instrument proposed by the present utility model;

[0019] Figure 2 is a schematic structural diagram of a fixing device of an angle adjustment device for a mining measuring instrument proposed by the present utility model;

[0020] Figure 3 is a schematic structural diagram of a variable-speed adjustment device of an angle adjustment device for a mining measuring instrument proposed by the present utility model, mainly showing the structure at the first shaft sleeve and the second large gear;

[0021] Figure 4 is a schematic structural diagram of a variable-speed adjustment device of an angle adjustment device for a mining measuring instrument proposed by the present utility model. In the figure, the second small gear and the first large gear are in a meshing state;

[0022] Figure 5 is a schematic cross-sectional view of a variable-speed adjustment device of an angle adjustment device for a mining measuring instrument proposed by the present utility model, mainly showing the structure at the first shaft sleeve and the first spring. In the figure, the second small gear and the first large gear are in a meshing state;

[0023] Figure 6 is a schematic cross-sectional view of a variable-speed adjustment device of an angle adjustment device for a mining measuring instrument proposed by the present utility model. In the figure, the second large gear and the first small gear are in a meshing state, and the first limiting piece is in contact with the first shaft sleeve.

[0024] In the figure: 1, measuring instrument; 2, variable-speed adjustment device; 3, fixing device; 4, tripod; 5, mounting table; 6, fixed side plate; 7, card slot; 8, dust-proof plate; 9, turntable; 10, upper bearing plate; 200, first rotating shaft; 201, first small gear; 202, first large gear; 203, first shaft sleeve; 204, first spring; 205, second shaft sleeve; 206, second rotating shaft; 207, second small gear; 208, second large gear; 209, rotating handle; 210, first limiting piece; 211, second limiting piece; 212, shaft connecting rod; 300, baffle plate; 301, base plate; 302, second spring; 303, clamping plate; 304, rubber pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment 1: Please refer to Figure 1-6 , the present invention provides a technical solution: an angle adjustment device for a mining surveying instrument, including a tripod 4 for installing the surveying instrument 1; in order to design an angle adjustment device dedicated to a mining surveying instrument that can be finely adjusted or coarsely adjusted at will, an installation platform 5 is fixedly installed on the tripod 4, and a fixed side plate 6 is fixedly installed on each of the two sides above the installation platform 5. A turntable 9 is rotatably installed on each of the two fixed side plates 6. A dust shield 8 is fixedly installed between the two fixed side plates 6 and the turntable 9. A variable speed adjustment device 2 is provided between the two fixed side plates 6 and the two turntables 9. An upper bearing plate 10 is fixedly installed on the turntable 9, and a fixing device 3 for fixing the surveying instrument 1 is provided on the upper bearing plate 10. By adjusting the speed through the variable speed adjustment device 2, a quick and convenient switch between slow fine adjustment and fast coarse adjustment can be realized. The surveying instrument 1 is fixed on the device through the fixing device 3. The dust shield 8 on the device can block the gear assembly in the variable speed adjustment device 2. When used for outdoor measurement, dust adhesion on the gears can be reduced, and the service life of the device can be extended.

[0027] To achieve the function of variable speed adjustment, the variable speed adjustment device 2 includes a first rotating shaft 200 fixedly connected to the turntable 9 and a second rotating shaft 206 rotatably connected to the fixed side plate 6. A first small gear 201 and a first large gear 202 are fixedly installed on the first rotating shaft 200 respectively. A second small gear 207 and a second large gear 208 are fixedly installed on the second rotating shaft 206 respectively. When the second rotating shaft 206 moves, the second small gear 207 can be engaged with the first large gear 202 or the second large gear 208 can be engaged with the first small gear 201. The first rotating shaft 200 is installed between the two turntables 9, and both ends of the first rotating shaft 200 are fixedly connected to the turntables 9 on both sides.

[0028] In order to limit and fix the second rotating shaft 206, a first shaft sleeve 203 is fixedly installed on one side of the fixed side plate 6, and a second shaft sleeve 205 is fixedly installed on the other side of the fixed side plate 6. One end of the second rotating shaft 206 is rotatably installed in the first shaft sleeve 203, and the other end of the second rotating shaft 206 penetrates through the second shaft sleeve 205 and the fixed side plate 6 on which the second shaft sleeve 205 is installed, and is rotatably installed in the second shaft sleeve 205 and the fixed side plate 6. A rotating handle 209 is fixedly installed on one side of the second rotating shaft 206. Shaft connecting rods 212 are fixedly installed on both the first shaft sleeve 203 and the second shaft sleeve 205, and the two shaft connecting rods 212 are both rotatably connected to the first rotating shaft 200. A first spring 204 is installed in the first shaft sleeve 203. One end of the first spring 204 abuts against the first shaft sleeve 203, and the other end abuts against one end of the second rotating shaft 206. A first limiting piece 210 and a second limiting piece 211 are fixedly installed on the second rotating shaft 206 respectively. The first limiting piece 210 is installed between the first shaft sleeve 203 and the second large gear 208, and the second limiting piece 211 is installed between the second shaft sleeve 205 and the second small gear 207. A clamping groove 7 is formed on the fixed side plate 6, and the turntable 9 is rotatably installed in the clamping groove 7.

[0029] In order to ensure that each gear can mesh, the number of teeth of the first small gear 201 and the second small gear 207 is the same, the number of teeth of the first large gear 202 and the second large gear 208 is the same, and the module of the first small gear 201, the first large gear 202, the second small gear 207 and the second large gear 208 is the same.

[0030] When coarse adjustment of the angle is required, at this time, the second rotating shaft 206 needs to be pushed towards the first shaft sleeve 203 side. While maintaining the thrust, rotate the rotating handle 209. When the second rotating shaft 206 moves towards the first shaft sleeve 203 side, the first spring 204 will be compressed until the first limiting piece 210 contacts the first shaft sleeve 203. At this time, the second large gear 208 meshes with the first small gear 201. Since the number of teeth of the first small gear 201 is much smaller than that of the second large gear 208, if the number of teeth of the second large gear 208 is twice that of the first small gear 201, when the active second large gear 208 rotates one circle, the first small gear 201 will rotate two circles. At this time, when the first small gear 201 drives the turntable 9 to rotate through the first rotating shaft 200, the rotation amplitude of the first small gear 201 is larger than that of the second large gear 208, and the rotation speed is faster than that of the second large gear 208. At this time, the rapid coarse adjustment of the angles of the upper bearing plate 10 and the measuring instrument 1 can be realized.

[0031] When it is necessary to finely adjust the angle of the upper bearing plate 10, just stop pushing the second rotating shaft 206. The first spring 204 loses pressure and will reset under the action of elastic force. When the first spring 204 resets, it will push the second rotating shaft 206 to move towards the second bushing 205 until the second limiting piece 211 contacts the second bushing 205. At this time, the second pinion 207 meshes with the first large gear 202. During normal rotation, since the number of teeth of the driving wheel second pinion 207 is less than that of the first large gear 202, the rotation amplitude of the first large gear 202 is smaller than that of the second pinion 207, and the rotation speed is slower than that of the second pinion 207. At this time, the first large gear 202 drives the turntable 9 to rotate through the first rotating shaft 200. When the turntable 9 rotates, it will drive the upper bearing plate 10 and the measuring instrument 1 fixed on the upper bearing plate 10 to rotate, so as to finely adjust the measuring angle of the measuring instrument 1.

[0032] A first limiting piece 210 and a second limiting piece 211 are fixedly installed on the second rotating shaft 206. When the first pinion 201 meshes with the second large gear 208, one side of the first limiting piece 210 just abuts against the first bushing 203. When the first large gear 202 and the second pinion 207 mesh, the second limiting piece 211 just abuts against the second bushing 205. By limiting the moving range of the second rotating shaft 206 through the first limiting piece 210 and the second limiting piece 211, it can prevent the second rotating shaft 206 from falling off and ensure that the gears can mesh normally at the same time.

[0033] It should be noted that when designing the number of teeth of the gears, the number of teeth of the first pinion 201, the second pinion 207, the first large gear 202, and the second large gear 208 may also be different. However, in order to achieve the effect of variable-speed rotation, there must be a certain multiple difference between the number of teeth of the first pinion 201 and the second large gear 208, and between the second pinion 207 and the first large gear 202, and the module of the four transmission gears is the same to ensure that the gears can mesh normally during switching. During fine adjustment, it should be ensured that the bottom tripod 4 is firmly fixed to the ground to ensure that it will not move due to the force applied to the second rotating shaft 206. If the tripod 4 is not firmly fixed to the ground, the first spring 204 can be replaced with a soft spring with a small elastic coefficient and low stiffness, and the tripod 4 can be held by hand to assist its fixation when applying a thrust to the second rotating shaft 206.

[0034] Embodiment 2: As Figure 3-6, in order to realize the function of fixing the measuring instrument 1 and the variable speed adjusting device, the fixing device 3 includes a baffle 300 and a substrate 301. Both the baffle 300 and the substrate 301 are fixedly installed on the upper bearing plate 10. A second spring 302 is fixedly installed on the substrate 301. A clamping plate 303 is fixedly installed at one end of the second spring 302 away from the substrate 301. Rubber pads 304 are fixedly installed on one side of both the baffle 300 and the clamping plate 303. During use, the tripod 4 is opened and fixed on the measuring plane. The measuring instrument 1 is placed on the upper bearing plate 10, and the measuring instrument 1 is clamped by the cooperation of the second spring 302 and the clamping plate 303 to prevent its displacement and falling off. The rubber pads 304 can increase the friction force while preventing the outer surface of the measuring instrument 1 from being scratched. The remaining features are the same as those in Embodiment 1.

[0035] The working principle is as follows: When in use, the tripod 4 is unfolded and fixed on the measurement plane. The measuring instrument 1 is placed on the upper bearing plate 10, and the second spring 302 and the clamping plate 303 cooperate to clamp the measuring instrument 1 to prevent it from shifting and falling off. When coarse adjustment of the angle is required, at this time, the second rotating shaft 206 needs to be pushed towards the first bushing 203. While maintaining the thrust, rotate the rotating handle 209. When the second rotating shaft 206 moves towards the first bushing 203, the first spring 204 will be compressed until the first limiting piece 210 contacts the first bushing 203. At this time, the second large gear 208 meshes with the first small gear 201. Since the number of teeth of the first small gear 201 is much smaller than that of the second large gear 208, if the number of teeth of the second large gear 208 is twice that of the first small gear 201, when the active second large gear 208 rotates one circle, the first small gear 201 will rotate two circles. At this time, when the first small gear 201 drives the turntable 9 to rotate through the first rotating shaft 200, the rotation amplitude of the first small gear 201 is larger than that of the second large gear 208, and the rotation speed is faster than that of the second large gear 208. At this time, the rapid coarse adjustment of the angles of the upper bearing plate 10 and the measuring instrument 1 can be realized. When fine adjustment of the angle of the upper bearing plate 10 is required, just stop pushing the second rotating shaft 206. The first spring 204 loses pressure and will reset under the action of the elastic force. When the first spring 204 resets, it will push the second rotating shaft 206 to move towards the second bushing 205 until the second limiting piece 211 contacts the second bushing 205. At this time, the second small gear 207 meshes with the first large gear 202. During normal rotation, since the number of teeth of the driving second small gear 207 is less than that of the first large gear 202, the rotation amplitude of the first large gear 202 is smaller than that of the second small gear 207, and the rotation speed is slower than that of the second small gear 207. At this time, the first large gear 202 drives the turntable 9 to rotate through the first rotating shaft 200. When the turntable 9 rotates, it will drive the upper bearing plate 10 and the measuring instrument 1 fixed on the upper bearing plate 10 to rotate, so as to finely adjust the measuring angle of the measuring instrument 1. The first limiting piece 210 and the second limiting piece 211 are fixedly installed on the second rotating shaft 206. When the first small gear 201 meshes with the second large gear 208, one side of the first limiting piece 210 just abuts against the first bushing 203. When the first large gear 202 and the second small gear 207 mesh, the second limiting piece 211 just abuts against the second bushing 205. By limiting the moving range of the second rotating shaft 206 through the first limiting piece 210 and the second limiting piece 211, it can prevent the second rotating shaft 206 from falling off and ensure that the gears can mesh normally. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An angle adjustment device for a mining surveying instrument, comprising a tripod (4); characterized in that: A mounting platform (5) is fixed on the tripod (4), a fixed side plate (6) is fixed on both sides of the mounting platform (5), a turntable (9) is rotatably mounted on each of the two fixed side plates (6), a dust shield (8) is fixed between the two fixed side plates (6) and the turntable (9), a speed adjustment device (2) is provided between the two fixed side plates (6) and the two turntables (9), an upper bearing plate (10) is fixed on the turntable (9), and a fixing device (3) for fixing the measuring instrument (1) is provided on the upper bearing plate (10); The speed adjustment device (2) comprises a first rotating shaft (200) fixed to the rotating disk (9) and a second rotating shaft (206) rotatably connected to the fixed side plate (6); a first pinion (201) and a first large gear (202) are fixed to the first rotating shaft (200); a second pinion (207) and a second large gear (208) are fixed to the second rotating shaft (206); when the second rotating shaft (206) moves, the second pinion (207) can mesh with the first large gear (202) or the second large gear (208) can mesh with the first pinion (201); A first shaft sleeve (203) is fixed on one side of the fixed side plate (6), a second shaft sleeve (205) is fixed on the other side of the fixed side plate (6), and a second rotating shaft (206) is rotatably mounted in the first shaft sleeve (203) and the second shaft sleeve (205); A first spring (204) is installed in the first shaft sleeve (203); one end of the first spring (204) abuts against the first shaft sleeve (203), and the other end of the first spring (204) abuts against one end of the second rotating shaft (206).

2. The angle adjustment device for a mining surveying instrument according to claim 1, characterized in that: The first rotating shaft (200) is installed between the two rotating disks (9), and the two ends of the first rotating shaft (200) are respectively fixedly connected to the rotating disks (9) on both sides.

3. The angle adjustment device for a mining surveying instrument according to claim 2, characterized in that: One end of the second rotating shaft (206) is rotatably mounted in the first shaft sleeve (203); the other end of the second rotating shaft (206) passes through the second shaft sleeve (205) and the fixed side plate (6) on which the second shaft sleeve (205) is mounted, and is rotatably mounted in the second shaft sleeve (205) and the fixed side plate (6); a rotating handle (209) is fixedly mounted on one side of the second rotating shaft (206); shaft connecting rods (212) are fixedly mounted on both the first shaft sleeve (203) and the second shaft sleeve (205); and the two shaft connecting rods (212) are rotatably connected to the first rotating shaft (200).

4. The angle adjustment device for a mining surveying instrument according to claim 3, characterized in that: The first small gear (201) and the second small gear (207) have the same number of teeth, the first large gear (202) and the second large gear (208) have the same number of teeth, and the first small gear (201), the first large gear (202), the second small gear (207) and the second large gear (208) all have the same module.

5. The angle adjustment device for a mining surveying instrument according to claim 4, characterized in that: A first limiting plate (210) and a second limiting plate (211) are respectively fixedly mounted on the second rotating shaft (206); the first limiting plate (210) is mounted between the first shaft sleeve (203) and the second large gear (208); and the second limiting plate (211) is mounted between the second shaft sleeve (205) and the second small gear (207).

6. The angle adjustment device for a mining surveying instrument according to claim 1, characterized in that: The fixing device (3) comprises a baffle (300) and a base plate (301), wherein the baffle (300) and the base plate (301) are both fixedly mounted on the upper bearing plate (10), a second spring (302) is fixedly mounted on the base plate (301), a clamping plate (303) is fixedly mounted on one end of the second spring (302) away from the base plate (301), and a rubber pad (304) is fixedly mounted on one side surface of the baffle (300) and the clamping plate (303).

7. The angle adjustment device for a mining surveying instrument according to claim 1, characterized in that: The fixed side plate (6) is provided with a slot (7), and the rotating disk (9) is rotatably mounted in the slot (7).

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