Optical distance measuring device for land survey

Abstract

The utility model discloses an optical distance measuring device for land survey. The optical distance measuring device comprises a supporting mechanism, a mounting mechanism, an optical distance measuring instrument and a reflecting mechanism, the two groups of supporting mechanisms are respectively fixed at two ends of a to-be-tested land; the mounting mechanism is fixed to the top of one supporting mechanism, the optical range finder is mounted on the supporting mechanism provided with the mounting mechanism, and the reflection mechanism is mounted on the supporting mechanism without the mounting mechanism; the supporting mechanism comprises a disc, supporting legs, a supporting column, a guide column, a two-way threaded rod and a clamping disc. The multiple supporting legs are evenly and rotationally connected to the disc. The guide column is fixed to the bottom of the disc and is hollow, and a guide groove is formed in the side wall of the guide column. The height of the supporting mechanism is adjusted by moving the supporting column, and the height of the optical range finder is further adjusted. The optical range finder can prevent external light from irradiating on the reflecting plate, so that the light received by the receiver of the optical range finder is disordered, and the measurement accuracy is not influenced.

Description

Technical Field

[0001] This utility model belongs to the field of land surveying technology, and specifically relates to an optical distance measuring device for land surveying. Background Technology

[0002] Land surveying is an important part of land management, including cadastral surveying, topographic surveying, land use status surveying, land flatness surveying, and investigation of reserve land resources such as barren hills and wastelands. It requires high precision. However, in the use of traditional optical ranging devices, the beam of light is usually illuminating an object on the land to be measured, without a clear, single reference object. This can easily lead to unstable beam illumination, resulting in inaccurate beam signals after reflection. This makes it impossible to perform accurate data processing and analysis, leading to deviations in the measurement data.

[0003] A search revealed a portable land surveying instrument with existing technology announcement number CN221898486U, comprising a surveying base; a surveying instrument body mounted on the surveying base; the surveying instrument body rotating under a driving force; and further comprising a connecting component and a storage component mounted below the surveying base. However, this instrument's processing method has the following drawbacks: the surveying instrument's beam illuminates the land to be measured, lacking a clear, single reference object, which easily leads to instability in the beam's illumination, resulting in inaccurate reflected beam signals. This makes accurate data processing and analysis impossible, causing deviations in the measurement data.

[0004] A search revealed a land surveying instrument with multi-directional angle adjustment, disclosed in technical announcement number CN219692723U. This instrument includes a support assembly comprising a bracket, a first connecting rod, a second connecting rod, and a second connecting plate. The first connecting rod is fixedly connected to one side of the top of the bracket, and the second connecting rod is fixedly connected to one side of the middle of the bracket. The second connecting rod is fixedly connected to one side of the second connecting plate. A support rod is mounted on the second connecting rod, and the first connecting plate is mounted on the top of the output end of the support rod. An adjustment assembly is mounted on the top of the first connecting plate. The adjustment assembly includes a support frame, a mounting rod, a rotating shaft, and a hollow rotating platform. The mounting rod is fixedly connected above the hollow rotating platform, and the rotating shaft is mounted on the mounting rod, rotatably connecting the support frame. However, this design has the following drawbacks: the support frame cannot be adjusted; if the ground is uneven during the fixing process, the support frame may tilt, affecting the accuracy of the surveying instrument's measurement results. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an optical distance measuring device for land surveying. The support column can be moved to adjust the height of the support mechanism, thereby further adjusting the height of the optical distance measuring instrument. When the external light is too strong, a shielding cloth can be covered on the shielding frame to prevent the external light from shining on the reflector, thus making the light received by the receiver of the optical distance measuring instrument messy and further affecting the accuracy of the measurement.

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

[0007] An optical ranging device for land surveying includes a support mechanism, an installation mechanism, an optical rangefinder, and a reflection mechanism. The support mechanism consists of two sets, fixed to both ends of the land to be measured. The installation mechanism is fixed to the top of one set of support mechanisms. The optical rangefinder is installed on the support mechanism with the installation mechanism, and the reflection mechanism is installed on the support mechanism without the installation mechanism. First, the device is fixed to the ground using the support mechanism. Then, the optical rangefinder and reflection mechanism are installed and fixed using the installation mechanism. Finally, light is emitted by the transmitter in the optical rangefinder, and the light shines onto the reflection mechanism, which reflects the light back. The optical rangefinder receives and analyzes the reflected light to obtain the required measurement value.

[0008] The support mechanism includes a disc, support legs, support columns, guide columns, a bidirectional threaded rod, a locking disc, a limiting ring, and a guide rod. Several support legs are evenly rotatably connected to the disc. The guide columns are fixed to the bottom of the disc, with a hollow interior and guide grooves on their side walls. The bidirectional threaded rod is rotatably connected to the inside of the support columns, with a handwheel in the middle. The locking disc is connected to the guide columns and passes through the guide grooves, connecting to the bidirectional threaded rod via threads. The locking disc has locking grooves on its side walls, corresponding to the support legs. The limiting ring is located outside the locking disc and is fixed with bolts. The support columns are threaded to the bidirectional threaded rod. A guide rod is provided at the top of the support column, symmetrical to the locking disc, and passes through the guide column and the locking disc. First, the double-threaded rod is rotated by handwheel. The double-threaded rod drives the locking disc and the support column to move in the opposite direction along the guide groove through the thread, so that the bottom end of the support column is inserted into the ground. The movement of the support column adjusts the height of the support mechanism, and further adjusts the height of the optical rangefinder, so that the optical rangefinder corresponds with the reflection mechanism. At the same time, the locking disc moves, and then the support leg is connected in the locking groove and fixed to the ground, which can prevent the support leg from rotating during the fixing process, thus affecting the height of the optical rangefinder.

[0009] The support leg includes a sleeve, a telescopic rod, a rotating plate, and a stub. One end of the sleeve is rotatably connected to a disc, the telescopic rod is connected to the other end of the sleeve and fixed with bolts, the rotating plate is rotatably connected to the rotating plate via a rotating shaft, and the stub is threaded onto the rotating plate. The telescopic rod can move along the sleeve to adjust the length of the support leg, and the stub and rotating plate can fix it on uneven ground. This keeps the optical rangefinder level and improves the accuracy of the measurement values.

[0010] The mounting mechanism includes a mounting plate; the mounting plate is mounted on a disc of the support mechanism, and the mounting plate has a mounting groove. The optical rangefinder is installed inside the mounting groove and fixed with bolts; this allows for quick installation of the optical rangefinder and prevents it from shifting or slipping; the mounting plate has a shielding plate located between the receiver and transmitter of the optical rangefinder to prevent interference between the emitted and received light rays.

[0011] The reflection mechanism includes a base plate, a reflector, a shielding frame, and a shielding cloth. The base plate is fixed on the disc of the support mechanism, the reflector is fixed on the base plate, the shielding frame is fixed on the top and sides of the reflector, and the shielding cloth is connected to one end of the shielding frame. When the external light is too strong, the shielding cloth is covered on the shielding frame to prevent external light from shining on the reflector, thus making the light received by the receiver of the optical rangefinder messy and further affecting the accuracy of the measurement.

[0012] An adjustment mechanism is provided between the installation mechanism and the support mechanism. The adjustment mechanism includes a rotating shaft, a worm gear, a worm, and a support plate. The rotating shaft is fixed to the bottom of the installation plate and rotatably connected to a disc via a bearing. The worm gear is connected to the outer wall of the rotating shaft. The support plate is fixed to the disc, and the worm is rotatably connected to the support plate via a bearing. The worm and the worm gear are meshed together. A handle is provided at one end of the worm. By rotating the worm with the handle, the worm drives the worm gear to rotate, which in turn drives the rotating shaft to rotate. The rotating shaft, through the installation plate, drives the optical rangefinder to rotate, thereby measuring the land in different directions.

[0013] The advantages of this utility model compared with the prior art are as follows:

[0014] 1) First, rotate the double-threaded rod. The double-threaded rod drives the locking plate and the support column to move in the opposite direction along the guide groove through the thread. The support column moves to adjust the height of the support mechanism, and further adjusts the height of the optical rangefinder so that the optical rangefinder corresponds to the reflection mechanism. At the same time, the locking plate moves and then connects the support leg in the locking groove and fixes it to the ground. This can prevent the support leg from rotating during the fixing process, which would affect the height of the optical rangefinder.

[0015] 2) By setting a reflector at the point to be measured, the light shining on the reflector and the light reflected by the reflector are stable and clear, so that the optical rangefinder can perform accurate data processing and analysis; when the external light is too strong, covering the shielding frame with a shielding cloth can prevent the external light from shining on the reflector, so that the light received by the receiver of the optical rangefinder is messy and further affects the accuracy of the measurement.

[0016] 3) The telescopic rod can move along the sleeve to adjust the length of the support leg, and can be fixed on uneven ground by means of the insert pin and rotating plate; thus keeping the optical rangefinder horizontal and improving the accuracy of the measurement values. Attached Figure Description

[0017] Appendix Figure 1 This is a schematic diagram of the installation structure of the optical rangefinder in an optical rangefinder device for land surveying according to this utility model;

[0018] Appendix Figure 2 This is a schematic diagram of the reflection mechanism in an optical ranging device for land surveying according to this utility model;

[0019] Appendix Figure 3 This is a schematic diagram of the adjustment mechanism in an optical distance measuring device for land surveying according to this utility model;

[0020] Appendix Figure 4 This is a schematic diagram of the support mechanism in an optical ranging device for land surveying according to this utility model;

[0021] Appendix Figure 5 This is a schematic diagram of the structure of an optical distance measuring device for land surveying according to the present invention in its usage state;

[0022] In the diagram: 1. Support mechanism; 101. Disc; 102. Support leg; 1021. Sleeve; 1022. Telescopic rod; 1023. Rotating plate; 1024. Insert pin; 103. Support column; 104. Guide column; 1041. Guide groove; 105. Bidirectional threaded rod; 106. Engaging disc; 1061. Engaging groove; 107. Limiting ring; 108. Guide rod; 2. Installation mechanism; 201. Mounting plate; 2011. Mounting groove; 202. Baffle plate; 3. Adjustment mechanism; 301. Rotating shaft; 302. Worm gear; 303. Worm; 305. Support plate; 4. Optical rangefinder; 5. Reflection mechanism; 501. Base plate; 502. Reflector; 503. Baffle frame; 504. Baffle cloth. Detailed Implementation

[0023] To facilitate understanding by those skilled in the art, the following is a detailed explanation in conjunction with the appendix. Figure 1-5 The technical solution of this utility model will be further described in detail below.

[0024] An optical distance measuring device for land surveying includes a support mechanism 1, an installation mechanism 2, an optical distance measuring instrument 4, and a reflection mechanism 5. The support mechanism 1 has two sets, fixed to both ends of the land to be measured. The installation mechanism 2 is fixed to the top of one set of support mechanisms 1. The optical distance measuring instrument 4 is installed on the support mechanism 1 with the installation mechanism 2, and the reflection mechanism 5 is installed on the support mechanism 1 without the installation mechanism 2. The optical distance measuring instrument is a TW200LC model, purchased from the market or custom-made. First, the device is fixed to the ground using the support mechanism 1. Then, the optical distance measuring instrument 4 and the reflection mechanism 5 are installed and fixed using the installation mechanism 2. Finally, light is emitted through the transmitter in the optical distance measuring instrument 4, and the light shines onto the reflection mechanism 5, which reflects the light back. The optical distance measuring instrument 4 receives and analyzes the reflected light to obtain the required measurement value.

[0025] The support mechanism 1 includes a disc 101, support legs 102, support columns 103, guide columns 104, bidirectional threaded rods 105, locking discs 106, limiting rings 107, and guide rods 108. Several support legs 102 are evenly rotatably connected to the disc 101. The guide columns 104 are fixed to the bottom of the disc 101, and are hollow inside with guide grooves 1041 on their side walls. The bidirectional threaded rods 105 are rotatably connected inside the support columns 103, and have a handwheel in the middle. The locking discs 106 are connected to the guide columns 104 and pass through the guide grooves 1041, connecting to the bidirectional threaded rods 105 via threads. The locking discs 106 have locking grooves 1061 on their side walls, corresponding to the support legs 102. The limiting rings 107 are located outside the locking discs 106 and are secured by bolts. The support column 103 is threadedly connected to the bidirectional threaded rod 105 and is symmetrical with the locking disc 106. The top of the support column 103 is provided with a guide rod 108, which passes through the guide column 104 and the locking disc 106. First, the bidirectional threaded rod 105 is rotated by handwheel. The bidirectional threaded rod 105 drives the locking disc 106 and the support column 103 to move in the opposite direction along the guide groove 1041 through the thread. This causes the bottom end of the support column 103 to be inserted into the ground. The movement of the support column 103 adjusts the height of the support mechanism 1, and further adjusts the height of the optical rangefinder 4 so that the optical rangefinder 4 corresponds with the reflection mechanism 5. At the same time, the locking disc 106 moves, and then the support leg 102 is connected in the locking groove and fixed to the ground. This prevents the support leg 102 from rotating during the fixing process, which would affect the height of the optical rangefinder.

[0026] The support leg 102 includes a sleeve 1021, a telescopic rod 1022, a rotating plate 1023, and a pin 1024. One end of the sleeve 1021 is rotatably connected to the disc 101, the telescopic rod 1022 is connected to the other end of the sleeve 1021 and fixed with bolts, the rotating plate 1023 is rotatably connected to the rotating plate 1023 via a rotating shaft, and the pin 1024 is threadedly connected to the rotating plate 1023. The telescopic rod 1022 can move along the sleeve 1021 to adjust the length of the support leg 102, and the pin 1024 and the rotating plate 1023 can be fixed on uneven ground, thereby keeping the optical rangefinder 4 horizontal and improving the accuracy of the measurement values.

[0027] The mounting mechanism 2 includes a mounting plate 201; the mounting plate 201 is mounted on the disc 101 of the support mechanism 1, and the mounting plate 201 is provided with a mounting groove 2011. The optical rangefinder 4 is installed inside the mounting groove 2011 and fixed by bolts; this allows for quick installation of the optical rangefinder 4 and prevents the optical rangefinder 4 from shifting or slipping. The mounting plate 201 is provided with a shielding plate 202, which is located between the receiver and transmitter of the optical rangefinder 4; this prevents interference between the emitted light and the received light.

[0028] The reflecting mechanism 5 includes a base plate 501, a reflector 502, a shielding frame 503, and a shielding cloth 504. The base plate 501 is fixed on the disc of the support mechanism 1, the reflector 502 is fixed on the base plate 501, the shielding frame 503 is fixed on the top and both sides of the reflector 502, and the shielding cloth 504 is connected to one end of the shielding frame 503. When the external light is too strong, the shielding cloth 504 is covered on the shielding frame 503 to prevent external light from shining on the reflector 502, thereby making the light received by the receiver of the optical rangefinder 4 messy and further affecting the accuracy of the measurement.

[0029] An adjustment mechanism 3 is provided between the installation mechanism 2 and the support mechanism 1. The adjustment mechanism 3 includes a rotating shaft 301, a worm gear 302, a worm 303, and a support plate 305. The rotating shaft 301 is fixed to the bottom of the installation plate 201 and is rotatably connected to the disc 101 via a bearing. The worm gear 302 is connected to the outer wall of the rotating shaft 301. The support plate 305 is fixed to the disc 101, and the worm 303 is rotatably connected to the support plate 305 via a bearing. The worm 303 is meshed with the worm gear 302. A handle is provided at one end of the worm 303. By rotating the worm 303 through the handle, the worm 303 drives the worm gear 302 to rotate, and the worm gear 302 drives the rotating shaft 301 to rotate. The rotating shaft 301 drives the optical rangefinder 4 to rotate through the installation plate 201, thereby measuring the land in different directions.

[0030] An optical rangefinder for land surveying operates as follows: First, the device is fixed to the ground by a support mechanism 1. Then, the optical rangefinder 4 and the reflection mechanism 5 are installed and fixed by an installation mechanism 2. Finally, light is emitted by the transmitter in the optical rangefinder 4. The light shines on the reflection mechanism 5 and is reflected back by the reflection mechanism 5. The optical rangefinder 4 receives and analyzes the reflected light to obtain the required measurement value.

[0031] In summary, the electronic or electrical components, including but not limited to optical rangefinders, are existing components that were custom-made or purchased. The electrical connections between these components are conventional circuit or electrical connections in the prior art and are not within the scope of protection of this utility model.

[0032] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. An optical ranging device for land surveying, comprising a support mechanism, an installation mechanism, an optical rangefinder, and a reflection mechanism; characterized in that... The support mechanism consists of two sets, which are fixed at both ends of the land to be measured. The installation mechanism is fixed on the top of one set of support mechanisms. The optical rangefinder is installed on the support mechanism with the installation mechanism, and the reflection mechanism is installed on the support mechanism without the installation mechanism. The support mechanism includes a disc, support legs, support columns, guide columns, a two-way threaded rod, a locking disc, a limiting ring, and a guide rod. Several support legs are evenly rotatably connected to the disc. The guide columns are fixed to the bottom of the disc, with a hollow interior and guide grooves on their side walls. The two-way threaded rod is rotatably connected inside the support columns, with a handwheel in the middle. The locking disc is connected to the guide columns and passes through the guide grooves, connecting to the two-way threaded rod via threads. The locking disc has locking grooves on its side walls, corresponding to the support legs. The limiting ring is located outside the locking disc and is fixed with bolts. The support columns are threaded to the two-way threaded rod and are symmetrical to the locking disc. A guide rod is located at the top of the support column, passing through the guide column and the locking disc. The mounting mechanism includes a mounting plate and a shielding plate. The mounting plate is mounted on the disc of the support mechanism. The mounting plate has a mounting groove. The optical rangefinder is installed inside the mounting groove and fixed with bolts. The mounting plate has a shielding plate located between the receiver and transmitter of the optical rangefinder. The reflection mechanism includes a base plate, a reflector, a shielding frame, and a shielding cloth; the base plate is fixed on the disc of the support mechanism, the reflector is fixed on the base plate, the shielding frame is fixed on the top and sides of the reflector, and the shielding cloth is connected to one end of the shielding frame.

2. The optical distance measuring device for land surveying according to claim 1, characterized in that... The support leg includes a sleeve, a telescopic rod, a rotating plate, and a cutting pin; one end of the sleeve is rotatably connected to the disc, the telescopic rod is connected to the other end of the sleeve and fixed with bolts, the rotating plate is rotatably connected to the rotating plate via a rotating shaft, and the cutting pin is threadedly connected to the rotating plate.

3. The optical distance measuring device for land surveying according to claim 1, characterized in that... An adjustment mechanism is provided between the mounting mechanism and the support mechanism; the adjustment mechanism includes a rotating shaft, a worm gear, a worm, and a support plate; the rotating shaft is fixed to the bottom of the mounting plate and is rotatably connected to the disc via a bearing; the worm gear is connected to the outer wall of the rotating shaft; the support plate is fixed to the disc, and the worm is rotatably connected to the support plate via a bearing, with the worm meshing with the worm gear; and a handle is provided at one end of the worm.

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