A surveying and mapping device for land survey and mapping

Abstract

The invention relates to the technical field of land surveying and mapping, and specifically discloses a surveying and mapping device for land survey and mapping, comprising: a pedal positioning rod; a supporting mechanism, wherein the supporting mechanism is arranged at the top end of the pedal positioning rod, and the supporting mechanism comprises a supporting adjustment rod, a fixing seat and a limiting rod; the invention provides a fixing sleeve seat, a sliding sleeve and a rack plate, so that when cleaning the instrument lens, the sliding sleeve can be slid and adjusted on the outside of the mounting tube by a stretching operation, at which time, the meshing connection between the worm wheel and the rack plate can drive the worm wheel to rotate, and when the worm wheel is meshed with the worm, the rotation of the worm wheel then drives the worm to rotate, and then the connecting rod is rotated, thereby controlling the first rotating rod to perform a circular motion on the connecting rod, and this process realizes automatic cleaning of the surface of the instrument mounting tube, and compared with manual wiping, this method effectively avoids shaking of the instrument mounting tube, thereby ensuring the improvement of accuracy in the surveying and mapping process.

Description

Technical Field

[0001] The invention belongs to the technical field of land surveying and mapping, and in particular relates to a surveying and mapping device used for land investigation and mapping. Background Art

[0002] Land surveying and mapping devices are mainly used to measure, record, analyze and manage land and its related resources. A total station is needed for surveying and mapping. A total station is a modern measuring instrument that combines the functions of an electronic rangefinder and a theodolite. It can measure angles and distances at the same time and is widely used in engineering surveying, land surveying, and construction.

[0003] In the Chinese patent with publication number CN115325386A, a surveying and mapping device for land surveying and mapping is mentioned, including a measuring instrument, a mounting frame, a bracket and a fixing device, the measuring instrument is arranged on the mounting frame, the mounting frame is respectively hinged with three brackets, the fixing device includes a conical fixing column and a force plate arranged on the top of the fixing column, the bottom of the three brackets are provided with a through groove, the side wall of the through groove is rotatably connected with the fixing column of the fixing device, the force plate end of the fixing device can rotate around the rotation center, the conical end of the fixing device rotates around the rotation center and contacts the bottom of the bracket, the part of the bracket that contacts the conical end of the fixing device is provided with a receiving groove, and the conical end of the fixing device can be received in the receiving groove. The present invention can be applied to land surveying and mapping work on both soft and hard grounds, and has strong applicability.

[0004] The land survey and mapping device in the above-mentioned comparative patent can be applied to land surveying and mapping work on both soft and hard ground, but it is often used in the field, which can easily cause the lens of the total station to be contaminated with dust. The existing method of cleaning the lens of the total station is rather cumbersome, and when wiping the lens, it is easy to cause the lens to shake, thereby affecting the accuracy of surveying and mapping. Summary of the invention

[0005] The object of the present invention is to provide a surveying and mapping device for land survey and mapping to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A surveying and mapping device for land survey and mapping, comprising:

[0008] Foot positioning lever;

[0009] A support mechanism, the support mechanism is arranged at the top end of the pedal positioning rod, the support mechanism comprises a support adjustment rod, a fixed seat and a limit rod, the support adjustment rod is fixedly connected to the top end of the pedal positioning rod, the outer sleeve of the support adjustment rod is provided with a fixed seat, the inner part of the fixed seat is inserted with a limit rod, the top end of the limit rod is fixedly connected to a rotating seat, and the top end of the rotating seat is rotatably connected to a horizontal seat plate;

[0010] An adjustment mechanism, the adjustment mechanism is installed at the top of the support mechanism, the adjustment mechanism comprises a leveling knob, a surveying instrument and a dust cover, the leveling knob is arranged at the top of the horizontal seat plate, the top of the leveling knob is provided with a surveying instrument, the inside of the surveying instrument is provided with a dust cover, and the outside of the dust cover is provided with a transmission mechanism;

[0011] A transmission mechanism, a cleaning mechanism is arranged on the outside of the transmission mechanism, a limiting mechanism is arranged on the bottom end of the transmission mechanism, the transmission mechanism is arranged on the outside of the adjustment mechanism, the transmission mechanism comprises a fixed sleeve, a sliding sleeve and an instrument mounting tube, the fixed sleeve is arranged on the top end of the adjustment mechanism, a sliding sleeve is inserted inside the fixed sleeve, an instrument mounting tube is inserted inside the sliding sleeve, a rack plate is arranged on the outside of one side of the sliding sleeve, a first fixed plate is fixedly connected to the outside of one side of the fixed sleeve, a worm gear is rotatably connected to the outside of the first fixed plate, a worm gear is meshed with the outside of the worm gear, the cleaning mechanism comprises a connecting rod, a first rotating rod and a cleaning scraper, one side of the connecting rod is fixedly connected to the outside of the worm gear, the first rotating rod is fixedly connected to the outside of the connecting rod, and the cleaning scraper is fixedly connected to one side of the first rotating rod, the limiting mechanism comprises a second fixed plate, a bearing seat and a second rotating rod, the second fixed plate is fixedly connected to the outside of the fixed sleeve by screws, a bearing seat is arranged on the top end of the second fixed plate, and a second rotating rod is inserted inside the bearing seat.

[0012] Preferably, the worm gear is meshedly connected with the rack plate, the sliding sleeve is slidably connected to the outside of the instrument mounting tube, the sliding sleeve is slidably connected to the inside of the fixed sleeve seat, the rack plate is in the shape of an elongated strip, and a pulling block is provided at the top of the sliding sleeve.

[0013] Preferably, a plurality of rotating seats are arranged outside the horizontal seat plate, the support adjustment rod is slidably connected inside the fixed seat, and the rotating seat is welded to the top end of the limiting rod.

[0014] Preferably, the cleaning scraper is made of elastic sponge material, the cleaning scraper is pressed against the outside of the instrument mounting tube, and the first rotating rod is fixedly connected to the outside of the connecting rod by screws.

[0015] Preferably, one side of the second rotating rod is fixedly connected to the outer side wall of the worm, and the second rotating rod is rotatably connected inside the bearing seat.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The present invention provides a fixed sleeve, a sliding sleeve, an instrument mounting tube and a rack plate, so that when the instrument lens is cleaned, the sliding sleeve can be slid and adjusted on the outside of the mounting tube by stretching. At this time, the meshing connection between the worm wheel and the rack plate can drive the worm wheel to rotate. When the worm wheel is meshed with the worm, the rotation of the worm wheel drives the worm to rotate, and then the connecting rod rotates, thereby controlling the first rotating rod to perform a circular motion on the connecting rod. This process realizes automatic cleaning of the surface of the instrument mounting tube, ensuring a fast and stable cleaning effect. Compared with manual wiping, this method effectively avoids shaking of the instrument mounting tube, thereby ensuring improved accuracy during the surveying and mapping process.

[0018] (2) The present invention provides a leveling knob, a surveying and mapping instrument, a fixing seat and a limit rod, so that after the support adjustment rod is slidably adjusted inside the fixing seat, the length of the support adjustment rod can be flexibly adjusted, thereby realizing horizontal and stable support of the surveying and mapping instrument at different positions. At the same time, the surveying and mapping instrument can be adjusted horizontally by rotating the leveling knob, thereby improving the convenience and stability of the instrument when used. This design enables users to adapt to various surveying and mapping environments more conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 For the present invention Figure 1 The overall structural diagram of the middle support mechanism;

[0021] Figure 3 For the present invention Figure 1 The overall structural diagram of the middle adjustment mechanism;

[0022] Figure 4 For the present invention Figure 1 The overall structural diagram of the transmission mechanism;

[0023] Figure 5 For the present invention Figure 4 The overall structural diagram of the cleaning mechanism;

[0024] Figure 6 For the present invention Figure 4 A schematic diagram of the enlarged structure at point A in the middle.

[0025] In the figure: 1. foot positioning rod; 2. supporting mechanism; 201. supporting adjustment rod; 202. fixed seat; 203. limiting rod; 204. rotating seat; 205. horizontal seat plate; 3. adjusting mechanism; 301. leveling knob; 302. surveying and mapping instrument; 303. dust cover; 4. transmission mechanism; 401. fixed sleeve seat; 402. sliding sleeve; 403. instrument mounting tube; 404. rack plate; 405. first fixed plate; 406. worm gear; 407. worm; 5. cleaning mechanism; 501. connecting rod; 502. first rotating rod; 503. cleaning scraper; 6. limiting mechanism; 601. second fixed plate; 602. bearing seat; 603. second rotating rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1:

[0028] See also Figure 1-Figure 6 As shown, a surveying and mapping device for land survey and mapping comprises:

[0029] Foot positioning rod 1;

[0030] A support mechanism 2, the support mechanism 2 is arranged at the top end of the pedal positioning rod 1;

[0031] An adjusting mechanism 3, the adjusting mechanism 3 is installed on the top of the supporting mechanism 2;

[0032] Transmission mechanism 4, the transmission mechanism 4 is arranged outside the adjustment mechanism 3, the transmission mechanism 4 includes a fixed sleeve 401, a sliding sleeve 402 and an instrument mounting tube 403, the fixed sleeve 401 is arranged at the top of the adjustment mechanism 3, the sliding sleeve 402 is inserted inside the fixed sleeve 401, the instrument mounting tube 403 is inserted inside the sliding sleeve 402, a rack plate 404 is arranged on the outside of one side of the sliding sleeve 402, a first fixed plate 405 is fixedly connected to the outside of one side of the fixed sleeve 401, a worm gear 406 is rotatably connected to the outside of the first fixed plate 405, and a worm 407 is meshed with the outside of the worm gear 406.

[0033] The worm gear 406 is meshedly connected with the rack plate 404, the sliding sleeve 402 is slidably connected to the outside of the instrument mounting tube 403, the sliding sleeve 402 is slidably connected to the inside of the fixed sleeve seat 401, the rack plate 404 is in the shape of an elongated strip, a pulling block is provided at the top of the sliding sleeve 402, a cleaning mechanism 5 is provided on the outside of the transmission mechanism 4, and a limiting mechanism 6 is provided at the bottom of the transmission mechanism 4.

[0034] Specifically, after the sliding sleeve 402 slides on the outside of the instrument mounting tube 403, the worm wheel 406 rotates after being meshed with the rack plate 404, so that after the worm wheel 406 is meshed with the worm 407, it can drive the worm 407 to rotate, which facilitates the rotation of the connecting rod 501 and cleans and scrapes the surface of the instrument mounting tube 403.

[0035] As can be seen from the above, when cleaning the instrument mounting tube 403, the sliding sleeve 402 is stretched so that the sliding sleeve 402 can be slidably adjusted on the outside of the instrument mounting tube 403. At this time, the meshing connection between the worm gear 406 and the rack plate 404 can drive the worm gear 406 to rotate. After the worm gear 406 is meshed with the worm 407, the rotation of the worm gear 406 can drive the worm 407 to rotate, thereby rotating the connecting rod 501, controlling the first rotating rod 502 to rotate in a circle on the connecting rod 501, and performing a cleaning and scraping operation on the surface of the instrument mounting tube 403, thereby achieving fast and stable cleaning of the instrument mounting tube 403, and avoiding the shaking of the instrument mounting tube 403 caused by manual wiping and cleaning, thereby affecting the accuracy of surveying and mapping.

[0036] refer to Figure 2 and Figure 4As shown, the transmission mechanism 4 is arranged outside the adjustment mechanism 3, and the transmission mechanism 4 includes a fixed sleeve seat 401, a sliding sleeve 402 and an instrument installation tube 403. The fixed sleeve seat 401 is arranged at the top of the adjustment mechanism 3, and the sliding sleeve 402 is inserted inside the fixed sleeve seat 401, and the instrument installation tube 403 is inserted inside the sliding sleeve 402. A rack plate 404 is arranged outside one side of the sliding sleeve 402, and a first fixed plate 405 is fixedly connected to the outside of one side of the fixed sleeve seat 401, and a worm gear 406 is rotatably connected to the outside of the first fixed plate 405, and a worm 407 is meshed on the outside of the worm gear 406, and the worm gear 406 is meshed with the rack plate 404, and the sliding sleeve 402 is slidably connected to the outside of the instrument installation tube 403, and the sliding sleeve 402 is connected to the outside of the instrument installation tube 403. It is slidably connected inside the fixed sleeve 401, the rack plate 404 is in a long strip shape, and a pulling block is arranged at the top of the sliding sleeve 402. The supporting mechanism 2 comprises a supporting adjusting rod 201, a fixed seat 202 and a limiting rod 203. The supporting adjusting rod 201 is fixedly connected to the top of the pedal positioning rod 1, the outer sleeve of the supporting adjusting rod 201 is provided with a fixed seat 202, and a limiting rod 203 is inserted inside the fixed seat 202. The top of the limiting rod 203 is fixedly connected with a rotating seat 204, and the top of the rotating seat 204 is rotatably connected with a horizontal seat plate 205. A plurality of rotating seats 204 are arranged on the outside of the horizontal seat plate 205. The supporting adjusting rod 201 is slidably connected inside the fixed seat 202, and the rotating seat 204 is welded to the top of the limiting rod 203.

[0037] Specifically, after the support adjustment rod 201 is slid and adjusted inside the fixed seat 202, the length of the support adjustment rod 201 can be adjusted, so as to facilitate the horizontal and stable support of the surveying and mapping instrument 302 in different places, and through the rotation of the leveling knob 301, the surveying and mapping instrument 302 can be adjusted horizontally, thereby facilitating the convenience and stability of the surveying and mapping instrument 302 when in use.

[0038] Embodiment 2:

[0039] refer to Figure 1-Figure 6As shown, the transmission mechanism 4 is arranged outside the adjustment mechanism 3, and the transmission mechanism 4 includes a fixed sleeve seat 401, a sliding sleeve 402 and an instrument mounting tube 403. The fixed sleeve seat 401 is arranged at the top of the adjustment mechanism 3, and the sliding sleeve 402 is inserted inside the fixed sleeve seat 401, and the instrument mounting tube 403 is inserted inside the sliding sleeve 402. A rack plate 404 is arranged outside one side of the sliding sleeve 402, and a first fixed plate 405 is fixedly connected to the outside of one side of the fixed sleeve seat 401, and a worm gear 406 is rotatably connected to the outside of the first fixed plate 405. A worm 407 is meshed on the outside of the worm gear 406, and the worm gear 406 is meshed with the rack plate 404. The sliding sleeve 402 is slidably connected to the outside of the instrument mounting tube 403, and the sliding sleeve 402 is slidably connected to the inside of the fixed sleeve seat 401. The rack plate 404 is in a long strip shape, and the top of the sliding sleeve 402 is provided with Pulling block, the adjustment mechanism 3 includes a leveling knob 301, a surveying instrument 302 and a dust cover 303. The leveling knob 301 is arranged at the top of the horizontal seat plate 205, and the surveying instrument 302 is arranged at the top of the leveling knob 301. The dust cover 303 is inserted into the interior of the surveying instrument 302, and the outside of the dust cover 303 is provided with a transmission mechanism 4. The cleaning mechanism 5 includes a connecting rod 501, a first rotating rod 502 and a cleaning scraper 503. One side of the connecting rod 501 is fixedly connected to the outside of the worm 407, and the outside of the connecting rod 501 is fixedly connected to the first rotating rod 502. One side of the first rotating rod 502 is fixedly connected to the cleaning scraper 503. The cleaning scraper 503 is made of elastic sponge material, and the cleaning scraper 503 is abutted against the outside of the instrument mounting tube 403. The first rotating rod 502 is fixedly connected to the outside of the connecting rod 501 by screws.

[0040] As can be seen from the above, when the worm 407 rotates, it drives the connecting rod 501 to rotate. At this time, the first rotating rod 502 rotates in a circle, so that the cleaning scraper 503 can clean and scrape the surface of the instrument mounting tube 403 after rotation, which is convenient for cleaning the surface of the instrument mounting tube 403. When cleaning the instrument mounting tube 403, the cleaning operation can be achieved only by sliding and stretching the sliding sleeve 402, which increases the convenience of cleaning and prevents the shaking of the instrument mounting tube 403.

[0041] Embodiment three:

[0042] refer to Figure 1-Figure 6As shown, the transmission mechanism 4 is arranged outside the adjustment mechanism 3, and the transmission mechanism 4 includes a fixed sleeve seat 401, a sliding sleeve 402 and an instrument installation tube 403. The fixed sleeve seat 401 is arranged at the top of the adjustment mechanism 3, and the sliding sleeve 402 is inserted inside the fixed sleeve seat 401, and the instrument installation tube 403 is inserted inside the sliding sleeve 402. A rack plate 404 is arranged outside one side of the sliding sleeve 402, and a first fixed plate 405 is fixedly connected to the outside of one side of the fixed sleeve seat 401, and a worm gear 406 is rotatably connected to the outside of the first fixed plate 405, and a worm 407 is meshed with the outside of the worm gear 406, and the worm gear 406 is meshed with the rack plate 404, and the sliding sleeve 40 2 is slidably connected to the outside of the instrument installation tube 403, the sliding sleeve 402 is slidably connected to the inside of the fixed sleeve seat 401, the rack plate 404 is in a long strip shape, and a pulling block is arranged at the top of the sliding sleeve 402. The limiting mechanism 6 includes a second fixed plate 601, a bearing seat 602 and a second rotating rod 603. The second fixed plate 601 is fixedly connected to the outside of the fixed sleeve seat 401 by screws, and a bearing seat 602 is arranged at the top of the second fixed plate 601. The second rotating rod 603 is inserted into the bearing seat 602. One side of the second rotating rod 603 is fixedly connected to the outer wall of the worm 407, and the second rotating rod 603 is rotatably connected inside the bearing seat 602.

[0043] Specifically, by rotating the second rotating rod 603 inside the bearing seat 602 , the stability of the connecting rod 501 during rotation can be increased, thereby greatly increasing the stability of the cleaning scraper 503 when cleaning the outside of the instrument mounting tube 403 .

[0044] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0045] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples and the features of the different embodiments or examples described in this specification without contradiction.

[0049] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A surveying and mapping device for land surveying and mapping, characterized in that: include: Foot pedal positioning rod (1); A support mechanism (2), the support mechanism (2) being arranged at the top end of the pedal positioning rod (1), the support mechanism (2) comprising a support adjustment rod (201), a fixed seat (202) and a limit rod (203), the support adjustment rod (201) being fixedly connected to the top end of the pedal positioning rod (1), the fixed seat (202) being sleeved on the outside of the support adjustment rod (201), the limit rod (203) being inserted inside the fixed seat (202), the top end of the limit rod (203) being fixedly connected to a rotating seat (204), the top end of the rotating seat (204) being rotatably connected to a horizontal seat plate (205); an adjusting mechanism (3), the adjusting mechanism (3) being mounted on the top of the supporting mechanism (2), the adjusting mechanism (3) comprising a leveling knob (301), a surveying instrument (302) and a dust cover (303), the leveling knob (301) being arranged on the top of the horizontal seat plate (205), the surveying instrument (302) being arranged on the top of the leveling knob (301), the dust cover (303) being inserted inside the surveying instrument (302), and the transmission mechanism (4) being arranged outside the dust cover (303); A transmission mechanism (4), wherein a cleaning mechanism (5) is arranged outside the transmission mechanism (4), a limiting mechanism (6) is arranged at the bottom end of the transmission mechanism (4), the transmission mechanism (4) is arranged outside the adjustment mechanism (3), the transmission mechanism (4) comprises a fixed sleeve (401), a sliding sleeve (402) and an instrument installation tube (403), the fixed sleeve (401) is arranged at the top of the adjustment mechanism (3), the sliding sleeve (402) is inserted inside the fixed sleeve (401), the instrument installation tube (403) is inserted inside the sliding sleeve (402), a rack plate (404) is arranged outside one side of the sliding sleeve (402), a first fixed plate (405) is fixedly connected to the outside of one side of the fixed sleeve (401), and a worm gear (406) is rotatably connected to the outside of the first fixed plate (405) The outside of the worm wheel (406) is meshed with a worm (407), the cleaning mechanism (5) comprises a connecting rod (501), a first rotating rod (502) and a cleaning scraper (503), one side of the connecting rod (501) is fixedly connected to the outside of the worm (407), the outside of the connecting rod (501) is fixedly connected to the first rotating rod (502), one side of the first rotating rod (502) is fixedly connected to the cleaning scraper (503), the limiting mechanism (6) comprises a second fixed plate (601), a bearing seat (602) and a second rotating rod (603), the second fixed plate (601) is fixedly connected to the outside of the fixed sleeve (401) by screws, the top of the second fixed plate (601) is provided with a bearing seat (602), and the second rotating rod (603) is inserted into the inside of the bearing seat (602).

2. A surveying and mapping device for land surveying and mapping according to claim 1, characterized in that: The worm gear (406) is meshedly connected with the rack plate (404), the sliding sleeve (402) is slidably connected to the outside of the instrument mounting tube (403), the sliding sleeve (402) is slidably connected to the inside of the fixed sleeve seat (401), the rack plate (404) is in the shape of a long strip, and a pulling block is provided at the top of the sliding sleeve (402).

3. A surveying and mapping device for land surveying and mapping according to claim 1, characterized in that: A plurality of rotating seats (204) are arranged outside the horizontal seat plate (205), the supporting adjustment rod (201) is slidably connected inside the fixed seat (202), and the rotating seat (204) is welded to the top end of the limiting rod (203).

4. A surveying and mapping device for land surveying and mapping according to claim 1, characterized in that: The cleaning scraper (503) is made of elastic sponge material, and the cleaning scraper (503) is pressed against the outside of the instrument mounting tube (403). The first rotating rod (502) is fixedly connected to the outside of the connecting rod (501) by screws.

5. A surveying and mapping device for land surveying and mapping according to claim 1, characterized in that: One side of the second rotating rod (603) is fixedly connected to the outer wall of the worm (407), and the second rotating rod (603) is rotatably connected inside the bearing seat (602).

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