A building distance measuring device for geographic information surveying and mapping

Abstract

The present invention discloses a building distance measuring device for geographic information surveying and mapping, comprising a cart and a measuring chamber fixedly installed on the upper end of the cart, and a moving wheel is fixedly installed on the lower left end of the cart, a first bevel gear rod is fixedly installed on the inner side of the moving wheel, and the first bevel gear rod rotates following the rotation of the moving wheel, and a counting and measuring mechanism is arranged on the right side of the first bevel gear rod, and a counter is fixedly installed on the inner wall of the upper end of the measuring chamber, and the counter counts once when the moving wheel rotates half a meter. The building distance measuring device for geographic information surveying and mapping is provided with a moving wheel capable of measuring the moving distance, and the movement of the cart causes the moving wheel at the bottom to rotate accordingly, and the rolling of the moving wheel drives the first bevel gear rod to rotate, and as the moving wheel rotates half a meter, the counter is squeezed once to count, and finally the distance can be calculated through the reading on the display screen, thereby achieving the effect of convenient statistical measurement of the path distance between buildings.

Description

Technical Field

[0001] The invention relates to the technical field of geographic information surveying and mapping, and in particular to a building distance measuring device for geographic information surveying and mapping. Background Art

[0002] Building distance measuring equipment for geographic information surveying and mapping is a device for detecting the distance between buildings. Geographic information surveying and mapping is to mark the location of buildings and the distance of ground paths on the map, which can facilitate the precise arrangement of subsequent construction. However, the existing building distance measuring equipment for geographic information surveying and mapping still has certain defects, such as:

[0003] For example, a device for measuring the length of a building with the announcement number CN212007170U includes a support, a distance meter and a digital angle ruler, wherein the digital angle ruler includes a first measuring arm and a second measuring arm that are hinged to each other, the first measuring arm is fixed to the support, and the distance meter is arranged on the second measuring arm. The present invention can measure the length and width of a building by cooperating with the distance meter and the digital angle ruler, thereby improving the efficiency of measurement, and does not need to be close to the building during measurement, thereby reducing safety hazards.

[0004] The above-mentioned building side measurement device can reduce safety hazards by setting the distance meter on the second measuring arm. However, when using the distance measuring device for distance detection, if it is necessary to detect the distance at different positions, it is necessary to unplug and insert the device again, which is cumbersome and not conducive to convenient use by staff.

[0005] For example, a laser ranging building settlement measuring device with announcement number CN220649461U includes a fixed plate and a rangefinder, a mounting frame is fixed on the top of the fixed plate, a hanger is fixed at the bottom center of the fixed plate, a fixed ball is movably fixed on the inner side of the hanger, a connecting mechanism is fixed on the bottom of the fixed ball, a limiting mechanism is fixed on the top of the rangefinder, the connecting mechanism is connected to the limiting mechanism, and the fixed plate is set in a disc shape. This invention is provided with a fixed ball, and the rangefinder is fixed to the lower end of the fixed ball. The movable fixation of the fixed ball can keep the rangefinder in a vertical state at all times, so there is no need to calibrate and adjust the rangefinder, which improves the convenience of using the rangefinder. By arranging a sleeve, an anti-collision pad and a dust cover on the outside of the rangefinder, this setting can protect the rangefinder from dust and increase the service life of the rangefinder. The coordination of the connecting mechanism and the limiting mechanism can make the disassembly and assembly of the rangefinder more convenient.

[0006] The above-mentioned laser ranging building settlement measuring device can keep the rangefinder in a vertical state at all times through the movable fixation of the fixed ball, and can achieve the effect of convenient disassembly and assembly. However, when using the device for measurement, the device is fixed in the same position, the measurement result is not accurate, and errors are prone to occur. Summary of the invention

[0007] The purpose of the present invention is to provide a building distance measuring device for geographic information surveying and mapping, so as to solve the problems raised in the above background technology that it is relatively cumbersome, not convenient for staff to use conveniently, the device is fixed in the same position, the measurement results are not accurate, and errors are prone to occur.

[0008] To achieve the above object, the present invention provides the following technical solution: a building distance measurement device for geographic information surveying and mapping, comprising a cart and a measurement chamber fixedly installed on the upper end of the cart, and a moving wheel fixedly installed on the lower left end of the cart;

[0009] A first bevel gear rod is fixedly mounted on the inner side of the moving wheel, and the first bevel gear rod rotates with the rotation of the moving wheel, and a counting and measuring mechanism is arranged on the right side of the first bevel gear rod, and a counter is fixedly mounted on the inner wall of the upper end of the measuring chamber, and the counter counts once when the moving wheel rotates half a meter;

[0010] An air outlet is fixedly mounted on the inner upper end of the moving wheel, and cleaning brushes are arranged inside the front and rear ends of the air outlet, and a cleaning error prevention mechanism is arranged inside the cleaning brush;

[0011] A universal wheel is fixedly installed at the lower right end of the cart, and a running wheel is arranged at the bottom of the middle end of the cart, and an adjusting linear mechanism is arranged at the upper end of the running wheel, and the adjusting linear mechanism can make the cart move linearly through the running wheel.

[0012] Furthermore, the counting and measuring mechanism is provided with a second bevel gear rod, and a first limiting kit is installed through the middle end of the second bevel gear rod, and the upper end of the first limiting kit is fixedly installed on the bottom of the cart, and the left side of the second bevel gear rod is meshed with the middle end of the first bevel gear rod, and a belt is nested on the right side of the second bevel gear rod, and a disc rod is nested on the upper end of the belt.

[0013] Furthermore, the left side of the disc rod is rotatably mounted on the left inner wall of the trolley, and the right end of the disc rod is fixedly mounted with a round rod, and a push rod is nested on the surface of the round rod, and a second limit sleeve is installed through the middle end of the push rod, and the left bolt of the second limit sleeve is installed on the left inner wall of the measuring chamber, and a lifting plate is fixedly mounted on the upper end of the push rod, and a positioning rod is fixedly mounted on the upper end of the lifting plate.

[0014] Furthermore, a buffer block is installed through the surface of the positioning rod, and a buffer rod is rotatably installed on the upper end of the buffer block, and a contact plate is rotatably installed on the upper end of the buffer rod, and a reset spring is installed through the surface of the positioning rod, the left and right ends of the reset spring are fixedly installed between the buffer block and the lifting plate, and a damping rod is fixedly installed between the lifting plate and the contact plate, and the contact plate corresponds to the position of the counter, and the counter is connected to the display screen through a wire, and the display screen is fixedly installed on the outer side of the upper end of the measuring chamber.

[0015] Furthermore, the cleaning and error prevention mechanism is provided with an extrusion plate, and the extrusion plate is fixedly installed on the upper left end of the lifting plate, and the upper end of the extrusion plate is installed through the interior of the fixed bin, and the fixed bin is clamped inside the upper end of the measuring bin, and an airbag is fixedly installed inside the fixed bin.

[0016] Furthermore, the material of the airbag is set to be an elastic material, and the airbag and the extrusion plate form a pressed structure, and an air guide hose is installed through the left side of the upper end of the airbag, and the lower end of the air guide hose is installed through the upper end of the air outlet, and a one-way air inlet is installed through the upper right end of the airbag, and a one-way valve is arranged inside the one-way air inlet.

[0017] Furthermore, a pressure spring is fixedly installed between the air outlet and the cleaning brush, and the output end of the air outlet is respectively aligned with the cleaning brush and the meshing position of the first bevel gear rod and the second bevel gear rod, and the lower end of the cleaning brush is in contact with the moving wheel.

[0018] Furthermore, the linear adjustment mechanism is provided with a threaded sleeve, and the lower end bolt of the threaded sleeve is installed on the bottom inner wall of the measuring chamber, and the internal thread of the threaded sleeve is installed with a threaded rod.

[0019] Furthermore, the threaded rod passes through the mounting trolley and the measuring chamber, and the bottom of the threaded rod is rotatably mounted on the upper end of the lifting platform.

[0020] Furthermore, four running wheels are rotatably installed inside the lifting platform, and limit rods are fixedly installed at the left and right ends of the lifting platform, and the limit rods penetrate the installation trolley and the measuring chamber.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. A mobile wheel capable of measuring the moving distance is provided. When conducting geographic information surveying and mapping, the distance between buildings is measured. By pushing the cart, the cart moves so that the mobile wheel at the bottom rotates accordingly. The rolling of the mobile wheel drives the first bevel gear rod to rotate. The rotation of the first bevel gear rod drives the second bevel gear rod meshed and installed at its right end to rotate. The second bevel gear rod drives the disc rod to rotate through a belt under the limit of the first limit kit. The rotation of the disc rod drives the push rod through the round rod on the surface. The push rod moves up and down under the limit of the second limit kit to drive the lifting plate. The lifting plate can move up and down to contact the counter. The counter transmits the number of contacts to the display screen through a wire. As the mobile wheel rotates half a meter, the counter is squeezed once to count. Finally, the distance can be calculated through the reading on the display screen, thereby realizing the effect of convenient statistical measurement of the path distance between buildings;

[0023] Furthermore, when the lifting plate squeezes the counter, through the shock-absorbing assembly arranged on the surface of the lifting plate, when the lifting plate rises, the contact plate first contacts the counter, and the pressure applied by the contact plate is counted. At this time, the contact plate applies pressure to the buffer rod in the opposite direction, and the buffer rod rotates to push the buffer block to slide along the positioning rod. The buffer block slides along the positioning rod to squeeze the reset spring, and the reset spring is reset by its own elastic force, thereby achieving a buffering effect. At the same time, the pressure is released through the damping rod between the contact plate and the lifting plate to avoid reciprocating vibration of the reset spring, thereby achieving a protective effect, avoiding damage to the counter under long-term use, and improving the quality of the device and increasing the service life of the device.

[0024] 2. When the lifting plate is rising, the airbag inside the fixed bin is squeezed by the squeezing plate, and the air inside the airbag is squeezed and delivered to the outlet through the air guide hose. The bottom center output end of the outlet is aligned with the meshing position of the first bevel gear rod and the second bevel gear rod, and the connection between the first bevel gear rod and the second bevel gear rod is blown to avoid unstable connection caused by excessive impurities on the ground and avoid large deviations in the measurement results;

[0025] Furthermore, cleaning brushes are provided at the bottom of the front and rear ends of the air outlet. The cleaning brushes can fit the moving wheel through the pressure spring between the cleaning brushes and the air outlet. As the moving wheel rotates, the moving wheel can be cleaned to prevent the surface of the moving wheel from being contaminated with stones, resulting in inaccurate measurement results. At the same time, the output ends on both sides of the front and rear ends of the bottom of the air outlet are aligned with the cleaning brushes, so that the cleaning brushes can be cleaned, further improving the cleaning effect and ensuring the accuracy of the effect when measuring the path distance between buildings.

[0026] 3. A component capable of adjusting straight-line measurement or curved route measurement is provided. When the threaded rod rotates along the threaded sleeve and is limited by the limit rod, the lifting platform can drive the traveling wheels to move up and down. When curved route measurement is required, the lifting platform is lifted so that the right universal wheel touches the ground and the device can perform turning measurement. If the straight-line distance needs to be measured, the threaded rod is rotated so that the threaded rod moves down along the threaded sleeve, and the lifting platform is rotatably connected to the threaded rod. As the threaded rod rotates, the lifting platform is limited and lowered by the limit rod, so that the traveling wheels inside the lifting platform touch the ground, and the traveling wheels cannot rotate back and forth and can only roll in a straight line, thereby realizing measurement of different routes. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view structural schematic diagram of the present invention;

[0028] Figure 2 It is a schematic diagram of the front cross-sectional structure of the present invention;

[0029] Figure 3 It is a schematic diagram of the three-dimensional structure of the disc rod of the present invention;

[0030] Figure 4 It is a schematic diagram of the top view structure of the present invention;

[0031] Figure 5 It is a schematic diagram of the front cross-sectional structure of the positioning rod of the present invention;

[0032] Figure 6 It is a schematic diagram of the cross-sectional structure of the air outlet of the present invention;

[0033] Figure 7 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0034] Figure 8 This is a schematic diagram of the three-dimensional structure of the lifting platform of the present invention;

[0035] Fig. 9 This is a schematic diagram of the three-dimensional structure of the fixed bin of the present invention;

[0036] Fig.10 It is a schematic diagram of the side sectional structure of the extruded plate of the present invention.

[0037] In the figure: 1. cart; 2. measuring chamber; 3. moving wheel; 4. first bevel gear rod; 5. second bevel gear rod; 6. first limit kit; 7. belt; 8. disc rod; 9. round rod; 10. push rod; 11. lifting plate; 12. second limit sleeve; 13. positioning rod; 14. buffer block; 15. buffer rod; 16. contact plate; 17. reset spring; 18. damping rod; 19. counter; 20. display screen; 21. extrusion plate; 22. fixed chamber; 23. air bag; 24. air guide hose; 25. one-way air inlet; 26. air outlet; 27. pressure spring; 28. cleaning brush; 29. ​​universal wheel; 30. threaded sleeve; 31. threaded rod; 32. lifting platform; 33. running wheel; 34. limit rod. DETAILED DESCRIPTION

[0038] 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.

[0039] Example 1: Figure 1-Figure 6 and Fig.10The technical solution shown, in order to solve the problem of inconvenient measurement, discloses a counting and measuring mechanism: a cart 1 and a measuring chamber 2 fixedly installed on the upper end of the cart 1, and a moving wheel 3 is fixedly installed on the lower left end of the cart 1, a first bevel gear rod 4 is fixedly installed on the inner side of the moving wheel 3, and the first bevel gear rod 4 rotates with the rotation of the moving wheel 3, and a counting and measuring mechanism is arranged on the right side of the first bevel gear rod 4, and a counter 19 is fixedly installed on the inner wall of the upper end of the measuring chamber 2, and the counter 19 counts once when the moving wheel 3 rotates half a meter, the counting and measuring mechanism is provided with a second bevel gear rod 5, and a first limiting kit 6 is installed through the middle end of the second bevel gear rod 5, and the upper end of the first limiting kit 6 is fixedly installed on the bottom of the cart 1, and the left side of the second bevel gear rod 5 is meshed with the middle end of the first bevel gear rod 4, a belt 7 is nested on the right side of the second bevel gear rod 5, and a disc rod 8 is nested on the upper end of the belt 7, and the left side of the disc rod 8 is rotatably installed on the cart 1 The left inner wall of the measuring chamber 2 is a left inner wall of the measuring chamber 2, and a round rod 9 is fixedly installed on the right end of the disc rod 8, and a push rod 10 is nested on the surface of the round rod 9, and a second limit sleeve 12 is installed through the middle end of the push rod 10, and the left bolt of the second limit sleeve 12 is installed on the left inner wall of the measuring chamber 2, and a lifting plate 11 is fixedly installed on the upper end of the push rod 10, and a positioning rod 13 is fixedly installed on the upper end of the lifting plate 11, and a buffer block 14 is installed through the surface of the positioning rod 13, and a buffer rod 15 is rotatably installed on the upper end of the buffer block 14, and a contact plate 16 is rotatably installed on the upper end of the buffer rod 15, and a reset spring 17 is penetrated on the surface of the positioning rod 13, and the left and right ends of the reset spring 17 are fixedly installed between the buffer block 14 and the lifting plate 11, and a damping rod 18 is fixedly installed between the lifting plate 11 and the contact plate 16, and the contact plate 16 corresponds to the position of the counter 19, and the counter 19 is connected to the display screen 20 through a wire, and the display screen 20 is fixedly installed on the outer side of the upper end of the measuring chamber 2;

[0040] In this example, a moving wheel 3 capable of measuring the moving distance is provided. When conducting geographic information surveying and mapping, the distance between buildings is measured. By pushing the cart 1, the cart 1 moves so that the moving wheel 3 at the bottom rotates accordingly. The rolling of the moving wheel 3 drives the first bevel gear rod 4 to rotate. The rotation of the first bevel gear rod 4 drives the second bevel gear rod 5 meshingly installed at its right end to rotate. The second bevel gear rod 5 drives the disc rod 8 to rotate through the belt 7 under the limit of the first limiting kit 6. The rotation of the disc rod 8 drives the push rod 10 through the round rod 9 on the surface. The push rod 10 moves up and down under the limit of the second limiting kit 12, driving the lifting plate 11. The lifting plate 11 can move up and down to contact the counter 19. The counter 19 transmits the number of contacts to the display screen 20 through the wire for display. As the moving wheel 3 rotates half a meter, the counter 19 is squeezed once for counting, and finally the number of contacts can be displayed on the display screen 20. The distance is calculated by reading the reading, so as to achieve the effect of convenient statistical measurement of the path distance between buildings. When the lifting plate 11 squeezes the counter 19, through the shock-absorbing component arranged on the surface of the lifting plate 11, when the lifting plate 11 rises, the contact plate 16 first contacts the counter 19, and the statistics are performed through the pressure applied by the contact plate 16. At this time, the contact plate 16 reversely applies pressure to the buffer rod 15, and the buffer rod 15 rotates to push the buffer block 14 to slide along the positioning rod 13. The buffer block 14 slides along the positioning rod 13 to squeeze the reset spring 17, and the reset spring 17 is reset by its own elastic force, so as to achieve the buffering effect. At the same time, the damping rod 18 between the contact plate 16 and the lifting plate 11 is used to release the pressure to avoid the reciprocating vibration of the reset spring 17, so as to achieve the protection effect, avoid the counter 19 from being damaged under long-term use, improve the quality of the device, and increase the service life of the device.

[0041] Example 2: Figure 2 , Figure 6 , Figure 7 , Fig. 9 and Fig.10The technical solution shown in the figure discloses a cleaning error prevention mechanism in order to solve the problem that the measurement result is prone to deviation: an air outlet 26 is fixedly installed on the inner upper end of the moving wheel 3, and cleaning brushes 28 are arranged inside the front and rear ends of the air outlet 26, and a cleaning error prevention mechanism is arranged inside the cleaning brush 28, and the cleaning error prevention mechanism is provided with a squeezing plate 21, and the squeezing plate 21 is fixedly installed on the left upper end of the lifting plate 11, and the upper end of the squeezing plate 21 is installed through the inside of the fixed bin 22, and the fixed bin 22 is clamped inside the upper end of the measuring bin 2, and an air bag 23 is fixedly installed inside the fixed bin 22, and the air bag 23 is fixedly installed inside the fixed bin 22. The material of the bag 23 is set to be an elastic material, and the air bag 23 and the extrusion plate 21 form a pressed structure, and an air guide hose 24 is installed through the left side of the upper end of the air bag 23, and the lower end of the air guide hose 24 is installed through the upper end of the air outlet 26, and a one-way air inlet 25 is installed through the upper right end of the air bag 23, and a one-way valve is arranged inside the one-way air inlet 25, and a pressure spring 27 is fixedly installed between the air outlet 26 and the cleaning brush 28, and the output end of the air outlet 26 is respectively aligned with the cleaning brush 28 and the meshing position of the first bevel gear rod 4 and the second bevel gear rod 5, and the lower end of the cleaning brush 28 is in contact with the moving wheel 3;

[0042] In this example, when the lifting plate 11 rises, the air bag 23 inside the fixed bin 22 is squeezed by the squeezing plate 21, and the air in the air bag 23 is squeezed to deliver the air inside to the air outlet 26 through the air guide hose 24. The bottom center output end of the air outlet 26 is aligned with the meshing position of the first bevel gear rod 4 and the second bevel gear rod 5, and air is blown to the connection between the first bevel gear rod 4 and the second bevel gear rod 5 to avoid unstable connection caused by excessive impurities on the ground and large deviations in the measurement results. Cleaning brushes 28 are provided at the bottom of the front and rear ends of the air outlet 26. The cleaning brush 28 can fit the moving wheel 3 through the pressure spring 27 between the cleaning brush 28 and the air outlet 26. The moving wheel 3 can be cleaned with the rotation of the moving wheel 3 to prevent the surface of the moving wheel 3 from being contaminated with stones, which may cause inaccurate measurement results. At the same time, the output ends on both sides of the bottom of the air outlet 26 are aligned with the cleaning brush 28, so that the cleaning brush 28 can be cleaned, thereby further improving the cleaning effect and ensuring the accuracy of the effect when measuring the path distance between buildings. At the same time, a one-way air inlet 25 is provided at the upper right end of the airbag 23, and a one-way valve is provided inside the one-way air inlet 25. The setting of the one-way valve can make the airbag 23 only able to inhale air through the one-way air inlet 25, and the elastically arranged airbag 23 can be circulated and inflated with use as the extrusion plate 21 rises and falls;

[0043] Example 3: Figure 1 , Figure 2 and Figure 8The technical solution shown, in order to solve the problem of inconvenience in measuring straight lines and curved roads, discloses an adjusting linear mechanism: a universal wheel 29 is fixedly installed at the lower right end of the cart 1, and a running wheel 33 is arranged at the middle bottom of the cart 1, and an adjusting linear mechanism is arranged at the upper end of the running wheel 33, and the adjusting linear mechanism can make the cart 1 move linearly through the running wheel 33, the adjusting linear mechanism is provided with a threaded sleeve 30, and the lower end bolt of the threaded sleeve 30 is installed on the bottom inner wall of the measuring chamber 2, and the internal thread of the threaded sleeve 30 is installed with a threaded rod 31, the threaded rod 31 penetrates the installation cart 1 and the measuring chamber 2, and the bottom of the threaded rod 31 is rotatably installed on the upper end of the lifting platform 32, the lifting platform 32 is rotatably installed with four running wheels 33, and the left and right ends of the lifting platform 32 are fixedly installed with limit rods 34, and the limit rods 34 penetrate the installation cart 1 and the measuring chamber 2;

[0044] In this embodiment, a component capable of adjusting straight-line measurement or curved route measurement is provided. When the threaded rod 31 rotates along the threaded sleeve 30, the lifting platform 32 is limited by the limit rod 34 and can drive the running wheel 33 to move up and down. When curved route measurement is required, the lifting platform 32 is lifted so that the right universal wheel 29 touches the ground, and the device can perform turning measurement. If a straight-line distance needs to be measured, the threaded rod 31 is rotated so that the threaded rod 31 moves downward along the threaded sleeve 30, and the lifting platform 32 is rotatably connected to the threaded rod 31. As the threaded rod 31 rotates, the lifting platform 32 is limited by the limit rod 34 and descends, so that the running wheel 33 inside the lifting platform 32 touches the ground, and the running wheel 33 cannot rotate back and forth and can only roll in a straight line, thereby realizing measurement of different routes.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A building distance measuring device for geographic information surveying and mapping, comprising a cart (1) and a measuring chamber (2) fixedly mounted on the upper end of the cart (1), and a moving wheel (3) fixedly mounted on the lower left end of the cart (1); Features: A first bevel gear rod (4) is fixedly mounted on the inner side of the moving wheel (3), and the first bevel gear rod (4) rotates in accordance with the rotation of the moving wheel (3), and a counting and measuring mechanism is arranged on the right side of the first bevel gear rod (4), and a counter (19) is fixedly mounted on the inner wall of the upper end of the measuring chamber (2), and the counter (19) counts once every half meter that the moving wheel (3) rotates; An air outlet (26) is fixedly mounted on the inner upper end of the moving wheel (3), and cleaning brushes (28) are arranged inside the front and rear ends of the air outlet (26), and a cleaning error prevention mechanism is arranged inside the cleaning brush (28); A universal wheel (29) is fixedly mounted on the lower right end of the cart (1), and a running wheel (33) is arranged at the bottom of the middle end of the cart (1), and an adjusting linear mechanism is arranged at the upper end of the running wheel (33), and the adjusting linear mechanism can make the cart (1) move linearly through the running wheel (33); The counting and measuring mechanism is provided with a second bevel gear rod (5), and a first limit kit (6) is installed through the middle end of the second bevel gear rod (5), and the upper end of the first limit kit (6) is fixedly installed on the bottom of the cart (1), and the left side of the second bevel gear rod (5) is meshed with the middle end of the first bevel gear rod (4), and a belt (7) is installed in a nested manner on the right side of the second bevel gear rod (5), and a disc rod (8) is installed in a nested manner on the upper end of the belt (7); The left side of the disc rod (8) is rotatably mounted on the left inner wall of the trolley (1), and a round rod (9) is fixedly mounted on the right end of the disc rod (8), and a push rod (10) is nested and mounted on the surface of the round rod (9), and a second limiting sleeve (12) is penetrated and mounted on the middle end of the push rod (10), and the left bolt of the second limiting sleeve (12) is mounted on the left inner wall of the measuring chamber (2), and a lifting plate (11) is fixedly mounted on the upper end of the push rod (10), and a positioning rod (13) is fixedly mounted on the upper end of the lifting plate (11); A buffer block (14) is installed through the surface of the positioning rod (13), and a buffer rod (15) is rotatably installed on the upper end of the buffer block (14), and a contact plate (16) is rotatably installed on the upper end of the buffer rod (15), and a return spring (17) is installed through the surface of the positioning rod (13), and the left and right ends of the return spring (17) are fixedly installed between the buffer block (14) and the lifting plate (11), and a damping rod (18) is fixedly installed between the lifting plate (11) and the contact plate (16), and the contact plate (16) corresponds to the position of the counter (19), and the counter (19) is connected to a display screen (20) through a wire, and the display screen (20) is fixedly installed on the outer side of the upper end of the measuring chamber (2); The cleaning error prevention mechanism is provided with a squeezing plate (21), and the squeezing plate (21) is fixedly mounted on the upper left end of the lifting plate (11), and the upper end of the squeezing plate (21) is installed through the interior of the fixed bin (22), and the fixed bin (22) is clamped and arranged inside the upper end of the measuring bin (2), and an air bag (23) is fixedly mounted inside the fixed bin (22); The material of the airbag (23) is set to be an elastic material, and the airbag (23) and the extrusion plate (21) form a pressed structure, and an air guide hose (24) is installed through the left side of the upper end of the airbag (23), and the lower end of the air guide hose (24) is installed through the upper end of the air outlet (26), and a one-way air inlet (25) is installed through the upper right end of the airbag (23), and a one-way valve is arranged inside the one-way air inlet (25); A pressure spring (27) is fixedly installed between the air outlet (26) and the cleaning brush (28), and the output end of the air outlet (26) is respectively aligned with the cleaning brush (28) and the meshing position of the first bevel gear rod (4) and the second bevel gear rod (5), and the lower end of the cleaning brush (28) is in contact with the moving wheel (3).

2. A building distance measuring device for geographic information surveying and mapping according to claim 1, characterized in that: The linear adjustment mechanism is provided with a threaded sleeve (30), and a lower end bolt of the threaded sleeve (30) is mounted on the bottom inner wall of the measuring chamber (2), and a threaded rod (31) is mounted on the inner thread of the threaded sleeve (30).

3. A building distance measuring device for geographic information surveying and mapping according to claim 2, characterized in that: The threaded rod (31) passes through the mounting trolley (1) and the measuring chamber (2), and the bottom of the threaded rod (31) is rotatably mounted on the upper end of the lifting platform (32).

4. The building distance measuring device for geographic information surveying and mapping according to claim 3, characterized in that: The lifting platform (32) is internally rotatably mounted with four running wheels (33), and limit rods (34) are fixedly mounted at both left and right ends of the lifting platform (32), and the limit rods (34) penetrate the mounting trolley (1) and the measuring chamber (2).

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