CN116067351B

CN116067351B - Distance measuring instrument for urban and rural planning

Info

Publication number: CN116067351B
Application number: CN202310356751.6A
Authority: CN
Inventors: 李勇; 崔积仁; 苗凯
Original assignee: Shandong Urban And Rural Planning And Design Institute Co ltd; Shandong Fuyuan Survey Mapping And Design Co ltd
Current assignee: Shandong Urban And Rural Planning And Design Institute Co ltd; Shandong Fuyuan Survey Mapping And Design Co ltd
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2023-06-16
Anticipated expiration: 2043-04-06
Also published as: CN116067351A

Abstract

The invention discloses a distance measuring instrument for urban and rural planning, which relates to the technical field of urban and rural planning design, wherein the top end of measuring equipment is provided with a measuring machine, the bottom of the measuring machine is connected with the top surface of a balance component, a support component is connected below the balance component, the top end of the balance component is provided with a balance plate, the bottom surface of the balance plate is connected with the top surface of a stress rod, the stress rod is inserted into a limiting block, the outer wall of the limiting block is connected between the inner walls of a sleeve, and the bottom surface of the sleeve is connected with the top surface of a rotating disc, and the distance measuring instrument has the advantages that: the supporting leg is under the drive of rotation gear, outwards expands or inwards contracts, and like this the supporting leg is when outdoor use, and stability is strong, and the drive piece of axis of rotation and telescopic machine front end installation is connected simultaneously, drives the piece under the promotion of telescopic machine, can reach forward or backward movement, so forms the drive to metal case internally mounted's rotation gear, and then the supporting leg reaches the effect of stable support under the control of telescopic machine.

Description

Distance measuring instrument for urban and rural planning

Technical Field

The invention relates to the technical field of urban and rural planning and design, in particular to a distance measuring instrument for urban and rural planning.

Background

With the development of society, city and country construction are also continuously developed, different building engineering tools are required to be used in the development and construction process, and measuring devices are required to be used in the design drawing process to design according to the measured dimensions.

At present, the existing urban and rural planning and design measuring device is complex in structure and is of an integrated structure, the surveyors are most annoyed outdoors, whether the horizontal reference can be quickly found, most measuring instruments on the market are provided with a horizontal scale on the surface, the calibration of the horizontal reference is assisted, and therefore the workload of measurement is increased.

Disclosure of Invention

The invention aims to provide a distance measuring instrument for urban and rural planning, which solves the problems in the background technology, and provides the following technical scheme: the utility model provides a distance measuring apparatu is used in urban and rural planning, includes measuring equipment, the measuring equipment top sets up to the measuring machine, the measuring machine bottom is connected in balance subassembly top surface, the balance subassembly below is connected with supporting component, the balance subassembly top is provided with the balance board, and the balance board bottom surface is connected in atress pole top surface, the atress pole is pegged graft in the inside of stopper, the outer wall connection of stopper is between the sleeve inner wall, the sleeve bottom surface is connected in the top surface of rolling disc, fixed block and movable block are installed to telescopic inside bottom surface, all install the rolling ball between fixed block and the movable block, the supporting component top sets up to the linkage subassembly, and the linkage subassembly side is connected with drive assembly, the supporting component below is located the linkage subassembly both sides and all is connected with the supporting leg.

As a further aspect of the invention: the telescopic tube is arranged on the front surface of the measuring machine, the sightseeing lens is inserted in the telescopic tube, the eyeshade is arranged on the back surface of the measuring machine, the scarf joint groove is formed in the side surface of the measuring machine, the shaft lever is arranged between the top surface and the bottom surface of the scarf joint groove, the handle is sleeved on the periphery of the shaft lever, the telescopic rod is connected to the inner portion of the middle end of the handle, and the connecting hole is formed in the position, close to one end of the shaft lever, of the handle.

As a further aspect of the invention: the non-fixed connection between the top surface of balance board and the bottom surface of measuring machine, balance board top surface and bottom surface are established to circular-arc along the limit, the atress pole is provided with two, the atress pole top is circular-arc, two sets of round holes have been seted up to inside the stopper, the cross-section diameter of atress pole middle-end is equal with the inner wall cross-section diameter size of round hole.

As a further aspect of the invention: the utility model discloses a movable block, including fixed block, movable block, fixed block, movable block both sides face and movable block, the stopper is whole to be the cuboid, the rectangular channel has been seted up to the sleeve inside, and non-fixed joint between rectangular channel and the stopper, rotate between movable block top surface and the sleeve bottom surface and be connected, the fixed block is provided with two sets of, and the fixed block is close to movable block one side and all establishes to the tangent plane, the rigid coupling between the back of fixed block and the rectangular channel inner wall, movable block both sides face all sets up the inclined plane, swing joint between movable block bottom surface and the movable block top surface, the roll ball quantity is two, and is located the movable block both sides side respectively.

As a further aspect of the invention: the sleeve top surface is connected with the guard bar, the guard bar is provided with a plurality of, the guard bar top is higher than atress pole top, and the guard bar top is less than balance plate top surface, be connected between the bottom surface of stopper and fixed block and the movable block top surface.

Through the technical scheme, the following technical effects can be achieved: the top surface of balance board and the bottom surface of measuring machine are connected steadily, and the balance board can make the measuring machine stably install in the measuring equipment bottom under the restriction of guard bar, and non-fixed connection between guard bar and the balance board simultaneously, and the coast of balance board top surface and bottom surface all sets up to the arc, and later stage can not cause horizontal calibration's influence to the measuring machine between balance board and the guard bar when taking place the slope like this.

As a further aspect of the invention: the linkage subassembly top surface is connected with the protective housing, and fixed connection between the inside bottom surface of protective housing and the rolling disc bottom surface, and protective housing top surface lock joint has the guard plate, the circular slot has been seted up at the guard plate center, be connected between the inner wall in circular slot and the telescopic outer wall.

As a further aspect of the invention: the linkage assembly is characterized in that a metal box is arranged on the periphery of the linkage assembly, rotating holes are formed in two sides of the metal box, rotating gears are mounted in the metal box, rotating shafts are mounted on two sides of each rotating gear, the rotating holes are not fixedly connected with the rotating shafts, and connecting buckles are welded on the side faces of the metal box.

As a further aspect of the invention: the driving assembly comprises a telescopic machine, a driving block connected with the front end of the telescopic machine and a linkage plate connected between the driving block and the top end of the supporting leg, wherein the connecting buckle is not fixedly connected with the telescopic machine, the driving block is rotationally connected with the linkage plate, and one end, far away from the driving block, of the linkage plate is sleeved at the front end of the rotating shaft.

Through the technical scheme, the following technical effects can be achieved: the linkage assembly can enable the supporting legs to expand and contract uniformly, so that the measuring machine is more stable in use, meanwhile, the measuring machine is prevented from excessively large pressure of the supporting legs, inclined collapse occurs, the effect of protecting the measuring machine is also achieved, the length of the rotating shaft connected with the driving assembly is larger than that of other three rotating shafts, and the connecting between the measuring machine and the driving assembly is mainly stable.

As a further aspect of the invention: the supporting leg bottom is pegged graft and is had flexible leg, and flexible leg bottom swing joint has the earth plate, the supporting leg all cup joints at the axis of rotation front end through the synchronizing hole that the top was seted up.

The technical scheme is adopted: compared with the prior art, the invention has the beneficial effects that:

according to the invention, the rectangular groove is formed in the sleeve, the two groups of fixed blocks are fixedly arranged on the inner wall of the rectangular groove, the movable blocks are movably arranged between the fixed blocks, the positions of the movable blocks are changed in the sleeve according to the inclined direction, the two rolling balls are arranged between the movable blocks and the fixed blocks, the rolling balls are connected with the bottom surfaces of the stress rods, the rolling balls are changed in position according to the distance between the two groups of movable blocks, and the stress rods connected with the top surfaces are positioned on the same horizontal plane when the rolling balls follow the inclination, so that the bottom surfaces of the measuring machine are connected with the top surfaces of the balance plates, and the balance plates enable the whole measuring machine to be horizontally arranged at the top ends of measuring equipment, so that the measuring machine is not disturbed by the flatness of the ground to the accuracy of data measurement when the device is used outdoors.

According to the invention, the metal box is provided with the plurality of groups of rotating holes, the rotating shafts with the same number as the rotating holes extend from the inner parts of the rotating holes, and the inner side surfaces of the rotating shafts are welded on the two side surfaces of the rotating gears, so that the rotating shafts can be driven to rotate when the rotating gears rotate, the outer rings of the rotating shafts are provided with the plurality of groups of supporting legs which are outwards expanded or inwards contracted under the driving of the rotating gears, so that the supporting legs are strong in stability when being used outdoors, and meanwhile, the rotating shafts are connected with the driving blocks arranged at the front end of the telescopic machine, and the driving blocks can move forwards or backwards under the driving of the telescopic machine, so that the driving of the rotating gears arranged in the metal box is realized, and the supporting legs are stably supported under the control of the telescopic machine.

According to the invention, the grounding plate is movably arranged at the bottom end of the supporting leg, the grounding plate is connected with the telescopic leg inserted into the bottom end of the supporting leg, the length of the supporting leg can be adjusted, and the ground plate increases the contact area with the ground, so that the gripping force on the ground is increased, and the stability is better.

Drawings

FIG. 1 is a schematic perspective view of a measuring apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic front perspective view of a measuring apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic side view of a measuring apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic perspective view illustrating the connection between the balance assembly and the support assembly according to an embodiment of the present invention;

FIG. 5 is a schematic perspective view of a linkage assembly and support leg connection in an embodiment of the present invention;

FIG. 6 is a partially disassembled schematic illustration of a linkage assembly and a drive assembly in accordance with an embodiment of the present invention;

FIG. 7 is a schematic perspective view of a measuring machine according to an embodiment of the present invention;

FIG. 8 is a schematic perspective view of a measuring machine and balance assembly connection in an embodiment of the present invention;

FIG. 9 is a schematic perspective view of a balance assembly according to an embodiment of the present invention;

FIG. 10 is a schematic perspective view illustrating the balance assembly according to an embodiment of the present invention;

fig. 11 is a split perspective view of a linkage assembly according to an embodiment of the present invention.

In the figure: 1. a measuring device; 2. a measuring machine; 21. a telescopic cylinder; 22. a viewing mirror; 23. an eye shield; 24. a scarf joint groove; 241. a shaft lever; 25. a handle; 251. a telescopic rod; 252. a connection hole; 3. a balancing assembly; 31. a balance plate; 32. a force-bearing rod; 33. a limiting block; 331. a round hole; 34. a sleeve; 341. rectangular grooves; 342. a protective rod; 35. a rotating disc; 36. a fixed block; 37. a moving block; 38. a rolling ball; 4. a support assembly; 5. a linkage assembly; 51. a protective box; 52. a protection plate; 521. a circular groove; 53. a metal box; 531. a rotation hole; 54. rotating the gear; 541. a rotating shaft; 55. a connecting buckle; 6. a drive assembly; 61. a telescoping machine; 62. a driving block; 63. a linkage plate; 7. support legs; 71. a telescoping leg; 72. a ground plate; 73. and synchronizing the holes.

Detailed Description

The following describes the embodiments of the present invention further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present invention, but is not intended to limit the present invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

Example 1

Referring to fig. 1 to 11, the present invention provides a technical solution: the utility model provides a distance measuring apparatu is used in urban and rural planning, including measuring equipment 1, measuring equipment 1 top sets up to measuring machine 2, measuring machine 2 bottom is connected in balance assembly 3 top surface, balance assembly 3 below is connected with supporting component 4, balance assembly 3 top is provided with balance plate 31, and balance plate 31 bottom surface is connected in atress pole 32 top surface, atress pole 32 is pegged graft in the inside of stopper 33, the outer wall connection of stopper 33 is between sleeve 34 inner wall, sleeve 34 bottom surface is connected in the top surface of rolling disc 35, fixed block 36 and movable block 37 are installed to the inside bottom surface of sleeve 34, rolling ball 38 is all installed between fixed block 36 and the movable block 37, supporting component 4 top sets up to link assembly 5, and link assembly 5 side is connected with drive assembly 6, supporting component 4 below link assembly 5 both sides all are connected with supporting leg 7.

Referring to fig. 3, the top surface of the balance plate 31 is not fixedly connected with the bottom surface of the measuring machine 2, the top surface and the bottom surface of the balance plate 31 are arc-shaped along edges, two force rods 32 are arranged, the top ends of the force rods 32 are arc-shaped, two groups of round holes 331 are formed in the limiting block 33, the cross-section diameter of the middle end of each force rod 32 is equal to the cross-section diameter of the inner wall of each round hole 331, the limiting block 33 is integrally rectangular, a rectangular groove 341 is formed in the sleeve 34, the rectangular groove 341 is in non-fixed connection with the limiting block 33, the top surface of the rotating disc 35 is rotationally connected with the bottom surface of the sleeve 34, two groups of fixed blocks 36 are arranged, the side surface of each fixed block 36 close to the moving block 37 is provided with a tangent plane, the back surface of each fixed block 36 is fixedly connected with the inner wall of the rectangular groove 341, the two side surfaces of the moving block 37 are inclined surfaces, the bottom surface of the moving block 37 is movably connected with the top surface of the rotating disc 35, the number of rolling balls 38 is two, the two rolling balls are respectively located at two sides of the moving block 37, the top surface of the sleeve 34 is connected with a protecting rod 342, the protecting rod 342 is arranged higher than the top end of the force rod 32, and the top end of the protecting rod 342 is lower than the top end of the protecting rod 342, and is lower than the top surface of the balance plate 31 and is not connected with the top surface of the moving block 37;

in this embodiment, the top surface of the balance plate 31 is stably connected with the bottom surface of the measuring machine 2, the balance plate 31 is limited by the guard bar 342, so that the measuring machine 2 can be stably installed at the bottom end of the measuring device 1, meanwhile, the guard bar 342 is not fixedly connected with the balance plate 31, and edges of the top surface and the bottom surface of the balance plate 31 are arc-shaped, so that the balance plate 31 and the guard bar 342 cannot affect the horizontal calibration of the measuring machine 2 when the balance plate is inclined in the later stage.

When the device is used, the rectangular groove 341 is formed in the sleeve 34, two groups of fixed blocks 36 are fixedly arranged on the inner wall of the rectangular groove 341, the movable block 37 is movably arranged between the fixed blocks 36, the position of the movable block 37 is changed in the sleeve 34 according to the inclined direction, two rolling balls 38 are arranged between the movable block 37 and the fixed blocks 36, the rolling balls 38 are connected with the bottom surfaces of the stress rods 32, the positions of the rolling balls 38 are changed according to the distance between the fixed blocks 36, and the stress rods 32 connected with the top surfaces are positioned on the same horizontal plane when the rolling balls 38 follow the inclination, so that the bottom surfaces of the measuring machine 2 are connected with the top surfaces of the balance plates 31, and the balance plates 31 enable the whole measuring machine 2 to be horizontally arranged at the top ends of the measuring equipment 1, so that the device cannot be disturbed by the flatness of the ground to the accuracy of data measurement when the device is used outdoors.

Example 2

Referring to fig. 5, a protection box 51 is connected to the top surface of the linkage assembly 5, a bottom surface inside the protection box 51 is fixedly connected to the bottom surface of the rotating disc 35, a protection plate 52 is fastened to the top surface of the protection box 51, a circular groove 521 is formed in the center of the protection plate 52, the inner wall of the circular groove 521 is connected to the outer wall of the sleeve 34, a metal box 53 is arranged on the periphery of the linkage assembly 5, rotating holes 531 are formed in two sides of the metal box 53, a rotating gear 54 is mounted in the metal box 53, rotating shafts 541 are mounted on two sides of the rotating gear 54, the rotating holes 531 are not fixedly connected with the rotating shafts 541, a connecting buckle 55 is welded to the side surface of the metal box 53, a driving assembly 6 comprises a telescopic machine 61, a driving block 62 connected to the front end of the telescopic machine 61, and a linkage plate 63 connected to the top end of the supporting leg 7, the connecting buckle 55 is not fixedly connected to the telescopic machine 61, the driving block 62 is connected to the linkage plate 63 in a rotating manner, and one end of the linkage plate 63 far from the driving block 62 is sleeved on the front end of the rotating shaft 541;

in this embodiment, the linkage assembly 5 can make the supporting leg 7 expand and contract uniformly, so that the measuring machine 2 is more stable when in use, meanwhile, the pressure of the measuring machine 2 to the supporting leg 7 is prevented from being too large, the tilting collapse is prevented, the function of protecting the measuring machine 2 is also achieved, the length of the rotating shaft 541 connected with the driving assembly 6 is longer than that of the other three rotating shafts 541, and the connection between the measuring machine 2 and the driving assembly 6 is mainly realized.

When the telescopic support is used, a plurality of groups of rotating holes 531 are formed in two sides of the metal box 53, rotating shafts 541 which are the same as the rotating holes 531 are extended from the interiors of the rotating holes 531, the inner side surfaces of the rotating shafts 541 are welded on two side surfaces of the rotating gears 54, so that the rotating shafts 541 can be driven to rotate when the rotating gears 54 rotate, a plurality of groups of support legs 7 are installed on the outer ring of the rotating shafts 541, the support legs 7 are outwards expanded or inwards contracted under the driving of the rotating gears 54, and therefore, when the support legs 7 are used outdoors, the stability is high, meanwhile, the rotating shafts 541 are connected with driving blocks 62 installed at the front ends of the telescopic machines 61, the driving blocks 62 can move forwards or backwards under the pushing of the telescopic machines 61, and thus the rotating gears 54 internally installed in the metal box 53 are driven, and the support legs 7 are stably supported under the control of the telescopic machines 61.

Example 3

Referring to fig. 6, the bottom ends of the supporting legs 7 are inserted with telescopic legs 71, the bottom ends of the telescopic legs 71 are movably connected with a grounding plate 72, and the supporting legs 7 are sleeved at the front end of a rotating shaft 541 through synchronous holes 73 formed in the top ends;

in this embodiment, the supporting leg 7 is hollow, and a telescopic leg 71 is inserted in the supporting leg, and the telescopic leg 71 is stretched in the hollow groove, so that the length of the supporting leg 7 can be adjusted, and the synchronous hole 73 can be synchronously driven with the linkage assembly 5.

When the ground connection device is used, the grounding plate 72 is movably mounted at the bottom end of the supporting leg 7, the grounding plate 72 is connected with the telescopic leg 71 inserted into the bottom end of the supporting leg 7, the length of the supporting leg 7 can be adjusted, and the grabbing force to the ground is increased.

Working principle: firstly, a rectangular groove 341 is formed in a sleeve 34, two groups of fixed blocks 36 are fixedly mounted on the inner wall of the rectangular groove 341, a moving block 37 is movably mounted between the fixed blocks 36, the moving block 37 changes position in the sleeve 34 according to the inclined direction, two rolling balls 38 are arranged between the moving block 37 and the fixed blocks 36, the rolling balls 38 are connected with the bottom surfaces of the stress rods 32, the rolling balls 38 change positions according to the distance between the two groups of moving blocks 37 and the fixed blocks 36, when the rolling balls 38 follow the inclination, the stress rods 32 connected with the top surfaces are on the same horizontal plane, so that the bottom surfaces of a measuring machine 2 are connected with the top surfaces of a balance plate 31, the balance plate 31 enables the whole measuring machine 2 to be horizontally placed on the top end of the measuring equipment 1, and therefore the device cannot be interfered by the flatness of the ground to the accuracy of data measurement when the device is used outdoors, secondly, a plurality of groups of rotating holes 531 are formed on two sides of the metal box 53, rotating shafts 541 which are the same as the rotating holes 531 are extended from the interiors of the rotating holes 531, the inner side surfaces of the rotating shafts 541 are welded on the two side surfaces of the rotating gears 54, so that the rotating shafts 541 can be driven to rotate when the rotating gears 54 rotate, a plurality of groups of supporting legs 7 are arranged on the outer ring of the rotating shafts 541, the supporting legs 7 are outwards expanded or inwards contracted under the driving of the rotating gears 54, so that the supporting legs 7 have strong stability when being used outdoors, meanwhile, the rotating shafts 541 are connected with driving blocks 62 arranged at the front ends of the telescopic machines 61, the driving blocks 62 can move forwards or backwards under the driving of the telescopic machines 61, thus driving the rotating gears 54 arranged in the metal box 53, and further the supporting legs 7 achieve the function of stable supporting under the control of the telescopic machines 61, the bottom movable mounting of supporting leg 7 has the earth plate 72, and the inside telescopic leg 71 of pegging graft of earth plate 72 and supporting leg 7 bottom is connected, can adjust supporting leg 7 length to the grip to ground increases.

The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, and yet fall within the scope of the invention.

Claims

1. Distance measuring apparatu is used in urban and rural planning, including measuring equipment (1), its characterized in that: the measuring equipment is characterized in that the top end of the measuring equipment (1) is arranged to be a measuring machine (2), the bottom of the measuring machine (2) is connected to the top surface of a balance component (3), a support component (4) is connected below the balance component (3), a balance plate (31) is arranged at the top end of the balance component (3), the bottom surface of the balance plate (31) is connected to the top surface of a stress rod (32), the stress rod (32) is inserted into a limiting block (33), the outer wall of the limiting block (33) is connected between the inner walls of a sleeve (34), the bottom surface of the sleeve (34) is connected to the top surface of a rotating disc (35), a fixed block (36) and a moving block (37) are arranged on the inner bottom surface of the sleeve (34), rolling balls (38) are arranged between the fixed block (36) and the moving block (37), the top end of the support component (4) is arranged to be a linkage component (5), a driving component (6) is connected to the side of the stress rod (5), and the lower side of the support component (4) is connected to both sides of a linkage component (7);

the telescopic device is characterized in that a telescopic cylinder (21) is arranged on the front surface of the measuring machine (2), a sightseeing lens (22) is inserted into the telescopic cylinder (21), an eye cover (23) is arranged on the back surface of the measuring machine (2), an embedding groove (24) is formed in the side surface of the measuring machine (2), a shaft lever (241) is arranged between the top surface and the bottom surface of the embedding groove (24), a handle (25) is sleeved on the periphery of the shaft lever (241), a telescopic rod (251) is connected to the inner portion of the middle end of the handle (25), and a connecting hole (252) is formed in one end, close to the shaft lever (241), of the handle (25);

the top surface of the balance plate (31) is in non-fixed connection with the bottom surface of the measuring machine (2), the edges of the top surface and the bottom surface of the balance plate (31) are arc-shaped, two stress rods (32) are arranged, the top ends of the stress rods (32) are arc-shaped, two groups of round holes (331) are formed in the limiting block (33), and the section diameter of the middle end of the stress rods (32) is equal to the section diameter of the inner wall of the round holes (331);

the limiting block (33) is integrally rectangular, a rectangular groove (341) is formed in the sleeve (34), the rectangular groove (341) is connected with the limiting block (33) in a non-fixed mode, the top surface of the rotating disc (35) is connected with the bottom surface of the sleeve (34) in a rotating mode, two groups of fixed blocks (36) are arranged, one surface, close to the moving block (37), of each fixed block (36) is provided with an inclined surface, the back surface of each fixed block (36) is fixedly connected with the inner wall of the rectangular groove (341), two side surfaces of each moving block (37) are provided with inclined surfaces, the bottom surface of each moving block (37) is movably connected with the top surface of the rotating disc (35), and the number of the rolling balls (38) is two, and the rolling balls are located on two sides of the moving block (37) respectively;

the top surface of sleeve (34) is connected with guard bar (342), guard bar (342) are provided with a plurality of, guard bar (342) top is higher than atress pole (32) top, and guard bar (342) top is lower than balance plate (31) top surface, be connected between the bottom surface of stopper (33) and fixed block (36) and movable block (37) top surface.

2. The urban and rural planning distance measuring instrument according to claim 1, wherein: the linkage assembly (5) top surface is connected with protective housing (51), and fixed connection between the inside bottom surface of protective housing (51) and rolling disc (35) bottom surface, and protective housing (51) top surface lock joint has guard plate (52), circular slot (521) have been seted up at guard plate (52) center, be connected between the inner wall of circular slot (521) and the outer wall of sleeve (34).

3. The urban and rural planning distance measuring instrument according to claim 2, wherein: the linkage assembly is characterized in that a metal box (53) is arranged on the periphery of the linkage assembly (5), rotating holes (531) are formed in two sides of the metal box (53), rotating gears (54) are arranged in the metal box (53), rotating shafts (541) are arranged on two sides of each rotating gear (54), the rotating holes (531) are not fixedly connected with the rotating shafts (541), and connecting buckles (55) are welded on the side faces of the metal box (53).

4. A urban and rural planning distance measuring instrument according to claim 3, wherein: the driving assembly (6) comprises a telescopic machine (61), a driving block (62) connected with the front end of the telescopic machine (61) and a linkage plate (63) connected between the driving block (62) and the top end of the supporting leg (7), wherein the connecting buckle (55) is not fixedly connected with the telescopic machine (61), the driving block (62) is rotationally connected with the linkage plate (63), and one end, far away from the driving block (62), of the linkage plate (63) is sleeved at the front end of the rotating shaft (541).

5. The urban and rural planning distance measuring instrument according to claim 4, wherein: the bottom of the supporting leg (7) is inserted with a telescopic leg (71), the bottom of the telescopic leg (71) is movably connected with a grounding plate (72), and the supporting leg (7) is sleeved at the front end of the rotating shaft (541) through a synchronous hole (73) formed in the top of the supporting leg.