CN115962762A - Positioning and measuring device for city design - Google Patents

Abstract

The invention discloses a positioning and measuring device for urban design, which relates to the technical field of measuring instruments and comprises a base, a total station main body, a measuring telescope, an operating panel and a telescopic bracket, wherein the total station main body is arranged on the upper side of the base. This location measurement device for city design, to urban road, when architectural facilities plan the design, the location measurement device who generally adopts to have the total powerstation main part assists the engineering personnel to carry out the level angle, the vertical angle, functions such as distance and discrepancy in elevation measurement, when pivoted knob drives spacing wheel by straight flange contact operating panel to the arc limit central point contact operating panel of spacing wheel, operating panel can be rotatory under the effect of spring and rotor arm and contract the inboard of recess, at this moment, rotatory apron seals the opening of recess, make the apron can prevent operating panel by the mistake when receiving the collision and extrudeing and press even the extrusion damage, guarantee that operating panel has the effect that the protection is accomodate to inside embedding when using.

Description

Positioning and measuring device for city design

Technical Field

The invention relates to the technical field of measuring instruments, in particular to a positioning and measuring device for urban design.

Background

The specific definition of city design in the building world usually refers to a design work with cities as research objects, which is a design between city planning, landscape architecture and building design. When urban design is carried out, a positioning and measuring device of a total station is generally used, and multi-parameter measurement can be carried out on planned urban roads or building facilities through the positioning and measuring device.

According to a total station for survey and drawing that patent application number is CN201922208935.X, the electronic sunshade mechanism that this patent was add on the total station, the effectual display screen position part that has protected, the overall structure who does not change current total station can be realized, this patent is ingenious has utilized the space between objective and the display screen to add electronic sunshade mechanism, and is with low costs, and it is nimble convenient to use, occupation space not, has prolonged the life of total station, moreover, the steam generator is simple in structure, sunshade mechanism matter is light. Under the condition that the total station display screen is strongly irradiated by light or in light rain, the sunshade mechanism can be started to automatically open the sunshade cloth, so that the effect of shielding light is achieved, the display screen is convenient to watch, and the protection effect of shielding rain and snow can be achieved;

the technical scheme of above-mentioned patent is when using, the side of total powerstation main part has the panel components of display screen, and in the time of actual operation, the display screen can adjust the measurement parameter of total powerstation and conveniently carry out the parameter observation, accomplish the back at parameter adjustment, make things convenient for the staff to measure the operation, when the actual use total powerstation, the body structure as an organic whole of display screen general and total powerstation, make a lot of meeting need add assemblies such as protective cover in the panel components outside of display screen in many times, make the panel components surface of display screen prevent by the maloperation, the protective assembly who adds like this, still can cause operating panel's damage when the protective assembly surface receives collision and extrusion.

Disclosure of Invention

The invention aims to provide a positioning and measuring device for city design, which solves the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a positioning and measuring device for urban design comprises a base, a total station main body, a measuring telescope, an operating panel and a telescopic bracket, wherein the total station main body is installed on the upper side of the base, the measuring telescope is movably connected to the middle of the total station main body, the operating panel is arranged on the surface of the lower side of the total station main body, three groups of telescopic brackets with equal included angle distribution are connected to the bottom of the base, and each telescopic bracket comprises an outer sleeve, an inner sleeve, a bottom pointed cone and a fastening assembly for limiting the outer sleeve and the inner sleeve,

a protection mechanism is arranged on one side, close to an operation panel, of the total station main body, the protection mechanism comprises a groove, a rotating arm, a spring, a knob and a limiting wheel, and the operation panel is butted in the groove in the surface of the total station main body;

the inner wall both sides of recess pass through rotor arm and operating panel's back swivelling joint, be fixed with the spring between operating panel and the recess.

Preferably, the bottom of the total station main body is connected with a knob through a bearing sleeve, the knob penetrates through one end extending into the groove and is fixed with a limiting wheel, and the lower edge of an opening of the groove is connected with a cover plate through a rotating shaft.

Preferably, the measuring telescope comprises an ocular, a buffer sleeve, an objective, a sliding chute, a sliding block, a lens hood, a storage battery, a fan, a rack, a limiting sleeve and a fluted disc, wherein the ocular and the objective are respectively fixed at two ends of the measuring telescope;

the outside of eyepiece is provided with the cushion collar, and the cushion collar adopts the silica gel material.

Preferably, the surface of the measuring telescope, which is close to the objective lens, is provided with a sliding groove, the sliding groove is internally connected with a sliding block, and one side of the sliding block is fixedly provided with a light shield.

Preferably, a storage battery is installed on the inner wall of the light shield, and a fan is arranged on the surface of the storage battery.

Preferably, a rack is arranged on the outer wall of the light shield close to the sliding block, and a limiting sleeve is fixed at the corner of the upper end of the measuring telescope close to one side of the light shield;

the inside of stop collar is connected with the fluted disc through the dwang, and the rack in fluted disc and the lens hood outside is connected for the meshing.

Preferably, the outside of telescopic bracket is provided with strengthening mechanism, strengthening mechanism is including fixed box, gear train, rocking handle, universal joint, lead screw, adapter sleeve, backup pad, spacing arm, buffer bracket and fastening pin, fixed box sets up the upper end outer wall surface at the telescopic bracket outer tube.

Preferably, a gear set is arranged in the fixing box and is formed by vertically meshing and connecting two bevel gears, a rocking handle in butt joint with the bevel gear on one side of the gear set is connected to the outer side of the fixing box, and a universal joint in butt joint with the bevel gear on the other side of the gear set is connected to the lower side of the fixing box.

Preferably, the bottom end of the universal joint is connected with a screw rod, a connecting sleeve is sleeved outside the screw rod, and a rotating shaft is fixed on the outer wall of the connecting sleeve;

the connecting sleeve is movably connected with the upper side reserved groove of the supporting plate through a rotating shaft of the outer wall, and one side of the supporting plate is movably connected with the outer sleeve of the telescopic support through a limiting arm.

Preferably, the guide groove is formed in the lower side of the supporting plate, the guide groove is in sliding connection with the upper end of the buffer frame, an adjusting opening is formed in one side, close to the guide groove, of the supporting plate, and a fastening pin in butt joint with the adjusting opening in the side face of the supporting plate is fixed to one side of the buffer frame.

Compared with the prior art, the invention has the beneficial effects that:

1. when planning and designing urban roads and construction facilities, the positioning and measuring device with a total station main body is generally adopted to assist engineering personnel to measure horizontal angles, vertical angles, distances, height differences and the like, when a rotary knob drives a limiting wheel to contact an operating panel from a straight edge contact operating panel to an arc edge central point of the limiting wheel, the operating panel can rotate and contract to the inner side of a groove under the action of a spring and a rotating arm, at the moment, an opening of the groove is sealed by a rotating cover plate, so that the cover plate can prevent the operating panel from being mistakenly pressed or even extruded and damaged when being collided and extruded, and the operating panel is ensured to have the function of inward embedding, accommodating and protecting when in use;

2. the positioning and measuring device for urban design is generally required to be positioned and measured in a field when urban roads and building facilities are planned, and is required to be placed at an appointed position during measurement, three groups of telescopic supports at the bottom of a base are opened in the specific operation process, a rocking handle is rotated in the forward direction to drive a gear set to be meshed, so that the gear set drives a screw rod to rotate in the forward direction, the screw rod drives a supporting plate and a buffer frame to be abutted against the ground through a connecting sleeve, the stability of the positioning and measuring device can be enhanced through unfolding a reinforcing mechanism under the condition of strong wind outdoors, and the positioning and measuring device can be stably placed on the ground with different heights;

3. the positioning and measuring device for urban design is moved outdoors when the positioning and measuring device is required to be carried, and when a measurement task is carried out in the rainy weather, the object lens can be wetted by the rain along with wind, therefore, the storage battery supplies power to the obliquely arranged fan by opening a switch of the storage battery, and the fan can blow air when in operation, so that raindrops on the front side of the object lens can be blown away by the obliquely arranged fan, the flow direction of air flow on the front side of the object lens is changed by using the air blowing mode, and thus, the object lens can be prevented from being wetted by the raindrops, and the effect of efficient measurement is realized;

4. this positioning measurement device for city design, when using this positioning measurement device in different time quantums, expose the fluted disc in the stop collar outside through manual rotation, make the rack toothing of fluted disc and lens hood outer wall, thereby drive the arc light screen rotation angle of lens hood through the fluted disc, can adjust according to thorn eye highlight position and shelter from the position, make the lens hood carry out the shading protection to different angles, this positioning measurement device uses when outdoor sunlight is sufficient, can adjust to the thorn eye condition of different time quantums, guarantee that the shading protection is more high-efficient and accurate.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic structural view of the telescopic bracket of the present invention in a front view during the contraction process;

fig. 3 is a schematic left-view cross-sectional structural view of a total station body according to the present invention;

fig. 4 is a schematic rear view cross-sectional structure of a total station body according to the present invention;

FIG. 5 is a schematic diagram of a left-view cross-sectional structure of the measuring telescope of the present invention;

FIG. 6 is a front cross-sectional structural view of the reinforcement mechanism of the present invention during deployment;

FIG. 7 is a schematic top view of the operation panel of the present invention;

FIG. 8 is an enlarged view of the structure at A in FIG. 1 according to the present invention.

In the figure: 1. a base; 2. a total station body; 3. a measuring telescope; 31. an eyepiece; 32. a buffer sleeve; 33. an objective lens; 34. a chute; 35. a slider; 36. a light shield; 37. a storage battery; 38. a fan; 39. a rack; 310. a limiting sleeve; 311. a fluted disc; 4. a protection mechanism; 41. a groove; 42. a rotating arm; 43. a spring; 44. a knob; 45. a limiting wheel; 5. an operation panel; 6. a telescopic bracket; 7. a cover plate; 8. a reinforcement mechanism; 81. a fixing box; 82. a gear set; 83. a rocking handle; 84. a universal joint; 85. a screw rod; 86. connecting sleeves; 87. a support plate; 88. a limiting arm; 89. a buffer frame; 810. and (7) a fastening pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 2, fig. 3 and fig. 7, the present invention provides a technical solution: the utility model provides a positioning and measuring device for city design, including base 1, total powerstation main part 2, measure telescope 3, operating panel 5 and telescopic bracket 6, total powerstation main part 2 is installed to the upside of base 1, the middle part swing joint of total powerstation main part 2 has measurement telescope 3, the downside surface of total powerstation main part 2 is provided with operating panel 5, the bottom of base 1 is connected with telescopic bracket 6 that contained angle such as three groups distributes, and telescopic bracket 6 comprises outer tube, interior sleeve pipe, bottom point awl and be used for restricting outer tube and interior sheathed tube fastening components.

A protection mechanism 4 is arranged on one side, close to the operation panel 5, of the total station main body 2, the protection mechanism 4 comprises a groove 41, a rotating arm 42, a spring 43, a knob 44 and a limiting wheel 45, and the operation panel 5 is butted in the groove 41 on the surface of the total station main body 2; both sides of the inner wall of the recess 41 are rotatably connected to the back surface of the operation panel 5 by a rotation arm 42, and a spring 43 is fixed between the operation panel 5 and the recess 41.

During specific implementation, the rotating arm 42 with the inclined structure drives the operation panel 5 to rotate and contract into the groove 41, so that the groove 41 can protect the operation panel 5.

The bottom of the total station main body 2 is connected with a knob 44 through a bearing sleeve, one end of the knob 44 penetrating into the groove 41 is fixed with a limiting wheel 45, the lower edge of an opening of the groove 41 is connected with a cover plate 7 through a rotating shaft, one side of the limiting wheel 45 is of a planar structure, the limiting wheel 45 and the knob 44 are perpendicular to each other, the knob 44 and the limiting wheel 45 are in eccentric butt joint, the maximum distance is formed from the circle center of the knob 44 to the intersection point of the arc edge and the straight edge of the limiting wheel 45, and the minimum distance is formed from the circle center of the knob 44 to the center point of the arc edge of the limiting wheel 45;

please refer to fig. 3, one side of the cover plate 7 is a straight surface and the other side is an arc surface, the cover plate 7 is made of transparent plastic material, a positive magnet is embedded in the straight surface of the cover plate 7, a negative magnet is embedded in the upper side of the total station main body 2 close to the groove 41, when the cover plate 7 rotates around the rotating shaft, the cover plate 7 covers the outer side of the operation panel 5, the cover plate 7 at this time is attracted with the negative magnet arranged on the total station main body 2 through the positive magnet of the straight surface, so that the limitation of the cover plate 7 can be realized, and the cover plate 7 made of transparent plastic material can observe relevant parameters on the display of the operation panel 5.

In specific implementation, please refer to fig. 3 and 7, when planning and designing urban roads and building facilities, a positioning and measuring device with a total station main body 2 is generally adopted to assist engineers in performing functions such as horizontal angle, vertical angle, distance, height difference measurement, and the like, so as to ensure that the urban design for planning and measuring can be optimal, when the positioning and measuring device is used, three sets of telescopic brackets 6 on the lower side of the base 1 are closed, and a power supply of the total station main body 2 of the measuring device is turned off, when the measuring device is transported and carried, the eccentrically-mounted limiting wheel 45 is driven to rotate by the rotating knob 44, so that the circumferential arc surface of the limiting wheel 45 is attached to the back surface of the operating panel 5, because the knob 44 and the limiting wheel 45 are eccentrically-mounted, and the spring 43 capable of being reset and retracted is connected between the groove 41 and the operating panel 5, the rotating knob 44 drives the limiting wheel 45 to contact the operating panel 5 from the straight edge to the arc edge center point of the limiting wheel 45, the operating panel 5 is rotated and retracted to the inner side of the groove 41, and at the rotating cover plate 7 is arranged to the cover plate 7 to prevent the cover plate 7 from being damaged by being pressed by the pressing and the arc surface 7, and the operating panel 5;

on the contrary, when the rotating knob 44 drives the limiting wheel 45 to contact the operation panel 5 from the arc center point to the straight edge of the limiting wheel 45 to contact the operation panel 5, the limiting wheel 45 can extrude the operation panel 5 to rotate around the rotating arm 42 to just face the opening position of the corresponding groove 41, and when the straight edge of the limiting wheel 45 contacts the back surface of the operation panel 5, the operation panel 5 is pulled by the spring 43 to tightly abut against the limiting wheel 45, so that the automatic limiting effect can be achieved, and when the operation panel 5 is manually operated, the placing position of the operation panel 5 can be limited.

The outside of telescopic bracket 6 is provided with strengthening mechanism 8, strengthening mechanism 8 is including fixed box 81, gear train 82, rocking handle 83, universal joint 84, lead screw 85, adapter sleeve 86, backup pad 87, spacing arm 88, buffer bracket 89 and fastening pin 810, fixed box 81 sets up the upper end outer wall surface at telescopic bracket 6 outer tube, the inside of fixed box 81 is provided with gear train 82, gear train 82 is connected to form by two bevel gear vertical meshing, the fixed box 81 outside is connected with rocking handle 83 with gear train 82 one side bevel gear butt joint, fixed box 81 downside is connected with the universal joint 84 with the gear train 82 opposite side bevel gear butt joint.

The bottom end of the universal joint 84 is connected with a screw rod 85, the outer side of the screw rod 85 is sleeved with a connecting sleeve 86, the connecting sleeve 86 and the screw rod 85 are in threaded connection, and a rotating shaft is fixed on the outer wall of the connecting sleeve 86.

In specific implementation, referring to fig. 1, fig. 2, fig. 6 and fig. 8, when planning urban roads and building facilities, location measurement of a site is generally required, and during measurement, the location measurement device needs to be placed at a specified position, in a specific operation process, three groups of telescopic supports 6 at the bottom of the base 1 are opened, and the total station main body 2 is leveled by the base 1, at this time, the rocking handle 83 on one side of the fixing box 81 is rotated forward, so that the rocking handle 83 drives the gear set 82 to be engaged, the gear set 82 drives the universal joint 84 at the output end to drive the screw rod 85 to rotate forward, the screw rod 85 and the connecting sleeve 86 on the upper side of the supporting plate 87 perform thread transmission, and the connecting sleeve 86 is driven to be far away from the fixing box 81;

when the supporting plate 87 moves along with the connecting sleeve 86, the supporting plate 87 is pulled by the limiting arm 88 to change the unfolding angle, the limiting arm 88 can limit the supporting plate 87 at the moment, when the supporting plate 87 is unfolded to a proper angle, the supporting plate 87 can drive the rubber pad at the bottom of the buffer frame 89 to be abutted to the ground, so that the positioning and measuring device is ensured to have a reinforcing and protecting effect when being placed, meanwhile, when a vehicle passes through the buffer frame 89 on the lower side of the supporting plate 87 on the ground, vibration buffering is realized, and under the condition of outdoor strong wind, the positioning and measuring device can be enhanced in stability by the unfolding and reinforcing mechanism 8;

on the contrary, the rocking handle 83 is rotated reversely to drive the screw rod 85 to rotate reversely, so that the supporting plate 87 can be pulled to contract reversely and be folded outside the telescopic bracket 6, and the storage is convenient.

The connecting sleeve 86 is movably connected with the reserved groove on the upper side of the supporting plate 87 through a rotating shaft on the outer wall, and one side of the supporting plate 87 is movably connected with the outer sleeve of the telescopic bracket 6 through a limiting arm 88; the guide way has been seted up to the downside of backup pad 87, and the upper end of guide way and buffer bracket 89 is sliding connection, and the regulation mouth has been seted up to one side that backup pad 87 is close to the guide way, and one side of buffer bracket 89 is fixed with the fastening pin 810 that docks with backup pad 87 side regulation mouth, and the bottom of buffer bracket 89 adopts the rubber material.

In specific implementation, referring to fig. 1, 2 and 6, the supporting plate 87 slides on the upper end of the buffer frame 89 through the guiding slot, and the connecting length between the supporting plate 87 and the buffer frame 89 can be adjusted by using the fastening pin 810 and the locking nut, so that the positioning and measuring device can be adapted to various uneven ground surfaces.

The measuring telescope 3 comprises an ocular 31, a buffer sleeve 32, an objective 33, a chute 34, a sliding block 35, a light shield 36, a storage battery 37, a fan 38, a rack 39, a limit sleeve 310 and a fluted disc 311, wherein the ocular 31 and the objective 33 are respectively fixed at two ends of the measuring telescope 3; a buffer sleeve 32 is arranged on the outer side of the ocular lens 31, and the buffer sleeve 32 is made of silica gel; the surface of the measuring telescope 3 close to the objective lens 33 is provided with a sliding chute 34, the cross section of the sliding chute 34 is of a T-shaped structure, a sliding block 35 is connected inside the sliding chute 34, the sliding block 35 is of an annular structure, the sliding block 35 is in sliding connection with the sliding chute 34, a light shield 36 is fixed on one side of the sliding block 35, the light shield 36 is formed by integrally molding an arc-shaped light shielding plate and a rotating ring, and the rotating ring on one side of the light shield 36 is fixedly connected with the sliding block 35; through the cushion collar 32 that sets up the silica gel material in the outside at eyepiece 31, aim at eyepiece 31 at the eye and observe the time, can prevent because unexpected collision leads to the collision of eye and eyepiece 31.

In specific implementation, referring to fig. 3-5, when the toothed disc 311 is engaged with the rack 39 on the outer side of the light shield 36, the light shield 36 drives the sliding block 35 to slide in the sliding slot 34 on the surface of the measuring telescope 3 through the rotating ring, so that the light shield 36 can be restricted by the sliding slot 34 distributed symmetrically.

The inner wall of the light shield 36 is provided with a storage battery 37, the surface of the storage battery 37 is provided with a fan 38, and the included angle between the axial lead of the fan 38 and the axial lead of the objective lens 33 is 45 degrees.

In specific implementation, please refer to fig. 4 and 5, when planning and designing urban roads and building facilities, the positioning and measuring device generally needs to be carried to move outdoors, and when a measurement task is performed in a rainy weather, when the objective lens 33 is wetted by the rain with wind, the objective lens 33 generally needs to be wiped and cleaned manually, but when the objective lens is wiped by rain repeatedly during measurement, the measurement efficiency is reduced, for this reason, the storage battery 37 supplies power to the obliquely arranged fan 38 by turning on a switch of the storage battery 37, and the fan 38 can blow air during operation, so that the obliquely arranged fan 38 can blow away raindrops on the front side of the objective lens 33, and the flow direction of the air flow on the front side of the objective lens 33 is changed by using the air blowing, and thus the objective lens 33 can be prevented from being wetted by raindrops.

The outer wall of the light shield 36 close to the sliding block 35 is provided with a rack 39, and the corner of the upper end of the measuring telescope 3 close to one side of the light shield 36 is fixed with a limit sleeve 310; the gear plate 311 is connected to the inside of the stop collar 310 through a rotating rod, and the gear plate 311 is meshed with the rack 39 on the outer side of the light shield 36.

In specific implementation, please refer to fig. 3 and 4, when the positioning measurement device is used in different time periods, the fluted disc 311 exposed outside the limiting sleeve 310 is rotated manually, so that the fluted disc 311 is meshed with the rack 39 on the outer wall of the light shield 36, and the rotation angle of the arc light shield of the light shield 36 is driven by the fluted disc 311, so that the shielding direction can be adjusted according to the dazzling highlight direction, so that the light shield 36 can shield different angles, when the positioning measurement device is used in outdoor sunlight, the dazzling conditions in different time periods can be adjusted, and the light shielding is more efficient and accurate.

In summary, when planning urban roads and construction facilities, three sets of telescopic supports 6 at the bottom of the base 1 are opened and placed at a designated position, the total station body 2 is rotated on the base 1, so that the total station body 2 measures a planned area through the measuring telescope 3, and when using the measuring device, a person observes through the eyepiece 31, measures through the focused objective lens 33, and performs parameter setting through the operation panel 5 during measurement, so as to realize the measurement design of the urban roads and the construction facilities through the total station body 2 of the measuring device.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims (10)

1. The utility model provides a positioning and measuring device for urban design, includes base (1), total powerstation main part (2), measures telescope (3), operating panel (5) and telescopic bracket (6), total powerstation main part (2) are installed to the upside of base (1), the middle part swing joint of total powerstation main part (2) has measures telescope (3), the downside surface of total powerstation main part (2) is provided with operating panel (5), the bottom of base (1) is connected with telescopic bracket (6) that contained angle such as three groups distributes, and telescopic bracket (6) comprise outer tube, interior sleeve pipe, bottom point awl and be used for restricting outer tube and interior sheathed tube fastening components, its characterized in that:

a protection mechanism (4) is arranged on one side, close to an operation panel (5), of the total station main body (2), the protection mechanism (4) comprises a groove (41), a rotating arm (42), a spring (43), a knob (44) and a limiting wheel (45), and the operation panel (5) is butted in the groove (41) on the surface of the total station main body (2);

the inner wall both sides of recess (41) are through rotor arm (42) and the back swivelling joint of operating panel (5), be fixed with spring (43) between operating panel (5) and recess (41).

2. The positioning and measuring device for city design according to claim 1, wherein: the total station main part (2) bottom is passed through the bearing housing and is connected with knob (44), knob (44) run through and stretch into the inside one end of recess (41) and be fixed with spacing wheel (45), the opening lower limb of recess (41) is connected with apron (7) through the pivot.

3. The positioning and measuring device for city design according to claim 1, wherein: the measuring telescope (3) comprises an ocular (31), a buffer sleeve (32), an objective (33), a sliding groove (34), a sliding block (35), a light shield (36), a storage battery (37), a fan (38), a rack (39), a limiting sleeve (310) and a fluted disc (311), wherein the ocular (31) and the objective (33) are respectively fixed at two ends of the measuring telescope (3);

the outside of eyepiece (31) is provided with buffer housing (32), and buffer housing (32) adopt the silica gel material.

4. The positioning and measuring device for city design according to claim 3, wherein: the surface of the measuring telescope (3) close to the objective lens (33) is provided with a sliding groove (34), the inside of the sliding groove (34) is connected with a sliding block (35), and one side of the sliding block (35) is fixed with a light shield (36).

5. The positioning and measuring device for city design according to claim 4, wherein: a storage battery (37) is installed on the inner wall of the light shield (36), and a fan (38) is arranged on the surface of the storage battery (37).

6. The positioning and measuring device for city design according to claim 5, wherein: a rack (39) is arranged on the outer wall of the light shield (36) close to the sliding block (35), and a limiting sleeve (310) is fixed at the corner of the upper end of the measuring telescope (3) close to one side of the light shield (36);

the inside of stop collar (310) is connected with fluted disc (311) through the dwang, and fluted disc (311) are connected for the meshing with rack (39) in lens hood (36) outside.

7. The positioning and measuring device for city design according to claim 1, wherein: the outside of telescopic bracket (6) is provided with strengthening mechanism (8), strengthening mechanism (8) are including fixed box (81), gear train (82), rocking handle (83), universal joint (84), lead screw (85), adapter sleeve (86), backup pad (87), spacing arm (88), cushion frame (89) and fastening pin (810), fixed box (81) set up the upper end outer wall surface at telescopic bracket (6) outer tube.

8. The positioning and measuring device for city design according to claim 7, wherein: the inside of fixed box (81) is provided with gear train (82), gear train (82) are connected by two bevel gear vertical meshing and are constituteed, fixed box (81) outside is connected with rocking handle (83) with gear train (82) one side bevel gear butt joint, fixed box (81) downside is connected with universal joint (84) with gear train (82) opposite side bevel gear butt joint.

9. The positioning and measuring device for city design according to claim 8, wherein: the bottom end of the universal joint (84) is connected with a screw rod (85), a connecting sleeve (86) is sleeved outside the screw rod (85), and a rotating shaft is fixed on the outer wall of the connecting sleeve (86);

the connecting sleeve (86) is movably connected with the upper side preformed groove of the supporting plate (87) through a rotating shaft of the outer wall, and one side of the supporting plate (87) is movably connected with an outer sleeve of the telescopic support (6) through a limiting arm (88).

10. The positioning and measuring device for city design according to claim 9, wherein: the guide way has been seted up to the downside of backup pad (87), and the upper end of guide way and buffer frame (89) is sliding connection, the regulation mouth has been seted up to one side that backup pad (87) are close to the guide way, one side of buffer frame (89) is fixed with fastening pin (810) with backup pad (87) side regulation mouth butt joint.

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