CN114136295A

CN114136295A - Accurate durable handheld measuring device for engineering surveying and mapping and surveying and mapping method thereof

Info

Publication number: CN114136295A
Application number: CN202111471494.8A
Authority: CN
Inventors: 董雨晴
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2022-03-04

Abstract

The invention belongs to the technical field of engineering surveying and mapping, and particularly relates to a handheld measuring device for precise and durable engineering surveying and mapping and a surveying and mapping method thereof. According to the dust collection box, the dust collection cover, the dust collection hole, the dust collection pump, the telescopic hose and the dust collection box are arranged, when the measuring instrument is collected into the protection frame, the second telescopic rod is adjusted to enable the dust collection cover to move to the observation hole of the measuring instrument, then the dust collection pump is opened to adsorb dust on the periphery of the observation hole through the dust collection hole in the dust collection cover on the telescopic hose, and then the dust is uniformly discharged into the dust collection box, so that the dust at the observation hole of the placed measuring instrument can be effectively isolated, the measuring instrument is prevented from being corroded, and the service life of the device is prevented from being influenced.

Description

Accurate durable handheld measuring device for engineering surveying and mapping and surveying and mapping method thereof

Technical Field

The invention relates to the technical field of engineering surveying and mapping, in particular to a precise and durable handheld measuring device for engineering surveying and mapping and a surveying and mapping method thereof.

Background

Before large-scale engineering construction, a mapping engineer must measure and draw a topographic map and provide other information data, and then the work of decision making, planning, design and the like can be carried out; in the engineering construction process, various surveying and mapping and measurement are often required to ensure that the engineering construction is carried out strictly according to the scheme. The engineer mostly uses a measuring instrument during surveying and mapping. The measuring instrument brings more convenience to workers in construction operation, and the handheld measuring instrument is most used.

When not using, the existing handheld measuring device is mostly exposed outside, and an engineer carries the outside of the measuring instrument to cause unnecessary loss due to insufficient protection in the carrying process, thereby influencing the use of workers.

Disclosure of Invention

The invention provides a precise and durable handheld measuring device for engineering surveying and mapping, which comprises a protective frame and a mounting block, wherein two sliding ports are formed in the outer walls of two sides of the protective frame, two first telescopic cylinders are fixedly connected to the outer wall of one side of each sliding port, the outer wall of one side of each first telescopic cylinder, which is positioned on one side, is fixedly connected with the same sliding block, limit springs are fixedly connected to the outer walls of one sides of the two sliding blocks at equal distances, a clamping frame is fixedly connected to the outer wall of each limit spring, a self-rotating shaft is connected to the outer wall of the opposite side of each clamping frame through a bearing, a ball is fixedly connected to the outer wall of each self-rotating shaft, two support springs are fixedly connected to the outer walls of two sides of the mounting block, a touch block is fixedly connected to the outer wall of each support spring, two first telescopic rods are fixedly connected to the outer walls of two sides of the mounting block, and the other end of a telescopic link is connected in one side outer wall of touch multitouch, the impartial distance of both sides outer wall of installation piece is opened there is the spout, and ball sliding connection is in the inner wall of spout, the outer wall all around of protective frame has all opened a plurality of flexible mouths, and is located a plurality of flexible intraoral equal swing joint of bottom and has touch multitouch, protective frame's a plurality of stoppers of the equal fixedly connected with of outer wall all around.

Preferably, one side outer wall fixedly connected with two No. two telescopic links of protective frame, and the same suction hood of outer wall fixedly connected with of two No. two telescopic links, and the equipartition distance of one side outer wall of suction hood is opened there is the dust absorption hole.

Preferably, one side outer wall fixedly connected with dust absorption pump of protective frame, one side outer wall of protective frame is opened there is the mounting hole, the inner wall fixedly connected with dust absorption pipe of mounting hole, and the dust absorption end of dust absorption pump passes through the pipe connection in the one end inner wall of dust absorption pipe, the one end inner wall fixedly connected with expansion hose of dust absorption pipe, and expansion hose's the other end is connected with one side outer wall of suction hood.

Preferably, the outer wall of one side of the protection frame is fixedly connected with a first connecting plate, the outer wall of the top of the first connecting plate is fixedly connected with a dust collection box, and the discharge end of the dust collection pump is connected to the inside of the dust collection box through a dust discharge pipe.

Preferably, the same connecting seat of both sides outer wall fixedly connected with of installation piece, and the bottom outer wall fixedly connected with telescopic cylinder No. two of connecting seat, and telescopic cylinder's outer wall fixedly connected with fixed plate No. two, the outer wall equidistance of fixed plate has a plurality of dash boards through hinge connection, and the equipartition distance of one side outer wall of every dash board is opened there is the splitter box.

Preferably, the outer wall of one side of each rain shielding plate is fixedly connected with an air blowing cover, and air blowing holes are formed in the outer wall of one side of each air blowing cover at equal distances.

Preferably, the equal fixedly connected with of one side outer wall of weather shield is No. two connecting plates, and the equal fixedly connected with of the bottom outer wall of every No. two connecting plates machine of making a breath, and the gas end of making a breath of machine of making a breath is connected in the inside of air-blowing cover through the gas-blowing pipe.

Preferably, No. two telescopic cylinder's outer wall swing joint has the slip ring, and the outer wall of slip ring has a plurality of support frames through hinge connection, and the other end outer wall fixed connection of support frame has No. three telescopic links in the one side outer wall of dash board, and the one side outer wall of fixed plate has No. three telescopic links, and the other end of No. three telescopic links is connected in the one side outer wall of slip ring.

Preferably, the both sides outer wall of protective frame has all been opened and has been hidden the mouth, and two both sides outer walls that hide the mouth all are connected with the axis of rotation through the bearing, the outer wall fixedly connected with arc handle of two axis of rotation, the piece is inhaled with the equal fixedly connected with magnetism of one side outer wall that hides the mouth to one side outer wall of arc handle, the equal distance of one side outer wall of two arc handles is opened and is had the groove of holding, two buffer spring of the equal fixedly connected with of inner wall in every groove of holding, the same pressing block of two adjacent buffer spring's outer wall fixedly connected with, the both sides outer wall of installation piece all is connected with the fixed axle through the bearing, the same measuring apparatu of one side outer wall fixedly connected with relatively of two fixed axles, one side outer wall fixedly connected with display instrument of installation piece, the same arc of the both sides outer wall fixedly connected with of installation piece is carried the piece.

The surveying and mapping method of the accurate durable handheld measuring device for engineering surveying and mapping is applied to the accurate durable handheld measuring device for engineering surveying and mapping, and comprises the following steps:

s1: the outer wall of the periphery of the protective frame is provided with a plurality of telescopic openings, when the measuring instrument is retracted after mapping is finished, the first telescopic rod enables the abutting block to move out of the upper telescopic opening, the mounting block is disassembled, the measuring instrument on the mounting block is enabled to move into the protective frame, and the measuring instrument is prevented from being exposed outside;

s2: then the measuring apparatu on the installation piece moves the in-process down, spacing spring on the telescopic cylinder carries on spacingly to the installation piece, the installation piece is at the removal in-process simultaneously, the ball just with the inner wall laminating of the spout on the installation piece, the installation piece is when removing, the ball is rotatory in the axis of rotation, thereby reduce the installation piece at the removal in-process, the wearing and tearing that its outer wall received, move the in-process down at the installation piece, when the flexible mouth that is located the bottom is aimed at to the piece of contradicting, adjust a telescopic link and make the piece of contradicting insert bottom flexible mouth, the measuring apparatu to on the installation piece carries out fixed stay, the while protection frame protects the measuring apparatu, make things convenient for staff's carrying.

The beneficial effects of the invention are as follows:

1. by arranging the protective frame, the first telescopic rod, the touch block, the sliding chute, the limiting spring, the rotating shaft, the ball and the first telescopic cylinder, the peripheral outer wall of the protective frame is provided with a plurality of telescopic openings, when the measuring instrument is retracted after mapping is finished, the first telescopic rod enables the touch block to move out of the upper telescopic opening, the limiting spring on the first telescopic cylinder limits the installation block, meanwhile, the ball is just attached to the inner wall of the sliding chute on the installation block in the moving process of the installation block, when the installation block moves, the ball rotates on the rotating shaft, so that the abrasion of the outer wall of the installation block in the moving process is reduced, when the touch block is aligned with the telescopic opening at the bottom, the first telescopic rod is adjusted to enable the touch block to be inserted into the bottom telescopic opening, the installation block is fixedly supported, the carrying by a worker is facilitated, and the carrying is avoided, the protection is simple, which causes the damage of the measuring instrument, thereby generating unnecessary loss.

2. Through being provided with the suction hood, the dust absorption hole, the dust absorption pump, bellows and dust collection box, when taking in the protective frame to the measuring apparatu, adjust No. two telescopic links and make the suction hood move to the viewing aperture department of measuring apparatu, then open the dust absorption pump and adsorb the peripheral dust of viewing aperture through the dust absorption hole on the suction hood on the bellows, then unified emission is to the dust collection box in, can effectively keep apart the dust of the measuring apparatu viewing aperture department of shelving, prevent that the dust from causing the measuring apparatu to corrode, influence the device's service life.

3. Through being provided with dash board, the splitter box, the air blowing cover, air blowing hole and air blowing machine, when outdoor use measuring apparatu rained, the size through rainfall then adjust No. two telescopic cylinder make dash board remove to suitable position, then the splitter box on the dash board disperses the rainwater and makes the rainwater evenly drop, start the air blowing machine simultaneously and blow to the position of keeping away from the measuring apparatu device through the air blowing hole on the air blowing cover to the rainwater that drops, prevent inside the rainwater gets into the measuring apparatu, make the measuring apparatu cause the short circuit, influence the progress of survey and drawing.

4. Through being provided with the arc handle, buffer spring, press the piece and inhale the piece with magnetism, when using the measuring apparatu to survey and drawing the scene, roll out the arc handle, and the back finger passes the groove of holding on the arc handle, the piece of pressing on the buffer spring offsets the relative power that the groove produced holding, when preventing to use this measuring device for a long time, hold inslot wall and cause the injury to staff's finger, when not using simultaneously, the piece of magnetism that the piece of inhaling on the arc handle was aimed at on the protection frame is inhaled each other to the magnetism, can hide the arc handle, when preventing not using the device, other article of arc handle scraping of exposing, lead to this measuring device to appear colliding with, cause the damage.

Drawings

Fig. 1 is a schematic overall structure diagram of a precise and durable handheld measuring device for engineering surveying and mapping according to the present invention;

FIG. 2 is a schematic side view of a precise and durable handheld measuring device for engineering surveying and mapping according to the present invention;

FIG. 3 is a schematic diagram of the internal components of a precision and robust handheld measurement device for engineering surveying and mapping according to the present invention;

FIG. 4 is a schematic top view of the internal components of a precision and robust handheld metrology device for engineering surveying and mapping according to the present invention;

FIG. 5 is a schematic diagram of a dust collection assembly of a precise and durable handheld measuring device for engineering surveying and mapping according to the present invention;

FIG. 6 is a schematic view of a rain shelter assembly of a precision and durable handheld measuring device for engineering surveying and mapping according to the present invention;

fig. 7 is a schematic view of a portion of the assembly of fig. 2.

In the figure: 1. a protective frame; 2. a limiting block; 3. mounting blocks; 4. a support spring; 5. a first telescopic rod; 6. a contact block; 7. a chute; 8. a first telescopic cylinder; 9. a slider; 10. a limiting spring; 11. clamping the frame; 12. a rotation shaft; 13. a ball bearing; 14. a second telescopic rod; 15. a dust hood; 16. a dust collection hole; 17. a first connecting plate; 18. a dust collection box; 19. a dust suction pump; 20. a dust collection pipe; 21. a flexible hose; 22. a connecting seat; 23. a second telescopic cylinder; 24. a fixing plate; 25. a flashing; 26. a shunt slot; 27. an air-blowing hood; 28. blowing holes; 29. a second connecting plate; 30. a gas blower; 31. blowing a gas pipe; 32. a sliding ring; 33. a support frame; 34. a third telescopic rod; 35. a rotating shaft; 36. an arc-shaped grip; 37. a magnetic block; 38. a buffer spring; 39. a pressing block; 40. a measuring instrument; 41. arc-shaped lifting blocks; 42. a display instrument; 43. and fixing the shaft.

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.

Referring to fig. 1, 3 and 4, a precise and durable handheld measuring device for engineering surveying and mapping comprises a protective frame 1 and a mounting block 3, wherein two sliding ports are respectively formed on the outer walls of the two sides of the protective frame 1, two first telescopic cylinders 8 are respectively fixedly connected to the outer walls of one side of the two sliding ports, the outer wall of one side of each of the two first telescopic cylinders 8 is fixedly connected with the same sliding block 9, one outer wall of one side of each of the two sliding blocks 9 is fixedly connected with a limiting spring 10 at equal distance, the outer wall of each limiting spring 10 is fixedly connected with a clamping frame 11, the outer wall of the opposite side of each clamping frame 11 is connected with a self-rotating shaft 12 through a bearing, the outer wall of each self-rotating shaft 12 is fixedly connected with a ball 13, the outer walls of the two sides of the mounting block 3 are respectively fixedly connected with two supporting springs 4, and the outer wall of each supporting spring 4 is respectively fixedly connected with a touch block 6, the outer walls of two sides of the installation block 3 are fixedly connected with two first telescopic rods 5, the other ends of the first telescopic rods 5 are connected with the outer wall of one side of the touch block 6, the outer walls of two sides of the installation block 3 are equally spaced to form a chute 7, the balls 13 are slidably connected with the inner wall of the chute 7, the peripheral outer wall of the protection frame 1 is provided with a plurality of telescopic openings, the touch block 6 is movably connected in the plurality of telescopic openings at the bottom, the peripheral outer wall of the protection frame 1 is fixedly connected with a plurality of limit blocks 2, the touch block 5, the chute 6, the limit spring 10, the self-rotating shaft 12, the balls 13 and the first telescopic cylinder 8 are arranged, the peripheral outer wall of the protection frame 1 is provided with a plurality of telescopic openings, when the measuring instrument 40 is retracted after surveying and mapping is finished, the first telescopic rod 5 moves the touch block 6 out of the telescopic opening above, and the limit spring 10 on the first telescopic cylinder 8 limits the installation block 3, installation piece 3 is removing the in-process simultaneously, ball 13 just with the inner wall laminating of spout 7 on the installation piece 3, installation piece 3 is when removing, ball 13 is rotatory on axis of rotation 12, thereby reduce installation piece 3 and remove the in-process, the wearing and tearing that its outer wall received, at installation piece 3 in-process that moves down, when conflict piece 6 aims at the flexible mouth that is located the bottom, adjust telescopic link 5 and make conflict piece 6 insert the bottom flexible mouth, carry out fixed stay to installation piece 3, can make things convenient for the staff to carry, when avoiding carrying, the protection is simpler, lead to measuring apparatu 40 to take place the damage, thereby produce the unnecessary loss.

Referring to fig. 1 and 5, the outer wall of one side of the protection frame 1 is fixedly connected with two second expansion links 14, the outer walls of the two second expansion links 14 are fixedly connected with the same dust hood 15, and dust collection holes 16 are formed in the outer wall of one side of the dust hood 15 at equal distances.

Referring to fig. 1 and 5, a dust suction pump 19 is fixedly connected to an outer wall of one side of the protection frame 1, a mounting hole is formed in an outer wall of one side of the protection frame 1, a dust suction pipe 20 is fixedly connected to an inner wall of the mounting hole, a dust suction end of the dust suction pump 19 is connected to an inner wall of one end of the dust suction pipe 20 through a pipeline, a flexible hose 21 is fixedly connected to an inner wall of one end of the dust suction pipe 20, and the other end of the flexible hose 21 is connected to an outer wall of one side of the dust suction hood 15.

Referring to fig. 1 and 5, the first connecting plate 17 is fixedly connected to the outer wall of one side of the protection frame 1, the dust collection box 18 is fixedly connected to the outer wall of the top of the first connecting plate 17, the discharge end of the dust collection pump 19 is connected to the inside of the dust collection box 18 through a dust discharge pipe, the dust collection cover 15, the dust collection hole 16, the dust collection pump 19, the telescopic hose 21 and the dust collection box 18 are arranged, when the measuring instrument 40 is collected into the protection frame 1, the second telescopic rod 14 is adjusted to enable the dust collection cover 15 to move to the observation port of the measuring instrument 40, then the dust collection pump 19 is opened to adsorb dust around the observation port through the dust collection hole 16 on the dust collection cover 15 on the telescopic hose 21, and then the dust is uniformly discharged into the dust collection box 18, so that the dust at the observation port of the placed measuring instrument 40 can be effectively isolated, and the corrosion of the measuring instrument 40 caused by the dust is prevented, and the service life of the device is influenced.

Referring to fig. 1, 2 and 6, the same connecting seat 22 of both sides outer wall fixedly connected with of installation piece 3, and the bottom outer wall fixedly connected with telescopic cylinder 23 No. two of connecting seat 22, and the outer wall fixedly connected with fixed plate 24 of telescopic cylinder 23 No. two, the outer wall equidistance of fixed plate 24 has a plurality of dash boards 25 through hinge connection, and the equipartition distance of one side outer wall of every dash board 25 is opened there is splitter box 26.

Referring to fig. 1 and 2, an air blowing cover 27 is fixedly connected to an outer wall of one side of each rain shielding plate 25, and air blowing holes 28 are formed in the outer wall of one side of each air blowing cover 27 at equal distances.

Referring to fig. 2 and 6, the outer wall of one side of the rain shielding plate 25 is fixedly connected with a second connecting plate 29, the outer wall of the bottom of each second connecting plate 29 is fixedly connected with a blower 30, and the blowing end of the blower 30 is connected to the inside of the blowing hood 27 through a blowing pipe 31.

Referring to fig. 2 and 6, the outer wall of the second telescopic cylinder 23 is movably connected with a sliding ring 32, the outer wall of the sliding ring 32 is connected with a plurality of support frames 33 through hinges, the outer wall of the other end of each support frame 33 is fixedly connected with the outer wall of one side of the rain shielding plate 25, the outer wall of one side of the fixing plate 24 is connected with a third telescopic rod 34, the other end of the third telescopic rod 34 is connected with the outer wall of one side of the sliding ring 32, the rain shielding plate 25, the diversion trench 26, the air blowing cover 27, the air blowing holes 28 and the air blowing machine 30 are arranged, when the outdoor use measuring instrument 40 rains, the second telescopic cylinder 23 is adjusted according to the rainfall to move the rain shielding plate 25 to a proper position, then the diversion trench 26 on the rain shielding plate 25 disperses the rainwater to enable the rainwater to fall off uniformly, and meanwhile, the air blowing machine 30 is started to blow the fallen rainwater away from the position far away from the device 40 through the air blowing holes 28 on the air blowing cover 27, prevent that the rainwater from getting into inside measuring apparatu 40, make measuring apparatu 40 cause the short circuit, influence the progress of survey and drawing.

Referring to fig. 1 and 7, hidden openings are formed in outer walls of two sides of a protection frame 1, two outer walls of two sides of each hidden opening are connected with rotating shafts 35 through bearings, arc-shaped handles 36 are fixedly connected to outer walls of the two rotating shafts 35, magnetic attraction blocks 37 are fixedly connected to an outer wall of one side of each arc-shaped handle 36 and an outer wall of one side of each hidden opening, holding grooves are formed in equal distances in an outer wall of one side of each arc-shaped handle 36, two buffer springs 38 are fixedly connected to an inner wall of each holding groove, the same pressing block 39 is fixedly connected to outer walls of the two adjacent buffer springs 38, fixed shafts 43 are connected to outer walls of two sides of an installation block 3 through bearings, the same measuring instrument 40 is fixedly connected to an outer wall of the opposite side of each fixed shaft 43, a display instrument 42 is fixedly connected to an outer wall of one side of the installation block 3, the same arc-shaped lifting block 41 is fixedly connected to outer walls of two sides of the installation block 3, and the hidden openings are formed by the arc-shaped handles 36, Buffer spring 38, press piece 39 and magnetism and inhale piece 37, when using measuring apparatu 40 to survey and drawing the scene, roll out arc handle 36, then the finger passes the groove of holding on the arc handle 36, press piece 39 on the buffer spring 38 offsets the relative power that the groove produced holding, when preventing to use this measuring device for a long time, hold inslot wall and cause the injury to staff's finger, when not using, the magnetism of piece 37 alignment protection frame on the arc handle 36 is inhaled each other to magnetism and is inhaled piece 37, can hide arc handle 36, when preventing not using the device, other article of arc handle 36 scraping that expose, lead to this measuring device to appear colliding with, cause the damage.

s1: the outer wall of the periphery of the protective frame 1 is provided with a plurality of telescopic openings, when the measuring instrument 40 is retracted after mapping is finished, the first telescopic rod 5 enables the abutting block 6 to move out of the upper telescopic opening, the mounting block 3 is disassembled, the measuring instrument 40 on the mounting block 3 is enabled to move into the protective frame 1, and the measuring instrument 40 is prevented from being exposed outside;

s2: then the measuring apparatu 40 on the installation piece 3 is at the in-process that moves down, spacing spring 10 on the telescopic cylinder 8 carries on spacingly to installation piece 3, installation piece 3 is at the removal in-process simultaneously, ball 13 just with the inner wall laminating of spout 7 on the installation piece 3, installation piece 3 is when removing, ball 13 is rotatory on rotation axis 12, thereby reduce installation piece 3 at the removal in-process, the wearing and tearing that its outer wall received, in the in-process that moves down at installation piece 3, when conflict piece 6 aims at the flexible mouth that is located the bottom, adjust a telescopic link 5 and make conflict piece 6 insert the bottom flexible mouth, carry out fixed stay to measuring apparatu 40 on the installation piece 3, protection frame 1 protects measuring apparatu 40 simultaneously, make things convenient for staff's carrying.

When the rain gauge is used, when the measuring instrument 40 is used for surveying and mapping on site, the arc-shaped handle 36 is rotated out, fingers penetrate through a holding groove on the arc-shaped handle 36, the pressing block 39 on the buffer spring 38 offsets the relative force generated by the holding groove, so that the injury to the fingers of workers due to the inner wall of the holding groove is prevented when the measuring instrument is used for a long time, when the rain gauge is used outdoors, the rain shielding plate 25 is moved to a proper position by adjusting the second telescopic cylinder 23 according to the magnitude of the rain quantity, then the diversion groove 26 on the rain shielding plate 25 disperses the rain water to enable the rain water to fall off uniformly, meanwhile, the air blower 30 is started to blow the fallen rain water to the position far away from the measuring instrument 40 device through the air blowing holes 28 on the air blowing cover 27, so that the rain water is prevented from entering the inside of the measuring instrument 40, the peripheral outer wall of the protective frame 1 is provided with a plurality of telescopic holes, when the measuring instrument 40 is folded after surveying and mapping is finished, the first telescopic rod 5 enables the block 6 to be abutted to move out of the upper telescopic hole, the limiting spring 10 on the first telescopic cylinder 8 limits the installation block 3, meanwhile, in the moving process of the installation block 3, the ball 13 is just attached to the inner wall of the chute 7 on the installation block 3, when the installation block 3 moves, the ball 13 rotates on the rotation shaft 12, so that the abrasion of the outer wall of the installation block 3 in the moving process is reduced, in the moving process of the installation block 3, when the collision block 6 is aligned to the telescopic port at the bottom, the first telescopic rod 5 is adjusted to enable the collision block 6 to be inserted into the telescopic port at the bottom, the installation block 3 is fixedly supported, meanwhile, the magnetic absorption block 37 on the arc-shaped handle 36 is aligned to the magnetic absorption block 37 on the protection frame 1 to absorb each other, the arc-shaped telescopic rod 36 can be hidden, then the second telescopic rod 14 is adjusted to enable the dust absorption cover 15 to move to the observation port of the measuring instrument 40, then the dust absorption pump 19 is opened to absorb the dust around the observation port through the dust absorption hole 16 on the dust absorption cover 15 on the telescopic hose 21, and then discharged into the dust box 18 uniformly.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The accurate durable handheld measuring device for engineering surveying and mapping comprises a protective frame (1) and an installation block (3), and is characterized in that two sliding ports are formed in the outer walls of the two sides of the protective frame (1), two first telescopic cylinders (8) are fixedly connected to the outer wall of one side of each of the two sliding ports, the outer wall of one side of each of the two first telescopic cylinders (8) located on one side is fixedly connected with the same sliding block (9), limiting springs (10) are fixedly connected to the outer walls of one sides of the two sliding blocks (9) at equal distances, a clamping frame (11) is fixedly connected to the outer wall of each limiting spring (10), a rotating shaft (12) is connected to the outer wall of the opposite side of each clamping frame (11) through a bearing, a ball (13) is fixedly connected to the outer wall of each rotating shaft (12), two supporting springs (4) are fixedly connected to the outer walls of the two sides of the installation block (3), and the equal fixedly connected with of outer wall of every supporting spring (4) supports touch multitouch (6), the equal fixedly connected with of both sides outer wall of installation piece (3) two telescopic links (5) No. one, and the other end of a telescopic link (5) connects in the one side outer wall that supports touch multitouch (6), the impartial distance of both sides outer wall of installation piece (3) is opened there is spout (7), ball (13) sliding connection in the inner wall of spout (7), the outer wall all around of protective frame (1) has all opened a plurality of flexible mouths, and is located a plurality of flexible intraoral equal swing joint of bottom and supports touch multitouch (6), protective frame (1) the equal fixedly connected with of outer wall all around has a plurality of stoppers (2).

2. The accurate durable handheld measuring device for engineering surveying and mapping as claimed in claim 1, wherein two second telescopic rods (14) are fixedly connected to an outer wall of one side of the protective frame (1), the same dust hood (15) is fixedly connected to outer walls of the two second telescopic rods (14), and dust suction holes (16) are equally spaced from an outer wall of one side of the dust hood (15).

3. The accurate durable handheld measuring device for engineering surveying and mapping as claimed in claim 2, wherein a dust suction pump (19) is fixedly connected to an outer wall of one side of the protective frame (1), a mounting hole is formed in an outer wall of one side of the protective frame (1), a dust suction pipe (20) is fixedly connected to an inner wall of the mounting hole, a dust suction end of the dust suction pump (19) is connected to an inner wall of one end of the dust suction pipe (20) through a pipeline, a flexible hose (21) is fixedly connected to an inner wall of one end of the dust suction pipe (20), and the other end of the flexible hose (21) is connected to an outer wall of one side of the dust suction hood (15).

4. The hand-held measuring device for precise and durable engineering surveying and mapping as claimed in claim 3, wherein a first connecting plate (17) is fixedly connected to the outer wall of one side of the protective frame (1), a dust collection box (18) is fixedly connected to the outer wall of the top of the first connecting plate (17), and the discharge end of the dust collection pump (19) is connected to the inside of the dust collection box (18) through a dust discharge pipe.

5. The accurate durable handheld measuring device for engineering surveying and mapping as claimed in claim 1, wherein the same connecting seat (22) is fixedly connected to the outer walls of two sides of the mounting block (3), a second telescopic cylinder (23) is fixedly connected to the outer wall of the bottom of the connecting seat (22), a fixing plate (24) is fixedly connected to the outer wall of the second telescopic cylinder (23), a plurality of rain shields (25) are connected to the outer wall of the fixing plate (24) at equal intervals through hinges, and a splitter box (26) is arranged on the outer wall of one side of each rain shield (25) at equal intervals.

6. The hand-held measuring device for precise and durable engineering surveying and mapping as claimed in claim 5, wherein an air blowing cover (27) is fixedly connected to one side outer wall of each rain shielding plate (25), and air blowing holes (28) are formed in one side outer wall of each air blowing cover (27) at equal distances.

7. The accurate durable handheld measuring device for engineering surveying and mapping as claimed in claim 6, wherein a second connecting plate (29) is fixedly connected to an outer wall of one side of the rain shielding plate (25), an air blower (30) is fixedly connected to an outer wall of the bottom of each second connecting plate (29), and an air blowing end of the air blower (30) is connected to the inside of the air blowing cover (27) through an air blowing pipe (31).

8. The accurate durable handheld measuring device for engineering surveying and mapping as claimed in claim 5, wherein the outer wall of the second telescopic cylinder (23) is movably connected with a sliding ring (32), the outer wall of the sliding ring (32) is connected with a plurality of support frames (33) through hinges, the outer wall of the other end of each support frame (33) is fixedly connected with the outer wall of one side of the rain shielding plate (25), the outer wall of one side of the fixing plate (24) is connected with a third telescopic rod (34), and the other end of the third telescopic rod (34) is connected with the outer wall of one side of the sliding ring (32).

9. The accurate and durable handheld measuring device for engineering surveying and mapping as claimed in claim 1, wherein hidden openings are formed in the outer walls of two sides of the protective frame (1), the outer walls of two sides of the two hidden openings are connected with rotating shafts (35) through bearings, the outer walls of two rotating shafts (35) are fixedly connected with arc-shaped handles (36), the outer wall of one side of each arc-shaped handle (36) and the outer wall of one side of the hidden opening are fixedly connected with magnetic blocks (37), the outer walls of one sides of two arc-shaped handles (36) are equally spaced with holding grooves, the inner wall of each holding groove is fixedly connected with two buffer springs (38), the outer walls of two adjacent buffer springs (38) are fixedly connected with the same pressing block (39), the outer walls of two sides of the mounting block (3) are connected with fixed shafts (43) through bearings, the outer wall of the opposite side of two fixed shafts (43) is fixedly connected with the same measuring instrument (40), the outer wall of one side of the mounting block (3) is fixedly connected with a display instrument (42), and the outer walls of two sides of the mounting block (3) are fixedly connected with the same arc-shaped lifting block (41).

10. A surveying method of a precision and durable handheld measuring device for engineering surveying and mapping, which is applied to the precision and durable handheld measuring device for engineering surveying and mapping according to any one of claims 1 to 9, wherein the surveying method comprises the following steps:

s1: the outer wall of the periphery of the protective frame (1) is provided with a plurality of telescopic openings, when the measuring instrument (40) is retracted after mapping is finished, the first telescopic rod (5) enables the contact block (6) to move out of the upper telescopic opening, the mounting block (3) is disassembled, the measuring instrument (40) on the mounting block (3) is enabled to move into the protective frame (1), and the measuring instrument (40) is prevented from being exposed outside;

s2: then, in the process that the measuring instrument (40) on the mounting block (3) moves downwards, the limiting spring (10) on the first telescopic cylinder (8) limits the mounting block (3), meanwhile, in the moving process of the mounting block (3), the ball (13) is just attached to the inner wall of the chute (7) on the mounting block (3), when the mounting block (3) moves, the balls (13) rotate on the rotation shaft (12) so as to lower the mounting block (3) during the movement, the outer wall of the mounting block is worn, when the contact block (6) is aligned with the telescopic opening at the bottom in the process of moving the mounting block (3) downwards, the first telescopic rod (5) is adjusted to enable the contact block (6) to be inserted into the bottom telescopic opening, the measuring instrument (40) on the mounting block (3) is fixedly supported, and meanwhile the protective frame (1) protects the measuring instrument (40), so that the carrying of workers is facilitated.