Engineering surveying pay-off device

Abstract

The invention belongs to the technical field of engineering surveying, and discloses an engineering surveying pay-off device which comprises a shell, a grip is fixedly mounted on the right side of the shell, a battery is mounted in the grip, a conical guide opening is fixedly connected to the left side of the shell, and a control button is fixedly connected to the right side of the upper surface of the shell. And the left side of the upper surface of the shell is clamped with a cover plate, and the sealing performance between the two is good. The driving motor works to drive the small gear to rotate, the small gear drives the large gear to rotate, the large gear drives the driving wheel and the wire roller to rotate, the driving wheel drives the transmission wheel to rotate through the front synchronous belt, the transmission wheel drives the connecting rod and the guide roller to rotate, and the guide groove drives the measuring wire to periodically swing left and right. The measuring wire is tightened or unwound in order, and therefore the problems that when an existing cable is recycled, winding tightness is not uniform, arrangement is not neat, even the cable pressing situation exists, and much inconvenience is brought to follow-up use are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering measurement, and in particular relates to an engineering measurement setting-out device. Background Art

[0002] Construction layout is one of the essential skills for construction management personnel. Every construction project begins with construction positioning, layout and marking, which is related to the success or failure of the entire project. Construction layout is a prior inspection of the positioning of the construction project to ensure that the construction project is carried out safely and smoothly in accordance with the requirements of planning approval, while taking into account the improvement of municipal facilities, improving environmental quality, and avoiding infringement on the interests of adjacent property rights entities.

[0003] There are many tools that need to be carried and used during construction measurement, including levels, distance meters, various rulers, etc. The actual measurement uses a work frame to wind the cable or an ink fountain to lay out and mark the line. However, when the cable is recycled, the winding tightness is uneven, the arrangement is not neat, and there is even a problem of wire pressing, which brings a lot of inconvenience to subsequent use. Moreover, when the ink fountain is retracting the wire, the wire will still come into contact with the ink, so that the retracted wire still has a lot of ink, which not only drips everywhere, but also causes waste. Summary of the invention

[0004] The object of the present invention is to provide an engineering surveying and laying-out device to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical scheme: an engineering measurement and setting-out device, comprising a shell, a handle is fixedly installed on the right side of the shell, a battery is installed inside the handle, a conical guide port is fixedly connected on the left side of the shell, a control button is fixedly connected on the right side of the upper surface of the shell, a cover plate is clamped on the left side of the upper surface of the shell and the sealing between the two is good, a plurality of rotating shafts are rotatably installed on the lower surface of the cover plate, a bevel gear 1 is fixedly connected to the middle part of the rotating shaft, a movable plate is threadedly connected to the upper and lower parts of the plurality of rotating shafts, a sponge is clamped inside the movable plate, a connecting block is fixedly connected to the left side of the front and rear inner walls of the shell, an I-shaped shaft and a transmission shaft are rotatably connected inside the connecting block, a spur gear 1 is fixedly installed in the middle part of the I-shaped shaft, a spur gear 2 is fixedly installed on the left end of the transmission shaft, and a bevel gear 2 is fixedly connected to the right end of the transmission shaft, a transmission mechanism, a guide mechanism, and a driving mechanism are rotatably installed inside the shell, a control mechanism is fixedly installed on the back side of the shell, a partition is fixedly connected to the bottom of the shell, and a scraper ring is fixedly connected to the left side of the partition.

[0006] Preferably, the transmission mechanism includes a transmission rod, two symmetrical bevel gears three are fixedly installed in the middle of the transmission rod, a small synchronous wheel is fixedly connected to the rear of the transmission rod, the bevel gear three is meshed with the bevel gear two, and the transmission rod is rotationally connected to the housing.

[0007] Preferably, the guide mechanism comprises a connecting rod, a guide roller is fixedly connected to the middle of the connecting rod, a guide groove is provided on the curved surface of the guide roller, a transmission wheel is fixedly connected to the front of the connecting rod, and the connecting rod is rotatably connected to the shell.

[0008] Preferably, the driving mechanism includes a main shaft, a wire roller is fixedly installed in the middle part of the main shaft, a driving wheel and a large gear are fixedly installed in the front part of the main shaft, a small gear is meshed on the left side of the large gear, a driving motor is fixedly connected to the middle part of the small gear, a crank is slidably connected to the rear end of the main shaft, a front synchronous belt is transmission-connected between the driving wheel and the transmission wheel, the front end of the main shaft is rotatably connected to the shell, the driving motor is fixedly connected to the bottom of the shell, and the large gear is located on the front side of the driving wheel.

[0009] Preferably, the control mechanism includes a shell sleeve, a sliding plate is slidably connected to the inside of the shell sleeve, two permanent magnets are fixedly connected to the left and right sides of the front side of the sliding plate, a connecting sleeve is fixedly connected to the middle of the front side of the sliding plate, the front end of the connecting sleeve is rotatably connected to a clutch plate, a rear synchronous belt is transmission-connected between the clutch plate and the small synchronous wheel, a limit sleeve fixedly connected to the inner wall of the shell body is provided on the right side of the rear synchronous belt, the shell sleeve is provided with two electromagnets fixedly connected to the back side of the shell, a reset spring is fixedly connected between the sliding plate and the back side of the shell, the shell sleeve is fixedly connected to the back side of the shell, and the connecting sleeve and the clutch plate are both rotatably connected to the main shaft.

[0010] Preferably, a protrusion is provided on the front side of the clutch plate, a groove matching the protrusion is provided on the back side of the wire roller, and both the front side of the clutch plate and the back side of the wire roller are rough.

[0011] Preferably, a through hole is opened in the middle of the partition, the center line of the scraper ring is colinear with the center line of the through hole, the scraper ring is made of elastic material, a wire hole is opened on the left side of the shell, the rotating shaft is rotatably connected to the bottom of the shell and the sealing between the two is good, and the transmission shaft is rotatably connected to the partition.

[0012] The beneficial effects of the present invention are as follows: 1. The present invention drives a small gear to rotate by driving a motor, and the small gear drives a large gear to rotate, and the large gear drives a driving wheel and a wire roller to rotate. The driving wheel drives a transmission wheel to rotate through a front synchronous belt, and the transmission wheel drives a connecting rod and a guide roller to rotate, and drives the measuring wire to swing left and right periodically through a guide groove, so that the measuring wire is tightened or released in an orderly manner, thereby solving the problems of uneven winding tightness, uneven arrangement, and even wire pressing during the recovery of existing cables, which brings a lot of inconvenience to subsequent use.

[0013] 2. The present invention pushes the clutch plate to be in close contact with the back side of the wire roller. When the wire roller rotates, the clutch plate is driven to rotate. The clutch plate drives the small synchronous wheel to rotate through the rear synchronous belt. The small synchronous wheel drives the bevel gear three to rotate through the transmission rod. The bevel gear three drives the bevel gear two and the spur gear two and the transmission shaft to rotate. The spur gear two drives the I-shaped shaft to rotate through the spur gear one. The I-shaped shaft drives the rotating shaft through the bevel gear one, thereby driving the moving plate and the sponge to move to both sides, so that the recovered measuring wire does not contact with the ink. At the same time, the conical guide port scrapes off the dust and impurities contaminated by the released measuring wire, and the scraping ring further scrapes off the ink contaminated by the measuring wire, thereby solving the problem that the wire is still in contact with the ink when the ink fountain is winding up, so that the wound wire carries a large amount of ink, causing waste and environmental pollution, and causing adhesion between the wound wires.

[0014] 3. The present invention can realize manual winding and releasing of the line by driving the main shaft to rotate through the crank. When the driving motor is powered off, the line can be quickly released by pulling one end of the measuring line on the left side of the tapered guide port. The sliding plate is squeezed by sliding the position of the crank to manually engage the clutch plate with the back of the wire roller. The crank is turned to adjust the positions of the two movable plates and the sponge, further improving the use scenarios and application scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structural appearance of the present invention; Figure 2 A half-section schematic diagram of a cover plate of the present invention; Figure 3 A half-section schematic diagram of a shell of the present invention; Figure 4 For the present invention Figure 3 The enlarged schematic diagram at A in the middle; Figure 5 For the present invention Figure 3 The enlarged schematic diagram of point B in the middle; Figure 6 It is a half-section schematic diagram of the control mechanism of the present invention.

[0016] In the figure: 1, housing; 2, handle; 3, battery; 4, conical guide port; 5, control button; 6, cover plate; 7, rotating shaft; 8, bevel gear 1; 9, moving plate; 10, sponge; 11, connecting block; 12, I-shaped shaft; 13, transmission shaft; 14, spur gear 1; 15, spur gear 2; 16, bevel gear 2; 17, transmission mechanism; 171, transmission rod; 172, bevel gear 3; 173, small synchronous wheel; 18, guide mechanism; 181, connecting rod; 182, guide roller; 183, guide groove; 184. Transmission wheel; 19. Driving mechanism; 191. Main shaft; 192. Line roller; 193. Driving wheel; 194. Large gear; 195. Small gear; 196. Driving motor; 197. Crank; 198. Front timing belt; 20. Control mechanism; 201. Shell; 202. Sliding plate; 203. Permanent magnet; 204. Connecting sleeve; 205. Clutch plate; 206. Rear timing belt; 207. Limit sleeve; 208. Electromagnet; 209. Reset spring; 21. Partition; 22. Scraper. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] like Figures 1 to 6As shown, an embodiment of the present invention provides an engineering measurement and setting-out device, including a shell 1, a handle 2 is fixedly installed on the right side of the shell 1, a battery 3 is installed inside the handle 2, a conical guide port 4 is fixedly connected to the left side of the shell 1, a control button 5 is fixedly connected to the right side of the upper surface of the shell 1, a cover plate 6 is clamped on the left side of the upper surface of the shell 1 and the sealing between the two is good, a plurality of rotating shafts 7 are rotatably installed on the lower surface of the cover plate 6, a bevel gear 8 is fixedly connected to the middle part of the rotating shaft 7, a movable plate 9 is threadedly connected to the upper and lower parts of the plurality of rotating shafts 7, a sponge 10 is clamped inside the movable plate 9, and the left sides of the front and rear inner walls of the shell 1 are A connecting block 11 is fixedly connected, and an I-shaped shaft 12 and a transmission shaft 13 are rotatably connected inside the connecting block 11. A spur gear 14 is fixedly installed in the middle of the I-shaped shaft 12, a spur gear 2 15 is fixedly installed on the left end of the transmission shaft 13, and a bevel gear 2 16 is fixedly connected to the right end of the transmission shaft 13. A transmission mechanism 17, a guide mechanism 18, and a driving mechanism 19 are rotatably installed inside the housing 1. A control mechanism 20 is fixedly installed on the back of the housing 1. A partition 21 is fixedly connected to the bottom of the housing 1, and a scraper ring 22 is fixedly connected to the left side of the partition 21. The transmission mechanism 17 includes a transmission rod 171, and the middle part of the transmission rod 171 is fixedly installed. Two symmetrical bevel gears 172 are installed, and a small synchronous wheel 173 is fixedly connected to the rear of the transmission rod 171. The bevel gear 172 is meshed with the bevel gear 16. The transmission rod 171 is rotatably connected to the housing 1. Its function is to push the clutch plate 205 to be in close contact with the back of the line roller 192. When the line roller 192 rotates, it will drive the clutch plate 205 to rotate. The clutch plate 205 drives the small synchronous wheel 173 to rotate through the rear synchronous belt 206. The small synchronous wheel 173 drives the bevel gear 172 to rotate through the transmission rod 171. The bevel gear 172 drives the bevel gear 16, the spur gear 15, and the transmission shaft 13 to rotate. The spur gear 2 15 drives the I-shaped shaft 12 to rotate through the spur gear 1 14, and the I-shaped shaft 12 drives the rotating shaft 7 through the bevel gear 1 8, thereby driving the movable plate 9 and the sponge 10 to move to both sides, so that the recovered measuring wire does not contact with the ink. At the same time, the conical guide port 4 will scrape off the dust and impurities contaminated by the measuring wire, and the scraping circle 22 will further scrape off the ink contaminated by the measuring wire, which solves the problem that the wire will still contact with the ink when the ink fountain is winding up, so that the wound wire still carries a large amount of ink. The ink not only drips everywhere and causes waste, but also pollutes the environment, and causes adhesion between the wound wires.

[0019] Among them, the guiding mechanism 18 includes a connecting rod 181, a guide roller 182 is fixedly connected to the middle part of the connecting rod 181, a guide groove 183 is opened on the curved surface of the guide roller 182, and a transmission wheel 184 is fixedly connected to the front part of the connecting rod 181. The connecting rod 181 is rotatably connected to the shell 1, and its function is to drive the small gear 195 to rotate through the driving motor 196, and the small gear 195 drives the large gear 194 to rotate, and the large gear 194 drives the driving wheel 193 and the line roller 192 to rotate. The driving wheel 193 drives the transmission wheel 184 to rotate through the front synchronous belt 198, and the transmission wheel 184 drives the connecting rod 181 and the guide roller 182 to rotate, and drives the measuring line to swing left and right periodically through the guide groove 183, so that the measuring line is tightened or released in an orderly manner, thereby solving the problems of uneven winding tightness, uneven arrangement, and even wire pressing during the recovery of existing cables, which brings a lot of inconvenience to subsequent use.

[0020] The driving mechanism 19 includes a main shaft 191, a wire roller 192 is fixedly installed in the middle of the main shaft 191, a driving wheel 193 and a large gear 194 are fixedly installed in the front of the main shaft 191, a small gear 195 is meshed on the left side of the large gear 194, a driving motor 196 is fixedly connected to the middle of the small gear 195, a crank 197 is slidably connected to the rear end of the main shaft 191, a front synchronous belt 198 is transmission-connected between the driving wheel 193 and the transmission wheel 184, the front end of the main shaft 191 is rotationally connected to the housing 1, the driving motor 196 is fixedly connected to the bottom of the housing 1, and the large gear 195 is meshed with the left side of the large gear 194. Wheel 194 is located on the front side of the driving wheel 193. Its function is to drive the main shaft 191 to rotate through the crank 197, so as to realize manual winding and releasing of the line. When the driving motor 196 is powered off, one end of the measuring line on the left side of the tapered guide port 4 can be pulled to realize quick release of the line. The sliding plate 202 can be squeezed by sliding the position of the crank 197 to manually complete the engagement of the clutch plate 205 with the back of the line roller 192. The crank 197 can be turned to adjust the position of the two movable plates 9 and the sponge 10, thereby further improving the use scenarios and application scope of the present invention.

[0021] The control mechanism 20 includes a shell 201, a sliding plate 202 is slidably connected inside the shell 201, two permanent magnets 203 are fixedly connected to the left and right sides of the front of the sliding plate 202, a connecting sleeve 204 is fixedly connected to the middle of the front of the sliding plate 202, a clutch plate 205 is rotatably connected to the front end of the connecting sleeve 204, a rear synchronous belt 206 is transmission-connected between the clutch plate 205 and the small synchronous wheel 173, a limiting sleeve 207 fixedly connected to the inner wall of the shell 1 is arranged on the right side of the rear synchronous belt 206, and the shell 201 is provided with two The electromagnet 208 is fixedly connected to the back of the body 1, a return spring 209 is fixedly connected between the sliding plate 202 and the back of the shell 1, the shell 201 is fixedly connected to the back of the shell 1, the connecting sleeve 204 and the clutch plate 205 are both rotatably connected to the main shaft 191, the front of the clutch plate 205 is provided with a protrusion, the back of the line roller 192 is provided with a groove adapted to the protrusion, the front of the clutch plate 205 and the back of the line roller 192 are rough, a through hole is provided in the middle of the partition 21, the center line of the scraper 22 is colinear with the center line of the through hole, and the scraper 22 is made of elastic material The left side of the housing 1 is provided with a wire hole, the rotating shaft 7 is rotatably connected to the bottom of the housing 1 and the sealing between the two is good, and the transmission shaft 13 is rotatably connected to the partition 21. Its function is that when the driving motor 196 works, the electromagnet 208 is energized, so that the permanent magnet 203 is attracted to drive the sliding plate 202 to approach the electromagnet 208 and squeeze the reset spring 209, and the connecting sleeve 204 moves with the sliding plate 202, or the sliding plate 202 is squeezed by the position of the sliding crank 197, so as to push the clutch plate 205 and the wire roller 192 The back side of the line roller 192 is in close contact. When the line roller 192 rotates, it will drive the clutch plate 205 to rotate. The clutch plate 205 drives the small synchronous wheel 173 to rotate through the rear synchronous belt 206. The small synchronous wheel 173 drives the bevel gear three 172 to rotate through the transmission rod 171. The bevel gear three 172 drives the bevel gear two 16 and the spur gear two 15 and the transmission shaft 13 to rotate. The spur gear two 15 drives the I-shaped shaft 12 to rotate through the spur gear one 14. The I-shaped shaft 12 drives the rotating shaft 7 through the bevel gear one 8, thereby driving the positions of the two moving plates 9 and the sponge 10 to change.

[0022] Working principle: Before using the present invention, an appropriate amount of measuring wire is wound on the curved surface of the wire roller 192, and passes through the through hole, the wire hole, and the middle of the tapered guide port 4 in sequence, and the measuring wire contacts the inside of the guide groove 183, remove the cover plate 6, add an appropriate amount of ink to the left inside of the housing 1, and then install the cover plate 6, the two sponges 10 contact each other, and the measuring wire is located between the two sponges 10; Before using the present invention, hold the handle 2 and rotate it so that the sponge 10 fully absorbs the ink. When performing line laying measurement, pull one end of the measuring line on the left side of the conical guide port 4. At the same time, the driving motor 196 drives the small gear 195 to rotate forward, and the small gear 195 drives the large gear 194 to rotate. The large gear 194 drives the driving wheel 193 and the line roller 192 to rotate so as to realize line laying. During the process, the driving wheel 193 drives the transmission wheel 184 to rotate through the front synchronous belt 198, and the transmission wheel 184 drives the connecting rod 181 and the guide roller 182 to rotate, and drives the measuring line to swing left and right periodically through the guide groove 183. When the measuring line passes through the through hole and the scraping circle 22 and enters between the two sponges 10, the ink absorbed by the sponge 10 will be stained on the measuring line. After the measuring line is pulled out to the target length, the driving motor 196 stops working, and the pulled measuring line is used for positioning, laying out and marking. When winding the line, the driving motor 196 drives the pinion 195 to rotate in the opposite direction, drives the line roller 192 and the driving wheel 193 to rotate in the opposite direction, and the driving wheel 193 reverses to drive the transmission wheel 184 to rotate in the opposite direction through the front synchronous belt 198. The transmission wheel 184 drives the connecting rod 181 and the guide roller 182 to rotate in the opposite direction, and drives the measuring line to swing left and right periodically through the guide groove 183, so that the measuring line is wound around the line roller 192 in an orderly manner. When the driving motor 196 is working, the electromagnet 208 is energized, thereby adsorbing the permanent magnet 203 to drive the sliding plate 202 to approach the electromagnet 208 and squeeze the reset spring 209, and the connecting sleeve 204 moves with the sliding plate 202, thereby pushing the clutch plate 205 to make close contact with the back of the line roller 192. When the line roller 192 rotates, it will drive the clutch plate 20 5 rotates, the clutch plate 205 drives the small synchronous wheel 173 to rotate through the rear synchronous belt 206, the small synchronous wheel 173 drives the bevel gear 3 172 to rotate through the transmission rod 171, the bevel gear 3 172 drives the bevel gear 2 16 and the spur gear 2 15 and the transmission shaft 13 to rotate, the spur gear 2 15 drives the I-shaped shaft 12 to rotate through the spur gear 1 14, the I-shaped shaft 12 drives the rotating shaft 7 through the bevel gear 1 8, thereby driving the moving plate 9 and the sponge 10 to move to both sides, when moving to an appropriate distance, the electromagnet 208 is powered off, the reset spring 209 pushes the sliding plate 202 to reset, so that the sponge 10 is not in contact with the measuring line, to prevent the ink from being stained on the measuring line, the conical guide port 4 releases the dust and impurities stained on the measuring line for scraping, and the scraping ring 22 further scrapes the ink stained on the measuring line; By driving the main shaft 191 to rotate with the crank 197, manual winding and unwinding of the line can be achieved. When the driving motor 196 is powered off, quick unwinding of the line can be achieved by pulling one end of the measuring line on the left side of the tapered guide port 4. The sliding plate 202 is squeezed by sliding the position of the crank 197, so that the clutch plate 205 and the back of the line roller 192 are manually engaged. The crank 197 is turned to adjust the position of the two movable plates 9 and the sponge 10.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An engineering surveying and setting-out device, comprising a housing (1), a handle (2) fixedly mounted on the right side of the housing (1), a battery (3) mounted inside the handle (2), a conical guide opening (4) fixedly connected to the left side of the housing (1), a control button (5) fixedly connected to the right side of the upper surface of the housing (1), a cover plate (6) clamped on the left side of the upper surface of the housing (1), and good sealing between the two, characterized in that: A plurality of rotating shafts (7) are rotatably mounted on the lower surface of the cover plate (6); a bevel gear (8) is fixedly connected to the middle of the rotating shaft (7); a movable plate (9) is threadedly connected to the upper and lower parts of the plurality of rotating shafts (7); a sponge (10) is clamped inside the movable plate (9); a connecting block (11) is fixedly connected to the left side of the front and rear inner walls of the housing (1); an I-shaped shaft (12) and a transmission shaft (13) are rotatably connected inside the connecting block (11); the I-shaped shaft (12) and a transmission shaft (13) are fixedly mounted in the middle of the I-shaped shaft (12); A spur gear 1 (14) is installed, a spur gear 2 (15) is fixedly installed on the left end of the transmission shaft (13), a bevel gear 2 (16) is fixedly connected to the right end of the transmission shaft (13), a transmission mechanism (17), a guide mechanism (18), and a drive mechanism (19) are rotatably installed inside the housing (1), a control mechanism (20) is fixedly installed on the back of the housing (1), a partition (21) is fixedly connected to the bottom of the housing (1), and a scraper ring (22) is fixedly connected to the left side of the partition (21).

2. The engineering surveying and setting-out device according to claim 1, characterized in that: The transmission mechanism (17) comprises a transmission rod (171), two symmetrical bevel gears (172) are fixedly mounted in the middle of the transmission rod (171), a small synchronous wheel (173) is fixedly connected to the rear of the transmission rod (171), the bevel gear (172) is meshed with the bevel gear (16), and the transmission rod (171) is rotationally connected to the housing (1).

3. The engineering surveying and setting-out device according to claim 2, characterized in that: The guide mechanism (18) comprises a connecting rod (181), a guide roller (182) is fixedly connected to the middle of the connecting rod (181), a guide groove (183) is provided on the curved surface of the guide roller (182), a transmission wheel (184) is fixedly connected to the front of the connecting rod (181), and the connecting rod (181) is rotatably connected to the housing (1).

4. The engineering surveying and setting-out device according to claim 3, characterized in that: The driving mechanism (19) comprises a main shaft (191), a wire roller (192) is fixedly mounted in the middle of the main shaft (191), a driving wheel (193) and a large gear (194) are fixedly mounted in the front of the main shaft (191), a small gear (195) is meshed on the left side of the large gear (194), a driving motor (196) is fixedly connected in the middle of the small gear (195), a crank (197) is slidably connected to the rear end of the main shaft (191), a front synchronous belt (198) is drivingly connected between the driving wheel (193) and the transmission wheel (184), the front end of the main shaft (191) is rotationally connected to the housing (1), the driving motor (196) is fixedly connected to the bottom of the housing (1), and the large gear (194) is located in front of the driving wheel (193).

5. The engineering surveying and setting-out device according to claim 4, characterized in that: The control mechanism (20) comprises a shell (201), a sliding plate (202) is slidably connected to the inside of the shell (201), two permanent magnets (203) are fixedly connected to the left and right sides of the front of the sliding plate (202), a connecting sleeve (204) is fixedly connected to the middle of the front of the sliding plate (202), a clutch plate (205) is rotatably connected to the front end of the connecting sleeve (204), and a rear synchronous belt (205) is transmission-connected between the clutch plate (205) and the small synchronous wheel (173). 6), a limit sleeve (207) fixedly connected to the inner wall of the shell (1) is provided on the right side of the rear synchronous belt (206), the shell sleeve (201) is provided with two electromagnets (208) fixedly connected to the back of the shell (1), a return spring (209) is fixedly connected between the sliding plate (202) and the back of the shell (1), the shell sleeve (201) is fixedly connected to the back of the shell (1), and the connecting sleeve (204) and the clutch plate (205) are both rotatably connected to the main shaft (191).

6. The engineering surveying and setting-out device according to claim 5, characterized in that: The front side of the clutch plate (205) is provided with a protrusion, and the back side of the wire roller (192) is provided with a groove adapted to the protrusion. Both the front side of the clutch plate (205) and the back side of the wire roller (192) are rough.

7. The engineering surveying and setting-out device according to claim 6, characterized in that: A through hole is provided in the middle of the partition (21); the center line of the scraper ring (22) is colinear with the center line of the through hole; the scraper ring (22) is made of elastic material; a wire hole is provided on the left side surface of the shell (1); the rotating shaft (7) is rotatably connected to the bottom of the shell (1) and the sealing performance between the two is good; and the transmission shaft (13) is rotatably connected to the partition (21).

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