A road engineering surveying instrument

Abstract

The present invention discloses a road engineering surveying instrument, which belongs to the technical field of surveying instruments. A road engineering surveying instrument comprises a level assembly, the lower end of which is connected to a support block, an exhaust pipe is arranged in the inner cavity of the support block, the lower end of the exhaust pipe is connected to an air pump, and a closed assembly is connected below the air pump. By using an adsorption method to replace the bracket fixing method, the adsorption method can adsorb the equipment on the road surface, guardrail, vehicle and other equipment on the construction site, the operation method is simple, the fixation is reliable, and the use is more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of surveying instruments, and more particularly to a road engineering surveying instrument. Background Art

[0002] Surveying instruments, in simple terms, are instruments and devices designed and manufactured for surveying and mapping operations, such as data collection, processing, and output. In the planning, design, construction, and management stages of engineering construction, various instruments for orientation, distance measurement, angle measurement, height measurement, mapping, and photogrammetry are required for surveying. Laser level is a type of surveying instrument. During road construction, it is often necessary to measure whether the road is level. It uses laser technology to emit a horizontal line, which can generate an accurate horizontal reference line on a platform or other surface.

[0003] The patent with announcement number CN220647332U discloses a surveying instrument, including a surveying instrument body and a base arranged at the bottom of the surveying instrument body, the base is provided with a mounting assembly for mounting the surveying instrument body, the bottom of the base is fixedly connected with a fixing plate, the outer wall of the fixing plate is provided with positioning assemblies around, the bottom of the base is rotatably connected with support legs around, the bottom of the support legs is provided with support rods, and the bottom of the support rods is provided with fixed cones; the utility model relates to the technical field of surveying instruments. The surveying instrument for surveying and mapping engineering can limit the position of the support legs through the positioning assembly, prevent the support legs from loosening, solve the problem that the existing surveying instruments are inconvenient to carry, occupy a large space, are easily damaged during the transfer process, reduce the service life, increase the workload, and thus reduce the efficiency. When the surveying instrument is under construction on the construction site, it is fixed with a bracket. On the one hand, this fixing method takes up more space, and on the other hand, the technicians need to spend a long time to adjust and fix it during use, which is inconvenient. Summary of the invention

[0004] The object of the present invention is to provide a road engineering surveying instrument to solve the problems raised in the above background technology.

[0005] A road engineering surveying instrument comprises a level assembly, wherein the lower end of the level assembly is connected to a support block, an air extraction pipe is arranged in the inner cavity of the support block, the lower end of the air extraction pipe is connected to an air pump, a sealing assembly is connected below the air pump, one end of the sealing assembly is connected to a detection assembly, and a marking assembly is arranged below the level assembly, a plurality of suction cups are arranged around the marking assembly, and the suction cups are connected to the air extraction pipe, and a rubber sealing block is connected to the outer side of the suction cup;

[0006] The closed component includes a circular frame, the upper end surface of the circular frame is fixedly connected to a first driving motor, the output end of the first driving motor is sleeved with a first gear, one side of the first gear is meshed with a second gear, the lower end of the second gear is fixedly connected to a first rotating rod, the outer surface of the first rotating rod is connected to a circular rotating block, the circular rotating block is installed in the circular frame, and the circular rotating block is rotatably connected to the circular frame, a first circular hole is opened at one end of the circular rotating block and the circular frame, the first circular hole opened at one end of the circular frame is fixedly connected to the exhaust pipe, and the lower end of the first rotating rod is fixedly connected to a first conical gear;

[0007] The detection assembly includes a second bevel gear, one end of the second bevel gear is fixedly connected to the second rotating rod, one end of the second rotating rod is fixedly connected to the first rotating block, the outer side of the first rotating block is connected to a circular cavity, the inner cavity of the circular cavity is connected to a sensor, and the inner cavity of the first rotating block is connected to a detection fan, an L-shaped rotating rod is fixedly connected at the axis of the detection fan, and the first rotating block and one end of the circular cavity are provided with a second circular hole, the second circular hole provided at one end of the circular cavity is fixedly connected to the exhaust pipe, the L-shaped rotating rod is connected to the detection fan by passing through the first rotating block, and the first rotating block is rotatably connected to the L-shaped rotating rod.

[0008] Preferably, the first rotating rod is rotatably connected to the circular frame, and the first rotating rod is connected to the circular rotating block by passing through the circular frame, the second rotating rod is rotatably connected to the circular cavity, and the second rotating rod is connected to the first rotating block by passing through the circular cavity.

[0009] Preferably, the number of teeth arranged on the outer side of the first gear is equal to half the number of teeth arranged on the outer side of the second gear, the first bevel gear is meshed with the second bevel gear, a trigger groove is provided at one end of the sensor, and the trigger groove provided at one end of the sensor is matched with the L-shaped rotating rod, when the first rotating block rotates half a circle, the L-shaped rotating rod contacts the trigger groove provided at one end of the sensor, and at this time, when the L-shaped rotating rod is separated from the trigger groove provided at one end of the sensor, the air pump will be started.

[0010] Preferably, the level assembly includes a second drive motor, the output end of the second drive motor is sleeved with a third gear, one end of the third gear is meshed with a fourth gear, the upper end of the fourth gear is connected to a circular rotating block, and the upper end of the circular rotating block is connected to a level detector.

[0011] Preferably, the circular rotating block is rotatably connected to the supporting block, and the number of gear teeth arranged on the outer side of the third gear is equal to one thirty-sixth of the number of gear teeth arranged on the outer side of the fourth gear.

[0012] Preferably, the marking assembly includes a push rod, one end of the push rod is connected to a rack, and a slide groove is opened in the inner cavity of the support block, and the length of the slide groove is equal to twice the length of the rack, one end of the rack is meshed with a first circular gear, the lower end of the first circular gear is connected to a third bevel gear, one side of the third bevel gear is meshed with a fourth bevel gear, one end of the fourth bevel gear is connected to a rotating group, the lower end of the rotating group is connected to a marking mechanism, a marking line is arranged below the marking mechanism, and the marking mechanism is installed in the inner cavity of a rectangular cavity, and the circular rotating rod is rotatably connected to the rectangular cavity, and the rotating group is composed of a driving wheel, a rotating belt and a driven wheel, and the fourth bevel gear passes through the rectangular cavity through the first connecting rod and is rotatably connected to the driving wheel, the outer side of the driving wheel is sleeved with a rotating belt, and the other end of the rotating belt is sleeved with a secondary driven wheel, and the rectangular cavity is communicated with the rubber sealing block.

[0013] Preferably, the marking mechanism includes a circular rotating rod, the outer side of the circular rotating rod is rotatably connected to a circular connecting block, both ends of the circular connecting block are provided with lifting lines, and the lower end surface of the circular connecting block is fixedly connected to a reset spring, the outer side of the reset spring is connected to a circular sliding cavity, the lower end of the circular sliding cavity is slidably connected to a circular moving cavity, a rectangular sliding groove is provided on the outer side of the circular moving cavity, and a lifting block is installed in the inner cavity of the circular moving cavity, the lower end of the lifting block is connected to a double-sided tooth, and the two ends of the double-sided tooth are meshed with second circular gears, the outer side of each of the second circular gears is connected to a fixed block, and the lower end of the circular moving cavity is fixedly connected to a rectangular moving frame.

[0014] Preferably, the lower end of the rotating group is fixedly connected to the circular rotating rod, and the secondary driving wheel is fixedly connected to the circular rotating rod, one end of each lifting line is fixedly connected to the two ends of the lifting block respectively, and the lifting block is connected to the double-sided teeth by passing through the rectangular moving frame.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] 1. In the present invention, the bracket fixing method is replaced by an adsorption method. The adsorption method can adsorb the equipment on the road surface, guardrail, vehicle and other equipment on the construction site. The operation method is simple, the fixation is firm, and the use is more convenient.

[0017] 2. In the present invention, by starting the first driving motor, the first rotating block is driven to rotate half a circle. At this time, the air entering the suction cup will drive the detection fan to rotate, and then drive the L-shaped rotating rod to rotate. When the L-shaped rotating rod is separated from the trigger groove, the air pump and the first driving motor are started to restore the detection component and the sealing component to their original positions, so that the air pump can perform a vacuum operation, and then the surveying instrument can be adsorbed and fixed on the ground for a long time. In this way, the vacuum operation can be performed according to the negative pressure value in the suction cup, thereby improving the energy utilization rate of the air pump, reducing the consumption rate of the power reserve, and thus increasing the use time of the surveying instrument.

[0018] 3. In the present invention, when the laser level is adsorbed and fixed on the platform, the second drive motor is started to drive the third gear to rotate one circle, thereby causing the fourth gear to rotate ten degrees, and then causing the circular rotating block and the horizontal detector to rotate ten degrees, until the laser emitted by the horizontal detector matches the angle required for horizontal marking. In this way, the measuring angle of the laser level can be changed, thereby increasing the practicality of the level.

[0019] 4. In the present invention, the push rod is pushed to drive the circular rotating rod to rotate, thereby allowing the lifting line to perform a contraction operation, and generating a pulling force on the lifting block, and then driving the double-sided teeth to move upward. As the double-sided teeth move, the fixed block will be driven to perform a fixed clamping operation on the marking line. At this time, when the double-sided teeth continue to move, they will drive the marking line to move upward, thereby allowing the circular moving cavity to move along the circular sliding cavity. When the rack moves to the other end of the sliding groove, the push rod is released, and the reset spring is allowed to perform a reset operation. The thrust generated by the reset spring when the marking line is reset will cause the marking line to generate an elastic force, thereby allowing the marking line to mark the road surface. In this way, the road surface can be marked, thereby providing a reference for the next measuring point. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the level assembly of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the closure assembly of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the detection component of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the marking component of the present invention;

[0026] Figure 7It is a schematic diagram of the structure of the crushing component of the present invention.

[0027] Explanation of the reference numerals in the figure: 1. Level assembly; 101. Level detector; 102. First circular rotating block; 103. Fourth gear; 104. Third gear; 105. Second drive motor; 2. Support block; 3. Air extraction pipe; 4. Air pump; 5. Closing assembly; 501. Circular frame; 502. First drive motor; 503. First gear; 504. Second gear; 505. First rotating rod; 506. First bevel gear; 507. Second circular rotating block; 6. Detection assembly; 601. Second bevel gear; 602. Second rotating rod; 603. First rotating block; 604. Circular cavity; 605. Sensor; 606 , detection fan; 607, L-shaped rotating rod; 7, marking assembly; 701, push rod; 702, rack; 703, first circular gear; 704, third bevel gear; 705, fourth bevel gear; 706, rotating group; 708, marking mechanism; 709, marking line; 710, circular rotating rod; 711, circular connecting block; 712, lifting line; 714, circular sliding cavity; 715, reset spring; 716, lifting block; 717, double-sided teeth; 718, second circular gear; 719, fixed block; 720, rectangular moving frame; 721, circular moving cavity; 722, rectangular slide groove; 8, suction cup; 9, rubber sealing block. DETAILED DESCRIPTION

[0028] Example: See Figure 1 and Figure 2 A road engineering surveying instrument includes a level assembly 1, a support block 2 is connected to the lower end of the level assembly 1, an air extraction pipe 3 is arranged in the inner cavity of the support block 2, an air pump 4 is connected to the lower end of the air extraction pipe 3, a sealing assembly 5 is connected below the air pump 4, a detection assembly 6 is connected to one end of the sealing assembly 5, and a marking assembly 7 is arranged below the level assembly 1, a plurality of suction cups 8 are arranged around the marking assembly 7, and the suction cups 8 are connected to the air extraction pipe 3, and a rubber sealing block 9 is connected to the outer side of the suction cup 8;

[0029] See also Figure 4The closing component 5 includes a circular frame 501, a first driving motor 502 is fixedly connected to the upper end surface of the circular frame 501, a first gear 503 is sleeved on the output end of the first driving motor 502, a second gear 504 is meshed on one side of the first gear 503, a first rotating rod 505 is fixedly connected to the lower end of the second gear 504, a second circular rotating block 507 is connected to the outer surface of the first rotating rod 505, the second circular rotating block 507 is installed in the circular frame 501, and the second circular rotating block 507 is rotatably connected to the circular frame 501, the second circular rotating block 507 and one end of the circular frame 501 are provided with a first circular hole, the first circular hole provided at one end of the circular frame 501 is fixedly connected to the exhaust pipe 3, and a first bevel gear 506 is fixedly connected to the lower end of the first rotating rod 505;

[0030] See also Figure 5 The detection component 6 includes a second bevel gear 601, one end of the second bevel gear 601 is fixedly connected to the second rotating rod 602, one end of the second rotating rod 602 is fixedly connected to the first rotating block 603, the outer side of the first rotating block 603 is connected to a circular cavity 604, the inner cavity of the circular cavity 604 is connected to a sensor 605, and the inner cavity of the first rotating block 603 is connected to a detection fan 606, an L-shaped rotating rod 607 is fixedly connected to the axis of the detection fan 606, and the first rotating block 603 and one end of the circular cavity 604 are provided with a second circular hole, the second circular hole provided at one end of the circular cavity 604 is fixedly connected to the exhaust pipe 3, the L-shaped rotating rod 607 is connected to the detection fan 606 by passing through the first rotating block 603, and the first rotating block 603 is rotatably connected to the L-shaped rotating rod 607.

[0031] The first rotating rod 505 is rotatably connected to the circular frame 501 , and is connected to the second circular rotating block 507 by penetrating the circular frame 501 . The second rotating rod 602 is rotatably connected to the circular cavity 604 , and is connected to the first rotating block 603 by penetrating the circular cavity 604 .

[0032] Specifically, by starting the first driving motor 502, the first circular hole opened at one end of the second circular rotating block 507 is separated from the exhaust pipe 3, thereby sealing the exhaust pipe 3 and preventing air backflow, and the rotation of the first driving motor 502 will drive the first rotating rod 505 to rotate, and the first rotating rod 505 will drive the first bevel gear 506 to rotate half a circle, thereby driving the second bevel gear 601 to rotate half a circle, and then driving the first rotating block 603 to rotate half a circle. If the suction cup 8 enters the air, the air will drive the detection fan 606 to rotate, and the rotation of the detection fan 606 will drive the L-shaped rotating rod 607 to rotate. When the L-shaped rotating rod 607 is separated from the trigger groove, the air pump 4 and the first driving motor 502 are started to restore the detection component 6 and the sealing component 5 to their original positions, so that the air pump 4 can perform the exhaust operation, and then the laser level can be adsorbed and fixed on the platform. In this way, the exhaust operation can be performed according to the negative pressure value in the suction cup 8, thereby reducing energy loss and increasing energy utilization.

[0033] The number of teeth arranged on the outside of the first gear 503 is equal to half the number of teeth arranged on the outside of the second gear 504. The first bevel gear 506 is meshed with the second bevel gear 601. A trigger groove is provided at one end of the sensor 605, and the trigger groove provided at one end of the sensor 605 is matched with the L-shaped rotating rod 607. When the first rotating block 603 rotates half a circle, the L-shaped rotating rod 607 contacts the trigger groove provided at one end of the sensor 605. At this time, when the L-shaped rotating rod 607 is separated from the trigger groove provided at one end of the sensor 605, the air pump 4 will be started.

[0034] See also Figure 3 The level assembly 1 includes a second driving motor 105, the output end of the second driving motor 105 is sleeved with a third gear 104, one end of the third gear 104 is meshed with a fourth gear 103, the upper end of the fourth gear 103 is connected to a first circular rotating block 102, and the upper end of the first circular rotating block 102 is connected to a level detector 101.

[0035] The first circular rotating block 102 is rotatably connected to the supporting block 2 , and the number of gear teeth arranged on the outer side of the third gear 104 is equal to one thirty-sixth of the number of gear teeth arranged on the outer side of the fourth gear 103 .

[0036] Specifically, when the laser level is adsorbed and fixed on the platform, the second drive motor 105 is started to drive the third gear 104 to rotate one circle, thereby allowing the fourth gear 103 to rotate ten degrees, and then the first circular rotating block 102 and the horizontal detector 101 to rotate ten degrees, until the laser emitted by the horizontal detector 101 matches the angle required for horizontal marking. In this way, the measuring angle of the laser level can be changed, thereby increasing the practicality of the level.

[0037] See also Figure 6 The marking assembly 7 includes a push rod 701, one end of which is connected to a rack 702, and a slide groove is provided in the inner cavity of the support block 2, and the length of the slide groove is equal to twice the length of the rack 702, one end of the rack 702 is meshed with a first circular gear 703, the lower end of the first circular gear 703 is connected to a third bevel gear 704, one side of the third bevel gear 704 is meshed with a fourth bevel gear 705, one end of the fourth bevel gear 705 is connected to a rotating group 706, and the lower end of the rotating group 706 A marking mechanism 708 is connected, a marking line 709 is arranged below the marking mechanism 708, and the marking mechanism 708 is installed in the inner cavity of the rectangular cavity, and the circular rotating rod 710 is rotationally connected to the rectangular cavity, and the rotating group 706 is composed of a driving wheel, a rotating belt and a driven wheel, and the fourth bevel gear 705 is rotationally connected to the driving wheel through the first connecting rod passing through the rectangular cavity, the outer side of the driving wheel is sleeved with a rotating belt, and the other end of the rotating belt is sleeved with a secondary driven wheel, and the rectangular cavity is connected to the rubber sealing block 9.

[0038] See also Figure 7 The marking mechanism 708 includes a circular rotating rod 710, the outer side of the circular rotating rod 710 is rotatably connected to a circular connecting block 711, both ends of the circular connecting block 711 are provided with lifting lines 712, and the lower end surface of the circular connecting block 711 is fixedly connected to a reset spring 715, the outer side of the reset spring 715 is connected to a circular sliding cavity 714, the lower end of the circular sliding cavity 714 is slidably connected to a circular moving cavity 721, a rectangular sliding groove 722 is provided on the outer side of the circular moving cavity 721, and a lifting block 716 is installed in the inner cavity of the circular moving cavity 721, the lower end of the lifting block 716 is connected to a double-sided tooth 717, and the two ends of the double-sided tooth 717 are meshed with second circular gears 718, the outer side of each second circular gear 718 is connected to a fixed block 719, and the lower end of the circular moving cavity 721 is fixedly connected to a rectangular moving frame 720.

[0039] The lower end of the rotating group 706 is fixedly connected to the circular rotating rod 710, and the secondary driving wheel is fixedly connected to the circular rotating rod 710. One end of each lifting line 712 is respectively fixedly connected to the two ends of the lifting block 716, and the lifting block 716 is connected to the double-sided teeth 717 by passing through the rectangular moving frame 720.

[0040] Specifically, by pushing the push rod 701, the circular rotating rod 710 is driven to rotate, thereby allowing the lifting line 712 to perform a contraction operation, and generating a pulling force on the lifting block 716, and then driving the double-sided tooth 717 to move upward. As the double-sided tooth 717 moves, the fixed block 719 will be driven to fix and clamp the marking line 709. At this time, when the double-sided tooth 717 continues to move, it will drive the marking line 709 to move upward, thereby allowing the circular moving cavity 721 to move along the circular sliding cavity 714. When the rack 702 moves to the other end of the slide groove, the push rod 701 is released, and the reset spring 715 is reset. The marking line 709 will generate an elastic force due to the thrust generated by the reset spring 715 when it is reset, thereby allowing the marking line 709 to mark the road surface. In this way, the road surface can be marked, thereby providing a reference for the next measuring point.

[0041] Working principle: first, place the laser level at the position where the horizontal detection operation is required, and make the rubber sealing block 9 and the suction cup 8 fit with the platform or other plane, and then start the air pump 4 to evacuate the air in the suction cup 8. As the air in the suction cup 8 becomes less and less, the suction cup 8 will gradually fit with the platform until the lower end surface of the suction cup 8 is completely in contact with the platform, so that the laser level is adsorbed and fixed on the platform. At this time, turn off the air pump 4 and start the first drive motor 502, so as to drive the first gear 503 to rotate one circle, and then let the second gear 504 rotate half a circle. As the second gear 504 rotates half a circle, it will drive the first rotating rod 505 and the second circular rotating block 507 to rotate half a circle, so that the first circular hole opened at one end of the second circular rotating block 507 is separated from the exhaust pipe 3, thereby sealing the exhaust pipe 3 and preventing air backflow. The rotation of the first rotating rod 505 will drive The first bevel gear 506 rotates half a circle, thereby driving the second bevel gear 601 to rotate half a circle, and then driving the second rotating rod 602 to rotate half a circle, and the rotation of the second rotating rod 602 will drive the first rotating block 603 to rotate half a circle. At this time, the detection fan 606 is connected with the exhaust pipe 3, and the L-shaped rotating rod 607 is in contact with the trigger groove opened at one end of the sensor 605. If the suction cup 8 enters the air, the air will drive the detection fan 606 to rotate through the exhaust pipe 3, and the rotation of the detection fan 606 will drive the L-shaped rotating rod 607 to rotate, so that the L-shaped rotating rod 607 moves along the trigger groove, and when the L-shaped rotating rod 607 is separated from the trigger groove, the air pump 4 is started. When the air pump 4 is started, the first driving motor 502 is started, and the detection component 6 and the sealing component 5 are restored to their original positions, so that the air pump 4 performs the exhaust operation, and then the laser level is adsorbed and fixed on the platform;

[0042] When the laser level is fixed on the platform by adsorption, the second driving motor 105 is started to drive the third gear 104 to rotate one circle, so that the fourth gear 103 rotates ten degrees, and then the first circular rotating block 102 and the level detector 101 rotate ten degrees, until the laser emitted by the level detector 101 matches the angle required for horizontal marking;

[0043] When the laser emitted by the horizontal detector 101 matches the angle required for horizontal marking, if it is necessary to perform a positioning marking operation on the position for horizontal measurement, the push rod 701 is pushed to move the rack 702 along the slide groove, and the movement of the rack 702 will drive the first circular gear 703 to rotate, thereby driving the third bevel gear 704 to rotate, and then driving the fourth bevel gear 705 to rotate, and the rotation of the fourth bevel gear 705 will drive the driving wheel to rotate, thereby driving the rotating belt to rotate, and then driving the secondary driving wheel to rotate, and the rotation of the secondary driving wheel will drive the circular rotating rod 710 to rotate, so that the lifting line 712 is retracted, thereby generating a pulling force on the lifting block 716, and the lifting block 716 will move upward along the rectangular slide groove 722, thereby driving the double-sided gear 717 to move upward, and the movement of the double-sided gear 717 will drive the second circular gear 71 8 rotates, thereby driving the fixed block 719 to rotate. When the upper end of the double-sided tooth 717 contacts the surface of the rectangular moving frame 720, the fixed block 719 fixes and clamps the marking line 709, and the lifting line 712 continues to retract, which will drive the double-sided tooth 717 to continue to move upward, which will drive the marking line 709 to move upward, thereby driving the rectangular moving frame 720 to move upward, and then the circular moving cavity 721 moves along the circular sliding cavity 714, and the reset spring 715 performs a retraction operation. When the rack 702 moves to the other end of the slide groove, the push rod 701 is released. At this time, the reset spring 715 performs a reset operation, so that the marking component 7 returns to its original position, and the marking line 709 will generate an elastic force due to the thrust generated by the reset spring 715 when it is reset, so that the marking line 709 marks the road surface, and all operations are ended.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A road engineering surveying instrument, comprising a level assembly (1), characterized in that: The lower end of the level assembly (1) is connected to a support block (2), an exhaust pipe (3) is arranged in the inner cavity of the support block (2), the lower end of the exhaust pipe (3) is connected to an air pump (4), a sealing assembly (5) is connected below the air pump (4), one end of the sealing assembly (5) is connected to a detection assembly (6), and a marking assembly (7) is arranged below the level assembly (1), a plurality of suction cups (8) are arranged around the marking assembly (7), and a rubber sealing block (9) is connected to the outer side of the suction cup (8); The closing component (5) comprises a circular frame (501), the upper end surface of the circular frame (501) is fixedly connected to a first driving motor (502), the output end of the first driving motor (502) is sleeved with a first gear (503), one side of the first gear (503) is meshed with a second gear (504), the lower end of the second gear (504) is fixedly connected to a first rotating rod (505), the outer side surface of the first rotating rod (505) is connected to a second circular rotating block (507), and the lower end of the first rotating rod (505) is fixedly connected to a first bevel gear (506); The detection assembly (6) comprises a second bevel gear (601), one end of the second bevel gear (601) is fixedly connected to a second rotating rod (602), one end of the second rotating rod (602) is fixedly connected to a first rotating block (603), the outer side of the first rotating block (603) is connected to a circular cavity (604), the inner cavity of the circular cavity (604) is connected to a sensor (605), and the inner cavity of the first rotating block (603) is connected to a detection fan (606), and the axis of the detection fan (606) is fixedly connected to an L-shaped rotating rod (607); The first rotating rod (505) is rotatably connected to the circular frame (501), and the first rotating rod (505) is connected to the second circular rotating block (507) by penetrating the circular frame (501), the second rotating rod (602) is rotatably connected to the circular cavity (604), and the second rotating rod (602) is connected to the first rotating block (603) by penetrating the circular cavity (604); The number of teeth arranged on the outer side of the first gear (503) is equal to half the number of teeth arranged on the outer side of the second gear (504); the first bevel gear (506) is meshed with the second bevel gear (601); a trigger groove is provided at one end of the sensor (605); and the trigger groove provided at one end of the sensor (605) is matched with the L-shaped rotating rod (607).

2. A road engineering surveying and mapping instrument according to claim 1, characterized in that: The level assembly (1) comprises a second drive motor (105), the output end of the second drive motor (105) is sleeved with a third gear (104), one end of the third gear (104) is meshed with a fourth gear (103), the upper end of the fourth gear (103) is connected to a first circular rotating block (102), and the upper end of the first circular rotating block (102) is connected to a level detector (101).

3. A road engineering surveying and mapping instrument according to claim 2, characterized in that: The first circular rotating block (102) is rotatably connected to the supporting block (2), and the number of gear teeth arranged on the outer side of the third gear (104) is equal to one thirty-sixth of the number of gear teeth arranged on the outer side of the fourth gear (103).

4. A road engineering surveying and mapping instrument according to claim 3, characterized in that: The marking assembly (7) comprises a push rod (701), one end of the push rod (701) is connected to a rack (702), one end of the rack (702) is meshed with a first circular gear (703), the lower end of the first circular gear (703) is connected to a third bevel gear (704), one side of the third bevel gear (704) is meshed with a fourth bevel gear (705), one end of the fourth bevel gear (705) is connected to a rotating group (706), the lower end of the rotating group (706) is connected to a marking mechanism (708), and a marking line (709) is provided below the marking mechanism (708).

5. A road engineering surveying and mapping instrument according to claim 4, characterized in that: The marking mechanism (708) comprises a circular rotating rod (710), the outer side of the circular rotating rod (710) is rotatably connected to a circular connecting block (711), both ends of the circular connecting block (711) are provided with lifting lines (712), and the lower end surface of the circular connecting block (711) is fixedly connected to a return spring (715), the outer side of the return spring (715) is connected to a circular sliding cavity (714), and the lower end of the circular sliding cavity (714) is slidably connected to a circular movable cavity (721). A rectangular slide groove (722) is provided on the outer side of the circular movable cavity (721), and a lifting block (716) is installed in the inner cavity of the circular movable cavity (721); the lower end of the lifting block (716) is connected to a double-sided tooth (717), and the two ends of the double-sided tooth (717) are meshed with second circular gears (718); the outer side of each second circular gear (718) is connected to a fixed block (719), and the lower end of the circular movable cavity (721) is fixedly connected to a rectangular movable frame (720).

6. A road engineering surveying and mapping instrument according to claim 5, characterized in that: The lower end of the rotating group (706) is fixedly connected to the circular rotating rod (710), and the secondary driving wheel is fixedly connected to the circular rotating rod (710). The lifting block (716) is connected to the double-sided teeth (717) by penetrating the rectangular moving frame (720).

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