A flatness laser measuring instrument for construction engineering

Abstract

This invention discloses a laser flatness measuring instrument for construction engineering, relating to the field of laser measurement technology. The invention includes: a trailer with a housing mounted on its top surface; a laser emitter fixed to the top surface of the trailer; a square shell fixed to the top surface of the trailer, located to the left of the laser emitter; a frame fixed to the top surface of the trailer, located to the left of the square shell; and a servo motor fixed to the top surface of the frame. The housing covers the laser emitter, and a photosensor continuously receives the offset infrared light emitted by the laser emitter, enabling the laser measuring instrument to measure the flatness of road slopes without being exposed. This avoids the problems of cumbersome and inaccurate road slope flatness measurements caused by impacts and interference from rough and uneven road surfaces.

Description

Technical Field

[0001] This invention belongs to the field of laser measurement, specifically relating to a laser measuring instrument for flatness in building engineering. Background Technology

[0002] During the construction process, it is necessary to level the slopes of the construction road to ensure its flatness. The flatness laser measuring instrument used in construction projects mainly establishes a high-precision laser reference surface and moves to measure the flatness of the slopes of the construction road. It transforms the complex slope conditions of the construction road into an intuitive graphic report, builds a traceable digital archive, and greatly improves construction efficiency and quality reliability.

[0003] Patent CN223940234U discloses a device for rapidly measuring ground flatness, comprising: a worktable and a measuring component. The bottom of the worktable is provided with a rolling part for moving the worktable. The measuring component is used to measure ground flatness and includes a plate-type distance measuring element. The plate-type distance measuring element is provided with a snap-fit ​​part for connecting to the worktable. The plate-type distance measuring element is used for measuring ground flatness, and the output end of the plate-type distance measuring element is provided with a data processing unit. The output end of the data processing unit is provided with an alarm unit. This patent, by setting a plate-type distance measuring element at the bottom of the worktable, allows the moving worktable to measure the distance to the ground through the plate-type distance measuring element and transmit the data to the data processing unit. The data processing unit calculates and processes the data to obtain flatness data. Compared with the operation of using a leveling instrument for multi-point elevation measurement, this design can measure the flatness of an area, avoiding the time-consuming multi-point measurement.

[0004] Because the laser measuring head is exposed during the measurement of the flatness of the uphill and downhill slopes of construction roads, it is easily bumped and interfered with by rough and uneven road objects. This leads to the problem of cumbersome and inaccurate measurement of the flatness of the uphill and downhill slopes of construction roads. At the same time, if the photosensitive sensor is adjusted to level too quickly, the photosensitive sensor will not receive the light source accurately, which will lead to inaccurate measurement data. In addition, dust from the construction road can enter the laser measuring instrument and adhere to the arc plate, which will cause the photosensitive sensor to jam during leveling. Summary of the Invention

[0005] The purpose of this invention is to provide a laser flatness measuring instrument for construction engineering, so as to solve the problem that the laser measuring head is exposed to the outside and is easily bumped and interfered with by rough and uneven road objects, which leads to the cumbersome and inaccurate measurement of the flatness of the uphill and downhill slopes of construction engineering.

[0006] To achieve the above objectives, the present invention provides a planarity laser measuring instrument for building engineering, comprising: a trailer, wherein a housing is provided on the top surface of the trailer; A laser emitter, which is fixed to the top surface of the trailer; A square shell, which is fixed to the top surface of the trailer and is located to the left of the laser emitter; A return frame, which is fixed to the top surface of the trailer and is located on the left side of the square shell; A servo motor, which is fixed to the top surface of the mold frame; A gear shaft 1 is mounted through and rotatably on the lower part of the inner wall of the square shell, and the left end of the gear shaft 1 is fixedly connected to the right end of the output shaft of the servo motor. A second gear shaft is mounted through and rotatably on the upper part of the inner wall of the square shell, and the outer wall of the second gear shaft meshes with the outer wall of the first gear shaft. A plate is fixed to the right side of a gear shaft two. A gear shaft one drives a gear shaft two to rotate in both directions, and the gear shaft two drives the plate to rotate in both directions. A photosensor, which is fixed to the right side of the plate; A level is fixedly installed in the middle of the top surface of the photosensitive sensor. The plate drives the photosensitive sensor to rotate back and forth, and the photosensitive sensor drives the level to rotate back and forth, so that the photosensitive sensor is in a horizontal state. The photosensitive sensor is used to receive infrared light emitted by the laser emitter. The photosensitive sensor is kept horizontal and continuously receives the offset laser signal emitted by the laser emitter 3 to generate flatness measurement data.

[0007] In one possible implementation, the housing includes a casing, a heat dissipation vent, two casing doors, and a warning light. The casing has an access panel on its front side, the heat dissipation vent is located on the right side of both the front and back sides of the casing, the two casing doors are hinged to the inner wall of the access panel, and the warning light is fixedly installed on the left side of the top surface of the casing.

[0008] In one possible implementation, a circular hole is provided on the right side of the trailer top surface, an emitting head is provided on the left side of the laser emitter, and a cross-shaped light cap is fixed to the outer wall of the emitting head of the laser emitter.

[0009] In one possible implementation, a speed reduction device is provided on the outer wall of the gear shaft, the speed reduction device being used to slow down the rotational speed of the photosensitive sensor, and a scraper device is provided on the left side of the speed reduction device, the scraper device being used to scrape off the dust adhering to the speed reduction device.

[0010] In one possible implementation, the deceleration device includes: a ring straight plate, the ring straight plate being fixed to the right side of the outer wall of the gear shaft II; Two rod frames are fixed to the right side of the square shell; Two arc plates are fixed to the outer walls of two rod frames; Two U-shaped plates are fixed to the front and rear ends of the ring straight plate; Rubber rollers are rotatably mounted on the inner walls of two U-shaped plates. The outer walls of the rubber rollers roll in contact with the sides of the two arc plates that are close to each other. A photosensitive sensor continuously receives offset infrared light emitted by a laser emitter and sends the received infrared light offset data to a computer, so that the laser measuring instrument can measure the flatness of the uphill and downhill slopes of the road without being exposed.

[0011] In one possible implementation, the annular straight plate is located between the square shell and the photosensitive sensor, and the two arc plates are located in front of and behind the square shell. The rubber roller slows down the rotation speed of the photosensitive sensor through the friction of rolling with the two arc plates.

[0012] In one possible implementation, two U-shaped plates are fixed to the outer wall of the annular plate, and a spring is fixed to the right side of each of the two U-shaped plates. The U-shaped plates drive the springs to rotate back and forth. A connecting plate is fixed to the right end of each of the two springs. The springs drive the connecting plates to rotate back and forth. The right sides of the two connecting plates are fixedly connected to the left side of the photosensitive sensor. The connecting plates support the photosensitive sensor to rotate back and forth. Under the elastic force of the springs, the springs reciprocate and contract.

[0013] In one possible implementation, the scraper device includes: short columns, which are respectively fixed to the middle of the left side of the two spiral plates; V-shaped frame, the V-shaped frame being fixed to the outer wall of two short columns respectively; A cylinder is fixed at both ends of two V-shaped frames away from the two short columns. The V-shaped frames drive the cylinder to rotate back and forth. The chamfering plates are fixed to the outer walls of four cylinders respectively. The outer walls of the chamfering plates slide in contact with the sides of the two arc plates that are close to each other. The cylinders drive the chamfering plates to rotate back and forth.

[0014] In one possible implementation, the chamfering plate is positioned above and below the two rubber rollers, respectively, and is used to scrape off dust adhering to the two curved plates.

[0015] In one possible implementation, a vertical plate is fixed to the left side of each of the two V-shaped frames, and an L-shaped rod is fixed to the right side of each of the two vertical plates. An arc-shaped plate is fixed to the end of each of the four L-shaped rods away from the two vertical plates. The outer walls of the four arc-shaped plates are fixedly connected to the outer walls of the four cylinders. The V-shaped frames drive the vertical plates to rotate back and forth, the vertical plates drive the L-shaped rods to rotate back and forth, the L-shaped rods drive the arc-shaped plates to rotate back and forth, and the arc-shaped plates support the rotation of the cylinders.

[0016] Compared with the prior art, the beneficial effects of the present invention are: (1) This invention uses a trailer, housing, laser emitter, cross light cap, square shell, return frame, servo motor, gear shaft one, gear shaft two, plate and photosensitive sensor in conjunction with a level. The operator calibrates the level. The infrared light emitted by the laser emitter passes through the cross light cap and shines on the photosensitive sensor in a cross shape. Gear shaft one drives gear shaft two to rotate back and forth, gear shaft two drives plate to rotate back and forth, plate drives photosensitive sensor to rotate back and forth, and photosensitive sensor drives level to rotate back and forth, so that the photosensitive sensor is in a horizontal state. The photosensitive sensor continuously receives the offset infrared light emitted by the laser emitter. The photosensitive sensor sends the received infrared light offset data to the computer, so that the laser measuring instrument can measure the flatness of the ups and downs of the road without being exposed. This prevents the laser measuring head from being bumped and interfered with by rough and uneven road objects, which would make the measurement of the flatness of the ups and downs of the road in construction projects cumbersome and inaccurate.

[0017] (2) By setting a deceleration device, the present invention enables the ring straight plate, rod frame, arc plate and U-shaped plate to cooperate with rubber rollers. The rubber rollers roll on the surface of the arc plate. Under the action of friction, the speed of the forward and reverse rotation of the gear shaft II is slowed down, so that the rotation speed of the photosensitive sensor is slowed down, preventing the photosensitive sensor from adjusting the level too quickly, and the photosensitive sensor receiving light source is inaccurate, resulting in inaccurate measurement data.

[0018] (3) By setting a deceleration device, the present invention enables the eccentric plate and the spring to cooperate with the connecting plate. The eccentric plate drives the spring to rotate back and forth, the spring drives the connecting plate to rotate back and forth, and the connecting plate supports the photosensitive sensor to rotate back and forth. Under the elastic force of the spring, the spring reciprocates and contracts, reducing the vibration amplitude when the photosensitive sensor rotates, and preventing the photosensitive sensor from generating strong amplitude, which would cause the photosensitive sensor to receive infrared light poorly.

[0019] (4) The present invention uses a scraper device to make the short column, V-shaped frame and cylindrical column work together with the chamfering plate. The V-shaped frame drives the cylindrical column to rotate back and forth, and the cylindrical column drives the chamfering plate to rotate back and forth. During the rotation, the chamfering plate scrapes off the dust attached to the arc plate to prevent dust from adhering to the arc plate and causing the photosensitive sensor to get stuck.

[0020] (5) The present invention, through the setting of the scraper device, enables the vertical plate and the L-shaped rod to cooperate with the arc plate, the V-shaped frame to drive the vertical plate to rotate back and forth, the vertical plate to drive the L-shaped rod to rotate back and forth, the L-shaped rod to drive the arc plate to rotate back and forth, and the arc plate to support the rotation of the cylinder, preventing the V-shaped frame from deforming during rotation and causing damage to the internal parts of the equipment. Attached Figure Description

[0021] Figure 1 Overall diagram provided for embodiments of this application; Figure 2 Internal component diagrams provided for embodiments of this application; Figure 3A cross-sectional view of the casing provided in an embodiment of this application; Figure 4 A cross-sectional view of a square shell provided in an embodiment of this application; Figure 5 Provided for the embodiments of this application Figure 4 Enlarged view of a portion of point A in the middle; Figure 6 A diagram of a speed reduction device provided in an embodiment of this application; Figure 7 Provided for the embodiments of this application Figure 6 Enlarged view of a section at point B in the middle; Figure 8 A diagram of the scraper device provided in an embodiment of this application; Figure 9 Provided for the embodiments of this application Figure 8 Enlarged view of a section at point C.

[0022] Explanation of key figure labels: 1. Trailer; 2. Housing; 201. Shell; 202. Heat dissipation vent; 203. Shell door; 204. Warning light; 3. Laser emitter; 4. Crosshair cap; 5. Square shell; 6. Reverse frame; 7. Servo motor; 8. Gear shaft one; 9. Gear shaft two; 10. Plate; 11. Photosensitive sensor; 12. Level; 13. Speed ​​reduction device; 131. Ring straight plate; 132. Pole frame; 133. Arc plate; 134. U-shaped plate; 135. Rubber roller; 136. Reverse plate; 137. Spring; 138. Connecting plate; 14. Scraper device; 141. Short column; 142. V-shaped frame; 143. Cylindrical column; 144. Chamfered plate; 145. Vertical plate; 146. L-shaped rod; 147. Arc plate. Detailed Implementation

[0023] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0024] like Figure 1-9 As shown, one embodiment of the present invention is: a laser flatness measuring instrument for building engineering, comprising: a trailer 1, a circular hole provided on the right side of the top surface of the trailer 1, a housing 2 provided on the top surface of the trailer 1, the housing 2 including a shell 201, a heat dissipation vent 202, two shell doors 203 and a warning light 204, an inspection port provided on the front of the shell 201, the heat dissipation vent 202 being provided on the right side of both the front and back of the shell 201, the two shell doors 203 being hinged to the inner wall of the inspection port of the shell 201, and the warning light 204 being fixedly installed on the left side of the top surface of the shell 201; Laser emitter 3 is fixed on the top surface of trailer 1. A transmitting head is provided on the left side of laser emitter 3. A cross light cap 4 is fixed on the outer wall of the transmitting head of laser emitter 3. Square shell 5 is fixed to the top surface of trailer 1 and is located to the left of laser emitter 3. The return frame 6 is fixed to the top surface of the trailer 1 and is located on the left side of the square shell 5. Servo motor 7 is fixed on the top surface of the return frame 6; Gear shaft 8 is installed through and rotatably on the lower part of the inner wall of the square shell 5. The left end of gear shaft 8 is fixedly connected to the right end of the output shaft of servo motor 7. Gear shaft 29 is mounted through and rotatably on the upper part of the inner wall of the square shell 5, and the outer wall of gear shaft 29 meshes with the outer wall of gear shaft 18. Plate 10 is fixed to the right side of gear shaft 9; Photosensitive sensor 11 is fixed to the right side of the plate 10; Level 12 is fixedly installed in the middle of the top surface of the photosensitive sensor 11; The photosensitive sensor 11 is used to receive infrared light emitted by the laser emitter 3. The photosensitive sensor is kept in a horizontal state and continuously receives the offset laser signal emitted by the laser emitter 3 to generate flatness measurement data. When using this laser measuring instrument, the operator opens the casing door 203 of the housing 2 on a level road surface. The operator calibrates the level 12, ensuring it is level. The casing door 203 is then closed. The operator loads the trailer 1 onto the rear of the vehicle through the round hole in the trailer 1. The vehicle drives to the left onto the construction road, causing the trailer 1 to move to the left. The trailer 1 then moves the housing 201 to the left, which in turn moves the warning light 204 to the left. The warning light 204 is used to alert nearby road construction workers to avoid the area. Recently, trailer 1 moved laser emitter 3 to the left. Heat dissipation vent 202 vents the housing 201, reducing heat buildup inside the housing 2. The housing 2 covers the laser emitter 3, preventing it from being exposed. When trailer 1 moves to a slope on the road, the operator activates laser emitter 3. The emitting head of laser emitter 3 emits infrared light to the left. The infrared light emitted by laser emitter 3 passes through the crosshair cap 4, and the infrared light shines in a cross shape onto the photosensitive sensor 11. When the road slope is uneven, the level 12 is activated. The servo motor 7 is activated, and its output shaft begins to rotate reciprocally. This output shaft drives gear shaft 8 to rotate reciprocally within the square housing 5. Gear shaft 8 then drives gear shaft 9 to rotate reciprocally within the square housing 5. Gear shaft 9 further drives plate 10 to rotate reciprocally, which in turn drives photosensor 11 to rotate reciprocally. Photosensor 11 then drives level 12 to rotate reciprocally, ensuring that photosensor 11 remains horizontal. The trailer 1, moving to the left, causes the laser emitter 3 to deflect. The photosensitive sensor 11 continuously receives the deflected infrared light emitted by the laser emitter 3. The photosensitive sensor 11 sends the received infrared light deflection data to the computer, forming intuitive graphic data on the computer. This allows the laser measuring instrument to measure the flatness of the uphill and downhill slopes of the road without being exposed, thus avoiding the problem of the laser measuring head being bumped and interfered with by rough and uneven road objects during use, which caused the measurement of the flatness of the uphill and downhill slopes of the road in construction projects to be cumbersome and inaccurate.

[0025] A speed reduction device 13 is provided on the outer wall of the gear shaft 9. The speed reduction device 13 is used to slow down the rotation speed of the photosensitive sensor 11. A scraper device 14 is provided on the left side of the speed reduction device 13. The scraper device 14 is used to scrape off the dust attached to the speed reduction device 13.

[0026] Working principle: On a level road surface, open the casing door 203 of the machine housing 2 to calibrate the level instrument 12. Close the casing door 203, load the trailer 1 behind the vehicle, and the vehicle drives the trailer 1 to move to the left. The trailer 1 drives the laser emitter 3 to move to the left, and the machine housing 2 covers the laser emitter 3. The infrared light emitted by the laser emitter 3 passes through the crosshair cap 4, and the infrared light shines on the photosensitive sensor 11 in a cross shape. The level instrument 12 starts the servo motor 7. The output shaft of the servo motor 7 drives the gear shaft 8 to rotate reciprocally in both directions. 8 drives the gear shaft 2 9 to rotate in both directions, which in turn drives the plate 10 to rotate in both directions. The plate 10 drives the photosensitive sensor 11 to rotate in both directions, which in turn drives the level 12 to rotate in both directions, keeping the photosensitive sensor 11 in a horizontal position. The photosensitive sensor 11 continuously receives the offset infrared light emitted by the laser emitter 3 and sends the received infrared light offset data to the computer, forming intuitive graphic data on the computer. This allows the laser measuring instrument to measure the flatness of the uphill and downhill slopes of the highway without being exposed.

[0027] like Figure 1-9 As shown, based on the above embodiments, in another embodiment of the present invention, the deceleration device 13 includes: a ring straight plate 131, which is fixed to the right side of the outer wall of the gear shaft 9; Two rods 132 are fixed to the right side of the square shell 5; Two arc plates 133 are fixed to the outer walls of two rods 132; Two U-shaped plates 134 are fixed to the front and rear ends of the ring straight plate 131; Rubber rollers 135 are rotatably mounted on the inner walls of two U-shaped plates 134. The outer walls of the rubber rollers 135 roll in contact with the sides of the two arc plates 133 that are close to each other. The annular straight plate 131 is located between the square shell 5 and the photosensitive sensor 11. The two arc plates 133 are located in front of and behind the square shell 5. The rubber rollers 135 reduce the rotation speed of the photosensitive sensor 11 through the friction of rolling with the two arc plates 133. While the gear shaft 2 9 drives the plate 10 to rotate in both directions, the gear shaft 2 9 also drives the ring straight plate 131 to rotate in both directions. The ring straight plate 131 drives the U-shaped plate 134 to rotate in both directions, and the U-shaped plate 134 drives the rubber roller 135 to rotate in both directions. The square shell 5 supports the support frame 132, and the support frame 132 supports the arc plate 133. The rubber roller 135 rolls on the surface of the arc plate 133. Under the action of friction, the speed of the reciprocating rotation of the gear shaft 2 9 is slowed down, which slows down the rotation speed of the photosensitive sensor 11. This avoids the problem of inaccurate measurement data caused by the photosensitive sensor 11 adjusting to level too quickly and the photosensitive sensor 11 receiving inaccurate light source when using the laser measuring instrument.

[0028] Two U-shaped plates 136 are fixed to the outer wall of the ring plate 131. A spring 137 is fixed to the right side of each of the two U-shaped plates 136. A connecting plate 138 is fixed to the right end of each of the two springs 137. The right side of the two connecting plates 138 is fixedly connected to the left side of the photosensitive sensor 11. While the ring plate 131 drives the U-shaped plate 134 to rotate back and forth, the ring plate 131 drives the spiral plate 136 to rotate back and forth, the spiral plate 136 drives the spring 137 to rotate back and forth, the spring 137 drives the connecting plate 138 to rotate back and forth, and the connecting plate 138 supports the photosensitive sensor 11 to rotate back and forth. The photosensitive sensor 11 will vibrate during the rotation. Under the elastic force of the spring 137, the spring 137 reciprocates and contracts, reducing the vibration amplitude of the photosensitive sensor 11 during rotation. This avoids the problem that the photosensitive sensor 11 will generate strong amplitude and cause poor infrared light reception when the laser measuring instrument is in use.

[0029] The scraper device 14 includes: a short column 141, which is fixed to the middle of the left side of the two spiral plates 136 respectively; V-shaped bracket 142, V-shaped bracket 142 is fixed to the outer wall of the two short columns 141 respectively; Cylinder 143, which is fixed at both ends of the two V-shaped brackets 142 away from the two short columns 141; Chamfer plate 144 is fixed to the outer wall of four cylinders 143 respectively. The outer wall of chamfer plate 144 slides in contact with the side of the two arc plates 133 that are close to each other. Chamfer plate 144 is located above and below two rubber rollers 135 respectively. Chamfer plate 144 is used to scrape off the dust attached to the two arc plates 133. While the U-shaped plate 136 drives the spring 137 to rotate in both directions, the U-shaped plate 136 drives the short column 141 to rotate in both directions, the short column 141 drives the V-shaped frame 142 to rotate in both directions, the V-shaped frame 142 drives the cylinder 143 to rotate in both directions, and the cylinder 143 drives the chamfer plate 144 to rotate in both directions. During the rotation, the chamfer plate 144 scrapes off the dust attached to the arc plate 133, thereby avoiding the problem of dust adhering to the arc plate 133 during the use of the laser measuring instrument, which would cause the photosensitive sensor 11 to get stuck during leveling.

[0030] A vertical plate 145 is fixed to the left side of each of the two V-shaped frames 142, and an L-shaped rod 146 is fixed to the right side of each of the two vertical plates 145. An arc-shaped plate 147 is fixed to the end of each of the four L-shaped rods 146 away from the two vertical plates 145. The outer walls of the four arc-shaped plates 147 are fixedly connected to the outer walls of the four cylinders 143. While the V-shaped frame 142 drives the cylinder 143 to rotate in both directions, the V-shaped frame 142 also drives the vertical plate 145 to rotate in both directions. The vertical plate 145 drives the L-shaped rod 146 to rotate in both directions, and the L-shaped rod 146 drives the arc plate 147 to rotate in both directions. The arc plate 147 supports the rotation of the cylinder 143, so that the V-shaped frame 142 will not deform during rotation. This avoids the problem of damage to internal parts of the equipment caused by the V-shaped frame 142 rotating and deforming during the use of the laser measuring instrument.

[0031] Working principle: Gear shaft 2 9 drives the straight ring plate 131 to rotate back and forth, the straight ring plate 131 drives the U-shaped plate 134 to rotate back and forth, the U-shaped plate 134 drives the rubber roller 135 to rotate back and forth, the rod frame 132 supports the arc plate 133, and the rubber roller 135 rolls on the surface of the arc plate 133. The ring plate 131 drives the spiral plate 136 to rotate back and forth, the spiral plate 136 drives the spring 137 to rotate back and forth, the spring 137 drives the connecting plate 138 to rotate back and forth, the connecting plate 138 supports the photosensitive sensor 11 to rotate back and forth, and under the elastic force of the spring 137, the spring 137 reciprocates and contracts. The U-shaped plate 136 drives the short column 141 to rotate back and forth, the short column 141 drives the V-shaped frame 142 to rotate back and forth, the V-shaped frame 142 drives the cylindrical column 143 to rotate back and forth, the cylindrical column 143 drives the chamfer plate 144 to rotate back and forth, and the chamfer plate 144 scrapes the dust attached to the arc plate 133 during the rotation. V-shaped frame 142 drives vertical plate 145 to rotate back and forth, vertical plate 145 drives L-shaped rod 146 to rotate back and forth, L-shaped rod 146 drives arc plate 147 to rotate back and forth, and arc plate 147 supports the rotation of cylinder 143.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A laser flatness measuring instrument for building engineering, characterized in that, include: Trailer (1), the top surface of which is provided with a shell (2); A laser emitter (3) is fixed to the top surface of the trailer (1); A square shell (5) is fixed to the top surface of the trailer (1) and is located to the left of the laser emitter (3); A return frame (6) is fixed to the top surface of the trailer (1) and is located on the left side of the square shell (5); Servo motor (7), the servo motor (7) is fixed on the top surface of the return frame (6); Gear shaft 1 (8) is installed through and rotatably on the lower part of the inner wall of the square shell (5). The left end of gear shaft 1 (8) is fixedly connected to the right end of the output shaft of the servo motor (7). Gear shaft two (9) is mounted through and rotatably on the upper part of the inner wall of the square shell (5), and the outer wall of gear shaft two (9) meshes with the outer wall of gear shaft one (8); Plate (10), said plate (10) is fixed on the right side of gear shaft two (9); A photosensitive sensor (11) is fixed to the right side of the plate (10); A level (12) is fixedly installed in the middle of the top surface of the photosensitive sensor (11); The photosensitive sensor (11) is used to receive infrared light emitted by the laser emitter (3). The photosensitive sensor (11) is kept horizontal and continuously receives the offset laser signal emitted by the laser emitter (3) to generate flatness measurement data.

2. The laser flatness measuring instrument for building engineering according to claim 1, characterized in that, The housing (2) includes a housing (201), a heat dissipation vent (202), two housing doors (203), and a warning light (204). The housing (201) has an inspection port on the front. The heat dissipation vent (202) is located on the right side of the front and back of the housing (201). The two housing doors (203) are hinged to the inner wall of the inspection port of the housing (201). The warning light (204) is fixedly installed on the left side of the top surface of the housing (201).

3. The laser flatness measuring instrument for building engineering according to claim 2, characterized in that, The trailer (1) has a round hole on the right side of its top surface, and the laser emitter (3) has an emitter head on the left side. The outer wall of the emitter head of the laser emitter (3) is fixed with a cross light cap (4).

4. The laser flatness measuring instrument for building engineering according to claim 3, characterized in that, The outer wall of the gear shaft (9) is provided with a speed reduction device (13), which is used to reduce the rotation speed of the photosensitive sensor (11). A scraper device (14) is provided on the left side of the deceleration device (13), and the scraper device (14) is used to scrape off the dust attached to the deceleration device (13).

5. A laser flatness measuring instrument for building engineering according to claim 4, characterized in that, The speed reduction device (13) includes: a ring straight plate (131), which is fixed to the right side of the outer wall of the gear shaft (9); Two rods (132) are fixed to the right side of the square shell (5); Two arc plates (133) are fixed to the outer walls of two rods (132); Two U-shaped plates (134) are fixed to the front and rear ends of the ring straight plate (131); Rubber rollers (135) are rotatably mounted on the inner walls of two U-shaped plates (134), and the outer walls of the rubber rollers (135) are in rolling contact with the sides of the two arc plates (133) that are close to each other.

6. A laser flatness measuring instrument for building engineering according to claim 5, characterized in that, The ring plate (131) is located between the square shell (5) and the photosensitive sensor (11), and the two arc plates (133) are located in front of and behind the square shell (5). The rubber roller (135) slows down the rotation speed of the photosensitive sensor (11) by the friction of rolling with the two arc plates (133).

7. A laser flatness measuring instrument for building engineering according to claim 6, characterized in that, Two spiral plates (136) are fixed to the outer wall of the ring plate (131). A spring (137) is fixed to the right side of each of the two spiral plates (136). A connecting plate (138) is fixed to the right end of each of the two springs (137). The right side of the two connecting plates (138) is fixedly connected to the left side of the photosensitive sensor (11).

8. A laser flatness measuring instrument for building engineering according to claim 7, characterized in that, The scraper device (14) includes: a short column (141), which is fixed to the middle of the left side of the two spiral plates (136); V-shaped frame (142), the V-shaped frame (142) is fixed to the outer wall of two short columns (141); A cylinder (143) is fixed at both ends of two V-shaped brackets (142) away from the two short columns (141); Chamfer plate (144) is fixed to the outer wall of four cylinders (143) respectively. The outer wall of the chamfer plate (144) slides in contact with the side of the two arc plates (133) that are close to each other.

9. A laser flatness measuring instrument for building engineering according to claim 8, characterized in that, The chamfering plate (144) is located above and below the two rubber rollers (135) respectively, and the chamfering plate (144) is used to scrape off the dust attached to the two arc plates (133).

10. A laser flatness measuring instrument for building engineering according to claim 9, characterized in that, A vertical plate (145) is fixed to the left side of each of the two V-shaped frames (142), and an L-shaped rod (146) is fixed to the right side of each of the two vertical plates (145). An arc-shaped plate (147) is fixed to one end of each of the four L-shaped rods (146) away from the two vertical plates (145). The outer walls of the four arc-shaped plates (147) are fixedly connected to the outer walls of the four cylinders (143).

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