A construction layout device and construction method for site excavation of road and bridge

Abstract

The present invention discloses a construction line setting device and a construction method for road and bridge site excavation, which relates to the technical field of line setting devices. The device includes a plurality of marking rods, on which a laser emitter and a marking board are respectively slidably arranged through sleeves, and a limiting screw is arranged on the sleeve. It is characterized in that it further includes a line marking mechanism, which includes a material storage component, a roller component and a material discharging component; the material storage component includes a material storage cylinder, a feeding pipe coaxially connected to one end of the material storage cylinder and communicated with its interior, and a handrail coaxially connected to the other end of the material storage cylinder. The overall shape of the line marking mechanism of the present invention is linear, which is not only convenient to carry, but also convenient for the staff to carry out line marking operations. At the same time, the present invention adopts a single-wheel rolling design, which can not only reduce the burden of the staff to a certain extent, but also facilitate the staff to adjust the moving direction during the moving process, making the marked line more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of wire laying devices, and particularly to a construction wire laying device and a construction method for road and bridge site excavation. Background Art

[0002] Currently, when building bridges and roads, the construction sidelines are usually determined by manually or mobile laser emission wire laying. After that, white lime powder is scattered along the line to enable the construction personnel to construct along the line to ensure the construction accuracy. However, the following problems exist during wire laying:

[0003] 1. When manually laying the wire, it is time-consuming and laborious to manually push the wire laying box for wire laying.

[0004] 2. When laying the wire, there is a problem that the ground height is not consistent, so there is a problem that the wire is prone to tilt.

[0005] 3. The existing wire laying devices are unable to press the already laid lime powder during use, resulting in the lime powder being scattered and easily lifted by the wind, causing environmental pollution and harm to the human body.

[0006] 4. In the prior art, the material feeding is not uniform enough during use, resulting in waste of quantity and prone to wire breakage problems. Summary of the Invention

[0007] The purpose of the present invention is to provide a construction wire laying device and a construction method for road and bridge site excavation to solve the problems raised in the above background art.

[0008] To achieve the above invention purpose, the present invention adopts the following technical solutions:

[0009] A construction wire laying device for road and bridge site excavation provided by the present invention includes a plurality of marking poles. A laser emitter and a marking board are respectively slidably arranged on the marking poles through sleeves, and a limit screw is arranged on the sleeve. It is characterized in that it further includes a line marking mechanism, and the line marking mechanism includes a material storage component, a roller component, and a material feeding component;

[0010] The material storage component includes a material storage cylinder, a feeding pipe coaxially connected to one end of the material storage cylinder and communicating with its interior, and a handrail coaxially connected to the other end of the material storage cylinder; the end of the feeding pipe away from the material storage cylinder has a seal, and a feeding hole is opened on the side wall of the feeding pipe at the seal;

[0011] The roller component includes a positioning cylinder fixed at the seal of the feeding pipe, and rotating disks symmetrically and coaxially arranged at both ends of the positioning cylinder; the positioning cylinder is perpendicular to the feeding pipe and forms a T-shaped structure with the feeding pipe, and both ends of the positioning cylinder are rotatably connected to the opposite sides of the two rotating disks;

[0012] The blanking assembly includes a first rotating shaft coaxially arranged inside the blanking pipe and a spiral blade welded to the outside of the first rotating shaft. One end of the first rotating shaft extends into the inside of the storage cylinder and is fixed with a screen. The side wall of the screen is closely attached to the inner wall of the storage cylinder. The other end of the first rotating shaft extends into the positioning cylinder and is equipped with a first bevel gear. The blanking assembly further includes a second rotating shaft coaxially arranged inside the positioning cylinder. Both ends of the second rotating shaft are fixed to the opposite sides of two rotating discs, and a second bevel gear meshing with the first bevel gear is assembled on the second rotating shaft.

[0013] Further, a conical cavity and a cylindrical cavity that communicate with each other are respectively formed inside the storage cylinder. The conical cavity is close to one end of the blanking pipe and communicates with the blanking pipe.

[0014] Further, a cover plate is detachably installed at one end of the positioning cylinder away from the blanking pipe. The armrest includes a telescopic rod with a fixed end connected to the cover plate and a grip connected to the telescopic end of the telescopic rod.

[0015] Further, a dust-proof cylinder is coaxially arranged outside the positioning cylinder. An outlet groove is penetrated and opened on one side of the dust-proof cylinder close to the blanking hole. Both ends of the dust-proof cylinder are respectively attached to the side surfaces of the rotating discs, and the dust-proof cylinder is fixed to the outside of the blanking pipe.

[0016] Further, the scribing mechanism further includes an air injection mechanism. The air injection mechanism includes an annular transition pipe coaxially arranged at one end of the storage cylinder close to the blanking pipe, a gas generating device for injecting gas into the inside of the annular transition pipe, and an exhaust assembly arranged at one end of the storage cylinder close to the armrest. An exhaust assembly inclined in the circumferential direction is arranged inside the annular transition pipe towards the exhaust port side, and the end of the injection pipe away from the annular transition pipe extends and communicates with the inside of the storage cylinder. A filter cloth is arranged inside the exhaust assembly.

[0017] Further, the scribing mechanism further includes a dust reduction mechanism. The dust reduction mechanism includes:

[0018] A spray head, which is fixed on the side of the liquid storage cylinder opposite to the blanking hole and close to one end of the blanking pipe;

[0019] A liquid storage assembly, which includes a liquid storage bottle, a connection seat, and a fixing ring. The liquid storage bottle includes a bottle body part, a necking part, and a columnar connection part. A liquid outlet is arranged at the connection part, and a first thread is arranged on the outside of the connection part. The connection seat is fixed to one end of the liquid storage cylinder close to the blanking pipe. A connection hole parallel to the liquid storage cylinder and adapted to the connection part is arranged on the connection seat. A second thread adapted to the first thread is arranged on the inner wall of the connection hole. The fixing ring is coaxial with the connection hole and fixed to the middle of the liquid storage cylinder, and the fixing ring is adapted to the liquid storage bottle;

[0020] The exhaust pipe includes an exhaust section coaxially arranged inside the connection hole, and a gas transmission section with one end connected to the vertical section and the other end connected to the exhaust assembly. The length of the exhaust section is equal to the length of the liquid storage bottle;

[0021] The infusion tube has one end communicating with the inside of the connection hole, and the other end of the infusion tube is connected to the nozzle.

[0022] Further, the gas generating device includes a pair of suction components respectively arranged on both sides of the storage barrel corresponding to the two rotating disks; the suction components include:

[0023] An air injection cylinder, which is parallel to the rotating disk and installed on one side of the storage barrel along the axial direction of the storage barrel. A piston is slidably arranged inside the air injection cylinder, and a movable rod is vertically arranged on the side of the piston close to the rotating disk. The movable rod extends to the outside of the air injection cylinder and is connected with a driving part, and the driving part is used to drive the movable rod to reciprocate;

[0024] An air inlet pipe and an air outlet pipe are respectively arranged at one end of the air injection cylinder far from the rotating disk. A first one-way valve and a second one-way valve are respectively arranged on the air inlet pipe and the air outlet pipe. One end of the air outlet pipe far from the air injection cylinder is communicated with the annular transition pipe.

[0025] Further, the driving part includes a fixed column fixed on the side of the rotating disk far from the positioning cylinder. An articulated rod is connected to the fixed column through a spherical shaft, and one end of the articulated rod far from the fixed column extends and is connected to one end of the corresponding movable rod through a spherical shaft; the fixed columns of the two driving parts are arranged alternately.

[0026] The present invention also provides a construction method of the above-mentioned construction layout device for road and bridge site excavation, including the following steps:

[0027] Step 1: Determine the excavation area, insert marking poles at each turning point of the excavation area, adjust the positions of the laser emitters and marking plates on each marking pole, and make the laser emitted by the laser emitter on the marking pole shine on the marking plate on another marking pole along the clockwise or counterclockwise direction of the excavation area;

[0028] Step 2: Turn the end of the storage barrel close to the rotating disk upward, then insert the connecting part of the liquid storage bottle into the connection hole of the connection seat from the fixed ring, rotate the liquid storage bottle to connect the connecting part of the liquid storage bottle with the connection seat, and then open the cover body to load lime powder into the storage barrel to complete the preparation work before layout.

[0029] Step 3: Move the marking mechanism to one of the marking poles, make the rotating disk of the marking mechanism touch the ground, then hold the handle and push the marking mechanism to make the rotating disk of the marking mechanism move along the laser emission direction until the marking mechanism returns to the initial marking pole, that is, complete the marking work;

[0030] Step 3: After the marking work is completed, remove the marking pole and marking mechanism.

[0031] Furthermore, in the step 2, the amount of lime powder loaded is lower than the height of the exhaust assembly.

[0032] Compared with the existing technology, one or more of the above technical solutions have the following beneficial effects:

[0033] The overall shape of the marking mechanism of the present invention is linear, which is not only convenient to carry but also convenient for workers to perform marking operations.

[0034] The single-wheel rolling design of the present invention can not only reduce a certain burden on the staff, but also facilitate the staff to adjust the moving direction during the moving process, so that the marking line can be drawn more accurately.

[0035] The present invention discharges the material by driving the spiral blade to rotate via the first rotating shaft, and the first rotating shaft rotates along with the rotation of the rotating disk. Therefore, when the worker increases the pushing speed, the rotation speed of the rotating disk will increase (i.e., the moving distance in the same time will increase), and accordingly, the rotation speed of the first rotating shaft will also increase (i.e., the discharging speed will also increase). Therefore, when the worker's moving speed changes, the amount of powdered pigment discharged will also change, so that the amount of powdered pigment used in each marking line tends to be consistent, avoiding the waste caused by excessive discharge of powdered pigment and the unclear marking line caused by insufficient discharge of powdered pigment.

[0036] When the above-mentioned effects are applied in actual operations, workers can change their moving speed according to the terrain to improve the marking efficiency. That is, when the road surface is relatively flat, the moving speed can be increased, and when the road surface is uneven, the moving speed can be reduced. The marking direction can be adjusted by observing the laser line.

[0037] The present invention provides a gas injection component, which can inject gas into the storage barrel when the marking mechanism is used. The gas flows between the powdered pigments, which not only increases the gaps between the powdered pigments and is beneficial for the discharge of the powdered pigments, but also avoids the powdered pigments from agglomerating and causing blockage of the powdered pigments.

[0038] The present invention provides a dust reduction component and injects the gas discharged from the gas injection component into a liquid storage bottle, so that the liquid in the liquid storage bottle can enter the nozzle through the infusion tube and spray out water mist. The water mist can absorb the flying dust and then settle, and can also come into contact with the newly drawn marking line to wet the powdered pigment, thereby preventing the powdered pigment of the marking line from being blown up by wind, causing pollution to the environment and harm to the human body.

[0039] In addition, the liquid storage bottle can be a 1.5L large bottle mineral water bottle sold on the market. Its second thread is adapted to the thread of the mouth of the existing large bottle mineral water bottle. When the liquid in the liquid storage bottle is used up, the liquid storage bottle can be unscrewed for quick replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings forming a part of this invention are used to provide a further understanding of the invention. The schematic embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0041] Figure 1 is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0042] Figure 2 is a schematic diagram of the side sectional structure of Embodiment 1 of the present invention;

[0043] Figure 3 is Figure 2 a schematic diagram of the partial structure at A of

[0044] Figure 4 is a schematic diagram of the structure from the first perspective of Embodiment 2 of the present invention;

[0045] Figure 5 is a schematic diagram of the structure from the second perspective of Embodiment 2 of the present invention;

[0046] Figure 6 is a schematic diagram of the side sectional structure of Embodiment 2 of the present invention;

[0047] Figure 7 is Figure 6 a schematic diagram of the partial structure at B of

[0048] Figure 8 is a schematic diagram of the sectional structure of the air injection cylinder in Embodiment 2 of the present invention;

[0049] Figure 9 is Figure 8 a schematic diagram of the partial structure at C of

[0050] Figure 10 is a schematic diagram of the structure from the first perspective of Embodiment 3 of the present invention;

[0051] Figure 11 is a schematic diagram of the structure from the second perspective of Embodiment 3 of the present invention;

[0052] Figure 12 is a schematic diagram of the side sectional structure of Embodiment 3 of the present invention;

[0053] Figure 13 is Figure 12 a schematic diagram of the partial structure at D of

[0054] Figure 14 It is a schematic structural diagram of the liquid storage bottle of the present invention;

[0055] Figure 15 It is a schematic structural diagram of the identification rod of the present invention.

[0056] In the figure:

[0057] 100, identification rod; 200, laser emitter; 300, identification plate;

[0058] 400, storage component; 410, storage cylinder; 411, conical cavity; 412, cylindrical cavity; 413, cover plate; 420, blanking pipe; 421, blanking hole; 430, handrail; 431, telescopic rod; 432, grip;

[0059] 500, roller assembly; 510, positioning cylinder; 520, rotating disk;

[0060] 600, blanking component; 610, first rotating shaft; 620, spiral blade; 630, screen; 640, first bevel gear; 650, second rotating shaft; 660, second bevel gear;

[0061] 700, dust-proof cover; 710, discharge chute;

[0062] 800, gas injection component; 810, annular transition pipe; 821, gas injection cylinder; 822, piston; 823, movable rod; 824, driving part; 824a, fixed column; 824b, articulated rod; 825, intake pipe; 826, outlet pipe; 827, first one-way valve; 828, second one-way valve; 830, exhaust component; 840, gas injection pipe;

[0063] 900, dust reduction component; 910, nozzle; 921, liquid storage bottle; 921a, bottle body part; 921b, necking part; 921c, connecting part; 921d, liquid outlet; 921e, first thread; 922, connecting seat; 922a, connecting hole; 922b, second thread; 930, exhaust pipe; 931, exhaust section; 932, gas transmission section; 940, liquid delivery pipe. Detailed implementation manners

[0064] In order to enable those skilled in the art of the present technology to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application. Embodiment

[0065] Please refer toFigures 1-3 As shown, the present invention provides a construction layout device for road and bridge site excavation, including a plurality of marking poles 100. A laser emitter 200 and a marking board 300 are respectively slidably arranged on the marking poles 100 through sleeves (as Figure 15 shown), and a limit screw is arranged on the sleeve. It also includes a line marking mechanism. The cooperation between the laser emitter 200 and the marking board 300 on the marking pole 100 can determine the boundary of the excavation area, facilitating the subsequent line marking mechanism to draw a marking line along the boundary of the predetermined excavation area.

[0066] The line marking mechanism includes a material storage component 400, a roller component 500, and a material discharging component 600.

[0067] The interior of the material storage component 400 can store powdered pigments. The powdered pigments can be lime powder or other colored powdered substances. The roller component 500 contacts the ground and can carry the material storage component 400 to move along the boundary of the predetermined excavation area. The material discharging component 600 can discharge the stored pigments when the material storage component 400 moves along the set route, thereby drawing a marking line on the set route.

[0068] The storage component 400 includes a storage cylinder 410, a blanking pipe 420 coaxially connected to one end of the storage cylinder 410 and communicating with its interior, and a handrail 430 coaxially connected to the other end of the storage cylinder 410; one end of the blanking pipe 420 away from the storage cylinder 410 is sealed, and a blanking hole 421 is formed in the side wall of the blanking pipe 420 on one side of the sealed portion; the roller assembly 500 includes a positioning cylinder 510 fixed to the sealed portion of the blanking pipe 420, and rotating disks 520 symmetrically and coaxially arranged at both ends of the positioning cylinder 510; the positioning cylinder 510 is perpendicular to the blanking pipe 420 and forms a T-shaped structure with the blanking pipe 420, and both ends of the positioning cylinder 510 are rotatably connected to the opposite sides of the two rotating disks 520; the blanking component 600 includes a first rotating shaft 610 coaxially arranged inside the blanking pipe 420, and a spiral blade 620 welded to the outside of the first rotating shaft 610. One end of the first rotating shaft 610 extends into the interior of the storage cylinder 410 and is fixed with a sieve mesh 630. The side wall of the sieve mesh 630 is closely attached to the inner wall of the storage cylinder 410 (the setting of the sieve mesh 630 can prevent the powdery pigment from squeezing the powdery pigment at the bottom. When discharging, the first rotating shaft 610 can drive the sieve mesh 630 to enable the powdery pigment above to pass through its holes and move to its lower part). The other end of the first rotating shaft 610 extends into the positioning cylinder 510 and is equipped with a first bevel gear 640. The blanking component 600 further includes a second rotating shaft 650 coaxially arranged inside the positioning cylinder 510. Both ends of the second rotating shaft 650 are fixed to the opposite sides of the two rotating disks 520, and a second bevel gear 660 meshing with the first bevel gear 640 is assembled on the second rotating shaft 650.

[0069] In the above design, the overall shape of the scribing mechanism is linear, which is not only convenient for carrying (because the application scenarios of the scribing mechanism are mostly in mountainous and remote areas. If the volume is too large during carrying, it will increase the labor intensity of the staff), but also convenient for the staff to perform scribing operations. Further, each part of the scribing mechanism can be made of hard plastic or aluminum alloy to reduce the weight of the scribing mechanism and further reduce the burden on the staff during carrying.

[0070] During specific use, the staff can apply a certain pushing force through the armrest 430 to make the rotating disk 520 of the roller assembly 500 roll on the ground, so as to move the marking mechanism (the unicycle rolling design can not only reduce a certain burden on the staff, but also facilitate the staff to adjust the moving direction during the movement process, so that the marking line is drawn more accurately). During the movement of the marking mechanism, the second rotating shaft 650 will rotate together with the rotating disk 520. Since the first bevel gear 640 assembled on the first rotating shaft 610 is engaged with the second bevel gear 660 assembled on the second rotating shaft 650, the first rotating shaft 610 can be rotated together when the second rotating shaft 650 rotates. When the first rotating shaft 610 rotates, the powdered pigment inside the storage barrel 410 can be evenly discharged through the spiral blade 620 on its outer side, so that the marking mechanism leaves a marking line on the moving trajectory.

[0071] It should be noted that the first rotating shaft 610 rotates in conjunction with the rotation of the rotating disk 520. Therefore, when the operator increases their speed, the rotation speed of the rotating disk 520 increases (i.e., the distance traveled in the same time period increases). Accordingly, the rotation speed of the first rotating shaft 610 also increases (i.e., the discharge speed increases). Therefore, when the operator's speed changes, the amount of powdered pigment discharged also changes, ensuring that the amount of powdered pigment used for each marking line is consistent, avoiding waste caused by excessive powdered pigment discharge and unclear marking lines caused by insufficient powdered pigment discharge. In actual practice, this effect can be applied by operators adjusting their speed according to the terrain to improve marking efficiency. For example, when the road surface is relatively flat, the movement speed can be increased, while when the road surface is uneven, the movement speed can be reduced, and the marking direction can be adjusted by observing the laser line.

[0072] like Figure 3 As shown, in this embodiment, the interior of the storage barrel 410 is formed with a conical cavity 411 and a cylindrical cavity 412 that are interconnected. The conical cavity 411 is connected to the discharge pipe 420 at one end near the discharge pipe 420. This design allows the powdered pigment to move toward the discharge pipe 420 when the storage barrel 410 is tilted, preventing clogging of the powdered pigment.

[0073] like Figure 1As shown, in this embodiment, a cover plate 413 is detachably installed at one end of the storage cylinder 410 away from the blanking pipe 420. The handrail 430 includes a telescopic rod 431 with a fixed end connected to the cover plate 413, and a grip 432 connected to the telescopic end of the telescopic rod 431. The cover plate 413 can be connected to the storage cylinder 410 by means of snap connection or threading. During replenishment, the cover plate 413 can be removed to replenish the powdered pigment. The telescopic rod 431 can be adjusted adaptively according to the height of the staff member.

[0074] As Figure 3 shown, in this embodiment, a dust-proof cover 700 is coaxially arranged outside the positioning cylinder 510. An outlet groove 710 is formed through one side of the dust-proof cover 700 close to the blanking hole 421. Both ends of the dust-proof cover 700 are respectively attached to the side surface of the rotating disk 520, and the dust-proof cover 700 is fixed to the outside of the blanking pipe 420. With the above design, the dust-proof cover 700 can prevent the powdered pigment from flying everywhere when it falls. Since the blanking hole 421 is still at a certain distance from the ground, when the powdered pigment is falling, affected by the surrounding environment, that is, the wind, it will fly everywhere and pollute the working environment. The dust-proof cover 700 can make the powdered pigment discharge from the outlet groove 710 close to the ground, avoiding the situation that the powdered pigment flies everywhere and pollutes the working environment under the influence of the surrounding environment during the falling process. Embodiment

[0075] The difference between the second embodiment and the first embodiment is as follows:

[0076] As Figures 4-9 shown, the scribing mechanism further includes an air injection assembly 800. The air injection assembly 800 includes an annular transition pipe 810 coaxially arranged at one end of the storage cylinder 410 close to the blanking pipe 420, a gas generating device for injecting gas into the interior of the annular transition pipe 810, and an exhaust assembly 830 arranged at one end of the storage cylinder 410 close to the handrail 430; an injection pipe 840 inclined in the circumferential direction is arranged inside the annular transition pipe 810 towards the exhaust assembly 830, and the end of the injection pipe 840 away from the annular transition pipe 810 extends and communicates with the interior of the storage cylinder 410. A filter cloth is arranged inside the exhaust assembly 830.

[0077] With the above design, when the scribing mechanism is in use, gas can be introduced into the annular transition pipe 810 through the gas generating device, so that the gas is sprayed obliquely into the interior of the storage cylinder 410 through the injection pipe 840. The gas sprayed into the interior of the storage cylinder 410 flows between the powdered pigments and then is discharged through the exhaust assembly 830. During this process, the gas flowing between the powdered pigments can not only increase the gap between the powdered pigments, which is beneficial to the discharge of the powdered pigments, but also prevent the powdered pigments from caking and causing blockage of the powdered pigments.

[0078] AsFigure 7 and Figure 9 As shown, further, the gas generating device includes a pair of suction components respectively arranged on both sides of the material storage cylinder 410 corresponding to the two rotating disks 520; each suction component includes: an air injection cylinder 821, which is parallel to the rotating disk 520 and installed on one side of the material storage cylinder 410 along the axial direction of the material storage cylinder 410. A piston 822 is slidably arranged inside the air injection cylinder 821, and a movable rod 823 is vertically arranged on the side of the piston 822 close to the rotating disk 520, and the movable rod 823 extends outside the air injection cylinder 821 and is connected with a driving member 824. The driving member 824 is used to drive the movable rod 823 to reciprocate; an intake pipe 825 and an outlet pipe 826 are respectively arranged at one end of the air injection cylinder 821 far from the rotating disk 520. A first one-way valve 827 and a second one-way valve 828 are respectively arranged on the intake pipe 825 and the outlet pipe 826. The end of the outlet pipe 826 far from the air injection cylinder 821 is communicated with the annular transition pipe 810.

[0079] Specifically, the driving member 824 includes a fixed column 824a fixed on the side of the rotating disk 520 far from the positioning cylinder 510. An articulated rod 824b is connected to the fixed column 824a through a ball joint, and the end of the articulated rod 824b far from the fixed column 824a extends and is connected with one end of the corresponding movable rod 823 through a ball joint; the fixed columns 824a of the two driving members 824 are arranged in a staggered manner.

[0080] Through the above design, during the rotation of the rotating disk 520 (i.e., during the movement of the scribing mechanism), the rotating disk 520 can drive the movable rod 823 to drive the piston 822 to reciprocate inside the air injection cylinder 821 through the articulated rod 824b. Then, the outside air is sucked into the air injection cylinder 821 through the intake pipe 825 and discharged from the outlet pipe 826 into the annular transition pipe 810, so as to realize the ventilation into the material storage cylinder 410. Since the gas generating device is driven by the rotating disk 520, a motor and a battery do not need to be installed, and the weight of the scribing mechanism is further reduced.

[0081] Of course, it is not limited to this. The above gas generating device can also be other mechanisms capable of injecting gas into the annular transition pipe 810, such as an air pump. The output pipe of the air pump is communicated with the annular transition pipe 810, and the start and stop of the air output are controlled by an air pump switch. Embodiment

[0082] The difference between Embodiment Three and Embodiment Two lies in:

[0083] As Figures 10-15As shown, the marking mechanism also includes a dust reduction component 900, which includes: a nozzle 910, which is fixed to the side of the storage barrel 410 relative to the discharge hole 421 and close to one end of the discharge pipe 420; a liquid storage component, which includes a liquid storage bottle 921, a connecting seat 922 and a fixing ring 923, the liquid storage bottle 921 includes a bottle body 921a, a necking portion 921b and a columnar connecting portion 921c, a liquid outlet 921d is provided at the connecting portion 921c, and a first thread 921e is provided on the outer side of the connecting portion 921c, the connecting seat 922 is fixed to one end of the storage barrel 410 close to the discharge pipe 420, and a connecting seat 922 is provided which is parallel to the storage barrel 410 and connected to the connecting seat The inner wall of the connecting hole 922a is provided with a second thread 922b adapted to the first thread 921e, the fixing ring 923 is coaxial with the connecting hole 922a and fixed to the middle of the storage barrel 410, and the fixing ring 923 is adapted to the liquid storage bottle 921; the exhaust pipe 930 includes an exhaust section 931 coaxially arranged inside the connecting hole 922a, and a gas delivery section 932 with one end vertically connected to the other end connected to the exhaust assembly 830, the length of the exhaust section 931 is equal to the length of the liquid storage bottle 921; an infusion tube 940, one end of which is connected to the inside of the connecting hole 922a, and the other end of the infusion tube 940 is connected to the nozzle 910.

[0084] According to the above design, when the gas is discharged from the exhaust component 830, the exhaust pipe 930 can introduce the gas into the exhaust section 931 through the gas delivery section 932, and then discharge it into the space at the end of the liquid storage bottle 921 away from the liquid outlet 921d, so that the air pressure in the space at the end of the liquid storage bottle 921 away from the liquid outlet 921d continues to increase, and then the liquid in the liquid storage bottle 921 enters the nozzle 910 through the liquid delivery tube 940 and is sprayed out. The sprayed liquid can absorb the flying dust and then settle, and can also come into contact with the newly drawn marking line to moisten the powdered pigment, thereby preventing the powdered pigment of the marking line from being blown up by the wind, causing environmental pollution and harm to the human body.

[0085] It should be noted that the liquid storage bottle 921 can be a 1.5L large mineral water bottle sold on the market, and its second thread 922b is compatible with the existing 1.5L large mineral water bottle mouth thread. When the liquid in the liquid storage bottle 921 is used up, the liquid storage bottle 921 can be unscrewed for quick replacement.

[0086] The present invention also provides a construction method of the above-mentioned construction setting-out device for road and bridge site excavation, comprising the following steps:

[0087] Step 1: Determine the excavation area, insert marking poles 100 at each turning point of the excavation area, adjust the positions of the laser emitters 200 and the marking plates 300 on each marking pole 100, and along the clockwise or counterclockwise direction of the excavation area, make the laser of the laser emitter 200 on one marking pole 100 shine on the marking plate 300 on another marking pole 100;

[0088] Step 2: Keep the end of the storage barrel 410 close to the turntable 520 facing upward. Then, insert the connecting part 921c of the liquid storage bottle 921 into the connecting hole 922a of the connecting seat 922 from the fixing ring 923, and rotate the liquid storage bottle 921 to connect the connecting part 921c of the liquid storage bottle 921 with the connecting seat 922. Subsequently, open the cover and load lime powder into the storage barrel 410 to complete the preparatory work before line marking.

[0089] Step 3: Move the line marking mechanism to one of the marking poles 100, make the turntable 520 of the line marking mechanism touch the ground. Then, hold the handle 432 by hand and push the line marking mechanism, so that the turntable 520 of the line marking mechanism moves along the laser emission direction until the line marking mechanism returns to the initial marking pole 100, that is, the line marking work is completed;

[0090] Step 3: After the line marking work is completed, remove the marking poles 100 and the line marking mechanism.

[0091] Further, in Step 2, the filling amount of lime powder is lower than the height of the exhaust assembly 830.

[0092] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A construction layout device for road and bridge site excavation, comprising a plurality of marking rods (100), on which a laser emitter (200) and a marking board (300) are respectively slidably arranged through sleeves, and a limit screw is arranged on the sleeve, characterized in that, It further includes a scribing mechanism, and the scribing mechanism includes a material storage assembly (400), a roller assembly (500), and a blanking assembly (600); The material storage assembly (400) includes a material storage cylinder (410), a blanking pipe (420) coaxially connected to one end of the material storage cylinder (410) and communicating with its interior, and a handrail (430) coaxially connected to the other end of the material storage cylinder (410); one end of the blanking pipe (420) away from the material storage cylinder (410) has a seal, and a blanking hole (421) is formed in the side wall of the blanking pipe (420) on one side of the seal; The roller assembly (500) includes a positioning cylinder (510) fixed at the seal of the blanking pipe (420), and rotating disks (520) symmetrically and coaxially arranged at both ends of the positioning cylinder (510); the positioning cylinder (510) is perpendicular to the blanking pipe (420) and forms a T-shaped structure with the blanking pipe (420), and both ends of the positioning cylinder (510) are rotatably connected to the opposite sides of the two rotating disks (520); The blanking assembly (600) includes a first rotating shaft (610) coaxially arranged inside the blanking pipe (420), and a spiral blade (620) welded to the outside of the first rotating shaft (610). One end of the first rotating shaft (610) extends into the interior of the material storage cylinder (410) and is fixed with a screen (630). The side wall of the screen (630) is closely attached to the inner wall of the material storage cylinder (410). The other end of the first rotating shaft (610) extends into the positioning cylinder (510) and is equipped with a first bevel gear (640). The blanking assembly (600) further includes a second rotating shaft (650) coaxially arranged inside the positioning cylinder (510). Both ends of the second rotating shaft (650) are fixed to the opposite sides of the two rotating disks (520), and a second bevel gear (660) meshing with the first bevel gear (640) is assembled on the second rotating shaft (650); The scribing mechanism further includes an air injection mechanism, and the air injection mechanism includes an annular transition pipe (810) coaxially arranged at one end of the material storage cylinder (410) close to the blanking pipe (420), a gas generating device for injecting gas into the interior of the annular transition pipe (810), and an exhaust assembly (830) arranged at one end of the material storage cylinder (410) close to the handrail (430); an exhaust assembly (830) inclined in the circumferential direction inside the annular transition pipe (810) toward the exhaust port side is provided, and one end of the injection pipe (840) away from the annular transition pipe (810) extends and communicates with the interior of the material storage cylinder (410). A filter cloth is arranged inside the exhaust assembly (830); The scribing mechanism further includes a dust reduction mechanism, and the dust reduction mechanism includes: A spray head (910) fixed on one side of the liquid storage cylinder relative to the blanking hole (421) and close to one end of the blanking pipe (420); Liquid storage assembly, which includes a liquid storage bottle (921), a connecting seat (922) and a fixing ring. The liquid storage bottle (921) includes a bottle body part (921a), a necking part (921b) and a columnar connecting part (921c). An outlet (921d) is provided at the connecting part (921c), and a first thread (921e) is provided on the outer side of the connecting part (921c). The connecting seat (922) is fixed to one end of the liquid storage cylinder close to the feeding pipe (420). A connecting hole (922a) parallel to the storage barrel (410) and adapted to the connecting part (921c) is provided on the connecting seat (922). A second thread (922b) adapted to the first thread (921e) is provided on the inner wall of the connecting hole (922a). The fixing ring is coaxial with the connecting hole (922a) and fixed in the middle of the storage barrel (410), and the fixing ring is adapted to the liquid storage bottle (921); Exhaust pipe (930), which includes an exhaust section (931) coaxially arranged inside the connecting hole (922a), and a gas transmission section (932) with one end connected to the vertical section and the other end connected to the exhaust assembly (830). The length of the exhaust section (931) is equal to the length of the liquid storage bottle (921); 2. The construction layout device for road and bridge site excavation according to claim 1, wherein, Infusion tube (940), one end of which is communicated with the inside of the connecting hole (922a), and the other end of the infusion tube (940) is connected to the nozzle (910).

3. The construction layout device for road and bridge site excavation according to claim 1, characterized in that, A conical cavity (411) and a cylindrical cavity (412) that communicate with each other are respectively formed inside the storage barrel (410). The conical cavity (411) is close to one end of the feeding pipe (420) and communicates with the feeding pipe (420).

4. The construction layout device for road and bridge site excavation according to claim 1, characterized in that, A cover plate (413) is detachably installed at one end of the positioning cylinder (510) away from the feeding pipe (420). The armrest (430) includes a telescopic rod (431) with a fixed end connected to the cover plate (413), and a grip (432) connected to the telescopic end of the telescopic rod (431).

5. The construction layout device for road and bridge site excavation according to claim 1, characterized in that, A dust-proof cylinder is coaxially arranged outside the positioning cylinder (510). A discharge slot (710) is penetrated and opened on one side of the dust-proof cylinder close to the feeding hole (421). Both ends of the dust-proof cylinder are respectively attached to the side surface of the rotating disc (520), and the dust-proof cylinder is fixed to the outside of the feeding pipe (420). The gas generating device includes a pair of suction components respectively arranged on both sides of the storage barrel (410) corresponding to the two rotating discs (520); The suction component includes: An air injection cylinder (821), which is parallel to the rotating disc (520) and installed on one side of the storage barrel (410) along the axial direction of the storage barrel (410). A piston (822) is slidably arranged inside the air injection cylinder (821). An activity rod (823) is vertically arranged on the side of the piston (822) close to the rotating disc (520), and the activity rod (823) extends outside the air injection cylinder (821) and is connected with a driving part (824). The driving part (824) is used to drive the activity rod (823) to reciprocate; An intake pipe (825) and an exhaust pipe (826) are respectively arranged at one end of the air injection cylinder (821) far from the rotating disk (520). A first one-way valve (827) and a second one-way valve (828) are respectively arranged on the intake pipe (825) and the exhaust pipe (826). One end of the exhaust pipe (826) far from the air injection cylinder (821) is communicated with the annular transition pipe (810).

6. The construction layout device for road and bridge site excavation according to claim 5, characterized in that, The driving member (824) includes a fixed column (824a) fixed on one side of the rotating disk (520) far from the positioning cylinder (510). An articulated rod (824b) is connected to the fixed column (824a) through a ball shaft, and one end of the articulated rod (824b) far from the fixed column (824a) extends and is connected to one end of the corresponding movable rod (823) through a ball shaft; the fixed columns (824a) of the two driving members (824) are arranged staggeredly with each other.

7. The construction method of the construction layout device for road and bridge site excavation according to claim 3, characterized in that, It includes the following steps: Step 1: Determine the excavation area, insert marking rods (100) at each turning point in the excavation area, adjust the positions of the laser emitters (200) and the marking plates (300) on each marking rod (100), and along the clockwise or counterclockwise direction of the excavation area, make the laser of the laser emitter (200) on one marking rod (100) irradiate on the marking plate (300) on another marking rod (100). Step 2: Turn the end of the storage barrel (410) close to the rotating disk (520) upward. Then, after inserting the connecting part (921c) of the liquid storage bottle (921) into the connecting hole (922a) of the connecting seat (922) from the fixed ring, rotate the liquid storage bottle (921) to connect the connecting part (921c) of the liquid storage bottle (921) with the connecting seat (922). Subsequently, open the cover and load lime powder into the storage barrel (410) to complete the preparatory work before line marking. Step 3: Move the line marking mechanism to one of the marking rods (100) so that the rotating disk (520) of the line marking mechanism touches the ground. Then, hold the handle (432) by hand and push the line marking mechanism to make the rotating disk (520) of the line marking mechanism move along the laser emission direction until the line marking mechanism returns to the initial marking rod (100), that is, the line marking work is completed. Step 4: After the line marking work is completed, remove the marking rod (100) and the line marking mechanism.

8. The construction method of the construction layout device for road and bridge site excavation according to claim 7, characterized in that, The filling amount of lime powder in Step 2 is lower than the height of the exhaust assembly (830).

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