CN118162317B - Spraying device in highway metal beam column type bridge guardrail crossbeam - Google Patents

Abstract

The invention discloses a spraying device in a guardrail beam of a highway metal beam column type bridge, and particularly relates to the field of spraying of inner cavities of guardrail beams. According to the invention, the supporting mechanism is arranged, so that the device can automatically position and support the interiors of the cross beams with different shapes and pipe diameters, the problem that the device can only be positioned in the interiors of the cross beams with cylindrical or symmetrical shapes in the prior art is avoided, and the device is more convenient for practical use.

Description

Spraying device in highway metal beam column type bridge guardrail crossbeam

Technical Field

The invention relates to the technical field of spraying of inner cavities of guardrail beams, in particular to a spraying device in a guardrail beam of a highway metal beam column type bridge.

Background

The bridge guardrail is a guardrail arranged on a bridge, and aims to prevent a vehicle out of control from going out of the bridge, and has the functions of making the vehicle unable to break through, run down, cross the bridge and beautify bridge buildings.

The Chinese patent with the application number 202211257128.7 discloses an electrostatic spraying device for the inner wall of a pipe fitting, which comprises the pipe fitting, two three-jaw chucks and a rotating motor, wherein the two three-jaw chucks are used for fixing the pipe fitting and driving the pipe fitting to rotate; the spray pipe penetrates through the middle of the two three-jaw chucks and the positioning mechanism is used for positioning the spray pipe, the front end of the spray pipe is provided with a plurality of electrostatic spray heads perpendicular to the axis of the pipe fitting, and dust removal discs are arranged on two sides of each electrostatic spray head; the invention is characterized in that the positioning mechanism comprises a jacking column and a stress sleeve, wherein the jacking column is matched and clamped with the front end surface of the spraying pipe, the stress sleeve is sleeved outside the jacking column, and at least three positioning components are arranged between the jacking column and the stress sleeve.

However, in the prior art, a plurality of spraying devices cannot be adaptively adjusted according to different pipe diameters, and only the inner wall of a cylindrical or symmetrical guardrail can be positioned and supported, if the pipe diameter and the shape of a pipeline are changed, on one hand, the adjusting cannot be performed according to the pipe diameter length, and on the other hand, the inside of a D-shaped pipe cross beam with a protruding part cannot be stably supported, so that the use flexibility of spraying equipment is easily influenced, the actual working process is influenced, the operation of the spraying equipment in a pipe fitting is influenced by the pipe diameter and the distance between a spray head and the surface to be sprayed, and because of the long and narrow special property of the pipe fitting, the spraying distance is too short, the speed of spraying airflow is higher, so that the spray layer is corrugated, and if the spraying distance is too large, excessive and scattered spray is formed, so that the coating is not uniformly sprayed.

Disclosure of Invention

In order to overcome the defects in the prior art, the embodiment of the invention provides the spraying device in the cross beam of the road metal beam column type bridge guardrail, and the first supporting piece and the second supporting piece which can be used for deflection adjustment are arranged, so that the device can automatically position and support the inside of the cross beam with different shapes and pipe diameters, and the problems in the background art are solved.

In order to achieve the above purpose, the present invention provides the following technical solutions: an in-beam spraying device for a highway metal beam column type bridge guardrail, comprising:

the main body mechanism comprises a first sleeve, the inner cavity of the first sleeve is fixedly connected with a second sleeve, and the main body mechanism is placed in the inner cavity of the guardrail beam;

The spraying mechanism is arranged at the rear end of the main body mechanism and comprises a coating bin fixedly connected to one end of the first sleeve, one side of the coating bin is hinged with a plurality of spraying pipes, and one end of each spraying pipe is communicated with a spray head for spraying the inner wall of the guardrail;

The support mechanism is arranged in a plurality, each support mechanism is arranged on the outer side of the main body mechanism, each support mechanism is provided with a first roller and a second roller which can roll along the axis of the guardrail, and an auxiliary wheel which can roll along the circumference of the inner wall of the guardrail, the support mechanism is used for supporting the main body mechanism in the inner cavity of the crossbeam of the guardrail and can move or rotate relative to the inner wall of the guardrail, each support mechanism comprises a plurality of positioning grooves formed in the inner part of a first sleeve, each positioning groove is fixedly connected with a guide frame on two sides, slide bars are slidably connected in the guide frames, two first supporting pieces are rotatably connected to the outer wall of each slide bar, each first supporting piece is rotatably connected with a second supporting piece on the outer wall of each first supporting piece, one side, far away from the slide bar, of each first supporting piece is rotatably connected with a second roller, and one side of each second supporting piece is rotatably connected with a first roller.

The cleaning mechanisms are arranged in plurality and each cleaning mechanism is arranged in front of the spraying mechanism and used for cleaning before the spraying mechanism sprays the inner cavity of the guardrail beam;

When the spray head sprays paint, the first roller and the second roller can be separated from contact with the guardrail.

Preferably, two ends of each second supporting piece are respectively connected with driving wheels in a rotating mode, two driving wheels far away from the first roller rotate coaxially in the positioning groove, driving wheels close to two sides of the first roller are fixedly connected with the first roller coaxially, and two driving wheels arranged at two ends of each second supporting piece are connected through a driving belt in a driving mode.

Preferably, a first gear is coaxially and fixedly arranged between driving wheels arranged at two sides of the first roller, the first gear is connected with a second gear in a meshed manner, and two sides of the second gear are respectively and rotatably connected with a third supporting piece fixedly connected with the second sleeve.

Preferably, the outer wall of the first sleeve is annular, a plurality of limiting frames which are arranged in a vertical state are fixedly connected at equal intervals in sequence, each limiting frame is internally and slidably connected with a sliding frame, and two sides of the sliding frame are rotatably connected with auxiliary wheels.

Preferably, each spraying pipe is close to a pull rod fixedly connected with one end outer wall of the coating bin, the coating bin is in an annular arrangement, a first material guiding pipe is communicated with the inner wall of the coating bin, one end of the first material guiding pipe, which is far away from the coating bin, is communicated with a connecting piece, a second material guiding pipe is communicated with a feed inlet of the connecting piece, one end, which is far away from the connecting piece, of the second material guiding pipe is provided with a supply bin, and the supply bin is fixedly connected with an inner cavity of the second sleeve.

Preferably, one side of the spraying pipe is hinged with a supporting rod, a gas collecting part is fixedly sleeved on the outer wall of the spraying pipe, which is close to the coating bin, a cavity is formed in the gas collecting part, a piston is connected in the cavity in a sliding manner, the piston is fixedly connected with a movable ring, a sealing ring and a limiting ring are respectively and fixedly connected to the relative positions of the spraying pipe and the gas collecting part, a blocking piece is arranged between the sealing ring and the limiting ring, a plurality of transmission rods are fixedly connected to the side wall of the blocking piece, a through groove communicated with the gas collecting part is formed in the position of the spraying pipe, which is close to the movable ring, a plurality of transmission rods penetrate through the through groove and are fixedly connected with the movable ring, one end of the coating bin is fixedly connected with a fixing frame, a first air cylinder corresponding to the spraying pipe is fixedly connected to the inner cavity of the fixing frame, and one end of a piston rod of the first air cylinder is fixedly connected with one end of the supporting rod.

Preferably, the guide rod for sliding guide of the sliding rod is fixedly connected in the guide frame, the guide rod is sleeved with an elastic piece, two ends of the elastic piece are fixedly connected with the outer wall of the sliding rod and the inner wall of the guide frame respectively, one side of each guide frame is fixedly connected with a fixing plate respectively, two second air cylinders are fixedly connected on the fixing plates between the guide frames, the sliding rod is sleeved with a pull ring, and one end of a telescopic rod of each second air cylinder is fixedly connected with the pull ring.

Preferably, the cleaning mechanism comprises a third air cylinder fixedly connected to the outer wall of the paint bin and uniformly distributed, a dust accumulation cover is fixedly connected to the telescopic tail end of the third air cylinder, a cleaning brush is rotationally connected to the dust accumulation cover, a driving piece for driving the cleaning brush to rotate is fixedly connected to one side of the dust accumulation cover, a connecting pipe is fixedly connected to one end of the dust accumulation cover, which is close to the spray head, an air extraction end of the connecting pipe is communicated with the bottom of the dust accumulation cover, a fourth air cylinder is fixedly connected to one side of the connecting pipe, a control rod for adjusting the size of the air inlet section of the third air cylinder is hermetically and slidably inserted in the position corresponding to the spray pipe, and one end of the control rod is hinged to the pull rod through a connecting rod.

Preferably, the inside fixedly connected with of locating part is the gag lever post that vertical state set up, balladeur train sliding connection is at the outer wall of gag lever post, and every all be connected with the spring between balladeur train and the locating part.

Preferably, the air outlet of the second air cylinder is communicated with the air inlet of the first air cylinder through a pipe fitting, the air outlet of the first air cylinder is communicated with the air inlet of the air collecting piece through a pipe fitting, and a spring is connected between the bottom of the blocking piece and the limiting ring.

The invention has the technical effects and advantages that:

according to the invention, gas in the second air cylinder enters the air inlet of the first air cylinder through the pipeline, so that the piston and the piston rod of the first air cylinder extend, the supporting rod gradually reduces the included angle between the spray pipe and the end face of the paint bin, the inclination angle between the first supporting piece and the second supporting piece is changed through the retraction of the piston rod of the second air cylinder, meanwhile, different inner cavity sizes of the guardrail cross beam can be adapted, the spray pipe and the second supporting piece are synchronously changed through the supporting rod, the spray head is kept at a proper distance from the inner wall of the guardrail, the spray distance is prevented from being too short, the speed of spray air flow is higher, the coating is corrugated, the spray distance is too large, the phenomenon of orange peel or uneven spray is caused, the spray head and the inclined angle of the spray pipe is synchronously changed along with the synchronous displacement of the sliding rod, so that the spray head and the inner wall of the guardrail are always kept at a proper distance, and the problem that when the D-shaped or wave-shaped guardrail inner wall is used, the protruding part of the guardrail is far away from the spray is evenly coated and the coating is not comprehensive is avoided.

According to the invention, the piston of the second air cylinder and the piston rod extend out, the piston rod drives the pull ring to move together, the pull ring enables the slide rod to slide on the outer wall of the guide rod, the elastic piece is stretched, the inclination angle between the first supporting piece and the second supporting piece is changed, the first roller and the second roller are separated from the inner wall of the guardrail, and the problems of scratching the inner wall of the guardrail and falling of abrasion matters of the first roller and the second roller caused by contact friction between the first roller and the second roller and the inner wall of the guardrail are prevented, so that the main body mechanism can be stably supported and operated in the guardrail, and stable spraying can be ensured.

According to the invention, the air in the cavity of the first air cylinder, which is close to one side of the piston rod, is compressed, compressed air returns to the inner cavity of the air collecting piece again through the pipeline and enables the piston to drive the transmission rod to move, the transmission rod drives the blocking piece to move, and meanwhile, the spring is reset to further drive the blocking piece to be in contact with the chamfer surface of the sealing ring and in a complete fit state, so that the coating in the spraying pipe is stopped, and the problem that the residual material remained in the spraying pipe flows out of a drier after the spraying of the spray head is finished, and the next spraying is influenced is prevented.

The invention reduces the included angle between the spray pipe and the end surface of the paint bin, and simultaneously, the pull rod pushes the control rod to move in the third air cylinder through the connecting rod, the cross section of the air inlet of the third air cylinder is gradually enlarged while the control rod moves, the air inlet of the third air cylinder is communicated with the control end of the air compressor through a pipeline, the pipeline is internally provided with the overflow valve, the control end of the overflow valve is also communicated with the fourth air cylinder through the pipeline, the third air cylinder is ventilated to enable the dust accumulation cover to move with the cleaning brush, the driving piece and the connecting pipe with the fourth air cylinder, when the cleaning brush moves to contact with the inner wall of the guardrail under the action of the third air cylinder, the piston rod of the fourth air cylinder contacts with the inner wall of the guardrail and retracts, the air in the fourth air cylinder is compressed, and the air inlet of the third air cylinder is driven to be regulated with the overflow valve in the pipeline of the control end of the air compressor, make through overflow valve's gas grow, make the clearance brush remain contact state with the guardrail inner wall all the time, and prevent laying dust cover touching guardrail inner wall, simultaneously air compressor's control end and driving piece and pneumatic dust catcher pass through the pipeline intercommunication and ventilate, the clearance brush is high-speed rotatory under the effect of driving piece, the clearance brush is clear away the dust and the impurity of guardrail inner wall, the dust is thrown to laying dust cover inner bottom with the impurity under the effect of centrifugal force, external pneumatic dust catcher and take out dust and impurity in the laying dust cover through the connecting pipe and collect, guarantee the roughness and the clean and tidy degree of guardrail inner wall, further improve comprehensiveness and homogeneity to spouting in the guardrail crossbeam, prevent inside corrosion of crossbeam, influence the life of guardrail.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present invention.

Fig. 2 is a schematic illustration of the present invention spraying the interior of a beam.

Fig. 3 is a schematic view of the axial structure of the present invention.

Fig. 4 is a schematic view of a partial structure of the supporting mechanism of the present invention.

Fig. 5 is an enlarged view of the structure of the portion a of fig. 4 according to the present invention.

Fig. 6 is a front cross-sectional view of the overall structure of the present invention.

Fig. 7 is an enlarged view of the B section structure of fig. 6 according to the present invention.

Fig. 8 is an enlarged view of the C-section structure of fig. 6 according to the present invention.

Fig. 9 is an enlarged view of the D portion structure of fig. 6 according to the present invention.

The reference numerals are: 1. a main body mechanism; 101. a first sleeve; 102. a second sleeve; 103. a limiting frame; 104. a carriage; 105. an auxiliary wheel; 106. a limit rod; 107. a spring; 2. a spraying mechanism; 21. a coating bin; 22. a spraying pipe; 221. a pull rod; 222. a support rod; 223. a gas collecting member; 224. a piston; 225. a moving ring; 226. a seal ring; 227. a limiting ring; 228. a blocking piece; 229. a transmission rod; 23. a spray head; 24. a first material guide pipe; 25. a connecting piece; 26. a second material guiding pipe; 27. a replenishment bin; 28. a fixing frame; 29. a first air cylinder; 3. a support mechanism; 31. a positioning groove; 32. a guide frame; 321. a guide rod; 322. an elastic member; 323. a fixing plate; 324. a second air cylinder; 33. a slide bar; 331. a pull ring; 34. a first support; 35. a second support; 36. a first roller; 37. a second roller; 38. a driving wheel; 39. a transmission belt; 310. a first gear; 311. a second gear; 312. a third support; 4. a cleaning mechanism; 41. a third air cylinder; 42. a dust cover; 43. cleaning brushes; 44. a driving member; 45. a connecting pipe; 46. a fourth air cylinder; 47. a control lever; 48. and (5) connecting a rod.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

Referring to fig. 1 and 2 of the specification, a spraying device in a guardrail beam of a highway metal beam column type bridge according to an embodiment of the invention comprises a main body mechanism 1, wherein the main body mechanism 1 is used for being placed in an inner cavity of the guardrail beam.

The spraying mechanism 2 is fixedly connected to the rear end of the main body mechanism 1, and the inner wall of the guardrail is sprayed through the spraying mechanism 2; the supporting mechanism 3, a plurality of supporting mechanism 3 fixed connection are at the outer wall of main part mechanism 1, and supporting mechanism 3 is used for main part mechanism 1 to support main part mechanism at the inner chamber of guardrail crossbeam, and clearance mechanism 4, a plurality of clearance mechanism 4 fixed connection are in the place ahead of spraying mechanism 2, and clearance mechanism 4 is used for the pretreatment before spraying mechanism 2 to guardrail crossbeam inner chamber spraying work.

Referring to fig. 3 and 6, the body mechanism 1 includes a first sleeve 101, and a second sleeve 102 is fixedly connected to an inner cavity of the first sleeve 101. As shown in fig. 1 and fig. 7, the supporting mechanism 3 includes a plurality of positioning slots 31 formed in the first sleeve 101, two sides of each positioning slot 31 are fixedly connected with guide frames 32, as shown in fig. 4 and fig. 5, each guide frame 32 is slidably connected with a sliding rod 33, two first supporting members 34 are rotatably connected to the outer wall of each sliding rod 33, second supporting members 35 are rotatably connected to the outer wall of each first supporting member 34, a second roller 37 is rotatably connected to one side, far away from the sliding rod 33, of each first supporting member 34, and a first roller 36 is rotatably connected to one side of each second supporting member 35. The second supporting member 35 is provided with a rectangular slot in a penetrating manner, the first supporting member 34 is slidably connected in an inner cavity of the rectangular slot and is in a cross connection with the second supporting member 35, the cross positions of the first supporting member 34 and the second supporting member 35 are all arranged on horizontal center points of the first supporting member 34 and the second supporting member 35, and when the cross state between the first supporting member 34 and the second supporting member 35 in a normal state is arranged, the first roller 36 and the second roller 37 are closest to the outer wall of the first sleeve 101. After the first sleeve 101 is integrally placed into the cross beam, the plurality of supporting mechanisms 3 are arranged, so that the corresponding first roller 36 and second roller 37 are attached to the inner wall of the guardrail, the first supporting piece 34 and the second supporting piece 35 can be pressed against each other, then the angle between the first supporting piece 34 and the second supporting piece 35 is changed, meanwhile, the first supporting piece 34 pushes the sliding rod 33 to slide in the inner cavity of the guide frame 32, the sliding rod 33 is integrally and gradually far away from the second roller 37, the corresponding first supporting piece 34 and second supporting piece 35 can be integrally and adaptively deflected and adjusted, and therefore the first roller 36 and the second roller 37 are attached to the inner wall of the guardrail, and the first roller 36 and the second roller 37 can roll along the axis of the guardrail; and combine a plurality of supporting mechanism 3 that first sleeve 101 outer wall set up, when guardrail inner wall shape was D font or wave form, a plurality of first gyro wheels 36 and the second gyro wheel 37 that correspond that first sleeve 101 outer wall set up when taking place to contact with the different positions of guardrail inner wall, through the difference of guardrail inner wall and first sleeve 101 outer wall distance for the angle adjustment that the intersection angle takes place to differ between first support piece 34 and the second support piece 35, can make this device can nimble steady support in the inside of guardrail, overcome traditional similar device and only can be at the problem of the inside use of cylindric or symmetrical shape's crossbeam, make this device's flexibility of use stronger.

Referring to fig. 4, two ends of each second supporting member 35 are respectively rotatably connected with a driving wheel 38, the driving wheels 38 arranged near two sides of the first roller 36 are coaxially and fixedly connected with the first roller 36, and two driving wheels 38 arranged at two ends of each second supporting member 35 are in driving connection through a driving belt 39; referring to fig. 5, a first gear 310 is coaxially and fixedly arranged between driving wheels 38 arranged at two sides far away from a first roller 36, the first gear 310 is in meshed connection with a second gear 311, two sides of the second gear 311 are rotationally connected with third supporting pieces 312 fixedly connected with a second sleeve 102, one side of each third supporting piece 312 is fixedly connected with a motor for driving the second gear 311 to rotate, the motor is electrified to rotate so as to drive the second gear 311 to rotate, the second gear 311 drives the first gear 310 to rotate, the first gear 310 drives the driving wheels 38 to rotate, and the driving belt 39 can synchronously drive the first roller 36 to rotate so as to drive the first roller 36 to move on the inner wall of the guardrail, so that the device can be self-adaptively attached to the inner wall of the guardrail for moving. Meanwhile, when the first roller 36 and the second roller 37 are deflected by the pressing force of the inner wall of the guardrail, the second supporting piece 35 can be more stable when deflected by the mutual meshing of the first gear 310 and the second gear 311, so that the first supporting piece 34 and the second supporting piece 35 at a plurality of different positions can be moved more stably when being pressed and offset and adjusted by the inner wall of the guardrail.

Referring to fig. 3 and 6, a plurality of limit frames 103 which are arranged in a vertical state are fixedly connected to the outer wall of the first sleeve 101 in an annular and sequentially equidistant state, a sliding frame 104 is slidably connected to the inside of each limit frame 103, two sides of the sliding frame 104 are rotatably connected with auxiliary wheels 105, a limit rod 106 which is arranged in a vertical state is fixedly connected to the inside of each limit frame 103, the sliding frame 104 is slidably connected to the outer wall of the corresponding limit rod 106, a spring 107 is connected between the sliding frame 104 and the corresponding limit frame 103, and when the spring 107 is in a natural state, the limit rod 106 is in an extending state and supports the sliding frame 104 to integrally move to the position where the limit frames 103 and the limit rod 106 are far away from one side of the outer wall of the first sleeve 101, so that the distance between the auxiliary wheels 105 and the first sleeve 101 is in the longest state. When the first sleeve 101 is integrally placed into the cross beam for spraying, the auxiliary wheels 105 can roll circumferentially relative to the inner wall of the guardrail through the contact of the plurality of auxiliary wheels 105 and the different positions of the inner wall of the guardrail, and when the distances between the inner wall of the guardrail and the outer wall of the first sleeve 101 are different, the corresponding auxiliary wheels 105 are synchronously pressed against, so that the corresponding sliding frame 104 is pressed against the limiting rod 106 to move upwards and slide in the limiting frame 103, and the auxiliary wheels 105 in a plurality of directions on the outer wall of the first sleeve 101 can be synchronously limited against the inner wall of the guardrail. When the crossing angle between the first supporting members 34 and the second supporting members 35 is reduced and the first supporting members 34 and the second supporting members 35 are far away from the direction of the limiting frame 103, the balance stability of the whole first sleeve 101 is affected, and the outer wall of the first sleeve 101 can be supported in an auxiliary manner by combining the arrangement of the auxiliary wheels 105 capable of moving up and down, so that the stability of the first sleeve 101 in the adjusting state is maintained.

As shown in fig. 3, the spraying mechanism 2 is disposed at the rear end of the main body mechanism 1, the spraying mechanism 2 includes a coating bin 21 fixedly connected to one end of the first sleeve 101, the coating bin 21 is disposed in a ring shape, one side of the coating bin 21 is hinged with a plurality of spraying pipes 22, one ends of the spraying pipes 22 are all communicated with a spray head 23, one end outer wall of the spraying pipe 22 close to the coating bin 21 is fixedly connected with a pull rod 221, a first material guiding pipe 24 is disposed on the inner wall of the coating bin 21 in a communicating manner, one end of the first material guiding pipe 24 far away from the coating bin 21 is communicated with a connecting piece 25, the connecting piece 25 is connected with an external high-pressure pump through a pipeline, an air compressor for the external high-pressure pump is used as a power source, a feeding port of the connecting piece 25 is communicated with a second material guiding pipe 26, one end of the second material guiding pipe 26 far away from the connecting piece 25 is communicated with a supply bin 27, and the supply bin 27 is fixedly connected with an inner cavity of the second sleeve 102. When the spraying device is used, the inner cavity of the supplying bin 27 is filled with spraying agent, the external high-pressure pump can pump the spraying agent in the inner cavity of the supplying bin 27 into the inner cavity of the coating bin 21 through the connecting piece 25 and the second material guiding pipe 26 by starting the air compressor, and the spraying agent is dispersed and sprayed to different ranges of the inner wall of the guardrail through the corresponding spraying pipe 22 through the spray head 23.

Referring to fig. 6 and 7, a supporting rod 222 is hinged to one side of the spraying pipe 22, one end of the coating bin 21 is fixedly connected with a fixing frame 28, an inner cavity of the fixing frame 28 is fixedly connected with a first air cylinder 29 corresponding to the spraying pipe 22, one end of a piston rod of the first air cylinder 29 is fixedly connected with one end of the supporting rod 222, when the inclination angle between the first supporting piece 34 and the second supporting piece 35 is changed, the whole inclination angle of the spraying pipe 22 is synchronously changed, the height of the spray head 23 is synchronously changed, so that the spray head 23 and the inner wall of the guardrail are always kept at a proper distance, and the problem that when the D-shaped or wave-shaped inner wall of the guardrail is used, the protruding part of the inner wall of the guardrail is far away from the spray head 23, and then the spray coating uniformity and the incomplete coating are affected is avoided.

Referring to fig. 7 and 8, a guide rod 321 for sliding and guiding the slide rod 33 is fixedly connected in the guide frame 32, an elastic piece 322 is sleeved on the guide rod 321, two ends of the elastic piece 322 are fixedly connected with the outer wall of the slide rod 33 and the inner wall of the guide frame 32 respectively, a fixed plate 323 is fixedly connected to one side of each guide frame 32 respectively, a second air cylinder 324 is fixedly connected to the fixed plate 323 between the two guide frames 32, a pull ring 331 is sleeved on the slide rod 33, one end of a telescopic rod of the second air cylinder 324 is fixedly connected with the pull ring 331, an air outlet of the second air cylinder 324 is communicated with an air inlet of the first air cylinder 29, and the elastic piece 322 is a spring.

In summary, the embodiment is that the main body mechanism 1 is placed at the bottommost end of the inner cavity of the guardrail beam by the traction device, and it should be noted that the guardrail to be processed is clamped in the air chuck, wherein the air chuck is fixed on the air motor, the air motor and the air chuck are arranged in a hollow state, so that the main body mechanism 1 is placed into the inner cavity of the guardrail beam by the air motor and the air chuck, the air chuck is selected as a three-grip chuck at the lowest, and the cooperation of the air chuck and the air motor ensures that the guardrail beam is in a rotating state when spraying the inner cavity of the guardrail beam; the purpose that sets up like this is, and rotatory guardrail makes the paint surface of spraying paste the guardrail crossbeam inner chamber tightly under the effect of centrifugal force uniformly, prevents that the phenomenon of sagging from appearing in paint surface, and draw gear, air chuck and air motor are the micro-structure among the prior art, do not make excessive repetition here. The elastic piece 322 is a spring, the pulling force of the elastic piece 322 pulls the sliding rod 33 to the inner wall of the guide frame 32, the piston of the second air cylinder 324 moves and retracts together with the piston rod, the piston rod drives the pull ring 331 to move together, the pull ring 331 enables the sliding rod 33 to slide on the outer wall of the guide rod 321, the inclination angle between the first support piece 34 and the second support piece 35 is changed, meanwhile, the air outlet of the second air cylinder 324 is communicated with the air inlet of the first air cylinder 29 through a pipeline, the piston of the second air cylinder 324 and the piston rod do retracting movement, meanwhile, the air in the second air cylinder 324 enters the air inlet of the first air cylinder 29 through the pipeline, the piston of the first air cylinder 29 and the piston rod do extending movement, the supporting rod 222 and the piston rod of the first air cylinder 29 do extending movement, the supporting rod 222 enables the included angle between the spraying pipe 22 and the end face of the paint bin 21 to be gradually reduced, the inclination angle between the first support piece 34 and the second support piece 35 is changed through retracting of the piston rod of the second air cylinder 324, and the beam inner cavities with different sizes of guardrails can be adapted; simultaneously, the support rods 222 enable the spraying pipe 22 and the second supporting piece 35 to synchronously change, the external high-pressure pump extracts the spraying agent in the inner cavity of the replenishing bin 27 into the inner cavity of the coating bin 21 through the connecting piece 25 and the second material guiding pipe 26, and the spraying agent is dispersed and sprayed to different ranges of the inner wall of the guardrail through the corresponding spraying pipe 22 through the spray heads 23; the spray head 23 keeps a proper distance from the inner wall of the guardrail, so that the phenomenon that the coating is corrugated and uneven orange peel or spraying is caused by too short spraying distance or higher spraying airflow speed is prevented. When the spraying is finished, the air compressor pump stops supplying air, and the spray head 23 stops spraying.

Example 2

When the spray head 23 is used for spraying the inner wall of the guardrail, the first roller 36 and the second roller 37 are contacted and rubbed with the inner wall of the guardrail due to the rotation of the guardrail during spraying, so that the inner wall of the guardrail is scratched and the abrasion of the first roller 36 and the second roller 37 is easy to fall off, the falling off substances easily fall onto the spraying surface, a paint film on the spraying surface is easy to fall off and damaged, and the residual materials left in the spraying pipe 22 flow out of the drier after the spray head 23 is sprayed, the next spraying is affected, and further improvement is made on the basis of the embodiment.

Referring to fig. 6 and 8, a gas collecting member 223 is fixedly sleeved on the outer wall of the spraying pipe 22, which is close to the coating bin 21, a chamber is formed in the gas collecting member 223, a piston 224 is connected in a sealing sliding manner in the chamber, the piston 224 is fixedly connected with a movable ring 225, a sealing ring 226 and a limiting ring 227 are respectively and fixedly connected at the opposite positions of the spraying pipe 22 and the gas collecting member 223, a blocking member 228 is arranged between the sealing ring 226 and the limiting ring 227, a plurality of transmission rods 229 are fixedly connected to the side wall of the blocking member 228, a through groove communicated with the gas collecting member 223 is formed in the position of the spraying pipe 22, which is close to the movable ring 225, a plurality of transmission rods 229 penetrate through the through groove and are fixedly connected with the movable ring 225, a spring is connected between the bottom of the blocking member 228 and the limiting ring 227, chamfering treatment is carried out at the contact positions of the sealing ring 226 and the blocking member 228, and the chamfer surface is in a complete fitting state when the blocking member 228 is contacted with the sealing ring 226.

When in use, the external high-pressure pump extracts the spray agent in the inner cavity of the replenishing bin 27 into the inner cavity of the coating bin 21 through the connecting piece 25 and the second material guide pipe 26, and the spray agent reaches the position of the blocking piece 228 through the corresponding spray pipe 22 for dispersed spraying through the spray nozzle 23, wherein the high-pressure spray agent firstly reaches the position of the blocking piece 228, the high-pressure spray agent impacts the contact position of the blocking piece 228 and the sealing ring 226, the spring between the bottom of the blocking piece 228 and the limiting ring 227 is compressed, the blocking piece 228 and the sealing ring 226 are in a non-contact state at the same time, the high-pressure spray agent flows out through gaps between the blocking piece 228 and the sealing ring 226 and flows into the position of the spring through gaps among the plurality of transmission rods 229, the high-pressure paint in the spray pipe 22 is sprayed out through a spray head 23; At the same time, the blocking piece 228 drives the transmission rod 229 and the moving ring 225 to move, the moving ring 225 drives the piston 224 to move, the piston 224 moves and presses the chamber in the gas collecting piece 223, air in the chamber is compressed, compressed air is conveyed to the chamber, close to one side of the piston rod, of the gas outlet of the first gas cylinder 29 through a pipeline, the piston in the first gas cylinder 29 is compressed together with the piston rod to retract, meanwhile, air in the chamber, far from one side of the piston rod, in the first gas cylinder 29 is compressed, conveyed to the chamber, far from one end of the piston rod, of the second gas cylinder 324 through a pipeline, and the piston of the second gas cylinder 324 is extended together with the piston rod, The piston rod drives the pull ring 331 to move together, the pull ring 331 enables the slide bar 33 to slide on the outer wall of the guide rod 321, the elastic piece 322 is stretched, the inclination angle between the first supporting piece 34 and the second supporting piece 35 is changed, the first roller 36 and the second roller 37 are separated from the inner wall of the guardrail, and the problems that the inner wall of the guardrail is scratched and abrades of the first roller 36 and the second roller 37 fall off due to contact friction between the first roller 36 and the second roller 37 and the inner wall of the guardrail are prevented. When the spraying is finished, the air compressor stops supplying air, the pulling force of the elastic piece 322 pulls the sliding rod 33 to the inner wall of the guide frame 32, the piston of the second air cylinder 324 moves and retracts together with the piston rod, the piston rod drives the pull ring 331 to move together, and the pull ring 331 enables the sliding rod 33 to slide on the outer wall of the guide rod 321, so that the inclination angle between the first supporting piece 34 and the second supporting piece 35 is changed; Meanwhile, the air outlet of the second air cylinder 324 is communicated with the air inlet of the first air cylinder 29 through a pipeline, the piston and the piston rod of the second air cylinder 324 are retracted, and meanwhile, the air in the second air cylinder 324 enters the air inlet of the first air cylinder 29 through the pipeline, so that the piston and the piston rod of the first air cylinder 29 are extended, the supporting rod 222 and the piston rod of the first air cylinder 29 are extended, the air in the cavity of the first air cylinder 29, which is close to one side of the piston rod, is compressed, the compressed air returns to the inner cavity of the air collecting piece 223 through the pipeline again, and the piston 224 drives the transmission rod 229 to move, the transmission rod 229 drives the blocking piece 228 to move, Meanwhile, the spring is reset to further drive the blocking piece 228 to be in contact with the chamfer surface of the sealing ring 226 and completely fit the sealing ring, so that the paint in the spraying pipe 22 is stopped, and the problem that the residual material left in the spraying pipe 22 flows out of a drier after the spraying of the spray head 23 is finished and the next spraying is affected is solved.

Example 3

During the in-service use, discover, deposit in the warehouse after guardrail production, receive the influence of atmospheric humiture and surrounding environment, the dust then can appear in guardrail inner wall, serious then can appear the phenomenon of corrosion, because guardrail structure's particularity, the guardrail is long and thin state, just lean on simple clearance instrument then can't thoroughly clear away the impurity in the guardrail, the guardrail inner wall is covered by the film when the spraying, later through the influence of transportation and service environment, the impurity in the film appears becoming flexible and drops, then the anticorrosive anti-oxidation effect of direct influence guardrail inner wall, in order to solve above-mentioned problem, to do the preliminary treatment before the spraying of guardrail crossbeam inner chamber, make further improvement on the basis of above-mentioned embodiment.

Referring to fig. 2 and 9, the cleaning mechanism 4 includes a third air cylinder 41 fixedly connected to the outer wall of the coating bin 21 and uniformly distributed, a dust accumulation cover 42 is fixedly connected to the telescopic end of the third air cylinder 41, a cleaning brush 43 is rotatably connected to the dust accumulation cover 42, a driving member 44 for driving the cleaning brush 43 to rotate is fixedly connected to one side of the dust accumulation cover 42, the driving member 44 is a pneumatic motor, and a connecting pipe 45 is fixedly connected to one end of the dust accumulation cover 42 close to the spray head 23; it should be noted that, the air outlet of the connecting pipe 45 is communicated with the air suction port of the external pneumatic dust collector through a pipeline, the pneumatic dust collector is communicated with the control end of the air compressor through a pipeline, the pneumatic dust collector is not excessively described in the prior art, the air suction end of the connecting pipe 45 is communicated with the bottom of the dust accumulation cover 42, the driving piece 44 is communicated with the control end of the air compressor through a pipeline, a fourth air cylinder 46 is fixedly connected to one side of the connecting pipe 45, a control rod 47 for adjusting the air inlet section size of the third air cylinder 41 is hermetically and slidingly inserted at the corresponding position of each third air cylinder 41 and the spraying pipe 22, one end of the control rod 47 is hinged with the pull rod 221 through a connecting rod 48, the first air cylinder 29 and the third air cylinder 41 are multi-stage cylinders, and the purpose of the arrangement is to compensate the telescopic length of the piston rod of the first air cylinder 29 and the third air cylinder 41.

When the device is actually used on the basis of the embodiment, the main body mechanism 1 is placed at the topmost end of the inner cavity of the guardrail beam by the traction device, the pulling force of the elastic piece 322 pulls the sliding rod 33 to the inner wall of the guide frame 32, the piston of the second air cylinder 324 moves and retracts together with the piston rod, the piston rod drives the pull ring 331 to move together, and the pull ring 331 enables the sliding rod 33 to slide on the outer wall of the guide rod 321, so that the inclination angle between the first supporting piece 34 and the second supporting piece 35 is changed; simultaneously, the air outlet of the second air cylinder 324 is communicated with the air inlet of the first air cylinder 29 through a pipeline, the piston and the piston rod of the second air cylinder 324 are retracted, the air in the second air cylinder 324 enters the air inlet of the first air cylinder 29 through the pipeline, the piston and the piston rod of the first air cylinder 29 are extended, the supporting rod 222 enables the included angle between the spray pipe 22 and the end face of the paint bin 21 to be gradually reduced, the inclined angle between the first supporting piece 34 and the second supporting piece 35 is changed through the retraction of the piston rod of the second air cylinder 324, the spray pipe 22 and the end face of the paint bin 21 are reduced, the pull rod 221 pushes the control rod 47 to move in the third air cylinder 41 through the connecting rod 48, the air inlet section of the third air cylinder 41 is gradually increased while the control rod 47 moves, the air inlet of the third air cylinder 41 is communicated with the control end of the air compressor through the pipeline, and an overflow valve is arranged in the pipeline, wherein the control end of the overflow valve is also communicated with a fourth air cylinder 46 through the pipeline, the driving piece 44 is ventilated through the control end of the air compressor, the third air cylinder 41 is ventilated to enable the dust accumulation cover 42 to move together with the cleaning brush 43, the driving piece 44, the connecting pipe 45 and the fourth air cylinder 46, when the cleaning brush 43 moves to be in contact with the inner wall of the guardrail under the action of the third air cylinder 41, at the moment, a piston rod of the fourth air cylinder 46 is in contact with and retracted from the inner wall of the guardrail, air in the fourth air cylinder 46 is compressed, and the air inlet of the third air cylinder 41 is driven to be regulated with the overflow valve in the pipeline at the control end of the air compressor, so that the air passing through the overflow valve is increased, the cleaning brush 43 is always kept in contact with the inner wall of the guardrail, the dust accumulation cover 42 is prevented from touching the inner wall of the guardrail, and the guardrail is rotated through the pneumatic motor under the action of the clamping of the pneumatic chuck, the main body mechanism 1 is gradually placed at the bottommost end of the inner cavity of the guardrail beam under the action of the traction device, when the main body mechanism 1 is placed, the cleaning brush 43 rotates at a high speed under the action of the driving piece 44, the cleaning brush 43 cleans dust and impurities on the inner wall of the guardrail, the dust and the impurities are thrown into the inner bottom of the dust accumulation cover 42 under the action of centrifugal force, the dust and the impurities in the dust accumulation cover 42 are sucked and collected by the external pneumatic dust collector through the connecting pipe 45, the flatness and the neatness of the inner wall of the guardrail are guaranteed, when the main body mechanism 1 cleans the bottommost end of the guardrail, the cleaning brush 43 cuts off the air source of the driving piece 44 and the connecting pipe 45 after the cleaning of the inner wall of the guardrail is completed, and the cleaning brush is matched with the embodiment 1 to pretreat the inner cavity of the guardrail beam before spraying, and the flatness and the neatness of the inner wall of the guardrail are guaranteed.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims (8)

1. Spraying device in highway metal beam column formula bridge guardrail crossbeam, its characterized in that includes:

the main body mechanism comprises a first sleeve, the inner cavity of the first sleeve is fixedly connected with a second sleeve, and the main body mechanism is placed in the inner cavity of the guardrail beam;

The spraying mechanism is arranged at the rear end of the main body mechanism and comprises a coating bin fixedly connected to one end of the first sleeve, one side of the coating bin is hinged with a plurality of spraying pipes, and one end of each spraying pipe is communicated with a spray head for spraying the inner wall of the guardrail;

The support mechanism is arranged in a plurality, each support mechanism is arranged on the outer side of the main body mechanism, each support mechanism is provided with a first roller and a second roller which can roll along the axis of the guardrail, and an auxiliary wheel which can roll along the circumference of the inner wall of the guardrail, the support mechanism is used for supporting the main body mechanism in the inner cavity of the crossbeam of the guardrail and can move or rotate relative to the inner wall of the guardrail, each support mechanism comprises a plurality of positioning grooves formed in the inner part of a first sleeve, each positioning groove is fixedly connected with a guide frame on two sides, slide bars are slidably connected in the guide frames, the outer wall of each slide bar is rotationally connected with two first supporting pieces, each first supporting piece is rotationally connected with a second supporting piece on the outer wall of each first supporting piece, one side, far away from the slide bar, of each second supporting piece is rotationally connected with the first roller;

The cleaning mechanisms are arranged in plurality and each cleaning mechanism is arranged in front of the spraying mechanism and used for cleaning before the spraying mechanism sprays the inner cavity of the guardrail beam;

The spray pipe is fixedly sleeved with a gas collecting piece close to the outer wall of the coating bin, a cavity is formed in the gas collecting piece, a piston is connected in the cavity in a sealing sliding manner, the piston is fixedly connected with a moving ring, a sealing ring and a limiting ring are respectively fixedly connected to the position, opposite to the gas collecting piece, of the spray pipe, a blocking piece is arranged between the sealing ring and the limiting ring, one end of the coating bin is fixedly connected with a fixing frame, an inner cavity of the fixing frame is fixedly connected with a first air cylinder corresponding to the spray pipe, one side of each guide frame is fixedly connected with a fixing plate, a second air cylinder is fixedly connected to the fixing plate between the two guide frames, an air outlet of the second air cylinder is communicated with an air inlet of the first air cylinder through a pipe, an air outlet of the first air cylinder is communicated with an air inlet of the gas collecting piece through a pipe, a spring is connected between the bottom of the blocking piece and the limiting ring, and the spray head can enable a first roller and a second roller to be separated from contact with a guardrail when spraying coating;

The guide rod is fixedly connected in the guide frame and used for guiding the sliding rod in a sliding mode, an elastic piece is sleeved on the guide rod, two ends of the elastic piece are fixedly connected with the outer wall of the sliding rod and the inner wall of the guide frame respectively, a pull ring is sleeved on the sliding rod, and one end of a telescopic rod of the second inflator is fixedly connected with the pull ring.

2. The in-beam spraying device for highway metal beam column type bridge guardrails according to claim 1, wherein: the two ends of each second supporting piece are respectively connected with driving wheels in a rotating mode, two driving wheels far away from the first roller rotate coaxially in the positioning groove, the driving wheels close to the two sides of the first roller are fixedly connected with the first roller coaxially, and the two driving wheels arranged at the two ends of each second supporting piece are connected through a driving belt in a driving mode.

3. The in-beam spraying device for highway metal beam column type bridge guardrails according to claim 2, wherein: the first gears are coaxially and fixedly arranged between driving wheels arranged at two sides far away from the first idler wheels, the first gears are connected with second gears in a meshed mode, and third supporting pieces fixedly connected with the second sleeves are rotatably connected to two sides of the second gears.

4. The in-beam spraying device for highway metal beam column type bridge guardrails according to claim 1, wherein: the outer wall of the first sleeve is provided with a plurality of limiting frames which are arranged in a vertical state and are fixedly connected with at equal intervals in an annular mode, the inside of each limiting frame is connected with a sliding frame in a sliding mode, and two sides of each sliding frame are connected with auxiliary wheels in a rotating mode.

5. The in-beam spraying device for highway metal beam column type bridge guardrails according to claim 1, wherein: every spout the material pipe is close to the one end outer wall fixedly connected with pull rod of scribbling the feed bin, scribble the feed bin and be annular setting, the intercommunication sets up first passage on the inner wall of scribbling the feed bin, first passage is kept away from scribble the one end intercommunication of feed bin has the connecting piece, the feed inlet intercommunication of connecting piece has the second passage, the second passage is kept away from the one end of connecting piece is equipped with the supply bin, supply bin fixed connection is at the telescopic inner chamber of second.

6. The in-beam spraying device for highway metal beam column type bridge guardrails according to claim 5, wherein: one side of the spraying pipe is hinged with a supporting rod, the side wall of the blocking piece is fixedly connected with a plurality of transmission rods, a through groove communicated with the inside of the gas collecting piece is formed in the position, close to the moving ring, of the spraying pipe, the transmission rods penetrate through the through groove and are fixedly connected with the moving ring, and one end of a piston rod of the first air cylinder is fixedly connected with one end of the supporting rod.

7. The in-beam spraying device for highway metal beam column type bridge guardrails according to claim 5, wherein: the cleaning mechanism comprises third air cylinders which are fixedly connected to the outer wall of the paint bin and uniformly distributed, the telescopic tail end of each third air cylinder is fixedly connected with a dust accumulation cover, a cleaning brush is rotationally connected to the dust accumulation cover, a driving piece for driving the cleaning brush to rotate is fixedly connected to one side of the dust accumulation cover, a connecting pipe is fixedly connected to one end of the dust accumulation cover, which is close to a spray head, an air extraction end of the connecting pipe is communicated with the bottom of the dust accumulation cover, a fourth air cylinder is fixedly connected to one side of the connecting pipe, a control rod for adjusting the size of the air inlet section of the third air cylinder is in sealing sliding connection with the corresponding position of the spray pipe, and one end of the control rod is hinged to the pull rod through a connecting rod.

8. The in-beam spraying device for highway metal beam column type bridge guardrails according to claim 4, wherein: the inside fixedly connected with of locating part is the gag lever post that vertical state set up, balladeur train sliding connection is at the outer wall of gag lever post, and every all be connected with the spring between balladeur train and the locating part.