CN210935551U - Polishing and coating device for arch ribs of concrete filled steel tube arch bridge - Google Patents

Abstract

The utility model discloses a polishing and coating device for steel pipe concrete arch bridge arch ribs, which relates to the technical field of bridge construction equipment and comprises a clamping and fixing component, a driving component, a walking component, two rust removing and polishing components and two anticorrosive coating components, wherein the clamping and fixing component comprises at least two pairs of clamps and connecting rods, the connecting rods are connected with the adjacent clamps, the driving component is connected with the two clamps in the same pair, the driving component is used for driving one clamp to rotate around the other clamp, the walking component is used for driving the clamping and fixing component to move along the arch ribs, the two rust removing and polishing components are respectively arranged on the two clamps at different sides, the rust removing and polishing component comprises a plurality of crawler-type polishing devices, the crawler-type polishing devices are used for polishing the arch ribs, the two anticorrosive coating components are arranged on the two clamps and are used for coating the arch ribs, the utility model can complete the rust removing and coating of, the potential safety hazard existing in manual operation is avoided.

Description

Polishing and coating device for arch ribs of concrete filled steel tube arch bridge

Technical Field

The utility model relates to a bridge construction equipment technical field, concretely relates to application device of polishing for steel pipe concrete arch bridge arch rib.

Background

The steel pipe concrete arch bridge belongs to one of steel-concrete composite structures, concrete is filled in a steel pipe, and the concrete is in a three-dimensional compression state due to the fact that the expansion of the compressed concrete is limited by radial constraint of the steel pipe, so that the compression strength of the concrete is obviously improved; the steel pipe has the functions of a longitudinal main rib and a transverse hoop, can be used as a construction template to facilitate concrete pouring, can be used as a stiff bearing framework in the construction process, is simple in welding work and light in hoisting weight, and therefore can simplify the construction process and shorten the construction period.

In addition, the steel pipe concrete arch bridge adopts a lattice truss structure, so that the bridge is small in self weight, high in material strength, high in terrain adaptability, good in economy, transparent in arch rib structure, small in wind blocking area and high in transverse stability. The steel pipe concrete arch bridge has the advantages of stress and construction, the bridge shape is rich in aesthetic feeling, the arc-shaped arch rib lines are simple and smooth, the bridge is attractive and slender, the whole bridge is light and simple, the hanger rods and various chord members enable the bridge to have dynamically-changed rhythm and rhythm, the large-span arch ribs have height and strength, the bridge has a great and spectacular vigor, and the bridge is full of life feeling, fullness and stability.

The steel tube of the concrete-filled steel tube arch bridge is easy to corrode and rust under the exposed condition, so that the later maintenance work of the steel structure is very important, but the maintenance difficulty of the concrete-filled steel tube arch rib is gradually highlighted along with the increasing span of the concrete-filled steel tube arch bridge. The large-span steel pipe concrete arch bridge arch rib is used for the large span and height of the steel pipe concrete arch bridge arch rib, and the maintenance and construction difficulty is large; especially, some urban rail transit bridges, railway bridges or highway bridges have strict requirements on construction time, limited construction measures and larger potential safety hazards in construction. In addition, if manual derusting and coating modes are adopted, the risk of high-altitude operation is faced, and the coating thickness is difficult to control. Therefore, it is necessary to develop a rust-removing, polishing and corrosion-preventing coating device for the steel tube concrete arch bridge arch rib, which is automatically and mechanically constructed.

SUMMERY OF THE UTILITY MODEL

To the defect that exists among the prior art, the utility model aims to provide a application device of polishing for steel pipe concrete arch bridge arch rib can accomplish the rust cleaning and the application of arch rib, the potential safety hazard that exists when avoiding manual operation.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

the utility model provides a painting device of polishing for steel pipe concrete arch bridge arch rib, be equipped with stull and jib on the arch rib, the painting device of polishing includes:

the clamping and fixing assembly comprises at least two pairs of clamps arranged at intervals and at least one connecting rod, an accommodating space matched with the arch rib is arranged between each pair of clamps, and the connecting rod is connected with the adjacent clamps on the same side;

the driving assembly is connected with the two grippers in the same pair and is used for driving one of the grippers which is not connected with the connecting rod to rotate around the other gripper;

the walking assembly is arranged on the clamping and fixing assembly and is used for driving the clamping and fixing assembly to move along the arch rib;

the two rust removing and polishing assemblies are respectively arranged on the two clampers at different sides, each rust removing and polishing assembly comprises a plurality of crawler-type polishing devices which are parallel and arranged along the movement direction of the clamping and fixing assembly, and the crawler-type polishing devices are used for polishing the arch ribs;

and the two anticorrosion coating components are respectively arranged on the two clamps at different sides and are used for coating the arch rib, and the anticorrosion coating components and the rust removal polishing components at the same side are sequentially arranged along the motion direction of the clamping fixed component.

On the basis of the technical scheme, the polishing and coating device further comprises a plurality of distance measuring assemblies, each distance measuring assembly is arranged on one of the clamping devices, the distance measuring assemblies are arranged on different sides of the connecting rod, and when the clamping fixing assemblies move along the arch rib, the distance measuring assemblies detect the distance between the clamping devices where the distance measuring assemblies are located and the cross braces or the hanging rods.

On the basis of the technical scheme, the polishing and coating device further comprises a remote control assembly, the remote control assembly comprises a transmitter and a receiver, the transmitter is used for transmitting a command signal to the receiver, and the receiver is arranged on the clamping fixing assembly and is in signal connection with the driving assembly, the walking assembly, the rust removal polishing assembly and the corrosion prevention coating assembly.

On the basis of the technical scheme, the walking assembly comprises a plurality of groups of walking wheels and driving motors, wherein the number of the walking wheels is the same as that of the holders, each group of walking wheels is arranged on one of the holders, and the driving motors are used for driving the walking wheels to walk along the arch ribs.

On the basis of the technical scheme, the walking assembly comprises a speed sensor.

On the basis of the technical scheme, the rust removal polishing assembly further comprises a waste residue recovery system arranged in the clamp holder, the waste residue recovery system and the crawler-type polishing device are sequentially arranged along the movement direction of the clamping fixing assembly, and the waste residue recovery system is used for recovering waste residues generated by polishing of the crawler-type polishing device.

On the basis of the technical scheme, waste residue recovery system includes air intake, dust filter bag, motor and air outlet, the air intake is located the holder is close to one side of accommodation space, the air outlet is located on the holder, be equipped with the ventilation passageway between air intake and air outlet, dust filter bag and motor are located in the ventilation passageway, dust filter bag import with the air intake matches, and is arranged in filtering the waste residue in the air that passes through.

On the basis of the technical scheme, the anticorrosive coating assembly comprises a spray gun and a paint box communicated with the spray gun, and the paint box is arranged in the clamp holder.

On the basis of the technical scheme, the driving assembly comprises a rotating arm and a hydraulic cylinder, one end of the rotating arm is fixed with one of the holders, the other end of the rotating arm is fixed with the other holder in a rotating mode, and two ends of the hydraulic cylinder are respectively fixed on the two holders in a rotating mode.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses a painting device of polishing for steel pipe concrete arch bridge arch rib, the fixed subassembly of centre gripping, drive assembly and the walking subassembly of setting can guarantee the painting device of polishing and walk along the arch rib, through the rust cleaning of setting subassembly and anticorrosive application subassembly of polishing, can accomplish the rust cleaning and the application operation to the arch rib, and then when having avoided adopting artificial mode to rust cleaning and application, have great potential safety hazard.

Drawings

Fig. 1 is a usage state diagram of a polishing and coating device in the embodiment of the present invention;

fig. 2 is a vertical view of the polishing and painting device in the embodiment of the present invention;

FIG. 3 is a sectional view of a rust removing polishing assembly of the polishing and coating device in the embodiment of the present invention;

fig. 4 is a cross-sectional view of an anticorrosive coating assembly of the polishing and coating device in the embodiment of the present invention;

FIG. 5 is a sectional view taken along the line A-A' in the embodiment of the present invention;

fig. 6 is a sectional view along direction B-B' in the embodiment of the present invention.

In the figure: 1-clamping fixed component, 11-clamp, 12-connecting rod, 2-driving component, 21-rotating arm, 22-hydraulic cylinder, 3-walking component, 31-walking wheel, 4-derusting and polishing component, 41-crawler-type polishing device, 42-waste residue recovery system, 43-air inlet, 44-dust filter bag, 45-motor, 46-air outlet, 5-anticorrosion coating component, 51-spray gun, 52-paint box, 6-distance measuring component, 7-remote control component, 71-receiver, 8-arch rib, 81-cross brace and 82-suspension rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Referring to fig. 1 to 4, an embodiment of the present invention provides a polishing and coating device for an arch rib of a concrete filled steel tube arch bridge, a cross brace 81 and a suspension rod 82 are arranged on an arch rib 8, the polishing and coating device includes a clamping and fixing component 1, a driving component 2, a walking component 3, two rust removing and polishing components 4 and two corrosion preventing and coating components 5, the clamping and fixing component 1 includes at least two pairs of clamps 11 and at least one connecting rod 12 which are arranged at intervals, an accommodating space matched with the arch rib 8 is arranged between each pair of clamps 11, the connecting rod 12 connects adjacent clamps 11 on the same side, the driving component 2 connects two clamps 11 in the same pair, the driving component 2 is used for driving the clamp 11 of one unconnected connecting rod 12 to rotate around the other clamp 11, that is, each pair of clamps 11 has two states of open and closed, wherein the initial clamping state of the clamp 11 is a closed state, when the driving component 2 acts to change the clamp holder 11 from a closed state to an open state, one clamp holder 11 of the pair of clamp holders 11 rotates around the other clamp holder 11, the rotating clamp holder 11 and the arch rib 8 are provided with the same side of a cross brace 81, the rotated clamp holder 11 cannot be contacted with the cross brace 81 or a suspender 82 in the walking process of the polishing and coating device, the walking component 3 is arranged on the clamping and fixing component 1 and is used for driving the clamping and fixing component 1 to move along the arch rib 8, the two rust removing and polishing components 4 are respectively arranged on the two clamp holders 11 on different sides, the rust removing and polishing component 4 comprises a plurality of crawler-type polishing devices 41 which are parallel and are arranged along the moving direction of the clamping and fixing component 1, the crawler-type polishing devices 41 are used for polishing the arch rib 8, the two corrosion preventing and coating components 5 are respectively arranged on the two clamp holders 11 on different sides and are used for coating the arch rib 8, and the corrosion preventing and polishing components 5 and 4 on the same side are arranged And (5) setting.

Wherein, in order to increase the stability of the polishing and coating device and ensure that at least two fixed points are arranged between the polishing and coating device and the arch rib 8 in the walking process, it is contemplated that more than three pairs of grippers 11 may be employed, with the provision of the gripping and securing assembly 1 and the drive assembly 2, because the clamping and fixing component 1 is provided with a containing space matched with the arch rib 8, the clamping and fixing component 1 is adjusted by the driving component 2, the polishing and coating device can be fixed on the arch rib 8, the walking component 3 arranged on the clamping and fixing component 1 can drive the polishing and coating device to walk along the arch rib 8, through the arranged rust removal polishing component and the anticorrosive coating component, the operation of removing rust and coating the whole arch rib 8 can be completed on the basis that the polishing coating device travels along the arch rib 8, and further avoids the great potential safety hazard when rust removal and coating are carried out in a manual mode.

Referring to fig. 2, the painting finishing apparatus further includes a plurality of distance measuring assemblies 6, the distance measuring assembly 6 is disposed on one of the holders 11 of each pair, and the distance measuring assembly 6 is disposed on a different side of the connecting rod 12, the distance measuring assembly 6 detects a distance between the holder 11 and the cross brace 81 or the boom 82 when the holding fixture 1 moves along the rib 8, preferably, the distance measuring assembly 6 is a distance sensor, and can detect whether the distance is close to the cross brace 81 or the boom 82 when the painting finishing apparatus moves along the rib 8, when the distance measuring assembly 6 detects that the distance between the cross brace 81 or the boom 82 and the holder 11 is less than a predetermined value (less than the predetermined value, the cross brace 81 or the boom 82 is located between the front and rear holders 11), the driving assembly 2 corresponding to the holder 11 on which the distance measuring assembly 6 is located drives the holder 11 to rotate, after the holder 11 passes through the cross brace 81 or the boom 82, the driving assembly 2 will drive the holder 11 to abut against the arch rib 8, wherein the basis of the determination that the holder 11 passes through the wale 81 or the suspension bar 82 is that the distance measuring assembly 6 on the holder 11 on the same side as the holder 11 and on the rear side detects that the distance between the wale 81 or the suspension bar 82 and the distance is smaller than the predetermined value, at this time, the front holder 11 having passed through the wale 81 or the suspension bar 82 abuts against the arch rib 8 due to the action of the corresponding driving assembly 2, the rear holder 11 at the wale 81 or the suspension bar 82 is reached, after the front holder 11 abuts against the arch rib 8, the front holder 11 is rotated by the action of the corresponding driving assembly 2 of the rear holder 11, when the distance measuring assembly 6 having passed through the wale 81 or the suspension bar 82 and abutting against the front holder 11 on the arch rib 8 detects that the distance between the wale 81 or the suspension bar 82 and the holder 11 on the arch rib is increased by the length of the holder 11 plus the length influenced by, by judging whether the state duration time of the clamp 11 after rotation is the same as the state duration time of the clamp 11 passing through the cross brace 81 or the suspension rod 82 before, if so, the back clamp 11 passes through the cross brace 81 or the suspension rod 82, mainly because the walking speed of the polishing and coating device is constant, and the time of the front clamp 11 and the back clamp 11 passing through the cross brace 81 or the suspension rod 82 is the same), the driving component 2 corresponding to the back clamp 11 rotates the clamp 11 to abut against the arch rib 8, so that the polishing and coating device can pass through the cross brace 81 or the suspension rod 82 smoothly.

The painting device of polishing still includes remote control subassembly 7, remote control subassembly 7 includes transmitter and receiver 71, the transmitter is used for transmitting command signal to receiver 71, receiver 71 is located on the fixed subassembly 1 of centre gripping, and with drive assembly 2, walking subassembly 3, rust cleaning polishing subassembly 4 and anticorrosive painting subassembly 5 signal connection, can accomplish the control to this painting device of polishing through the handheld transmitter of constructor, wherein, signal received through receiver 71, accomplish drive assembly 2 to required control, walking subassembly 3, rust cleaning polishing subassembly 4 or anticorrosive painting subassembly 5's on-off control, in order to improve this painting device's walking of polishing, the accuracy of rust cleaning and painting operation.

Referring to fig. 2, 5 and 6, the traveling assembly 3 includes a plurality of sets of traveling wheels 31 and driving motors, the number of which is the same as that of the holders 11, each set of traveling wheels 31 is arranged on one holder 11, and the driving motors are used for driving the traveling wheels 31 to travel along the arch ribs 8, because the holders 11 on both sides are abutted against the arch ribs 8 when the polishing and coating device needs to travel, at this time, the traveling wheels 31 are driven to rotate by the driving motors, so that the polishing and coating device can move along the arch ribs 8, and necessary conditions are provided for subsequent rust removal and spraying operations; preferably, the walking assembly 3 further comprises a speed sensor, which can monitor the walking speed, so as to avoid the situation that the walking speed of the polishing and coating device is too high, and the polishing is not thorough or the spraying is not uniform.

Referring to fig. 3, 5 and 6, the rust removal polishing assembly 4 further comprises a waste residue recovery system 42 arranged in the holder 11, the waste residue recovery system 42 and the crawler-type polishing device 41 are sequentially arranged along the moving direction of the fixed assembly 1, the waste residue recovery system 42 is used for recovering waste residues generated by polishing the crawler-type polishing device 41, and after the crawler-type polishing device 41 polishes the arch rib 8, the waste residues generated by the crawler-type polishing device can be recovered by the waste residue recovery system 42, so that the spraying quality can not be reduced or the spraying is not uniform due to the existence of the waste residues when the subsequent anticorrosive coating assembly 5 is sprayed.

Referring to fig. 3, further, the waste residue recycling system 42 includes an air inlet 43, a dust filter bag 44, a motor 45 and an air outlet 46, the air inlet 43 is disposed on one side of the holder 11 close to the accommodating space, the air outlet 46 is disposed on the holder 11, a ventilation channel is disposed between the air inlet 43 and the air outlet 46, the dust filter bag 44 and the motor 45 are disposed in the ventilation channel, an inlet of the dust filter bag 44 is matched with the air inlet 43 and is used for filtering waste residues in the passing air, through the action of the motor 45, waste residues generated by polishing of the crawler-type polishing device 41 can be sucked, so that the waste residues enter the dust filter bag 44 through the air inlet 43, and pollution caused by directly discharging the waste residues into the air is also avoided, wherein the dust filter bag 44 can be replaced when more waste residues are collected, further, a filter sheet is disposed on the dust filter bag 44, and through the action of the filter sheet, it can be further ensured that the air passing through the dust filter bag 44, thereby reducing the pollution to the surrounding environment.

Referring to fig. 4, the anticorrosive coating assembly 5 includes a spray gun 51 and a paint box 52 communicated with the spray gun 51, the paint box 52 is arranged in the holder 11, and the spraying operation of the ground arch rib 8 can be completed through the arrangement of the spray gun 51.

Referring to fig. 2 to 4, the driving assembly 2 includes a rotating arm 21 and a hydraulic cylinder 22, one end of the rotating arm 21 is fixed to one of the holders 11, the other end of the rotating arm 21 is fixed to the other holder 11, two ends of the hydraulic cylinder 22 are respectively fixed to the two holders 11 in a rotating manner, and by the telescopic action of the hydraulic cylinder 22, one of the holders 11 can rotate around the rotating connection of the rotating arm 21, so as to ensure that the holder 11 can smoothly pass through the cross brace 81 or the boom 82; furthermore, the hydraulic cylinder 4 is provided with a sensor which can monitor the clamping force, so that the force of the two measuring clampers 11 acting on the arch rib 8 is monitored, the situation that the arch rib 8 is damaged due to the fact that the force of the two measuring clampers 11 acting on the arch rib 8 is not too large is ensured, and the situation that the polishing and coating device falls off due to the fact that the force of the two measuring clampers 11 acting on the arch rib 8 is not too small is also ensured; the link 12 and the rotating arm 21 have a function of assisting the passage of a power line and a weak line in addition to the connection function.

Taking three pairs of grippers 11 as an example for detailed description, the same pair of grippers 11 is provided with a driving assembly 2; the driving component 2 can drive the holder 11 on one side to rotate upwards; the walking assembly 3 comprises six groups of walking wheels 31, and the walking wheels 31 are arranged on the six clampers 11; the derusting and polishing assembly 4 is arranged in the middle of a first pair of two holders 11 arranged along the traveling direction, the crawler-type polishing device 41 consists of a plurality of crawler-type polishers with the same width, an arc is divided into a plurality of short straight line segments to polish the arch ribs 8, the waste residue is recovered by the waste residue recovery system 42, the air inlet 43 of the waste residue recovery system 42 is arranged behind the crawler-type polishing device 41, the motor 45 rotates at high speed to enable the interior of the waste residue recovery system 42 to form vacuum, and gas continuously flows in from the air inlet 43 to drive the waste residue after derusting and polishing of the crawler-type polishing device 41 to enter the dust filter bag 44; the anticorrosive coating component 5 is arranged at the rear half part of the first pair of two grippers 11 arranged along the travelling direction (namely, the anticorrosive coating component 5 and the crawler-type grinding device 41 are sequentially arranged along the travelling direction of the grinding coating device); the distance measuring components 6 are arranged on the three pairs of holders 11, wherein the distance measuring components 6 are arranged on the first pair of holders 11 and the third pair of holders 11 arranged along the walking direction, and the distance measuring components 6 are respectively arranged at the front and the back of the second pair of holders 11; the polishing and coating device also comprises a power assembly, the power assembly comprises at least one group of power systems, and the power systems are arranged on the clamp holder 11 and provide power for all components needing power; the remote control assembly is used for receiving a signal command of the electric transmitter to control the rotation of the rotating arm 21, the walking of the walking wheels 31, the operation of the crawler-type grinding device 41, the operation of the waste residue recovery system 42 and the spraying construction of the spray gun 51.

Further, when the sanding coating device is used, the external dimension of the sanding coating device needs to be determined. The cross-sectional shape and the cross-sectional dimension of the steel pipe concrete arch rib 8 are measured, for example, the arc diameter, the straight line segment length and the like of the arch rib 8 are measured, and the dimensions of components such as the clamp holder 11 and the like are adjusted according to the measurement result, so that the polishing and coating device can be tightly attached to the arch rib 8. The size of the cross brace 81, the diameter of the suspender 82 and the longitudinal influence range of the cross brace 81 and the suspender 82 are measured, the minimum length of the longitudinal connection of the connecting rods 12 (namely, the minimum distance between two adjacent pairs of the clampers 11) is determined according to the measurement result, and the grinding and coating device can be ensured to smoothly pass through the cross brace 81 and the suspender 82 by determining the minimum length of the connecting rods 12.

Wherein, crawler-type grinding device 41 will be suitable apart from the distance of rib 8, because the distance is too far away to polish thoroughly, the distance is too close probably to damage rib 8, therefore, need adjust crawler-type grinding device 41's position and length according to measuring result, ensure to polish respond well, simultaneously, also can control crawler-type grinding device 41 apart from rib 8's distance through drive assembly 2, in order to ensure crawler-type grinding device 41's the effect of polishing, and arrange spray gun 51's position rationally, adjust spray gun 51's spraying rate according to the coating thickness that requires, it is even to guarantee the spraying, thickness is unanimous and meet the requirements.

Further, various parameters are determined. If the friction coefficient between the clamp holder 11 and the steel pipe arch rib 8 is tested, the proper clamping force is determined according to the self weight of the whole polishing and coating device (namely, the adjusting driving component 2 applies proper acting force), the polishing and coating device with too large clamping force cannot walk on the arch rib 8, and the polishing and coating device with too small clamping force cannot clamp the arch rib 8; and (3) testing the friction coefficient between the travelling wheel 31 and the steel pipe arch rib 8 so as to determine the required driving force when the travelling wheel 31 travels.

Before the polishing and coating device is used for derusting and spraying operation, the structure of the polishing and coating device needs to be checked; checking the connection between each component of the polishing and coating device; checking whether the line connection (connection between the power system and the receiver 71 and all other components) is intact; by issuing different commands from the transmitter, the operating conditions of the respective components are checked to confirm whether the transmitter and the receiver 71 are operating normally.

After the inspection work confirms that the work is correct, the polishing and coating device is installed at the arch springing position of the arch rib 8, wherein the rust removal polishing component 4 and the corrosion prevention coating component 5 are positioned on a first pair of two clampers 11 arranged along the walking direction; and adjusting the installation position and angle of the polishing and coating device to enable the axis of the polishing and coating device to be consistent with the axis of the arch rib 8. The control drive assembly 2 drives the gripper 11 to grip the rib 8 and to closely fit the rib 8.

Before using the application device of polishing to remove rust and the spraying operation, still need debug the walking speed of polishing application device, start crawler-type grinding device 41, polish steel pipe arch rib 8, start walking wheel 31 simultaneously, walking speed keeps at the uniform velocity, looks over the arch rib 8 condition of polishing, tests out the effectual maximum walking speed of polishing.

When the grinding and coating device is used for carrying out rust removal and spraying operation, the crawler-type grinding device 41 is started, the steel pipe arch rib 8 is ground, the walking wheels 31 are started simultaneously, the walking wheels walk at the tested walking speed, the spray gun 51 is opened simultaneously for paint spraying, and the spraying speed is determined according to the coating thickness required by design.

The concrete steps of walking on the arch rib 8 and carrying out rust removal and polishing by the polishing and coating device are as follows: the distance measuring assembly 6 arranged at the front part of the clamp holder 11 detects the distance between the clamp holder 11 and the cross brace 81 or the suspension rod 82, when the clamp holder 11 runs to the cross brace 81 or the suspension rod 82, the hydraulic cylinder 22 in the driving assembly 2 is contracted to drive one of the clamp holders 11 to rotate upwards until reaching a horizontal state, so as to avoid the position conflict with the cross brace 81 or the suspension rod 82, and the travelling wheel 31 continues to travel forwards, so that the first pair of clamp holders 11 (the pair of clamp holders 11 which reach the cross brace 81 or the suspension rod 82 firstly) passes through the cross brace or the suspension rod; among the conditions for judging that the first pair of grippers 11 have passed the wale 81 or the boom 82 are: when the distance detected by the distance measuring assembly 6 on the second pair of holders 11 decreases by one holder 11 length plus the effect length of the wale 81 or boom 82, it indicates that the first pair of holders 11 completely pass the wale 81 or boom 82; the hydraulic cylinders 22 in the drive assembly 2 are released and the rib 8 is re-clamped by the clamps 11 of the wales 81 or the booms 82. The clamper 11 keeps the uniform motion state in the whole process.

The walking wheels 31 continue to walk forwards along the arch rib 8, when the second pair of clamps 11 approach the cross brace 81 or the suspension rod 82, the distance between the clamps 11 and the cross brace 81 or the suspension rod 82 is detected through the distance measuring assembly 6 mounted on the clamps 11, when the second pair of clamps 11 run to the cross brace 81 or the suspension rod 82, the corresponding hydraulic cylinders 22 in the driving assemblies 2 contract to drive the clamps 11 to rotate upwards until reaching the horizontal state, so as to avoid the position conflict with the cross brace 81 or the suspension rod 82, the walking wheels 31 continue to walk forwards, and the second pair of clamps 11 pass through the cross brace 81 or the suspension rod 82. Wherein the condition for judging that the second pair of grippers 11 has passed the wale 81 or the boom 82 is: when the distance detected by the distance measuring assembly 6 on the third pair of holders 11 decreases by one holder 11 length plus the effect length of the cross brace 81 or boom 82, it indicates that the second pair of holders 11 completely pass the cross brace 81 or boom 82; the hydraulic cylinders 22 in the actuating assemblies 2 corresponding to the second pair of clamps 11 are released and the rib 8 is re-clamped by the clamps 11 of the wales 81 or the booms 82. The clamper 11 keeps the uniform motion state in the whole process.

The travelling wheels 31 continue to travel forwards along the arch ribs 8, when the third pair of holders 11 (namely the pair of holders 11 provided with the rust removal grinding assembly 4 and the anticorrosive coating assembly 5) approach the cross brace 81 or the suspension rod 82, the distance between the holders 11 and the cross brace 81 or the suspension rod 82 is detected through the distance measuring assembly 6 mounted on the holders 11, when the third pair of holders 11 travel to the cross brace 81 or the suspension rod 82, the corresponding hydraulic cylinders 22 in the driving assemblies 2 contract to drive the holders 11 to rotate upwards until reaching a horizontal state, so that the holders 11 are prevented from colliding with the cross brace 81 or the suspension rod 82, at the moment, the rust removal grinding assembly 4 and the anticorrosive coating assembly 5 stop grinding and spraying, and the travelling wheels 31 continue to travel forwards until the third pair of holders 11 are reopened through the cross brace 81 or the suspension rod 82. Among the conditions for determining that the third pair of grippers 11 have passed the wale 81 or the boom 82 are: when the distance measuring assembly 6 on the second pair of holders 11 detects that the distance of the cross brace 81 or the boom 82 is increased by the length of the holder 11 plus the influence length of the cross brace 81 or the boom 82, it indicates that the third pair of holders 11 completely pass through the cross brace 81 or the boom 82 (wherein, when one of the holders 11 is in the open state, i.e., the holder 11 passes through the cross brace 81 or the boom 82, the adjacent holder 11 in the traveling direction is in the closed state, i.e., the adjacent holder 11 in the traveling direction abuts against the rib 8), the hydraulic cylinder 22 in the driving assembly 2 corresponding to the third pair of holders 11 is released, and the rib 8 is re-clamped by the third pair of holders 11 of the cross brace 81 or the boom 82. And the rust removal polishing assembly 4 and the anticorrosive coating assembly 5 are restarted to continue polishing and spraying construction, and the walking wheels 31 walk forwards.

The action principle of the polishing and coating device for the arch rib of the concrete filled steel tube arch bridge is as follows:

and (3) installing the polishing and coating device at the arch springing position of the arch rib 8, and adjusting the installation position and angle of the polishing and coating device to enable the axis of the polishing and coating device to be consistent with the axis of the arch rib. And controlling the hydraulic cylinders 22 in the driving assemblies 2 corresponding to the three pairs of the grippers 11 to loosen, driving the grippers 11 to rotate downwards, clamping the arch rib 8 and tightly fitting the arch rib 8. The travelling wheels 31 are started and the polishing and coating device advances along the arch rib 8.

When the distance measuring assembly 6 mounted on the holder 11 detects the distance between the holder 11 and the wale 81 or the boom 82, when the first pair of holders 11 is driven to the wale 81 or the boom 82, the hydraulic cylinder 22 is contracted to drive one holder 11 of the first pair to rotate upward until reaching the horizontal state, so that the first pair of holders 11 avoids colliding with the position of the wale 81 or the boom 82, the traveling wheels 31 continue to travel forward, and the first pair of holders 11 pass through the wale 81 or the boom 82. When the distance measuring value of the distance measuring assembly 6 on the second pair of holders 11 is reduced by one holder 11 length plus the influence length of the wale 81 or the boom 82, the first pair of holders 11 passes completely through the wale 81 or the boom 82, the hydraulic cylinder 22 is released, and the arch rib 8 is re-clamped by the holders 11 of the wale 81 or the boom 82.

The second and third pairs of holders 11 are passed through the wales 81 or the suspension bars 82 in turn in the same manner. When the third pair of holders 11 pass through the cross braces 81 or the suspension rods 82, the crawler-type grinding devices 41 and the spray guns 51 are closed according to actual conditions, and the arch rib 8 is opened again after the crawler-type grinding devices pass through the cross braces 81 or the suspension rods, so that the rust removal and the coating of the arch rib 8 are completed.

Referring to fig. 1 to 4, the present embodiment further provides a polish coating method using the polish coating apparatus, including the following steps:

clamping each pair of clamps 11 on the arch rib 8;

the control walking component 3 drives the clamp holder 11 to move along the arch rib 8, controls the rust removal polishing component 4 to polish the arch rib 8 on the running track, and controls the anticorrosion coating component 5 to coat the polished arch rib 8 on the running track;

when the clamper 11 approaches the cross-brace 81 or the suspension bar 82, the control drive assembly 2 drives one of the clampers 11 to rotate in a direction away from the other clamper 11, and when the rotating clamper 11 passes through the cross-brace 81 or the suspension bar 82, the control drive assembly 2 drives one of the clampers 11 to rotate in a direction approaching the other clamper 11 and finally abuts against the rib 8.

When the polishing and coating device is used for derusting and spraying operation, the structural overall dimension is determined firstly; the cross-sectional shape and the cross-sectional dimension of the steel pipe concrete arch rib 8 are measured, and the dimensions of components such as the clamp holder 11 are adjusted according to the measurement result, so that the polishing and coating device can be tightly attached to the arch rib 8. The size of the cross brace 81, the diameter of the suspender 82 and the longitudinal influence range thereof are measured, and the minimum longitudinal connection length of the connecting rod 12 is determined according to the measurement result, so that the polishing and coating device can smoothly pass through the cross brace 81 and the suspender 82. The position and the length of the crawler-type grinding device 41 are adjusted according to the measurement result, the grinding effect is good, the position of the spraying system is reasonably arranged, the spraying speed of the spraying system is adjusted according to the required coating thickness, the spraying uniformity is ensured, the thickness is consistent, and the requirement is met.

Secondly, determining various parameters; and (3) testing the friction coefficient between the clamp holder 11 and the steel pipe arch rib 8, determining the proper clamping force according to the self weight of the whole polishing and coating device, testing the friction coefficient between the travelling wheel 31 and the steel pipe arch rib 8, and determining the travelling driving force.

Inspecting the structure of the polishing and coating device; checking the connection between each component of the polishing and coating device; checking whether the line connection is intact; confirming whether the transmitter and receiver 71 are operating properly.

After the inspection work confirms that no errors exist, the polishing and coating device is installed at the arch springing position of the arch rib 8, wherein the rust removal polishing assembly 4 and the anticorrosive coating assembly 5 are positioned on a first pair of two clampers 11 arranged along the walking direction; and adjusting the installation position and angle of the polishing and coating device to enable the axis of the polishing and coating device to be consistent with the axis of the arch rib 8. The hydraulic cylinder 22 is controlled to be released, and the clamp holder 11 is driven to clamp the arch rib 8 and tightly fit with the arch rib 8.

Debugging the walking speed; the rust removal polishing assembly 4 is started, the steel pipe arch rib 8 is polished, the walking wheels 31 are started simultaneously, the walking speed is kept at a constant speed, the polishing condition of the arch rib 8 is checked, and the maximum walking speed with a good polishing effect is guaranteed in testing.

And starting the rust removal polishing assembly 4, polishing the steel pipe arch rib 8, simultaneously starting the traveling wheels 31, traveling according to the traveling speed after the test is finished, simultaneously opening the anticorrosive coating assembly 5 for paint spraying, and determining the spraying speed according to the coating thickness required by the design.

Detecting the distance between the holder 11 and the cross brace 81 or the boom 82 through the distance measuring assembly 6 mounted on the holder 11, when the holder 11 runs to the cross brace 81 or the boom 82, the hydraulic cylinder 22 is contracted to drive one holder 11 of the pair of holders 11 to rotate upwards until reaching the horizontal state, so as to avoid the collision between the holder 11 and the position of the cross brace 81 or the boom 82, and the travelling wheels 31 continue to travel forwards, so that the holder 11 rotating to the horizontal state passes through the cross brace 81 or the boom 82; the judgment conditions of the clamp 11 through the wale 81 or the suspension rod 82 are as follows: when the distance measuring value of the distance measuring assembly 6 on the clamp 11 of the adjacent pair which does not pass through the cross brace 81 or the suspension rod 82 is reduced by the length of the clamp 1 plus the influence length of the cross brace 81 or the suspension rod 82, the clamp 11 which is opened to the horizontal state completely passes through the cross brace 81 or the suspension rod 82, the hydraulic cylinder 22 is loosened, and the clamp 11 clamps the arch rib 8 again.

In the same manner, several other pairs of holders 11 are passed in turn over the crossbars 81 or the booms 82, respectively. When the clamping devices 11 of the Buddha derusting polishing assembly 4 and the anticorrosive coating assembly 5 pass through the cross brace 81 or the hanger rod 82, the derusting polishing assembly 4 and the anticorrosive coating assembly 5 need to be closed according to actual conditions, and the clamping devices 11 are opened again after passing, so that the derusting and coating of the arch rib are completed.

The present invention is not limited to the above embodiments, and for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered to be within the protection scope of the present invention. Those not described in detail in this specification are within the skill of the art.

Claims (9)

1. The utility model provides a polish application device for steel pipe concrete arch bridge arch rib, be equipped with stull (81) and jib (82) on arch rib (8), its characterized in that, polish application device includes:

the clamping and fixing assembly (1) comprises at least two pairs of clamping devices (11) arranged at intervals and at least one connecting rod (12), an accommodating space matched with the arch rib (8) is formed between each pair of the clamping devices (11), and the connecting rod (12) is connected with the adjacent clamping devices (11) on the same side;

a driving assembly (2) connecting two grippers (11) in the same pair, wherein the driving assembly (2) is used for driving one gripper (11) which is not connected with the connecting rod (12) to rotate around the other gripper (11);

the walking assembly (3) is arranged on the clamping and fixing assembly (1) and is used for driving the clamping and fixing assembly (1) to move along the arch rib (8);

the two rust removing and polishing assemblies (4) are respectively arranged on the two clampers (11) on different sides, each rust removing and polishing assembly (4) comprises a plurality of crawler type polishing devices (41) which are parallel to each other and arranged along the movement direction of the clamping and fixing assembly (1), and each crawler type polishing device (41) is used for polishing the arch rib (8);

two anticorrosive application subassemblies (5), two anticorrosive application subassembly (5) are located two of different sides respectively on holder (11) to accomplish the application to arch rib (8), and be located the homonymy anticorrosive application subassembly (5) and rust cleaning subassembly (4) of polishing are followed the fixed subassembly of centre gripping (1) direction of motion sets gradually.

2. A sanding device for a concrete filled steel tube arch bridge rib as defined in claim 1, wherein: the polishing and coating device further comprises a plurality of distance measuring assemblies (6), the distance measuring assemblies (6) are arranged on each pair of the clamp holders (11), the distance measuring assemblies (6) and the connecting rods (12) are arranged on different sides, and when the clamping fixing assemblies (1) move along the arch ribs (8), the distance measuring assemblies (6) detect the distance between the clamp holders (11) where the distance measuring assemblies are located and the cross braces (81) or the hanging rods (82).

3. A sanding device for a concrete filled steel tube arch bridge rib as defined in claim 1, wherein: the coating device of polishing still includes remote control subassembly (7), remote control subassembly (7) include transmitter and receiver (71), the transmitter is used for transmitting command signal extremely receiver (71), receiver (71) are located on the fixed subassembly of centre gripping (1), and with driving assembly (2), walking subassembly (3), rust cleaning polishing subassembly (4) and anticorrosive coating subassembly (5) signal connection.

4. A sanding device for a concrete filled steel tube arch bridge rib as defined in claim 1, wherein: walking subassembly (3) include with the same multiunit walking wheel of holder (11) quantity (31) and driving motor, every group walking wheel (31) are located one on holder (11), just driving motor is used for the drive walking wheel (31) are followed arch rib (8) and are walked.

5. A sanding device for a concrete filled steel tube arch bridge rib as defined in claim 1, wherein: the walking assembly (3) comprises a speed sensor.

6. A sanding device for a concrete filled steel tube arch bridge rib as defined in claim 1, wherein: rust cleaning polishing assembly (4) are still including locating waste residue recovery system (42) in holder (11), waste residue recovery system (42) and crawler-type grinding device (41) are followed fixed subassembly (1) direction of motion of centre gripping sets gradually, waste residue recovery system (42) are used for right the waste residue that crawler-type grinding device (41) polished the production is retrieved.

7. A sanding device for a concrete filled steel tube arch bridge rib as defined in claim 6, wherein: waste residue recovery system (42) includes air intake (43), dust filter bag (44), motor (45) and air outlet (46), air intake (43) are located holder (11) are close to one side of accommodation space, air outlet (46) are located on holder (11), be equipped with the ventilation passageway between air intake (43) and air outlet (46), dust filter bag (44) and motor (45) are located in the ventilation passageway, dust filter bag (44) import with air intake (43) match, and are arranged in filtering the waste residue in the air that passes through.

8. A sanding device for a concrete filled steel tube arch bridge rib as defined in claim 1, wherein: anticorrosive application subassembly (5) including spray gun (51) and with paint workbin (52) of spray gun (51) intercommunication, paint workbin (52) are located in holder (11).

9. A sanding device for a concrete filled steel tube arch bridge rib as defined in claim 1, wherein: the driving assembly (2) comprises a rotating arm (21) and a hydraulic cylinder (22), one end of the rotating arm (21) is fixed to one of the holders (11), the other end of the rotating arm is fixed to the other holder (11) in a rotating mode, and two ends of the hydraulic cylinder (22) are fixed to the two holders (11) in a rotating mode respectively.

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