Contact line polishing device with dust suction

Abstract

The application relates to a contact line polishing device with a dust suction device, and belongs to the technical field of urban rail transit polishing instruments and tools, which comprises a rack, at least one polishing machine is connected to each end of the rack, an angle adjusting mechanism is connected to the polishing machine, the polishing machine and the angle adjusting mechanism are in one-to-one correspondence and are connected, a running mechanism is arranged on the rack, and the rack slides on a busbar through the running mechanism; dust removal covers are arranged at the two ends of the rack, gas outlets of the two dust removal covers are jointly connected with a dust suction assembly, the dust suction assembly is fixed on the rack, one end of the dust removal cover away from the dust suction assembly is slidably arranged on the busbar, the dust removal cover covers a polishing disc and a boss of the polishing machine, and an air inlet pipe is arranged on the dust removal cover; the dust removal cover is sleeved on the boss of the polishing machine, and when the polishing machine moves under the driving of an electric traction device, the dust removal cover moves together. The application has the effects of realizing fine polishing of the contact line and efficiently treating dust generated in the polishing.

Description

Technical Field

[0001] This application relates to the field of polishing equipment and tools for urban rail transit, and in particular to a contact wire polishing device with a dust collection device. Background Technology

[0002] In urban rail transit and related electrified transportation sectors, rigid overhead contact lines, as an important power supply method, are widely used in enclosed or semi-enclosed transportation lines such as subways and light rails due to their compact structure, small footprint, and high operational stability. They mainly consist of busbars, contact wires, and supporting structures. Through direct contact between the contact wire and the pantograph, they provide continuous power to the train, making them one of the key systems ensuring the safe and efficient operation of trains.

[0003] In a rigid overhead contact system, the contact wire is the core component that directly rubs against the pantograph's sliding contact plate. Its performance and condition directly affect the reliability of power supply and the safety of train operation. Because the pantograph is in continuous contact with the contact wire during high-speed operation, frequent friction and wear occur. After long-term operation, the surface of the contact wire gradually develops wear and oxide buildup. These problems not only increase contact resistance, leading to decreased power transmission efficiency, but may also cause sparks, arcing, and other phenomena, exacerbating contact wire damage and even posing a safety hazard of wire breakage.

[0004] Therefore, in order to maintain the good working condition of the contact wire and ensure the stable operation of the rigid contact network, regular grinding of the contact wire is an essential maintenance operation. To achieve efficient and precise grinding of the contact wire, contact wire grinding machines have emerged. These machines are usually installed on work vehicles or special platforms, and drive a grinding wheel or grinding head to contact the contact wire to remove wear layers, oxide layers, and other defects on the surface of the contact wire, restoring its smooth surface. However, during the grinding process, due to the high-speed friction between the metal and the grinding wheel, a large amount of metal dust and debris are generated.

[0005] Currently, existing contact line grinding machines still have significant shortcomings in dust control, requiring the connection of an external dust collection device to remove the dust generated during grinding. However, such external dust collection devices are difficult to achieve comprehensive and efficient dust collection of the grinding area. In particular, the problem of flying dust in the grinding work area is extremely serious. A large amount of metal dust cannot be sucked away in time and will spread into the surrounding space. Some of the dust will directly fall on the surface of the track, track bed, tunnel walls and other equipment, which not only affects the cleanliness of the working environment, but may also affect track facilities and train components, increase subsequent maintenance costs, and also pose potential health hazards to the workers. Summary of the Invention

[0006] In order to achieve fine grinding of contact wires and efficient treatment of the dust generated during grinding, this application provides a contact wire grinding device with a dust collection device.

[0007] The contact wire polishing device with a dust collection unit provided in this application adopts the following technical solution:

[0008] The device includes a frame, with at least one grinding machine connected to each end of the frame. Each grinding machine is equipped with an angle adjustment mechanism, which is used to adjust the deflection angle of the grinding machine so that the grinding disc of the grinding machine can fit into the part of the contact line that needs to be ground. The grinding machines and the angle adjustment mechanisms are connected in a one-to-one correspondence. The frame is provided with a traveling mechanism, which allows the frame to slide on the busbar.

[0009] Dust hoods are provided at both ends of the frame. The air outlets of the two dust hoods are connected to a dust collection assembly. The dust collection assembly is fixed on the frame. The end of the dust hood away from the dust collection assembly can be slidably mounted on the manifold. The dust hood covers the grinding disc and boss of the grinder. An air inlet pipe is provided on the dust hood.

[0010] The dust cover is fitted onto the protrusion of the grinding machine. When the grinding machine moves along with the frame under the drive of the electric traction device, it will move the dust cover together.

[0011] By adopting the above technical solution, the deflection angle of the grinder can be precisely adjusted through the angle adjustment mechanism, ensuring precise contact between the grinding disc and the part to be ground on the contact line. This guarantees the accuracy of the grinding operation and significantly improves the grinding quality. The traveling mechanism, in conjunction with the traction of the electric traction equipment, can drive the frame to move stably on the manifold, realizing automated movement of the grinding process and improving work efficiency. The dust hood installed on the grinder effectively covers the working area of ​​the grinder, preventing dust generated during grinding from scattering at the source. Combined with the suction effect of the dust collection component, the dust in the grinding area can be quickly removed, and the powder generated during grinding can be collected to prevent it from scattering and affecting the environment.

[0012] Optionally, the dust cover has a mounting hole, a sealing sheet is snapped into the mounting hole, the sealing sheet has a sealing hole in the middle for passing through the grinding disc and snapping into the boss of the grinding machine, and the side of the sealing sheet has a mounting groove for snapping into the dust cover; when the grinding machine moves due to the adjustment of the angle adjustment mechanism, the sealing sheet can slide to adapt to the movement of the grinding machine.

[0013] By adopting the above technical solution, the sealing plate can adapt to the movement caused by the angle adjustment of the grinder through its own sliding, ensuring the sealing effect between the dust cover and the grinder, effectively preventing dust from leaking from the connection between the dust cover and the grinder, and improving dust collection efficiency and dust prevention effect.

[0014] Optionally, the dust hood includes a connecting frame and a connecting hose. The connecting frame is provided with a connecting block, and the bottom of the connecting block is provided with connecting wheels. The connecting block is suspended on the lower protrusion of the manifold via the connecting wheels. One end of the connecting hose is connected to the connecting frame, and the end of the connecting hose away from the connecting frame is connected to the dust collection assembly. The mounting hole is opened on the connecting frame, so that the connecting frame is fitted onto the protrusion. When the grinder moves with the frame under the drive of the electric traction device, the connecting frame and the connecting hose will move synchronously with the grinder.

[0015] By adopting the above technical solution, the dust hood can move along with the grinding machine and the frame on the manifold. The setting of the connecting wheels makes the movement of the dust hood more stable, and at the same time prevents wear caused by friction between the two, thus extending the service life of the device. The connecting frame is sleeved on the boss, so that the connecting frame can adapt to the angle adjustment of the grinding machine and move together with the movement of the grinding machine, ensuring the flexibility and sealing of the dust hood and ensuring that the sealing effect is not affected.

[0016] Optionally, the dust collection assembly includes a dust collection pipe, with each end of the dust collection pipe connected to a connecting hose flange. Filters are installed inside both ends of the dust collection pipe, allowing only gas to pass through. A negative pressure dust collection fan is connected to the dust collection pipe to draw in the gas inside the dust collection hood, thereby driving the powder towards the air outlet of the dust collection hood.

[0017] By adopting the above technical solution, the negative pressure dust collector blower draws gas from the dust collection hood through the dust collection pipe, driving the powder to the air outlet of the dust collection hood. The filter screen can prevent dust from entering the dust collection pipe and only allow gas to pass through, thus achieving effective separation of dust and gas and ensuring the normal operation of the dust collection system. At the same time, the flange connection facilitates the disassembly of the connecting hose, thereby facilitating the collection and treatment of dust.

[0018] Optionally, the air intake pipe corresponds one-to-one with the grinding machine. One end of the air intake pipe is connected to the dust removal hood, and the other end extends into the dust removal hood and faces the corresponding grinding disc. The direction of airflow introduced by the air intake pipe is opposite to the rotation direction of the corresponding grinding disc. The air intake pipe is used to introduce outside air into the dust removal hood to realize air circulation inside the dust removal hood. At the same time, the outside air introduced by the air intake pipe is also used to blow away the dust generated by the grinding disc during grinding.

[0019] By adopting the above technical solution, the air intake pipe is used to introduce outside air into the dust removal hood, thereby realizing air circulation inside the dust removal hood, which helps to maintain gas flow inside the dust removal hood and reduce dust accumulation. The airflow direction introduced by the air intake pipe is opposite to the rotation direction of the grinding disc, which can effectively blow away the dust generated during grinding by the grinding disc, reduce the impact of residual dust on the grinding disc on the grinding effect of the contact line, and at the same time, make it easier for the dust to be collected by the dust collection component, further improving the dust collection effect.

[0020] Optionally, the connecting frame is equipped with a dust removal brush, which is located at the end of the connecting frame in the running direction. The dust removal brush is in contact with the contact line and is used to clean the dust remaining on the contact line.

[0021] By adopting the above technical solution, the dust removal brush is set at the end of the connecting frame in the running direction and in contact with the area of ​​the contact line to be ground. During the moving operation of the grinding machine, the dust remaining on the contact line generated by all the previous grinding machines can be removed, reducing the impact of dust residue on the performance of the contact line.

[0022] Optionally, the frame includes a left mounting plate and a right mounting plate, which are connected by several supporting crossbeams. The traveling mechanism includes suspended traveling wheels and V-groove traveling wheels. Each of the left and right mounting plates is connected to two suspended traveling wheels and two V-groove traveling wheels. The suspended traveling wheels are suspended on the lower protrusion of the busbar. The V-groove traveling wheels are fitted with the V-groove at the bottom of the busbar. Each of the left and right mounting plates is connected to a mounting handle.

[0023] By adopting the above technical solution, the frame adopts a structure with a left side plate, a right side plate, and a supporting crossbeam, which has high stability and strength; the combination of suspended travel wheels and V-groove travel wheels enables the frame to move smoothly on the busbar, ensuring the stability and accuracy of the grinder during travel.

[0024] Optionally, three grinding machines are provided, and three angle adjustment mechanisms are also provided accordingly. Two of the grinding machines and two of the angle adjustment mechanisms are provided on the left mounting plate, and one grinding machine and one of the angle adjustment mechanisms are provided on the right mounting plate.

[0025] By adopting the above technical solution and setting up three grinding machines and corresponding angle adjustment mechanisms, the contact wire can be ground from different angles, enabling more comprehensive treatment of wear at different angles on the surface of the contact wire, thus improving the accuracy and quality of grinding.

[0026] Optionally, the frame is connected to cylinders, the number of cylinders being the same as and corresponding one-to-one with the number of grinders. A thrust rod is connected above each cylinder, and a spring and a fixing block are sleeved on the thrust rod. One end of the spring is fixedly connected to the fixing block, and the end of the spring away from the fixing block is fixedly connected to the thrust rod. A limit nut is installed on the top of the thrust rod. A fixing plate is connected to the fixing block, and an angle adjustment mechanism is disposed on the fixing plate. The fixing plate and the grinders are connected through the angle adjustment mechanism. A slider is disposed on the fixing plate, and a slide rail is disposed on the frame, with the slider mounted on the slide rail.

[0027] By adopting the above technical solution, the cylinder is connected to the grinder through the thrust rod and the fixed block, which can control the lifting height of the grinder, allowing for height adjustment in addition to angle adjustment. This ensures that the grinding disc of the grinder can still contact the contact line after the angle has been adjusted. The spring provides a buffering effect during the grinding process, preventing excessive or insufficient grinding pressure and ensuring the uniformity of grinding. The cooperation between the slider and the slide rail allows the fixed plate and the grinder to move smoothly on the frame, facilitating the height adjustment of the grinder.

[0028] Optionally, the angle adjustment mechanism includes two fixed side plates, which are located on the same side of the fixed plate and are perpendicularly fixed to the fixed plate. The grinder is located between the two fixed side plates and is fixed to the two fixed side plates by adjusting nuts. A scale is provided on the fixed side plates, and an indicator is provided on the grinder. The pointer of the indicator is set opposite to the scale. The scale and the indicator are used to observe and record the adjustment angle of the grinder.

[0029] By adopting the above technical solution, the deflection angle between the grinder and the fixed side plate can be adjusted and fixed by adjusting the nut. The setting of the scale and indicator makes it easy to observe and record the adjustment angle of the grinder, making the angle adjustment more precise and intuitive. Operators can accurately adjust the angle of the grinder according to the actual grinding needs, which improves the accuracy and consistency of the grinding operation.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. By setting up dust hoods and dust collection components, the dust generated by the grinding machine when grinding the contact line can be effectively prevented from scattering, making it convenient to collect the dust and laying the foundation for subsequent environmental protection. It can also fundamentally solve the environmental impact of dust generated by the grinding machine when grinding the contact line, further prevent operators from inhaling dust, and effectively protect the health of operators.

[0032] 2. The adjustable design of the connecting frame and sealing plate allows it to move in conjunction with the displacement adjustment of the grinder to achieve a good sealing effect, ensuring the airtightness of the dust hood. This design effectively prevents dust leakage and significantly improves the dust collection efficiency and overall dust prevention effect of the dust collection system.

[0033] 3. The combined use of the angle adjustment mechanism and cylinders allows for more precise multi-angle adjustment of the grinder, ensuring accurate alignment with the area to be grinded on the contact line and guaranteeing the accuracy of the grinding work. The combination of three grinders at different angles not only significantly increases the grindable area of ​​the device but also makes the grindable surface of the contact line smoother, improving its surface flatness and thus enhancing its durability.

[0034] 4. The cylinder and spring configuration allows the grinder to adjust both angle and height, improving the flexibility and adaptability of the device. In addition, the cylinder and spring also provide good cushioning, effectively reducing vibration and impact during the grinding process, ensuring the uniformity and consistency of grinding, and improving the overall quality and effect of the grinding operation. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0036] Figure 2 This is a side structural diagram of the implementation of this application.

[0037] Figure 3 This is a top view of an embodiment of this application.

[0038] Figure 4 yes Figure 1 An enlarged schematic diagram of part A in the middle.

[0039] Figure 5 yes Figure 2 Enlarged schematic diagram of part B.

[0040] Figure 6 yes Figure 2 A schematic diagram of the cross-sectional structure.

[0041] Figure 7 This is a schematic diagram illustrating the structure of the traveling mechanism in the embodiments of this application.

[0042] Figure 8 yes Figure 6 An enlarged schematic diagram of section C.

[0043] Figure 9 yes Figure 7 An enlarged schematic diagram of part D in the middle.

[0044] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Mounting left side plate; 12. Mounting right side plate; 13. Support crossbeam; 14. Mounting handle; 2. Traveling mechanism; 21. Suspended travel wheel; 22. V-groove travel wheel; 31. Cylinder; 32. Thrust rod; 33. Spring; 34. Fixing block; 35. Limit nut; 36. Fixing plate; 37. Slider; 38. Slide rail; 4. Angle adjustment mechanism; 41. Fixed side plate; 42. Adjusting screw 43. Mother; 44. Dial; 5. Indicator; 6. Grinding machine; 51. Boss; 52. Grinding disc; 6. Dust hood; 61. Connecting bracket; 62. Connecting hose; 63. Connecting block; 64. Connecting caster; 65. Dust brush; 66. Air inlet pipe; 67. Mounting hole; 68. Sealing plate; 681. Sealing hole; 682. Mounting groove; 7. Dust collection assembly; 71. Dust collection pipe; 72. Filter screen; 73. Negative pressure dust collection fan. Detailed Implementation

[0045] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0046] This application discloses a contact wire polishing device with a dust collection device.

[0047] like Figure 1 and Figure 2 A contact wire polishing device with a dust collection unit includes a frame 1, an angle adjustment mechanism 4 and a traveling mechanism 2 connected to the frame 1, a polishing machine 5 connected to the angle adjustment mechanism 4, the angle adjustment mechanism 4 being used to adjust the deflection angle of the polishing machine 5, so that the polishing machine 5 can fit against the part of the contact wire that needs to be polished and polish it; a dust collection hood 6 is connected to the polishing machine 5, and a dust collection component 7 is connected to the frame 1, the dust collection component 7 being used to draw the dust generated during polishing from the dust collection hood 6 into the dust collection component 7, so as to facilitate subsequent centralized treatment and prevent it from spreading into the environment;

[0048] like Figure 2 and Figure 3 The frame 1 includes a left mounting plate 11 and a right mounting plate 12. The left mounting plate 11 and the right mounting plate 12 are fixedly connected by several support crossbeams 13. Each of the left mounting plate 11 and the right mounting plate 12 is provided with a mounting handle 14. The handle is located on the outside of the left mounting plate 11 and the right mounting plate 12 and is used to connect with an electric traction device to drive the movement of the entire device.

[0049] The traveling mechanism 2 includes suspended traveling wheels 21 and V-groove traveling wheels 22. The suspended traveling wheels 21 and V-groove traveling wheels 22 are located between the mounting left side plate 11 and the mounting right side plate 12. In this embodiment, two of each of the suspended traveling wheels 21 and V-groove traveling wheels 22 are rotatably arranged on the mounting left side plate 11 and the mounting right side plate 12. Furthermore, the suspended traveling wheels 21 and V-groove traveling wheels 22 on the mounting left side plate 11 are symmetrically arranged with the suspended traveling wheels 21 and V-groove traveling wheels 22 on the mounting right side plate 12. The suspended traveling wheels 21 are located above the V-groove traveling wheels 22.

[0050] The suspended traveling wheel 21 is suspended on the lower protrusion of the busbar, allowing the entire device to roll and move on the busbar. The diameter of the suspended traveling wheel 21 needs to be smaller than the distance between the upper and lower protrusions of the busbar. The V-shaped protrusion of the V-groove traveling wheel 22 fits into the V-groove at the bottom of the busbar, allowing it to move along the V-groove along a fixed path, thus limiting and guiding the frame 1.

[0051] like Figure 3 and Figure 4 In this embodiment, two slide rails 38 are installed on the side of the left side plate 11 facing away from the busbar. The two slide rails 38 are located on both sides of the left side plate 11 and are vertically arranged. One slide rail 38 is installed on the side of the right side plate 12 facing away from the busbar. The slide rail 38 is located on the right side of the right side plate 12. Each slide rail 38 is provided with a slider 37, which is slidably connected to the slide rail 38. A fixing plate 36 is fixedly connected to the side of the slider 37 facing away from the slide rail 38. An angle adjustment mechanism 4 is connected to one end of the fixing plate 36, and the angle adjustment mechanism 4 is connected to the grinder 5. A fixed block 34 is connected to one end of the fixed plate 36 away from the angle adjustment mechanism 4. A push rod 32 is passed through the fixed block 34. A limit nut 35 is connected to the top of the push rod 32. A spring 33 is sleeved on the push rod 32. One end of the spring 33 is fixedly connected to the fixed block 34, and the other end is fixedly connected to the top of the annular protrusion on the push rod 32. Two cylinders 31 are installed on the left side plate 11 and one cylinder 31 is installed on the right side plate 12. The number of cylinders 31 is equal to the number of slide rails 38 and corresponds one-to-one. The cylinders 31 are connected to the push rod 32.

[0052] The cylinder 31 drives the push rod 32 to move up and down, which in turn drives the fixed plate 36 to move, thereby enabling the grinder 5 to move vertically. When the grinder 5 needs to grind the contact line at different positions, the grinder 5 is first adjusted to a suitable angle, and then the cylinder 31 is controlled to drive the grinder 5 to move, so that the grinding disc 52 of the grinder 5 can fit against the contact line, thereby performing grinding.

[0053] like Figure 4 and Figure 5The angle adjustment mechanism 4 includes two fixed side plates 41, both of which are fixedly connected to the fixed plate 36. The two fixed side plates 41 are located on the same side of the fixed plate 36 and are perpendicular to each other. The grinder 5 is located between the two fixed side plates 41. A scale 43 is provided on the fixed side plate 41 on the side away from the fixed block 34. The scale 43 is located on the outside of the fixed side plate 41.

[0054] The fixed side plate 41 is L-shaped. Each of the two fixed side plates 41 has an adjusting nut 42 connected to its horizontal section. Both fixed side plates 41 are fixedly connected to the grinder 5 through the adjusting nuts 42. When the angle needs to be adjusted, the adjusting nuts 42 are removed, the grinder 5 is adjusted to a suitable angle, and then the fixed side plates 41 and the grinder 5 are tightened and fixed with the adjusting nuts 42.

[0055] The end of the grinder 5 near the dial 43 is connected to an indicator 44. The indicator 44 is F-shaped, and its two short sides are fixed to the surface of the base of the grinder 5, so that its long side is in the same direction as the dial 43 and points to the dial 43. Its long side acts as a pointer and is set opposite to the dial 43. The dial 43 and the indicator 44 are used together to observe the adjustment angle of the grinder 5 and to record its adjustment angle.

[0056] like Figure 1 and Figure 3 There are three grinding machines 5. One is located at the front end of the frame 1 in the running direction, and two are located at the rear end of the frame 1 in the running direction. The two grinding machines 5 located at the rear end of the frame 1 in the running direction are located on different sides of the frame 1.

[0057] The grinding machine 5 at the front end of the frame 1 in the running direction is mounted on the left side plate 11, and the grinding disc 52 of the grinding machine 5 is set horizontally for grinding the lower surface of the contact line.

[0058] The grinding machines 5 at the rear end of the frame 1 in the running direction are respectively mounted on the left side plate 11 and the right side plate 12. The grinding disc 52 of the grinding machine 5 mounted on the left side plate 11 is set to be lower on the left and higher on the right, and is used to grind the sharp corner on the right side of the wear plane at the bottom of the contact line. The grinding disc 52 of the grinding machine 5 mounted on the right side plate 12 is set to be higher on the left and lower on the right, and is used to grind the sharp corner on the left side of the wear plane at the bottom of the contact line.

[0059] The front end of the frame 1 in the direction of travel has one grinding machine 5, and the rear end of the frame 1 in the direction of travel has two grinding machines 5.

[0060] like Figure 3 , Figure 6 and Figure 7The dust collection assembly 7 includes a dust collection pipe 71, which is fixed between the mounting left side plate 11 and the mounting right side plate 12. A negative pressure dust collection fan 73 is installed at the bottom of the dust collection pipe 71. The negative pressure dust collection fan 73 is used to draw gas from the dust collection hood 6, so that the gas carries the dust in the dust collection hood 6 to the dust collection pipe 71. Both ends of the dust collection pipe 71 are equipped with filter screens 72, which only allow gas to pass through and are used to intercept the dust flowing to the dust collection pipe 71 at the air outlet of the connecting hose 62.

[0061] There are two dust covers 6, located at the front end of the frame 1 in the direction of travel and at the rear end of the frame 1 in the direction of travel, respectively, for the grinding machines 5. The dust cover 6 located at the front end of the frame 1 in the direction of travel has two mounting holes 67 at its bottom, and the dust cover 6 located at the rear end of the frame 1 in the direction of travel has one mounting hole 67 at its bottom. They are respectively fitted onto the boss 51 part of the corresponding grinding machine 5. The number of mounting holes 67 of each dust cover 6 is equal to the number of grinding machines 5 it covers and they correspond one-to-one.

[0062] like Figures 6 to 8 The dust cover 6 includes a connecting frame 61, which covers the grinding disc 52 and the boss 51 of the grinder 5. The mounting hole 67 is located at the bottom of the connecting frame 61 and is waist-shaped. A sealing plate 68 is provided on the mounting hole 67. The side of the sealing plate 68 has a mounting groove 682, so that the longitudinal section of the sealing plate 68 is I-shaped. The connecting part of the connecting frame 61 and the sealing plate 68 can be inserted into the mounting groove 682. A sealing hole 681 is provided in the middle of the sealing plate 68. The sealing hole 681 is used to fit the boss 51 onto the sealing plate 68, so that the grinding working area of ​​the grinder 5 can be completely located within the connecting frame 61.

[0063] A connecting block 63 is provided on the connecting frame 61. The connecting block 63 is located above the lower protrusion of the busbar. Several connecting wheels 64 are provided at the bottom of the connecting block 63. The connecting wheels 64 are suspended on the lower protrusion of the busbar.

[0064] like Figure 2 The shapes of the two sides of the connecting frame 61 are perfectly matched with the lower surface contours of the busbar and the contact line, ensuring that the connecting frame 61 fits tightly with the busbar and can effectively prevent dust leakage during the moving process of the connecting frame 61.

[0065] like Figure 3 and Figure 7The connecting frame 61 is equipped with an air inlet pipe 66. The number of air inlet pipes 66 is equal to and corresponds to the number of grinders 5. The air inlet pipe 66 is used to introduce outside air in time to fill the dust hood 6 when the dust collection component 7 is sucking the air in the dust collection hood 6, so that the gas inside the dust collection hood 6 can circulate. The gas can be drawn into the pipe from the outside and discharged from the dust collection component 7, so that the airflow carries the dust to the dust collection component 7. One end of the air inlet pipe 66 is connected to the connecting frame 61, and the end of the air inlet pipe 66 away from the connecting frame 61 extends into the connecting frame 61, so that the introduced airflow can blow towards the grinding disc 52. Moreover, the flow direction of the airflow is opposite to the rotation direction of the grinding disc 52 it blows towards, so that the airflow can blow away the dust generated by grinding on the grinder 5.

[0066] A dust removal brush 65 is provided on the connecting frame 61. The dust removal brush 65 is located at the rear end in the running direction, with the bristles of the dust removal brush 65 facing upward and in contact with the contact line, and is used to clean the dust remaining on the grinding area of ​​the contact line.

[0067] like Figure 7 and Figure 9 The dust hood 6 includes a connecting hose 62, the air outlet of the connecting hose 62 is connected to the air inlet of the corresponding end of the dust suction pipe 71, the connecting hose 62 is connected to the flange of the dust suction pipe 71, and the end of the connecting hose 62 away from the dust suction pipe 71 is connected to the connecting frame 61.

[0068] The implementation principle of this application embodiment is as follows: during installation, the connecting bracket 61 is first fitted onto the boss 51 of the grinding machine 5, and then the grinding disc 52 is installed.

[0069] When the contact wire needs to be polished, first observe the wear condition of the contact wire and analyze the parts that need to be polished based on the wear condition. Adjust the tilt angle of the two tilting polishers 5 by adjusting the angle adjustment mechanism 4, and then control the cylinder 31 to adjust its lifting height so that it can fit the sharp corner of the contact wire that needs to be polished. Similarly, adjust the lifting height of the horizontal polisher 5 so that it fits the bottom surface of the contact wire.

[0070] The combined design of the dust cover 6 and the sealing plate 68 can effectively prevent the dust inside the dust cover 6 from spreading to the outside. The dust cover 6 is fitted onto the boss 51 part of the grinder 5 and connected to the traveling wheel 64 so that the dust cover 6 can move synchronously with the frame 1.

[0071] The negative pressure dust collector 73 and the polisher 5 are turned on simultaneously. The three polishers 5 polish the contact line at three different angles, so that the bottom surface and the two sharp corners of the contact line can be fully polished. After the air in the dust hood 6 is sucked away, the outside air flows in from the air inlet pipe 66 and blows towards the polishing disc 52. Since the air inflow direction is opposite to the rotation direction of the polishing disc 52, the dust on the polishing disc 52 can be blown away more effectively and the dust can be driven by the air to flow towards the air outlet.

[0072] The electric traction equipment is connected to the frame 1 via the mounting handle 14, and drives the frame 1 and the entire device to move forward. The suspended running wheels 21 can suspend the frame 1 on the busbar and move synchronously with the electric traction equipment. The V-groove running wheels 22 can position and guide the device so that it does not deviate from the working path.

[0073] A dust removal brush 65 is installed at the end of the running direction of the frame 1 to remove the dust remaining on the contact line generated by all the grinding machines 5 in front, further ensuring the smoothness and cleanliness of its surface and preventing the dust from affecting its operation safety.

[0074] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A contact wire polishing device with a dust extraction unit, characterized in that: Includes a frame (1), at least one grinding machine (5) is connected to each end of the frame (1), and an angle adjustment mechanism (4) is connected to the grinding machine (5). The angle adjustment mechanism (4) is used to adjust the deflection angle of the grinding machine (5) so that the grinding disc (52) of the grinding machine (5) can fit with the part of the contact line that needs to be ground. The grinding machine (5) and the angle adjustment mechanism (4) are connected one-to-one. A traveling mechanism (2) is provided on the frame (1), and the frame (1) slides on the busbar through the traveling mechanism (2). Dust hoods (6) are provided at both ends of the frame (1). The air outlets of the two dust hoods (6) are connected to a dust suction assembly (7). The dust suction assembly (7) is fixed on the frame (1). The end of the dust hood (6) away from the dust suction assembly (7) can be slidably mounted on the manifold. The dust hood (6) covers the grinding disc (52) and boss (51) of the grinder (5). An air inlet pipe (66) is provided on the dust hood (6). The dust cover (6) is fitted onto the boss (51) of the grinder (5). When the grinder (5) moves along with the frame (1) under the drive of the electric traction device, it will move the dust cover (6) together. The dust cover (6) has an installation hole (67) and a sealing plate (68) is fitted into the installation hole (67). The sealing plate (68) has a sealing hole (681) in the middle. The sealing hole (681) is used to pass through the grinding disc (52) and is fitted onto the boss (51) of the grinding machine (5). The side of the sealing plate (68) has an installation groove (682) for engaging with the dust cover (6). When the grinding machine (5) moves due to the adjustment of the angle adjustment mechanism (4), the sealing plate (68) can slide to adapt to the movement of the grinding machine (5). The dust cover (6) includes a connecting frame (61) and a connecting hose (62). A connecting block (63) is provided on the connecting frame (61). A connecting wheel (64) is provided at the bottom of the connecting block (63). The connecting block (63) is suspended on the lower protrusion of the manifold through the connecting wheel (64). One end of the connecting hose (62) is connected to the connecting frame (61), and the other end of the connecting hose (62) away from the connecting frame (61) is connected to the dust collection assembly (7). The mounting hole (67) is opened on the connecting frame (61), so that the connecting frame (61) is fitted on the boss (51). When the grinder (5) moves with the frame (1) under the drive of the electric traction device, the connecting frame (61) and the connecting hose (62) will move synchronously with the grinder (5). The dust collection assembly (7) includes a dust collection pipe (71), with each end of the dust collection pipe (71) connected to a flange of a connecting hose (62). Filter screens (72) are provided inside both ends of the dust collection pipe (71), and the filter screens (72) only allow gas to pass through. A negative pressure dust collection fan (73) is connected to the dust collection pipe (71) to draw gas from the dust collection hood (6), thereby driving the powder to flow to the air outlet of the dust collection hood (6).

2. The contact wire polishing device with a dust extraction device according to claim 1, characterized in that: The air intake pipe (66) corresponds one-to-one with the grinding machine (5). One end of the air intake pipe (66) is connected to the dust removal hood (6), and the other end extends into the dust removal hood (6) and faces the corresponding grinding disc (52). The direction of airflow introduced by the air intake pipe (66) is opposite to the rotation direction of the corresponding grinding disc (52). The air intake pipe (66) is used to introduce outside air into the dust removal hood (6) to realize air circulation in the dust removal hood (6). At the same time, the outside air introduced by the air intake pipe (66) is also used to blow away the dust generated by the grinding disc (52) during grinding.

3. The contact wire polishing device with a dust extraction device according to claim 1, characterized in that: The connecting frame (61) is provided with a dust removal brush (65), which is located at the end of the connecting frame (61) in the running direction. The dust removal brush (65) is in contact with the contact line and is used to clean the dust remaining on the contact line.

4. The contact wire polishing device with a dust extraction device according to claim 1, characterized in that: The frame (1) includes a mounting left side plate (11) and a mounting right side plate (12), which are connected by several supporting crossbeams (13). The traveling mechanism (2) includes suspended traveling wheels (21) and V-groove traveling wheels (22). Each of the mounting left side plate (11) and the mounting right side plate (12) is connected to two of the suspended traveling wheels (21) and two of the V-groove traveling wheels (22). The suspended traveling wheels (21) are suspended on the lower protrusion of the busbar. The V-groove traveling wheels (22) are in contact with the V-groove at the bottom of the busbar. Each of the mounting left side plate (11) and the mounting right side plate (12) is connected to a mounting handle (14).

5. The contact wire polishing device with a dust extraction device according to claim 4, characterized in that: There are three grinding machines (5) and three angle adjustment mechanisms (4). Two grinding machines (5) and two angle adjustment mechanisms (4) are installed on the left side plate (11), and one grinding machine (5) and one angle adjustment mechanism (4) are installed on the right side plate (12).

6. The contact wire polishing device with a dust extraction device according to claim 4, characterized in that: The frame (1) is connected to cylinders (31), the number of cylinders (31) is the same as the number of the grinding machine (5) and they correspond one-to-one. A thrust rod (32) is connected above the cylinder (31). A spring (33) and a fixing block (34) are sleeved on the thrust rod (32). One end of the spring (33) is fixedly connected to the fixing block (34), and the end of the spring (33) away from the fixing block (34) is fixedly connected to the thrust rod (32). A limit nut (35) is installed on the top of the thrust rod (32). The fixing block (34) is connected to a fixing plate (36). The angle adjustment mechanism (4) is set on the fixing plate (36). The fixing plate (36) and the grinder (5) are connected through the angle adjustment mechanism (4). A slider (37) is set on the fixing plate (36). A slide rail (38) is set on the frame (1). The slider (37) is installed on the slide rail (38).

7. The contact wire polishing device with a dust extraction device according to claim 6, characterized in that: The angle adjustment mechanism (4) includes two fixed side plates (41), which are located on the same side of the fixed plate (36) and are vertically fixed to the fixed plate (36). The grinder (5) is located between the two fixed side plates (41) and is fixed to the two fixed side plates (41) by adjusting nuts (42). A scale (43) is provided on the fixed side plate (41), and an indicator (44) is provided on the grinder (5). The pointer of the indicator (44) is set opposite to the scale (43). The scale (43) and the indicator (44) are used to observe and record the adjustment angle of the grinder (5).

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