Automatic injection and coating device for rigid contact net conductive grease

Abstract

The rigid contact net conductive grease automatic injection coating device, including mobile assembly, injection coating suspension trolley, hydraulic device and electrical control cabinet, mobile assembly is used to drive injection coating suspension trolley to move along the direction of busbar;Injection coating suspension trolley includes frame assembly and coating assembly;Frame assembly includes a pair of side plates fixedly connected through connecting piece and suspension wheel and guide top wheel rotatably connected to the inner side of two side plates;Frame assembly is provided with coating assembly in the middle, and coating assembly includes pressing mechanism and oil injection nozzle;Hydraulic device and electrical control cabinet are arranged on mobile assembly;Hydraulic device is communicated with oil injection nozzle through oil injection pipe;Electrical control cabinet is connected with walking encoder through control cable, and walking encoder is installed on guide top wheel;The present application can effectively solve the problems of uneven coating, poor coating quality, high loss rate and low efficiency when traditional manual contact line erection is coated with conductive grease, improve the coating coverage of conductive grease, and reduce the safety risk.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rigid contact network, in particular to the automatic injection and coating device for the conductive grease of rigid contact network. BACKGROUND

[0002] At present, urban rail transit is developing rapidly, and underground tunnels mainly use rigid contact network to supply power to electric locomotives. The rigid contact network is mainly composed of aluminum alloy busbars and copper alloy contact wires. During the erection of the rigid contact network, the dovetail groove of the copper alloy contact wire is clamped in the clamping groove of the aluminum alloy busbar for installation and fixation. Due to the difference in material between the two materials, in order to ensure good conductivity between the two materials and prevent electrical corrosion between different materials, conductive grease can be applied to reduce the transition resistance and electrical corrosion between the busbar and the contact wire. In the existing construction process, the construction method of manually applying conductive grease is mainly used. This method has the problems of uneven application, poor application quality, high loss rate and low efficiency, especially the uneven application of conductive grease and poor application quality, which can easily lead to large transition resistance and increase the safety risk of contact wire disengagement. At the same time, manual application of conductive grease has certain safety risks. SUMMARY

[0003] The purpose of the present application is to solve the problems existing in the prior art, provide an automatic injection and coating device for the conductive grease of rigid contact network, which can effectively solve the problems of uneven application, poor application quality, high loss rate and low efficiency of traditional manual injection and coating of conductive grease during the erection of contact wire, improve the application coverage rate of conductive grease, and reduce the safety risk in the construction process.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is:

[0005] The automatic injection and coating device for the conductive grease of rigid contact network comprises a moving assembly, an injection and coating suspension trolley, a hydraulic device and an electrical control cabinet. The moving assembly is used to drive the injection and coating suspension trolley to move along the direction of the busbar. The injection and coating suspension trolley comprises a frame assembly and a coating and injection assembly. The frame assembly comprises a pair of side plates fixedly connected through connecting pieces and a suspension wheel and a guide top wheel rotatably connected to the inner sides of the two side plates. The coating and injection assembly is arranged in the middle of the frame assembly. The coating and injection assembly comprises a pressing mechanism and an oil injection nozzle abutting against the two sides of the contact wire. The moving assembly is provided with the hydraulic device and the electrical control cabinet. The hydraulic device is in communication with the oil injection nozzle through an oil injection pipe. The electrical control cabinet is connected with a travel encoder through a control cable. The travel encoder is installed on the guide top wheel, and the guide top wheel abuts against the encoder disc of the travel encoder. The travel encoder is used to collect the motion state of the injection and coating suspension trolley and send a signal to the electrical control cabinet to start or stop the injection and coating of conductive grease.

[0006] In the above scheme, the moving assembly drives the injection and coating suspension trolley to move along the busbar direction. When the injection and coating suspension trolley moves, the position of the injection nozzle and the dovetail groove of the contact wire is manually adjusted, the injection nozzle is pressed on both sides of the dovetail groove of the contact wire, the conductive grease is accurately injected and coated in the dovetail groove of the contact wire about to be embedded in the busbar, and the uniformity is achieved through the brushing of the oil brush, which does not affect the embedding of the contact wire in the busbar, and realizes the high-quality construction of the conductive grease coating in the process of the contact wire erection. The walking encoder collects the motion state of the injection and coating suspension trolley and sends a signal to the electrical control cabinet to start or stop the injection and coating of the conductive grease. The electrical control cabinet controls the start and stop of the hydraulic device, and can manually adjust the injection pressure of the conductive grease to control the oil outlet speed of the conductive grease, thereby avoiding the waste of the conductive grease.

[0007] Further, the moving assembly includes a track operation vehicle and a pay-off trolley, the moving assembly is connected with the pay-off trolley through a traction rope, the pay-off trolley is suspendedly installed on the busbar, the track operation vehicle drives the pay-off trolley to move forward through the traction rope, and the injection and coating suspension trolley is placed on the forward side of the pay-off trolley. The pay-off trolley moves against the injection and coating suspension trolley, so that the working state of the injection and coating suspension trolley is kept synchronous with the pay-off operation at any time, and the injection and coating of the conductive grease of the contact wire is ensured to be free of missing coating.

[0008] Further, the rear side of the side plate is inclined, the inclination angle of the rear side of the side plate is consistent with the inclination angle of the front end of the contact wire pay-off trolley, and the frame of the injection and coating suspension trolley is uniformly stressed when the frame is pushed by the contact wire pay-off trolley.

[0009] Further, the suspension wheels are provided in two groups, the two groups of suspension wheels are provided in front and back, and the suspension wheels are arranged on the upper end of the convex edge of the busbar. The injection and coating suspension trolley can be conveniently suspended on the busbar through the suspension wheels, and various sizes of busbars can be coped with by adjusting the relative distance of the suspension wheels in the same group.

[0010] Further, the guide top wheels are provided in two groups, the two groups of guide top wheels are provided in front and back, the guide top wheels are connected between the two side plates through a through shaft, one guide top wheel is rotatably connected to each side of the through shaft, and the guide top wheels are arranged on the lower end of the convex edge of the busbar. The guide top wheels and the suspension wheels roll forward uniformly on the busbar, and various sizes of busbars can be coped with by adjusting the relative distance of the guide top wheels in the same group.

[0011] Further, the pressing mechanism includes a pressing plate and a tension spring, and the middle part of the side plate is provided with a hole. The front ends of the pair of pressing plates pass through the hole and are arranged in a V-shaped structure between the two side plates. The rear ends of the pressing plates are hinged to the side plates, and the front ends of the two pressing plates are connected by the tension spring. The injection nozzle can be effectively prevented from being separated from the position of the contact wire groove due to vibration during the pay-off process by using the pressing mode.

[0012] Further, the front end inner side of the top pressing plate is provided with an oil injection nozzle, the nozzle of the oil injection nozzle is a tapered structure, and is matched with the dovetail groove of the contact wire, the angle between the oil injection nozzle and the center line of the injection and coating suspension trolley is 60 degrees, the nozzle of the oil injection nozzle faces the wire leaving direction of the contact wire, the oil injection nozzle has a certain activity allowance and can swing in a small range up and down and left and right, the distance between the nozzles of the two oil injection nozzles is less than the size of the contact wire, so that the conductive grease is accurately injected and coated in the dovetail groove of the contact wire about to be embedded in the busbar, and the contact wire is prevented from being scratched during the injection and coating process, the dovetail groove of the contact wire is continuously injected and coated with conductive grease while the contact wire is erected, the injection and coating efficiency is high, and the injection and coating quality and effect are good.

[0013] Further, the middle part of the top pressing plate is provided with an oil brush, and the oil is brushed through the oil brush after injection and coating, so that the conductive grease after injection and coating is evenly and comprehensively covered.

[0014] Further, the hydraulic device comprises a motor, an oil pump, a hydraulic oil tank, a hydraulic oil cylinder, an oil storage tank and an oil injection pipe, the track operation vehicle is provided with a power supply, the power supply controls the motor to start through an electrical control cabinet, the motor drives the oil pump to suck oil from the hydraulic oil tank, the hydraulic oil tank is connected with the hydraulic oil cylinder through a pipeline, and the oil storage tank is connected with the oil injection nozzle through the oil injection pipe.

[0015] Further, the pipeline connected with the hydraulic oil cylinder is provided with an oil suction filter, a one-way valve, a pressure transmitter, a pressure gauge, an accumulator, an electromagnetic reversing valve, a throttle valve and an overflow valve, the hydraulic oil tank is provided with a vent, the vent is provided with an air filter, the inside of the hydraulic oil tank is provided with a liquid level meter, the hydraulic device and the electrical control cabinet are designed to be integrated, and the occupied space of the equipment is saved.

[0016] Compared with the prior art, the beneficial effects of the present application are:

[0017] 1. The injection and coating position and oil amount of the present application are accurately controlled, the waste of materials is reduced, and the construction cost is saved;

[0018] 2. The conductive grease injected and coated by the present application is uniform, the coating quality is good, the injection and coating efficiency is high, and the leakage coating condition can be effectively avoided;

[0019] 3. The present application can reduce the labor input, realize more scientific and efficient rigid contact net contact wire erection operation, avoid the safety risk of high-altitude operation existing in manual coating of conductive paste, and avoid the safety accidents of finger pinch in the process of taking out the contact wire. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure schematic view of the suspension injection and coating trolley of the present application.

[0021] Figure 2Front view of the suspension coating trolley of the present application;

[0022] Figure 3 Side view of the suspension coating trolley of the present application;

[0023] Figure 4 Top view of the suspension coating trolley of the present application;

[0024] Figure 5 Front view of the hydraulic control system integration device of the present application;

[0025] Figure 6 Top view of the hydraulic control system integration device of the present application;

[0026] Figure 7 Overall structure installation schematic diagram of the rigid contact network conductive grease automatic injection coating device of the present application;

[0027] Figure 8 Working principle diagram of the hydraulic system of the present application;

[0028] In the figure: 1, moving assembly; 11, track operation vehicle; 12, pay-off trolley; 13, traction rope; 2, coating suspension trolley; 3, busbar; 4, vehicle frame assembly; 41, connecting piece; 42, side plate; 43, suspension wheel; 44, guide top wheel; 45, pad plate; 46, fixed adjusting bolt; 47, through shaft; 48, shaft end nut; 5, coating assembly; 51, pressing mechanism; 52, oil injection nozzle; 53, pressing plate; 54, tension spring; 55, pressing plate support; 56, oil brush; 6, hydraulic device; 61, motor; 62, oil pump; 63, hydraulic oil tank; 64, hydraulic oil cylinder; 65, oil storage tank; 66, oil injection pipe; 67, pipeline; 671, oil suction filter; 672, one-way valve; 673, pressure transmitter; 674, pressure gauge; 675, accumulator; 676, electromagnetic reversing valve; 677, throttle valve; 678, overflow valve; 68, air filter; 69, liquid level meter; 7, electrical control cabinet; 8, control cable; 9, walking encoder; 91, encoding disc. DETAILED DESCRIPTION

[0029] The technical solutions of the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] As Figures 1-8As shown, the embodiment provides a rigid contact network conductive grease automatic injection coating device, which comprises a moving assembly 1, an injection coating suspension trolley 2, a hydraulic device 6 and an electrical control cabinet 7. The moving assembly 1 is used to drive the injection coating suspension trolley 2 to move along the direction of the busbar 3. The injection coating suspension trolley 2 comprises a frame assembly 4 and a coating assembly 5. The frame assembly 4 comprises a pair of side plates 42 fixedly connected through connecting pieces 41 and a suspension wheel 43 and a guide top wheel 44 rotatably connected to the inner sides of the two side plates 42. The coating assembly 5 is arranged at the middle part of the frame assembly 4. The coating assembly 5 comprises a pressing mechanism 51 and an oil injection nozzle 52 abutting against the two sides of the contact wire. The moving assembly 1 is provided with the hydraulic device 6 and the electrical control cabinet 7. The hydraulic device 6 is in communication with the oil injection nozzle 52 through an oil injection pipe 66. The electrical control cabinet 7 is connected with a walking encoder 9. The walking encoder 9 is installed on the guide top wheel 44 and abuts against the encoder disc of the walking encoder 9. The walking encoder 9 is used to collect the motion state of the injection coating suspension trolley 2 and send a signal to the electrical control cabinet 7 to start or stop the conductive grease injection coating.

[0031] In the above scheme, the injection coating suspension trolley 2 is placed on the advancing side of the pay-off trolley 12. The track operation vehicle 11 drives the pay-off trolley 12 to advance through the traction rope 13. The pay-off trolley 12 moves against the injection coating suspension trolley 2 to form linkage. The working state of the injection coating suspension trolley 2 is kept synchronous with the pay-off operation at all times to ensure that the conductive grease injection coating of the contact wire will not appear missed coating. When the injection coating suspension trolley 2 is in action, the position of the oil injection nozzle 52 and the dovetail groove of the contact wire is manually adjusted. The oil injection nozzle 52 is pressed on both sides of the dovetail groove of the contact wire to ensure that the conductive grease is accurately injected and coated in the dovetail groove of the contact wire about to be embedded in the busbar 3 and is evenly coated by the oil brush 56 without affecting the embedding of the contact wire in the busbar 3 to realize the high-quality construction of the conductive grease coating in the contact wire erection process. The electrical control cabinet 7 controls the start and stop of the hydraulic device 6. Meanwhile, the injection pressure of the conductive grease can be manually adjusted to control the oil discharge speed of the conductive grease to avoid waste of the conductive grease.

[0032] Further, the moving assembly 1 comprises the track operation vehicle 11 and the pay-off trolley 12. The moving assembly 1 is connected with the pay-off trolley 12 through the traction rope 13. The pay-off trolley 12 is suspendedly installed on the busbar 3. The track operation vehicle 11 drives the pay-off trolley 12 to advance through the traction rope 13. The coating suspension trolley is placed on the advancing side of the pay-off trolley 12. The pay-off trolley 12 moves against the coating suspension trolley to form linkage. The working state of the injection coating suspension trolley 2 is kept synchronous with the pay-off operation at all times to ensure that the conductive grease injection coating of the contact wire will not appear missed coating.

[0033] Further, the rear side of the side plate 42 is inclined, and the inclination angle of the rear side of the side plate 42 matches the inclination angle of the front end of the contact line stringing trolley 12, so that the frame of the injection coating suspension trolley 2 is uniformly stressed when the frame is pushed by the contact line stringing trolley 12.

[0034] Further, the suspension wheels 43 are provided in two groups, and the suspension wheels 43 in the same group are oppositely arranged, the suspension wheels 43 are arranged on the upper end of the convex edge of the busbar 3, the suspension wheels 43 are installed on the inner side of the side plate 42 through the gasket 45 and the fixed adjusting bolt 46, the gasket 45 is fixedly connected to the outer side of the side plate 42, the gasket 45 is threadedly connected to the fixed adjusting bolt 46, and the suspension wheels 43 are fixedly connected to the fixed adjusting bolt 46. The injection coating suspension trolley 2 can be conveniently suspended on the busbar 3 through the suspension wheels 43, and various sizes of busbars 3 can be coped with by adjusting the relative distance of the suspension wheels 43 in the same group.

[0035] Further, the guide top wheels 44 are provided in two groups, and the guide top wheels 44 in the same group are oppositely arranged, the guide top wheels 44 are arranged on the lower end of the convex edge of the busbar 3, the guide top wheels 44 are rotatably connected between the two side plates 42 through the through shaft 47, the guide top wheels 44 are connected between the two side plates 42 through the through shaft 47, one guide top wheel 44 is rotatably connected to each side of the through shaft 47, shaft end nuts 48 are arranged at the two ends of the through shaft 47, and various sizes of busbars 3 can be coped with by adjusting the relative distance of the guide top wheels 44 in the same group, so that the guide top wheels 44 and the suspension wheels 43 can uniformly roll on the busbar 3, and high-quality construction of the conductive grease coating in the contact line erection process is realized.

[0036] Further, the top pressing mechanism 51 includes a top pressing plate 53 and a tension spring 54, a hole is arranged in the middle of the side plate 42, the front end of the top pressing plate 53 is arranged in a V-shaped structure between the two side plates 42 through the hole, a top pressing plate support 55 is welded on the side plate 42, the rear end of the top pressing plate 53 is installed on the top pressing plate support 55, and the front ends of the two top pressing plates 53 are connected by the tension spring 54, so that a certain pressing force is maintained between the top pressing plates 53. The top pressing mode can effectively prevent the oil nozzle 52 from being separated from the position of the contact line slot due to vibration during the stringing process.

[0037] Further, the front end inner side of the top pressing plate 53 is provided with an oil injection nozzle 52, the nozzle of the oil injection nozzle 52 is a tapered structure, and is matched with the dovetail groove of the contact wire, the angle between the oil injection nozzle 52 and the center line of the coating suspension trolley 2 is 60°, the nozzle of the oil injection nozzle 52 faces the wire removal direction of the contact wire, the oil injection nozzle 52 has a certain activity allowance and can swing in a small range up and down and left and right, the distance between the nozzles of the two oil injection nozzles 52 is less than the size of the contact wire, so that the conductive grease is accurately injected and coated in the dovetail groove of the contact wire about to be embedded in the busbar 3, and the contact wire is prevented from being scratched during the coating process. The dovetail groove of the contact wire is continuously coated with conductive grease while the contact wire is erected, the coating efficiency is high, and the coating quality and effect are good.

[0038] Further, the middle part of the top pressing plate 53 is provided with an oil brush 56, and the conductive grease after coating is brushed by the oil brush 56 to make the conductive grease coated uniformly and comprehensively.

[0039] Further, the hydraulic device 6 includes a motor 61, an oil pump 62, a hydraulic oil tank 63, a hydraulic oil cylinder 64, an oil storage tank 65 and an oil injection pipe 66, the track operation vehicle 11 is provided with a power supply, the power supply controls the motor 61 to start through the electrical control cabinet 7, the motor 61 drives the oil pump 62 to suck oil from the hydraulic oil tank 63, the hydraulic oil tank 63 is connected with the hydraulic oil cylinder 64 through a pipeline 67, the oil storage tank 65 is connected with the oil injection nozzle 52 through the oil injection pipe 66; The pipeline 67 connected with the hydraulic oil cylinder 64 is provided with an oil suction filter 671, a one-way valve 672, a pressure transmitter 673, a pressure gauge 674, an accumulator 675, an electromagnetic reversing valve 676, a throttle valve 677 and an overflow valve 678. The hydraulic oil tank 63 is provided with a vent, the vent is provided with an air filter 68, the inside of the hydraulic oil tank 63 is provided with a liquid level meter 69, the hydraulic device 6 and the electrical control cabinet 7 are designed and integrated, which saves the equipment occupied space.

[0040] When the track operation vehicle 11 travels, the traction rope 13 fixed on the track operation vehicle 11 pulls the pay-off trolley 12 to move, thereby driving the injection and coating suspension trolley 2 to move. After the travel is sensed by the travel encoder 9 installed on the injection and coating trolley, a control signal is transmitted to the electrical control cabinet 7. The electrical control cabinet 7 controls the motor 61 to start, the 1DT of the electromagnetic reversing valve 676 is electrified, the oil pump 62 sucks oil from the hydraulic oil tank 63 through the oil suction filter 671, the one-way valve 672, the left position of the electromagnetic reversing valve 676 and the left position of the superimposed throttle valve 677 to enter the cavity of the hydraulic oil cylinder 64A to push the hydraulic oil cylinder 64 to press down, the B cavity hydraulic oil passes through the right position of the superimposed throttle valve 677 and the left position of the electromagnetic reversing valve 676, thereby sending the conductive grease in the oil storage tank 65 to the injection nozzle 52 on the injection and coating suspension trolley 2 through the oil injection pipe 66. The injection nozzle 52 is pressed on both sides of the dovetail groove of the contact wire to ensure that the conductive grease is accurately injected and coated in the dovetail groove of the contact wire about to be embedded in the busbar 3, and is uniformly coated by the oil brush 56, without affecting the quality of embedding the contact wire in the busbar 3. At the same time, the flow rate of the oil out of the injection nozzle 52 can be observed to manually adjust the throttle valve 677 on the oil injection pipe 66 to control the oil outflow, thereby realizing high-quality construction of the conductive grease coating in the process of erecting the contact wire. When the track operation vehicle 11 stops paying off or stops, the contact wire pay-off trolley 12 and the injection and coating suspension trolley 2 stop moving at the same time. The electrical control cabinet 7 controls the hydraulic system to stop pressurizing, and the injection nozzle 52 immediately stops discharging oil, thereby avoiding waste of the conductive grease.

[0041] When the conductive grease is supplemented and added, the electrical control cabinet 7 controls the motor 61 to start, the 2DT of the electromagnetic reversing valve 676 is electrified, the oil pump 62 sucks oil from the hydraulic oil tank 63 through the oil suction filter 671, the one-way valve 672, the right position of the electromagnetic reversing valve 676 and the right position of the superimposed throttle valve 677 to enter the cavity of the hydraulic oil cylinder 64B to push the hydraulic oil cylinder 64 to return, the A cavity hydraulic oil passes through the left position of the superimposed throttle valve 677 and the right position of the electromagnetic reversing valve 676 to the hydraulic oil tank 63, and the hydraulic rod returns. After returning, the oil storage tank 65 is opened to add the conductive grease.

[0042] The hydraulic control system integrated device automatically saves energy. The pressure transmitter 673 signal is collected, the working pressure range of the pressure material is set to 12Mpa-15Mpa in the electrical control cabinet 7, the accumulator 675 stores pressure oil during work, the motor 61 stops working when the pressure reaches the set upper limit of the pressure, the accumulator 675 provides pressure oil to drive the hydraulic oil tank 63 to work, and the motor 61 starts again to continue storing energy to the accumulator 675 when the work is less than the set lower limit of the pressure. The motor 61 stops working when the stored pressure oil reaches the upper limit of the pressure. Thus, energy is saved, and the motor 61 is prevented from working for a long time to heat and adversely affect the long-term stable operation of the equipment.

Claims

1. An automatic grease application device for rigid contact wires, characterized in that, The system includes a moving component, a coating suspension trolley, a hydraulic device, and an electrical control cabinet. The moving component drives the coating suspension trolley to move along the busbar direction. The moving component includes a wire-feeding trolley, and the coating suspension trolley is placed on the forward side of the wire-feeding trolley, with the wire-feeding trolley pushing against the coating suspension trolley as it moves. The coating suspension trolley includes a frame assembly and a coating assembly. The frame assembly includes a pair of side plates fixedly connected by connectors and suspension wheels and guide rollers rotatably connected to the inner sides of the two side plates. The coating assembly is located in the middle of the frame assembly and includes a pressing mechanism and grease nozzles abutting against both sides of the contact wire. The moving component is equipped with the hydraulic device and the electrical control cabinet. The hydraulic device is connected to the grease nozzles via a grease injection pipe. The electrical control cabinet is connected to a travel encoder via a control cable. The travel encoder is mounted on the guide rollers, and the guide rollers abut against the encoder disk of the travel encoder. The travel encoder is used to collect the motion status of the coating suspension trolley and send a signal to the electrical control cabinet to start or stop conductive grease coating. The pressing mechanism includes a pressing plate and a tension spring. A hole is provided in the middle of the side plate. The front ends of a pair of pressing plates pass through the hole and are arranged in a V-shape between the two side plates. The rear ends of the pressing plates are hinged to the side plates, and the front ends of the two pressing plates are connected by the tension spring. The grease injection nozzle is installed on the inner front side of the top pressure plate. The nozzle has a tapered opening that matches the dovetail groove of the contact wire. The nozzle is pressed against both sides of the dovetail groove of the contact wire to ensure that the conductive grease is accurately injected and applied into the dovetail groove of the contact wire that will be embedded in the busbar. The angle between the nozzle and the center line of the injection suspension trolley is 60°, and the nozzle opening faces the direction of the contact wire.

2. The automatic grease injection device for rigid contact wires according to claim 1, characterized in that, The mobile component also includes a rail-operated vehicle, which is connected to the wire-laying trolley via a traction rope. The wire-laying trolley is suspended on the busbar.

3. The automatic grease injection device for rigid contact wires according to claim 2, characterized in that, The rear side of the side plate is inclined, and the inclination angle of the rear side of the side plate matches the inclination angle of the front end of the contact wire feeding trolley.

4. The automatic grease injection device for rigid contact wires according to claim 1, characterized in that, There are two sets of suspension wheels, which are arranged one in front of the other. The suspension wheels are located on the upper end of the convex edge of the busbar.

5. The automatic grease injection device for rigid contact wires according to claim 1, characterized in that, There are two sets of guide rollers, which are arranged one in front of the other. The guide rollers are connected between the two side plates by a through shaft. One guide roller is rotatably connected to each side of the through shaft. The guide rollers are located at the lower end of the convex edge of the busbar.

6. The automatic grease injection device for rigid contact wires according to claim 1, characterized in that, An oil brush is installed in the middle of the top pressure plate.

7. The automatic grease injection device for rigid contact wires according to claim 2, characterized in that, The hydraulic device includes a motor, an oil pump, a hydraulic oil tank, a hydraulic cylinder, an oil storage tank, and an oil injection pipe. The rail-mounted work vehicle is equipped with a power supply, which controls the motor to start through the electrical control cabinet. The motor drives the oil pump to draw oil from the hydraulic oil tank. The hydraulic oil tank is connected to the hydraulic cylinder through a pipeline, and the oil storage tank is connected to the oil injection nozzle through the oil injection pipe.

8. The automatic grease injection device for rigid contact wires according to claim 7, characterized in that, The pipeline connecting the hydraulic oil tank and the hydraulic cylinder is equipped with an oil suction filter, a one-way valve, a pressure transmitter, a pressure gauge, an accumulator, a solenoid directional valve, a throttle valve, and a relief valve. The hydraulic oil tank is equipped with a vent port and an air filter. The hydraulic oil tank is equipped with a level gauge.

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