Reversing mechanism of overhead line system working vehicle

Abstract

The utility model discloses a reversing mechanism of a contact network operating vehicle, which relates to the technical field of contact network operating vehicles and comprises an adjusting mechanism, the adjusting mechanism comprises an electromagnetic valve, a pneumatic cylinder, a pressure adjusting valve, a first connecting pipe and a second connecting pipe, and the electromagnetic valve is fixedly communicated with the pneumatic cylinder through the first connecting pipe. According to the utility model, through the arrangement of the pressure regulating valve, the air pressure of the pneumatic cylinder during each air inlet is regulated, and through the arrangement of the damping valve, the air ejection speed is regulated, so that the air pressure does not need to be discharged too fast, and the reversing action is slowed down; reversing impact force is weakened, so that rapid contraction and rapid extension of the pneumatic cylinder are avoided, impact force on the shifting fork is reduced, damage to the shifting fork is reduced, the replacement frequency of the reversing shifting fork is reduced in the same overhaul period, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of contact network operation vehicles, in particular to a contact network operation vehicle reversing mechanism. Background Art

[0002] The catenary work vehicle is primarily used for the installation, repair, and routine inspection and maintenance of urban light rail overhead catenary facilities. It also serves as traction power. It utilizes an electronic fuel injection engine and a matching hydro-mechanical transmission, offering high reliability, low noise, and ease of maintenance. Reversing is achieved via a cylinder connected to an internal reversing shaft. Adjusting the reversing shaft position causes the shift fork to engage the gears, achieving reversal.

[0003] In the existing technology, the overhead line operation vehicle needs to frequently perform reversing operations when performing skylight and section operations. During reversing, the air flow supplied by the air pump is large, which causes the shift fork to apply a large force to the gear when it shifts the gear. Frequent reversing can easily cause cracks in the shift fork, and when it is continued to be used, the shift fork will break directly. A broken shift fork causes the operation vehicle to stop suddenly in the section and be unable to return to the station and garage. This is extremely harmful to the railway, affecting the railway's driving order, operation quality and driving safety. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that a contact network operation vehicle needs to frequently perform reversing operations during skylight and section operations. During reversing, the air flow supplied by the air pump is large, so when the shift fork shifts the gear, a large force is applied to the gear. Frequent reversing can easily cause cracks in the shift fork, which can be directly broken when the shift fork is used again. A broken shift fork causes the operation vehicle to suddenly stop in the section and be unable to return to the station and garage. This is extremely harmful to the railway and affects the railway's driving order, operation quality and driving safety. A reversing mechanism for a contact network operation vehicle is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a reversing mechanism of a contact network operation vehicle, including an adjusting mechanism, the adjusting mechanism including a solenoid valve, a pneumatic cylinder, a pressure regulating valve, a No. 1 connecting pipe and a No. 2 connecting pipe, the solenoid valve and the pneumatic cylinder are fixedly connected through the No. 1 connecting pipe, the air inlet of the solenoid valve and the pressure regulating valve are fixedly connected through the No. 2 connecting pipe, the exhaust port of the solenoid valve is installed with a damping valve, the output end of the pneumatic cylinder is fixedly connected to the No. 1 connecting ear, the No. 1 connecting ear is used to connect the reversing shaft, and the other end of the pressure regulating valve is fixedly connected to the main air intake pipe.

[0006] Preferably, a mounting mechanism is provided on one side of the pressure regulating valve, and the mounting mechanism includes a mounting plate and a second connecting ear, and the second connecting ear is fixedly connected to the upper and lower middle parts of both sides of the pressure regulating valve.

[0007] Preferably, the two upper corners of one side of the mounting plate are fixedly connected to a No. 1 threaded rod, and the two lower corners of one side of the mounting plate are fixedly connected to a No. 2 threaded rod.

[0008] Preferably, the No. 1 threaded rod and the No. 2 threaded rod are both slidably connected to the No. 2 connecting ear.

[0009] Preferably, nuts are provided on both sides of the No. 2 connecting ear, and the nuts are threadedly connected to the No. 1 threaded rod and the No. 2 threaded rod.

[0010] Preferably, a mounting hole is provided inside the mounting plate.

[0011] Preferably, the outer side of the No. 1 threaded rod is sleeved with a No. 1 sliding sleeve, the outer side of the No. 2 threaded rod is sleeved with a No. 2 sliding sleeve, the outer surfaces of the No. 2 sliding sleeve and the No. 1 sliding sleeve are both rotatably connected with a No. 3 threaded rod, and a threaded sleeve is threadedly connected between the two No. 3 threaded rods.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are:

[0013] 1. In the utility model, the air pressure of the pneumatic cylinder is adjusted each time the air is taken in by the setting of the pressure regulating valve, and the speed of gas ejection is adjusted by the setting of the damping valve, so that the wind pressure is not discharged too quickly, the reversing action is slowed down, and the impact force of the reversing is weakened, thereby avoiding the rapid contraction and rapid extension of the pneumatic cylinder, thereby reducing the impact force on the fork and reducing the damage to the fork. Within the same maintenance cycle, the number of replacement times of the reversing fork is reduced, saving costs.

[0014] 2. In the utility model, by setting the No. 1 threaded rod and the nut, the position of the nut is adjusted according to the size of the internal space after the pressure regulating valve is installed, so that the mounting plate can contact the side wall inside the contact network operation vehicle, and the bolt is used to pass through the mounting hole to fix the mounting plate. In this way, it can be suitable for installation in different spaces, ensuring the stability of the pressure regulating valve, and reducing the impact of the pressure regulating valve on the pipes at both ends when the contact network operation vehicle is working, avoiding damage to the connection and increasing the service life. By setting the No. 1 sliding sleeve, No. 2 sliding sleeve, No. 3 threaded rod and threaded sleeve, after the mounting plate is installed, by rotating the threaded sleeve, the No. 1 sliding sleeve squeezes the mounting plate, and the No. 2 threaded rod squeezes the nut, so that a triangular structure is formed between the No. 1 threaded rod and the No. 2 threaded rod, thereby ensuring the supporting strength and increasing the stability of use. In addition, this method has low cost and is more convenient to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a schematic diagram of the three-dimensional structure of a reversing mechanism of a contact network operation vehicle;

[0016] Figure 2The utility model proposes an exploded view of an installation mechanism in a reversing mechanism of a contact network operation vehicle;

[0017] Figure 3 The utility model provides a side view of a mounting plate in a reversing mechanism of a contact network operation vehicle.

[0018] Legend:

[0019] 1. Adjustment mechanism; 11. Solenoid valve; 12. Pneumatic cylinder; 13. Connecting lug No. 1; 14. Pressure regulating valve; 15. Damping valve; 16. Connecting pipe No. 1; 17. Connecting pipe No. 2;

[0020] 2. Mounting mechanism; 21. Mounting plate; 22. Connecting ear No. 2; 23. Threaded rod No. 1; 24. Threaded rod No. 2; 25. Nut; 26. Sleeve No. 1; 27. Sleeve No. 2; 28. Threaded rod No. 3; 29. ​​Threaded sleeve; 210. Mounting hole. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: Figure 1 As shown, the utility model provides a reversing mechanism for a contact network operation vehicle, including an adjusting mechanism 1, the adjusting mechanism 1 includes a solenoid valve 11, a pneumatic cylinder 12, a pressure regulating valve 14, a No. 1 connecting pipe 16 and a No. 2 connecting pipe 17, the solenoid valve 11 and the pneumatic cylinder 12 are fixedly connected via the No. 1 connecting pipe 16, the air inlet of the solenoid valve 11 and the pressure regulating valve 14 are fixedly connected via the No. 2 connecting pipe 17, the exhaust port of the solenoid valve 11 is installed with a damping valve 15, the output end of the pneumatic cylinder 12 is fixedly connected to the No. 1 connecting ear 13, the No. 1 connecting ear 13 is used to connect the reversing shaft, and the other end of the pressure regulating valve 14 is fixedly connected to the main air intake pipe.

[0024] The following is a detailed description of the specific settings and functions of this embodiment. By setting the pressure-regulating valve 14, the air pressure of the pneumatic cylinder 12 is adjusted each time the air is taken in. By setting the damping valve 15, the speed of gas ejection is adjusted to prevent the wind pressure from being discharged too quickly, slowing down the reversing action and weakening the impact force of the reversing, thereby avoiding the rapid contraction and extension of the pneumatic cylinder 12, thereby reducing the impact force on the fork and reducing the damage to the fork. Within the same maintenance cycle, the number of replacement times of the reversing fork is reduced, saving costs.

[0025] Example 2: Figure 1 - Figure 3 As shown, a mounting mechanism 2 is provided on one side of the pressure regulating valve 14, and the mounting mechanism 2 includes a mounting plate 21 and a second connecting ear 22. The second connecting ear 22 is fixedly connected to the upper and lower middle parts of both sides of the pressure regulating valve 14. The two corners of the upper end of one side of the mounting plate 21 are fixedly connected to a first threaded rod 23, and the two corners of the lower end of one side of the mounting plate 21 are fixedly connected to a second threaded rod 24. The first threaded rod 23 and the second threaded rod 24 are both slidably connected to the second connecting ear 22. Both sides of the second connecting ear 22 are provided with A nut 25 is provided, which is threadedly connected to the No. 1 threaded rod 23 and the No. 2 threaded rod 24. A mounting hole 210 is provided inside the mounting plate 21. The outer side of the No. 1 threaded rod 23 is sleeved with a No. 1 sliding sleeve 26, and the outer side of the No. 2 threaded rod 24 is sleeved with a No. 2 sliding sleeve 27. The outer surfaces of the No. 2 sliding sleeve 27 and the No. 1 sliding sleeve 26 are both rotatably connected with a No. 3 threaded rod 28. A threaded sleeve 29 is threadedly connected between the two No. 3 threaded rods 28, and the threads on both sides of the middle part of the threaded sleeve 29 are rotated in opposite directions.

[0026] The effect achieved by the entire embodiment is that, through the setting of the No. 1 threaded rod 23 and the nut 25, the position of the nut 25 is adjusted according to the size of the internal space after the pressure regulating valve 14 is installed, so that the mounting plate 21 can contact the side wall inside the contact network operation vehicle, and the bolt is used to pass through the mounting hole 210 to fix the mounting plate 21. In this way, it can be suitable for installation in different spaces, ensuring the stability of the pressure regulating valve 14, and reducing the impact of the pressure regulating valve 14 on the pipes at both ends when the contact network operation vehicle is working, avoiding damage to the connection and increasing the service life. Through the setting of the No. 1 sliding sleeve 26, the No. 2 sliding sleeve 27, the No. 3 threaded rod 28 and the threaded sleeve 29, after the mounting plate 21 is installed, by rotating the threaded sleeve 29, the No. 1 sliding sleeve 26 squeezes the mounting plate 21, and the No. 2 threaded rod 24 squeezes the nut 25, so that a triangular structure is formed between the No. 1 threaded rod 23 and the No. 2 threaded rod 24, ensuring the support strength, thereby increasing the stability of use, and this method has low cost and is more convenient to install.

[0027] The use method and working principle of this device: When installing the pressure regulating valve 14, according to the size of the installation space, if the space is large, rotate the threaded sleeve 29 so that the ends of the two No. 3 threaded rods 28 touch each other, that is, the shortest state, and then put the No. 1 sliding sleeve 26 on the top and bottom of the No. 1 threaded rod 23, and the No. 2 sliding sleeve 27 on the No. 2 threaded rod 24. If the space is small, there is no need to install the No. 1 sliding sleeve 26 and the No. 2 sliding sleeve 27. Put the nut 25 on the No. 1 threaded rod 23 and the No. 2 threaded rod 24, then insert the No. 1 threaded rod 23 and the No. 2 threaded rod 24 into the No. 2 connecting ear 22, connect one end of the pressure regulating valve 14 to the main intake pipe, and the other end to the No. 2 connecting pipe 17, then turn the nut 25 until the nut 25 contacts one side of the No. 2 connecting ear 22, and then use the nut 25 to connect the No. 1 threaded rod 23 and the No. 2 threaded rod 24 until it contacts the other end of the No. 2 connecting ear 22, and then select the nut 25 to connect the pressure regulating valve 14. The position is limited to the No. 1 threaded rod 23 and the No. 2 threaded rod 24. Bolts are used to pass through the mounting holes 210 to fix the mounting plate 21 to the contact network operation vehicle. The threaded sleeve 29 is rotated, and the No. 1 sliding sleeve 26 and the No. 2 sliding sleeve 27 are moved until the No. 1 sliding sleeve 26 squeezes the mounting plate 21 and the No. 2 sliding sleeve 27 squeezes the No. 2 threaded rod 24. In this way, the installation of the pressure regulating valve 14 is completed. Subsequently, the solenoid valve 11 and the pneumatic cylinder 12 are installed in the contact network operation vehicle, and the No. 1 connecting ear 13 is connected to the reversing shaft. When reversing is required, the solenoid valve 11 controls the flow of air in the pneumatic cylinder 12, controls the pneumatic cylinder 12 to extend or retract, and causes the shift fork on the reversing shaft to shift the gear for reversing. The pressure regulating valve 14 adjusts the intake pressure. The damping valve 15 is a porous metal part that slows down the exhaust speed. During use, the shift fork is also inspected when the axle coupler is inspected every year, and the shift fork with cracks is replaced to avoid breakage during subsequent operation.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A reversing mechanism for a contact network operation vehicle, characterized in that: The invention comprises a regulating mechanism (1), wherein the regulating mechanism (1) comprises a solenoid valve (11), a pneumatic cylinder (12), a pressure regulating valve (14), a first connecting pipe (16) and a second connecting pipe (17), wherein the solenoid valve (11) and the pneumatic cylinder (12) are fixedly connected via the first connecting pipe (16), the air inlet of the solenoid valve (11) and the pressure regulating valve (14) are fixedly connected via the second connecting pipe (17), the exhaust port of the solenoid valve (11) is provided with a damping valve (15), the output end of the pneumatic cylinder (12) is fixedly connected to a first connecting ear (13), the first connecting ear (13) is used to connect to a reversing shaft, and the other end of the pressure regulating valve (14) is fixedly connected to a main air inlet pipe.

2. The contact network operation vehicle reversing mechanism according to claim 1, characterized in that: A mounting mechanism (2) is provided on one side of the pressure regulating valve (14), and the mounting mechanism (2) comprises a mounting plate (21) and a second connecting ear (22), and the second connecting ear (22) is fixedly connected to the upper and lower middle portions of both sides of the pressure regulating valve (14).

3. The contact network operation vehicle reversing mechanism according to claim 2, characterized in that: Two corners at the upper end of one side of the mounting plate (21) are fixedly connected to a No. 1 threaded rod (23), and two corners at the lower end of one side of the mounting plate (21) are fixedly connected to a No. 2 threaded rod (24).

4. The contact network operation vehicle reversing mechanism according to claim 3, characterized in that: The No. 1 threaded rod (23) and the No. 2 threaded rod (24) are both slidably connected to the No. 2 connecting ear (22).

5. The contact network operation vehicle reversing mechanism according to claim 4, characterized in that: Nuts (25) are provided on both sides of the No. 2 connecting ear (22), and the nuts (25) are threadedly connected to the No. 1 threaded rod (23) and the No. 2 threaded rod (24).

6. The contact network operation vehicle reversing mechanism according to claim 5, characterized in that: A mounting hole (210) is provided inside the mounting plate (21).

7. The contact network operation vehicle reversing mechanism according to claim 6, characterized in that: The outer side of the No. 1 threaded rod (23) is sleeved with a No. 1 sliding sleeve (26), the outer side of the No. 2 threaded rod (24) is sleeved with a No. 2 sliding sleeve (27), the outer surfaces of the No. 2 sliding sleeve (27) and the No. 1 sliding sleeve (26) are both rotatably connected to a No. 3 threaded rod (28), and a threaded sleeve (29) is threadedly connected between the two No. 3 threaded rods (28).

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