Railway locomotive pantograph unfreezing and anti-freezing device

Abstract

The utility model discloses a railway locomotive pantograph unfreezing and anti-freezing device which is arranged on a bottom frame, two air bags are symmetrically arranged on the bottom frame, the railway locomotive pantograph unfreezing and anti-freezing device comprises an air path system, the air path system comprises an air inlet connector and an air supply pipe, the air supply pipe is connected with a three-way valve, and the three-way valve is communicated with a first air path pipeline and a second air path pipeline. The first air path pipeline is used for inflating and deflating the two air bags through the shunting assembly; and the auxiliary pantograph lifting unit is arranged on the bottom frame, communicates with the second gas path pipeline, is driven and controlled, and is used for abutting against the upper frame. The problems that in the prior art, a frozen pantograph is difficult to rise, and the pantograph rising efficiency is low are solved, air paths are distributed through the three-way valve and distributed to the first air path pipeline and the second air path pipeline, and therefore inflation and deflation of the two air bags and driving control of the auxiliary pantograph rising assembly are provided; therefore, jacking and icebreaking of the auxiliary pantograph lifting assembly before the pantograph lifting system works are achieved, and normal pantograph lifting of the subsequent pantograph lifting system is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of railway machinery, in particular to a thawing and anti-freezing device for a pantograph of a railway locomotive. Background Technique

[0002] In low-temperature and cold weather, icing of the pantograph of a locomotive often occurs, resulting in the inability of the pantograph to be raised normally. Through a large number of on-site analyses, it can be known that there are roughly two reasons for the freezing of the pantograph: one is that when the locomotive runs in low-temperature weather, the windward surface of the current-collecting pantograph slide plate hits the cold air, resulting in a large amount of snow-like ice condensation on the windward surface of the pantograph slide plate. When the pantograph is lowered, due to the initial pantograph raising force of the locomotive being unable to overcome the gravity of the bow head after icing, it cannot be raised normally. The other is that in snowy weather, icing occurs between the pantograph stop and the upper frame cross beam in the lowered state of the pantograph, and the pantograph raising force is not sufficient to overcome the adhesion resistance, resulting in the inability to be raised normally.

[0003] In the above situation, a lot of work needs to be done to thaw the pantograph. The usual method is to pull the faulty locomotive to a non-network area (inside a warm shed), which is likely to cause the locomotive to be late for leaving the depot. In addition, it is also possible to use an insulating wooden rod to poke the pantograph bow head on the roof of the locomotive under the catenary. This method is ineffective because it is difficult to apply force, and there are safety hazards in working under the network, which is not conducive to the use of the locomotive and the personal safety of the workers. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is that it is difficult to raise the frozen pantograph and the pantograph raising efficiency is low. The purpose is to provide a thawing and anti-freezing device for a pantograph of a railway locomotive, which solves the problems of difficult pantograph raising and low pantograph raising efficiency existing in the prior art.

[0005] The utility model is realized through the following technical solutions:

[0006] A thawing and anti-freezing device for a pantograph of a railway locomotive is arranged on the underframe. Two air bags are symmetrically arranged on the underframe, including:

[0007] An air circuit system, the air circuit system includes an air inlet joint and an air supply pipe. A three-way valve is connected to the air supply pipe. The three-way valve is communicated with a first air circuit pipe and a second air circuit pipe. The first air circuit pipe is used for inflating and deflating the two air bags through a shunt component;

[0008] An auxiliary pantograph raising component, the auxiliary pantograph raising unit is arranged on the underframe and is communicated with and driven and controlled by the second air circuit pipe for abutting against the upper frame.

[0009] For further optimization, to ensure the normal supply of air to the air bags, it is set as follows: the shunt component is a shunt, and two air pipes for supplying air to the two air bags are arranged on the shunt. An air inlet pipe and an air release pipe are also arranged on the shunt. An air release valve and a test valve are arranged on the air release pipe.

[0010] For further optimization, a control valve is provided on the second air path pipeline, and airbag valves are provided on both gas transmission pipes.

[0011] For further optimization, the second air path pipeline is made of copper pipe, and the two gas transmission pipes are high-pressure flexible hoses.

[0012] For further optimization, the auxiliary pantograph lifting assembly includes a cylinder connected to the underframe and communicating with the second air path pipeline, and a resisting block is connected to the telescopic end of the cylinder.

[0013] For further avoiding hard contact between the upper frame and the resisting block, it is arranged that: the resisting block is provided with a rubber pad.

[0014] For further ensuring the stable installation of the cylinder, it is arranged that: the cylinder is fixedly installed on the underframe through a connecting assembly, the connecting assembly includes an upper connecting plate and a lower connecting plate, the upper connecting plate is threadedly connected with the cylinder, and the upper connecting plate and the lower connecting plate are bolted; the lower connecting plate and the underframe are connected and fixed through a loose nut.

[0015] For further improving the ice-breaking efficiency of the pantograph and enabling the original pantograph lifting system to lift the pantograph as soon as possible, it is arranged that: a cavity is formed in the resisting block and a sliding hole is formed at the top of the resisting block, and a vibration assembly for colliding with the upper frame by passing through the sliding hole is slidably arranged in the cavity.

[0016] For further optimization, the vibration assembly includes:

[0017] A positioning rod, the positioning rod is vertically arranged in the cavity;

[0018] A sliding plate, the sliding plate is slidably connected with the positioning rod; a spring sleeved on the positioning rod is arranged at the bottom of the sliding plate; both ends of the sliding plate extend out of the cavity and are connected with fixing parts;

[0019] An impact block, the impact block is arranged on the top of the sliding plate and is used for repeatedly colliding with the upper frame by passing through the sliding hole.

[0020] For further optimization, the fixing part includes support rods arranged on both sides of the cylinder, an elastic snap ring is connected to the top of the support rods, and a snap ball matched with the elastic snap ring is arranged at the bottom of the sliding plate.

[0021] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0022] 1. The air path is distributed through a three-way valve and distributed to the first air path pipeline and the second air path pipeline, so as to supply the inflation and deflation of the two airbags and the drive control of the auxiliary pantograph lifting assembly; thereby realizing the jacking and ice-breaking of the auxiliary pantograph lifting assembly before the pantograph lifting system works, and ensuring the normal pantograph lifting of the subsequent pantograph lifting system.

[0023] 2. The system has high security, strong practicability, is easy to install, and has no impact on the original functions of the locomotive. Description of the Drawings

[0024] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, form a part of this application, and do not limit the embodiments of the present invention. In the drawings:

[0025] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0026] Figure 2 is a schematic structural diagram of the vibration assembly of the present invention.

[0027] Markings in the drawings and corresponding component names:

[0028] 1 - Underframe, 2 - Airbag, 3 - Pneumatic system, 31 - Intake joint, 32 - Supply pipe, 33 - Three-way valve, 34 - Shunt, 341 - Inlet pipe, 342 - Delivery pipe, 35 - First pneumatic pipeline, 36 - Second pneumatic pipeline, 361 - Control valve, 4 - Auxiliary pantograph lifting assembly, 41 - Cylinder, 42 - Block, 421 - Rubber pad, 422 - Cavity, 423 - Slide hole, 5 - Vibration assembly, 51 - Positioning rod, 52 - Spring, 53 - Sliding plate, 54 - Impact block, 55 - Fixed part, 551 - Elastic snap ring, 552 - Support rod, 56 - Ball Detailed Embodiments

[0029] To make the objectives, technical solutions, and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the embodiments and the drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and do not limit the present invention.

[0030] This embodiment provides a thawing and anti-freezing device for the pantograph of a railway locomotive, which is arranged on the underframe 1. Two airbags 2 are symmetrically arranged on the underframe 1 and include:

[0031] A pneumatic system 3, the pneumatic system 3 includes an intake joint 31 and a supply pipe 32. A three-way valve 33 is connected to the supply pipe 32. The three-way valve 33 is connected to a first pneumatic pipeline 35 and a second pneumatic pipeline 36. The first pneumatic pipeline 35 is used to inflate and deflate the two airbags 2 through a shunt assembly;

[0032] An auxiliary pantograph lifting assembly 4, the auxiliary pantograph lifting unit is arranged on the underframe 1 and is connected to and driven by the second pneumatic pipeline 36 for abutting against the upper frame.

[0033] In the prior art, in order to defrost the pantograph, it is often necessary to tow the faulty locomotive into a warm shed, which is likely to cause the locomotive to be late for departure. In addition, it is also possible to use an insulating wooden pole to poke the pantograph head on the roof of the locomotive under the catenary. However, this method is ineffective due to lack of force, and there are safety hazards in the operation under the catenary, which is not conducive to the use of the locomotive and the personal safety of the workers.

[0034] To solve the above problems, an auxiliary pantograph lifting assembly 4 is provided in this embodiment, and the auxiliary pantograph lifting assembly 4 operates before the original pantograph lifting system works. It can be known that when the pantograph is lifted, after the solenoid valve is energized, compressed air enters the airbag 2 and the quick exhaust valve of the pantograph lifting device through the air circuit device, and the airbag 2 continuously expands and lifts to complete the pantograph lifting action. At the same time, after passing through the pressure stabilizing valve, the compressed air is supplied to the pantograph carbon slide with an air chamber through the quick exhaust valve (ADD) to form an automatic lowering protection air circuit. When the pantograph is normally lowered, the electric control valve is de-energized, the valve cavity is directly communicated with the atmosphere, the valve port of the lower chamber of the quick exhaust valve acts, and the compressed air in the pantograph lifting air circuit is quickly discharged, and the pantograph completes the lowering action by its own weight.

[0035] In this embodiment, the model of the pantograph is TSG15B pantograph, and the auxiliary pantograph lifting assembly 4 is arranged on the underframe 1, communicated with and driven by the second air pipeline 36 on the three-way valve 33.

[0036] Specifically, the auxiliary pantograph lifting assembly 4 works before the original pantograph lifting system lifts the pantograph. By jacking up the upper frame, the ice on the pantograph is broken, and the problem of difficult pantograph lifting caused by adhesion between parts on the pantograph is overcome. Then, the pantograph lifting system is started for normal pantograph lifting operation.

[0037] Furthermore, the auxiliary pantograph lifting assembly 4 includes a cylinder 41 connected to the underframe 1 and communicated with the second air pipeline 36, and a contact block 42 is connected to the telescopic end of the cylinder 41.

[0038] Among them, a control valve 361 is arranged on the second air pipeline 36, and airbag valves are arranged on both air pipelines 342. Specifically, the control valve 361 can be manually opened according to environmental needs. The air source enters from the air inlet joint 31, passes through the three-way valve 33 on the air supply pipe 32, and the system uses the original air circuit to convey it to the auxiliary pantograph lifting assembly 4 through the second air pipeline 36. The assembly starts to work under the action of air flow at the same time, giving the pantograph head a jacking force and completing the jacking and ice breaking within a few seconds before the pantograph is lifted. The working air pressure of the system is generally between 0.4 and 0.6 MPa.

[0039] Furthermore, the second air pipeline 36 is made of copper pipe, and the two air pipelines 342 are high-pressure hoses. Copper pipes with an outer diameter of 8 mm and a wall thickness of 1 mm are also used as pipelines on the pantograph frame, and a new pipe clamp is added to fix the air supply copper pipe, so as to ensure the airtightness during the air supply process.

[0040] Further, to avoid hard contact between the upper frame and the abutting block 42, it is arranged that: a rubber pad 421 is provided on the abutting block 42. Specifically, the rubber pad 421 has a certain elasticity and plays a buffering role. In addition, the rubber pad 421 can increase the frictional force between the abutting block 42 and the upper frame, thereby ensuring safe and effective contact. In addition, to ensure the stable installation of the air cylinder 41, it is arranged that: the air cylinder 41 is fixedly installed on the chassis 1 through a connecting component, and the connecting component includes an upper connecting plate and a lower connecting plate. The upper connecting plate is threadedly connected to the air cylinder 41, and the upper connecting plate and the lower connecting plate are bolted together; the lower connecting plate is fixedly connected to the chassis 1 through a loose nut.

[0041] To ensure the normal supply of air to the airbag 2, it is arranged that: the shunt component is a shunt 34, and two air pipes 342 for supplying air to the two airbags 2 are provided on the shunt 34. An air inlet pipe 341 and an air release pipe are also provided on the shunt 34, and an air release valve and an experimental valve are provided on the air release pipe. Thus, the shunt 34 distributes the air flow to the two airbags 2.

[0042] According to another embodiment of the present invention, in order to improve the ice-breaking efficiency of the pantograph and enable the original bow-raising system to raise the bow as soon as possible, a cavity 422 is formed in the abutting block 42 and a sliding hole 423 is formed at the top of the abutting block 42. A vibration component 5 that passes through the sliding hole 423 and is used to collide with the upper frame is slidably arranged in the cavity 422. Specifically, the vibration component 5 colliding with the upper frame can further break the adhesion and shake off the ice and snow blocks on the pantograph.

[0043] Among them, as Figure 2 shown, the vibration component 5 includes:

[0044] A positioning rod 51, the positioning rod 51 is vertically arranged in the cavity 422;

[0045] A sliding plate 53, the sliding plate 53 is slidably connected to the positioning rod 51; a spring 52 sleeved on the positioning rod 51 is arranged at the bottom of the sliding plate 53; both ends of the sliding plate 53 extend out of the cavity 422 and are connected with fixing parts 55;

[0046] An impact block 54, the impact block 54 is arranged on the top of the sliding plate 53 and is used to repeatedly collide with the upper frame through the sliding hole 423.

[0047] In this embodiment, two impact blocks 54 are provided, the sliding plate 53 slides in the cavity 422, and the positioning rod 51 is used to ensure the stable sliding of the sliding plate 53. In addition, multiple springs 52 can be provided as needed. In addition to being sleeved on the positioning rod 51, they can also be only located between the sliding plate 53 and the bottom of the cavity 422; specifically, the working process of the vibration component 5 is as follows:

[0048] In the initial state, the fixing member 55 fixes the sliding plate 53, the spring 52 supports the sliding plate 53, and the sliding plate 53 slightly compresses the spring 52; when the cylinder 41 is extended, the sliding plate 53 is in a static state due to the restriction of the fixing member 55, and the spring 52 is compressed at this time. When the spring 52 is compressed to a certain extent, the fixing member 55 is released, and the cylinder 41 is extended to a certain extent and abuts against the upper frame. After the sliding plate 53 is not restricted by the fixing member 55, the spring 52 generates elastic force on the sliding plate 53. Under the limit of the positioning rod 51, the sliding plate 53 moves up and down smoothly to ensure that the impact block 54 can just extend out of the sliding hole 423 for collision. The sliding plate 53 rebounds repeatedly under the action of the spring 52, and then drives the impact block 54 to pass through the sliding hole 423 and continuously hit the upper frame to generate vibration. In addition, the setting of the rubber pad 421 fits the upper surface of the abutment block 42 and does not block the sliding hole. In addition, the thickness of the rubber pad 421 is not enough to affect the extension of the impact block 54.

[0049] The spring 52 finally becomes calm, at which time the impact block 54 retracts into the cavity 422, and the cylinder 41 descends without affecting the subsequent pantograph raising and lowering operations.

[0050] Furthermore, the fixing member 55 includes support rods 552 arranged on both sides of the cylinder 41, the top of the support rods 552 is connected with an elastic clamping ring 551, and the bottom of the sliding plate 53 is provided with a clamping ball 56 that cooperates with the elastic clamping ring.

[0051] The two elastic snap rings 551 are respectively connected with the snap balls 56 on the sliding plate 53 in a one-to-one manner, which limit the sliding plate 53 and ensure that the cylinder 41 rises. The spring 52 can be compressed and stored to finally generate vibration.

[0052] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A railway locomotive pantograph thawing and antifreezing device, which is arranged on a chassis, and two air bags are symmetrically arranged on the chassis, characterized in that: include: An air circuit system, the air circuit system comprising an air inlet joint and an air supply pipe, the air supply pipe is connected to a three-way valve, the three-way valve is connected to a first air circuit pipeline and a second air circuit pipeline, the first air circuit pipeline is used to inflate and deflate the two air bags through a diverter assembly; The auxiliary bow lifting assembly is arranged on the base frame and is connected to the second air pipeline and driven and controlled, and is used to abut against the upper frame.

2. The railway locomotive pantograph thawing and antifreezing device according to claim 1, characterized in that: The flow diverter assembly is a flow diverter, on which are arranged two air supply pipes for supplying air to the two air bags respectively, an air inlet pipe and an air release pipe, on which are arranged an air release valve and an experimental valve.

3. The railway locomotive pantograph thawing and antifreezing device according to claim 2, characterized in that: The second gas pipeline is provided with a control valve, and both gas pipelines are provided with air bag valves.

4. The railway locomotive pantograph thawing and antifreezing device according to claim 2, characterized in that: The second gas pipeline is a copper pipe, and the two gas pipes are high-pressure hoses.

5. The railway locomotive pantograph thawing and antifreezing device according to claim 1, characterized in that: The auxiliary bow lifting assembly includes a cylinder connected to the base frame and communicated with the second air pipeline, and a stop block is connected to the telescopic end of the cylinder.

6. The railway locomotive pantograph thawing and antifreezing device according to claim 5, characterized in that: The cylinder is fixedly mounted on the base frame through a connecting assembly, and the connecting assembly includes an upper connecting plate and a lower connecting plate, the upper connecting plate is threadedly connected to the cylinder, and the upper connecting plate and the lower connecting plate are bolted; the lower connecting plate is fixedly connected to the base frame by loosening nuts.

7. The railway locomotive pantograph thawing and antifreezing device according to claim 5, characterized in that: The stop block is provided with a rubber pad.

8. The railway locomotive pantograph thawing and antifreezing device according to claim 5, characterized in that: A cavity is provided in the stop block and a sliding hole is provided on the top of the stop block. A vibration component is slidably arranged in the cavity and passes through the sliding hole and is used to collide with the upper frame.

9. The railway locomotive pantograph thawing and antifreezing device according to claim 8, characterized in that: The vibration assembly comprises: A positioning rod, the positioning rod is vertically arranged in the cavity; A sliding plate, wherein the sliding plate is slidably connected to the positioning rod; a spring sleeved on the positioning rod is provided at the bottom of the sliding plate; both ends of the sliding plate extend out of the cavity and are connected to fixing parts; The impact block is arranged on the top of the sliding plate and is used for passing through the sliding hole to repeatedly collide with the upper frame.

10. The railway locomotive pantograph thawing and antifreezing device according to claim 9, characterized in that: The fixing member comprises support rods arranged on both sides of the cylinder, the top of the support rods is connected with an elastic clamping ring, and the bottom of the sliding plate is provided with a clamping ball matched with the elastic clamping ring.

Images