Trolley battery hybrid electric locomotive

Abstract

The application belongs to the technical field of electric traction motor car, and particularly discloses a catenary-battery hybrid electric traction motor car, which comprises a motor car body, a supporting device is installed on the top of the motor car body, a battery is arranged on the top of the supporting device, a fixing device is arranged on the top of the battery and used for compressing and fixing the battery, and a pantograph is installed on the top of the fixing device; the supporting device comprises a sleeper, a supporting plate, a U-shaped supporting plate, a supporting roller and a buffer assembly. When the motor car body in the application runs on a road section where explosives are buried in a mine, the battery can be immediately started to supply power alone, thereby solving the power supply problem of the specific road section in the mine and improving the work efficiency. Meanwhile, the battery can be used to supply power to the generator in cooperation with the power grid line, thereby improving the work efficiency.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electric traction motor vehicles, and particularly relates to a catenary-battery hybrid electric traction motor vehicle. BACKGROUND

[0002] The electric traction motor vehicle is a track transportation equipment taking electric energy as a core power source, converting electric energy into mechanical energy through a traction motor to drive wheels to run, and is widely applied to scenes such as railway trunk lines and industrial and mining enterprises, and is one of the core equipment for realizing low-carbon, high-efficiency and large-traction-force transportation in the modern rail transportation system.

[0003] When the electric traction motor vehicle is applied to a mine, since the electric traction motor vehicle mainly obtains electric energy by docking with a power grid line through a pantograph at the top of the electric traction motor vehicle, and some specific sections under the mine may be buried with explosives, therefore, in the process of running of the electric traction motor vehicle, the pantograph at the top of the electric traction motor vehicle and the power grid line may generate electric sparks due to friction, thereby possibly causing a fire explosion.

[0004] Therefore, it is necessary to invent a catenary-battery hybrid electric traction motor vehicle to solve the above problems. SUMMARY

[0005] In view of the above problems, the application provides a catenary-battery hybrid electric traction motor vehicle to solve the problems in the background.

[0006] To achieve the above purpose, the application provides the following technical scheme: a catenary-battery hybrid electric traction motor vehicle, comprising an electric vehicle body, a support device is installed on the top of the electric vehicle body, a battery is arranged on the top of the support device, a fixing device is arranged on the top of the battery to compress and fix the battery, and a pantograph is arranged on the top of the fixing device.

[0007] The support device comprises sleepers, a support plate, a U-shaped supporting plate, support rollers and a buffer assembly, the sleepers are arranged on the top of the electric vehicle body in a plurality, the support plate is horizontally arranged on the top of the sleepers, the support plate is fixedly connected with the sleepers through fixing ears arranged on the front and back sides of the support plate and opposite to the sleepers, the fixing ears and the sleepers are fixedly connected with the top of the electric vehicle through bolts, the U-shaped supporting plate is horizontally arranged on the top of the support plate, the U-shaped supporting plate is provided with an installation groove at the bottom thereof, the support rollers are arranged in the installation groove in a plurality, the two ends of the support rollers are rotatably connected with the inner walls of the front and back sides of the installation groove, and the bottom of the support rollers is attached to the top of the support plate, and the buffer assembly is arranged between the U-shaped supporting plate and the top of the support plate in a plurality and symmetrically.

[0008] Further, the buffer assembly comprises a telescopic rod, a buffer spring and a fixing block, the opening of the U-shaped supporting plate faces upward, the two sides of the U-shaped supporting plate protrude upward, the battery is placed on the top of the U-shaped supporting plate, the length of the battery matches the distance between the two inner walls of the two sides of the U-shaped supporting plate, the telescopic rod is fixedly connected to the side of the U-shaped supporting plate horizontally and vertically, the fixing block is fixedly connected to the end of the telescopic rod away from the U-shaped supporting plate, and the bottom of the fixing block is fixedly connected to the top of the supporting plate, the buffer spring is sleeved on the telescopic rod, and the two ends of the buffer spring are fixedly connected to the positions close to the two ends of the telescopic rod.

[0009] Further, the fixing device comprises a top plate, a U-shaped pressing plate, a U-shaped clamp, a pressing roller and a pressing assembly, the top plate is pressed on the top of the battery horizontally, the U-shaped pressing plate is located on the top of the top plate, the opening of the U-shaped pressing plate faces downward, the two sides of the U-shaped pressing plate protrude downward, and the distance between the two inner walls of the two sides of the U-shaped pressing plate matches the length of the battery, the U-shaped clamp is clamped at the middle position of the U-shaped pressing plate, and the pantograph is installed on the top of the U-shaped clamp, the opening of the U-shaped clamp faces downward, and the front end and the rear end of the bottom of the U-shaped clamp are connected together with the top of the body of the electric locomotive through fixing screws, a groove is formed in the top inner wall of the U-shaped clamp, the number of the pressing rollers is plural, the plural pressing rollers are arranged in the groove uniformly, and the two ends of the pressing roller are rotationally connected with the front and rear inner walls of the groove, the bottom of the pressing roller is attached to the top of the U-shaped pressing plate, and the number of the pressing assemblies is plural, and the plural pressing assemblies are connected between the top plate and the U-shaped pressing plate.

[0010] Further, the pressing assembly comprises a limiting rod and a pressing spring, the limiting rod is fixedly connected to the top of the top plate vertically, the position opposite to the limiting rod of the U-shaped pressing plate protrudes upward, the top end of the limiting rod is vertically and slidingly inserted into the upward protruding part of the U-shaped pressing plate, the pressing spring is sleeved on the limiting rod, and the two ends of the pressing spring are fixedly connected with the top of the top plate and the bottom of the upward protruding part of the U-shaped pressing plate.

[0011] Further, the top of the top plate and the top of the U-shaped supporting plate are fixedly connected with a plurality of heat dissipation strips in parallel, the heat dissipation strips on the top of the top plate are always not in contact with the bottom of the U-shaped pressing plate, the length direction of the heat dissipation strip is parallel to the front side of the body of the electric locomotive, the heat dissipation strip is a hollow metal structure, and the heat dissipation strip is filled with cooling liquid.

[0012] Further, the two sides of the U-shaped pressing plate and the two sides of the U-shaped supporting plate are provided with strip-shaped air inlet holes, and the length of the air inlet hole matches the width of the area where the heat dissipation strip is located.

[0013] Further, the top edge of the air inlet hole on the side of the front moving direction of the body of the electric locomotive is fixedly connected with a flow guide strip matching the length of the air inlet hole, and the side away from the air inlet hole of the flow guide strip is inclined upward.

[0014] Further, in the initial state, the telescopic rod is in a half-extended state, and the buffer spring is in a fully extended state.

[0015] Further, the top of the storage battery is provided with two terminal posts, the outer portions of the two terminal posts are detachably sleeved with drying boxes, dry agents are placed in the drying boxes, and a plug hole is formed through the position opposite to the drying boxes on the top plate, and the drying boxes are plugged into the plug hole.

[0016] Technical effects and advantages of the present application:

[0017] 1. When the electric locomotive body in the application is running in the road section where explosives are buried in the mine, the storage battery can be immediately started to supply power alone, solving the existing power supply problem of specific road sections in the mine, improving the work efficiency, and the remaining normal road sections can freely and flexibly choose to use power grid line power supply or storage battery power supply, and the storage battery can also cooperate with the power grid line to supply power to the generator, improving the work efficiency.

[0018] 2. The buffer assembly is provided, and with the acceleration or deceleration of the electric locomotive body, the U-shaped supporting plate and the U-shaped pressing plate can be driven to move under the action of the inertia of the storage battery, the telescopic rod and the buffer spring in the forward direction of the U-shaped supporting plate can be compressed, and the remaining telescopic rods and buffer springs can be stretched, and with the compression or stretching of the buffer spring, the kinetic energy of the storage battery and the U-shaped supporting plate can be gradually converted into the elastic potential energy of the buffer spring, thereby reducing the influence of the acceleration or deceleration of the electric locomotive body on the storage battery, and protecting the internal pole plate and the baffle plate of the storage battery from loosening and deforming due to the impact of the electrolyte.

[0019] 3. The U-shaped pressing plate is provided, when the stones and sundries at the top of the mine fall, the U-shaped pressing plate can protect the storage battery, thereby avoiding the collision of the stones and sundries with the storage battery, and protecting the safety of the storage battery.

[0020] 4. The heat dissipation strip is provided, when the storage battery generates heat, part of the heat generated by the storage battery is transmitted to the heat dissipation strip at the top of the top plate, and when the heat generated by the storage battery is transmitted to the heat dissipation strip, the cooling liquid in the heat dissipation strip can quickly absorb the heat generated by the storage battery, thereby improving the heat dissipation efficiency of the storage battery, and ensuring the stability of the temperature of the storage battery station and the charging temperature. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the overall structure schematic diagram of the present application;

[0022] Figure 2 is the three-dimensional schematic diagram of the storage battery, the supporting device and the fixing device in the present application;

[0023] Figure 3 It is the three-dimensional schematic view of the top plate, the limiting rod, the compression spring and the heat dissipation strip in the application.

[0024] Figure 4 It is the three-dimensional schematic view of the support device in the application.

[0025] Figure 5 It is the three-dimensional schematic view of the U-shaped supporting plate, the supporting roller and the flow guide strip in the application.

[0026] Figure 6 It is the three-dimensional schematic view of the U-shaped clamp and the compression roller in the application.

[0027] Figure 7 It is the three-dimensional schematic view of the battery, the terminal post and the drying box in the application.

[0028] In the figure: 1, the electric locomotive body; 2, the battery; 3, the pantograph; 4, the sleeper; 5, the support plate; 6, the U-shaped supporting plate; 7, the supporting roller; 8, the fixing lug; 9, the bolt; 10, the telescopic rod; 11, the buffer spring; 12, the fixed block; 13, the top plate; 14, the U-shaped pressing plate; 15, the U-shaped clamp; 16, the compression roller; 17, the fixing screw; 18, the limiting rod; 19, the compression spring; 20, the heat dissipation strip; 21, the air inlet hole; 22, the flow guide strip; 23, the terminal post; 24, the drying box. DETAILED DESCRIPTION

[0029] In order to make the purpose, the technical scheme and the advantages of the embodiments of the application more clear, the technical scheme of the application will be described clearly and completely below in combination with the embodiments.

[0030] The application provides a wire-mounted battery hybrid electric power traction electric locomotive as shown in the figure. Figures 1 to 7 The application provides a wire-mounted battery hybrid electric power traction electric locomotive as shown in the figure.

[0031] The support device comprises sleepers 4, a support plate 5, a U-shaped supporting plate 6, support rollers 7 and buffer assemblies, the sleepers 4 are arranged on the top of the motor trolley body 1, the support plate 5 is arranged horizontally on the top of the sleepers 4, the support plate 5 is fixedly connected with the sleepers 4 at positions opposite to each other, the sleepers 4 and the support plate 5 are fixedly connected with the top of the motor trolley body 1 by bolts 9, the U-shaped supporting plate 6 is arranged horizontally on the top of the support plate 5, the U-shaped supporting plate 6 is provided with an installation groove at the bottom, the support rollers 7 are arranged in the installation groove, the two ends of the support rollers 7 are rotatably connected with the inner walls of the installation groove, and the bottom of the support rollers 7 is in abutment with the top of the support plate 5, and the buffer assemblies are symmetrically connected between the U-shaped supporting plate 6 and the top of the support plate 5.

[0032] The buffer assembly comprises a telescopic rod 10, a buffer spring 11 and a fixed block 12, the opening of the U-shaped supporting plate 6 faces upwards, the two sides of the U-shaped supporting plate 6 are upwardly protruded, the storage battery 2 is arranged on the top of the U-shaped supporting plate 6, the length of the storage battery 2 is matched with the distance between the two side walls of the U-shaped supporting plate 6, the telescopic rod 10 is fixedly connected with the side of the U-shaped supporting plate 6, the fixed block 12 is fixedly connected with the end of the telescopic rod 10 away from the U-shaped supporting plate 6, the bottom of the fixed block 12 is fixedly connected with the top of the support plate 5, the buffer spring 11 is sleeved on the telescopic rod 10, and the two ends of the buffer spring 11 are fixedly connected with the positions of the telescopic rod 10 close to the two ends, and in the initial state, the telescopic rod 10 is in the half-extended state, and the buffer spring 11 is in the fully extended state.

[0033] The storage battery 2 is arranged, so that when the motor trolley body 1 in the application runs on a road section where explosives are buried in a mine, the storage battery 2 can be immediately started to supply power alone, the power supply problem of the specific road section of the mine is solved, the work efficiency is improved, and the power grid line or the storage battery 2 can be freely and flexibly selected for power supply on the normal road section, meanwhile, the storage battery 2 can also cooperate with the power grid line to supply power to the generator, and the work efficiency is improved.

[0034] In addition, during the operation of the motor trolley body 1, with the acceleration and deceleration of the motor trolley body 1, the plates and the separators in the storage battery 2 are prone to loosen and deform due to the impact of the electrolyte, so that the welding seam or the sealing glue of the storage battery 2 is cracked, the electrolyte is leaked, and danger is caused. At this time, the buffer assembly is arranged, before use, the storage battery 2 is placed on the top of the U-shaped supporting plate 6, the top plate 13 and the U-shaped pressing plate 14 are placed on the top of the storage battery 2, so that the top of the storage battery 2 is pressed by the top plate 13, at the same time, the two sides of the storage battery 2 can be clamped by the two protruding portions of the U-shaped pressing plate 14, then the U-shaped clamp 15 is buckled from top to bottom at the middle position of the U-shaped pressing plate 14, and the fixed screws 17 are used to lock and fix the two ends of the U-shaped clamp 15.

[0035] In use, as the electric locomotive body 1 accelerates or decelerates, the battery 2 can move away from the advancing direction of the electric locomotive body 1 or towards the advancing direction of the electric locomotive body 1 under the action of inertia, in the process, the U-shaped supporting plate 6 and the U-shaped pressing plate 14 can move synchronously under the driving of the battery 2, and as the U-shaped pressing plate 14 and the U-shaped supporting plate 6 move, the compression rollers 16 on the top inner wall of the U-shaped clamp 15 can roll against the top of the U-shaped pressing plate 14, and the supporting rollers 7 at the bottom of the U-shaped supporting plate 6 can roll along the top of the supporting plate 5, and as the U-shaped supporting plate 6 moves, the telescopic rods 10 and the buffer springs 11 in the advancing direction of the U-shaped supporting plate 6 can be compressed, and the remaining telescopic rods 10 and buffer springs 11 can be stretched, and as the buffer springs 11 are compressed or stretched, the kinetic energy of the battery 2 and the U-shaped supporting plate 6 can gradually be converted into elastic potential energy of the buffer springs 11, thereby reducing the impact of the acceleration or deceleration of the electric locomotive body 1 on the battery 2, and protecting the internal plates and separators of the battery 2 from loosening and deforming due to the impact of the electrolyte;

[0036] By providing the supporting plate 5 with the sleepers 4 at the bottom, the sleepers 4 can well absorb the vibration generated during the operation of the electric locomotive body 1, thereby reducing the impact of the vibration on the battery 2 and ensuring the normal and stable use of the battery 2.

[0037] As shown in Figures 1 to 6 The top plate 13 is horizontally pressed on the top of the battery 2, the U-shaped pressing plate 14 is located on the top of the top plate 13, the opening of the U-shaped pressing plate 14 faces downward, the two sides of the U-shaped pressing plate 14 protrude downward, the distance between the inner walls of the two sides of the U-shaped pressing plate 14 matches the length of the battery 2, the U-shaped clamp 15 is clamped at the middle position of the U-shaped pressing plate 14, the pantograph 3 is installed on the top of the U-shaped clamp 15, the opening of the U-shaped clamp 15 faces downward, the front and rear ends of the U-shaped clamp 15 are connected together by the fixing screws 17 at the top of the electric locomotive body 1, the recess is formed in the top inner wall of the U-shaped clamp 15, the number of compression rollers 16 is multiple, the multiple compression rollers 16 are uniformly arranged in the recess, the two ends of the compression rollers 16 are rotatably connected with the front and rear inner walls of the recess, the bottom of the compression rollers 16 is in abutment with the top of the U-shaped pressing plate 14, and the number of compression assemblies is multiple, the multiple compression assemblies are connected between the top plate 13 and the U-shaped pressing plate 14.

[0038] The pressing assembly comprises a limiting rod 18 and a pressing spring 19, the limiting rod 18 is vertically fixedly connected at the top of the top plate 13, the U-shaped pressing plate 14 is upwardly protruded at the position opposite to the limiting rod 18, the top end of the limiting rod 18 is vertically slidably inserted into the upwardly protruded part of the U-shaped pressing plate 14, and the pressing spring 19 is sleeved on the limiting rod 18, and the two ends of the pressing spring 19 are fixedly connected with the top plate 13 and the bottom of the upwardly protruded part of the U-shaped pressing plate 14 respectively;

[0039] When the battery 2 is placed on the top of the U-shaped supporting plate 6, the top plate 13 and the U-shaped pressing plate 14 are placed on the top of the battery 2, so that the top of the battery 2 is pressed by the top plate 13, and the two sides of the battery 2 can be clamped by the two protruded parts of the U-shaped pressing plate 14, then the U-shaped clamp 15 is buckled from top to bottom at the middle position of the U-shaped pressing plate 14, and the fixing screws 17 are used to lock and fix the two ends of the U-shaped clamp 15, and during the fixing of the U-shaped clamp 15 by the fixing screws 17, as the fixing screws 17 are gradually tightened, the U-shaped clamp 15 can gradually move downward and press the U-shaped pressing plate 14 downward along the limiting rod 18, and as the U-shaped pressing plate 14 moves downward, the pressing spring 19 can be gradually compressed, and as the pressing spring 19 is gradually compressed, the pressure of the pressing spring 19 on the top plate 13 can tightly press the top plate 13 on the top of the battery 2, so as to realize the pressing and fixing operation of the battery 2 in cooperation with the supporting device.

[0040] During the use of the battery 2, when the motor car body 1 vibrates, as the battery 2 moves in the vertical direction, the pressing spring 19 can be adaptively elongated or shortened, so as to convert the vibration of the motor car body 1 into the elastic potential energy of the pressing spring 19, thereby reducing the influence of the vibration on the battery 2.

[0041] In addition, due to the complex environment in the mine, the stones and other sundries on the inner wall of the top of the mine may have the risk of falling, at this time, by arranging the U-shaped pressing plate 14, when the stones and other sundries on the top of the mine fall, the U-shaped pressing plate 14 can play a protective role on the battery 2, so as to avoid the stones and other sundries directly colliding with the battery 2, thereby protecting the safety of the battery 2, and when the stones and other sundries fall on the top of the U-shaped pressing plate 14, as the stones collide with the U-shaped pressing plate 14, the U-shaped pressing plate 14 can move downward and compress the pressing spring 19 under the action of the collision force, so that the collision force of the stones and other sundries on the U-shaped pressing plate 14 is converted into the elastic potential energy of the pressing spring 19, thereby reducing the impact force of the stones and other sundries on the U-shaped pressing plate 14, and also reducing the influence of the impact force of the stones and other sundries on the battery 2.

[0042] As Figures 2 to 4As shown, the top of the top plate 13 and the top of the U-shaped supporting plate 6 are fixedly connected with a plurality of heat dissipation strips 20 in parallel, and the heat dissipation strips 20 on the top of the top plate 13 are always not in contact with the bottom of the U-shaped pressing plate 14, the length direction of the heat dissipation strips 20 is parallel to the front side of the electric locomotive body 1, the heat dissipation strips 20 are hollow metal structures, and the heat dissipation strips 20 are filled with cooling liquid;

[0043] The two sides of the U-shaped pressing plate 14 and the two sides of the U-shaped supporting plate 6 are provided with strip-shaped air inlet holes 21, the length of the air inlet hole 21 matches the width of the area where the heat dissipation strip 20 is located, the top edge of the air inlet hole 21 on the side of the front direction of the electric locomotive body 1 is fixedly connected with a flow guide strip 22 matching the length thereof, and the side of the flow guide strip 22 away from the air inlet hole 21 is inclined upward;

[0044] During the use or charging of the storage battery 2, the space in the mine is airtight, so that the heat generated by the storage battery 2 cannot be dissipated in time, which may cause the storage battery 2 to overheat and even cause danger. At this time, the heat dissipation strips 20 are provided, when the storage battery 2 generates heat, part of the heat generated by the storage battery 2 is transmitted to the heat dissipation strips 20 on the top of the top plate 13, part of the heat is directly transmitted to the heat dissipation strips 20 on the top of the U-shaped supporting plate 6 through the bottom of the storage battery 2, and part of the heat is directly transmitted to the air. When the heat generated by the storage battery 2 is transmitted to the heat dissipation strips 20, the cooling liquid in the heat dissipation strips 20 can quickly absorb the heat generated by the storage battery 2, thereby improving the heat dissipation efficiency of the storage battery 2 and ensuring the stability of the working temperature and the charging temperature of the storage battery 2;

[0045] By providing the air inlet hole 21, during the driving of the electric locomotive body 1, the external air can quickly enter the area where the heat dissipation strip 20 is located under the guidance of the flow guide strip 22, so that the heat absorbed by the heat dissipation strip 20 can be quickly dissipated to the air under the blowing of the airflow, thereby improving the cooling of the cooling liquid in the heat dissipation strip 20 and improving the heat absorption efficiency of the heat dissipation strip 20 to the storage battery 2, and ensuring the stability of the working temperature of the storage battery 2.

[0046] As shown in Figure 2 , Figure 3 and Figure 7 , the top of the storage battery 2 is provided with two terminal posts 23, the two terminal posts 23 are detachably sleeved with a drying box 24, the drying box 24 is placed with a drying agent, and the top plate 13 is provided with an insertion hole at a position opposite to the drying box 24, and the drying box 24 is inserted into the insertion hole;

[0047] When the battery 2 is used in the mine, since the air in the mine is relatively humid, the post 23 of the battery 2 can be short-circuited or abnormally discharged due to moisture during long-time use, thereby causing danger when the motor car body 1 runs through the road section where explosives are buried. At this time, by arranging the drying box 24, the drying agent in the drying box 24 can absorb the water vapor near the post 23 during the daily use of the post 23, so that the post 23 can be kept dry, avoiding short-circuit or abnormal discharge of the post 23 due to moisture.

[0048] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit it.

Claims

1. A trolley-battery hybrid electric railcar comprising a railcar body (1), characterized in that: The top of the electric locomotive body (1) is provided with a support device, the top of the support device is provided with a storage battery (2), the top of the storage battery (2) is provided with a fixing device for pressing and fixing it, and the top of the fixing device is provided with a pantograph (3); The support device comprises a sleeper (4), a support plate (5), a U-shaped supporting plate (6), a supporting roller (7) and a buffer assembly, a plurality of sleepers (4) are uniformly arranged on the top of the electric locomotive body (1), the support plate (5) is horizontally arranged on the top of the sleepers (4), the support plate (5) is fixedly connected with a fixing lug (8) at positions opposite to the sleepers (4) on the front and back sides, the fixing lug (8) and the sleeper (4) are fixedly connected together with the top of the electric locomotive through bolts (9), the U-shaped supporting plate (6) is horizontally placed on the top of the support plate (5), the bottom of the U-shaped supporting plate (6) is provided with an installation groove, a plurality of supporting rollers (7) are uniformly arranged in the installation groove, the two ends of the supporting roller (7) are rotatably connected with the inner walls of the front and back sides of the installation groove, and the bottom of the supporting roller (7) is attached to the top of the support plate (5), and a plurality of buffer assemblies are symmetrically connected between the two sides of the U-shaped supporting plate (6) and the top of the support plate (5). The fixing device comprises a top plate (13), a U-shaped pressing plate (14), a U-shaped clamp (15), a pressing roller (16) and a pressing assembly, the top plate (13) is horizontally pressed on the top of the storage battery (2), the U-shaped pressing plate (14) is located on the top of the top plate (13), and the opening of the U-shaped pressing plate (14) faces downward, the two sides of the U-shaped pressing plate (14) protrude downward, and the distance between the inner walls of the two sides of the U-shaped pressing plate (14) matches the length of the storage battery (2), the U-shaped clamp (15) is clamped at the middle position of the U-shaped pressing plate (14), and the pantograph (3) is installed on the top of the U-shaped clamp (15), the opening of the U-shaped clamp (15) faces downward, and the bottom of the front and back ends of the U-shaped clamp (15) is connected together with the top of the electric locomotive body (1) through fixing screws (17), a groove is formed in the top inner wall of the U-shaped clamp (15), a plurality of pressing rollers (16) are uniformly arranged in the groove, and the two ends of the pressing roller (16) are rotatably connected with the inner walls of the front and back sides of the groove, the bottom of the pressing roller (16) is attached to the top of the U-shaped pressing plate (14), and a plurality of pressing assemblies are connected between the top plate (13) and the U-shaped pressing plate (14).

2. The overhead line storage battery hybrid electric railcar of claim 1 wherein: The buffer assembly comprises a telescopic rod (10), a buffer spring (11) and a fixing block (12), the opening of the U-shaped supporting plate (6) faces upwards, the two sides of the U-shaped supporting plate (6) are upwardly protruded, the storage battery (2) is placed on the top of the U-shaped supporting plate (6), the length of the storage battery (2) is matched with the distance between the two inner walls of the two sides of the U-shaped supporting plate (6), the telescopic rod (10) is horizontally and vertically fixedly connected to the side of the U-shaped supporting plate (6), the fixing block (12) is fixedly connected to the end of the telescopic rod (10) away from the U-shaped supporting plate (6), and the bottom of the fixing block (12) is fixedly connected to the top of the supporting plate (5), and the buffer spring (11) is sleeved on the telescopic rod (10), and the two ends of the buffer spring (11) are fixedly connected to the positions close to the two ends of the telescopic rod (10).

3. The overhead line storage battery hybrid electric railcar of claim 2 wherein: The pressing assembly comprises a limiting rod (18) and a pressing spring (19), the limiting rod (18) is vertically fixedly connected to the top of the top plate (13), the U-shaped pressing plate (14) is upwardly protruded at the position opposite to the limiting rod (18), the top end of the limiting rod (18) is vertically and slidingly inserted into the upwardly protruded part of the U-shaped pressing plate (14), and the pressing spring (19) is sleeved on the limiting rod (18), and the two ends of the pressing spring (19) are fixedly connected to the top plate (13) and the bottom of the upwardly protruded part of the U-shaped pressing plate (14) respectively.

4. The line-accumulator battery hybrid electric railcar of claim 3 wherein: The top of the top plate (13) and the top of the U-shaped supporting plate (6) are both fixedly connected with a plurality of heat dissipation strips (20) in parallel, the heat dissipation strips (20) on the top of the top plate (13) are always not in contact with the bottom of the U-shaped pressing plate (14), the length direction of the heat dissipation strips (20) is parallel to the front side of the electric locomotive body (1), the heat dissipation strips (20) are hollow metal structures, and the heat dissipation strips (20) are filled with cooling liquid.

5. The overhead line storage battery hybrid electric railcar of claim 4 wherein: The two sides of the U-shaped pressing plate (14) and the two sides of the U-shaped supporting plate (6) are both provided with strip-shaped air inlet holes (21), and the length of the air inlet hole (21) is matched with the width of the area where the heat dissipation strips (20) are located.

6. The line-accumulator battery hybrid electric railcar of claim 5 wherein: The top edge of the air inlet hole (21) on the side of the front moving direction of the electric locomotive body (1) is fixedly connected with a flow guide strip (22) matched with the length of the air inlet hole (21), and the side of the flow guide strip (22) away from the air inlet hole (21) is upwardly inclined.

7. The line-accumulator battery hybrid electric railcar of claim 6 wherein: In the initial state, the telescopic rod (10) is in a semi-extended state, and the buffer spring (11) is in a fully extended state.

8. The line-accumulator battery hybrid electric railcar of claim 7 wherein: The top of the storage battery (2) is provided with two terminal posts (23), the two terminal posts (23) are detachably sleeved with a drying box (24), the drying box (24) is filled with a drying agent, the top plate (13) is provided with a jack at the position opposite to the drying box (24), and the drying box (24) is inserted into the jack.

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