CN115284801A

CN115284801A - Self-locking chassis for highway and railway dual-purpose vehicle

Info

Publication number: CN115284801A
Application number: CN202211146165.0A
Authority: CN
Inventors: 张晓东; 吴才章; 王莉
Original assignee: Henan University of Technology
Current assignee: Henan University of Technology
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2022-11-04

Abstract

The invention relates to a self-locking chassis for a highway and railway dual-purpose vehicle, which mainly comprises: the road wheel can be driven by the hub motor powered by the storage battery, the steel wheel for the rail can run on the steel rail through gear transmission, the rotatable big arm is used for switching different running states of the road and the iron, and the limiting device can automatically lock the big arm. The method is characterized in that: when in a road state, the hub motor independently drives road wheels to rotate. In a railway state, road wheels synchronously rotate, and a driving gear coaxially arranged on the inner side of the road wheels transmits the driving gear to a meshed driven gear to drive a steel wheel for the rail coaxially arranged to rotate. When the road is switched to the railway state, the limiting device can automatically lock the large arm at a fixed position in a power-off state, and the tight meshing transmission of the driving gear and the driven gear is ensured. When the vehicle is switched from the railway to the road state, the switch power supply needs to electrify the limiting device and then the big arm can be unlocked, so that the reliability and the safety of the vehicle are ensured when the vehicle is switched from the railway to the road state.

Description

Self-locking chassis for highway and railway dual-purpose vehicle

Technical Field

The invention relates to a highway and railway dual-purpose multipurpose vehicle, in particular to an improved self-locking highway and railway dual-purpose vehicle chassis, belonging to the technical field of traffic equipment.

Background

The utility model relates to a road-rail vehicle which can be switched between two running states of a road and a track, and can run on the road surface of a common road and the track. The combined type road-rail vehicle has the advantages of flexibility in maneuvering, wide application and convenience in use, can be applied to the application fields of rail vehicle traction shunting, railway engineering construction, emergency rescue and relief, cargo transfer and the like in the industries of urban rail transit, railway vehicle sections, mining, ports, storage logistics and the like, and has better applicability. The foreign dual-purpose vehicles for the highway and the railway are earlier in research, at present, germany, america, japan and other countries have the world leading level in the field of railway vehicles, and the produced dual-purpose vehicles for the highway and the railway are mainly used for traction and shunting of the railway vehicles and customizing a few special dual-purpose vehicles for the highway and the railway. The introduction and the application of the combined vehicle are relatively late in China, and the combined vehicle developed in recent years is mainly used for traction shunting, overhead operation, fire fighting and emergency rescue and the like.

The existing road-rail dual-purpose vehicle usually adopts an internal combustion engine as vehicle driving power and adopts a hydraulic system as an actuating device to realize the switching operation of two operation states of a road and a railway. With the rapid development of high-speed railways and urban rail transit industry in China, the application range of the dual-purpose vehicles for the highway and the railway in the future becomes wider. In recent years, the problem of urban traffic congestion becomes more severe, and particularly, along with the increasing aging of the population in China, the demand for a public transport vehicle for public and railway use, which is green and environment-friendly and can be conveniently and rapidly carried out without obstacles, is increasingly urgent. The improved road-rail dual-purpose vehicle which is simpler in structure, environment-friendly, efficient and good in economical efficiency is researched and developed on the basis of the existing road-rail dual-purpose vehicle, and has important practical significance.

The prior art discloses a highway-railway dual-purpose overhead working truck with a patent application number of CN201220505735, and the technical scheme comprises the following steps: in order to combine two running mechanisms of a highway and a railway, a chassis running system with a frame shaped like a Chinese character 'jing' is adopted, namely the two running mechanisms of the highway and the railway respectively adopt a large frame and a small frame, and a big running wheel used for running on the highway on the large frame and a steel wheel used for running on the small frame on the railway are arranged in a cross way. The road and railway two sets of independent traveling systems are provided, and the two sets of traveling systems comprise a road traveling system for controlling a traveling large wheel and a railway traveling system for controlling a steel wheel. The road traveling system and the railway traveling system are both hydraulic main pumps driven by an engine, the hydraulic main pumps provide hydraulic pressure for hydraulic motors, and the hydraulic motors further drive steel wheels or traveling main wheels to rotate and run. The two sets of traveling systems share one hydraulic main pump, a double-end output gearbox is adopted, and the hydraulic main pump is controlled by a power switching valve to provide hydraulic pressure for a steel wheel hydraulic motor or provide hydraulic pressure for a traveling main wheel hydraulic motor. The scheme of the invention can meet the requirement of running on highways and railways at the same time, but the highway and railway running chassis system respectively adopts a large frame and a small frame, and the chassis structure is complex. Two running systems of the highway and the railway are both provided with engines to drive the same hydraulic main pump, and in order to respectively provide hydraulic power for two running systems of the highway and the railway, a relatively complex power switching valve and a double-head output gearbox are adopted. The scheme of the invention adopts the traditional internal combustion engine to drive the hydraulic power, the design, production and assembly processes of the whole vehicle are complex, the manufacturing cost is high, and the later maintenance is not facilitated.

Disclosure of Invention

The invention aims to provide an improved pure electric self-locking chassis technical scheme of a combined car for both roads and railways aiming at the defects and shortcomings of the design scheme of the common combined car for both roads and railways, so as to solve the problems that the chassis structure of the combined car for both internal combustion engines and roads and railways and a combined driving and switching device for both roads and railways are complex, the environment is polluted, the noise is high, the daily operation and later maintenance cost is high, and the like.

In order to achieve the purpose, the invention can adopt the following technical scheme: the invention relates to a main body structure of an improved pure electric self-locking type chassis of a combined vehicle for highway and railway, which mainly comprises a vehicle body capable of bearing load, a storage battery for providing a power source for the whole vehicle, highway wheels which are provided with four hub motors and are driven independently, four steel wheels for rails which can run on steel rails and are driven by gears, a rotatable large arm for switching different running states of the highway and railway, a limiting device capable of automatically locking the large arm at a fixed position and the like.

Further, the bottom central point of modified electricelectric moves from locking-type highway railway vehicle chassis put and has arranged the battery, four wheel hub motor cabins have been arranged at four angles of chassis bottom, four wheel hub motors are surely installed respectively in four wheel hub motor cabins insidely for four highway wheels that go hang coaxial arrangement in every wheel hub motor's pivot through installing the shock absorber of chassis bottom on the highway.

Furthermore, the improved pure electric self-locking type highway-railway dual-purpose vehicle is characterized in that a stepping motor is installed at the center of the upper portion of a chassis of the improved pure electric self-locking type highway-railway dual-purpose vehicle, the stepping motor is stably installed on the chassis through a motor base, the stepping motor drives worms installed at two ends of the chassis to rotate through a driving shaft, the worms are installed on worm supports, and the worms can drive worm gears to rotate in the forward direction or the reverse direction. The spiral angles of the two worms at the two ends of the chassis are just opposite, the large arm is arranged on the large arm support, and the worm wheel and the upper end of the large arm are coaxially arranged. The lower end of the large arm is provided with steel wheels for running on the steel rail, the outer side of each steel wheel for the rail is coaxially provided with a driven gear, and the inner side of each road wheel is coaxially provided with a driving gear. Each driving gear is vertically aligned with the adjacent driven gear just up and down, and the driving gear and the adjacent driven gear can be meshed with each other or separated from each other according to the driving requirements of two different driving states of a railway and a highway.

Furthermore, two ends of the improved pure electric self-locking type chassis for the highway and railway are provided with four limiting devices which can be used for automatically locking the large arm. It should be noted that the four limit devices of the improved pure electric self-locking type chassis for a highway-railway dual-purpose vehicle synchronously adopt synchronous control logic, that is, the switching power supplies of the four limit devices are all synchronously powered on or powered off. The limiting grooves are formed in the corresponding positions of the two sides of each large arm, and when the railway runs, the limiting convex teeth on the two sides of the limiting device are in limiting fit with the limiting grooves on the two sides of the large arms, so that the large arms are automatically locked at required transmission fixing positions, and tight meshing transmission of the driving gear and the driven gear can be guaranteed.

The improved pure electric self-locking type chassis for the combined vehicle has the advantage of ingenious and reasonable design. When the vehicle runs on a highway, the four hub motors supplied with power by the storage battery independently drive the four road wheels to rotate, and the improved pure electric self-locking type chassis for the highway and railway dual-purpose vehicle can run on the road surface of a common highway. When the vehicle runs on a railway, the four hub motors powered by the storage battery drive the road wheels to synchronously rotate, the driving gears coaxially arranged on the inner sides of the road wheels transmit the driving gears to the driven gears meshed together, and the steel wheels for the rail coaxially arranged on the inner sides of the driven gears are driven to rotate, so that the chassis of the improved pure electric self-locking type combined vehicle for the highway and the railway can normally run on the steel rail. The traditional combined vehicle adopts a relatively complex power switching valve and a double-head output gearbox to switch back and forth so as to drive two sets of running systems of the combined vehicle, and even part of the traditional combined vehicle adopts two sets of independent power driving running systems under two running states of the combined vehicle. The improved pure electric self-locking type chassis for the highway and railway dual-purpose vehicles adopts a pure electric power driving mode under two running states of highway and railway, and the transmission device is simpler and more reliable and runs stably.

When the improved pure electric self-locking type chassis of the highway and railway dual-purpose vehicle is switched from a highway running state to a railway running state, the limiting device can automatically fix and keep the large arm in a locking state in a power-off state, and tight meshing transmission of the driving gear and the driven gear is guaranteed. When the improved pure electric self-locking type chassis of the highway-railway dual-purpose vehicle is switched from a railway running state to a highway running state, the switch power supply needs to electrify the limiting device and then the big arm can be unlocked from the transmission fixing position, so that the reliability and the safety of the chassis of the vehicle are ensured when the chassis is switched from the railway running state to the highway state.

The improved pure electric self-locking type chassis for the combined highway and railway vehicle adopts a pure electric power source for driving the whole vehicle and switching the combined highway and railway under the running states of the highway and the railway, and has the advantages of energy conservation, environmental protection, zero emission, and low running noise. The air pollution caused by tail gas emission when the traditional combined vehicle adopting an internal combustion engine as power runs is solved, the working environment is improved, and the air-conditioning system is suitable for indoor and outdoor applications in various fields. The improved pure electric self-locking type chassis for the combined vehicle for the highway and the railway has the advantages of simple and compact integral structure, safe and reliable operation, flexibility, convenience and rapidness in switching between running states of the highway and the railway, economy and high efficiency, simplicity and convenience in maintenance of the vehicle chassis, capability of expanding and developing various combined vehicles for the highway and the railway on the chassis, and strong adaptability.

Drawings

FIG. 1 is a schematic diagram of a railway running state structure of a self-locking chassis of a combined highway and railway vehicle;

FIG. 2 is a side view of a self-locking chassis for a convertible vehicle for use in both highway and railway in a railway driving mode;

FIG. 3 is a side view of a self-locking chassis for a road and railway vehicle in a road driving state;

FIG. 4 is a top view of a self-locking type chassis for a convertible vehicle for highway and railway running;

FIG. 5 is a structural diagram of a limiting device of a self-locking chassis of a combined highway and railway vehicle;

FIG. 6 is a schematic diagram showing the position-limiting state of a position-limiting device of a self-locking chassis of a combined highway and railway vehicle;

the numerical numbers in fig. 1, 2, 3, 4, 5, and 6 represent: the device comprises a worm support 1, a worm wheel 2, a worm 3, a large arm support 4, a driving shaft 5, a steel wheel support for rails 6, a stepping motor 7, a motor base 8, a large arm 9, a steel wheel for rails 10, a limiting device 11, a driven gear 12, a driving gear 13, road wheels 14, a motor cabin for wheel hubs 15, a storage battery 16, a steel rail 17, a motor cabin for wheel hubs 18, a shock absorber suspension 19, a vehicle body 20, a limiting convex tooth 112, a limiting lever 113, a limiting cylinder 114, a return spring 115, a base 116, a stand column 117, an electromagnet 118, a switching power supply 119 and a limiting groove 120.

Detailed Description

The following description will further explain embodiments of the present invention with reference to the accompanying drawings.

The improved pure electric self-locking type highway-railway dual-purpose vehicle chassis scheme is mainly suitable for the technical field of multipurpose green traffic equipment, particularly, the scheme of the invention uses pure electric power, can adapt to various different traffic running environments such as roads, railways and the like, can conveniently and quickly switch between running states of the roads and the railways and has general adaptability. As is clear from fig. 1, 2, 3 and 4, the improved chassis of the pure electric self-locking type convertible vehicle for highway and railway consists of a vehicle body 20 capable of bearing loads, a storage battery 16 for providing power for the whole vehicle, a rail steel wheel 10 for running on a steel rail 17, road wheels 14 for running on the road, a large arm 9 capable of rotating under the drive of a stepping motor 7, a worm 3 and a worm wheel 2 for switching two running states of the road and the railway, a limiting device 11 for automatically locking the large arm 9 and the like.

Further, as can be clearly seen from fig. 1, 2 and 6, in order to ensure the tight engagement between the driving gear 13 and the driven gear 12 when the improved pure electric self-locking type chassis for highway and railway runs on a railway, the two ends of the body 20 of the improved pure electric self-locking type chassis for highway and railway are provided with the limiting devices 11 for automatically locking the large arm 9. An upright post 117 is mounted on a base 116 of each limiting device 11 of the improved pure electric self-locking type chassis of the highway-railway dual-purpose vehicle, a limiting lever 113 is movably mounted at the upper end of the upright post 117, a return spring 115 is mounted at the right end of the limiting lever 113, the return spring 115 is assembled in a limiting barrel 114, and the return spring 115 penetrates through the limiting barrel 114 and is connected with the right end of the limiting lever 113. The left end of the limit lever 113 is designed with a limit convex tooth 112, and the lower part of the limit convex tooth 112 is provided with an electromagnet 118 and a matched switching power supply 119.

Further, as is clear from fig. 3, when the improved chassis of the electric-only self-locking type convertible vehicle for highway and railway is in a highway driving state, the large arms 9 at the two ends of the vehicle body 20 are synchronously in an upturned position, and the four rail steel wheels 10 which can be used for driving on the steel rails 17 are stably supported on the upper portions of the rail steel wheel brackets 6. At the moment, the power supply of the switching power supply 119 is kept disconnected, the coil of the electromagnet 118 is always in a power-off state, the contact of the electromagnet 118 is released, the right end of the limiting lever 113 sinks and is limited at the upper end of the limiting cylinder 114 under the action of downward pulling force of the right end return spring 115, and the limiting convex tooth 112 at the left end of the limiting lever 113 is in a default upwarping state. Namely, the limiting device 11 is in the power-off state to be limited by default. At the moment, the improved pure electric self-locking type chassis for the combined vehicle for the highway and the railway uses the storage battery 16 to provide power for the four hub motors 18, the hub motors 18 drive the road wheels 14 to rotate, and the improved pure electric self-locking type chassis for the combined vehicle for the highway and the railway can normally run on a common road.

Further, as can be clearly seen from fig. 1, 2 and 4, when the improved pure electric self-locking type chassis for rail road and railway vehicle needs to run on the steel rail 17, the improved pure electric self-locking type chassis for rail road and railway vehicle in a road running state is firstly run to a proper position right above the steel rail 17 and in the middle, and at this time, the steel wheel 10 for rail is exactly vertically aligned with the steel rail 17. The battery 16 starts to continuously supply power to the stepping motor 7 on the upper portion of the vehicle body 20. The stepping motor 7 drives the worms 3 at the two ends of the vehicle body 20 to coaxially rotate through the driving shaft 5, the worms 3 drive the worm wheel 2 to rotate, and the worm wheel 2 coaxially drives the large arm 9 to rotate around the large arm support 4. Since the spiral angles of the two worms 3 at both ends of the vehicle body 20 are just opposite, the rotation directions of the two pairs of large arms 9 at both ends of the vehicle body 20 are also opposite, that is, the rail-use wheels 10 mounted on the distal ends of the two pairs of large arms 9 are also rotated and expanded outward from the upper portion of the rail-use wheel bracket 6 to both sides of the vehicle body 20 at the same time. When the steel wheels 10 for the rails mounted at the tail ends of the two large arms 9 are unfolded to be in contact with the steel rails 17, the two pairs of large arms 9 continue to rotate and unfold at the moment, the four steel wheels 10 for the rails replace road wheels 14, and the whole improved pure electric self-locking chassis for the highway and railway dual-purpose vehicle is upwards supported on the steel rails 17. At this point the body 20 will gradually rise and the four road wheels 14 will be suspended, i.e. the road wheels 14 are no longer in contact with the rails 17 or the railway bed. The rotary unfolding action of the two pairs of large arms 9 at both sides of the vehicle body 20 is continued until the driven gears 12 and the corresponding driving gears 13 are tightly engaged with each other.

Further, as can be clearly seen from fig. 3 and 5, during the rotating and unfolding action of the two pairs of large arms 9, the limiting device 11 is always kept in the default power-off state to be limited. As shown in fig. 5, when the large arm 9 is unfolded to touch the limit convex teeth 112 on both sides of the limit device 11, the large arm 9 rotating to be unfolded will slowly spread the limit convex teeth 112 on both sides, and the large arm 9 will slowly push into the limit device 11. When the two pairs of large arms 9 continue to rotate and unfold until the driven gear 12 and the adjacent driving gear 13 are tightly meshed with each other, the limiting convex teeth 112 at the two sides are just aligned with the limiting grooves 120 at the two sides of the large arms 9. Under the action of the downward pulling force of the return spring 115 at the right end of the limit lever 113, the limit convex tooth 112 at the left end of the limit lever 113 is just wedged in the limit groove 120 of the large arm 9, and the state at this time is as shown in fig. 6. At this time, the power supply of the stepping motor 7 is cut off, the two pairs of large arms 9 stop rotating and unfolding, and the two pairs of large arms 9 at the two ends of the vehicle body 20 are locked at the transmission fixing positions, so that the tight meshing transmission of the driving gear 13 and the driven gear 12 can be ensured. At the moment, the quick conversion from the road running state to the railway running state of the improved pure electric self-locking type chassis for the highway and railway is completed. When the vehicle runs on a railway, the improved pure electric self-locking type chassis for the highway and railway dual-purpose vehicle synchronously supplies power to four hub motors 18 by using the storage battery 16, the hub motors 18 drive the highway wheels 14 and the driving gears 13 arranged on the inner sides of the highway wheels 14 to coaxially rotate, the driving gears 13 transmit the driving gears 12 meshed together to drive the driven gears 12 and the steel wheels 10 for the rail coaxially arranged on the inner sides of the driven gears 12 to rotate. Finally, the improved pure electric self-locking type combined vehicle chassis can normally run on the steel rail 17.

Further, as can be clearly seen from fig. 1, 5, and 6, when the improved pure electric self-locking type chassis for a convertible vehicle for highway and railway needs to be converted from a railway running state to a highway running state, the switching power supply 119 of the limiting device 11 is firstly switched on to keep continuously supplying power to the electromagnet 118, the contact of the electromagnet 118 is in an attraction state, that is, the left end of the limiting lever 113 is attracted, the limiting protruding tooth 112 is disengaged from the limiting groove 120, and the limiting device 11 is in a continuous unlocking state. At this time, the storage battery 16 starts to provide continuous power for the stepping motor 7 on the upper portion of the vehicle body 20, the stepping motor 7 drives the worms 3 at the two ends of the vehicle body 20 to start to rotate reversely, and the two pairs of large arms 9 at the two ends of the vehicle body 20 start to rotate upward and inwardly fold toward the upper portion of the vehicle body 20. As the large arm 9 rotates to be closed, the driven gear 12 is disengaged from the driving gear 13, the rail steel wheel 10 is gradually lifted up and finally disengaged from the rail 17, the vehicle body 20 is gradually dropped, and the four road wheels 14 are finally dropped on the roadbed of the rail 17. When the four rail wheels 10 are mounted on the upper portion of the rail wheel support 6 as the large arms 9 are further rotated, the power supply of the battery 16 of the stepping motor 7 is cut off, and the two pairs of large arms 9 are not rotated any more. At this time, the switching power supply 119 is also synchronously turned off, and the limiting device 11 is restored to be in the default power-off to-be-limited state under the action of the return spring 115. At the moment, the quick conversion from the railway running state to the highway running state of the improved pure electric self-locking type chassis for the highway and railway is completed. At the moment, the improved pure electric self-locking type chassis for the highway and railway dual-purpose vehicle can normally run on a common road. Compare with several traditional electronic combined car structures, the pure electric of improved generation adopt pure electric power from locking-type combined car chassis, vehicle chassis and transmission simple structure are reliable, and can convenient and fast ground looks switch over between highway, the railway state of traveling, have comparatively outstanding performance advantage.

Claims

1. A self-locking chassis for highway and railway vehicles mainly structurally comprises a vehicle body (20) capable of bearing loads, highway wheels (14) independently driven by a hub motor (18), steel wheels (10) for rails driven by a driving gear (13), a rotatable large arm (9) and a limiting device (11) capable of automatically locking the large arm (9); the method is characterized in that: install stand (117) on base (116) of stop device (11), the upper end movable mounting of stand (117) has spacing lever (113), reset spring (115) are installed to spacing lever (113) right-hand member, reset spring (115) are assembled in spacing section of thick bamboo (114), reset spring (115) pass spacing section of thick bamboo (114) and link to each other with spacing lever (113) right-hand member, the left end design of spacing lever (113) has spacing dogtooth (112), electro-magnet (118) and supporting switching power supply (119) are installed to the lower part of spacing dogtooth (112).

2. The self-locking type chassis for highway-railway dual-purpose vehicles as claimed in claim 1, wherein: when the vehicle runs on a highway, the large arms (9) at the two ends of the vehicle body (20) are synchronously positioned at an upturning position, and four steel wheels (10) for the rail, which can be used for running on the steel rail (17), are supported on the upper part of the steel wheel bracket (6) for the rail; when the road driving state is switched to the railway driving state, the steel wheels (10) for the rails, which are arranged at the tail ends of the two pairs of large arms (9), synchronously rotate outwards from the upper parts of the steel wheel supports (6) for the rails to both sides of the vehicle body (20), the large arms (9) slowly support the limiting convex teeth (112) on both sides of the limiting device (11) until the driven gear (12) and the adjacent driving gear (13) are mutually and tightly meshed, the limiting convex teeth (112) on both sides just align to the limiting grooves (120) on both sides of the large arms (9), under the downward pulling force of the return spring (115) at the right end of the limiting lever (113), the limiting convex teeth (112) at the left end of the limiting lever (113) are just wedged in the limiting grooves (120) of the large arms (9) at the moment, and the two pairs of large arms (9) at both ends of the vehicle body (20) are automatically locked at the transmission fixing positions.

3. The self-locking type chassis for highway-railway dual-purpose vehicles as claimed in claim 1, wherein: when the railway runs, a driving gear (13) coaxially arranged on the inner side of a road wheel (14) is used for transmitting the driving gear to a driven gear (12) which is meshed together, and a steel wheel (10) for the rail coaxially arranged on the inner side of the driven gear (12) is driven to rotate; when the railway running state is switched to the highway running state, the contact of the electromagnet (118) is in a power supply suction state, the limiting convex teeth (112) are separated from the limiting grooves (120), the stepping motor (7) drives the worms (3) at two ends of the vehicle body (20) to rotate reversely, two pairs of large arms (9) at two ends of the vehicle body (20) rotate to the upper side of the vehicle body (20) and are folded inwards, the driven gear (12) is separated from the driving gear (13), and finally the four steel wheels (10) for the rail are supported on the upper portion of the steel wheel support (6) for the rail.