On-rail and off-rail conversion device for fire-fighting vehicles

Abstract

According to the scheme, a vehicle chassis comprises a support, a plurality of road wheel sets, a plurality of rail wheel sets and a switching assembly, and the road wheel sets, the rail wheel sets and the switching assembly are arranged on the highway and railway upper and lower rail switching device of the fire-fighting vehicle. The road wheel set and the rail wheel set are switched through the switching assembly, switching between the road and the railway is achieved, the first telescopic assembly and the second telescopic assembly are arranged in the rail wheel set and the road wheel set correspondingly, and when the complex road surface condition is handled, the height and the angle of each wheel set can be adjusted through the telescopic assemblies; the road holding force and the rolling resistance are optimized, the structural stability of the whole wheel set is jointly guaranteed, the adaptability and the flexibility of the device to complex terrains are improved, the driving efficiency is guaranteed, and the shaking and out-of-control risks caused by uneven and bumpy road surfaces are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a highway and railway dual-purpose mechanical equipment technical field, especially a fire vehicle highway and railway up and down rail conversion device BACKGROUND

[0002] With the development of economy and urbanization process, the diversity and efficiency of fire rescue equipment are increasingly demanded. China is vast in territory, including cities, villages and remote mountainous areas and various terrains, and fire can occur at any time in various places, sometimes the fire scene can be located in places that cannot be directly reached by ordinary fire engines, such as railway lines, and emergency rescue conditions are complex, the ground is not flat, and the fire engine needs to have the function of driving on the highway and railway. At present, the highway and railway dual-purpose vehicle realizes the driving conversion of highway and railway through highway and railway up and down rail conversion, but the highway and railway up and down rail conversion has certain requirements for the environment during conversion, and the uneven ground will affect the fluency and stability of the highway and railway up and down rail conversion, which will greatly reduce the speed and efficiency of rescue response.

[0003] At present, there is no high highway and railway up and down rail conversion structure for various complex terrains, and the existing highway and railway up and down rail conversion mechanism is not suitable for large-volume and large-load fire rescue vehicles. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming at least one of the defects of the prior art, and provides a fire vehicle highway and railway up and down rail conversion device, which solves the technical problem that the existing highway and railway up and down rail conversion mechanism cannot cope with various complex terrains.

[0005] A fire vehicle highway and railway up and down rail conversion device, characterized in that it comprises:

[0006] A support, a plurality of road wheel groups and a plurality of rail wheel groups arranged on the support, and a switching assembly for switching the road wheel groups and the rail wheel groups;

[0007] The switching assembly is connected with the road wheel groups and the rail wheel groups respectively;

[0008] The road wheel groups comprise a front wheel group, a rear wheel group, and a steering wheel group arranged between the front wheel group and the rear wheel group;

[0009] The rail wheel groups are arranged between the front wheel group and the steering wheel group, and / or the rail wheel groups are arranged between the rear wheel group and the steering wheel group.

[0010] The switching assembly is arranged to switch the road wheel set and the track wheel set, so that the chassis can be switched freely and stably between the road and the track without changing the vehicle or complicated preparation, and the device can adapt to the flat road or the track with specific track by quickly switching the different wheel sets, ensuring the stability and reliability of the vehicle under various terrain conditions, and the vehicle can optimize the driving path by efficiently using two traffic resources, reducing time and transportation cost, and improving overall transportation efficiency.

[0011] The track wheel set comprises a driving wheel set and a driven wheel set, and the switching assembly comprises a first steering device.

[0012] The first steering device is used to drive the driving wheel set to cut into the external track.

[0013] The driving wheel set is rotatably connected to the support through the first steering device.

[0014] The driven wheel set is rotatably connected to the support.

[0015] The driving wheel set is rotatably connected to the support through the first steering device, which can adjust the angle and position of cutting into the track as needed, realizing quick and stable switching from the road to the track. The driven wheel set is rotatably connected to the support, which can follow the action of the driving wheel set and maintain stable driving of the vehicle on the track. The first steering device precisely controls the angle and position of the driving wheel set cutting into the track, reduces the driving interruption and time waiting caused by the road condition conversion of the road and the railway, avoids safety hazards caused by improper switching, and the stable driving state reduces the wear of each wheel set and prolongs the service life of the vehicle.

[0016] In order to ensure that the driving wheel set and the driven wheel set can stably support the entire device and accurately guide on the track, the driving wheel set and the driven wheel set respectively comprise:

[0017] A pair of track guide wheels;

[0018] A first shaft is connected to the two track guide wheels at both ends, which cooperates with the track guide wheels to provide stable support and accurate guiding function for the vehicle driving on the track, and reduces the failure and damage caused by bumping or deviating from the track.

[0019] A first cross bar is used to connect with the support or the first steering device.

[0020] The first telescopic assembly is used to connect the first rotating shaft and the first horizontal rod, so that the driving wheel set and the driven wheel set can be telescoped and adjusted to a certain extent, and the device can adapt to different ground heights, so as to help the device to maintain the best running state under different working environments and load requirements, and improve the adaptability and flexibility of the device.

[0021] In order to realize the flexible adjustment of the driving wheel set and the driven wheel set in the vertical plane and further ensure the stable driving on the road surface with different heights, the first telescopic assembly of the track wheel set is a pair of first telescopic support rods, the first telescopic support rods are spaced apart and one end of each of the first telescopic support rods is connected with the first horizontal rod and the other end is connected with the first rotating shaft.

[0022] The first telescopic support rods are inclined to make the first rotating shaft and the first horizontal rod parallel to each other and in different vertical planes.

[0023] In order to optimize the road driving, the front wheel set and the rear wheel set respectively include:

[0024] A pair of road driving wheels;

[0025] The second rotating shaft is connected with the two road driving wheels at two ends, has low rolling resistance and good grip, and improves the overall safety of the vehicle.

[0026] The second horizontal rod is used to be connected with the support to enhance the structural strength of the vehicle, so that the vehicle can maintain stability when driving at high speed or encountering an emergency situation.

[0027] The second telescopic assembly is used to connect the second rotating shaft and the second horizontal rod, and has an adjusting function to adjust the height and angle of the front wheel set and the rear wheel set to a certain extent, so as to optimize the driving performance.

[0028] In order to make the vehicle more adaptable to complex ground, the second telescopic assembly is a pair of second telescopic support rods, the second telescopic support rods are spaced apart and one end of each of the second telescopic support rods is connected with the second horizontal rod and the other end is connected with the second rotating shaft.

[0029] The second telescopic supporting rod is obliquely arranged, so that the second rotating shaft and the second cross rod are parallel to each other and are in different vertical planes, the height and the angle of the second rotating shaft relative to the second cross rod can be flexibly changed by adjusting the length of the second telescopic supporting rod, and the second telescopic supporting rod is obliquely arranged, the ground adhesion and the rolling resistance are optimized, and the structural stability of the whole wheel set is jointly ensured, the driving efficiency is improved, and the shaking and the risk of losing control caused by the uneven road bumping is reduced.

[0030] The damping device is arranged on the second rotating shaft and is used for absorbing and buffering the vibration from the road, reducing the shaking and the deviation of the vehicle, and helping to improve the control performance of the vehicle and preventing the damage of the vehicle parts caused by long-term vibration and impact.

[0031] The switching assembly further comprises a steering lifting platform, the steering wheel set is connected with the support through the steering lifting platform, and the steering lifting platform is used for controlling the steering wheel set to perform the steering operation and adjusting the height and the angle of the steering wheel set.

[0032] The steering lifting platform comprises a shell, a lifting mechanism arranged in the shell, and a rotating mechanism arranged below the lifting mechanism.

[0033] The advantageous effects of the fire vehicle public railway up-and-down rail conversion device are as follows: the road wheel set, the track wheel set and the switching assembly are arranged, the road wheel set and the track wheel set are switched through the switching assembly, the conversion on the highway and the railway is realized, the first telescopic assembly and the second telescopic assembly are arranged in the track wheel set and the road wheel set respectively, the height and the angle of each wheel set can be adjusted through the telescopic assembly when the complex road surface condition is coped with, the vehicle chassis further comprises a damping device, the vibration from the road is absorbed and buffered, the shaking and the deviation of the vehicle are reduced, the ground adhesion and the rolling resistance are optimized, the structural stability of the whole wheel set is jointly ensured, the adaptability and the flexibility of the device to the complex terrain are improved, the driving efficiency is ensured, and the shaking and the risk of losing control caused by the uneven road bumping are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without paying creative labor.

[0035] Fig. 1 It is the overall structure schematic diagram of the fire vehicle public railway up-and-down rail conversion device.

[0036] Fig. 2is a specific structure schematic diagram of the track wheel group.

[0037] Fig. 3 is a specific structure schematic diagram of the steering wheel group.

[0038] The reference signs in the specification include: support 100, road wheel group 200, front wheel group 210, rear wheel group 220, highway running wheel 230, second rotating shaft 231, damping device 2311, second cross rod 232, second telescopic assembly 233, second telescopic supporting rod 2331, steering wheel group 230, track wheel group 300, driving wheel group 310, driven wheel group 320, track guide wheel 330, first rotating shaft 331, first cross rod 332, first telescopic assembly 333, first telescopic supporting rod 3331, switching assembly 400, first steering device 410, steering lifting platform 420, shell 421, lifting mechanism 422, rotating mechanism 423. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will combine the drawings to make the utility model embodiment further detailed description:

[0040] Embodiment: refer to Figs. 1-3

[0041] As Fig. 1 shown, a fire vehicle public railway up and down track conversion device, characterized in that, comprising:

[0042] Support 100, a plurality of road wheel groups 200 and a plurality of track wheel groups 300 are arranged on the support 100, and a switching assembly 400 for switching the road wheel group 200 and the track wheel group 300 is arranged on the support 100;

[0043] The switching assembly 400 is connected with the road wheel group 300 and the track wheel group 200 respectively.

[0044] As Fig. 2 shown, the road wheel group 200 includes: a front wheel group 210, a rear wheel group 220, and a steering wheel group 230 arranged between the front wheel group 210 and the rear wheel group 220.

[0045] The track wheel group 300 is arranged between the front wheel group 210 and the steering wheel group 230, and / or the track wheel group 300 is arranged between the rear wheel group 220 and the steering wheel group 230.

[0046] By setting the switching assembly 400 to switch the road wheel group 200 and the track wheel group 300, the chassis can smoothly and reliably switch between highways and railways without the need to change vehicles or perform complex preparations. Whether it is a flat highway or a railway with specific tracks, the device can adapt by quickly switching different wheel groups, ensuring the stability and reliability of the vehicle in various terrain conditions. By efficiently utilizing both transportation resources, the vehicle can optimize the travel path, reduce time and transportation costs, and improve overall transportation efficiency.

[0047] The track wheel group 300 includes a driving wheel group 310 and a driven wheel group 320, and the switching assembly 400 includes a first steering device 410.

[0048] The first steering device 410 is used to drive the driving wheel group 310 to cut into the external track.

[0049] The driving wheel group 310 is connected to the support 100 through the first steering device 410.

[0050] The driven wheel group 320 is connected to the support 100.

[0051] The driving wheel group 310 is connected to the support 100 through the first steering device 410, which can adjust the angle and position of cutting into the track as needed, enabling quick and smooth switching from a highway to a track. The driven wheel group 320 is connected to the support 100, which can follow the actions of the driving wheel group 310 to maintain stable driving on the track. The first steering device 410 precisely controls the angle and position of the driving wheel group 310 cutting into the track, reducing travel interruptions and waiting time caused by road condition changes between highways and railways, avoiding safety hazards caused by improper switching, and reducing wear and tear on each wheel group, extending the service life of the vehicle.

[0052] Due to the possibility of encountering uneven or very complex road conditions during actual driving, the height of the ground may also change constantly. To ensure that the driving wheel group 310 and the driven wheel group 320 can stably support the entire device and accurately guide on the track, the driving wheel group 310 and the driven wheel group 320 each include:

[0053] A pair of track guide wheels 330;

[0054] A first shaft 331 connects two track guide wheels 330 at both ends, which, through the cooperation of the first shaft 331 and the track guide wheels 330, provides stable support and precise guidance for vehicles driving on the track, reducing faults and damage caused by bumps or deviations from the track.

[0055] A first horizontal rod 332 is used to connect with the support 100 or the first steering device 410;

[0056] A first telescopic assembly 333 is used to connect the first rotating shaft 331 with the first horizontal rod 332, so that the driving wheel set 310 and the driven wheel set 320 can be telescoped and adjusted to a certain extent, which can cope with different ground heights and help the equipment to maintain the best running state under different working environments and load requirements, thereby improving the adaptability and flexibility of the equipment.

[0057] To realize the flexible adjustment of the driving wheel set 310 and the driven wheel set 320 in the vertical plane and further ensure stable driving on road surfaces of different heights, the first telescopic assembly 333 of the track wheel set 300 is a pair of first telescopic support rods 3331, which are spaced apart and connected at one end with the first horizontal rod 332 and at the other end with the first rotating shaft 332. By adjusting the length of the first telescopic support rods 3331, the relative position between the first rotating shaft 331 and the first horizontal rod 232 can be controlled, thereby ensuring stable operation of the wheel set and helping to reduce the overall size and weight of the equipment and improve the compactness and space utilization of the structure.

[0058] The first telescopic support rods 3331 are arranged obliquely so that the first rotating shaft 331 and the first horizontal rod 332 are parallel to each other and in different vertical planes. The obliquely arranged first telescopic support rods 3331 can better adapt to the curvature and inclination of the track, thereby optimizing the power transmission and braking effect.

[0059] To optimize highway driving, the front wheel set 210 and the rear wheel set 220 respectively include:

[0060] A pair of highway driving wheels 230;

[0061] A second rotating shaft 231 is connected at both ends with two highway driving wheels 230, has a low rolling resistance and good grip, and improves the overall safety of the vehicle, which can remain stable during high-speed driving or in the event of an emergency.

[0062] A second horizontal rod 232 is used to connect with the support 100, which enhances the structural strength of the vehicle to enable the vehicle to remain stable during high-speed driving or in the event of an emergency.

[0063] The second telescopic assembly 233 is connected with the second horizontal rod 232 through the second rotating shaft 231, and has an adjusting function, so that the front wheel group 210 and the rear wheel group 220 can be adjusted in height and angle to a certain extent, and the driving performance is optimized.

[0064] In order to make the vehicle more adaptable to complex ground, the second telescopic assembly 233 is a pair of second telescopic support rods 2331, which are spaced apart and connected with the second horizontal rod 232 at one end and with the second rotating shaft 231 at the other end.

[0065] The second telescopic support rods 2331 are inclined to make the second rotating shaft 231 and the second horizontal rod 232 parallel to each other and in different vertical planes. By adjusting the length of the second telescopic support rods 2331, the height and angle of the second rotating shaft 231 relative to the second horizontal rod 232 can be flexibly changed. The second telescopic support rods 2331 are inclined to optimize the ground adhesion and rolling resistance, and together ensure the structural stability of the entire wheel group, improve the driving efficiency, and reduce the risk of shaking and losing control due to uneven road surface.

[0066] The second rotating shaft 231 is provided with a damping device 2311 for absorbing and buffering the vibration from the road surface, reducing the shaking and deviation of the vehicle, and helping to improve the handling performance of the vehicle and prevent damage to vehicle parts caused by long-term vibration and impact.

[0067] The switching assembly 400 further comprises a steering lifting platform 420, the steering wheel group 230 being connected with the support 100 through the steering lifting platform 420, the steering lifting platform 420 being used for controlling the steering wheel group 230 to perform steering operation and adjusting the height and angle of the steering wheel group 230.

[0068] The steering lifting platform 420 comprises a housing 421, a lifting mechanism 422 arranged in the housing 421, and a rotating mechanism 423 arranged below the lifting mechanism 422.

Claims

1. A fire fighting vehicle on / off rail conversion device, characterized in that, Comprise: a support, a plurality of road wheel sets and a plurality of track wheel sets arranged on the support, and a switching assembly for switching the road wheel sets and the track wheel sets; the switching assembly is connected with the road wheel sets and the track wheel sets respectively; the road wheel sets comprise: a front wheel set, a rear wheel set, and a steering wheel set arranged between the front wheel set and the rear wheel set; the track wheel sets are arranged between the front wheel set and the steering wheel set, and / or the track wheel sets are arranged between the rear wheel set and the steering wheel set.

2. The rail switching device for fire vehicles according to claim 1, wherein: the track wheel sets comprise: a driving wheel set and a driven wheel set, and the switching assembly comprises a first steering device; the first steering device is used to drive the driving wheel set to cut into the external track; the driving wheel set is rotatably connected with the support through the first steering device; the driven wheel set is rotatably connected with the support.

3. The rail switching device for fire vehicles according to claim 2, wherein: the driving wheel set and the driven wheel set respectively comprise: a pair of track guide wheels; a first rotating shaft, two ends of which are respectively connected with two track guide wheels; a first cross bar, which is used to be connected with the support or the first steering device; a first telescopic assembly, through which the first rotating shaft is connected with the first cross bar.

4. The rail switching device for fire vehicles according to claim 3, wherein: the first telescopic assembly is a pair of first telescopic support rods, which are spaced apart and one end of which is connected with the first cross bar and the other end of which is connected with the first rotating shaft; the first telescopic support rods are arranged obliquely so that the first rotating shaft and the first cross bar are parallel to each other and in different vertical planes.

5. The rail switching device for fire vehicles according to claim 1, wherein: the front wheel set and the rear wheel set respectively comprise: a pair of road running wheels; a second rotating shaft, two ends of which are respectively connected with two road running wheels; a second cross bar, which is used to be connected with the support; a second telescopic assembly, through which the second rotating shaft is connected with the second cross bar.

6. The rail switching device for fire vehicles according to claim 5, wherein: the second telescopic assembly is a pair of second telescopic support rods, which are spaced apart and one end of which is connected with the second cross bar and the other end of which is connected with the second rotating shaft; the second telescopic support rods are arranged obliquely so that the second rotating shaft and the second cross bar are parallel to each other and in different vertical planes.

7. A rail transfer device for a fire vehicle as claimed in claim 5, wherein, a damping device is arranged on the second rotating shaft.

8. A rail switching device for a fire vehicle according to any one of claims 1 to 7, characterized in that, the switching assembly further comprises a steering lifting platform, through which the steering wheel set is connected with the support.

9. The rail switching device for fire vehicles according to claim 8, wherein: the steering lifting platform comprises: a housing, a lifting mechanism arranged in the housing, and a rotating mechanism arranged below the lifting mechanism.

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