The overhead natural gas steel bottle system of natural gas bus
Technical field
The present invention relates to a kind of overhead natural gas steel bottle system of natural gas bus.
Background technology
The existing compression natural gas passenger vehicle of China all adopts underneath type gas cylinder arrangement basically, exactly gas cylinder is hung on bottom of frame.But due to more and more higher to traveling comfort, the security requirement of passenger vehicle on current market, brought certain difficulty for the mounting design of gas cylinder.So overhead type gas cylinder arrangement just becomes one of approach that solves these difficult problems.Along with the application of overhead type gas cylinder arrangement, the fixing emphasis that becomes again people's research of the installation of overhead type gas cylinder moves because overhead gas cylinder can make on the center of gravity of car load, and fixed and arranged is bad, can cause the stability of car load to seriously influence.
At present, most of passenger vehicle producer is basic identical to the fixed solution of the fixed form of overhead type gas cylinder and underneath type, is fixed on the vehicle body top after adopting two semi-round carriages that gas cylinder is clamped.This structural entity quality is too heavy, and is higher to the requirement of strength of body framwork, makes that complete vehicle weight is excessive, the center of gravity of vehicle is too high, is unfavorable for running at high speed of vehicle, has a strong impact on the stability of vehicle.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of installation and maintenance is convenient, and is conducive to the overhead natural gas steel bottle system of natural gas bus of the road-holding property of vehicle.
In order to solve the problems of the technologies described above, technical scheme provided by the present invention is: a kind of overhead natural gas steel bottle system of natural gas bus comprises a plurality of natural gas steel cylinders and steel cylinder fixed mechanism; Described natural gas steel cylinder is fixed on the top of natural gas bus by the steel cylinder fixed mechanism; Described a plurality of natural gas steel cylinder is arranged side by side, and the placement direction of adjacent two natural gas steel cylinders is opposite.
Described steel cylinder fixed mechanism comprises carriage, anchor ear, band and latching device; Described natural gas steel cylinder is placed on carriage; One end of described anchor ear is connected an end and is connected with the carriage of natural gas steel cylinder both sides respectively with band; The other end of described anchor ear is connected by latching device with the other end of band.
The end that described anchor ear is connected with carriage is provided with the anchor ear suspension ring; The end that band is connected with carriage is provided with the little suspension ring of band; Be equipped with bearing pin in described anchor ear suspension ring and the little suspension ring of band; Described bearing pin is connected with pin shaft hole on carriage.
The end that described anchor ear is connected with latching device is provided with the anchor ear hanger, and the anchor ear hanger is provided with fixed orifice; The end that described band is connected with latching device is provided with the large suspension ring of band; Described latching device comprises screw rod, spiral spring cover, coil spring, screw rod unthreaded hole pin, nut, bolted cover and screw flight borehole jack; Described screw rod passes spiral spring cover, coil spring, screw rod unthreaded hole pin successively, then is threaded with nut, bolted cover, screw flight borehole jack successively; Described spiral spring cover covers coil spring; Described nuts and bolt adapter sleeve is locked at the bottom of screw rod in the screw flight borehole jack; Described screw rod unthreaded hole pin is connected with fixed orifice on the anchor ear hanger; Described screw flight borehole jack is connected with the large suspension ring of band.
Described pin shaft hole and fixed orifice are the cucurbit shape.
After having adopted technique scheme, the present invention has positive effect: (1) a plurality of natural gas steel cylinders of the present invention are arranged side by side, and the placement direction of adjacent two natural gas steel cylinders is opposite, this structure makes the transfer line of gas be arranged in respectively the two ends of natural gas steel cylinder, move towards complicated mixed and disorderly when having avoided pipeline to concentrate in together, the layout of whole supply air line is clear, takes full advantage of the space around the roof natural gas steel cylinder, the convenient installation and maintenance.
(2) bracket support is passed through in bottom of the present invention, top is fixed by anchor ear, band and latching device, and this structure has alleviated the weight of steel cylinder fixed mechanism greatly, and is low to the structural strength requirement of body framwork, the center of gravity of car load is moved on relatively less, is conducive to the road-holding property of vehicle.
(3) anchor ear of the present invention, band and latching device are fixed single natural gas steel cylinder, and this structure both can realize the independent dismounting to each gas cylinder, can satisfy the requirement of integral hoisting again simultaneously, make assembling more flexible.
(4) be provided with coil spring in latching device of the present invention, because the different youngsters of inner pressure or external temperature are when changing, helical spring predetermincd tension also changes and makes natural gas steel cylinder constantly be in the state of holding tightly when the external diameter of natural gas cylinder; In addition, coil spring can also absorb in the vehicle movement process the vibration influence of steel cylinder fixed mechanism, has avoided vibrations to be directly delivered on latching device, and latching device has been played protective effect, has extended the service life of latching device.
(5) pin shaft hole of the present invention and fixed orifice are the cucurbit shape, this structure makes the installation of bearing pin and screw rod unthreaded hole pin simpler, after assembling is completed, tighten up latching device, bearing pin and screw rod unthreaded hole pin can enter in the aperture of pin shaft hole and fixed orifice respectively automatically, thereby realize bearing pin and screw rod unthreaded hole pin automatic locking.
Description of drawings
Content of the present invention is easier to be expressly understood in order to make, and the below is according to specific embodiment and by reference to the accompanying drawings, and the present invention is further detailed explanation, wherein
Fig. 1 is structural representation of the present invention.
Fig. 2 is that single natural gas steel cylinder of the present invention is fixed on the structural representation on the steel cylinder fixed mechanism.
Fig. 3 is the structural representation of anchor ear of the present invention.
Fig. 4 is the structural representation of band of the present invention.
Fig. 5 is the structural representation of latching device of the present invention.
Label in accompanying drawing is:
Natural gas steel cylinder 1, steel cylinder fixed mechanism 2, carriage 21, pin shaft hole 211, anchor ear 22, anchor ear suspension ring 221, anchor ear hanger 222, fixed orifice 223, band 23, the little suspension ring 231 of band, the large suspension ring 232 of band, latching device 24, screw rod 241, spiral spring cover 242, coil spring 243, screw rod unthreaded hole pin 244, nut 245, bolted cover 246, screw flight borehole jack 247, bearing pin 25.
The specific embodiment
(embodiment 1)
See Fig. 1 to Fig. 5, the present embodiment comprises a plurality of natural gas steel cylinders 1 and steel cylinder fixed mechanism 2.
Natural gas steel cylinder 1 is fixed on the top of natural gas bus by steel cylinder fixed mechanism 2.A plurality of natural gas steel cylinders 1 are arranged side by side, and the placement direction of adjacent two natural gas steel cylinders 1 is opposite.This structure makes the transfer line of gas be arranged in respectively the two ends of natural gas steel cylinder 1, move towards complicated mixed and disorderly when having avoided pipeline to concentrate in together, the layout of whole supply air line is clear, takes full advantage of the space around roof natural gas steel cylinder 1, the convenient installation and maintenance.
Steel cylinder fixed mechanism 2 comprises carriage 21, anchor ear 22, band 23 and latching device 24.Natural gas steel cylinder 1 is placed on carriage 21; The end that one end of anchor ear 22 is connected with band is connected with the carriage 21 of natural gas steel cylinder 1 both sides respectively; The other end of anchor ear 22 is connected by latching device 24 with the other end of band 23.The end that anchor ear 22 is connected with carriage 21 is provided with anchor ear suspension ring 221; The end that band 23 is connected with carriage 21 is provided with the little suspension ring 231 of band; Be equipped with bearing pin 25 in the little suspension ring 231 of anchor ear suspension ring 221 and band; Bearing pin 25 is connected with pin shaft hole 211 on carriage 21.The end that anchor ear 22 is connected with latching device 24 is provided with anchor ear hanger 222, and anchor ear hanger 222 is provided with fixed orifice 223; The end that band 23 is connected with latching device 24 is provided with the large suspension ring 232 of band; Latching device 24 comprises screw rod 241, spiral spring cover 242, coil spring 243, screw rod unthreaded hole pin 244, nut 245, bolted cover 246 and screw flight borehole jack 247; Screw rod 241 passes spiral spring cover 242, coil spring 243, screw rod unthreaded hole pin 244 successively, then is threaded with nut 245, bolted cover 246, screw flight borehole jack 247 successively; Spiral spring cover 242 covers coil spring 243; Nut 245 and bolted are overlapped 246 bottoms with screw rod 241 and are locked in screw flight borehole jack 247; Screw rod unthreaded hole pin 244 is connected with fixed orifice 223 on anchor ear hanger 222; Screw flight borehole jack 247 is connected with the large suspension ring 232 of band.
Because the different youngsters of inner pressure or external temperature are when changing, the predetermincd tension of coil spring 242 also changes and makes natural gas steel cylinder 1 be in the state of holding tightly constantly when the external diameter of natural gas cylinder 1; In addition, coil spring 242 can also absorb in the vehicle movement process the vibration influence of steel cylinder fixed mechanism 2, has avoided vibrations to be directly delivered on latching device 24, and latching device 24 has been played protective effect, has extended the service life of latching device 24.
Pin shaft hole 211 and fixed orifice 223 are the cucurbit shape.After assembling is completed, tighten up latching device 24, bearing pin 25 and screw rod unthreaded hole pin 244 can enter respectively in the aperture of pin shaft hole 211 and fixed orifice 223 automatically, thereby realize bearing pin 25 and screw rod unthreaded hole pin 244 automatic lockings.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.