CN100386220C - Safe gas charging connection - Google Patents

Abstract

The present invention discloses a safe gas charging joint. In the present invention, a sleeve barrel with the length less than that of a sleeve pipe is screwed in the sleeve pipe with inner screw threads, a sliding column with steps can be slidingly arranged in the inner hole of the sleeve barrel, the center of the sliding column is provided with a blind hole arranged along the length direction of the sliding column, and the bottom end of the blind hole is provided with a transverse hole communicated with the blind hole; when the steps of the sliding column lean against the end surface of the sleeve barrel, the transverse hole is exposed outside the end surface of the other end of the sleeve barrel; one end of the sleeve pipe is screwed on the gas nozzle of the gas zone of a gas source, and the other end is screwed on a tyre gas nozzle; because gas is discharged from the transverse hole via the blind hole in the center of the sliding column, the sliding column pushes away a valve core so as to charge gas without needing people to push a gas compressing nozzle; even if the valve core ejects because the valve core can not bear high gas pressure, the valve core can not fly out to hurt people; manpower is saved, the work that a plurality of tyres are inflated, which needs to be done laboriously and originally by three to four people, can be completed only by one people at present, and the sleeve pipe is only screwed or disassembled on the gas nozzle on one side of a tyre; the joint has the advantages of simple structure, low manufacture cost, easy use, low labor intensity, high efficiency and high safety and reliability.

Description

Safe gas-charging connection

Technical field

The invention belongs to gas-charging connection, specifically a kind of at source of the gas during to airbag aeration, can make the joint that safety is joined between the valve at two ends.

Background technology

When giving the airbag aeration of carrying weight, for example giving the inflation of tires such as the large-scale load transportation vehicle of usefulness, lifting vehicle at harbour, generally is with starting air-pump inflating again on the valve that manually valve of source of the gas is pressed in air bag.The shortcoming of this aeration is: when the needed inflation pressure of air bag bigger, bigger as the required air pressure of large-scale transport vehicle tire, strength by 1 people can not be pushed down valve, often to hand inflating nozzle be pressed on the valve of tire jointly with 3-4 people, the air pressure required owing to tire is big, so also is difficult to gas is charged to enough pressure; The spool of the air inlet non-return valve of installing on the cranked tire valve on the other hand is less, the strength at repeated alternation that period of service has been grown itself reduces, because of the air pressure in the tire is easy to greatly be flown by pneumatic jack when inflating, the spool strength that flies out usually makes the people by valve injure because of hiding the untimely spool that is flown out as the bullet that goes out thorax.

Summary of the invention

For tire of solving large-scale bogie etc. holds heavily stressed airbag aeration difficulty, and the non-return valve spool of, inlet end big because of air pressure is easily taken off problem such as hurt sb.'s feelings by pneumatic jack because of fatigue, technical scheme of the present invention is: in a tapped sleeve pipe, length is installed less than the externally threaded sleeve of cover pipe racks, traveller with the level is contained in the sleeve endoporus slidably, the center of traveller is provided with the blind hole along the traveller length direction, the bottom of blind hole has the one or more cross-drilled holes that communicate with it, when the step of traveller leaned against sleeve end face, cross-drilled hole was exposed at outside the end face of the sleeve other end; On the end face of described sleeve, can be provided with the socket of plugging in the instrument of twisting.

During use, one end of sleeve pipe is screwed on the valve of the source of the gas band of gas, and the other end is screwed on the air bag valves such as tire, during no air pressure, the non-return valve spool termination that the termination of nearly cross-drilled hole one end of traveller leans against in the cranked tire valve does not have pressure, and this moment, the step and the socket end of traveller were gapped.Open the connection for bbreather pipe of air pump, gas leads to cranked tire valve by sleeve pipe, traveller central blind hole, cross-drilled hole, because of gas flows out from cross-drilled hole, when air pressure reaches enough pressure, traveller is pushed to the spool direction by gas, the spool that leans against the traveller termination is open, gas feeds in tire with the position, gap in hole around spool, because of source of the gas valve and air bag valve all are to be connected with sleeve pipe by screw thread, need not personnel selection pushing valve, as long as when observing inflation pressure aside and reaching required gauge pressure value, close air pump and get final product, perhaps by automatic control device SELF CL air pump.Can't stand big air pressure At time of eject even if spool holds because of fatigue, casing pipe sleeve is arranged outside spool, also can not fly out and hurt sb.'s feelings, but also can save manpower, originally 3-4 people goes to great pains to do bad work, and present a plurality of inflation of tires only need one man operation.If air pump separately for airbag aeration usefulness, need not be backed out with source of the gas bonded assembly gas transmission band one end, the inflation of only sleeve pipe on the tyre side valve being screwed on is full of gas and unloads and get final product.Above-mentioned joint design is simple, and low cost of manufacture is easy to use, and labour intensity is low, work efficiency is high, and is safe and reliable.When being provided with the socket of plugging in the instrument of twisting on the end face at sleeve, insert socket with instrument, to twist the sleeve rotation sleeve is screwed into sleeve pipe, the position of regulating sleeve can adapt to the valve of different length on the different kinds of tyre.

Description of drawings

The invention will be further described below in conjunction with drawings and Examples.

Fig. 1 is a cutaway view of the present invention.

The specific embodiment

Among Fig. 1, in a tapped sleeve pipe 1, be screwed with and be with externally threaded sleeve 2, the length of sleeve 2 is less than the length of sleeve pipe 1, traveller 3 with the level is contained in the endoporus of sleeve 2 slidably, the center of traveller 3 band step ends is provided with blind hole 4, there is the cross-drilled hole 5 that communicates with it lower end of blind hole 4, described cross-drilled hole 5 can be the hole of opening to a side, it also can be horizontal through hole, or an end of a plurality of cross-drilled holes 5 all communicates with blind hole 4, and when the step of traveller 3 leaned against sleeve 2 end faces, the other end of blind hole 4 communicated with the inner chamber of sleeve pipe 1.Can enter for the termination that makes on the traveller 3 nearly cross-drilled hole 5 on the valve 7 top spools 6 within it of tire, be provided with the concentric column 10 of external diameter less than traveller 3 tops at this end of traveller 3.

For the ease of sleeve 2 is screwed in the sleeve pipe 1, also adjust the position of sleeve 2 in sleeve pipe 1 for the length of the valve 7 that adapts to different kinds of tyre, on the end face of sleeve 2, can be provided with the socket 9 of plugging in the instrument of twisting.

When needing inflation, source of the gas valve 8 is screwed in step one end of the nearly traveller 3 in the sleeve pipe 1, the valve 7 of tire is screwed in the other end (referring to imaginary line place among Fig. 1) of sleeve pipe 1, when the step of traveller 3 leans against the upper surface of sleeve 2, cross-drilled hole 5 just is exposed at beyond the lower end surface of sleeve 2, and just back down the spool on the cranked tire valve 76 bottom of traveller 3 simultaneously, just when inflation, the gas of band pressure is urged to the upper surface that its step leans against sleeve 2 with traveller 3, this moment, also just backed down spool 6 bottom of traveller 3, make between spool 6 and the valve opening and produce the gap, cross-drilled hole 5 on the traveller 3 also just is exposed at beyond the lower end surface of sleeve 2, and gas just can enter in the tire swimmingly like this.

Claims (1)

1. safe gas-charging connection, in a tapped sleeve pipe, length is installed less than the externally threaded sleeve of cover pipe racks, traveller with the level is contained in the sleeve endoporus slidably, the blind hole when center of traveller is provided with along the traveller length direction, the bottom of blind hole has the one or more cross-drilled holes that communicate with it, when the step of traveller leans against sleeve end face, cross-drilled hole is exposed at outside the end face of the sleeve other end, it is characterized in that: be provided with the socket of plugging in the instrument of twisting on the end face of sleeve.

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