CN209337890U - A kind of air-expanding shaft automatic inflating linkage safety device and its air-expanding shaft wrap-up - Google Patents

Abstract

The utility model relates to field of mechanical technique, for the machine just booting operation in the case where fastening material is inflated in no completion for solving existing air-expanding shaft, cause security hidden trouble, the utility model provides a kind of air-expanding shaft automatic inflating linkage safety device, and the air-expanding shaft automatic inflating linkage safety device includes the compressed air source unit of air charging system and offer gas source；Gas ducting is connected between the compressed air source unit and air charging system, the gas ducting is equipped with the first control valve, and pressure sensor is equipped between first control valve and air charging system；The air charging system, pressure sensor and the first control valve are electrically connected with engine control system.Compared with prior art, the utility model has the beneficial effect that the one-touch starting for being able to achieve air-expanding shaft wrap-up, it realizes automatic inflating, just will start operating after air-expanding shaft inflation is qualified, effectively avoid security risk caused by causing material to shake due to under-inflation.

Description

A kind of air-expanding shaft automatic inflating linkage safety device and its air-expanding shaft wrap-up

Technical field

The utility model relates to field of mechanical technique, more particularly, to a kind of air-expanding shaft automatic inflating linkage safety dress It sets and its air-expanding shaft wrap-up.

Background technique

Air-expanding shaft is the special winding of one kind, unreeling shaft, that is, can be put by high-pressure aerated rear surface with the axis of protrusion The axis that gas rear surface part retracts rapidly.Though air-expanding shaft call is more, working principle is all identical, the component outside needs locking When (such as round paper tube), it is only necessary to which air gun completes inflation against the gas nozzle on air-expanding shaft, is withstood by part outstanding outer The component in portion when needing to loosen discharging, presses the sliding gaseous core on gas nozzle with hand and deflates, protrusion is fallen, so that it may Remove the component outside air-expanding shaft.

Air-expanding shaft it is extremely easy to use, quick, only need to provide gas source for oneself, control its internal pressure and achieve that its function, Thus, the purposes of air-expanding shaft is very extensive, all applicable air-expanding shafts for having winding to unreel machine.But at present for inflatable Material core is typically first inserted into air-expanding shaft, is then inflated to air-expanding shaft by the application of axis, is just entered after the completion of inflation and is opened Machine production, after the completion of production, then by manually deflating to air-expanding shaft Manual press gas nozzle, finally extracts material core out.In this way Inevitably deposit problem both ways: on the one hand, manual inflation is difficult to ensure the time and the blowing pressure of inflation, especially because Manual operation forgets that inflation just boots up production sometimes, will lead to material core in this way and do not fasten with air-expanding shaft, gently then shadow Production is rung, quality problems occurs, it is heavy then cause personal safety thing because material shakes (partial material weight is up to one ton) greatly again Therefore；On the other hand, it is completed due to inflation/deflation by manual operation, has aggravated working strength significantly, reduce production efficiency.

Utility model content

The utility model is intended to overcome at least one defect of the above-mentioned prior art, provides a kind of air-expanding shaft automatic inflating connection Dynamic safety device, for solving the just booting operation in the case where fastening material is inflated in no completion of the machine equipped with air-expanding shaft, Cause security hidden trouble.

The technical scheme adopted by the utility model is that:

A kind of air-expanding shaft automatic inflating linkage safety device, it is described for realizing the ventilating control of air-expanding shaft wrap-up Air-expanding shaft wrap-up includes air-expanding shaft, and the gas nozzle of air-expanding shaft end is arranged in and drives starting for the air-expanding shaft rotary work Machine control system, air-expanding shaft automatic inflating linkage safety device include be arranged in gas nozzle side for being inflated to air-expanding shaft Air charging system and provide gas source compressed air source unit；It is connected to gas ducting between the compressed air source unit and air charging system, for real Existing circulation of the gas from the compressed air source unit to air-expanding shaft, the gas ducting are equipped with the first control valve, first control Pressure sensor is equipped between valve and air charging system processed；The air charging system, pressure sensor and the first control valve are equal It is electrically connected with engine control system.

Specifically, the engine uses servo motor, since servo motor is to control mechanical organ fortune in servo-system The engine turned, is a kind of indirect speed change gear of subsidy motor, can make to control speed, position precision is very accurate, corresponding Engine control system can convert voltage signal to torque and revolving speed with drive control object, have the characteristics that rapid reaction, As executive component in automatic control system, have the advantages that electromechanical time constant is small, the linearity is high, and at low cost.

In the utility model, the air charging system that the air-expanding shaft automatic inflating linkage safety device uses be may be implemented to gas The automatic inflating of swelling shaft；Pressure sensor is set, it can be ensured that the stabilization of the blowing pressure avoids inflation excessive or under-inflation The phenomenon that causing gas source to waste or cannot achieve clamping material；The air charging system is electrically connected with engine control system, only After the air-expanding shaft completes inflation, and inflation reaches Eligibility requirements, the engine control system just will start air-expanding shaft operating Work.To sum up, the utility model also may be implemented to be equipped with air-expanding shaft automatic inflating linkage safety device using this structure The one-touch starting of air-expanding shaft wrap-up when needing to carry out production operation using the inflatable shaft device, need to only open described The control switch of engine control system, engine control system controls first control valve and opens, so that compressed air source unit Interior gas enters air charging system and is inflated to air-expanding shaft, after the only described pressure sensor detects that the blowing pressure is qualified, The engine control system just will start the air-expanding shaft operating, effectively avoid that material shaking is caused to cause due to under-inflation Security risk.

Further, the air charging system includes the gas head that can be docked with the gas nozzle and for doing the gas head back and forth Mobile power device, the gas head and gas ducting are connected, and the power device is electrically connected with engine control system.Specifically , when the air charging system needs to be inflated air-expanding shaft, the gas head protrudes under the action of power device Air-expanding shaft is inflated in gas nozzle, after inflation, the gas head retracts under the action of power device exit gas nozzle again Complete inflation.

Further, the air charging system is in air cylinder structure, including cylinder barrel, be arranged in the piston in cylinder barrel and one end with The piston rod of the piston connection, the cylinder barrel side are equipped with the first admission line for being located at piston two sides and the second inflation Pipeline, first admission line and the second gas ducting are respectively used to realize the flexible of piston rod；The piston rod is along axis Direction is equipped with hollow pipeline, and the other end of piston rod is equipped with the check valve of central tube；The central tube of the piston rod with fill Feed channel is connected.Specifically, in the utility model, the air charging system is in air cylinder structure, during piston rod is equipped in the axial direction Vacant duct, the end of piston rod are equipped with the check valve of central tube, this one end is inflated the air-expanding shaft as gas head, gas The openable check valve of the gas nozzle of swelling shaft, when gas head reaches the gas nozzle position of air-expanding shaft, check valve is automatically opened, and is realized Inflation, when it is retracted away from the gas nozzle of air-expanding shaft, check valve is automatically closed, and stops inflation, and cylinder piston two sides separate, at this time If the first admission line has gas source entrance, piston rod stretches out, if the second gas ducting has gas source entrance, piston rod is retracted, so Back and forth, the reciprocating movement for realizing gas head, since the piston rod and gas ducting are connected, when the piston rod entrance as gas head At the gas nozzle of air-expanding shaft, the mobile stopping of piston rod, inflation starts.This structure is simple and convenient and practical.

Further, the piston is being equipped with the through-hole connected with the hollow pipeline, institute with the link position of piston rod Gas ducting is stated to communicate with the rodless cavity of cylinder.In actual application, since the piston rod needs flexible reciprocating movement, it is The realization hollow pipeline and gas ducting stably turn on, and the utility model uses this structure, when the piston rod is stretched When entering at the gas nozzle of air-expanding shaft, piston rod stops movement, and first control valve is opened, so that in the compressed air source unit Gas enters the rodless cavity of cylinder from gas ducting, then out of, through-hole enters the piston rod hollow pipeline, finally enters gas Swelling shaft realizes inflation.

Further, first admission line and the second gas ducting are connected with the compressed air source unit；First air inlet The second control valve, second control valve and engine are equipped between pipeline and the second gas ducting and the compressed air source unit Control system electrical connection, it is described to realize that the second control valve is used to control the air inlet of the first admission line and the second gas ducting Piston rod stretches.In the utility model, in order to realize the automatic inflating to the air-expanding shaft, it is necessary to realize to as gas head The control of the telescopic moving of piston rod, after the engine control system is activated, the second control valve of control makes the One admission line has gas source entrance, and piston stretches out, and when the engine control system is closed, the second control valve of control makes Obtaining the second gas ducting has gas source entrance, and piston retracts.

Further, second control valve be two five-way electromagnetic valves, respectively with compressed air source unit, the first air inlet pipe Road, the second gas ducting and two gas vents are connected.In the utility model, in order to realize stretching to the piston rod as gas head Contracting movement needs to realize the alternative expression inflation to the first admission line and the second gas ducting, and two five-way electromagnetic valves can be real Existing this function, specifically, two five-way electromagnetic valves have a common inlet pressure source, i.e. compressed air source unit and two A exhaust outlet allows to be vented from valve, i.e. each outlet of the first admission line and the second gas ducting is individually controlled.It adopts It is simple with two five-way electromagnetic valve energy structures, it is easy to control and at low cost.

Further, the air-expanding shaft automatic inflating linkage safety device further includes unloading feed channel, institute with what atmosphere was connected State and unload feed channel and the first control valve and connect, first control valve is two-position three way magnetic valve, respectively with compressed air source unit, It unloads feed channel and air charging system is connected.In the utility model, air-expanding shaft automatic inflating linkage safety device further include with What atmosphere was connected unloads feed channel, when the first control valve, which is opened to and unloads feed channel, to be connected, may be implemented to air-expanding shaft from Dynamic to unload gas, therefore, first control valve need to have an import two outlets, and the opening and closing of inlet and outlet facilitates control System, fine must can be realized using three-way magnetic valve, specifically, the compressed air source unit is communicated with import, air charging system with unload gas Pipeline is communicated with two outlets respectively.It can be remained turned-off for a long time using two-position three way magnetic valve or opening state, and use the longevity It orders longer.

Further, the air-expanding shaft automatic inflating linkage safety device further includes the rotation speed for detecting air-expanding shaft Velocity sensor, the velocity sensor is electrically connected with the first control valve and the second control valve.In the utility model, by After being stopped operating under control of the air-expanding shaft in the launching system, since inertia can also operate a period of time, in order to ensure Velocity sensor is arranged in safety in production, is only no more than safe speed in the rotation speed of air-expanding shaft, can directly be static When, just starting starting and unload pneumatic work, can stop rotating not yet to avoid in air-expanding shaft in this way, material is not removed and just unloads gas, The danger for causing material to shake with the air-expanding shaft operating of rotation.

Further, the compressed air source unit is air compressor machine.In the use of the new type, the compressed air source unit uses air compressor machine, can Directly to provide gas source power, only the directed flow of gas need to can be realized by opening tracheae, not have to the in addition setting pump housing It gives gas source one power, can effectively simplify structure, save the cost in this way.

A kind of air-expanding shaft wrap-up equipped with air-expanding shaft automatic inflating linkage safety device, the air-expanding shaft winding The axis center point position of the air-expanding shaft is arranged in the gas nozzle of device.The gas nozzle that the air-expanding shaft is arranged is arranged in axis center point It sets, when inflation, can uniformly realize inflation, realize the steady operating of machine.

Compared with prior art, the utility model has the following beneficial effects:

A kind of air-expanding shaft automatic inflating linkage safety device, the air charging system are electrically connected with generator system, only It states air-expanding shaft and completes inflation, the engine control system just will start air-expanding shaft operation, avoid and cause security risk； The pressure sensor being electrically connected with the generator system is set, when carrying out automatic charging, can be effectively controlled air-expanding shaft pressure Reach Eligibility requirements；The air charging system uses air cylinder structure, can effectively realize the telescopic moving and control of gas head, realize simultaneously Air-expanding shaft is inflated when the gas head stretches out；Feed channel is unloaded in setting, when needs shut down, when unloading material, and the engine Control system receives closing control, deflates to air-expanding shaft.One kind being equipped with air-expanding shaft automatic inflating linkage safety device Air-expanding shaft wrap-up, the axis center point position of the air-expanding shaft is arranged in the gas nozzle of the air-expanding shaft wrap-up, can It realizes homogenous charge, realizes the steady operating of machine, meanwhile, which has one-key start, automatic inflating, fortune The function of turning and deflate.To sum up, a kind of air-expanding shaft automatic inflating linkage safety device provided by the invention has structure simple, control System is convenient, safe and reliable effect.

Detailed description of the invention

Fig. 1 is the apparatus structure schematic diagram of the utility model.

Fig. 2 is the sectional view of the device of the utility model.

Specific embodiment

The utility model attached drawing only for illustration, should not be understood as limiting the present invention.In order to more preferable Illustrate following embodiment, the certain components of attached drawing have omission, zoom in or out, and do not represent the size of actual product；For this For the technical staff of field, the omitting of some known structures and their instructions in the attached drawings are understandable.

Embodiment 1

As depicted in figs. 1 and 2, a kind of air-expanding shaft automatic inflating linkage safety device is present embodiments provided, for realizing The ventilating control of air-expanding shaft wrap-up, the air-expanding shaft wrap-up include air-expanding shaft 70, and 70 end of air-expanding shaft is arranged in Gas nozzle 71 and the engine control system 80 for driving 70 rotary work of air-expanding shaft, the air-expanding shaft automatic inflating linkage safety Device includes the compressed air source unit that the air charging system 20 and offer gas source for inflating to air-expanding shaft 70 of 71 side of gas nozzle is arranged in 10；Be connected to gas ducting between the compressed air source unit 10 and air charging system 20, for realizing gas from the compressed air source unit 10 to The circulation of air-expanding shaft 70, the gas ducting are equipped with the first control valve 30, first control valve 30 and air charging system Pressure sensor 40 is equipped between 20；The air charging system 20, pressure sensor 40 and the first control valve 30 with start Machine control system 80 is electrically connected.

Specifically, engine 90 uses servo motor.In the specific use process, it needs to wind using the air-expanding shaft and fill When setting, the corresponding engine control system 80 of engine is opened, engine control system 80 controls first control valve 30 It opens, so that compressed air source unit 10 is communicated with air charging system 20, pressure sensor 40 has detected the pressure of the air-expanding shaft 70, works as institute Insufficient pressure in air-expanding shaft 70 is stated, the air charging system 20 is inflated air-expanding shaft 70, when pressure abundance, that is, has completed to fill Gas, engine control system 80 starts, so that 70 operation of the air-expanding shaft.In the utility model, the only described air-expanding shaft After 70 complete inflation, and inflation reaches Eligibility requirements, the engine control system 80 just will start 70 operation of air-expanding shaft Effectively avoid security risk caused by causing material to shake due to under-inflation.

Further, the air charging system 20 includes the gas head 21 that can dock with the gas nozzle 71 and for making the gas head 21 power devices to reciprocatingly move, the gas head 21 are connected with gas ducting, the power device and engine control system 80 electrical connections.

In the specific course of work, when the air charging system 20 needs to be inflated air-expanding shaft 70, the gas head 21 protrude into gas nozzle 71 under the action of power device and are inflated to air-expanding shaft 70, after inflation, the gas First 21 again under the action of power device retract exit gas nozzle 71 complete inflation.

Further, the air charging system 20 is in air cylinder structure, including cylinder barrel, and the piston in cylinder barrel and one end is arranged in The piston rod connecting with the piston, the cylinder barrel side are equipped with the first admission line 22 and second for being located at piston two sides Gas ducting 23, first admission line 22 and the second gas ducting 23 are respectively used to realize the flexible of piston rod；The work Stopper rod is equipped with hollow pipeline in the axial direction, and the other end of piston rod is equipped with the check valve of central tube；In the piston rod Heart pipeline and gas ducting are connected.

In actual operation, the air charging system 20 is in air cylinder structure, and piston rod is equipped with hollow pipeline in the axial direction, living The end of stopper rod is equipped with the check valve of central tube, this one end is inflated the air-expanding shaft 70 as gas head 21, when it is stretched When arriving 71 position of gas nozzle of air-expanding shaft 70 out, check valve is automatically opened, and inflation is realized, when it is retracted away from the gas nozzle of air-expanding shaft 70 When 71, check valve is automatically closed, and stops inflation, and cylinder piston two sides separate, if the first admission line 22 has gas source entrance at this time, Piston rod stretches out, if the second gas ducting 23 has gas source entrance, piston rod is retracted, and and so on, realizes the reciprocal of gas head 21 It is mobile, since the piston rod and gas ducting are connected, at the gas nozzle 71 that the piston rod as gas head 21 enters air-expanding shaft 70, The mobile stopping of piston rod, inflation start.This structure is simple and convenient and practical.

Since the piston rod needs flexible reciprocating movement, in order to realize that the stabilization of the hollow pipeline and gas ducting connects Logical, in the utility model, the piston is being equipped with the through-hole connected with the hollow pipeline with the link position of piston rod, described Gas ducting is communicated with the rodless cavity of cylinder.Using this structure, at the gas nozzle 71 that the piston rod extend into air-expanding shaft 70 When, piston rod stops movement, and first control valve 30 is opened, so that the gas in the compressed air source unit 10 is from gas ducting Into the rodless cavity of cylinder, then out of, through-hole enters the piston rod hollow pipeline, finally enters air-expanding shaft 70 and realize inflation.

Further, first admission line 22 and the second gas ducting 23 are connected with the compressed air source unit 10；The The second control valve 50, second control are equipped between one admission line 22 and the second gas ducting 23 and the compressed air source unit 10 Valve 50 processed is electrically connected with engine control system 80, and the second control valve 50 is filled for controlling the first admission line 22 and second The air inlet of feed channel 23 is to realize the flexible of the piston rod.In practical work process, when the engine control system 80 After being activated, the second control valve 50 of control makes the first admission line 22 have gas source entrance, and piston stretches out, starts when described Machine control system 80 is closed, and the second control valve 50 of control makes the second gas ducting 23 have gas source entrance, and piston retracts.

Further, second control valve 50 be two five-way electromagnetic valves, respectively with compressed air source unit 10, the first air inlet Pipeline 22, the second gas ducting 23 and two gas vents are connected.In the utility model, in order to realize to the work as gas head 21 The telescopic moving of stopper rod needs to realize the alternative expression inflation to the first admission line 22 and the second gas ducting 23, and two five logical This function may be implemented in solenoid valve, specifically, two five-way electromagnetic valves have a common inlet pressure source, i.e. gas Source device 10 and two exhaust outlets allow to be vented from valve, i.e. each outlet of the first admission line 22 and the second gas ducting 23 Individually controlled.

Further, the air-expanding shaft automatic inflating linkage safety device further includes unloading feed channel 60 with what atmosphere was connected, Feed channel 60 and first control valve 30 of unloading is connected, and first control valve 30 is two-position three way magnetic valve, respectively with Compressed air source unit 10 unloads feed channel 60 and the connection of air charging system 20.In the utility model, the two-position three way magnetic valve has one Air charging system 20 and feed channel 60 is unloaded respectively with two specifically, the compressed air source unit 10 is communicated with import in a import two outlets A outlet communicates, and when the first control valve 30, which is opened to and unloads feed channel 60, to be connected, may be implemented to the automatic of air-expanding shaft 70 Gas is unloaded, when the first control valve 30, which is opened to, to be connected with compressed air source unit 10, the automatic inflating to air-expanding shaft 70 may be implemented.

Further, the air-expanding shaft automatic inflating linkage safety device further includes the rotation speed for detecting air-expanding shaft 70 The velocity sensor of degree, the velocity sensor are electrically connected with the first control valve 30 and the second control valve 50.

Specifically, when engine control system 80 receives stopping control, rotation of the velocity sensor to air-expanding shaft 70 Speed is detected, and when its speed is zero, or is not higher than safety value, then control the first control valve 30 and the second control valve 50, make to bring about the desired sensation and first 21 protrude into the gas nozzle 71 of air-expanding shaft 70 and connected with feed channel 60 is unloaded, realizes and deflate.

Further, the compressed air source unit 10 is air compressor machine.

A kind of air-expanding shaft wrap-up equipped with air-expanding shaft automatic inflating linkage safety device, the air-expanding shaft winding The axis center point position of the air-expanding shaft 70 is arranged in the gas nozzle 71 of device.

Embodiment 2

As shown in Fig. 2, a kind of air-expanding shaft automatic inflating linkage safety device is present embodiments provided, for realizing air-expanding shaft The ventilating control of wrap-up, the air-expanding shaft wrap-up include air-expanding shaft 70, and the gas nozzle 71 of 70 end of air-expanding shaft is arranged in With the engine control system 80 for driving 70 rotary work of air-expanding shaft, the air-expanding shaft automatic inflating linkage safety device packet Include the compressed air source unit 10 that the air charging system 20 and offer gas source for inflating to air-expanding shaft 70 of 71 side of gas nozzle are set；It is described It is connected to gas ducting between compressed air source unit 10 and air charging system 20, for realizing gas from the compressed air source unit 10 to air-expanding shaft 70 Circulation, the gas ducting be equipped with the first control valve 30, set between first control valve 30 and air charging system 20 There is pressure sensor 40；The air charging system 20, pressure sensor 40 and the first control valve 30 are and engine control system 80 electrical connection of system.

Specifically, the engine 90 uses servo motor.In the specific use process, it needs to receive using the air-expanding shaft When winding apparatus, the engine control system 80 is opened, engine control system 80 controls first control valve 30 and opens, So that compressed air source unit 10 is communicated with air charging system 20, pressure sensor 40 has detected the pressure of the air-expanding shaft 70, when the gas Insufficient pressure in swelling shaft 70, the air charging system 20 are inflated air-expanding shaft 70, when pressure abundance, that is, have completed to inflate, Engine control system 80 starts, so that 70 operation of the air-expanding shaft.In the utility model, the only described air-expanding shaft 70 is complete At inflation, and after inflation reaches Eligibility requirements, it is effective that the engine control system 80 just will start 70 operation of air-expanding shaft Avoid security risk caused by causing material to shake due to under-inflation.

Further, the air charging system 20 includes the gas head 21 that can dock with the gas nozzle 71 and for making the gas head 21 power devices to reciprocatingly move, the gas head 21 are connected with gas ducting, the power device and engine control system 80 electrical connections.

In the specific course of work, when the air charging system 20 needs to be inflated air-expanding shaft 70, the gas head 21 protrude into gas nozzle 71 under the action of power device and are inflated to air-expanding shaft 70, after inflation, the gas First 21 again under the action of power device retract exit gas nozzle 71 complete inflation.

Further, the air-expanding shaft automatic inflating linkage safety device further includes unloading feed channel 60 with what atmosphere was connected, Feed channel 60 and first control valve 30 of unloading is connected, and first control valve 30 is two-position three way magnetic valve, respectively with Compressed air source unit 10 unloads feed channel 60 and the connection of air charging system 20.In the utility model, the two-position three way magnetic valve has one Air charging system 20 and feed channel 60 is unloaded respectively with two specifically, the compressed air source unit 10 is communicated with import in a import two outlets A outlet communicates, and when the first control valve 30, which is opened to and unloads feed channel 60, to be connected, may be implemented to the automatic of air-expanding shaft 70 Gas is unloaded, when the first control valve 30, which is opened to, to be connected with compressed air source unit 10, the automatic inflating to air-expanding shaft 70 may be implemented.

Further, the compressed air source unit 10 is air compressor machine.

A kind of air-expanding shaft wrap-up equipped with air-expanding shaft automatic inflating linkage safety device, the air-expanding shaft winding The axis center point position of the air-expanding shaft 70 is arranged in the gas nozzle 71 of device.

Obviously, the above embodiments of the present invention is only intended to clearly illustrate made by technical solutions of the utility model Citing, and it is not the restriction to specific embodiment of the present utility model.All spirit in the utility model claims book With any modifications, equivalent replacements, and improvements made within principle etc., the protection of the utility model claims should be included in Within the scope of.

Claims (10)

1. Safety device, for realizing the ventilating control of air-expanding shaft wrap-up, the gas 1. a kind of air-expanding shaft automatic inflating links Swelling shaft wrap-up includes air-expanding shaft, and the gas nozzle of air-expanding shaft end is arranged in and drives the engine of the air-expanding shaft rotary work Control system, which is characterized in that air-expanding shaft automatic inflating linkage safety device include be arranged in gas nozzle side for pair The air charging system of air-expanding shaft inflation and the compressed air source unit of offer gas source；Gas tube is connected between the compressed air source unit and air charging system Road, the circulation for realizing gas from the compressed air source unit to air-expanding shaft, the gas ducting are equipped with the first control valve, institute It states and is equipped with pressure sensor between the first control valve and air charging system；The air charging system, pressure sensor and the first control Valve processed is electrically connected with engine control system.
2. The safety device 2. a kind of air-expanding shaft automatic inflating according to claim 1 links, which is characterized in that the inflation dress Set the gas head including that can dock with the gas nozzle and the power device for making the gas head reciprocatingly move, the gas head with fill Feed channel is connected, and the power device is electrically connected with engine control system.
3. The safety device 3. a kind of air-expanding shaft automatic inflating according to claim 1 links, which is characterized in that the inflation dress It sets in air cylinder structure, including cylinder barrel, the piston rod that the piston and one end being arranged in cylinder barrel are connect with the piston, the cylinder Cylinder side is equipped with the first admission line and the second gas ducting for being located at piston two sides, first admission line and second Gas ducting is respectively used to realize the flexible of piston rod；The piston rod is equipped with hollow pipeline in the axial direction, piston rod it is another One end is equipped with the check valve of central tube；The hollow pipeline and gas ducting of the piston rod are connected.
4. The safety device 4. a kind of air-expanding shaft automatic inflating according to claim 3 links, which is characterized in that the piston exists The through-hole connected with the hollow pipeline, the rodless cavity phase of the gas ducting and cylinder are equipped with the link position of piston rod It is logical.
5. The safety device 5. a kind of air-expanding shaft automatic inflating according to claim 3 or 4 links, which is characterized in that described the One admission line and the second gas ducting are connected with the compressed air source unit；First admission line and the second gas ducting with it is described The second control valve is equipped between compressed air source unit, second control valve is electrically connected with engine control system, the second control Valve is used to control the air inlet of the first admission line and the second gas ducting to realize the flexible of the piston rod.
6. The safety device 6. a kind of air-expanding shaft automatic inflating according to claim 5 links, which is characterized in that second control Valve processed be two five-way electromagnetic valves, respectively with compressed air source unit, the first admission line, the second gas ducting and two gas vents It connects.
7. The safety device 7. a kind of air-expanding shaft automatic inflating according to claim 1 links, which is characterized in that the air-expanding shaft Automatic inflating linkage safety device further includes the feed channel of unloading connected with atmosphere, described to unload feed channel and the connection of the first valve, institute Stating the first control valve is two-position three way magnetic valve, respectively with compressed air source unit, unload feed channel and air charging system and connect.
8. The safety device 8. a kind of air-expanding shaft automatic inflating according to claim 7 links, which is characterized in that the air-expanding shaft Automatic inflating linkage safety device further includes the velocity sensor for detecting the rotation speed of air-expanding shaft, the velocity sensor It is electrically connected with the first control valve and the second control valve.
9. The safety device 9. a kind of air-expanding shaft automatic inflating according to claim 8 links, which is characterized in that the gas source dress It is set to air compressor machine.
10. 10. a kind of air-expanding shaft equipped with air-expanding shaft automatic inflating as described in any one of claim 1 to 9 linkage safety device is received Winding apparatus, which is characterized in that the axis center point position of the air-expanding shaft is arranged in the gas nozzle of the air-expanding shaft wrap-up.