CN207634418U - A kind of manual big shovel gas exchange valve arrangement of tire changer - Google Patents

Abstract

The utility model discloses a kind of manual big shovel gas exchange valve arrangements of tire changer, the device on valve body by being arranged five threaded holes for being used as gas passage, the air valve skeleton of multiple circle ring column structures is set in valve body, there is O-ring seal among each two air valve skeleton, there is blow vent on air valve skeleton, there are two annular grooves of ventilating for setting on valve rod, during valve rod moves up and down, the different threaded holes on the selectable connection valve body of ventilation annular groove on valve rod, realize that the opening and closing of gas exchange valve arrangement work for the cylinder shoveled greatly on control tire changer.The device has simple in structure, is easy to be controlled with hand, easy to operate, the advantages that security performance is high.

Description

A kind of manual big shovel gas exchange valve arrangement of tire changer

Technical field

The utility model is related to a kind of manual big shovel gas exchange valve arrangements of tire changer.

Background technology

Tire changer first has to the automobile tire by long run on highway by shoveling greatly during tyre dismounting The tyre and rim being bonded together is shoveled into pine, so that tyre and rim is detached from, to carry out detaching tyre operation.Tire is torn open at present Installation tears tire control system majority open in tyre dismounting box body, using the big shovel reversal valve of foot-operated control.In shovel tire mistake Manual ratch fetal position is used in journey on one side, stretches one's legs control pedal reversal valve with foot-operated on one side, and another hand will also control big shovel Shovel board angle, it is difficult to operate, and leg lies across tire vertical position there are security risks.

Utility model content

A kind of manual big shovel gas exchange valve arrangement of tire changer of the utility model proposing in view of the above problems, the device It is fixed on the big shovel handle of tire changer, it is simple in structure, it is easy to realize tire with the cylinder that hand control drives big shovelman to make With the separation of wheel rim.

The technological means that the utility model uses is as follows：

A kind of manual big shovel gas exchange valve arrangement of tire changer, including hollow valve body, valve body lower end position in an axial direction Setting spaced set, there are five the first threaded holes being connected with valve inner, in five first threaded holes from bottom to top It is connected with the first relief valve, the first air inlet-outlet pipe connector, air source pipe fitting, the second air inlet-outlet pipe connector and the second pressure release in turn Valve sets the first air valve skeleton there are six circle ring column structure, institute successively from bottom to top in the axial direction in the valve inner The outer diameter for stating the first air valve skeleton is matched with the valve inner diameter, has first on the outer wall of the first air valve skeleton Annular groove has and the first air valve skeleton in the first annular groove along the first air valve skeleton radial direction The first through hole of internal diameter connection, is equipped with O-ring seal, in the valve body lower end portion between each two the first air valve skeleton It is fixed with the lower fixed seat for limiting the first air valve frame position, the lower fixed seat and the valve inner corresponding position With lower fixed seat through-hole, the lower fixed seat also has the first shovel for being connect with the spade shoveled greatly on tire changer Handle interconnecting piece is fixed with the locking spacer of circle ring column structure in the first air valve skeleton upper end of described valve inner the top, The outer diameter of the locking spacer is matched with the valve inner diameter, between the first air valve skeleton and the locking spacer O-ring seal, the locking spacer and the lower fixed seat are equipped with by the first air valve skeleton and O-ring seal limit in institute Stating in valve body prevents it from being axially moved, and the valve body upper end is fixed with upper fixed seat, and the gas exchange valve arrangement further includes being placed in Valve rod in the valve body and the switching device for switching the stem position, the valve rod include in the air valve skeleton The work department of diameter cooperation and the interconnecting piece for being connect with the switching device, are in axial direction disposed in the work department Two ventilation annular grooves, the ventilation annular groove is optionally by the relief valve, air inlet-outlet pipe connector and gas source pipe Connector switches on and off, and the switching device includes handle and pull rod, and the pull rod lower end is connect with the interconnecting piece of the valve rod, The pull rod upper end is flexibly connected with the handle, and the handle is articulated on fixed seat, and the handle passes through described Pull rod can drive the valve rod to move up and down, and fixed seat also has for connecting with the spade shoveled greatly on tire changer The the second spade interconnecting piece connect；

Further, the scavenging air valve further includes the resetting apparatus to automatically reset for the valve rod, the resetting apparatus Including upper pressure pad, resetting spring and lower pressure pad, the upper pressure pad and the lower pressure pad include outer diameter and the resetting spring internal diameter Matched spring holding section and spring retainer portion for limiting the resetting spring, the spring engaging of the upper and lower pressure pad The both ends of resetting spring are placed and are caught in portion in opposite directions, and the upper pressure pad and the lower pressure pad center, which have, supplies the valve rod interconnecting piece The pressure pad through-hole passed through, resetting apparatus assembly rear enclosure are placed in the locking spacer and described in the interconnecting piece of the valve rod In the cavity of valve inner between upper fixed seat；

Further, the ventilation annular groove both ends are equipped with tapered transitional；

Further, it is described locking spacer internal diameter be step structure, it is described locking spacer lower inner diameter with it is described The work department of valve rod matches, and the upper inner diameter of the locking spacer is more than the size of the work department of the valve rod；

Further, there is the first lock opening, fixed seat on the first spade interconnecting piece of the lower fixed seat The second spade interconnecting piece on have the second lock opening；

Further, further include upper casing and lower outer cover, the upper casing is fixed on fixed seat, described lower outer Cover is buckled on the valve body.

Compared with the prior art, the manual big shovel gas exchange valve arrangement of tire changer described in the utility model has with following Beneficial effect：1, the device has simple in structure, convenient for being controlled with hand, can realize easily and fast and manually control tire and wheel rim Shovel tire separation；2, there is the gas exchange valve arrangement automatic reset device, the control that can conveniently realize scavenging air valve to avoid changing In air valve not operating process, controls the cylinder conducting shoveled greatly and cause maloperation, ensure that the safe and reliable progress of shovel tire work；3、 The ventilation annular groove both ends of valve rod are equipped with tapered transitional, avoid stress concentration at the ventilation annular groove of valve rod, ensure The bonding strength of valve rod；4, the internal diameter of locking spacer is step structure, and its underpart internal diameter is matched with the work department of valve rod, Upper inner diameter is more than the size of the work department of valve rod, both ensures to lock the sealing performance between spacer and valve rod, while also reducing Required precision to the circularity and roughness of locking spacer internal diameter, reduces processing cost；5, the first spade of lower fixed seat There is interconnecting piece the first lock opening, the second spade interconnecting piece of upper fixed seat to have the second lock opening, be filled convenient for scavenging air valve The position set on big shovel is adjusted.

Description of the drawings

Fig. 1 is the explosive view of the utility model gas exchange valve arrangement；

Fig. 2 is the stem structure schematic diagram of the utility model gas exchange valve arrangement；

Fig. 3 is the axonometric drawing of the first air valve skeleton of the utility model gas exchange valve arrangement；

Fig. 4 a are the axonometric drawing of the upper fixed seat of the utility model gas exchange valve arrangement；

Fig. 4 b are the front view of the upper fixed seat of the utility model gas exchange valve arrangement；

Fig. 4 c are the vertical view of the upper fixed seat of the utility model gas exchange valve arrangement；

Fig. 4 d are the right view of the upper fixed seat of the utility model gas exchange valve arrangement；

Fig. 4 e are the left view of the upper fixed seat of the utility model gas exchange valve arrangement；

Fig. 5 a are the axonometric drawing of the lower fixed seat of the utility model gas exchange valve arrangement；

Fig. 5 b are the vertical view of the lower fixed seat of the utility model gas exchange valve arrangement；

Fig. 6 is the handle arrangement schematic diagram of the utility model gas exchange valve arrangement；

Fig. 7 is the drawbar structure diagram of the utility model gas exchange valve arrangement；

Fig. 8 a are the valve body structure schematic diagram of the utility model gas exchange valve arrangement；

Fig. 8 b are the valve body structure sectional view of the utility model gas exchange valve arrangement；

Fig. 9 a are the first working state schematic representation of the utility model gas exchange valve arrangement, i.e. valve rod is in an intermediate position；

Fig. 9 b are sectional view at the A-A of Fig. 8 a；

Figure 10 a are second of working state schematic representation of the utility model gas exchange valve arrangement, i.e. valve rod is in an intermediate position；

Figure 10 b are sectional view at the B-B of Fig. 9 a；

Figure 11 a are the third working state schematic representation of the utility model gas exchange valve arrangement, i.e. valve rod is in an intermediate position；

Figure 11 b are sectional view at the C-C of Figure 10 a；

Figure 12 is upper pressure pad (lower pressure pad) structural schematic diagram of the utility model gas exchange valve arrangement；

Figure 13 is the locking spacer structure sectional view of the utility model gas exchange valve arrangement；

Figure 14 is the structural schematic diagram of the utility model gas exchange valve arrangement being mounted on tire changer.

In figure：

1, valve body, the 11, first threaded hole, the 12, first relief valve, the 13, first air inlet-outlet pipe connector, 14, air source pipe fitting, 15, the second air inlet-outlet pipe connector, the 16, second relief valve, 17, upper casing, 18, lower outer cover；

2, the first air valve skeleton, 21, first annular groove, 22, first through hole；

3, big shovel；

4, O-ring seal；

5, lower fixed seat, 51, lower fixed seat through-hole, the 52, first spade interconnecting piece, the 53, first lock opening；

6, spacer is locked, 61, pin thread hole；

7, upper fixed seat, the 71, second spade interconnecting piece, the 72, second lock opening, 73, upper fixed seat ontology, 74, first Gap, 75, support ear；

8, valve rod, 81, work department, 82, interconnecting piece, 83, resetting apparatus, 811, ventilation annular groove, 831, upper pressure pad, 832, resetting spring, 833, lower pressure pad, 8311, spring holding section, 8312, spring retainer portion, 8313, pressure pad through-hole；

9, switching device, 91, handle, 92, pull rod, 911, handle holding section, 912, hand-held part, the 913, second gap, 914, taper knob, 921, pull rod opening.

Specific implementation mode

The manual big shovel gas exchange valve arrangement of a kind of tire changer provided by the utility model, as shown in Figure 1 comprising hollow Valve body 1, there are five the to be connected with valve inner for 1 lower end edge axial position spaced set of valve body as described in Fig. 8 a and 8b One threaded hole 11 is connected with the first relief valve 12, the first intake and exhaust in turn from bottom to top in described five the first threaded holes 11 Pipe fitting 13, air source pipe fitting 14, the second air inlet-outlet pipe connector 15 and the second relief valve 16.Relief valve, air inlet-outlet pipe connector and Air source pipe fitting difference kiss-coating after is threadedly coupled with the first threaded hole 11, kiss-coating rear thread connection can not only ensure pipe fitting and There is higher bonding strength between valve body, while sealing function can also be played, ensure that the working performance of scavenging air valve.This hair Common relief valve may be used in bright the first relief valve 12 and the second relief valve 16, it is preferable that noise reduction relief valve is selected, using disappearing Sound relief valve can reduce the noise of the gas exchange valve arrangement course of work.First air inlet-outlet pipe connector 13 and the second air inlet-outlet pipe connector 15 connect with the interface of the front end (rear end) of the cylinder for controlling the big shovel of tire changer and rear end (front end) respectively, gas source pipe Connector 14 is connect with air pump.For ease of description, the first air inlet-outlet pipe connector is assumed in subsequent description and is used for control wheel The front tab of the cylinder of the big shovel of tire changer connects, the second air inlet-outlet pipe connector and the gas for controlling the big shovel of tire changer The rear tab of cylinder connects, limitation of such connection type not as the present invention.

The first of circle ring column structure there are six being set successively from bottom to top in the axial direction in 1 internal cavity of the valve body Air valve skeleton 2, as shown in figures 1 and 3, the outer diameter of the first air valve skeleton 2 match with the diameter of 1 internal cavity of the valve body It closes, there is on the outer wall of the first air valve skeleton 2 first annular groove 21, along described the in the first annular groove 21 One air valve skeleton, 2 radial direction has the first through hole 22 that is connected to 2 internal diameter of the first air valve skeleton, in each two the O-ring seal 4, the race diameter of O-ring seal 4 and the internal cavity diameter phase of valve body 1 are equipped between one air valve skeleton 2 respectively Cooperation.It is fixed with the lower fixed seat 5 for limiting 2 position of the first air valve skeleton in 1 lower end of the valve body, such as Fig. 1, figure Shown in 5a and 5b, there is through-hole, lower fixed seat 5 is fixed on by bolt and gasket on valve body 1, described lower solid on lower fixed seat 5 Reservation 5 with 1 internal cavity corresponding position of the valve body there is lower fixed seat through-hole 51, the diameter of lower fixed seat through-hole 51 to be less than valve body The diameter of 1 internal cavity so that the air valve skeleton being placed in valve body 1 is limited in valve body, is also had on the lower fixed seat 5 It is useful for the first spade interconnecting piece 52 being connect with the spade of the big shovel 3 on tire changer, is had on the first spade interconnecting piece 52 It is useful for the through-hole of fixed spade, spade is placed in one and is fixed.

It is fixed with the locking spacer 6 of circle ring column structure in 1 inside 2 upper end of the first air valve skeleton of the valve body, Have along the pin thread hole 61 that valve body is radially processed, in pin with the locking 6 position corresponding section of spacer on the valve body 1 It is screwed into tightening pin in threaded hole 61 and is fixed on valve body for spacer will to be locked.To ensure fixing intensity, can process multiple Pin thread hole.The outer diameter of the locking spacer 6 is matched with the diameter of 1 internal cavity of the valve body, first gas of the top O-ring seal 4, the locking spacer 6 and the lower fixed seat 5 are equipped between valve skeleton and the locking spacer 6 by multiple institutes State the first air valve skeleton 2 and the limit of O-ring seal 4 prevents it from being axially moved in the valve body 1.

The scavenging air valve further includes that the valve rod 8 being placed in the valve body 1 and the switching for switching 8 position of the valve rod fill 9 are set, as shown in Fig. 2, the valve rod 8 includes with the work department 81 of the air valve skeleton minor diameter fit and for being filled with the switching The interconnecting piece 82 for setting 9 connections is in axial direction disposed with two ventilation annular grooves 811 in the work department 81, described logical Compression ring connected in star 811 optionally switches on and off the relief valve, air inlet-outlet pipe connector and gas source pipe connector.Valve rod 8 Work department 81 be placed in air valve skeleton and the internal diameter of O-ring seal, and the outer diameter of the work department 81 of valve rod 8 and air valve skeleton Internal diameter match, the internal diameter of O-ring seal 4 matched with the outer diameter of the work department 81 of valve rod 8 realize valve rod work department axis To sealing.The upper end of valve rod 8 is interconnecting piece 82, and interconnecting piece 82 is connect with switching device 9, the connection that switching device 9 passes through valve rod 8 Realize the up and down motion of valve rod in portion.During valve rod moves up and down, the switching of gas exchange valve arrangement may be implemented.The present embodiment In, switching device 9 is connected with valve rod 8 by helicitic texture.

It is that the first working condition of valve rod 8 under the action of switching device 9 (transport upwards by valve rod as illustrated in figures 9 a and 9b It is dynamic), the ventilation annular groove of lower end connects the first air inlet-outlet pipe connector 13 with gas source pipe connector 14 at this time, the ventilation ring of upper end Connected in star the second air inlet-outlet pipe connector 15 is connected with the second relief valve 16 (be not shown in figure air inlet-outlet pipe connector, relief valve and Air source pipe fitting).The air pump being connect with air source pipe fitting is recessed by the ventilation annular of air source pipe fitting 14, lower end by high pressure gas Slot and the first air inlet-outlet pipe connector 13 are input in the front tab of the cylinder for controlling the big shovel of tire changer and drive cylinder Valve rod move backward, pass through 15 He of the second air inlet-outlet pipe connector for controlling the gas of cylinder rear end of the big shovel of tire changer The ventilation annular groove of upper end is released from the second relief valve 16, and the valve rod of cylinder realizes the fortune shoveled greatly in motion process backward It is dynamic.

It is second working condition of the valve rod 8 under the action of switching device 9 (during valve rod is in as shown in figures 10 a and 10b Between position), be raised shown in arrow in handle such as Figure 10 b, valve rod moves downward, at this time the first relief valve, the first air inlet-outlet pipe Connector, air source pipe fitting, the second air inlet-outlet pipe connector and the second relief valve are mutually disconnected, therefore the big shovel of tire changer is in Stationary state.

It is that the third working condition of valve rod 8 under the action of switching device 9 (transport downwards by valve rod as shown in figures 11a and 11b It is dynamic), it is depressed shown in arrow in handle such as Figure 11 b, valve rod moves upwards, and the ventilation annular groove of lower end is by the first pressure release at this time Valve 12 is connected with the first air inlet-outlet pipe connector 13, and the ventilation annular groove of upper end connects air source pipe fitting 14 and the second air inlet-outlet pipe First 15 connect (being not shown in figure air inlet-outlet pipe connector, relief valve and gas source pipe connector).The air pump being connect with air source pipe fitting 14 High pressure gas is input to by air source pipe fitting, the ventilation annular groove of upper end and the second air inlet-outlet pipe connector for control wheel The valve rod of cylinder is driven to travel forward in the rear tab of the cylinder of the big shovel of tire changer, for controlling the big shovel of tire changer The gas of cylinder front end is released by the first air inlet-outlet pipe connector and the ventilation annular groove of lower end from the first relief valve, cylinder Valve rod forward movement in realize the movement shoveled greatly.By the switching of three of the above working condition, shovel pair greatly may be implemented The shovel pressure of tire, and then realize the mask work of tire and wheel rim.

1 upper end of the valve body is fixed with upper fixed seat 7, and upper fixed seat 7 is bolted on valve body 1.As Fig. 4 a, Shown in 4b, 4c, 4d and 4e, upper fixed seat 7 includes the upper fixed seat ontology 73 for having through-hole structure, and the one of upper fixed seat ontology 73 It holds with the first longitudinal gap 74, the both sides of the first gap 74 have a pair of of support ear on 73 outer wall of upper fixed seat ontology 75.The switching device 9 includes handle 91 and pull rod 92, as shown in fig. 7, pull rod 92 is cylindrical structure, in the upper of pull rod 92 Portion has pull rod opening 921, is equipped with pin in pull rod opening 921, pull rod 92 is placed in the through-hole of upper fixed seat 7, under pull rod 92 End is threadedly coupled with threaded hole (in Fig. 7 shown in dotted line) and with the interconnecting piece of valve rod 8 82,92 upper end of the pull rod and the hand Handle 91 is flexibly connected.As shown in fig. 6, the handle 91 includes the hand-held part of the flat handle holding section 911 and rear end in front end 912, there is the second gap 913, the rear end of handle holding section 911 to have a through-hole, upper fixation for the front end of handle holding section 911 Bolt, branch of the bolt by the through-hole for handle 91 to be articulated in upper fixed seat 7 are passed through in support ear 75 on seat ontology 73 It supports on ear 75, as shown in the upper ends Fig. 9 b, the second gap 913 of 911 front end of handle holding section, which is caught in, to be placed in pull rod opening 921 On pin, the hand-held part 911 of handle 91 is pulled manually, and handle 91 drives about 92 pull rod by fulcrum of the bolt at support ear 75 Movement, pull rod drive stem movement.Also have for being connect with the spade shoveled greatly on tire changer on fixed seat 7 The second spade interconnecting piece 71, there is the through-hole for fixing spade, spade is placed in one and quilt on the second spade interconnecting piece 71 It is fixed.Further, it can also be cased with taper knob 914 on hand-held part 911, hand-held and anti-skidding effect can be convenient for.

The Manual air-changing valve device of the utility model passes through the first spade interconnecting piece 52 and upper fixed seat on lower fixed seat 5 The second spade interconnecting piece 71 on 7 is fixed on the big shovel spade on tire changer.

Further, the scavenging air valve further includes the resetting apparatus 83 to automatically reset for the valve rod 8, the reset dress It includes upper pressure pad 831, resetting spring 832 and lower pressure pad 833, as shown in figure 12, the upper pressure pad 831 and the lower pressure pad to set 83 833 structures having the same comprising outer diameter and the matched spring holding section 8311 of 832 internal diameter of the resetting spring and be used for The spring retainer portion 8312 of the resetting spring 832 is limited, the spring holding section of the upper and lower pressure pad is placed and is caught in multiple in opposite directions The both ends of position spring also there is the interconnecting piece 82 for the valve rod 8 to pass through on the upper pressure pad 831 and the lower pressure pad 833 Pressure pad through-hole 8313, the resetting apparatus 83 assemble rear enclosure and are placed in 6 He of locking spacer in the interconnecting piece 82 of the valve rod 8 In the cavity of valve inner between fixed seat 7.As shown in Figure 10 b and Figure 11 b, valve rod 8 is promoting or is pushing process In, resetting spring 832 compresses under the action of upper pressure pad 831 and lower pressure pad 833, when release handle, as shown in figure 9b, compression Resetting spring push the separation of upper and lower pressure pad, since upper and lower pressure pad is placed in the valve inner between locking spacer and upper fixed seat Cavity in, the reset amount of resetting spring, the drawing that upper and lower pressure pad passes through the work department 81 or switching device 9 of valve rod 8 can be limited Bar driving stem moves to intermediate sealing station, at this time the first relief valve, the first air inlet-outlet pipe connector, air source pipe fitting, the Two air inlet-outlet pipe connectors and the second relief valve are mutually disconnected, therefore the big shovel of tire changer remains static.Using automatic The resetting apparatus of reset can reduce the workload of operating personnel, and can be to avoid using work when ventilation valve arrangement is turned off manually Forget that closing scavenging air valve causes the maloperation shoveled greatly as personnel.

Further, in order to ensure the intensity of 8 work department of valve rod, size at the ventilation annular groove of valve rod is avoided acutely to become Change causes stress concentration, 811 both ends of ventilation annular groove to be additionally provided with tapered transitional.

Further, as shown in figure 13, the internal diameter of the locking spacer 6 is step structure, under the locking spacer 6 Portion's internal diameter is matched with the work department 81 of the valve rod 8, and the upper inner diameter of the locking spacer 6 is more than the work of the valve rod 8 The size in portion 81.Using ladder-like interior gauge structure, it can not only ensure the sealing performance for locking spacer 6 and valve rod 8, while can be with The whole circularity requirement for reducing the internal diameter of locking spacer 6, reduces processing cost.

Further, as shown in figure 5a and 5b, there is the first spade interconnecting piece 52 of the lower fixed seat 5 first locking to open Mouth 53, as shown in Fig. 4 a and 4c, the second spade interconnecting piece tool 71 of fixed seat 7 has the second lock opening 72, has lock Tight opening can easily adjust position of the gas exchange valve arrangement on shovel spade greatly.In the present embodiment, spade interconnecting piece and lock Tightly opening constitutes hook-like configuration, and lock opening edge has flange, has screw thread mouth on flange, can be locked by bolt or loose Interconnecting piece is opened, to realize the fixation or release of spade.The structure that spade interconnecting piece can also use other conventional, for example, opening On the outside of interconnecting piece, opening both ends have the flange that the structures such as available bolt are stepped up and opened at end, for stepping up and pine Open spade.

In order to increase the anti-dust performance of air-valve device and reduce since the exposed of component causes and operating personnel in air valve Contact, further include upper casing 17 and lower outer cover 18, upper and lower outer cover is respectively U-shaped metal plate slot structure, is machined with thereon for solid The through-hole being scheduled on valve body, upper casing 17 are fixed on fixed seat 7, and the lower outer cover 18 is buckled on the valve body 1.

Show that the gas exchange valve arrangement applies the structural schematic diagram on tire changer in Figure 14, circular dotted line in figure Part is the fixed position of the structure.

The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not Be confined to this, any one skilled in the art within the technical scope disclosed by the utility model, according to this practicality Novel technical solution and its inventive concept is subject to equivalent substitution or change, should all cover the scope of protection of the utility model it It is interior.

Claims (6)

1. a kind of manual big shovel gas exchange valve arrangement of tire changer, it is characterised in that：Including hollow valve body (1), the valve body (1) there are five the first threaded holes (11) being connected with valve body (1) inside for lower end edge axial position spaced set, described five It is connected with the first relief valve (12), the first air inlet-outlet pipe connector (13), air source in a first threaded hole (11) in turn from bottom to top Pipe fitting (14), the second air inlet-outlet pipe connector (15) and the second relief valve (16), the valve body (1) it is internal in the axial direction from Lower the first air valve skeleton (2) set successively upwards there are six circle ring column structure, the outer diameter of the first air valve skeleton (2) and institute It states valve body (1) inside diameter to match, there is first annular groove (21), in institute on the outer wall of the first air valve skeleton (2) It states in first annular groove (21) along the first air valve skeleton (2) radial direction with interior with the first air valve skeleton (2) The first through hole (22) of diameter connection, is equipped with O-ring seal (4), in the valve between each two the first air valve skeleton (2) Body (1) lower end is fixed with the lower fixed seat (5) for limiting the first air valve skeleton (2) position, the lower fixed seat (5) With the internal corresponding position of the valve body (1) there is lower fixed seat through-hole (51), the lower fixed seat (5) also to have for being torn open with tire First spade interconnecting piece (52) of the spade connection shoveled greatly in installation, the first air valve in the internal the top of the valve body (1) Skeleton (2) upper end is fixed with the locking spacer (6) of circle ring column structure, the outer diameter and the valve body (1) of the locking spacer (6) Inside diameter matches, and O-ring seal (4) is equipped between the first air valve skeleton (2) and the locking spacer (6), described Spacer (6) and the lower fixed seat (5) are locked by the first air valve skeleton (2) and O-ring seal (4) limit in the valve body (1) prevent it from being axially moved in, valve body (1) upper end is fixed with upper fixed seat (7), and the gas exchange valve arrangement further includes setting In the valve rod (8) in the valve body (1) and the switching device (9) for switching the valve rod (8) position, valve rod (8) packet It includes with the work department of the air valve skeleton minor diameter fit (81) and for the interconnecting piece (82) that is connect with the switching device (9), Two ventilation annular grooves (811), the ventilation annular groove (811) are in axial direction disposed in the work department (81) Optionally the relief valve, air inlet-outlet pipe connector and gas source pipe connector are switched on and off, the switching device (9) includes Handle (91) and pull rod (92), pull rod (92) lower end are connect with the interconnecting piece (82) of the valve rod (8), the pull rod (92) Upper end is flexibly connected with the handle (91), and the handle (91) is articulated on fixed seat (7), and the handle (91) is logical Crossing the pull rod (92) can drive the valve rod (8) to move up and down, and fixed seat (7), which also has, to be used for and tire changer On shovel greatly spade connection the second spade interconnecting piece (71).

2. the manual big shovel gas exchange valve arrangement of tire changer according to claim 1, it is characterised in that：The scavenging air valve is also The resetting apparatus (83) to automatically reset including being used for the valve rod (8), the resetting apparatus (83) include upper pressure pad (831), answer Position spring (832) and lower pressure pad (833), the upper pressure pad (831) and the lower pressure pad (833) include outer diameter and the reset bullet The matched spring holding section (8311) of spring (832) internal diameter and the spring retainer portion for limiting the resetting spring (832) (8312), the opposite both ends for placing and being caught in resetting spring (832) in the spring holding section (8311) of the upper and lower pressure pad, it is described Upper pressure pad (831) and the lower pressure pad (833) center have the pressure pad through-hole that the interconnecting piece (82) for the valve rod (8) passes through (8313), interconnecting piece (82) of resetting apparatus (83) the assembly rear enclosure in the valve rod (8) is placed in the locking spacer (6) In the cavity of valve body (1) inside between fixed seat (7).

3. the manual big shovel gas exchange valve arrangement of tire changer according to claim 1 or 2, it is characterised in that：The ventilation Annular groove (811) both ends are equipped with tapered transitional.

4. the manual big shovel gas exchange valve arrangement of tire changer according to claim 3, it is characterised in that：The locking spacer (6) internal diameter is step structure, and the lower inner diameter of the locking spacer (6) matches with the work department (81) of the valve rod (8) It closes, the upper inner diameter of the locking spacer (6) is more than the size of the work department (81) of the valve rod (8).

5. the manual big shovel gas exchange valve arrangement of tire changer according to claim 4, it is characterised in that：The lower fixed seat (5) there is the first lock opening (53), the second spade interconnecting piece of fixed seat (7) on the first spade interconnecting piece (52) (71) there is the second lock opening (72) on.

6. the manual big shovel gas exchange valve arrangement of tire changer according to claim 5, it is characterised in that：It further include upper casing (17) it is fixed on fixed seat (7) with lower outer cover (18), the upper casing (17), the lower outer cover (18) is buckled in described On valve body (1).