CN209354460U - A kind of air cylinder structure and locomotive - Google Patents

Abstract

The utility model relates to a kind of air cylinder structure and locomotives, particularly belong to pneumatics field.First cylinder and the second cylinder, first piston component is provided in first cylinder, second cylinder interior is provided with second piston component, it links between the first piston component and the second piston component, first cylinder is provided with the first air inlet and first exhaust throttle valve, is provided with second exhaust throttle valve on second cylinder；Trimmer valve is connect with first air inlet, is linked with gas source on first air inlet, and the gas flowed into from first air inlet is divided into two-way, and the first via enters in first cylinder, and the second tunnel enters in the trimmer valve；The intake and exhaust throttling that the utility model overcomes oscillating cylinder in the prior art conventional in the case where controlling mode of operation in wink cannot achieve the defect of cylinder buffering function.

Description

A kind of air cylinder structure and locomotive

Technical field

The utility model relates to a kind of air cylinder structure and locomotives, particularly belong to pneumatics field.

Background technique

A kind of mechanism of the oscillating cylinder as crankmotion within the scope of certain angle, is usually used on rolling stock To drive high voltage ground switch or same category of device divide-shut brake to act.Due to the limitation of installation space and structure, existing rolling stock On the oscillating cylinder that uses, volume of cylinder and piston stroke are generally less than normal.Therefore, wink control mode of operation under, it is conventional into Exhaust throttle cannot achieve cylinder buffering function, cause to bring in breaking-closing operating process to external device (ED)s such as high voltage ground switch Additional impact, damages device, influences rolling stock safe operation.

Utility model content

Therefore, the technical problem to be solved by the present invention is to overcome oscillating cylinder in the prior art to control in wink to operate Conventional intake and exhaust throttling cannot achieve the defect of cylinder buffering function under mode, so that providing one kind may be implemented pooling feature Air cylinder structure.

In order to solve the above-mentioned technical problem, the utility model provides a kind of air cylinder structure, comprising:

First cylinder and the second cylinder are provided with first piston component, second cylinder interior in first cylinder It is provided with second piston component, is linked between the first piston component and the second piston component, first cylinder is set It is equipped with the first air inlet and first exhaust throttle valve, is provided with second exhaust throttle valve on second cylinder；

Trimmer valve is connect with first air inlet, is linked with gas source on first air inlet, from first air inlet The gas that mouth flows into is divided into two-way, and the first via enters in first cylinder, and the second tunnel enters in the trimmer valve；

The trimmer valve has under the first piston component and/or the second piston component effect, makes inside it Gas flow into the first position of first cylinder, and flow into the second position in the second cylinder；The trimmer valve is from When one position moves to the second position, air-flow is flowed out from the trimmer valve respectively enters second cylinder and the second row In gas throttle valve；When the trimmer valve moves to first position from the second position, air-flow flowed out from the trimmer valve respectively into Enter in first cylinder and the first exhaust throttle valve.

Further, the trimmer valve includes: the trimmer valve air inlet with the first via or the second tunnel connection；And first outlet Mouthful, when the trimmer valve be in first position and the first cylinder connection；With the second gas outlet, the trimmer valve is in second When position with the second cylinder connection.

Further, the trimmer valve further include: movable block, to drive first gas outlet and second outlet Mouthful；Spool is slidably disposed between first cylinder and second cylinder, described to drive the movable block to make The relatively described trimmer valve air inlet in first gas outlet and second gas outlet moves.

Further, first air inlet is connect with shuttle valve respectively with the second air inlet.

Further, connecting rod, the length of the spool are provided between the first piston component and the second piston component Degree is the 1/2-5/6 of the length of connecting rod.

Further, the length of the spool is the 2/3 of the length of connecting rod.

Further, further includes: the second air inlet, while being connected with second cylinder and the trimmer valve.

Further, one-way throttle valve is connected separately on first air inlet and second air inlet.

Further, further includes: rack gear is connected on the connecting rod；Gear is matched with the rack gear, on the gear It is connected with output shaft.

The utility model also provides a kind of locomotive, including the air cylinder structure.

Technical solutions of the utility model have the advantages that

1. air cylinder structure provided by the utility model is persistently filled with compressed gas to the first air inlet, compressed gas is pushed First piston component, until first piston component touches trimmer valve, first piston components drive trimmer valve at this time, trimmer valve The second position is switched to by first position, compressed air enters the second cylinder from the outflow of the trimmer valve second position, into the second gas The compressed gas of cylinder acts on second piston component, provide with direction of motion opposite effect power, make first piston component and Two piston components gradually slow down by uniform motion, until touching cylinder wall stop motion.First piston component, second live Plug assembly slows down up to the process of last stop motion, the as buffering course of air cylinder structure.Similarly, it is held to the second air inlet It is continuous when being filled with compressed gas, the second intake-air throttle valve is adjusted, so that at the uniform velocity entering into the compressed gas in the second cylinder, is compressed Gas push second piston component, until second piston component touches trimmer valve, second piston components drive buffering at this time Valve, trimmer valve are switched to first position by the second position, and compressed air enters the first cylinder from the outflow of trimmer valve first position, into The compressed gas for entering the first cylinder acts on first piston component, provide with direction of motion opposite effect power, make first piston Component and second piston component gradually slow down by uniform motion, until touching cylinder end piece stop motion.It is conventional into Exhaust throttle can only control the uniform motion velocity magnitude of first piston component and second piston component, cannot achieve deceleration Process, therefore also without pooling feature.By the way that trimmer valve is added, first piston component and second piston component are realized in stroke Latter end touches the process of cylinder end piece front reduction gear, reduces the impact forces of piston component touching cylinder end piece, also solves Breaking-closing operating process gives the external device (ED)s bring additional impact such as high voltage ground switch, reduces device and the probability damaged occurs, Guarantee that rolling stock can be with safe operation.

2. air cylinder structure provided by the utility model, first air inlet is connect with shuttle valve respectively with the second air inlet. The effect for increasing shuttle valve is exactly to prevent from connecting between the first air inlet and the second air inlet.

3. air cylinder structure provided by the utility model, the trimmer valve further include: movable block, to drive described first to go out Port and second gas outlet；Spool is slidably disposed between first cylinder and second cylinder, to band Moving the movable block moves the relatively described trimmer valve air inlet in first gas outlet and second gas outlet.Spool Drive movable block by trimmer valve air inlet and the first gas outlet connection be changed to trimmer valve air inlet and the second gas outlet connection, from And realize commutation of the gas in air cylinder structure.

4. air cylinder structure provided by the utility model is arranged between the first piston component and the second piston component There is connecting rod, the length of the spool is the 1/2-5/6 of the length of connecting rod.Connecting rod plays connection first piston component and second and lives The effect of plug assembly, the length of spool are the 1/2-5/6 of the length of connecting rod, are since it is desired that first piston component or second Piston component just pushes the spool of trimmer valve after movement a period of time, to first piston component or second piston component in the first gas The process of cylinder or the second cylinder motion one buffering.

5. air cylinder structure provided by the utility model, the length of the spool is the 2/3 of the length of connecting rod.Due to One piston component or second piston component cannot be too long in the time of the first cylinder or the second cylinder motion, need limiting rod With the length of spool, avoid can not achieve pooling feature under wink control operation.

Detailed description of the invention

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the schematic diagram of air cylinder structure provided by the utility model；

Fig. 2 is the perspective view of air cylinder structure provided by the utility model；

Fig. 3 is the main view of cylinder provided by the utility model；

Fig. 4 is the top view of cylinder provided by the utility model；

Fig. 5 is the A direction view of Fig. 3；

Fig. 6 is the trimmer valve cross-sectional view of cylinder provided by the utility model；

Fig. 7 is the B direction view of cylinder provided by the utility model.

Description of symbols:

The first cylinder of 1-；111- first piston component；The second cylinder of 2-；21- second piston component；

211-O type sealing ring；212- piston ring；213- seal washer；

3- gear；4- output shaft；5- rack gear；6- trimmer valve；61- spool；The first gas outlet 62-；

The second gas outlet 63-；64- retainer；65- special-shaped seal ring；66- stop frame；

67- circlip；68- valve body；69- trimmer valve air inlet；

7- shuttle valve；8- exhaust shutter；81- first exhaust throttle valve；

82- second exhaust throttle valve；9- intake-air throttle valve；The first intake-air throttle valve of 91-；

The second intake-air throttle valve of 92-；10- end cap；11- cylinder block；12- cam bit；13- screw；

The first air inlet of 14-；The second air inlet of 15-；

Specific embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical Novel protected range.

In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other Not constituting conflict can be combined with each other.

A kind of a kind of specific embodiment of air cylinder structure as shown in Figure 1, comprising:

First cylinder 1 and the second cylinder 2 are provided with first piston component 111, second cylinder in first cylinder It is internally provided with second piston component 21, is linked between the first piston component 111 and the second piston component 21, it is described First cylinder 1 is provided with the first air inlet 14 and first exhaust throttle valve 81, and second cylinder 2 is provided with second row moral Flow valve 82；

Trimmer valve 6 is connect with first air inlet 14, is linked with gas source on first air inlet 14, from described The gas that one air inlet 14 flows into is divided into two-way, and the first via enters in first cylinder 1, and the second tunnel enters the trimmer valve 6 In；

The trimmer valve 6 has under the first piston component 111 and/or 21 effect of second piston component, makes Its internal gas flows into the first position of first cylinder 1, and flows into the second position in the second cylinder 2；It is described slow When rushing valve 6 and moving to the second position from first position, air-flow is flowed out from the trimmer valve 6 respectively enters second cylinder 2 In the second exhaust throttle valve 82；When the trimmer valve 6 moves to first position from the second position, air-flow delays from described Outflow in valve 6 is rushed to respectively enter in first cylinder 1 and the first exhaust throttle valve 81.

Above-mentioned air cylinder structure is persistently filled with compressed gas to the first air inlet 14, and compressed gas pushes first piston component 111, until first piston component 111 touches trimmer valve 6, first piston group 111 at this time pushes trimmer valve 6, trimmer valve 6 by First position is switched to the second position, and compressed gas enters the second position in the second cylinder 2 from the outflow of 6 second position of trimmer valve Act on second piston component 21, provide with direction of motion opposite effect power, make first piston component 111 and second piston group Part 21 is reduced speed now by uniform motion, until touching 10 stop motion of cylinder end piece.First piston component 111, second piston Component 21 slows down up to the process of last stop motion, the as buffering course of air cylinder structure.Conventional intake and exhaust throttling, can only The uniform motion velocity magnitude for controlling first piston component and second piston component, cannot achieve the process of deceleration, therefore also do not have There is pooling feature.By the way that trimmer valve 6 is added, realizes first piston component 111 and second piston component 21 and touched in stroke latter end The process of 10 front reduction gear of cylinder end piece is touched, reduces the impact forces of piston component touching cylinder end piece, also solves in division The external device (ED)s bring additional impact such as high voltage ground switch is given in lock operating process, reduces device and the probability damaged occurs, guarantees Rolling stock can be with safe operation.

As shown in Fig. 2, air cylinder structure provided by the utility model is set in cylinder block 11, the both ends of cylinder block 11 are equipped with End cap 10 is fixed in cylinder block 11 by end cap 10 by screw 13, is equipped between end cap 10 and cylinder block and is played sealing function The O-ring seal of energy.

As shown in fig. 6, the trimmer valve 6 includes: the trimmer valve air inlet 69 with the first via or the second tunnel connection；And the When one gas outlet 62, the trimmer valve 6 are in first position with the first cylinder connection；It is described slow with the second gas outlet 63 Rush when valve 6 is in the second position with 2 connection of the second cylinder.

Specifically, the trimmer valve 6 further include: movable block, to drive first gas outlet 62 and described second to go out Port 63；Spool 61 is slidably disposed between first cylinder 1 and second cylinder 2, to drive the activity Block moves the relatively described trimmer valve air inlet 69 in first gas outlet 62 and second gas outlet 63.61 band of spool Trimmer valve air inlet 69 and 62 connection of the first gas outlet are changed to and trimmer valve air inlet 69 and the second gas outlet 63 by dynamic movable block Connection, to realize commutation of the gas in air cylinder structure.

The trimmer valve 6 be two-position three way commutate form, in the valve body 68 of trimmer valve 6, be sequentially installed with stop frame 66, The quantity of retainer 64, stop frame 66 and circlip 67, retainer 64 is adapted to according to the stroke of spool 61, includes at least 3 groups, It is preferred that 4 groups or more.Spool 61 is that the annular groove that machined two sections of certain lengths by smooth cylindrical shaft is formed, by first piston group Part 111 or second piston component 21 push, and the different location that spool 61 stops in trimmer valve 6 realizes the buffering of trimmer valve 6 Valve air inlet 69 is connected to the first gas outlet 62 or the second gas outlet 63.The sealing of spool 61 by special-shaped seal ring guarantee, It joined elasticity more preferably O-ring seal between special-shaped seal ring and retainer 64 and stop frame 66.Retainer 64, stop frame 66 Sealing with valve body 68 is guaranteed by O type sealing ring.

First air inlet 14 is connect with shuttle valve 7 respectively with the second air inlet 15.

The shuttle valve 7 is equivalent to be made of two check valves, is functioned as or door, when compressed gas is by the first air inlet When 14 entrance, the air inlet that shuttle valve 7 is connect with the second air inlet 15 is in closed state, only an one end is allowed to be filled with compressed gas, The effect for increasing shuttle valve 7 is exactly to prevent from connecting between the first air inlet 14 and the second air inlet 15, is avoided in the first air inlet 14 When being filled with compressed gas, the second cylinder 2 is directly entered by the second air inlet 15, to cannot achieve the function of cylinder.

Connecting rod, the length of the spool 61 are provided between the first piston component 111 and the second piston component 21 Degree is the 1/2-5/6 of the length of connecting rod.Connecting rod plays the role of connecting first piston component and 111 second piston components 21, The length of spool 61 is the 1/2-5/6 of the length of connecting rod, is since it is desired that first piston component 111 or second piston component The spool 61 that trimmer valve 6 is just pushed after 21 movement a period of times, to first piston component 111 or second piston component 21 first The process of one buffering of movement in cylinder 1 or the second cylinder 2.

The length of the spool 61 is the 2/3 of the length of connecting rod.The length of the spool 61 is the length of connecting rod 2/3.Since the time that first piston component 111 or second piston component 21 move in the first cylinder 1 or the second cylinder 2 cannot Too long, the too long time is not wink control operation, needs the length of limiting rod Yu spool 61, avoids can not achieve under wink control operation The pooling feature of cylinder.

As shown in figure 5, first piston component 111 or second piston component 21 include O-ring seal 211, piston ring 212, the components such as screw, O-ring seal, seal washer 213.Wherein, O-ring seal 211 is mounted on piston ring 212 and cylinder block Between 11, O-ring seal is mounted between piston ring 212 and seal washer 213, and the both ends of rack gear 5 are provided with threaded hole, Screw is for connecting entire first piston component 111 or second piston component 21 and rack gear 5.

Further include: the second air inlet 15, while being connected with second cylinder 2 and the trimmer valve 6.Described first into One-way throttle valve is connected separately on port 14 and second air inlet 15.

As a kind of specific embodiment, one-way throttle valve is the first intake-air throttle valve 91, the second intake-air throttle valve 92 With first exhaust throttle valve 81 and second exhaust throttle valve 82.

As shown in fig. 7, trimmer valve 6 is fixedly mounted in the mounting groove reserved in cylinder block 11 by screw, shuttle valve 7, the One exhaust shutter 81, second exhaust throttle valve 82, the first intake-air throttle valve 91 and the second intake-air throttle valve 92 are threadedly coupled Mode be mounted in cylinder block 11 reserve threaded hole in.Cylinder block 11 is internally provided with cavity air flue, to connection air inlet Mouth, one-way throttle valve, shuttle valve, trimmer valve etc..

As shown in Figure 5, further includes: rack gear 5 is connected on the connecting rod；Gear 3 is matched with the rack gear 5, described Output shaft 4 is connected on gear 3.

Output shaft 4 is installed on gear 3, realized by gear 3 and the engaged transmission of rack gear 5 output shaft 4 certain The rotary motion of range, can be by adjusting the stroke and gear 3 and tooth of first piston component 111 and second piston component 21 Transmission ratio between item 5 arbitrarily adjusts within the scope of 0~360 °.Direction of rotation is rotational angle clockwise or counterclockwise According to actual needs, it is best that the rotation angle of output shaft 4, which is 120 ° or 180 °,.

As in Figure 2-4, air cylinder structure further includes at least one set of cam bit 12 that interlock is constituted with external devices, convex It takes turns block 12 and also transmits torque for air cylinder structure, the swing of cam bit 12 is in running order convenient for identification air cylinder structure.

The utility model additionally provides a kind of locomotive, including the air cylinder structure.

A kind of specific work process of air cylinder structure provided by the utility model: compressed gas is filled with to the first air inlet 14 Body opens the second row air valve 82 being connected to the second air inlet 15, and the pressure of compressed gas is kept constant, and compressed gas is divided into two Road enters in the first intake-air throttle valve 91 all the way, and another way enters in trimmer valve 6 by shuttle valve 7, is gone out by the first of trimmer valve 6 The compressed gas that port 62 is gone out is converged with the gas for entering the first intake-air throttle valve 91, is entered in the first cylinder 1 together, the First piston component 111 in one cylinder 1 is in the left end of the first cylinder 1, adjusts the first intake-air throttle valve 91, so that into The compressed gas entered in the first cylinder 1 at the uniform velocity enters, and compressed gas pushes right end of the first piston component 111 to the first cylinder 1 It moves in a straight line, for connecting the second piston component 21 in the first piston component 111 and the second cylinder in the first cylinder 1 Rack gear 5, with 3 engaged transmission of gear being mounted on output shaft 4, the stroke that compressed gas pushes first piston component 111 to be walked As output shaft 4 needs the basic angle that rotates, until first piston component 111 touches the spool 61 of trimmer valve 6, at this time First piston component 111 push trimmer valve 6 spool 61, trimmer valve air inlet 69 be connected to the first gas outlet 62 be switched to it is slow It rushes valve air inlet 69 to be connected to the second gas outlet 63, compressed gas is entered in the second cylinder 2 by the second gas outlet 63, is acted on Second piston component 21, provide with direction of motion opposite effect power, make first piston component 111 and second piston component 21 by Uniform motion reduces speed now, until touching 10 stop motion of cylinder end piece.First piston component 111 and second piston component 21 The process of deceleration, the as buffering course of air cylinder structure, this course motion time is very of short duration, in 0.1s or so.This is moved through Journey has done relative motion also relative to the second cylinder 2 although the distance that second piston component 21 moves is shorter, exports Axis 4 also has rotated certain angle, the rotation of output shaft 4 when the first piston component 111 in this angle and the first cylinder 1 moves right The rotation angle that the angle addition turned, as output shaft 4 need to complete, second piston component 21 are done at the uniform velocity in the second cylinder 2 The process slowed down up to last stop motion, the as buffering course of the second cylinder 2 are moved to, the second cylinder 2 is realized Pooling feature.In the opposite manner, gas is persistently filled with to the second air inlet 15, specific operating process with give the first air inlet 14 to be persistently filled with gas phase same, so that complete first piston component 111 realizes pooling feature in the first cylinder, gas is by the One exhaust shutter 81 is discharged by the first air inlet 14.

Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or It changes among the protection scope created still in the utility model.

Claims (10)

1. a kind of air cylinder structure characterized by comprising

First cylinder (1) and the second cylinder (2) are provided with first piston component (111) in first cylinder, second gas Cylinder interior is provided with second piston component (21), between the first piston component (111) and the second piston component (21) Linkage, first cylinder (1) are provided with the first air inlet (14) and first exhaust throttle valve (81), second cylinder (2) second exhaust throttle valve (82) are provided on；

Trimmer valve (6) is connect with first air inlet (14), is linked with gas source on first air inlet (14), from described The gas that first air inlet (14) flows into is divided into two-way, and the first via enters in first cylinder (1), and the second tunnel enters described slow It rushes in valve (6)；

The trimmer valve (6) has under the first piston component (111) and/or the second piston component (21) effect, The gas for keeping it internal flows into the first position of first cylinder (1), and flows into the second position in the second cylinder (2)； When the trimmer valve (6) moves to the second position from first position, air-flow outflow from the trimmer valve (6) respectively enters described In second cylinder (2) and the second exhaust throttle valve (82)；The trimmer valve (6) moves to first position from the second position When, air-flow outflow from the trimmer valve (6) respectively enters first cylinder (1) and the first exhaust throttle valve (81) In.

2. air cylinder structure according to claim 1, which is characterized in that the trimmer valve (6) includes: and the first via or second The trimmer valve air inlet (69) of road connection；And first gas outlet (62), the trimmer valve (6) when being in first position with it is described First cylinder (1) connection；With the second gas outlet (63), when the trimmer valve (6) is in the second position with second cylinder (2) Connection.

3. air cylinder structure according to claim 2, which is characterized in that the trimmer valve (6) further include: movable block, to Drive first gas outlet (62) and second gas outlet (63)；Spool (61) is slidably disposed in first gas Between cylinder (1) and second cylinder (2), to drive the movable block to go out first gas outlet (62) and described second The relatively described trimmer valve air inlet (69) of port (63) moves.

4. air cylinder structure according to claim 1, which is characterized in that first air inlet (14) and the second air inlet (15) it is connect respectively with shuttle valve (7).

5. air cylinder structure according to claim 3, which is characterized in that the first piston component (111) and described second Connecting rod is provided between piston component (21), the length of the spool (61) is the 1/2-5/6 of the length of connecting rod.

6. air cylinder structure according to claim 5, which is characterized in that the length of the spool (61) is the length of connecting rod 2/3.

7. air cylinder structure according to claim 3, which is characterized in that further include:

Second air inlet (15), while being connected with second cylinder (2) and the trimmer valve (6).

8. air cylinder structure according to claim 7, which is characterized in that first air inlet (14) and second air inlet One-way throttle valve is connected separately on mouth (15).

9. air cylinder structure according to claim 5, which is characterized in that further include:

Rack gear (5), is connected on the connecting rod；

Gear (3) is matched with the rack gear (5), and output shaft (4) are connected on the gear.

10. a kind of locomotive, which is characterized in that including the air cylinder structure any at least one claim 1-9.