CN216478152U - Brake cylinder - Google Patents

Abstract

The application relates to a brake cylinder, relate to the field of checking jar, including cylinder body and piston rod, the piston rod sets up in the cylinder body, still include mount pad and connector, be provided with the drive arrangement who is used for driving the piston rod to remove in the cylinder body, the mount pad sets up the one end that stretches out the cylinder body at the piston rod, the connector cover is established on the piston rod, connect through spacing subassembly between connector and the mount pad, still be equipped with control assembly between connector and the mount pad, control assembly is used for controlling spacing subassembly drive connector and mount pad synchronous motion or break away from. This application has the effect that improves operator's change brake block efficiency.

Description

Brake cylinder

Technical Field

The application relates to the field of brake cylinders, in particular to a brake cylinder.

Background

The checking cylinder is used for rail vehicle, checking cylinder fixed connection is connected with rail vehicle's brake subassembly on rail vehicle, the piston rod of checking cylinder drives the brake subassembly to brake to rail vehicle when stretching out, brake block on the brake subassembly constantly wears when using, make the brake block attenuation, the piston rod of checking cylinder can extend along with the wearing and tearing of brake block in the use, the thickness wearing and tearing compensation as the brake block is come to the distance of stretching out of piston rod, the operator need change the brake block after long-time use, the checking cylinder piston rod at this moment is in the extension state, when changing the brake block, the operator needs drive the piston rod through rotating the piston rod and resets. Because the piston rod of brake cylinder is connected with rail vehicle's brake subassembly, can't direct rotation, need the operator to pull down the brake cylinder usually and just can realize driving its through the piston rod of rotating the brake cylinder and reset, the brake cylinder after resetting is installed again on rail vehicle. The piston rod of the reset brake cylinder is time-consuming and labor-consuming in the mode, and the working efficiency of an operator for replacing the brake pad is seriously influenced.

SUMMERY OF THE UTILITY MODEL

In order to realize doing benefit to the purpose that improves operator and change brake block efficiency, this application provides a brake cylinder.

The application provides a brake cylinder adopts following technical scheme:

the utility model provides a brake cylinder, includes cylinder body and piston rod, the piston rod sets up in the cylinder body, its characterized in that: including mount pad and connector, be provided with the drive arrangement who is used for driving the piston rod to remove in the cylinder body, the mount pad sets up the one end that stretches out the cylinder body at the piston rod, the connector cover is established on the piston rod, connect through spacing subassembly between connector and the mount pad, still be equipped with control assembly between connector and the mount pad, control assembly is used for controlling spacing subassembly drive connector and mount pad synchronous motion or breaks away from.

Through adopting above-mentioned technical scheme, the operator need remove the butt relation between connector and the mount pad through control assembly when needing to rotate the piston rod and reset, then the connector no longer restricts the mount pad and rotates, and the operator rotates the mount pad this moment and then can not take place under the pivoted condition at the connector, drives the piston rod and rotates, and then makes the piston rod reset. The mode avoids the process that an operator disassembles and assembles the brake cylinder from the rail vehicle, and is favorable for improving the efficiency of replacing the brake pad for the operator.

Optionally, the limiting assembly includes a first disk tooth and a second disk tooth, the first disk tooth is fixedly connected to the connecting head, the second disk tooth is fixedly connected to the mounting seat, and the first disk tooth and the second disk tooth are meshed with each other.

Through adopting above-mentioned technical scheme, when connector and mount pad butt, first dish tooth and second dish tooth intermeshing then the connector restriction mount pad rotates, and when connector and mount pad separation, first dish tooth breaks away from the second dish tooth, then the restriction effect to the mount pad is removed to the connector.

Optionally, the control assembly includes first rotation seat, first rotation seat slip cap is established on the connecting head, the groove of stepping down has been seted up towards one side of mount pad to first rotation seat, the draw-in groove has been seted up on the connecting head, the joint has first jump ring in the draw-in groove, first jump ring is located the groove of stepping down, just first jump ring butt is on the lateral wall of the groove of stepping down towards the mount pad, wear to be equipped with a plurality of locking bolts on the mount pad, each locking bolt all runs through the mount pad and with first rotation seat threaded connection.

Through adopting above-mentioned technical scheme, the operator is when needing to rotate the piston rod and reset, and the operator unscrews each locking bolt for the mount pad can separate with the connector, then removes the spacing effect of connector to the mount pad, and the operator drives the mount pad through twisting to rotate the rotation seat and rotates, and then drives the piston rod and rotate and reset, accomplishes the back that resets of piston rod, and the operator makes connector and mount pad butt again through screwing up each locking bolt, and the restriction piston rod rotates so, thereby has accomplished the operation that resets to the piston rod.

Optionally, a first pushing spring is arranged between the first snap spring and the first rotating seat, one end of the first pushing spring is abutted to the side wall, facing the mounting seat, of the abdicating groove, and the other end of the first pushing spring is fixedly connected with a push plate which is abutted to one side, facing the first pushing spring, of the snap spring.

Through adopting above-mentioned technical scheme, when each locking bolt is all screwed up, first rotation seat and jump ring push away the spring compression with first top, first top pushes away the spring and exerts the elastic force towards the mount pad to the connector, make the connector support tightly on the mount pad, realize the meshing of first dish tooth and second dish tooth, the operator can directly twist first rotation seat and drive the mount pad rotation, the mount pad is at the rotation in-process, the second dish tooth exerts the power towards the connector direction to first dish tooth, first dish tooth drives the connector and removes and compress first reset spring towards keeping away from the cylinder body direction, make first dish tooth and second dish tooth realize relative rotation, when the operator stops the rotation to first rotation seat, first dish tooth and second dish tooth are engaged again.

Optionally, be provided with the first dust cover that is used for blockking dust between first rotation seat and the cylinder body, just piston rod axis direction is tensile can be followed to first dust cover, first caulking groove has been seted up on the cylinder body, first dust cover one end inlays to be established in first caulking groove, the first solid fixed ring of other end fixedly connected with of first dust cover, the mounting groove has been seted up on the periphery wall of first rotation seat, the mounting groove is opened towards one side of cylinder body, first solid fixed ring sliding sleeve is established on the mount pad, just first solid fixed ring is located the mounting groove, the mount pad is with the restriction of first solid fixed ring in the mounting groove.

Through adopting above-mentioned technical scheme, set up first dust hood and can reduce the dust and enter into between connector and the piston rod, influence the normal work of checking cylinder. First solid fixed ring sliding sleeve establishes on the mount pad, and when the operator screwed first rotation seat, first solid fixed ring took place relative rotation with the mount pad, makes things convenient for the operator to twist first rotation seat.

Optionally, the control assembly includes that the second rotates seat and threaded sleeve, the second rotates the seat and passes through the bearing rotation and connect on the connector, the second rotates a plurality of guide bars of fixedly connected with on the seat, and is a plurality of the axis of guide bar is all parallel with the axis of piston rod, and each the guide bar all slides and runs through the mount pad, threaded sleeve slip cap is established outside the mount pad, fixedly connected with spacing ring in the threaded sleeve, the spacing ring butt deviates from one side that the seat was rotated to the second at the mount pad, threaded sleeve rotates a threaded connection with the second.

Through adopting above-mentioned technical scheme, when the operator unscrewed the screw sleeve and make connector and mount pad when mutual separation, remove the spacing effect of connector to the mount pad, then the operator twists the second and rotates the seat, and the second rotates the seat and rotates then to drive the mount pad and rotate under the effect of guide post, and the mount pad rotates then to drive the piston rod and rotates and reset. After the piston rod resets, the operator screws up the threaded sleeve again, so that the connector is abutted against the mounting seat again, and the piston rod of the brake cylinder resets.

Optionally, an accommodating groove is formed in one side, facing the mounting seat, of the second rotating seat, a second pushing spring is arranged in the accommodating groove, one end of the second pushing spring abuts against a groove bottom wall of the accommodating groove, the other end of the second pushing spring abuts against the mounting seat, and the second pushing spring is in a compressed state.

Through adopting above-mentioned technical scheme, the operator unscrews the threaded sleeve, and under the elastic force effect that the second pushed away the spring, connector and mount pad alternate segregation make things convenient for the operator to twist and move the second and rotate the seat and drive the piston rod and rotate.

Optionally, a second dust hood for blocking dust is arranged between the second rotating seat and the cylinder body, the second dust hood can stretch along the axis direction of the piston rod, a second caulking groove is formed in the cylinder body, one end of the second dust hood is embedded in the second caulking groove, the other end of the second dust hood is fixedly connected with a second fixing ring, the second fixing ring is slidably sleeved on the threaded sleeve, a retaining ring is fixedly connected to the threaded sleeve, one end of the second fixing ring is abutted to the retaining ring, and the threaded sleeve is further provided with a second snap spring for limiting the second fixing ring to move axially along the piston rod.

Through adopting above-mentioned technical scheme, the second keeps off the dustcoat and can reduce the dust and get into between cylinder body and the connector, plays the guard action to the checking cylinder. The second fixing ring is rotatably connected with the threaded sleeve, so that when an operator twists the threaded sleeve, the second fixing ring and the threaded sleeve rotate relatively, and the influence of the second dust blocking cover on the twisting of the threaded sleeve by the operator is reduced.

In summary, the present application includes at least one of the following beneficial technical effects: an operator twists the first rotating seat to drive the mounting seat to rotate together with the piston rod, and the second plate tooth pushes the first plate tooth to move towards the direction of keeping away from the cylinder body in the rotating process of the piston rod, so that the first plate tooth and the second plate tooth are separated from each other, and the first plate tooth and the second plate tooth rotate relatively, so that the piston rod is rotated to reset, the time required for dismounting and mounting the brake cylinder from the rail vehicle by the operator is avoided, and the efficiency for replacing the brake pad by the operator is improved.

Drawings

Fig. 1 is a schematic overall structure diagram of a first embodiment of the present application.

Fig. 2 is a schematic structural diagram for embodying the first rotating base in the embodiment of the present application.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Fig. 4 is a schematic structural diagram for embodying the second rotating base in the embodiment of the present application.

Fig. 5 is an enlarged schematic view of a portion B in fig. 4.

Description of reference numerals: 1. a cylinder body; 11. a piston rod; 12. a rotating shaft; 13. a mounting seat; 14. a connector; 15. a groove; 2. a limiting component; 21. a first disc tooth; 22. a second disc tooth; 3. a control component; 31. a first rotating base; 32. locking the bolt; 33. a yielding groove; 34. a card slot; 35. a first clamp spring; 36. a first urging spring; 37. pushing the plate; 4. a first dust cover; 41. a first caulking groove; 42. a first retaining ring; 43. a first ring groove; 44. mounting grooves; 5. a second rotating base; 51. a bearing; 52. a guide bar; 53. accommodating grooves; 54. a second pushing spring; 55. a threaded sleeve; 56. a limiting ring; 6. a second retaining ring; 61. a baffle ring; 62. a limiting groove; 63. a second clamp spring; 64. a second ring groove; 65. a second dust hood; 66. a second caulking groove; 7. a displacement cylinder; 71. a piston plate; 72. an air inlet; 73. a relief spring; 75. a step groove; 76. a through hole; 77. a first waist-shaped hole; 78. a limit bolt; 8. an adjustment assembly; 81. adjusting the sleeve; 82. adjusting the nut; 83. a second waist-shaped hole; 84. a third disc tooth; 85. a fourth disc tooth; 86. a first return spring; 9. a pushing assembly; 91. a guide block; 92. a lead nut; 93. a top block; 94. a second return spring.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

Example 1

The embodiment of the application discloses a brake cylinder. As shown in fig. 1, 2 and 3, the brake cylinder includes a cylinder body 1, a piston rod 11 is disposed in the cylinder body 1, the piston rod 11 is a screw rod, and a driving device for driving the piston rod 11 to move is disposed in the cylinder body 1. One end of the piston rod 11 extending out of the cylinder body 1 is integrally formed with a cylindrical rotating shaft 12, the rotating shaft 12 and the piston rod 11 are coaxial, a mounting seat 13 is sleeved on the rotating shaft 12, the mounting seat 13 is fixedly connected with the rotating shaft 12, the mounting seat 13 is a rotating body, and the central axis of the mounting seat 13 is collinear with the central axis of the rotating shaft 12. One side that mount pad 13 deviates from cylinder body 1 is provided with connector 14, and connector 14 is connected with the brake subassembly on the railcar for connector 14 can't rotate at will, and when piston rod 11 stretched out, then drive the brake subassembly and brake rail vehicle, and columniform recess 15 has been seted up towards one side of mount pad 13 to connector 14, and pivot 12 slides and wears to establish in recess 15. The connector 14 and the mounting seat 13 are abutted against each other, the limiting assembly 2 for limiting relative rotation between the connector 14 and the mounting seat 13 is arranged between the connector 14 and the mounting seat 13, and when the connector 14 and the mounting seat 13 are separated from each other, relative rotation can be generated between the connector 14 and the mounting seat 13. The connecting head 14 is further provided with a control assembly 3 for controlling the connecting head 14 and the mounting base 13 to abut against each other.

The driving device comprises a displacement barrel 7, the displacement barrel 7 is arranged on a cylinder body 1 in a sliding mode, a piston rod 11 is arranged in the displacement barrel 7, a piston plate 71 is arranged in the cylinder body 1, the piston plate 71 is fixedly connected with the displacement barrel 7, an air inlet hole 72 used for air inlet to push the piston plate 71 to feed is formed in the cylinder body 1, a relieving spring 73 used for controlling the piston plate 71 to reset is arranged in the cylinder body 1, a step groove 75 is formed in the cylinder body 1, the relieving spring 73 is located in the step groove 75, one end of the relieving spring 73 abuts against the bottom wall of the step groove 75, the other end of the relieving spring 73 abuts against the piston plate 71, and a through hole 76 used for balancing air pressure in the cylinder barrel is formed in the cylinder body 1. An adjusting component 8 for driving the piston rod 11 and the displacement cylinder 7 to synchronously feed is arranged in the displacement cylinder 7, and a pushing component 9 for controlling the retraction amount of the piston rod 11 when the displacement cylinder 7 resets is further arranged in the displacement cylinder 7. The upper thread of the cylinder body 1 is connected with a limit bolt 78, the position of the displacement cylinder 7 corresponding to the limit bolt 78 is provided with a first waist-shaped hole 77, and the limit bolt 78 slides along the axial direction of the piston rod 11 and is arranged in the first waist-shaped hole 77.

The pushing assembly 9 comprises an adjusting sleeve 81 and an adjusting nut 82, the adjusting sleeve 81 slides to penetrate through the displacement barrel 7, the adjusting nut 82 is in threaded connection with the piston rod 11, the adjusting nut 82 is located in the adjusting sleeve 81, a second waist-shaped hole 83 is formed in the adjusting sleeve 81, the limiting bolt 78 slides along the axis direction of the piston rod 11 and is arranged in the second waist-shaped hole 83, the length of the second waist-shaped hole 83 is smaller than that of the first waist-shaped hole 77, a third disc tooth 84 is fixedly connected to the adjusting sleeve 81, a fourth disc tooth 85 is fixedly connected to the adjusting nut 82, the third disc tooth 84 is meshed with the fourth disc tooth 85, and a first reset spring 86 used for keeping the third disc tooth 84 meshed with the fourth disc tooth 85 is further arranged between the adjusting sleeve 81 and the adjusting nut 82.

The adjusting assembly 8 comprises a guide block 91 and a guide nut 92, the guide block 91 is fixedly connected in the displacement cylinder 7, the guide nut 92 is in threaded connection with the piston rod 11, an ejector block 93 is fixedly connected to the guide nut 92, the ejector block 93 abuts against the guide block 91, and a second return spring 94 used for keeping the abutting relation between the ejector block 93 and the guide block 91 is arranged on the guide nut 92.

When the air inlet hole 72 is filled with air, the air pressure pushes the piston plate 71 to synchronously feed together with the displacement cylinder 7, the guide block 91 in the displacement cylinder 7 and the displacement cylinder 7 synchronously feed, the guide block 91 abuts against the ejector block 93, so the guide block 91 and the guide nut 92 synchronously feed, the second return spring 94 is arranged between the guide nut 92 and the guide block 91, the guide block 91 and the ejector block 93 are abutted by the second return spring 94, the rotation of the guide nut 92 is limited under the action of the friction force of the guide block 91 and the ejector block 93, and the guide nut 92 is in threaded connection with the piston rod 11, the piston rod 11 does not rotate under the action of the limiting component 2, so the guide nut 92 can drive the piston rod 11 to synchronously feed. Because the piston rod 11 is in threaded connection with the adjusting nut 82, under the meshing action of the third disk teeth 84 and the fourth disk teeth 85, the adjusting nut 82 and the adjusting sleeve 81 do not rotate relatively, and under the action of the limiting bolt 78, the adjusting sleeve 81 and the displacement cylinder 7 do not rotate relatively, so that the adjusting nut 82 does not rotate, and the piston rod 11 and the adjusting nut 82 are synchronously fed. The adjustment sleeve 81 moves synchronously with the adjustment nut 82 under the action of the first return spring 86. Thereby, the displacement cylinder 7, the adjustment sleeve 81, the adjustment nut 82, the guide nut 92, and the piston rod 11 are synchronously fed.

When the displacement cylinder 7 moves to the end, away from the stop ring 61, of the second kidney-shaped hole 83 to abut against the limit bolt 78, the adjustment sleeve 81 stops feeding, the displacement cylinder 7 continues feeding, and the piston rod 11 synchronously feeds with the displacement cylinder 7 under the pushing action of the guide block 91, so that the piston rod 11 and the adjustment sleeve 81 perform relative displacement. In the relative displacement process of the piston rod 11 and the adjusting sleeve 81, the first spring is gradually compressed, and the third disc teeth 84 and the fourth disc teeth 85 are initially in a mutual meshing state, so that the adjusting nut 82 cannot rotate under the limiting effect of the adjusting sleeve 81, the adjusting nut 82 and the piston rod 11 can synchronously feed for a certain distance under the effect of the threads, and when the adjusting nut 82 moves to separate the third disc teeth 84 and the fourth disc teeth 85, the adjusting nut 82 can move towards the direction away from the retaining ring 61 under the effect of the elastic force of the first spring, so that the third disc teeth 84 and the fourth disc teeth 85 are meshed again. During the re-engagement of the third disk teeth 84 and the fourth disk teeth 85, the adjusting nut 82 rotates, and the adjusting nut 82 moves away from the retainer ring 61 on the piston rod 11. The third disc teeth 84 disengage and re-engage the fourth disc teeth 85 one or more times in one advance, causing the adjustment nut 82 to move a distance on the piston rod 11 in a direction away from the catch ring 61.

When the operator stops air intake to the air intake hole 72, the piston plate 71 is reset by the relief spring 73, and the displacement cylinder 7 is reset. In the resetting process of the displacement cylinder 7, the guide block 91 and the ejector block 93 are kept in a mutually abutting state under the action of the second spring, so that the guide nut 92 cannot rotate due to the friction force of the guide block 91 and the ejector block 93, and the guide nut 92 and the piston rod 11 cannot relatively move due to the threaded connection of the guide nut 92 and the piston rod 11 and the rotation of the piston rod 11, so that the displacement cylinder 7, the piston rod 11 and the guide nut 92 can synchronously reset under the pushing action of the guide block 91. Because the third plate tooth 84 and the fourth plate tooth 85 are kept in a meshed state under the action of the first spring, the adjusting nut 82 and the displacement cylinder 7 cannot rotate relatively, and because the displacement cylinder 7 cannot rotate per se, the adjusting nut 82 cannot rotate, and because the piston rod 11 cannot rotate, the adjusting nut 82 and the piston rod 11 synchronously reset under the action of threads, and the adjusting nut 82 resets to drive the adjusting sleeve 81 to synchronously reset. So that all the components in the displacement drum 7 are reset in synchronism with the displacement drum 7.

When the displacement cylinder 7 is reset to the position where the second kidney-shaped hole 83 is close to the connecting head 14 and abuts against the limit bolt 78, the adjusting sleeve 81 stops the resetting movement, so that the adjusting nut 82 stops the resetting movement, and the third disc tooth 84 is meshed with the fourth disc tooth 85, so that the adjusting nut 82 cannot rotate, and the resetting movement of the piston rod 11 is limited. Because the displacement cylinder 7 still performs the reset movement, the displacement cylinder 7 moves towards the direction away from the retaining ring 61 relative to the piston rod 11, in the process of relative movement of the displacement cylinder 7 and the piston rod 11, the top block 93 and the guide block 91 are initially in a tight abutting state, under the action of friction force of the top block 93 and the guide block 91, the guide nut 92 does not rotate, due to the fact that the guide nut 92 is in threaded fit with the piston rod 11 and the piston rod 11 does not rotate, the displacement cylinder 7 moves to drive the guide block 91 to move towards the direction away from the top block 93, the second spring is compressed, the guide block 91 is separated from the top block 93, at the moment, the guide nut 92 can rotate, and under the action of elastic force of the first spring, the guide nut 92 rotates around the piston rod 11 and moves towards the direction away from the retaining ring 61, so that the guide block 91 and the top block 93 abut again. The guide block 91 is separated from and abutted against the top block 93 one or more times during one-time resetting, so that the guide nut 92 moves a distance on the piston rod 11 in a direction away from the stopper ring 61.

At this time, the adjusting nut 82 and the guiding nut 92 both move a distance on the piston rod 11 in a direction away from the retaining ring 61, and when the displacement cylinder 7 is reset, the piston rod 11 moves the same distance in a direction toward the retaining ring 61 relative to the adjusting nut 82 and the guiding nut 92. After the displacement cylinder 7 is reset, the adjusting nut 82 and the guide nut 92 are reset to the position of the displacement cylinder 7 before feeding, so that the piston rod 11 retracts a little for a distance relative to the displacement cylinder 7 after resetting, namely the piston rod 11 extends out of the displacement cylinder 7 for a distance after resetting, and the distance is the adjustment quantity of the single extension length of the driving mechanism, and the automatic distance compensation is realized according to the abrasion loss of a brake pad in the use process of the brake cylinder. Therefore, after the brake cylinder is used for a long time, the piston rod 11 extends out of the cylinder body 1 due to abrasion of the compensation brake pad, and since the piston rod 11 is simultaneously in threaded connection with both the guide nut 92 and the adjusting nut 82, when an operator resets the piston rod 11, the operator needs to rotate the piston rod 11 so that the piston rod 11 rotates relative to the guide nut 92 and the adjusting nut 82 until the guide nut 92 and the adjusting nut 82 are located at the initial position of the piston rod 11.

Spacing subassembly 2 includes first dish tooth 21 of fixed connection in connector 14 towards mount pad 13 one side, mount pad 13 towards one side fixedly connected with second dish tooth 22 of connector 14, and first dish tooth 21 and second dish tooth 22 intermeshing, thereby make connector 14 can restrict the rotation of mount pad 13, when connector 14 and mount pad 13 alternate segregation, first dish tooth 21 and second dish tooth 22 also can alternate segregation, and then remove the spacing effect of connector 14 to mount pad 13, make and can take place relative rotation between connector 14 and the mount pad 13.

The control assembly 3 comprises a first rotating seat 31, the first rotating seat 31 is a rotating body, a section of the connector 14 facing the mounting seat 13 is a cylinder, the first rotating seat 31 is coaxially sleeved on the connector 14 in a sliding manner, the first rotating seat 31 can be rotatably connected with the connector 14, and the central axis of the first rotating seat 31 is collinear with the central axis of the rotating shaft 12. First rotation seat 31 and mount pad 13 are laminated each other, are provided with a plurality of locking bolt 32 on the mount pad 13, and a plurality of locking bolt 32 evenly set up along the circumferencial direction of mount pad 13, and each locking bolt 32 all runs through mount pad 13 and threaded connection on first rotation seat 31. Annular groove 33 of stepping down has been seted up towards one side of mount pad 13 to first rotation seat 31, and first rotation seat 31 and the coaxial line of groove 33 of stepping down, and the inside wall intercommunication of groove 33 and first rotation seat 31 of stepping down. A circle of clamping grooves 34 are formed in the positions, corresponding to the yielding grooves 33, of the connecting head 14, first clamping springs 35 are embedded in the clamping grooves 34, the first clamping springs 35 are located in the yielding grooves 33, and first pushing springs 36 are arranged between the first clamping springs 35 and the side walls, facing the mounting seat 13, of the yielding grooves 33. The first pushing spring 36 is sleeved on the connecting head 14, one end of the first pushing spring 36 abuts against the side wall of the abdicating groove 33 facing the mounting seat 13, the other end of the first pushing spring 36 is fixedly connected with a circular pushing plate 37, the pushing plate 37 and the first rotating seat 31 are coaxial, the pushing plate 37 abuts against one side of the first snap spring 35 far away from the mounting seat 13, and the first pushing spring 36 is in a compressed state.

A cylindrical first dust cover 4 is arranged between the first rotating seat 31 and the abdicating groove 33, the dust cover is made of rubber and has certain elasticity, the dust cover and the rotating shaft 12 are coaxial, and the first dust cover 4 can stretch along the axial direction of the piston rod 11. The cylinder body 1 has seted up first caulking groove 41 towards the one end of connector 14, and first dust cover 4 one end inlays and establishes in first caulking groove 41, and the other end of first dust cover 4 is provided with annular first solid fixed ring 42, and has seted up round first annular 43 on the outer periphery of first solid fixed ring 42, and the one end that the cylinder body 1 was kept away from to first dust cover 4 inlays and establishes in first annular 43. Seted up round mounting groove 44 on the outer peripheral face of first rotation seat 31, and mounting groove 44 opens towards one side of mount pad 13, and first solid fixed ring 42 slip cover is established in mounting groove 44, and first solid fixed ring 42 and the coaxial setting of first rotation seat 31, and first solid fixed ring 42 rotatable coupling is on first rotation seat 31, and mount pad 13 shutoff is in mounting groove 44 towards one side of cylinder body 1 for restrict first solid fixed ring 42 roll-off mounting groove 44.

The implementation principle of the embodiment 1 of the application is as follows: when an operator needs to rotate the piston rod 11 to drive the piston rod 11 to reset, the operator directly twists the first rotating seat 31 to drive the mounting seat 13 to rotate together with the piston rod 11, in the rotating process of the piston rod 11, the initial state of the first disk teeth 21 and the initial state of the second disk teeth 22 are in a mutual meshing state, when the operator twists the first rotating seat 31 to drive the mounting seat 13 to rotate, the first fixing ring 42 and the first rotating seat 31 rotate relatively, meanwhile, the second disk teeth 22 apply a force to the first disk teeth 21 in the direction towards the connecting head 14, the first disk teeth 21 drive the connecting head 14 to move in the direction away from the cylinder body 1, and the first pushing spring 36 is compressed, so that the first disk teeth 21 and the second disk teeth 22 are separated from each other, and the first disk teeth 21 and the second disk teeth 22 can rotate relatively, thereby realizing the rotating reset of the piston rod 11. When the operator stops rotating the first rotating seat 31, the first pushing spring 36 pushes the circlip to drive the connecting head 14 and the first disk teeth 21 to reset, so that the first disk teeth 21 and the second disk teeth 22 are re-engaged and the rotation of the mounting seat 13 and the piston rod 11 is limited, and the rotation resetting of the piston rod 11 is completed.

Example 2

As shown in fig. 4 and 5, the embodiment 2 of the present application is the same as the embodiment 1 except that the control assembly 3 includes a second rotating base 5, the second rotating base 5 is a rotating body, the second rotating base 5 is coaxially and rotatably connected to the connecting head 14 through a bearing 51, and when the second rotating base 5 and the mounting base 13 abut against each other, the first disc teeth 21 and the second disc teeth 22 are engaged with each other. One side fixedly connected with a plurality of guide bars 52 of seat 5 towards mount pad 13 is rotated to the second, and a plurality of guide bars 52 evenly set up along the circumferencial direction of seat 5 is rotated to the second, and each guide bar 52 all is parallel with piston rod 11, and each guide bar 52 all slides and runs through mount pad 13. One side of the second rotating seat 5 facing the mounting seat 13 is provided with an annular accommodating groove 53, the second rotating seat 5 and the accommodating groove 53 are coaxial, a second pushing spring 54 is arranged in the second accommodating groove 53, one end of the second pushing spring 54 abuts against the bottom wall of the second accommodating groove 53, the other end of the second pushing spring 54 abuts against the mounting seat 13, and the second pushing spring 54 is always in a compressed state. The mounting base 13 is slidably sleeved with a cylindrical threaded sleeve 55, the threaded sleeve 55 is coaxially and fixedly connected with a limiting ring 56 towards the inner peripheral wall of the cylinder body 1, the limiting ring 56 abuts against one side, facing the cylinder body 1, of the mounting base 13, and one end, facing the second rotating base 5, of the threaded sleeve 55 is in threaded connection with the second rotating base 5.

The outer circumferential surface of the threaded sleeve 55 is coaxially sleeved with a second fixing ring 6, the second fixing ring 6 is rotatably connected to the threaded sleeve 55, a blocking ring 61 is coaxially and fixedly connected to the outer circumferential surface of the threaded sleeve 55, one end, facing the cylinder body 1, of the second fixing ring 6 is abutted to the blocking ring 61, an annular limiting groove 62 is further formed in the outer circumferential surface of the threaded sleeve 55, a second clamp spring 63 is embedded in the limiting groove 62, and the second fixing ring 6 is located between the second clamp spring 63 and the blocking ring 61. Seted up annular second annular groove 64 on the outer periphery of second solid fixed ring 6, cylinder body 1 has seted up second caulking groove 66 towards the one end of connector 14, it is used for blockking the second dust excluding hood 65 of dust to be provided with between second rotation seat 5 and the cylinder body 1, second dust excluding hood 65 is the rubber material, certain elasticity has, second dust excluding hood 65 is the cylinder, and second dust excluding hood 65 and pivot 12 coaxial line, second dust excluding hood 65 one end is inlayed and is established in second annular groove 64, the other end of second dust excluding hood 65 is inlayed and is established in second caulking groove 66, second dust excluding hood 65 can be followed piston rod 11's axis direction and is stretched out and drawn back.

The implementation principle of the embodiment of the application is as follows: when an operator needs to rotate the piston rod 11 to drive the piston rod 11 to reset, the operator needs to unscrew the threaded sleeve 55, the second fixing ring 6 and the threaded sleeve 55 rotate relatively in the rotation process of the threaded sleeve 55, in the unscrewing process of the threaded sleeve 55, under the elastic force action of the second ejector spring 54, the second rotating seat 5 moves towards the direction away from the mounting seat 13, so that the first disk tooth 21 and the second disk tooth 22 are far away from each other, the limiting effect of the connector 14 on the mounting seat 13 is further removed, then the operator unscrews the second rotating seat 5, under the limiting action of the guide rod 52, the mounting seat 13 and the second rotating seat 5 synchronously rotate, the piston rod 11 is driven to rotate to reset, after the piston rod 11 rotates to reset, the operator screws the threaded sleeve 55 again, so that the second rotating seat 5 is abutted against the mounting seat 13 again, and the first disk tooth 21 and the second disk tooth 22 are further engaged again to limit the rotation of the mounting seat 13 and the piston rod 11, the rotational resetting of the piston rod 11 is completed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. A brake cylinder, includes cylinder body (1) and piston rod (11), piston rod (11) set up in cylinder body (1), its characterized in that: including mount pad (13) and connector (14), be provided with the drive arrangement who is used for driving piston rod (11) to remove in cylinder body (1), mount pad (13) set up the one end that stretches out cylinder body (1) at piston rod (11), connector (14) cover is established on piston rod (11), connect through spacing subassembly (2) between connector (14) and mount pad (13), still be equipped with control assembly (3) between connector (14) and mount pad (13), control assembly (3) are used for controlling spacing subassembly (2) drive connector (14) and mount pad (13) simultaneous movement or break away from.

2. A brake cylinder according to claim 1, wherein: spacing subassembly (2) include first dish tooth (21) and second dish tooth (22), first dish tooth (21) fixed connection is on connector (14), second dish tooth (22) fixed connection is on mount pad (13), just first dish tooth (21) and second dish tooth (22) intermeshing.

3. A brake cylinder according to claim 2, wherein: control assembly (3) are including first rotation seat (31), first rotation seat (31) slip cap is established on connector (14), the groove of stepping down (33) has been seted up towards one side of mount pad (13) in first rotation seat (31), draw-in groove (34) have been seted up on connector (14), the joint has first jump ring (35) in draw-in groove (34), first jump ring (35) are located the groove of stepping down (33), just first jump ring (35) butt is on the lateral wall of the groove of stepping down (33) towards mount pad (13), wear to be equipped with a plurality of locking bolt (32) on mount pad (13), each locking bolt (32) all run through mount pad (13) and with first rotation seat (31) threaded connection.

4. A brake cylinder according to claim 3, wherein: be provided with first top and push away spring (36) between first jump ring (35) and first rotation seat (31), first top pushes away spring (36) one end butt on groove (33) of stepping down towards the lateral wall of mount pad (13), the other end fixedly connected with push pedal (37) of first top push away spring (36), push pedal (37) butt is in the jump ring towards one side of first top push away spring (36).

5. A brake cylinder according to claim 3, wherein: be provided with between first rotation seat (31) and cylinder body (1) and be used for blockking first dust cover (4) of dust, just piston rod (11) axis direction is tensile can be followed in first dust cover (4), first caulking groove (41) have been seted up on cylinder body (1), inlay to establish in first caulking groove (41) first dust cover (4) one end, the first solid fixed ring (42) of the other end fixedly connected with of first dust cover (4), mounting groove (44) have been seted up on the periphery wall of first rotation seat (31), mounting groove (44) are opened towards one side of cylinder body (1), first solid fixed ring (42) sliding sleeve is established on mount pad (13), just first solid fixed ring (42) are located mounting groove (44), mount pad (13) are with first solid fixed ring (42) restriction in mounting groove (44).

6. A brake cylinder according to claim 1, wherein: control assembly (3) rotate seat (5) and threaded sleeve (55) including the second, the second rotates seat (5) and rotates through bearing (51) and connect on connector (14), the second rotates a plurality of guide bars (52) of fixedly connected with on seat (5), and is a plurality of the axis of guide bar (52) all is parallel with the axis of piston rod (11), and each guide bar (52) all slides and runs through mount pad (13), threaded sleeve (55) slip cover is established outside mount pad (13), fixedly connected with spacing ring (56) in threaded sleeve (55), spacing ring (56) butt deviates from the second in mount pad (13) and rotates one side of seat (5), threaded sleeve (55) and second rotate seat (5) threaded connection.

7. A brake cylinder according to claim 6, characterized in that: an accommodating groove (53) is formed in one side, facing the mounting seat (13), of the second rotating seat (5), a second pushing spring (54) is arranged in the accommodating groove (53), one end of the second pushing spring (54) abuts against the bottom wall of the accommodating groove (53), the other end of the second pushing spring (54) abuts against the mounting seat (13), and the second pushing spring (54) is in a compressed state.

8. A brake cylinder according to claim 6, characterized in that: the second rotates and is provided with second fender dirt cup (65) that are used for blockking dust between seat (5) and cylinder body (1), just piston rod (11) axis direction is tensile can be followed in second fender dirt cup (65), second caulking groove (66) have been seted up on cylinder body (1), second fender dirt cup (65) one end inlays and establishes in second caulking groove (66), the second keeps off the solid fixed ring (6) of other end fixedly connected with second of dirt cup (65), the solid fixed ring (6) sliding sleeve of second is established on threaded sleeve (55), fixedly connected with fender ring (61) is gone up in threaded sleeve (55), the solid fixed ring (6) one end butt of second is on fender ring (61), threaded sleeve (55) still is provided with second jump ring (63) that are used for restricting solid fixed ring (6) of second along piston rod (11) axial displacement.

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