Control device, parking cylinder and brake

Abstract

The utility model provides a kind of control device, parking cylinder and brake.Control device includes shell, is housed in shell and is movably connected in shell along the control piece of first direction, is equipped in the elastic piece between shell and control piece, is connected to the pull rope of control piece, open cavity is formed on shell, the opening direction of open cavity is perpendicular to first direction, control device further includes the connecting structure of detachably connected to control piece, pull rope is connected to control piece by connecting structure, at least part connecting structure is located in open cavity.In the utility model, operator can pull pull rope at the position far from parking cylinder, make parking cylinder from parking brake state relief, and, the shell of control device is equipped with open cavity, open cavity can facilitate operator to dismount connecting structure, to connect pull rope to control piece, and make shell can obtain longer length with less material, compared with prior art, the structure of control device is more simple, use more convenient.

Description

Technical Field

[0001] This utility model relates to the field of rail vehicle braking technology, and in particular to a control device, a parking cylinder, and a brake. Background Technology

[0002] When a rail vehicle stops, the brake shoes are pressed against the wheels. The brake system includes a parking cylinder, where a spring is compressed and outputs braking force, allowing the brake shoes to maintain pressure on the wheels. When the rail vehicle needs to start, the spring in the parking cylinder needs to be released from its compressed state. In existing technology, a ratchet is installed in the parking cylinder; releasing the ratchet allows the parking cylinder to release. Whether the ratchet can rotate is controlled by a control device on the parking cylinder. This control device has a telescopic control component that can extend and retract to limit the ratchet's rotation. Furthermore, to enable remote operation of the control device, a pull rope is provided; pulling the rope moves the control component.

[0003] The existing control device for parking cylinders has a connection structure between the pull rope and the control component located inside the housing of the control device. The cover of the housing must first be separated from the housing of the control device to open the housing before the pull rope can be connected to the control component through the connection structure. After the pull rope is connected to the control component, the cover also needs to be connected to the housing. The control device has a complex structure and is inconvenient to install. Utility Model Content

[0004] The purpose of this utility model is to provide a control device, parking cylinder, and brake that are simple in structure and easy to install.

[0005] To achieve the above objectives, this utility model provides a control device for controlling whether a parking cylinder maintains parking braking. The device includes a housing, a control member housed within the housing and movably connected to the housing along a first direction, an elastic member disposed between the housing and the control member, and a pull rope connected to the control member. The pull rope and the elastic member are used to drive the control member to move relative to the housing along the first direction. The housing has a port for the control member to extend out of the housing, and an open cavity is formed on the housing. The opening direction of the open cavity is perpendicular to the first direction. The control device further includes a connecting structure detachably connected to the control member. The pull rope is connected to the control member through the connecting structure, and at least a portion of the connecting structure is located within the open cavity.

[0006] As a further improvement of this utility model, the housing includes a head and a tail spaced apart along a first direction, and two connecting portions connecting the head and the tail. The two connecting portions are spaced apart along a second direction perpendicular to the first direction. The head, the tail, and the two connecting portions enclose and form the open cavity.

[0007] As a further improvement of this utility model, the head, the tail and the two connecting parts are integrally formed.

[0008] As a further improvement of this utility model, the connection structure includes two connectors and a connecting member. Of the two connectors, one is detachably connected to the control member and connects the connecting member to the control member, and the other is connected to the connecting member. The control device includes two pull ropes respectively connected to the two connectors.

[0009] As a further improvement of this utility model, the two connectors are respectively a first connector and a second connector. The first connector includes a first stud portion threaded to the control component and a first post head connected to the first stud portion. The connector is disposed between the control component and the first post head, and the control component and the first post head clamp and fix the connector.

[0010] As a further improvement of this utility model, the connector is provided with a rope-receiving cavity and a slot extending through both ends in its axial direction. The slot extends from the rope-receiving cavity to the outer peripheral surface of the connector along the radial direction of the connector. The rope-receiving cavity includes a first rope-receiving segment and a second rope-receiving segment arranged along the axial direction of the connector. The pull rope includes a rope body passing through the first rope-receiving segment and a rope head connected to one end of the rope body and at least partially located in the second rope-receiving segment. The radial dimension of the rope head is not less than the radial dimension of the first rope-receiving segment, and the width of the slot is not less than the radial dimension of the rope body.

[0011] As a further improvement of this utility model, the housing has a first chamber and a second chamber arranged along a first direction, and a partition separating the first chamber and the second chamber. The port is located at the end of the first chamber away from the second chamber. The control member includes a pin passing through the partition and an intermediate member located at least partially in the second chamber and connecting the pin and the connecting structure. The partition has a through hole matching the diameter of the pin. The diameter of the intermediate member is larger than the diameter of the through hole. The elastic member is disposed in the first chamber and located between the pin and the partition.

[0012] As a further improvement of this utility model, the pin and the intermediate component are detachably connected together.

[0013] As a further improvement of this utility model, the outer periphery of the pin is formed with a first plane extending in a first direction, and the sidewall of the through hole includes a second plane extending in the first direction. The first plane and the second plane are close to each other and parallel to each other.

[0014] As a further improvement of this utility model, the control device includes a protective cover connected to the housing, the protective cover surrounding the open cavity, and the connecting structure located inside the protective cover.

[0015] This utility model also provides a parking cylinder, which includes a cylinder body and the aforementioned control device, wherein the control device is detachably connected to the cylinder body;

[0016] The parking cylinder also includes a ratchet rotatably disposed relative to the cylinder body. The ratchet is provided with a plurality of insertion portions spaced apart along its circumferential direction. The control element moves along a first direction to insert and retract the insertion portions.

[0017] This utility model also provides a parking cylinder, which includes the parking cylinder described above.

[0018] Beneficial effects: In the control device, parking cylinder, and brake provided in this embodiment, the operator can pull the pull rope from a position away from the parking cylinder to release the parking cylinder from the parking brake state, reducing the operator's workload and difficulty. In addition, the housing of the control device has an open cavity, which allows the operator to easily install and disassemble the connection structure to connect the pull rope to the control component, and allows the housing to achieve a longer length with less material. Compared with the prior art, the structure of the control device is simpler and more convenient to use. Attached Figure Description

[0019] Figure 1 This is a front view of a brake provided in an embodiment of the present invention; Figure 2 Figure 1 A front view of the ratchet mounted on the parking cylinder; Figure 3 for Figure 1 A front view of the control device in the middle; Figure 4 for Figure 3 A front view of the control device after the protective cover has been removed; Figure 5 for Figure 3 A cross-sectional view of the control device in the middle after being cut along the AA direction; Figure 6 for Figure 5 An enlarged view of the left half; Figure 7 for Figure 3 A front view of the control components, connecting structure, and pull rope; Figure 8 for Figure 7 An exploded view of the structure shown; Figure 9 for Figure 7Cross-sectional view of the connector and the pull rope; Figure 10 for Figure 7 Side view of the connector and pull rope; Figure 11 for Figure 3 A front view of the pin in the middle; Figure 12 for Figure 3 A cross-sectional view of the shell.

[0020] In the picture: 100. Brake; 101. Parking cylinder; 1011. Cylinder body; 1012. Ratchet; 1013. Insertion part; 102. Control device; 10. Shell; 11. Port; 12. First connecting hole; 13. Open cavity; 141. Head; 142. Tail; 1421. Rope hole; 143. Connecting part; 15. First chamber; 16. Second chamber; 17. Partition; 171. Perforation; 1711. Second plane; 20. Control component; 21. Annular protrusion; 22. Pin; 221. First plane; 23. Intermediate component; 24. Screw; 30. Elastic components; 40. Pull rope; 41. Rope body; 42. Rope head; 50. Connecting structure; 51. Connector; 51a. First connector; 51b. Second connector; 511a. First stud portion; 511b. Second stud portion; 512a. First stud head; 512b. Second stud head; 513. Rope receiving cavity; 5131. First rope receiving section; 5132. Second rope receiving section; 514. Slot; 52. Connector; 60. Sheath; 70. Protective cover; 71. First part; 72. Second part; 73. Connecting part. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any modifications to the mechanism, method, or function made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0022] The terms used herein, such as "up," "down," "left," "right," "front," and "back," indicating spatial relative position, are for illustrative purposes to describe the relationship of one feature relative to another, as shown in the accompanying drawings. It is understood that, depending on the product's placement, these terms may be intended to include different orientations besides those shown in the figures, and should not be construed as limiting the claims. Furthermore, the descriptive term "horizontal" used herein is not entirely equivalent to being perpendicular to the direction of gravity, and allows for a certain angle of inclination.

[0023] like Figure 1-2 As shown, one embodiment of the present invention provides a brake 100. The brake 100 includes a parking cylinder 101. In use, the brake 100 is installed on the bogie of a rail vehicle. When the brake 100 brakes the wheels of the rail vehicle, the parking cylinder 101 is in a parking braking state, maintaining the brake 100's braking of the rail vehicle. At this time, the rail vehicle cannot move and is in a parked state. When the rail vehicle needs to be started again, the parking cylinder 101 releases from the parking braking state, allowing the brake 100 to release the braking of the rail vehicle.

[0024] The parking cylinder 101 includes a cylinder body 1011 and a ratchet 1012 rotatably disposed relative to the cylinder body 1011. The working state of the parking cylinder 101 can be controlled by controlling whether the ratchet 1012 rotates. Specifically, after the parking cylinder 101 applies a parking brake, restricting the rotation of the ratchet 1012 allows the parking cylinder 101 to maintain the parking brake, thus maintaining the brake 100 on the rail vehicle. After releasing the restriction on the rotation of the ratchet 1012, the parking cylinder 101 can release from the parking brake state, and the brake 100 can release the brake on the rail vehicle. It should be noted that controlling whether the parking cylinder 101 maintains the parking brake by restricting the rotation of the ratchet 1012 is existing technology, and its specific implementation structure will not be described in detail. The focus of this utility model is to provide a control device 102 for controlling whether the ratchet 1012 can rotate.

[0025] The control device 102 is detachably connected to the cylinder block 1011. When the control device 102 malfunctions, the operator can remove the control device 102 from the cylinder block 1011 for repair, or connect a new control device 102 to the cylinder block 1011.

[0026] Continue to combine Figure 3-6 As shown, the control device 102 includes a housing 10, a control member 20, an elastic member 30, and a pull cord 40. The control member 20 is housed within the housing 10 and movably connected to the housing 10 along a first direction. The first direction is when the control device 102 is in a position... Figure 3The left and right directions are shown in the diagram. An elastic element 30 is disposed between the housing 10 and the control element 20. A pull rope 40 is connected to the control element 20. The elastic element 30 and the pull rope 40 are used for the control element 20 to move relative to the housing 10 in a first direction. Pulling the pull rope 40 allows the control element 20 to move in the first direction. Since the elastic element 30 is disposed between the housing 10 and the control element 20, when the pull rope 40 pulls the control element 20 to move in the first direction, the elastic element 30 elastically deforms to accumulate elastic potential energy. When the pull rope 40 stops pulling the control element 20, the elastic potential energy of the elastic element 30 is released, which can drive the control element 20 to reset. It is conceivable that the elastic element 30 is elastically extended and retracted along the first direction, and the direction in which the pull rope 40 pulls the control element 20 is opposite to the direction in which the elastic element 30 drives the control element 20 to reset.

[0027] The elastic element 30 can be a compression spring, with its two ends in the extension and retraction direction respectively abutting against the control element 20 and the housing 10. Specifically, the compression spring can be sleeved on the control element 20 for positioning, and the control element 20 has annular protrusions 21 formed on it for abutting against the compression spring.

[0028] The housing 10 has a port 11, and the control member 20 can extend out of the housing 10 from the port 11 in a first direction. The ratchet 1012 has a plurality of insertion parts 1013 arranged at intervals along its circumferential direction. The control member 20 extends out of the housing 10 from the port 11 in the first direction and can be inserted into one of the insertion parts 1013, preventing the ratchet 1012 from rotating. When it is necessary to release the rotation restriction of the ratchet 1012, the pull rope 40 is pulled, and the insertion part 1013 retracts into the housing 10, thereby withdrawing the insertion part 1013 and allowing the ratchet 1012 to rotate.

[0029] To allow the control device 102 to be detachably connected to the cylinder body 1011, the housing 10 has a first connecting hole 12 near the cylinder body 1011, and the cylinder body 1011 has a second connecting hole (not shown in the figure) corresponding to the first connecting hole 12. The first connecting hole 12 and the second connecting hole are connected by a fastener. The fastener can be a screw, the first connecting hole 12 is a through hole for the screw to pass through, and the second connecting hole is a threaded hole for threaded connection with the screw.

[0030] In this embodiment, an open cavity 13 is formed on the housing 10, and the opening direction of the open cavity 13 is perpendicular to the first direction. The control device 102 also includes a connecting structure 50 detachably connected to the control member 20. The pull rope 40 is connected to the control member 20 through the connecting structure 50, and at least a portion of the connecting structure 50 is located within the open cavity 13. The opening direction of the open cavity 13 is perpendicular to the first direction, which should be understood as allowing an object to enter and exit the open cavity 13 in a direction perpendicular to the first direction.

[0031] In the control device 102 provided in this embodiment, the operator can pull the pull rope 40 at a position away from the parking cylinder 101 to release the parking cylinder 101 from the parking brake state, which reduces the workload and difficulty of the operator. In addition, the housing 10 of the control device 102 is provided with an open cavity 13, which makes it easy for the operator to install and disassemble the connection structure to connect the pull rope 40 to the control component 20, and allows the housing 10 to obtain a longer length with less material. Compared with the prior art, the structure of the control device 102 is simpler and easier to use.

[0032] The housing 10 includes a head 141 and a tail 142 spaced apart along a first direction, and two connecting portions 143 connecting the head 141 and the tail 142. The two connecting portions 143 are spaced apart along a second direction perpendicular to the first direction. The head 141, the tail 142 and the two connecting portions 143 surround an open cavity 13.

[0033] With the above configuration, the open cavity 13 extends through both sides of the housing 10. Both sides of the open cavity 13 are open, which is beneficial for the operator to install and disassemble the connecting structure 50 to connect the pull rope 40 to the control component 20.

[0034] As can be imagined, in other embodiments of this utility model, the open cavity 13 may extend only to a single side of the housing 10.

[0035] In this embodiment, the head 141, tail 142, and two connecting parts 143 are integrally formed. Thus, the head 141, tail 142, and two connecting parts 143 can be manufactured simultaneously by casting or other methods, and the head 141, tail 142, and two connecting parts 143 can be reliably connected together.

[0036] A rope hole 1421 is provided on the tail section 142, and the rope hole 1421 extends through the tail section 142 in a first direction. The pull rope 40 is disposed through the rope hole 1421. The control device 102 may also include a sheath 60 made of flexible material. The sheath 60 is inserted into the side of the rope hole 1421 away from the head 141, and part of it is located inside the rope hole 1421, while the other part is located outside the rope hole 1421. The pull rope 40 is disposed through the sheath 60. The sheath 60 can prevent the pull rope 40 from being excessively bent, thus ensuring the service life of the pull rope 40.

[0037] like Figure 7-8As shown, the connection structure 50 includes two connectors 51 and a connector 52. One connector 51 is detachably connected to the control component 20 and connects the connector 52 to the control component 20; the other connector is connected to the connector 52. Let the two connectors 51 be the first connector 51a and the second connector 51b. The first connector 51a is detachably connected to the control component 20. When it is connected to the control component 20, the entire connection structure 50 is connected to the control component 20; when it is separated from the control component 20, the entire connection structure 50 is separated from the control component 20. The first connector 51a not only connects itself to the control component 20 but also connects the connector 52 to the control component 20, making the connection structure 50 more compact. The position of the connector 52 can be fixed relative to the control component 20. The second connector 51b is connected to the connector 52, and its position relative to the control component 20 is also fixed.

[0038] The control unit 20 includes two pull ropes 40 respectively connected to two connectors 51. The operator can pull the two pull ropes 40 to drive the control unit 20 to move in a first direction. The two pull ropes 40 facilitate the operator's application of force, and the force pulling the control unit 20 is distributed across the two pull ropes 40, making the pull ropes 40 less prone to damage. Even after prolonged use, if one pull rope 40 is damaged, the operator can still pull the control unit 20 using the other pull rope, ensuring the normal operation of the control device 102.

[0039] The first connector 51a includes a first stud portion 511a threadedly connected to the control component 20, and a first head portion 512a connected to the first stud portion 511a. The first stud portion 511a is connected to the control component 20 via a threaded structure. An operator can easily connect or disconnect the first connector 51a from the control component 20 by tightening the first connector 51a, making operation convenient. The first head portion 512a may be hexagonal prism-shaped to allow the operator to tighten the first connector 51a using a wrench or other tools.

[0040] The connector 52 is disposed between the control member 20 and the first post head 512a. When the first connector 51a is tightened, the first post head 512a can press the connector 52 onto the control member 20, and the control member 20 and the first post head 512a can clamp and fix the connector 52. The first stud portion 511a can pass through the connector 52, so that the first connector 51a can more reliably connect the control member 20 and the connector 52.

[0041] The second connector 51b can be configured with the same structure as the first connector 51a, including a second stud portion 511b and a second stud head 512b connected to the second stud portion 511b. The second stud portion 511b is threadedly connected to the connector 52. By turning the second connector 51b, the operator can connect the second connector 51b to the connector 52 or separate the second connector 51b from the connector 52.

[0042] It is conceivable that in other embodiments of this utility model, the pull rope 40 may be provided as a single piece, and the connecting structure 50 may include a connector 51 detachably connected to the control member 20.

[0043] like Figure 9-10 As shown, in this embodiment, the connector 51 has a rope-receiving cavity 513 and a slot 514 extending through both ends in its axial direction, and the slot 514 extends from the rope-receiving cavity 513 to the outer peripheral surface of the connector 51 along the radial direction of the connector 51. The rope-receiving cavity 513 includes a first rope-receiving segment 5131 and a second rope-receiving segment 5132 arranged along the axial direction of the connector 51. The pull rope 40 includes a rope body 41 and a rope head 42 connected to one end of the rope body 41. The rope body 41 passes through the first rope-receiving segment 5131, and at least part of the rope head 42 is located within the second rope-receiving segment 5132. The radial dimension of the rope head 42 is not less than the radial dimension of the first rope-receiving segment 5131, and the width of the slot 514 is not less than the radial dimension of the rope body 41, allowing the rope body 41 to enter the first rope-receiving segment 5131 and the second rope-receiving segment 5132 through the slot 514.

[0044] With the above configuration, when connecting the pull rope 40 to the connector 51, the rope body 41 first enters the first rope-receiving section 5131 and the second rope-receiving section 5132 through the slot 514. Then, the pull rope 40 is pulled, causing the rope head 42 to enter the second rope-receiving section 5132 from the end away from the first rope-receiving section 5131. Since the radial dimension of the rope head 42 is not less than the radial dimension of the first rope-receiving section 5131, the rope head 42 cannot detach from the connector 51 through the first rope-receiving section 5131. When the pull rope 40 is pulled in the direction from the second rope-receiving section 5132 towards the first rope-receiving section 5131, the rope head 42 can abut against the connector 51, thereby enabling the connector 51 to move. It can be seen that the slot 514 on the connector 51 makes connecting the connector 51 and the pull rope 40 more convenient.

[0045] The width of the slot 514 should not be less than the radial dimension of the rope body 41, and should also not be greater than the radial dimension of the rope head 42. In this way, the rope head 42, after being located in the second rope section 5132, cannot be separated from the connector 51 through the slot 514.

[0046] Given that the radial dimension of the rope head 42 is not less than the radial dimension of the first rope-accommodating segment 5131, the rope body 41 can pass through the first rope-accommodating segment 5131, and the rope head 42 can be accommodated in the second rope-accommodating segment 5132, it can be deduced that: the radial dimension of the rope body 41 is less than the radial dimension of the first rope-accommodating segment 5131, the radial dimension of the rope head 42 is less than the radial dimension of the second rope-accommodating segment 5132, the radial dimension of the rope head 42 is greater than the radial dimension of the rope body 41, and the radial dimension of the first rope-accommodating segment 5131 is less than the radial dimension of the second rope-accommodating segment 5132.

[0047] like Figure 6-8 As shown, the housing 10 has a first chamber 15 and a second chamber 16 arranged along a first direction, and a partition 17 separating the first chamber 15 and the second chamber 16. The aforementioned port 11 is located at the end of the first chamber 15 away from the second chamber 16. The control member 20 includes a pin 22 and a connector 52. The pin 22 passes through the partition 17, with a portion located in the first chamber 15 and another portion located in the second chamber 16. The intermediate member 23 is at least partially located in the second chamber 16 and connects the pin 22 and the connecting structure 50.

[0048] The partition 17 has a through hole 171 that matches the diameter of the pin 22. The diameter of the intermediate part 23 is larger than the diameter of the through hole 171. In this way, the intermediate part 23 cannot enter the first chamber 15 and can restrict the entire control part 20 from detaching from the housing 10 at the port 11. After the pin 22 extends a certain length out of the housing 10 from the port 11, it cannot continue to move.

[0049] The elastic element 30 is disposed in the first chamber 15 and located between the pin 22 and the partition 17. The aforementioned annular protrusion is located on the pin 22, and the two ends of the elastic element 30 abut against the partition 17 and the annular protrusion, respectively.

[0050] In this embodiment, the pin 22 and the intermediate member 23 are detachably connected together. During the installation of the control component 20, the pin 22 and the intermediate member 23 are initially separated. Then, the pin 22 is inserted into the first chamber 15 and passes through the partition 17 to the second chamber 16. Subsequently, the intermediate member 23, located in the second chamber 16, is connected to the pin 22. The detachable design of the pin 22 and the intermediate member 23 facilitates the installation of the control component 20 onto the housing 10. Specifically, the pin 22 and the intermediate member 23 can be detachably connected together using fasteners such as screws 24.

[0051] like Figure 11-12As shown, the outer periphery of the pin 22 has a first plane 221 extending in a first direction, and the sidewall of the through hole 171 includes a second plane 1711 extending in the first direction. The first plane 221 and the second plane 1711 are close to each other and parallel to each other. Under the constraint of the first plane 221 and the second plane 1711, the pin 22 and the entire control component 20 cannot rotate. Two first planes 221 may be provided on the outer periphery of the pin 22, with the two first planes 221 arranged opposite each other. The sidewall of the through hole 171 may also include two oppositely arranged second planes 1711.

[0052] like Figure 5 As shown, the control device 102 also includes a protective cover 70, which surrounds the open cavity 13. The connecting structure 50 is located inside the protective cover 70. The protective cover 70 protects the connecting structure 50 and part of the pull rope 40, preventing them from getting dusty or corroded by water. The protective cover 70 can be made of flexible materials such as rubber and can be separated from the housing 10.

[0053] The protective cover 70 specifically includes a first part 71 surrounding the head 141, a second part 72 surrounding the tail 142, and a connecting part 73 connecting the first part 71 and the second part 72. A sealing structure can be provided between the first part 71 and the head 141, and between the second part 72 and the tail 142, to ensure the sealing between the protective cover 70 and the housing 10.

[0054] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0055] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A control device for controlling whether a parking cylinder maintains a parking brake, comprising a housing, a control member housed in the housing and movably connected to the housing in a first direction, an elastic member disposed between the housing and the control member, and a pull rope connected to the control member, the pull rope and the elastic member being used to drive the control member to move relative to the housing in the first direction, wherein the housing has a port for the control member to extend out of the housing, characterized in that, An open cavity is formed on the housing, and the opening direction of the open cavity is perpendicular to the first direction. The control device also includes a connecting structure detachably connected to the control component. The pull rope is connected to the control component through the connecting structure, and at least part of the connecting structure is located inside the open cavity.

2. The control device according to claim 1, characterized in that, The housing includes a head and a tail spaced apart along a first direction, and two connecting portions connecting the head and the tail. The two connecting portions are spaced apart along a second direction perpendicular to the first direction. The head, the tail, and the two connecting portions enclose the open cavity.

3. The control device according to claim 2, characterized in that, The head, the tail, and the two connecting parts are integrally formed.

4. The control device according to claim 1, characterized in that, The connection structure includes two connectors and a connector. One of the two connectors is detachably connected to the control component and connects the connector to the control component. The other connector is connected to the connector. The control device includes two pull ropes respectively connected to the two connectors.

5. The control device according to claim 4, characterized in that, The two connectors are a first connector and a second connector. The first connector includes a first stud portion threaded to the control component and a first post head connected to the first stud portion. The connector is disposed between the control component and the first post head, and the control component and the first post head clamp and fix the connector.

6. The control device according to claim 4, characterized in that, The connector has a rope-receiving cavity and a slot extending through both ends in its axial direction. The slot extends from the rope-receiving cavity to the outer peripheral surface of the connector in the radial direction. The rope-receiving cavity includes a first rope-receiving segment and a second rope-receiving segment arranged in the axial direction of the connector. The pull rope includes a rope body passing through the first rope-receiving segment and a rope head connected to one end of the rope body and at least partially located in the second rope-receiving segment. The radial dimension of the rope head is not less than the radial dimension of the first rope-receiving segment, and the width of the slot is not less than the radial dimension of the rope body.

7. The control device according to claim 1, characterized in that, The housing contains a first chamber and a second chamber arranged in a first direction, and a partition separating the first chamber and the second chamber. The port is located at the end of the first chamber away from the second chamber. The control element includes a pin passing through the partition and an intermediate member located at least partially in the second chamber and connecting the pin and the connecting structure. The partition has a through hole matching the diameter of the pin. The diameter of the intermediate member is larger than the diameter of the through hole. The elastic member is disposed in the first chamber and located between the pin and the partition.

8. The control device according to claim 7, characterized in that, The pin and the intermediate component are detachably connected together.

9. The control device according to claim 7, characterized in that, The outer periphery of the pin has a first plane extending in a first direction, and the sidewall of the perforation includes a second plane extending in the first direction. The first plane and the second plane are close to each other and parallel to each other.

10. The control device according to claim 1, characterized in that, The control device includes a cover connected to the housing, the cover surrounding the open cavity, and the connection structure located inside the cover.

11. A parking cylinder, characterized in that, Includes a cylinder body and a control device as described in any one of claims 1-10, wherein the control device is detachably connected to the cylinder body; The parking cylinder also includes a ratchet rotatably disposed relative to the cylinder body. The ratchet is provided with a plurality of insertion portions spaced apart along its circumferential direction. The control element moves along a first direction to insert and retract the insertion portions.

12. A brake, characterized in that, Includes the parking cylinder as described in claim 11.

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