A dry clutch assembly

Abstract

The utility model belongs to the field of clutch, is about a dry clutch assembly, it includes: clutch casing, the middle part of clutch casing can be detachably connected with bearing seat, install first bearing in bearing seat, install output shaft on first bearing, the output end of output shaft extends to the outside of bearing seat, the detachable connection with separation bearing support seat is had on clutch casing or bearing seat, separation bearing support seat is located in clutch casing, separation bearing support seat is worn on output shaft, the movable wear of output shaft has friction piece assembly and clutch pressure disc assembly, separation bearing assembly of clutch pressure disc assembly movable wear is worn on separation bearing support seat, still include the separation cylinder unit of hanging off, the separation cylinder unit of hanging off is movably connected on clutch casing, separation cylinder unit of hanging off is matched with separation bearing assembly. After adopting above -mentioned structure, its beneficial effect is: simple structure, compact, function is easy to realize.

Description

Technical Field

[0001] This utility model belongs to the field of clutch technology, specifically, it relates to a dry clutch assembly. Background Technology

[0002] The working devices of railway maintenance trains (such as tamping cars, sleeper replacement cars, and track inspection cars) are driven by a separate engine that drives the transmission shaft through a dry clutch to power the working devices. The working status of the working devices is controlled by disengaging and engaging the clutch.

[0003] Currently, dry clutches mainly use an air-assisted cylinder structure for disengagement. However, the air-assisted cylinder requires a dedicated air circuit system to control the clutch operation, which results in a large clutch size, many parts, and high cost. Therefore, it is necessary to improve it. Utility Model Content

[0004] To address the aforementioned problems in the prior art, this utility model provides a dry clutch assembly.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] As one aspect of this utility model, a dry clutch assembly is proposed, comprising: a clutch housing, a bearing seat detachably connected to the middle of the clutch housing, a first bearing installed in the bearing seat; the outer ring of the first bearing is connected to the bearing seat, and an output shaft is installed on the inner ring of the first bearing; the output end of the output shaft extends to the outside of the bearing seat.

[0007] A release bearing support is detachably connected to the clutch housing or bearing seat, and the release bearing support is located inside the clutch housing; the release bearing support passes through the output shaft, and the diameter of the through hole of the release bearing support is larger than the diameter of the output shaft.

[0008] The output shaft is movably fitted with a friction plate assembly and a clutch pressure plate assembly, and the release bearing assembly of the clutch pressure plate assembly is movably fitted on the release bearing support; the clutch pressure plate assembly covers the friction plate assembly inside.

[0009] It also includes a disengagement cylinder unit, which is movably connected to the clutch housing; the disengagement cylinder unit cooperates with the release bearing assembly.

[0010] Optionally, the first bearing is a double-row angular contact self-lubricating ball bearing.

[0011] Optionally, an output flange is detachably connected to the output end of the output shaft; a flange pressure plate is detachably connected to the output shaft, and the flange pressure plate presses and fixes the output flange.

[0012] Optionally, a speed measuring gear is installed on the output flange or output shaft; a speed sensor that cooperates with the speed measuring gear is installed on the clutch housing or bearing seat.

[0013] Optionally, a first oil seal is installed on each of the left and right sides of the first bearing.

[0014] Optionally, the disengagement cylinder unit includes a shift fork and a disengagement cylinder assembly rotatably connected within the clutch housing. The upper middle part of the shift fork is rotatably connected within the clutch housing. One end of the shift fork is connected to the release bearing assembly, and the other end of the shift fork is movably connected to the power output end of the disengagement cylinder assembly.

[0015] Optionally, the clutch also includes a support base, which is detachably connected to the clutch housing. A rotating shaft is rotatably connected to the support base via a bearing, and the shift fork is connected to the rotating shaft.

[0016] Optionally, the separation cylinder assembly includes a cylinder body, one end of which is detachably connected to a cylinder base, and the cylinder base or cylinder body is detachably connected to the clutch housing.

[0017] The other end of the cylinder body is detachably connected to the cylinder top cover; the cylinder base and the cylinder top cover form a sealed hydraulic cylinder body; an oil inlet is provided on the side of the cylinder body near the cylinder top cover, and the oil inlet is connected to the hydraulic cylinder body; an air vent is installed on the other side of the cylinder body near the cylinder top cover, and the air vent is connected to the hydraulic cylinder body.

[0018] A piston is movably inserted into the cylinder body of the hydraulic cylinder. One end of the piston moves through the upper cover of the hydraulic cylinder, and the other end of the piston is movably connected to a separation push rod. The other end of the separation push rod moves through the base of the hydraulic cylinder. An elastic element is sleeved on the rod of the piston.

[0019] One end of the separating push rod is spherical, and the other end of the piston has an inner ball socket. The spherical end of the separating push rod matches the inner ball socket of the piston.

[0020] The other end of the separating push rod is movably connected to the other end of the shift fork; the other end of the shift fork has a connecting and mating recess, and the other end of the separating push rod mates with the connecting and mating recess.

[0021] Optionally, a displacement sensor support is detachably connected to the upper cover of the cylinder, and the upper part of the piston rod is located in the cavity of the displacement sensor support; a displacement sensor is detachably connected to the cavity of the displacement sensor support; the piston rod has a mating blind hole for mounting a magnetic ring of the displacement sensor, and the magnetic ring is installed in the mating blind hole of the piston; a displacement indicator ring is provided on the piston rod, and the displacement indicator ring is located in the cavity of the displacement sensor support; a transparent observation cover is installed on the displacement sensor support.

[0022] Optionally, a push rod dust cover is also included. The push rod dust cover is fitted onto the release push rod. One end of the push rod dust cover is fixedly connected to the outer wall of the release push rod away from the piston, and the other end of the push rod dust cover is connected to a dust cover fixing plate installed on the cylinder base. A connecting groove that mates with the dust cover fixing plate is formed on the push rod dust cover.

[0023] The advantages of this dry clutch assembly are specifically reflected in the following aspects: simple and compact structure, easy to implement functions; double-row angular contact self-lubricating ball bearings are more reliable and have a longer service life than traditional radial ball bearings; enhanced sealing and dustproof function, resulting in a longer service life; hydraulic control of clutch disengagement simplifies the layout of the overall control system; the application of displacement sensors makes disengagement operation control more precise and greatly improves the comfort of equipment operation; reduced manufacturing costs and easier processing and manufacturing; and expandability, applicable to the design of similar maintenance train power drive devices. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0025] Figure 1 This is a schematic diagram of the dry clutch assembly of this utility model;

[0026] Figure 2 This is an exploded view of the dry clutch assembly of this utility model;

[0027] Figure 3 This is a cross-sectional view of the dry clutch assembly of this utility model. Figure 1 ;

[0028] Figure 4 This is a cross-sectional view of the dry clutch assembly of this utility model. Figure 2 ;

[0029] Figure 5 This is a schematic diagram of the separation cylinder assembly of this utility model. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] One embodiment of this application provides a dry clutch assembly, such as... Figures 1-5 As shown, it includes: a clutch housing 1, a bearing seat 2 detachably connected to the middle of the clutch housing 1 by fasteners, a first bearing 3 installed in the bearing seat 2; the first bearing 3 is a double-row angular contact self-lubricating ball bearing; the outer ring of the first bearing 3 is connected to the bearing seat 2, and an output shaft 4 is installed on the inner ring of the first bearing 3; the output end of the output shaft 4 extends to the outside of the bearing seat 2, and an output flange 5 is detachably connected to the output end of the output shaft 4; a flange pressure plate 6 is detachably connected to the output shaft 4 by fasteners, and the flange pressure plate 6 presses and fixes the output flange 5.

[0032] A release bearing support 9 is detachably connected to the clutch housing 1 or bearing seat 2 by fasteners. The release bearing support 9 is located inside the clutch housing 1. The release bearing support 9 passes through the output shaft 4. The diameter of the through hole of the release bearing support 9 is larger than the diameter of the output shaft 4, so that the release bearing support 9 will not interfere with the output shaft 4.

[0033] The output shaft 4 is movably fitted with a friction plate assembly 10 and a clutch pressure plate assembly 11. The release bearing assembly 12 of the clutch pressure plate assembly 11 is movably fitted onto a release bearing support 9. The release bearing assembly 12 can drive the clutch pressure plate assembly 11 to move laterally on the release bearing support 9. The clutch pressure plate assembly 11 covers the friction plate assembly 10. During installation, the input end of the output shaft 4 is rotatably connected to the bearing on the flywheel of the engine. The clutch pressure plate assembly 11 is detachably connected to the end face of the flywheel of the engine by fasteners. The friction plate assembly 10 is located between the end face of the flywheel and the clutch pressure plate assembly 11. The clutch pressure plate assembly 11 may or may not press the friction plate assembly 10 against the end face of the flywheel. It should be noted that the structure and working process of the friction plate assembly 10, the clutch pressure plate assembly 11, and the release bearing assembly 12 are all existing known technologies and will not be described in detail here.

[0034] It also includes a disengagement cylinder unit 13, which is movably connected to the clutch housing 1. The disengagement cylinder unit 13 cooperates with the release bearing assembly 12. Under normal conditions, the clutch pressure plate assembly 11 presses against the friction plate assembly 10. When separation is required, the disengagement cylinder unit 13 drives the release bearing assembly 12 to move on the release bearing support 9 towards the output flange 5, thereby separating the clutch pressure plate assembly 11 from the friction plate assembly 10. When the power of the disengagement cylinder unit 13 is removed, the clutch pressure plate assembly 11 returns to its original position and cooperates with the friction plate assembly 10.

[0035] In one embodiment, such as Figure 4 As shown, a speed measuring gear 7 is installed on the output flange 5 or the output shaft 4; a speed sensor 8 that cooperates with the speed measuring gear 7 is installed on the clutch housing 1 or the bearing seat 2, and the speed sensor 8 senses the rotational speed of the output shaft 4; it should be noted that the structure and working principle of the speed sensor 8 are existing known technologies, and will not be described in detail here.

[0036] In one embodiment, such as Figure 4 As shown, first oil seals 14 are installed on the left and right sides of the first bearing 3 to prevent foreign matter from entering the first bearing 3 and to improve its service life.

[0037] In one embodiment, such as Figures 3-5 As shown, the disengagement cylinder unit 13 includes a shift fork 131 and a disengagement cylinder assembly 132 rotatably connected to the clutch housing 1. The upper middle part of the shift fork 131 is rotatably connected to the clutch housing 1. One end of the shift fork 131 is connected to the release bearing assembly 12, and the other end of the shift fork 131 is movably connected to the power output end of the disengagement cylinder assembly 132.

[0038] In one embodiment, such as Figures 2-4 As shown, it also includes a support seat 133, which is detachably connected to the clutch housing 1 by fasteners. A rotating shaft 134 is rotatably connected to the support seat 133 by bearings. The shift fork 131 is connected to the rotating shaft 134, and the two ends of the shift fork 131 form a seesaw action with the rotating shaft 134 as the fulcrum.

[0039] In one embodiment, such as Figure 5 As shown, the separation cylinder assembly 132 includes a cylinder body 1321. One end of the cylinder body 1321 is detachably connected to a cylinder base 1322 by fasteners. The cylinder base 1322 or the cylinder body 1321 is detachably connected to the clutch housing 1 to fix the separation cylinder assembly 132.

[0040] The other end of the cylinder body 1321 is detachably connected to the cylinder upper cover 1323 by fasteners; the cylinder base 1322 and the cylinder upper cover 1323 form a sealed hydraulic cylinder body 1321; an oil inlet 13211 is provided on the side of the cylinder body 1321 near the cylinder upper cover 1323, and the oil inlet 13211 is connected to the hydraulic cylinder body; an air vent 13212 is installed on the other side of the cylinder body 1321 near the cylinder upper cover 1323, and the air vent 13212 is connected to the hydraulic cylinder body.

[0041] A piston 1324 is movably disposed within the cylinder body 1321. One end of the piston 1324 movably passes through the upper cover 1323 of the cylinder, and the other end of the piston 1324 is movably connected to a separation push rod 1325. The other end of the separation push rod 1325 movably passes through the cylinder base 1322. An elastic element 1326, which is a spring, is sleeved on the rod portion of the piston 1324. A spring washer 13231 is connected to the inner surface of the upper cover 1323 of the cylinder to block the elastic element 1326.

[0042] One end of the separating push rod 1325 is spherical, and the other end of the piston 1324 has an inner ball socket. The spherical end of the separating push rod 1325 is matched with the inner ball socket of the piston 1324.

[0043] The other end of the separating push rod 1325 is movably connected to the other end of the shift fork 131; the other end of the shift fork 131 has a connecting and mating recess, and the other end of the separating push rod 1325 mates with the connecting and mating recess.

[0044] In one embodiment, such as Figure 5 As shown, a displacement sensor support 1327 is detachably connected to the cylinder upper cover 1323 via fasteners. The upper part of the piston rod 1324 is located within the cavity of the displacement sensor support 1327. A displacement sensor 1328 is detachably connected to the cavity of the displacement sensor support 1327 via fasteners. It should be noted that the structure and operation of the displacement sensor 1328 are existing known technologies and will not be described in detail here. The piston rod 1324 has a mating blind hole for mounting a magnetic ring 13281 of the displacement sensor 1328. The magnetic ring 13281 is installed in the mating blind hole of the piston 1324 via a retaining ring. A displacement indicator ring 1329 is provided on the piston rod 1324. The displacement indicator ring 1329 is located within the cavity of the displacement sensor support 1327 and is used to determine the relative position of the piston 1324. A transparent observation cover 13210 is installed on the displacement sensor support 1327 for easy observation of the displacement.

[0045] In one embodiment, such as Figure 5As shown, it also includes a push rod dust cover 13213, which is sleeved on the separation push rod 1325. One end of the push rod dust cover 13213 is fixedly connected to the outer wall of the separation push rod 1325 away from the piston 1324, such as by tight fit or binding. The other end of the push rod dust cover 13213 is connected to a dust cover fixing plate 13214 installed on the cylinder base 1322. The push rod dust cover 13213 has a connecting groove that mates with the dust cover fixing plate 13214. The dust cover fixing plate 13214 is installed on the cylinder base 1322 by a retaining ring 13215.

[0046] When the dry clutch assembly is disengaged, hydraulic oil enters from the inlet, pushing the piston to the left. This causes the release push rod to push the shift fork, which, using the lever principle, pushes the release bearing assembly to overcome the leftward pull of the disc spring in the clutch pressure plate assembly and move to the right. At this point, the clutch pressure plate assembly separates from the friction plate assembly, and the engine flywheel spins freely. The power from the engine to the train's working device is then cut off.

[0047] When the hydraulic oil is cut off, the release bearing assembly is pulled to the left by the leftward pulling force of the disc spring of the clutch pressure plate assembly and moves to the left. The friction plate assembly is pressed against the engine flywheel by the clutch pressure plate. At this time, the engine power is transmitted to the output shaft through the friction plate assembly. The output flange drives the train's working device through the drive shaft. At this time, the other end of the shift fork moves to the right, thus pushing the piston to move to the right and compressing the elastic element inside the piston.

[0048] The function of the elastic element is to prevent the piston release push rod from falling out of the ball socket of the shift fork during the piston's rapid rightward movement, which could lead to clutch assembly failure.

[0049] The function of the displacement sensor is to monitor the detailed position of the friction plate assembly in real time during the left and right movement of the piston, and, in conjunction with the real-time rotational speed of the output shaft, control the pressure of the hydraulic oil in the piston cylinder. This ensures that the engine can smoothly engage or disengage under different load conditions without stalling, and improves the operational comfort of the mechanical equipment. The displacement sensor also allows for real-time monitoring of the actual wear of the friction plates, ensuring that users can replace them promptly, completely preventing equipment failures during operation and improving the safe operation of the equipment.

[0050] In addition, the transparent cover is made of transparent acrylic sheet, and there are scale lines on the transparent cover to indicate the wear condition of the friction plate assembly. This allows for manual observation of the position of the displacement indicator ring while the machine is stopped, which can help to make a preliminary judgment on the wear condition of the friction plate assembly and realize the daily inspection and maintenance of mechanical equipment.

[0051] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0052] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0053] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0054] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0055] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0056] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0057] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A dry clutch assembly, characterized in that, It includes: a clutch housing, A bearing housing is detachably connected to the middle of the clutch housing, and a first bearing is installed inside the bearing housing; the outer ring of the first bearing is connected to the bearing housing, and an output shaft is installed on the inner ring of the first bearing; the output end of the output shaft extends to the outside of the bearing housing. A release bearing support is detachably connected to the clutch housing or bearing seat, and the release bearing support is located inside the clutch housing; the release bearing support passes through the output shaft, and the diameter of the through hole of the release bearing support is larger than the diameter of the output shaft. The output shaft is movably fitted with a friction plate assembly and a clutch pressure plate assembly, and the release bearing assembly of the clutch pressure plate assembly is movably fitted on the release bearing support; the clutch pressure plate assembly covers the friction plate assembly inside. It also includes a disengagement cylinder unit, which is movably connected to the clutch housing; the disengagement cylinder unit cooperates with the release bearing assembly.

2. The dry clutch assembly as described in claim 1, characterized in that, The first bearing is a double-row angular contact self-lubricating ball bearing.

3. The dry clutch assembly as described in claim 1, characterized in that, An output flange is detachably connected to the output end of the output shaft; a flange pressure plate is detachably connected to the output shaft, and the flange pressure plate presses and fixes the output flange.

4. The dry clutch assembly as described in claim 3, characterized in that, A speed measuring gear is installed on the output flange or output shaft; a speed sensor that cooperates with the speed measuring gear is installed on the clutch housing or bearing seat.

5. The dry clutch assembly as described in claim 1, characterized in that, The first bearing is equipped with a first oil seal on its left and right sides respectively.

6. The dry clutch assembly as described in claim 1, characterized in that, The disengagement cylinder unit includes a shift fork and a disengagement cylinder assembly rotatably connected within the clutch housing. The upper middle part of the shift fork is rotatably connected within the clutch housing. One end of the shift fork is connected to the release bearing assembly, and the other end of the shift fork is movably connected to the power output end of the disengagement cylinder assembly.

7. The dry clutch assembly as described in claim 6, characterized in that, It also includes a support base, which is detachably connected to the clutch housing. A rotating shaft is rotatably connected to the support base via a bearing, and the shift fork is connected to the rotating shaft.

8. The dry clutch assembly as described in claim 6, characterized in that, The separation cylinder assembly includes a cylinder body, one end of which is detachably connected to a cylinder base, and the cylinder base or cylinder body is detachably connected to the clutch housing. The other end of the cylinder body is detachably connected to the cylinder top cover; the cylinder base and the cylinder top cover form a sealed hydraulic cylinder body; an oil inlet is provided on the side of the cylinder body near the cylinder top cover, and the oil inlet is connected to the hydraulic cylinder body; an air vent is installed on the other side of the cylinder body near the cylinder top cover, and the air vent is connected to the hydraulic cylinder body. A piston is movably inserted into the cylinder body of the hydraulic cylinder. One end of the piston moves through the upper cover of the hydraulic cylinder, and the other end of the piston is movably connected to a separation push rod. The other end of the separation push rod moves through the base of the hydraulic cylinder. An elastic element is sleeved on the rod of the piston. One end of the separating push rod is spherical, and the other end of the piston has an inner ball socket. The spherical end of the separating push rod matches the inner ball socket of the piston. The other end of the separating push rod is movably connected to the other end of the shift fork; the other end of the shift fork has a connecting and mating recess, and the other end of the separating push rod mates with the connecting and mating recess.

9. The dry clutch assembly as described in claim 8, characterized in that, A displacement sensor support is detachably connected to the upper cover of the cylinder, and the upper part of the piston rod is located in the cavity of the displacement sensor support; a displacement sensor is detachably connected to the cavity of the displacement sensor support; the piston rod has a mating blind hole for installing a magnetic ring of the displacement sensor, and the magnetic ring is installed in the mating blind hole of the piston; a displacement indicator ring is provided on the piston rod, and the displacement indicator ring is located in the cavity of the displacement sensor support; a transparent observation cover is installed on the displacement sensor support.

10. The dry clutch assembly as described in claim 8, characterized in that, It also includes a push rod dust cover, which is fitted onto the release push rod. One end of the push rod dust cover is fixedly connected to the outer wall of the release push rod away from the piston, and the other end of the push rod dust cover is connected to a dust cover fixing plate installed on the cylinder base. A connecting groove that mates with the dust cover fixing plate is formed on the push rod dust cover.

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