Wet brake structure

Abstract

The utility model discloses a wet brake structure in the field of brake, which comprises a rocker arm component for driving a brake pressure plate to rotate and a reset component for driving the brake pressure plate to reset after rotating, the reset component and the rocker arm component are detachably mounted on a shell and extend into the shell to act on the brake pressure plate in the shell, and the rocker arm component and the reset component are detachably mounted on the shell. The brake pressure plate and the wet clutch are arranged in the shell, and the brake pressure plate is located on the surface of the wet clutch. The shell is installed outside the gearbox for use, and rotation of the brake pressure plate is converted into radial movement of the brake pressure plate through the ball vortex and the steel balls. The wet-type brake structure is composed of a plurality of unitized assemblies, the assemblies are detachably installed, the later maintenance cost is low, the structure is simple and compact, the wet-type brake structure is an externally-hung structure and has good heat dissipation performance, work of the brake pressure plate is conducted inside the shell, and the brake pressure plate is not prone to falling off. External foreign matters are prevented from influencing the braking effect of the whole structure.

Description

Technical Field

[0001] This utility model relates to the field of braking structures, and in particular to a wet braking structure. Background Technology

[0002] With the development of domestic agriculture, tractor operations face heavy loads and long continuous working hours. Dry braking performance is greatly affected by the environment, primarily facing overheating issues: during downhill or heavy-load operations, frictional heat can cause a rapid rise in brake disc temperature, leading to thermal fade, a significant decrease in braking force, or even brake failure. Moisture / mud effects: In farmland operations, water, mud, or crop residue may adhere to the brake surface, reducing the coefficient of friction and causing braking delays or slippage. In severe cases, this can cause brake lock-up. Dry braking relies on mechanical friction; the friction pads wear quickly, easily leading to dust accumulation and high maintenance costs.

[0003] A wet clutch is a device used to transmit or cut off torque, consisting of steel plates and friction plates. Utility Model Content

[0004] The purpose of this invention is to provide a wet braking structure, comprising several modular components that can be detached, with low maintenance costs, and which, when used outside the gearbox, provides good heat dissipation.

[0005] To solve the above technical problems, the following technical solution is adopted:

[0006] This utility model provides a wet braking structure, including a rocker arm assembly for driving the brake pressure plate to rotate and a reset assembly for resetting the brake pressure plate after rotation. The reset assembly and the rocker arm assembly are detachably mounted on the housing and extend into the housing to act on the brake pressure plate inside the housing. The brake pressure plate and the wet clutch are disposed inside the housing, and the brake pressure plate is located on the surface of the wet clutch.

[0007] The housing is installed on the outside of the gearbox for use, and the gearbox's drive shaft passes through the housing and is installed in conjunction with a wet clutch assembly inside the housing;

[0008] Both the brake pressure plate and the interior of the outer casing are provided with ball vortexes, and steel balls are placed on the ball vortexes. The rotation of the brake pressure plate is converted into radial movement of the brake pressure plate through the ball vortexes and the steel balls, thereby driving the structures inside the wet clutch to engage with each other and achieve the braking effect.

[0009] Optionally, the rocker arm assembly includes a rocker arm, a connecting rod, and a dial head. The dial head is installed in the middle of the connecting rod, the rocker arm is disposed at one end of the connecting rod, the connecting rod is installed in the rocker arm hole of the housing, and the connecting rod is further provided with a radial oil seal, a radial oil seal, a bearing, a bearing, and a washer. The radial oil seal is located between the bearing and the rocker arm, and the radial oil seal is located between the bearing and the washer.

[0010] Optionally, the connecting rod is splined with the dial.

[0011] Optionally, the housing includes a shell and an end cap, which are connected by fixing bolts. A ball vortex is provided at the bottom of the inner part of the shell, which partially mates with the steel ball. A plurality of ball vortices are arranged in a ring at uniform intervals. A tension spring bolt hole is also provided on the outer periphery of the ball vortex, and a plurality of tension spring bolt holes are arranged in a ring at uniform intervals. The tension spring bolt hole is used to install the reset assembly. A shaft hole is provided on the shell, and the drive shaft is connected to the wet clutch assembly through the shaft hole.

[0012] Optionally, the end cap is installed in conjunction with the housing by fixing bolts, the end cap is provided with a shaft hole for the transmission shaft to pass through, and the end cap is also provided with a mounting groove for installing an O-ring.

[0013] Optionally, the reset assembly includes a tension spring bolt, a return tension spring, and an O-ring. One end of the return tension spring has a hook, which is disposed on the brake pressure plate. A washer is provided between the tension spring bolt and the outer surface of the housing. The O-ring is located between the inner surface of the housing and the return tension spring.

[0014] Optionally, the brake pressure plate has an annular structure, with a first branch and a second branch on the outer periphery of the annular structure. The first branch has a dial groove that mates with the rocker arm assembly. Several second branches are evenly spaced on the outer side wall of the brake pressure plate, and each second branch has a tension spring groove for mates with the reset assembly.

[0015] Optionally, the brake pressure plate is provided with a ball vortex, and a plurality of ball vortices are arranged in a ring at uniform intervals on the surface of the brake pressure plate. Each ball vortex includes a vortex hole that partially mates with a steel ball and an extension platform on the side of the vortex hole. The extension platform is higher than the height of the vortex hole and is a curved surface structure that gradually rises on one side of the vortex hole.

[0016] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0017] 1. The wet braking structure provided by this utility model consists of several modular components that are detachable and easy to install, resulting in low maintenance costs. Individual internal components are replaceable, and the structure is simple and compact. The wet braking structure is an external structure that is installed outside the gearbox, providing good heat dissipation. It eliminates the need for a forced lubrication mechanism. The reset component is designed and installed separately on the outer shell, effectively reducing the casting difficulty of the outer shell, reducing the overall thickness of the braking structure, and thus reducing the overall space of the braking structure. The brake pressure plate operates inside the outer shell, preventing external foreign objects from affecting the braking effect of the entire structure.

[0018] 2. In the wet braking structure provided by this utility model, the connecting rod and the shift head in the rocker arm assembly are connected by a spline. The shift head achieves force rotational transmission through spline tooth engagement. Compared with the traditional tie rod structure, this structure is compact and can be applied in narrow spaces, and has less wear and a longer service life. It can transmit torque synchronously, avoiding the problems of idle travel and flexible deformation of traditional tie rods.

[0019] 3. The wet braking structure provided by this utility model is equipped with radial oil seals and O-rings to seal the internal structure of the outer shell, prevent foreign objects from entering, and ensure the braking function of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the wet braking structure in this embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the disassembled structure of the wet braking structure in an embodiment of this utility model;

[0022] Figure 3 This is a partial structural schematic diagram of the wet braking structure in an embodiment of this utility model;

[0023] Figure 4 This is a schematic diagram of the rocker arm assembly structure in an embodiment of this utility model;

[0024] Figure 5 This is a schematic diagram of the shell structure in an embodiment of this utility model;

[0025] Figure 6 This is a schematic diagram of the reset component structure in an embodiment of this utility model;

[0026] Figure 7 This is one of the schematic diagrams of the brake pressure plate structure in the embodiments of this utility model;

[0027] Figure 8 This is the second schematic diagram of the brake pressure plate structure in the embodiments of this utility model;

[0028] Figure 9 This is a schematic diagram of the end cap structure in an embodiment of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Rocker arm assembly; 101. Rocker arm; 102. Connecting rod; 103. Radial oil seal one; 104. Radial oil seal two; 105. Bearing one; 106. Bearing two; 107. Shift head; 108. Washer; 2. Housing; 201. Shaft hole; 202. Ball swivel one; 203. Tension spring bolt hole; 204. Mounting hole; 205. Through hole; 3. Reset assembly; 301. Tension spring bolt; 302. Return tension spring; 303. O-ring one; 4. Brake pressure plate; 401. Support one; 402. Shift head groove; 403. Ball swivel two; 404. Steel ball; 405. Support two; 406. Tension spring groove; 5. Wet clutch housing; 6. End cover; 601. Shaft hole; 602. O-ring two; 603. Fixing bolt. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use.

[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and 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 of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0033] Example 1

[0034] like Figure 1 , Figure 2 As shown, this embodiment provides a wet braking structure, including a rocker arm assembly 1, a housing, a reset assembly 3, a brake pressure plate 4, and a wet clutch. The rocker arm assembly 1 is used to drive the brake pressure plate 4 to rotate, and the reset assembly 3 is used to reset the brake pressure plate 4 after rotation. Both the rocker arm assembly 1 and the reset assembly 3 are detachably mounted on the housing and both act on the brake pressure plate 4. Ball vortices are provided on the bottom of both the brake pressure plate 4 and the housing, and steel balls are placed inside the ball vortices. The upper and lower ends of the steel balls are respectively placed in the ball vortices on the bottom of the brake pressure plate 4 and the housing. An extension platform higher than the vortex hole is also provided on the ball vortex of the brake pressure plate 4. When the steel ball 404 is located in the vortex hole, the wet clutch pack below the brake pressure plate 4 is not engaged. When the steel ball 404 is located on the extension platform of the brake pressure plate 4, the brake pressure plate 4 moves downward, thereby pushing the steel plate and friction plate in the wet clutch pack to engage with each other, thereby achieving the braking effect.

[0035] like Figure 3 As shown, the dial 107 of the rocker arm assembly 1 acts on the brake pressure plate 4. The rocker arm assembly 1 is connected to the drive device. When the dial 107 on it is driven, the brake pressure plate 4 is driven to rotate, so that the steel ball 404 moves relative to the brake pressure plate 4 to the extension platform. Since the height of the extension platform is higher than the inside of the vortex hole, the brake pressure plate 4 is pushed downward, realizing the conversion of the rotation of the brake pressure plate 4 into the radial movement of the brake pressure plate 4.

[0036] The reset assembly 3 includes a return spring 302. One end of the return spring 302 acts on the brake pressure plate 4. When the brake pressure plate 4 rotates at a certain angle and moves downward a certain distance, the return spring 302 is stretched. When the rotational force on the rocker arm 101 is removed, the rebound force of the return spring 302 acts on the brake pressure plate 4, causing the brake pressure plate 4 to return to its original state. The steel ball 404 is located in the vortex hole of the two ball vortexes.

[0037] The housing is installed outside the gearbox, allowing the wet braking structure to dissipate heat through external ventilation during use, resulting in good heat dissipation. No forced lubrication mechanism is required. The gearbox's drive shaft passes through the housing and is installed in conjunction with the wet clutch assembly inside the housing.

[0038] The wet braking structure provided in this embodiment is simple and compact. The several structures that make up the wet braking structure are all individual modular unit designs and can be detachably installed together, saving manpower and material resources during later maintenance and replacement. The rotation of the brake pressure plate 4 is converted into radial movement of the brake pressure plate 4 through the ball vortex and steel ball 404. By setting the reset component 3, the brake pressure plate 4 is reset after rotation, and the brake is released.

[0039] Example 2

[0040] like Figure 2 , Figure 3 , Figure 5 As shown, this embodiment provides a wet braking structure based on Embodiment 1. The outer shell includes a housing 2 and an end cap 6. The housing 2 is provided with a support for mounting the rocker arm assembly 1 and an annular part for mounting other components. The upper and lower end faces of the support are closed, and a through hole 205 is provided on the support. One end face of the annular part is open, and the inner cavity is connected to the inner cavity of the support. The open end of the annular part is sealed and installed by the end cap 6. A shaft hole 201 is provided in the middle of the unopened end face of the annular part. A plurality of ball vortexes 202 are provided on the inner wall of the end face. A tension spring bolt 203 is provided on the outer periphery of the ball vortexes 202, penetrating the end face of the housing 2. A mounting hole 204 is provided on the edge of the open end face of the annular part. The end cap 6 is installed at the open end of the annular part by a fixing bolt 603 passing through the mounting hole on the end cap 6 and the mounting hole 204 on the annular part.

[0041] like Figure 2 , Figure 9 As shown, the end cover 6 and the opening of the housing 2 are installed together by fixing bolts 603 to achieve the sealing of the brake pressure plate 4, reset assembly 3 and wet clutch 5 inside the housing 2. The end cover 6 is provided with a mounting groove, and an O-ring 602 is provided in the mounting groove. The O-ring 602 is used to achieve the sealed installation of the housing 2 and the end cover 6. The end cover has a shaft hole 601 for the transmission shaft of the gearbox to pass through. The entire wet braking structure is an external structure with good heat dissipation effect.

[0042] like Figure 3 , Figure 4 , Figure 5As shown, the rocker arm assembly 1 also includes a connecting rod 102 and a dial 107. The rocker arm 101 is disposed at one end of the connecting rod 102, and the dial 107 is disposed in the middle of the connecting rod 102. The connecting rod 102 is mounted on the through hole 205 of the housing 2 through bearing 105 and bearing 106. The rocker arm 101 is located outside the housing 2. Radial oil seal 103, radial oil seal 104, and washer 108 are also provided on the connecting rod 102. The connecting rod 102 is connected to the through hole 205 on the housing 2 through the two bearings. The two radial oil seals are respectively sleeved on both ends of the connecting rod 102 and located on the housing 2. Within the upper and lower ends of body 2, radial oil seal 103 is positioned between bearing 105 and rocker arm 101, and radial oil seal 104 is positioned between washer 108 and bearing 106. Washer 108 is positioned between the end face of housing 2 and one end of connecting rod 102. Washer 108 and rocker arm 101 are located at the upper and lower ends of connecting rod 102, respectively, and on the outer end face of housing 2. Washer 108 and rocker arm 101 protect the two oil seals and reduce external impact. The two radial oil seals form a rotary seal for connecting rod 102, preventing external impurities from entering the interior of housing 2. Both bearings are self-lubricating composite bearings.

[0043] The dial 107 and the connecting rod 102 are connected by a spline. The spline connection is achieved through the meshing of the spline groove on the connecting rod 102 and the spline teeth on the dial 107. Force is transmitted through the meshing of the spline teeth. Compared with the traditional tie rod structure, this structure is compact and can be used in narrow spaces, and it has less wear and a longer service life. It can transmit torque synchronously, avoiding the problems of free travel and flexible deformation of traditional tie rods.

[0044] like Figure 3 , Figure 7 As shown, the reset assembly 3 has three parts, including a tension spring bolt 301, a return tension spring 302, and an O-ring 303. The tension spring bolt 301 is installed on the housing 2, and the return tension spring 302 is sleeved on the tension spring bolt 301. A gasket is provided between the outer surface of the housing 2 and the end of the tension spring bolt 301. The O-ring 303 is sleeved on the tension spring bolt 301 and is located at the connection between the tension spring bolt 301 and the housing 2, sealing the connection between the housing 2 and the tension spring bolt 301 to prevent foreign objects from entering the housing 2. The end of the return tension spring 302 located at the end of the tension spring bolt 301 is provided with a hook, which cooperates with the tension spring groove 406 on the brake pressure plate 4. When the brake pressure plate 4 rotates, it pulls the return tension spring 302 to stretch.

[0045] like Figure 3 , Figure 7 , Figure 8 , Figure 9As shown, the brake pressure plate 4 has a ring-shaped structure with one first branch 401 and three second branches 405. The end of the first branch 401 has a dial groove 402 that connects to the dial 107 and is used to position the brake pressure plate 4 within the housing 2. The brake pressure plate 4 also has three second branches, which cooperate with the reset assembly 3. Each second branch has a tension spring groove 406, and one end of the return tension spring 302 is installed in the tension spring groove 406. The return tension spring 302 is stretched when the brake pressure plate 4 rotates due to the limiting effect of the tension spring groove 406. The three second branches 405 are evenly spaced circumferentially on the outer wall of the brake judgment mechanism and are aligned with the lower surface. The first branch 401 is aligned with both the upper and lower surfaces of the brake ring.

[0046] The brake pressure plate 4 is provided with several ball vortexes 403. Each ball vortex 403 includes a vortex hole and an extension platform located on the side of the vortex hole. The extension platform is higher than the vortex hole. The extension platform is a curved surface structure that gradually rises on one side of the vortex hole. The brake pressure plate 4 is pushed downward by the steel ball 404 moving to the extension platform, which engages the wet clutch 5 at the bottom to achieve the braking effect.

[0047] The size of the ball vortex 202 partially matches that of the steel ball 404. After the brake pressure plate 4 is installed in the housing 2, the ball vortex 202 and the ball vortex 403 are aligned one-to-one. When the brake pressure plate 4 rotates, the steel ball 404 cannot move within the ball vortex 202, causing the steel ball 404 to detach from the vortex hole of the ball vortex 403 and reach the extension platform, driving the brake pressure plate 4 to move downward and pushing the wet clutch 5 to engage, thus achieving the braking effect.

[0048] The wet braking structure provided in this embodiment is an external structure. The drive shaft passes through the housing 2, brake pressure plate, wet clutch housing and end cover 6 in sequence, which has a good heat dissipation effect. All components are detachably connected, resulting in low maintenance costs and a compact structure. The dial 107 on the rocker arm 101 assembly is connected to the connecting rod 102 by a spline to achieve stable transmission. The brake pressure plate 4 is reset by setting a return spring 302, which reduces the thickness of the braking structure.

[0049] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A wet braking structure, characterized in that, It includes a rocker arm assembly for driving the brake pressure disc to rotate and a reset assembly for resetting the brake pressure disc after driving it to rotate. The reset assembly and the rocker arm assembly are detachably mounted on the housing and extend into the housing to act on the brake pressure disc inside the housing. The brake pressure disc and the wet clutch are disposed inside the housing, and the brake pressure disc is located on the surface of the wet clutch. The housing is installed on the outside of the gearbox for use, and the gearbox's drive shaft passes through the housing and is installed in conjunction with a wet clutch assembly inside the housing; Both the brake pressure plate and the interior of the outer casing are provided with ball vortexes, and steel balls are placed on the ball vortexes. The rotation of the brake pressure plate is converted into radial movement of the brake pressure plate through the ball vortexes and the steel balls, thereby driving the structures inside the wet clutch to engage with each other and achieve the braking effect.

2. The wet braking structure according to claim 1, characterized in that, The rocker arm assembly includes a rocker arm, a connecting rod, and a dial head. The dial head is installed in the middle of the connecting rod, and the rocker arm is disposed at one end of the connecting rod. The connecting rod is installed in the rocker arm hole of the housing. The connecting rod is also provided with a radial oil seal, a radial oil seal, a bearing, a bearing, and a washer. The radial oil seal is located between the bearing and the rocker arm, and the radial oil seal is located between the bearing and the washer.

3. The wet braking structure according to claim 2, characterized in that, The connecting rod is connected to the dial spline.

4. The wet braking structure according to claim 1, characterized in that, The housing includes a shell and an end cap, which are connected by fixing bolts. A ball vortex is provided at the bottom of the inner part of the shell, which partially mates with the steel ball. Several ball vortices are arranged in a ring at uniform intervals. Tension spring bolt holes are also provided on the outer periphery of the ball vortex, and several tension spring bolt holes are arranged in a ring at uniform intervals. The tension spring bolt holes are used to install the reset assembly. A shaft hole is provided on the shell, and the drive shaft is connected to the wet clutch via the shaft hole.

5. The wet braking structure according to claim 4, characterized in that, The end cap is installed in conjunction with the housing by fixing bolts. The end cap is provided with a shaft hole for the transmission shaft to pass through, and the end cap is also provided with a mounting groove for installing O-ring II.

6. The wet braking structure according to claim 4, characterized in that, The reset assembly includes a tension spring bolt, a return tension spring, and an O-ring. One end of the return tension spring has a hook, which is disposed on the brake pressure plate. A washer is provided between the tension spring bolt and the outer surface of the housing. The O-ring is located between the inner surface of the housing and the return tension spring.

7. The wet braking structure according to claim 1, characterized in that, The brake pressure plate has a ring-shaped structure. On the outer periphery of the ring-shaped structure, there are two branches. The first branch has a dial groove that cooperates with the rocker arm assembly. Several second branches are evenly distributed and spaced on the outer side wall of the brake pressure plate. The second branch has a tension spring groove for cooperating with the reset assembly.

8. The wet braking structure according to claim 1, characterized in that, The brake pressure plate is provided with a ball vortex, and a number of ball vortices are evenly spaced in a ring on the surface of the brake pressure plate. Each ball vortex includes a vortex hole that partially mates with a steel ball and an extension platform on the side of the vortex hole. The extension platform is higher than the height of the vortex hole and is a curved surface structure that gradually rises on one side of the vortex hole.

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