Wet brakes and working machinery

Abstract

The present invention discloses a wet brake and an operating machine. The wet brake comprises a housing, a brake mechanism and a transmission assembly. The brake mechanism comprises a friction plate and a brake assembly. The friction plate is arranged in the housing and sleeved on a driving shaft. The brake assembly is movably arranged in the housing and used to switch between a braking position and a release position. The brake assembly presses the friction plate against the housing in the braking position. The transmission assembly comprises a cantilever shaft and a shifting block. The cantilever shaft is rotatably arranged on the housing and has a cantilever portion extending into the housing. The shifting block is arranged on the cantilever portion and is drivingly connected to the brake assembly. The cantilever shaft is used to drive the shifting block to swing so that the shifting block drives the brake assembly to move from the release position to the braking position. The cantilever portion of the cantilever shaft is spaced apart from the inner wall of the housing, so that the cantilever shaft is cantilevered relative to the housing, which simplifies the assembly steps, makes the assembly convenient and quick, and improves the assembly efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of brakes, and in particular relates to a wet brake and an operating machine. Background Art

[0002] At present, wet brakes are widely used in tractor driving systems due to their advantages of fast response, stable and reliable braking, and long service life. However, the assembly of wet brakes involves the combination and installation of multiple parts. The parts of wet brakes are not only numerous, but also of different shapes. They need to be assembled in a certain order and with precision, which increases the complexity and time consumption of assembly. That is, the existing wet brake assembly method is cumbersome and the assembly efficiency is low, which not only affects the production efficiency, but also increases the production cost. In addition, the existing wet brake has a complex structure, the oil does not flow smoothly in the wet brake, and the oil supply effect is poor, which leads to rapid wear of the friction plate and affects the service life. Summary of the invention

[0003] In view of the above-mentioned defects or shortcomings, the present invention provides a wet brake and an operating machine, aiming to solve the technical problems of the existing wet brake assembly method being complicated and having low assembly efficiency.

[0004] In order to achieve the above object, the present invention provides a wet brake, the wet brake comprising:

[0005] case;

[0006] The brake mechanism comprises a friction plate and a brake assembly, wherein the friction plate is arranged in the housing and sleeved on the drive shaft, and the brake assembly is movably arranged in the housing and used to switch between a braking position and a release position, and the brake assembly presses the friction plate against the housing in the braking position;

[0007] The transmission assembly includes a cantilever shaft and a shift block. The cantilever shaft is rotatably arranged on the shell and has a cantilever portion extending into the shell. The shift block is arranged on the cantilever portion and is drivingly connected to the brake assembly. The cantilever shaft is used to drive the shift block to swing so that the shift block drives the brake assembly to move from a release position to a brake position.

[0008] In an embodiment of the present invention, the shell includes a cover shell and a support seat, the friction plate is arranged in the cover shell, the support seat is connected to the cover shell, the brake assembly is movably arranged on the support seat and is located in the cover shell, the brake assembly presses the friction plate against the cover shell in the braking position, the cantilever shaft is rotatably arranged on the cover shell, the cantilever part extends into the cover shell and is spaced apart from the support seat.

[0009] In an embodiment of the present invention, the brake assembly includes a brake pressure disc and a brake push ball. The brake pressure disc is movably arranged on a support seat. A pushing groove is provided on the side of the brake pressure disc facing away from the friction plate. The size of the pushing groove is gradually expanded from the bottom of the pushing groove to the groove mouth of the pushing groove. The brake push ball is arranged between the pushing groove and the support seat. A shifting groove is provided on the brake pressure disc for a shifting block to extend into. The shifting block swings and drives the brake pressure disc to rotate, so that the brake push ball pushes the brake pressure disc along the groove wall of the pushing groove from the release position to the braking position.

[0010] In the embodiment of the present invention, a guide boss and a receiving groove are provided on the support seat on one side facing the friction plate, the brake pressure disc is movably sleeved on the guide boss, and the brake push ball is arranged between the pushing groove and the receiving groove;

[0011] And / or, a limit step is provided in the cover shell, a friction braking surface is provided on the limit step, the friction plate is located between the brake pressure disc and the friction braking surface, and the brake pressure disc presses the friction plate against the friction braking surface in the braking position.

[0012] In an embodiment of the present invention, the cantilever shaft also includes a mounting portion, which is rotatably disposed on the cover shell, one end of the cantilever portion is connected to the mounting portion, and the other end of the cantilever portion is spaced apart from the support seat, and a limit spring is provided on the cantilever portion, which is located on the side of the shift block facing away from the mounting portion.

[0013] In an embodiment of the present invention, the mounting portion includes a mounting section and a transition section, the transition section is rotatably disposed on the cover shell, one end of the transition section is connected to the cantilever portion, and the other end of the transition section is connected to the mounting section, the mounting section extends out of the cover shell, and a mounting step is formed between the mounting section and the transition section, and the transmission assembly also includes a crank, which is disposed on the mounting section and abuts against the mounting step.

[0014] In the embodiment of the present invention, a first sealing ring is provided on the transition section, a sealing groove is provided on the cover shell at a position corresponding to the first sealing ring, and the first sealing ring is located in the sealing groove and abuts against the crank.

[0015] In the embodiment of the present invention, an oil inlet channel is opened on the shell, and the oil inlet channel has an oil inlet port and a connecting port. The oil inlet port is used to communicate with the oil filling chamber of the gearbox, and the connecting port is connected with the inner cavity of the shell.

[0016] In the embodiment of the present invention, a communication groove is provided on the inner wall of the housing, the communication groove is arranged corresponding to the friction plate, and the communication port is communicated with the communication groove.

[0017] In order to achieve the above object, the present invention further provides a working machine, the working machine comprises a gearbox, and the gearbox comprises the wet brake according to the above.

[0018] Through the above technical solution, the wet brake and working machine provided by the embodiment of the present invention have the following beneficial effects:

[0019] In the technical solution of the present invention, the friction plate and the brake assembly are both arranged in the shell, the friction plate is used to be connected to the drive shaft, and the friction plate can rotate with the drive shaft when the brake assembly is in the released position, the cantilever shaft is arranged through the shell and can rotate relative to the shell, the shift block is connected to the cantilever part of the cantilever shaft, the cantilever shaft rotates to drive the shift block to swing through the cantilever part, the shift block swings and drives the brake assembly, the brake assembly can move toward the friction plate to move from the released position to the braking position, and the brake assembly presses the friction plate on the shell when it is in the braking position to limit the rotation of the friction plate and thereby brake the drive shaft, and the cantilever part of the cantilever shaft is spaced apart from the inner wall of the shell, so that the cantilever shaft is cantilevered relative to the shell, when assembling the wet brake, it is only necessary to connect the shift block to the cantilever part and rotatably connect the cantilever shaft to the shell, which simplifies the assembly steps, makes the assembly convenient and quick, and improves the assembly efficiency.

[0020] Furthermore, an oil inlet channel is provided on the shell, and the oil inlet port of the oil inlet channel is connected with the oil filling chamber of the gearbox, and the connecting port of the oil inlet channel is connected with the inner cavity of the shell, so that the oil in the oil filling chamber can flow from the oil inlet port into the oil inlet channel, and flow from the connecting port along the oil inlet channel into the inner cavity of the shell. The friction plate is arranged in the shell so that the friction plate can be directly immersed in the oil, the oil flows smoothly and the oil supply effect is good, which accelerates the heat dissipation speed of the friction plate, reduces the wear of the friction plate, prolongs the service life of the friction plate, and improves the braking reliability.

[0021] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative work. In the accompanying drawings:

[0023] Figure 1 is a schematic diagram of the assembly structure of a wet brake according to an embodiment of the present invention;

[0024] Figure 2 is a schematic diagram of the exploded structure of a wet brake according to an embodiment of the present invention at a viewing angle;

[0025] Figure 3 is a schematic diagram of an exploded structure of a wet brake according to an embodiment of the present invention from another perspective;

[0026] Figure 4is a schematic cross-sectional structural diagram of a wet brake at one viewing angle according to an embodiment of the present invention;

[0027] Figure 5 is a schematic cross-sectional structural diagram of a wet brake according to an embodiment of the present invention at another viewing angle;

[0028] Figure 6 is a schematic structural diagram of a transmission assembly in a wet brake according to an embodiment of the present invention;

[0029] Figure 7 It is a schematic structural diagram of a wet brake and a gearbox housing according to an embodiment of the present invention.

[0030] Description of Reference Numerals

[0031] 10 Shell 2212 Dial slot

[0032] 11 Cover 2213 Pushing ramp

[0033] 111 Limiting step 222 Braking push ball

[0034] 112 friction brake surface 30 transmission component

[0035] 113 Sealing groove 31 Cantilever shaft

[0036] 12 Support seat 311 installation part

[0037] 121 guide boss 3111 installation section

[0038] 122 accommodating groove 3112 transition section

[0039] 13 Oil inlet channel 3113 Installation step

[0040] 131 Oil inlet 312 Cantilever

[0041] 132 communication port 32 shift block

[0042] 14 Connecting groove 33 Limiting spring

[0043] 15 Oil outlet channel 34 Crank

[0044] 20 Braking mechanism 35 First sealing ring

[0045] 21 Friction plate 200 Drive shaft

[0046] 22 Brake assembly 300 Gearbox

[0047] 221 Brake pressure disc 301 Oil filling chamber

[0048] 2211 Push Trough DETAILED DESCRIPTION

[0049] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0050] The wet brake of the present invention will be described below with reference to the accompanying drawings.

[0051] like Figures 1 to 4 As shown, the present invention provides a wet brake, which includes a housing 10, a brake mechanism 20 and a transmission assembly 30. The brake mechanism 20 includes a friction plate 21 and a brake assembly 22. The friction plate 21 is arranged in the housing 10 and sleeved on the drive shaft 200. The brake assembly 22 is movably arranged in the housing 10 and is used to switch between a braking position and a release position. The brake assembly 22 presses the friction plate 21 against the housing 10 in the braking position; the transmission assembly 30 includes a cantilever shaft 31 and a shift block 32. The cantilever shaft 31 is rotatably arranged on the housing 10 and has a cantilever portion 312 extending into the housing 10. The shift block 32 is arranged on the cantilever portion 312 and is drivingly connected to the brake assembly 22. The cantilever shaft 31 is used to drive the shift block 32 to swing so that the shift block 32 drives the brake assembly 22 to move from the release position to the braking position.

[0052] Specifically, the friction plate 21 and the brake assembly 22 are both arranged in the housing 10, the friction plate 21 is used to connect with the drive shaft 200, and the friction plate 21 can rotate with the drive shaft 200 when the brake assembly 22 is in the release position, the cantilever shaft 31 is arranged through the housing 10 and can rotate relative to the housing 10, the shift block 32 is connected to the cantilever portion 312 of the cantilever shaft 31, the cantilever shaft 31 rotates to drive the shift block 32 to swing through the cantilever portion 312, the shift block 32 swings and drives the brake assembly 22, and the brake assembly 22 can move toward the friction plate 21 to release itself. The brake assembly 22 moves from the braking position to the braking position, and when in the braking position, the friction plate 21 is pressed against the housing 10 to limit the rotation of the friction plate 21 and thereby brake the drive shaft 200. In addition, the cantilever portion 312 of the cantilever shaft 31 is spaced apart from the inner wall of the housing 10, so that the cantilever shaft 31 is cantilevered relative to the housing 10. When assembling the wet brake, it is only necessary to connect the shift block 32 to the cantilever portion 312 and rotatably connect the cantilever shaft 31 to the housing 10, which simplifies the assembly steps, makes the assembly convenient and quick, and improves the assembly efficiency.

[0053] In an embodiment of the present invention, the shell 10 includes a cover shell 11 and a support seat 12, the friction plate 21 is arranged in the cover shell 11, the support seat 12 is connected to the cover shell 11, the brake assembly 22 is movably arranged on the support seat 12 and is located in the cover shell 11, the brake assembly 22 presses the friction plate 21 against the cover shell 11 in the braking position, the cantilever shaft 31 is rotatably arranged on the cover shell 11, and the cantilever part 312 extends into the cover shell 11 and is spaced apart from the support seat 12.

[0054] like Figures 2 to 4 As shown, the friction plate 21 is connected to the drive shaft 200, the cover 11 is arranged outside the friction plate 21, the support seat 12 is connected to the cover 11, and the brake assembly 22 is movably arranged on the support seat 12 on the side facing the cover 11, the cantilever shaft 31 passes through the cover 11 so that the cantilever part 312 extends into the cover 11, and the shifting block 32 on the cantilever part 312 can drive the brake assembly 22 to move from the release position to the braking position in the cover 11. When the brake assembly 22 is in the braking position, the friction plate 21 is pressed against the cover 11 The brake drive shaft 200 is mounted on the cover 11, and when assembling the wet brake, the cantilever shaft 31 is rotatably installed on the cover 11, and the shift block 32 is connected to the cantilever portion 312, so that the shift block 32 is drivingly connected to the brake assembly 22, and then the support seat 12 is connected to the cover 11. This not only makes it easy to observe the assembly position of the shift block 32 and improves the assembly accuracy, but also the cantilever portion 312 is spaced relative to the support seat 12 to facilitate the assembly of the cantilever shaft 31 and the shift block 32 in the cover 11, which makes assembly convenient and quick, thereby improving assembly efficiency.

[0055] In an embodiment of the present invention, the brake assembly 22 includes a brake pressure disc 221 and a brake push ball 222. The brake pressure disc 221 is movably arranged on the support seat 12. A pushing groove 2211 is provided on the side of the brake pressure disc 221 facing away from the friction plate 21. The size of the pushing groove 2211 is gradually expanded from the bottom of the pushing groove 2211 to the groove mouth of the pushing groove 2211. The brake push ball 222 is arranged between the pushing groove 2211 and the support seat 12. A shifting groove 2212 is provided on the brake pressure disc 221 for the shifting block 32 to extend into. The shifting block 32 swings and drives the brake pressure disc 221 to rotate, so that the brake push ball 222 pushes the brake pressure disc 221 along the groove wall of the pushing groove 2211 from the release position to the braking position.

[0056] like Figures 2 to 4As shown, the brake pressure disc 221 is arranged on the support seat 12 and can reciprocate in the direction close to the friction plate 21 or away from the friction plate 21. A shifting groove 2212 is provided on the brake pressure disc 221. One end of the shifting block 32 is connected to the cantilever portion 312, and the other end of the shifting block 32 extends into the shifting groove 2212. The cantilever shaft 31 rotates to drive the shifting block 32 to swing, so that the shifting block 32 drives the brake pressure disc 221 to rotate. During the rotation of the brake pressure disc 221, the brake push ball 222 moves along the groove wall of the pushing groove 2211 toward the notch of the pushing groove 2211, and the brake push ball 222 abuts against the support seat 12, and enters The brake push ball 222 pushes the brake pressure disc 221 toward the friction plate 21, and the brake pressure disc 221 moves from the release position away from the friction plate 21 toward the friction plate 21 to the braking position abutting against the friction plate 21. The brake pressure disc 221 presses the friction plate 21 against the cover 11 in the braking position to limit the rotation of the friction plate 21 and thereby brake the drive shaft 200. The braking response speed is fast and the transmission is smooth and reliable. When assembling the wet brake, the cantilever portion 312 does not need to be connected to the support seat 12, which is convenient for observing the assembly position of the shift block 32 and installing the shift block 32 in the shift groove 2212, thereby improving the convenience of assembly.

[0057] Furthermore, if Figure 2 As shown, a pushing slope 2213 is formed on the groove wall of the pushing groove 2211, and the pushing slope 2213 is extended along the circumference of the brake pressure disc 221, and the pushing slope 2213 is inclined from the groove bottom of the pushing groove 2211 to the groove mouth of the pushing groove 2211. The brake push ball 222 rolls along the pushing slope 2213 during the rotation of the brake pressure disc 221, and pushes the pushing slope 2213 in the direction away from the support seat 12, thereby moving the brake pressure disc 221 to the braking position and braking the friction plate 21, and the braking response is fast and stable and reliable.

[0058] In the embodiment of the present invention, a guide boss 121 and a receiving groove 122 are provided on the side of the support seat 12 facing the friction plate 21, the brake pressure disc 221 is movably mounted on the guide boss 121, and the brake push ball 222 is arranged between the pushing groove 2211 and the receiving groove 122.

[0059] like Figures 3 to 5As shown, a receiving groove 122 for a brake push ball 222 to extend into is provided at a position corresponding to the pushing groove 2211 on the brake pressure disc 221, and a guide boss 121 is formed on the brake pressure disc 221. The brake pressure disc 221 is sleeved on the guide boss 121. The shift block 32 swings to drive the brake pressure disc 221 to rotate relative to the guide boss 121. The brake push ball 222 in the receiving groove 122 pushes the brake pressure disc 221 to move toward the friction plate 21 along the extension direction of the guide boss 121 to the braking position, thereby braking the friction plate 21. The guide boss 121 is used for installing the brake pressure disc 221 so that the brake pressure disc 221 can rotate relative to the support seat 12, and can also guide the brake pressure disc 221 to move between the release position and the braking position, thereby improving the braking stability. In addition, the brake push ball 222 extends into the accommodating groove 122 and the pushing groove 2211 respectively, effectively preventing the brake push ball 222 from escaping from the pushing groove 2211 during the process of pushing the brake pressure disc 221. The brake push ball 222 can be stably accommodated in the accommodating groove 122, thereby improving the structural reliability.

[0060] In a preferred embodiment of the present invention, Figure 2 and Figure 3 As shown, the number of pushing grooves 2211 is set to be multiple, and the multiple pushing grooves 2211 are arranged circumferentially at intervals along the brake pressure disc 221. The number of brake push balls 222 and the number of accommodating grooves 122 are consistent with the number of pushing grooves 2211 and are arranged one by one. During the rotation of the brake pressure disc 221, the multiple brake push balls 222 can synchronously push the brake pressure disc 221 to move, effectively preventing the brake pressure disc 221 from tilting and dislocating, and improving the braking reliability.

[0061] In an embodiment of the present invention, a limiting step 111 is opened in the cover shell 11, and a friction braking surface 112 is provided on the limiting step 111. The friction plate 21 is located between the brake pressure disc 221 and the friction braking surface 112. The brake pressure disc 221 presses the friction plate 21 against the friction braking surface 112 in the braking position.

[0062] like Figure 2 and Figure 4 As shown, the friction plate 21 is used to be sleeved on the drive shaft 200 and spline-connected with the drive shaft 200, the cover shell 11 is covered on the outside of the friction plate 21, one side of the friction plate 21 is arranged toward the friction braking surface 112, and the other side of the friction plate 21 is arranged toward the brake pressure disc 221. When the brake pressure disc 221 is in the braking position, it abuts against the friction plate 21 and presses the friction plate 21 against the friction braking surface 112. The friction braking surface 112 cooperates with the brake pressure disc 221 to limit the rotation of the friction plate 21, and then limits the rotation of the drive shaft 200, thereby realizing the braking of the drive shaft 200. The friction braking surface 112 is used to abut against the friction plate 21 and generate friction with the friction plate 21 to limit the rotation of the friction plate 21, thereby improving the braking reliability.

[0063] In an embodiment of the present invention, the cantilever shaft 31 also includes a mounting portion 311, which is rotatably disposed on the cover shell 11, one end of the cantilever portion 312 is connected to the mounting portion 311, and one end of the cantilever portion 312 away from the mounting portion 311 is spaced apart from the support seat 12, the shift block 32 is disposed on the cantilever portion 312, and a limit spring 33 is provided on the cantilever portion 312, and the limit spring 33 is located on the side of the shift block 32 facing away from the mounting portion 311.

[0064] like Figure 4 and Figure 6 The cam 312 is provided with a locking plate 314 for locking the cam 314 in place and the locking plate 316 is provided with a spring 330 for locking the cam 314 in place.

[0065] Furthermore, the mounting portion 311 includes a mounting section 3111 and a transition section 3112, the transition section 3112 is rotatably disposed on the cover shell 11, one end of the transition section 3112 is connected to the cantilever portion 312, the other end of the transition section 3112 is connected to the mounting section 3111, the mounting section 3111 extends out of the cover shell 11, and a mounting step 3113 is formed between the mounting section 3111 and the transition section 3112, and the transmission assembly 30 also includes a crank 34, which is disposed on the mounting section 3111 and abuts against the mounting step 3113.

[0066] like Figure 4 and Figure 6As shown, the two ends of the transfer section 3112 are respectively connected to the mounting section 3111 and the cantilever portion 312, the mounting section 3111 extends out of the housing 11, and the cantilever portion 312 extends into the housing 11, the crank 34 is sleeved on the mounting section 3111, and the shift block 32 is sleeved on the cantilever portion 312. When the drive shaft 200 needs to be braked, the crank 34 swings and drives the mounting section 3111 to rotate, and the mounting section 3111 drives the shift block 32 to swing through the transfer section 3112 and the cantilever portion 312 in turn, and the shift block 32 drives the brake pressure disc 2 The rotation of the brake push ball 222 pushes the brake pressure plate 221 to the braking position to limit the rotation of the friction plate 21, thereby braking the drive shaft 200, with fast braking response and stable and reliable transmission. In addition, the diameter of the transfer section 3112 is larger than the diameter of the installation section 3111, so that a mounting step 3113 is formed between the transfer section 3112 and the installation section 3111. The mounting step 3113 is used to abut against the crank 34 to limit the movement of the crank 34, thereby realizing the positioning and installation of the crank 34, and the assembly is convenient and fast. In addition, the crank 34 is used to be connected to the brake pedal through a connecting rod mechanism, and the connecting rod mechanism drives the crank 34 to swing by stepping on the brake pedal, thereby braking the drive shaft 200, thereby realizing the braking of the operating machine.

[0067] In the embodiment of the present invention, a first sealing ring 35 is provided on the transition section 3112, and a sealing groove 113 is provided on the housing 11 at a position corresponding to the first sealing ring 35. The first sealing ring 35 is located in the sealing groove 113 and abuts against the crank 34. Figure 3 , Figure 4 and Figure 6 As shown, the transition section 3112 is arranged through the sealing groove 113, so that the first sealing ring 35 in the sealing groove 113 is sleeved on the transition section 3112, and the first sealing ring 35 is clamped between the groove wall of the sealing groove 113 and the crank 34, which effectively prevents oil leakage, improves the sealing between the crank 34, the cantilever shaft 31 and the cover shell 11, and improves the sealing effect.

[0068] In the embodiment of the present invention, the housing 10 is provided with an oil inlet channel 13, which has an oil inlet port 131 and a connecting port 132. The oil inlet port 131 is used to communicate with the oil filling chamber 301 of the gearbox 300, and the connecting port 132 is connected with the inner cavity of the housing 10. Figure 5 and Figure 7As shown, the oil inlet channel 13 runs through the support seat 12 and the cover shell 11, the oil inlet port 131 of the oil inlet channel 13 is located on the support seat 12, and the connecting port 132 of the oil inlet channel 13 is located in the cover shell 11, so that the oil in the oil filling chamber 301 can flow into the oil inlet channel 13 from the oil inlet port 131, and flow into the inner cavity of the cover shell 11 from the connecting port 132 along the oil inlet channel 13, and the friction plate 21 is arranged in the inner cavity of the cover shell 11 so that the friction plate 21 can be directly immersed in the oil, the oil flows smoothly in the oil inlet channel 13, and the oil supply effect of the wet brake is good, the oil in the oil filling chamber 301 can be directly supplied to the friction plate 21 through the oil inlet channel 13, which accelerates the heat dissipation speed of the friction plate 21, slows down the wear of the friction plate 21, increases the service life of the friction plate 21, and improves the braking reliability.

[0069] Furthermore, a connecting groove 14 is provided on the inner wall of the housing 10, the connecting groove 14 is provided corresponding to the friction plate 21, and the connecting port 132 is connected to the connecting groove 14. Figure 2 and Figure 5 As shown, the connecting groove 14 is opened on the inner wall of the cover shell 11, the oil inlet channel 13 passes through the support seat 12 and the cover shell 11, the oil inlet port 131 of the oil inlet channel 13 is located on the support seat 12, and the connecting port 132 of the oil inlet channel 13 is located on the side groove wall of the connecting groove 14, so that the oil filling chamber 301 is connected with the connecting groove 14 through the oil inlet channel 13, the friction plate 21 is arranged in the cover shell 11, and the connecting groove 14 is located on one side of the friction plate 21, the oil in the oil filling chamber 301 can flow into the connecting groove 14 along the oil inlet channel 13, so that the friction plate 21 can be directly immersed in the oil in the connecting groove 14, the oil supply effect is good, the heat dissipation efficiency of the friction plate 21 is further improved, and the service life of the friction plate 21 is extended.

[0070] In the embodiment of the present invention, a second sealing ring is provided between the cover shell 11 and the support seat 12, and the second sealing ring is used to seal the connection between the cover shell 11 and the support seat 12 to prevent oil leakage from the connection between the cover shell 11 and the support seat 12, thereby improving the sealing reliability.

[0071] Furthermore, if Figure 5 As shown, an oil outlet channel 15 is opened on the housing 11, and the oil outlet channel 15 runs through the housing 11 and is connected with the connecting groove 14, so that the oil in the connecting groove 14 can flow out of the housing 11 along the oil outlet channel 15, thereby realizing the circulation of the oil and further improving the heat dissipation efficiency of the friction plate 21.

[0072] In addition, the present invention also provides an operating machine, which may be a tractor, and the operating machine includes a gearbox 300, and the gearbox 300 includes the wet brake according to the above, specifically, as Figure 7As shown, the gearbox 300 also includes a housing, an oil filling chamber 301 is formed in the housing, a differential is arranged in the oil filling chamber 301, one end of the drive shaft 200 is spline-connected with the friction plate 21, and the other end of the drive shaft 200 is spline-connected with the differential half-shaft gear, the cover 11 and the support seat 12 are connected to the bridge housing through fasteners, and the oil inlet channel 13 is connected to the oil filling chamber 301, so that the oil filled in the oil filling chamber 301 can flow into the housing 10 along the oil inlet channel 13, and the friction plate 21 is arranged in the housing 10 and can be directly immersed in the oil, which greatly improves the heat dissipation effect of the friction plate 21 and slows down the wear rate of the friction plate 21; and the specific structure of the wet brake refers to the above embodiment. Since the gearbox 300 and the operating machinery adopt all the technical solutions of the above embodiment, they at least have all the beneficial effects brought by the technical solutions of the above embodiment, which will not be repeated here.

[0073] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0074] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0076] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A wet brake, characterized in that: The wet brake comprises: Housing (10); A brake mechanism (20), comprising a friction plate (21) and a brake assembly (22), wherein the friction plate (21) is arranged in the housing (10) and sleeved on the drive shaft (200), and the brake assembly (22) is movably arranged in the housing (10) and used to switch between a braking position and a release position, and the brake assembly (22) presses the friction plate (21) against the housing (10) in the braking position; The transmission assembly (30) comprises a cantilever shaft (31) and a shifting block (32). The cantilever shaft (31) is rotatably arranged on the housing (10) and has a cantilever portion (312) extending into the housing (10). The shifting block (32) is arranged on the cantilever portion (312) and is drivingly connected to the brake assembly (22). The cantilever shaft (31) is used to drive the shifting block (32) to swing so that the shifting block (32) drives the brake assembly (22) to move from a release position to a brake position.

2. The wet brake according to claim 1, characterized in that: The housing (10) comprises a cover shell (11) and a support seat (12); the friction plate (21) is arranged in the cover shell (11); the support seat (12) is connected to the cover shell (11); the brake assembly (22) is movably arranged on the support seat (12) and is located in the cover shell (11); the brake assembly (22) presses the friction plate (21) against the cover shell (11) in a braking position; the cantilever shaft (31) is rotatably arranged on the cover shell (11); the cantilever part (312) extends into the cover shell (11) and is spaced apart from the support seat (12).

3. The wet brake according to claim 2, characterized in that: The brake assembly (22) comprises a brake pressure disc (221) and a brake push ball (222); the brake pressure disc (221) is movably arranged on the support seat (12); a pushing groove (2211) is provided on a side of the brake pressure disc (221) facing away from the friction plate (21); the size of the pushing groove (2211) is gradually expanded from the groove bottom of the pushing groove (2211) to the groove opening of the pushing groove (2211); A dynamic push ball (222) is arranged between the pushing groove (2211) and the support seat (12); a push groove (2212) is provided on the brake pressure disc (221) for the push block (32) to extend into; the push block (32) swings and drives the brake pressure disc (221) to rotate, so that the brake push ball (222) pushes the brake pressure disc (221) along the groove wall of the pushing groove (2211) to move from a release position to a brake position.

4. The wet brake according to claim 3, characterized in that: A guide boss (121) and a receiving groove (122) are provided on the support seat (12) on one side facing the friction plate (21); the brake pressure disc (221) is movably sleeved on the guide boss (121); and the brake push ball (222) is arranged between the pushing groove (2211) and the receiving groove (122); And / or, a limit step (111) is provided in the housing (11), a friction braking surface (112) is provided on the limit step (111), the friction plate (21) is located between the brake pressure disc (221) and the friction braking surface (112), and the brake pressure disc (221) presses the friction plate (21) against the friction braking surface (112) in the braking position.

5. The wet brake according to claim 2, characterized in that: The cantilever rotating shaft (31) also includes a mounting portion (311), the mounting portion (311) is rotatably arranged on the cover shell (11), one end of the cantilever portion (312) is connected to the mounting portion (311), the other end of the cantilever portion (312) is spaced apart from the support seat (12), and a limiting clamping spring (33) is provided on the cantilever portion (312), and the limiting clamping spring (33) is located on a side of the shifting block (32) facing away from the mounting portion (311).

6. The wet brake according to claim 5, characterized in that: The mounting portion (311) comprises a mounting section (3111) and a transition section (3112); the transition section (3112) is rotatably arranged on the cover shell (11); one end of the transition section (3112) is connected to the cantilever portion (312); the other end of the transition section (3112) is connected to the mounting section (3111); the mounting section (3111) extends out of the cover shell (11); a mounting step (3113) is formed between the mounting section (3111) and the transition section (3112); the transmission assembly (30) further comprises a crank (34); the crank (34) is arranged on the mounting section (3111) and abuts against the mounting step (3113).

7. The wet brake according to claim 6, characterized in that: A first sealing ring (35) is provided on the transition section (3112), and a sealing groove (113) is provided on the cover shell (11) at a position corresponding to the first sealing ring (35). The first sealing ring (35) is located in the sealing groove (113) and abuts against the crank (34).

8. The wet brake according to any one of claims 1 to 7, characterized in that: The housing (10) is provided with an oil inlet passage (13), the oil inlet passage (13) having an oil inlet port (131) and a connecting port (132), the oil inlet port (131) being used to communicate with an oil injection chamber (301) of a gearbox (300), and the connecting port (132) being connected with an inner chamber of the housing (10).

9. The wet brake according to claim 8, characterized in that: A communication groove (14) is provided on the inner wall of the housing (10), the communication groove (14) is arranged corresponding to the friction plate (21), and the communication port (132) is connected to the communication groove (14).

10. A working machine, characterized in that: The working machine comprises a gearbox (300), and the gearbox (300) comprises a wet brake according to any one of claims 1 to 9.

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