Brake release system, swing motor mechanism, and excavator

Abstract

The utility model provides a brake releasing system, a rotary motor mechanism and an excavator. The brake releasing system comprises a first pipeline, a second pipeline, a third pipeline, a first valve body, a fourth pipeline and a brake assembly. The first end of the third pipeline is connected with a first connecting point between the first end and the second end of the first pipeline, the second end of the third pipeline is connected with a second connecting point between the first end and the second end of the second pipeline, a medium in the third pipeline flows in the direction from the first end to the second end of the third pipeline, and the third pipeline is arranged in an on-off mode; the second end of the second pipeline is connected with the first valve body, so that a medium is introduced into the first valve body, and a valve element of the first valve body moves to an opening position; the first valve body is arranged between the second end of the first pipeline and the first end of the fourth pipeline, and the second end of the fourth pipeline is connected with the brake assembly; when the valve element is located at the opening position, a medium in the first pipeline flows into the braking assembly through the valve element and the fourth pipeline, so that the braking piece is converted into a braking releasing state.

Description

Technical Field

[0001] The utility model relates to the technical field of releasing brakes of a rotary motor, in particular to a brake releasing system, a rotary motor mechanism and an excavator. Background Art

[0002] In the brake release system of the prior art, when the normal oil passage cannot enter the brake chamber due to other reasons or the pressure entering the brake chamber is low, the brake cannot be released. At this time, the rotation of the motor will burn the friction plate and cause damage to the motor. Utility Model Content

[0003] The main purpose of the utility model is to provide a brake release system, a rotary motor mechanism and an excavator, so as to solve the problem that the brake release system in the prior art cannot release the brake due to abnormal oil flow in the normal oil circuit, thereby causing damage to the motor.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a brake release system is provided, which includes: a first pipeline, a medium in the first pipeline flows along the direction from the first end to the second end thereof, and a first connection point is provided between the first end and the second end of the first pipeline; a second pipeline, a medium in the second pipeline flows along the direction from the first end to the second end thereof, and a second connection point is provided between the first end and the second end of the second pipeline; a third pipeline, a first end and a second end of the third pipeline are respectively connected to the second connection point and the first connection point, and a medium in the third pipeline flows along the direction from the first end to the second end thereof, and the third pipeline It can be set to be on and off; the first valve body, the second end of the second pipeline is connected to the first valve body, so as to pass the medium into the first valve body, thereby moving the valve core of the first valve body from the disconnected position to the open position; the fourth pipeline, the first valve body is set between the second end of the first pipeline and the first end of the fourth pipeline, so that when the valve core is in the open position, the second end of the first pipeline and the first end of the fourth pipeline are connected through the valve core; the brake assembly, the second end of the fourth pipeline is connected to the brake assembly, so that when the medium in the first pipeline flows into the brake assembly through the fourth pipeline, the brake part of the brake assembly is changed from a braking state to a released brake state.

[0005] Furthermore, the brake release system also includes a first one-way control component, which is arranged on the first pipeline to allow the medium in the first pipeline to flow in the direction from the first end to the second end of the first pipeline; the first one-way control component is located on the side of the first connection point close to the first end of the first pipeline.

[0006] Furthermore, the brake release system also includes a second one-way control member, which is arranged on the third pipeline to allow the medium in the third pipeline to flow in a direction from the first end to the second end of the third pipeline.

[0007] Furthermore, the first one-way control component is a one-way valve.

[0008] Furthermore, the second one-way control component is a one-way valve.

[0009] Furthermore, the brake release system also includes a plurality of fifth pipelines, the first end of each fifth pipeline is used for introducing a medium, and the second end of each fifth pipeline is connected to the first end of the first pipeline.

[0010] Furthermore, the medium is hydraulic oil.

[0011] Furthermore, the brake assembly includes: a brake chamber, the brake member is located outside the brake chamber; a partition, the partition is arranged in the brake chamber to divide the brake chamber into a fifth chamber and a sixth chamber that are independent of each other; the fifth chamber and the sixth chamber are distributed along the second direction; wherein, the partition is connected to the brake member, and the partition is movably arranged along the second direction so that the partition drives the brake member to switch between a braking state and a released braking state; the second end of the fourth pipeline is connected to the sixth chamber to introduce a medium into the sixth chamber, thereby causing the partition to move in the direction from the sixth chamber to the fifth chamber.

[0012] Furthermore, the braking assembly also includes a second elastic member, which has a first end and a second end relatively arranged along its expansion and contraction direction; the expansion and contraction direction of the second elastic member is parallel to or the same as the second direction; the second elastic member is arranged in the fifth chamber, the first end of the second elastic member is connected to the cavity wall of the fifth chamber, and the second end of the second elastic member is connected to the partition.

[0013] Furthermore, the brake assembly also includes a connecting piece, which is connected to the partition and to the brake piece.

[0014] According to another aspect of the present invention, a rotary motor mechanism is provided, which includes the above-mentioned brake release system.

[0015] According to a third aspect of the utility model, an excavator is provided, which includes the above-mentioned swing motor mechanism.

[0016] By applying the technical solution of the utility model, the brake release system includes a first pipeline, a second pipeline, a third pipeline, a first valve body, a fourth pipeline and a brake assembly. The medium in the first pipeline flows in the direction from the first end to the second end, and a first connection point is provided between the first end and the second end of the first pipeline; the medium in the second pipeline flows in the direction from the first end to the second end, and a second connection point is provided between the first end and the second end of the second pipeline; the first end and the second end of the third pipeline are connected to the second connection point and the first connection point respectively, the medium in the third pipeline flows in the direction from the first end to the second end, and the third pipeline can be set to be on and off; the second end of the second pipeline is connected to the first valve body to pass the medium into the first valve body, thereby moving the valve core of the first valve body from the disconnected position to the open position; the first valve body is arranged between the second end of the first pipeline and the first end of the fourth pipeline, so that when the valve core is in the open position, the second end of the first pipeline and the first end of the fourth pipeline are connected through the valve core; the second end of the fourth pipeline is connected to the brake assembly, so that when the medium in the first pipeline flows into the brake assembly through the fourth pipeline, the brake member of the brake assembly is changed from the brake state to the release state. The brake release system of the present application solves the problem in the prior art that the brake release system cannot release the brake due to abnormal oil flow in the normal oil circuit, which further causes damage to the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the principle of the brake release system according to the utility model is shown;

[0019] Figure 2 The schematic diagram of the principle of the first valve body of the brake release system according to the utility model is shown; wherein the valve core is in the disconnected position;

[0020] Figure 3 The schematic diagram of the principle of the first valve body of the brake release system according to the utility model is shown; wherein the valve core is in an open position;

[0021] Figure 4 A schematic diagram of the principle of a brake assembly of a brake release system according to the utility model is shown.

[0022] The above drawings include the following reference numerals:

[0023] 10. first pipeline; 101. first pipe section; 102. second pipe section; 11. first one-way control element; 12. first connection point;

[0024] 20, second pipeline; 201, third pipe section; 202, fourth pipe section; 21, second connection point;

[0025] 30. third pipeline; 31. second one-way control element;

[0026] 40. Fourth pipeline;

[0027] 50, first valve body; 51, valve core; 52, valve cavity; 521, first chamber; 522, second chamber; 523, third chamber; 524, fourth chamber; 53, first elastic member;

[0028] 60. Braking assembly; 61. Braking member; 62. Braking chamber; 621. Fifth chamber; 622. Sixth chamber; 63. Separator; 64. Second elastic member; 65. Connector;

[0029] 70. Fifth pipeline; 80. Sixth pipeline; 81. Second valve body. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] The utility model provides a brake release system, please refer to Figures 1 to 4 The brake release system includes a first pipeline 10 , a second pipeline 20 , a third pipeline 30 , a first valve body 50 , a fourth pipeline 40 and a brake assembly 60 .

[0034] The two ends of the first pipeline 10 are respectively the first end and the second end; the medium in the first pipeline 10 flows in the direction from the first end to the second end, that is, the first port of the first pipeline 10 is used to pass the medium; a first connection point 12 is provided between the first end and the second end of the first pipeline 10. The first connection point 12 divides the first pipeline 10 into a first pipe section 101 and a second pipe section 102, the first end of the first pipe section 101 is the first end of the first pipeline 10, the second end of the first pipe section 101 is connected and communicated with the first end of the second pipe section 102, and the second end of the second pipe section 102 is the second end of the first pipeline 10.

[0035] The two ends of the second pipeline 20 are respectively the first end and the second end; the medium in the second pipeline 20 flows in the direction from the first end to the second end, that is, the first port of the second pipeline 20 is used to pass the medium; a second connection point 21 is provided between the first end and the second end of the second pipeline 20. The second connection point 21 divides the second pipeline 20 into a third pipe section 201 and a fourth pipe section 202, the first end of the third pipe section 201 is the first end of the second pipeline 20, the second end of the third pipe section 201 is connected and communicated with the first end of the fourth pipe section 202, and the second end of the fourth pipe section 202 is the second end of the second pipeline 20.

[0036] The two ends of the third pipeline 30 are respectively the first end and the second end; the first end and the second end of the third pipeline 30 are respectively connected to the second connection point 21 and the first connection point 12; that is, the first end of the third pipeline 30 is connected to the second connection point 21, and the second end of the third pipeline 30 is connected to the first connection point 12, so that the first end of the third pipeline 30 is connected to the lumen of the second pipeline 20, and the second end of the third pipeline 30 is connected to the lumen of the first pipeline 10; the medium in the third pipeline 30 flows in the direction from the first end to the second end; the third pipeline 30 can be set to be on and off, so that the third pipeline 30 has a connected state and a disconnected state.

[0037] When the third pipeline 30 is in a disconnected state, the medium introduced from the first port of the first pipeline 10 flows in a direction from the first end to the second end of the first pipeline 10, and the medium introduced from the first port of the second pipeline 20 flows in a direction from the first end to the second end of the second pipeline 20. When the third pipeline 30 is in a connected state, the medium introduced from the first port of the first pipeline 10 flows in a direction from the first end to the second end of the first pipeline 10; the medium introduced from the first port of the second pipeline 20 is divided into two paths at the second connection point 21; one path flows into the fourth pipe segment 202 and flows in a direction from the first end to the second end of the fourth pipe segment 202; the other path flows into the third pipeline 30 and flows in a direction from the first end to the second end of the third pipeline 30, and is mixed with the medium in the first pipe segment 101 at the first connection point 12, and flows into the second pipe segment 102 together and flows in a direction from the first end to the second end of the second pipe segment 102.

[0038] The first valve body 50 includes a valve core 51. The second end of the second pipeline 20 is connected to the first valve body 50 so that a medium is introduced into the first valve body 50, that is, the medium flowing out of the second end of the second pipeline 20 flows into the first valve body 50; when the medium is introduced into the first valve body 50, under the action of the medium in the first valve body 50, the valve core 51 of the first valve body 50 moves from the disconnected position to the open position.

[0039] Specifically, the first valve body 50 has a valve cavity 52, and the valve core 51 is arranged in the valve cavity 52 to divide the valve cavity 52 into two independent chambers, which are respectively a first chamber 521 and a second chamber 522, and the first chamber 521 and the second chamber 522 are distributed along the first direction; the valve core 51 is movably arranged along the first direction so that the valve core 51 moves between the disconnected position and the open position. The second end of the second pipeline 20 is connected to the second chamber 522 so that the medium flowing out of the second end of the second pipeline 20 flows into the second chamber 522. When the medium flowing out of the second end of the second pipeline 20 flows into the second chamber 522, a thrust is generated on the valve core 51 in the direction from the second chamber 522 to the first chamber 521, so as to push the valve core 51 to move in the direction from the second chamber 522 to the first chamber 521, thereby moving the valve core 51 from the disconnected position to the open position.

[0040] Specifically, the first valve body 50 also includes a first elastic member 53, which has a first end and a second end that are relatively arranged along its expansion and contraction direction; the expansion and contraction direction of the first elastic member 53 is parallel to or the same as the first direction; the first elastic member 53 is arranged in the first chamber 521, and the first end of the first elastic member 53 is connected to the valve core 51; the first chamber 521 has a designated cavity wall that is relatively arranged with the valve core 51 along the first direction, and the second end of the first elastic member 53 is connected to the designated cavity wall of the first chamber 521; the first elastic member 53 divides the first chamber 521 into two independent chambers, which are respectively the third chamber 523 and the fourth chamber 524, and the distribution direction of the third chamber 523 and the fourth chamber 524 is perpendicular to the first direction.

[0041] When no medium is introduced into the second chamber 522, the valve core 51 is in the disconnected position; when a preset amount of medium is introduced into the second chamber 522, the valve core 51 moves from the disconnected position to the open position under the thrust of the preset amount of medium, and the first elastic member 53 is compressed at this time; when no medium is introduced into the second chamber 522 and the medium in the second chamber 522 flows out, under the elastic force of the first elastic member 53, the valve core 51 returns to the disconnected position from the open position.

[0042] The two ends of the fourth pipeline 40 are respectively a first end and a second end; the first valve body 50 is arranged between the second end of the first pipeline 10 and the first end of the fourth pipeline 40, and the second end of the first pipeline 10 and the first end of the fourth pipeline 40 are both connected to the first valve body 50; when the valve core 51 is in the disconnected position, the second end of the first pipeline 10 and the first end of the fourth pipeline 40 are in a disconnected state; when the valve core 51 is in the open position, the second end of the first pipeline 10 and the first end of the fourth pipeline 40 are connected through the valve core 51, and the medium flowing out from the second end of the first pipeline 10 flows into the fourth pipeline 40 through the valve core 51 and the first end of the fourth pipeline 40.

[0043] Specifically, the second end of the first pipeline 10 is connected to the third chamber 523, and the first end of the fourth pipeline 40 is connected to the fourth chamber 524; when the valve core 51 is in the disconnected position, the second end of the first pipeline 10 and the first end of the fourth pipeline 40 cannot be connected; when the valve core 51 is in the open position, the second end of the first pipeline 10 and the first end of the fourth pipeline 40 are connected through the valve core 51, that is, the valve core 51 has a connecting channel connecting the second end of the first pipeline 10 and the first end of the fourth pipeline 40.

[0044] The brake assembly 60 includes a brake member 61; the second end of the fourth pipeline 40 is connected to the brake assembly 60; when the valve core 51 is in an open position, the medium in the first pipeline 10 flows into the fourth pipeline 40 through the valve core 51, and the medium flowing into the fourth pipeline 40 flows into the brake assembly 60, so that the brake member 61 of the brake assembly 60 is changed from a braking state to a released braking state.

[0045] In this embodiment, the brake assembly 60 includes a brake chamber 62 and a partition 63, and the brake member 61 is located on the outside of the brake chamber 62; the partition 63 is arranged in the brake chamber 62 to divide the brake chamber 62 into two independent chambers, which are respectively a fifth chamber 621 and a sixth chamber 622; the fifth chamber 621 and the sixth chamber 622 are distributed along the second direction; the partition 63 is movably arranged along the second direction so that the partition 63 can move between the braking position and the unlocking position.

[0046] The partition 63 is connected to the brake member 61, so that the partition 63 drives the brake member 61 to move, thereby switching the brake member 61 between the braking state and the brake release state. That is, when the partition 63 moves to the braking position, the brake member 61 also moves to the braking position, so that the brake member 61 is in the braking state; when the partition 63 moves to the unlocking position, the brake member 61 also moves to the unlocking position, so that the brake member 61 is in the brake release state.

[0047] The second end of the fourth pipeline 40 is connected to the sixth chamber 622 so that the medium can be introduced into the sixth chamber 622, that is, the medium flowing out from the second end of the fourth pipeline 40 flows into the sixth chamber 622; when the medium flowing out from the second end of the fourth pipeline 40 flows into the sixth chamber 622, it will generate a thrust on the partition 63 along the direction from the sixth chamber 622 to the fifth chamber 621, so as to push the partition 63 to move along the direction from the sixth chamber 622 to the fifth chamber 621, thereby moving the partition 63 from the braking position to the unlocking position.

[0048] Specifically, the brake assembly 60 also includes a second elastic member 64, which has a first end and a second end relatively arranged along its extension and contraction direction; the extension and contraction direction of the second elastic member 64 is parallel to or the same as the second direction; the second elastic member 64 is arranged in the fifth chamber 621, the first end of the second elastic member 64 is connected to the cavity wall of the fifth chamber 621, and the second end of the second elastic member 64 is connected to the partition 63.

[0049] When no medium is introduced into the sixth chamber 622, the partition 63 is in the braking position and the brake member 61 is in the braking state; when a predetermined amount of medium is introduced into the sixth chamber 622, under the thrust of the predetermined amount of medium, the partition 63 moves from the braking position to the unlocking position, and the brake member 61 moves from the braking state to the unbraking state, and the second elastic member 64 is compressed at this time; when no medium is introduced into the sixth chamber 622 and the medium in the sixth chamber 622 flows out, under the elastic force of the second elastic member 64, the partition 63 returns to the braking position from the unlocking position.

[0050] It should be noted that no matter the partition 63 is in the unlocking position or the braking position, the second end of the fourth pipeline 40 is always connected to the sixth chamber 622 .

[0051] Optionally, the second elastic member 64 is a spring.

[0052] Optionally, the partition 63 is a plate-shaped structure.

[0053] In this embodiment, the brake assembly 60 further includes a connecting member 65 , which is connected to the partition 63 and to the brake member 61 , so that the brake member 61 is connected to the partition 63 through the connecting member 65 .

[0054] Specifically, the connecting member 65 has a first end and a second end that are relatively arranged along the second direction; the first end of the connecting member 65 is connected to the partition 63, and the second end of the connecting member 65 is connected to the brake member 61; the portion of the connecting member 65 close to its first end is located in the sixth chamber 622.

[0055] Optionally, the connecting member 65 is a rod-shaped structure.

[0056] Specifically, along the second direction, the brake chamber 62 has a first chamber wall and a second chamber wall that are relatively arranged; the first chamber wall is the chamber wall of the fifth chamber 621, and the first end of the second elastic member 64 is connected to the first chamber wall; the second chamber wall is the chamber wall of the sixth chamber 622, and a through hole is opened on the second chamber wall for the connecting member 65 to pass through, and the connecting member 65 can be movably passed through the through hole along the second direction.

[0057] Specifically, a sealing member is provided between the hole wall of the through hole and the connecting member 65 to ensure the sealing of the sixth chamber 622. Optionally, the connecting member 65 is provided to be movable relative to the sealing member along the second direction.

[0058] Specifically, the partition member 63 and the connecting member 65 constitute a brake piston.

[0059] In this embodiment, when the brake member 61 is in the braking state, the brake member 61 contacts the component to be braked, so that the brake member 61 has a braking effect on the component to be braked; at this time, under the action of the second elastic member 64, the abutment effect of the brake member 61 and the component to be braked can be ensured. When the brake member 61 is in the brake release state, the brake member 61 is separated from the component to be braked to unlock the component to be braked.

[0060] Specifically, the brake member 61 is a friction plate.

[0061] In this embodiment, the medium mentioned is hydraulic oil.

[0062] If the third pipeline 30 is not provided, when the medium provided through the first pipeline 10 cannot enter the sixth chamber 622 due to other factors, or when the pressure of the medium provided to the sixth chamber 622 through the first pipeline 10 is low, the partition 63 cannot be moved to the unlocked position, and the brake component 61 cannot be changed from the braking state to the released braking state, and the brake cannot be released. At this time, the rotation of the motor will burn the brake component 61, causing damage to the motor.

[0063] The brake release system of the present application is additionally provided with a third pipeline 30. When the medium provided through the first pipeline 10 cannot enter the sixth chamber 622 due to other factors, or when the pressure of the medium provided to the sixth chamber 622 through the first pipeline 10 is low, the third pipeline 30 is placed in a connected state, and a portion of the medium flowing out of the third pipe section 201 flows into the second chamber 522 through the fourth pipe section 202 to move the valve core 51 from the disconnected position to the open position, and another portion flows into the second pipe section 102 through the third pipeline 30, and then flows into the sixth chamber 622 through the valve core 51 and the fourth pipeline 40, so that the partition 63 moves to the unlocked position, thereby changing the brake member 61 from the braking state to the brake release state, thereby releasing the brake and avoiding damage to the motor.

[0064] The present application reduces the risk of being unable to release the brakes due to abnormal medium provided by the first pipeline 10 by adding a third pipeline 30, thereby reducing the risk of burning of the brake component 61 and the risk of damage to the motor; the brake release system of the present application solves the problem in the prior art that the brake release system cannot release the brakes due to abnormal oil flow in the normal oil circuit, thereby causing damage to the motor; the brake release system of the present application is safer and more reliable for the entire excavator.

[0065] In this embodiment, the brake release system further includes a first one-way control member 11, which is disposed on the first pipeline 10 so that the medium in the first pipeline 10 can only flow in the direction from the first end to the second end of the first pipeline 10; the first one-way control member 11 is located on the side of the first connection point 12 close to the first end of the first pipeline 10, that is, the first one-way control member 11 is disposed on the first pipe section 101. By disposing the first one-way control member 11, the medium in the third pipeline 30 is prevented from flowing to the first connection point 12 and then flowing to the first pipe section 101.

[0066] Optionally, the first one-way control member 11 is a one-way valve.

[0067] In this embodiment, the brake release system also includes a second one-way control component 31, which is arranged on the third pipeline 30 so that the medium in the third pipeline 30 can only flow in the direction from the first end to the second end of the third pipeline 30, thereby preventing the medium in the first pipeline 10 from flowing to the second pipeline 20 through the third pipeline 30.

[0068] Optionally, the second one-way control member 31 is a one-way valve.

[0069] The first one-way control member 11 and the second one-way control member 31 are provided to increase the safety of the system.

[0070] In this embodiment, the first pipe section 101 is provided with a first on-off valve for controlling its on-off, the third pipe section 201 is provided with a second on-off valve for controlling its on-off, and the third pipeline 30 is provided with a third on-off valve for controlling its on-off.

[0071] In this embodiment, the brake release system also includes multiple fifth pipelines 70, each of which has a first end and a second end; the first end of each fifth pipeline 70 is used to pass the medium, and the second end of each fifth pipeline 70 is connected to the first end of the first pipeline 10; that is, the multiple fifth pipelines 70 are arranged in parallel, and at least some of the multiple fifth pipelines 70 are used to pass the medium into the first pipeline 10.

[0072] Specifically, each fifth pipeline 70 is provided with a fifth on-off valve for controlling the on-off of the fifth pipeline.

[0073] In the specific implementation process, the arrangement of multiple fifth pipelines 70 can also be cancelled, that is, the first port of the first pipeline 10 is no longer connected to the medium, and the medium is only connected to the first port of the second pipeline 20, and the third pipeline 30 is in a connected state, so that the medium passed through the first port of the second pipeline 20 can not only realize the movement of the valve core 51 from the disconnected position to the open position, but also move the partition 63 to the unlocked position to realize the release of the brake. In this way, the pipeline connection can be reduced and the cost can be reduced.

[0074] The utility model also provides a rotary motor mechanism, which comprises a rotary motor and the above-mentioned brake release system.

[0075] The utility model also provides an excavator, which comprises the above-mentioned slewing motor mechanism, that is, the excavator slewing mechanism comprises the above-mentioned slewing motor mechanism.

[0076] like Figure 1 As shown, two fifth pipelines 70 are provided, and the first ports of the two fifth pipelines 70 are P1 or P2 respectively, and the first port of the second pipeline 20 is P3; P1 and / or P2 usually pass a certain pressure oil, and when the rotary motor starts to rotate, the pressure oil will be introduced into the P3 port, and the valve core 51 will be pushed upward to be in the open position (i.e., the lower working position), and the pressure oil from P1 and / or P2 will enter the sealed sixth chamber 622 through the oil channel, push the partition 63 upward, so that the brake member 61 is changed to the brake release state, and then the A port and / or B port of the motor will rotate after the pressure oil is introduced.

[0077] When the motor stops working, P3 will cut off the pressure oil. At this time, the valve core 51 will move downward to the disconnected position (i.e., the upper working position) under the elastic force of the first elastic member 53, and the hydraulic oil in the sixth chamber 622 will flow to the motor housing through the second valve body 81. The partition 63 will reset and clamp the brake member 61 under the elastic force of the second elastic member 64, thereby realizing parking braking.

[0078] Among them, the brake release system also includes a sixth pipeline 80, a first end of the sixth pipeline 80 is connected to the fourth chamber 524, and a second end of the sixth pipeline 80 is connected to the second valve body 81; when the motor stops working, P3 will cut off the pressure oil, and at this time the valve core 51 will move downward to the disconnected position under the elastic force of the first elastic member 53, and the hydraulic oil in the sixth chamber 622 will flow to the fourth chamber 524 through the fourth pipeline 40, and then flow to the motor housing through the sixth pipeline 80 and the second valve body 81.

[0079] If the third pipeline 30 is not provided, when the hydraulic oil from the P1 port and the P2 port cannot be supplied into the sixth chamber 622 due to other factors, or when the pressure of the hydraulic oil supplied into the sixth chamber 622 through the P1 port and / or the P2 port is low, the partition 63 cannot be moved to the unlocked position, and thus the brake cannot be released. At this time, the rotation of the motor will burn the brake component 61, causing damage to the motor.

[0080] The brake release system of the present application is provided with a third pipeline 30. When the hydraulic oil introduced into the P1 port and / or the P2 port cannot release the brake, the hydraulic oil introduced into the P3 port will move the valve core 51 to the open position and enter the sixth chamber 622 through the third pipeline 30 to move the partition 63 to the unlocked position, thereby releasing the brake. When there is no abnormality in the oil flow through the P1 port and / or the P2 port, the third pipeline 30 can be in a disconnected state, and the hydraulic oil introduced into the P3 port only moves the valve core 51 to the open position.

[0081] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0082] The brake release system provided by the utility model includes a first pipeline 10, a second pipeline 20, a third pipeline 30, a first valve body 50, a fourth pipeline 40 and a brake assembly 60. The medium in the first pipeline 10 flows in the direction from the first end to the second end thereof, and a first connection point 12 is provided between the first end and the second end of the first pipeline 10; the medium in the second pipeline 20 flows in the direction from the first end to the second end thereof, and a second connection point 21 is provided between the first end and the second end of the second pipeline 20; the first end and the second end of the third pipeline 30 are respectively connected to the second connection point 21 and the first connection point 12, and the medium in the third pipeline 30 flows in the direction from the first end to the second end thereof, and the third pipeline 30 can be set to be on and off; the second end of the second pipeline 20 is connected to the first valve body 50, The medium is introduced into the first valve body 50, so that the valve core 51 of the first valve body 50 moves from the disconnected position to the open position; the first valve body 50 is arranged between the second end of the first pipeline 10 and the first end of the fourth pipeline 40, so that when the valve core 51 is in the open position, the second end of the first pipeline 10 and the first end of the fourth pipeline 40 are connected through the valve core 51; the second end of the fourth pipeline 40 is connected to the brake assembly 60, so that when the medium in the first pipeline 10 flows into the brake assembly 60 through the fourth pipeline 40, the brake member 61 of the brake assembly 60 is changed from the braking state to the brake release state. The brake release system of the present application solves the problem that the brake release system in the prior art cannot release the brake due to abnormal oil flow in the normal oil circuit, thereby causing damage to the motor.

[0083] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0084] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0085] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A brake release system, characterized in that: include: A first pipeline (10), wherein a medium in the first pipeline (10) flows in a direction from a first end to a second end thereof, and a first connection point (12) is provided between the first end and the second end of the first pipeline (10); a second pipeline (20), wherein a medium in the second pipeline (20) flows in a direction from the first end to the second end thereof, and a second connection point (21) is provided between the first end and the second end of the second pipeline (20); a third pipeline (30), wherein a first end and a second end of the third pipeline (30) are respectively connected to the second connection point (21) and the first connection point (12), a medium in the third pipeline (30) flows in a direction from the first end to the second end thereof, and the third pipeline (30) can be opened and closed; a first valve body (50), the second end of the second pipeline (20) being connected to the first valve body (50) so as to allow a medium to flow into the first valve body (50), thereby causing a valve core (51) of the first valve body (50) to move from a disconnected position to an open position; a fourth pipeline (40), wherein the first valve body (50) is arranged between the second end of the first pipeline (10) and the first end of the fourth pipeline (40), so that when the valve core (51) is in an open position, the second end of the first pipeline (10) and the first end of the fourth pipeline (40) are communicated through the valve core (51); A brake assembly (60), wherein the second end of the fourth pipeline (40) is connected to the brake assembly (60) so that when the medium in the first pipeline (10) flows into the brake assembly (60) through the fourth pipeline (40), the brake member (61) of the brake assembly (60) is changed from a braking state to a brake-released state.

2. The brake release system according to claim 1, characterized in that: The brake release system further comprises a first one-way control member (11), which is arranged on the first pipeline (10) so as to allow the medium in the first pipeline (10) to flow in a direction from the first end to the second end of the first pipeline (10); the first one-way control member (11) is located on a side of the first connection point (12) close to the first end of the first pipeline (10).

3. The brake release system according to claim 1, characterized in that: The brake release system further comprises a second one-way control member (31), which is arranged on the third pipeline (30) so as to allow the medium in the third pipeline (30) to flow in a direction from the first end to the second end of the third pipeline (30).

4. The brake release system according to claim 1, characterized in that: The brake release system further comprises a first one-way control member (11), the first one-way control member (11) being arranged on the first pipeline (10) so as to allow the medium in the first pipeline (10) to flow in a direction from the first end to the second end of the first pipeline (10); the first one-way control member (11) being located on a side of the first connection point (12) close to the first end of the first pipeline (10); the first one-way control member (11) being a one-way valve; and / or The brake release system further comprises a second one-way control member (31), which is arranged on the third pipeline (30) so as to allow the medium in the third pipeline (30) to flow in a direction from the first end to the second end of the third pipeline (30); the second one-way control member (31) is a one-way valve.

5. The brake release system according to claim 1, characterized in that: The brake release system further comprises a plurality of fifth pipelines (70), the first end of each of the fifth pipelines (70) being used for passing a medium, and the second end of each of the fifth pipelines (70) being connected to the first end of the first pipeline (10); and / or The medium is hydraulic oil.

6. The brake release system according to claim 1, characterized in that: The brake assembly (60) comprises: A brake chamber (62), wherein the brake member (61) is located outside the brake chamber (62); a partition (63), the partition (63) being arranged in the brake chamber (62) to divide the brake chamber (62) into a fifth chamber (621) and a sixth chamber (622) which are independent of each other; the fifth chamber (621) and the sixth chamber (622) are distributed along the second direction; The separator (63) is connected to the brake member (61), and the separator (63) is movably arranged along the second direction, so that the separator (63) drives the brake member (61) to switch between the braking state and the brake release state; The second end of the fourth pipeline (40) is in communication with the sixth chamber (622) so as to allow a medium to flow into the sixth chamber (622), thereby causing the partition (63) to move in a direction from the sixth chamber (622) to the fifth chamber (621).

7. The brake release system according to claim 6, characterized in that: The brake assembly (60) also includes a second elastic member (64), and the second elastic member (64) has a first end and a second end that are relatively arranged along its expansion and contraction direction; the expansion and contraction direction of the second elastic member (64) is parallel to or the same as the second direction; the second elastic member (64) is arranged in the fifth chamber (621), the first end of the second elastic member (64) is connected to the cavity wall of the fifth chamber (621), and the second end of the second elastic member (64) is connected to the partition (63).

8. The brake release system according to claim 6, characterized in that: The brake assembly (60) further comprises a connecting member (65), wherein the connecting member (65) is connected to the partition member (63) and to the brake member (61).

9. A rotary motor mechanism, characterized in that: A brake release system comprising the brake release system according to any one of claims 1 to 8.

10. An excavator, characterized in that: Includes the rotary motor mechanism described in claim 9.

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