Brake assembly, speed reducer assembly and winch assembly

Abstract

The utility model provides a brake assembly, a speed reducer assembly and a winch assembly, and is characterized in that the brake assembly is configured to be suitable for an electric motor and comprises an electromagnetic brake (101); and a housing (102), the housing (102) defining an internal space for accommodating the electromagnetic brake (101), and the housing (102) and the electromagnetic brake (101) being shaped in an integral configuration such that the combination of the housing (102) and the electromagnetic brake (101) can be mounted to and / or removed from the decelerator (300) together without changing the distance of an air gap in the electromagnetic brake (101); wherein the electromagnetic brake (101) is configured to be positionable between the electric motor and the decelerator (300) and spaced apart from the electric motor by the housing (102), and the brake (101) comprises a rotating shaft (1011), the upstream end of which is configured to be connectable to the electric motor and the downstream end of which is configured to be connectable to the decelerator.

Description

Technical Field

[0001] The present application relates to a brake assembly, in particular, the brake assembly can be adapted for use with an electric motor. In addition, the present application also relates to a reducer assembly. In addition, the present application also relates to a winch assembly. Background Art

[0002] In the prior art, industrial machinery (such as excavators) often uses hydraulic systems to provide power. However, with the trend of more widespread application of electricity today, especially the rapid development of new technologies related to new energy vehicles that use electricity as the main or even the only energy source, the demand for using electricity as the energy for driving the transmission system in industrial machinery has become increasingly urgent.

[0003] Based on this consideration, electric motors are usually introduced as power sources to drive actuators. The characteristics of electric motors themselves determine that the energy they output has high speed and low torque. The objects of industrial machinery often have the characteristics of large loads and large volumes, so they require energy with low speed but high torque to drive. Therefore, the direct output energy of electric motors cannot meet the requirements of the actuators of industrial machinery. In order to solve this problem, it is usually necessary to install a reducer downstream of the electric motor to adjust the above-mentioned expression of electric energy to meet the actual requirements of the actuators.

[0004] In order to more effectively and / or accurately control the reducer by the electric motor, a corresponding brake is required.

[0005] In the prior art, the power supply device is a hydraulic motor, so a hydraulic brake is used accordingly. For an electric motor, an electromagnetic brake is used accordingly.

[0006] However, the electromagnetic brakes in the prior art cannot directly meet the requirements of industrial machinery and still need to be improved.

[0007] In view of but not limited to the above situation, it is desirable to provide a new brake assembly adapted for use with an electric motor to solve or at least alleviate the above problems. Utility Model Content

[0008] The present application is directed to a brake assembly that is advantageous in at least one aspect over the prior art.

[0009] To this end, the present application provides, in one aspect, a brake assembly, characterized in that the brake assembly is configured to be suitable for an electric motor and includes: an electromagnetic brake; and a housing, the housing defining an internal space for accommodating the electromagnetic brake, and the housing and the electromagnetic brake being formed as an integral structure so that the combination of the housing and the electromagnetic brake can be installed together to the reducer and / or removed from the reducer without changing the distance of the air gap in the electromagnetic brake; wherein the electromagnetic brake is configured to be able to be positioned between the electric motor and the reducer and to be spaced relative to the electric motor by the housing, and the electromagnetic brake includes a rotating shaft, the upstream end of the rotating shaft being configured to be able to be connected to the electric motor and the downstream end of the rotating shaft being configured to be able to be connected to the reducer.

[0010] In a possible exemplary embodiment, the housing of the brake assembly has a top wall, a bottom wall opposite to the top wall, and a side wall, wherein a side of the housing opposite to the side wall and facing the reducer is open, and wherein the side wall connects the top wall and the bottom wall and is configured to face a side of the electric motor and is configured to be connected to the electric motor.

[0011] In a possible exemplary embodiment, the electromagnetic coil, magnet, friction plate and spring of the electromagnetic brake are received together in the inner space formed by the top wall, the bottom wall and the side wall.

[0012] In a possible exemplary embodiment, the housing and the electromagnetic brake are formed into an integral structure, including: the housing and the electromagnetic coil and the magnet can be configured as an integral structure, so that the combination of the housing and the electromagnetic coil and the magnet can be installed together to the reducer and / or removed from the reducer without changing the distance of the air gap.

[0013] In a possible exemplary embodiment, an opening is opened on the side wall of the housing for the rotating shaft of the electromagnetic brake to pass through so as to connect to the output shaft of the electric motor for torque transmission, wherein the electric motor has no end cover on the output side.

[0014] In a possible exemplary embodiment, the brake assembly further includes an upstream sealing device, which is disposed between the upstream spacer and the side wall and is configured to fluidically isolate an internal space formed by the electric motor and the housing.

[0015] In a possible exemplary embodiment, the brake assembly is positioned so as to space the inner space formed by the housing apart from the speed reducer and enable the brake assembly to be completely located outside the speed reducer.

[0016] In a possible exemplary embodiment, at least a portion of the friction plate of the electromagnetic brake of the brake assembly is made of aluminum alloy.

[0017] The present application also relates to a retarder assembly in another aspect, characterized by comprising: the brake assembly as described above; and a retarder, wherein the brake assembly is configured to be coupled to the retarder and brake the retarder.

[0018] The present application further relates to a hoisting assembly in yet another aspect, characterized in that it comprises: a reducer assembly as described above; and a hoisting mechanism, wherein the reducer assembly is configured to be coupled to the hoisting mechanism.

[0019] The brake assembly, reducer and / or hoist assembly according to the present application have at least the following advantages: a method of introducing an electromagnetic braking solution into a reducer is provided, which can be robustly and conveniently integrated with an electric motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A brake assembly according to one embodiment of the present application is shown.

[0021] Figure 2 A brake assembly according to an embodiment of the present application is shown, and its positional relationship relative to the speed reducer is shown.

[0022] Figure 3 An electromagnetic brake according to one embodiment of the present application is shown, shown in an axial direction.

[0023] Figure 4 Shows Figure 3 The electromagnetic brake in FIG. 1 is shown in a direction perpendicular to the axial direction. DETAILED DESCRIPTION

[0024] Some feasible implementations of the present application are described below with reference to the accompanying drawings. It should be noted that the drawings are not drawn to scale. Some details may be enlarged for clear display, and some unnecessary details are omitted.

[0025] like Figure 1-Figure 2 , a brake assembly 100 according to an embodiment of the present application and its positional relationship relative to the reducer 300 are shown. The brake assembly 100 includes an electromagnetic brake 101 and a housing 102. The housing 102 defines an internal space for accommodating the electromagnetic brake 101.

[0026] The electromagnetic brake 101 is positioned between the electric motor (not shown) and the reducer 300 (see Figure 2 ), that is, the electric motor and the reducer 300 sandwich the electromagnetic brake 101 between the two.

[0027] In addition, the electromagnetic brake 101 includes a rotating shaft 1011. The upstream end 1011a ( Figure 1The left side is shown in FIG. 10A ) is connected to (the output shaft of) the electric motor, and the downstream end 1011b of the rotating shaft 1011 is connected to (the input shaft of) the reducer.

[0028] In this way, the safety of the entire transmission system can be improved. This has at least the following advantages: even in the case of failure of the electric motor, since the electromagnetic brake 101 is positioned on the downstream side of the electric motor rather than the upstream side, the electromagnetic brake 101 will not fail due to the failure of the electric motor, but can still work normally independently, thereby improving the safety of the entire system.

[0029] The electromagnetic brake 101 also includes an electromagnetic coil 1012, which serves as a stator and is connected to the electromagnetic brake 1012 by a wire 3 (see Figure 3-Figure 4 ) is electrically connected to a power source so that the power supply of the electromagnetic brake 101 is independent of the electric motor. The power source can be configured to be independent of a power source (not shown) associated with the electric motor, or connected in parallel to the same power source associated with the electric motor. The electromagnetic coil 1012 is configured to generate and eliminate an electromagnetic field in an on-off manner. For example, when the electromagnetic coil 1012 is energized, an electromagnetic field is generated, and when the electromagnetic coil 1012 is de-energized, the electromagnetic field is eliminated. For another example, when the electromagnetic coil 1012 is de-energized, an electromagnetic field is generated; and when the electromagnetic coil 1012 is energized, the electromagnetic field is eliminated.

[0030] The electromagnetic brake 101 further includes a magnet 1013 as a rotor configured to be rotatably fastened to the rotating shaft 1011 and coaxially rotatable together with the rotating shaft 1011 .

[0031] The electromagnetic brake 101 further includes a friction plate 1014. The friction plate 1014 is positioned between the electromagnetic coil 1012 and the magnet 1013. The friction plate 1014 is also configured to increase the friction force between the electromagnetic coil 1012 and the magnet 1013 when in contact with the electromagnetic coil 1012 and the magnet 1013, thereby making the magnet 1013 stationary relative to the electromagnetic coil 1012. The friction plate 1014 may be made of an aluminum alloy, or at least a main body of the friction plate 1014 may be made of an aluminum alloy.

[0032] When the electromagnetic field is generated, the magnet 1013 is attracted by the electromagnetic coil 1012 and moves toward the electromagnetic coil 1012, thereby causing the magnet 1013 to contact the friction plate 1014. The static friction provided by the friction plate 1014 acts as a resistance to prevent the rotation of the magnet 1013, thereby driving the rotating shaft 1013 to stop rotating. In this way, the braking operation is completed.

[0033] When the electromagnetic field is eliminated, the magnet 1013 is pushed away from the electromagnetic coil 1012 by a spring (not shown), so that the magnet 1013 and the electromagnetic coil 1012 are separated by an air gap again. Accordingly, the magnet 1013 is separated from the friction plate 1014, so that the friction plate 1014 does not hinder the rotating shaft 1011 from driving the magnet 1013 to rotate.

[0034] The housing 102 has a top wall 102a, a bottom wall 102b opposite to the top wall 102a, and a side wall 102c. The side of the housing 102 opposite to the side wall 102c and facing the reducer 300 is designed to be open. The side wall 102c connects the top wall 102a and the bottom wall 102b and is configured to face the side of the electric motor and to be connected to the electric motor, for example, to be fastened to the output end of the electric motor by screws.

[0035] The electromagnetic coil 1012, the magnet 1013, the friction plate 1014 and the spring are received together in the internal space formed by the top wall 102a, the bottom wall 102b and the side wall 102c.

[0036] On the one hand, the housing 102 and the electromagnetic coil 1012 and the magnet 1013, or even the entire electromagnetic brake 101, can be configured as an integral structure. Thus, the combination of the housing 102 and the electromagnetic coil 1012 and the magnet 1013, or even the electromagnetic brake 101, can be installed together to the reducer 300 and / or removed from the reducer 300 without changing the distance of the air gap.

[0037] On the other hand, for the electromagnetic brake 101, the position of the electromagnetic coil 1012 relative to the housing 102 is set to be fixed, and the position of the magnet 1013 relative to the housing 102 is also set to be fixed, thereby, the position of the electromagnetic coil 1012 relative to the magnet 1013 is also fixed. In this way, it can be known that the distance of the air gap between the electromagnetic coil 1012 and the magnet 1013 is fixed.

[0038] In this way, when the electromagnetic brake 101 is installed on the reducer and / or removed from the reducer, the housing 102 can be installed and / or removed together with the electromagnetic brake 101, without separating the electromagnetic brake 101 relative to the housing 102, so that during such installation and / or removal, the relative position relationship between the electromagnetic coil 1012 and the magnet 1013 and the distance of the air gap therebetween are not changed. As a result, the electromagnetic brake 101 can be conveniently installed repeatedly on the reducer during use, and the trouble of recalibrating the electromagnetic brake 101 each time the electromagnetic brake 101 is reinstalled on the reducer in the prior art can be avoided (usually caused by the change in the relative position between the electromagnetic coil and the magnet).

[0039] For the housing 102 , an opening is opened on the side wall 102 c (at the center) for the rotating shaft 1011 (the upstream end) to pass through so as to connect the output shaft of the electric motor for torque transmission. Then the remaining space of the opening can be filled by the upstream spacer 4 .

[0040] Accordingly, the electric motor may not have an end cover on the output side, but may be directly connected to the outer surface of the side wall 102c of the housing 102. In this way, the material cost can be further reduced and the space can be solved, making the entire system more compact.

[0041] An upstream sealing device 5 may also be provided between the upstream spacer 4 and the side wall 102c to separate the electric motor from the internal space by fluid. This can prevent the internal space from being adversely affected by the fluid entering the electric motor and causing adverse effects on the electromagnetic brake 101. The upstream sealing device 5 may be implemented as a sealing ring, such as an O-ring.

[0042] The brake assembly 100 is positioned so as to separate the internal space formed by the housing 102 from the reducer 300 and to make the brake assembly 100 completely located outside the reducer 300. In this way, compared with the prior art solution of positioning the brake component inside the reducer, the technical solution disclosed in the present application can protect the electromagnetic brake 101, especially the electromagnetic elements (e.g., electromagnetic coil 1012 and / or magnet 1013) of the electromagnetic brake 101 away from the rotating elements in the reducer 300, thereby avoiding undesirable electromagnetic interference.

[0043] In addition, the downstream spacer 6 is placed between the brake assembly 100 and the reducer 300 and is configured to separate the internal space of the brake assembly 100 from the internal space of the reducer 300. An opening is provided at the center of the downstream spacer 6, for the downstream end of the rotating shaft 1011 to pass through and couple with the input shaft of the reducer 300. The opening may also be provided with a downstream sealing device 7, so as to fluidically insulate the brake assembly 100 from the reducer 300, thereby preventing the lubricating oil contained in the reducer 300 from leaking into the internal space of the brake assembly 100 and causing contamination of the various components of the electromagnetic brake 101. The downstream sealing device 7 may be implemented as a sealing ring, such as an O-ring.

[0044] The rotating shaft 1011 can be connected to the output shaft of the electric motor in a spline connection at the upstream end. A (first) seal, such as an O-ring, can be configured between the output shaft of the electric motor and the rotating shaft 1011, on the side of the spline connection close to the electromagnetic brake 102. Correspondingly, the rotating shaft 1011 can be coupled to the input shaft of the reducer 300 in a spline connection at the downstream end. A (second) seal, such as an O-ring, can be configured between the input shaft of the reducer 300 and the rotating shaft 1011, on the side of the spline connection close to the electromagnetic brake 102. In this way, the lubricating medium (such as grease, lubricating oil, etc.) in the spline can be prevented from entering the internal space of the brake assembly 100.

[0045] like Figure 3-Figure 4 As shown, the brake assembly 100 may further include a brake action detector 8 arranged on the electromagnetic brake 101. The brake action detector 8 is configured to sense the braking state (whether braking) of the electromagnetic brake 101 and transmit a signal representing the braking state to an electronic control unit (not shown for ease of understanding). In this way, the working state of the electromagnetic brake 101 can be conveniently monitored, thereby improving the robustness and safety of the entire system.

[0046] like Figure 3-Figure 4 As shown, the brake assembly 100 may also include an electromagnetic brake life detector 9 arranged on the electromagnetic brake 101. The electromagnetic brake life detector 9 is configured to sense the degree of wear of the friction plate 1014, and is configured to transmit a signal representing the degree of wear of the friction plate to the electronic control unit. In this way, the degree of wear of the friction plate can be monitored in time, and the friction plate can be replaced in time before failure due to excessive use, thereby improving the safety of the entire system and saving costs at the same time.

[0047] The present application also discloses a reducer assembly, which includes a reducer and a brake assembly 100 .

[0048] The brake assembly 100, specifically the housing 102 of the brake assembly, can be configured to be fixed to a reducer, specifically the flange 301 of the reducer, which can be formed as a structure integral with the support shaft 302. The opening for filling lubricating oil into the reducer can be configured on the top side of the support shaft flange 301. The support shaft 302 can also be provided with (for example, two) process holes for passing the screws for mounting the reducer to the reel.

[0049] It can be known that the reducer 300 referred to in the present application can be implemented as any other different suitable actuators according to actual conditions.

[0050] The present application also relates to a hoisting assembly, which comprises a hoisting mechanism and the above-mentioned speed reducer assembly, wherein the speed reducer assembly is configured to be coupled to the hoisting mechanism.

[0051] For example, the hoisting mechanism can be configured for an excavator, in particular for a boom and / or an outrigger of such an excavator, for example for movement of a bucket.

[0052] As used herein, the term “comprising” is open ended and includes one or more stated features, elements, components, or functions, but does not preclude the presence or addition of one or more other features, elements, components, functions, or combinations thereof.

[0053] The above description of the embodiments of the present application has been provided for the purpose of illustration and description. It is not intended to be exhaustive or to limit the present invention to the precise form disclosed. Within the scope of the present application, it is known that the various aspects, embodiments, examples and alternatives listed in the preceding paragraphs, claims and / or in the specification and drawings, in particular their individual features, can be carried out independently or in any combination. That is, all embodiments and / or the features of any embodiment can be in any way and / or combination unless these features are incompatible. It can be known that many modifications and changes are available to those skilled in the art. The selection and description of the embodiments are to properly explain the principles of the present invention and its practical application, so that other persons skilled in the art can understand the various embodiments of the present invention and the various modifications suitable for the intended specific use. The applicant reserves the right to change any originally submitted claims or submit any new claims accordingly, including modifying any originally submitted claims to be subordinate and / or incorporate any features of any other claims, although not originally required in this way.

Claims

1. A brake assembly, characterized in that: The brake assembly is configured for use with an electric motor and includes: an electromagnetic brake (101); and A housing (102), the housing (102) defining an internal space for accommodating the electromagnetic brake (101), and the housing (102) and the electromagnetic brake (101) being formed into an integral structure, so that the combination of the housing (102) and the electromagnetic brake (101) can be installed together to the reducer (300) and / or removed from the reducer (300) without changing the distance of the air gap in the electromagnetic brake (101); The electromagnetic brake (101) is configured to be positioned between the electric motor and the reducer (300) and is spaced apart from the electric motor by a housing (102), and the electromagnetic brake (101) includes a rotating shaft (1011), an upstream end of the rotating shaft (1011) being configured to be connected to the electric motor and a downstream end of the rotating shaft (1011) being configured to be connected to the reducer.

2. The brake assembly according to claim 1, characterized in that: The housing (102) of the brake assembly (100) comprises a top wall (102a), a bottom wall (102b) opposite to the top wall (102a), and a side wall (102c), wherein a side of the housing (102) opposite to the side wall (102c) and facing the reducer (300) is open. And wherein the side wall (102c) connects the top wall (102a) and the bottom wall (102b) and is configured to face one side of the electric motor and is configured to be connectable to the electric motor.

3. The brake assembly according to claim 2, characterized in that: The electromagnetic coil (1012), magnet (1013), friction plate (1014) and spring of the electromagnetic brake (101) are received together in an internal space formed by the top wall (102a), the bottom wall (102b) and the side wall (102c).

4. The brake assembly according to claim 3, characterized in that: The housing (102) and the electromagnetic brake (101) are formed into an integral structure, including: the housing (102) and the electromagnetic coil (1012) and the magnet (1013) can be configured into an integral structure, so that the combination of the housing (102) and the electromagnetic coil (1012) and the magnet (1013) can be installed together on the reducer (300) and / or removed from the reducer (300) without changing the distance of the air gap.

5. The brake assembly according to claim 4, characterized in that: An opening is provided on the side wall (102c) of the housing (102) for the rotating shaft (1011) of the electromagnetic brake (101) to pass through so as to connect to the output shaft of the electric motor for torque transmission, wherein the electric motor has no end cover on the output side.

6. The brake assembly according to claim 5, characterized in that It also includes an upstream sealing device (5), which is disposed between the upstream partition (4) and the side wall (102c) and is configured to fluidically separate the internal space formed by the electric motor and the housing (102).

7. The brake assembly according to claim 6, characterized in that The brake assembly (100) is positioned so as to space the inner space formed by the housing (102) relative to the reducer (300) and enable the brake assembly (100) to be completely located outside the reducer (300).

8. The brake assembly according to any one of claims 1 to 7, characterized in that: At least a portion of a friction plate (1014) of an electromagnetic brake (101) of a brake assembly is made of an aluminum alloy.

9. A reducer assembly, characterized in that: include: The brake assembly according to any one of claims 1 to 8; and The brake assembly is configured to be coupled to the retarder and brake the retarder.

10. A winch assembly, characterized in that: include: The reducer assembly according to claim 9; and A hoisting mechanism, wherein the speed reducer assembly is configured to be coupled to the hoisting mechanism.

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