Bidirectional rotation backstop and permanent magnet roller with same
阅读说明:本技术 一种双向旋转逆止器及具有其的永磁滚筒 (Bidirectional rotation backstop and permanent magnet roller with same ) 是由 高冠华 于 2019-11-27 设计创作,主要内容包括:本申请公开了一种双向旋转逆止器及具有其的永磁滚筒,所述双向旋转逆止器包括:外壳、内圈、外圈、转矩传递组件、至少一个外盘及至少一个内盘;外壳与旋转部件连接,内圈固定不动,转矩传递组件设置在内圈与外圈之间,用于实现外圈相对内圈的单向旋转;外盘和内盘设置在外壳与外圈之间,通过调整外盘与内盘的结合状态,可实现外壳相对内圈自由转动或传递转矩。所述永磁滚筒包含如上所述的双向旋转逆止器。本申请的优点是:双向旋转逆止器内圈固定,外圈旋转,与现有逆止器结构恰好相反,并解决了传统逆止器只能单向旋转的限制,当需要逆止器反向旋转时,通过调整外盘与内盘的结合状态,即可实现;同时解决了永磁滚筒在启动时需要反转的问题。(The application discloses two-way rotation backstop and have its permanent magnetism cylinder, two-way rotation backstop includes: the torque transmission assembly comprises a shell, an inner ring, an outer ring, a torque transmission assembly, at least one outer disc and at least one inner disc; the outer shell is connected with the rotating component, the inner ring is fixed, and the torque transmission component is arranged between the inner ring and the outer ring and used for realizing the unidirectional rotation of the outer ring relative to the inner ring; the outer disc and the inner disc are arranged between the outer shell and the outer ring, and the outer shell can freely rotate relative to the inner ring or transmit torque by adjusting the combination state of the outer disc and the inner disc. The permanent magnet drum comprises the bidirectional rotation backstop. The application has the advantages that: the inner ring of the bidirectional rotation backstop is fixed, the outer ring rotates, the structure is just opposite to that of the traditional backstop, the limitation that the traditional backstop can only rotate in one direction is solved, and when the backstop needs to rotate in the reverse direction, the effect can be realized by adjusting the combination state of the outer disc and the inner disc; meanwhile, the problem that the permanent magnet roller needs to be reversed when being started is solved.)
1. A bidirectional rotary backstop, comprising:
a housing (1) for connection to a rotating member and for rotation about an axis of rotation;
the inner ring (2) is arranged in the shell (1) and is fixed;
an outer ring (3), the outer ring (3) being disposed in the housing (1) and radially outward of the inner ring (2);
a torque transfer assembly (7) disposed between the inner race and the outer race, the outer race being freely rotatable relative to the inner race in a first rotational direction, the torque transfer assembly being configured to couple the inner race and the outer race and prevent rotation of the outer race relative to the inner race in a second rotational direction;
at least one outer disc (4), said outer disc (4) being connected to a radially inner surface of said housing and being freely movable in the axial direction;
at least one inner disc (5), said inner disc (5) being connected to a radially outer surface of said inner ring and being freely movable in the axial direction;
the outer disc and the inner disc have a coupled state in which torque can be transmitted therebetween and a decoupled state; in the separated state, the outer disc can freely rotate relative to the inner disc;
the housing (1) and the outer ring are provided with a support in a radial direction such that the housing is free to rotate relative to the outer ring; or the shell (1) and the inner ring are provided with supports in the radial direction, so that the shell can freely rotate relative to the inner ring.
2. The bidirectional rotary backstop of claim 1, further comprising:
the pushing mechanism (6) is fixedly connected with the inner ring and used for mutually switching the outer disc and the inner disc between a combined state and a separated state; and a thrust bearing or a thrust needle roller and a retainer assembly are arranged between the contact surfaces of the pushing mechanism and the inner disc or the outer disc.
3. The bidirectional rotary backstop of claim 2 wherein said urging mechanism comprises:
a piston (61) having one axial end for applying an axial force to the outer or inner disc;
a spring (62) for generating an axial force in the axial direction to urge the piston in the axial direction toward the outer or inner disc.
4. The bidirectional rotary backstop of claim 3 wherein said urging mechanism further comprises:
a housing (63) forming an annular oil reservoir chamber (64) with the piston;
and the pump station is communicated with the annular oil storage cavity through the shell, and is used for injecting hydraulic oil into the annular oil storage cavity so as to overcome the axial force applied by the piston and make the piston move towards the direction far away from the outer disc or the inner disc.
5. The bidirectional rotary backstop of claim 4 wherein said urging mechanism further comprises:
a thrust adjustment mechanism (65) fixedly connected with the inner ring and the housing (63);
a plurality of springs (62) are uniformly distributed in the circumferential direction of the piston, and a pressing ring (66) is arranged at one end, far away from the outer disc or the inner disc, of each spring;
the thrust adjusting mechanism (65) is provided with an adjusting screw (68) at a position corresponding to each spring, and the adjusting screw is used for adjusting the compression amount of the spring.
6. The bidirectional rotary backstop of claim 5 wherein said urging mechanism further comprises: the abrasion indicating pin, abrasion indicating pin one end with piston is with detachable mode fixed connection, and the other end passes along the axis direction thrust adjustment mechanism (65) and outwards stretches out a section length, abrasion indicating pin is provided with the scale mark along its axial.
7. The bidirectional rotary backstop of claim 1, further comprising:
the first end cover (11) is fixedly connected with the axial end face of the shell (1), and a rolling bearing is arranged between an inner hole of the first end cover and the inner ring.
8. The bidirectional rotary backstop of claim 7 wherein axial sides of said outer race are provided with thrust bearings or thrust needles and retainer assemblies.
9. The bidirectional rotation brake of claim 4, wherein a rolling bearing or a copper sleeve is disposed radially between the outer shell and the housing.
10. A permanent magnet drum, characterized in that it comprises a bidirectional rotation backstop as claimed in any one of claims 1 to 9.
Technical Field
The application relates to the technical field of backstops, in particular to a bidirectional rotating backstop and a permanent magnet roller with the same.
Background
In the field of material transport, in particular when bulk material is transported by means of conveyors, it is often necessary to limit the direction of material transport, for example, inclined belt conveyors. During normal transported substance material, the conveyer upwards moves, when equipment trouble or power failure suddenly appear, needs the reverse operation of restriction conveyer to prevent system damage or personnel's injury.
With the development of industrial technology, the driving technology is also updated at present. The driving system is updated to direct drive of the roller from the original motor acceleration and deceleration driving roller, namely the current permanent magnet roller. The permanent magnet roller is opposite to the traditional roller in structure, a roller shaft of the traditional roller is fixedly connected with a roller body, the general roller shaft extends out of two axial end faces of the roller body, one end of the roller shaft is connected with an output shaft of a speed reducer, an output shaft at the other end can be used for installing a backstop, an inner ring of the backstop and the roller shaft rotate synchronously, and an outer ring of the backstop is limited on a base through a force arm. When the drum normally works, the drum shaft and the drum body synchronously rotate, the inner ring of the backstop synchronously rotates along with the drum shaft, and when the drum trends to reversely rotate, the backstop plays a role to prevent the drum from reversely rotating.
And the structure of permanent magnetism cylinder is different with traditional cylinder structure, and the drum shaft both ends of permanent magnetism cylinder are fixed on the base, can not rotate, and the barrel is rotatory around the drum shaft, has just so appeared the first problem: the backstop has no mounting position and the drum shaft is stationary.
In addition, since the driving principle of the permanent magnet drum is different from the prior art, another problem exists in the starting of the permanent magnet drum: the barrel of permanent magnetism cylinder can have the condition of reversal, if reuse the backstop of original structure, the backstop will directly prevent the rotation of cylinder, leads to unable normal start.
When a plurality of backstops are used, the stress of the plurality of backstops has asynchronism, so that the model selection coefficient of each backstop is overlarge; even if the types of the backstops are enlarged, if a plurality of backstops have larger installation errors during installation, the backstops stressed firstly still can be overloaded, and the other backstops are not stressed, so that the backstops are damaged quickly.
The problem four is that the permanent magnet roller can be directly driven, a motor and a speed reducer in the existing drive are not needed, and the permanent magnet roller can be directly installed on a driving machine, so that the force arm of the backstop also loses a limiting base, and the reverse backstop force cannot be provided.
Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.
Content of application
It is an object of the present application to provide a bidirectional rotation backstop and a permanent magnet drum having the same that overcomes or at least alleviates at least one of the above-mentioned deficiencies of the prior art.
To achieve the above object, the present application provides a bidirectional rotation brake, comprising:
a housing for connection with the rotary member and for rotation about the axis of rotation;
an inner ring disposed in the housing and fixed;
an outer race disposed in the housing and radially outward of the inner race; the outer ring is arranged radially outward of the inner ring;
a torque transfer assembly disposed between the inner race and the outer race, the outer race being free to rotate in a first rotational direction relative to the inner race, the torque transfer assembly being configured to couple the inner race and the outer race and prevent rotation of the outer race in a second rotational direction relative to the inner race;
at least one outer disc connected to a radially inner surface of the housing and freely movable in the axial direction;
at least one inner disc connected to a radially outer surface of the inner ring and freely movable in the axial direction;
the outer disc and the inner disc have a coupled state in which torque can be transmitted therebetween and a decoupled state; in the separated state, the outer disc can freely rotate relative to the inner disc;
the shell and the outer ring are provided with supports in the radial direction, so that the shell can freely rotate relative to the outer ring; or the outer shell and the inner ring are provided with supports in the radial direction, so that the outer shell can freely rotate relative to the inner ring.
Preferably, the bidirectional rotation check device further includes:
the pushing mechanism is fixedly connected with the inner ring and used for mutually switching the outer disc and the inner disc between a combined state and a separated state; and a thrust bearing or a thrust needle roller and a retainer assembly are arranged between the contact surfaces of the pushing mechanism and the inner disc or the outer disc.
Preferably, the pushing mechanism comprises:
a piston having one axial end for applying an axial force to the outer or inner disc;
a spring for generating an axial force in the axial direction to urge the piston in the axial direction toward the outer or inner disc.
Preferably, the pushing mechanism further comprises:
the shell and the piston form an annular oil storage cavity;
and the pump station is communicated with the annular oil storage cavity through the shell, and is used for injecting hydraulic oil into the annular oil storage cavity so as to overcome the axial force applied by the piston and make the piston move towards the direction far away from the outer disc or the inner disc.
Preferably, the pushing mechanism further comprises:
the thrust adjusting mechanism is fixedly connected with the inner ring and the shell;
a plurality of springs are uniformly distributed in the circumferential direction of the piston, and a pressing ring is arranged at one end, far away from the outer disc or the inner disc, of each spring;
the thrust adjusting mechanism is provided with an adjusting screw at a position corresponding to each spring, and the adjusting screw is used for adjusting the compression amount of the spring.
Preferably, the pushing mechanism further comprises: the piston is fixedly connected with the piston in a detachable mode, the other end of the piston penetrates through the thrust adjusting mechanism in the axial direction and extends out for a length, and the abrasion indicating pin is provided with scale marks along the axial direction of the abrasion indicating pin.
Preferably, the bidirectional rotation check device further includes:
the first end cover is fixedly connected with the axial end face of the shell, and a rolling bearing is arranged between an inner hole of the first end cover and the inner ring.
Preferably, the axial two sides of the outer ring are provided with a thrust bearing or a thrust needle roller and a retainer assembly.
Preferably, a rolling bearing or a copper bush is arranged between the outer shell and the housing in the radial direction.
The application also provides a permanent magnet drum, permanent magnet drum contains as above two-way rotation backstop.
The beneficial effect of this application lies in:
the bidirectional rotation backstop can be switched between a combined state and a separated state through the outer disc and the inner disc, and can meet rotation requirements in different directions; when torque does not need to be transmitted between the outer shell and the inner ring, the outer disk and the inner disk are in a separated state, and the outer shell can freely rotate relative to the inner ring in two directions. When torque needs to be transmitted between the outer shell and the inner ring, the outer disc and the inner disc are in a combined state, the outer shell can only freely rotate in one direction relative to the inner ring, and the other direction realizes a non-return effect; if the torque transmitted in the combined state of the outer disc and the inner disc exceeds a set value, the combined surface of the outer disc and the inner disc slips, and the backstop can be prevented from being damaged; if a plurality of backstops are installed, the load balancing among the plurality of backstops can be realized at the moment, so that the types of the plurality of backstops are reduced.
In addition, when the bidirectional rotation backstop works, the inner ring is fixed, and the shell rotates along with equipment needing backstopping, so that the bidirectional rotation backstop is just opposite to the structure of the existing backstop, and can be applied to the permanent magnet roller in the latest technology.
Moreover, this application is through first end cover and shell fixed connection to be provided with the bearing support between the hole of first end cover and inner circle, its advantage lies in having reduced the model of bearing, has reduced product cost.
Fourth, this application still is provided with the wearing and tearing indicator pin, if the back that appears wearing and tearing between outer dish and the inner disc, can show the wearing and tearing volume through the scale on the wearing and tearing indicator pin to can in time adjust the spring force, with the ability of guaranteeing transmission torque between outer dish and the inner disc.
Fifth, the two-way non-return ware that changes of this application need not additionally install the contrary arm of force of ending, simple structure, simple to operate.
Drawings
Fig. 1 is a schematic half-sectional structure view of a bidirectional rotation check device according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural diagram of the connection between the bidirectional rotation check device and the permanent magnet drum.
1-a housing; 2-inner ring; 3-an outer ring; 4-outer disc; 5-inner disc; 6-a pushing mechanism; 7-a torque transfer assembly; 8-a bidirectional rotation backstop; 9-axis; 10-a permanent magnet drum; 11-a first end cap; 12-a rolling bearing; 13-positioning plate; 14-framework oil seal; 15-copper sheathing; 71-a limiting block; 31-thrust needle and cage assembly; 61-a piston; 62-a spring; 63-a housing; 64-an annular reservoir chamber; 65-a thrust adjustment mechanism; 66-a pressure ring; 67-the interface; 68-adjusting screws; 69-thrust roller pin and cage assembly.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner and are not to be considered limiting of the scope of the present application.
As shown in fig. 1, a schematic half-sectional structure of a bidirectional rotation check according to one embodiment completed by the present application is shown. The double-
The housing 1 is annular in configuration for connection with a rotating member and rotates about an axis of
In this embodiment, the hole of shell 1 sets up to have the structure that the aperture changes in the axial, and middle part aperture is minimum for processing the internal spline, both ends aperture all is greater than the major diameter size of internal spline, the hole one end of shell 1 is through the cooperation of the tang of interior tang and
The
The inner ring 2 is arranged in the shell 1 and is fixed; in this embodiment, the structure of the inner ring 2 is the same as that of the inner ring of the prior backstop, the rolling
An
In this embodiment, the thrust needle roller and
A
The
at least one inner disc 5, inner disc 5 set up to annular friction disc, and the hole of inner disc 5 is provided with the internal spline, the internal spline is connected with the external spline cooperation of
The
The
It is understood that the separated state described in the present embodiment means that the pressing force for transmitting the torque between the outer disc and the inner disc is removed regardless of whether the outer disc and the inner disc are in contact or completely separated.
In the present embodiment, the housing 1 is provided with a support in the radial direction with the inner ring 2 via the
The direction of the
The pushing mechanism 6 is fixedly connected with the inner ring 2 and used for mutually switching the
In this embodiment, the pushing mechanism 6 includes a
One axial end of the
The
The
The
A plurality of
It can be understood that, after the
Optionally, for the convenience of transportation and hoisting of the bidirectional rotation backstop, the shell 1 can be further far away from a side face of the first end cover, and the limiting cover is used for axial movement of the axial limiting pushing mechanism 6. For example, the limit cover, after being fixedly connected with the side surface of the housing, further has a limit surface, the limit surface is located at the right side of the
In the present embodiment, the
In the present embodiment, the
The
In this embodiment, a
As shown in fig. 1, seal rings are provided between the
As shown in fig. 1, in the figure, a sealed space is formed by the housing 1, the
In order to ensure that the bidirectional rotation backstop has more stable performance during working, after the bidirectional rotation backstop is installed, the inner ring of the bidirectional rotation backstop needs to be axially positioned so as to limit the movement of the inner ring in the direction of the
The bidirectional rotation backstop can be switched between a combined state and a separated state through the
In addition, when the bidirectional rotation backstop works, the inner ring 2 is fixed, and the shell 1 rotates along with equipment, so that the bidirectional rotation backstop is just opposite to the structure of the existing backstop and can be applied to a permanent magnet roller in the latest technology.
Moreover, this application is through
Fourth, this application still is provided with the wearing and tearing indicator pin, if the back that appears wearing and tearing between outer dish and the inner disc, can show the wearing and tearing volume through the scale on the wearing and tearing indicator pin to can in time adjust the spring force, with the ability of guaranteeing transmission torque between outer dish and the inner disc.
Fifth, the two-way non-return ware that changes of this application need not additionally install the contrary arm of force of ending, simple structure, simple to operate.
The present application further provides a permanent magnet drum, as shown in fig. 2, comprising the bidirectional rotation brake as described above. The figure only shows the connection of the bidirectional rotation backstop and the permanent magnet roller, and the bidirectional rotation backstop can be connected with a side plate of the permanent magnet roller. Because the pushing mechanism 6 in the
In order to ensure that the bidirectional rotation backstop has more stable performance during working, after the bidirectional rotation backstop is installed, the inner ring of the bidirectional rotation backstop needs to be axially positioned so as to limit the movement of the inner ring in the direction of the
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
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