CN104613104A - Locking brake device - Google Patents
Locking brake device Download PDFInfo
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- CN104613104A CN104613104A CN201510050284.XA CN201510050284A CN104613104A CN 104613104 A CN104613104 A CN 104613104A CN 201510050284 A CN201510050284 A CN 201510050284A CN 104613104 A CN104613104 A CN 104613104A
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- pressing plate
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Abstract
The invention provides a locking brake device and relates to the field of mechanical engineering. The locking brake device comprises a brake fixed base, a piston, a lever support, a brake press plate and at least one brake block. A brake hydraulic oil inlet pipeline and a piston cavity are arranged inside the brake fixed base, and the piston cavity is communicated with the brake hydraulic oil inlet pipeline. The piston comprises a piston head and a stepped piston rod, the piston head is installed in the piston cavity, the stepped piston rod is fixedly connected with the piston head, and the piston moves in the piston cavity in the axial direction of the stepped piston rod under the effect of hydraulic oil inside the brake hydraulic oil inlet pipeline. The lever support is fixedly connected to the brake fixed base. The brake press plate is hinged to the lever support and is connected with the stepped piston rod, so axial movements of the stepped piston rod can drive the brake press plate to rotate. Each brake block is provided with a brake end and a friction end, wherein the brake end is connected with a component needing brake, and the friction end is clamped between the brake fixed base and the brake press plate. The locking brake device can achieve high-power locking by utilizing low-power input, compensate for micro deformation generated in the process of locking, and improve accuracy.
Description
Technical field
The present invention relates to mechanical engineering field, particularly relate to a kind of locking braking device.
Background technique
In the prior art, locking braking device, when braking the parts of numerical control machine tool or brake automotive hub, drives annular piston mainly through hydraulic pressure or air pressure, forces flexible locking piece to have a micro-stroke, produce distortion; The distortion of elastic element makes lock sheet and rotary component produce friction torque, produces braking force, thus realizes locking.
This mode has following shortcoming: 1, flexible locking piece is originally made up of spring steel, need to input great power and could realize locking reliably, the distortion of its elastic element itself just needs to consume larger a part of power, remainingly just can change into locking power, therefore there is the phenomenon that energy consumption is excessive; 2, whole annular piston area of contact is comparatively large, and respective thrust is also comparatively large, causes some driving elements of locking braking device or related elements to there is micro-strain, will have a strong impact on the precision of lathe, very easily make lathe produce distortion, lose precision.
Therefore be badly in need of a kind of technology to solve the problem, to make locking braking device while realizing reliable locking effect, can energy consumption be reduced, and avoid micro-strain as far as possible.
Summary of the invention
An object of the present invention is to provide a kind of locking braking device reducing energy consumption.
The present invention's further object is the micro-strain that will reduce the related elements caused when locking braking device locking.
Especially, the invention provides a kind of locking braking device, comprising: brake fixed pedestal, have brake hydraulic in-line and piston cavity in it, described piston cavity is connected with described brake hydraulic in-line; Piston, comprise piston crown and stepped piston rod, described piston crown is installed in described piston cavity, described stepped piston rod is fixedly connected with described piston crown, moving axially along described stepped piston rod in described piston cavity under the effect of the hydraulic oil of described piston in described brake hydraulic in-line; Lever support, is fixedly connected on described brake fixed pedestal; Brake pressing plate, is articulated with described lever support and is connected with described stepped piston rod, makes moving axially of described stepped piston rod drive described brake press plate rotary; At least a slice brake block, brake block described in every sheet has the dog point be connected with for brake member, and is sandwiched in the friction side between described brake fixed pedestal and described brake pressing plate.
Alternatively, described stepped piston rod comprises the first stepped stem, second stepped stem of dead in line, described first stepped stem is positioned at the tail end of described stepped piston rod, and described second ladder shank diameter is greater than the diameter of described first stepped stem, is fixedly connected with described first stepped stem; Described locking braking device also comprises spherical joint, and described first stepped stem, through described spherical joint, extends into described brake pressing plate, and is connected with described brake pressing plate; Described spherical joint is sandwiched between described second stepped stem and described brake pressing plate, and the outer convex spherical of described spherical joint contacts with described brake pressing plate, and the contacting point of described brake pressing plate and described outer convex spherical is the interior concave spherical surface adapted.
Alternatively, described brake pressing plate is provided with the first cylindrical cavity and second cylindrical cavity of dead in line, and the diameter of described first cylindrical cavity is less than the diameter of described second cylindrical cavity; Described first stepped stem is through described first cylindrical cavity, and the nut check that is locked, in the annular bottom wall of described second cylindrical cavity, accompanies annular gasket between described locking nut and described annular bottom wall; Described locking braking device also comprises cotter pin, and described cotter pin is through the nut groove of described locking nut and the tail hole of described first stepped stem.
Alternatively, described stepped piston rod also comprises the 3rd stepped stem, the diameter of described 3rd stepped stem is greater than the diameter of described second stepped stem, the described axis of the 3rd stepped stem and the dead in line of described second stepped stem, and one end of described 3rd stepped stem is fixedly connected on described piston crown; Described 3rd stepped stem is provided with at least one axially extended cylindrical hole along described stepped piston rod, and each cylindrical hole lays a spring, and described spring contacts with described brake fixed pedestal away from one end of corresponding described cylindrical hole.
Alternatively, described spring is cylindrically coiled spring or belleville spring.
Alternatively, described brake pressing plate by hinge in described lever support.
Alternatively, described lever support comprises one piece of base plate and two pieces of risers, described base plate has the first through hole passed for piston, and riser described in every sheet has the second through hole passed for described bearing pin, and described second through hole is provided with the Cock screw of the position limiting described bearing pin.
Alternatively, described brake fixed pedestal has the bump extended in the direction of the bottom plane perpendicular to described brake fixed pedestal, and the friction side of described brake block is sandwiched between the described bump of described brake fixed pedestal and described brake pressing plate.
Alternatively, piston crown side is provided with at least one annular seal groove, is provided with a seal ring in each described annular seal groove, and the inner circumference of each described seal ring and described piston cavity is sealed and matched.
The present invention at least has following technique effect:
1, brake pressing plate of the present invention owing to can rotate under the drive of piston, therefore, it is possible to along with the axial motion change of piston is to the pressure of the friction side of brake blocks folded between all the other brake fixed pedestals, thus change the friction side of brake block and the frictional force for brake member, because it is a leverage, make piston just can realize producing enough large pressure to the friction side of brake block under the effect providing a small amount of power, therefore, it is possible to realize powerful lock ability with low power hydraulic pressure or air pressure input, reduce energy consumption.
2, spherical joint of the present invention is owing to being sandwiched between the second stepped stem and brake pressing plate, and the contacting point of the outer convex spherical of brake pressing plate and spherical joint is the interior concave spherical surface adapted, therefore brake in the movement process of pressing plate, to brake the attitude of pressing plate with the continuous self-adaptative adjustment of spherical joint that contacts with each other of brake pressing plate, make its all the time can not with piston interference, thus the micro-deformation produced when compensating locking, the micro-strain of the related elements caused when reducing the locking of locking braking device, improves precision.
According to hereafter by reference to the accompanying drawings to the detailed description of the specific embodiment of the invention, those skilled in the art will understand above-mentioned and other objects, advantage and feature of the present invention more.
Accompanying drawing explanation
Hereinafter describe specific embodiments more of the present invention with reference to the accompanying drawings by way of example, and not by way of limitation in detail.Reference character identical in accompanying drawing denotes same or similar parts or part.It should be appreciated by those skilled in the art that these accompanying drawings may not be drawn in proportion.In accompanying drawing:
Fig. 1 is the sectional drawing of locking braking device according to an embodiment of the invention;
Fig. 2 is the schematic diagram that the shown bearing pin of locking braking device of Fig. 1 is positioned at diverse location.
Embodiment
Fig. 1 is the sectional drawing of locking braking device according to an embodiment of the invention.In the embodiment shown in fig. 1, the locking braking device of the embodiment of the present invention, can comprise brake fixed pedestal 2, piston 15, lever support 6, brake block 13.Have brake hydraulic in-line 1 and piston cavity in brake fixed pedestal 2, piston cavity is connected with brake hydraulic in-line 1; Piston 15 comprises piston 15 head and stepped piston rod, piston 15 head is installed in piston cavity, also some is installed in piston cavity stepped piston rod, when piston 15 is positioned at maximum position and minimum position, stepped piston rod 15 all some not in piston cavity, stepped piston rod is fixedly connected with piston crown, moving axially along stepped piston rod in piston cavity under the effect of the hydraulic oil of piston 15 in brake hydraulic in-line 1.Piston crown side is provided with at least one annular seal groove, is provided with a seal ring 3 in each annular seal groove, and each seal ring 3 is sealed and matched with the inner circumference of piston chamber.Lever support 6 is fixedly connected on brake fixed pedestal 2 by parts such as set screw 5 grade.Brake pressing plate 12 is articulated with lever support 6 and is connected with stepped piston rod, makes moving axially of stepped piston rod drive brake pressing plate 12 to rotate.In the embodiment shown in fig. 1, brake pressing plate 12 is articulated with lever support 6 by bearing pin 14, the two Spielpassung, and bearing pin 14 through lever support 6, brake pressing plate 12, and limits the position of bearing pin 14 by Cock screw 11.In other embodiments of the invention, other articulated form can be had.Brake block 13 has the friction side be sandwiched between brake fixed pedestal 2 and brake pressing plate 12, and the dog point be connected with for brake member.Particularly, the dog point of brake block 13 is connected with rotation or moving member, and when brake block 13 is braked, force the moving member be attached thereto to be braked, it also may be used for the braking of automotive hub.When brake pressing plate 12 is by piston 15 brought into motion, increases or reduce the pressure to friction side.In the embodiment shown in fig. 1, brake block 13 is 1, and in other embodiments of the invention, brake block 13 can be multi-disc, to form the reinforcement structure of overlapping, ensures better reliable lock.
In the embodiment shown in fig. 1, stepped piston rod comprises the first stepped stem, second stepped stem of dead in line, first stepped stem is positioned at the tail end of stepped piston rod, second ladder shank diameter is greater than the diameter of the first stepped stem, be fixedly connected with the first stepped stem, locking braking device also comprises spherical joint 7, and the first stepped stem is through spherical joint 7, extend into brake pressing plate 12, and be connected with brake pressing plate 12; Spherical joint 7 is sandwiched between the second stepped stem and brake pressing plate 12, the outer convex spherical of spherical joint 7 contacts with brake pressing plate 12, the bottom (one side contacted with the second stepped stem in other words) of spherical joint 7 can be plane, and brake pressing plate 12 is the interior concave spherical surface adapted with the contacting point of outer convex spherical.Spherical joint 7 place can ensure that piston 15 is under the vertical state of maintenance, just can lock.If do not have spherical joint 7, so as locked, piston 15 must have slope trend.Therefore, the locking braking device of the present invention with spherical joint 7 is adaptive, universal, lever-type locking braking device.
As seen from Figure 1, brake pressing plate 12 is provided with the first cylindrical cavity and second cylindrical cavity of dead in line, and the diameter of the first cylindrical cavity is less than the diameter of the second cylindrical cavity.First stepped stem is through the first cylindrical cavity, and the nut 8 that is locked lock onto the annular bottom wall of the second cylindrical cavity, accompanies annular gasket 10 between locking nut 8 and annular bottom wall.Locking braking device also comprises cotter pin 9, and cotter pin 9 is through the nut groove of locking nut 8 and the tail hole of the first stepped stem.After locking nut 8 is tightened, cotter pin 9 is inserted in the tail hole of nut groove and the first stepped stem, and cotter pin 9 afterbody is pulled open, prevent relatively rotating of locking nut 8 and the first stepped stem bolt.Like this, spherical joint 7, brake pressing plate 12 are enclosed within the first stepped stem, are connected as a single entity.When piston 15 moves upward, second stepped stem moves upward, the spherical top of spherical joint 7 is to brake pressing plate 12, surface of contact due to brake pressing plate 12 and spherical joint 7 is sphere and the pressing plate 12 that brakes is articulated with lever support 6, therefore the pressing plate 12 that brakes around bearing pin 14 small angle rotation, and can compress brake block 13 under the restriction of spherical joint 7 and bearing pin 14; When piston 15 moves downward, first stepped stem moves downward, moving downward to pressing down the pressing plate 12 that the brakes pressing plate 12 that makes to brake with its fixing locking nut 8, around bearing pin 14 small angle rotation, and brake block 13 can be loosened under the restriction of spherical joint 7 and bearing pin 14.Like this, because of the interference that angular deflection causes when can automatically adapt to stop tight, overcome not tight, incessantly phenomenon of stopping, there is energy-conserving and environment-protective, the life-span is long, reliability is high advantage.
In the embodiment shown in fig. 1, stepped piston rod also comprises the 3rd stepped stem, the diameter of the 3rd stepped stem is greater than the diameter of the second stepped stem, the axis of the 3rd stepped stem and the dead in line of the second stepped stem, and one end of the 3rd stepped stem is fixedly connected on piston crown; In the embodiment shown in fig. 1, its other end can be connected to the second stepped stem, in other embodiments of the invention, also can have other stepped stem in the middle of itself and the second stepped stem.As seen from Figure 1,3rd stepped stem is provided with at least one axially extended cylindrical hole along stepped piston rod, each cylindrical hole lays a spring (can be cylindrically coiled spring 4 or belleville spring), and spring contacts (i.e. the inwall of piston chamber) with brake fixed pedestal 2 away from one end of corresponding cylindrical hole.
In the embodiment shown in fig. 1, lever support 6 comprises one piece of base plate and two pieces of risers, base plate has the first through hole passed for piston 15, and every sheet riser has the second through hole passed for bearing pin 14, and the second through hole is provided with the Cock screw 11 of the position limiting bearing pin 14.The end of Cock screw 11 can press the surface of bearing pin 14.Have the bump extended in the direction of the bottom plane perpendicular to brake fixed pedestal 2 at brake fixed pedestal 2, the friction side of brake block 13 is sandwiched between the bump of brake fixed pedestal 2 and brake pressing plate 12.The form of lever support 6 herein and the bump of placement brake block 13 are only attainable modes of the present invention, in other embodiments of the invention, can have other implementations.
In another embodiment of the present invention, lever support 6 has two bearing pin moving troughs be oppositely arranged and two tight fixed bolts, and the two ends of bearing pin 14 are placed in a bearing pin moving trough respectively, and each bearing pin moving trough has tight fixed bolt.The movement that bearing pin 14 can carry out along bearing pin 14 radial direction along bearing pin moving trough, tight fixed bolt is used for bearing pin 14 being fixed to the current residing position of bearing pin 14.
In other embodiments of the invention, change brake hydraulic in-line 1 into brake pressure in-line, promote piston with air pressure or other modes, still can realize object of the present invention.
Fig. 2 is the schematic diagram that the shown bearing pin 14 of locking braking device of Fig. 1 is positioned at diverse location.As shown in Figure 2, the difference that bearing pin 14 position can need according to user and changing, it can in primary importance 20, also can in the second place 21 or the 3rd position 22.Like this in different positions, the arm of force of lever is also different, achieves and zooms in or out locking torque, reaches the effect of anticipation.
It will be appreciated that, in other embodiments of the invention, if omit spherical joint 7, the first stepped stem is made to be fixedly connected on brake pressing plate 12 (such as being fixed by set screw 5), still can form an effective lever construction, it still can realize large brake torque with small-power input of consuming energy, and realizes the technique effect of reduction energy consumption of the present invention.
Below for the embodiment shown in Fig. 1, the using process of simple declaration locking braking device of the present invention.In the embodiment shown in fig. 1, low power hydraulic station (Fig. 1 is not shown) provides driving hydraulic oil, enter into bottom piston 15 through brake hydraulic in-line 1, overcome multiple cylindrically coiled spring 4 or the downward resistance of belleville spring, promote piston 15 and move up.While piston 15 moves up, brake pressing plate 12 will rotate around bearing pin 14, form leverage, make one end of brake pressing plate 12 produce downward displacement, compress brake block 13, thus brake.In the movement process of brake pressing plate 12, with the spherical joint 7 that contacts with each other of brake pressing plate 12 constantly self-adaptative adjustment to brake the attitude of pressing plate 12, make it can not interfere with piston 15 all the time, namely so-called deformation-compensated.When hydraulic oil off-load, piston 15, under the effect of cylindrically coiled spring 4 or belleville spring, moves downward, until get back to initial position, meanwhile, the pressing plate 12 that brakes rotates around bearing pin 14, originally the one end compressing brake block 13 is lifted, and loosen brake block 13, whole process completes.
So far, those skilled in the art will recognize that, although multiple exemplary embodiment of the present invention is illustrate and described herein detailed, but, without departing from the spirit and scope of the present invention, still can directly determine or derive other modification many or amendment of meeting the principle of the invention according to content disclosed by the invention.Therefore, scope of the present invention should be understood and regard as and cover all these other modification or amendments.
Claims (10)
1. a locking braking device, is characterized in that, comprising:
Brake fixed pedestal, have brake hydraulic in-line and piston cavity in it, described piston cavity is connected with described brake hydraulic in-line;
Piston, comprise piston crown and stepped piston rod, described piston crown is installed in described piston cavity, described stepped piston rod is fixedly connected with described piston crown, moving axially along described stepped piston rod in described piston cavity under the effect of the hydraulic oil of described piston in described brake hydraulic in-line;
Lever support, is fixedly connected on described brake fixed pedestal;
Brake pressing plate, is articulated with described lever support and is connected with described stepped piston rod, makes moving axially of described stepped piston rod drive described brake press plate rotary;
At least a slice brake block, brake block described in every sheet has the dog point be connected with for brake member, and is sandwiched in the friction side between described brake fixed pedestal and described brake pressing plate.
2. locking braking device according to claim 1, is characterized in that,
Described stepped piston rod comprises the first stepped stem, second stepped stem of dead in line, described first stepped stem is positioned at the tail end of described stepped piston rod, described second ladder shank diameter is greater than the diameter of described first stepped stem, is fixedly connected with described first stepped stem;
Described locking braking device also comprises spherical joint, and described first stepped stem, through described spherical joint, extends into described brake pressing plate, and is connected with described brake pressing plate;
Described spherical joint is sandwiched between described second stepped stem and described brake pressing plate, and the outer convex spherical of described spherical joint contacts with described brake pressing plate, and the contacting point of described brake pressing plate and described outer convex spherical is the interior concave spherical surface adapted.
3. locking braking device according to claim 2, is characterized in that,
Described brake pressing plate is provided with the first cylindrical cavity and second cylindrical cavity of dead in line, and the diameter of described first cylindrical cavity is less than the diameter of described second cylindrical cavity;
Described first stepped stem is through described first cylindrical cavity, and the nut check that is locked, in the annular bottom wall of described second cylindrical cavity, accompanies annular gasket between described locking nut and described annular bottom wall;
Described locking braking device also comprises cotter pin, and described cotter pin is through the nut groove of described locking nut and the tail hole of described first stepped stem.
4. locking braking device according to claim 3, is characterized in that,
Described stepped piston rod also comprises the 3rd stepped stem, the diameter of described 3rd stepped stem is greater than the diameter of described second stepped stem, the axis of described 3rd stepped stem and the dead in line of described second stepped stem, one end of described 3rd stepped stem is fixedly connected on described piston crown;
Described 3rd stepped stem is provided with at least one axially extended cylindrical hole along described stepped piston rod, and each cylindrical hole lays a spring, and described spring contacts with described brake fixed pedestal away from one end of corresponding described cylindrical hole.
5. locking braking device according to claim 4, is characterized in that,
Described spring is cylindrically coiled spring or belleville spring.
6. locking braking device according to claim 1, is characterized in that,
Described brake pressing plate by hinge in described lever support.
7. locking braking device according to claim 6, is characterized in that,
Described lever support comprises one piece of base plate and two pieces of risers, and described base plate has the first through hole passed for piston, and riser described in every sheet has the second through hole passed for described bearing pin, and described second through hole is provided with the Cock screw of the position limiting described bearing pin.
8. locking braking device according to claim 7, is characterized in that,
Described lever support is fixedly connected with brake fixed pedestal by set screw.
9. the locking braking device according to any one of claim 1-8, is characterized in that,
Described brake fixed pedestal has the bump extended in the direction of the bottom plane perpendicular to described brake fixed pedestal, and the friction side of described brake block is sandwiched between the described bump of described brake fixed pedestal and described brake pressing plate.
10. the locking braking device according to any one of claim 1-8, is characterized in that,
Piston crown side is provided with at least one annular seal groove, is provided with a seal ring in each described annular seal groove, and the inner circumference of each described seal ring and described piston cavity is sealed and matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510050284.XA CN104613104B (en) | 2015-01-30 | 2015-01-30 | One kind locking brake apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510050284.XA CN104613104B (en) | 2015-01-30 | 2015-01-30 | One kind locking brake apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104613104A true CN104613104A (en) | 2015-05-13 |
| CN104613104B CN104613104B (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510050284.XA Active CN104613104B (en) | 2015-01-30 | 2015-01-30 | One kind locking brake apparatus |
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| Country | Link |
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| CN (1) | CN104613104B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187464A (en) * | 2019-06-03 | 2019-08-30 | 北京科益虹源光电技术有限公司 | A kind of prism clamping fixture with safeguard structure of no pivoting friction |
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| CN204403235U (en) * | 2015-01-30 | 2015-06-17 | 烟台环球机床附件集团有限公司 | A kind of locking braking device |
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2015
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE4407293C1 (en) * | 1994-03-04 | 1995-10-05 | Knorr Bremse Systeme | Brake callipers for disc brakes of rail vehicle |
| CN2733090Y (en) * | 2004-08-27 | 2005-10-12 | 张顺德 | Brake |
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| JP2009083013A (en) * | 2007-09-28 | 2009-04-23 | Tsudakoma Corp | Clamping device for rotation indexing device for machine tool |
| CN102705401A (en) * | 2012-05-14 | 2012-10-03 | 中国重型机械研究院有限公司 | Brake |
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| CN110187464A (en) * | 2019-06-03 | 2019-08-30 | 北京科益虹源光电技术有限公司 | A kind of prism clamping fixture with safeguard structure of no pivoting friction |
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| CN104613104B (en) | 2017-05-31 |
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Denomination of invention: A locking braking device Effective date of registration: 20220225 Granted publication date: 20170531 Pledgee: Yantai Branch of Shandong Longkou Rural Commercial Bank Co.,Ltd. Pledgor: YANTAI UNIVERSAL MACHINE TOOL ACCESSORY GROUP CO.,LTD.|YANTAI UNIVERSAL MACHINE TOOL ACCESSORY GROUP CO.,LTD. Registration number: Y2022980001865 |
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