CN208409913U - Drum brake formula mechanical joint - Google Patents
Drum brake formula mechanical joint Download PDFInfo
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- CN208409913U CN208409913U CN201820948429.7U CN201820948429U CN208409913U CN 208409913 U CN208409913 U CN 208409913U CN 201820948429 U CN201820948429 U CN 201820948429U CN 208409913 U CN208409913 U CN 208409913U
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Abstract
A kind of drum brake formula mechanical joint, is related to mechanical arm technical field, and technical problem that operation energy consumption high big the solution is to the existing organization volume for being able to achieve electrodeless brake.The mechanical joint includes braking mechanism, the first mechanical podomere, the second mechanical podomere, and main motor, the shaft of main motor passes through the mechanical podomere of transmission parts connection second, the braking mechanism includes the brake motor being mounted on the first mechanical podomere, and the brake hoop of circular ring shape, the shaft of main motor pass through the inner ring of brake hoop；The brake hoop is made of two arc-shaped brake-shoes, the upper end of two brake-shoes is mutually pivotally connected by the pivot that brakes, it is fixed with a brake drive disk in the shaft of the brake motor, two execution bars for driving two brake-shoes to pivot are fixed on the drive disk that brakes.Mechanical joint provided by the utility model can also start brake, it can be achieved that electrodeless brake in the state that motor does not come to a complete stop.
Description
Technical field
The utility model relates to mechanical arm technologies, more particularly to a kind of technology of drum brake formula mechanical joint.
Background technique
The mechanical arm of industrial robot be all realized by the cooperation of motor and braking mechanism it is dynamic, stop movement, it is existing
The mechanical arm motor of industrial robot mostly uses electromagnetic absorption joint type braking mechanism or electromagnetism thimble-type braking mechanism.
As shown in Fig. 2, brake disc 22 is fixed on main motor 21 in the electromagnetic absorption joint type braking mechanism of existing machinery arm motor
Shaft on, braking platen 23 spring 24 elastic force effect under tightly suppress brake disc 22 realize brake, electromagnetic coil 25 be powered
The elastic force of spring can be overcome to pick up braking platen 23 afterwards, so that braking platen 23 is separated with brake disc, to discharge brake.This
Electrodeless brake may be implemented in kind electromagnetic absorption joint type braking mechanism, can also start brake in the state that motor does not come to a complete stop, still
Gap between the structural requirement braking platen and brake disc must be smaller, in case electromagnetic attraction can not overcome spring force, this increasing
Difficulty of processing is added；And in order to increase brake torque, need to increase spring pressure, spring pressure is bigger, to electromagnetic coil
Magnetic force requires higher, and the power of electromagnetic coil will be promoted, and the thickness of steel braking platen will also increase to promote the suction-combining force, because
The volume and weight of this mechanism all can be larger.And electromagnetic coil is needed persistently to be powered to maintain to pick up braking when motor operation
Platen, operation energy consumption are also higher.
As shown in figure 3, brake disc 32 is fixed on main motor 31 in the electromagnetism thimble-type braking mechanism of existing machinery arm motor
Shaft on, the thimble 34 that is driven by electromagnet 33 protrudes into the hollow-out part of brake disc after shutting down power-off, is limited using thimble 3
The rotation of brake disc 32 processed, driving thimble 34 is extracted from brake disc hollow-out parts after electromagnet 33 is powered, to realize releasing for brake
It puts.This electromagnetism thimble-type braking mechanism can complete the extraction of thimble using low-power electromagnetic iron, and structure is simply small in size,
But need to be arranged the hollow out of large area on brake disc, and after the hollow-out parts of thimble insertion brake disc, brake disc can also be opposite
Certain angle is moved within the scope of hollow out in thimble, thus thimble is stepping to the limit of brake disc rather than electrodeless, simultaneously
Joint of mechanical arm can be made to generate static diastema.And main motor, in parking brake state, thimble is rigid to the stop of brake disc
Property, thimble can bear brake torque, higher to the intensity requirement of thimble；When discharging brake, sometimes due to thimble and brake
The frictional force at vehicle dish hollow-out parts edge is larger, thimble can not be driven to extract brake disc so as to cause electromagnet, need to control main electricity
Machine is turned over after an angle separates thimble with brake disc hollow-out parts edge and could be extracted, and needs matching for electric machine control system
It closes.In addition, since the hollow-out parts for needing thimble to protrude into brake disc carry out braking motor, it is therefore desirable to can just be released after main motor comes to a complete stop
Caving needle is caught in, and needs electromagnet to be persistently powered to maintain extraction state when main motor operation, is needed to generate one and is continued
Additional electrical energy loss.
Utility model content
For above-mentioned defect existing in the prior art, the technical problem to be solved by the utility model is to provide one kind can
It realizes electrodeless brake, brake can also be started in the state that motor does not come to a complete stop, and small in size, the low drum brake formula of operation energy consumption
Mechanical joint.
In order to solve the above-mentioned technical problem, a kind of drum brake formula mechanical joint provided by the utility model, including main motor,
Braking mechanism, the first mechanical podomere, the second mechanical podomere, the main motor are mounted on the first mechanical podomere, and main motor turns
Axis passes through the mechanical podomere of transmission parts connection second, it is characterised in that: the braking mechanism includes brake motor and circular ring shape
Brake hoop；
The brake motor is mounted on the first mechanical podomere, and the shaft of main motor passes through the inner ring of brake hoop；
Described first mechanical podomere is equipped with a brake pivot, and the brake hoop is made of two arc-shaped brake-shoes,
The upper end of two brake-shoes is mutually pivotally connected by the pivot that brakes, and two brake-shoes opposite can be switched to and hold turning for main motor tightly
Axis, and two brake-shoes can be switched to backwards and separate with the shaft of main motor, and the lower end of two brake-shoes respectively offers one
Brake drive hole；
It is fixed with a brake drive disk in the shaft of the brake motor, is fixed on the drive disk that brakes for driving two
Two execution bars that brake-shoe pivots, two execution bars are symmetrically laid with respect to the rotating shaft core of brake motor, and two execution
Bar is inserted into respectively in the brake drive hole of two brake-shoe lower ends with gap fiting mode.
Further, the main motor is external rotor electric machine.
Drum brake formula mechanical joint provided by the utility model realizes system by the way of brake-shoe locking main motor shaft
It moves, it can be achieved that electrodeless brake, can also start brake, and brake-shoe locking main motor shaft in the state that motor does not come to a complete stop
Afterwards without any rotation diastema, and structure is simple, small in size, no matter in the case where implementing braking state and release braking state, not
It needs to carry out continued power to brake motor, brake can be realized and maintain and brake to discharge, operation energy consumption is relatively low.In addition, by
The shaft of frictional force locking main motor after being clamped using brake-shoe, is not rigidly connected, even if the shaft of main motor is not
Start brake in the case where stopping operating completely, brake-shoe can only have skidded without impact acceleration, reduce to electricity
The requirement of machine control system, same release process do not need electric machine control system cooperation yet.Pass through the torsion control to brake motor
Adjustable brake-shoe locking dynamics is made, to adjust brake torque.The characteristic can also provide overload for motor transmission mechanism
Protection can pass to one torque of main motor, when torque is more than when the mechanical joint for locking state of shutting down meets with artificial hit
When brake locking torque, the shaft of main motor can skid, and mechanical joint can be rotated in the case where artificially accidentally touching, release electricity
Machine transmission mechanism stress.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the drum brake formula mechanical joint of the utility model embodiment；
Fig. 2 is the main view of the braking mechanism in the drum brake formula mechanical joint of the utility model embodiment；
Fig. 3 is the left view of the braking mechanism in the drum brake formula mechanical joint of the utility model embodiment；
Fig. 4 is the structural schematic diagram of the electromagnetic absorption joint type braking mechanism of existing machinery arm motor；
Fig. 5 is the structural schematic diagram of the electromagnetism thimble-type braking mechanism of existing machinery arm motor.
Specific embodiment
The embodiments of the present invention are described in further detail below in conjunction with Detailed description of the invention, but the present embodiment and are not had to
In limitation the utility model, all similar structures and its similar variation using the utility model should all be included in the utility model
Protection scope, the pause mark in the utility model indicates the relationship of sum.
As shown in Figure 1-Figure 3, a kind of drum brake formula mechanical joint provided by the utility model embodiment, including main motor 3,
Braking mechanism, the first mechanical podomere 2 of mechanical podomere 1, second, the main motor 3 are mounted on the first mechanical podomere 1, main motor 3
Shaft pass through the mechanical podomere 2 of transmission parts connection second, it is characterised in that: the braking mechanism includes brake motor 4, and circle
The brake hoop of annular；
The brake motor 4 is mounted on the first mechanical podomere, and the shaft of main motor 3 passes through the inner ring of brake hoop；
Described first mechanical podomere is equipped with a brake pivot 8, and the brake hoop is by two arc-shaped 5 groups of brake-shoe
At the upper end of two brake-shoes 5 is mutually pivotally connected by brake pivot 8, and two 5 energy opposite directions of brake-shoe are switched to and hold main electricity tightly
The shaft of machine 3, and two brake-shoes 5 can be switched to backwards and separate with the shaft of main motor 3, and the lower end of two brake-shoes 5 is each
Offer a brake drive hole；
It is fixed with a brake drive disk 6 in the shaft of the brake motor 4, is fixed on the drive disk 6 that brakes for driving
Two execution bars 7 that two brake-shoes 5 pivot, two execution bars 7 are symmetrically laid with respect to the rotating shaft core of brake motor 4, and
Two execution bars 7 are inserted into respectively in the brake drive hole of two 5 lower ends of brake-shoe with gap fiting mode.
In the utility model embodiment, the main motor 3 is external rotor electric machine.
The working principle of the utility model embodiment is as follows:
Under regular situation, two brake-shoes 5 of brake hoop are switched to be separated with the shaft of main motor 3, at this time main motor 3
Shaft can be rotated freely；The second mechanical podomere 2 can be driven to rotate relative to the first mechanical podomere 1 by the shaft of main motor 3 at this time,
When the second mechanical podomere 1 of mechanical podomere 2 opposite first turns to required angle, 4 driving brake drive disk 6 of brake motor is rotated forward
Certain angle, and then the shaft for holding main motor 3 tightly is switched to by two drivings of execution bars 7, two 5 opposite directions of brake-shoe, at this time
The shaft of main motor 3 is locked by two brake-shoes 5, so that the second mechanical podomere 2 is locked in current angular, needs to drive again
When second mechanical podomere 2 is rotated relative to the first mechanical podomere 1,4 driving brake drive disk 6 of brake motor inverts certain angle,
And then drive two brake-shoes 5 to be switched to backwards by two execution bars 7 and separated with the shaft of main motor 3, thus by main motor 3
Shaft release, make it freely to rotate.
Claims (2)
1. a kind of drum brake formula mechanical joint, including main motor, braking mechanism, the first mechanical podomere, the second mechanical podomere, the master
Motor is mounted on the first mechanical podomere, and the shaft of main motor passes through the mechanical podomere of transmission parts connection second, it is characterised in that:
The braking mechanism includes the brake hoop of brake motor and circular ring shape；
The brake motor is mounted on the first mechanical podomere, and the shaft of main motor passes through the inner ring of brake hoop；
Described first mechanical podomere is equipped with a brake pivot, and the brake hoop is made of two arc-shaped brake-shoes, and two
The upper end of brake-shoe is mutually pivotally connected by the pivot that brakes, and two brake-shoes opposite can be switched to the shaft for holding main motor tightly,
And two brake-shoes can be switched to backwards to be separated with the shaft of main motor, and the lower end of two brake-shoes respectively offers a brake
Drive hole；
It is fixed with a brake drive disk in the shaft of the brake motor, is fixed on the drive disk that brakes for driving two brakings
Two execution bars that hoof pivots, two execution bars symmetrically lay with respect to the rotating shaft core of brake motor, and two execution bars with
Gap fiting mode is inserted into respectively in the brake drive hole of two brake-shoe lower ends.
2. drum brake formula mechanical joint according to claim 1, it is characterised in that: the main motor is external rotor electric machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820948429.7U CN208409913U (en) | 2018-06-20 | 2018-06-20 | Drum brake formula mechanical joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820948429.7U CN208409913U (en) | 2018-06-20 | 2018-06-20 | Drum brake formula mechanical joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208409913U true CN208409913U (en) | 2019-01-22 |
Family
ID=65109615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820948429.7U Active CN208409913U (en) | 2018-06-20 | 2018-06-20 | Drum brake formula mechanical joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208409913U (en) |
-
2018
- 2018-06-20 CN CN201820948429.7U patent/CN208409913U/en active Active
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