CN206672808U - Involute shape power-assisted insert row mechanism - Google Patents
Involute shape power-assisted insert row mechanism Download PDFInfo
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- CN206672808U CN206672808U CN201720381116.3U CN201720381116U CN206672808U CN 206672808 U CN206672808 U CN 206672808U CN 201720381116 U CN201720381116 U CN 201720381116U CN 206672808 U CN206672808 U CN 206672808U
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- assisted
- involute shape
- shape power
- cam
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Abstract
It the utility model is related to a kind of involute shape power-assisted insert row mechanism slided for electrical appliance module in power-assisted casing for electric appliances, including involute shape power-assisted cam, pull bar and flat moving member, the cam end both sides of involute shape power-assisted cam have two symmetrical involute shape contour curved surfaces, pull bar is fixed as an overall structure with involute shape power-assisted cam, it is hinged on the slideway of casing for electric appliances, flat moving member is fixed on electrical appliance module, it is wide that groove type is provided with flat moving member, the wide both sides of groove type have two flat pressure-bearing surfaces, the cam end of involute shape power-assisted cam is placed in the groove type exterior feature, two involute shape contour curved surfaces are in contact with the flat pressure-bearing surface in flat moving member groove type exterior feature respectively.Pull bar drives involute shape power-assisted cam rotation, stirs flat moving member and drives electrical appliance module to slide.
Description
Technical field
A kind of involute shape power-assisted insert row mechanism is the utility model is related to, suitable for mining Quick-repair explosion-proof vacuum
In the electric equipment such as feeding switch and mining Quick-repair magnetic starter.
Background technology
Vacuum contactor module in mining Quick-repair flame-proof type vacuum feed switch, and Quick-repair magnetic force
Reversing switch module in starter --- together simply referred to as electrical appliance module --- has three-phase inlet wire and three-phase outlet, using slotting
Connect formula structure and be connected with the socket being fixed on switch or starter housing.I.e. as shown in figure 1,8 groups of the plate of electrical appliance module six
Into insert row and casing for electric appliances 10 on the grafting simultaneously of six sockets 9.If one plate 8 of any of which and the grafting of socket 9 are not
Tightly, can all electrical heating be caused to break down.
In order to ensure the grafting compactness of plate and socket, an extension spring is set usually in socket, when plate grafting
When in socket, socket compresses plate by the contraction elasticity of extension spring.
Thus need to use larger power to be pushed into and pull out socket by single plate, and ensure that plate has certain row
Journey.Therefore result in when the grafting simultaneously of six sockets on the insert row and casing for electric appliances of six plates composition is pulled open, it is necessary to push away
Power or pulling force are very big, and it is difficult to complete to be seated simultaneously to fully rely on manpower.
Therefore, except on electrical appliance module install roller be placed on the slideway in casing for electric appliances, make electrical appliance module by means of
Roller is slided on slideway outside laborsaving, also needs to set servomechanism.Stirred and be connected on electrical appliance module by using servomechanism
Flat moving member, by electrical appliance module be pushed into or pull out casing for electric appliances, complete insert row pulled open with grafting while socket.
Existing booster engine in mining Quick-repair flame-proof type vacuum feed switch and Quick-repair magnetic starter
Structure is the cylindrical servomechanism shown in A in Fig. 2.The servomechanism is stirred using cylindrical power-assisted cam 4 and is connected in electrical equipment mould
Flat moving member on block drives electrical appliance module to move, and push-and-pull process is relatively elaborate.
In Fig. 2 B and C give cylindrical servomechanism it is in running order under mechanical analysis figure.Wherein,F 1' it is circle
Push-pull effort caused by cylindricality servomechanism,F 2' the power applied for hand to pull bar；B is the arm of force of hand applying power；A is caused
The arm of force of push-pull effort；βFor the angle of spread of cylindrical servomechanism pull bar,β maxFor the maximum of cylindrical servomechanism pull bar
The angle of spread.
According to B in Fig. 2 and C it is recognised that the force increasing ratio of cylindrical servomechanism is：
。
It is possible thereby to learn, the cylindrical flat moving member of power-assisted cam driven is stirred in the pull bar of cylindrical servomechanism
In mobile process, its force increasing ratio is continually changing with the change of the cylindrical servomechanism pull bar angle of spread.
According to above-mentioned formula, it is seen that, what time insufficient existing cylindrical servomechanism has.
1st, because force increasing ratio is constantly changing so that the push-pull effort applied on hand is also constantly changing, and causes push-and-pull process
It is not steady enough.
2nd, B and C can be seen that during push-and-pull from Fig. 2, the contact point of cylindrical power-assisted cam and flat moving member
Also occurring to change.The angle of spread with cylindrical servomechanism pull bar constantly increases, cylindrical power-assisted cam with it is flat
The contact point of moving member can move from the innermost end of groove to groove outer end, produces side-friction, makes contact surface abrasion.
Therefore, the flat moving member on electrical appliance module is stirred using cylindrical servomechanism, because contact point is changing, is increased
Power changes therewith than also, and thrust pulling force constantly alternately changes so that not only push-and-pull process causes high effort for, and the fortune of electrical appliance module
Row is also unstable.
The content of the invention
The purpose of this utility model is exactly to overcome the shortcomings of existing servomechanism, there is provided a kind of simple in construction, installation operation
It is convenient, it is laborsaving and electrical appliance module can be made to operate steadily, avoid the involute shape power-assisted insert row mechanism of side-friction.
Involute shape power-assisted insert row mechanism described in the utility model is that the electrical appliance module in power-assisted casing for electric appliances is slided
Dynamic.Same as the prior art, the electrical appliance module is placed on the slideway in casing for electric appliances by the roller installed thereon, can
Laborsaving slip before and after along slideway.
Unlike the prior art, involute shape power-assisted insert row mechanism described in the utility model includes：
One involute shape power-assisted cam, there are two in the cam end both sides of the involute shape power-assisted cam symmetrically
Involute shape contour curved surface；
One pull bar, the pull bar are fixed as an overall structure with involute shape power-assisted cam, are hinged on the electricity
On the slideway of device housing；
One flat moving member, the flat moving member are fixed on the electrical appliance module, on the flat moving member
Provided with a groove type exterior feature, the wide both sides of the groove type have two flat pressure-bearing surfaces, the involute shape power-assisted cam
Cam end is placed in the groove type exterior feature, two involute shape contour curved surfaces respectively with it is flat in the flat moving member groove type exterior feature
Bottom pressure-bearing surface is in contact.
Wherein, most preferably, the utility model is designed the center line of the involute shape power-assisted cam is in pull bar
Angle αmax/ 2 are fixedly connected, the αmaxFor the maximum angle of spread of pull bar.
Usually, helped as long as installing the above-mentioned involute shape of a set of the utility model on any one side slideway of casing for electric appliances
Power insert row mechanism, it is possible to reach the purpose for comparing that effortlessly controlling electric device module steadily moves.But according to actual use need
Will, such as the larger electric switch of volume, or in order to ensure that the level that electrical appliance module slides along slideway is consistent, with more preferable
Ground ensures all plates and socket energy Complete Synchronization grafting or pulled open, it is also contemplated that the left and right sides cunning in the casing for electric appliances
A set of involute shape power-assisted insert row mechanism is symmetrically installed respectively on road, operated by synchronously stirring pull bar.
The normal at any point is all tangent with its basic circle on involute, involute shape power-assisted socket making machine of the present utility model
Structure is to be designed according to this principle.
When stirring pull bar rotation, with flat in the change of the pull bar angle of spread, with flat moving member groove type exterior feature
The contact point on involute shape contour curved surface that bottom pressure-bearing surface is in contact is also continually changing.But no matter involute shape is wide
Where is contact point change on curved surface, the side for the involute shape power-assisted cam action forces that the contact point is subject on flat pressure-bearing surface
To basic circle is but cut in all the time, i.e., along the direction parallel to slideway, perpendicular to flat pressure-bearing surface, so on flat pressure-bearing surface
Stress action spot immobilizes.Then, because the stress action spot on flat pressure-bearing surface immobilizes, and active force is vertical all the time
In flat pressure-bearing surface, so the active force perpendicular to slideway direction is zero, i.e., caused frictional force is also on flat pressure-bearing surface
Zero, avoid side-friction.
Simultaneously as the active force of involute shape contour curved surface and flat pressure-bearing surface is all the time perpendicular to flat pressure-bearing surface, this reality
Force increasing ratio with new involute shape power-assisted insert row mechanism is always definite value, unrelated with the pull bar angle of spread.Therefore, with it is existing
Under the same installation dimension of cylindrical servomechanism, same travel condition, involute shape power-assisted socket making machine of the present utility model
The permanent force increasing ratio for being more than or equal to cylindrical servomechanism of the force increasing ratio of structure, it is more more laborsaving than existing servomechanism.And then due to this
The force increasing ratio of utility model involute shape power-assisted insert row mechanism is constant, and the force increasing ratio of cylindrical servomechanism is change
, so involute shape power-assisted insert row mechanism of the present utility model is more steady during push-and-pull.
Involute shape power-assisted insert row mechanism of the present utility model is applied to Quick-repair vacuum feed switch and quick inspection
Repair in the electric equipments such as formula magnetic starter.
Brief description of the drawings
Fig. 1 is the structural representation of socket grafting on the insert row and casing for electric appliances of electrical appliance module in electric equipment.
Fig. 2 is the structure and course of work schematic diagram of existing cylindrical servomechanism.
Wherein：A is state when pull bar just starts to pull out, and B is free position, shape when C is completely pulled out for pull bar
State.
Fig. 3 is the mounting structure schematic diagram of the utility model involute shape power-assisted insert row mechanism.
Fig. 4 is the structure and course of work schematic diagram of the utility model involute shape power-assisted insert row mechanism.
Wherein：A is state when pull bar just starts to pull out, and B is free position, shape when C is completely pulled out for pull bar
State.
In figure：1-pull bar, 2-involute shape power-assisted cam, 3-flat moving member, 4-cylindrical power-assisted cam,
5-electrical appliance module, 6-roller, 7-slideway, 8-plate, 9-socket, 10-casing for electric appliances.
Embodiment
Specific embodiment of the present utility model is further described with reference to the accompanying drawings and examples.Following examples
It is only used for clearly illustrating the technical solution of the utility model, and protection model of the present utility model can not be limited with this
Enclose.
As shown in A in Fig. 4, involute shape power-assisted insert row mechanism is by 1, involute shape power-assisted cam 2 of a pull bar
Formed with a flat moving member 3.The pull bar 1 is integral structure, involute shape power-assisted with involute shape power-assisted cam 2
The center line of cam 2 makes an angle alpha with pull bar 1max/ 2 are fixedly connected.The involute shape power-assisted cam 2 has two symmetrically
Involute shape contour curved surface I and II.The flat moving member 3 has a groove type exterior feature, and the wide both sides of the groove type are two
Flat pressure-bearing surface.The cam end of the involute shape power-assisted cam 2 is placed in the groove type exterior feature, two involute shape contour curved surfaces
I and II is in contact with two flat pressure-bearing surfaces in the groove type exterior feature respectively.
Fig. 3 gives the specific mounting structure schematic diagram of involute shape power-assisted insert row mechanism.Pull bar 1 helps with involute shape
Power cam 2 is connected through on the point articulated slideway 7 in casing for electric appliances 10, and flat moving member 3 is fixedly connected on electrical appliance module 5
On, electrical appliance module 5 is placed on the slideway 7 in casing for electric appliances 10 by the roller 6 installed thereon.
Pull bar 1 is stirred with hand, pull bar 1 drives involute shape power-assisted cam 2 around the be hinged center being fixed on slideway 7
Rotate, involute shape power-assisted cam 2 stirs flat moving member 3 again, drives and passes through rolling with the affixed electrical appliance module 5 of flat moving member
Wheel 6 moves along a straight line along slideway 7, realizes the propulsion of electrical appliance module 5 or pulls out motion, so that being arranged on the front end of electrical appliance module 5
By the grafting simultaneously of the insert row that six plates 8 form and six sockets 9 on casing for electric appliances 10 or pull open.
As shown in figure 3, this involute power-assisted insert row mechanism respectively installed with right side in the left side of electrical appliance module 5 it is a set of, symmetrically
Use.
Involute shape power-assisted insert row mechanism of the present utility model is applied to mining Quick-repair explosion-proof vacuum feed and opened
In pass and mining Quick-repair magnetic starter.
Mechanical analysis figure under the involute shape power-assisted insert row mechanism arbitrary operational state provided according to B in Fig. 4, can be with
The force increasing ratio for deriving involute shape power-assisted insert row mechanism is：
。
In formula：F 1For push-pull effort caused by involute shape power-assisted insert row mechanism,F 2The power applied for hand to pull bar；B is hand
The arm of force of applying power；R is the base radius of involute.
From above-mentioned formula as can be seen that the force increasing ratio of involute shape power-assisted insert row mechanism is constant.
This is due to that the normal of any point on involute is all tangent with its basic circle, and involute shape power-assisted insert row mechanism passes through
During the rotation of involute shape power-assisted cam 2 promotes flat moving member 3 with pull-out, flat moving member 3 is by involute
The direction of the active force of shape power-assisted cam 2 is cut in basic circle all the time, perpendicular to the pressure-bearing surface of flat moving member.
Therefore, involute shape power-assisted cam 2 is always zero parallel to the active force of the flat pressure-bearing surface of moving member 3, that is,
It is zero that involute shape power-assisted cam 2, which rotates caused frictional force, and stress action spot immobilizes, so as to reduce and flat shifting
The side-friction of moving part.
And then because the force increasing ratio of power-assisted insert row mechanism is definite value, the push-and-pull process for allowing for pull bar is more steady.
And as described in the background art, as shown in Figure 2, its force increasing ratio is existing cylindrical servomechanism：
。
In formula：F 1' it is push-pull effort caused by cylindrical servomechanism,F 2' the power applied for hand to pull bar；B applies for hand
The arm of force of power；A is the arm of force of caused push-pull effort；βFor the angle of spread of cylindrical servomechanism pull bar.
When Fig. 2 and Fig. 4 have identical mounting condition, then have：a=r/cosβ max, whereinβ maxFor cylindrical booster engine
The maximum angle of spread of structure pull bar.
Then：
。
Force increasing ratio is changed with the change of the pull bar angle of spread.
Meanwhile because：
。
It can be seen that：
。
That is, the permanent reinforcement for being more than or equal to cylindrical servomechanism of the force increasing ratio of involute shape power-assisted insert row mechanism
Than.
Specifically, only when pull bar be in just be completely pulled out state when, involute shape power-assisted insert row mechanism with
The force increasing ratio of cylindrical servomechanism is equal；And pull bar is when being in other any positions, involute shape power-assisted socket making machine
The force increasing ratio of structure is both greater than the force increasing ratio of cylindrical servomechanism.
Therefore, involute shape power-assisted insert row mechanism of the present utility model is more more laborsaving than existing cylindrical servomechanism.
Meanwhile the force increasing ratio of involute shape power-assisted insert row mechanism is constant, the force increasing ratio change of cylindrical servomechanism, so
Involute shape power-assisted insert row mechanism of the present utility model is more steady during push-and-pull.
It is wide bent by the involute shape of involute heart cam all the time to ensure pull bar during push-in and pull-out
Face promotes flat moving member, and design makes the center line of involute heart cam be made an angle alpha with pull barmax/ 2 are fixedly connected.Involute
The angle of the starting point of two involutes on shape cam does not limit, to meet that intensity requirement is advisable.When pull bar is in complete
During closure state, cam goes to innermost end, it is possible thereby to make the involute of cam and the big footpath of cam.
Involute shape power-assisted insert row mechanism of the present utility model is can be seen that through above-mentioned mechanical analysis to help with existing cylinder
Force mechanisms have more laborsaving, steady and are avoided that the excellent of side-friction under same installation dimension, same travel condition
Point.
Claims (3)
1. a kind of involute shape power-assisted insert row mechanism, slided for the electrical appliance module in power-assisted casing for electric appliances, the electrical appliance module
Be placed in by the roller installed thereon on the slideway in casing for electric appliances, along slideway before and after laborsaving slip；It is characterized in that：
Described involute shape power-assisted insert row mechanism includes：
One involute shape power-assisted cam, there are two in the cam end both sides of the involute shape power-assisted cam and symmetrically gradually open
Linear contour curved surface；
One pull bar, the pull bar are fixed as an overall structure with involute shape power-assisted cam, are hinged on the electrical appliance shell
On the slideway of body；
One flat moving member, the flat moving member are fixed on the electrical appliance module, are provided with the flat moving member
One groove type exterior feature, the wide both sides of the groove type have two flat pressure-bearing surfaces, the cam of the involute shape power-assisted cam
End is placed in the groove type exterior feature, and two involute shape contour curved surfaces are held with flat in the flat moving member groove type exterior feature respectively
Pressure surface is in contact.
2. involute shape power-assisted insert row mechanism according to claim 1, it is characterized in that the involute shape power-assisted cam
Center line makes an angle alpha with pull barmax/ 2 are fixedly connected, the αmaxFor the maximum angle of spread of pull bar.
3. involute shape power-assisted insert row mechanism according to claim 1, it is characterized in that the left and right two in the casing for electric appliances
Side is separately installed with a set of involute shape power-assisted insert row mechanism, symmetrical to use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720381116.3U CN206672808U (en) | 2017-04-12 | 2017-04-12 | Involute shape power-assisted insert row mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720381116.3U CN206672808U (en) | 2017-04-12 | 2017-04-12 | Involute shape power-assisted insert row mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206672808U true CN206672808U (en) | 2017-11-24 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720381116.3U Withdrawn - After Issue CN206672808U (en) | 2017-04-12 | 2017-04-12 | Involute shape power-assisted insert row mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898506A (en) * | 2017-04-12 | 2017-06-27 | 山西济达变压器有限公司 | A kind of involute shape power-assisted insert row mechanism |
-
2017
- 2017-04-12 CN CN201720381116.3U patent/CN206672808U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898506A (en) * | 2017-04-12 | 2017-06-27 | 山西济达变压器有限公司 | A kind of involute shape power-assisted insert row mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171124 Effective date of abandoning: 20190219 |