CN101915284B

CN101915284B - Cam turntable

Info

Publication number: CN101915284B
Application number: CN2010102543023A
Authority: CN
Inventors: 黄忠; 李向阳
Original assignee: CHENGDU ZHONGSHUN TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: Cheng Du Zhong Shun Science And Technology Development Co ltd
Priority date: 2010-08-16
Filing date: 2010-08-16
Publication date: 2012-07-04
Anticipated expiration: 2030-08-16
Also published as: CN101915284A

Abstract

The invention discloses a cam turntable. The cam turntable comprises a case (1), a drive device arranged on the case (1), a power output shaft (3) driven by the drive device and provided with a cam (2), and a control device arranged on the power output shaft (3) and used for transferring external impact loads. The cam turntable can bear greater impact loads and can effectively transfer the external impact loads to prevent all parts in the turntable from being damaged, particularly to avoid influencing the accuracy of the turbine. Moreover, the cam turntable also has the function of automatic gap elimination.

Description

A kind of cam turntable

Technical field

The present invention relates to a kind of cam turntable.

Background technique

At present, rotating disk is widely used on the huge revolving mechanical devices such as handling machinery, mining machinery, constructional engineering machinery, harbour machinery and sun tracker, in order to bear combined loads such as bigger axial load, radial load and tilting moment.The drive mechanism of existing rotating disk is mainly the turbine and worm structure, and promptly worm screw utilizes power that drive unit transmits to drive the turbine rotation with its engagement, and this turbine turns round the device that supports on this rotating disk through pto in the horizontal direction.But; When external force was bigger, the external shock load that this rotating disk bore (mostly this external shock load is harmful load) was just bigger, and these impulsive loads very easily cause the infringement of component such as the interior turbine and worm of rotating disk; Thereby cause the working life of whole rotating disk short partially, the antioverloading ability.

Summary of the invention

To above-mentioned deficiency, the present invention provides a kind of can carry big external shock load, and can the external shock load that these are harmful effectively shifts or subdue, and prevents the cam turntable that each parts suffers damage in the rotating disk.

Technical problem to be solved by this invention realizes through following technological scheme:

A kind of cam turntable, this cam turntable comprise shell, be arranged on drive unit on the shell, driven and had the pto of cam and be arranged on the control gear that on the said pto external impulsive load is shifted by said drive unit; Said control gear comprise the control motor that is arranged on the said shell, the control worm screw that is connected said control motor power output terminal, through flip sleeve be fitted on the said pto and with the control turbine and the rubbing device that contacts with said camming surface of said control worm meshing; Wherein, Said control turbine is arranged at said cam and drives between the turbine; And adopt the spacer that is sleeved on the said pto to separate between said control turbine and the driving turbine; And said control turbine is set in parallel on the said pto with the driving turbine; So that said driving turbine and control turbine are carried out spacing, prevent both relative movement, thereby control the transfer of external shock load better.

Said drive unit comprise drive motor, the driving worm screw that is connected said drive motor clutch end that is arranged on the said shell and be fixedly installed on the said pto and with the driving turbine of said worm meshing, its power transmission line is motor-driving worm screw-driving turbine-pto.

Said rubbing device comprises and contacts with said camming surface and be fixed in the friction piece on the said shell and be arranged on friction plate between said cam and the friction piece; This friction plate and said friction piece and cam are all fitted; Realize that being face between this friction plate and friction piece, friction plate and the cam contacts; Consume thereby better external shock load is converted into frictional force, realization is effectively shifted these external harmful impulsive loads or is subdued.

It is heart-shaped that said cam is, and the depression curved surface of said friction plate and heart-shaped cam fits, and the shape of this heart-shaped cam depression curved surface can specifically be set according to actual needs.

In order to improve bearing capacity, it is good that tapered roller bearing is set between said pto and the friction piece, certainly also other bearings as the case may be.

One end of said pto is positioned at said housing, and the other end stretches out said housing; And said housing is provided with end cap corresponding to an end of the pto that does not stretch out this housing, the gap that is produced during with the adjustment assembling, and this end cap passes through bolt on said housing; The other end is provided with Simmer ring between said pto and friction piece, this Simmer ring is sealed in said tapered roller bearing between said pto and the friction piece.

For each parts in when assembling can be to cam turntable carry out pretension and sealing, between said friction piece and the housing, be provided with the O RunddichtringO between said end cap and the housing.

Said friction piece on said shell, to these friction piece installation and removal, is convenient to maintain and replace with convenient through screw.

Owing to adopted said structure, beneficial effect of the present invention is following:

(1) cam turntable provided by the invention is provided with the control gear that external impulsive load is shifted; Promptly being converted into frictional force through this control gear external shock load that these are harmful shifts and cuts out; Thereby help protecting the subsequent drive device to be damaged because impulsive load is excessive; Particularly the precision of turbine is controlled in protection; Its Safety performance is high, and bearing capacity is big, so can be on huge revolving mechanical devices such as handling machinery, mining machinery, constructional engineering machinery, harbour machinery and sun tracker.

(2) and; Above-mentioned cam turntable also possesses automatic elimination gap function, promptly because the starting time of control turbine and speed have hysteresis quality for driving turbine, therefore controls turbine through acting on cam; This cam pushes friction plate to the friction piece direction; Thereby each parts in the cam turntable are adjusted elimination in when assembling or the gap that produces owing to the wearing and tearing of each parts in use for some time, and its compact structure uses very convenient.

(3) further be; Above-mentioned cam turntable adopts heart-shaped cam; And the depression curved surface of this heart-shaped cam and friction plate are fitted, and equal mode of contacting of employing face between cam and friction plate, friction plate and the friction piece maximizes the frictional contact surface between them simultaneously; Therefore can to greatest extent harmful external shock load be converted into frictional force and effectively shift or cut out; And how many next settings flexibly of the impulsive load that the depression curved surface of this heart-shaped cam can shift as required or consume, it is simple in structure, and is economic and practical.

Description of drawings

Fig. 1 is the plan view of embodiment of the invention cam rotating disk.

Fig. 2 is that the A-A of Fig. 1 is to sectional view.

Fig. 3 is the stereogram of cam turntable internal structure shown in Figure 1.

Structural representation when Fig. 4 is this cam turntable cam and rubbing device applying.

Among the above-mentioned figure, part 1 is a housing; Part 2 is a cam; Part 2-1 is the depression curved surface of cam; Part 3 is a pto; Part 4 is a drive motor; Part 5 is for driving worm screw; Part 6 is for driving turbine; Part 7 is the control motor; Part 8 is the control worm screw; Part 9 is a flip sleeve; Part 10 is the control turbine; Part 11 is a spacer; Part 12 is a friction piece; Part 13 is a friction plate; Part 14 is a tapered roller bearing; Part 15 is an end cap; Part 16 is a bolt; Part 17 is a Simmer ring; Part 18 is the O RunddichtringO; Part 19 is a screw.

Embodiment

In order to make the object of the invention, technological scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.

Extremely shown in Figure 4 like Fig. 1; A kind of cam turntable, this cam turntable comprise housing 1, be arranged on drive unit on the housing 1, driven and had the pto 3 of cam 2 and be arranged on the control gear that on the said pto 3 external impulsive load is shifted by said drive unit; Said drive unit comprises the drive motor 4 that is arranged on the said housing 1 (this drive motor 4 is permanent torque drive motor), be connected the driving worm screw 5 of said drive motor 4 clutch ends and be fixedly installed on the said pto 3 and with the driving turbine 6 of said driving worm screw 5 engagements; Said control gear comprise the control motor 7 that is arranged on the said housing 1, the control worm screw 8 that is connected said control motor 7 clutch ends, through flip sleeve 9 be fitted on the said pto 3 and with the control turbine 10 of said control worm screw 8 engagements with 2 rubbing devices that contact of said cam; Wherein, Said control turbine 10 is arranged at said cam 2 and drives between the turbine 6; And adopt the spacer 11 that is sleeved on the said pto 3 to separate between said control turbine 10 and the driving turbine 6, and said control turbine 10 is set in parallel on the said pto 3 with driving turbine 6; Said rubbing device comprises and contacts with 2 on said cam and be fixed in the friction piece 12 on the said housing 1 and be arranged on the friction plate 13 between said cam 2 and the friction piece 12 that this friction plate 13 is all fitted with cam 2 with said friction piece 12; It is heart-shaped that said cam 2 is, and said friction plate 13 fits with the depression curved surface 2-1 of heart-shaped cam 2; Be provided with tapered roller bearing 14 between said pto 3 and the friction piece 12; One end of said pto 3 is positioned at said housing 1, and the other end stretches out said housing 1; And said housing 1 is provided with end cap 15 corresponding to an end of the pto that does not stretch out this housing 13, and this end cap 15 is fixed on the said housing 1 through bolt 16; The other end is provided with Simmer ring 17 between said pto 3 and friction piece 12, this Simmer ring 17 is sealed in said tapered roller bearing 14 between said pto 3 and the friction piece 12; Between said friction piece 12 and the housing 1, be provided with O RunddichtringO 18 between said end cap 15 and the housing 1; Said friction piece 12 is fixed on the said housing 1 through screw 19.

The working principle of above-mentioned cam turntable is: start said drive motor 4 earlier; The back starts said control motor 7; And the rotating speed of said control motor 7 is set to be lower than the rotating speed about 10% of said drive motor 4; Said control motor 7 passed through said control worm screw 8 and controlled turbine 10 to drive said friction plate 13 rotations (10 circular movement that retrain friction plate 13 of control turbine do not retrain radially moving) this moment, and moved in the same way with said drive motor 4; Moment of torsion so that said drive motor 4 is produced further discharges, and stops said drive motor 4 after the of short duration time-delay; Because said cam 2 is a single piece with pto 3; And be slightly later to the startup of said drive motor 4 starting time of said control motor 7; It is poor with speed promptly to leave certain delay the starting time of two motors; So when external shock load was big, this impulsive load acted on said friction plate 13 through said cam 2, and is converted into the frictional force between said friction plate 13 and the friction piece 12; Thereby the external shock load that this part is harmful effectively shifts and subdues, and effectively the precision of protection control turbine 10 is immune; Shift and what of the impulsive load of subduing can be designed to control through the depression curved surface 2-1 to said cam 2 about needs; In above-mentioned working procedure; Said control turbine 10 is through acting on said cam 2; This cam 2 with said friction plate 13 to friction piece 12 directions extruding, thereby with each parts in the cam turntable when the assembling or in use for some time because the gap that the wearing and tearing of each parts produce elimination.

The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims

1. cam turntable is characterized in that: this cam turntable comprises housing (1), be arranged on drive unit on the said housing (1), driven and had the pto (3) of cam (2) and be arranged on the control gear that on the said pto (3) external impulsive load is shifted by said drive unit; Said control gear comprise the control motor (7) that is arranged on the said housing (1), the control worm screw (8) that is connected said control motor (7) clutch end, through flip sleeve (9) be fitted in that said pto (3) is gone up and with the control turbine (10) and the rubbing device that contacts with said cam (2) face of said control worm screw (8) engagement; Wherein, Said control turbine (10) is arranged at said cam (2) and drives between the turbine (6); And adopt the spacer (11) that is sleeved on the said pto (3) to separate between said control turbine (10) and the driving turbine (6), and said control turbine (10) is set in parallel on the said pto (3) with driving turbine (6).

2. cam turntable as claimed in claim 1 is characterized in that: said drive unit comprises the drive motor (4) that is arranged on the said housing (1), be connected the driving worm screw (5) of said drive motor (4) clutch end and be fixedly installed on that said pto (3) is gone up and with the driving turbine (6) of said driving worm screw (5) engagement.

3. according to claim 1 or claim 2 cam turntable; It is characterized in that: said rubbing device comprise contact with said cam (2) face and be fixed in the friction piece (12) on the said housing (1) and be arranged on said cam (2) and friction piece (12) between friction plate (13), this friction plate (13) is all fitted with said friction piece (12) and cam (2).

4. cam turntable as claimed in claim 3 is characterized in that: said cam (2) is heart-shaped, and said friction plate (13) fits with the depression curved surface (2-1) of heart-shaped cam (2).

5. cam turntable as claimed in claim 4 is characterized in that: be provided with tapered roller bearing (14) between said pto (3) and the friction piece (12).

6. cam turntable as claimed in claim 5 is characterized in that: an end of said pto (3) is positioned at said housing (1), and the other end stretches out said housing (1); And said housing (1) is provided with end cap (15) corresponding to an end of the pto that does not stretch out this housing (1) (3), and this end cap (15) is fixed on the said housing (1) through bolt (16); The other end is provided with Simmer ring (17) between said pto (3) and friction piece (12), this Simmer ring (17) is sealed in said tapered roller bearing (14) between said pto (3) and the friction piece (12).

7. cam turntable as claimed in claim 6 is characterized in that: between said friction piece (12) and the housing (1), be provided with O RunddichtringO (18) between said end cap (15) and the housing (1).

8. cam turntable as claimed in claim 7 is characterized in that: said friction piece (12) is fixed on the said housing (1) through screw (19).