CN210003704U

CN210003704U - single-point clutch

Info

Publication number: CN210003704U
Application number: CN201920426666.1U
Authority: CN
Inventors: 林友国; 林国强
Original assignee: Zhejiang Olite Technology Co Ltd
Current assignee: Guowang Technology Zhejiang Co ltd
Priority date: 2019-03-30
Filing date: 2019-03-30
Publication date: 2020-01-31
Anticipated expiration: 2029-03-30

Abstract

The utility model provides an kind of single-point clutch, this single-point clutch is jaw clutch, including drive fluted disc (2) and driving fluted disc (1), drive fluted disc (2) are through key and pivot (5) move the hookup, drive fluted disc (2) have set gradually piston body (3) and cylinder body (4) back to the side of driving fluted disc (1), piston body (3) through the annular of mutual gomphosis and annular convex structure and cylinder body (4) slip hookup, be formed with the ring chamber between the terminal surface of annular convex and the annular, air inlet (41) with the ring chamber intercommunication are seted up on the outer peripheral face of cylinder body (4), cylinder body (4) and pivot (5) are through deep groove ball bearing (71) hookup, piston body (3) and drive fluted disc (2) are through second deep groove ball bearing (72) hookup, drive fluted disc (2) are provided with reset spring (8) to the side of driving fluted disc (1) relatively, adopt the utility model provides a single-point clutch helps making the operation precision of machine keep stable for a long time.

Description

single-point clutch

Technical Field

The utility model relates to a clutch technical field especially relates to kinds of single-point clutches.

Background

The existing single-point clutch generally adopts an electromagnetic control mode, but on occasions with high use frequency, the electromagnetic effect is often obviously weakened after multiple uses, which causes the running precision of a machine to be reduced, and finally influences the normal operation of production, so how to improve the stability of the single-point clutch to improve the running precision of the machine becomes a technical problem to be solved urgently by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an kind single point clutches, adopt this single point clutch to help making the operation precision of machine keep stable for a long time.

In order to achieve the above object, the utility model provides a following technical scheme:

single-point clutches, wherein each single-point clutch is a jaw clutch and comprises a driving fluted disc and a transmission fluted disc, the driving fluted disc is movably connected with a rotating shaft through a key, a piston body and an air cylinder body are sequentially arranged on the side of the driving fluted disc, which is back to side of the transmission fluted disc, the piston body is in sliding connection with the air cylinder body through a mutually embedded annular groove and an annular convex structure, an annular cavity is formed between the end surface of the annular convex and the annular groove, and an air inlet communicated with the annular cavity is formed on the outer peripheral surface of the air cylinder body;

the cylinder body is connected with the rotating shaft through an th deep groove ball bearing, and the piston body is connected with the driving fluted disc through a second deep groove ball bearing;

the side of the driving fluted disc, which is opposite to the driving fluted disc, is provided with a return spring, two ends of the return spring are respectively abutted against the driving fluted disc and the baffle, and the baffle is statically connected with the rotating shaft.

Preferably, in the single-point clutch, an O-ring is provided on a sliding surface between the annular groove and the annular projection.

Preferably, in the above one-point clutch, the annular projection is a structure on the cylinder block.

Preferably, in the above single-point clutch, an inner ring of the second deep groove ball bearing is mounted on the piston body.

Preferably, in the above one-point clutch, an outer surface of the cylinder block is provided with a stopper groove on an edge where an outer end surface and an outer peripheral surface of the cylinder block intersect.

Preferably, in the single-point clutch, the cylinder block and the piston body are both provided with a positioning hole extending along the axial direction of the rotating shaft, and a positioning pin is inserted into the positioning hole.

Preferably, in the above single-point clutch, the positioning pin is located at 180 ° from the air inlet in a circumferential direction of the rotating shaft, and the stopper groove is located at 90 ° from the air inlet.

Preferably, in the single-point clutch, a pin hole extending in a radial direction of the rotating shaft is formed in an outer peripheral surface of the cylinder block, the pin hole is communicated with the positioning hole in the cylinder block, and an elastic cylindrical pin in the pin hole passes through a through hole in the positioning pin.

Preferably, in the above single-point clutch, the rotating shaft is a cylindrical shaft with a key slot on an inner wall.

The working principle of the single-point clutch provided by the utility model is that pressure gas is introduced into the annular cavity from the air inlet on the cylinder body to push the piston body, the second deep groove ball bearing and the driving fluted disc, and the driving fluted disc is jointed with the driving fluted disc after the reset spring is compressed; and the reset spring extends to push the driving fluted disc, the second deep groove ball bearing and the piston body to return, gas in the annular cavity is discharged from the gas inlet, and the driving fluted disc is separated from the transmission fluted disc. Therefore, the utility model provides a single-point clutch is pneumatic, compares with the electromagnetism mode of operation, not only energy-conservation, helps making the operation precision of machine keep stable for a long time moreover.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic perspective view of single-point clutches according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a single point clutch according to an embodiment of the present invention;

fig. 3 is an engagement state diagram of a single point clutch provided by an embodiment of the present invention;

fig. 4 is a diagram illustrating a disengaged state of a single point clutch according to an embodiment of the present invention;

FIG. 5 is a schematic view of the piece 5 of FIG. 1;

FIG. 6 is a schematic view of the piece 2 of FIG. 1;

figure 7 is a schematic view of the piece 1 of figure 1.

Labeled as:

1. the device comprises a driving fluted disc, a piston body, a cylinder body, a gas inlet 41, a stop groove 42, a rotating shaft 5, a snap spring 51, a locating pin 6, a locating pin 61, an elastic cylindrical pin 71, a deep groove ball bearing , a second deep groove ball bearing 72, a return spring 8, a baffle 9, a piston body, a cylinder body, a piston rod;

10. an electromagnetic valve; 20. a muffler; 30. and (4) air source equipment.

Detailed Description

For ease of understanding, the present invention will now be described with reference to the accompanying drawings, step .

Referring to fig. 1 and 2, fig. 1 is a schematic perspective view of single-point clutches provided in the embodiment of the present invention, fig. 2 is a schematic view of a single-point clutch provided in the embodiment of the present invention, the single-point clutch provided in the embodiment of the present invention is a jaw clutch, including a driving toothed disc 1, a driving toothed disc 2, a piston body 3, a cylinder block 4 and a rotating shaft 5, wherein the driving toothed disc 2 is in dynamic coupling with the rotating shaft 5 through a key, the piston body 3 and the cylinder block 4 are sequentially disposed on a side of the driving toothed disc 2 opposite to a side of the driving toothed disc 1, the cylinder block 4 is coupled with the rotating shaft 5 through a deep groove ball bearing 71, the piston body 3 is coupled with the driving toothed disc 2 through a second deep groove ball bearing 72, meanwhile, the piston body 3 and the cylinder block 4 are in sliding coupling through a mutually embedded annular groove and an annular convex structure, an annular cavity is formed between an end surface of the annular convex and the annular groove, an air inlet 41 communicated with the annular cavity is disposed on an outer peripheral surface of the cylinder block 4, a side of the driving toothed disc 2 opposite to.

It should be noted that "single point clutch" means that only positions of the clutch can be meshed with each other in whole circles of the driving fluted disc 2 rotating relative to the driving fluted disc 1, that is, the clutch has the transmission property of position only, as shown in fig. 6 and 7, the teeth on the end faces of the driving fluted disc 2 and the driving fluted disc 1 are irregular, so that the clutch is guaranteed to be single point clutch.

The shaft 5 is adapted to be connected to a power unit of a machine, and is generally configured as a cylindrical shaft with a key slot on an inner wall, since the driving toothed disc 2 is movably coupled to the shaft 5 by a key, the driving toothed disc 2 can rotate with the shaft 5 and simultaneously can axially move relative to the shaft 5, in a specific practical application, the key coupling between the driving toothed disc 2 and the shaft 5 can be a guide key, a sliding key or a spline, as can be seen from fig. 5 and 6, in this embodiment, the driving toothed disc 2 and the shaft 5 are in a spline coupling.

The piston body 3 and the cylinder block 4 are slidably coupled by a ring groove and a ring protrusion structure that are fitted to each other, as shown in fig. 2, in this embodiment, the ring protrusion is a structure on the cylinder block 4, and the ring groove is a structure on the piston body 3. Of course, in other embodiments, it is also possible to interchange the ring protrusions and the ring grooves, i.e. the ring grooves can be designed as structures on the cylinder block 4 and the ring protrusions as structures on the piston body 3.

An annular cavity is formed between the end face of the annular protrusion and the annular groove, so that after pressure gas is introduced from the gas inlet 41 of the cylinder block 4, the pressure gas in the annular cavity can enable the piston body 3 to be uniformly stressed on the whole circumference. In order to improve the airtightness, an O-ring seal may be provided on a sliding surface between the annular projection and the annular groove.

As shown in fig. 2, in the present embodiment, the inner ring of the second deep groove ball bearing 72 is mounted on the piston body 3, and the driving fluted disc 2 is sleeved on the outer ring of the second deep groove ball bearing 72. In other embodiments, the arrangement may be reversed, that is, the inner ring of the second deep groove ball bearing 72 is mounted on the driving toothed disc 2 and the piston body 3 is sleeved on the outer ring of the second deep groove ball bearing 72 by interchanging the mounting structures.

In this embodiment, the baffle 9 is fixed on the rotating shaft 5 by a snap spring 51.

The embodiment of the utility model provides a single-point clutch's theory of operation as follows:

a) pressure gas enters the ring cavity from the gas inlet 41 of the cylinder body 4 to push the piston body 3, the second deep groove ball bearing 72 and the driving fluted disc 2, after the return spring 8 is compressed, the driving fluted disc 2 is jointed with the transmission fluted disc 1, and the joint state is shown in fig. 3;

b) the return spring 8 extends to push the driving fluted disc 2, the second deep groove ball bearing 72 and the piston body 3 to return, the gas in the annular cavity is exhausted from the gas inlet 41 of the cylinder body 4, the driving fluted disc 2 is separated from the driving fluted disc 1, and the separated state is shown in fig. 4.

As shown in fig. 2, in a specific practical application, the electromagnetic valve 10 is disposed on a pipeline connecting the air supply device 30 and the cylinder block 4 as , the electromagnetic valve 10 is a two-position three-way electromagnetic valve with an inlet and an outlet , and the muffler 20 is connected to a port of the electromagnetic valve 10 as an exhaust port.

As shown in fig. 1, the outer surface of the cylinder block 4 is provided with a stop groove 42, the stop groove 42 is located on the edge where the outer end surface of the cylinder block 4 and the outer peripheral surface intersect, and the stop groove 42 is used for providing types of clamping structures with the frame to resist the rotating movement tendency of the cylinder block 4.

, in order to resist the tendency of the piston body 3 to rotate, the cylinder block 4 and the piston body 3 are provided with positioning holes extending along the axial direction of the rotating shaft 5, and positioning pins 6 are inserted into the positioning holes, as shown in fig. 2.

As shown in fig. 1, the positional relationship among the air inlet 41, the stopper groove 42, and the positioning pin 6 is such that the positioning pin 6 is located 180 ° from the air inlet 41 and the stopper groove 42 is located 90 ° from the air inlet 41 in the circumferential direction of the rotary shaft 5.

As shown in fig. 2, in order to prevent the positioning pin 6 from withdrawing itself, a pin hole extending in the radial direction of the rotating shaft 5 is formed in the outer circumferential surface of the cylinder block 4, the pin hole is communicated with a positioning hole in the cylinder block 4, and an elastic cylindrical pin 61 in the pin hole passes through a through hole in the positioning pin 6. The positioning pin 6 is blocked by the elastic cylindrical pin 61, so that the positioning pin cannot be withdrawn by itself, and the elastic cylindrical pin 61 expands in the through hole of the positioning pin 6 and the pin hole of the cylinder block 4 by means of elastic deformation of the elastic cylindrical pin, so that the positioning pin cannot be withdrawn by itself.

Various modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the -like principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention.

Claims

The single-point clutches are characterized in that the single-point clutch is a jaw clutch and comprises a driving fluted disc (2) and a transmission fluted disc (1), the driving fluted disc (2) is movably connected with a rotating shaft (5) through a key, a piston body (3) and an air cylinder body (4) are sequentially arranged on the side of the driving fluted disc (2) back to side of the transmission fluted disc (1), the piston body (3) is slidably connected with the air cylinder body (4) through a mutually embedded annular groove and an annular convex structure, an annular cavity is formed between the end surface of the annular convex and the annular groove, and an air inlet (41) communicated with the annular cavity is formed on the outer peripheral surface of the air cylinder body (4);

the cylinder body (4) is connected with the rotating shaft (5) through an th deep groove ball bearing (71), and the piston body (3) is connected with the driving fluted disc (2) through a second deep groove ball bearing (72);

drive fluted disc (2) is relative the side of drive fluted disc (1) is provided with reset spring (8), reset spring (8) both ends respectively with drive fluted disc (2) and baffle (9) butt, baffle (9) with be quiet hookup between pivot (5).
2. The single point clutch according to claim 1, wherein an O-ring seal is disposed on a sliding surface between the annular groove and the annular projection.
3. The single point clutch according to claim 2, characterized in that the collar is a structure on the cylinder block (4).
4. The single point clutch according to claim 1, characterized in that the inner ring of the second deep groove ball bearing (72) is mounted on the piston body (3).
5. The single-point clutch according to claim 1, characterized in that an outer surface of the cylinder block (4) is provided with a stopper groove (42), the stopper groove (42) being located on an edge where an outer end surface and an outer peripheral surface of the cylinder block (4) intersect.
6. The single-point clutch according to claim 5, wherein the cylinder block (4) and the piston body (3) are provided with positioning holes extending along the axial direction of the rotating shaft (5), and positioning pins (6) are arranged in the positioning holes in a penetrating manner.
7. The single point clutch according to claim 6, characterized in that the positioning pin (6) is located at 180 ° from the air inlet (41) and the detent groove (42) is located at 90 ° from the air inlet (41) in the circumferential direction of the rotating shaft (5).
8. The single-point clutch according to claim 7, wherein a pin hole extending in the radial direction of the rotating shaft (5) is formed in the outer peripheral surface of the cylinder block (4), the pin hole is communicated with the positioning hole in the cylinder block (4), and an elastic cylindrical pin (61) in the pin hole passes through a through hole in the positioning pin (6).
9. The single point clutch according to any of claims 1-8, wherein the rotating shaft (5) is a splined inner wall barrel shaft.