阅读说明：本技术 一种旋转驱动机构 (Rotary driving mechanism ) 是由 陆文益 陆茜 于 2020-11-24 设计创作，主要内容包括：本发明公开了一种旋转驱动机构,包括中空的缸体、沿着缸体的长度延伸方向可滑动的设于缸体内的活塞座、一端与活塞座相连接且穿设于缸体中的活塞杆、两个分别开设于缸体的两端部的用于向缸体内通入通出流动介质的进出口,活塞杆的长度延伸方向与缸体的长度延伸方向一致且其另一端能够配合的穿出缸体,其中,缸体在水平面上的投影绕着一圆周方向延伸。本发明的旋转驱动机构,通过设置水平面上的投影能够绕着一圆周方向延伸的缸体,并在缸体内设置相匹配的活塞杆,利用流动介质推动活塞杆在缸体内伸缩往复实现旋转驱动,具有无噪声、运动平稳、速度快慢可调可控、结构简单、使用方便等优点,且其驱动效率极高。(The invention discloses a rotary driving mechanism which comprises a hollow cylinder body, a piston seat, a piston rod, two inlet and outlet ports and a through cylinder body, wherein the piston seat is arranged in the cylinder body in a sliding manner along the length extension direction of the cylinder body, one end of the piston rod is connected with the piston seat and penetrates through the cylinder body, the two inlet and outlet ports are respectively arranged at two end parts of the cylinder body and are used for introducing and discharging a flowing medium into the cylinder body, the length extension direction of the piston rod is consistent with the length extension direction of the cylinder body, the other end of the piston rod can penetrate through the cylinder body in a matched. The rotary driving mechanism has the advantages of no noise, stable movement, adjustable and controllable speed, simple structure, convenient use and the like, and has extremely high driving efficiency.)

1. A rotary drive mechanism characterized by: comprises a hollow cylinder body (1), a piston seat (2) which is arranged in the cylinder body (1) in a sliding way along the length extension direction of the cylinder body (1), a piston rod (3) one end of which is connected with the piston seat (2) and is arranged in the cylinder body (1) in a penetrating way, two inlets and outlets (4) which are respectively arranged at the two end parts of the cylinder body (1) and are used for leading in and leading out flowing media into the cylinder body (1), the length extension direction of the piston rod (3) is consistent with the length extension direction of the cylinder body (1) and the other end of the piston rod can penetrate out of the cylinder body (1) in a matching way,

wherein the projection of the cylinder body (1) on a horizontal plane extends around a circumferential direction.

2. A rotary drive mechanism as claimed in claim 1, wherein: the projection of the cylinder body (1) on the horizontal plane is arc-shaped, the central angle a of the arc-shaped cylinder body is smaller than 180 degrees, and the projection of the cylinder body (1) on the vertical plane is a line segment.

3. A rotary drive mechanism as claimed in claim 2, wherein: the rotary driving mechanism further comprises a connecting portion (5) connected with the piston rod (3) and penetrating out of one end portion of the cylinder body (1), and a medium channel (6) arranged on the connecting portion (5), wherein the medium channel (6) is communicated with an inlet and an outlet (4) of the end portion, far away from one side of the piston rod (3), of the piston seat (2).

4. A rotary drive mechanism as claimed in claim 1, wherein: the projections of the cylinder body (1) on the horizontal plane are annular, and the projections of the two end parts of the cylinder body on the vertical plane are mutually overlapped.

5. A rotary drive mechanism as claimed in claim 4, wherein: the rotary driving mechanism further comprises a first linear rail (7) arranged on the periphery of the outer side of the cylinder body (1) in a surrounding mode, and a first sliding module (8) arranged on the first linear rail (7) in a sliding mode, the length extending direction of the first linear rail (7) is consistent with that of the cylinder body (1), and one end, penetrating out of the cylinder body (1), of the piston rod (3) can be connected to the first sliding module (8) in a matched mode.

6. A rotary drive mechanism as claimed in claim 4, wherein: rotatory actuating mechanism still including the internal connection in second linear rail (9), the slidable of the inside lateral part of cylinder body (1) are located second slip module (10) on second linear rail (9), connect in third linear rail (11), slidable on second slip module (10) are located third slip module (12) on third linear rail (11), second linear rail (9) become the ring form and set up along the horizontal direction, third linear rail (11) extend along vertical direction, piston rod (3) are worn out the one end of cylinder body (1) can the complex connect in on third slip module (12).

7. A rotary drive mechanism as claimed in claim 4, wherein: the rotary driving mechanism further comprises at least one guide block (13) movably sleeved on the piston rod (3) and penetrating out of one end of the cylinder body (1) and at least one guide seat (14) arranged on the upper side portion of the cylinder body (1), wherein the guide seat (14) is located on a sliding path of the piston rod (3), and the guide block (13) can be clamped and embedded in the guide seat (14) in a matched mode.

8. A rotary drive mechanism as claimed in any one of claims 1 to 7, wherein: the rotary driving mechanism further comprises a front end cover (15) and a rear end cover (16) which are respectively connected to the two ends of the cylinder body (1), the piston seat (2) is close to the rear end cover (16), and the other end of the piston rod (3) can penetrate out of the front end cover (15) in a matched mode.

9. A rotary drive mechanism as claimed in claim 8, wherein: piston seat (2) with piston rod (3) are hollow structure, rotary drive mechanism still includes: one end connect in on rear end cap (16), the other end wear to locate in proper order piston seat (2) with guide bar (17) in piston rod (3) set up in spout (18) on the inner wall of piston seat (2), along the length extending direction of spout (18) is arranged and rotatable locates a plurality of balls (19) in spout (18), a plurality of balls (19) can the complex conflict in on guide bar (17).

10. A rotary drive mechanism as claimed in claim 8, wherein: the rotary driving mechanism further comprises a first sealing assembly (20) which is sleeved on the piston rod (3) and annularly abuts against the inner side peripheral portion of the front end cover (15), and a second sealing assembly (21) which is sleeved on the piston seat (2) and annularly abuts against the inner side peripheral portion of the cylinder body (1).

Technical Field

The present invention relates to a rotary drive mechanism.

Background

The existing axial center rotating power system, such as a hydraulic motor and an electric motor, or a rotating mechanism consisting of an electric motor, a speed reducer, a gear and the like and a transmission device using an eccentric connecting rod as an auxiliary device, has a complex structure and low use efficiency when performing annular reciprocating motion.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a rotary driving mechanism with simple structure and high efficiency.

In order to achieve the purpose, the invention adopts the technical scheme that:

a rotary driving mechanism comprises a hollow cylinder body, a piston seat arranged in the cylinder body in a sliding manner along the length extension direction of the cylinder body, a piston rod with one end connected with the piston seat and penetrating the cylinder body, two inlets and outlets respectively arranged at two end parts of the cylinder body and used for introducing and passing a flowing medium into the cylinder body, the length extension direction of the piston rod is consistent with the length extension direction of the cylinder body, and the other end of the piston rod can penetrate out of the cylinder body in a matching manner,

wherein a projection of the cylinder body on a horizontal plane extends around a circumferential direction.

Preferably, the projection of the cylinder on the horizontal plane is in a circular arc shape, the central angle a of the cylinder is less than 180 degrees, and the projection of the cylinder on the vertical plane is a line segment. Therefore, the rotary driving machine forms a horizontal arc shape, realizes the rotary driving of the object on a horizontal plane, and has the maximum stroke when the piston rod is contacted with the other end of the cylinder body.

Further preferably, the rotary driving mechanism further includes a connecting portion connected to the piston rod and penetrating through an end of the cylinder body, and a medium passage provided on the connecting portion, and the medium passage is communicated with an inlet and an outlet of an end of the piston seat on a side away from the piston rod. In this way, the connecting portion can be attached with a jig such as a robot hand, and the jig can be driven by the flowing medium flowing in through the medium passage.

Preferably, the projection of the cylinder on the horizontal plane is annular, and the projections of the two ends of the cylinder on the vertical plane are overlapped. Thus, the cylinder can form a spiral shape, and the cylinder can be applied to a spiral driving environment.

Further preferably, the rotary driving mechanism further includes a first linear rail disposed around the outer peripheral portion of the cylinder, and a first sliding module slidably disposed on the first linear rail, a length extending direction of the first linear rail is identical to a length extending direction of the cylinder, and one end of the piston rod, which penetrates through the cylinder, is connected to the first sliding module in a manner of being capable of being matched with the cylinder. Thus, the first sliding module can be connected with an object and can do spiral reciprocating motion along the first linear rail.

Further preferably, the rotary driving mechanism further comprises a second linear rail, a slidable sliding module, a third linear rail and a third sliding module, wherein the second linear rail is internally connected to the inner side portion of the cylinder body, the second sliding module is slidably arranged on the second linear rail, the third linear rail is connected to the second sliding module, the third sliding module is slidably arranged on the third linear rail, the second linear rail is in a circular ring shape and is arranged along the horizontal direction, the third linear rail extends along the vertical direction, and the piston rod penetrates out of one end of the cylinder body and can be connected to the third sliding module in a matched mode. Therefore, the driving force of the piston rod in the vertical direction, which is in spiral motion, can be removed through the motion of the third sliding module in the vertical direction, so that the piston rod can drive the second sliding module to do rotary reciprocating motion in the horizontal direction on the second linear rail.

Further preferably, the rotary driving mechanism further comprises at least one guide block movably sleeved on one end of the piston rod penetrating out of the cylinder body, and at least one guide seat arranged on the upper side portion of the cylinder body, wherein the guide seat is positioned on the sliding path of the piston rod, and the guide block can be matched and clamped in the guide seat.

According to an embodiment of the present invention, the guide block is annular and has three guide seats, the diameter of the three guide blocks is gradually reduced along a direction away from the cylinder body, and the height of the three guide seats is gradually increased along a protruding direction of the piston rod.

Preferably, the rotary driving mechanism further comprises a front end cover and a rear end cover which are respectively connected to two ends of the cylinder body, the piston seat is arranged close to the rear end cover, and the other end of the piston rod can penetrate out of the front end cover in a matched mode.

Further preferably, the piston seat and the piston rod are both hollow structures, and the rotary drive mechanism further includes: one end connect in on the rear end cover, the other end wear to locate in proper order the piston seat with guide bar in the piston rod sets up in spout on the inner wall of piston seat, along the length extending direction of spout arranges and rotatable locates a plurality of balls in the spout, a plurality of balls can the complex conflict in on the guide bar.

Preferably, the rotary driving mechanism further includes a first sealing assembly sleeved on the piston rod and annularly abutting against the inner peripheral portion of the front end cover, and a second sealing assembly sleeved on the piston seat and annularly abutting against the inner peripheral portion of the cylinder body.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the rotary driving mechanism has the advantages of no noise, stable movement, adjustable and controllable speed, simple structure, convenient use and the like, and has extremely high driving efficiency.

Drawings

Fig. 1 is a schematic view of the internal structure of a rotary drive mechanism in embodiment 1 of the present invention;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

fig. 3 is a schematic top view of a rotary drive mechanism in embodiment 2 of the present invention;

fig. 4 is a schematic front view of a rotary drive mechanism in embodiment 2 of the present invention;

FIG. 5 is a schematic view of a guide block and a guide shoe in embodiment 2 of the present invention;

fig. 6 is a schematic cross-sectional view of B-B in fig. 3.

In the figure: 1. a cylinder body; 2. a piston seat; 3. a piston rod; 4. an inlet and an outlet; 5. a connecting portion; 6. a media channel; 7. a first wire track; 8. a first sliding module; 8a, a first slide block; 8b, a first bracket; 9. a second wire track; 10. a second sliding module; 10a, a second slide block; 10b, a second bracket; 11. a third wire track; 12. a third sliding module; 12a, a third slide block; 12b, a third bracket; 13. a guide block; 14. a guide seat; 15. a front end cover; 16. a rear end cap; 17. a guide bar; 18. a chute; 19. a ball bearing; 20. a first seal assembly; 21. a second seal assembly; 22. a buffer seat; 23. and (5) sealing rings.

Detailed Description

The technical scheme of the invention is further explained by combining the attached drawings.

The invention relates to innovation of a rotary power system, and provides a rotary driving mechanism, wherein a cylinder body which can extend around a circumferential direction through projection on a horizontal plane is arranged, a matched piston rod is arranged in the cylinder body, the piston rod is pushed by a flowing medium to stretch and reciprocate in the cylinder body to realize rotary driving, and the rotary driving mechanism has the advantages of no noise, stable motion, adjustable and controllable speed, simple structure, convenience in use and the like, and has extremely high driving efficiency.

Example 1

Referring to fig. 1-2, a rotary driving mechanism is shown, which includes a hollow cylinder 1, a piston seat 2 slidably disposed in the cylinder 1 along a length extending direction of the cylinder 1, a piston rod 3 having one end connected to the piston seat 2 and passing through the cylinder 1, and two inlets and outlets 4 respectively disposed at two ends of the cylinder 1 for introducing flowing media into the cylinder 1, wherein a length extending direction of the piston rod 3 is the same as a length extending direction of the cylinder 1, and the other end of the piston rod can pass through the cylinder 1 in a matching manner, and a projection of the cylinder 1 on a horizontal plane extends around a circumferential direction.

Specifically, the projection of the cylinder 1 on the horizontal plane is in a circular arc shape, and the projection of the cylinder 1 on the vertical plane is a line segment. Therefore, the whole cylinder body 1 forms an arc arranged along the horizontal direction, and the flowing medium is led in and led out from the two inlet and outlet ports 4 respectively, so that the flowing medium can gradually push the piston seat 2 to do reciprocating motion in the cylinder body 1, the rotary driving of an object on the horizontal plane can be realized, and the extending end of the piston rod 3 is in the maximum stroke when contacting with the other end of the cylinder body 1.

In this example, the central angle a of the cylinder 1 is less than 180 °. Therefore, the stroke of the piston rod 3 inside and outside the cylinder body 1 can be enclosed into a complete circle, and the stroke maximization is realized.

Further, the above-mentioned rotary driving mechanism further includes a front end cover 15 and a rear end cover 16 respectively connected to two ends of the cylinder body 1, the piston seat 2 is disposed near the rear end cover 16, and the other end of the piston rod 3 can be fitted through the front end cover 15.

Preferably, a soft buffer seat 22 is further provided on the side of the piston seat 2 close to the rear end cap 16 for buffering between the piston seat 2 and the rear end cap 16, and the buffer seat 22 can be snapped into or out of the rear end cap 16.

Further, as shown in fig. 2, the piston seat 2 and the piston rod 3 are both hollow structures, and the rotary driving mechanism further includes: one end is connected on rear end cover 16, the guide bar 17 of wearing to locate in piston seat 2 and piston rod 3 in proper order to the other end, sets up spout 18 on the inner wall of piston seat 2, arranges and rotatable a plurality of balls 19 of locating in spout 18 along the length extending direction of spout 18, and a plurality of balls 19 can the complex conflict on guide bar 17. Here, by providing the guide rod 17, the sliding guide of the piston rod 3 within the cylinder 1 can be achieved; and the friction force between the piston rod 3 and the guide rod 17 is reduced through the arrangement of the ball 19 and the sliding groove 18, and the driving efficiency is improved.

In this embodiment, the rotary driving mechanism further includes a first sealing assembly 20 sleeved on the piston rod 3 and annularly abutting against the inner peripheral portion of the front end cover 15, and a second sealing assembly 21 sleeved on the piston seat 2 and annularly abutting against the inner peripheral portion of the cylinder 1. The first sealing assembly 20 includes two sealing rings sequentially arranged along the length extending direction of the piston rod 3, and the second sealing assembly 21 includes a sealing ring, a wear-resistant ring, a sealing ring, and a magnetic ring sequentially arranged along the length direction of the piston seat 2. Further, seal rings 23 are provided between the front end cover 15 and the cylinder block 1 and between the rear end cover 16 and the cylinder block 1. The rotary drive mechanism in this example also includes corresponding slide bearings on the sides of the first and second seal assemblies 20, 21.

Preferably, the rotary driving mechanism further includes a connecting portion 5 connected to the front end cap 15, and a medium passage 6 opened in the connecting portion 5, wherein the medium passage 6 communicates with the inlet/outlet 4 of the rear end cap 16 through the inner space of the piston rod 3. In this way, the connecting portion 5 can be attached with a jig such as a robot hand, and the jig can be driven by the flowing medium flowing in through the medium passage 6. The flowing medium in this case may be a gas or hydraulic oil or the like.

Example 2

This example differs from example 1 in that: in the present embodiment, the cylinder 1 is not arcuate but helical, and its projection on the horizontal plane is annular and its projections on the vertical plane at both ends overlap each other. In this way, the rotary drive mechanism in this example can realize the rotary drive of the object in the horizontal direction and also can realize the screw drive of the object, and the application range is wider.

Specifically, as shown in fig. 3 to 6, the rotary drive mechanism in this embodiment further includes a first rail 7 disposed around the outer peripheral portion of the cylinder 1, a first slide module 8 slidably disposed on the first rail 7, a second rail 9 inscribed on the inner portion of the cylinder 1, a second slide module 10 slidably disposed on the second rail 9, a third rail 11 connected to the second slide module 10, and a third slide module 12 slidably disposed on the third rail 11.

The length extending direction of the first line rail 7 is consistent with that of the cylinder body 1 and is also spiral, and one end of the piston rod 3 penetrating through the cylinder body 1 can be connected to the first sliding module 8 in a matched mode; the second linear rail 9 is circular and arranged along the horizontal direction, the third linear rail 11 extends along the vertical direction, and one end of the piston rod 3 penetrating through the cylinder body 1 can be connected to the third sliding module 12 in a matched manner.

Thus, if the object is connected to the first sliding module 8, the first sliding module 8 can drive the object to make a spiral reciprocating motion along the first track 7, so as to realize spiral driving; if the object is connected to the second sliding module 10, the second sliding module 10 can drive the object to perform a rotational reciprocating motion in the horizontal direction along the second linear rail 9, and the rotational stroke is longer than that in embodiment 1. Because the motion track of the piston rod 3 is spiral, the driving force of the piston rod 3 is spiral driving force, and based on this, the third sliding module 12 is provided in this example, and the lifting driving force of the piston rod 3 is removed by the up-and-down motion of the third sliding module 12 on the third linear rail 11, so that the piston rod 3 can drive the second sliding module 10 to make a rotary reciprocating motion in the horizontal direction.

Specifically, the first sliding module 8 includes a first sliding block 8a and a first bracket 8b connected to the first sliding block 8a, wherein the first sliding block 8a is disposed on the first wire track 7, and the first bracket 8b connects the piston rod 3 and the object; the second sliding module 10 includes a second sliding block 10a and a second bracket 10b connected to the second sliding block 10a, the third sliding module 12 includes a third sliding block 12a and a third bracket 12b connected to the third sliding block 12a, the third bracket 12b is connected to the piston rod 3, the third sliding block 12a is disposed on a third linear rail 11, the third linear rail 11 is disposed on the second bracket 10b, the second bracket 10b extends toward the radial outer side of the cylinder 1 for connecting an object, and the second sliding block 10a is disposed on the second linear rail 9 on the inner side.

In this embodiment, as shown in fig. 5 to 6, the above-mentioned rotation driving mechanism further includes three guide blocks (13a, 13b, 13c) movably sleeved on one end of the piston rod 3 penetrating through the cylinder 1, and three guide seats (14a, 14b, 14c) arranged on the upper side portion of the cylinder 1, wherein the guide seats (14a, 14b, 14c) are located on the sliding path of the piston rod 3, and the guide blocks (13a, 13b, 13c) can be fittingly engaged with the guide seats (14a, 14b, 14 c).

Further, the diameters of the three guide blocks (13a, 13b, 13c) are gradually reduced in a direction away from the cylinder 1, and the heights of the three guide seats (14a, 14b, 14c) are gradually increased in the extending direction of the piston rod 3. In this way, during the extension of the piston rod 3, the three guide seats (14a, 14b, 14c) with gradually increasing heights can sequentially clamp the three guide blocks (13a, 13b, 13c) with gradually decreasing diameters, and the sliding guide of the piston rod 3 can be realized while the movement of the piston rod 3 is not influenced.

The guide base 14 in this example is engaged with the upper side of the cylinder block 1 and fixed by bolts.

In this embodiment, since the guide block 13 and the guide holder 14 are provided, the guide rod 17 in embodiment 1 can be flexibly selected depending on the magnitude of the push-pull force to be used.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.