CN210565897U

CN210565897U - Shaft-clasping type elastic clutch locking device

Info

Publication number: CN210565897U
Application number: CN201921679758.7U
Authority: CN
Inventors: 王荣军; 冀艳婷; 贾建强; 张晶
Original assignee: Hoz Minimally Invasive Medical Technology Beijing Co ltd
Current assignee: Hoz Minimally Invasive Medical Technology Beijing Co ltd
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-05-19
Anticipated expiration: 2029-10-09

Abstract

The utility model discloses a shaft-embracing type elastic clutch locking device belongs to locking mechanical technical field, the hydraulic cylinder comprises a cylinder body, be equipped with axial extension's central through-hole on the cylinder body, be equipped with on the cylinder body with the coaxial setting of central through-hole and cross-section are annular piston chamber, piston intracavity slidable mounting has annular piston, the revolving axle is installed to central through-hole internal rotation, the revolving axle stretches out the cylinder body, be equipped with spacing shaft shoulder on the revolving axle, the cover is equipped with the lock sleeve on the revolving axle, the lock sleeve includes chassis and orientation the toper section of thick bamboo of annular piston one end, annular array is provided with the uncovered groove of a plurality of on the toper section of thick bamboo, be equipped with on the annular piston with the extrusion portion of toper section of thick bamboo looks adaptation, be equipped with the stop. The utility model provides a present locking device structure complicated, with high costs and the insecure technical problem of performance, the wide application is in mechanical equipment.

Description

Shaft-clasping type elastic clutch locking device

Technical Field

The utility model belongs to the technical field of locking mechanism, especially, relate to a hold shaft type elastic clutch locking device.

Background

At present, a basic multi-piece electromagnetic clutch used when power connection needs to be transmitted or disconnected in medical equipment and mechanical equipment can be used only by electric power, and materials of friction pieces are selected and used, so that the requirements can be met by professional manufacturers in processing and manufacturing, and the requirements on the thickness consistency, the smoothness, the shape and the size of the friction pieces are higher due to the fact that a plurality of fixed pieces and movable pieces are matched for use. And most of the medical equipment depends on electric energy, so that the application range of the medical equipment is limited, the medical equipment is limited to be used in places with electric power supply, the medical equipment is not suitable for special environments such as disaster areas, wartime and the like, the sharing of medical resources cannot be realized, doctors cannot perform effective treatment in the first time, patients needing emergency treatment have to be transferred to a remote hospital, and precious treatment time is wasted. In addition, the power source of most of the existing medical equipment has the problems of large volume and inconvenient carrying. Some medical equipment also uses a passive sealing hydraulic system, but the rotating shaft is locked by using a traditional multi-plate friction clutch structure, the structure size is large, the locking force is small, and the locking reliability is greatly reduced because the locking cannot be used in occasions with large bearing torque.

Therefore, in the technical field of locking mechanisms, there is still a need for research and improvement on a shaft-embracing type elastic clutch locking device, which is also a research focus and a focus in the technical field of current locking mechanisms, and more a starting point of the present invention.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model discloses the technical problem that solve is: the utility model provides a shaft-clasping type elastic clutch locking device, which solves the technical problems of complex structure, high cost and unreliable service performance of the prior locking device.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a hold shaft type elastic clutch locking device, includes the cylinder body, be equipped with axial extension's central through-hole on the cylinder body, be equipped with on the cylinder body with the coaxial setting of central through-hole and cross-section are annular piston chamber, piston intracavity slidable mounting has annular piston, the revolving axle is installed to central through-hole internal rotation, the revolving axle stretches out the cylinder body, be equipped with spacing shaft shoulder on the revolving axle, the cover is equipped with the lock sleeve on the revolving axle, the lock sleeve includes chassis and orientation the toper section of thick bamboo of annular piston one end, annular array is provided with a plurality of uncovered groove on the toper section of thick bamboo, be equipped with on the annular piston with the extrusion portion of toper section of thick bamboo looks adaptation, be equipped with the stop collar between.

As a modification, the taper of the tapered barrel is 30 degrees.

As a further improvement, the chassis is provided with a plurality of compensation grooves, and the compensation grooves extend along the radial direction of the chassis and extend to the large-diameter and small-diameter positions of the chassis.

As a further improvement, the compensation groove and the open groove are arranged in a staggered mode.

As a further improvement, an anti-rotation mechanism is arranged between the locking sleeve and the cylinder body.

As a further improvement, the anti-rotation mechanism comprises a limiting flange sleeved on the limiting sleeve, the limiting flange is fixedly connected with the cylinder body through a fastener, a plurality of limiting holes are formed in the limiting flange in an annular array mode, an anti-rotation flange is arranged on the chassis, the outer diameter of the anti-rotation flange is larger than that of the chassis, limiting pins are respectively arranged on two sides of the anti-rotation flange, and the limiting pins are matched with the limiting holes.

After the technical scheme is adopted, the beneficial effects of the utility model are that:

the utility model provides a hold shaft type elastic clutch locking device releases or retracts through annular piston for a toper section of thick bamboo produces elastic deformation, holds tightly or loosens the revolving axle, has realized the locking formula separation and reunion between cylinder body and the revolving axle, does not need external power supply, simple structure, low cost, excellent in use effect.

The chassis is provided with a plurality of compensation grooves, so that the structural strength of the chassis and the conical cylinder is ensured, and the chassis can also generate elastic deformation in the axial direction to compensate the displacement in the axial direction.

Because the anti-rotation mechanism is arranged between the lock sleeve and the cylinder body, after the assembly is completed, a proper limit hole is selected according to the position of the anti-rotation flange, and a limit pin is inserted into the limit holes on the two sides of the anti-rotation flange so as to prevent the chassis from rotating, and further improve the holding effect of the lock sleeve.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the range which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic structural diagram of a shaft-type elastic clutch locking device provided in the embodiment of the present invention;

3 FIG. 3 2 3 is 3 a 3 schematic 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3 of 3 FIG. 3 1 3; 3

Fig. 3 is a schematic structural view of a locking sleeve in the axle-hung type elastic clutch locking device provided by the embodiment of the invention;

in the figure: 1. the piston type hydraulic cylinder comprises a cylinder body, 101, a piston cavity, 2, an annular piston, 3, a rotating shaft, 301, a limiting shaft shoulder, 4, a locking sleeve, 401, a chassis, 402, a conical cylinder, 403, an open groove, 404, a compensation groove, 405, an anti-rotation flange, 5, a limiting sleeve, 6, a fastener, 7, a limiting flange, 701, a limiting hole, 8 and a limiting pin.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 and fig. 2, a shaft-embracing type elastic clutch locking device comprises a cylinder body 1, wherein a central through hole extending axially is arranged on the cylinder body 1, a piston cavity 101 which is coaxial with the central through hole and has an annular cross section is arranged on the cylinder body 1, an annular piston 2 is slidably arranged in the piston cavity 101, a rotating shaft 3 is rotatably arranged in the central through hole, the rotating shaft 3 extends out of the cylinder body 1, a limiting shaft shoulder 301 is arranged on the rotating shaft 3, a locking sleeve 4 is sleeved on the rotating shaft 3, the locking sleeve 4 comprises a base plate 401 and a conical cylinder 402 facing one end of the annular piston 2, the axis of the conical cylinder 402 is consistent with the axis of the rotating shaft 3, one end of the conical cylinder 402 facing the annular piston 2 is a small end, one end far away from the annular piston 2 is a large end, an annular array on the conical cylinder 402 is provided with a plurality of open grooves 403, the, the conical cylinder 402 can be elastically deformed in the radial direction, the annular piston 2 is provided with the extrusion part matched with the conical cylinder 402, the conicity of the conical cylinder 402 and the conicity of the extrusion part are both 30 degrees, so that the locking force is a boosting locking mechanism during extrusion, and the locking force of the mechanism is larger and more reliable when the same axial force acts. A limiting sleeve 5 is arranged between the chassis 401 and the limiting shaft shoulder 301, one end of the limiting sleeve 5 abuts against the chassis 401, and the other end of the limiting sleeve 5 abuts against the limiting shaft shoulder 301, so that the axial position of the locking sleeve 4 on the rotating shaft 3 is limited. When hydraulic oil is added into the piston cavity 101 and the annular piston 2 is pushed out, the extrusion part presses the conical cylinder 402, so that the conical cylinder 402 generates elastic deformation and tightly holds the rotating shaft 3, the cylinder body 1 and the rotating shaft 3 are relatively fixed, and when the hydraulic oil is discharged out of the piston cavity 101 and the annular piston 2 retracts under the action of the elastic deformation force of the conical cylinder 402, the conical cylinder 402 releases the rotating shaft 3, so that the rotating shaft 3 and the cylinder body 1 can relatively rotate, and the locking type clutch between the cylinder body 1 and the rotating shaft 3 is realized.

The chassis 401 is provided with a plurality of compensation grooves 404, the compensation grooves 404 extend along the radial direction of the chassis 401 and extend to the large diameter and small diameter positions of the chassis 401, and the compensation grooves 404 and the open grooves 403 are arranged in a staggered manner, so that not only is the structural strength of the chassis 401 and the conical barrel 402 ensured, but also the chassis 401 can generate elastic deformation in the axial direction to compensate the displacement in the axial direction.

An anti-rotation mechanism is arranged between the locking sleeve 4 and the cylinder body 1 and used for preventing the locking sleeve 4 from rotating in the working process. Specifically, the anti-rotation mechanism comprises a limiting flange 7 sleeved on a limiting sleeve 5, the limiting flange 7 is fixedly connected with the cylinder body 1 through a fastener 6, the fastener 6 is usually a bolt-nut combination, a plurality of limiting holes 701 are formed in the limiting flange 7 in an annular array, an anti-rotation flange 405 is arranged on the chassis 401, the outer diameter of the anti-rotation flange 405 is larger than that of the chassis 401, limiting pins 8 are respectively arranged on two sides of the anti-rotation flange 405, the limiting pins 8 are matched with the limiting holes 701, after assembly is completed, appropriate limiting holes 701 are selected according to the positions of the anti-rotation flange 405, the limiting pins 8 are inserted into the limiting holes 701 on two sides of the anti-rotation flange 405, the chassis 401 is prevented from rotating, and the holding effect of the locking sleeve 4 is further improved.

When the hydraulic cylinder is used, the cylinder body 1 is arranged on one side of a joint, the rotating shaft 3 is arranged on the other side of the joint, when the joint needs to be fixed, hydraulic oil is filled into the piston cavity 101, when the annular piston 2 is pushed out, the extrusion part presses the conical cylinder 402, so that the conical cylinder 402 generates elastic deformation, and the rotating shaft 3 is tightly held, so that the cylinder body 1 and the rotating shaft 3 are relatively fixed, and the joints are fixed; when relative rotation between the joints is required, hydraulic oil is discharged out of the piston cavity 101, and when the annular piston 2 retracts under the action of elastic deformation force of the conical cylinder 402, the conical cylinder 402 releases the rotating shaft 3, so that the rotating shaft 3 and the cylinder body 1 can rotate relatively to ensure the relative rotation between the joints.

The modes of injecting or discharging the hydraulic oil into or from the piston cavity 101 are various, a manual oil gun or a hydraulic cylinder can be used, a manual oil pump can be used, and the like, and the hydraulic oil gun or the hydraulic cylinder can be selected by a person skilled in the art according to needs, and the details are not described herein.

To sum up, the utility model provides a hold shaft type elastic clutch locking device does not need external power supply, simple structure, low cost, excellent in use effect.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a hold shaft type elastic clutch locking device, its characterized in that, includes cylinder body (1), be equipped with axial extension's central through-hole on cylinder body (1), be equipped with on cylinder body (1) with the coaxial setting of central through-hole and cross-section are annular piston chamber (101), slidable mounting has annular piston (2) in piston chamber (101), revolving axle (3) are installed to central through-hole internal rotation, revolving axle (3) stretch out cylinder body (1), be equipped with spacing shaft shoulder (301) on revolving axle (3), the cover is equipped with lock sleeve (4) on revolving axle (3), lock sleeve (4) include chassis (401) and orientation conical cylinder (402) of annular piston (2) one end, the annular array is provided with a plurality of open groove (403) on conical cylinder (402), be equipped with on annular piston (2) with the extrusion portion of conical cylinder (402) looks adaptation, and a limiting sleeve (5) is arranged between the chassis (401) and the limiting shaft shoulder (301).

2. The elastic clutch locking device of claim 1, wherein the taper of the tapered cylinder (402) is 30 degrees.

3. The elastic clutch locking device of a shaft embracing type according to claim 2, wherein the chassis (401) is provided with a plurality of compensation grooves (404), and the compensation grooves (404) extend along the radial direction of the chassis (401) and extend to the positions of the large diameter and the small diameter of the chassis (401).

4. A flexible clutch locking device according to claim 3, characterized in that the compensation groove (404) and the open groove (403) are staggered.

5. The shaft-embracing type elastic clutch locking device according to claim 4, wherein an anti-rotation mechanism is arranged between the locking sleeve (4) and the cylinder body (1).

6. The axial-type elastic clutch locking device according to claim 5, characterized in that the anti-rotation mechanism comprises a limiting flange (7) sleeved on the limiting sleeve (5), the limiting flange (7) is fixedly connected with the cylinder body (1) through a fastener (6), a plurality of limiting holes (701) are formed in the limiting flange (7) in an annular array mode, an anti-rotation flange (405) is arranged on the chassis (401), the outer diameter of the anti-rotation flange (405) is larger than that of the chassis (401), limiting pins (8) are arranged on two sides of the anti-rotation flange (405), and the limiting pins (8) are matched with the limiting holes (701).