CN209925471U

CN209925471U - Mechanical parking mechanism

Info

Publication number: CN209925471U
Application number: CN201920508026.5U
Authority: CN
Inventors: 孟宝星
Original assignee: Xuzhou College of Industrial Technology
Current assignee: Xuzhou College of Industrial Technology
Priority date: 2019-04-15
Filing date: 2019-04-15
Publication date: 2020-01-10
Anticipated expiration: 2029-04-15

Abstract

The utility model discloses a mechanical parking mechanism, which comprises a fixed frame, wherein a supporting shaft is fixedly arranged on the fixed frame, a sliding sleeve capable of moving along the axial direction of the supporting shaft is arranged on the supporting shaft, a rotatable friction disc is arranged on the outer peripheral wall of one end of the sliding sleeve, the friction disc and the sliding sleeve are coaxial, and a plurality of buffer units uniformly distributed along the circumferential direction are also arranged between the friction disc and the sliding sleeve; and the fixed frame is provided with a driving mechanism for driving the sliding sleeve to move. The utility model discloses a set up the buffer unit on the friction disk for the friction disk can and be reduced the buffering that produces the one end distance between the thing when the friction slows down, avoided the friction disk direct action on being reduced the thing and produced great impact force.

Description

Mechanical parking mechanism

Technical Field

The utility model relates to a decelerator technical field specifically is a mechanical parking mechanism.

Background

In the machining process, mechanical equipment cannot be separated, the mechanical equipment needs to be started and stopped in the running process, some mechanical equipment needs a brake mechanism when being stopped, such as cutting equipment, and after a blade motor is powered off, a blade can still rotate at a higher speed; the existing brake mechanism is often single, and the speed reduction is realized through friction of friction plates, so that the existing brake mechanism cannot buffer, and can generate large impact force when the friction plates are in contact, so that certain influence can be generated on equipment.

SUMMERY OF THE UTILITY MODEL

The technique that exists is not enough to the aforesaid, the utility model aims at providing a machinery parking mechanism realizes the brake of buffering formula, allows the friction disk when initial friction slows down, can follow the object rotation one end distance that is slowed down, and then produces the buffering, avoids direct contact to produce great impact force.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model provides a mechanical parking mechanism, which comprises a fixed frame, wherein a supporting shaft is fixedly arranged on the fixed frame, a sliding sleeve capable of moving along the axial direction of the supporting shaft is arranged on the supporting shaft, a rotatable friction disc is arranged on the outer peripheral wall of one end of the sliding sleeve, the friction disc and the sliding sleeve are coaxial, and a plurality of buffer units uniformly distributed along the circumferential direction are also arranged between the friction disc and the sliding sleeve; and the fixed frame is provided with a driving mechanism for driving the sliding sleeve to move.

Preferably, a stepped hole is formed in the center of the friction disc, the friction disc forms a first inner circumferential wall and a second inner circumferential wall with different inner diameters through the stepped hole, the inner diameter of the second inner circumferential wall is smaller than that of the first inner circumferential wall, the second inner circumferential wall is nested on the sliding sleeve, and the inner diameter of the second inner circumferential wall is the same as the outer diameter of the sliding sleeve.

Preferably, the buffer unit comprises a spring and two hinge columns fixedly arranged at two ends of the spring, wherein one hinge column is fixedly arranged on the first inner peripheral wall through a hinge seat, the other hinge column is fixedly arranged on the outer peripheral wall of the sliding sleeve through a hinge seat, and the hinge columns are rotatably arranged on the hinge seat through hinge shafts; when the spring is compressed to the shortest distance, the vertical distance of the axes of the two articulated shafts in the same buffer unit is larger than the difference between the radius of the first inner peripheral wall and the radius of the outer peripheral wall of the sliding sleeve.

Preferably, the sliding sleeve with the back shaft adopts splined connection, set up a plurality of along circumference evenly distributed's keyway on the internal perisporium of sliding sleeve, correspond be provided with on the back shaft with keyway matched with external tooth.

Preferably, the supporting shaft is fixedly arranged on the fixing frame through a plurality of supporting columns which are uniformly distributed along the circumferential direction.

Preferably, the driving mechanism comprises a pushing cylinder fixed on the fixed frame and a pushing sleeve fixedly arranged on the telescopic end of the pushing cylinder, and the end part of the pushing sleeve far away from the pushing cylinder is fixedly arranged on the sliding sleeve; the pushing sleeve is provided with a plurality of limiting grooves which correspond to the supporting columns one to one, and the supporting columns are connected with the limiting grooves in a sliding mode.

Preferably, the surface of the sliding sleeve far away from the pushing cylinder and the surface of the sliding sleeve far away from the pushing cylinder are coplanar, and a plurality of uniformly distributed bulges are arranged on the surface of the friction disc far away from the pushing cylinder.

The beneficial effects of the utility model reside in that: the utility model discloses a set up the buffer unit on the friction disk for the friction disk can and be reduced the buffering that produces the one end distance between the thing when the friction slows down, avoided the friction disk direct action on being reduced the thing and produced great impact force.

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 is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a mechanical parking mechanism according to an embodiment of the present invention (in an initial state, a pushing cylinder is not pushed out);

FIG. 2 is a schematic structural view of a friction disc and a sliding sleeve;

FIG. 3 is a schematic structural diagram of a buffer unit;

FIG. 4 is a schematic structural view of the push sleeve;

FIG. 5 is an enlarged view of portion A of FIG. 1;

FIG. 6 is a schematic structural view of a mechanical parking mechanism (push cylinder push out) provided by an embodiment of the present invention

Description of reference numerals: 1-fixed frame, 11-support frame, 2-support shaft, 3-friction disk, 31-buffer unit, 311-hinged seat, 312-hinged column, 313-spring, 314-hinged shaft, 32-first inner peripheral wall, 4-sliding sleeve, 41-key groove, 42-boss, 5-pushing cylinder, 6-pushing sleeve and 61-limiting groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Example (b):

as shown in fig. 1, the present invention provides a mechanical parking mechanism, which mainly comprises a fixed mount 1, wherein the fixed mount 1 is fixed on a base of an object to be decelerated, for example, when the object to be decelerated is a rotating wheel, the fixed mount is fixed on the base for supporting the rotating wheel to rotate; a supporting shaft 2 is fixedly arranged on the fixed frame 1, the supporting shaft 2 is fixedly arranged on the fixed frame 1 through a plurality of supporting columns 11 which are uniformly distributed along the circumferential direction, a sliding sleeve 4 which can move along the axial direction of the supporting shaft 2 is arranged on the supporting shaft 2, a friction disc 3 which can rotate is arranged on the outer circumferential wall of one end of the sliding sleeve 4, the friction disc 3 and the sliding sleeve 4 are coaxial, and a plurality of buffer units 31 (shown in figure 3) which are uniformly distributed along the circumferential direction are also arranged between the friction disc 3 and the sliding sleeve 4; the fixed frame 1 is provided with a driving mechanism for driving the sliding sleeve 4 to move;

a stepped hole is formed in the center of the friction disc 3, the friction disc 3 forms a first inner circumferential wall 32 and a second inner circumferential wall with two different inner diameters through the stepped hole, the inner diameter of the second inner circumferential wall is smaller than the inner diameter of the first inner circumferential wall 32, the second inner circumferential wall is nested on the sliding sleeve 4, and the inner diameter of the second inner circumferential wall is the same as the outer diameter of the sliding sleeve 4, so that the friction disc 3 can rotate on the sliding sleeve 4 finally, in addition, in order to limit the axial movement of the friction disc 3 on the sliding sleeve 4, as shown in fig. 5, an annular boss 42 is fixed on the outer circumferential wall of the sliding sleeve 4, and a sliding groove for the boss 42 to slide is formed in the.

With reference to fig. 2 and 3, the buffer unit 31 includes a spring 313 and two hinge columns 312 fixedly disposed at two ends of the spring 313, wherein one hinge column 312 is fixedly disposed on the first inner peripheral wall 32 through a hinge seat 311, the other hinge column 312 is fixedly disposed on the outer peripheral wall of the sliding sleeve 4 through the hinge seat 311, and the hinge column 312 is rotatably disposed on the hinge seat 311 through a hinge shaft 314; as shown in fig. 2, when the spring 313 is compressed to the shortest distance, the vertical distance (L2 in fig. 3) of the axes of the two hinge shafts 314 in the same buffer unit 31 is greater than the difference (L1 in fig. 2) between the radius of the first inner peripheral wall 32 and the radius of the outer peripheral wall of the sliding sleeve 4, such arrangement is that when the friction disc 3 rotates in the direction of the arrow b (in which the spring generates the compression 313 in the direction of the arrow a), when the spring 313 is compressed to the shortest distance (i.e., when the spring 313 is compressed to the limit), the friction disc 3 cannot continue to rotate relative to the sliding sleeve 4, and the buffer distance of the friction disc 3 ends; if L2 is smaller than L1 when the spring 313 is compressed to the shortest distance, and the friction disc 3 rotates along b, the spring 313 will generate two states when the spring 313 does not reach the compression limit, that is, on the basis of fig. 2, the spring 313 is compressed first and then compressed to stretched, and in the process, the spring 313 will have a stage of releasing potential energy, so that the friction disc 3 will generate a failure stage and lose the deceleration effect, and the stage of releasing potential energy, that is, the stage of the spring 313 being compressed to the original state, in which the acting force of the spring 313 becomes the power for pushing the decelerated object to continue rotating, rather than hindering the rotation, therefore, L2 is required to be larger than L1.

Continuing to combine fig. 2, in order to guarantee that sliding sleeve 4 can be along the axial displacement of back shaft 2, sliding sleeve 4 adopts splined connection with back shaft 2, sets up a plurality of keyway 41 along circumference evenly distributed on the internal perisporium of sliding sleeve 4 promptly, sets up the external tooth with keyway 41 matched with on back shaft 2, and then ensures that sliding sleeve 4 can not rotate for back shaft 2.

Referring to fig. 1, the driving mechanism includes a pushing cylinder 5 fixed on the fixing frame 1 and a pushing sleeve 6 fixedly disposed on the telescopic end of the pushing cylinder 5, wherein the pushing cylinder 5 may be a cylinder, and during actual operation, the cylinder supplies air by using an on-site air source to realize movement of the pushing sleeve 6 thereon, and the end of the pushing sleeve 6 far from the pushing cylinder 5 is fixedly disposed on the sliding sleeve 4; the push sleeve 6 is provided with a plurality of limiting grooves 61 corresponding to the supporting columns 11 one by one, the supporting columns 11 are connected with the limiting grooves 61 in a sliding mode, the supporting columns 11 are further connected with the limiting grooves 61 in a guiding mode, and the sliding sleeve 4 is limited to rotate relative to the supporting shaft 2.

Further, in order to increase the friction force between the friction disc 3 and the decelerated object, a plurality of protrusions are uniformly distributed on the surface of the friction disc 3 away from the push cylinder 5, the structure of the protrusions may be hemispherical, and in addition, the surface of the friction disc 3 away from the push cylinder 5 is coplanar with the surface of the sliding sleeve 4 away from the push cylinder 5, so that when the friction disc 3 works, the sliding sleeve 4 is not in contact with the decelerated object (the two surfaces are coplanar, wherein the friction disc 3 is provided with the protrusions, so the protrusions protrude out of the surface of the sliding sleeve 4 away from the push cylinder 5, and when the protrusions contact the decelerated object, the end of the sliding sleeve 4 away from the push cylinder 5 cannot contact the decelerated object); in addition, in actual operation, when the push cylinder 5 is not pushed out, a gap is required between the circular bottom wall inside the push sleeve 6 and the end of the support shaft 2 close to the push cylinder 5, so as to ensure that the push sleeve 6 can move axially to push the sliding sleeve 4 to move when the push cylinder 5 pushes, and after the push cylinder 5 pushes, the end of the support shaft 2 far from the push cylinder 5 cannot protrude out of the end of the sliding sleeve 4 far from the push cylinder 5, so as to prevent the support shaft 2 from contacting with the decelerated object, for example, the state shown in fig. 1 can be used as the initial state of the mechanism, fig. 2 can be used as the initial state of the spring 313, that is, when the push cylinder 5 does not push out the friction disc 3 and does not contact with the decelerated object, fig. 6 is the working state after the push cylinder 5 pushes out, and at this time, the friction disc 3 contacts with the decelerated object.

When the friction plate 3 is initially contacted with the object to be decelerated, the friction plate 3 can rotate with a distance along with the object to be decelerated due to the action of the buffer unit 31, so that the rotating force generated by the object to be decelerated is converted into the potential energy of the spring 313 to block the object to be decelerated to continue rotating, when the spring 313 does not generate compression, the friction plate 3 does not rotate relative to the sliding sleeve 4, and then continues to decelerate due to friction, and finally the object to be decelerated stops rotating, because the spring 313 has the rebound function, the spring 313 is thus able to return to its original position by itself before the next contact; in practical use, the specific elasticity of the spring 313 can be selected by itself, and the application is not limited thereto

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A mechanical parking mechanism is characterized by comprising a fixed frame, wherein a supporting shaft is fixedly arranged on the fixed frame, a sliding sleeve capable of moving along the axial direction of the supporting shaft is arranged on the supporting shaft, a friction disc capable of rotating is arranged on the outer peripheral wall of one end of the sliding sleeve, the friction disc and the sliding sleeve are coaxial, and a plurality of buffer units uniformly distributed along the circumferential direction are also arranged between the friction disc and the sliding sleeve; and the fixed frame is provided with a driving mechanism for driving the sliding sleeve to move.

2. The mechanical parking mechanism as claimed in claim 1, wherein a stepped hole is formed at a central position of the friction disc, the friction disc is formed with two first and second inner circumferential walls having different inner diameters by the stepped hole, the inner diameter of the second inner circumferential wall is smaller than that of the first inner circumferential wall, the second inner circumferential wall is nested on the sliding sleeve, and the inner diameter of the second inner circumferential wall is the same as the outer diameter of the sliding sleeve.

3. The mechanical parking mechanism as claimed in claim 2, wherein the buffer unit comprises a spring and two hinge columns fixedly arranged at two ends of the spring, wherein one of the hinge columns is fixedly arranged on the first inner peripheral wall through a hinge seat, the other hinge column is fixedly arranged on the outer peripheral wall of the sliding sleeve through a hinge seat, and the hinge columns are rotatably arranged on the hinge seat through hinge shafts; when the spring is compressed to the shortest distance, the vertical distance of the axes of the two articulated shafts in the same buffer unit is larger than the difference between the radius of the first inner peripheral wall and the radius of the outer peripheral wall of the sliding sleeve.

4. The mechanical parking mechanism according to claim 2 or 3, wherein the sliding sleeve is connected with the support shaft by a spline, a plurality of key slots evenly distributed along the circumferential direction are formed in the inner circumferential wall of the sliding sleeve, and external teeth matched with the key slots are arranged on the corresponding support shaft.

5. A mechanical parking mechanism as claimed in claim 4, wherein the support shaft is fixedly arranged in the mounting bracket by a plurality of support posts distributed uniformly in the circumferential direction.

6. The mechanical parking mechanism as claimed in claim 5, wherein the driving mechanism comprises a pushing cylinder fixed on the fixed frame and a pushing sleeve fixedly arranged on the telescopic end of the pushing cylinder, and the end of the pushing sleeve far away from the pushing cylinder is fixedly arranged on the sliding sleeve; the pushing sleeve is provided with a plurality of limiting grooves which correspond to the supporting columns one to one, and the supporting columns are connected with the limiting grooves in a sliding mode.

7. A mechanical parking mechanism as claimed in claim 6, wherein the surface of the sliding sleeve remote from the thrust cylinder is coplanar with the surface of the sliding sleeve remote from the thrust cylinder, and the surface of the friction disc remote from the thrust cylinder is provided with a plurality of evenly distributed protrusions.