CN213802558U

CN213802558U - Novel clamping mechanism

Info

Publication number: CN213802558U
Application number: CN202022678078.2U
Authority: CN
Inventors: 李高飞; 沈晨
Original assignee: Zf Foton Automatic Transmission Jiaxing Co ltd
Current assignee: Zf Foton Automatic Transmission Jiaxing Co ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-07-27
Anticipated expiration: 2030-11-18

Abstract

The utility model belongs to the field of machinery, a novel clamping mechanism is related to, including the base, locate the clamping jaw on this base and be used for driving the actuating mechanism of clamping jaw, its characterized in that: the driving mechanism is a linear driving device, a push rod is connected to a driving shaft of the driving device, the end portion of the push rod is provided with a conical portion with the lower end diameter smaller than the upper end diameter, at least two clamping jaws are arranged on the base, each clamping jaw is provided with a control end and a grabbing end, the control ends of the clamping jaws and the grabbing ends are hinged to the base, the control ends of the clamping jaws are arranged on the outer side of the conical portion, the grabbing ends of the clamping jaws are provided with grabbing portions, the clamping jaws are connected with a resetting device, and the resetting device enables the control ends of the clamping jaws to have a trend of being close to the side face of the conical portion. The utility model discloses a linear drive device axial drives the reciprocal action of ejector pin and realizes opening and shutting of clamping jaw, replaces traditional anchor clamps, improves the installation accuracy to convenient operation improves work efficiency.

Description

Novel clamping mechanism

Technical Field

The utility model belongs to the field of machinery, a be used for the tight mechanism of snap ring clamp is related to, especially, relate to a novel clamping mechanism.

Background

A transmission is a mechanism for changing the speed and torque from an engine, which can change the ratio of the output shaft to the input shaft, either fixed or in steps, also known as a gearbox. The transmission comprises a speed change transmission mechanism and an operating mechanism, when the transmission works, for example, when gear shifting operation is carried out, a clutch friction plate needs to be pushed by a cylinder piston to prevent the cylinder piston from jumping out of a shaft of the transmission, a snap ring needs to be arranged on the inner side of a shell of the transmission to press or open the shell in the axial direction, and in the process, the cylinder piston can generate jumping in the axial direction under the action of hydraulic oil to limit the cylinder. Thus, the quality of the snap ring installation directly affects the performance of the transmission.

Traditional snap ring carries out fixed mounting through the snap ring pincers, also has some producers to carry out the clamp of snap ring through mechanical fixture tightly, nevertheless all has the precision not enough, the problem that the installation effectiveness is low.

Disclosure of Invention

The present application is directed to solving the above problems by providing a novel clamping mechanism;

in order to achieve the above purpose, the utility model adopts the following technical proposal:

the application creatively provides a neotype clamping mechanism, including the base, locate the clamping jaw on this base and be used for driving the actuating mechanism of clamping jaw, its characterized in that: the driving mechanism is a linear driving device, a push rod is connected to a driving shaft of the driving mechanism, the end portion of the push rod is provided with a conical portion with the lower end diameter smaller than the upper end diameter, at least two clamping jaws are arranged on the base, each clamping jaw is provided with a control end and a grabbing end, the control ends of the clamping jaws and the grabbing ends are hinged to the base, the control ends of the clamping jaws are arranged on the outer side of the conical portion, the grabbing ends of the clamping jaws are provided with grabbing portions, the clamping jaws are connected with a resetting device, and the resetting device enables the control ends of the clamping jaws to have a trend of being close to the side face of the conical portion.

In the novel clamping mechanism, the base is provided with the positioning column, the axis of the positioning column coincides with the axis of the ejector rod, and the bottom end of the positioning column protrudes out of the bottom of the clamping jaw.

In the above-mentioned novel clamping mechanism, the bottom end of the positioning column has a positioning end with a diameter gradually decreasing from top to bottom.

In the above-mentioned novel clamping mechanism, the resetting device is an elastic element connecting the base and the clamping jaw.

In the above-mentioned novel clamping mechanism, the base has the outer cover body of locating the control end outside of clamping jaw, is equipped with the spring holder on this outer cover body, the control end lateral surface of clamping jaw has the spring groove, resetting means's both ends are connected respectively in corresponding spring holder and spring groove.

In the above-mentioned novel clamping mechanism, the gripping end of the gripping jaw is provided with a guide wheel, which abuts against the side surface of the tapered portion.

In the above-mentioned novel clamping mechanism, four clamping jaws are arranged on the base in an annular array along the circumference of the tapered portion.

In the above-mentioned novel clamping mechanism, the gripping part of each clamping jaw has a slot towards the inner side.

In the above-mentioned novel clamping mechanism, the end of snatching of clamping jaw has the mounting hole, snatch the portion for snatching the piece, the one end that should snatch the portion is connected with the dead lever fixed with the mounting hole cooperation, and the other end of snatching the portion is equipped with the draw-in groove.

In the above-mentioned novel clamping mechanism, the upper side of draw-in groove has to support to lean on the portion, the downside of draw-in groove has the inclined plane, and the tip on this inclined plane is less than with the draw-in groove concave surface distance on the horizontal direction support to lean on the portion and draw-in groove bottom distance on the horizontal direction.

Compared with the prior art, the utility model has the advantages of:

1) the utility model discloses a linear drive device axial drives the reciprocal action of ejector pin and realizes opening and shutting of clamping jaw, replaces traditional anchor clamps, improves the installation accuracy to convenient operation improves work efficiency.

2) The coaxiality of the installation of the clamping ring is further ensured through the positioning column.

3) The guide wheel makes rolling replace sliding, so that friction is reduced, and the action is smoother.

4) The clamping groove of the clamping jaw is designed, the clamping groove has better matching degree with the clamping ring, and the operation is more convenient and faster.

Drawings

Fig. 1 is a schematic cross-sectional structure provided in the present application.

Fig. 2 is a side view schematic diagram provided herein.

Fig. 3 is a partially enlarged view of fig. 1.

In the figure, a base 1, an outer sleeve 11, a spring seat 110, a driving clamping jaw 2, a control end 21, a spring groove 210, a grabbing end 22, a mounting hole 220, a grabbing part 23, a clamping groove 230, a fixing rod 231, an inclined surface 232, a guide wheel 24, a driving mechanism 3, a driving shaft 30, a mandril 4, a conical part 40, a resetting device 5, a positioning column 6 and a positioning end head 60 are arranged.

Detailed Description

Further illustrated by the following specific examples;

as shown in fig. 1 and 2, a novel clamping mechanism includes a base 1, a clamping jaw 2 disposed on the base 1, and a driving mechanism 3 for driving the clamping jaw 2, the driving mechanism 3 is a linear driving device, a driving shaft 30 of the driving mechanism 3 is connected with a push rod 4, and an end of the push rod 4 has a tapered portion 40 with a lower end diameter smaller than an upper end diameter. The lower end diameter of the tapered portion 40 is smaller than the upper end diameter, which means the end facing away from the drive shaft 30, and the upper end of the tapered portion 40 means the end connected to the drive shaft 30. The base 1 is provided with at least two clamping jaws 2, each clamping jaw 2 is provided with a control end 21 and a grabbing end 22, the control ends 21 and the grabbing ends 22 of the clamping jaws 2 are hinged to the base 1, the control ends 21 of the clamping jaws 2 are arranged on the outer side of the conical portion 40, the grabbing ends 22 of the clamping jaws 2 are provided with grabbing portions 23, the clamping jaws 2 are connected with a resetting device 5, and the resetting device 5 enables the control ends 21 of the clamping jaws 2 to have a tendency of approaching the side face of the conical portion 40. The utility model discloses a linear drive device axial drives 4 reciprocating motion realization clamping jaw 2 open and shut of ejector pin, replaces traditional anchor clamps, improves the installation accuracy to convenient operation improves work efficiency.

Specifically, four clamping jaws 2 are arranged on the base 1 in an annular array along the circumference of the conical portion 40. The included angle between two adjacent clamping jaw 2 central planes is 90 degrees, and four clamping jaws 2 are pairwise opposite, reach comparatively stable effect of snatching.

Further, the grabbing end 22 of the clamping jaw 2 expands outwards, an arched grabbing space is formed by two opposite clamping jaws 2, the grabbing end 22 of the clamping jaw 2 is provided with a mounting hole 220, the grabbing part 23 is a grabbing block, one end of the grabbing part 23 is connected with a fixing rod 231, the fixing rod 231 is in interference fit with the mounting hole 220, fasteners such as bolts or screws can be adopted for reinforcement, and the other end of the grabbing part 23 is provided with a clamping groove 230. The clamping grooves 230 of the clamping jaws 2 are located at the same horizontal position, and the clamping jaws 2 are ensured to correspond to the clamping rings.

The clamping jaw 2 is hinged with the base 1 through a rotating shaft to form a rotatable structure.

Referring to fig. 1 and 3, the upper side of the card slot 230 has an abutting portion 233, and the lower side of the card slot 230 has a slope 232, and a distance a between an end of the slope 232 and the concave surface of the card slot 230 in the horizontal direction is smaller than a distance b between the abutting portion 233 and the concave surface of the card slot 230 in the horizontal direction. The abutting portion 233 can apply acting force to the snap ring, and the inclined surface 232 can help the clamping jaw 2 to be separated from the snap ring after installation is completed and effective avoidance is formed in the snap ring installation process.

As shown in fig. 1 and 2, the gripping end 22 of the clamping jaw 2 is provided with a guide wheel 24, the guide wheel 24 can rotate around the axis direction, the guide wheel 24 abuts against the side surface of the conical part 40, and the ejector rod 4 moves to drive the guide wheel 24 to roll along the side surface of the conical part 40, so as to push the clamping jaw 2 to move. The rolling replaces the sliding, so that the friction force is reduced, and the action is smoother.

In order to further ensure the coaxiality of the installation of the clamping ring, a positioning column 6 is arranged on the base 1, the axis of the positioning column 6 is overlapped with the axis of the ejector rod 4, and the bottom end of the positioning column 6 protrudes out of the bottom of the clamping jaw 2 and is used for positioning with the center of the installation shaft. The bottom end of the positioning column 6 is provided with a positioning end 60 with a diameter gradually reduced from top to bottom, so that the positioning is more accurate.

The reset device 5 is an elastic element for connecting the base 1 and the clamping jaw 2. The base 1 is provided with an outer sleeve 11 arranged outside the control end 21 of the clamping jaw 2, the outer sleeve 11 is provided with a spring seat 110, the outer side surface of the control end 21 of the clamping jaw 2 is provided with a spring groove 210, and two ends of the resetting device 5 are respectively connected in the corresponding spring seat 110 and the spring groove 210. The elastic element is specifically a spring which is always in a compressed state and applies a pushing force close to the conical part 40 to the clamping jaw 2, so that the clamping jaw 2 is always kept in a state of being abutted against the side surface of the conical part 40 and is opened and closed along with the reciprocating motion of the conical part 40.

The drive mechanism 3 is preferably a cylinder or an oil cylinder.

The working principle of the utility model is as follows:

as shown in fig. 1 and fig. 2, the driving shaft 30 of the driving mechanism 3 moves downward along the axial direction, the driving shaft 30 drives the ejector rod 4 to move downward, the tapered portion 40 of the ejector rod 4 pushes the control end 21 of the clamping jaw 2 open, the control end 21 drives the grabbing end 22 to move closer to the axial direction of the ejector rod 4 through the rotating shaft, the clamping ring grabs and clamps on the mounting shaft through the clamping groove 230, after the mounting is completed, the driving shaft 30 of the driving mechanism 3 moves upward along the axial direction, the driving shaft 30 drives the ejector rod 4 to move upward, under the thrust action of the resetting device 5, the control end 21 of the clamping jaw 2 moves closer to the axial direction of the ejector rod 4 along with the tapered portion 40 of the ejector rod 4, and drives the grabbing end 22 to open outward through the rotating shaft, and the clamping jaw 2 is separated from the clamping ring.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms base 1, outer sleeve 11, spring seat 110, driving jaw 2, control end 21, spring groove 210, gripping end 22, mounting hole 220, gripping portion 23, clamping groove 230, fixing rod 231, inclined surface 232, abutting portion 233, guide wheel 24, driving mechanism 3, driving shaft 30, push rod 4, tapered portion 40, return device 5, positioning post 6, positioning head 60, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention and should not be interpreted as imposing any additional limitations that are contrary to the spirit of the present invention.

Claims

1. The utility model provides a novel clamping mechanism, includes base (1), locates clamping jaw (2) on this base (1) and is used for actuating drive mechanism (3) of clamping jaw (2), its characterized in that: actuating mechanism (3) are sharp drive arrangement, connect ejector pin (4) on drive shaft (30) of this actuating mechanism (3), and the tip of this ejector pin (4) has lower extreme diameter and is less than conical part (40) of upper end diameter, be equipped with two at least clamping jaws (2) on base (1), clamping jaw (2) have control end (21) and snatch end (22), articulate on base (1) between control end (21) of clamping jaw (2) and the snatching end (22), and control end (21) of clamping jaw (2) are located the outside of conical part (40), and the snatching end (22) of clamping jaw (2) have and snatch portion (23), and clamping jaw (2) are connected with resetting means (5), and this resetting means (5) make control end (21) of clamping jaw (2) have the trend of being close to conical part (40) side.

2. A novel clamping mechanism as claimed in claim 1, wherein: the clamping device is characterized in that a positioning column (6) is arranged on the base (1), the axis of the positioning column (6) is overlapped with the axis of the ejector rod (4), and the bottom end of the positioning column (6) protrudes out of the bottom of the clamping jaw (2).

3. A novel clamping mechanism as claimed in claim 2, wherein: the diameter of the bottom end of the positioning column (6) is smaller than that of the upper end, and a positioning end head (60) with the diameter gradually reduced from top to bottom is arranged.

4. A novel clamping mechanism as claimed in claim 1, wherein: the resetting device (5) is an elastic element for connecting the base (1) and the clamping jaw (2).

5. A novel clamping mechanism as claimed in claim 4, wherein: the base (1) is provided with an outer sleeve body (11) arranged on the outer side of a control end (21) of the clamping jaw (2), a spring seat (110) is arranged on the outer sleeve body (11), a spring groove (210) is formed in the outer side surface of the control end (21) of the clamping jaw (2), and two ends of the reset device (5) are connected to the corresponding spring seat (110) and the spring groove (210) respectively.

6. A novel clamping mechanism as claimed in claim 1, wherein: the gripping end (22) of the gripping jaw (2) is provided with a guide wheel (24), which guide wheel (24) abuts against the side face of the conical portion (40).

7. A novel clamping mechanism as claimed in claim 1, wherein: four clamping jaws (2) are arranged on the base (1) in an annular array along the circumferential direction of the conical part (40).

8. A novel clamping mechanism as claimed in claim 1, wherein: the grabbing part (23) of each clamping jaw (2) is provided with a clamping groove (230) towards one inner side end.

9. A novel clamping mechanism as claimed in claim 8, wherein: the grabbing end (22) of the clamping jaw (2) is provided with a mounting hole (220), the grabbing part (23) is a grabbing block, one end of the grabbing part (23) is connected with a fixing rod (231) which is matched and fixed with the mounting hole (220), and the other end of the grabbing part (23) is provided with a clamping groove (230).

10. A novel clamping mechanism as claimed in claim 8 or 9, wherein: the upper side of the clamping groove (230) is provided with an abutting part (233), the lower side of the clamping groove (230) is provided with an inclined plane (232), and the distance between the end part of the inclined plane (232) and the concave surface of the clamping groove (230) in the horizontal direction is smaller than the distance between the abutting part (233) and the concave surface of the clamping groove (230) in the horizontal direction.