CN211474795U

CN211474795U - Runway-shaped uniform reciprocating motion mechanism

Info

Publication number: CN211474795U
Application number: CN201922476992.6U
Authority: CN
Inventors: 王效贵; 林一帆; 刘世成; 杨辉; 许杨剑
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-11
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a runway-shaped uniform reciprocating motion mechanism, which comprises a large dovetail groove sliding table, a small dovetail groove sliding table, a runway-shaped inner gear frame, a gear shaft, a gear, a connecting rod connecting piece, a roller shaft and a limiting roller; the small dovetail groove sliding table and the large dovetail groove sliding table form a cross sliding table, and the track-shaped inner gear frame is in a track shape formed by two sections of semicircular gear rings and two sections of linear racks parallel to the sliding direction of the large dovetail groove sliding table; the utility model discloses utilize track ring gear and gear engagement's novel mechanism to realize continuous uniform velocity reciprocating motion, just can realize the transform of two kinds of motions with very simple transmission member, not only overcome the dead point problem, can satisfy the actual need of uniform motion moreover. The mechanism can be widely applied to other mechanical transmission occasions needing rotation and reciprocating motion conversion.

Description

Runway-shaped uniform reciprocating motion mechanism

Technical Field

The utility model relates to a motion especially relates to a can realize at uniform velocity reciprocating motion mechanism of runway shape.

Background

Need rotatory and the mechanical transmission occasion of reciprocating motion conversion many, but do not have the relevant report of continuous motion mechanism of simple structure and no dead point yet, to the weak point that prior art exists such as crank guide arm mechanism, screw mechanism, cam mechanism, the utility model discloses utilize runway shape ring gear and standard cylindrical gear meshed's novel mechanism to realize continuous uniform velocity reciprocating motion, it just can realize the transform of two kinds of motions with very simple transmission component, has not only overcome the dead point problem, can satisfy the actual need of uniform motion moreover. The success of the example test in which the gear ring was connected to the cross slide to drive the cross slide was verified that the mechanism functions effectively. The mechanism can also be widely applied to other mechanical transmission occasions requiring conversion of rotation and reciprocating motion.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can realize at uniform velocity reciprocating motion mechanism of runway shape.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a runway-shaped uniform reciprocating motion mechanism comprises a large dovetail groove sliding table, a small dovetail groove sliding table, a runway-shaped inner gear frame, a gear shaft, a gear, a connecting rod connecting piece, a roller shaft and a limiting roller; the bottom surface of the small dovetail groove sliding table is fixed on the sliding surface of the large dovetail groove sliding table, the sliding directions of the two sliding tables are perpendicular to form a cross sliding table, and the runway-shaped inner gear frame is fixed on the sliding surface of the small dovetail groove sliding table and is in a runway shape formed by two sections of semicircular gear rings and two sections of linear gear racks parallel to the sliding direction of the large dovetail groove sliding table;

the gear is arranged on the gear shaft and meshed with the inner gear frame, the gear shaft is driven to rotate by external force, the gear shaft is further provided with a connecting rod connecting piece, the gear shaft and the connecting rod connecting piece can only rotate relatively, a roller shaft is fixed on the connecting rod connecting piece, the lower end of the roller shaft is provided with a limiting roller, the gear is meshed with the runway-shaped inner gear ring, and meanwhile the limiting roller is attached to the outer ring of the runway-shaped inner gear frame to realize limiting.

The beneficial effects of the utility model reside in that:

the utility model discloses just can realize the transform of two kinds of motions with very simple transmission member, not only overcome the dead point problem, can satisfy the actual need at the uniform velocity motion moreover.

Drawings

Fig. 1 is an appearance schematic diagram of the present invention.

Fig. 2 is an external view of fig. 1 without the connecting rod connecting piece, the roller shaft and the limiting roller.

Fig. 3 is an appearance schematic diagram of the gear and the gear frame of the present invention engaged with each other.

In the figure: 1-big dovetail slipway, 2-backing plate, 3-limiting roller, 4-connecting rod connecting piece (left), 5-roller shaft nut, 6-roller shaft, 7-gear shaft, 8-connecting rod connecting piece (right), 9-gear frame, 10-gear shaft nut, 11-connecting piece bolt, 12-small dovetail slipway, 13-shaft collar, 14-thrust ball bearing and 15-sleeve.

Detailed Description

In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described 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):

referring to fig. 1 and 2, the gear on the gear shaft 7 is kept meshed with the gear frame 9 through the connecting rod connecting piece (left) 4, the connecting rod connecting piece (right) 8 and the limiting roller 3. The connecting rod connecting piece (left) 4 and the connecting rod connecting piece (right) 8 are installed outside the thrust ball bearing 14 and are fixedly connected into a whole so as to ensure that the connecting rod connecting piece and the gear shaft 7 only rotate relatively. The limiting idler wheel 3 is arranged on the connecting rod connecting piece (left) 4 through an idler wheel shaft 6 and an idler wheel shaft nut 5. Since the shaft end of the gear shaft 7 is threaded, the thrust ball bearing 14 is mounted on the gear shaft 7 via the sleeve 15 and is axially positioned by the collar 13 and the gear shaft nut 10. A cushion plate 2, a small dovetail groove sliding table 12 and a large dovetail groove sliding table 1 are arranged below the gear frame 9. The bottom surface of the small dovetail groove sliding table is fixed on the sliding surface of the large dovetail groove sliding table, the sliding directions of the two sliding tables are perpendicular to form a cross sliding table, and the runway-shaped inner gear frame is fixed on the sliding surface of the small dovetail groove sliding table and is in a runway shape formed by two sections of semicircular gear rings and two sections of linear gear racks parallel to the sliding direction of the large dovetail groove sliding table; the gear shaft 7 is driven by external force to rotate, and when a gear (a standard cylindrical gear) on the gear shaft 7 is meshed with the semicircular gear ring of the gear frame 9, the small dovetail groove sliding table 12 and the large dovetail groove sliding table 1 both perform uniform linear motion; when the gear on the gear shaft 7 is meshed with the rack section of the rack frame 9 in a linear way, the large dovetail groove sliding table 1 moves linearly at a constant speed, and the small dovetail groove sliding table 12 does not move. Therefore, when the gear rotates continuously, the sliding surface of the small dovetail groove sliding table can move back and forth at a track-shaped uniform speed.

Claims

1. A runway-shaped uniform reciprocating motion mechanism is characterized by comprising a large dovetail groove sliding table (1), a small dovetail groove sliding table (12), a runway-shaped inner gear frame (9), a gear shaft (7), a gear, a connecting rod connecting piece, a roller shaft (6) and a limiting roller (3); the bottom surface of the small dovetail groove sliding table (12) is fixed on the sliding surface of the large dovetail groove sliding table (1), the sliding directions of the two sliding tables are perpendicular to form a cross sliding table, and a runway-shaped inner gear frame (9) is fixed on the sliding surface of the small dovetail groove sliding table (12) and is in a runway shape formed by two sections of semicircular gear rings and two sections of linear racks parallel to the sliding direction of the large dovetail groove sliding table;

the gear is installed and is engaged with interior tooth frame on gear shaft (7), and gear shaft (7) are rotatory by external force drive, still install the connecting rod connecting piece on the gear shaft, and the two can only rotate relatively, is fixed with gyro wheel axle (6) on the connecting rod connecting piece, and spacing gyro wheel (3) are installed to the gyro wheel axle lower extreme, and the gear meshes with runway shape internal tooth frame inner circle, and spacing gyro wheel and the laminating of runway shape internal tooth frame outer lane are mutually realized spacingly simultaneously.