CN104819260A - Tilt angle-adjustable space crank rocker mechanism - Google Patents

Abstract

The present invention is a space crank and rocker mechanism with adjustable swing angle, which includes an extension shaft, a bracket, an extension shaft lock nut, a front shaft, a chain, a front chain transmission group, a drive shaft, a middle shaft, and a rear chain transmission group , steering shaft, left joint bearing, lock nut, connecting rod, right joint bearing, adjustable crank slider, crank groove, nut, driven gear, driving gear, characterized in that: the steering shaft and the bracket constitute the first A rotating pair, the front shaft and the bracket constitute the second rotating pair, the driving shaft is equipped with a driving gear meshing with a driven gear, and the power is transmitted to the central shaft, and the rear chain drive is assembled on the central shaft, and the power is transmitted through the chain It is transmitted to the front chain transmission group, the front chain transmission group and the crank groove are installed on the front axle, the transmission ratio is changed by changing the position of the chain, and the length of the adjustable crank, connecting rod and adjustable steering extension shaft is used to control the steering Shaft swing angle size. This mechanism is suitable for production lines that frequently change product models.

Description

A space crank-rocker mechanism with adjustable swing angle

technical field

The invention relates to a space crank-rocker mechanism with adjustable swing angle, specifically a transmission mechanism for adjusting the transmission ratio and swing angle of a machining production line according to product requirements.

Background technique

At present, the production line of processing machinery often needs a swing mechanism. The general swing mechanism mainly operates according to a fixed cycle, and the transmission ratio is fixed. It is impossible to change the swing angle of the mechanism at any time according to the difference with the product model. Various swing angles are available to meet specific production and processing requirements.

Contents of the invention

Aiming at the technical problems in the prior art, the present invention provides a space crank-rocker mechanism with adjustable swing angle which is convenient to manufacture, maintain and adjust.

The technical solution adopted by the present invention to solve the technical problem is a space crank-rocker mechanism with adjustable swing angle. The driving shaft is equipped with a driving gear meshing with a driven gear, and the power is transmitted to the central shaft. The chain transmission is assembled on the center shaft, and the power is transmitted to the front chain transmission group through the chain transmission. The front chain transmission group and the crank groove are installed on the front axle. By adjusting the transmission ratio of the sprocket, the crank and the Adjust the length of the connecting rod and the adjustable steering extension shaft to control the swing angle.

Further, the chain realizes various transmission ratios on different chain transmission groups, and the chain transmission groups are designed in the shape of two groups of pagodas arranged in positive and negative directions, and the transmission ratio can be changed by exchanging the transmission of a group of sprockets.

Further, the adjustment position of the crank slider in the crank groove is changed to change the radius of rotation of the crank to control the maximum amplitude of the swing of the rotating shaft, and the crank slider is pressed against the crank groove by a nut.

Further, the crank slider is connected to a joint bearing, and the steering extension shaft is connected to another joint bearing, and the two joint bearings are connected by a connecting rod with a left thread at one end and a right thread at the other end, The length of the connecting rod can be adjusted by rotating the connecting rod in a single direction, and after the length of the connecting rod is adjusted, the position is locked by the locking nut.

The entire mechanism of the present invention changes the transmission ratio by adjusting the position of the chain transmission in the front and rear chain transmission groups, and can change the total length of the connecting rod by adjusting the position of the slider in the crank groove and rotating the connecting rod in a single direction. To achieve the effect of micro-adjusting the swing angle.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is the schematic diagram of overall transmission mechanism device of the present invention;

Fig. 2 is a schematic diagram of a linkage mechanism of the present invention;

Among them: 1. Steering extension shaft, 2. Left joint bearing, 3. Connecting rod, 4. Lock nut, 5. Nut, 6. Right joint bearing, 7. Adjustable crank slider, 8. Crank groove, 9, central shaft, 10, driven gear, 11, driving gear, 12, driving shaft, 13, rear chain transmission group, 14, chain, 15, front chain transmission group, 16, front axle, 17, bracket, 18, Extend the axle locknut.

Detailed ways

The invention will be further described in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams only illustrating the basic structure of the invention in a schematic way, and therefore only show the components relevant to the invention.

As shown in Figures 1 to 2, a space crank rocker mechanism with adjustable swing angle, the driving gear 11 is installed on the driving shaft 12, the driving gear 11 meshes with the driven gear 10, and the driven gear 10 and the rear chain drive Group 13 is fixedly installed on the central shaft in the circumferential direction, and the chain 14 is used for transmission between the rear chain transmission group 13 and the front chain transmission group 15. The crank groove 8 and the front chain transmission group 15 are installed on the front axle 16, and the crank slider can be adjusted 7 is installed in the crank groove 8, the adjustable crank slider 7 is connected with the right joint bearing 6, the right joint bearing 6 is connected with the left joint bearing 2 through the connecting rod 3, and the other end of the left joint bearing 2 is connected with the steering extension shaft 1 , thereby driving the steering extension shaft 1 to move back and forth in a determined swing angle.

As shown, the chain 14 realizes adjusting the transmission ratio by being sleeved on different chain transmission groups, and the chain transmission group is designed to be arranged in the shape of two groups of pagodas of different sizes through a chain 14 to obtain different transmission ratios.

By adjusting the position of the crank slider 7 in the crank groove 8 and thereby changing the radius of rotation of the crank, the maximum amplitude of the swing of the rotating shaft is controlled. The crank slider 7 is fixed on the crank groove 8 by a nut 5 .

As shown in Figure 2, the crank slider is connected to a right joint bearing 6, and the steering extension shaft is connected to a left joint bearing 2, and a connecting rod 3 with one end being a left thread and the other end being a right thread is passed between the two joint bearings. In connection with each other, the overall length of the connecting rod can be adjusted by rotating the connecting rod 3 in a single direction, and is locked by the locking nut 4 .

When the production line adjusts the swing angle of the swing mechanism according to different product needs, the position of the chain 14 in the sprocket group can be changed according to production requirements, and the position of the adjustable crank slider 7 in the crank groove 8 can be adjusted at the same time, and the position of the connecting rod 3 can be fine-tuned. The length and the length of the steering extension shaft 1 get final product.

It should be noted that the above-mentioned implementation is a preferred embodiment of the present invention, and is not used to limit the protection scope of the present invention. The equivalent replacements or substitutions made on the above-mentioned basis all belong to the protection scope of the present invention, and the protection scope of the present invention The claims shall prevail.

Claims (2)

1. the spatial crank-rocker mechanism of an adjustable pivot angle, working principle is: the driving gear (11) be connected with driving shaft (12) drives driven gear (10), again by coaxial front Chain conveyer group (15) and rear Chain conveyer group (13), the chain (14) of diverse location can change velocity ratio, change in the position of crank pit (8) amplitude of fluctuation turning to projecting shaft by regulating crank block (7), in addition, swivel link (3) intermediate portion realizes the change of length of connecting rod, simultaneously, left and right adjusting turns to the length of projecting shaft (1) to control swing position, to realize the amplitude size turning to projecting shaft (1) to swing.

2. as claimed in claim 1, a kind of spatial crank-rocker mechanism of adjustable pivot angle is characterized in that: comprise and turn to projecting shaft (1), left joint shaft bearing (2), connecting rod (3), locking nut (4), nut (5), right joint shaft bearing (6), adjustable crank block (7), crank pit (8), axis (9), driven gear (10), driving gear (11), driving shaft (12), rear Chain conveyer group (13), chain (14), front Chain conveyer group (15), front axle (16), support (17), projecting shaft locking nut (18).It is characterized in that: described in turn to projecting shaft (1) and support (17) to form the first revolute pair, described turn to projecting shaft (1) can on support adjusted position, and be fixed with described projecting shaft locking nut (18), one end of described projecting shaft locking nut (18) is connected with described left joint shaft bearing (2), left joint shaft bearing (2) the other end and connecting rod (3) one end are connected to form screw pair, the other end and the right joint shaft bearing (6) of connecting rod form screw pair, right joint shaft bearing (6) the other end is connected with described adjustable crank slide block (7), the position-adjustable of adjustable crank slide block (7) in described crank pit (8), and be fixed with described nut (5), adjustable crank slide block (7) and described front axle (16) are fixed as one, front axle (16) and support (17) form the second revolute pair, described front Chain conveyer group (15) is arranged on front axle (16), driving shaft is equipped with described driving gear (11) to engage with the described driven gear (10) on axis (16).