CN106090040A - A coupling that can adjust the length - Google Patents

Abstract

The invention discloses a coupler with adjustable length, which relates to the field of couplers and comprises a first half coupler and a second half coupler, wherein the second half coupler is arranged opposite to the first half coupler, the first half coupler is connected with the second half coupler through a spline shaft, a first positioning screw rod for positioning a spline shaft is arranged on the first half coupler, and a second positioning screw rod for positioning the spline shaft is arranged on the second half coupler. Because the spline shaft is additionally arranged, the length of the coupler is adjusted by adjusting the relative positions of the spline shaft and the first half coupler and the second half coupler, so that the aim of connecting two concentric shafts with different distances is fulfilled.

Description

A coupling that can adjust the length

technical field

The invention relates to the field of shaft couplings, in particular to a shaft coupling whose length can be adjusted.

Background technique

As a connecting device connecting the drive shaft and the driven shaft on the same axis, the shaft coupling has been widely used in mechanical equipment due to its reliable connection and torque transmission effect. The shaft coupling in the prior art has Directly connected by bolts, some connected by additional clamping devices, and some connected by gears to achieve torque transmission, but in the above-mentioned prior art, only concentric shafts with a certain relative distance can be connected, and the connection range cannot be realized at the axis center to adjust. Due to the fact that when the actual mechanical equipment is installed, there will be deviations in the positioning of the machine base, which will cause the distance between the drive shaft and the driven shaft after the mechanical equipment is installed to be different from the design distance, which will eventually cause the coupling to be installed weakly or Unable to install the problem.

Contents of the invention

The purpose of the present invention is to provide a shaft coupling with adjustable length, which is used to solve the problem that the shaft coupling in the prior art cannot achieve reliable connection when the distance between the driving shaft and the driven shaft axis changes.

The present invention realizes through following technical scheme:

A coupling that can be adjusted in length, including a first half coupling and a second half coupling, the second half coupling is installed opposite to the first half coupling, and the first half coupling The device is connected to the second half-coupling through a spline shaft, the first half-coupling is provided with a first positioning screw for positioning the spline shaft, and the second half-coupling is provided with a spline for positioning Second set screw for shaft.

Preferably, a spring washer is provided between the first half-coupling and the first positioning screw, and a second spring washer is provided between the second half-coupling and the second positioning screw.

Preferably, one end of the first half-coupling connected to the spline shaft is provided with a first flange with a plurality of through holes, and one end of the second half-coupling close to the first half-coupling is provided with a belt The second flange has a plurality of threaded holes, the positions of the threaded holes correspond to the through holes, and a connecting screw is arranged in the through hole, and the connecting screw passes through the through hole and is connected with the threaded hole.

Preferably, one end of the first half-coupling connected to the spline shaft is a spline hole, and the other end is a mounting shaft hole, the inner wall of the mounting shaft hole is smooth, and the inner wall of the mounting shaft hole is provided with a keyway, The spline shaft that can slide in the spline hole is installed in the spline hole, and the structure of the second half coupling is corresponding to that of the first half coupling.

Compared with the prior art, the present invention has the following advantages and beneficial effects:

(1) Since the spline shaft is added in the present invention, the length adjustment of the coupling can be realized by adjusting the relative positions of the spline shaft and the first half coupling and the second half coupling, so as to achieve the connection between two shafts with different distances. The purpose of the root concentric shaft.

(2) Since the direction of the keyway of the spline shaft is set axially and the torque transmission is radial rotation, the present invention can realize stable and reliable torque transmission at any point in the adjustable range.

Description of drawings

Fig. 1 is the connection structure schematic diagram of the present invention;

Fig. 2 is the left side view of the first coupling half;

Fig. 3 is the right side view of the first half coupling;

Among them, 1-first half coupling; 1a-through hole; 1b-keyway; 1c-spline hole; 1d-installation shaft hole; 2-spline shaft; 3-second half coupling; 3a-threaded hole ; 4-the first positioning screw; 4a-the first spring washer; 5-the second positioning screw; 5a-the second spring washer; 6-connecting screw.

detailed description

The present invention will be further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

Example:

As shown in the accompanying drawings 1-3, a shaft coupling that can be adjusted in length includes a first half coupling 1 and a second half coupling 3, and the second half coupling 3 is connected to the first half coupling. The shaft coupling 1 is relatively installed, and the first half coupling 1 is connected to the second half coupling 3 through the spline shaft 2, and the first half coupling 1 is provided with a first shaft for positioning the spline shaft 2. The positioning screw 4, the second half coupling 3 is provided with a second positioning screw 5 for positioning the spline shaft 2.

In the embodiment, a spring washer 4a is provided between the first half-coupling 1 and the first positioning screw 4, and a second spring washer is provided between the second half-coupling 3 and the second positioning screw 5 5a.

In the embodiment, one end of the first half coupling 1 connected to the spline shaft 2 is provided with a first flange with a plurality of through holes 1a, and the second half coupling 3 is close to the first half coupling One end of the device 1 is provided with a second flange with a plurality of threaded holes 3a, the threaded holes 3a correspond to the position of the through hole 1a, and a connecting screw 6 is also arranged in the through hole 1a, and the connecting screw 6 6 connects through the through hole 1a to the threaded hole 3a.

In the embodiment, one end of the first half-coupling 1 connected to the spline shaft 2 is a spline hole 1c, and the other end is a mounting shaft hole 1d, the inner wall of the mounting shaft hole 1d is smooth, and the mounting shaft hole A key groove 1b is provided on the inner wall of 1d, and the spline shaft 2 that can slide in the spline hole 1c is installed in the spline hole 1c, and the structure of the second half coupling 3 is the same as that of the first half coupling. The structure of the shaft device 1 is set correspondingly.

working principle:

Install the spline shaft 2 between the first half coupling 1 and the second half coupling 3, and then reliably connect the two ends of the coupling with the drive shaft and driven shaft to be connected respectively, and adjust the spline shaft 2, so that it is located in the middle of the first half coupling 1 and the second half coupling 3, tighten the first positioning screw 4 and the second positioning screw 5 respectively, and connect the spline shaft 2 and the first half coupling The relative position of the coupling 1 and the second coupling half 3 is determined to realize the transmission of torque between the drive shaft and the driven shaft.

Further, in order to achieve the reliability of the coupling, the flanges provided at one end of the first half coupling 1 and the second half coupling 3 are connected through the through hole 1 a and the threaded hole 3 a by using the connecting screw 6 .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Any simple modifications and equivalent changes made to the above embodiments according to the technical essence of the present invention all fall within the scope of the present invention. within the scope of protection.

Claims (3)

1. A coupling that can be adjusted in length, including a first half coupling (1) and a second half coupling (3), the second half coupling (3) and the first half coupling The device (1) is relatively installed, and it is characterized in that the first half coupling (1) is connected to the second half coupling (3) through a spline shaft (2), and the first half coupling (1 ) is provided with a first positioning screw (4) for positioning the spline shaft (2), and the second half-coupling (3) is provided with a second positioning screw (5) for positioning the spline shaft (2) ). 2. A shaft coupling that can be adjusted in length according to claim 1, characterized in that a spring washer (4a) is arranged between the first half coupling (1) and the first positioning screw (4) ), a second spring washer (5a) is arranged between the second half-coupling (3) and the second positioning screw (5). 3. The length-adjustable shaft coupling according to claim 2, characterized in that, one end of the first half coupling (1) connected to the spline shaft (2) is provided with a plurality of through holes The first flange of (1a), the second half-coupling (3) is provided with a second flange with a plurality of threaded holes (3a) near one end of the first half-coupling (1), The threaded hole (3a) corresponds to the position of the through hole (1a).