CN204127145U - There is long flexible double-deck spline Hooks coupling universal coupling - Google Patents

Abstract

The utility model relates to the technical field of shaft couplings, and aims to provide a double-layer spline universal coupling with long expansion and contraction. The shaft yoke can extend into the spline sleeve yoke, and also includes a hollow spline shaft; the hollow hole of the hollow spline shaft and the protruding end of the spline shaft yoke form a spline pair, and the hollow The outer circle of the spline shaft and the inner circle of the fork of the spline sleeve also form a spline pair to transmit torque together. Compared with the prior art, the utility model has a longer adjustment range and wider application range; when the fork head of the spline shaft and the hollow spline shaft shrink to the shortest at the same time, the length of the entire coupling also obtains the shortest length , suitable for equipment installation with small interaxial spacing.

Description

Double-layer spline universal coupling with long telescopic

technical field

The utility model relates to the technical field of shaft couplings, in particular to a double-layer spline universal shaft coupling with long stretching.

Background technique

The cross-shaft universal coupling is the most commonly used coupling. Using its structural characteristics, it can make two shafts that are not on the same axis or have a large bending angle or a large axial movement continue to rotate at the same angular speed, and it is reliable. Therefore, it can be widely used in the transmission of torque and motion in the mechanical shafting of lifting, engineering transportation, mining, petroleum, shipbuilding, coal, rubber, paper machinery and other heavy machinery industries.

The traditional telescopic cross shaft universal coupling, as shown in Figure 1, includes two flange yokes 01, two cross package assemblies 02, spline shaft yoke 03, limit screw 04, and Spline sleeve yoke 05, etc.; the above-mentioned cross shaft universal coupling has a fine-tuning effect on the axial length, that is, by adjusting the depth position where the spline shaft yoke 03 extends into the spline sleeve yoke 05, the appropriate Properly increase or shorten the overall length of the coupling to achieve the purpose of matching the end distance between the two shafts.

However, when the distance between the ends of the two shafts is too small, the adjustment structure of the above-mentioned cross shaft universal coupling has limitations and cannot adapt to a wide range of equipment adjustments; especially when installing a very short shaft distance, it is impossible to design If it has a telescopic structure or the telescopic amount is too small, it cannot meet the needs of the equipment, which brings a lot of inconvenience to the installation and adjustment of the universal coupling.

Utility model content

The purpose of this utility model is: aiming at the deficiencies of the prior art above, to provide a double-layer spline universal coupling with long expansion and contraction, so as to solve the problem that the distance between the two shaft ends is small and the universal joint with long expansion and contraction is required. Shaft design issues.

The technical scheme adopted for realizing the above-mentioned purpose of the utility model is:

A double-layer spline universal coupling with long telescopic features, including cross pack assembly I, cross pack assembly II and spline shaft yoke, the spline shaft yoke can extend into the spline sleeve yoke, It also includes a hollow spline shaft; the hollow hole of the hollow spline shaft and the protruding end of the spline shaft fork form a spline pair, and the outer circle of the hollow spline shaft and the spline sheath fork The inner circle of the head also forms a spline pair, which transmits the torque of the connecting shaft together.

As a further improvement of the utility model, the spline shaft yoke, the hollow spline shaft and the spline sleeve yoke can all move in the axial direction, so as to meet the needs of installation and disassembly of different shaft end distances.

As a further improvement of the present utility model, a limit screw is provided on the yoke of the spline sleeve to prevent the hollow spline shaft from slipping out of the yoke of the spline sleeve.

As a further improvement of the utility model, the hollow spline shaft is provided with a stop ring II as a fixed protection to prevent the hollow spline shaft from shifting into the fork of the spline sleeve during movement.

As a further improvement of the present invention, the spline shaft yoke is provided with a limit stop ring I as a fixed protection to prevent the hollow spline shaft from moving outside the spline sleeve yoke during movement.

Compared with the prior art, the utility model has a longer adjustment range and a wider application range; when the spline shaft fork and the hollow spline shaft shrink to the shortest at the same time, the length of the entire coupling also gets the shortest length , suitable for equipment installation with small interaxial spacing.

Description of drawings

Figure 1 is a schematic diagram of the working state structure of a traditional universal joint.

Fig. 2 is a structural schematic diagram of the utility model.

FIG. 3 is a schematic diagram of the structure of FIG. 2 after contraction.

Fig. 4 is a three-dimensional structure diagram of the utility model.

In Figure 1: 01 flange fork; 02 cross package assembly; 03 spline shaft fork; 04 limit screw; 05 spline sleeve fork;

In Fig. 2: 1 flange yoke Ⅰ; 2 cross package assembly Ⅰ; 3 spline shaft yoke; 4 limit retaining ring Ⅰ; 5 hollow spline shaft; 6 limit retaining ring Ⅱ; 7 limit screw; 8 spline sleeve fork head; 9 cross bag assembly II; 10 flange fork head II.

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Fig. 2 and Fig. 4, the two ends of the double-layer spline universal coupling with long expansion and contraction of the utility model are still the traditional universal coupling parts, that is, the cross pack assembly I2 and the cross pack assembly respectively. into Ⅱ9; cross pack assembly Ⅰ2 and cross pack assembly Ⅱ9 are connected to the external connecting shaft through flange yoke Ⅰ1 and flange yoke II 2 respectively; spline shaft yoke 3 can extend into the spline sleeve Adjust the distance when the two ends are connected to the shaft in the fork 8 .

The inventive point of the present utility model is: a hollow spline shaft 5 parts are added between the spline shaft fork 3 and the spline sleeve fork 8, so that the hollow hole of the hollow spline shaft 5 and the spline shaft fork The stretching end of 3 forms a spline pair, and the outer circle of the hollow spline shaft 4 and the inner circle of the spline sleeve yoke 8 also form a spline pair, and jointly transmit torque.

The spline shaft yoke 3, the hollow spline shaft 4 and the spline sleeve yoke 7 can all move axially to meet the needs of installation and disassembly of different shaft end distances. Figure 3 shows the structure at the shortest stretching time.

The utility model sets a limit screw 7 on the spline sleeve yoke 8 to prevent the hollow spline shaft 5 from slipping out of the spline sleeve yoke 8; a limit stop ring II 6 is set on the hollow spline shaft 5 as a fixed protection , to prevent the hollow spline shaft 5 from moving into the spline sleeve yoke 8 during movement; a limit retaining ring Ⅰ4 is set on the spline shaft yoke 3 as a fixed protection to prevent the hollow spline shaft 5 from moving toward the spline sleeve yoke during movement. The key cover fork 8 moves outside.

Finally, it should also be noted that what is listed above is only a specific embodiment of the present invention. Apparently, the utility model can have many variations, and all the variations that can be derived or associated directly from the disclosed content of the utility model by those skilled in the art should be considered as the protection scope of the utility model.

Claims (5)

1. one kind has long flexible double-deck spline Hooks coupling universal coupling, comprise cross bag assembly I (2), cross bag assembly II (9) and spline shaft yoke (3), described spline shaft yoke (3) can stretch in spline slip yoke (8), it is characterized in that, also comprise a hollow splined shaft (5); The hollow hole of described hollow splined shaft (5) and the inserting end of described spline shaft yoke (3) form spline pair, the cylindrical of described hollow splined shaft (4) and the interior fenestra of described spline slip yoke (8) form spline pair, common transmitting torque.

2. according to claim 1 have long flexible double-deck spline Hooks coupling universal coupling, it is characterized in that, described spline shaft yoke (3), hollow splined shaft (4) and spline slip yoke (7) all can move vertically, with the needs of satisfied different axle head apart from installation and removal.

3. according to claim 1 and 2 have long flexible double-deck spline Hooks coupling universal coupling, it is characterized in that, described spline slip yoke (8) is provided with stop screw (7), prevents described hollow splined shaft (5) from skidding off from spline slip yoke (8).

4. according to claim 3 have long flexible double-deck spline Hooks coupling universal coupling; it is characterized in that; described hollow splined shaft (5) is provided with a spacing back-up ring II (6) as fixing protection, prevents described hollow splined shaft (5) at the volley to spline slip yoke (8) interior play.

5. according to claim 3 have long flexible double-deck spline Hooks coupling universal coupling; it is characterized in that; described spline shaft yoke (3) is provided with a spacing back-up ring I (4) as fixing protection, prevents described hollow splined shaft (5) at the volley to spline slip yoke (8) outer play.