CN204267550U - There is long flexible short Hooks coupling universal coupling - Google Patents

Abstract

The utility model relates to the technical field of shaft couplings, and aims to provide a short universal shaft coupling with long expansion and contraction. Through-type structure, the cross shaft in the cross package assembly is a hollow structure; a spline shaft passes through the yoke of the spline sleeve and passes through the center hole of the cross shaft, and is fixed by the limit screw on the yoke of the spline sleeve. It is used as a limit and fixed to prevent the spline shaft from slipping out of the fork of the spline sleeve. Compared with the prior art, the utility model has a longer adjustment range and a wider application range; when the distance between the two spline sleeve fork heads is shortened to the minimum, the length of the entire coupling is also longer than that of any previous coupling. The length of the shaft adapter is short, which is suitable for equipment installation with a small shaft distance.

Description

Short cardan coupling with long telescoping

technical field

The utility model relates to the technical field of shaft couplings, in particular to a short-type universal shaft coupling with long telescoping.

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 cross shaft universal coupling with telescopic structure, as shown in Figure 1, includes two half couplings 01, four end face keys 02, two flange yokes 03, and two cross shaft package assemblies 04. Spline shaft yoke 05, limit screw 06, spline sleeve yoke 07 and bolt assembly 08, etc.; the above-mentioned cross shaft universal coupling has a fine-tuning effect on the axial length, that is, by adjusting The shaft yoke 05 protrudes into the depth position of the spline sleeve yoke 07, and the overall length of the coupling is appropriately increased or shortened 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, the traditional The main body of the cross shaft universal coupling with a telescopic structure is difficult to be placed therein, let alone installed.

Utility model content

The purpose of this utility model is to provide a short universal coupling with long expansion and contraction in view of the above-mentioned deficiencies in the prior art, so as to solve the problem that the distance between the ends of the two shafts is small and the universal coupling with long expansion and contraction is required. design issues.

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

A short universal joint with long telescopic features, including two spline sleeve yokes connected with the cross pack assembly, the spline sleeve yoke is a through-type structure, and the cross pack assembly The cross shaft is a hollow structure; a spline shaft passes through the yoke of the spline sleeve and passes through the center hole of the cross shaft, and is fixed by a limit screw on the yoke of the spline sleeve. prevent the spline shaft from slipping out of the spline sleeve yoke.

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

As a further improvement of the utility model, the spline shaft is provided with a limit stop ring for protection and fixing, so as to prevent the spline shaft from axially moving during operation.

As a further improvement of the present utility model, the spline sleeve yoke has a relatively short protrusion for fixing the spline shaft.

As a further improvement of the utility model, the spline sleeve yoke is connected to the flange yoke through the cross package assembly; the flange yoke is connected to the half coupling through a flange; the half coupling It is an interference fit with the connecting shaft.

As a further improvement of the utility model, the flange is provided with an end face key as a reinforced fixation.

As a further improvement of the utility model, the spline sleeve yoke is connected to the shaft sleeve yoke through the cross pack assembly; the shaft sleeve yoke is in clearance fit with the connecting shaft.

Compared with the prior art, the utility model has a longer adjustment range and a wider application range; when the distance between the two spline sleeve forks is shortened to the minimum, the length of the entire coupling is also longer than that of any previous coupling. The length of the shaft adapter is short, which is suitable for equipment installation with a small shaft distance.

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.

Fig. 5 is a perspective view of the cross shaft of the present invention.

Fig. 6 is another structural schematic diagram of the utility model.

FIG. 7 is a schematic diagram of the structure of FIG. 6 after contraction.

Fig. 8 is a schematic diagram of the third structure of the utility model.

FIG. 9 is a schematic diagram of the structure of FIG. 8 after contraction.

In Figure 1: 01 half coupling; 02 end key; 03 flange fork; 04 cross shaft assembly; 05 spline shaft fork; 06 limit screw; 07 spline sleeve fork; 08 bolt assembly;

Other figures: 1 half coupling; 2 end face key; 3 flange fork; 4 cross shaft assembly; 4-1 cross shaft; 5 spline sleeve fork; 6 limit screw; 7 spline shaft; 8 Bolt assembly; 9 limit retaining ring; 10 sleeve fork.

Detailed ways

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

The first structure schematic diagram of the utility model as shown in Figure 2, the structure when Figure 3 is its shrinkage state, Figure 4 is its perspective view; The spline sleeve yoke 5 is composed of the spline sleeve yoke 5, which is a through-type structure. The cross shaft 4-1 in the cross package assembly 4 is also a hollow structure as shown in Figure 5; see Figure 3, there is a spline The shaft 7 passes through the spline sleeve yoke 5 and passes through the center hole of the cross shaft 4-1. The spline sleeve yoke 5 can move along the axial direction of the spline shaft 7, so as to meet the requirements of different shaft end distance installation and Requirements for disassembly; the limit screw 6 on the spline sleeve yoke 5 is used to limit and fix the spline shaft 7, so as to prevent it from slipping out from the spline sleeve yoke 5; A fixed stop ring 9 prevents the axial movement of the spline shaft 7 during operation.

The first structure of the utility model is suitable for occasions where the shaft heads at both ends are in interference fit with the half-coupling. The spline sleeve yoke 5 is connected to the flange yoke 3 through the cross package assembly 4; the flange yoke 3 is connected to the half coupling 1 through the flange 8; the flange 8 is provided with an end face key 2 as Reinforce the fixation; the half coupling 1 and the connecting shaft are interference fit.

Fig. 6 and Fig. 7 are the second structure diagrams of the present invention, which are suitable for the occasion where the shaft heads at both ends are in clearance fit with the half coupling. In the figure, the spline sleeve yoke 5 is connected with the shaft sleeve yoke 10 through the cross package assembly 4; the shaft sleeve yoke 10 and the connecting shaft are clearance fit.

Fig. 8 and Fig. 9 are the third structural diagrams of the present invention, which are suitable for the occasions where the shaft head at one end is in interference fit with the coupling half, and the shaft head at the other end is in clearance fit with the coupling half. The above three structures can realize quick disassembly and assembly of the universal joint.

In addition, the spline sleeve yoke 5 of the present invention has a relatively short protruding portion for fixing the spline shaft 7, so the body length of the coupling can be greatly reduced to adapt to the installation space of a small shaft distance.

Finally, it should be noted that the above examples are only three specific embodiments 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 (7)

1. A short type universal joint with long expansion and contraction, comprising two spline sleeve yokes (5) connected with the cross pack assembly (4), it is characterized in that the spline sleeve yoke (5) is a through-type structure, and the cross shaft (4-1) in the cross pack assembly (4) is a hollow structure; a spline shaft (7) runs through the spline sleeve fork (5) from The cross shaft (4-1) passes through the central hole, and is fixed by the limit screw (6) on the spline sleeve fork (5) to prevent the spline shaft (7) from The spline sleeve yoke (5) slides out. 2. The long telescopic short universal joint according to claim 1, characterized in that the spline sleeve yoke (5) can move axially along the spline shaft (7), To meet the needs of installation and disassembly of different shaft end distances. 3. The long telescopic short universal joint according to claim 2, characterized in that, the spline shaft (7) is provided with a stop ring (9) for protection and fixing, so as to The axial movement of the spline shaft (7) during operation is prevented. 4. The long and telescopic short universal joint according to claim 1, characterized in that, the spline sleeve yoke (5) has a protrusion for fixing the spline shaft (7). 5. The long telescopic short universal joint according to claim 1, characterized in that the spline sleeve yoke (5) is connected to the flange yoke (3) through the cross package assembly (4) ) are connected; the flange fork (3) is connected with the half coupling (1) through the flange (8); the half coupling (1) is an interference fit with the connecting shaft. 6. The long-telescopic short universal joint according to claim 5, characterized in that, the flange (8) is provided with an end face key (2) as a reinforcing fixation. 7. The long and telescopic short universal joint according to claim 1, characterized in that, the spline sleeve yoke (5) passes through the cross pack assembly (4) and the shaft sleeve yoke (10) link to each other; Described axle sleeve yoke (10) is clearance fit with connecting shaft.