Swing head with hinged flexible shaft

Abstract

The application provides a swing type operation head with a hinged flexible shaft, which comprises a device body, a swing arm, an operation head, a driving shaft base and a flexible shaft, wherein the flexible shaft is hinged on the driving shaft base through a flexible shaft mounting base. The application can avoid extra resistance caused by constant flexible shaft mounting angle when the swing arm moves, so that the swing arm rotates more flexibly.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of garden, engineering and agricultural machinery, and specifically discloses a swing type working head with a hinged flexible shaft. BACKGROUND

[0002] In the field of agriculture, especially in fruit tree planting areas, the demand for obstacle avoidance mowers is increasing. However, when the working height and angle of the obstacle avoidance cutter head need to be adjusted separately, only a separate power source, such as a hydraulic motor or an electric motor, can be used, which results in high cost and high price, thereby restricting the further popularization and application of such machinery. If a flexible shaft with both ends fixedly connected is directly used, the angle of the flexible shaft will change continuously when the obstacle avoidance cutter head swings, which will cause a certain reverse torque in the flexible shaft and reduce the flexibility of the obstacle avoidance cutter head.

[0003] Similarly, in other tool and machinery fields where the working head needs to swing regularly without manual operation, such a solution is also needed. SUMMARY

[0004] The present application provides a swing type working head with a hinged flexible shaft, which comprises a device body, a swing arm, a working head, a driving shaft seat, a flexible shaft and a flexible shaft mounting seat, wherein the flexible shaft is hinged to the driving shaft seat through the flexible shaft mounting seat. The present application can avoid the additional resistance caused by the constant angle of the flexible shaft during the movement of the swing arm, so that the swing arm rotates more flexibly.

[0005] The swing type working head with a hinged flexible shaft provided by the present application comprises a device body, a swing arm, a working head, a driving shaft seat, a flexible shaft mounting seat and a flexible shaft. The structure is as follows:

[0006] One end of the swing arm is hinged to the device body.

[0007] The driving shaft seat is installed at the other end of the swing arm and is provided with the working head at one end of the driving shaft seat.

[0008] The flexible shaft is hinged to the other end of the driving shaft seat through the flexible shaft mounting seat.

[0009] One end of the flexible shaft is installed in the flexible shaft mounting seat, and the other end is connected to a power source on the device body.

[0010] Further, the connection between the flexible shaft mounting seat and the driving shaft seat is a rotary connection.

[0011] Further, the included angle between the input end and the output end of the flexible shaft mounting seat is not equal to 180 degrees.

[0012] Further, the soft shaft mounting seat is a gear box with a pair of bevel gears inside.

[0013] Further, the soft shaft mounting seat and the driving shaft seat are connected with locking and limiting devices in the rotation direction of the soft shaft mounting seat.

[0014] Further, the locking and limiting devices are push-pull wire rods and a pair of limiting blocks. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a perspective view of the present application.

[0016] Figure 2 is a partial assembly exploded view of the soft shaft mounting seat of the present application.

[0017] Figure 3 is a partial perspective view of the soft shaft mounting seat of the present application. DETAILED DESCRIPTION

[0018] The essential features and advantages of the present application will be further illustrated below in connection with examples, but the present application is not limited to the listed examples.

[0019] Referring to Figure 1 , the swing arm 1 is hingedly connected to the device body 2 at one end.

[0020] The driving shaft seat 3 is mounted at the other end of the swing arm and is provided with a mowing head 4 at one end of the driving shaft seat.

[0021] The soft shaft 5 is mounted at one end to the soft shaft mounting seat 6 and is connected at the other end to a power source on the device body.

[0022] The soft shaft mounting seat 6 is hingedly connected to the top end of the driving shaft seat 3.

[0023] Referring to Figure 1 , the connecting plate 7 connected to the soft shaft mounting seat 6 is provided with four fixing bolt holes 8, which are fixed to the swing arm 1 by four bolts 9.

[0024] Referring to Figure 2 , the soft shaft mounting seat 6 and the connecting plate 7 are connected by three bolts 9, and there are three arc-shaped holes 10 with a hole diameter slightly larger than the thread specification of the bolts 9 on the corresponding positions of the connecting plate 7.

[0025] On the corresponding positions of the swing arm 1, there are three arc-shaped holes 11 with a hole diameter slightly larger than the outer diameter specification of the heads of the bolts 9.

[0026] The soft shaft mounting seat 6 and the driving shaft seat 3 fixedly mounted by the swing arm 1 form a rotary link with limited rotation range, and the arc-shaped holes 10 and 11 play the role of rotation limiting in the circumferential direction, and the arc-shaped hole 10 plays the role of limiting the soft shaft mounting seat from moving in the axial direction.

[0027] The spline output shaft 12 of the soft shaft mounting seat 6 is inserted into the spline hole of the transmission shaft 13 of the driving shaft seat 3.

[0028] The input end of the soft shaft mounting seat 6 is on the left side, and the output end is downward, and the included angle between the two is less than 180 degrees, and the inside of the soft shaft mounting seat 6 is a pair of bevel gear transmission.

[0029] As shown in Figure 3 The soft shaft mounting seat 6 is provided with a limiting auxiliary plate 14, which is provided with a pull wire hole 15 and a limiting column 16.

[0030] The connecting plate 7 is provided with a nut 17 as a limiting block.

[0031] The swing arm 1 is provided with a pull wire seat 18, and a corresponding pull wire 19 is connected to the pull wire hole 15.

[0032] When the device starts and stops, the pull wire 19 pulls the soft shaft mounting seat 6 to rotate to the position where the limiting column 16 is tightly attached to the side of the nut 17, so as to avoid the additional impact caused by the reverse rotation of the rotary link soft shaft mounting seat 6 due to the lack of locking in the circumferential direction at this time.

[0033] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A movable working head with a hinged flexible shaft, the movable working head comprising a device body, a swing arm, a working head, a drive shaft seat, a flexible shaft mounting seat, and a flexible shaft, characterized in that: One end of the swing arm is hinged to the equipment body; The drive shaft seat is mounted on the other end of the swing arm and the working head is mounted on one end of the drive shaft seat; The flexible shaft is hinged to the other end of the drive shaft seat via a flexible shaft mounting base; One end of the flexible shaft is mounted on the flexible shaft mounting base, and the other end is connected to the power source on the equipment body; The connection between the flexible shaft mounting base and the drive shaft base is a rotary connection. The included angle between the input and output ends of the flexible shaft mounting base is not equal to 180 degrees; The flexible shaft mounting base is a gearbox whose internal transmission is driven by a pair of bevel gears; At the connection between the flexible shaft mounting base and the drive shaft base, a locking and limiting device is provided in the rotation direction of the flexible shaft connecting base; The locking and limiting device consists of a push-pull rod and a pair of limiting blocks.

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