CN215214337U

CN215214337U - Transmission shaft structure

Info

Publication number: CN215214337U
Application number: CN202120081329.0U
Authority: CN
Inventors: 陈满; 马宗宇; 余红波; 丘伟平; 房世龙
Original assignee: Longgong Shanghai Precision Hydraulic Components Co ltd
Current assignee: Longgong Shanghai Precision Hydraulic Components Co ltd
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-12-17
Anticipated expiration: 2031-01-12

Abstract

The utility model discloses a transmission shaft structure, a serial communication port, include from last first cylinder, second cylinder, external splines, third cylinder and the gear that connects gradually extremely down, second cylinder one end forms the platform with the junction of first cylinder, and external splines are equipped with the flange with the third cylinder junction. The utility model discloses a parts machining is convenient, the installation is simple, and it constitutes a plurality of parts such as transmission shaft, spline housing, sun gear commonly used, complicated transmission structure, changes into and adopts the integral type transmission shaft to carry out driven mode and connects walking motor and speed reducer, and simple structure both easily produces processing, installation operation, has reduced the part cost again, has improved production efficiency, has guaranteed transmission shaft stable performance work.

Description

Transmission shaft structure

Technical Field

The utility model relates to a transmission shaft structure belongs to hydraulic motor speed reducer transmission technical field.

Background

The transmission shaft is an important component of the hydraulic motor and the speed reducer, and is mainly used for connecting the motor and the speed reducer and adjusting the rotating speed of the motor and the speed reducer through a gear and a spline on the transmission shaft so as to meet the requirement of sufficient output torque. In the existing connection structure of the hydraulic motor and the speed reducer, the connection structure is generally connected by a plurality of parts, the structure is complex, the requirements on the machining precision and the manufacturability of the parts connected with each other are high, the parts are various, and the cost is high.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: how to simplify the connection structure between hydraulic motor and the speed reducer, reduce part quantity, reduce cost.

In order to solve the technical problem, the utility model provides a transmission shaft structure, a serial communication port, include from last first cylinder, second cylinder, external splines, third cylinder and the gear that connects gradually extremely down, second cylinder one end forms the platform with the junction of first cylinder, and external splines are equipped with the flange with the third cylinder junction.

Preferably, a first tool withdrawal groove is formed at a position, close to the platform, of one end of the first column.

Preferably, the first tool withdrawal groove is in close contact connection with one side of the platform.

Preferably, a second tool withdrawal groove is formed in a position, close to the flange, of one end of the third column.

Preferably, the second tool withdrawal groove is in close contact connection with one side of the flange.

Preferably, the maximum outer diameter of the first cylinder is smaller than that of the second cylinder, and the maximum outer diameter of the second cylinder is smaller than that of the third cylinder.

Preferably, the same side of the first cylinder and the second cylinder is provided with a chamfer structure.

Preferably, the external spline is matched with the internal spline of the cylinder body; the gear is matched with the primary planet assembly.

Preferably, the first column body and the second column body are both uniform columnar structures; the part of the third cylinder, which is close to the gear, is of a step-shaped structure with the gradually reduced outer diameter.

Preferably, an oil seal is formed between the part of the third cylinder close to the gear and the framework.

The utility model discloses a parts machining is convenient, the installation is simple, and it constitutes a plurality of parts such as transmission shaft, spline housing, sun gear commonly used, complicated transmission structure, changes into and adopts the integral type transmission shaft to carry out driven mode and connects walking motor and speed reducer, and simple structure both easily produces processing, installation operation, has reduced the part cost again, has improved production efficiency, has guaranteed transmission shaft stable performance work.

Drawings

Fig. 1 is a schematic view of a structure of a propeller shaft.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

The utility model provides a transmission shaft structure, as shown in figure 1, it includes from last to first cylinder 1 to coaxial coupling in proper order down, second cylinder 4, external splines 5, third cylinder 8 and gear 9, 4 one end of second cylinder and first cylinder 1's junction form platform 3, the position that the 1 one end outside of first cylinder is close to platform 3 is equipped with around the first tool withdrawal groove 2 of 1 circumference round of first cylinder, external splines 5 is equipped with flange 6 with the junction of third cylinder 8, the position that the 8 one end outside of third cylinder is close to flange 6 is equipped with around the second tool withdrawal groove 7 of 8 circumference rounds of third cylinder, gear 9 is connected to the 8 other ends of third cylinder.

The maximum outer diameter of the first cylinder 1 is smaller than that of the second cylinder 4, and the maximum outer diameter of the second cylinder 4 is smaller than that of the third cylinder 8. The same side of the first column body 1 and the second column body 4 is provided with a chamfer structure.

The external spline 5 is matched with the internal spline of the cylinder body; the gear 9 is matched with the primary planet assembly; the first column body 1 and the second column body 4 are both uniform columnar structures; the lower half part of the third cylinder 8 (i.e. the part of the third cylinder 8 close to the gear 9) is a step-shaped structure with gradually reduced outer diameter; two adjacent steps are in transition connection through corresponding boss structures; an oil seal is formed between the lower half part of the third cylinder 8 and the framework.

In the embodiment, the first tool withdrawal groove 2 is closely connected with one side of the platform 3; the second tool withdrawal groove 7 is closely connected with one side of the flange 6.

The utility model discloses when using, external splines 5 and cylinder body internal spline are connected, and gear 9 is connected with one-level planet assembly, and first cylinder 1 passes through the bearing to be fixed on the motor cover, and 8 the first half of third cylinder pass through the bearing to be fixed on the motor seat, and 8 the latter half installation skeleton oil blanket of third cylinder are prevented leaking simultaneously.

When hydraulic oil is introduced into the walking motor, the cylinder body rotates, the internal spline drives the external spline 5 to rotate, the gear 9 is driven to rotate, and then the gear 9 drives the speed reducer to rotate.

Claims

1. The utility model provides a transmission shaft structure, its characterized in that includes from last first cylinder (1), second cylinder (4), external splines (5), third cylinder (8) and gear (9) that connect gradually extremely down, and the junction of second cylinder (4) one end and first cylinder (1) forms platform (3), and external splines (5) and third cylinder (8) junction are equipped with flange (6).

2. A propeller shaft arrangement as defined in claim 1, wherein the first cylindrical body (1) is provided with a first relief (2) at one end adjacent the platform (3).

3. A propeller shaft arrangement as claimed in claim 2, in which the first undercut (2) is in abutting engagement with one side of the platform (3).

4. A propeller shaft arrangement as defined in claim 1, in which the third cylindrical portion (8) is provided with a second relief (7) at one end adjacent the flange (6).

5. A propeller shaft arrangement as claimed in claim 4, in which the second undercut (7) is in abutting engagement with one side of the flange (6).

6. A propeller shaft arrangement as claimed in claim 1, in which the first cylindrical body (1) has a maximum outer diameter which is less than the maximum outer diameter of the second cylindrical body (4), and the second cylindrical body (4) has a maximum outer diameter which is less than the maximum outer diameter of the third cylindrical body (8).

7. A drive shaft construction according to claim 1, characterised in that the first (1) and second (4) cylinders are chamfered on the same side.

8. A drive shaft construction according to claim 1, characterised in that the external splines (5) match the internal splines of the cylinder block; the gear (9) is matched with the primary planet assembly.

9. A drive shaft construction according to claim 1, characterised in that the first (1) and second (4) columns are of uniform cylindrical configuration; the part of the third cylinder (8) close to the gear (9) is of a step-shaped structure with the gradually reduced outer diameter.

10. A drive shaft arrangement according to claim 1 or 9, characterised in that the third body (8) is provided with an oil seal between the part adjacent the gear (9) and the frame.