CN112901648A

CN112901648A - Large-angle pull rod ball head structure and machining method

Info

Publication number: CN112901648A
Application number: CN202110230013.8A
Authority: CN
Inventors: 徐航
Original assignee: Suzhou Selward Internet Of Things Technology Co Ltd
Current assignee: Suzhou Selward Internet Of Things Technology Co Ltd
Priority date: 2021-03-02
Filing date: 2021-03-02
Publication date: 2021-06-04

Abstract

The invention discloses a large-angle pull rod ball head structure, comprising a ball head rod, a rotating rod and a ball head shell. The ball head shell is composed of two hemispherical shells and fixing parts of the two hemispherical shells. The ball head cavity of the ball head rod and the rotating rod head cavity of the rotating rod are provided with a rotating rod cavity on one side of the rotating rod head cavity of the ball head shell, and the rotating rod head and the part of the rotating rod connected with the rotating rod head are respectively located in the rotating rod head cavity. And in the rotating rod cavity, an open groove is set on one side of the ball head cavity of the ball head shell, the ball head of the ball head rod is located in the ball head cavity, and the part of the rod body connected with the ball head rod is located in the open groove, and the open groove makes the ball The head rod turns and swings back and forth. The structure of the invention is simple and easy to assemble. The two hemispherical shells are combined together to form a spherical shell. The opening groove enables the ball end rod to swing back and forth in addition to being able to rotate. In addition, the rotation of the other end of the rotating rod forms a large-angle concentric ball connection. structure to realize large-angle linkage movement.

Description

Large-angle pull rod ball head structure and machining method

Technical Field

The invention relates to a pull rod ball head structure, in particular to a large-angle pull rod ball head structure.

Background

The existing pull rod ball head structure is designed to have a small swinging angle in order to prevent the ball head from falling off from a ball shell. However, in robots and novel vehicles, a tie rod ball with a large angle of motion range is required, and the requirement is contradictory to the existing tie rod ball structure, and the existing tie rod ball structure cannot meet the requirement and needs to be innovated.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a large-angle pull rod ball head structure.

In order to achieve the technical purpose, the invention adopts the technical scheme that: a large-angle pull rod ball head structure, which comprises a ball head rod, a rotating rod and a ball head shell,

the ball head shell consists of two hemispherical shells and fixing parts of the two hemispherical shells, a ball head cavity of the ball head rod and a rotating rod head cavity of the rotating rod are arranged in the ball head shell,

a rotating rod cavity is arranged at one side of the rotating rod cavity of the ball head shell, the rotating rod head and part of the rotating rod connected with the rotating rod head are respectively positioned in the rotating rod head cavity and the rotating rod cavity,

an open slot is arranged at one side of a ball head cavity of the ball head shell, a ball head of the ball head rod is positioned in the ball head cavity, a part of rod body of the ball head rod, which is connected with the ball head, is positioned in the open slot, and the open slot enables the ball head rod to rotate and swing back and forth.

Furthermore, the open slot is a ridge-shaped open slot, so that the open slot is designed to be ridge-shaped to prevent the ball head rod from being clamped with the tail end of the rotating rod in a straight line state, and the ball head rod can easily deflect at the open slot.

Furthermore, the outer wall of the ball head shell where the rotating rod cavity is located is a cone, a taper thread is arranged on the cone, and a taper nut is sleeved on the taper thread to lock and fix the two hemispherical shells.

Furthermore, the rotating rod head is spherical or ellipsoidal, the rotating rod head cavity is correspondingly made into a corresponding shape, the rotating rod is prevented from being separated, and the two hemispherical shells clamp the rotating rod head so that the rotating rod cannot move in a string mode.

Furthermore, the positioning columns and the positioning holes are symmetrically arranged on the hemispherical shells, and the taper and the threads outside the rotating rod cavity are machined after the two hemispherical shells are matched, positioned and buckled by the positioning columns and the positioning holes, so that the concentricity of the two assembled hemispherical shells can be ensured.

The beneficial technical effects of the invention are as follows: the structure is simple and easy to assemble, the two hemispherical shells form a spherical shell together, the open slot enables the ball head rod to rotate and swing back and forth, and the rotating rod at the other end rotates to form a large-angle concentric ball connecting structure and realize large-angle connecting rod movement.

Drawings

The invention is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic view of the assembly structure of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

FIG. 3 is an exploded view of the structure of the present invention;

FIG. 4 is a schematic view of an open ridge structure according to the present invention.

In the figure: 1. the ball head comprises a ball head rod 2, a ball head shell 3, a taper nut 4, a rotating rod 5, a hemispherical shell 6, a fixing piece 7, an open slot 8, a positioning column 9 and a positioning hole.

Detailed Description

Example 1

The large-angle pull rod ball head structure shown in fig. 1 comprises a ball head rod 1, a rotating rod 4 and a ball head shell 2, wherein the ball head shell 2 is composed of two hemispherical shells 5 and fixing parts 6 of the two hemispherical shells 5, a ball head cavity of the ball head rod 1 and a rotating rod head cavity of the rotating rod 4 are arranged in the ball head shell 2, the rotating rod cavity is arranged on one side of the rotating rod head cavity of the ball head shell 2, the rotating rod head and a part of rotating rods connected with the rotating rod head are respectively positioned in the rotating rod head cavity and the rotating rod cavity, an open groove 7 is arranged on one side of the ball head cavity of the ball head shell 2, the ball head of the ball head rod 1 is positioned in the ball head cavity, the part of rod bodies, connected with the ball head, of the ball head rod 1 is positioned in the open groove 7, and.

The ball head structure is formed by two hemispherical shells, a ball head rod and a rotating rod, the front ends of the two hemispherical shells are combined to form a ball shell package, an opening is reserved to enable the ball head rod to swing back and forth except for rotation, and the rotating rod at the other end rotates to form a large-angle concentric ball connecting structure.

Example 2

As a preferable design of the embodiment 1, as shown in fig. 4, the opening groove 7 is a ridge-shaped opening groove, and in order to avoid the locking of the ball rod 1 and the tail end of the rotating rod 4 in a straight line state, the opening groove 7 is designed to be ridge-shaped, so that the ball rod 1 can be easily deflected at the position.

Example 3

As a preferred design of embodiment 1, as shown in fig. 2 and 3, a positioning column 8 and a positioning hole 9 are arranged on a hemispherical shell 5, the two hemispherical shells are positioned with each other through the positioning column 8 and the positioning hole 9 and are buckled into a ball head shell 2, then, a thread and a taper outside a rotating rod cavity are processed, so that concentricity of an inner cavity of the ball head shell can be ensured, the outer wall of the ball head shell where the rotating rod cavity is located is a cone, the cone is provided with a taper thread, and a taper nut 3 is sleeved on the taper thread to lock and fix the two hemispherical shells 5.

As a specific design, the rotary rod head is spherical or ellipsoidal, the rotary rod head cavity is correspondingly made into a corresponding shape, the rotary rod is prevented from being separated, and the two hemispherical shells clamp the rotary rod head to prevent the rotary rod from moving.

It can be seen from the above embodiment that the invention has simple structure and easy assembly, the two hemispherical shells are combined to form a spherical shell, the open slot enables the ball head rod to swing back and forth besides rotating, and the rotating rod at the other end rotates to form a large-angle concentric sphere connection structure, thereby realizing large-angle connecting rod movement.

The above embodiments are only used for explaining the technical solution of the present invention, and are not used for limiting the technical solution of the present invention, and all the simple modifications based on the present invention belong to the protection scope of the present invention.

Claims

1. A large-angle tie rod ball head structure is characterized in that: it comprises a ball head rod, a rotating rod and a ball head shell, and the ball head shell is composed of two hemispherical shells and the fixing parts of the two hemispherical shells. The ball head cavity of the ball head rod and the rotary rod head cavity of the rotary rod are arranged, and a rotary rod cavity is set on one side of the rotary rod head cavity of the ball head shell. In the head cavity and the rotating rod cavity, an open groove is arranged on one side of the ball head cavity of the ball head shell. Rotate the club and swing it back and forth.

2. The high-angle tie rod ball head structure according to claim 1, characterized in that: the open groove is a ridge-shaped open groove, in order to avoid the sticking of the ball head rod and the tail end of the rotating rod in a straight state, the open groove is open. The grooves are ridged to allow easy deflection of the club.

3. The large-angle tie rod ball head structure according to claim 1, characterized in that: the outer wall of the ball head shell where the rotating rod cavity is located is provided with a section of vertebral body and a section of thread, and the taper nut corresponds to the outer wall of the ball head shell with a thread and a thread. The vertebral body locks and fixes the two hemispherical shells through the cooperation of threads and tapers.

4. The high-angle tie rod ball head structure according to claim 1, characterized in that: the rotary rod head is spherical or ellipsoid, and the rotary rod head cavity is correspondingly shaped into a corresponding shape to prevent the rotary rod from coming out, and the two hemispherical shells Snap the rod head so that the rod does not stray.

5. The large-angle tie rod ball head structure according to claim 1, characterized in that: a positioning column and a positioning hole are arranged at symmetrical positions on the hemispherical shell, and the two hemispherical shells are positioned and buckled by the positioning column and the positioning hole. The taper and thread on the outside of the rotating rod cavity are processed to ensure the concentricity of the two hemispherical shells after assembly.