Integrated, Versatile, Detachable Combined Double‑Sliding Heavy‑Duty Drive Shaft Assembly
The utility model relates to an integrated, versatile, detachable combined double‑sliding heavy‑duty drive shaft assembly, which comprises:

a first shaft, whose two ends are symmetrically sleeved onto a first three‑ball trunnion assembly and a second three‑ball trunnion assembly of identical structure;

a first sliding‑end universal joint housing accommodating the first three‑ball trunnion assembly, provided at the end opposite to the connection between the first three‑ball trunnion assembly and the first shaft with a first connecting assembly for detachable connection to a second shaft;

a second sliding‑end universal joint housing accommodating the second three‑ball trunnion assembly, provided at the end opposite to the connection between the second three‑ball trunnion assembly and the first shaft with a second connecting assembly for detachable connection to a third shaft.

The detachable connection enables the drive shaft assembly to be connected with multiple shafts according to actual requirements, so as to adjust its length. Assembly and disassembly are convenient.

In the event that a shaft breaks due to instantaneous load exceeding maximum stress, or fails due to ball track wear, local replacement can be performed without full replacement, reducing replacement costs for users.

Claim 1
An integrated, versatile, detachable combined double‑sliding heavy‑duty drive shaft assembly, characterized in that it comprises:

a first shaft (1), whose two ends are symmetrically sleeved onto a first three‑ball trunnion assembly (2) and a second three‑ball trunnion assembly (3) of identical structure;

a first sliding‑end universal joint housing (41) accommodating the first three‑ball trunnion assembly (2), which is provided, in a direction parallel to the axis and at the end opposite to the connection between the first three‑ball trunnion assembly (2) and the first shaft (1), with a first connecting assembly for detachable connection to a second shaft (5);

a second sliding‑end universal joint housing (42) accommodating the second three‑ball trunnion assembly (3), which is provided, in a direction parallel to the axis and at the end opposite to the connection between the second three‑ball trunnion assembly (3) and the first shaft (1), with a second connecting assembly for detachable connection to a third shaft (6).

Henan Tongxin Transmission Co., Ltd.
Founded in 2001, Henan Tongxin Transmission Co., Ltd. is located in the Economic and Technological Development Zone of Xuchang City, Henan Province, covering an area of 70,000 square meters.

It is a national-level “Specialized, Sophisticated, Unique, and Innovative” Little Giant Enterprise and a national high‑tech enterprise, and was officially listed on the Beijing Stock Exchange on November 15, 2021.

The company has its own Technology Center, committed to excellence in product quality and continuous innovation in technology and processes. With more than 40 patents, it pioneered the hollow trim‑free forging technology for blanks in the industry, with technologies reaching an internationally advanced level.

Relying on advanced production technology, sophisticated equipment, efficient production organization, a strict quality control system and a comprehensive full‑process service model, the company adheres to the quality policy of
“Pursue zero defects, satisfy customers” to build itself into a professional drive shaft service platform.

Guided by the business philosophy of
“Derive profits from products, not from customers”,
the company achieves win‑win cooperation with customers.
The company’s products cover miniature, light‑duty, medium‑duty, heavy‑duty and special‑purpose drive shafts, as well as drive shafts for railway locomotives, petroleum machinery and construction machinery, totaling more than 30 series and over 3,800 varieties.
With the philosophy of “Sincere partnership, trustworthy friendship”, our products are sold throughout China. We maintain long‑term cooperation with major OEMs including Shaanxi Automobile, Yutong, XCMG, Zoomlion, CRRC, Dayun, Shandong Automobile, etc. Our products are also exported to Russia, the United States, South Korea, Turkey and other countries.
Tongxin Transmission – Connecting the World, Creating Tomorrow, Shaping the Future Together.
We uphold the vision of building an enduring enterprise, and take “Revitalizing the Central Plains Economy and Serving the Global Automotive Industry” as our mission. We will continue to forge ahead with the spirit of craftsmanship, constantly improve our service system, deliver better products to customers, create greater value for employees and reward investors with outstanding business performance. We will make greater contributions to the development of China’s and even the global automotive industry, and promote social progress.