CN-115781572-B - Double-end stud sleeve

CN115781572BCN 115781572 BCN115781572 BCN 115781572BCN-115781572-B

Abstract

The invention discloses a stud sleeve, which comprises a push rod, a connecting rod, a fixing sleeve and a threaded plate, wherein the push rod is connected with the connecting rod, the fixing sleeve is fixedly sleeved on the connecting rod, the threaded plate is connected to the end part of the fixing sleeve, which is far away from the push rod, a first threaded hole used for being connected with a stud is formed in the threaded plate, a first limiting hole is formed in the end part, which is close to the connecting rod, of the threaded plate, a clamping structure is connected in the first limiting hole in a sliding mode, the first limiting hole is communicated with the first threaded hole, and the connecting rod is connected with the push rod through a clamping releasing mechanism. The stud sleeve ensures the standard of the stud connecting torque, greatly reduces the rework rate of the stud screwing and improves the assembly efficiency of the stud.

Inventors

ZHANG YANQI
ZHEN HAIYU
LI JUN
HAN JIANLONG

Assignees

北京中车重工机械有限公司

Dates

Publication Date: 20260508
Application Date: 20221110

Claims (9)

1. The double-end stud sleeve is characterized by comprising a push rod, a connecting rod, a fixing sleeve and a threaded plate, wherein the push rod is connected with the connecting rod; The end part of the threaded plate, which is close to the connecting rod, is provided with a first limit hole, a clamping structure is connected in the first limit hole in a sliding way, and the first limit hole is communicated with the first threaded hole; The connecting rod is connected with the ejector rod through a clamping releasing mechanism, and the clamping releasing mechanism is used for releasing the clamping structure tightly pressed at the end part of the connecting rod, so that the end part limit of the double-end stud is released; when the sleeve is disassembled, the screwing tool reversely rotates to drive the ejector rod to rotate, the ejector rod drives the unlocking mechanism to rotate, and the unlocking mechanism knocks the connecting rod to enable the connecting rod to vibrate and be rapidly separated from the clamping structure; The unlocking mechanism comprises a first connecting pin shaft and a first pin connecting through hole, and the ejector rod is connected with the connecting rod through the first connecting pin shaft; the connecting rod is provided with a first pin connecting through hole at the position for connecting with the ejector rod, and the length of the first pin connecting through hole along the circumferential direction of the connecting rod is larger than the diameter of the first connecting pin shaft; The first connecting pin shaft is connected to the ejector rod in a threaded mode, and the end portion of the first connecting pin shaft is connected to the first pin connecting through hole.
2. The stud sleeve of claim 1 wherein the gripping formations are restraining steel balls; the end part of the connecting rod, which is close to the threaded plate, is provided with a second limiting hole, and the second limiting hole and the first limiting hole are coaxially arranged; the aperture of the first limiting hole is larger than the diameter of the limiting steel ball, and the diameter of the limiting steel ball is larger than the aperture of the second limiting hole.
3. The stud sleeve of claim 2, wherein the length of the first stop bore is less than the diameter of the stop ball and greater than the radius of the stop ball; the diameter of the limiting steel ball is larger than the small diameter of the first threaded hole.
4. The stud sleeve of claim 1, wherein the ram includes a head and a shank connected together, the shank being inserted within the connecting rod; A thrust bearing is arranged between the ejector rod and the connecting rod, and the thrust bearing is sleeved on the rod body of the ejector rod.
5. The stud sleeve of claim 4, wherein the end of the stem head of the ram is provided with a square hole for connection with a tightening tool; The outer side face of the club head of the ejector rod is provided with an annular rubber ring groove, a first pin shaft hole connected with the square hole is arranged in the rubber ring groove, and the ejector rod is connected with a tightening tool through a cylindrical pin connected in the first pin shaft hole.
6. The stud sleeve of claim 5 wherein a rubber ring for limiting the cylindrical pin is sleeved in the rubber ring groove.
7. The stud sleeve of claim 1, wherein the connecting rod comprises a first rod section, a second rod section and a third rod section which are integrally and sequentially arranged, the end of the first rod section is provided with a first connecting hole, and the first connecting hole is used for being spliced with the ejector rod; The second rod section and the third rod section are sleeved in the fixed sleeve, and the second rod section is fixedly connected with the fixed sleeve.
8. The stud sleeve of claim 7, wherein a torsion spring is disposed between the first pole segment and the retaining sleeve, the torsion spring being sleeved on the second pole segment; One end of the torsion spring is fixedly connected with the end part of the first rod section, and the other end of the torsion spring is fixedly connected with the end part of the fixed sleeve.
9. The stud sleeve of claim 1, wherein the connecting rod is connected to the retaining sleeve by a second connecting pin; The fixing sleeve is provided with a second pin connection through hole at the connection position with the connecting rod, and the length of the second pin connection through hole along the circumferential direction of the fixing sleeve is larger than the diameter of the second connection pin shaft; the second connecting pin shaft is connected to the connecting rod in a threaded mode.

Description

Double-end stud sleeve Technical Field The invention relates to the technical field of disassembly tools, in particular to a stud sleeve. Background The stud is also called a stud, is a connecting piece with threads at two ends, and is widely applied to mechanical equipment, bridges, automobiles, motorcycles, boiler steel structures, towers, large-span steel structures and large-scale buildings. At present, the stud is installed in a manner that a pneumatic or electric tightening tool is matched with a stud sleeve. The structure of the finished stud sleeve used in the prior art is an integrated sleeve, one end of the integrated sleeve is fixed on a pneumatic or electric tool when the stud is installed, the other end of the integrated sleeve is connected with the stud in a threaded mode, and the purpose of fastening the stud is achieved by applying torque to the sleeve through the pneumatic or electric tool. After the fastening operation is finished, when the sleeve is detached from the end part of the stud, the fastened stud is often unscrewed or loosened together, so that the torque of a product is not up to standard, repeated fastening of an operator is caused, and the assembly efficiency is affected. Disclosure of Invention In view of the above, the invention provides a stud sleeve, which avoids screwing out or unscrewing a fastened stud together, ensures the standard of stud connecting torque, greatly reduces the rework rate of stud screwing, and improves the assembly efficiency of the stud. In order to achieve the above purpose, the present invention provides the following technical solutions: The double-end stud sleeve comprises a push rod, a connecting rod, a fixing sleeve and a threaded plate, wherein the push rod is connected with the connecting rod, the fixing sleeve is fixedly sleeved on the connecting rod, and the threaded plate is connected to the end part, far away from the push rod, of the fixing sleeve; The end part of the threaded plate, which is close to the connecting rod, is provided with a first limit hole, a clamping structure is connected in the first limit hole in a sliding way, and the first limit hole is communicated with the first threaded hole; The connecting rod is connected with the ejector rod through a releasing mechanism. Optionally, the clamping structure is a limit steel ball; the end part of the connecting rod, which is close to the threaded plate, is provided with a second limiting hole, and the second limiting hole and the first limiting hole are coaxially arranged; the aperture of the first limiting hole is larger than the diameter of the limiting steel ball, and the diameter of the limiting steel ball is larger than the aperture of the second limiting hole. Optionally, the length of the first limiting hole is smaller than the diameter of the limiting steel ball and larger than the radius of the limiting steel ball; the diameter of the limiting steel ball is larger than the small diameter of the first threaded hole. Optionally, the ejector rod comprises a rod head and a rod body which are connected together, and the rod body is inserted into the connecting rod; A thrust bearing is arranged between the ejector rod and the connecting rod, and the thrust bearing is sleeved on the rod body of the ejector rod. Optionally, a square hole for connecting with a tightening tool is formed at the end part of the rod head of the ejector rod; The outer side face of the club head of the ejector rod is provided with an annular rubber ring groove, a first pin shaft hole connected with the square hole is arranged in the rubber ring groove, and the ejector rod is connected with a tightening tool through a cylindrical pin connected in the first pin shaft hole. Optionally, a rubber ring used for limiting the cylindrical pin is sleeved in the rubber ring groove. Optionally, the connecting rod comprises a first rod section, a second rod section and a third rod section which are integrally and sequentially arranged, and a first connecting hole is formed in the end part of the first rod section and is used for being inserted into the ejector rod; The second rod section and the third rod section are sleeved in the fixed sleeve, and the second rod section is fixedly connected with the fixed sleeve. Optionally, a torsion spring is arranged between the first pole section and the fixed sleeve, and the torsion spring is sleeved on the second pole section; One end of the torsion spring is fixedly connected with the end part of the first rod section, and the other end of the torsion spring is fixedly connected with the end part of the fixed sleeve. The connecting rod is provided with a first pin connecting through hole, and the length of the first pin connecting through hole along the circumferential direction of the connecting rod is larger than the diameter of the first connecting pin; The first connecting pin shaft is connected to the ejector rod in a threaded mode, and the end portion of the first