CN214838346U

CN214838346U - Anti-rotation precision welding cold-drawn steel pipe

Info

Publication number: CN214838346U
Application number: CN202120277798.XU
Authority: CN
Inventors: 陶声荣; 李晓刚
Original assignee: Jiangsu Jelt Lifting System Co ltd
Current assignee: Jiangsu Jiete precision pipe industry Co.,Ltd.
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2021-11-23
Anticipated expiration: 2031-02-01

Abstract

The utility model belongs to the technical field of the accurate steel pipe technique and specifically relates to an anti-rotation accurate welding cold drawn steel pipe, including the steel pipe main part that can slide along piston rod length direction, the inner wall of steel pipe main part corresponds with the piston rod outer wall and is provided with the spacing subassembly that is used for preventing steel pipe main part rotation, spacing subassembly includes the spacing groove that steel pipe main part inner wall was seted up and sets up the spacing bead at the piston rod surface, spacing bead is the same with the width of spacing groove, spacing groove and spacing bead correspond at least and are provided with three groups, and spacing groove and spacing bead use steel pipe main part center as centre of a circle circumference equipartition, through set up the spacing groove at the steel pipe inner wall, realize the spacing fixed to the steel pipe, avoid the steel pipe to take place to rotate in the lift process, guarantee the stability of going up and down; through setting up the dog at the spacing groove tip, carry on spacingly to spacing bead, avoid spacing bead to deviate from the spacing inslot, guarantee telescopic machanism's normal use.

Description

Anti-rotation precision welding cold-drawn steel pipe

Technical Field

The utility model belongs to the technical field of the accurate steel pipe technique and specifically relates to an anti-rotating accurate welding cold drawn steel pipe.

Background

A cold drawn steel pipe is one of precision steel pipes, i.e., one of its different classifications according to production processes, different from a hot rolled (expanded) pipe. The method is characterized in that the method is formed by cold drawing for multiple times in the process of expanding the blank or the raw material pipe, and the cold drawing is usually carried out on a single-chain type or double-chain type cold drawing machine with the temperature of 0.5-100T. The cold rolled (drawn) steel tube includes carbon thin-wall steel tube, alloy thin-wall steel tube, stainless thin-wall steel tube and special-shaped steel tube, except general steel tube, low-medium pressure boiler steel tube, high-pressure boiler steel tube, alloy steel tube, stainless steel tube, petroleum cracking tube, machining tube, thick-wall tube and small-bore inner die cold drawn tube. The steel pipe that uses among the current pneumatic mechanism is generally fixed in structure, and the function singleness forms pneumatic elevation structure with the piston rod cooperation, but the cooperation effect is poor, and at the lift in-process, the pipe fitting easily takes place to rotate around the piston rod to influence lifting efficiency, influence the normal use of equipment.

SUMMERY OF THE UTILITY MODEL

Can the pivoted not enough when overcoming current steel pipe lift, the utility model provides a prevent rotational precision welding cold drawn steel pipe through set up the spacing groove at the steel pipe inner wall and come the solution problem.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a prevent rotatory precision welding cold drawn steel pipe, includes the steel pipe main part that can follow piston rod length direction and slide, the inner wall of steel pipe main part and the correspondence of piston rod outer wall are provided with and are used for preventing the spacing subassembly of steel pipe main part pivoted.

Furthermore, spacing subassembly includes the spacing groove that the steel pipe main part inner wall was seted up and sets up the spacing bead at the piston rod surface, and the width of spacing bead is the same with the spacing groove.

Furthermore, the limiting grooves and the limiting convex edges are at least correspondingly provided with three groups, and the limiting grooves and the limiting convex edges are circumferentially and uniformly distributed by taking the center of the steel pipe main body as a circle center.

Furthermore, the end part of the limit groove is provided with a stop dog for preventing the piston rod from being separated.

Furthermore, the check block is detachably connected with the steel pipe main body in a concave-convex block inserting mode.

The utility model has the advantages that the limiting groove is arranged on the inner wall of the steel pipe, so that the steel pipe is limited and fixed, the steel pipe is prevented from rotating in the lifting process, and the lifting stability is ensured; through setting up the dog at the spacing groove tip, carry on spacingly to spacing bead, avoid spacing bead to deviate from the spacing inslot, guarantee telescopic machanism's normal use.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic view of a steel pipe body.

In the figure, 1, a steel pipe main body, 2, a piston rod, 3, a limiting groove, 4, a limiting convex edge and 5, a stop block are arranged.

Detailed Description

Fig. 1 is the structural schematic diagram of the utility model, a prevent rotatory accurate welding cold drawn steel pipe, including can follow 2 length direction of piston rod and carry out the steel pipe main part 1 that slides, the inner wall of steel pipe main part 1 corresponds with 2 outer walls of piston rod and is provided with and is used for preventing the spacing subassembly of steel pipe main part 1 pivoted.

The steel pipe main body 1 and the piston rod 2 are used in a matched mode to form a simple pneumatic mechanism, the piston rod 2 can stretch along the inner wall of the steel pipe main body 1 in the stretching process, the steel pipe main body 1 can be guaranteed not to rotate under the fixing effect of the limiting assembly, and therefore the lifting stability of the pneumatic mechanism is guaranteed.

The limiting assembly comprises a limiting groove 3 formed in the inner wall of the steel pipe body 1 and a limiting convex edge 4 arranged on the outer surface of the piston rod 2, and the width of the limiting convex edge 4 is the same as that of the limiting groove 3. Spacing groove 3 and spacing bead 4 correspond the setting, and spacing bead 4 can be followed spacing groove 3 and controlled horizontal slip.

The limiting grooves 3 and the limiting convex edges 4 are at least correspondingly provided with three groups, and the limiting grooves 3 and the limiting convex edges 4 are circumferentially and uniformly distributed by taking the center of the steel pipe main body 1 as a circle center. Realize fixing steel pipe main part 1 through three at least spacing subassemblies, avoid the steel pipe to take place the rotating in the lift in-process, guarantee the stability of going up and down.

As shown in fig. 2, the end of the limiting groove 3 is provided with a stop block 5 for preventing the piston rod 2 from coming off, and the stop block 5 is detachably connected with the steel pipe body 1 in a concave-convex block inserting mode. The 5 bilateral symmetry of dog is provided with the grafting lug, and 3 tip of spacing groove correspond the grafting lug and have seted up the inserting groove, and the inserting groove corresponds with the grafting lug and sets up to the T type for dog 5 installation dismantles convenient and fast.

With piston rod 2 from the 1 left end of steel pipe main part mouth of stretching into, under the limiting displacement of dog 5, can avoid piston rod 2 to deviate from the steel pipe other end to guarantee the use of steel pipe in lift pneumatic means.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a prevent rotatory precision welding cold drawn steel pipe, characterized by includes steel pipe main part (1) that can follow piston rod (2) length direction and slide, and the inner wall of steel pipe main part (1) corresponds with piston rod (2) outer wall and is provided with the spacing subassembly that is used for preventing steel pipe main part (1) pivoted.

2. The anti-rotation precision welding cold drawn steel tube according to claim 1, wherein the limiting component comprises a limiting groove (3) formed in the inner wall of the steel tube body (1) and a limiting convex rib (4) arranged on the outer surface of the piston rod (2), and the width of the limiting convex rib (4) is the same as that of the limiting groove (3).

3. The anti-rotation precision welding cold drawn steel tube according to claim 2, wherein the limiting grooves (3) and the limiting convex edges (4) are at least correspondingly provided with three groups, and the limiting grooves (3) and the limiting convex edges (4) are circumferentially and uniformly distributed by taking the center of the steel tube body (1) as a circle center.

4. An anti-rotation precision welded cold drawn steel tube according to claim 2, characterized in that the end of the limit groove (3) is provided with a stopper (5) for preventing the piston rod (2) from coming off.

5. An anti-rotation precision welded cold drawn steel tube according to claim 4, wherein the stop block (5) is detachably connected with the steel tube body (1) by a male-female block insertion manner.