CN2147935Y

CN2147935Y - Fast clamping pipe wrench

Info

Publication number: CN2147935Y
Application number: CN 92241037
Authority: CN
Inventors: 王斌
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-11-17
Filing date: 1992-11-17
Publication date: 1993-12-01
Anticipated expiration: 2002-11-17

Abstract

The utility model relates to a pipe wrench which is mainly used for clamping and screwing screw thread pipe fittings. The supporting seat of a fixed wrench arm is provided with a rotatable rocker rod whose bottom end is fixedly connected with a bevel gear. The left end of a thrust bearing is provided with a support which is engaged with the bevel gear. The screw thread hole of the fast clamping pipe wrench comprises a screw hole gear which is matched with the screw thread of a movable wrench arm. The utility model has the advantages that the use efficiency of the pipe wrench can be enhanced, the labor intensity of operating can be reduced, and the operation can be convenient.

Description

Fast clamping pipe wrench

The utility model relates to a kind of pipe wrench, mainly is applicable to clamp and the rotary screwing thread pipe fitting.

At present, traditional pipe wrench is directly to rotate the knurled nut with hand, movable tong arm is vertically moved, clamp or unclamp threaded fitting, simple in structure, but, because it is limited that hand rotates knurled nut's speed, movable tong arm moves too slow, influences operating efficiency, operation simultaneously is effort also, and the operating time is long also can damage the finger epidermis.

In view of this, the purpose of this utility model provides a kind of quick clamping pipe wrench, can move movable tong arm rapidly, and screw light.

The purpose of this utility model is achieved in that it comprises fixedly tong arm and adjustable clamp, wherein, on the fixing supporting base left side of tong arm, right wall is provided with concentric horizontal through hole, and at the inboard thrust bearing that connects of right cinclides, and on its roof and interior horizontal bar, be provided with two concentric through holes, and a journal bearing and a radial-thrust bearing are installed respectively in two through holes, in journal bearing and radial-thrust bearing, be provided with rotating rocking bar, the fixedly connected bevel gear in the rocking bar bottom also is provided with and is bearing in the thrust bearing left end, be meshed with bevel gear its screwed hole again with the screw bevel gear of movable tong arm threads engaged.

Owing to adopt such scheme, can improve the service efficiency of pipe wrench, reduce the labour intensity of operation simultaneously, operation is also convenient.

Below in conjunction with Fig. 1 and embodiment the utility model is further specified.

Fig. 1 is an example structure schematic diagram of the present utility model.

Among the figure: 1, fixing tong arm, 11, trailing arm, 12, right vice jaw surface, 13, supporting base, 13A, thrust bearing, 13B, journal bearing, 13C, radial-thrust bearing, 14, elastic bearing, 2, movable tong arm, 21, the screw thread trailing arm, 22, left vice jaw surface, 3, screw bevel gear, 4, rocking bar, 5, bevel gear.

In the described embodiment of Fig. 1:

Fixedly tong arm 1 has trailing arm 11, right vice jaw surface 12, supporting base 13 and elastic bearing 14.Wherein supporting base 13 is the flat case that are connected trailing arm 11 left ends top, at left and right wall concentric horizontal through hole is arranged, and the sliding thrust bearing of inlaying or connecting with screw at the inboard thrust bearing 13A(of connection of right cinclides), and roof and interior horizontal bar are provided with concentric vertical through hole, and a journal bearing 13B and radial-thrust bearing 13C be installed respectively, elastic bearing 14 is nibbed spring leaf and the helical spring assemblys that are connected trailing arm 11 tops, plays the effect of support activities tong arm.

Movable tong arm 2 has upper and lower screw thread trailing arm 21 and the left vice jaw surface 22 that is carved with screw thread, and its left vice jaw surface 22 and right vice jaw surface 12 are as relative.

Threads engaged on internal thread hole of screw bevel gear 3 and the screw thread trailing arm 21, its large conic end one end bearing is on thrust bearing 13A.

The straight-bar portion of rocking bar 4 is bearing in journal bearing 13B and the radial-thrust bearing 13C and rotates, and crank portion is exposed at supporting base 13 outsides (end face).

Bevel gear 5 is connected the straight-bar portion bottom of rocking bar 4, and bevel gear 5 is meshed with screw bevel gear 3.

Operating process is as follows:

Crank, bevel gear 5 with hand rotating rocker 4 drive screw bevel gear 3 and rotate, the screw thread trailing arm 21 of the inner bolt hole promotion activity tong arm 2 of screw bevel gear 3 moves (clamp or unclamp pipe fitting) to the left or to the right, at this moment, movable tong arm 2 is supported on the inner bolt hole of screw bevel gear 3 divided by the threaded portion, also be supported on the elastic bearing 14, promptly movable tong arm is located to be supported for 2 liang.Because the crank of hand-held rocking bar 4 rotates easily, can realize fast rotational, movable tong arm 2 makes fast moving, clamps or unclamps pipe fitting; It is also convenient to rotate also laborsaving, the hand-held crank of crank part simultaneously, reduces labour intensity.

Claims

1, a kind of quick clamping pipe wrench comprises fixedly tong arm and movable tong arm, it is characterized in that: be provided with concentric horizontal through hole at the fixing left and right wall of supporting base of tong arm, and at the inboard thrust bearing that connects of right cinclides, and on its roof and interior horizontal bar, be provided with two concentric through holes, and a journal bearing and a radial-thrust bearing are installed respectively in two through holes, in the radial-thrust bearing of journal bearing, are provided with rotating rocking bar; The fixedly connected bevel gear in the rocking bar bottom also is provided with and is bearing in tooth thrust bearing left end and is meshed with bevel gear, its screwed hole again with the screw bevel gear of movable tong arm threads engaged.