SU1129065A1 - Nut driver for pipe faucet joints - Google Patents

Abstract

1, WRENCH FOR WRINK PIPE CONNECTIONS, comprising a housing, an actuator housed therein, a ratchet wrench, kinematically connected to it, and a wrench with a handle spring-loaded relative to the housing, designed to interact with the head of the element of the clamped threaded joint, characterized in that . In order to reduce overall dimensions, the ratchet wrench is made in the form of a sleeve having a stepped central hole along the length, an axial through groove and a diametrically located and directed in opposite directions tangential rectangular blind holes that extend into the hole of a larger step and placed in blind holes and rollers of a larger diameter, which are spring-loaded to a part of a hole of a larger diameter. 2 .. A wrench according to claim 1, characterized in that the sleeve i is placed in the housing rotatably on the outer surface (L has a toothed weave, and the drive is in the form of a pneumatic guide, the stem of which has a toothed rack interacting with a toothed crown.

Description

: O: O O 9d SP

The invention relates to a mechanized portable tool, in particular to wrenches for pipe end connections, and can be used in various industrial fields.

A wrench is known for end-connections of pipes, comprising a housing, a drive located therein, a gear wrench, a gear that connects the latter with the drive, and a device for installing and fixing the gear wrench to the open position L.

The disadvantage of this wrench is that the weight of the wrench and the reactive torque that occurs during tightening of threaded connections are perceived by the hands of the operator, and this leads to tangibility and reduced productivity.

The closest to the technical essence of the invention is a wrench for end connections, comprising a housing, an actuator housed therein, a kinematically associated ratchet wrench head and a hinged wrench with a handle relative to the housing, designed to interact with the head An element of a threaded threaded connection, the Tetrailing nut head has two angled levers that are hinged respectively to the rods. pneumogram & cylinders, its turnkey head is made with a through hexagonal hole for the head of the element to be tightened threaded connection 2}

; However, such a wrench has large dimensions and low productivity.

The purpose of the invention is to reduce overall dimensions and increase productivity. ; The goal is achieved by the fact that in a wrench for end pipe joints, comprising a housing, a drive housed therein, a kinemat | Česky ratchet wrench and a spring-wrench wrench with a handle, spring-loaded relative to the housing, designed to interact with the head of a tightened threaded element connections, a ratchet wrench is made of an IB-type sleeve, which has a central hole that is stepped along the length, an axial, through-gap and is diametrically located and directed in opposite directions tangential rectangular blind holes that enter the hole of a larger step, and rollers that are located in blind holes and are spring-loaded to a part of the hole of a larger diameter.

In addition, the sleeve is placed in the housing with the possibility of rotation and on the outer surface has a gear rim, and the drive is made in the form of a pneumatic hydraulic cylinder, the stem of which has a gear, rail, interacting with the gear rim.

FIG. 1 shows a wrench, general view; FIG. 2 is a section A-A in FIG. 1 in FIG. 3 is a section V-B n FIG. one; in fig. 4 shows a section B-B in FIG. 1, FIG. 5 is a view D in FIG. 2

A wrench for end connections includes a housing 1 that is rotatably positioned therein, an internal key 2, is kinematically connected to the actuator 3 and an open-ended wrench 4 with a handle 5 that is spring-loaded relative to the housing. The precrystal wrench 2 is made in the form of a sleeve 6 that has a toothed ring 7, a central stepped hole 8, a hole 9 of a larger step, the diameter of which is equal to the circumference described around the nut 10 of the threaded connection to be tightened, the diametral through groove 11, diametrically located and directed in opposite direction rip rectangular side tangential blind holes 12, exiting through the hole 9 more steps to half of their width, and arranged in the openings 12 of rollers 13 which are urged by springs 14 toward the opening. 9. Between the springs 14 and the rollers 13 are placed the pushers 15. At the end of the sleeve 6 is fixed a cheek 16, having the same profile as the sleeve 6..

In order to prevent the rollers 13 from falling out of the holes 12, protrusions 17 are provided at their ends, which interact with grooves 18 and 19 formed in the cheek 16 and sleeve 6, respectively.

The actuator 3 is performed in the form of a pneumatic cylinder 20 with a rod 21 having a gear rail 22, interacting with the ring gear 7. The gear rail 22 interacts with the support

bearing 23 mounted on housing 1. The wrench 4 is spring-loaded with a torsion spring 24, one end of which is fixed to the pin 25 and the other in the slot 26 of the axis 27, s around which the wrench 4.j is turned

. The spanner 4 has a shoulder 28 that interacts with the end face of the fitting 29 of the threaded threaded connection.

In case 1, a locking screw 30 is fixed, which interacts with a wrench key 4, Case 1 is made with a slot.15

The wrench works as follows.

In the initial position, the slot-shed 11 coincides with the slot. The wrench is retracted and secured with screw 30. In order to tighten the choke-face connection, groove-shed 11 through the slot slides over the nut to of the threaded connection being connected.

After releasing the locking screw-25 and 30 horn wrench 4, under the action of the spring 24, rotates around the washer 27 and rests against the shoulder 28 into the end face of the fitting 29, thereby fixing the wrench on the choke-end connection, freeing the hands of the worker Pressing the trigger button ( not shown) i The rod 21 with the rack 22 begins to reciprocate, turning the sleeve 6 at an angle of at least 60. When the working stroke, the rollers 13 are in the extended position and provide the expression of the sleeve 6c with the nut 10, as; the distance between the rollers 13 is less than the diameter of the circumference of the nut 10, and the planes of its faces, interacting with the rollers 13, with the walls of the blind holes 12 form smaller angles. of the friction angle. With the free course of the face of the nut 10, the rollers 13 are embedded in the holes 12 ,. but with the passage. vertices of faces 10 rollers 13 are pushed by springs 14 through pushers

15 in the direction of the hole 9, ensuring the coupling of the sleeve 6 with the following faces of the nut 10 during the subsequent working stroke. The protrusions 17 of the rollers 13 move in the grooves 18 and 19. The torque is perceived by the housing 1 through the open-end wrench 4. When the fitting 29 with the nut 10 approaches, during the working stroke, the opener 4 turns around the axis 27. The transverse force acting on the gear rack 22 when it interacts with the ring gear 7 during the working stroke, it is perceived by the thrust bearing. 23, which eliminates the bending of the tooth. The rack 22. When the maximum tightening torque of the threaded connection is reached, the trigger button is released; tion cylinder and momeit tightening fades. The spanner 4 is retracted from fitting 29 by handle 5 and secured with locking screw 30.

Then turning the wrench in the direction of screwing the nut 10 at an angle of not more than 60 is combined; Puzzy 11 with a slot, body 1, and axial. By moving the wrench is removed from the nut 10, through the slit it is retracted from the pipe and transferred ij to the next choke-face connection. .

By performing the ratchet; of a key in the form of a sleeve, having a central hole that is stepped along the length, an axial through-hole groove and diametrically located and directed in opposite directions tangential blind holes that extend into the hole of a larger step, and that are sprawled into blind holes and loaded to a part of the larger hole j diameter rollers, made on the outer surface of the sleeve gear ring, and the drive - in, in the form of a pneumatic cylinder, the rod of which has a gear r., interacting with the gear ring sleeve, malign Wrench s increases productivity.

/ and

tS / 4 7 "

Phi.1

ten

r8

AA

one,

25 2 26 27

2

W

6-6

FIG L

View G 2it

FIG. 5 2B 27

Claims (2)

1. WRENCH FOR SOCKET PIPES CONNECTIONS, comprising a housing, a drive housed therein, a ratchet wrench kinematically associated with it, and an open-end wrench with handle, designed to interact with the head of an element of a tightened threaded connection, characterized in that, for the purpose of to reduce overall dimensions, the ratchet wrench is made in the form of a sleeve having a central hole stepwise along the length, an axial through groove and diametrically located and directed to otivopolozhnye rectangular side tangential blind holes extending into the hole more steps, housed in the second blind bores and spring-loaded to the opening portion larger diameter rollers. 2 „Wrench pop. 1, characterized in that the sleeve is rotatably housed in the housing and has a ring gear on the outer surface, and the drive is made in the form of a pneumohydrocylinder, the rod of which has a gear rack interacting with the ring gear. . SU 1129065