SU1147555A1 - Power nut-driver - Google Patents

Abstract

1. WELDER, comprising a housing, a spindle located therein with a working head and a ratchet mechanism, a ram cylinder, whose fflTok is connected by means of levers with a ratchet mechanism, and a supporting element, characterized in that, in order to ensure ease of operation in hard-to-reach places, the housing is made of two parts installed with the possibility of rotation of one part relative to the other, fixing between them, and in the part of the body from the side of the working holois a groove is made interacting with the supporting element.

Description

2, A wrench according to claim 1, characterized in that, for the purpose of

114755.5.

reduced in size, it is equipped with an elastic ring that covers the sewn dogs.

The invention relates to a portable mechanized tool for assembling or disassembling a group of threaded joints, in particular, a wrench for unscrewing (wringing) the nuts of car threshing cars, and can be used for repair and installation work in various sectors of the national economy. A device for tightening threaded connections is known, which contains permanently outside the area of the assembled product placed on the plate, the power cylinder, the rod of which through the rod acts on the lever ij pivotally connected to it. However, in this device, the rigid mounting of the ram and the object does not allow the closure to be brought closer to the product. The closest to the invention is a nut wrench containing a core, a spindle placed in it with a working head and a ratchet mechanism, a ram cylinder, the rod of which is connected by means of levers to the ratchet mechanism, and a support element in the form of a bracket that is pivotally mounted on the plate around its axis 21, the disadvantages of the known device are the oriented position of the body and the lever, which does not allow it to be used in hard-to-reach places, since in the direction of the body may It has a significant size of the ratchet device. The purpose of the invention is to provide ease of operation in hard-to-reach places and reduce the size of the goal that is achieved, in a nut wrench containing a case the spindle located in it with a working head and a ratchet mechanism, a ram cylinder, the rod of which is connected by means of levers to the ratchet Mechanism, and the supporting element made of two parts installed with the possibility of rotation of one part relative to the other fixed with each other, and in the part of the body from the working head is made a groove, the interaction vuyuschy to the support member. In addition, the wrench is provided with an elastic ring covering the dogs. FIG. 1 shows a wrench, a general view, in FIG. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. 2 in FIG. 4 shows a section B-B in FIG. 2. The wrench includes a housing 1, disconnected into two parts 2 and 3, in which the spindle 4 is placed, at one end of which the ratchet mechanism 5 is fastened, and on the other end is a replaceable working head 6, fixed from locking 7 with a catch, the ratchet mechanism 5 is located in an extreme position for the possibility of its quick rotation by 180 ° in case of the necessity of reversing the wrench. A bracket 8 is attached to part 2 of the housing 1, on which the power cylinder 9 (pneumatic chamber) is attached, which is connected to the ratchet mechanism 5 by the lever 10. The power cylinder 9 has an air valve 11 with a limit switch 12 for cyclically supplying air. Part 3 of the housing 1 has a latch 13 to prevent the spindle 4 from turning back when the ratchet mechanism 5 is idling with slight friction in the thread, and a groove 14 interacting with the flag 15 of the support element 16. The parts of the housing 2 and 3 are made with teeth 17 cam-disc type, which allows fixing the parts of the body between themselves and adjusting the angle between the bracket 8 and the flag 15 of the support element 16. 3 I will enter the significance of the efforts transmitted by the ratchet mechanism 5, in it there are a number of dogs 18 that are held in the bottom zdah ring 19 elastichnm ring 20. The ring 19, the ratchet wheel 21, the elastic ring 20 are enclosed in a housing 22 consisting of two plates, incoming into engagement with lever 10. The wrench operates in the following manner. On the spindle 4 of the wrench wear interchangeable working head 6, corresponding to the size of the nut to be removed. On the adjacent nut they put the support element 16, For the bracket 8, the part 2 of the housing 1 is raised with a sylvan cylinder 9 with the ratchet mechanism 5 until the teeth come out of the teeth of 17 parts 2 and 3 of the housing 1, In this position of the wrench the working head 6 55. is unscrewed gui (screwed) nut, the reference point with the groove 14 on the flag 15 of the support element 16, and the bracket 8 with the power cylinder - on the free zone. By pressing down on the bracket 8, the teeth of the 17 parts 2 and 3 of the housing 1 are engaged with each other. After performing the above operations, the wrench is ready for operation, it is started up, after which it begins its cyclical work on tightening or unscrewing the nut. The application of the proposed design of the wrench allows you to have relatively small and light, powerful, portable, and easy to use wrenches in hard-to-reach places on construction sites.

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Claims (2)

1. A WRENCH, comprising: a housing, a spindle housed therein with a working head and a ratchet mechanism, a power cylinder, the rod of which is connected by means of levers with a ratchet mechanism, and a support element, characterized in that, in order to ensure ease of use in hard-to-reach places , the casing is made of two parts, mounted to rotate one part relative to the other, fixed to each other, and in the casing part from the side of the working head, a pae interacting with the supporting element is made. ? & K1 1147555 A 2. Wrench on π. 1, characterized in that, in order to reduce the size, it is equipped with an elastic ring covering the dog.