RU218381U1 - Socket wrench - Google Patents

Abstract

The utility model relates to the field of railway infrastructure maintenance, namely to hand tools for maintenance of railway tracks. The socket wrench device is a metal shaft, on one side of which a drive handle with a ratchet mechanism mounted on it is perpendicular, and on the opposite side a 36 mm working wrench head is attached. The device of the mechanism of the socket wrench-ratchet contains a gear, a gear stopper, which ensures gear locking in one direction and slipping in the other. Switching the position of the stopper is carried out by the switch by means of a spring, due to which the gear is slipped relative to the stopper. The ratchet mechanism allows you to rotate the nuts of the terminal bolts and travel screws with the required tightening force in one direction with slipping in the other direction, and when the switch is moved, the directions of rotation of tightening and slipping change. The main essence is to retrofit the used standard socket wrench with a ratchet mechanism. The technical problem to be solved by the claimed utility model is the low speed of the process of unscrewing and tightening the nuts of the terminal bolts and travel screws and the inconvenience of using the existing standard socket wrench for these operations.

Description

Technical field

The proposed utility model relates to the field of railway infrastructure maintenance, namely to hand tools for maintenance of railway tracks.

State of the art

Known socket wrench currently used on the network of railways for the production of track work for unscrewing and screwing nuts terminal-embedded bolts and travel screws. This socket wrench is not equipped with a ratchet mechanism that allows the nut to be rotated in one direction with slippage.

Also known is the invention, which is mounted on a portal frame wrenches, combined with socket wrenches. This invention is a means of small-scale mechanization, it is used mainly for conveyor-type work when assembling a rail-sleeper grid. The disadvantage of this invention with respect to the proposed utility model is its significantly larger dimensions, the installation of a complex device on the frame and the need for an external power source to drive the wrenches. RU 2 376 412, E01B 29/28 (2006.01).

Known socket wrench for tightening threaded connections with a given torque. It differs from the claimed utility model by the presence of a device for limiting torque, respectively, by design, functionality and end effect for a worker using a hand tool. The disadvantage of this design is its complexity, increased in comparison with the claimed utility model, the number of components. The claimed utility model is designed to facilitate manual labor and optimize the workflow of unscrewing and screwing nuts of terminal bolts and travel screws, by eliminating the rearrangement of the socket wrench to a new position when the angle of rotation is acceptable based on the physical capabilities of the worker. RU 8646, B25B 23/14 (1995.01).

Known socket wrench for fastening railway rails to sleepers. It differs from the claimed utility model by the presence of a planetary gearbox, respectively, by design, functionality and end effect for a worker using a hand tool. The claimed utility model is designed to improve ergonomics during the operation of tightening nuts by slipping in one direction and turning the spindle in the other with the possibility of changing the direction of slipping and turning, and the utility model with patent RU 19491 serves to reduce the force applied to the wrench handle for tightening the threaded connection with a given torque. The disadvantage of this design is its complexity, increased in comparison with the claimed utility model, the number of components. The claimed utility model is light in weight, consists of simple parts (a gear mounted on a shaft, placed in one housing with a U-shaped stop, a switch for the direction of rotation and slip, a spring that provides connection between the switch and the stop), and is maintainable in field conditions of work on the haul. RU 19491, B25B 13/14 (2000.01).

Also known is a socket wrench with a given limit torque, which is a modified product described earlier in patents RU 8646 and RU 19491. The key RU 19492 is used to tighten threaded connections with a given limit torque, has in its design a ratchet wheel in contact with a cracker, a spring-loaded set belleville springs, which are absent in the design of the claimed utility model. RU 19492, B25B 13/14 (2000.01).

Described in patents RU 8646, RU 19491, RU 19492, socket wrenches incorporate mechanisms that differ in design from the ratchet mechanism of the socket wrench of the claimed utility model.

The technical problem to be solved by the claimed utility model is the low speed of the process of unscrewing and tightening the nuts of the terminal bolts and travel screws and the inconvenience of using the existing standard socket wrench for these operations.

Disclosure of the essence of the utility model. The socket wrench device is a metal shaft, on one side of which a drive handle with a ratchet mechanism mounted on it is perpendicular, and on the opposite side a 36 mm working wrench head is attached. The device of the mechanism of the socket wrench-ratchet contains a gear, a gear stopper, which ensures gear locking in one direction and slipping in the other. Switching the position of the stopper is carried out by the switch by means of a spring, due to which the gear is slipped relative to the stopper. The ratchet mechanism allows you to rotate the nuts of the terminal bolts and travel screws with the required tightening force in one direction with slipping in the other direction, and when the switch is moved, the directions of rotation of tightening and slipping change. The main essence is to retrofit the used standard socket wrench with a ratchet mechanism.

Drawings of Fig. 1 and FIG. 2. In FIG. 1 shows a general view of the socket wrench. The socket wrench device according to FIG. 1 represents a shaft (1), a drive handle (2), a working wrench head (3), a ratchet mechanism (4). In FIG. 2 shows the ratchet mechanism. The device of the mechanism of the socket wrench-ratchet figure 2 contains a gear (5), a gear stopper (6), which provides locking of the gear in one direction and slipping in the other. Switching of the position of the stopper is carried out by the switch (8) by means of the spring (7), due to which the gear is slipped relative to the stopper.

Implementation of the utility model

The existing level of technological equipment allows the claimed utility model to be manufactured. At present, a prototype of the utility model of the Allen ratchet wrench has been independently manufactured. The prototype is not made of structural materials and has an increased component wear factor. Use is for demonstration purposes only. Utility model A socket wrench has the following industrial application: for the production of track work for unscrewing and tightening nuts of terminal bolts and travel screws, while this process is simplified and time-optimized by equipping it with a ratchet mechanism.

Claims (2)

1. A ratchet wrench, characterized in that it includes a metal shaft, on one side of which a drive handle is perpendicularly located with a ratchet mechanism mounted on it, containing a gear, a gear stopper with its switch and a spring, ensuring gear locking in one direction and slipping to the other, and a working wrench head is attached to the opposite side of the shaft. 2. A ratchet wrench according to claim 1, characterized in that a ratchet mechanism device is mounted on the handle, which allows you to rotate the nuts of the terminal bolts and travel screws with the necessary tightening force in one direction with slipping in the other direction, and when the switch is moved the directions of rotation of tightening and slipping are reversed.

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