RU2770125C1 - Device for checking the tension of belt drive belts - Google Patents

Abstract

FIELD: military technology.

SUBSTANCE: invention relates to the field of weapons and military equipment, in particular to devices for measuring the tension of the belts of the drives of a water pump, the hydraulic coupling of a fan and generators of samples of armored weapons and equipment. The device for checking the tension of the belt drive belts is characterized by the fact that it contains a housing from which retractable slats come out in two opposite directions, fixed to the housing by clamps, and in the central part of the housing there is an opening in which a spring rod freely moving and spring-loaded to the housing by a return spring, one part interacting with the belt drive belt, and another part with a converting mechanism that interacts with an indictor that shows the belt tension value when it is deflected on the dial scale.

EFFECT: fast, accurate and simplified measurement of the belt tension level of any belt transmission in any ambient temperature conditions, in case of damage or deterioration of the sensitivity of the measurer’s limbs, ensuring the reliability of measurements as a whole.

1 cl, 1 dwg

Description

The invention relates to the field of armaments and military equipment, in particular to devices for measuring the tension of the drive belts of the water pump, fan fluid coupling and generators of armored weapons and equipment.

From the prior art, a device for checking the tension of belts of a belt drive is known, when the check is carried out using a device for checking the tension of the belts, which is included in the group set of spare parts for the BTR-80 armored personnel carrier. Structurally, the device includes: a rail, a cap, a spring, a glass, a reference washer and a rod. Pressing on the belt is performed by a rod through a hole in the rail. Before measurement, the reference washer is moved to the lower position on the stem. The count is taken from the top of the puck. When measuring, the device is taken by the hand by the glass and installed on the belt, pressed on the glass, putting the thumb on the end of the cap. When a force of 4 daN (4 kgf) is reached, the spring begins to compress, and the rod moves in the holes of the glass and cap. The moment the rod starts to move will be felt with a finger, signaling that the pressing force on the belt being checked has reached 4 daN (4 kgf). In this case, the position of the reference washer on the rod will show the amount of belt deflection in millimeters. The price of division of the stem scale is 1 mm. (see Armored personnel carrier BTR-80. Technical description and operating instructions. Second edition. Moscow, military publishing house, 2001, p. 455. Open edition). This device in the claimed technical solution is selected as a prototype.

A well-known device for checking the tension of belts of a belt transmission allows you to measure the level of belt tension (measuring the deflection of the belt) when you press the belt in the middle part with a force equal to 4 kgf in any machine with a distance between the centers of the pulleys of not more than 600 mm and a deflection value of up to 25 mm . However, the disadvantage of this device can be considered the imperfection of its design, expressed in the fact that when measuring the level of tension of the belt drive with loss of sensitivity of the fingers, for example, at low ambient temperatures, or with mechanical or chemical damage to the surface of the skin of the fingers. In such cases, the measurement will be difficult or even impossible, since the sensitivity of the limbs may be impaired (impaired).

The objective of the present invention is to simplify the design of the device, improve measurement accuracy, including under conditions of low ambient temperatures, as well as mechanical or chemical damage to the surface of the skin of the measuring fingers.

The technical solution of the proposed invention is the use of a device containing a housing with retractable rails, latches, a return spring, a rod, a converting mechanism, a dial with a scale and an arrow.

The technical result of the proposed invention is a fast, accurate and simplified measurement of the belt tension level (its deflection between the pulleys) of any belt drive under any ambient temperature conditions, in case of damage (deterioration) of the sensitivity of the measuring limbs, ensuring the reliability of measurements in general.

At the same time, the essence of the operation of the device for checking the tension of the belts of the belt transmission is that when measuring the deflection of the belt of the belt transmission, the device is supported by retractable rails, fixed to the body of the device by clamps on two pulleys between which the belt is located, and the spring-loaded rod located in the body in the central parts of the device rests on the belt, pressing on it from one side. In this case, the rod, overcoming the force of the spring, acts with the other end on the converting mechanism, providing a deflection of the arrow showing the amount of belt tension on the dial scale.

показано направление выхода из корпуса 2 выдвижных реек 1.The invention is illustrated by a figure, which shows a device for checking the tension of belts of a belt drive, where: 1 - retractable rails, 2 - housing; 3 - clamps; 4 - stock; 5 - return spring; 6 - converting mechanism; 7 - dial with a scale and an arrow. Arrows

the direction of exit from the housing 2 of the retractable rails 1 is shown.

The device structurally consists of a housing in which all elements are located, from which retractable rails extend in opposite directions, resting on two belt drive pulleys at a distance depending on the distance between the pulleys. For reliable fixation to the body, retractable rails are locked with locks, which are threaded rods and a valve. In the central part of the body of the device there is a hole in which a rod is located, spring-loaded to the body and having the ability to perform reciprocating movements relative to the body. One part of the rod rests on the belt drive, and the other acts on the converting mechanism, designed to convert the reciprocating movements of the rod into the deflection of the arrow on the dial. The converting mechanism is a system consisting of gears and springs. Also on the dial there is a scale so that the deviation of the arrow by some amount shows the amount of tension in the belt drive.

Example of device operation. To measure the tension level of the belt drive, on top of its pulleys, resting, tightly put retractable rails 1 coming out of the housing 2 and fastened to it with clamps 3. The rod 4 passing through the hole in the central part of the housing 2 is spring-loaded to it by a return spring 5. One the side of the rod 4 rests against the belt, which presses on it, while the rod 4, overcoming the force of the return spring 5, reciprocates. With its other part, the rod 4 acts on the converting mechanism 6, which changes the force and deflects the arrow on the dial with the scale 7.

Thus, the proposed device allows, while simplifying the design, to ensure the accuracy of measuring the level of deflection of the belt of the belt drive under any conditions of ambient temperature, as well as in violation of the sensitivity of the measuring fingers.

Literature

1. Armored personnel carrier BTR-80. Technical description and operating instructions. Second edition. Moscow, military publishing house, 2001, p. 455. Open edition.

Claims (1)

A device for checking the tension of belts of a belt drive, characterized in that it contains a housing from which retractable rails emerge in two opposite directions, which are fixed to the housing with latches, and in the central part of the housing there is an opening in which a freely moving and spring-loaded to the housing rod is located , one part of which interacts with the belt drive belt, and the other part with a converting mechanism that interacts with the arrow, showing when it deviates on the dial scale, the amount of belt tension.

Images