KR20030083386A - Turn buckle for adjusting tension using air pressure - Google Patents

Abstract

PURPOSE: A turnbuckle for adjusting tension using pneumatic pressure is provided to prevent lowering of durability against vibration and impact without manual operation by keeping constant tension of the belt with adjusting the gap between the pulleys through pneumatic pressure. CONSTITUTION: A turnbuckle(T) is composed of a support member(10) arranged between pulleys(P) winding a belt(B); a moving member(20) combined with the support member to adjust the gap between the pulleys by internal pressure; and an air supply unit supplying pneumatic pressure to the support member. The tension of the belt is kept optimally by keeping balance of pneumatic pressure between the moving members and the support member. Air is discharged by opening a second valve(15) in increasing pressure in the support member, and pressure of air in the support member is adjusted automatically.

Description

Turn buckle for adjusting tension using air pressure}

The present invention relates to a tension control turn buckle using pneumatic pressure, and more particularly, to a tension control turn buckle using pneumatic pressure to maintain a constant belt tension connecting the pulleys using a constant pressure air pressure.

In general, turn buckles are used to reduce or increase the length between the two parts in order to maintain a constant tension between a belt or a cable that connects two points to each other to fix power or position. 1, each pulley of the crankshaft and the compressor (C) and the radiator (R) connected to each other via the belt (B) so that the turnbuckle (T) transmits power of the engine (E). It is mounted between the P) to reduce or increase the length to adjust the tension of the belt (B).

Here, the turnbuckle T is a pipe-shaped support rod 1 made of hollow, as shown in Figure 2, the hinge is coupled to one end of both ends of the support rod 1 and the other end is fixed to the mounting portion, respectively Nuts that are fixed to the rod 2 and the support rod 1 and screwed with the male screw shaft 2a of the hinge rod 2 to insert or withdraw the hinge rod 2 from the support rod 1 during rotation. (4) and the adjusting nut (4) and the support rod (1) are welded and fixed, respectively, and consist of a connector (3) having a screw hole screwed with the male screw shaft (2a) of the hinge rod (2).

At this time, the male screw shaft (2a) of the hinge rod (2) is the left side of the male screw shaft (2a) of the left side with respect to the support rod (1), the other male screw shaft (2a) is the right screw to adjust the adjustment nut (4) Even if rotated in one direction, the hinge rod (2) is pulled out or inserted at the same time from the support rod (1) to increase or decrease the distance between the two parts to adjust the tension of the belt (B).

However, such a turnbuckle T requires a considerable number of parts for its function and its fabrication process also requires a somewhat larger number of welds K for fixing the parts, i.e., both sides of the support rod 1, respectively. It consists of a pair of hinge rods 2 having male threads and a pair of connectors 3 and an adjusting nut 4 each having a screw hole, while the adjusting nut 4 and the connector 4 are welded to each other. In addition to the fixing, the connector 3 and the supporting rod 1 must be welded to each other, and if a vibration and an impact are continuously applied according to the operation of the engine such as a bus, cracks are generated in the welded part K. There is a problem that durability degradation occurs.

In addition, such a turnbuckle (T) has to rotate the adjustment nut (4) using a suitable tool (spanner) when adjusting its length, there is an inconvenience that the correct tool that fits the dimensions of the nut (4) must be used. As shown in FIG. 1, it is not easy to secure a work space due to the feature of being mounted in a narrow space, resulting in a very bad workability.

Accordingly, the present invention has been invented in view of the above, by adjusting the interval between the pulleys around which the belt is wound using air pressure to maintain a constant tension of the belt at all times for durability reduction or tension control due to vibration and impact. The purpose is to avoid manual intervention.

In order to achieve the above object, the present invention provides a support member provided between the pulleys with the turnbuckles wound around the belt at predetermined intervals, and coupled to the support members to adjust the distance between the pulleys by internal pressure. Characterized in that the air supply means for supplying a predetermined or more air pressure into the moving member and the support member.

1 is a configuration diagram of the engine portion for the bus generally used turn buckle

2 is a configuration diagram of a conventional turn buckle for tension adjustment

3 is a configuration diagram of the turn buckle for tension control using the air pressure according to the present invention

<Description of Symbols for Main Parts of Drawings>

1: support rod 2: hinge rod

2a: Male shaft 3: Connector

4: Adjustment nut 10: Support member

11: horizontal rod 12: vertical rod

13: Moving hole 14, 15: First and second valve

16: elastic member

20: main moving member 20 ': driven moving member

21,21 ': Moving rod

22,22 ': Roller 30: Controller

40: air compressor 50: control valve

B: Belt C: Compressor

E: Engine K: Welded part

P: Pulley R: Radiator

T: Turnbuckle

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a diagram showing the configuration of the turn buckle for tension control using the air pressure according to the present invention, the turnbuckle (T) of the present invention is provided between the pulley (P) wound belt (B) at a predetermined interval from each other. The support member 10 and the movable member 20 coupled to the support member 10 to adjust the gap between the pulleys P by the internal pressure and the air pressure into the support member 10. It consists of the air supply means to supply.

Here, the support member 10 is formed vertically toward the belt (B) wound on the pulley (P) on the horizontal rod 11 positioned between the center of the two pulleys (P) and the center of the horizontal rod (11). It is made of a vertical rod 12 to form a cross (+) as a whole, the inside of the rod (11, 12) is a cross (+) shape so as to communicate with each other while the moving hole 13 is maintained a constant air pressure Is formed.

In addition, the moving member 20 is coupled to the end of each of the rods (11, 12) forming a cross (+) support member 10 to adjust the tension of the belt (B) while being drawn out and inserted, the horizontal The main moving member 20 provided at each end of the rod 11 is a moving rod 21 received in the opening hole 13 and moved to the pulley P in response to the supplied air pressure, and the moving rod 21 It is fixed to the center of the pulley (P) at the end of the) consists of a roller 22 to increase or decrease the distance between the pulley (P).

In addition, the driven member 20 provided at each end of the vertical rod 12 is a movable rod 21 'which is moved toward the belt B by receiving the air pressure received and supplied into the opening hole 13, It consists of the roller 22 'which adjusts the tension degree of the belt B, supporting the belt B at the end of this moving rod 21'.

Here, each of the moving rods 21, 21 'of the main and driven member 20, 20' to the rod (11, 12) while receiving the air pressure evenly in the moving hole 13 of the support member 10 The rollers 22 and 22 'are combined with the moving rods 21 and 21' so as to be freely rotated by the pulley P and the belt B, respectively. Of course.

On the other hand, the main moving member 20 is a coil spring built in the longitudinal direction in the moving hole 13 of the horizontal rod 11 to maintain the distance between the pulley (P) for the minimum tension even if air pressure is not supplied Of course, the elastic member 16 of the shape is subjected to continuous pressing force toward the pulley (P).

In addition, the air supply means is supplied by the controller 30 and the control valve 50 for operating the control valve 50 for opening and closing the path of the air compressor 40 which is operated together with the operation of the engine The air pressure in the first valve 14 provided in the horizontal rod 11 and the moving hole 13 of the supporting member 10 is set to be equal to or higher than the air to enter the moving hole 13 in the supporting member 10 ( When raised to 10Kgf) is made of a second valve 15 provided in the horizontal rod 11 to discharge the air inside.

Here, the first and second valves 14 and 15 are, of course, check valves for controlling the flow in one direction.

Hereinafter, the operation of the present invention will be described in detail with reference to the accompanying drawings.

The turnbuckle T of the present invention is a roller 22 of the main moving member 20 provided on the horizontal rod 11 of the support member 10, that is, between the pulley (P), the belt (B) is wound The belt is coupled to the center of the pulley (P) and wound between the pulleys (P) with the roller (22 ') of the driven member 20' provided on the vertical rod 12 of the support member ( Support B) to maintain some tension.

At this time, the main moving member 20 acts to increase the interval between the pulley (P) by the pressing force by the elastic member 16 provided in the support member 10 to the tension of the belt (B) within the allowable range Of course it is.

Subsequently, the turn buckle T adds a tension using air to the pressing force of the elastic member 16 to maintain the tension of the belt B, and thus maintains the optimum tension at all times. When 30 opens the control valve 50 and supplies air from the air compressor 40 to the moving hole 13 of the support member 10 through the first valve 14, the area within the moving hole 13 is opened. The pressure is increased by the supplied air, whereby the moving rod 21 of the moving member 20 accommodated in the moving hole 13 is moved toward the pulley P by the increased pressure, and the roller 22 Push the pulley (P) combined with the opposite direction to widen the gap.

At the same time, the driven member 20 'accommodated in the vertical rod 12 of the support member 10 is moved to push the belt B by the increased pressure in the moving hole 13, of course.

At this time, the belt (B) is intended to be narrowed by the movement of the pulley (P) to be opened by the main moving member 20 and the width thereof is to be opened by the driven member 20 ' Accordingly, the tension of the belt B is always optimally maintained by the balance between the air pressure of the main moving member 20, the driven moving member 20 'and the support member 10.

Here, of course, the air pressure in the support member 10 when the tension of the belt B is optimally maintained is about 10 kgf.

In addition, when the air pressure in the support member 10 exceeds 10kgf, the second valve 15 provided in the horizontal rod 11 is opened by the excess air pressure in the moving hole 13 to discharge the air to the outside. Accordingly, the air pressure in the support member 10 is always automatically adjusted in the 10Kgf region.

On the other hand, the air supply to the turnbuckle (T) has no effect on the operation even if the first valve 14 directly connected to the air compressor 40 without the controller 30 and the control valve 50, that is, the engine and When the air compressor 40, which is operated together, supplies air to the moving hole 13 in the support member 10 through the first valve 14, the main and driven members 20 and 20 'are operated as described above. While moving by air pressure, the tension of the belt B is adjusted and maintained, while if the air pressure in the moving hole 13 exceeds 10 kgf, the second valve 15 is opened to discharge air to the outside. Of course, the air pressure control of the turnbuckle (T) can be made of simply two check valves (14, 15), of course.

As described above, according to the present invention, the turnbuckle is composed of a moving member for adjusting the gap between the pulleys and the tension of the belt by the pressure of the air supplied to the support member provided between the pulleys wound around the belt at a predetermined interval from each other Since the tension of the belt is always kept constant through the air pressure, there is no effect of requiring durability at all due to vibration and shock or manual operation for tension control.

Claims (8)

The support member 10 provided between the pulleys P on which the belts B are wound at a predetermined interval from each other, and is coupled to the support member 10 to adjust the distance between the pulleys P by the pressure inside. Turn buckle for tension control using the air pressure consisting of a moving member 20 and the air supply means for supplying a predetermined or more air pressure into the support member (10). 2. The support member (10) according to claim 1, wherein the support member (10) has a horizontal rod (11) positioned between the centers of two pulleys (P) and a belt (B) wound on the pulley (P) on the center of the horizontal rod (11). It consists of a vertical rod 12 is formed vertically toward the cross shape (+) as a whole, the inside of the rod (11, 12) to form a cross (+) to communicate with each other while maintaining a constant air pressure Turn buckle for tension control using air pressure, characterized in that (13) is formed. The method of claim 1, wherein the moving member 20 is composed of a main moving member 20 provided at each end of the horizontal rod 11 and a driven moving member 20 provided at each end of the vertical rod 12 The movable members 20 and 20 'are respectively provided with movable rods 21 and 21' which are moved toward the pulley P or the belt B in response to the air pressure received and supplied into the opening hole 13, Turn buckle for tension control using pneumatic pressure, characterized in that made of rollers (22, 22 ') fixed to the center of the pulley (P) at the ends of the moving rod (21, 21') or supporting the belt (B). The tee (T) of claim 3, wherein the movable rods (21, 21 ') are not separated from the rods (11, 12) while being evenly subjected to air pressure in the movable holes (13) of the support member (10). The rollers 22 and 22 'have a magnetic cross section, and the rollers 22 and 22' are coupled to the moving rods 21 and 21 'so as to be freely rotated by the pulley P and the belt B, respectively. Adjustable turn buckle. According to claim 3, The main moving member 20 is built in the longitudinal direction in the moving hole 13 of the horizontal rod 11 to maintain the distance between the pulley (P) for the minimum tension even if air is not supplied Turn buckle for tension control using pneumatic pressure, characterized in that the elastic member 16 receives a constant pressing force toward the pulley (P). According to claim 1, wherein the air supply means is an air compressor (40) which is operated in conjunction with the operation of the engine, and the air supplied in direct connection with the air compressor 40 is supplied to the moving hole (13) in the support member (10) When the air pressure in the first valve 14 and the moving hole 13 of the support member 10 provided in the horizontal rod 11 is increased to a predetermined level or more, the horizontal rod 11 discharges the internal air to the outside. The turn buckle for tension control using pneumatic pressure, characterized in that consisting of a second valve (15) provided in 11). The turn buckle for tension control according to claim 6, wherein the first and second valves (14, 15) are check valves for controlling the flow in one direction. 7. The air valve according to claim 6, wherein a control valve (50) under the control of the controller (30) is provided between the air compressor (40) and the first valve (14) to open and close the air path. Turn buckle for tension adjustment.