KR100230640B1 - Hoist for air balance - Google Patents

Abstract

The present invention is designed to maintain a constant lifting speed of a wire wound or unwound on a reel by a second piston that is moved forward and backward with the first piston by air pressure inside the hoist.

The first piston moves forward by the pressure of air flowing into the first piston chamber formed inside the housing of the hoist, and is connected to the first piston and the fixed plate. The wire is rotated by the operation of the ball nut and the ball screw tube. A reel that can be lifted up and rolled up without winding the reel, and the reel rotates at a proper pressure even when the wire is unwound from the reel by the reverse rotation of the reel. A second piston which is coupled to the piston chamber to move forward and backward, a connecting means of a second piston for connecting the second piston to the first piston to make the same forward and backward movement, and the second piston and the first An air hole for supplying air into the second piston chamber and the first piston chamber to which the piston is coupled to move the second piston and the first piston in the same way. Provides a hoist using the air balance, it characterized in that a means.

Description

Hoist with Air Balance

The present invention relates to a hoist capable of lifting an object and the like, in particular, a constant raising and lowering speed of a wire wound or unwound on a reel by a second piston that is moved forward and backward with the first piston under the pressure of air inside the hoist. It relates to a hoist using an air balance that can be maintained.

The configuration of a hoist capable of lifting up and down vertically without changing the position of the wire by performing linear movement and rotational movement of the reel using a conventional piston and ball nut is shown in FIG. 1.

The conventional hoist 1 has a ball screw 14 that is fixed by a high information bolt 16 to a central portion of a cap 3 blocking both sides of the housing 2, and the ball screw 14. The ball nut 15 is coupled to the rotation and linear motion at the same time, and the wire nut 12 is fixed to the outside of the ball nut 15 to the winding groove (9) while rotating and linearly moving in the same manner as the ball nut 15 Reel (8) capable of elevating the ring (13) attached to the end of the wire 12 by the operation of winding or unwinding), and the reel to push and pull the reel (8) to rotate and linear movement (8) is connected to the bearing (10) and has a piston (7) for moving back and forth inside the piston chamber (6) by the pressure of the air supplied to the air inlet (4) of the cap (3) .

Referring to the operation and effect of the conventional hoist as described above are as follows.

First, the hoist (1) is coupled to the rail is installed on the ceiling of the workshop is installed to move along the rail.

Then, the hook 13 is attached to the hook 13 attached to the end of the wire 12 of the hoist 1 so as to hook the object.

When lifting an object in the above state, first, the ring 13 attached to the end of the wire 12 must reach the ground or the object seated on the working die.

Therefore, when the operator presses the ring lowering button, the air inlet 4 of the cap 3 is opened and the ring 13 is lowered as shown by the virtual line of FIG. 1 by the weight of the ring 13 and the hook. Lose.

As described above, when the ring 13 is lowered, the wire 12 is unrolled from the winding groove 9 of the reel 8 while rotating the reel 8.

Since the rotation of the reel 80 is fixed to the ball nut 15, the ball nut 15 is linearly moved along the ball screw 14 as the ball nut 15 is rotated.

Then, the piston (7) connected to the ball nut (15) and the bearing (10) by the movement of the ball nut (15) of the guide tube (5) in the piston chamber (6) in the housing (2) The guide is in a state of being moved as represented by the virtual line of FIG.

While the piston 7 is moving, the hook 13 and the hook at the end of the wire 12 are lowered to the position where the object can be hooked.

Then, the hook 13 is hooked on the object and this time the ring lifting button is pressed.

When the ring lifting button is pressed, air is supplied to the air inlet and outlet 4 formed in the cap 3 on one side of the housing 2 to be introduced into the piston chamber 6.

The air introduced into the piston chamber 6 pushes the piston 7 and the piston 7 is in a state of linear movement while being guided by the guide tube 5 from the virtual line position to the solid line position.

In addition, the reel 8 is linearly moved by the movement of the piston 7, and at the same time, the ball nut 15 also tries to linearly move along the ball screw 14.

However, the ball nut 15 has a force to rotate by the balls therein, and eventually the rotational motion and the linear motion.

Therefore, the wire 12 is wound into the winding groove 9 by the rotational movement of the reel 8 so that the object hanging on the hook 13 or the hook at the end of the wire 12 can be lifted to an arbitrary height. do.

As described above, an object raised to an arbitrary height may be moved to another position or coupled to another object.

The conventional hoist 1 as described above can perform more stable and effective traction work because the lifting operation is performed in a state where the position of the wire 12 does not change, but has some problems.

That is, the hoist 1 uses the pneumatic pressure filled in the piston chamber 6 when the wire 12 is wound on the reel 8 (up), and the above air pressure is released when the hoist 1 is loosened (down). We use weight of thing while taking off.

Therefore, when lifting the above object, because it takes the weight of the object, it is lifted at a relatively constant speed, but when the object is lowered, the object is lowered irregularly.

It is common to cause a shake in an object due to the irregular fall as described above, and the shake caused a safety accident in the workplace.

In addition, the shaking is very difficult to match the position and the object to be assembled at the time of the assembly work, and since the assembly work was only possible to calm down the shake, such as excessive work of the assembly time, productivity and productivity is reduced, etc. Had a problem.

Particularly, when the hook 13 or the hook is lowered without hooking the hook 13 and the hook coupled to the end of the wire 12, the reel 8 is lifted by the weight of the hook 13 and the hook. Since the weight of the ring 13 and the hook is light, it cannot be lowered unless the air supplied in the piston chamber 6 is released.

Therefore, the hook 13 and the hook can be lowered until the worker pulls it down, so it can not be a very cumbersome and inconvenient work, and there is also a problem that can not be efficient work.

In addition, when lifting the hook 13 or the hook or the like without hooking the hook 13 or the hook or the like, the piston 7 is quite fast because the load is not applied to the hook 13 or the hook. The reel 8 is also wound up while the wire 12 is wound rapidly.

Therefore, since the hook 13 and the hook are raised very quickly, there was a high risk of a safety accident.

Of course, there is also a hoist equipped with a control control between the reel (8) and the housing (2) in order to prevent the ring 13 and the hook to rise quickly as described above.

However, the above-mentioned control control is dangerous because it is braked by the ratchet in a state in which a certain section is rapidly raised instead of the whole section, but rather the additional cost due to the installation of the above-mentioned control control is at the same time. There is a problem that the life of the hoist is shortened due to the wear phenomenon of the housing.

The present invention to solve and solve such a conventional problem,

It maintains the lifting speed of the wire to raise or lower the goods by lifting and unwinding while lifting or unwinding on the reel of the hoist, so that it can work more safely and efficiently and provide improved workability and productivity. .

1 is a cross-sectional view showing a conventional hoist

2 is a cross-sectional view showing the present invention hoist

3 is a cross-sectional view showing the operation of the present invention hoist

<Code Description of Main Parts in Drawing>

101: hoist 102: housing

103: cap 104: the first air entrance

105: connector 106: the first air supply hole

107: first piston chamber 108: first piston

109: second air supply hole 110: third air supply hole

111: fixing piece 112: support tube

113: fourth air supply hole 114: moving pipe

115: 5th air supply hole 116: 2nd piston chamber

117: 2nd piston 118: 2nd air entrance

119: fixed plate 120: bearing

121: reel 122: winding groove

123: ball nut 124: ball screw pipe

The configuration of the present invention will be described in detail with reference to FIG.

The first piston 108 is advanced by the pressure of the air flowing into the first piston chamber 107 formed inside the housing 102 of the hoist 1 and connected to the first piston 108 and the fixing plate 119 at the same time. The reel 121 which can be lifted and wound by the winding groove 122 without changing the position of the wire 126 while being rotated by the operation of the ball nut 123 and the ball screw tube 124, The second piston chamber of the ball screw tube 124 so that the reel 121 can be moved while rotating the reel 121 at a proper pressure even when the wire 126 is released from the winding groove 122 by the reverse rotation of the reel 121. The second piston 117 is coupled to the 116 and forward and backward, and the second piston 117 is connected to the first piston 108 to allow the same forward and backward of the second piston The second piston chamber 116 and the first piston chamber 10 in which the connecting means and the second piston 117 and the first piston 108 are coupled. 7) It is configured to have an air supply means for supplying air to the front and the back to the same as the second piston 117 and the first piston 108.

The connecting means of the second piston includes a connecting pipe 105 installed at the center of the cap 103 blocking both sides of the housing 102, and a first piston moving along an outer circumferential surface of the connecting pipe 105. The fixing piece 111 is fixed to the 108 with a bowl and is coupled to the outer circumferential surface of the moving tube 114 and the moving tube 114 which is moved along the outer circumferential surface of the connecting tube 105 together with the first piston 108. At the same time, the second piston 117 is fixed to the end with a nut and provided with a support tube 112 that moves with the moving tube 114.

In addition, the air supply means is a first air inlet 104 formed in one side cap 103 to supply external air to the connecting pipe 105 and the air supplied to the first air inlet 104 The first air supply hole 106 formed at the end of the connecting pipe 105 to supply to the first piston chamber 107, and the first piston chamber 107 supplied to the first air supply hole 106 The second air supply hole 109 formed in the first piston 108 and the second air supply hole 109 to supply air of the air to the second piston chamber 116 inside the ball screw tube 124. The third air supply hole 110 formed in the stationary piece 111 of the moving tube 114 and the moving tube 114 to guide the air supplied to the third air supply hole 110 to guide the air supplied to the air. ) And the fourth air supply hole 113 formed between the support pipe 112 and the air supplied to the fourth air supply hole 113 to supply to the second piston chamber 116. The second piston chamber 116 to reverse the fifth air supply hole 115 formed in the 112 and the second piston 117 advanced by the air supplied to the fifth air supply hole 115. In order to supply air back to the furnace was provided with a second air inlet 118 formed in the cap 103 on one side.

Referring to the operation of the present invention as described above is as follows.

First, the hoist 101 of the present invention is coupled to the rail installed on the ceiling of the workplace is installed to move along the rail.

And, the hook 127 is attached to the end of the wire 126 of the hoist 101 is hooked so as to hang things.

The case of lifting an object in the above state will be described with reference to FIG.

First, the wire 126 to which the ring 127 is attached is maintained in a state where the wire 126 is lowered to the position of the article in a state of being released from the winding groove 122 of the reel 121.

Accordingly, the first air entrance 104 formed at the center of the cap 103 on one side of the housing 102 by pressing the hook lifting button of the controller after hooking the hook 127 or the hook at the end of the wire 126 to the object to be lifted. The air with constant pressure is supplied.

The air supplied to the first air inlet 104 is transferred along the inside of the connecting pipe 105 to pass through the first air supply hole 106 formed at the end of the connecting pipe 105 to form the first piston chamber 107. Is supplied.

The air supplied to the first piston chamber 107 pushes the first piston 108 and simultaneously pushes the second piston 117 while being supplied to the second piston chamber 116 inside the ball screw tube 124. do.

That is, the air of the first piston chamber 107 is the second air supply hole 109 formed in the first piston 108 and the third air supply hole 110 formed in the fixing piece 111 of the moving tube 114. It is guided to the fourth air supply hole 113 formed between the support tube 112 and the moving tube 114 through.

And, the air guided to the fourth air supply hole 113 is supplied to the second piston chamber 116 through the fifth air supply hole 115 formed at the end of the support tube 112, the second piston 117 Pushed).

Therefore, the first piston 108 is moved straight in the first piston chamber 107 and the second piston 117 is the same as the first piston 108 in the second piston chamber 116. Go straight ahead.

That is, since the second piston 117 is integrally fixed by a nut to the support tube 112 on the outside of the moving tube 114 that fixes the fixing piece 111 to the first piston 108, the first piston 117 is the first piston. Having the same stroke as the piston 108 it is possible to go straight.

Then, the reel 121 connected to the first piston 108 and the fixed plate 119 by the straight movement of the first piston 108 as described above is in a state to move straight.

However, in the reel 121, the fixing plate 119 is connected to the first piston 108 and the bearing 120, and the ball nut 123 fixed inside the reel 121 is a ball screw tube ( When a straight force is applied to the reel 121 in combination with the 124, the ball nut 123 rotates along the outer circumferential surface of the ball screw tube 124 fixed to the cap 103, and the reel 121 It will go straight while rotating.

Accordingly, the winding groove 122 of the reel 121 can wind the wire 126 as shown in FIG. 3 and lift the object caught by the hook 127 at the end of the wire 126 to an arbitrary height. .

When the object is raised to the desired height as described above, if you remove the ring lifting button held by hand to stop the supply of air, the operation of the hoist 101 is also stopped, so assembling with other objects or changing the hoist (1) itself You can move it to a location.

After moving the object to another position using the hoist 101 of the present invention as described above should be lowered to the position of the object to be assembled or put the object hanging on the hook 127 or hook in the place to put the object down. .

At this time, press the ring down button of the controller.

The air having a predetermined pressure is supplied into the second piston chamber 116 by the pressing operation of the ring lowering button to the second air inlet 118 formed at one cap 103 of the housing 102.

The air introduced into the second piston chamber 116 pushes the second piston 117 to reverse.

In addition, the first piston 108, which is connected to the second piston chamber 116, the support tube 112, and the moving tube 114, also reverses.

At this time, the reverse motion of the second piston 116 and the first piston 108 is in a state of reversing while compressing the air in the second piston chamber 116 and the first piston chamber 107.

Therefore, the air in the second piston chamber 116 is supplied through the fifth air supply hole 115, the fourth air supply hole 113, and the third air supply hole 110 and the second air supply hole 109. After being introduced into the first piston chamber 107, it is discharged to the first air entrance 104 through the first air supply hole 106 and the connection pipe 105.

On the other hand, the reel 121 connected thereto by the backward action of the first piston 107 is returned to its original position by the reverse rotation due to the action of the ball nut 123 and the ball screw tube 124 and the winding groove of the outer peripheral surface At 122, the wire 126 is loosened as shown in FIG.

Therefore, the worker can easily put down the object hanging on the hook 127 in the desired position, such as assembly work and can be safely put down in the desired place.

In the present invention, the first piston 108 and the second piston 117 move simultaneously when the wire 126 is wound up (when rising) or when it is unwinding (down). Since the air filled in the 107 and the second piston chamber 116 is moved while compressing, the sudden rise and fall of the wire 126 is not performed, and thus the rising speed of the uniform speed can be obtained at all times.

Therefore, even if the object is not caught on the end of the wire 126, it is possible to lift and move the wire 126 and the ring at a uniform speed can be used very convenient during assembly work.

In addition, it is possible to reduce the shaking to the minimum by the wire 126 is elevated at a uniform speed, it is possible to improve the work efficiency and productivity.

In this way, the present invention obtains a smooth wire lifting operation and a uniform lifting speed by the operation of compressing air in the piston chamber during the forward and backward movements of the first and second pistons. This can be very useful for poetry.

In particular, it is possible to prevent the safety accident of the workplace by the stable lifting operation without shaking, has a useful effect that can be expected to improve the work efficiency and productivity.

Claims (3)

The first piston moves forward by the pressure of air flowing into the first piston chamber formed inside the housing of the hoist, and is connected to the first piston and the fixed plate. The wire is rotated by the operation of the ball nut and the ball screw tube. A reel that can be lifted up and rolled up without winding, A second piston coupled to the second piston chamber of the ball screw tube so that the reel may be moved while being rotated at an appropriate pressure even when the wire is unwound from the winding groove by the reverse rotation of the reel; Connecting means of a second piston for allowing the second piston to be connected with the first piston so as to perform the same forward and backward movements; And an air supply means capable of supplying air into the second piston chamber and the first piston chamber to which the second piston and the first piston are coupled to move the second piston and the first piston in the same way. Hoist using air balance. The method of claim 1, The connecting means of the second piston and the connecting pipe is installed to the central portion of the cap blocking both sides of the housing, A moving tube fixed to the first piston moving along the outer circumferential surface of the connecting pipe with a bowl and moving along the outer circumferential surface of the connecting pipe together with the first piston; Hoist using an air balance coupled to the outer circumferential surface of the moving tube and at the end of the second piston is fixed with a nut and provided as a support tube that moves with the moving tube. The method of claim 1, The air supply means and the first air inlet formed in one side cap for supplying external air to the connecting pipe; A first air supply hole formed at an end of the connecting pipe to supply air supplied to the first air inlet to the first piston chamber; A second air supply hole formed in the first piston to supply air from the first piston chamber supplied to the first air supply hole to the second piston chamber inside the ball screw tube; A third air supply hole formed in the fixed piece of the moving tube to guide the air supplied to the second air supply hole, A fourth air supply hole formed between the moving tube and the support tube to guide the air supplied to the third air supply hole; A fifth air supply hole formed in the support pipe to supply air supplied to the fourth air supply hole to the second piston chamber, Air balance provided with a second air inlet formed in one side cap to supply air back to the second piston chamber to reverse the second piston advanced by the air supplied to the fifth air supply hole Hoist using.

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