JP2010149942A - Electric chain block - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric chain block having a lubricating oil feeding mechanism capable of applying lubricating oil to a load chain, without relying on manual work of a worker. <P>SOLUTION: This electric chain block includes a motor, a load sheave driven by the motor, a body part having the motor and the load sheave, a load block connected to the load chain engaged with the load sheave, and a chain bucket for storing the load chain. The body part has a chain guide for guiding and storing the load chain to and in the load sheave, and the chain guide is provided with the lubricating oil feeding mechanism for applying the lubricating oil to the load chain. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an electric chain block, and more particularly to an electric chain block having a load chain wear suppression function by lubricating oil supply.

  Lubricating oil is applied to the load chain by an operator manually applying it. Specifically, with the load chain slackened, apply enough to the contact points between the load chains, and after application, roll up and down the entire lift 2-3 times to fully lubricate the contact points between the load chains. A technique for spreading oil is disclosed (for example, see Patent Document 1).

JP2003-171089

  Since the electric chain block raises a heavy load, the load chain is worn by contact between the load chains, and when the predetermined amount of wear proceeds, the load chain is broken. Therefore, in order to suppress this wear, it is necessary to apply a lubricant such as grease or lubricating oil for lubrication to the load chain. However, the electric chain block is often installed at a high place and used in a harsh environment, and it is often dangerous and troublesome for the operator to perform the operation of applying the lubricant. In addition, in the case of hand coating, not only the workability of applying the lubricant to the load chain is bad, but also uneven coating tends to occur. Further, the lubricant is dried and exfoliated over time after application.

  An object of the present invention is to provide an electric chain block including a lubricating oil supply mechanism that can apply lubricating oil to a load chain without manual operation by an operator.

  To achieve the above object, a motor, a load sheave driven by the motor, a motor, a main body including the load sheave, and a load connected to a load chain engaged with the load sheave. An electric chain block comprising a block and a chain bucket for storing the load chain, wherein the main body portion includes a chain guide for guiding the load chain to the load sheave, and the chain guide includes the load chain. A configuration is adopted in which a lubricating oil supply mechanism for applying lubricating oil is provided.

  According to the present invention, for example, lubricating oil can be applied to the load chain without being manually performed by an operator, and the lubricating oil is applied to the entire load chain only when the load chain is wound and lowered. Can do.

  In addition, according to the present invention, for example, the lubricating oil application work state is brought on at any time, and there is no possibility of drying and exfoliation of the lubricating oil, and the load chain wear suppression can be improved.

  Further, according to the present invention, for example, since the application work is performed on the chain bucket side, the lubricating oil can enter the chain bucket and be applied to the load chain in the chain bucket without dripping onto the ground. .

  The best mode for carrying out the present invention will be described below.

  Embodiments of the present invention will be described below with reference to the drawings. Note that the present invention is not limited to illustrated instructions.

  First, a general electric chain block will be described with reference to FIGS. The electric chain block 100 includes a main body 101 including an upper suspension 4 for attaching the motor 1, the brake 2, the speed reduction unit 5, and the electric chain block 100. The electric chain block 100 is energized to the motor 1 when the operation button of the push button 3 is pushed, and at the same time, the brake 2 is energized to release the brake 2 and the motor 1 starts rotating. The rotation of the motor 1 is decelerated to a predetermined rotational speed by the speed reduction unit 5, and the rotation is transmitted to the load chain 7 by the load sheave 6 connected to the final deceleration stage, and the load block 8 passes through the load chain 7. Winding or lowering is performed, and the suspended load is wound or lowered. FIG. 3 is a cross-sectional view showing a state in which the lubricating oil supply mechanism 110 that is the subject of the present invention is attached to the chain guide 10, and FIG. 4 is a top view of the lubricating oil supply mechanism 110.

  In the electric chain block 100, the lubricating oil supply mechanism 110 includes a lubricating oil tank 14, an oil tank 12, an oil tank lid 13, and a brush 11. An oil tank 12 in which lubricating oil is stored is installed at the lower part of the chain guide 10, and the brush 11 in contact with the stored lubricating oil contacts the load chain 7 and is applied by capillary action.

The lubricating oil tank 14 in which the lubricating oil 30 is stored is attached to the oil tank 12 with the opening 31 directed toward the bottom surface of the oil tank 12, and is fixed by screwing the oil tank lid 13. An oil level L is formed at the same height as the opening 31 of the lubricating oil tank 14.
The brush 11 is made of a deformable material, and for example, nylon fiber is used. The oil tank protrusions 15, 16, 17, and 18 and the oil tank cover protrusions 19, 20, 21, and 22 are not in contact with each other, and a gap is opened. Therefore, the brush 11 is guided into this gap. The brush 11 is directed upward by the protrusions 15 and 16.

  The length of the brush 11 may be as long as it contacts the load chain 7. The brushes 11 are arranged in parallel, and only the end portion is fixed with resin or the like and then put into the oil tank. The brush 11 is sandwiched between the oil tank body projecting parts 17 and 18 and the oil tank cover projecting parts 19 and 20 so as not to come off. Thereby, only the brush can be replaced.

  Even if the kinematic viscosity index of the lubricating oil 30 changes due to a temperature change, the capillary phenomenon is not so much affected, and the wet state of the lubricating oil 30 can be kept constant with respect to the brush 11. Insufficient supply does not occur, and the supply amount can be kept small. Moreover, excessive lubrication of lubricating oil is suppressed by installing the brush 11 upward. Further, the application amount can be changed by changing the amount and thickness of the hair of the brush 11.

  Thus, according to the invention according to the present embodiment, the lubricating oil is applied as needed, and there is no possibility of drying / exfoliation of the lubricating oil, so that wear suppression of the load chain 7 can be improved. Furthermore, when the lubricating oil 30 is used up, only the lubricating oil tank 11 needs to be easily replaced, and the lubricating oil 30 can be easily replenished. Further, since the lubricating oil supply mechanism 110 performs the application operation on the chain bucket 9 side, the lubricating oil enters the chain bucket 9 without being dripped onto the ground, and is applied to the load chain 7 in the chain bucket 9. It is possible to prevent the lubricating oil from being scattered in the work area around the chain block 100.

  Next, Example 2 will be described with reference to the drawings. In addition, description about the part which is common in Example 1 is abbreviate | omitted, and it demonstrates centering around the characteristic part of Example 2. FIG.

  As shown in FIG. 5, an oil-impregnated body 23 made of felt or the like that can maintain a state containing a certain amount of lubricating oil may be installed in the oil tank 12 without using the lubricating oil tank 14. FIG. 6 shows a top view of the oil-impregnated body 23. The oil-impregnated body 23 directly becomes an oil-coated body and comes into contact with the load chain 7 to supply lubricating oil. The application amount of the lubricating oil can be changed by changing the density of the oil-containing body 23. The oil-impregnated body 23 is provided with a notch 24, and is fixed to the oil-impregnated body 23 by a screw 32 from the notch 24. Therefore, even if the oil-impregnated body 23 deteriorates, it can be easily replaced with a new oil-impregnated body by removing the screw 23.

  In this embodiment, the lubricating oil supply mechanism 120 includes a lubricating oil tank 14, an oil tank 12, and an oil-containing body 23. An oil tank 12 in which lubricating oil is stored is installed at the lower part of the chain guide 10, and the oil-impregnated body 23 that contacts the stored lubricating oil contacts the load chain 7 and is applied by capillary action. The lubricating oil tank 14 is fixed by screwing the oil tank 12. Lubricating oil can be sent from the bottom to the top by attaching an oil-impregnated body to the inner wall of the lubricating oil tank and using capillary action. The oil-impregnated body 23 is open in the shape of the load chain 7, and is applied to the entire load chain 7 by vibration during winding and lowering.

  Further, as described above, when the oil-impregnated body 23 is deteriorated, the oil-impregnated body 23 is only fixed to the oil tank 12 with the screws 32. Therefore, the screws 32 can be easily replaced with new oil-impregnated bodies. be able to.

  In the invention according to the present embodiment, even if the kinematic viscosity index of the lubricating oil changes due to the temperature change, the capillary phenomenon is not so much affected, and the wet state of the lubricating oil can be kept constant for the oil-containing body 23. Therefore, there is no excessive supply or insufficient supply of the lubricating oil, and the supply amount can be kept small.

  Further, according to the present embodiment, the lubricating oil is applied as needed, and there is no possibility of drying / peeling of the lubricating oil, so that it is possible to improve wear suppression of the load chain 7. Furthermore, if the lubricating oil runs out, only the lubricating oil tank 14 can be easily replaced. Since this lubricating oil supply mechanism performs application work on the chain bucket 9 side, the lubricating oil enters the chain bucket 9 and is applied to the load chain 7 in the chain bucket 9 without dripping onto the ground.

It is a side view of an electric chain block. It is a front view of an electric chain block. It is sectional drawing of the lubricating oil supply mechanism used as the object of this invention. It is a top view of the lubricating oil supply mechanism used as the object of the present invention. It is sectional drawing of the lubricating oil supply mechanism used as the object of this invention. It is a top view of the lubricating oil supply mechanism used as the object of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Motor, 2 ... Brake, 3 ... Push button switch, 4 ... Upper hanging tool, 5 ... Deceleration part, 6 ... Load sheave, 7 ... Road chain, 8 ..Load block, 9 ... chain bucket, 10 ... chain guide, 11 ... brush, 12 ... oil tank, 13 ... oil tank lid, 14 ... lubricating oil tank, 15, 16 17.18 ... Oil tank protrusion, 19, 20, 21, 22 ... Oil tank lid protrusion, 23 ... Oil-impregnated body, 24 ... Oil-impregnated body cut portion, 25.26 ... Brush fixing part, 30 ... lubricating oil, 31 ... opening, 32 ... screw, 34 ... limit spring, 35 ... limit spring, 36 ... hanger, 100 ... electric chain block, DESCRIPTION OF SYMBOLS 101 ... Main-body part, 110 ... Lubricant oil supply mechanism, Lubricant oil supply mechanism 1 0

Claims (5)

A motor,
A load sheave driven by the motor;
A main body provided with the motor and the load sheave;
A load block coupled to a load chain engaged with the load sheave;
In an electric chain block comprising:
The main body includes a chain guide that guides the load chain to the load sheave, and the chain guide includes a lubricating oil supply mechanism that applies lubricating oil to the load chain. Chain block.   The lubricating oil supply mechanism includes an oil tank, a lubricating oil tank that supplies lubricating oil to the oil tank, the oil tank, and a brush that is attached to the oil tank so as to contact the load chain block. The electric chain block according to claim 1.   The electric chain block according to claim 2, wherein the lubricating oil tank is detachably attached to an oil tank lid provided in the oil tank.   The lubricating oil supply mechanism includes an oil tank and an oil-impregnated body impregnated with the lubricating oil provided in the oil tank so as to contact the load chain block. The electric chain block according to 1.   The electric chain block according to claim 1, wherein the oil-containing body is detachably attached to the oil tank.

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