JPH048153Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an operating tool for an electric chain block, and more particularly, to an operating tool for an electric chain block that controls the operation of a drive motor of a load sheave.

(Prior art) Generally, for this type of electric chain block,
A lower hook is suspended from a chain block body including a load sheave and a motor for driving the load sheave through the load chain, while an operating tool for an operation switch for controlling the operation of the drive motor is connected from the chain block body. The lower hook is suspended via a cord, and the motor is driven in forward and reverse directions by operating an operating switch of the operating tool, and the lower hook is hoisted up and lowered in response to this forward and reverse drive.

(Problems to be Solved by the Invention) By the way, in the operating tool of such an electric chain block, since the lower hook block and the operating tool are separately suspended from the chain block body, the operation thereof is difficult. Sometimes it is necessary to hold the operating tool with one or both hands and operate the operating switch, so for example, when assembling the upper mold into the lower mold using the chain block, it is necessary to work alone. However, there is a problem in that it is not possible to hold the upper mold and the lower hook using both hands and guide the upper mold to fit the lower mold well while preventing the upper mold from moving laterally or shaking. A person who operates the operation switch and a person who guides the upper mold to the lower mold are required, which requires a plurality of hands.

The present invention forms an operating tool that can be attached to a road chain in an existing electric chain block in a non-rotatable and height-adjustable manner, and that has the operating switch and an operating handle that controls the lateral movement of the lower hook. The operation switch can be operated while holding the lower hook, thereby solving the above-mentioned problem that occurs when one person carries out loading and unloading operations.

(Means for Solving the Problems) The present invention has a through hole through which a load chain, which is hung on a load sheave and has a lower hook attached to its lower end, can be inserted, and is movable with respect to the load chain. A tool main body is provided, and the operating tool main body is provided with:
A fixing means is provided that engages with the load chain inserted through the through hole and fixes the operating tool main body so that it cannot rotate relative to the chain and is adjustable in height with respect to the load chain. An operating switch for controlling the operation of the drive motor is disposed on one side wall of the main body, and extends downwardly at a lower position of the operating tool main body, and the lower position of the operating switch controls the lateral movement of the lower hook. The feature is that an operating handle is attached.

(Function) When hoisting and lowering the lower hook, the operation switch is operated while the lateral movement of the lower hook is controlled by the handle of the operating tool body fixed at an arbitrary height position of the load chain. This made it possible to do so.

Further, since the operating switch 3 is located above the downward operating handle 4, when the operating handle 4 is grasped and the lower hook 18 is moved laterally, it is possible to prevent the operating switch 3 from being touched and erroneously operated. The operating switch 3 can be operated by gripping the operating handle 4 with either the right or left hand.

(Example) Hereinafter, an example of the operating tool for the electric chain block according to the present invention will be described based on the drawings.

First, FIG. 4 shows an example of an electric chain block equipped with the operating tool of the present invention. In the figure, 1 is a chain block main body, and the main body 1 has a pair of base plates 11 and 12 facing each other at a predetermined interval. The load sheave 13 is rotatably supported between the base plates 11 and 12, and a motor 14 for driving the load sheave 13 is provided on the outside of the base plate 11 on one side of the base plates 11 and 12, and Base plate 1
A gearbox 15 is installed outside the motor 2 and includes a reduction gear mechanism (not shown) for transmitting the driving force from the motor 14 to the load sheave 13.
Outside the gear box 15 in the main body 1, there is an electrical box 16 that houses electrical components (not shown).
are placed.

A load chain 17 is hung from the load sheave 13, and a lower hook block 19 with a lower hook 18 is attached to the load-side free end of the chain 17 hanging from the main body 1. In addition, the motor 14 includes a
An operating tool for controlling the reverse rotation of the lower hook 18 is connected via a cord 5, and the operation of the operating tool drives the motor 14 in the forward and reverse directions, thereby raising and lowering the lower hook 18.

10 is a base plate 11, 1 above the load sheave 13 of the chain block main body 1.
This is a hanging tool attached between the two.

Therefore, the present invention uses the load sheave 1 as an operating tool for the electric chain block constructed as described above.
3 and has a through hole 21 through which a load chain 17 with a lower hook 18 attached to the lower end can be inserted, and is movable with respect to the load chain 17. 2 is mainly a pin that is inserted through the through hole 21 and engages with the load chain 17 and fixes the operation tool main body 2 so that it cannot rotate relative to the chain 17 and can adjust its height with respect to the load chain 17. 23
While providing a fixing means such as
An operating switch 3 for controlling the driving motor 14 is disposed on one side wall, and extends downwardly at a lower position of the operating tool main body 2, and the lower hook 18 is placed horizontally at the lower position of the operating switch. The operating handle 4 that controls movement is mounted downward.

Specifically, as shown in FIGS. 1 to 3, a load chain 17 is installed on one side of the box-shaped operating tool main body 2.
The operating switch 3 is formed with a vertical through-hole 21 through which it can be inserted, and is opened to one side on the other side.
A mounting recess 24 is formed, and a push-button operating switch 3 is provided in the mounting recess 24, and an operating handle extending downward from the lower surface on the side where the operating switch 3 is disposed is provided at a lower position of the operating tool main body 2. 4 is integrally attached so that the operation switch 3 can be operated with the thumb while gripping the handle 4.

A pin hole 22 is formed in the through hole 21 and extends perpendicularly to the through hole 21, and a pin 23 is inserted into the pin hole 22 to prevent the operating tool main body 2 from rotating and coming out. At the same time, a lower hook block 19 for rotatably supporting the lower hook 18 is attached to the free end of the load chain 17, and the upper surface of the lower hook block 19 supports the operating tool main body 2. .

Further, the operation switch 3 is connected to the motor 14 via a cord 5, and the cord 5 is connected to
The coil is spirally wound with a coil inner diameter larger than the outer diameter of the chain 17, and this winding portion 51 is loosely fitted around the outer circumference of the chain 17. Further, 25 is a cord extraction hole provided on the side of the operating tool main body 2;
Reference numeral 26 denotes a lid of the mounting recess 24.

Reference numeral 6 denotes a receiving plate for receiving the lower part of the cord 5 provided on the upper surface of the operating tool main body 2, and the receiving plate 6 is provided with an insertion hole 61 for the chain 17.

The operating tool for the electric chain block according to the present invention has the above-mentioned configuration, and when one person uses the operating tool to assemble the upper mold into the lower mold, for example, the operator uses one hand to assemble the upper mold into the lower mold. The user can operate the operating switch 3 with the hand holding the handle 4 while holding the operating handle 4 of the operating tool main body 2 and holding the upper part of the lower hook 18 or the upper die with the other hand. This allows one person to operate the switch for winding up and lowering the lower hook 18 while using both hands to prevent the lower hook 18, that is, the upper die, from moving laterally or swinging, and to guide the upper die to fit well with the lower die. This allows it to be lowered accurately.

Further, since the operating switch 3 is located above the downward operating handle 4, when the operating handle 4 is grasped and the lower hook 18 is moved laterally, it is possible to prevent the operating switch 3 from being touched and erroneously operated. The operating switch 3 can be operated by gripping the operating handle 4 with either the right or left hand.

In addition, in the embodiment described above, the engaging portion 21 includes:
Although a through hole with a circular cross section is formed, it may be formed with a through hole with a cross cross section, or the engaging portion 21 may be divided into two parts and fixed to the chain by tightening bolts or the like. This configuration is preferable because the lower hook block 19 can be attached to the load chain 17 with the lower hook block 19 still attached.

Further, in the embodiment described above, a connecting tool may be provided at the lower end of the cord 5 and the operating tool main body 2 so that the cord 5 can be removed from the operating tool main body 2. Furthermore, as shown in FIG. As shown, if a pipe-shaped overwinding prevention member 7 through which the load chain 17 can be inserted is provided on the upper part of the operating tool main body 2, contact between the insertion tool main body 2 and the chain block main body 1 can be prevented. preferable. 71 is the overwinding prevention member 7
This is an elastic member provided at the upper end of the .

(Effects of the invention) As described above, the present invention has a through hole through which a load chain, which is hung on a load sheave and has a lower hook attached to its lower end, can be inserted, and the main body of the operating tool is movable with respect to the load chain. is provided in the operating tool main body to engage with the load chain inserted through the through hole, and fix the operating tool main body so as to be immovable relative to the chain and to be adjustable in height with respect to the load chain. An operating switch for controlling the drive motor is provided on one side wall of the operating tool main body, and an operating switch is provided at a lower position of the operating tool main body, extending downwardly below the operating switch. Since the operating handle is attached to control the lateral movement of the lower hook at the same position, the operating tool body can be attached to the road chain of an existing electric chain block using the through hole in the operating tool main body. can be used, and furthermore, when the operating tool main body is attached to the road chain, it engages with the road chain passing through the through hole, and the operating tool main body cannot rotate relative to the chain, and By providing a fixing means to adjust the height of the operating tool to the load chain, it is possible to optimally adjust the operating tool body to the load chain depending on the shape and usage conditions of the load to be lifted from the lower hook of the load chain. In other words, the operating tool main body can be fixed at a predetermined height position relative to the load chain, so the operating tool main body can be prevented from interfering with a part of the load and pulling the load toward the lower hook. It is possible to prevent the operation from becoming difficult due to the difficulty of hooking or the operation position becoming extremely low, and the operation tool main body can rotate relative to the load chain or move up and down at the appropriate height position. Therefore, when loading and unloading cargo, it is possible to operate the operation switch while grasping the operation handle attached to the main body of the operating tool and reliably controlling the lateral movement and swinging of the lower hook. Moreover, since an operating handle that extends downward and controls the lateral movement of the lower hook at the lower position of the operating switch is attached to the lower part of the operating switch operating tool body, the operating handle can be grasped. When the lower hook is laterally moved, it is possible to prevent the operation switch from being touched and erroneously operated, and the operation switch can be operated even when the operation handle is grasped with either the left or right hand.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway sectional view of the main part showing an embodiment of the operating tool of the present invention, Figure 2 is a side view of the operating tool, Figure 3 is a plan view of the same, and Figure 4 is the operating tool of the present invention being installed. A front view of the electric chain block shown in FIG. 5 is an explanatory view showing another embodiment. 13...Load sheave, 14...Drive motor, 17...Load chain, 18...Lower hook,
2... Operating tool main body, 21... Engaging portion (through hole),
3... Operating tool body, 4... Operating handle.

Claims (1)

[Scope of utility model registration request] An operating tool for an electric chain block that controls the operation of a drive motor for a load sheave, which is hung on the load sheave and has a through hole through which a load chain with a lower hook attached to its lower end can be inserted. An operating tool main body is provided that is movable relative to the chain, and the operating tool main body is engaged with the load chain inserted through the through hole so that the operating tool main body cannot rotate relative to the chain, and the operating tool main body is movable relative to the chain. A fixing means is provided for fixing the chain so that its height can be adjusted, and a fixing means is provided on one side wall of the operating tool body,
An operation switch for controlling the operation of the drive motor is disposed, and at a lower position of the operation tool main body,
An operating tool for an electric chain block, characterized in that an operating handle is attached that extends downward and controls lateral movement of the lower hook at a position below the operating switch.