JP6431797B2 - Electric chain block - Google Patents

Description

  The present invention relates to an electric chain block.

As background art of this technical field, there are an upper hook and a lower hook as hooks of an electric chain block, and the types of hooks are as described in Patent Document 1 (Japanese Patent Laid-Open No. 2007-261800). A hook having a hook shape with a stopper (hereinafter referred to as a hanging hook) and a hook having an annular shape without a stopper as described in Patent Document 2 (Japanese Patent Laid-Open No. 11-106189) , Direct-coupled hook).

JP 2007-261800 A JP-A-11-106189

  There are two types of upper hooks for suspending and installing an electric chain block: a suspended hook and a direct hook. Further, a load block for winding and unloading a suspended load is composed of a hanger and a lower hook, and the lower hook has two types of shapes like the upper hook.

  The suspension type hook has a hook shape with a stopper, and by opening and closing the stopper, the upper hook can be easily attached to and removed from the trolley or equipment. In the case of the lower hook, it is possible to easily attach and remove a hanging tool for hanging a load, that is, a wire rope.

  The direct hook has no ring stopper and has an annular shape, and the upper hook can be directly assembled into a trolley or equipment so that it will never come off during use. In the case of the lower hook, the hanging tool for hanging the load is dedicated for direct connection, and is always used in the same form, so that the danger that the hanging load falls and the suspended load falls can be eliminated.

  Conventionally, these two types of hooks have been used individually according to the above situation. However, when changing the usage environment or installation environment of the electric chain block, it is necessary to change the type of the hook. Had to spend time and money.

  Accordingly, an object of the present invention is to provide an electric chain block that can be attached to equipment and attached to a load regardless of the use environment.

  The present application includes a plurality of means for solving the above-mentioned problems. To give an example, an electric chain block for raising and lowering a suspended load, an upper hook for attaching a trolley or equipment to the electric chain block body, and a load It has a load block having a lower hook to be hooked, and at least one of the upper hook and the lower hook is a suspension vertical connection type hook having a structure that can be used for both suspension type and direct connection type And

  ADVANTAGE OF THE INVENTION According to this invention, the electric chain block which can be attached to an installation and load attachment irrespective of use environment can be provided.

It is the front view which illustrated the composition of the conventional electric chain block main part. It is the side view which illustrated the composition of the conventional electric chain block main part. FIG. 6 is a front view illustrating a hanging vertical connection type hook according to an embodiment of the present invention. It is a front view at the time of an assembly drawing concerning the embodiment of the present invention, and when using a hanging vertical connection shared type hook as an upper hook, and an assembly drawing. FIG. 10 is a front view illustrating the operation of the hanging / vertical connection shared hook when the hanging / vertically connecting shared hook is used as an upper hanging tool according to the embodiment of the present invention. It is a front view at the time of the assembly | attachment which concerns on embodiment of this invention, and uses it when using a hanging vertical connection shared type hook as a lower hook, and an assembly. It is a front view showing operation | movement of the hanging vertical connection type | formula hook in the case of using a vertical connection type | formula hook with an upper suspending tool concerning embodiment of this invention.

  Hereinafter, examples will be described with reference to the drawings. In addition, this invention is not limited to a following example.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 is a front view illustrating the configuration of a conventional electric chain block main body, FIG. 2 is a side view illustrating the configuration of a conventional electric chain block main body, and FIG. 3 is a front view illustrating a hook and vertical connection type hook. Fig. 5 is a front view of the upper hanging tool connecting bracket used when the hanging vertical connection type hook is used as an upper hook and a front view when assembling. Fig. 6 is a front view of the lower hanging joint connecting bracket used when the hanging vertical connection type hook is used as the lower hook and a front view when assembling. Fig. 7 is a case where the hanging vertical connection type hook is used as the upper hanging tool. The front view showing operation | movement of the hanging vertical connection shared type hook is shown.

The overall configuration and operating principle of the electric chain block will be described with reference to FIGS. First, the overall configuration will be described. The electric chain block 100 includes an electric motor 1, a speed reducer 2, an electromagnetic brake 3, an upper lifting tool 4, a push button switch 5, a chain bucket 6, a sprocket 7, a load block 10, and a load chain 11. The electric chain block 100 is attached with an upper hook 4 for suspending and installing the electric chain block 100. An electric motor 1 is attached to the electric chain block 100, and a speed reduction unit 2 for reducing the rotation generated in the electric motor 1 is connected to the electric motor 1, and the number of rotations reduced by the speed reduction unit 2 is determined by the sprocket. 7 is transmitted. An electromagnetic brake 3 for stopping the rotation generated in the electric motor 1 is attached to the side opposite to the electric motor 1 of the speed reduction unit 2.
A load chain 11 is stretched over the sprocket 7, and a load block 10 is attached to one end of the load chain 11. A chain bucket 6 is suspended from the electric chain block body 100, and the opposite side of the load chain 11 from the load block 10 is accommodated in the chain bucket 6.

  Next, the operation principle will be described. When the operation button of the push button 5 is pressed, the electric motor 1 is energized. At the same time, the electromagnetic brake 3 is also energized, the electromagnetic brake 3 is released, and the electric motor 1 starts rotating. The rotational power of the electric motor 1 is decelerated to a predetermined rotational speed by the speed reducer 2, and the rotation is transmitted to the load chain 9 by the sprocket 7 connected to the final speed reduction stage, and the load block 10 is wound and wound via the load chain 11. Lowers, lifts and lowers the suspended load.

  Based on FIGS. 3 to 7, the structure of the suspended vertical connection type hook 21 in the present embodiment, the structure and the use operation when the suspended vertical connection type hook 21 is used as the upper hook and the lower hook will be described.

  With reference to FIG. 3, the structure of the suspension / vertical connection type hook 21 in this embodiment will be described. The hanging vertical coupling type hook 21 is a single hook and has both a hanging part 21a and a direct coupling part 21b. Further, the hanging vertical connection type hook 21 has a metal fitting mounting hole 21c.

  The suspension portion 21a has a hook-shaped engagement portion that engages with a facility for attaching the electric chain block and a locking member 12, and the direct connection portion 21b is an annular engagement portion that engages with the facility for attaching the electric chain block. have.

  The bracket mounting hole 21c is provided between the hook-shaped engagement portion with the detachment stop bracket 12 of the suspension portion 21a and the ring-shaped engagement portion of the direct connection portion 21b. The directly connected shared hook 21 and the main body of the electric chain block are connected.

  The structure in the case of using the suspension vertical connection type hook 21 as an upper hook will be described with reference to FIG. When used as an upper hook, as shown in FIG. 5, the suspension / vertical connection type hook 21 is rotatably mounted by a pin 24 in a bracket mounting hole 21 c and a hook mounting hole 22 a of the upper suspension coupling bracket 22.

  Further, the upper hanging tool connecting bracket 22 has a main body attaching portion 22b. In other words, the hanging vertical connection type hook 21 can be attached to the electric chain block 100 via the upper hanger connecting bracket 22.

  The operation of the hanging vertical connection type hook 21 when used with the upper hook will be described with reference to FIG. As described above, the suspension / vertical connection type hook has a structure of both the hanging portion 21a and the direct connection portion 21b as a single hook, and can be used in accordance with the application.

  Since the hanging vertical connection type hook 21 is rotatably attached to the upper hanger connecting bracket 22 by the pin 24, when it is installed in the trolley or equipment, any state within the movable range of the hanging vertical connection type hook 21 can be used. Even if attached, the vertically-coupled hook 21 rotates with the pin 24 as a fulcrum due to the weight of the electric chain block 100, and when the suspended portion 21a is used, the suspended portion 21a protrudes upward with respect to the main body. It rotates to 26a and is held at a predetermined position 31a. On the other hand, when using the direct connection portion 21b, the direct connection portion 21b rotates in the direction 26b so as to protrude upward with respect to the main body and is held at a predetermined position 31b.

  For this reason, it is possible to attach to the equipment regardless of the installation environment of the electric chain block.

  The structure in the case of using the suspension vertical connection type hook 21 as a lower hook will be described with reference to FIG. When used as a lower hook, the suspension / vertical joint type hook 21 is attached to the bracket attachment hole 21c and the hook attachment hole 23a of the lower suspender connection fitting 23 so as to be rotatable by a pin 24.

  Further, the lower hanger connecting bracket 23 is connected to the hanger 24 by a hanger mounting hole 23b so as to be rotatable in the horizontal direction, and the load chain 11 is attached to the hanger 8. The hanging vertical connection type hook 21 can be attached to the load chain 11 via the lower hanger connecting bracket 23 and the hanger 24.

  That is, in the present embodiment, the hanger 24, the lower suspender coupling fitting 23, and the suspended shared hook 21 are integrated to form a shared load block 26.

  With reference to FIG. 7, the operation of the hanging vertical connection type hook 21 when used with the lower hook will be described. Since the suspension type direct connection type common hook 21 is attached to the lower hanger connecting bracket 23 so as to be rotatable by the pin 24, the suspension vertical connection type common hook 21 rotates around the pin 24 by suspending the suspended load. Thus, when the suspension part 21a is used in the suspension part 21a, the suspension part 21a rotates in the direction 27a so as to protrude downward with respect to the main body and is held at a predetermined position 32a.

  When used in the direct connection portion 21b, the direct connection portion 21b rotates in a direction 27b so as to protrude downward with respect to the main body and is held at a predetermined position 32b.

  Therefore, it is possible to provide an electric chain block that can be loaded regardless of the usage environment.

  The change in use from the suspension part 21a to the direct connection part 21b, or the change in use from the direct connection part 21a to the use of the suspension part 21b can be made by rotating the hook.

  From the above, according to the present embodiment, when the hanging vertical connection type hook 21 is used as the upper hook of the upper suspension tool, it is never detached during use by being directly incorporated into the trolley or equipment when installing the electric chain block. A direct connection type or a suspension type that can be easily attached and detached can be selected.

  In addition, when used as a lower hook for a load block, use a hook with a locking stopper for a commonly used hanging tool such as a wire rope, and use a direct-coupled hook for a dedicated hanging tool. An electric chain block that can be used properly can be provided.

100 ... Electric chain block 1 ... Electric motor 2 ... Decelerator
3 ... Electromagnetic brake
4 ... Upper hanging tool 5 ... Push button switch 6 ... Chain bucket 7 ... Sprocket 8 ... Hanger 9 ... Lower hook 10 ... Load block 11 ... Load chain 12 ... Removal stopper 21 ... Suspension / vertical connection type hook 21a ... Suspension / vertical connection type common use Hook suspension part 21b ... Suspension vertical connection type common hook direct connection part 21c ... Suspension vertical connection type common hook metal fitting mounting hole 22 ... Upper hanger coupling metal fitting 22a ... Upper hanger coupling metal fitting hook attachment hole 22b ... ... Lower hanger coupling bracket 23a ... Lower hanger coupling bracket lower hook mounting hole 23b ... Lower hanger coupling bracket hanger mounting hole 24 ... Pin 25 ... Shared load block 26a ... Direction in which suspension 21a is perpendicular to the main body (Up hook)
26b: direction in which the direct connection portion 21b is perpendicular to the main body (when the upper hook is used)
27a: Direction in which the suspended portion 21a is perpendicular to the main body (at the time of the lower hook)
27b: Direction in which the direct connection portion 21b is perpendicular to the main body (when the lower hook is used)
31a: When using a suspended upper hook 31b: When using a directly connected upper hook 32a: When using a suspended lower hook 32b: When using a directly connected lower hook

Claims (6)

An electric chain block for raising and lowering a suspended load, an upper hook for attaching the electric chain block body to a trolley or equipment,
It has a load block with a lower hook that hooks luggage,
At least one of the upper hook and the lower hook is a hanging portion that is a hook having a hook shape with a locking member, a direct connection portion that is a hook having an annular shape without a locking member , and for mounting An electric chain block characterized in that it is a hanging vertical connection type hook having a structure with a mounting hole . The electrical chain block according to claim 1,
The hanging vertical connection type hook includes a hook-shaped engagement portion and an annular engagement portion. The electrical chain block according to claim 1,
The electric chain block is characterized in that the hanging vertical connection type hook is attached to an electric chain block main body by being attached to an upper suspension fitting. The electric chain block according to claim 3,
The electric chain block according to claim 1, wherein the hanging vertical connection type hook and the upper hanging tool connecting bracket are attached by pins, and the hanging vertical connection type hook is rotatable. The electrical chain block according to claim 1,
The electric chain block according to claim 1, wherein the load block is composed of a hanging vertical connection type hook, a lower hanger connecting bracket and a hanger. The electric chain block according to claim 5,
The electric chain block according to claim 1, wherein the hanging vertical connection type hook and the lower suspender coupling metal fitting are attached by pins, and the hanging vertical connection type hook is rotatable.

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