JP3015809U - Hand chain guide device for chain block - Google Patents

Abstract

(57) [Summary] [Object] To provide a hand chain guide device for a chain block, which can suitably guide the hand chain at an extremely low cost, and which also functions as a reinforcing member for a hand wheel cart cover. [Structure] A guide member welded and fixed to an edge portion of a handrail guide window in a handrail cover is provided with a reinforcing rib / guide portion extending in a width direction of a handrail fitting groove of the handwheel, and the handrail fitting from the reinforcing rib / guide portion And a projecting guide portion facing the groove wall located on the brake portion side of the groove.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a hand chain guide device provided on a hand chain cover in a manual chain block.

[0002]

[Prior art]

 Conventionally, a handwheel cover is provided on a chain block, and the handwheel cover is formed in a substantially bowl shape, and covers the brake part near the opening edge and the handwheel near the bottom part. It is well known that a handrail guide window is provided on the peripheral wall near the bottom of the handrail cart cover.

On the other hand, it is known that a guide metal fitting is directly fixed to a side plate of a chain block or fixed to a bolt fixed to the side plate.

[0004]

[Problems to be solved by the device]

 The above-mentioned hand-barrow cover has a problem that the bottom part can guide the hand chain from one side (the side opposite to the brake part), but cannot guide the hand chain from the other side (the brake part side).

Further, the above-mentioned structure for fixing the guide metal fitting has a problem that the shape is large and the weight is increased, which leads to a cost increase.

[0006]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a device capable of suitably guiding a hand chain at extremely low cost by welding and fixing a guide member to the edge of the hand chain guide window of the hand wheel cart cover. However, the present invention provides a multifunctional device that is particularly excellent in its guide function and effect and that also functions as a reinforcing member for a handbarrow cover.

In view of the above, the present invention is configured as the first means, in which the brake portion is covered by the vicinity of the opening edge of the bowl-shaped hand wheel cart cover and the hand wheel cart is covered by the vicinity of the bottom portion. In a chain block in which a hand chain guide window is provided on the peripheral wall near the bottom of the hand wheel guide, a guide member welded and fixed to the edge of the hand chain guide window extends in the width direction of the hand chain fitting groove of the hand car. It is provided with a dual-purpose guide portion and a projecting guide portion facing the reinforcing rib dual-purpose guide portion toward the groove wall located on the brake portion side of the hand chain fitting groove.

Further, the present invention is configured as a second means, in which the guide member is composed of one metal plate, and a substantially cylindrical portion is formed by winding one side of the metal plate. A guide portion that also serves as a reinforcing rib is formed, and a flat plate portion formed on the other side of the metal plate forms a mounting seat portion for welding the guide member to the handcart cover, and further, one end of the flat plate portion. Is formed so as to be bent and extended in a substantially L-shape to form the protruding guide portion.

[0009]

【Example】

 An embodiment of the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 1, the chain block has a first side plate 2 and a second side plate 3 which are arranged facing each other with a stay bolt 1 at a predetermined interval. Further, a load sheave 5 is rotatably mounted via a pinion shaft 4.

On the side of the first side plate 2, a claw 7 is engaged with a claw shaft 6 fixedly implanted in the side plate 2, and is fitted to the pinion shaft 4 so as not to rotate relative to it. A ratchet wheel 9 and a pair of brake linings 10 and 10 are externally fitted to the hub 8. The pawl 7 is engaged with the ratchet wheel 9, and is screwed onto the screw shaft portion 11 of the pinion shaft 4. The brake lining 10 is pressure-contacted to the ratchet wheel 9 via a handwheel 12 to form a brake unit 13.

A speed reducing mechanism (not shown) covered by a gear case 14 is provided on the side of the second side plate 3, and a handwheel 12 screwed to the screw shaft 11 of the pinion shaft 4 is installed. By rotating with the hand chain 15, the load chain 16 suspended on the load sheave 5 is wound up or down via a reduction mechanism.

A substantially bowl-shaped handwheel cover 17 is provided on the first side plate 2, and is fixed to the first side plate 2 by the stay bolt 1. The handwheel cover 17 covers the brake portion 13 near the opening edge, and covers the handwheel 12 near the bottom portion. As shown in FIG. 2 (A), the handrail guide 17 extends to the peripheral wall near the bottom portion. Window 18 is open.

The hand cart 12 has a hand chain fitting groove 19 around which the hand chain 15 is wound, and groove walls 20 and 20 are provided on both sides of the groove 19.

The above configuration is similar to the configuration of a conventionally known chain block, and therefore will not be described in further detail.

As shown in FIG. 2 to FIG. 4, guide members 21 and 21 are welded and fixed to the upper edge portions of the hand chain lead-out window 18 of the hand wheel cart cover 17, respectively. A guide portion 22 also serving as a reinforcing rib that extends in the width direction of the hand chain fitting groove 19 of the hand truck 12, and from the reinforcing rib and guide portion 22 toward the groove wall 20 located on the brake portion 13 side of the hand chain fitting groove 19. And a protruding guide portion 23 facing the front.

As shown in FIG. 4B, the guide member 21 is formed by molding a single metal plate made of an iron plate, a steel plate or the like, and one side of the metal plate is wound. The guide portion 22 which also functions as the reinforcing rib is constituted by a substantially cylindrical portion which is formed by mounting, and the flat plate portion formed on the other side portion of the metal plate is attached to weld the guide member 21 to the handwheel cover 17. The seat portion 24 is formed, and further, the flat plate portion is bent and extended in an approximately L shape at one end of the mounting seat portion 24, thereby forming the protruding guide portion 23.

Therefore, as shown in FIGS. 3 (A) and 3 (B), the guide member 21 causes the mounting seat portion 24 to move along the inner surface of the edge portion of the hand chain lead-out window 18 in the hand wheel cart cover 17. By spot welding 25, it is welded and fixed at a predetermined position. In this fixed state, as shown in FIGS. 2 (A) and 2 (B), the reinforcing rib / guide portion 22 is formed in the hand chain fitting groove 19. While being arranged in the width direction, the protruding guide portion 23 is arranged toward the groove wall 20 located on the brake portion 13 side.

[0019]

[Effect of device]

 According to the present invention, since the guide member 21 is provided at the edge portion of the hand chain guide window 18 of the hand wheel cart cover 17, the hand wheel 15 is suitably guided when the hand wheel 15 is pulled to rotate the hand wheel 12. be able to. That is, the hand chain 15 that is pulled up from the hand chain fitting groove 19 in a raised state is smoothly guided in the circumferential direction of the hand chain wheel 12 by the cylindrical reinforcing rib / guide portion 22 having the outer peripheral curved surface. . Moreover, the hand chain 15 is prevented by the projecting guide portion 23 from overcoming the groove wall 20 of the hand chain fitting groove 19 and moving to the brake portion 13 side, and is guided in the lateral direction of the hand wheel cart 12. Be done.

Further, according to the present invention, since the guide member 21 is formed of a single metal plate, the guide member 21 is compact and lightweight, and can be provided at a low cost. By spot welding 25 on 24, assembly can be performed quickly and easily.

Further, according to the present invention, the guide member 21 is welded and fixed to the hand-catch wheel cover 17, and the cylindrical reinforcing rib / guide portion 22 is accommodated along the edge of the hand-cable lead-out window 18. Therefore, not only a simple guide function, but also a reinforcing function for increasing the strength of the handcuff cover 17 has the effect of two birds with one stone.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an example of a chain block embodying the present invention.

FIG. 2 shows an embodiment of the present invention, (A) is a side view of the hand-wagon cover, and (B) is a sectional view taken along the line AA.

FIG. 3 shows the same embodiment of the present invention, (A) is a front view of the handwheel cover seen from the opening side, and (B) is its B-
A sectional view taken along the line B and (C) are bottom views of the guide member.

4A and 4B show the same embodiment of the present invention, in which FIG. 4A is a rear view of the handwheel cover as seen from the bottom side, and FIG. 4B is a perspective view of a guide member.

[Explanation of symbols]

 12 Hand-Chain 13 Brake Part 15 Hand-Chain 17 Hand-Chain Cover 18 Hand-Chain Outlet Window 19 Hand-Chain Fitting Groove 20 Groove Wall 21 Guide Member 22 Reinforcing Rib / Guide Guide 23 Protruding Guide 24 24 Mounting Seat 25 Spot Welding

Claims (2)

[Scope of utility model registration request] 1. A handrail guide window is provided on a peripheral wall near the bottom of the handrail cart cover while the brake portion is covered by the portion near the opening edge of the handrail cart cover which is substantially bowl-shaped, and the handrail is covered by the portion near the bottom portion. In the chain block, a guide member welded and fixed to an edge portion of the hand chain lead-out window has a reinforcing rib / guide portion that extends in the width direction of the hand chain fitting groove of the hand truck, and the reinforcing rib / guide portion guides the hand chain fitting. A hand chain guide device for a chain block, comprising: a protruding guide portion facing a groove wall located on the brake portion side of the groove. 2. The guide member is made of one metal plate, and the reinforcing rib / guide part is constituted by a substantially cylindrical part formed by winding one side of the metal plate.
A flat plate portion formed on the other side of the metal plate constitutes a mounting seat portion for welding the guide member to the handwheel cover, and further, one end of the flat plate portion is bent and extended in a substantially L shape. The hand chain guide device for the chain block according to claim 1, wherein the protruding guide portion is configured by the above.