CN205802785U - A kind of Weight type Automatic unhooking hook - Google Patents

Abstract

The utility model discloses a kind of Weight type Automatic unhooking hook, fix connection one end in ordinary lifting hook opening oblique direction and be furnished with the bar of weight, be connected with bearing pin and spin head with in the middle part of suspension hook at it；Being provided with double rocker mechanism at suspension hook opening part, its frame is suspension hook, and suspension hook head is just inserted in the hole on lower rocking bar when hoisting heavy, and connecting rod and upper end rocking bar conllinear；And it is furnished with suitable counterweight at the head of two rocking bars.This utility model achieves suspension hook when putting down goods, suspension hook Automatic-falling under gravity, when lifting cargo, suspension hook mouth can be by rocking bar self-closed under gravity locked function, thus solve without manually breaking off relations when putting down goods, and the practical problem that goods comes off during hanging.This utility model saves manpower, safe and reliable and easy and simple to handle.

Description

A heavy hammer type self-detachable hook

technical field

The utility model relates to a lifting device, in particular to a lifting hook.

Background technique

Lifting equipment is a kind of indispensable construction machinery, and most of them need to use hooks to hang heavy objects. In order to prevent the heavy objects from falling off during the lifting process and causing serious accidents, the hooks currently used are all designed with a certain anti-decoupling device, but this has resulted in the need for a person to hang the weight on the lower platform when lifting heavy objects. Objects, the high platform also needs a person to manually unhook, resulting in a waste of human resources. In order to ensure the strength of the hook, the weight of the hook is generally large, and frequent operation for a long time will quickly cause human fatigue and tendon damage.

Utility model content

The purpose of this utility model is to provide a heavy hammer type self-detachable hook, which not only realizes the automatic falling off function of the hook when unloading goods, but also ensures that the heavy objects will not fall off during the lifting process, saves manpower, and is safe and reliable. , and easy to operate.

The technical scheme of the utility model is: a heavy hammer type self-detachable hook, which is characterized in that the head of the hook is fixedly connected to the hook weight through a rod-shaped structure, the hook is rotatably connected with the rotating head through a fixed mandrel, and the rotating head It is connected with the lifting ring by nuts and cotter pins. The upper rocker weight is fixedly connected to the head of the upper rocker. The upper rocker is rotatably connected to the middle part of the hook weight connecting rod at the lower part. Rotational connection, the lower rocker and the lower rocker are rotated and connected, and the lower rocker and the hook are rotated and connected above the hook ring, so that the hook, upper rocker, connecting rod and lower rocker form a double rocker mechanism, and the lower rocker The lower part is fixedly connected with the weight of the lower rocker, the head of the lower rocker has a hole, the suspension head of the hook is inserted into the hole, and the lifting opening is sealed, and the torsion spring is installed on the pin shaft that the upper rocker and the connecting rod are rotatably connected.

The utility model realizes that when the hook puts down the goods, the hook can automatically fall off under the action of gravity; when the goods are hoisted, the opening of the hook will be automatically closed and locked by the rocker under the action of gravity, thus solving the problem of not needing to put down the goods. Manual uncoupling, and the practical problem of cargo falling off during hoisting.

The utility model saves manpower, is safe and reliable, and is easy to operate. It can effectively avoid the problem that the goods may fall off during the lifting process, and realize the function of automatic decoupling of the hook under the action of gravity and leverage when the goods are put down, making it safer to hang the goods, and there is no need to manually unhook when unloading the goods . The structure is simple, manpower is saved, and the operation is convenient.

Description of drawings

Figure 1 is a schematic diagram of the structure of the hook in the process of lifting heavy objects.

Fig. 2 is a schematic structural diagram of the hook in a non-working state.

The numbers in the figure are as follows: 1-hook weight, 2-upper rocker weight, 3-rotary head, 4-lift ring, 5-wire rope, 6-nut, 7-cotter pin, 8-fixed mandrel, 9- Hook, 10-lower rocker, 11-lower rocker weight, 12-connecting rod, 13-torsion spring, 14-upper rocker.

detailed description

Specific embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.

The utility model fixedly connects a rod equipped with a heavy object at one end obliquely to the opening of the ordinary hook, and connects it with the middle part of the hook with a pin shaft and a rotating head to rotate; a double rocker mechanism is arranged at the opening of the hook, The frame is a hook, and the hole on the lower rocker just fits into the head of the hook when lifting heavy objects, and the connecting rod and the upper rocker are in line; and the heads of the two rockers are equipped with suitable counterweights .

As shown in Figure 1, the size of the hook is determined according to the maximum weight that needs to be lifted. The hook head is fixedly connected to the hook weight 1 through a rod-shaped structure, and the hook 9 is rotatably connected to the rotating head 3 by a fixed mandrel 8 . Swivel head 3 and suspension ring 4 are rotatably suspended connected with nut 6 and cotter pin 7 . Wire rope 5 is firmly bolted on the circular ring on suspension ring 4 tops. The upper rocker weight 2 is fixedly connected to the head of the upper rocker 14 . The upper rocker 14 is rotatably connected with the middle part of the connecting rod of the hook weight 1 at the lower part thereof. The connecting rod 12 is rotatably connected with the upper rocker 14 at the top, and is rotatably connected with the lower rocker 10 at the bottom. The lower rocker 10 and the suspension hook 9 are rotationally connected above the hook ring, so that the suspension hook 9, the upper rocker 14, the connecting rod 12 and the lower rocker 10 constitute a double rocker mechanism. The bottom of the lower rocker 10 is fixedly connected with the weight 11 of the lower rocker. Lower rocking bar 10 heads have holes, and suspension hook 9 suspenders are inserted in the hole, seal hanging mouth. The torsion spring 13 is installed on the pin shaft that the upper rocker 14 and the connecting rod 12 are rotatably connected.

During work, the upper heavy object is manually suspended, and the clockwise torque generated by its weight around the fixed mandrel 8 is far greater than the counterclockwise torque generated by the hook weight 1, so that the hook is located at the position shown in Figure 1. At this time, under the counterclockwise torque generated by the lower rocker weight 11, the lower rocker 10 is turned around the pin shaft connected to the hook 9 to the position shown in Figure 1, and the suspension head of the hook 9 is inserted into the lower rocker 10 In the hole, seal the hanging mouth, the connecting rod 12 and the upper rocker 14 are just in a straight line, and are in the dead point position. Thus, no matter how much impact force the suspension ring in the hook gives the lower rocker 10, the lower rocker 10 will not move, so as to securely close the opening of the suspension hook 9 and prevent the lifting weight from falling off due to impact and vibration during lifting , causing serious accidents. The torsion spring 13 installed on the pin shaft that is rotatably connected to the upper rocker 14 and the connecting rod 12 can prevent the impact force of the double rocker mechanism from passing through the dead center position shown in Figure 1 when the hook impacts or vibrates. Reliably ensure that the hook mouth will not open, preventing heavy objects from falling off during the lifting process and causing serious accidents.

When unloading the heavy object, when the heavy object touches the unloading platform, the wire rope 5 is slack, the clockwise moment generated by the heavy object disappears, and the counterclockwise moment generated by the hook weight 1 is slightly greater than the clockwise moment generated by the hook's own weight. 9 will rotate counterclockwise around the fixed mandrel 8 to the position shown in Figure 2. At the same time, the counterclockwise moment generated by the upper rocker weight 2 overcomes the elastic force of the torsion spring 13, so that the double rocker mechanism passes through the dead point position, and the lower rocker 10 is aligned with the upper rocker weight 2 and the lower rocker weight 11. Under the action of the clockwise torque generated by the action, turn clockwise to the position shown in Figure 2, so that the closing port of the hook is opened, and the heavy object hook automatically and smoothly falls off from the hook 9 under the action of its own gravity, realizing the hook Automatic shedding function.

When hanging heavy objects next time, hold the combined hook weight 1 and upper rocker weight 2 at the same time with your hands and exert force clockwise, because the counterclockwise moment generated by hook weight 1 is slightly greater than that generated by the hook's own weight. The clockwise torque, a very small force can make the hook rotate counterclockwise when the mouth is open, and hang the heavy object smoothly. When the hook is struggling to rise, loosen the hook weight 1 and the upper rocker weight. The hand of hammer 2, lower rocker 12 can be positioned at the position shown in Figure 1 again under the effect of lower rocker heavy hammer 11, thereby securely closes hook opening, prevents decoupling and causes serious liability accident in hoisting process.

Claims (1)

1. a Weight type Automatic unhooking hook, is characterized in that suspension hook head fixes connecting shackle weight (1), suspension hook by rod shaped structure (9) it is rotationally connected with swivel head (3) by stationary spindle (8), swivel head (3) and suspension ring (4) nut (6) and split pin (7) Rotating to hang and connect, upper rocker-counterweight (2) is fixedly connected on rocking bar (14) head, upper rocking bar (14) bottom wherein and suspension hook Being rotationally connected in the middle part of weight (1) connecting rod, connecting rod (12) is rotationally connected, at bottom and lower rocking bar on top and upper rocking bar (14) (10) being rotationally connected, lower rocking bar (10) and suspension hook (9) rotate over connection at suspension hook suspension ring, so that suspension hook (9), upper rocking bar (14), connecting rod (12) and lower rocking bar (10) constitute double rocker mechanism, lower rocking bar (10) bottom is fixing connects lower rocker-counterweight (11), Lower rocking bar (10) head is porose, and suspension hook (9) hangs head and inserts in the hole, and seals and hangs mouth, and torsion spring (13) is arranged on rocking bar (14) and connects On the bearing pin that bar (12) is rotationally connected.