CN201005165Y

CN201005165Y - Self-locking type double-insurance hook

Info

Publication number: CN201005165Y
Application number: CNU2007200678585U
Authority: CN
Inventors: 鲍勃·克劳斯·威廉; 李约翰; 迪·阿凯希
Original assignee: PENSAFE (SHANGHAI) Inc
Current assignee: PENSAFE (SHANGHAI) Inc
Priority date: 2007-03-15
Filing date: 2007-03-15
Publication date: 2008-01-16
Anticipated expiration: 2017-03-15

Abstract

The utility model discloses a double-insurance safety hook of self-locked style comprising a hook body, a hook head, an enclosed slice connected with the hook body and an unlocking slice which is capable of controlling the turning of the enclosed slice, a reset spring linked with the space of the enclosed slice and the hook body, wherein the hook head is composed of a bending portion and a sharp-nose portion, and the top of the enclosed slice forms an enclosed case which is capable of infibulating the outer rim of the bottom end of the sharp-nose portion. Compared with the existing safety hook, the ability of the utility model to bear omni-bearing loading is much stronger, in the time of the safety hook bearing external force, the possibility of the enclosed slice of the safety hook disengaging from the sharp-nose portion by accidents will be reduced greatly. The safety hook is capable of being applied to the system of falling-projection.

Description

Self-locking type double-safety safety hook

Technical field

The utility model relates to the articles for labour protection field, relates in particular to a kind of multi-purpose self-locking type double-safety safety hooks such as safety belt, safety belt, safety rope that are used for.

Background technology

Safety door hook has many different styles, and different separately purposes is also arranged.Wherein just comprise the high-altitude fall arrest.

In the construction site, work high above the ground or ground excavation scene, and all may cause the occasion of casualties, property loss because of personnel or object fall, the protection of falling is vital.In many areas, using the protection of falling is basic demand, also is legal provisions.A common cover guard system that falls is to fasten one's safety belt or safety belt to the operating personnel, with rope, cable or belt the operating personnel is connected on the fixture.For example, personnel can fasten one's safety belt or life line during operation on bridge, tower or high building usually, and life line is made by rope or belt mostly, and an end of rope or belt is fixed on the fixture of personnel institute operation.At lumbering, personnel also can fasten safety belt during operation usually on the tree bar, and belt one end of safety belt links to each other with a side of safety belt, and the other end links to each other with the opposite side of safety belt around trunk.Usually, belt has at least an end need use safety door hook, enables to be connected with safety belt or fixture easily.

In theory, if staff is with belt and safety belt is tied up on fixture securely by a life line, even so these personnel to fall also be a bit of distance, can be not dangerous before being rescued.Safety belt and the high-altitude fall arrest product that uses not is always to play a role at present, even can not prevent the generation of accident but in fact.The malfunctioning of safety door hook all can cause serious consequence on life line and the lifting operation.

Use cap liner at the safety door hook sweep, an end of life line is fixed on the jobbie, because this method is easy, so be widely used in having comprised and be hung in interior various application.But easy safety door hook may accident be opened when its cap liner is stressed.For this reason, people have developed various locking devices.Though these locking devices have reduced the possibility that the safety door hook accident is opened, they often can not prevent well cap liner direct when stressed bend or sharp mouth from safety door hook break away from.Directly stressed when safety door hook, especially when the cap liner of safety door hook bears load perpendicular to the hook longitudinal axis, also may cause the cap liner accident to break away from when for example extruding places safety door hook on the surface of solids from sharp mouth.

Summary of the invention

Technical problem to be solved in the utility model is the above-mentioned defective that overcomes prior art, provide a kind of safe class higher self-locking type double-safety safety hook, compared with prior art, the ability that this safety door hook bears comprehensive load is stronger, when safety door hook bore external force, the cap liner of this safety door hook reduced greatly from the unexpected possibility that breaks away from of the sharp mouth of safety door hook.

Self-locking type double-safety safety hook of the present utility model, the cap liner that comprises hook body, gib head, is rotationally connected with the hook body and can control the unlock chip that described cap liner rotates, be connected with back-moving spring between cap liner and the hook body, gib head comprises a bend and a sharp mouth, and the top of cap liner forms one can entangle the sealing sleeve of the outer rim of sharp mouth end.

Described cap liner comprises a pair of opposed side plate and the outer rim that is connected as a single entity with this pair of side plates, and this pair of side plates is symmetrically located at the both sides of hook body, and forms sealing sleeve with this outer rim at openend.The end of described sharp mouth forms a latch.

Self-locking type double-safety safety hook of the present utility model, the end of its gib head point mouth is enclosed in the sealing sleeve of cap liner, thereby opens cap liner of the present utility model and need an external force parallel with this end longitudinal axis.And when cap liner bore load perpendicular to the hook longitudinal axis, because the end of gib head point mouth has blocked cap liner, cap liner was difficult to be opened.Thereby self-locking type double-safety safety hook of the present utility model improved the ability that cap liner bears comprehensive load greatly, reduced the possibility that cap liner breaks away from from safety bill mouth.

Description of drawings

Fig. 1 is the front view of the utility model self-locking type double-safety safety hook;

Fig. 2 is the vertical view of the utility model self-locking type double-safety safety hook;

Fig. 3 is the upward view of the utility model self-locking type double-safety safety hook;

Fig. 4 is the right view of the utility model self-locking type double-safety safety hook;

Fig. 5 is the left view of the utility model self-locking type double-safety safety hook;

Fig. 6 is the front view of the unlock chip of the utility model self-locking type double-safety safety hook when being in open mode;

Fig. 7 is the unlock chip of the utility model self-locking type double-safety safety hook and the cap liner front view when being in open mode;

Fig. 8 is the vertical view of the utility model self-locking type double-safety safety hook among Fig. 7;

Fig. 9 is the profile along the B-B line among Fig. 2;

Figure 10 is the profile along A-A line among Fig. 1.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 is the front view of the utility model self-locking type double-safety safety hook, as shown in the figure, safety door hook 1 comprises hook body 3, and an end of hook body is a gib head 4, the other end is device such as annulus hook tail 5 or U-shaped hook normally, and safety door hook is fixed on rope, cable, belt, chain or other object.In most cases, hook body 3, gib head 4 and annulus hook tail 5 are an integral body, are made by high-intensity steel alloy or other metal, in order to gain in strength, also can forge.

Gib head 4 is an arch, and it comprises bend 41, sharp mouth 42 and the openend 43 that is connected sharp mouth 42.Distance between point mouth 42 and the hook body 3 forms an opening 10, and this opening can be fixed on the object that installs such as eyebolt, life line and safety rope etc. by safety door hook 1.Safety door hook 1 also comprises cap liner 9, is used to seal opening 10 and prevents that safety door hook 1 from slipping away from cable or other device that it was connected.Cap liner 9 is made up of 91,92 and outer rims 93 of a pair of opposed side plate, and both sides and outer rim 93 that

side plate

91,92 side plates are symmetrically located at hook body 3 constitute a sealing sleeve 99 together, as shown in figure 10.Cap liner 9 is rotationally connected with hook body 3 by a pivot 15.Cap liner 9 has enable possition and closed position.As shown in Figure 1, in the closed position, it is across opening, thereby seals opening 10; Cap liner 9 is rotated around pivot 15, can open cap liner 9, make it be in the enable possition, as shown in Figure 7.In the enable possition, object can pass opening comparatively unobstructedly and enter bend 41.As most safety door hooks, cap liner 9 has a spring 20, and as shown in Figure 9, the effect of spring 20 is to make cap liner 9 be in the normally closed state that closes.Preferably, as shown in Figure 7, the end of sharp mouth 42 forms a latch 421, and latch 421 stretches out, and its outer rim 421B can be inserted in the sealing sleeve 99 to small part.Latch 421 can be rectangle or round member.Latch 421 shown in Figure 7 is triangular shape, is with a tip, so that enter sealing sleeve 99 more easily.Latch and sealing sleeve be other shape also, as long as latch 421 can partly be inserted in sealing sleeve 99 at least when cap liner 9 is in the closed position.Regardless of latch and sealing sleeve shape, when cap liner 9 was in the closed position, this latch and sealing sleeve can not only stop towards the external force of hook body 3 with interior promotion, can also stop the side of cap liner stressed.In one embodiment, sealing sleeve is the cover of an opening, and latch is trapped among wherein.As another kind of embodiment, as shown in figure 10, sealing sleeve surrounds two sides and the outer surface of latch, but does not surround the inner surface near bend 41.

The tip designs of sharp mouth 42 is become the shape of latch and uses corresponding sealing sleeve can improve the ability that cap liner bears comprehensive load greatly in 95 (see figure 9)s of the top of cap liner 9.That is, when cap liner is closed pin bushing has been strengthened the ability that cap liner bears side and positive load in sealing sleeve, prevented that effectively situations such as damage, bending or skew from appearring in cap liner.This structure has strengthened the bulk strength and the structural intergrity of safety door hook greatly.

Usually, apply an external force vertical with the coupler body longitudinal axis, the cap liner pivot is rotated between the opening and closing position, cap liner can be opened, and object enters bend.Similar with prior art, in the utility model, by pivot 15, cap liner 9 is also rotatable.But what be different from prior art is that opening cap liner of the present utility model needs an external force parallel with the latch longitudinal axis.That is, when latch shape 421 is positioned at sealing sleeve 99, opens cap liner and cap liner 9 need be outwarded winding from sharp mouth 42, just cap liner leading edge 94 is removed from bend 41, as shown in Figure 7, this needs an external force parallel with the longitudinal axis of latch 421 usually.The cap liner of conventional security hook is easy to be opened when being subjected to head-on external force; And when the cap liner 9 of safety door hook is subjected to head-on external force in the utility model (in Fig. 9, marking with arrow C), owing to there is latch 421 to be enclosed within the cap liner 9 formed sealing sleeves 99, external force can impel latch 421 and sealing sleeve 99 to interact, and stops cap liner to be opened.So the utility model is opened the required external force of cap liner and is that safety door hook with prior art is distinct.Have only sealing sleeve 99 to break away from latch 421, cap liner 9 is outwarded winding from bend 41 just can be opened cap liner also again around pivot 15 rotations.Cap liner has also designed a groove (or thumb support place) 96, and as shown in Figure 6, it is convenient to make operating personnel open safety door hook.

According to practical application, safety door hook 1 can also dispose a mechanical locking mechanism and prevent that the cap liner accident from opening.As shown in Figure 1 to Figure 3, safety door hook 1 comprises a unlock chip 17, and it is in the lower position of cap liner 9.Unlock chip 17 constitutes by a pair of opposed sidewall 175,176 and with outer wall 177 that described sidewall is connected as a single entity, and sidewall 175,176 is symmetrically located at the both sides of hook body 3, and unlock chip 17 can rotate between interlock and disengaging configuration around pivot 18.The wall external symmetry ground, the left and right sides of unlock chip 17 respectively is provided with a stopper 171, and stopper 171 is positioned at the rear side of cap liner 9.Can also see that on scheming the side plate of cap liner is shaped as fan-shaped, so that rotation.Respectively be provided with an open slot 97 on the pair of side plates of described cap liner symmetrically, the size of this open slot can be held stopper 171.In addition, on the lower end of the outer rim 93 of cap liner, also be provided with an open slot that can hold described hook body.When unlock chip 18 was in interlocking pattern, stopper 17 blocked cap liner 9, made cap liner 9 to rotate and was in the close position, and keep latch 421 to be positioned at sealing sleeve 99.As shown in Figure 6 and Figure 7, when pressing unlock chip 18, unlock chip 18 is in disengaged position, this moment is rotary seal sheet 9 again, open slot on the cap liner outer rim passes hook body 3, and stopper on the unlock chip 18 171 and pivot 18 all enter into the open slot 97 on the cap liner 9, so cap liner can freely rotate and move to the enable possition.Preferably, as shown in Figure 9, between unlock chip 18 and hook body, be connected with a back-moving spring 19, be used for making unlock chip to remain on occlusal position.

Though description of the present utility model combines certain embodiments, but it should be understood by one skilled in the art that the utility model is not limited to embodiment described here, and can carry out various modifications and variations and do not deviate from spirit and scope of the present utility model.For example, also stopper can be installed on cap liner, and the open slot that can hold stopper is set on unlock chip, control the rotation of cap liner with this.

Claims

1. self-locking type double-safety safety hook, the cap liner that comprises hook body, gib head, is rotationally connected with described hook body and can control the unlock chip that described cap liner rotates, be connected with back-moving spring between described cap liner and the described hook body, described gib head comprises a bend and a sharp mouth, it is characterized in that the top of described cap liner forms one can entangle the sealing sleeve of the outer rim of described sharp mouth end.

2. safety door hook as claimed in claim 1, it is characterized in that, described cap liner comprises a pair of opposed side plate and the outer rim that is connected as a single entity with described pair of side plates, and described pair of side plates is symmetrically located at the both sides of described hook body, and forms described sealing sleeve with described outer rim at openend.

3. safety door hook as claimed in claim 2 is characterized in that, the bottom of described cap liner outer rim is provided with an open slot that can hold described hook body.

4. as each described safety door hook in the claim 1 to 3, it is characterized in that the end of described sharp mouth forms a latch.

5. safety door hook as claimed in claim 4 is characterized in that described latch has a tip.

6. as any one described safety door hook in the claim 1 to 3, it is characterized in that described unlock chip constitutes by a pair of opposed sidewall and with outer wall that described sidewall is connected as a single entity, described pair of sidewalls is symmetrically located at the both sides of described hook body; Described unlock chip and hook body are rotationally connected; Between unlock chip and hook body, be connected with back-moving spring.

7. safety door hook as claimed in claim 6 is characterized in that, the wall external symmetry ground, the left and right sides of described unlock chip respectively is provided with a stopper, and described stopper is positioned at the rear side of described cap liner; Respectively be provided with an open slot that can hold described stopper on the pair of side plates of described cap liner symmetrically.