CN201339405Y

CN201339405Y - Dropping-prevention safety protection device

Info

Publication number: CN201339405Y
Application number: CNU2008202157500U
Authority: CN
Inventors: 蒋育新; 吴海红
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-11-27
Filing date: 2008-11-27
Publication date: 2009-11-04
Anticipated expiration: 2018-11-27

Abstract

The utility model relates to a dropping-prevention safety protection device, comprising a bracket, a steel wire rope and a hook; one end of the hook is a hook shape, and the hook is toward to a guide rail, a plurality of crosspieces are distributed on the guide rail, the hook is articulated with the bracket, a fixed pulley is arranged in the middle of a right side or a left side of the bracket, the fixed pulley is arranged at the inner side of the hook, a retaining ring is arranged on the back surface of the hook, the steel wire rope goes around the fixed pulley and penetrates through the retaining ring, and a pressure spring component is arranged between the hook and the bracket. When an upper overlapping door is positioned in an opening state, once the steel wire rope is broken owning to abrasion or ageing, the constraining force to the hook is lost, therefore, the hook rotates around the bracket owning to the function of the pressure spring, the door can be hung on the cross piece close to the inner side of the guide rail in the dropping off process by the hook, so as to further prevent the door from being dropped off continuously and to cause accidents.

Description

A kind of anti-whereabouts safety guard

Technical field:

The utility model relates to a kind of door, particularly relates to a kind of safety guard of folded formula door.

Background technology:

Along with rapid development of economy, the increasing rapidly of industries such as air-transport industry and ship, the also corresponding increases of demand such as the sand blasting room of therefore various large-scale hangar doors and shipyard, spraying room.Because this type of door opening size is bigger, this class door all adopts folded door in the market.Going up folded door is made up of PVC cord, some institutes such as cord framework, bottom bracket, door lifter, wire rope and guide rail.The PVC cord is fixed on some cord frameworks and the bottom bracket more uniformly, being provided with directive wheel can move up and down along the guide rail on the door opening column at the two ends of cord framework and bottom bracket, when opening the door, door lifter starts, wire rope is wrapped on the reel of door lifter, drive bottom bracket and cord framework and upwards stack successively, realize the unlatching of door.But there are some adverse factors in this class door: because the door needs repeatedly open and closure is used repeatedly, wearing and tearing or aging phenomenon can appear in the long-term back wire rope that uses, simultaneously because the size of door is bigger, the weight of door is corresponding bigger, when steel rope abrasion or be aged to a certain degree can occur the fracture, in case fracture occurs, door will fall down, and consequence is serious.In order to overcome the above-mentioned defective that folded door wire cable rupture, Chinese patent ZL200620073195.3 discloses a kind of wire rope that prevents because of the aging safety guard that weares and teares or rupture.This device has solved the problem that causes the accident behind the original wire cable rupture undoubtedly, but still have deficiency: 1. directly wire rope is fixed on the hook owing to this mechanism, according to relevant regulations, the fixed pulley pitch diameter of lay winding wire ropes should be greater than 20 times of wirerope diameter, therefore the fixed pulley of large-size can't be set on hook, so door is opened the confidential power of bearing whole door of back pullout (BPO), door lifter is in bigger load for a long time and easily produces permanent deformation, causes door lifter to damage.2. because extension spring is in the tension duty always, use the elasticity of back extension spring to lose efficacy for a long time,, so just do not have the effect of safeguard protection in case wire rope is linked up with and can not rotated around support because of the elastic failure of extension spring because of wearing and tearing or aging the fracture.

The utility model content:

The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of door lifter that can either make laborsaving, can prevent the anti-whereabouts safety guard of extension spring elastic failure again.

The utility model is achieved in that a kind of anti-whereabouts safety guard, comprise folded door bottom bracket, wire rope and hook, one end of described hook is a hook-type, the guide rail of hook on the door opening column of last folded door, corresponding to this hook, on guide rail, be furnished with some crosspieces with matching, hook is hinged with support, it is characterized in that: the left side or the right middle device at described support have fixed pulley, and fixed pulley places hook inboard; At the hook back side one back-up ring is arranged, described wire rope is walked around fixed pulley and is passed from described back-up ring, between described hook and support compression spring component is installed.

When last folded door is in opening, in case wire rope is because of wearing and tearing or aging the fracture, wire rope will lose the restraint forces to hook, this moment, hook rotated around support because of the effect of stage clip, door will be hooked on the inboard close crosspiece of guide rail by hook in dropping process like this, and is accidents caused with the further whereabouts that prevents door.

The utility model compared with prior art has following advantage:

1. should adopt fixed pulley to drive wire rope by anti-whereabouts safety device, fixed pulley and door lifter and framework have been born the weight of door body jointly, can make door lifter laborsaving, have prolonged the application life of door lifter like this.

2. adopt adjustable stage clip structure to realize the rotation of linking up with,, can make compression spring component be in optimum state by the adjustment of adjusting nut, need not to change spring, improve the application life of protective device in case the long-time elasticity of back stage clip of using reduces.

Description of drawings:

Fig. 1 is a kind of anti-whereabouts described in the utility model safety guard structural representation

1. guide rail 2. crosspieces 3. are linked up with 4. wire rope, 5. back-up rings, 6. compression spring components, 7. adjusting nuts, 8. fixed pulleys, 9. supports

The specific embodiment:

As can be seen from Figure 1, a kind of anti-whereabouts safety guard, comprise folded door bottom bracket 9, wire rope 4 and link up with 3, one end of described hook 3 is a hook-type, the guide rail 1 of hook 3 on the door opening column of last folded door, corresponding to this hook 3, on guide rail 1, be furnished with some crosspieces with matching 2, described hook 3 is hinged with support 9, wire rope 4 one ends link to each other with door lifter, the other end links to each other with the upper frame of last folded door, it is characterized in that: the left side or the right middle device at described support 9 have fixed pulley 8, and described fixed pulley 8 places described hook 3 inboards; At described hook 3 back sides one back-up ring 5 is arranged, described wire rope 4 is walked around fixed pulley 8 and is passed from described back-up ring 5, between described hook 3 and support 9 compression spring component 6 is installed.

In case wire rope 4 is because of wearing and tearing or aging the fracture, will lose restraint forces to linking up with 3, linking up with 3 this moment can rotate around support 9 because of the effect of stage clip, door will be hooked on the crosspiece 2 of close guide rail 1 inboard by linking up with 3 in dropping process like this, and is accidents caused with the further whereabouts that prevents door.

In order to improve the operating efficiency of compression spring component, described compression spring component 6 hinge joints are between described hook 3 and support 9.

In order to prevent the flexibility decrease of compression spring component 6, compression spring component 6 is provided with adjusting nut 7.

Described adjusting nut 7 is a double nuts structure, prevents nut loosening like this under the situation that shaking appears in support 9.

Claims

1. anti-whereabouts safety guard, comprise folded door bottom bracket (9), wire rope (4) and hook (3), one end of described hook (3) is a hook-type, the guide rail (1) of hook (3) on the door opening column of last folded door, be furnished with some crosspieces with matching (2) corresponding to this hook (3), on guide rail (1), described hook (3) is hinged with support (9), it is characterized in that: the left side or the right middle device at described support (9) have fixed pulley (8), and described fixed pulley (8) places described hook (3) inboard; At described hook (3) back side one back-up ring (5) is arranged, described wire rope (4) is walked around fixed pulley (8) and is passed from described back-up ring (5), between described hook (3) and support (9) compression spring component (6) is installed.

2. a kind of anti-whereabouts according to claim 1 safety guard is characterized in that: described compression spring component (6) links between described hook (3) and support (9).

3. a kind of anti-whereabouts according to claim 1 safety guard, it is characterized in that: compression spring component (6) is provided with adjusting nut (7).

4. a kind of anti-whereabouts according to claim 3 safety guard is characterized in that: described adjusting nut (7) is a double nuts structure.