CN202015430U

CN202015430U - Descender

Info

Publication number: CN202015430U
Application number: CN2011200701179U
Authority: CN
Inventors: 周宙龙
Original assignee: ZHEJIANG ZUOYI POWER EQUIPMENT CO Ltd
Current assignee: ZHEJIANG ZUOYI POWER EQUIPMENT CO Ltd
Priority date: 2011-03-17
Filing date: 2011-03-17
Publication date: 2011-10-26
Anticipated expiration: 2021-03-17

Abstract

A descender comprises a base plate and a movable plate, wherein the middle parts of the base plate and the movable plate are hinged; a pressure wheel is arranged between the base plate and the movable plate; the upper half part of the base plate is connected with a rope winding wheel; the base plate above the rope winding wheel is hinged with a locking piece; the back part of the base plate is connected with a handle; the handle is in linked fit with the locking piece; and the two ends of the locking piece protrude downwards to form locking parts, so as to form a descending speed control mechanism. When the descender is used, a rope bypasses the rope winding wheel and the pressure wheel in an S shape, if the handle is released without being wrenched, the rope is tightened by the weight of a human body to enable one end of the locking piece to naturally press the rope to achieve a self-locking effect and prevent the descender from descending. If the handle is wrenched too tightly, the other end of the locking piece is linked to press the rope so as to prevent the descender from descending. The descender is not locked only when the strength holding the handle is appropriate to balance the position of the locking piece. The descender provided by the utility model is simple in structure and convenient in use, can reasonably control the descending speed and is good in safety.

Description

Drop device

Technical field: the utility model relates to a kind of slow drop device that falls of rope that uses.

Background technology: in the field of high building fire-fighting or work high above the ground, personnel may occur must be by the situation of rope decline.The decline personnel can adopt direct hand to grab the mode of rope climbing, though convenient, to the requirement height of muscle power and technical ability, and also dangerous.Now special rope drop device has been arranged also, rope can have been worn around wherein, grasped drop device and open switch and just can descend, improved security, reduced the requirement of user's technical ability, and saved muscle power.But the structure of this drop device is reasonable not enough, if the user causes decrease speed too fast easily, even may cause accidentally dropping in alarm because factor such as anxiety is held switch always, and decrease speed also is easy to generate soon and lands impact.

Summary of the invention: at the deficiencies in the prior art, the utility model provides a kind of decrease speed to control rational drop device.

The utility model is included in substrate and the portable plate that the middle part is hinged, be provided with pinch roller between substrate and the portable plate, the substrate first half also is connected with draws cable pulley, on the substrate of drawing above the cable pulley, also be hinged with lock dog, the substrate back is connected with handle, this handle and lock dog are linked, and the two ends of lock dog all down protruding be lock part, formation decrease speed controlling organization.

The utility model is worn rope to walk around with serpentine in use and is drawn cable pulley and pinch roller, if spanner handle and unclamping not, human body weight tension rope can make lock dog one end push down rope naturally and form self-locking and can't descend.If the tension that handle is pulled, the lock dog other end are pushed down rope by interlock and also can't be descended.Only hold handle strength appropriateness and make the lock dog position balance just can locking, simple in structure, easy to use, can rationally control decrease speed, security is good.

Further specify the utility model below in conjunction with drawings and Examples.

Description of drawings: Fig. 1 is the main structure schematic diagram of embodiment.

Fig. 2 is the rearview of Fig. 1.

Fig. 3 is the schematic diagram that handle unclamps user mode.

Fig. 4 is the schematic diagram that handle is wrenched user mode.

Embodiment: as depicted in figs. 1 and 2, substrate 1 and portable plate 2 are hinged at the middle part, be provided with pinch roller 4 between substrate 1 and the portable plate 2, substrate 1 first half also is connected with draws cable pulley 3, also be hinged with lock dog 5 on the substrate of drawing above the cable pulley 31, substrate 1 back is connected with handle 6, and this handle 6 and lock dog 5 are linked, and the two ends of lock dog 5 are all protruding down to be lock part, constitutes the decrease speed controlling organization.Usually handle 6 and lock dog 5 can be linked by connecting rod 10.Because pinch roller 4 does not need whole circle to contact with the rope of walking around 12, pinch roller 4 can adopt the shape that lacks the piece wheel.Present embodiment is provided with two breach 11 in a side of portable plate 2, with the corresponding screens of the pivot pin of drawing cable pulley 3 and lock dog 5,, relatively simple for structure respectively as the activity orientation structure of portable plate 2, the convenient manufacturing can certainly be adopted the activity orientation structure of other form as required.

During use, open portable plate 2, rope 12 is worn to walk around with serpentine draw cable pulley 3 and pinch roller 4, close up portable plate 2 again, and rope 12 ends that pass with pinch roller 4 places are as fixing pinnacled stiff end.When handle 6 is not held and is unclamped, as shown in Figure 3, rope 12 is pulled inward tightly from the top of serpentine under the human body weight effect, and the corresponding end of lock dog 5 nature is pressed in rope 12 to draw on the cable pulley 3 and forms self-locking, the decline that can't relatively move of drop device and rope 12.Firmly held and when being wrenched, as shown in Figure 4, the other end of lock dog 5 is drop-down by interlock by connecting rod 10 when handle 6, rope 12 is pressed on draws on the cable pulley 3 equally, also can't be descended.The dynamics of having only handle 6 to be held is moderate, and the two ends of lock dog 5 can not compressed when drawing cable pulley 3, just can descend, and the control decrease speed is convenient, and security is good.

Present embodiment is connected with safety button 7 in the bottom of substrate 1, the belt etc. that can be buckled in the decline personnel is like this located, the tenesmus that prevents to accidentally drop, and safety in utilization is better.The bottom of portable plate 2 is corresponding also to be provided with through hole 8, and through hole 8 side openings and be provided with elastic block piece 9, can easily safety button 7 be snapped in the through hole 8 when portable plate 2 closes up like this.

Claims

1. drop device, be included in substrate and portable plate that the middle part is hinged, be provided with pinch roller between substrate and the portable plate, the substrate first half also is connected with draws cable pulley, it is characterized by: also be hinged with lock dog (5) on the substrate (1) of drawing cable pulley (3) top, substrate (1) back is connected with handle (6), and this handle (6) and lock dog (5) are linked, and the two ends of lock dog (5) are all protruding down to be lock part, constitutes the decrease speed controlling organization.

2. drop device according to claim 1 is characterized by: the bottom of substrate (1) is connected with safe button (7), and the bottom of portable plate (2) is corresponding also to be provided with through hole (8), and through hole (8) side openings and be provided with elastic block piece (9).

3. drop device according to claim 1 and 2 is characterized by: handle (6) and lock dog (5) are linked by connecting rod (10).