Double-friction-wheel descender

Abstract

The utility model relates to the technical field of rope descenders, in particular to a double-friction-wheel descender which comprises a descender body, the descender body comprises a fixed main plate and a movable handle, the movable handle is rotatably connected with the fixed main plate, two friction wheels are arranged between the fixed main plate and the movable handle and are arranged at intervals, and the friction wheels are connected with the movable handle. The upper end and the lower end of the outer side wall of the friction wheel are provided with planes, and reserved mounting holes are formed in the bottom of the fixed main plate. The utility model has the advantages of simple structure, convenience in use, strong generality, better safety performance and capability of adapting to users with more weight ranges, and meets the use requirements.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of rope descender, specifically relates to double friction wheel descender. BACKGROUND

[0002] Rope descender is a device used in the process of rope descent, which controls the descent speed by increasing the friction force on the rope to ensure the safety of the user. Rope descender is widely used in technical rescue, high-altitude operation, and any situation that requires precise control of descent speed and position. Their design allows users to safely descend to the ground or designated work position without directly controlling the descent with their hands.

[0003] The current rope descender increases the friction with the rope through its internal structure, thereby achieving slow and controllable descent. Specifically, the rope descender usually has a series of columns or spools inside, and the rope is wound around these columns. By increasing or decreasing the contact area between the rope and these columns, the friction can be adjusted to control the descent speed.

[0004] However, the structure of the existing rope descender is mostly fixed, and can only adapt to users within a certain weight range. When the user's weight increases, the rope descender is prone to slipping, slowing down, or having difficulty locking, which affects the safety of the user. SUMMARY

[0005] In view of the defects of the prior art, the utility model provides a double friction wheel descender, which is simple in structure, convenient to use, and has strong universality, can adapt to more weight range of users, has better safety performance, and meets the use requirement.

[0006] To achieve the above purpose, the utility model adopts the technical scheme of:

[0007] The double friction wheel descender comprises a descender main body, the descender main body comprises a fixed main plate and a movable handle, the movable handle is rotatably connected with the fixed main plate, two friction wheels are arranged between the fixed main plate and the movable handle, the two friction wheels are arranged at intervals, the upper and lower ends of the outer side wall of the friction wheel are both provided with a plane, and the bottom of the fixed main plate is provided with a reserved mounting hole.

[0008] In the above description, as a preferred, the fixed main plate is sequentially provided with a first fixed shaft, a second fixed shaft and a third fixed shaft from top to bottom, the two friction wheels are an upper friction wheel and a lower friction wheel respectively, the upper friction wheel is installed on the upper end of the fixed main plate through the second fixed shaft, and the lower friction wheel is installed on the lower end of the upper friction wheel through the third fixed shaft.

[0009] In the above description, as preferred, the movable handle is sequentially provided with a first limiting groove, a second limiting groove and a movable hole from top to bottom, the end of the first fixed shaft is provided with a limiting plate, the size of the limiting plate is larger than the size of the first limiting groove, the first limiting groove is clamped on the first fixed shaft,

[0010] In the above description, as preferred, the end of the second fixed shaft is provided with a first nut, the size of the first nut is larger than the size of the second limiting groove, and a limiting gap is arranged between the first nut and the side wall of the upper friction wheel, the second limiting groove is clamped at the limiting gap.

[0011] In the above description, as preferred, the end of the third fixed shaft is provided with a second nut, the size of the second nut is larger than the size of the movable hole, and a mounting gap is arranged between the second nut and the side wall of the lower friction wheel, the size of the movable hole is larger than the size of the third fixed shaft, and the movable handle is mounted at the mounting gap through the movable hole.

[0012] In the above description, as preferred, the diameters of the upper friction wheel and the lower friction wheel are larger than the width of the fixed main plate, and the inner side walls of the upper friction wheel and the lower friction wheel are both provided with positioning grooves, which are matched with the fixed main plate.

[0013] In the above description, as preferred, the bottom of the fixed main plate and the movable handle are respectively provided with a first connecting hole and a second connecting hole, and the first connecting hole and the second connecting hole are positionally corresponding.

[0014] In the above description, as preferred, the descending body is made of aluminum alloy material.

[0015] The utility model discloses a fixed main plate and movable handle between being equipped with two friction wheels, and two friction wheels interval arrangement, the upper and lower ends of the outer side wall of friction wheel are all provided with plane, can use single rope or double rope according to need, and the angle of the rope winding friction wheel is arranged, and then the plane of the outer side wall of friction wheel is directly pushed to the friction wheel, and the connection of the rope is completed, and the operation is simple and convenient, the bottom of fixed main plate is equipped with the reserved mounting hole, and the reserved mounting hole can be used for installing the friction wheel or connecting the mountain climbing buckle, when installing the friction wheel, the rope is more wound a friction wheel, can effectively increase the friction, and the safety performance is better, when installing the mountain climbing buckle, the safety belt can be connected through the mountain climbing buckle, realizes double connection, improves safety and stability, can be adapted to more weight range users, and the safety performance is better, satisfies the use demand. ACCURACY OF DRAWINGS

[0016] Fig. 1 It is the structure schematic drawing of the embodiment of the utility model;

[0017] Fig. 2 It is the structure schematic drawing of the embodiment of the utility model;

[0018] Fig. 3 : the exploded structural schematic view of the embodiment of the utility model;

[0019] The drawing mark explanation is explained: 10-fixed mainboard, 101-first connecting hole, 11-first fixed shaft, 12-second fixed shaft, 13-third fixed shaft, 14-limiting plate, 15-first nut, 16-limiting gap, 17-second nut, 18-mounting gap, 19-reserved mounting hole, 20-movable handle, 21-first limiting slot, 22-second limiting slot, 23-moving hole, 24-second connecting hole, 30-upper friction wheel, 31-lower friction wheel, 32-flat surface, 33-positioning slot. DETAILED DESCRIPTION

[0020] In order to more clearly set forth the structural features, technical means and the specific purposes and functions reached by the utility model, the utility model is further explained in detail below by combining with the specific embodiments and the drawings:

[0021] The embodiment: as Figs. 1-3As shown, the double friction wheel descender comprises a descender body made of aluminum alloy material, the descender body comprises a fixed main plate 10 and a movable handle 20, the movable handle 20 is rotatably connected with the fixed main plate 10, two friction wheels are arranged between the fixed main plate 10 and the movable handle 20, and the two friction wheels are arranged at intervals, the fixed main plate 10 is sequentially provided with a first fixed shaft 11, a second fixed shaft 12 and a third fixed shaft 13 from top to bottom, the two friction wheels are respectively an upper friction wheel 30 and a lower friction wheel 31, the diameters of the upper friction wheel 30 and the lower friction wheel 31 are greater than the width of the fixed main plate 10, and the inner side walls of the upper friction wheel 30 and the lower friction wheel 31 are both provided with positioning grooves 33, the positioning grooves 33 are adapted to the fixed main plate 10, the upper friction wheel 30 is installed at the upper end of the fixed main plate 10 through the second fixed shaft 12, the lower friction wheel 31 is installed at the lower end of the upper friction wheel 30 through the third fixed shaft 13, when the upper friction wheel 30 and the lower friction wheel 31 are installed, the fixed main plate 10 is clamped in the positioning grooves 33, thereby further improving the stability of the upper friction wheel 30 and the lower friction wheel 31, and meanwhile, improving the connection stability of the fixed main plate 10 and the upper friction wheel 30 and the lower friction wheel 31, the movable handle 20 is sequentially provided with a first limiting groove 21, a second limiting groove 22 and a movable hole 23 from top to bottom, the end of the first fixed shaft 11 is installed with a limiting plate 14, the size of the limiting plate 14 is greater than the size of the first limiting groove 21, the first limiting groove 21 is clamped on the first fixed shaft 11, the end of the second fixed shaft 12 is installed with a first nut 15, the size of the first nut 15 is greater than the second limiting groove 22, and a limiting gap 16 is arranged between the first nut 15 and the side wall of the upper friction wheel 30, the second limiting groove 22 is clamped at the limiting gap 16, the end of the third fixed shaft 13 is installed with a second nut 17, the size of the second nut 17 is greater than the size of the movable hole 23, and an installation gap 18 is arranged between the second nut 17 and the side wall of the lower friction wheel 31, the size of the movable hole 23 is greater than the size of the third fixed shaft 13, the movable handle 20 is installed at the installation gap 18 through the movable hole 23, the bottom of the fixed main plate 10 and the movable handle 20 is respectively provided with a first connecting hole 101 and a second connecting hole 24, the first connecting hole 101 and the second connecting hole 24 are in position correspondence, and the first connecting hole 101 and the second connecting hole 24 are used for connecting the mountain climbing buckle of the safety rope;

[0022] The upper and lower ends of the outer side walls of the upper friction wheel 30 and the lower friction wheel 31 are both provided with planes 32, single rope or double ropes can be used according to needs, the ropes are arranged at an angle of winding the friction wheel, and then are directly pushed onto the friction wheel by the planes 32 of the outer side walls of the friction wheel, so that the connection of the ropes is completed, and the operation is simple and convenient;

[0023] The bottom of the fixed main plate 10 is provided with a reserved mounting hole 19, which can be used for mounting a friction wheel or connecting a climbing buckle.

[0024] The above is only a preferred embodiment of the present application, and is not intended to limit the present application, so any modification, equivalent replacement, improvement, etc. of the above embodiments according to the technical solution of the present application still belongs to the scope of the technical solution of the present application.

Claims

1. A dual sheave descender comprising a descender body, characterised in that: The descending device body comprises a fixed main plate and a movable handle, the movable handle is rotatably connected with the fixed main plate, two friction wheels are arranged between the fixed main plate and the movable handle, the two friction wheels are arranged at intervals, the upper and lower ends of the outer side wall of the friction wheel are provided with planes, and the bottom of the fixed main plate is provided with a reserved mounting hole.

2. The dual friction wheel descender according to claim 1, characterized in that: The fixed main plate is sequentially provided with a first fixed shaft, a second fixed shaft and a third fixed shaft from top to bottom, the two friction wheels are an upper friction wheel and a lower friction wheel, the upper friction wheel is installed on the upper end of the fixed main plate through the second fixed shaft, and the lower friction wheel is installed on the lower end of the upper friction wheel through the third fixed shaft.

3. The dual friction wheel descender according to claim 2, wherein: The movable handle is sequentially provided with a first limiting slot, a second limiting slot and a movable hole from top to bottom, the tail end of the first fixed shaft is installed with a limiting plate, the size of the limiting plate is larger than the size of the first limiting slot, and the first limiting slot is clamped on the first fixed shaft.

4. The dual friction wheel descender according to claim 3, wherein: The tail end of the second fixed shaft is installed with a first nut, the size of the first nut is larger than the size of the second limiting slot, a limiting gap is arranged between the first nut and the side wall of the upper friction wheel, and the second limiting slot is clamped at the limiting gap.

5. The dual friction wheel descender according to claim 3, wherein: The tail end of the third fixed shaft is installed with a second nut, the size of the second nut is larger than the size of the movable hole, an installation gap is arranged between the second nut and the side wall of the lower friction wheel, the size of the movable hole is larger than the size of the third fixed shaft, and the movable handle is installed at the installation gap through the movable hole.

6. The dual friction wheel descender according to claim 2, wherein: The diameters of the upper friction wheel and the lower friction wheel are larger than the width of the fixed main plate, the inner side walls of the upper friction wheel and the lower friction wheel are provided with positioning grooves, and the positioning grooves are matched with the fixed main plate.

7. The dual friction wheel descender according to claim 1, wherein: The bottoms of the fixed main plate and the movable handle are respectively provided with a first connecting hole and a second connecting hole, and the first connecting hole and the second connecting hole are in position correspondence.

8. The dual friction wheel descender according to claim 1, wherein: The descending device body is made of aluminum alloy material.

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