CN212206591U

CN212206591U - Free roller

Info

Publication number: CN212206591U
Application number: CN202020304932.6U
Authority: CN
Inventors: 董鹏宇; 张晓冰; 刘春霞
Original assignee: Shanxi Weiai Vehicle Testing Technology Co ltd
Current assignee: Shanxi Weiai Vehicle Testing Technology Co ltd
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2020-12-22
Anticipated expiration: 2030-03-12

Abstract

The utility model discloses a free drum, which comprises a frame, frame both sides inner wall fixedly connected with link, link one side is rotated and is connected with first brake shoe, first brake shoe top is provided with first cylinder, frame bottom inner wall connection has first gasbag, first gasbag top surface fixedly connected with head rod, first brake shoe is kept away from link one side and is rotated mutually with head rod one side and be connected, the head rod is kept away from first brake shoe one side and is rotated and be connected with the second brake shoe, second brake shoe top is provided with the second cylinder, second cylinder top is provided with the wheel, the utility model discloses in, through setting up devices such as first gasbag, second gasbag, replace the hose by dedicated gasbag, the gasbag is more reliable and the life-span is longer, sets up convenient and practical.

Description

Free roller

Technical Field

The utility model relates to an automobile inspection equipment technical field especially relates to free cylinder.

Background

The method is characterized in that the braking performance detection is carried out on the automobile for guaranteeing the running safety of the automobile after the automobile leaves a factory and is used for a period of time when the automobile leaves the factory, the quick and effective method is carried out on a braking detection table, for the automobile driven by double rear axles, the wheel of one axle in the double axles is supported on the braking detection table during detection, the other axle is supported on a free roller, the free rotation of the wheel supported on the free roller is guaranteed, and after the detection is finished, the free roller can brake, so that the wheel on the free roller can obtain enough adhesive force to drive the automobile to drive away from the braking table.

The three-free roller structure on the current market is as follows: the three rollers are supported on the frame through bearings and are not mutually connected and can rotate freely, a brake shoe is arranged below each of the three rollers, an inflatable hose is arranged below each of the three brake shoes, when compressed air is injected into the hose, the hose is expanded from a flat state, and the brake shoes are lifted to brake the rollers.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a free roller.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the free roller comprises a rack, connecting frames are fixedly connected to the inner walls of two sides of the rack, a first brake shoe is rotatably connected to one side of each connecting frame, a first roller is arranged at the top of each first brake shoe, a first air bag is connected to the inner wall of the bottom of the rack, a first connecting rod is fixedly connected to the outer surface of the top of the first air bag, one side, away from the connecting frames, of each first brake shoe is rotatably connected with one side of the corresponding first connecting rod, a second brake shoe is rotatably connected to one side, away from the first brake shoe, of each first connecting rod, a second roller is arranged at the top of each second brake shoe, wheels are arranged at the top of each second roller, a second air bag is connected to one side, located on the first air bag, of the inner wall of the bottom of the rack, a second connecting rod is fixedly connected to the outer surface of the top of the second air bag, one side, away from the second brake, and a third roller is arranged at the top of the third brake shoe, bearings are arranged on the concentric axis of the first roller, the concentric axis of the second roller and the concentric axis of the third roller, and a chain wheel is fixedly connected to the rear end of each bearing.

As a further description of the above technical solution:

the quantity of link is two sets of, and the central axis about the frame is symmetrical between two sets of links, and the link is through welding and frame looks fixed connection.

As a further description of the above technical solution:

a movable pin is arranged between the first brake shoe and the connecting frame, and a through connecting hole is formed in the position, corresponding to the movable pin, inside one side of the connecting frame.

As a further description of the above technical solution:

the size of the first connecting rod is equal to that of the second connecting rod, and the first connecting rod and the second connecting rod are symmetrical about the central axis of the second roller.

As a further description of the above technical solution:

and the front walls of the first air bag and the second air bag are provided with inflating nozzles.

As a further description of the above technical solution:

the chain wheels are arranged in three groups, the three groups of chain wheels are parallel to each other, and a roller chain is arranged between every two adjacent groups of chain wheels.

The utility model discloses following beneficial effect has:

1. the utility model provides a free drum compares with traditional device, and the device simple structure through setting up devices such as first gasbag, second gasbag, replaces the hose by dedicated gasbag, and the gasbag is more reliable and the life-span is longer, sets up convenient and practical.

2. Compared with the traditional device, the device has larger innovation and improvement in structure and design, the first brake shoe, the second brake shoe, the third brake shoe, the roller chain, the chain wheel, the bearing and the like are arranged, the bearing is fixedly connected with the chain wheel, the chain wheels are connected through the roller chain, the first roller, the second roller and the third roller are linked with each other, the braking force on the first roller, the second roller and the third roller can be concentrated on the second roller, the second braking force is large enough, the automobile can be enabled to smoothly drive away from the detection platform, meanwhile, the first brake shoe, the second brake shoe and the third brake shoe play a role simultaneously, the first roller, the second roller and the third roller can be uniformly abraded with the first brake shoe, the second brake shoe and the third brake shoe, the service life of the brake shoe is prolonged, and the device is worthy of being widely popularized.

Drawings

FIG. 1 is a front view of the free roller of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic view of the connection structure between the free roller and the wheel;

FIG. 4 is a schematic view of the connection structure among the first roller, the second roller, the third roller, the roller chain, the sprocket and the bearing.

Illustration of the drawings:

1. a frame; 2. a third drum; 3. a wheel; 4. a first connecting rod; 5. a connecting frame; 6. a first brake shoe; 7. a first air bag; 8. an air charging nozzle; 9. a first drum; 10. a second drum; 11. a second air bag; 12. a second connecting rod; 13. a roller chain; 14. a bearing; 15. a sprocket; 16. a second brake shoe; 17. a third brake shoe; 18. and a movable pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present invention provides an embodiment: the free roller comprises a rack 1, connecting frames 5 are fixedly connected to the inner walls of two sides of the rack 1, one side of each connecting frame 5 is rotatably connected with a first brake shoe 6, a first roller 9 is arranged at the top of each first brake shoe 6, a first air bag 7 is connected to the inner wall of the bottom of the rack 1, a first connecting rod 4 is fixedly connected to the outer surface of the top of each first air bag 7, one side, far away from the connecting frames 5, of each first brake shoe 6 is rotatably connected with one side of each first connecting rod 4, one side, far away from the first brake shoe 6, of each first connecting rod 4 is rotatably connected with a second brake shoe 16, a second roller 10 is arranged at the top of each second brake shoe 16, a wheel 3 is arranged at the top of each second roller 10, a second air bag 11 is connected to one side, far away from the first brake shoe 6, of the inner wall of the bottom of the rack 1, a, a third brake shoe 17 is rotatably connected to one side, far away from the second brake shoe 16, of the second connecting rod 12, a third roller 2 is arranged at the top of the third brake shoe 17, a bearing 14 is arranged on the concentric axis of the first roller 9, the concentric axis of the second roller 10 and the concentric axis of the third roller 2, and a chain wheel 15 is fixedly connected to the rear end of the bearing 14.

The connecting frames 5 are two groups, the two groups of connecting frames 5 are symmetrical about the central axis of the frame 1, the connecting frames 5 are fixedly connected with the frame 1 through welding, so that the first brake shoe 6 and the second brake shoe 16 can be conveniently and rotatably connected, a movable pin 18 is arranged between the first brake shoe 6 and the connecting frame 5, a through connecting hole is formed in the position, corresponding to the movable pin 18, inside one side of each connecting frame 5, so that the first brake shoe 6 and the connecting frame 5 can be conveniently rotated mutually, the size of the first connecting rod 4 is equal to that of the second connecting rod 12, the first connecting rod 4 and the second connecting rod 12 are symmetrical about the central axis of the second roller 10, so that the first brake shoe 6, the second brake shoe 16 and the third brake shoe 17 can be conveniently connected mutually, the front wall of the first air bag 7 and the second air bag 11 are both provided with inflating nozzles 8, so that compressed air can be conveniently injected into the first air bag 7 and the second air bag 11 through the inflating nozzles 8, the chain wheels 15 are in three groups, the chain wheels 15 in the three groups are parallel to each other, and a roller chain 13 is arranged between every two adjacent chain wheels 15, so that the first roller 9, the second roller 10 and the third roller 2 can be linked conveniently.

The working principle is as follows: the utility model provides a free drum has great improvement innovation with traditional device, when using this free drum, after the braking detection to wheel 3, inflate to first gasbag 7 and second gasbag 11 inside by charging connector 8, first gasbag 7 and second gasbag 11 rise and drive first connecting rod 4 and second connecting rod 12 and rise, because first brake shoe 6, second brake shoe 16 and third brake shoe 17 rotate each other with first connecting rod 4, second connecting rod 12 and link 5 and be connected, so drive first brake shoe 6, second brake shoe 16 and third brake shoe 17 and brake first cylinder 9, second drum 10 and third drum 2, wheel 3 rotates forward and has a backward effort to second drum 10, second drum 10 is in the braking state at this moment, second drum 10 can produce a forward effort to wheel 3, because the first roller 9, the second roller 10 and the third roller 2 are linked through the roller chain 13, the braking force on the first roller 9, the second roller 10 and the third roller 2 is transmitted to the second roller 10, and a sufficient reaction force can be provided to drive the wheel 3 away from the detection platform.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. Free cylinder, including frame (1), its characterized in that: the improved brake device is characterized in that connecting frames (5) are fixedly connected to inner walls of two sides of the rack (1), one side of each connecting frame (5) is rotatably connected with a first brake shoe (6), a first roller (9) is arranged at the top of each first brake shoe (6), a first air bag (7) is connected to the inner wall of the bottom of the rack (1), a first connecting rod (4) is fixedly connected to the outer surface of the top of the first air bag (7), one side, far away from the connecting frames (5), of each first brake shoe (6) is rotatably connected with one side of the first connecting rod (4), a second brake shoe (16) is rotatably connected to one side, far away from the first brake shoe (6), of each first connecting rod (4), a second roller (10) is arranged at the top of each second brake shoe (16), wheels (3) are arranged at the top of each second roller (10), and a second air bag (11) is connected to one side, just located on, second gasbag (11) top surface fixedly connected with second connecting rod (12), second connecting rod (12) one side rotates with second brake shoe (16) and is connected, second brake shoe (16) one side is kept away from in second connecting rod (12) rotates and is connected with third brake shoe (17), third brake shoe (17) top is provided with third cylinder (2), be provided with bearing (14) on the coaxial line of first cylinder (9), the coaxial line of second cylinder (10) and the coaxial line of third cylinder (2), bearing (14) rear end fixedly connected with sprocket (15).

2. The free drum of claim 1, wherein: the quantity of link (5) is two sets of, and the central axis about frame (1) is symmetrical between two sets of link (5), and link (5) are through welding and frame (1) looks fixed connection.

3. The free drum of claim 1, wherein: a movable pin (18) is arranged between the first brake shoe (6) and the connecting frame (5), and a through connecting hole is formed in the position, corresponding to the movable pin (18), in the inner part of one side of the connecting frame (5).

4. The free drum of claim 1, wherein: the size of the first connecting rod (4) is equal to that of the second connecting rod (12), and the first connecting rod (4) and the second connecting rod (12) are symmetrical about the central axis of the second roller (10).

5. The free drum of claim 1, wherein: and the front walls of the first air bag (7) and the second air bag (11) are provided with inflating nozzles (8).

6. The free drum of claim 1, wherein: the number of the chain wheels (15) is three, the three groups of chain wheels (15) are parallel to each other, and a roller chain (13) is arranged between every two adjacent groups of chain wheels (15).