Universal wheel braking structure

Abstract

The utility model discloses a universal wheel braking structure, and relates to the technical field of universal wheels. Comprising a pushing plate arranged on one side of the foot stand, a fixing block is arranged in the middle of one side of the pushing plate, a fixing seat is arranged in the middle of the other side of the pushing plate, and the fixing seat is arranged on the other side of the pushing plate. And an occlusion gear ring is arranged on the inner wall of one side of the fixed seat. When the universal wheel is braked, a worker drags the fixing block to drive the pushing plate to move, the pushing plate moves and drives the meshing gear ring on the fixing base to gradually move in the direction of the trundle, and after the meshing gear is completely meshed with the fixing gear, the fixing base can brake the trundle. The fixing seats are arranged on the two sides of the trundle, and the situation that fixing of the trundle is affected due to the fact that the trundle is stained with too much dust when the trundle rolls on the ground can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of universal wheels, in particular to a universal wheel braking structure. Background Art

[0002] A swivel is a so-called movable caster, and its structure allows for 360-degree horizontal rotation. Casters are a general term, including movable casters and fixed casters. Fixed casters do not have a rotating structure and cannot rotate horizontally but only vertically. These two types of casters are generally used in combination. For example, the structure of a trolley is two fixed wheels in the front and two movable swivel wheels in the back near the push handle. A swivel wheel means that the bracket installed on the caster wheel can rotate 360 ​​degrees horizontally under dynamic or static loads.

[0003] The existing universal wheel brake device is a device that closely fits the brake pads to the universal wheel. When the wheel rolls on the ground, it will be covered with dust. Excessive accumulation of dust will affect the fixing process. Therefore, we propose a universal wheel brake structure. Utility Model Content

[0004] The purpose of the present utility model is to provide a universal wheel brake structure to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: a universal wheel brake structure, comprising: a foot frame,

[0006] A brake mechanism is provided on the inner side of the tripod and is used to brake the casters;

[0007] A steering mechanism is provided on the top of the tripod and is used to steer the casters;

[0008] The braking mechanism comprises:

[0009] A pushing plate is arranged on one side of the tripod, a fixing block is arranged in the middle of one side of the pushing plate, a fixing seat is arranged in the middle of the other side of the pushing plate, and an engaging tooth ring is arranged on the inner wall of one side of the fixing seat.

[0010] As a specific solution in the technical solution of the present application, a push rod is fixedly provided on the inner wall of one side of the tripod, the output end of the push rod passes through the outside of the tripod, and a push plate is provided on the outer wall of the output end of the push rod.

[0011] As a specific solution in the technical solution of this application, casters are arranged between the tripods, a rotating shaft is arranged on the inner side of the casters, both ends of the rotating shaft pass through the outer wall of the tripod, and fixed gears are arranged on the outer wall at both ends of the rotating shaft, and the fixed gears are engaged with the engaging gear ring.

[0012] As a specific solution in the technical solution of this application, the steering mechanism includes:

[0013] A steering seat is set at the top of the tripod, and a fixed shaft is set in the middle of the inner side of the top of the steering seat. The top of the fixed shaft passes through the fixed plate, and a fixing cap is set on the outer wall of the top of the fixed shaft. The fixing cap is rotatably set on the fixed plate, and the fixed plate is located at the top of the steering seat.

[0014] As a specific solution in the technical solution of this application, a fixing ring is provided at the bottom end of the fixing plate, a forward ratchet and a reverse ratchet are provided in sequence inside the fixing ring, and an annular belt is provided on the inner wall of the steering seat, which rotates around the outer wall of the fixing ring.

[0015] As a specific solution in the technical solution of this application, the outer wall of the fixed shaft is provided with an H-shaped plate, the inner walls at both ends of the H-shaped plate are provided with sliding grooves, sliders are provided in the sliding grooves for sliding, pawls are provided between the sliders, and a spring is provided on one side of the pawl, and the upper and lower ends of the pawl are respectively engaged with the forward ratchet and the reverse ratchet.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The universal wheel braking structure has the following advantages: when braking the universal wheel, the staff drags the fixed block to drive the movement of the pushing plate. When the pushing plate moves, the engaging gear ring on the fixed seat gradually moves toward the caster. After the engaging gear and the fixed gear are fully engaged, the fixed seat can brake the caster. The fixed seats are arranged on both sides of the caster to prevent the caster from being affected by excessive dust when rolling on the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an isometric schematic diagram of the present invention;

[0019] Figure 2 It is an isometric side cross-sectional schematic diagram of the present utility model;

[0020] Figure 3 This is a schematic cross-sectional diagram of the steering mechanism distribution of the present utility model;

[0021] Figure 4 This is a schematic diagram of the internal cross-section of the steering mechanism of the present invention;

[0022] Figure 5 This is a front cross-sectional plan view of the brake mechanism of the present invention;

[0023] Figure 6 This is a schematic cross-sectional diagram of the brake mechanism distribution of the present utility model.

[0024] In the figure: 1. caster; 101. tripod; 2. brake mechanism; 201. fixed block; 202. push plate; 203. push rod; 204. fixed gear; 205. fixed seat; 206. engaging gear ring; 3. steering mechanism; 301. fixed shaft; 302. steering seat; 303. fixed plate; 304. fixed cap; 305. annular belt; 306. fixed ring; 307. H-shaped plate; 308. pawl; 309. reverse ratchet; 310. spring; 311. slider; 312. forward ratchet; 313. slide groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] like Figures 1-6 As shown, the utility model provides a technical solution: a universal wheel braking structure, including a caster 1, a braking mechanism 2, a steering mechanism 3 and other parts. The braking mechanism 2 can brake the caster 1. The braking mechanism 2 is set on both sides of the tripod 101 instead of the outside of the caster 1. This can prevent the caster 1 from rolling on the ground due to excessive dust, which affects the fixation of the caster 1. The steering mechanism 3 can steer the caster 1 to satisfy its own clockwise or counterclockwise rotation.

[0027] like Figure 5-6As shown, in the embodiment of the present application, a pushing plate 202 is provided on one side of the tripod 101, a fixing block 201 is provided in the middle of one side of the pushing plate 202, a fixing seat 205 is provided in the middle of the other side of the pushing plate 202, and an inner wall of one side of the fixing seat 205 is provided with a bite gear ring 206, which is meshed with a fixing gear 204, and the fixing gear 204 is provided on the outer walls of both ends of the rotating shaft 102. The rotating shaft 102 is located on the inner side of the caster 1, and both ends pass through to the outside of the tripod 101. A push rod 203 is fixedly provided on the inner wall of one side of the tripod 101, and the output end of the push rod 203 passes through the outside of the tripod 101, and the outer wall of the output end of the push rod 203 is provided with a pushing plate 202. Specifically, when the universal wheel is braked, the caster 1 is mainly braked. Braking is performed. Since a rotating shaft 102 is fixedly provided on the inner side of the caster 1, and fixed gears 204 are fixedly provided on the outer walls of both ends of the rotating shaft 102, braking of the caster 1 is braking of the fixed gear 204. A groove is provided on one side of the tripod 101, and the fixed gear 204 is located in the groove and rotates in the groove. The reason why the fixed gear 204, the rotating shaft 102, and the caster 1 are fixedly connected is to ensure that after the fixed gear 204 is braked, the caster 1 is synchronously driven to brake, and there will be no slipping of the rotating shaft 102 on the inner wall of the fixed gear 204 or the caster 1 on the outer wall of the rotating shaft 102 under braking, thereby driving the caster 1 to continue to rotate. Four circular holes are provided on one side of the tripod 101, and the inner walls of the circular holes are provided. The bottom end is fixed with a push rod 203, and the push plate 202 is also provided with round holes around it. The output end of the push rod 203 is fixedly set in the round hole on the push plate 202. The push rod 203 here can be a telescopic rod or an electric push rod. The fixed block 201 set on one side of the push plate 202 plays a dragging role. When the push rod 203 is set as a telescopic rod, it is necessary to manually rely on dragging the fixed block 201 to drive the push plate 202 to move, thereby driving the meshing tooth ring 206 on the fixed seat 205 to engage or separate with the fixed gear 204. The fixed seat 205 is fixedly set on the other side of the push plate 202, and the fixed seat 205 is filled in the groove on the tripod 101. The outer wall of the fixed seat 205 is in contact with the inner wall of the groove. Therefore, When 206 and the fixed gear 204 engage with each other, the caster 1 will stop rotating. The engaging tooth ring 206 on the fixing seat 205 is at the same height as the fixed gear 204, and can fix it when the fixed gear 204 is fully engaged. Therefore, when the engaging tooth ring 206 does not brake the fixed gear 204, a part of the fixing seat 205 is still located in the groove on the tripod 101, which can prevent impurities from entering the groove on the tripod 101 during the rolling process of the caster 1 and affecting the engagement between the fixing seat 205 and the fixed gear 204. The pushing plate 202 is equal to the diameter of the arc part below the tripod 101. When braking, the pushing plate 202 is attached to the tripod 101, which can make the entire universal wheel look simple and beautiful.

[0028] like Figure 3-4 As shown, in the embodiment of the present application, a steering seat 302 is provided at the top of the tripod 101, and a fixed shaft 301 is provided at the middle part of the inner side of the top of the steering seat 302. The top of the fixed shaft 301 passes through the fixed plate 303, and a fixing cap 304 is provided on the outer wall of the top of the fixed shaft 301. The fixing cap 304 is rotatably set on the fixed plate 303. The fixed plate 303 is located at the top of the steering seat 302, and a fixing ring 306 is provided at the bottom of the fixing plate 303. A positive ratchet 312 and a reverse ratchet 309 are sequentially provided in the fixing ring 306. An annular belt 305 is provided on the inner wall of the steering seat 302, and the annular belt 305 rotates around the outer wall of the fixing ring 306. Specifically, during the rolling process of the universal wheel, it is necessary to turn to adapt to the road The steering seat 302 is needed to adjust the route. The steering seat 302 is connected to the fixed plate 303 through the fixed shaft 301, and the fixed shaft 301 is fixed on the steering seat 302. The fixed shaft 301 is rotatably set on the fixed plate 303 through the fixed cap 304. When the universal wheel is rotated, the items carried on the top of the universal wheel can only be driven by the tripod 101 outside the caster 1 to drive the steering seat 302 to rotate, thereby driving the caster 1 to turn. If you want to drive the caster 1 to turn by rotating the fixed plate 303, it is impossible, because the fixed shaft 301 is rotatably connected to the fixed plate 303, the fixed plate 303 will rotate, and the steering seat 302 will not be affected by the rotation of the fixed plate 303.

[0029] like Figure 3-4As shown, in the embodiment of the present application, an H-shaped plate 307 is provided on the outer wall of the fixed shaft 301, and a slide groove 313 is provided on the inner wall at both ends of the H-shaped plate 307. A slider 311 is provided in the slide groove 313 for sliding. A pawl 308 is provided between the sliders 311, and a spring 310 is provided on one side of the pawl 308. The upper and lower ends of the pawl 308 are respectively engaged with the forward ratchet 312 and the reverse ratchet 309. Specifically, when the universal wheel is turned, the caster 1 drives the steering seat 302 to rotate. The steering seat 302 rotates while driving the fixed shaft 301 to rotate inside the fixed plate 303. The fixed shaft 301 is restricted on the fixed plate 303 by the fixed cap 304. The fixed plate 303 is provided with a circular groove for placing the fixed cap 304, which can keep the upper surface of the fixed plate 303 flat. When the steering seat 302 rotates, the annular belt 305 rotates on the outer wall of the fixed ring 306. The outer wall of the fixed ring 306 is provided with an annular groove for providing a rotation environment for the annular belt 305 and can The steering seat 302 can be limited to prevent the steering seat 302 and the fixed plate 303 from separating from each other during the rotation process. When the steering seat 302 rotates, the steering seat 302 drives the H-shaped plate 307 to rotate. The H-shaped plate 307 is fixedly arranged on the outer wall of the fixed shaft 301. During the rotation of the H-shaped plate 307, the pawl 308 drives the spring 310 to be compressed under the action of the ratchet. During the compression of the spring 310, the sliders 311 on both sides of the pawl 308 slide in the slide groove 313, and the sliders 311 It is used to limit the pawl 308. Since the pawl 308 is engaged with the forward ratchet 312 and the reverse ratchet 309, there is no need to worry about the pawl 308 detaching from the H-shaped plate 307. The upper part of the pawl 308 is engaged with the reverse ratchet 309, and the lower part of the pawl 308 is engaged with the forward ratchet 312. Therefore, when the steering seat 302 rotates forward or reverse under the action of the caster 1, the pawl 308 can rotate while engaging with the ratchet, thereby adapting to the steering operation of the caster 1.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the accompanying embodiments and their equivalents.

Claims

1. A universal wheel brake structure, comprising: The tripod (101) is characterized by: A braking mechanism (2) is provided on the inner side of the foot frame (101) and is used to brake the caster (1); A steering mechanism (3) is provided at the top of the foot frame (101) and is used to steer the caster (1); The braking mechanism (2) comprises: A push plate (202) is provided on one side of the tripod (101), a fixing block (201) is provided in the middle of one side of the push plate (202), a fixing seat (205) is provided in the middle of the other side of the push plate (202), and an engaging tooth ring (206) is provided on the inner wall of one side of the fixing seat (205).

2. The universal wheel brake structure according to claim 1, characterized in that: A push rod (203) is fixedly provided on the inner wall of one side of the tripod (101), an output end of the push rod (203) extends through the outside of the tripod (101), and a push plate (202) is provided on the outer wall of the output end of the push rod (203).

3. The universal wheel brake structure according to claim 2, characterized in that: A caster (1) is provided between the tripods (101), a rotating shaft (102) is provided inside the caster (1), both ends of the rotating shaft (102) pass through the outer wall of the tripod (101), and fixed gears (204) are provided on the outer walls of both ends of the rotating shaft (102), and the fixed gears (204) are meshed with the engaging gear ring (206).

4. The universal wheel brake structure according to claim 3, characterized in that: The steering mechanism (3) comprises: A steering seat (302) is provided at the top of the tripod (101), a fixed shaft (301) is provided at the middle portion of the inner side of the top of the steering seat (302), the top of the fixed shaft (301) passes through the fixed plate (303), and a fixed cap (304) is provided on the outer wall of the top of the fixed shaft (301), the fixed cap (304) is rotatably provided on the fixed plate (303), and the fixed plate (303) is located at the top of the steering seat (302).

5. The universal wheel brake structure according to claim 4, characterized in that: A fixing ring (306) is provided at the bottom end of the fixing plate (303), a forward ratchet (312) and a reverse ratchet (309) are sequentially provided in the fixing ring (306), and an annular belt (305) is provided on the inner wall of the steering seat (302), and the annular belt (305) rotates around the outer wall of the fixing ring (306).

6. The universal wheel brake structure according to claim 4, characterized in that: The outer wall of the fixed shaft (301) is provided with an H-shaped plate (307), and the inner walls at both ends of the H-shaped plate (307) are provided with sliding grooves (313). Slide blocks (311) are provided in the sliding grooves (313) for sliding. A pawl (308) is provided between the slide blocks (311), and a spring (310) is provided on one side of the pawl (308). The upper and lower ends of the pawl (308) are respectively engaged with the forward ratchet (312) and the reverse ratchet (309).

Images