Universal wheel with braking function

Abstract

The utility model discloses a universal wheel with a braking function, which comprises a wheel, a connecting shaft lever, a braking component and a pressing component, a mounting frame is arranged outside the wheel, a rotating device is arranged on the outer wall of the connecting shaft lever, the braking component is used for braking the wheel, and the pressing component is used for pressing the braking component. The design of the connecting shaft rod, the pressing assembly and the brake assembly is utilized, the pressing assembly is arranged in the connecting shaft rod, a tool is inserted into a penetrating hole and a polygonal hole, rotation of a rotating ring and a first limiting block is conducted, the first limiting block extrudes a moving block, the moving block drives a linkage rod to move synchronously, and the braking effect is achieved. And the linkage rod pushes the brake block to mutually rub with the wheel to stop rotation of the wheel, so that a worker does not accidentally touch a rotating ring in the connecting shaft rod in this way, and the stability of wheel brake is ensured.

Description

Technical Field

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

[0002] Universal wheels are an existing mobile device for pallet trucks. By being installed at the bottom end of the pallet truck floor, the pallet truck can be pushed to move in any horizontal direction.

[0003] In order to stop the cart from moving, a brake device is installed on the universal wheel to stop the rotation of the wheel, thereby stopping the movement of the cart. The existing universal wheel brake device drives the spring sheet to rotate in a crowbar-like manner by stepping on the pedal, and the crowbar drives the brake block to squeeze and rub against the wheel, thereby stopping the rotation of the universal wheel. When using this method, it is necessary to move the side of the universal wheel with the pedal set to the outside of the bottom plate coverage area before stepping on the pedal. Therefore, the pedal is always exposed during the period when the universal wheel is locked. When the staff accidentally touches the pedal while walking, it will cause the pedal to move, causing the pedal to rotate under the action of the spring sheet restoring force, thereby moving the brake block away from the wheel, allowing the wheel to rotate, and causing the cart to move. Utility Model Content

[0004] The purpose of the present invention is to provide a universal wheel with a braking function to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a universal wheel with a braking function, comprising a wheel, a mounting frame for mounting the wheel provided on the outside of the wheel, a protective cover for shielding and protecting the mounting frame provided on the outside of the mounting frame, and further comprising:

[0006] A connecting shaft, the connecting shaft being arranged on the top of the mounting frame, and an outer wall of the connecting shaft being provided with a rotating device for universal rotation;

[0007] A brake assembly, the brake assembly being disposed inside the mounting frame and being used to brake the wheels;

[0008] A pressing assembly is provided inside the connecting shaft and is used for pressing the brake assembly.

[0009] Preferably, an installation cavity for installing a downward pressure component is provided inside the connecting shaft, and the downward pressure component includes a rotating ring and a first limiting block. The outer wall of the rotating ring is fixedly connected to the end of the first limiting block, a polygonal hole is provided on one side of the rotating ring, a through hole is provided on the top of the inner wall of the installation cavity, and a rotating groove for rotating the first limiting block is provided on the top of the inner wall of the installation cavity.

[0010] Preferably, a moving block is provided at the bottom end of the rotating circle, a semicircular groove is provided at the top end of the moving block, a first limiting block is provided inside the semicircular groove to extrude the rotating roller, the bottom end of the moving block is fixedly connected to a linkage rod, the outer wall of the bottom of the linkage rod is provided with a second limiting block, and the bottom end of the second limiting block is fixedly connected to a lower pressure plate for pressing down the brake assembly.

[0011] Preferably, the outer wall of the linkage rod is provided with a protective shell, the top of the protective shell is provided with a circular groove, the outer wall of the bottom of the moving block is provided with a first spring, and the bottom of the first spring is arranged in the circular groove.

[0012] Preferably, a first snap-fitting groove is provided at the bottom end of the lower pressure plate, the brake assembly includes a pressing block and a brake block, a through-slot is provided at the top end of the pressing block for inserting the lower pressure plate, a second snap-fitting groove is provided at the bottom end of the inner wall of the through-slot for matching with the first snap-fitting groove, and the brake block is arranged at the bottom end of the pressing block.

[0013] Preferably, a through slot is provided at the bottom end of the through slot, and the linkage rod is slidably inserted into the through slot.

[0014] Preferably, the outer sleeve of the pressing block is provided with a mounting block for installing the brake assembly, the outer wall of the mounting block is fixedly connected to the inner wall of the mounting frame, the top of the mounting block is provided with a slot for installing the pressing block and the brake block, the bottom end of the inner wall of the slot is provided with a movable hole for the brake block to slide through, and the bottom end of the pressing block is provided with a second spring for pushing the pressing block.

[0015] Preferably, a receiving groove is provided at the bottom of the brake block, and a prompt block is sleeved inside the receiving groove.

[0016] The technical effects and advantages of this utility model are:

[0017] The utility model utilizes the design of the connecting shaft, the pressing assembly and the brake assembly, and arranges the pressing assembly inside the connecting shaft, so that a tool is inserted into the through hole and the polygonal hole to rotate the rotating circle and the first limiting block, so that the first limiting block squeezes the moving block, so that the moving block drives the linkage rod to move synchronously, so that the linkage rod pushes the brake block and the wheel to rub against each other, stopping the rotation of the wheel. At the same time, the linkage rod drives the pressing plate through the second limiting block, so that the first snap-fitting groove and the second snap-fitting groove of the pressing block are snapped with each other, limiting the rotation of the universal wheel. In this way, the staff will not accidentally touch the rotating circle inside the connecting shaft, thereby ensuring the stability of the wheel brake. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the wheel and the connecting shaft rod of the utility model.

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the pressing component and the mounting block of the utility model.

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the downward pressing component of the utility model.

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the brake assembly of the present invention.

[0024] Figure 7 This is a schematic diagram of the three-dimensional structure of the installation block of the utility model.

[0025] Figure 8 This is a schematic diagram of the cross-sectional structure of the brake block of the utility model.

[0026] In the figure: 1. Wheel; 2. Protective cover; 3. Mounting frame; 4. Connecting shaft; 5. Rotating device; 6. Pressing assembly; 61. Rotating circle; 62. First limiting block; 63. Moving block; 64. Rotating roller; 65. First spring; 66. Linking rod; 67. Second limiting block; 68. Pressing plate; 69. Protective shell; 7. Braking assembly; 71. Pressing block; 72. Braking block; 73. Second spring; 74. Prompt block; 8. Mounting block. DETAILED DESCRIPTION

[0027] 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.

[0028] The utility model provides Figure 1-7 The universal wheel with a braking function shown in the figure includes a wheel 1, a mounting frame 3 for mounting the wheel 1 is provided on the outside of the wheel 1, a protective cover 2 for shielding and protecting the mounting frame 3 is provided on the outside of the mounting frame 3, and further includes:

[0029] A connecting shaft 4 is provided on the top of the mounting frame 3, and a rotating device 5 for universal rotation is provided on the outer wall of the connecting shaft 4;

[0030] The brake assembly 7 is arranged inside the mounting frame 3 and is used to brake the wheel 1;

[0031] The pressing assembly 6 is arranged inside the connecting shaft 4 and is used to press the brake assembly 7.

[0032] Specifically, the interior of the connecting shaft 4 is provided with an installation cavity for installing the pressing assembly 6, and the pressing assembly 6 includes a rotating ring 61 and a first limiting block 62. The outer wall of the rotating ring 61 is fixedly connected to the end of the first limiting block 62. A polygonal hole is provided on one side of the rotating ring 61, and a through hole is provided on the top of the inner wall of the installation cavity. A rotating groove for rotating the first limiting block 62 is provided on the top of the inner wall of the installation cavity. A moving block 63 is provided at the bottom end of the rotating ring 61, and a semicircular groove is provided at the top of the moving block 63. The first limiting block 62 is used to squeeze the rotating roller 64, and the bottom end of the moving block 63 is fixedly connected to a linkage rod 66. The outer wall of the bottom of the linkage rod 66 is provided with a second limiting block 67. The bottom end of the second limiting block 67 is fixedly connected to a lower pressure plate 68 for pressing down the brake assembly 7. The outer wall of the linkage rod 66 is provided with a protective shell 69. The top of the protective shell 69 is provided with a circular groove. The outer wall of the bottom of the moving block 63 is provided with a first spring 65. The bottom of the first spring 65 is set in the circular groove, and the bottom end of the lower pressure plate 68 is provided with a first snap-fit ​​groove.

[0033] Furthermore, a first bearing is provided in the middle of the wheel 1, and the wheel 1 is sleeved on the outer wall of the first bearing. A screw is inserted in the middle of the first bearing, and the screw is inserted in the bottom of the mounting frame 3, so that the mounting frame 3 and the wheel 1 are installed. The outer wall of the mounting frame 3 and the inner wall of the protective cover 2 are fixedly connected by bolts. The protective cover 2 is sleeved on the outer wall of the mounting frame 3. A circular hole is opened on the top of the protective cover 2. The rotating device 5 is sleeved in the circular hole of the protective cover 2. The rotating device 5 is a second bearing and a shaft seal. The shaft seal is sleeved on the outside of the second bearing, and the second bearing is sleeved on the outside of the connecting shaft 4, so as to realize the universal rotation of the wheel 1. Two first limiting blocks 62 are provided, and the two first limiting blocks 62 are respectively on both sides of the outer wall of the rotating circle 61. The polygonal hole can be a regular hexagon, and the rotating groove is used to limit the rotation range of the rotating circle 61. The two first limiting blocks 62 are arc-shaped, but of different lengths. When the rotating circle 61 is rotated, the short first limiting block 62 rotates in the rotating groove. At this time, the long first limiting block 62 will squeeze the rotating roller 64, so that the rotating roller 64 squeezes the moving block 63 toward the mounting block 8. The moving block 63 is connected to the linkage rod 66 by means of threaded insertion, thereby driving the linkage rod 66 to move synchronously. At the same time, the first spring 65 is continuously squeezed under the restriction of the circular groove of the protective shell 69. The linkage rod 66 and the second limiting block 67 are fixedly connected by a threaded connection. The linkage rod 66 drives the second limiting block 67 to move synchronously. The second limiting block 67 is welded and fixed to the lower pressure plate 68. The second limiting block 67 drives the lower pressure plate 68 to move synchronously, so that the lower pressure plate 68 moves toward the direction close to the pressing block 71.

[0034] Specifically, the brake assembly 7 includes a pressing block 71 and a brake block 72. The top of the pressing block 71 is provided with a through slot for inserting the lower pressure plate 68, and the bottom end of the inner wall of the through slot is provided with a second snap-fitting slot for adapting to the first snap-fitting slot. The brake block 72 is arranged at the bottom end of the pressing block 71, and the bottom end of the through slot is provided with a through slot. The linkage rod 66 slides and inserts inside the through slot. The outer sleeve of the pressing block 71 is provided with a mounting block 8 for installing the brake assembly 7. The outer wall of the mounting block 8 is fixedly connected to the inner wall of the mounting frame 3. The top of the mounting block 8 is provided with a slot for installing the pressing block 71 and the brake block 72. The bottom end of the inner wall of the slot is provided with a movable hole for sliding and inserting the brake block 72. The bottom end of the pressing block 71 is provided with a second spring 73 for pushing the pressing block 71.

[0035] When the first locking cam 72 is in the closed position, the second locking cam 72 is in the closed position, and the second locking cam 72 is in the closed position, so that the locking cam 72 is locked. The bottom end of the brake block 72 is brought into contact with the outer wall of the wheel 1 for friction, so that the wheel 1 stops rotating. At the same time, the pressing block 71 squeezes the second spring 73. When it is necessary to unlock the wheel 1, the rotating ring 61 is rotated by a tool to rotate the long first limiting block 62 away from the rotating roller 64. Under the driving force of the first spring 65 and the second spring 73, the moving block 63 is pushed away from the wheel 1, so that the rotating roller 64 is located between the two first limiting blocks 62. The rotating ring 61 limits the further movement of the rotating roller 64. At this time, the lower pressure plate 68 and the linkage rod 66 are respectively away from the pressing block 71 and the brake block 72, thereby unlocking the wheel 1. In this way, the rotating ring 61 is inside the connecting shaft 4, so that when the wheel 1 is locked, the wheel 1 will not be unlocked due to human error.

[0036] Specifically, a receiving groove is provided at the bottom of the brake block 72 , and a prompt block 74 is sleeved inside the receiving groove.

[0037] When the wheel 1 is stopped for a long time, friction loss will be caused on the bottom of the brake block 72. When the loss reaches a certain extent, the braking effect of the brake block 72 will be weakened, so that the wheel 1 can still rotate when the universal wheel is in the brake state. The brake block 72 is located inside the mounting block 8, which makes it inconvenient to observe the wear of the brake block 72. Therefore, a reminder block 74 is installed at the wear warning line position of the brake block 72. The storage groove is a circular through groove, and the reminder block 74 is a cylinder. The reminder block 74 is made of polyurethane and is added with a striking color during production, such as red. When the brake block 72 is worn to the position of the reminder block 74, the reminder block 74 will rub against the wheel 1, causing the outer wall of the wheel 1 to be adhered to the color of the reminder block 74. When the wheel 1 resumes rotation, the outer wall of the wheel 1 will be adhered to red, thereby serving as a reminder to the staff to replace the brake block 72.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A universal wheel with a braking function, comprising a wheel (1), a mounting frame (3) for mounting the wheel (1) being provided on the outside of the wheel (1), and a protective cover (2) for shielding and protecting the mounting frame (3) being provided on the outside of the mounting frame (3), characterized in that: Also includes: A connecting shaft (4), the connecting shaft (4) being arranged on the top of the mounting frame (3), and the outer wall of the connecting shaft (4) being provided with a rotating device (5) for universal rotation; A brake assembly (7), the brake assembly (7) being arranged inside the mounting frame (3), and the brake assembly (7) being used for braking the wheel (1); A pressing assembly (6) is provided inside the connecting shaft (4), and the pressing assembly (6) is used for pressing the brake assembly (7).

2. The universal wheel with braking function according to claim 1, characterized in that: The interior of the connecting shaft (4) is provided with an installation cavity for installing a pressing assembly (6), and the pressing assembly (6) includes a rotating ring (61) and a first limiting block (62). The outer wall of the rotating ring (61) is fixedly connected to the end of the first limiting block (62), and a polygonal hole is provided on one side of the rotating ring (61). A through hole is provided on the top of the inner wall of the installation cavity, and a rotating groove is provided on the top of the inner wall of the installation cavity for rotating the first limiting block (62).

3. The universal wheel with braking function according to claim 2, characterized in that: A moving block (63) is provided at the bottom end of the rotating circle (61), a semicircular groove is provided at the top end of the moving block (63), a first limiting block (62) is provided inside the semicircular groove for squeezing a rotating roller (64), the bottom end of the moving block (63) is fixedly connected to a linkage rod (66), the outer wall of the bottom of the linkage rod (66) is sleeved with a second limiting block (67), and the bottom end of the second limiting block (67) is fixedly connected to a lower pressure plate (68) for pressing down the brake assembly (7).

4. The universal wheel with braking function according to claim 3, characterized in that: The outer wall of the linkage rod (66) is provided with a protective shell (69), the top of the protective shell (69) is provided with a circular groove, the outer wall of the bottom of the moving block (63) is provided with a first spring (65), and the bottom of the first spring (65) is arranged in the circular groove.

5. The universal wheel with braking function according to claim 3, characterized in that: The bottom end of the lower pressure plate (68) is provided with a first snap-fitting groove, and the brake assembly (7) includes a pressing block (71) and a brake block (72). The top end of the pressing block (71) is provided with a through-slot for inserting the lower pressure plate (68), and the bottom end of the inner wall of the through-slot is provided with a second snap-fitting groove for matching with the first snap-fitting groove, and the brake block (72) is arranged at the bottom end of the pressing block (71).

6. The universal wheel with braking function according to claim 5, characterized in that: A through slot is provided at the bottom end of the through slot, and the linkage rod (66) is slidably inserted into the through slot.

7. The universal wheel with braking function according to claim 5, characterized in that: The outer sleeve of the pressing block (71) is provided with a mounting block (8) for mounting the brake assembly (7), the outer wall of the mounting block (8) is fixedly connected to the inner wall of the mounting frame (3), the top of the mounting block (8) is provided with a slot for mounting the pressing block (71) and the brake block (72), the bottom end of the inner wall of the slot is provided with a movable hole for sliding and inserting the brake block (72), and the bottom end of the pressing block (71) is provided with a second spring (73) for pushing the pressing block (71).

8. The universal wheel with braking function according to claim 5, characterized in that: A receiving groove is provided at the bottom of the brake block (72), and a prompt block (74) is sleeved inside the receiving groove.

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