Roller brake structure

Abstract

The utility model provides a kind of roller brake structure, belong to material transfer technical field, including connecting frame and the rotary setting of connecting frame upper rotary bar, rotary bar end part is equipped with roller, further include movable slot, it is transversely passed and is set on connecting frame;Movable rod, it is slidably arranged in movable slot, movable rod card moves towards the locking effect formed by the axis of roller or towards the outer wall surface of roller sliding;Towline, one end is located in the handle of transfer device, the other end is located in connecting frame and is directly or transmission connection with movable rod, pull towline can drive movable rod to slide;Elastic member, it is arranged in movable slot and is connected with movable rod, cancel towline elastic member can drive movable rod to reset;The utility model can indirectly operate the locking structure of roller at the handle of transfer device, so as not to bend or press with foot, and then increase the practicability and applicability of the roller.

Description

Technical Field

[0001] This utility model relates to the field of material transfer equipment technology, specifically to a roller brake structure. Background Technology

[0002] In material handling equipment (such as handcarts, pallet trolleys, and industrial trolleys), rollers are core moving components, and their braking performance directly affects the safety and convenience of equipment use. In existing technologies, roller braking structures typically adopt a fixed design, meaning that braking components (such as brake pads, brake calipers, or locking mechanisms) are directly installed near the roller.

[0003] Currently, mainstream braking methods share the following common drawbacks:

[0004] Inconvenience of operation: Braking usually requires bending over and touching the braking components near the roller with your hand, or pressing with your foot to apply the brakes. In scenarios with frequent starts and stops or when loading heavy objects, this type of operation can easily lead to operator fatigue and poses a safety hazard due to instability.

[0005] Limitations of applicable scenarios: Fixed braking structures are difficult to adapt to users of different heights, and in narrow spaces or densely packed equipment working environments, bending over or using one's feet is easily restricted by space, reducing work efficiency.

[0006] Ergonomic shortcomings: The existing design does not fully consider ease of operation and does not conform to the natural movement habits of the human body. Especially in emergency braking scenarios that require rapid response, the traditional operation method may delay the braking opportunity.

[0007] To address the aforementioned issues, the industry urgently needs a structure that allows for braking via remote control (such as a handle) to improve ease of operation, applicability, and safety. Utility Model Content

[0008] In view of this, the present invention provides a roller brake structure. The present invention allows the locking structure of the roller to be operated indirectly at the handle of the transfer device, thereby eliminating the need to bend over or press with the foot, thus increasing the practicality and applicability of the roller.

[0009] To solve the above-mentioned technical problems, this utility model provides a roller brake structure, including a connecting frame and a rotating rod rotatably mounted on the connecting frame. The end of the rotating rod is provided with a roller, and the rotating rod can drive the roller to rotate. It also includes a movable groove, which is horizontally disposed on the connecting frame and located above the rotating rod.

[0010] The movable rod is slidably disposed in the movable groove. The movable rod can be moved toward the axis of the roller or slid toward the outer wall of the roller to form a locking effect.

[0011] The traction line has one end located at the handle of the transfer device, and the other end located inside the connecting frame and directly or via transmission to the movable rod. Pulling the traction line can cause the movable rod to slide, and the sliding of the movable rod can lock or unlock the roller.

[0012] The elastic element is located in the movable groove and connected to the movable rod. By removing the traction line, the elastic element can drive the movable rod to reset.

[0013] The inner surface of the roller is provided with a gear-shaped limiting plate, and multiple limiting grooves are formed on the limiting plate. The multiple limiting grooves are arranged in a circular array. When the movable rod moves toward the axis of the roller, the roller can be locked.

[0014] The elastic element is a spring, with one end of the spring connected to the top of the movable rod and the other end of the spring connected to the top wall of the movable groove.

[0015] The connecting frame is also equipped with a brake groove, which is connected to the bottom of the movable groove. A brake plate is rotatably installed in the brake groove. The brake plate rotates along the axis of the rotating rod. A material-pulling plate is provided on the outer wall of the brake plate. When the material-pulling plate rotates, it can slide against the movable plate, thereby canceling the locking effect on the roller. The traction line is connected to the outer wall of the material-pulling plate, and the end of the traction line can drive the brake plate to rotate.

[0016] The connecting frame is provided with a relief groove, and the traction line can slide in the relief groove.

[0017] The bottom of the brake groove is connected to the bottom of the connecting frame, which facilitates the fixing of the end of the traction line.

[0018] The corresponding brake groove is also equipped with a protective cover, which is detachably connected to the bottom of the connecting frame to facilitate the protection of the connection between the end of the traction cable and the brake plate.

[0019] The protective cover has a first locking block at the top, and a second locking block is provided at the bottom of the connecting frame corresponding to the first locking block. The first locking block and the second locking block are connected together in a snap-fit ​​manner, which makes it easy to disassemble the protective cover.

[0020] The corresponding connecting frame is equipped with a connecting plate, which is fixedly connected to the transfer device, and the connecting frame is fixed to the bottom of the connecting plate by bearings.

[0021] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0022] 1. Remote control significantly improves ease of operation: The brake control is extended to the handle of the transfer device via a traction cable. Operators can brake / release directly through the handle without bending over or touching parts near the rollers. This ergonomic design is particularly suitable for scenarios involving frequent starts and stops, heavy object handling, or operation in confined spaces, greatly reducing operator fatigue and safety hazards caused by instability.

[0023] 2. Gear-shaped limiting structure for stable and reliable locking: The gear-shaped limiting plate and the circular array of limiting grooves on the inner surface of the roller precisely match the axial movement of the movable rod. When the movable rod is inserted into the limiting groove, the roller is limited, effectively preventing the roller from rotating. The braking stability is significantly better than that of traditional friction brakes, making it especially suitable for inclined roads or emergency braking scenarios.

[0024] 3. Automatic reset of elastic components for high efficiency: The elastic component (spring) inside the movable slot automatically drives the movable rod to reset when the traction line is released, restoring the locked state to the roller. This design eliminates the need for manual reset, enabling a single-step operation of "pulling the line to move - releasing the line to brake," with a fast response speed, suitable for scenarios requiring rapid switching between braking / movement states (such as frequent starts and stops during loading and unloading).

[0025] 4. Optimized transmission mechanism for effortless and smooth operation: The combined design of the brake plate and the feed plate converts the tension of the traction cable into the rotation of the brake plate, which in turn pushes the movable rod to slide via the feed plate. This lever-type transmission structure amplifies the operating force and reduces the pulling force required at the handle, making it especially suitable for female or weaker operators. It also reduces wear on the traction cable and extends its service life.

[0026] 5. Protective design, convenient maintenance and durability: The open protective cover at the bottom of the brake groove is fixed by a snap-fit ​​mechanism (first and second clips), which not only prevents foreign objects from entering the brake groove and interfering with the movement of the traction line or brake plate, but also facilitates quick disassembly and maintenance. This design solves the problem of difficult maintenance of traditional enclosed structures, reduces equipment maintenance costs, and improves overall reliability. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a roller brake structure according to the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the limiting plate of this utility model;

[0029] Figure 3 This is a structural schematic diagram of the cross-sectional view of the connecting frame of this utility model;

[0030] Figure 4 This utility model Figure 3 A schematic diagram of the structure at point A in the middle.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100. Connecting plate;

[0033] 200. Connecting frame; 201. Rotating rod; 202. Roller; 203. Limiting plate; 204. Limiting groove;

[0034] 300. Movable groove; 301. Movable rod; 302. Elastic element; 303. Braking groove; 304. Braking plate; 305. Material feeding plate; 306. Clearance groove; 307. Traction line;

[0035] 400, traction line; 401, first locking block; 402, second locking block. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0037] Example 1:

[0038] This embodiment provides a roller 202 braking structure, such as Figure 1-4As shown: A connecting frame 200 connected to a transfer device is included. The connecting frame 200 has a rotating rod 201 that rotates laterally. The middle of the rotating rod 201 is connected to the connecting frame 200. One or both ends of the rotating rod 201 are provided with rollers 202. A gear-shaped limiting plate 203 is coaxially provided on the side of the rollers 202 near the rotating rod 201. Multiple limiting grooves 204 arranged in a ring are formed on the limiting plate 203. The rotating rod 201 and the rollers 202 can rotate together. The connecting frame 200... A movable groove 300 is also provided horizontally through the top of the rotating rod 201. The movable groove 300 is located directly above the rotating rod 201. A movable rod 301 is slidably mounted inside the movable groove 300. The movable rod 301 can move towards the axis of the roller 202 or slide towards the outer circumference of the roller 202 within the movable groove 300. Furthermore, an elastic element 302 is provided on the top wall of the movable groove 300. The bottom of the elastic element 302 is connected to the top of the movable rod 301. That is, the elastic element 302 can not only support the movable rod 301, but also... 1. It provides support and can always push the movable rod 301 towards the axis of the roller 202, so that the end of the movable rod 301 can be embedded in the limiting groove 204 on the limiting plate 203, thus forming a locking effect on the roller 202. Corresponding to the movable rod 301, a traction line 307 is also provided. One end of the traction line 307 is directly or indirectly connected to the movable rod 301, and the other end of the traction line 307 is located at the handle of the transfer device. Pulling the traction line 307 towards the handle will pull the movable rod 301 closer to the outer axis of the roller 202, so that the end of the movable rod 301 can disengage from the limiting groove 204, and then the roller 202 can rotate normally to make the transfer device run. When the force applied to the traction line 307 is released, the elastic element 302 can drive the movable rod 301 to reset, and the end of the movable rod 301 can be inserted into the limiting groove 204, thus making the roller 202 locked again.

[0039] Preferably, the cam structure that matches the end of the movable rod 301 with the end of the limiting rod can increase the stability of the roller 202 when it is in the locked state. The elastic element 302 is made of a spring, which can be used to push the movable rod 301 to reset. A telescopic rod can also be added inside the spring. The telescopic rod can not only provide stable support for the movable rod 301, but also prevent the spring from bending during the extension and retraction process.

[0040] Specifically, the connecting frame 200 is provided with a braking groove 303, such as Figure 3 , 4As shown: The top of the brake groove 303 is connected to the bottom of the movable groove 300. A brake plate 304 is rotatably installed inside the brake groove 303. The brake plate 304 is rotatably installed on the outer circumferential surface of the rotating rod 201 in a ring structure. A material-pulling plate 305 is also provided on the outer circumferential surface of the brake plate 304. The end of the material-pulling plate 305 is located in the movable groove 300. When the brake plate 304 rotates, it can drive the material-pulling plate 305 to rotate. The rotation of the material-pulling plate 305 can abut against the bottom surface of the movable plate, causing the movable plate to move towards the outer circumferential surface of the roller 202. Thus, the end of the movable rod 301 can disengage from the limiting groove 204, thereby locking the roller 202. When the force applied to the traction line 307 is released, the elastic element 302 can push the movable rod 301 to reset. During the reset process, the movable rod 301 can abut against the material-pulling plate 305, causing the material-pulling plate 305 and the brake plate 304 to reset.

[0041] Preferably, the connecting bracket 200 is also provided with a vertically penetrating relief groove 306, such as... Figure 3 As shown: The traction line 307 can slide within the relief groove 306, that is, the relief groove 306 can limit the traction line 307, thereby preventing the traction line 307 from being scraped by other materials or structures during the operation of the transfer device.

[0042] Furthermore, the bottom surface of the brake groove 303 is connected to the bottom of the connecting frame 200, thereby facilitating the maintenance of the transmission structure between the traction line 307 and the movable plate.

[0043] Furthermore, a protective cover 400 is provided corresponding to the brake groove 303. The protective cover 400 is detachably connected to the bottom of the connecting bracket 200, such as... Figure 4 As shown: The protective cover 400 has an arc-shaped structure, and there is a gap between the protective cover 400 and the support frame. The traction line 307 can slide in the gap. The end of the protective cover 400 away from the gap is also provided with a first locking block 401. Corresponding to the first locking block 401, a second locking block 402 is also provided at the bottom of the support frame. The first locking block 401 and the second locking block 402 can be fitted together, and the protective cover 400 can be quickly disassembled and assembled, thereby increasing maintenance efficiency.

[0044] The corresponding connecting frame 200 is provided with a connecting plate 100, which is fixedly connected to the transfer device. The connecting frame 200 is fixed to the bottom of the connecting plate 100 by a bearing. That is, the connecting frame 200, the connecting plate 100, and the roller 202 can form a universal wheel structure. The positioning groove 306 is provided through the inner ring of the bearing between the connecting frame 200 and the connecting plate 100, so that the traction line 307 can still brake the roller 202 normally after the roller 202 rotates.

[0045] Example 2:

[0046] The roller 202 near the rotating rod 201 is also provided with a toothed ring structure limiting plate 203. The teeth are set in the inner ring of the limiting plate 203, and the inner ring of the limiting plate 203 forms a plurality of ring-arranged limiting grooves 204. The support frame is also provided with a transversely penetrating movable groove 300. The movable groove 300 is located between the inner ring of the limiting plate 203 and the outer surface of the rotating rod 201. The movable rod 301 is slidably arranged in the movable groove 300. An elastic element 302 is also provided on the top wall of the movable groove 300. The other end of the elastic element 302 is connected to the bottom of the movable rod 301, that is, the elastic element 302 can... The movable rod 301 is always pushed towards the axis of the roller 202, and a traction element is provided corresponding to the movable rod 301. Thus, pulling the traction line 307 towards the handle can indirectly pull the movable rod 301 towards the outer circumference of the roller 202. The end of the movable rod 301 can be embedded in the limiting groove 204, thereby locking the roller 202. When the force on the traction line 307 is released, the elastic element 302 can reset the movable rod 301, and the end of the movable rod 301 can slide out from the limiting groove 204, thereby allowing the roller 202 to rotate normally.

[0047] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A roller brake structure, comprising a connecting frame (200) and a rotating rod (201) rotatably mounted on the connecting frame (200), wherein a roller (202) is provided at the end of the rotating rod (201), characterized in that: Also includes; The movable groove (300) is horizontally arranged on the connecting frame (200); The movable rod (301) is slidably disposed in the movable groove (300). The movable rod (301) is locked to move toward the axis of the roller (202) or to slide toward the outer wall of the roller (202) to form a locking effect. The traction line (307) has one end located at the handle of the transfer device and the other end located inside the connecting frame (200) and directly or through transmission connected to the movable rod (301). Pulling the traction line (307) can drive the movable rod (301) to slide. The elastic element (302) is located in the movable groove (300) and connected to the movable rod (301). By removing the traction line (307), the elastic element (302) can drive the movable rod (301) to reset.

2. The roller (202) brake structure as described in claim 1, characterized in that: The inner surface of the roller (202) is provided with a gear-shaped limiting plate (203), and multiple limiting grooves (204) are formed on the limiting plate (203). The multiple limiting grooves (204) are arranged in a circular array. When the movable rod (301) moves toward the axis of the roller (202), it can lock the roller (202).

3. The roller (202) brake structure as described in claim 2, characterized in that: The elastic element (302) is a spring, with one end of the spring connected to the top of the movable rod (301) and the other end of the spring connected to the top wall of the movable groove (300).

4. The roller (202) brake structure as described in claim 2, characterized in that: The connecting frame is also provided with a brake groove (303), which is connected to the bottom of the movable groove (300). A brake plate (304) is rotatably provided in the brake groove (303). The brake plate (304) rotates along the axis of the rotating rod (201). A material-pulling plate (305) is provided on the outer wall of the brake plate (304). The rotation of the brake plate (304) can cause the material-pulling plate (305) to slide the movable plate in the movable groove (300). The traction line (307) is connected to the outer wall of the material-pulling plate (305).

5. The roller (202) brake structure as described in claim 4, characterized in that: The connecting frame is provided with a relief groove (306) through it, and the traction line (307) can slide in the relief groove (306).

6. The roller (202) brake structure as described in claim 4, characterized in that: The bottom of the brake groove (303) is connected to the bottom of the connecting frame.

7. The roller (202) brake structure as described in claim 6, characterized in that: The corresponding brake groove (303) is also provided with a protective cover (400), which is detachably connected to the bottom of the connecting frame.

8. The roller (202) brake structure as described in claim 7, characterized in that: The protective cover (400) has a first locking block (401) on its top, and a second locking block (402) is provided at the bottom of the connecting frame corresponding to the first locking block (401). The first locking block (401) and the second locking block (402) are connected together in a snap-fit ​​manner.

9. The roller (202) brake structure as described in claim 1, characterized in that: The corresponding connecting frame is provided with a connecting plate (100), the connecting plate (100) is fixedly connected to the transfer device, and the connecting frame is fixed to the bottom of the connecting plate (100) by bearings.

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