A wedge brake device for a crane
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA MECHANICAL & ELECTRICAL (NANTONG) CO LTD
- Filing Date
- 2025-08-19
- Publication Date
- 2026-08-07
AI Technical Summary
[0003]但是楔形制动块是依靠摩擦进行制动的，导致楔形制动块在制动后，因为摩擦会产生一定的磨损，从而会降低楔形制动块与传动部件的摩擦力，导致楔形制动块的制动效果降低，比较不便，为此，我们提出一种用于起重机的楔形制动装置
[0011]采用上述技术方案，通过电机、第一转轮和传动带的配合，使得两侧的第二转轮可以带动螺杆进行旋转，然后通过第一移动块和第二移动块的配合，可以驱使第一滑板和第二滑板同步滑动，同时通过第一滑块和滑箱可以带动楔形制动块一起滑动，使用于起重机的楔形制动装置可以在楔形制动块磨损后，根据楔形制动块的磨损程度对楔形制动块的位置进行调节，使楔形制动块的制动能力不会产生变化；
Smart Images
Figure CN224606903U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crane braking technology, specifically a wedge-shaped braking device for cranes. Background Technology
[0002] Wedge brakes are a common braking system used in cranes. Their main function is to stop the rotation of transmission components (such as wheels or drums) quickly through friction when the crane stops or brakes in an emergency, preventing the load from moving due to gravity or inertia and ensuring operational safety.
[0003] However, wedge brake blocks rely on friction for braking, which causes wear after braking. This reduces the friction between the wedge brake block and the transmission components, resulting in a decrease in braking effectiveness and inconvenience. Therefore, we propose a wedge brake device for cranes. Utility Model Content
[0004] The purpose of this invention is to provide a wedge-shaped braking device for cranes.
[0005] To address the problems mentioned in the background art, this utility model provides the following technical solution: a wedge-shaped braking device for a crane, comprising a brake box, a control panel at the upper end of the brake box, a motor on one side of the brake box, a first rotating wheel mounted on one side of the motor, a mounting plate fixed to the other side of the brake box, fixing plates fixed at both ends of the mounting plate, a screw threaded through one side of each fixing plate, a second rotating wheel fixed to one side of each screw, a transmission belt on the inner side of the first rotating wheel, a first moving block and a second moving block respectively on both sides of the screw, a first sliding plate fixed to one end of the first moving block, a second sliding plate fixed to one end of the second moving block, multiple sets of sliding boxes fixed to one side of the second sliding plate, a first slider installed inside each sliding box, and a wedge-shaped brake block fixed to one end of the first slider.
[0006] Preferably, the screw passes through the first moving block and the second moving block, and the first sliding plate is located inside the brake box.
[0007] Preferably, the first rotating wheel is rotatably connected to the second rotating wheels on both sides via a transmission belt, and the sliding box is slidably connected to the first slider.
[0008] Preferably, an electromagnet is provided at the upper end of one side of the brake box, an mounting block is fixed to one side of the wedge-shaped brake block, bolts are provided through both sides of the upper end of the mounting block, multiple sets of first springs are provided near the center of one side of the second slide plate, and connecting plates are fixed at both ends near the center of the other side of the wedge-shaped brake block, a second slider is fixed to one side of the connecting plate, and multiple sets of second springs are fixed to one side of the second slider.
[0009] Preferably, the mounting block passes through the first slider and is slidably connected to the first slider, and the connecting plate passes through the second slide plate and the brake box, and is slidably connected to both the second slide plate and the brake box.
[0010] Preferably, there are two first springs, which are located between the wedge-shaped brake block and the second slide plate, and four second springs, which are located inside the brake box.
[0011] By adopting the above technical solution, the cooperation of the motor, the first rotating wheel and the transmission belt enables the second rotating wheels on both sides to drive the screw to rotate. Then, through the cooperation of the first moving block and the second moving block, the first sliding plate and the second sliding plate can be driven to slide synchronously. At the same time, the first sliding block and the sliding box can drive the wedge brake block to slide together. The wedge brake device used in cranes can adjust the position of the wedge brake block according to the degree of wear after the wedge brake block is worn, so that the braking capacity of the wedge brake block does not change.
[0012] By employing the above technical solution, the wedge-shaped brake block can be attracted by the electromagnet, allowing it to slide on the mounting plate. Then, with the assistance of the first spring, the wedge-shaped brake block can be pushed to contact the crane transmission component, thus braking the crane transmission component. Furthermore, the cooperation of the second spring, the second slider, and the connecting plate accelerates the sliding of the wedge-shaped brake block and strengthens the friction between the wedge-shaped brake block and the crane transmission component. The wedge-shaped braking device used on cranes can push the wedge-shaped brake block multiple times, improving the braking effect of the wedge-shaped brake block on the crane transmission component. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure in an embodiment of the present utility model;
[0014] Figure 2 This is a cross-sectional view of an embodiment of the present utility model;
[0015] Figure 3 This is a schematic diagram of the internal structure of the brake box in an embodiment of this utility model;
[0016] Figure 4This is a schematic diagram of the connection structure between the motor and the second sliding plate in an embodiment of this utility model.
[0017] In the diagram: 1. Brake box; 2. Control panel; 3. Motor; 4. First rotating wheel; 5. Mounting plate; 6. Fixing plate; 7. Screw; 8. Second rotating wheel; 9. Transmission belt; 10. First moving block; 11. First sliding plate; 12. Second moving block; 13. Second sliding plate; 14. Electromagnet; 15. Sliding box; 16. First slider; 17. Wedge brake block; 18. Mounting block; 19. Bolt; 20. First spring; 21. Connecting plate; 22. Second slider; 23. Second spring. Detailed Implementation
[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0019] Example 1:
[0020] Please see Figure 1-4 This utility model provides a technical solution: a wedge-shaped braking device for a crane, including a brake box 1, a control panel 2 at the upper end of the brake box 1, a motor 3 on one side of the brake box 1, a first rotating wheel 4 mounted on one side of the motor 3, a mounting plate 5 fixed on the other side of the brake box 1, fixing plates 6 fixed at both ends of the mounting plate 5, a screw 7 penetrating one side of each fixing plate 6, a second rotating wheel 8 fixed on one side of each screw 7, a transmission belt 9 inside the first rotating wheel 4, and first moving blocks 10 and... The second moving block 12 has a first sliding plate 11 fixed to one end of the first moving block 10, and a second sliding plate 13 fixed to one end of the second moving block 12. Multiple sets of sliding boxes 15 are fixed to one side of the second sliding plate 13. A first slider 16 is installed inside each sliding box 15. A wedge-shaped brake block 17 is fixed to one end of the first slider 16. The screw 7 passes through the first moving block 10 and the second moving block 12. The first sliding plate 11 is located inside the brake box 1. The first rotating wheel 4 is rotatably connected to the second rotating wheels 8 on both sides through the transmission belt 9. The sliding box 15 is slidably connected to the first slider 16.
[0021] Specifically, when the wedge brake block 17 brakes the crane, it wears down. Then, the motor 3 is started to rotate forward via the control panel 2, causing the motor 3 to drive the transmission belt 9 to rotate. At this time, the transmission belt 9 drives the second rotating wheels 8 on both sides to rotate together, causing the second rotating wheels 8 to drive the screw 7 to rotate in the fixed plate 6. This causes the first moving blocks 10 and the second moving blocks 12 on both sides to drive the first sliding plate 11 and the second sliding plate 13 to slide to one side, respectively. When the second sliding plate 13 slides, it pushes the wedge brake block 17 to move together through the sliding box 15 and the first sliding block 16. At the same time, because of the synchronous movement of the first sliding plate 11 and the second sliding plate 13, the elasticity of the first spring 20 and the second spring 23 on the wedge brake block 17 remains unchanged. Then, according to the wear condition of the wedge brake block 17, it is moved to the required position and then stops, so that the wedge brake block 17 returns to its original braking effect. The wedge brake device used on cranes can adjust the position of the wedge brake block 17 according to the wear degree of the wedge brake block 17 after it wears down, so that the braking capacity of the wedge brake block 17 does not change.
[0022] Example 2:
[0023] Please see Figure 1-4 This utility model provides a technical solution: a wedge-shaped braking device for a crane, wherein an electromagnet 14 is provided at the upper end of one side of the brake box 1, an mounting block 18 is fixed to one side of the wedge-shaped brake block 17, and bolts 19 are provided through both sides of the upper end of the mounting block 18, multiple sets of first springs 20 are provided near the center of one side of the second slide plate 13, and connecting plates 21 are fixed at both ends near the center of the other side of the wedge-shaped brake block 17, a second slider 22 is fixed to one side of the connecting plate 21, and multiple sets of second springs 23 are fixed to one side of the second slider 22; the mounting block 18 passes through the first slider 16 and is slidably connected to the first slider 16, the connecting plate 21 passes through the second slide plate 13 and the brake box 1, and is slidably connected to both the second slide plate 13 and the brake box 1; there are two first springs 20 located between the wedge-shaped brake block 17 and the second slide plate 13, and there are four second springs 23 located inside the brake box 1.
[0024] Specifically, when the crane stops or brakes suddenly, the electromagnet 14 is turned off via the control panel 2, causing the electromagnet 14 to lose its attraction to the wedge-shaped brake block 17. At this time, the wedge-shaped brake block 17 will move to one side under the elasticity of the first spring 20. Simultaneously, the wedge-shaped brake block 17 will pull the first slider 16 to slide in the slide box 15, thereby causing the wedge-shaped brake block 17 to contact the transmission components of the crane and generate friction. At the same time, the second spring 23 inside the brake box 1 will push the second slider 22 to slide, causing the second slider 22 to press the wedge-shaped brake block 17 again through the connecting plate 21, accelerating the sliding of the wedge-shaped brake block 17 and causing the wedge-shaped brake block 17 to contact the transmission components of the crane. Increased friction between the crane's transmission components causes the wedge brake block 17 to slide to the other side, thus canceling the braking. When the wedge brake block 17 needs to be replaced, loosen and remove the bolt 19, then pull the wedge brake block 17 to pull out the mounting block 18. Then replace the wedge brake block 17 and the mounting block 18. After replacement, put the wedge brake block 17 and the mounting block 18 back in their original positions, insert the bolt 19, and tighten it. The wedge brake device used on cranes can push the wedge brake block 17 multiple times, improving the braking effect of the wedge brake block 17 on the crane's transmission components.
[0025] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.
Claims
1. A wedge-shaped braking device for a crane, comprising a brake box (1), characterized in that: A control panel (2) is provided at the upper end of the brake box (1). A motor (3) is provided on one side of the brake box (1). A first rotating wheel (4) is installed on one side of the motor (3). A mounting plate (5) is fixed on the other side of the brake box (1). Fixing plates (6) are fixed at both ends of the mounting plate (5). A screw (7) is provided through one side of each fixing plate (6). A second rotating wheel (8) is fixed on one side of each screw (7). A transmission is provided on the inner side of the first rotating wheel (4). The moving belt (9) has a first moving block (10) and a second moving block (12) respectively on both sides of the screw (7). One end of the first moving block (10) is fixed with a first sliding plate (11), and one end of the second moving block (12) is fixed with a second sliding plate (13). Multiple sets of sliding boxes (15) are fixed on one side of the second sliding plate (13). A first slider (16) is installed inside each of the sliding boxes (15). One end of the first slider (16) is fixed with a wedge-shaped brake block (17).
2. A wedge-shaped braking device for a crane according to claim 1, characterized in that: The screw (7) passes through the first moving block (10) and the second moving block (12), and the first sliding plate (11) is located inside the brake box (1).
3. A wedge-shaped braking device for a crane according to claim 1, characterized in that: The first rotating wheel (4) is rotatably connected to the second rotating wheels (8) on both sides via a transmission belt (9), and the sliding box (15) is slidably connected to the first slider (16).
4. A wedge-shaped braking device for a crane according to claim 2, characterized in that: An electromagnet (14) is provided on the upper end of one side of the brake box (1), and an mounting block (18) is fixed on one side of the wedge brake block (17). Bolts (19) are provided through both sides of the upper end of the mounting block (18). Multiple sets of first springs (20) are provided near the center on one side of the second slide plate (13). Connecting plates (21) are fixed at both ends near the center on the other side of the wedge brake block (17). A second slider (22) is fixed on one side of the connecting plate (21), and multiple sets of second springs (23) are fixed on one side of the second slider (22).
5. A wedge-shaped braking device for a crane according to claim 4, characterized in that: The mounting block (18) passes through the first slider (16) and is slidably connected to the first slider (16). The connecting plate (21) passes through the second slide plate (13) and the brake box (1) and is slidably connected to both the second slide plate (13) and the brake box (1).
6. A wedge-shaped braking device for a crane according to claim 4, characterized in that: There are two first springs (20), and the first springs (20) are located between the wedge brake block (17) and the second slide plate (13). There are four second springs (23), and the second springs (23) are located inside the brake box (1).