Lifting winch braking structure with locking and positioning functions

Abstract

The utility model relates to the technical field of winch braking, in particular to a hoisting winch braking structure with locking and positioning functions, which comprises a brake disc in coaxial key connection with the right end of a winding drum, toothed rings are coaxially fixed on the left wall and the right wall of the brake disc, and toothed grooves are formed in the outer walls of the circumferences of the toothed rings; the device adopts a double braking mode that the tooth blocks are meshed with the tooth grooves and the brake shoes clamp the outer wall of the circumference of the brake disc. When the winch brakes, the brake shoe is tightly attached to the outer wall of the brake disc under the synergistic effect of abutting of the spring and the jacking mechanism, and the rotational inertia of the winch is consumed by means of strong friction force; the tooth block is rapidly embedded into the tooth groove of the tooth ring to form mechanical limiting, and the rotating component is locked from the structural level. The two braking modes complement each other, the braking effect is enhanced, the braking duration caused by large rotational inertia is effectively shortened, the winch can be more accurately controlled to complete locking braking at the preset position, and the operation safety and the positioning accuracy are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to winch brake technology field, concretely is the hoist winch brake structure with locking positioning function. BACKGROUND

[0002] The hoist winch is the key equipment of material lifting or flat tow, and is widely used in the fields such as construction, mine, wharf etc. It realizes heavy lifting or traction through the winding of steel wire rope or chain. The hoist winch is various, such as single double drum according to the number of drum, gear transmission and hydraulic transmission etc. according to transmission mode. Brake structure is the core of safe operation of hoist winch, and common disc brake structure relies on brake pad and brake disc friction to consume kinetic energy, realizes braking or deceleration, and guarantees the stable start and stop of hoist winch.

[0003] The utility model discloses a kind of winch hydraulic brake systems, the winch hydraulic brake system includes winch seat, two installation supports are installed on the winch seat, same winch shaft is rotatably installed on two installation supports, one end of a winch shaft extends to one installation support outside, L-shaped support is fixedly installed on one side of one installation support, U-shaped mounting bracket is fixedly installed on the bottom side of L-shaped support, the winch hydraulic brake system, when braking, start hydraulic cylinder, can drive push rod and connecting plate to move, connecting plate moves and drives two pull columns to move, pull column can move in pull hole, with constantly moving upwards, can drive a group of first pull rod and second pull rod to swing, first pull rod and second pull rod are rotatably connected with first arc-shaped brake plate and second arc-shaped brake plate, after swinging, can drive winch to brake, brake from both sides, and braking effect is better.

[0004] Although the winch hydraulic brake system can brake winch shaft, the device still has the following problems in actual use: when the winch brakes, the large overall moment of inertia makes the brake pad difficult to quickly take effect, prolongs the braking time, so that it cannot be accurately parked at the predetermined position. When emergency occurs, this brake delay problem will be amplified, and it is difficult to brake in time, which not only affects work efficiency, but also brings safety hazards. In view of this, we propose the hoist winch brake structure with locking positioning function. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing hoist winch brake structure with locking positioning function to solve the problem of long braking time of brake pad and difficult to meet the demand of rapid braking in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] The hoist winch brake structure with locking positioning function comprises:

[0008] The base has two ear plates fixed to the top, and a drum is rotatably installed between the two ear plates. Two limit plates are coaxially fixed to the outer wall of the drum.

[0009] A braking unit is installed at the right end of the base and is used for drum braking; it includes a brake disc coaxially keyed to the right end of the drum, and toothed rings are coaxially fixed on both the left and right walls of the brake disc, with toothed grooves opened on the outer circumference of the toothed rings.

[0010] Below the brake disc is a liftable connecting plate. The top of the connecting plate is fixed with two symmetrical support plates, and the bottom of the support plate is fixed with toothed blocks that mesh with corresponding toothed grooves.

[0011] A brake shoe is provided between the two support plates to clamp the outer circumference of the brake disc and brake the brake disc. Two guide rods are fixed at the bottom of the brake shoe. The guide rods pass through the connecting plate and are slidably connected to the connecting plate. A spring is sleeved on the outside of the guide rod to press against the brake shoe.

[0012] A lifting mechanism is provided below the connecting plate.

[0013] Preferably, a guide rail is fixedly connected to the top right end of the base by bolts, and the cross-sectional shape of the guide rail is trapezoidal.

[0014] In this configuration, the guide rail provides precise guidance for the horizontal movement of the connector;

[0015] Preferably, the lifting mechanism includes two symmetrical and inclined support blocks, with hinge seats hinged at both the upper and lower ends of the support blocks. The connecting plate is detachably connected to the upper hinge seat. A horizontally movable connecting seat is fixed at the bottom end of the lower hinge seat. An electric cylinder is provided on one side of the connecting seat, and the end of the piston rod of the electric cylinder is fixedly connected to the connecting seat.

[0016] Preferably, the bottom of the connecting seat is provided with a guide groove that slides with the guide rail, and the cross-sectional shape of the guide groove is trapezoidal.

[0017] In these two configurations, the electric cylinder drives the connecting seat to move horizontally, and the connecting plate is raised and lowered through the transmission of the support block and the hinge. This dual-side drive design effectively distributes the force and avoids tilting or jamming caused by unilateral force application, which can ensure the precise movement trajectory of components such as the support plate and toothed block.

[0018] Preferably, the connecting plate and the support plate are integrally formed structures, and both the connecting plate and the support plate are made of alloy steel.

[0019] In this design, the one-piece molding enhances the structural strength and rigidity of the connecting plate and the support plate.

[0020] Preferably, the top of the brake pad is arc-shaped, and the top of the brake pad fits against the outer circumferential wall of the brake disc; the brake pad is a ceramic brake pad.

[0021] In this design, the arc shape allows it to fit more closely to the outer circumference of the brake disc, increasing the contact area and improving the friction braking effect on the brake disc.

[0022] Preferably, the brake disc is provided with a protective cover, the right end face of the protective cover is open, and a cover plate is fixedly connected to the right end of the protective cover by bolts.

[0023] In this setup, the protective cover and plate effectively protect the internal braking structure.

[0024] Preferably, both ends of the connecting plate are threaded with connecting bolts, and the top of the upper hinge seat is provided with a threaded hole, and the connecting bolts are threadedly connected to the threaded hole.

[0025] This design facilitates the installation, disassembly, and replacement of components of the lifting mechanism, offering the advantage of convenient maintenance.

[0026] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0027] 1. This device employs a dual braking method: the engagement of toothed blocks and tooth grooves, and the clamping of brake shoes against the outer circumference of the brake disc. When the winch brakes, the brake shoes, under the combined action of spring pressure and the lifting mechanism, tightly adhere to the outer wall of the brake disc, using strong friction to dissipate the winch's rotational inertia. Simultaneously, the toothed blocks quickly engage in the tooth grooves of the toothed ring, forming a mechanical limit and structurally locking the rotating components. These two braking methods complement each other, not only enhancing the braking effect and effectively shortening the braking time caused by large rotational inertia, but also precisely controlling the winch to complete locking braking at a predetermined position, significantly improving operational safety and positioning accuracy.

[0028] 2. The lifting mechanism is driven by electric cylinders on both sides. The piston rods push the connecting seat to slide horizontally along the guide rail. This, combined with the hinged support block and hinge seat, enables the connecting plate to rise and fall smoothly. This dual-side drive design effectively distributes the force, avoiding tilting or jamming caused by unilateral force application. It ensures precise movement trajectories of components such as the support plate and gear blocks, making the contact between the brake shoes and brake disc, and the meshing process between the gear blocks and the tooth grooves stable and reliable, significantly improving the stability and reliability of the entire braking structure during operation. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the base structure in this utility model;

[0031] Figure 3 This is a partial structural side view of the present invention;

[0032] Figure 4 This is a schematic diagram of the braking part in this utility model;

[0033] Figure 5 This is a side view of the braking part in this utility model;

[0034] Figure 6 This is a partial structural diagram of the braking part in this utility model;

[0035] In the picture:

[0036] 1. Base; 10. Guide rail; 11. Ear plate; 12. Drum; 13. Limiting plate;

[0037] 2. Braking unit; 20. Protective cover; 21. Cover plate; 22. Brake disc; 23. Gear ring; 24. Connecting plate; 240. Connecting bolt; 25. Support plate; 250. Gear block; 251. Reinforcing block; 26. Brake shoe; 260. Guide rod; 261. Spring; 262. Limiting ring; 27. Support block; 270. Hinge seat; 2700. Threaded hole; 28. Connecting seat; 280. Guide groove; 29. ​​Electric cylinder. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] This embodiment provides a technical solution:

[0040] Please see Figures 1-2 As shown, the hoisting winch braking structure with locking and positioning function includes a base 1, two ear plates 11 fixed on the top, a drum 12 rotatably installed between the two ear plates 11, and two limiting plates 13 coaxially fixed on the outer wall of the drum 12.

[0041] With the above configuration, the base 1 serves as a basic support component, providing a stable installation platform for the entire hoisting winch braking structure. The ear plate 11 is fixed to the top of the base 1, enabling the rotational installation of the drum 12 and ensuring the smooth operation of the winch's core working components. The limiting plate 13 on the outer wall of the drum 12 effectively restricts the winding range of the wire rope, preventing it from coming loose and improving the safety and reliability of the winch operation.

[0042] In this embodiment, a guide rail 10 is fixedly connected to the top right end of the base 1 by bolts. The guide rail 10 has a trapezoidal cross-sectional shape. The guide rail 10 at the top right end of the base 1 adopts a trapezoidal cross-section design, which cooperates with the trapezoidal guide groove 280 at the bottom of the connecting seat 28 to provide precise guidance for the horizontal movement of the connecting seat 28.

[0043] Please see Figures 1-6 As shown, the braking unit 2 is installed at the right end of the base 1 and is used for braking the drum 12. It includes a brake disc 22 coaxially keyed to the right end of the drum 12. Gear rings 23 are coaxially fixed on both the left and right walls of the brake disc 22, and the outer circumferential wall of the gear rings 23 is provided with tooth grooves. A liftable connecting plate 24 is provided below the brake disc 22. Two symmetrical support plates 25 are fixed on the top of the connecting plate 24, and tooth blocks 250 are fixed on the bottom of the support plates 25. The tooth blocks 250 mesh with the corresponding tooth grooves. A brake shoe 26 is provided between the two support plates 25 to clamp the outer circumferential wall of the brake disc 22 to brake the brake disc 22. Two guide rods 260 are fixed on the bottom of the brake shoe 26. The guide rods 260 are fixed to the brake shoe 26 by bolts. The guide rods 260 pass through the connecting plate 24 and slide with the connecting plate 24. The system features a dynamic connection, with a spring 261 fitted around the guide rod 260 to press against the brake shoe 26. A lifting mechanism is located below the connecting plate 24. This mechanism includes two symmetrical and inclined support blocks 27, each hinged to a hinge seat 270 at both ends. The connecting plate 24 is detachably connected to the upper hinge seat 270. A horizontally movable connecting seat 28 is fixed to the bottom of the lower hinge seat 270, which is welded to the connecting seat 28 to ensure connection strength. An electric cylinder 29 is located on one side of each connecting seat 28. The cylinder body of the electric cylinder 29 is bolted to the outer walls of both sides of the protective cover 20, and the piston rod end of the electric cylinder 29 is fixedly connected to the connecting seat 28. The connecting seat 28 is also bolted to the piston rod end of the electric cylinder 29. This structure offers high transmission efficiency, precise control, and allows for flexible adjustment of the braking components' positions according to actual needs, facilitating braking and releasing operations and enhancing the automation level of the braking structure.

[0044] The above settings create a dual braking system, which not only enhances the braking effect and effectively shortens the braking time caused by the large moment of inertia, but also precisely controls the winch to complete the locking braking at the predetermined position, significantly improving operational safety and positioning accuracy.

[0045] Please see Figure 2 and Figure 6As shown, in this embodiment, the bottom of the connecting seat 28 is provided with a guide groove 280 that is slidably connected to the guide rail 10. The cross-sectional shape of the guide groove 280 is trapezoidal. The guide groove 280 at the bottom of the connecting seat 28 is slidably connected to the guide rail 10. The cooperation of the trapezoidal structures of the two not only ensures the smooth horizontal movement of the connecting seat 28, but also allows it to withstand a large lateral force. During braking, it effectively prevents the connecting seat 28 from shifting, ensuring the stable operation of the lifting mechanism, and thus ensuring the reliability of the entire braking structure.

[0046] In this embodiment, the connecting plate 24 and the support plate 25 are integrally formed structures, and both are made of alloy steel. The integral structure and alloy steel material enhance the structural strength and rigidity of the connecting plate 24 and the support plate 25. They are less prone to deformation when subjected to large forces during braking, ensuring the accuracy and stability of the meshing between the toothed block 250 and the toothed ring 23, while also extending the service life of the components and reducing maintenance costs. Furthermore, a reinforcing block 251 is tightly welded to the connection between the connecting plate 24 and the support plate 25, further increasing the reliability of the connection between them.

[0047] Please see Figure 5 As shown, in this embodiment, the top of the brake shoe 26 is arc-shaped, and the top of the brake shoe 26 fits against the outer circumferential wall of the brake disc 22. The brake shoe 26 is a ceramic brake pad. The arc-shaped design allows it to fit more tightly against the outer circumferential wall of the brake disc 22, increasing the contact area and improving the friction braking effect. The ceramic brake shoe 26 has good wear resistance and high temperature resistance, reducing wear and heat fade, extending its service life, and reducing braking noise, thus improving the comfort of winch operation.

[0048] Please see Figure 1 and Figure 2 As shown, in this embodiment, a protective cover 20 is provided on the outside of the brake disc 22. The right end face of the protective cover 20 is open, and a cover plate 21 is fixedly connected to the right end of the protective cover 20 by bolts. The protective cover 20 and the cover plate 21 can effectively prevent dust, debris, etc. from entering the braking components, avoiding wear on the brake disc 22, brake shoes 26, and other components or affecting braking performance. The removable cover plate 21 facilitates the inspection, maintenance, and replacement of the internal braking components, improving the maintainability of the equipment.

[0049] Please see Figure 5As shown, in this embodiment, connecting bolts 240 are threaded to both ends of the connecting plate 24, and a threaded hole 2700 is provided on the top of the upper hinge seat 270, with the connecting bolts 240 threaded into the threaded hole 2700. This connection method facilitates the installation, disassembly, and replacement of components of the lifting mechanism. In case of equipment maintenance or component damage, repair operations can be performed quickly, improving equipment maintenance efficiency and reducing downtime and maintenance costs.

[0050] Please see Figure 5 As shown, in this embodiment, each guide rod 260 is coaxially keyed to a limiting ring 262 at its bottom end. The outer diameter of the limiting ring 262 is larger than the diameter of the guide rod 260. The limiting ring 262 effectively prevents the guide rod 260 from detaching from the connecting plate 24, ensuring the normal operation of the braking assembly composed of the brake shoe 26, guide rod 260, and spring 261. During braking, it ensures the stability of the brake shoe 26's movement, improving the safety and reliability of the braking structure.

[0051] In this embodiment, the brake disc 22 and the gear ring 23 are integrally formed, and the tooth grooves on the outer wall of the gear ring 23 are formed by gear hobbing. The integrally formed structure reduces the connection links between the brake disc 22 and the gear ring 23, improving the overall structural strength and transmission efficiency. The gear grooves on the outer wall of the gear ring 23 are formed by gear hobbing, resulting in high tooth profile precision and tight meshing with the tooth block 250, enhancing the stability and reliability of mechanical braking and helping to achieve precise braking and positioning of the winch.

[0052] It is worth noting that the electric cylinder 29 involved in this embodiment is a conventional technology and will not be described in detail here.

[0053] When braking is required, the electric cylinder 29 receives a control signal, and its piston rod extends, pushing the connecting seat 28 to slide horizontally along the trapezoidal guide rail 10 at the top right end of the base 1. As the connecting seat 28 moves, it causes the lower hinge seat 270 to shift horizontally, thereby pushing the inclined support block 27 to rotate around the hinge point. During the rotation of the support block 27, the upper hinge seat 270 moves upward. Since the connecting plate 24 is connected to the threaded hole 2700 of the upper hinge seat 270 via connecting bolts 240, the connecting plate 24 rises smoothly. During the rise of the connecting plate 24, its top support plate 25 moves upward synchronously, causing the bottom toothed block 250 to gradually approach the toothed ring 23 on the side wall of the brake disc 22. Simultaneously, the brake shoe 26 fixed to the connecting plate 24 moves synchronously. When the arc-shaped top of the brake shoe 26 contacts the outer circumference of the brake disc 22, under the continuous upward force, the brake shoe 26 experiences a counterforce from the brake disc 22, causing the guide rod 260 to slide downward along the connecting plate 24, compressing the spring 261 sleeved outside the guide rod 260, making the brake shoe 26 fit more tightly against the brake disc 22 and increasing friction. During this process, the continuous upward movement of the connecting plate 24 pushes the toothed block 250 at the bottom of the support plate 25 to precisely engage in the tooth groove of the toothed ring 23. The dual action of mechanical limiting and friction braking achieves rapid and effective braking of the drum 12.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A hoisting winch braking structure with locking and positioning function, characterized in that, include: The base (1) has two ear plates (11) fixed on the top, and a drum (12) is rotatably installed between the two ear plates (11). Two limiting plates (13) are coaxially fixed on the outer wall of the drum (12). Braking unit (2) is installed at the right end of base (1) and is used for braking drum (12); Includes a brake disc (22) coaxially connected to the right end of the drum (12), and toothed rings (23) are coaxially fixed on both the left and right walls of the brake disc (22), with toothed grooves on the outer circumference of the toothed rings (23). Below the brake disc (22) is a liftable connecting plate (24). The top of the connecting plate (24) is fixed with two symmetrical support plates (25). The bottom of the support plate (25) is fixed with a toothed block (250). The toothed block (250) meshes with the corresponding toothed groove. A brake shoe (26) is provided between the two support plates (25) to clamp the outer circumferential wall of the brake disc (22) and brake the brake disc (22). Two guide rods (260) are fixed at the bottom of the brake shoe (26). The guide rods (260) pass through the connecting plate (24) and are slidably connected to the connecting plate (24). A spring (261) is sleeved on the outside of the guide rods (260) to press against the brake shoe (26). A lifting mechanism is provided below the connecting plate (24).

2. The hoisting winch braking structure with locking and positioning function according to claim 1, characterized in that: The top right end of the base (1) is fixedly connected to a guide rail (10) by bolts. The cross-sectional shape of the guide rail (10) is trapezoidal.

3. The hoisting winch braking structure with locking and positioning function according to claim 1, characterized in that: The lifting mechanism includes two symmetrical and inclined support blocks (27). The upper and lower ends of the support blocks (27) are hinged with hinge seats (270). The connecting plate (24) is detachably connected to the upper hinge seat (270). The lower hinge seat (270) is fixed with a horizontally movable connecting seat (28) at the bottom end. An electric cylinder (29) is provided on one side of the connecting seat (28), and the piston rod end of the electric cylinder (29) is fixedly connected to the connecting seat (28).

4. The hoisting winch braking structure with locking and positioning function according to claim 3, characterized in that: The bottom of the connecting seat (28) is provided with a guide groove (280) that is slidably connected to the guide rail (10), and the cross-sectional shape of the guide groove (280) is trapezoidal.

5. The hoisting winch braking structure with locking and positioning function according to claim 1, characterized in that: The connecting plate (24) and the support plate (25) are integrally formed structures, and both the connecting plate (24) and the support plate (25) are made of alloy steel.

6. The hoisting winch braking structure with locking and positioning function according to claim 1, characterized in that: The top of the brake pad (26) is arc-shaped, and the top of the brake pad (26) fits against the outer circumference of the brake disc (22). The brake pad (26) is a ceramic brake pad.

7. The hoisting winch braking structure with locking and positioning function according to claim 1, characterized in that: The brake disc (22) is provided with a protective cover (20) on its outside. The right end face of the protective cover (20) is open. The right end of the protective cover (20) is fixedly connected to a cover plate (21) by bolts.

8. The hoisting winch braking structure with locking and positioning function according to claim 1, characterized in that: Both ends of the connecting plate (24) are threaded with connecting bolts (240), and the top of the hinge seat (270) located above is provided with a threaded hole (2700), and the connecting bolts (240) are threadedly connected to the threaded hole (2700).

Images