Automatic compensation mechanism for hydraulic brake

Abstract

The utility model belongs to the technical field of engineering machinery braking, and particularly relates to an automatic compensation mechanism for a hydraulic brake, which comprises a brake body shell, a spring shaft, a hydraulic piston component, a hollow bolt, a central pull rod, a spherical gasket, a brake shoe and a housing, a quick automatic compensation function is achieved through a multi-head thread at the lower end of the center pull rod, a ratchet wheel limiting mechanism achieves switching of an automatic compensation function and a reset function through a direction-adjustable limiting structure, and when a spherical gasket achieves automatic compensation and reset, angle deviation of a friction plate and a friction disc can be automatically compensated. The reliability of the brake is greatly improved, the service life of the brake is greatly prolonged, the equipment failure rate is reduced, the maintenance cost is reduced, the requirements of professional technicians can be reduced, the working efficiency is improved, in addition, accurate control over the brake is achieved, the control precision and the response speed are improved, and the high requirement of industrial automation for the brake is met.

Description

Technical Field

[0001] This utility model belongs to the field of engineering machinery braking technology, specifically relating to an automatic compensation mechanism for hydraulic brakes. Background Technology

[0002] Brakes are an indispensable part of mechanical equipment, and their main function is to decelerate or stop movement by applying braking torque. In brake design, an automatic compensation mechanism is a crucial component. It automatically compensates for the clearance after the brake friction pads wear, preventing brake failure caused by excessive clearance.

[0003] Existing technological solutions: Current automatic brake compensation mechanisms mainly employ multi-start threads, ratchet structures, or spring structures. Multi-start threads can quickly compensate for backlash by adjusting the number of thread turns, while ratchet structures allow for unidirectional rotation, thus achieving convenient limit and compensation functions. Spring-loaded structures achieve automatic backlash compensation through the compression and release of the spring.

[0004] Problems with existing technology: Although existing automatic brake compensation mechanisms have solved brake clearance compensation to some extent, some problems and limitations still exist.

[0005] First, the automatic compensation mechanism, limit structure, or locking mechanism of multi-threaded structures are relatively complex. Once a malfunction occurs, it requires operation by professional technicians, which increases maintenance costs.

[0006] Secondly, the automatic compensation mechanism of the ratchet structure cannot achieve rapid compensation like the multi-threaded structure. At the same time, due to structural issues, there is a minimum compensation gap.

[0007] Finally, although the automatic compensation mechanism of the spring-loaded structure can automatically compensate for the gap, the life of the spring is limited and it needs to be replaced regularly, which increases the maintenance frequency.

[0008] Furthermore, the existing automatic brake compensation mechanism cannot display the wear status of the friction pads to remind customers to replace them. Even after replacement, manual resetting is required, which is inconvenient and degrades the user experience. Utility Model Content

[0009] Purpose of the utility model: To provide an automatic compensation mechanism for hydraulic brakes, solving the problems mentioned above.

[0010] Technical solution: An automatic compensation mechanism for a hydraulic brake, comprising: a brake body housing (1);

[0011] In a further embodiment, a spring shaft (2) is provided inside the brake housing (1), and a spring or disc spring is arranged on the outside of the spring shaft (2);

[0012] The brake body housing (1) is provided with a hydraulic piston assembly (3), and the hydraulic piston assembly (3) is provided with a hollow bolt (4);

[0013] The hollow bolt (4) is provided with a central tie rod (5), a spherical washer (6) is provided below the central tie rod (5), and a cover (8) is provided above the central tie rod (5) for installing a displacement sensor to detect operation.

[0014] In a further embodiment, the hollow bolt (4) is fixed to the spring shaft (2) by a threaded connection.

[0015] In a further embodiment, a brake shoe (7) is provided below the spherical pad, the brake shoe (7) being used to mount the friction plate.

[0016] In a further embodiment, the central tie rod (5) is connected to the spring shaft (2) by a multi-threaded connection, and the central tie rod (5) is fixed to the spherical washer (6) and the brake shoe (7) by the thread.

[0017] In a further embodiment, the housing (8) is provided with a direction-adjustable ratchet limiting mechanism (9), and the housing (8) has a detection window to check the position of the central pull rod (5).

[0018] Compared with existing technologies, the beneficial effects of this technical solution are as follows:

[0019] 1. Simplified Adjustment and Maintenance: The automatic brake compensation mechanism of this utility model achieves rapid gap compensation and convenient limit and reset functions through the use of a multi-threaded and ratchet composite structure. Compared with the prior art, the adjustment and maintenance process of this utility model is simpler, requiring no professional technicians, reducing maintenance costs and improving user experience.

[0020] 2. Improved ease of reset: After the friction pads are replaced, the automatic compensation mechanism of the brake can be reset by adjusting the ratchet, which facilitates client application and further improves convenience and user experience.

[0021] 3. Automatic Clearance Compensation: The automatic clearance compensation mechanism of this invention can automatically compensate for clearance when the friction pads wear, preventing brake failure caused by excessive clearance. Compared with existing technologies, the automatic compensation function of this invention is more intelligent, improving the performance and safety of the equipment.

[0022] 4. Monitoring the condition of the friction pads: The automatic compensation mechanism of the brake of this utility model can detect the condition of the friction pads together with the friction pad sensing wire and the displacement sensor. When other sensing components fail, monitoring can continue. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the present invention.

[0024] Figure 2 This is a schematic diagram of the ratchet limiting mechanism of this utility model.

[0025] Reference numerals: 1. Brake body housing; 2. Spring shaft; 3. Hydraulic piston assembly; 4. Hollow bolt; 5. Central tie rod; 6. Spherical washer; 7. Brake shoe; 8. Cover; 9. Ratchet limit mechanism. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Firstly, compared with the existing technology, the present invention mainly solves the following technical problems:

[0028] 1. This solves the problem that existing automatic compensation mechanisms with multi-threaded threads, ratchet structures, or spring structures, while capable of automatically compensating for gaps, each have their own shortcomings.

[0029] 2. This solves the problem that the existing automatic brake compensation mechanism cannot display the wear status of the friction pads and remind customers to replace them.

[0030] 3. Automatic reset is achieved when the brake friction pads wear out, which can compensate for the gap during operation without requiring manual adjustment by the customer, thus improving convenience and user experience.

[0031] 4. After the friction pads are replaced, the automatic compensation mechanism of the brake can be initialized by adjusting the ratchet, which is convenient for client applications and improves convenience and user experience.

[0032] Secondly, in order to achieve the above objectives, the present invention mainly adopts the following technical means:

[0033] 1. The automatic compensation mechanism employs a central rod combining a multi-threaded thread and a ratchet mechanism. One side of the multi-threaded thread enables rapid clearance compensation, while the ratchet mechanism enables unidirectional rotation, thus achieving limit or locking functions. This design simplifies maintenance, eliminating the need for specialized technicians and reducing maintenance costs.

[0034] 2. When the friction plates wear, the automatic reset mechanism can compensate for the gap during operation, thereby avoiding the need for manual adjustment by the customer and improving convenience and user experience.

[0035] 3. After the friction pads are replaced, the automatic compensation mechanism of the brake can be reset by adjusting the ratchet, which facilitates client applications and further improves convenience and user experience.

[0036] 4. An observation window is provided on the brake housing to allow users to observe the operating status of the automatic compensation mechanism and thus monitor the lifespan of the friction pads. This enables timely detection of malfunctions in the friction pad sensing wires and displacement sensors.

[0037] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The following embodiments are for illustrative purposes only and do not limit the scope of protection of the present invention.

[0038] An automatic compensation mechanism for a hydraulic brake, such as Figure 1 As shown, the system includes: a brake housing (1) containing a spring shaft (2), with a spring or disc spring arranged on the outside of the spring shaft (2) to provide braking force. A hydraulic piston assembly (3) is mounted on the housing (1), and a hollow bolt (4) is mounted on the hydraulic piston assembly (3). The hollow bolt (4) is fixed to the spring shaft (2) by a threaded connection. A central tie rod (5) is mounted inside the hollow bolt (4), and the central tie rod (5) is connected to the spring shaft (2) by a multi-threaded connection. A spherical washer (6) is mounted below the central tie rod (5), and a brake shoe (7) is mounted below the spherical washer. The central tie rod (5) is fixed to the spherical washer (6) and the brake shoe (7) by threads. The brake shoe (7) is used to install friction plates. A cover (8) is mounted above the central tie rod (5) for mounting a displacement sensor to detect operation and has a detection window to check the position of the central tie rod. An adjustable ratchet limiting mechanism (9) is mounted inside the cover (8).

[0039] like Figures 1 to 2 As shown, the automatic compensation mechanism of this utility model achieves rapid automatic compensation through the design of the central pull rod (5) and the multi-threaded lower end. The upper ratchet structure, through the adjustable limiting structure, realizes the switching between automatic compensation and reset functions.

[0040] The design of the spherical pad (6) can automatically compensate for the angular deviation between the friction plate and the friction disk when realizing automatic compensation and reset.

[0041] like Figure 2 As shown, the adjustable ratchet limiting mechanism (9) consists of a ratchet structure at the upper end of the central pull rod (5) and a direction-adjustable limiting structure. The lower end of the central pull rod (5) is connected to the spring shaft through a multi-threaded connection.

[0042] The specific principle of this utility model is as follows:

[0043] Operation and automatic compensation (Operation A):

[0044] When the piston hydraulic assembly (21) is filled with oil, the ratchet limit is adjusted to the clockwise limit, and the hydraulic piston assembly (3) drives the hollow bolt (4) to move upward. The spring shaft (2) moves together with the hollow bolt (4). At this time, the central tie rod (5) moves upward together with the spring shaft (2) due to the ratchet limit. At this time, the disc spring is in a compressed state, and the brake shoe (7) moves upward together with the central tie rod (5). The friction pads separate from the brake disc, and the brake is in the open state.

[0045] When the piston hydraulic assembly (21) unloads oil, the ratchet limit is adjusted to the reverse pointer limit, the disc spring opens, and the spring shaft (2) moves downward. At this time, the center pull rod (5) moves downward together with the spring shaft (2) due to the ratchet limit, and the brake shoe (7) moves downward together with the center pull rod (5). The friction pads are in contact with the brake disc, and the brake is in the braking state. Moreover, due to inertia, the increased clearance when the friction pads wear will be compensated along with the downward movement of the center pull rod (5).

[0046] Replace the friction pads and perform automatic reset (Operation B):

[0047] When the piston hydraulic assembly (21) is filled with oil, the ratchet limit is adjusted to the clockwise limit, and the hydraulic piston assembly (3) drives the hollow bolt (4) to move upward. The spring shaft (2) moves together with the hollow bolt (4). At this time, the central tie rod (5) moves upward together with the spring shaft (2) due to the ratchet limit. At this time, the disc spring is in a compressed state, and the brake shoe (7) moves upward together with the central tie rod (5). The friction pads separate from the brake disc, and the brake is in the open state.

[0048] When the piston hydraulic assembly (21) unloads oil, the ratchet limit is not adjusted, the disc spring opens, and the spring shaft (2) moves downward. At this time, the central tie rod (5) will not move downward together with the spring shaft (2) due to the ratchet limit, and the brake shoe (7) will remain stationary together with the central tie rod (5).

[0049] When the piston hydraulic assembly (21) is filled with oil again, the ratchet limit is not adjusted, the disc spring is compressed, and the gap between the brake shoe (7) and the friction plate is increased, making it easier for the customer to replace the friction plate.

[0050] After replacing the friction pads, repeat the automatic compensation step A to compensate for the gap between the friction pads and the friction disc, thus completing the brake's reset state.

[0051] Operation A and Operation B can be switched through electronic program settings.

[0052] Meanwhile, the electronic control program can be connected to the operating system of the hydraulic control center to achieve linkage between brake use, friction pad replacement, and automatic compensation.

[0053] Due to the advanced nature of this technical solution, it can be widely applied in fields such as mechanical equipment manufacturing and industrial automation control.

[0054] Firstly, in the field of mechanical equipment manufacturing, the automatic brake compensation mechanism of this invention can greatly improve the reliability and service life of brakes, reduce equipment failure rates, and lower maintenance costs. At the same time, because its adjustment and maintenance process is relatively simple, it can reduce the need for specialized technicians and improve work efficiency.

[0055] Secondly, in the field of industrial automation control, the automatic reset lever of the ratchet can be electronically controlled. The automatic compensation mechanism of the brake of this utility model can realize precise control of the brake, improve control accuracy and response speed, and meet the high requirements of industrial automation for brakes.

[0056] In summary, the automatic brake reset mechanism of this utility model has broad market demand and application prospects, and is expected to play an important role in fields such as mechanical engineering, industrial automation and automobile manufacturing.

[0057] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An automatic compensation mechanism for a hydraulic brake, characterized in that, The automatic compensation mechanism includes: brake body housing (1); The brake housing (1) is provided with a spring shaft (2), and a spring or disc spring is arranged on the outside of the spring shaft (2); The brake body housing (1) is provided with a hydraulic piston assembly (3), and the hydraulic piston assembly (3) is provided with a hollow bolt (4); The hollow bolt (4) is provided with a central tie rod (5), a spherical washer (6) is provided below the central tie rod (5), and a cover (8) is provided above the central tie rod (5) for installing a displacement sensor to detect operation.

2. The automatic compensation mechanism for a hydraulic brake according to claim 1, characterized in that, The hollow bolt (4) is fixed to the spring shaft (2) by a threaded connection.

3. The automatic compensation mechanism for a hydraulic brake according to claim 1, characterized in that, A brake shoe (7) is provided below the spherical pad, and the brake shoe (7) is used to install the friction plate.

4. The automatic compensation mechanism for a hydraulic brake according to claim 3, characterized in that, The central tie rod (5) is connected to the spring shaft (2) by a multi-threaded connection, and the central tie rod (5) is fixed to the spherical washer (6) and the brake shoe (7) by the thread.

5. The automatic compensation mechanism for a hydraulic brake according to claim 1, characterized in that, The housing (8) is provided with a ratchet limiting mechanism (9) with adjustable direction, and the housing (8) has a detection window to check the position of the central pull rod (5).

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