Micro hydraulic brake with compact structure
By designing a compact micro-motion hydraulic brake, the pressure of hydraulic oil and adjustable friction surfaces are used to solve the problems of insufficient braking capacity and poor stability in the prior art, and efficient braking of rotating and linear moving parts is achieved. It has low electromagnetic interference and high modularity, and is suitable for mechanical environment testing equipment.
Patent Information
- Application Number
- CN202420943909.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-06
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-06
AI Technical Summary
In the mechanical environment test equipment, existing brakes have problems such as insufficient braking capacity, poor stability, large electromagnetic interference signal, uncompact structure, low modularity and difficulty in extending braking capacity, especially the problem of rotating and linear moving parts. Braking requirements.
A compact micro-motion hydraulic brake is designed, including a brake seat, seal and brake head, forming a sealed oil cavity, and an anti-interference cover is formed on the outside, suitable for rotating and linear moving parts, and is achieved through the pressure of hydraulic oil. Braking, and the friction surface of the brake head acts directly on the moving parts, the installation position and area are adjustable, and the clamp positioning improves stability.
It has achieved strong braking capacity, stable performance, small electromagnetic interference, high modularity, and convenient braking capacity expansion. It is suitable for braking of rotating and linear moving parts. It has a simple structure and convenient operation, which surpasses the use effect of traditional brakes.
Smart Images
Figure CN222296799U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical environment testing equipment, in particular to a micro-motion hydraulic brake with a compact structure. Background Art
[0002] The micro-hydraulic brake is a supporting equipment for mechanical environmental testing. In the field of mechanical environmental testing equipment, the requirements for brakes are relatively stringent. They must simultaneously meet the following conditions: strong braking ability, stable braking performance, small electromagnetic interference signal, compact structure, high degree of modularization, and convenient expansion of braking ability. Due to the development of modern industrial machinery, brakes have emerged in a variety of new structural types. Drum brakes, caliper disc brakes, magnetic powder brakes, and electromagnetic brakes are the most widely used. With the continuous development of science and technology, people have higher and higher requirements for the manufacturing process of micro-hydraulic brakes.
[0003] Drum brakes have large braking torque, simple structure, reliability, low cost, and conform to traditional design. The braking efficiency and heat dissipation of drum brakes are much worse. The braking force stability of drum brakes is poor, and the braking force varies greatly on different road surfaces, which is not easy to control. Due to the poor heat dissipation performance, a large amount of heat will accumulate during the braking process. Brake blocks and wheel drums are more likely to undergo extremely complex deformation under the influence of high temperature, which is prone to brake fading and trembling, causing a decrease in braking efficiency. In addition, after using drum brakes for a period of time, the gap of the brake shoes should be adjusted regularly, and even the entire brake drum should be disassembled to clean the accumulated brake powder. At the same time, the size of the brake itself is also large, and there are certain requirements for installation space.
[0004] Caliper disc brakes are small in size and mass, have strong heat dissipation capacity and good thermal stability, so they are widely used in most cars and light trucks. The disadvantage is that the friction plate acts directly on the disc, there is no automatic friction amplification effect, and the braking efficiency is low.
[0005] The magnetic powder brake has high control accuracy, but the torque is relatively small, and the working environment requirements are high, with requirements on humidity and heat dissipation.
[0006] Electromagnetic brake is a connector that transmits the torque of the active side to the passive side. It can be freely connected, disconnected or braked as needed. It has the advantages of compact structure, simple operation, sensitive response, long life, reliable use, and easy remote control. Braking parts are easy to damage, and there are often some faults such as slow brake action and disordered action. Common mechanical failure phenomena include insufficient braking force, the brake arm cannot be opened, the brake release action is slow, the brake spring is tightened and the braking torque is also increased, but it still cannot brake in time, the brake suddenly fails, the brake wheel temperature is too high, the brake shoe smokes, and the brake fails. There are still some problems with the electromagnetic brake itself, for example: the release and closing time of the electromagnetic brake is short, the dynamic impact when closing is large, and it is not stable enough; as an electrical device, whether it is AC or DC power supply, it must be controlled by a dedicated power supply. When the power supply voltage fluctuates greatly, its control and maintenance are relatively complicated and not easy to control; the electromagnetic brake mainly achieves braking through the movement of the armature, so the size of the air gap of the armature is relatively high, but the air gap is very small, less than 1mm. If it is operated improperly, it can easily lead to operating failures, resulting in poor reliability of the brake and unstable operation.
[0007] Among the above-mentioned commonly used brakes, drum brakes, magnetic powder brakes and electromagnetic brakes are only suitable for braking rotating parts. Only caliper disc brakes can be used for both rotating and linear motion parts. However, they can only be used for equipment that does not require high installation space and cannot meet the requirements of compact mechanical environment test equipment. For this reason, we propose a compact micro-hydraulic brake. Utility Model Content
[0008] Technical problem solved: In view of the shortcomings of the prior art, the utility model provides a compact micro-hydraulic brake with strong braking ability, stable braking performance, small electromagnetic interference signal, high degree of modularization, and convenient expansion of braking ability. It can be used for braking rotating moving parts and can also be used for braking linear moving parts, which can effectively solve the problems in the background technology.
[0009] Technical solution: To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a compact micro-hydraulic brake, including a brake body, the brake body including a brake seat, a seal and a brake head, an oil inlet is opened on the brake seat, the seal is located between the brake seat and the brake head, the brake seat, the seal and the brake head form a closed oil chamber, the end of the brake head is connected to a relatively moving part, the outer side of the brake body is integrally formed with an anti-interference cover, and the brake body is used on mechanical environment testing equipment.
[0010] Preferably, in the first structure, the brake body is applied to a rotating motion component, and the brake body includes a brake seat, a brake end cover, an oil inlet, an oil chamber and a brake head, and the brake head is connected to a rotating shaft, and a bearing and a bearing seat are provided on the rotating shaft.
[0011] Preferably, the friction surface of the brake head directly acts on the rotating shaft, the brake seat and the brake end cover are both annular structures, and the brake seat is provided with a mounting position for the brake head, and the number of the mounting positions is adjustable.
[0012] Preferably, in the second structure, the brake body is applied to a linear motion component. In this case, the brake body includes a brake seat, an oil inlet, a brake head and an oil chamber, and a linear guide is connected to the brake head.
[0013] Preferably, the brake seat is embedded in the linear guide rail, and the brake head becomes a part of the linear guide rail, and the number and area of the brake head are adjustable.
[0014] Preferably, a clamp is provided at the position where the end of the anti-interference cover is connected to the brake seat, and the position is performed by the clamp. A shielding sheet and a diaphragm are integrally formed inside the anti-interference cover.
[0015] Beneficial effects: Compared with the prior art, the utility model provides a compact micro-motion hydraulic brake, which has the following beneficial effects: this compact micro-motion hydraulic brake has strong braking ability, stable braking performance, small electromagnetic interference signal, high degree of modularization, and convenient expansion of braking ability. It can be used for braking of rotating moving parts and can also be used for braking of linear moving parts. The entire micro-motion hydraulic brake has a simple structure, is easy to operate, and the effect of use is better than that of traditional methods. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The utility model is a schematic diagram of the overall structure of a compact micro-hydraulic brake.
[0017] Figure 2 The utility model is a schematic structural diagram of a brake body in a compact micro-hydraulic brake.
[0018] Figure 3 This is a structural schematic diagram of a first embodiment of a compact micro-hydraulic brake of the utility model.
[0019] Figure 4 The utility model is a structural schematic diagram of a side view of a rotating shaft in a compact micro-hydraulic brake.
[0020] Figure 5 This is a structural schematic diagram of a second embodiment of a compact micro-hydraulic brake of the utility model.
[0021] Figure 6 The utility model is a schematic structural diagram of an anti-interference cover in a micro-hydraulic brake with a compact structure.
[0022] In the figure: 1. Brake body; 2. Oil inlet; 3. Brake seat; 4. Seal; 5. Brake head; 6. Relative motion part; 7. Brake end cover; 8. Oil chamber; 9. Rotating shaft; 10. Bearing; 11. Bearing seat; 12. Linear guide; 13. Anti-interference cover; 14. Shielding plate; 15. Diaphragm; 16. Clamp. DETAILED DESCRIPTION
[0023] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments, but those skilled in the art will understand that the embodiments described below are part of the embodiments of the utility model, rather than all of the embodiments, and are only used to illustrate the utility model, and should not be considered as limiting the scope of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the utility model. If the specific conditions are not specified in the embodiments, they are carried out according to conventional conditions or conditions recommended by the manufacturer. If the manufacturer is not specified for the reagents or instruments used, they are all conventional products that can be purchased commercially.
[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0026] like Figure 1-6As shown, a compact micro-hydraulic brake comprises a brake body 1, wherein the brake body 1 comprises a brake seat 3, a seal 4 and a brake head 5, an oil inlet 2 is provided on the brake seat 3, the seal 4 is located between the brake seat 3 and the brake head 5, the brake seat 3, the seal 4 and the brake head 5 form a closed oil chamber 8, the end of the brake head 5 is connected with a relatively moving part 6, and an anti-interference cover 13 is integrally formed on the outer side of the brake body 1. The brake body 1 is applied to mechanical environment test equipment, has strong braking ability, stable braking performance, small electromagnetic interference signal, high degree of modularization, and convenient expansion of braking ability, and can be used for braking of rotating moving parts, and can also be used for braking of linear moving parts.
[0027] Furthermore, in the first structure, the brake body 1 is applied to a rotating moving part. At this time, the brake body 1 includes a brake seat 3, a brake end cover 7, an oil inlet 2, an oil chamber 8 and a brake head 5, and the brake head 5 is connected to a rotating shaft 9, and the rotating shaft 9 is provided with a bearing 10 and a bearing seat 11.
[0028] Furthermore, the friction surface of the brake head 5 directly acts on the rotating shaft 9, the brake seat 3 and the brake end cover 7 are both annular structures, and the brake seat 3 is provided with a mounting position for the brake head 5, and the number of the mounting positions is adjustable.
[0029] Furthermore, in the second structure, the brake body 1 is applied to a linear motion component. In this case, the brake body 1 includes a brake seat 3, an oil inlet 2, a brake head 5 and an oil chamber 8, and a linear guide rail 12 is connected to the brake head 5.
[0030] Furthermore, the brake seat 3 is embedded in the linear guide rail 12, and the brake head 5 becomes a part of the linear guide rail 12, and the number and area of the brake head 5 are adjustable.
[0031] Furthermore, a clamping piece 16 is engaged and positioned at the position where the end of the anti-interference cover 13 is connected to the brake seat 3, and is positioned by the clamping piece 16. A shielding sheet 14 and a diaphragm 15 are integrally formed inside the anti-interference cover 13.
[0032] A compact micro-motion hydraulic brake is composed of a brake seat, a brake head, and a seal. The brake seat is provided with an oil inlet. The brake seat, the brake head, and the seal form a closed oil chamber.
[0033] When the brake is working, hydraulic oil is injected through the oil inlet to push the brake head to move. The pressure of the hydraulic oil exerts positive pressure on the relatively moving parts through the brake head to form braking force:
[0034] Where, μ—friction coefficient
[0035] P—Hydraulic oil pressure
[0036] S—Brake head area
[0037] Example 1: Application on rotating moving parts
[0038] The friction surface of the brake head acts directly on the rotating shaft. The brake seat and brake end cover are designed in a ring shape. The brake seat is provided with a mounting position for the brake head. The number of mounting positions can be adjusted according to actual needs, as shown in the right figure. The brake seat and the brake end cover are sealed by a seal and fixed by a threaded connection to form a brake module. A set of equipment can connect multiple brake modules in parallel, and the braking force is:
[0039] Where n is the number of brake heads.
[0040] μ—friction coefficient
[0041] P—Hydraulic oil pressure
[0042] S—Brake head area
[0043] Example 2: Application on linear motion components
[0044] The brake seat is embedded in the moving part, and the brake head becomes a part of the moving part. When the brake is activated, the moving part can be braked. The number and area of the brake heads can be adjusted.
[0045] The brake seat can also be designed to be fixed, which is determined according to the actual needs of the project.
[0046] Working principle: The utility model includes a brake body 1, an oil inlet 2, a brake seat 3, a seal 4, a brake head 5, a relative motion component 6, a brake end cover 7, an oil chamber 8, a rotating shaft 9, a bearing 10, a bearing seat 11, a linear guide 12, an anti-interference cover 13, a shielding sheet 14, a diaphragm 15, and a clamp 16. It has strong braking ability, stable braking performance, small electromagnetic interference signal, high degree of modularization, and convenient expansion of braking ability. It can be used for braking of rotating motion components, and can also be used for braking of linear motion components.
[0047] It should be noted that, in this article, relational terms such as first and second (number one, number two), etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0048] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.
Claims
1. A compact inching hydraulic brake, comprising a brake body (1), characterized in that: The brake body (1) comprises a brake seat (3), a seal (4) and a brake head (5); an oil inlet (2) is provided on the brake seat (3); the seal (4) is located between the brake seat (3) and the brake head (5); the brake seat (3), the seal (4) and the brake head (5) form a closed oil chamber (8); a relatively moving component (6) is connected to the end of the brake head (5); an anti-interference cover (13) is integrally formed on the outer side of the brake body (1); and the brake body (1) is used in mechanical environment testing equipment.
2. A compact inching hydraulic brake according to claim 1, characterized in that: In the first structure, the brake body (1) is applied to a rotating moving part. In this case, the brake body (1) comprises a brake seat (3), a brake end cover (7), an oil inlet (2), an oil chamber (8) and a brake head (5). The brake head (5) is connected to a rotating shaft (9), and a bearing (10) and a bearing seat (11) are arranged on the rotating shaft (9).
3. A compact inching hydraulic brake according to claim 2, characterized in that: The friction surface of the brake head (5) directly acts on the rotating shaft (9); the brake seat (3) and the brake end cover (7) are both annular structures; a mounting position for the brake head (5) is arranged on the brake seat (3), and the number of mounting positions is adjustable.
4. A compact inching hydraulic brake according to claim 1, characterized in that: In the second structure, the brake body (1) is applied to a linear motion component. In this case, the brake body (1) comprises a brake seat (3), an oil inlet (2), a brake head (5) and an oil chamber (8), and a linear guide rail (12) is connected to the brake head (5).
5. A compact inching hydraulic brake according to claim 4, characterized in that: The brake seat (3) is embedded in the linear guide rail (12), and the brake head (5) becomes a part of the linear guide rail (12). The number and area of the brake heads (5) are adjustable.
6. A compact inching hydraulic brake according to claim 1, characterized in that: A clamping piece (16) is engaged and positioned at a position where the end of the anti-interference cover (13) is connected to the brake seat (3), and positioning is performed by the clamping piece (16). A shielding sheet (14) and a diaphragm (15) are integrally formed inside the anti-interference cover (13).