Balance adjusting device for wheel side brake piston, brake system and vehicle
By using a mechanical bolt adjustment device in the brake system of the articulated dump truck, the problem that the traditional electronic adjustment system is easily damaged in harsh environments is solved, the piston balance adjustment is realized, and driving safety and comfort are improved.
Patent Information
- Application Number
- CN202421053519.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-15
AI Technical Summary
Traditional electronic adjustment systems are prone to damage or failure in the harsh environment of articulated dump trucks, making it difficult to effectively adjust the response time and stability of the brake system.
A mechanical bolt adjustment device is used to achieve balanced adjustment of the piston by adjusting the position of the bolt to ensure the response time and stability of the braking system.
Through the mechanical bolt adjustment device, the piston position can be flexibly adjusted according to different working conditions and driving needs, improving driving safety and comfort, and enhancing the reliability and stability of the braking system.
Smart Images
Figure CN222372861U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a balance regulating device for a wheel side brake piston, belonging to the technical field of brake systems. Background Art
[0002] Articulated dump trucks are mainly used in transportation operations in mines, water conservancy, ports, and docks. Their working environment is extremely harsh. During transportation, long distances and high-slope downhill road conditions place high demands on the braking system. Among the important components of vehicle safety performance, the braking system is one of them, and one of its key components is the brake piston. The balance adjustment of the brake piston plays a key role in improving the performance and reliability of the brake system. Under the above working environment, the traditional electronic adjustment system may be at risk of damage or failure. In this case, the use of mechanical bolt adjustment becomes a reliable solution. This adjustment method does not rely on complex electronic components, but achieves the balance adjustment of the piston by adjusting the position of the bolt.
[0003] The response time of the brake system can be easily controlled by adjusting the balance of the piston. It can be flexibly changed according to different working conditions and driving requirements, thus improving driving safety and comfort.
[0004] Although mechanical bolt adjustment has the disadvantages of limited adjustment range and relatively low adjustment accuracy, its stability and reliability still make it one of the preferred adjustment methods for the harsh environment in which articulated dump trucks are used. Therefore, when designing and selecting the brake system of an articulated dump truck, considering the importance of environmental conditions to the adjustment system, bolt balance adjustment becomes an effective technical means to ensure the reliability and stability of the vehicle in various extreme environments. Summary of the invention
[0005] The utility model provides a balance adjustment device for a wheel-side brake piston, which can flexibly change the position of the piston according to different working conditions and driving requirements, thereby improving driving safety and comfort.
[0006] The utility model is implemented according to the following technical solutions:
[0007] In the first aspect, the utility model provides a balance adjustment device for a wheel-side brake piston, comprising a brake carrier and a piston installed in the brake carrier and capable of axial movement, the piston is pushed to squeeze the inner and outer friction plates arranged alternately in the brake housing together to form a braking torque, the brake carrier is provided with an axial stepped hole, and an adjusting bolt for extending or shortening the response time of the brake system is installed in the stepped hole; the adjusting bolt is divided into a head and a tail, the head is gap-matched with the large hole of the stepped hole, and a first sealing component is installed between the head and the circumferential surface facing the stepped hole; the outer circumferential surface of the tail is provided with an external thread, which is spirally matched with the small hole of the stepped hole, and the braking stroke of the piston is adjusted by adjusting the length of the head of the adjusting bolt extending from the stepped hole; a locking nut for locking the adjusting bolt after the adjusted position is installed on the tail of the adjusting bolt located outside the brake carrier, and a protective component is assembled at the portion of the tail of the adjusting bolt extending outward from the locking nut.
[0008] In some embodiments, the protective component is a hollow cap nut, whose internal depth dimension is not less than the length dimension from the locking nut to the outer end face of the adjusting bolt, so that the cap nut completely covers the exposed part of the adjusting bolt.
[0009] In some embodiments, a second sealing component is installed between the cap nut and the locking nut to prevent dust and seal.
[0010] In some embodiments, the second sealing component is an O-ring, which is sleeved on the adjusting bolt between the cap nut and the locking nut, and the O-ring is squeezed by the cap nut to achieve dustproof and sealing functions.
[0011] In some embodiments, the first sealing component is an O-ring, at least one O-groove is provided on the outer peripheral surface of the head of the adjusting bolt along the axial direction, an O-ring is installed in the O-groove, and the sealing function is achieved by squeezing the O-ring by the brake carrier.
[0012] In some embodiments, a third sealing component is installed between the circumferential surfaces of the piston and the brake carrier facing each other.
[0013] In some embodiments, the third sealing component is a Glyd ring, at least one O-shaped groove is axially provided on the outer peripheral surface of the piston, a Glyd ring is installed in the O-shaped groove, and the sealing function is achieved by squeezing the Glyd ring by the brake carrier.
[0014] In some embodiments, a polygonal boss is cut on the outer peripheral surface of the tail of the adjusting bolt close to the axial end surface thereof, and the polygonal boss cooperates with a wrench tool to realize screwing the adjusting bolt into or out of the stepped hole.
[0015] In a second aspect, the utility model provides a braking system, comprising at least one of the above-mentioned balancing adjustment devices for wheel-side brake pistons.
[0016] In some embodiments, the braking system includes three balancing adjustment devices for wheel-side brake pistons, and the three balancing adjustment devices for wheel-side brake pistons are evenly spaced and located on the same pitch circle.
[0017] In a third aspect, the utility model provides a vehicle equipped with the above-mentioned braking system.
[0018] Compared with the prior art, the utility model has the following beneficial effects:
[0019] The utility model can simply control the response time of the brake system by adjusting the adjustment bolt. When the adjustment bolt is screwed in, the response time of the brake system can be shortened and the sensitivity of the brake system can be improved; when the adjustment bolt is screwed out, the response time of the brake system can be extended and the stability of the brake system can be increased. This adjustment method allows flexible changes according to different working conditions and driving needs, improving driving safety and comfort. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.
[0021] In the attached picture:
[0022] Figure 1 It is the position diagram of three balance adjustment devices of the utility model;
[0023] Figure 2 It is a cross-sectional view of the balance adjustment device of the utility model;
[0024] Figure 3 It is a cross-sectional view of a stepped hole of the brake carrier of the utility model;
[0025] Figure 4 This is a structural diagram of the adjusting bolt of the utility model;
[0026] Figure 5 This is a balance adjustment diagram of the piston of the utility model;
[0027] Wherein: 1. brake carrier, 2. brake housing, 3. piston, 4. grid ring, 5. grid ring, 6. adjusting bolt, 7. O-ring, 8. locking nut, 9. cap nut, 10. O-ring, 11. inner friction plate, 12. outer friction plate, I. balance adjustment device, II. balance adjustment device, III. balance adjustment device.
[0028] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.
[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.
[0031] 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0032] like Figure 2 As shown, a balance adjustment device for a wheel-side brake piston comprises a brake carrier 1 and a piston 3 installed in the brake carrier 1 and capable of axial movement. The piston 3 is pushed to squeeze the inner friction plates 11 and the outer friction plates 12 arranged alternately in the brake housing 2 together to form a braking torque. The brake carrier 1 is provided with an axial stepped hole, and an adjustment bolt 6 for extending or shortening the response time of the brake system is installed in the stepped hole; Figure 3 As shown, the stepped hole is divided into two holes, the large hole is a through hole, used as a guide, and the small hole is a threaded hole, used for adjustment; Figure 2 , Figure 4As shown, the adjusting bolt 6 is divided into a head and a tail, the head is clearance-matched with the large hole of the stepped hole, and a first sealing component is installed between the head and the circumferential surface facing the stepped hole; the outer circumferential surface of the tail is provided with an external thread, which is spirally matched with the small hole of the stepped hole, and the braking stroke of the piston 3 is adjusted by adjusting the length of the head of the adjusting bolt 6 extending from the stepped hole; a locking nut 8 for locking the adjusting bolt 6 after the adjusted position is installed on the tail of the adjusting bolt 6 located outside the brake carrier 1, and a protective component is assembled at the portion of the tail of the adjusting bolt 6 extending outward from the locking nut 8.
[0033] The preferred solution is Figure 2 As shown, the protective component is a hollow cap nut 9, whose internal depth dimension is not less than the length dimension from the locking nut 8 to the outer end face of the adjusting bolt 6, so that the cap nut 9 completely covers the exposed part of the adjusting bolt 6.
[0034] In a further solution, a second sealing component is installed between the cap nut 9 and the locking nut 8 to prevent dust and seal.
[0035] The preferred solution is Figure 2 As shown, the second sealing component is an O-ring 10, which is sleeved on the adjusting bolt 6 between the cap nut 9 and the locking nut 8. The cap nut 9 squeezes the O-ring 10 to achieve dustproof and sealing functions.
[0036] The preferred solution is Figure 2 As shown, the first sealing component is an O-ring 7. At least one O-groove is axially arranged on the outer peripheral surface of the head of the adjusting bolt 6. An O-ring 7 is installed in the O-groove. The brake carrier 1 squeezes the O-ring 7 to achieve the sealing function.
[0037] In a further embodiment, a third sealing member is installed between the facing peripheral surfaces of the piston 3 and the brake carrier 1 .
[0038] The preferred solution is Figure 2 As shown, the third sealing component is a Glyd ring 4, 5, and at least one O-shaped groove is provided on the outer peripheral surface of the piston 3 along the axial direction. A Glyd ring is installed in the O-shaped groove, and the brake carrier 1 squeezes the Glyd rings 4, 5 to achieve the sealing function.
[0039] Further solutions, such as Figure 4 As shown, a polygonal boss is cut on the outer peripheral surface of the tail of the adjusting bolt 6 close to its axial end surface, and the polygonal boss cooperates with a wrench tool to realize the screwing in or screwing out of the adjusting bolt 6 in the stepped hole.
[0040] It should be noted that the polygonal boss may be a cubic structure or a hexagonal structure.
[0041] The utility model also provides a braking system, comprising at least one of the above-mentioned balancing adjustment devices for wheel-side brake pistons.
[0042] Further solutions, such as Figure 1 As shown, the braking system includes three balance adjustment devices, balance adjustment device I, balance adjustment device II and balance adjustment device III are evenly spaced and located on the same pitch circle.
[0043] Further solutions, such as Figure 5 As shown, in the initial setting, the adjusting bolts 6 in the three balance adjustment devices are kept at a uniform distance X from the inner wall of the brake carrier 1 .
[0044] Combination Figures 1 to 5 ,Comprehensively describe the three-point balancing adjustment device for wheel-side brake pistons. During the design calculation, the response time of the brake system is set in a reasonable range in combination with the actual vehicle feedback, that is, the design value X is determined. During assembly, the X value is slightly adjusted according to the actual needs of the processing of parts and the assembly process between parts. When the vehicle is in use, the inner friction plate 11 rotating with the wheel hub (not shown) and the outer friction plate 12 fixed in the brake housing 2 push the piston 3 after the oil pressure is connected, forcing the two to be squeezed on one side, forming a braking torque, causing the vehicle to stop. Because friction material is attached to the inner friction plate 11, which is a consumable part, long-term use of the brake will inevitably cause the response of the brake system to become slow. Therefore, within the reasonable range of the adjustment value X, it can be adjusted manually: first unscrew the cap nut 9, remove the O-ring 10, loosen the nut 8, and use a wrench to screw in the adjustment bolt 6. The screw-in value can be measured from the observation port (not marked) on the brake carrier 1. Note that when the maximum limit of the X value is exceeded, the inner and outer friction plates must be replaced, and then the nut 8 is tightened according to the standard torque, and then the O-ring 10 and the cap nut 9 are installed.
[0045] The utility model also provides a vehicle equipped with the above-mentioned braking system.
[0046] Preferably, the vehicle comprises an articulated dump truck.
[0047] In summary, the utility model has the following functions:
[0048] 1. The innovative design of the utility model is that a piston is installed in the brake carrier, a Gly ring is used as a seal, and three stepped holes are opened on the brake carrier. An adjusting bolt is installed in the stepped hole, an O-ring is installed on the head of the adjusting bolt, and the exposed thread at the tail of the adjusting bolt is locked with a locking nut and protected by a cap nut.
[0049] 2. The stepped holes opened on the brake carrier have a large through hole as a guide and a small threaded hole as an adjustment. The three stepped holes are on the same pitch circle.
[0050] 3. The special adjustment bolt is divided into a head and a tail. The head is clearance-matched with the large hole of the brake carrier. The head is provided with an O-shaped groove and equipped with an O-shaped ring to seal. The tail is threaded and spirally matched with the small hole (threaded hole) of the brake carrier. The position of the adjustment bolt is fixed by an external locking nut, and its exposed part is protected by a cap nut.
[0051] 4. A boss is cut on the thread at the tail of the adjusting bolt to facilitate screwing in or out with a wrench.
[0052] 5. There is an O-ring between the locking nut and the cap nut, which is deformed by the extrusion of the two to prevent dust and provide a certain sealing effect.
[0053] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.
[0054] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present utility model and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by the present application.
[0055] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent can make some changes or modify the technical content suggested above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the solution of the utility model.
Claims
1. A balancing and adjusting device for a wheel-side brake piston, comprising a brake carrier and a piston installed in the brake carrier and capable of axial movement, the piston is pushed to squeeze the inner and outer friction plates arranged alternately in the brake housing together to form a braking torque, characterized in that: The brake carrier is provided with an axial stepped hole, in which an adjustment bolt for extending or shortening the response time of the brake system is installed; The adjusting bolt is divided into a head and a tail, the head is clearance-matched with the large hole of the stepped hole, and a first sealing component is installed between the head and the circumferential surface facing the stepped hole; The outer peripheral surface of the tail portion is provided with an external thread, which is spirally matched with the small hole of the stepped hole, and the braking stroke of the piston is adjusted by adjusting the length of the head of the adjusting bolt extending from the stepped hole; A locking nut is installed on the tail of the adjusting bolt located outside the brake carrier, and a protective component is installed at the position where the tail of the adjusting bolt protrudes outward from the locking nut.
2. A balance adjustment device for a wheel brake piston according to claim 1, characterized in that: The protective component is a hollow cap nut, the internal depth of which is not less than the length from the locking nut to the outer end face of the adjusting bolt, so that the cap nut completely covers the exposed part of the adjusting bolt.
3. A balance adjustment device for a wheel brake piston according to claim 2, characterized in that: A second sealing component having dustproof and sealing functions is installed between the cap nut and the locking nut.
4. A balance adjustment device for a wheel brake piston according to claim 3, characterized in that: The second sealing component is an O-ring, which is sleeved on the adjusting bolt between the cap nut and the locking nut. The cap nut squeezes the O-ring to achieve dustproof and sealing functions.
5. A balance adjustment device for a wheel brake piston according to claim 1, characterized in that: The first sealing component is an O-ring, and at least one O-groove is axially arranged on the outer peripheral surface of the head of the adjusting bolt, and an O-ring is installed in the O-groove. The sealing function is achieved by squeezing the O-ring by the brake carrier.
6. A balance adjustment device for a wheel brake piston according to claim 1, characterized in that: A third sealing member is installed between the peripheral surfaces of the piston and the brake carrier that face each other.
7. A balance adjustment device for a wheel brake piston according to claim 6, characterized in that: The third sealing component is a Glyd ring. At least one O-shaped groove is provided on the outer peripheral surface of the piston along the axial direction. A Glyd ring is installed in the O-shaped groove. The brake carrier squeezes the Glyd ring to achieve a sealing function.
8. A balance adjustment device for a wheel brake piston according to claim 1, characterized in that: A polygonal boss is cut on the outer peripheral surface of the tail of the adjusting bolt close to the axial end surface thereof, and the polygonal boss cooperates with a wrench tool to realize screwing the adjusting bolt into or out of the stepped hole.
9. A braking system, characterized in that: The invention comprises at least one balancing and adjusting device for a wheel brake piston according to any one of claims 1 to 8.
10. A braking system according to claim 9, characterized in that: The brake system comprises three balancing adjustment devices for wheel-side brake pistons, and the three balancing adjustment devices for wheel-side brake pistons are evenly and alternately located on the same pitch circle.
11. A vehicle, characterized in that: A brake system according to claim 9 or 10 is installed.