Brake assembly body structure and brake clamp hanging bracket thereof

Abstract

The utility model discloses a brake assembly body structure and a brake clamp hanging bracket thereof.The brake clamp hanging bracket is applied to the brake assembly body structure and comprises an upper-layer plate, a lower-layer plate and an I-like beam arranged between the upper-layer plate and the lower-layer plate; a fixed main shaft sleeve is arranged on the upper-layer plate; a first lever fulcrum hole and a second lever fulcrum hole are formed in the upper layer plate; a third lever fulcrum hole and a fourth lever fulcrum hole are formed in the lower layer plate; the first lever fulcrum hole and the third lever fulcrum hole are arranged in the same vertical direction, and the second lever fulcrum hole and the fourth lever fulcrum hole are arranged in the same vertical direction. And the brake clamp hanging bracket is made of a carbon fiber composite material. According to the brake clamp hanging bracket, the carbon fibers are adopted as the composite material, the light weight of the brake clamp hanging bracket is achieved, and the brake clamp hanging bracket has the characteristics of being light, resistant to corrosion and resistant to fatigue. The brake clamp hanging bracket is suitable for brake clamps of three-point hanging and four-point hanging.

Description

Technical Field

[0001] This application relates to the technical field of rail transit vehicles and their braking systems, and in particular to a brake assembly structure and its brake caliper hanger. Background Technology

[0002] With the rapid development of the rail transit industry, the demand for rail transit vehicles is also gradually increasing. To address this, the rail transit industry is continuously innovating technologically to make rail trains lighter, thereby enabling them to achieve lower energy consumption, faster operating speeds, higher carrying capacity, stronger protection capabilities, longer lifespans, and easier maintenance.

[0003] Currently, carbon fiber, as a lightweight, high-strength, and high-rigidity new material, is widely used in the lightweighting of rail vehicles. The brake caliper unit is a crucial component of a disc brake system, consisting of a follower device, brake caliper, and brake cylinder. As a key component of the braking system, the brake caliper unit plays a vital role in the safety of train operation. Furthermore, due to the significant weight of a single brake caliper unit, multiple units are required on a single train. Therefore, achieving lightweighting of the brake caliper is crucial for the overall lightweighting process of the train. To meet the requirements of compactness and lightweighting, this invention provides a lightweight composite material design scheme for key components of the brake caliper unit, improving its fatigue resistance and corrosion resistance.

[0004] Therefore, based on years of experience and practice in related industries, the inventor proposed a brake assembly structure and its brake caliper hanger to overcome the shortcomings of existing technologies.

[0005] This section is intended to provide background or context for the embodiments of this application set forth in the claims. The description herein is not an admission that it is prior art simply because it is included in this section. Utility Model Content

[0006] To address the problems in the prior art, this application provides an apparatus for achieving lightweighting of the brake caliper hanger, and making the brake caliper hanger lightweight, corrosion-resistant and fatigue-resistant.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a brake caliper hanger, applied to a brake assembly structure. The brake caliper hanger includes: an upper plate, a lower plate, and an I-beam-like structure disposed between the upper plate and the lower plate;

[0008] The upper plate is provided with a fixed spindle sleeve; the upper plate is provided with a first lever fulcrum hole and a second lever fulcrum hole; the lower plate is provided with a third lever fulcrum hole and a fourth lever fulcrum hole; the first lever fulcrum hole and the third lever fulcrum hole are located in the same vertical direction, and the second lever fulcrum hole and the fourth lever fulcrum hole are located in the same vertical direction; wherein, the brake caliper hanger is made of carbon fiber composite material.

[0009] Preferably, the spindle hole of the fixed spindle sleeve is fitted onto a rigid shaft; the first lever fulcrum hole and the third lever fulcrum hole are fitted onto one of the brake lever bolts of the brake assembly structure, and the second lever fulcrum hole and the fourth lever fulcrum hole are fitted onto the other brake lever bolt of the brake assembly structure.

[0010] Preferably, the fixed spindle sleeve is subjected to longitudinal impact stress, and the four lever fulcrum holes are subjected to transverse tensile stress.

[0011] Preferably, the thickness of the I-beam, the upper plate, and the lower plate is the same.

[0012] Preferably, the outer ring of the fixed spindle sleeve is integrally formed with the upper plate, the I-beam, and the lower plate.

[0013] Preferably, the center of the holes of the first lever fulcrum hole and the second lever fulcrum hole is located inside the extension line of the concave contour boundary line connecting the upper plate and the I-beam.

[0014] Preferably, the center of the holes of the third lever fulcrum hole and the fourth lever fulcrum hole is located inside the extension line of the concave contour boundary line connecting the lower plate and the I-beam.

[0015] Preferably, the first lever fulcrum hole and the second lever fulcrum hole are symmetrically arranged at both ends of the upper plate, close to the concave side of the upper plate; the third lever fulcrum hole and the fourth lever fulcrum hole are symmetrically arranged at both ends of the lower plate, close to the concave side of the upper plate.

[0016] A brake assembly structure includes: a brake disc, a cylinder, two brake pad supports, two brake levers, two brake lever bolts, and the brake caliper hanger;

[0017] The brake lever includes: two parallel plates and a connecting rod connecting the two parallel plates. Each parallel plate is provided with a first end ring, a second end ring and an intermediate ring. The first end ring is sleeved on the vertical rod of the brake pad support, the intermediate ring is sleeved on the brake lever bolt, and the second end ring is respectively sleeved on both ends of the connecting piece connected to the cylinder.

[0018] One of the brake lever bolts passes through the first lever fulcrum hole and the third lever fulcrum hole of the brake caliper hanger, and the other brake lever bolt passes through the second lever fulcrum hole and the fourth lever fulcrum hole of the brake caliper hanger; the brake pad holder is used to clamp the brake disc.

[0019] Preferably, the brake assembly structure further includes a suspension rod, which is connected to the top connecting ring of the brake pad support by bolts.

[0020] This utility model provides a brake assembly structure and its brake caliper hanger, which has the following beneficial effects:

[0021] This invention relates to a brake caliper hanger that uses carbon fiber as a composite material, achieving lightweight design and giving it characteristics of being lightweight, corrosion-resistant, and fatigue-resistant. This brake caliper hanger is suitable for both three-point and four-point suspension brake calipers. While meeting braking requirements, it achieves the goal of weight reduction and speed increase for high-speed trains. Furthermore, the I-beam-like structure, upper plate, and lower plate are set to have equal thickness to reduce internal stress. Considering the characteristics of composite materials, relevant modifications are made by completing the hollow parts of the upper plate, lower plate, and I-beam-like structure, avoiding the performance and stability degradation caused by openings in the composite material. The concave boundary of the upper and lower plates is set outside the center of the lever fulcrum hole, ensuring that the principal stress is tensile stress, thus avoiding the performance degradation caused by excessive bending moment at the lever fulcrum hole. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0023] Figure 1 This is a schematic diagram of the physical structure of the brake caliper hanger in an embodiment of this utility model;

[0024] Figure 2 This is a schematic diagram of the physical structure of the brake assembly in an embodiment of this utility model;

[0025] Figure 3 This is a schematic diagram of the physical structure of the brake lever in an embodiment of this utility model. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0028] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0029] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0030] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] To achieve lightweight brake caliper hangers, this application provides a brake assembly structure and its brake caliper hanger, which is lightweight, corrosion-resistant, and fatigue-resistant. Furthermore, this brake caliper hanger is also suitable for three-point and four-point brake calipers.

[0033] like Figure 1 and Figure 2 As shown, the brake caliper hanger 100 is applied to a brake assembly structure 200.

[0034] The brake caliper hanger 100 includes: a fixed spindle sleeve 102, an upper plate 108, a lower plate 109, and an I-beam 107 disposed between the upper plate 108 and the lower plate 109. The brake caliper hanger 100 is made of carbon fiber composite material.

[0035] The upper plate 108 is provided with a first lever fulcrum hole 103 and a second lever fulcrum hole 104. The lower plate 109 is provided with a third lever fulcrum hole 105 and a fourth lever fulcrum hole 106. The first lever fulcrum hole 103 and the third lever fulcrum hole 105 are arranged in the same vertical direction, and the second lever fulcrum hole 104 and the fourth lever fulcrum hole 106 are arranged in the same vertical direction.

[0036] Specifically, the first lever fulcrum hole 103 and the third lever fulcrum hole 105 are coaxially arranged, meaning the axis of the first lever fulcrum hole 103 and the axis of the third lever fulcrum hole 105 are on a straight line, so that the brake lever 204 can pass through the first lever fulcrum hole 103 and the third lever fulcrum hole 105. The second lever fulcrum hole 104 and the fourth lever fulcrum hole 106 are coaxially arranged, meaning the axis of the second lever fulcrum hole 104 and the axis of the fourth lever fulcrum hole 106 are on a straight line, so that the brake lever 204 can pass through the second lever fulcrum hole 104 and the fourth lever fulcrum hole 106.

[0037] In one embodiment, the first lever fulcrum hole 103, the second lever fulcrum hole 104, the third lever fulcrum hole 105 and the fourth lever fulcrum hole 106 are all circular through holes, used for pivoting with their corresponding brake levers 204.

[0038] Specifically, the first lever fulcrum hole 103 and the second lever fulcrum hole 104 are symmetrically arranged at both ends of the upper plate 108, near the concave side 110 of the upper plate 108. The third lever fulcrum hole 105 and the fourth lever fulcrum hole 106 are symmetrically arranged at both ends of the lower plate 109, near the concave side 110 of the upper plate 108. The concave side 110 of the upper plate 108 is near the brake pad support 201, and the other side 111 of the upper plate 108 (the side opposite to the concave side 110) is near the cylinder 23. The concave side 110 of the lower plate 109 is near the brake pad support 201, and the other side 111 of the lower plate 109 is near the cylinder 23.

[0039] Specifically, the centers of the holes in the first lever fulcrum hole 103 and the second lever fulcrum hole 104 are located inside the extension line of the concave contour boundary line at the connection point between the concave side 110 of the upper plate 108 and the I-beam 107. The centers of the holes in the third lever fulcrum hole 105 and the fourth lever fulcrum hole 106 are located inside the extension line of the concave contour boundary line at the connection point between the concave side 110 of the lower plate 109 and the I-beam 107.

[0040] In one embodiment, the concave side 110 of the upper plate 108 is one side along the length of the upper plate 108, parallel to the axial direction of the train's wheel axle (i.e., perpendicular to the train's direction of travel). The width direction of the upper plate 108 is the train's direction of travel. The concave side 110 of the lower plate 109 is one side along the length of the lower plate 109, parallel to the axial direction of the train's wheel axle (i.e., perpendicular to the train's direction of travel). The width direction of the lower plate 109 is the train's direction of travel.

[0041] In one embodiment, both the concave side 110 of the upper plate 108 and the concave side 110 of the lower plate 109 are provided with transition fillets. These transition fillets can be large-sized fillets to avoid stress concentration caused by the output force of the cylinder 23. The other side 111 of the upper plate 108 and the other side 111 of the lower plate 109 are both planar.

[0042] In one embodiment, the main shaft hole 101 of the fixed main shaft sleeve 102 is fitted onto a rigid shaft. The fixed main shaft sleeve 102 is used to connect to the bogie via the rigid shaft. The fixed main shaft sleeve 102 has a cylindrical structure to facilitate the fixing of the brake caliper hanger 100 to the bogie via the rigid shaft. The axial direction of the fixed main shaft sleeve 102 is arranged along the length direction of the upper plate 108, that is, parallel to the axial direction of the train wheel axle.

[0043] Specifically, in actual machining, the outer ring of the fixed spindle sleeve 102, the I-beam 107, the upper plate 108, and the lower plate 109 can be integrally formed. The I-beam 107, the upper plate 108, and the lower plate 109 have the same thickness to ensure uniform stress distribution and good machinability of the brake caliper hanger components.

[0044] like Figure 1 As shown, the fixed spindle sleeve 102 is subjected to longitudinal impact stress, and the four lever fulcrum holes are subjected to transverse tensile stress.

[0045] This invention relates to a brake caliper hanger that uses carbon fiber as a composite material, achieving lightweight design and giving it characteristics of being lightweight, corrosion-resistant, and fatigue-resistant. This brake caliper hanger is suitable for both three-point and four-point suspension brake calipers. While meeting braking requirements, it achieves the goal of weight reduction and speed increase for high-speed trains. Furthermore, the I-beam-like structure, upper plate, and lower plate are set to have equal thickness to reduce internal stress. Considering the characteristics of composite materials, relevant modifications are made by completing the hollow parts of the upper plate, lower plate, and I-beam-like structure, avoiding the performance and stability degradation caused by openings in the composite material. The concave boundary of the upper and lower plates is set outside the center of the lever fulcrum hole, ensuring that the principal stress is tensile stress, thus avoiding the performance degradation caused by excessive bending moment at the lever fulcrum hole.

[0046] like Figure 2 As shown, the brake assembly structure 200 includes: brake disc 21, brake caliper 22, and cylinder 23.

[0047] The brake caliper 22 includes: two brake pad supports 201, two vertical rods 202, two brake lever bolts 203, two brake levers 204, a lifting rod 205, and a brake caliper hanger 100.

[0048] like Figure 3 As shown, each brake lever 204 includes two parallel plates 206 spaced apart vertically, and a connecting rod 207 connecting the two parallel plates 206. Each parallel plate 206 is provided with a first end ring 301, a second end ring 302, and an intermediate ring 303.

[0049] In one embodiment, one end of each parallel plate 206 in the brake lever 204 is connected to the cylinder 23, and the other end is pivotally connected to the brake pad support 201.

[0050] Specifically, two first end rings 301 are fitted onto the vertical rod 202 of a brake pad support 201, two intermediate rings 303 are fitted onto the brake lever bolt 203, and two second end rings 302 are respectively fitted onto the two ends of the connector 208 connected to the cylinder 23.

[0051] One end of the brake lever 204 is hinged to the brake pad support 201 via a vertical rod 202 as a pivot, giving the brake pad support 201 a certain degree of rotational freedom. Brake pads are mounted on the brake pad support 201, and each brake pad support 201 includes two top connecting rings 209. The bottom of the suspension rod 205 is inserted between the two top connecting rings 209 of the brake pad support 201 and pivotally connected via a corresponding pivot.

[0052] In one embodiment, the brake pad support 201 is used to clamp the brake disc 21. The axial direction of the top connecting ring 209 is horizontal. The brake caliper 22 is installed on the bogie of the EMU train in a three-point or four-point suspension manner through two suspension rods 205 connected to the upper ends of the two brake pad supports 201 and the fixed main shaft sleeve 102 of the brake caliper hanger 100.

[0053] Specifically, one brake lever bolt 203 passes through the first lever fulcrum hole 103, the third lever fulcrum hole 105 of the brake caliper hanger 100, and the two intermediate rings 303 of the brake lever 204, so that the brake lever 204 is pivotally connected to the brake caliper hanger 100. The other brake lever bolt 203 passes through the second lever fulcrum hole 2, the fourth lever fulcrum hole 106 of the brake caliper hanger 100, and the two intermediate rings 303 of the brake lever 204, so that the brake lever 204 is pivotally connected to the brake caliper hanger 100.

[0054] In one embodiment, the brake caliper hanger 100 is hinged to the two symmetrical brake levers 204 on the left and right sides by their corresponding brake lever bolts 203 as lever support pivots, so that the brake levers 204 can rotate.

[0055] One end of each parallel plate 206 in the brake lever 204 is fastened to the connecting piece 208 of the cylinder 23 by bolts 210.

[0056] In one embodiment, when the EMU train brakes, the connecting member 208 of the cylinder 23 moves outward along the axial direction of the EMU train's wheel axle, pushing the brake levers 204 on both sides, causing the brake levers 204 to move away from each other at the ends closest to the cylinder 23. The brake lever bolt 203, serving as the pivot and fulcrum of the brake lever 204, remains stationary. The two brake levers 204 move closer together at the ends furthest from the cylinder 23. During this process, the brake pads of the two brake pad supports 201 also move closer together and gradually press against the brake disc 21. This transmits the output force of the cylinder 23 to the brake disc 21. Through friction, the brake pads of the brake pad supports 201 and the brake disc 21 gradually reduce the speed of the EMU train's wheel axle mounted on the brake disc 21, thereby achieving braking of the EMU train.

[0057] In one embodiment, when the train stops braking, the cylinder 23 drives the connecting member 208 to move inward along the axial direction of the train's wheel axle via exhaust, i.e., the opposite direction of the braking process. The movement of the connecting member 208 pulls the two brake levers 204, causing the two brake levers 204 to move closer together at the end closest to the cylinder 23. The brake lever bolt 203, serving as the pivot and fulcrum of the brake lever 204, remains stationary. At the end of the two brake levers 204 furthest from the cylinder 23, they move away from each other. During this process, the brake pads of the two brake pad supports 201 also move away from each other, thus no longer clamping the brake disc 21, thereby stopping the train braking.

[0058] In one embodiment, during the braking process of the EMU train, the brake lever 204 transmits pressure to the two brake pad supports 201 through the vertical rod 202.

[0059] This invention relates to a brake caliper hanger that uses carbon fiber as a composite material, achieving a lightweight design and giving it characteristics of being lightweight, corrosion-resistant, and fatigue-resistant. Furthermore, this brake caliper hanger is suitable for both three-point and four-point brake calipers. While meeting braking requirements, it achieves the goal of weight reduction and speed increase for high-speed trains. By completing the hollowed-out sections of the I-beam-like structure, the performance degradation caused by openings in the composite material layers is avoided.

[0060] The above description is merely an illustrative embodiment of this utility model and is not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model.

Claims

1. A brake caliper hanger, applied to a brake assembly structure, characterized in that, include: An upper plate, a lower plate, and an I-beam-like structure disposed between the upper plate and the lower plate; The upper plate is provided with a fixed spindle sleeve; the upper plate is provided with a first lever fulcrum hole and a second lever fulcrum hole; the lower plate is provided with a third lever fulcrum hole and a fourth lever fulcrum hole; the first lever fulcrum hole and the third lever fulcrum hole are located in the same vertical direction, and the second lever fulcrum hole and the fourth lever fulcrum hole are located in the same vertical direction; wherein, the brake caliper hanger is made of carbon fiber composite material.

2. The brake caliper hanger according to claim 1, characterized in that, The spindle hole of the fixed spindle sleeve is fitted onto a rigid shaft; the first lever fulcrum hole and the third lever fulcrum hole are fitted onto one of the brake lever bolts of the brake assembly structure, and the second lever fulcrum hole and the fourth lever fulcrum hole are fitted onto the other brake lever bolt of the brake assembly structure.

3. The brake caliper hanger according to claim 1, characterized in that, The fixed spindle sleeve is subjected to longitudinal impact stress, and the four lever fulcrum holes are subjected to transverse tensile stress.

4. The brake caliper hanger according to claim 1, characterized in that, The I-beam, the upper plate, and the lower plate have the same thickness.

5. The brake caliper hanger according to claim 1, characterized in that, The outer ring of the fixed spindle sleeve is integrally formed with the upper plate, the I-beam, and the lower plate.

6. The brake caliper hanger according to claim 1, characterized in that, The centers of the holes of the first lever fulcrum hole and the second lever fulcrum hole are located inside the extension line of the concave contour boundary line connecting the upper plate and the I-beam.

7. The brake caliper hanger according to claim 1, characterized in that, The centers of the holes of the third and fourth lever fulcrum holes are located inside the extension line of the concave contour boundary line connecting the lower plate and the I-beam.

8. The brake caliper hanger according to claim 1, characterized in that, The first lever fulcrum hole and the second lever fulcrum hole are symmetrically arranged at both ends of the upper plate, close to the concave side of the upper plate; the third lever fulcrum hole and the fourth lever fulcrum hole are symmetrically arranged at both ends of the lower plate, close to the concave side of the upper plate.

9. A brake assembly structure, characterized in that, include: Brake disc, cylinder, two brake pad supports, two brake levers, two brake lever bolts, and brake caliper hanger as described in any one of claims 1-7; The brake lever includes: two parallel plates and a connecting rod connecting the two parallel plates. Each parallel plate is provided with a first end ring, a second end ring and an intermediate ring. The first end ring is sleeved on the vertical rod of the brake pad support, the intermediate ring is sleeved on the brake lever bolt, and the second end ring is respectively sleeved on both ends of the connecting piece connected to the cylinder. One of the brake lever bolts passes through the first lever fulcrum hole and the third lever fulcrum hole of the brake caliper hanger, and the other brake lever bolt passes through the second lever fulcrum hole and the fourth lever fulcrum hole of the brake caliper hanger; the brake pad holder is used to clamp the brake disc.

10. The brake assembly structure according to claim 9, characterized in that, Also includes: The boom is connected to the top connecting ring of the brake pad support by bolts.

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