Force measuring brake head, brake shoe pressure measuring device and railway vehicle

Abstract

The utility model provides a force measuring brake shoe holder, a brake shoe pressure measuring device and a railway vehicle, the force measuring brake shoe holder comprises a holder body, the holder body is provided with an inner wall surface and an outer wall surface which are oppositely arranged in the thickness direction of the holder body, and the inner wall surface is provided with a brake shoe slot; the brake shoe bolt is movably arranged in the support body and the brake shoe slot in a penetrating manner along the length direction of the brake shoe support; the at least two force measuring sensors are arranged on the supporting body, the force measuring sensors are arranged on the two sides, in the width direction of the supporting body, of the brake shoe bolt, and the force measuring sensors protrude out of the inner side wall. Through the technical scheme provided by the invention, the problem that the mounting mode of the force transducer in the related technology is not suitable for detecting the dynamic brake shoe pressure can be solved.

Description

Technical Field

[0001] This utility model relates to the field of railway freight car technology, specifically to a force-measuring brake shoe holder, a brake shoe pressure measuring device, and a railway vehicle. Background Technology

[0002] With the development of railway transportation towards heavy-haul and high-speed operations, 10,000-ton heavy-haul combined trains have become an important component of railway transportation. However, the enormous coupler forces and longitudinal impulses generated by heavy-haul trains during operation pose a severe challenge to the structural safety and operational stability of railway vehicles. Coupler force is the key force connecting vehicles; excessive or insufficient coupler force can damage vehicle connecting components and even lead to serious accidents such as train derailment. To ensure the safety and efficiency of train operation, in-depth research into the influence of braking system performance on coupler force and the development of onboard intelligent monitoring systems have become current research hotspots in the field of railway transportation.

[0003] In related technologies, monitoring the performance of railway vehicle braking systems and coupler forces primarily relies on static testing methods. For example, static brake shoe pressure is detected by installing clamps on the brake shoes and force sensors on those clamps. This testing method can reflect the static performance of the braking system to some extent.

[0004] However, the main challenge of dynamic monitoring lies in the randomness and irregularity of brake shoe wear. During frequent train starts, braking, acceleration, and deceleration, the contact between the brake shoes and the wheel tread changes, leading to dynamic variations in brake shoe pressure. Furthermore, because brake shoe wear is typically randomly distributed and can occur unevenly in some cases, the brake shoes have an irregular shape. This irregular shape, coupled with the contact changes under dynamic operating conditions, makes it difficult for the force sensors used in related technologies to accurately reflect the true dynamic brake shoe pressure. Consequently, it is impossible to effectively monitor dynamic coupler force and longitudinal impulse, thus limiting the comprehensive assessment and control of the safety and efficiency of heavy-haul train operations. Utility Model Content

[0005] This invention provides a force-measuring brake shoe holder, a brake shoe pressure measuring device, and a railway vehicle to solve the problem that the installation method of the force sensor in related technologies is not suitable for detecting dynamic brake shoe pressure.

[0006] According to one aspect of the present invention, a force-measuring brake shoe support is provided, comprising: a support body having an inner wall surface and an outer wall surface disposed opposite to each other in the thickness direction, wherein a brake shoe slot is provided on the inner wall surface; a brake shoe pin movably inserted through the support body and the brake shoe slot along the length direction of the brake shoe support; and at least two force sensors disposed on the support body, wherein force sensors are provided on both sides of the brake shoe pin in the width direction of the support body, and the force sensors protrude from the inner wall surface.

[0007] Furthermore, the at least two force sensors include two sets of force sensors, which are respectively arranged on both sides of the brake shoe pin in the width direction of the support body. Each set of force sensors includes at least two force sensors arranged along the length direction of the support body.

[0008] Furthermore, the two sets of force sensors are staggered along the length of the support; and / or, at least two force sensors are symmetrically arranged with the center of symmetry of the inner wall surface as the center point.

[0009] Furthermore, the force-measuring brake shoe also includes a sensor base, which is mounted on the support body. The end of the sensor base facing away from the outer wall is provided with a mounting hole, and the force sensor is installed in the mounting hole.

[0010] Furthermore, the force-measuring brake pad also includes a reinforcing support block disposed between the pad and the sensor base, the reinforcing support block being located on the side of the sensor base facing the outer wall; and / or, the diameter of the mounting hole is between 20mm and 22mm.

[0011] Furthermore, the force-measuring brake shoe also includes reinforcing ribs, which are set on both sides of the support body in the width direction. The support body, reinforcing ribs, reinforcing blocks and sensor base are formed by an integral casting process.

[0012] Furthermore, the extension direction of each force sensor intersects the axis of the support; and / or, the force sensor protrudes from the inner wall surface by a dimension between 3 mm and 5 mm.

[0013] Furthermore, the support body has a sliding lug on one side in its width direction; and / or, the outer wall surface has a through hole that communicates with the sensor base.

[0014] According to another aspect of the present invention, a brake shoe pressure measuring device is provided, which includes the force-measuring brake shoe support provided above.

[0015] According to another aspect of the present invention, a railway vehicle is provided, which includes the force-measuring brake pads provided above.

[0016] The present invention provides a force-measuring brake shoe support comprising a support body, a brake shoe pin, and at least two force sensors. The brake shoe is disposed on the inner side of the support body. During train braking, the support body approaches the wheel so that the brake shoe abuts against the wheel. At this time, the dynamic braking force applied by the wheel to the brake shoe is equal to the force applied by the brake shoe to the support body. By disposing of the force sensors on the support body and having the force sensors protrude from the inner wall surface, the force applied by the brake shoe to the support body can be detected by the force sensors, thereby indirectly detecting the dynamic braking force applied by the wheel to the brake shoe. The design utilizes brake shoe pins to connect the brake shoe and the support body. By installing force sensors on both sides of the brake shoe pin in the width direction of the brake shoe support, the placement of the force sensors avoids the movement path of the brake shoe pin and ensures that the mounting position of the force sensors does not interfere with the brake shoe pin. This reduces structural modifications to the support body while preserving the existing connection structure between the support body and the brake shoe. It also preserves the actual fit between the brake shoe pin, brake shoe, and brake shoe support, allowing the force sensor's detection results to better reflect the dynamic brake shoe pressure in the actual application environment. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the force-measuring brake shoe provided according to an embodiment of the present invention is shown;

[0019] Figure 2 A structural schematic diagram of the force-measuring brake pad provided according to an embodiment of the present invention is shown from another perspective;

[0020] Figure 3 A schematic diagram of the structure of the force-measuring brake shoe holder installed on the brake beam according to an embodiment of the present invention is shown;

[0021] The above figures include the following reference numerals:

[0022] 10. Sensor base; 11. Mounting hole;

[0023] 20. Support body; 21. Inner wall surface; 211. Brake shoe slot; 22. Outer wall surface; 221. Pipe; 23. Sliding lug;

[0024] 30. Reinforcing support block; 40. Reinforcing rib; 50. Braking beam. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] like Figures 1 to 3 As shown, this utility model embodiment provides a force-measuring brake shoe support, which includes a support body 20, a brake shoe pin, and at least two force sensors. The support body 20 has an inner wall surface 21 and an outer wall surface 22 that are arranged opposite to each other in its thickness direction. A brake shoe slot 211 is provided on the inner wall surface 21. The brake shoe pin is movably inserted through the support body 20 and the brake shoe slot 211 along the length direction of the brake shoe support. At least two force sensors are provided on the support body 20. Force sensors are provided on both sides of the brake shoe pin in the width direction of the support body 20, and the force sensors protrude from the inner wall surface 21.

[0027] The force-measuring brake shoe holder provided in this embodiment includes a holder body 20, a brake shoe pin, and at least two force sensors. The brake shoe is disposed inside the holder body 20. During train braking, the holder body 20 approaches the wheel so that the brake shoe abuts against the wheel. At this time, the dynamic braking force applied by the wheel to the brake shoe is equal to the force applied by the brake shoe to the holder body 20. By placing the force sensor on the holder body 20 and having the force sensor protrude from the inner wall surface 21, the force sensor can detect the force applied by the brake shoe to the holder body 20, thereby indirectly detecting the dynamic braking force applied by the wheel to the brake shoe. Specifically, the brake shoe and the support body 20 are connected by a brake shoe pin. Force sensors are installed on both sides of the brake shoe pin in the width direction of the support body 20. The installation position of the force sensors can avoid the brake shoe pin and its movement path, so that the position of the force sensor mounting base does not interfere with the brake shoe pin. This reduces the structural changes to the support body 20 and retains the existing connection structure between the support body 20 and the brake shoe. It also retains the cooperation relationship between the brake shoe pin, the brake shoe and the brake shoe support in actual application, so that the detection results of the force sensor can better reflect the dynamic brake shoe pressure in the actual application environment.

[0028] Specifically, a connecting block is provided on the side of the brake shoe facing the support body 20. The connecting block is inserted into the brake shoe slot 211, and the brake shoe pin passes through the support body 20 and the connecting block, thereby connecting the brake shoe and the support body 20 using the brake shoe pin. By adopting the above connection structure, the matching relationship between the brake shoe pin, brake shoe, and brake shoe support in actual applications is retained, so that the detection results of the force sensor can better reflect the dynamic brake shoe pressure in the actual application environment.

[0029] Furthermore, the size of the brake shoe is consistent with the size of the brake shoe in actual application, and the size of the brake shoe pin is consistent with the size of the brake shoe pin in actual application, which makes it easy to install the force measuring brake shoe bracket with the brake shoe in actual application. Moreover, the force measuring brake shoe bracket can be repeatedly disassembled and assembled to install multiple brake shoes in actual application, with good repeatability.

[0030] It should be noted that the brake shoe holder is a key component of the braking system. The brake shoe holder is used to support and fix the brake shoes to ensure that the brake shoes can properly contact the wheel and perform braking.

[0031] In this embodiment, the at least two force sensors include two sets of force sensors, which are respectively arranged on both sides of the brake shoe pin in the width direction of the brake shoe support. Each set of force sensors includes at least two force sensors arranged along the length direction of the support body 20. With this arrangement, the at least two force sensors can effectively transmit positive pressure in the length direction of the support body 20 during braking, improving detection accuracy. Furthermore, it improves the force balance between the two sets of force sensors on both sides of the brake shoe pin in the width direction of the support body 20, preventing the brake shoe from tilting relative to the support body 20.

[0032] In this embodiment, two sets of force sensors are staggered along the length of the support body 20. This arrangement of at least two force sensors further ensures that, during braking, the positive pressure is effectively transmitted by both sensors, improving detection accuracy.

[0033] In this embodiment, at least two force sensors are arranged symmetrically with respect to the center of symmetry of the inner wall surface 21. This arrangement further ensures that the forces acting on the at least two force sensors are balanced during braking.

[0034] like Figure 1 and Figure 2 As shown, the force-measuring brake shoe holder also includes a sensor base 10, which is mounted on the support body 20. A mounting hole 11 is provided at the end of the sensor base 10 facing away from the outer wall surface 22, and the force sensor is mounted inside the mounting hole 11. By providing the sensor base 10 and mounting the force sensor inside the mounting hole 11 of the sensor base 10, the force sensor can be installed accurately while the sensor base 10 protects the force sensor.

[0035] like Figure 1 As shown, the force-measuring brake pad also includes a reinforcing support block 30 disposed between the support body 20 and the sensor base 10. The reinforcing support block 30 is located on the side of the sensor base 10 facing the outer wall surface 22. By providing the reinforcing support block 30, the connection reliability between the support body 20 and the sensor base 10 is improved.

[0036] The diameter of the mounting hole 11 is between 20mm and 22mm. Specifically, in this embodiment, the diameter of the mounting hole 11 is 21mm.

[0037] like Figure 1 As shown, the force-measuring brake shoe holder also includes reinforcing ribs 40. The reinforcing ribs 40 are arranged on both sides of the support body 20 in the width direction. The support body 20, reinforcing ribs 40, reinforcing support blocks 30 and sensor base 10 are formed by integral casting process, which simplifies the processing process, improves the connection reliability of the support body 20, reinforcing ribs 40, reinforcing support blocks 30 and sensor base 10, and improves the structural strength of the force-measuring brake shoe holder.

[0038] In this embodiment, the extension direction of each force sensor intersects the axis of the support body 20. The force sensor can measure the radial pressure along the radial direction of the wheel corresponding to the support body 20, so that at least two force sensors can effectively transmit positive pressure.

[0039] The axis of the support body 20 refers to the intersection of the plane of symmetry of the support body 20 in its width direction and the axis of the wheel corresponding to the support body 20.

[0040] In this embodiment, the force sensor protrudes from the inner wall surface 21 by a size between 3mm and 5mm, thereby ensuring that the force sensor can effectively transmit the pressure between the brake shoe and the support body 20.

[0041] like Figure 1 and Figure 2 As shown, the support body 20 has a sliding lug 23 on one side in its width direction. As the force measuring brake shoe moves closer to or away from the wheel, the sliding lug 23 cooperates with the groove in the measuring environment to form a sliding guide, thereby guiding the movement of the force measuring brake shoe.

[0042] like Figure 1 and Figure 2 As shown, the outer wall surface 22 is provided with a lead hole 221 that communicates with the sensor base 10. The wire of the force sensor is led out from the lead hole 221. When the force sensor shoe moves closer to or away from the wheel, the wire is prevented from interfering with the external structure, thus avoiding damage to the wire and extending its service life.

[0043] Another embodiment of this utility model provides a brake shoe pressure measuring device, which includes the force-measuring brake shoe support provided above. Using the brake shoe pressure measuring device provided in this embodiment, the brake shoe is placed inside the support body 20. When measuring the brake shoe pressure, the support body 20 is close to the wheel so that the brake shoe abuts against the wheel. At this time, the dynamic braking force applied by the wheel to the brake shoe is equal to the force applied by the brake shoe to the support body 20. By placing a force sensor on the support body 20, and having the force sensor protrude from the inner wall surface 21, the force sensor can detect the force applied by the brake shoe to the support body 20, thereby indirectly detecting the dynamic braking force applied by the wheel to the brake shoe.

[0044] Specifically, the brake shoe and the support body 20 are connected by a brake shoe pin. Force sensors are installed on both sides of the brake shoe pin in the width direction of the support body 20. The installation position of the force sensors can avoid the brake shoe pin and its movement path, so that the position of the force sensor mounting base does not interfere with the brake shoe pin. This reduces the structural changes to the support body 20 and retains the existing connection structure between the support body 20 and the brake shoe. It also retains the cooperation relationship between the brake shoe pin, the brake shoe and the brake shoe support in actual application, so that the detection results of the force sensor can better reflect the dynamic brake shoe pressure in the actual application environment.

[0045] Specifically, such as Figure 3 As shown, the brake shoe pressure measuring device also includes a base, a wheelset support, a wheelset, a brake beam 50, brake shoes, a push rod, and a brake cylinder. The wheelset support is mounted on the base, and the wheelset is rotatably mounted on the wheelset support. The brake cylinder is mounted on the base and driven by the push rod. The push rod is driven by the brake beam 50. The extension direction of the brake beam 50 is parallel to the axis of the wheelset, and the movement direction of the brake beam 50 is perpendicular to the axis of the wheelset. The force-measuring brake shoe support is mounted on the side of the brake beam facing the wheelset, and the brake shoes are mounted on the side of the force-measuring brake shoe support facing the wheelset (i.e., the inner wall surface 21). The brake cylinder drives the push rod, brake beam 50, brake shoes, and force-measuring brake shoe support to move closer to or away from the wheelset.

[0046] Another embodiment of this utility model provides a railway vehicle, which includes the force-measuring brake shoe support provided above. Using the railway vehicle provided in this embodiment, the brake shoes are disposed inside the support body 20. When the railway vehicle brakes, the support body 20 approaches the wheel so that the brake shoes abut against the wheel. At this time, the dynamic braking force applied by the wheel to the brake shoes is equal to the force applied by the brake shoes to the support body 20. By disposing of a force sensor on the support body 20, with the force sensor protruding from the inner wall surface 21, the force sensor can detect the force applied by the brake shoes to the support body 20, thereby indirectly detecting the dynamic braking force applied by the wheel to the brake shoes.

[0047] Specifically, the brake shoe and the support body 20 are connected by a brake shoe pin. Force sensors are installed on both sides of the brake shoe pin in the width direction of the support body 20. The installation position of the force sensors can avoid the brake shoe pin and its movement path, so that the position of the force sensor mounting base does not interfere with the brake shoe pin. This reduces the structural changes to the support body 20 and retains the existing connection structure between the support body 20 and the brake shoe. It also retains the cooperation relationship between the brake shoe pin, the brake shoe and the brake shoe support in actual application, so that the detection results of the force sensor can better reflect the dynamic brake shoe pressure in the actual application environment.

[0048] Specifically, the brake shoe holder provided above can be used to measure the radial normal pressure of the brake shoe on the wheel when the railway vehicle is stationary or in motion, with high measurement accuracy.

[0049] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0050] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0051] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0052] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0053] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0054] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A force testing shoe plate, characterized in that, The force measuring brake block includes: a bracket body (20) having an inner wall surface (21) and an outer wall surface (22) oppositely arranged in a thickness direction of the bracket body (20), the inner wall surface (21) being provided with a brake shoe slot (211); a brake shoe bolt movably penetrating the bracket body (20) and the brake shoe slot (211) in a length direction of the brake block; at least two force sensors arranged on the bracket body (20), the force sensors being arranged on both sides of the brake shoe bolt in a width direction of the bracket body (20) and protruding from the inner wall surface (21).

2. The force testing brake shoe plate according to claim 1, wherein, The at least two force sensors include two groups of force sensors, each group of force sensors being arranged on both sides of the brake shoe bolt in the width direction of the bracket body (20) and including at least two force sensors arranged in the length direction of the bracket body (20).

3. The force measuring brake block according to claim 2, wherein the two groups of force sensors are arranged in a staggered manner in the length direction of the bracket body (20); and / or the at least two force sensors are arranged in a central symmetry manner with the center of the inner wall surface (21) as a center point.

4. The force modulator brake shoe according to claim 1, wherein The force measuring brake block further includes a sensor seat (10) arranged on the bracket body (20), an end of the sensor seat (10) away from the outer wall surface (22) being provided with a mounting hole (11), and the force sensors being arranged in the mounting hole (11).

5. The force measuring brake block according to claim 4, wherein the force measuring brake block further includes a reinforcing support block (30) arranged between the bracket body (20) and the sensor seat (10), the reinforcing support block (30) being located on a side of the sensor seat (10) facing the outer wall surface (22); and / or a hole diameter of the mounting hole (11) is between 20 mm and 22 mm.

6. The force modulator brake shoe according to claim 5, wherein, The force measuring brake block further includes reinforcing ribs (40) arranged on both sides of the bracket body (20) in the width direction of the bracket body (20), and the bracket body (20), the reinforcing ribs (40), the reinforcing support block (30) and the sensor seat (10) are formed by an integral casting process.

7. The force measuring brake block according to claim 1, wherein an extension direction of each force sensor intersects an axis of the bracket body (20); and / or a protruding size of the force sensors from the inner wall surface (21) is between 3 mm and 5 mm.

8. The force measuring brake block according to claim 4, wherein a slide lug (23) is arranged on one side of the bracket body (20) in the width direction of the bracket body (20); and / or the outer wall surface (22) is provided with a lead hole (221) in communication with the sensor seat (10).

9. A brake shoe pressure measuring device characterized by comprising: The brake shoe pressure measuring device includes the force measuring brake block according to any one of claims 1 to 8.

10. A railway vehicle characterized by The railway vehicle includes the force measuring brake block according to any one of claims 1 to 8.

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