Railway wagon swing bolster fixed lever fulcrum seat pitch measuring device and method

Abstract

The invention discloses a railway wagon swing bolster fixed lever fulcrum seat pitch measuring device and method, and belongs to the field of pitch measurement. The railway wagon swing bolster fixed lever fulcrum seat pitch measuring device comprises a main ruler body, and transverse measuring structures are symmetrically arranged at the two ends of the main ruler body; the transverse measuring structure is connected with the measuring wheel through the longitudinal measuring structure, positioning cones are symmetrically arranged at the two ends of the bottom of the main ruler body, and height adjusting elements used for height adjustment are symmetrically arranged at the two ends of the bottom of the main ruler body. According to the device and the method for measuring the pitch of the fixed lever fulcrum seat of the railway wagon swing bolster, the special measuring scale with positioning, transverse measurement and longitudinal measurement functions is designed, so that the device is light and easy to operate, and the cost is reduced while the measurement efficiency and the measurement precision are improved.

Description

Technical Field

[0001] This invention relates to the field of hole spacing measurement technology, and in particular to a device and method for measuring the hole spacing of a fixed lever fulcrum seat for railway freight car bolsters. Background Technology

[0002] The railway freight car bolster fixed lever fulcrum hole distance measuring device is a specialized measuring instrument used to measure the lateral and longitudinal hole distances from the center of the railway freight car bolster to the fixed lever fulcrum hole. The bolster is the core load-bearing component of the railway freight car bogie, and the fixed lever fulcrum holes (usually located on both sides of the bolster) are the reference points for installing the basic braking device levers. The position of these fulcrum hole holes (lateral and longitudinal distances) directly determines the installation angle and stroke of the brake lever, thus affecting the correct transmission and distribution of braking force.

[0003] Previously, measuring this specific hole distance (the lateral and longitudinal distance from the center to the fulcrum hole) mainly relied on general-purpose measuring tools. However, these tools can only measure point-to-point straight-line distances and cannot conveniently and accurately locate the bolster center (a virtual point) and the fulcrum hole center (a hole) simultaneously. This requires complex auxiliary positioning and multiple measurement calculations, resulting in extremely low efficiency and large accumulated errors. While using a coordinate measuring machine (CMM) offers higher accuracy, the equipment is expensive and bulky, limiting its use to specific workstations (such as laboratories or new manufacturing plants) and making it completely unsuitable for rapid measurements in routine maintenance sites or production lines. Summary of the Invention

[0004] The purpose of this invention is to provide a measuring device and method for measuring the distance between the fulcrum seat holes of the fixed lever of a railway freight car bolster. By designing a special measuring ruler with positioning, lateral measurement, and longitudinal measurement functions, it is lightweight and easy to operate, improving measurement efficiency and accuracy while reducing costs.

[0005] To achieve the above objectives, the present invention provides a measuring device and method for measuring the hole distance of the fixed lever seat of a railway freight car bolster, comprising a main scale body, with transverse measuring structures symmetrically arranged at both ends of the main scale body, the transverse measuring structures being connected to measuring wheels through longitudinal measuring structures, positioning cones symmetrically arranged at both ends of the bottom of the main scale body, and height adjustment elements for height adjustment symmetrically arranged at both ends of the bottom of the main scale body.

[0006] Preferably, the transverse measuring structure includes a transverse frame connected to the main scale body, a transverse measuring scale slidably disposed within the transverse frame, and a transverse locking screw for locking the transverse measuring scale within the transverse frame.

[0007] Preferably, both the upper and lower ends of the horizontal ruler frame are provided with horizontal sliding grooves, and the horizontal measuring ruler is inserted into the horizontal sliding grooves and slidably connected to the horizontal sliding grooves.

[0008] Preferably, the horizontal ruler frame and the horizontal measuring scale are provided with horizontal reading scales.

[0009] Preferably, the longitudinal measuring structure includes a connecting plate 1 that is perpendicularly connected to the transverse measuring scale. The connecting plate 1 is located at the end of the transverse measuring scale away from the main scale body. A longitudinal scale frame is provided at the end of the connecting plate 1 away from the transverse measuring scale. A longitudinal measuring scale is slidably arranged in the longitudinal scale frame. The longitudinal scale frame is provided with a longitudinal locking screw for locking the longitudinal measuring scale.

[0010] Preferably, longitudinal grooves are provided at both the upper and lower ends of the longitudinal ruler frame, and the longitudinal measuring ruler is inserted into the longitudinal grooves and slidably connected to the longitudinal grooves.

[0011] Preferably, the longitudinal ruler frame and the longitudinal measuring ruler are provided with longitudinal reading scales.

[0012] Preferably, a connecting plate two is vertically arranged at the end of the longitudinal measuring scale away from the main scale body, and a measuring wheel is arranged at the end of the connecting plate two away from the longitudinal measuring scale. The measuring wheel is rotatably connected to the connecting plate two through a rotating shaft.

[0013] Preferably, the top of the main scale body is provided with a handle for carrying and a spirit level, and the height adjustment element is a height adjustment screw.

[0014] This invention provides a method for measuring the distance between the fulcrum seat holes of a railway freight car bolster fixing lever, comprising the following steps:

[0015] Step 1: Carry the measuring device by the handle and move it to the bolster that needs to be measured;

[0016] Step 2: Insert the two positioning cones on the main scale of the measuring device into the two bolt holes on the bolster where the lower center plate is installed, adjust the two height adjustment screws, and center the bubble level.

[0017] Step 3: Simultaneously move the horizontal and vertical scales, insert the measuring wheel into the hole of the fixed lever fulcrum seat, so that the end face of the probe is in close contact with the surface of the lever fulcrum seat, and read the measured value from the horizontal and vertical reading scales.

[0018] Step 4: Read the measured value as the position dimension from the center of the fixed lever fulcrum seat hole to the center of the bolster.

[0019] Therefore, the present invention, employing the above-mentioned measuring device and method for measuring the distance between the fulcrum seat and the fixing lever of a railway freight car bolster, has the following beneficial effects:

[0020] 1. The measuring device is designed with two positioning cones. During measurement, these two cones are inserted into the center holes on both sides of the rocker arm to automatically locate the center of the hole being measured, thereby improving the positioning accuracy and avoiding the uncertainty and errors that can easily occur when manually finding the center of the hole.

[0021] 2. The measuring device is designed with two measuring wheels that contact the end face of the rocker arm. Combined with the rigid structure of the measuring device and the symmetrical design of the transverse and longitudinal measuring scales on both sides of the main scale, the center line of the measuring device is automatically determined and kept aligned with the center line of the rocker arm, thus establishing a physical reference for the center line of the rocker arm. The rotation of the measuring wheels is suitable for workpieces with different angular deviations, and the measurement conforms to the parameter definition.

[0022] 3. The measuring device is designed with a spirit level and two height adjustment screws to ensure that the positioning cone is accurately positioned on the horizontal working plane (hole center height) when the measuring device is placed on different bolsters or uneven surfaces, ensuring that the horizontal projected distance is measured and further improving the measurement accuracy;

[0023] 4. The entire measuring device is designed to be relatively portable and handheld, specifically optimized for this particular measurement task on the bolster, making it suitable for use on production lines and maintenance sites, and significantly improving efficiency.

[0024] 5. This invention integrates the functions of measuring transverse hole distance (distance from the center of the bolster to the hole of the single-sided support) and longitudinal hole distance (distance between the holes of the two supports) into a single measuring device, further improving the efficiency of measurement.

[0025] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0026] Figure 1 This is a front view of an embodiment of the railway freight car bolster fixing lever fulcrum seat hole distance measuring device of the present invention;

[0027] Figure 2 This is a top view of an embodiment of the railway freight car bolster fixing lever fulcrum hole distance measuring device of the present invention;

[0028] Figure 3 This is a schematic diagram of the longitudinal measurement structure of an embodiment of the railway freight car bolster fixed lever fulcrum seat hole distance measuring device of the present invention;

[0029] Figure 4 This is an installation schematic diagram of an embodiment of the railway freight car bolster fixing lever fulcrum hole distance measuring device of the present invention.

[0030] Figure Labels

[0031] 1. Main scale body; 2. Positioning cone; 3. Height adjustment screw; 4. Horizontal scale frame; 5. Horizontal measuring scale; 6. Horizontal locking screw; 7. Longitudinal scale frame; 8. Longitudinal measuring scale; 9. Longitudinal locking bolt; 10. Measuring wheel; 11. Rotating shaft; 12. Connecting plate one; 13. Connecting plate two; 14. Handle; 15. Spirit level. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages disclosed in the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the embodiments of the present invention and are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0033] It should be noted that the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products, or devices.

[0034] Similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use. They are only for the convenience of describing this invention and simplifying the description, and 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. Therefore, they should not be construed as limiting this invention.

[0036] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] Example

[0038] like Figure 1 , Figure 2 , Figure 3 As shown, the present invention relates to a measuring device and method for measuring the distance between the fulcrum seat holes of a railway freight car bolster fixing lever, comprising a main scale body 1, wherein two positioning cones 2 are symmetrically arranged at both ends of the bottom of the main scale body 1. Figure 1Two positioning cones 2 are located at the left and right ends of the bottom of the main scale body 1, respectively. Symmetrical height adjustment elements for height adjustment are provided at both ends of the bottom of the main scale body 1; the height adjustment elements are height adjustment screws 3. Figure 1 Two height adjustment screws 3 are located at the bottom left and right ends of the main scale body 1, respectively. The height can be adjusted by rotating the height adjustment screws 3. The top of the main scale body 1 is provided with a handle 14 and a spirit level 15 for carrying. The handle 15 is used to carry and move the entire measuring device.

[0039] Two transverse measuring structures are symmetrically arranged at both ends of the main scale body 1. Each transverse measuring structure includes a transverse frame 4 connected to the main scale body 1, within which a transverse measuring scale 5 is slidably mounted. The transverse frame 4 is equipped with transverse locking screws 6 for securing the transverse measuring scale 5. Transverse grooves are provided at both the top and bottom ends of the transverse frame 4, and the transverse measuring scale 5 is inserted into and slidably connected to these grooves. The transverse measuring scale 5 is secured by rotating the transverse locking screws 6, preventing it from sliding within the transverse frame 4. Transverse reading scales are provided on both the transverse frame 4 and the transverse measuring scale 5.

[0040] The transverse measuring structure is connected to the measuring wheel 10 via the longitudinal measuring structure. The longitudinal measuring structure includes a connecting plate 12 connected to the transverse measuring scale 5, located at the end of the transverse measuring scale 5 furthest from the main scale body 1. The end of the connecting plate 12 furthest from the transverse measuring scale 5 is connected to the longitudinal scale frame 7. A longitudinal measuring scale 8 is slidably mounted within the longitudinal scale frame 7, and the longitudinal scale frame 7 is equipped with a longitudinal locking screw 9 for locking the longitudinal measuring scale 8. Both the upper and lower ends of the longitudinal scale frame 7 are provided with longitudinal grooves, and the longitudinal measuring scale 8 is inserted into and slidably connected to the longitudinal grooves. By rotating the longitudinal locking screw 9 to tighten the screw, the longitudinal measuring scale 8 is locked, preventing it from sliding within the longitudinal scale frame 7. The longitudinal scale frame 7 and the longitudinal measuring scale 8 are provided with longitudinal reading graduations.

[0041] A connecting plate 13 is vertically installed at the end of the longitudinal measuring scale 8 away from the main scale body 1. The measuring wheel 10 is installed at the end of the connecting plate 13 away from the longitudinal measuring scale 8. The measuring wheel 10 is rotatably connected to the connecting plate 13 through a rotating shaft 11. The rotating shaft can rotate on the connecting plate 13, thereby driving the measuring wheel to rotate.

[0042] The main technical parameters of the measuring device used in this invention are shown in Table 1:

[0043] Table 1 Technical Specifications

[0044] Measurement range (mm) graduation value (mm) Indication error (mm) 330-360mm horizontal 0.02 ≤±0.2 Longitudinal 335-355mm 0.02 ≤±0.2

[0045] like Figure 4 As shown, the present invention provides a method for measuring the distance between the fulcrum seat holes of the fixed lever of a railway freight car bolster, comprising the following steps:

[0046] Step 1: Use the handle 14 to move the measuring device to the bolster that needs to be measured;

[0047] Step 2: Insert the two positioning cones 2 on the main scale body 1 of the measuring device into the two bolt holes on the rocker arm where the lower center plate is installed, adjust the two height adjusting screws 3, and center the bubble level 15.

[0048] Step 3: Simultaneously move the horizontal and vertical scales, insert the measuring wheel (which can be flipped) into the hole of the fixed lever fulcrum seat, so that the end face of the probe is in close contact with the surface of the lever fulcrum seat, and read the measured value from the horizontal and vertical reading scales.

[0049] Step 4: Read the measured value as the position dimension from the center of the fixed lever fulcrum seat hole to the center of the bolster.

[0050] Therefore, the present invention adopts the above-mentioned railway freight car bolster fixing lever fulcrum seat hole distance measuring device and method. By designing a special measuring ruler with positioning, lateral measurement and longitudinal measurement functions, it is lightweight and easy to operate, improving measurement efficiency and accuracy while reducing costs.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A device for measuring the distance between the fulcrum seat and the fixed lever of a railway freight car bolster, characterized in that: It includes a main scale body, with symmetrically arranged transverse measuring structures at both ends of the main scale body. The transverse measuring structures are connected to the measuring wheels through the longitudinal measuring structures. The bottom of the main scale body has symmetrically arranged positioning cones at both ends, and height adjustment elements for height adjustment are symmetrically arranged at both ends of the bottom of the main scale body.

2. The railway freight car bolster fixing lever fulcrum seat hole distance measuring device according to claim 1, characterized in that: The transverse measuring structure includes a transverse frame connected to the main scale body, a transverse measuring scale slidably disposed within the transverse frame, and a transverse locking screw for locking the transverse measuring scale within the transverse frame.

3. The railway freight car bolster fixing lever fulcrum seat hole distance measuring device according to claim 2, characterized in that: Both the upper and lower ends of the horizontal ruler frame are provided with horizontal sliding grooves, and the horizontal measuring ruler is inserted into the horizontal sliding grooves and slidably connected to the horizontal sliding grooves.

4. The railway freight car bolster fixing lever fulcrum seat hole distance measuring device according to claim 2, characterized in that: The horizontal ruler frame and the horizontal measuring scale are equipped with horizontal reading scales.

5. The railway freight car bolster fixing lever fulcrum seat hole distance measuring device according to claim 2, characterized in that: The longitudinal measuring structure includes a connecting plate 1 that is perpendicularly connected to the transverse measuring scale. The connecting plate 1 is located at the end of the transverse measuring scale away from the main scale body. A longitudinal scale frame is provided at the end of the connecting plate 1 away from the transverse measuring scale. A longitudinal measuring scale is slidably arranged inside the longitudinal scale frame. The longitudinal scale frame is provided with a longitudinal locking screw for locking the longitudinal measuring scale.

6. The railway freight car bolster fixing lever fulcrum seat hole distance measuring device according to claim 5, characterized in that: Both the upper and lower ends of the longitudinal ruler frame are provided with longitudinal grooves, and the longitudinal measuring ruler is inserted into the longitudinal grooves and slidably connected to the longitudinal grooves.

7. The railway freight car bolster fixing lever fulcrum seat hole distance measuring device according to claim 5, characterized in that: The longitudinal ruler frame and longitudinal measuring scale are equipped with longitudinal reading scales.

8. The railway freight car bolster fixing lever fulcrum seat hole distance measuring device according to claim 5, characterized in that: A connecting plate two is vertically installed at the end of the longitudinal measuring scale away from the main scale body. The measuring wheel is installed at the end of the connecting plate two away from the longitudinal measuring scale. The measuring wheel is rotatably connected to the connecting plate two through a rotating shaft.

9. The railway freight car bolster fixing lever fulcrum seat hole distance measuring device according to claim 1, characterized in that: The top of the main scale is equipped with a handle for carrying and a spirit level, and the height adjustment element is a height adjustment screw.

10. A method for measuring the distance between the fulcrum seat holes of a railway freight car bolster fixing lever according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Carry the measuring device by the handle and move it to the bolster that needs to be measured; Step 2: Insert the two positioning cones on the main scale of the measuring device into the two bolt holes on the bolster where the lower center plate is installed, adjust the two height adjustment screws, and center the bubble level. Step 3: Simultaneously move the horizontal and vertical scales, insert the measuring wheel into the hole of the fixed lever fulcrum seat, so that the end face of the probe is in close contact with the surface of the lever fulcrum seat, and read the measured value from the horizontal and vertical reading scales. Step 4: Read the measured value as the position dimension from the center of the fixed lever fulcrum seat hole to the center of the bolster.

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