JC series side bearing body vertical rigidity test tool

Abstract

The invention provides a JC series side bearing body vertical rigidity test tool. The JC series side bearing body vertical rigidity test tool comprises a base, two side plates are symmetrically and fixedly installed at the top of the base, inclined pressing blocks are arranged on the sides, close to each other, of the two side plates, side bearing body fixing bases are arranged below the inclined pressing blocks, the same side bearing body cushion block is arranged between the two side bearing body fixing bases, and the side bearing body cushion block is arranged between the two side bearing body fixing bases. And the bottom of the side bearing body cushion block extends into the base. The JC series side bearing body vertical rigidity test tool provided by the invention has the advantages of simplified structure, convenience in disassembly and assembly and high universality.

Description

Technical Field

[0001] This invention relates to the field of railway vehicle component testing technology, and in particular to a JC series side bearing vertical stiffness testing fixture. Background Technology

[0002] Side bearings are key components of railway vehicle bogies, and their vertical stiffness directly affects the vehicle's running stability. While existing dynamic and static testing fixtures for side bearings can perform the testing, they have significant drawbacks: Complex structure: The tooling has a large number of parts, requiring a long time to assemble and install before the experiment, resulting in low efficiency.

[0003] Difficult to install and disassemble: Traditional tooling relies on screw tightening, which makes the installation and disassembly process cumbersome and prone to loosening during testing, affecting the accuracy and safety of the test.

[0004] Poor versatility: Different series of side bearings (such as JC, JC-1, JC-2, JC-3 series, etc.) require special tooling, and the tooling cannot be interchanged, resulting in equipment redundancy and increased costs.

[0005] Therefore, it is necessary to provide a new JC series side bearing vertical stiffness testing fixture to solve the above-mentioned technical problems. Summary of the Invention

[0006] The technical problem solved by this invention is to provide a JC series side bearing vertical stiffness testing fixture that is structurally simplified, easy to assemble and disassemble, and highly versatile.

[0007] To solve the above-mentioned technical problems, the JC series side bearing vertical stiffness test fixture provided by the present invention includes: a base, two side plates are symmetrically fixedly installed on the top of the base, and inclined pressure blocks are provided on the side of the two side plates that are close to each other. A side bearing fixing seat is provided below the inclined pressure block, and a same side bearing pad is provided between the two side bearing fixing seats. The bottom of the side bearing pad extends into the base.

[0008] Preferably, the side plate is provided with bolts, and the side support fixing seat is fixedly connected to the side plate by bolts.

[0009] Preferably, the side support fixing seat has a threaded groove, the side plate has a mounting hole, the bolt passes through the mounting hole and extends into the threaded groove, and a washer and a spring are sleeved on the outside of the bolt, with the two ends of the spring contacting the inner wall of the mounting hole and the washer, respectively.

[0010] Preferably, the inclined pressure block has a strip-shaped through hole, and the bolt passes through the strip-shaped through hole.

[0011] Preferably, the side plate is provided with a pin, which passes through the side plate and extends into the inclined pressure block.

[0012] Preferably, the side support pad includes a first bearing plate and a positioning frame, wherein the positioning frame is fixedly installed on the top of the first bearing plate.

[0013] Preferably, the side support pad includes a second support plate, two positioning strips, and a positioning protrusion. The two positioning strips are fixedly installed on the top of the second support plate, and the positioning protrusion is fixedly installed on the top of the second support plate, with the positioning protrusion located between the two positioning strips.

[0014] Compared with related technologies, the JC series side bearing vertical stiffness testing fixture provided by this invention has the following beneficial effects: This invention provides a JC series side bearing vertical stiffness testing fixture. The modular design improves versatility: by replacing different side bearing pads, the fixture can be applied to various JC series side bearings, reducing the types of fixtures, lowering costs and storage space. Easy and efficient assembly and disassembly: The connection mechanism consisting of bolts, springs and washers replaces the traditional screw tightening method. During installation, simply insert the bolt and compress the spring to fix it. Disassembly is done in reverse, which saves a lot of time. The elastic compression of the spring effectively prevents loosening during testing. Simplified and stable structure: The number of parts is reduced, and the overall structure is compact; the design of pins and strip-shaped through holes enhances adjustment flexibility and vibration resistance, ensuring accurate and reliable test data. Attached Figure Description

[0015] Figure 1 A schematic diagram of a structural embodiment of the JC series side bearing vertical stiffness testing fixture provided by the present invention; Figure 2 for Figure 1 A structural schematic diagram from another perspective is shown; Figure 3 for Figure 1 The diagram shows the exploded structure. Figure 4 for Figure 3 A structural schematic diagram from another perspective is shown; Figure 5 A schematic diagram of another embodiment of the JC series side bearing vertical stiffness testing fixture provided by the present invention; Figure 6 for Figure 5 A structural schematic diagram from another perspective is shown; Figure 7 for Figure 5 The diagram shows the exploded structure. Figure 8 for Figure 7 A structural schematic diagram from another perspective is shown.

[0016] The following are the labels in the diagram: 1. Base, 2. Side plate, 3. Inclined pressure block, 4. Side support fixing seat, 5. Side support pad, 51a. Bearing plate one, 52a. Positioning frame, 51b. Bearing plate two, 52b. Positioning strip, 53b. Positioning protrusion, 6. Bolt, 7. Threaded groove, 8. Washer, 9. Spring, 10. Mounting hole, 11. Strip through hole, 12. Pin. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Please refer to the following: Figure 1-8 ,in, Figure 1 A schematic diagram of a structural embodiment of the JC series side bearing vertical stiffness testing fixture provided by the present invention; Figure 2 for Figure 1 A structural schematic diagram from another perspective is shown; Figure 3 for Figure 1 The diagram shows the exploded structure. Figure 4 for Figure 3 A structural schematic diagram from another perspective is shown; Figure 5 A schematic diagram of another embodiment of the JC series side bearing vertical stiffness testing fixture provided by the present invention; Figure 6 for Figure 5 A structural schematic diagram from another perspective is shown; Figure 7 for Figure 5 The diagram shows the exploded structure. Figure 8 for Figure 7 The diagram shows a structural schematic from another perspective. The JC series side bearing vertical stiffness test fixture includes: a base 1, on which two side plates 2 are symmetrically fixedly installed on the top. Each of the two side plates 2 is provided with an inclined pressure block 3 on the side that is close to each other. A side bearing fixing seat 4 is provided below the inclined pressure block 3. A single side bearing pad 5 is provided between the two side bearing fixing seats 4. The bottom of the side bearing pad 5 extends into the base 1.

[0019] Bolts 6 are provided on the side plate 2, and the side support fixing seat 4 is fixedly connected to the side plate 2 by bolts 6.

[0020] The side support fixing seat 4 has a threaded groove 7, and the side plate 2 has a mounting hole 10. The bolt 6 passes through the mounting hole 10 and extends into the threaded groove 7. A washer 8 and a spring 9 are sleeved on the outside of the bolt 6. The two ends of the spring 9 contact the inner wall of the mounting hole 10 and the washer 8 respectively, forming an elastic clamping mechanism to prevent loosening during the test.

[0021] The inclined pressure block 3 has a strip-shaped through hole 11, and the bolt 6 passes through the strip-shaped through hole 11. Through the cooperation between the strip-shaped through hole 11 and the bolt 6, the inclined pressure block 3 can be adjusted to a certain displacement.

[0022] The side plate 2 is provided with a pin 12, which passes through the side plate 2 and extends into the inclined pressure block 3.

[0023] like Figure 1-4 As shown, the side support pad 5 includes a support plate 51a and a positioning frame 52a, with the positioning frame 52a fixedly installed on the top of the support plate 51a.

[0024] like Figure 5-8 As shown, the side support pad 5 includes a second support plate 51b, two positioning strips 52b, and a positioning protrusion 53b. The two positioning strips 52b are fixedly installed on the top of the second support plate 51b, and the positioning protrusion 53b is fixedly installed on the top of the second support plate 51b, and the positioning protrusion 53b is located between the two positioning strips 52b.

[0025] The assembly steps of the JC series side bearing vertical stiffness testing fixture provided by this invention are as follows: Place the side bearing fixing seat 4 inside the side plate 2, aligning the mounting hole 10 on the side plate 2 with the threaded groove 7 of the side bearing fixing seat 4. Insert the bolt 6, which passes through the mounting hole 10 and the strip-shaped through hole 11 of the inclined pressure block 3, and screws it into the threaded groove 7. Pre-fit the washer 8 and spring 9 onto the bolt 6. The spring 9, when compressed, generates elastic force, keeping the connection point firmly fixed. Select the appropriate side bearing pad 5 according to the model of the side bearing to be tested (e.g., for JC-1, select...). Figure 1-4 The side bearing pads 5, JC, JC-2, and JC-3 are selected. Figure 5-8 The side support pad 5) and the side support fixing seat 4 corresponding to the side support pad 5 are placed between the two side support fixing seats 4 so that the bottom of the pad is embedded in the base 1; the pin 12 is inserted into the corresponding hole of the side plate 2 and the inclined pressure block 3 to lock the position of the inclined pressure block 3. The inclined surface design of the inclined pressure block 3 can adapt to the change of the side support height. Loading test: Place the side support in the positioning frame 52a or positioning strip 52b of the side support pad 5, apply a vertical load through an external testing machine, and conduct a stiffness test.

[0026] Compared with related technologies, the JC series side bearing vertical stiffness testing fixture provided by this invention has the following beneficial effects: Modular design improves versatility: By replacing different side bearing pads 5, the tooling can be applied to various side bearings in the JC series, reducing the types of tooling, lowering costs and storage space; Easy and efficient assembly and disassembly: The connection mechanism consisting of bolt 6, spring 9 and washer 8 replaces the traditional screw tightening method. During installation, simply insert the bolt and compress the spring to fix it. Disassembly is done in reverse, which saves a lot of time. The elastic compression of spring 9 effectively prevents loosening during testing. Simplified and stable structure: The number of parts is reduced and the overall structure is compact; the design of pin 12 and strip through hole 11 enhances adjustment flexibility and vibration resistance, ensuring accurate and reliable test data.

[0027] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A JC series side bearing vertical stiffness testing fixture, characterized in that, include: The base has two side plates symmetrically fixedly installed on its top. Each of the two side plates has an inclined pressure block on the side that is close to each other. A side support fixing seat is provided below the inclined pressure block. A side support pad is provided between the two side support fixing seats. The bottom of the side support pad extends into the base.

2. The JC series side bearing vertical stiffness testing fixture according to claim 1, characterized in that, Bolts are provided on the side plate, and the side support fixing seat is fixedly connected to the side plate by bolts.

3. The JC series side bearing vertical stiffness testing fixture according to claim 2, characterized in that, The side support fixing seat has a threaded groove, the side plate has a mounting hole, the bolt passes through the mounting hole and extends into the threaded groove, and a washer and a spring are sleeved on the outside of the bolt. The two ends of the spring are in contact with the inner wall of the mounting hole and the washer, respectively.

4. The JC series side bearing vertical stiffness testing fixture according to claim 3, characterized in that, The inclined pressure block has a strip-shaped through hole, and the bolt passes through the strip-shaped through hole.

5. The JC series side bearing vertical stiffness testing fixture according to claim 4, characterized in that, The side plate is provided with a pin, which passes through the side plate and extends into the inclined pressure block.

6. The JC series side bearing vertical stiffness testing fixture according to claim 1, characterized in that, The side support pad includes a first bearing plate and a positioning frame, with the positioning frame fixedly installed on the top of the first bearing plate.

7. The JC series side bearing vertical stiffness testing fixture according to claim 1, characterized in that, The side support pad includes a second support plate, two positioning strips, and a positioning protrusion. The two positioning strips are fixedly installed on the top of the second support plate, and the positioning protrusion is fixedly installed on the top of the second support plate, with the positioning protrusion located between the two positioning strips.

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