Coupler mounting seat fatigue test tool and use method thereof

Abstract

The invention discloses a coupler mounting seat fatigue test tool and a use method thereof, the coupler mounting seat fatigue test tool comprises a base assembly, a force application member and two connecting shafts, and the base assembly comprises symmetrically arranged side plates and a plurality of guide rods between the side plates; the two connecting shafts rotatably penetrate through the corresponding side plates respectively, one end of each connecting shaft is connected with the first connecting part of the coupler mounting seat, and the other end of each connecting shaft is connected with the locking assembly; the force application piece is provided with connecting wings extending towards the two sides respectively. When the connecting wing of the force application piece abuts against the second connecting part of the corresponding car coupler installation base, the car coupler installation base automatically rotates to the horizontal state under the action of external force, and the rotation freedom degree of the car coupler installation base can be limited through the locking assembly. According to the tool, the locking assembly is matched with the guide rod, so that the coupler mounting seat can be quickly and conveniently aligned and locked, the mounting difficulty of the coupler mounting seat is reduced, and the test efficiency is improved. Due to the design of the locking assembly, the coupler mounting seat is not easy to deflect under the action of force application, and the reliability of a test result is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of train equipment detection, and particularly relates to a fatigue test tooling for a coupler mounting seat and a using method thereof. Background Art

[0002] With the increasingly rapid development of global urbanization, rail transit has become more and more developed. While people obtain a more efficient means of transportation, they naturally have a need for more reliable safety guarantees. Among them, the performance of some key components in rail transit facilities becomes a reference for us to obtain the safety guarantee of equipment operation.

[0003] As a key component of rail transit facilities, the coupler mounting seat is widely used in A-type riveted subway trains. The coupler mounting seat is a device used to install a coupler to achieve the connection between vehicles. During the normal operation of the vehicle, the coupler mounting seat bears the traction force, braking force and lateral force when passing through curves between the front and rear vehicles. The coupler mounting seat is prone to cracks under the action of long-term fatigue loads. Due to the large load of subway trains, it is difficult to simulate the actual fatigue load of subway trains in the laboratory. At present, there is no relevant suitable tooling facility that can meet the requirements of the above-mentioned fatigue test.

[0004] In the prior art, for the coupler mounting seat, the main design basis is mainly the finite element analysis result, which cannot simulate the actual fatigue load of the loaded subway train. In addition, the coupler mounting seat is inconvenient to install in the laboratory, requires special tools to adjust the parallelism, and requires the cooperation of multiple people. Moreover, the coupler mounting seat is prone to deflection under the action of force application, affecting the test results.

[0005] In addition, among different specifications of coupler mounting seats, the sizes and arrangement spacings of the threaded holes cooperating with the connecting bolts are different, and the existing experimental tooling cannot be applied to the installation of different specifications of coupler mounting seats. Summary of the Invention

[0006] The purpose of the present invention is to provide a fatigue test tooling for a coupler mounting seat with a reasonable structure and unique design, so that when the coupler mounting seat is subjected to a fatigue test, it can simulate the actual fatigue load of the loaded subway train; and meet the static strength and fatigue strength requirements of the fatigue test.

[0007] The purpose of the present invention is achieved by adopting the following technical solutions: A fatigue test tooling for a coupler mounting seat, used for fixing the coupler mounting seat, includes: A base assembly, including symmetrically arranged side plates and a plurality of guide rods between the side plates; Two connecting shafts, each rotatably passing through the corresponding side plate, one end of the connecting shaft is connected to the first connecting part of the coupler mounting seat, and the other end is connected to a locking assembly; A force - applying member having connecting wings extending respectively to both sides; Wherein, the guiding rod penetrates through the force - applying member for moving guidance. When the connecting wings of the force - applying member lean against the second connecting part of the corresponding coupler mounting seat, the coupler mounting seat automatically rotates to a horizontal state under the action of an external force, and its rotational freedom can be restricted by the locking assembly.

[0008] In some embodiments, through - holes are provided on the side plates, and part of the connecting shaft is disposed in the through - holes.

[0009] In some embodiments, an annular groove space is formed between the through - holes and the connecting shaft. The locking assembly is disposed in the annular groove space, and part of it can selectively come into contact and cooperation with the through - holes and the connecting shaft.

[0010] In some embodiments, a first internal gear ring is provided on part of the inner wall of the through - hole; The connecting shaft is sequentially provided with a first external gear ring, a smooth section, and a threaded section from inside to outside; The locking assembly includes a nut, a locking member, and a spring; Wherein, the nut is connected to the threaded section. The locking member is slidably sleeved on the smooth section, and the locking member has a second external gear ring capable of meshing with the first internal gear ring respectively, and a second internal gear ring meshing with the first external gear ring. The spring is between the locking member and the first internal gear ring.

[0011] In some embodiments, the locking member is configured and arranged such that: during the installation stage, it is driven by the spring to be away from the corresponding side plate, enabling the coupler mounting seat to rotate freely; during the testing stage, it is driven by the nut to be close to the corresponding side plate, locking the coupler mounting seat on the corresponding side plate.

[0012] In some embodiments, the base assembly further includes a bottom plate and a back plate connecting the two side plates; Wherein, the back plate and the side plate together form an I - shaped structure, and one side of the force - applying member can lean against the back plate for movement.

[0013] In some embodiments, a plurality of connecting holes are provided on the bottom plate, and reinforcing ribs are provided between the bottom plate and the side plates.

[0014] In some embodiments, the thickness of the side plate is not less than 12 mm, the thickness of the bottom plate and the back plate is not less than 15 mm, the thickness of the connecting wing is not less than 30 mm, and the yield strength of the side plate and the bottom plate is not less than 213 Mpa.

[0015] In some embodiments, there are provided no less than three guiding holes on the force - applying member, and the guiding holes correspond to the guiding rods one by one.

[0016] In some embodiments, the connecting wing is detachably connected to the second connecting portion of the corresponding coupler mounting seat through a connecting assembly.

[0017] In some embodiments, an activity groove is provided on the connecting wing, and a threaded hole is provided on the second connecting portion. The connecting assembly includes an activity block, a cover plate, an adapter block, and a bolt. Wherein, the activity block is slidably arranged in the activity groove, and a first hole capable of aligning with the threaded hole is provided on the activity block. The cover plate is arranged above the connecting wing, and an avoidance groove corresponding to the activity groove is provided thereon. The adapter block partially penetrates through the avoidance groove and then connects the activity block, and a second hole communicating with the first hole is provided on the adapter block. The bolt sequentially penetrates through the second hole, the first hole, and then is connected and fixed to the threaded hole.

[0018] In some embodiments, the first hole is a tapered hole, the adapter block has a partial tapered outer wall, and the tapered outer wall can be mutually attached to the first hole.

[0019] A usage method of a fatigue test tooling for a coupler mounting seat includes the following steps: S1. Fix the fatigue test tooling on the workbench. The fatigue test tooling includes a base assembly, a force - applying member, and two connecting shafts. Among them, the base assembly includes symmetrically arranged side plates and a plurality of guiding rods between the side plates. The force - applying member has connecting wings extending towards both sides. S2. Connect one end of each connecting shaft to the first connecting portion of the coupler mounting seat to be tested, and make the other end rotatably penetrate through the corresponding side plate. S3. Sleeve the force - applying member on the guiding rods and connect the output end of the test equipment. Adjust the force - applying member to a horizontal state and control it to move downward until the connecting wings on both sides respectively lean against the second connecting portions of the corresponding coupler mounting seats. S4. The coupler mounting seat automatically rotates to a horizontal state under the gravity of the force - applying member or the pressure output by the test equipment. S5. Lock the first connecting portion of the coupler mounting seat to the corresponding side plate through a locking assembly, and fix the second connecting portion of the coupler mounting seat to the corresponding connecting wing through a connecting assembly. S6. Start the test equipment to conduct a fatigue test on the coupler mounting seat and record data.

[0020] In some embodiments, the base assembly further includes a back plate. The back plate connects the two side plates and together with them forms an I - shaped structure. One side of the force - applying member can move while leaning against the back plate.

[0021] In some embodiments, through holes are provided on the side plates, and a first internal gear ring is provided on the inner wall of a part of the through holes; A part of the connecting shaft is arranged in the through holes, and a first external gear ring is provided on the connecting shaft; The locking assembly includes a locking member detachably arranged between the first internal gear ring and the first external gear ring, and a second internal gear ring and a second external gear ring are respectively arranged on the inner and outer sides of the locking member; Wherein, in the installation stage, the locking member is pushed away from between the first internal gear ring and the first external gear ring, and the coupler mounting seat can rotate freely; while in the test stage, the locking member is pushed into between the first internal gear ring and the first external gear ring, causing the second internal gear ring to mesh with the first external gear ring and the second external gear ring to mesh with the first internal gear ring, thereby locking the coupler mounting seat on the corresponding side plate.

[0022] In some embodiments, an activity groove is provided on the connecting wing, and a threaded hole is provided on the second connecting portion; The connecting assembly includes an activity block, a cover plate, an adapter block and a bolt; Wherein, the activity block is slidably arranged in the activity groove, and a first hole capable of aligning with the threaded hole is provided on the activity block. The cover plate is arranged above the connecting wing, and an avoidance groove corresponding to the activity groove is provided thereon. The adapter block is partially penetrated through the avoidance groove and then connected to the activity block, and a second hole communicating with the first hole is provided on the adapter block. The bolt sequentially penetrates through the second hole, the first hole and then is connected and fixed to the threaded hole.

[0023] Compared with the prior art, the beneficial effects of the present invention at least include: 1. The structural characteristics of this tooling are similar to the actual structure of subway vehicles, and it can perfectly simulate the fatigue effect of the coupler load on the coupler mounting seat during the operation of subway trains, meet the requirement of simulating the stress state of the real coupler mounting seat under laboratory conditions, and greatly facilitate the research on the anti-fatigue performance and structural design of the coupler mounting seat.

[0024] 2. Through the cooperation of the locking assembly and the guide rod, this tooling enables a single person to quickly and conveniently align and lock the coupler mounting seat, reduces the installation difficulty of the coupler mounting seat, and improves the test efficiency.

[0025] 3. The design of the locking assembly makes the coupler mounting seat not easily deflect under the action of applied force, ensuring the reliability of the test results.

[0026] 4. The design of the connecting assembly enables the fixed connection between the force application member and the coupler mounting seat to be realized only by replacing the adapter block and the connecting bolt when testing coupler mounting seats of different specifications, and is applicable to the tests of coupler mounting seats of different specifications.

[0027] 5. The tooling has a high fatigue strength and meets the requirements of the fatigue test during the fatigue test of the coupler seat. Description of the Drawings

[0028] Figure 1 is a schematic structural view of the fatigue test tooling for the coupler mounting seat of the present invention.

[0029] Figure 2 is a sectional view of the fatigue test tooling for the coupler mounting seat of the present invention.

[0030] Figure 3 is Figure 2 an enlarged view of part A of

[0031] Figure 4 is an exploded schematic view of the assembly structure of the locking component, the connecting shaft and the side plate.

[0032] Figure 5 is a schematic view of the structure of the locking part.

[0033] Figure 6 is Figure 2 an enlarged view of part B of

[0034] Figure 7 is an exploded schematic view of the assembly structure of the connecting component, the car body, the coupler mounting seat and the force applying part.

[0035] In the figure: 1. Coupler mounting seat; 11. First connecting part; 12. Second connecting part; 121. Threaded hole; 2. Base component; 21. Side plate; 211. Through hole; 212. First internal gear ring; 22. Bottom plate; 221. Connecting hole; 23. Back plate; 24. Guide rod; 25. Reinforcing rib; 3. Connecting shaft; 31. First external gear ring; 32. Smooth section; 33. Threaded section; 4. Force applying part; 41. Connecting wing; 411. Moving slot; 42. Guide hole; 5. Locking component; 51. Nut; 52. Locking part; 521. Second external gear ring; 522. Second internal gear ring; 53. Spring; 6. Connecting component; 61. Movable block; 611. First hole; 62. Cover plate; 621. Avoidance slot; 63. Fitting block; 631. Second hole; 64. Bolt. Detailed Implementation Manner

[0036] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their repetitive description will be omitted.

[0037] The words describing the expression positions and directions in the present invention are all illustrated by taking the accompanying drawings as examples, but can be changed according to needs, and all the changes made are included in the protection scope of the present invention.

[0038] First, as shown Figure 7 in the figure, the coupler mounting seat 1 is generally in an L-shaped structure, which includes a first connecting portion 11 and a second connecting portion 12 that are vertically connected to each other, and is used to realize the coupling function between vehicles, and during the normal operation of the vehicle, bear the traction force, driving force and lateral force when passing through curves between the front and rear vehicles.

[0039] The fatigue test tooling for the coupler mounting seat of this application is mainly used to fix the coupler mounting seat 1 of this type and carry out fatigue tests. Refer to Figure 1 and Figure 2 shown in the figure, a fatigue test tooling for a coupler mounting seat includes a base assembly 2, a force applying member 4 and two connecting shafts 3.

[0040] Among them, the base assembly 2 is a frame structure composed of multiple plates, which includes symmetrically arranged side plates 21 and a plurality of guide rods 24 between the side plates 21. In this application, the connecting shaft 3 passes through the corresponding side plate 21, and the coupler mounting seat 1 is also arranged inside the corresponding side plate 21. The guide rod 24 is used to guide and level the force applying member 4, and the number thereof is not less than two. Referring to Figure 4 shown in the figure, in some examples, the side plates 21 can be arranged symmetrically left and right, and the bottoms of the two side plates 21 can be connected by a bottom plate 22. The number of guide rods 24 is preferably four, corresponding to the four corner positions of the force applying member 4 respectively, so as to provide a more stable guiding and leveling effect.

[0041] The two connecting shafts 3 respectively rotatably penetrate through the corresponding side plates 21. Among them, one end of the connecting shaft 3 is connected to the first connecting portion 11 of the coupler mounting seat 1, and their states always remain the same (rotate synchronously or are fixedly stationary). As Figure 4As shown, in some examples, through holes 211 are provided on the side plates 21, and a part of the connecting shaft 3 is inserted into the through holes 211 and can rotate around its center. The inner end of the connecting shaft 3 can be welded and fixed to the first connecting part 11 of the coupler mounting seat 1 to ensure a firm connection and strong load-bearing capacity. The outer end of the connecting shaft 3 is connected to the locking assembly 5 for locking between the connecting shaft 3 and the corresponding side plate 21, causing the connecting shaft 3 and / or the coupler mounting seat 1 to remain stationary and fixed at the corresponding side plate 21. The structure and principle are described in detail below.

[0042] The force application member 4 is generally in an inverted "T" structure, which has connecting wings 41 extending to both sides and a cylindrical part in the middle. Among them, the connecting wings 41 are used to press against the second connecting part 12 of the coupler mounting seat 1 and remain fixedly connected to it after leveling. The cylindrical part is used to connect the output end of the test equipment (not shown) to provide the pressure required for testing.

[0043] Still as Figure 1 and Figure 2 As shown, in this fatigue test tooling for the coupler mounting seat, the guide rod 24 passes through the force application member 4 for moving guidance. And due to the existence of multiple guide rods 24, the force application member 4 can be easily adjusted to a horizontal state. When the connecting wing 41 of the force application member 4 abuts against the second connecting part 12 of the corresponding coupler mounting seat 1, under the action of an external force (the gravity of the force application member 4 or the pressure output by the test equipment), the second connecting part 12 will be forced to rotate until it is flush with the corresponding connecting wing 41, thereby causing the coupler mounting seat 1 to also rotate to a horizontal state. Then, the locking assembly 5 is used to restrict its rotational freedom, such as locking the connecting shaft 3 and the side plate 21 through the locking assembly 5 to ensure that the corresponding coupler mounting seat 1 is stationary and fixed. Subsequently, connect the connecting wing 41 of the force application member 4 to the second connecting part 12 of the corresponding coupler mounting seat 1, and the test equipment can be started to conduct a fatigue test on the coupler mounting seat 1.

[0044] Refer to Figures 2 to 4 As shown, in some embodiments, an annular groove space is formed between the through hole 211 and the connecting shaft 3. The locking assembly 5 is arranged in the annular groove space, and a part of it can selectively contact and cooperate with the through hole 211 and the connecting shaft 3, causing the connecting shaft 3 to be able to switch between a freely rotatable state and a stationary and fixed state, facilitating the installation and test operation of the coupler mounting seat 1.

[0045] Specifically, in a preferred example, a first internal gear ring 212 is provided on a part of the inner wall of the through hole 211. Among them, the diameter of the first internal gear ring 212 is smaller than the diameter of the through hole 211, and a structure similar to "¬" is formed at the connection (see Figure 3 ) This structure can be used to abut against the spring 53 and can limit the movement of the locking member 52 to ensure that the locking member 52 is in precise contact with the first internal gear ring 212 and the first external internal gear ring.

[0046] The connecting shaft 3 is successively provided with a first external gear ring 31, a smooth section 32, and a threaded section 33 from the inside to the outside (see Figure 4 ), wherein the first external gear ring 31 and the first internal gear ring 212 are spaced relative to each other inside and outside.

[0047] The locking assembly 5 includes a nut 51, a locking member 52, and a spring 53. Among them, the nut 51 is connected to the threaded section 33. The locking member 52 is generally in a convex structure, which includes a smooth circular ring portion and a gear portion connected thereto. The locking member 52 is slidably sleeved on the smooth section 32, and the locking member 52 has a second external gear ring 521 that can respectively engage with the first internal gear ring 212, and a second internal gear ring 522 that engages with the first external gear ring 31 (see Figure 5 ), and the second internal gear ring 522 and the second external gear ring 521 are located on the inner and outer sides of the gear portion), and the spring 53 is interposed between the locking member 52 and the first internal gear ring 212.

[0048] The locking member 52 is constructed and arranged such that: during the installation stage, it is driven by the spring 53 to move away from the corresponding side plate 21. At this time, the first internal gear ring 212 is separated from the second external gear ring 521, and the first external gear ring 31 is separated from the second internal gear ring 522. The coupler mounting seat 1 can rotate freely with the corresponding connecting shaft 3 until it adjusts itself to the horizontal state. During the testing stage, the spring 53 can be pre-compressed by tightening the nut 51 to drive it against the corresponding side plate 21. At this time, the first internal gear ring 212 engages with the second external gear ring 521, and the first external gear ring 31 engages with the second internal gear ring 522. The coupler mounting seat 1 is locked to the corresponding side plate 21 with the corresponding connecting shaft 3 and remains stationary.

[0049] See Figure 4 As shown, in some embodiments, the base assembly 2 further includes a bottom plate 22 and a back plate 23 connecting the two side plates 21, thereby improving the stability of the base assembly 2. Among them, the back plate 23 and the side plate 21 together form an I-shaped structure, and the back plate 23 is perpendicular to the bottom plate 22. From Figure 1 or Figure 7 it can be seen that the front, rear, left, and right sides of the force application member 4 are all vertical planes. One side (such as the back side) of the force application member 4 can move against the back plate 23. The force application member 4 can quickly adjust its position and remain horizontal under the guidance of the back plate 23, which is more conducive to the quick cooperation with the guide rod 24.

[0050] In some embodiments, a plurality of connection holes 221 are provided on the bottom plate 22. These holes are used to connect a workbench (not shown), which is convenient for fixing the tooling, thereby facilitating the fatigue test and greatly improving the test efficiency. In addition, a reinforcing rib 25 is provided between the bottom plate 22 and the side plate 21 to enhance the connection and stability between the two. See Figure 7As shown, in some embodiments, there are no less than three guiding holes 42 provided on the force-applying member 4, preferably four, which are respectively arranged at the four corners of the force-applying member 4, and the guiding holes 42 correspond to the guiding rods 24 one by one, improving the stability of its movement while keeping the force-applying member 4 horizontal.

[0051] In this fatigue test tooling for the coupler mounting seat, the thickness of the side plate 21 is not less than 12 mm, the thicknesses of the bottom plate 22 and the back plate 23 are not less than 15 mm, the thickness of the connecting wing 41 is not less than 30 mm, and the yield strengths of the side plate 21 and the bottom plate 22 are not less than 213 Mpa, so that it has a relatively high fatigue strength and can meet the requirements of the fatigue test during the fatigue test of the coupler seat.

[0052] See Figure 2 、 Figure 6 and Figure 7 As shown, in some embodiments, the connecting wing 41 is detachably connected to the second connecting portion 12 of the corresponding coupler mounting seat 1 through the connecting component 6, so that the force-applying member 4 can be applied to the tests of coupler mounting seats 1 of different specifications, with stronger versatility.

[0053] Specifically, in a preferred example, a movable groove 411 is provided on the connecting wing 41, and the movable groove 411 can be arranged along the front-back direction, facilitating the movement and adjustment of the movable block 61 to the target position.

[0054] Threaded holes 121 are provided on the second connecting portion 12 of the coupler mounting seat 1. There are multiple threaded holes 121, for example, three, and they can be arranged at intervals along the front-back direction to make the force on the second connecting portion 12 uniform and the connection firm.

[0055] The connecting component 6 includes a movable block 61, a cover plate 62, an adapter block 63 and a bolt 64. Among them, the movable block 61 is slidably arranged in the movable groove 411, and a first hole 611 capable of aligning with the threaded hole 121 is provided on the movable block 61. The cover plate 62 is arranged above the connecting wing 41, and an avoidance groove 621 corresponding to the movable groove 411 is provided thereon. The adapter block 63 partially penetrates through the avoidance groove 621 and then connects the movable block 61, and a second hole 631 communicating with the first hole 611 is provided on the adapter block 63. Move and adjust the position of the adapter block 63 until the second hole 631, the first hole 611 and the threaded hole 121 are on the same vertical line, and the bolt 64 sequentially penetrates through the second hole 631 and the first hole 611 and then connects and fixes with the threaded hole 121, then the connection and fixation between the force-applying member 4 and the coupler mounting seat 1 can be realized.

[0056] It can be understood that in the coupler mounting seats 1 of different specifications, the sizes and arrangement spacings of the threaded holes 121 cooperating with the bolts 64 are different. Therefore, in this connecting assembly 6, the adapter blocks 63 and the bolts 64 are used as replacement parts. When testing the coupler mounting seats 1 of different specifications, it is not necessary to replace the force-applying member 4. Only by replacing the adapter blocks 63 and the connecting bolts 64 can the fixed connection between the force-applying member 4 and the coupler mounting seat 1 be achieved, thereby improving the versatility of the tooling.

[0057] Preferably, as Figure 6 shown, the first hole 611 is a tapered hole, the adapter block 63 has a partially tapered outer wall, and the tapered outer wall can fit with the first hole 611. The tapered fit design can meet the connection requirements of different adapter blocks 63 and bolts 64, so as to be applicable to the tests of coupler mounting seats 1 of different specifications.

[0058] In summary, the fatigue test tooling for the coupler mounting seat of the present application can quickly and conveniently align and lock the coupler mounting seat 1 through the cooperation of the locking assembly 5 and the guide rod 24, thereby improving the test efficiency. Compared with the original method of multi-person cooperation (special tools are required to adjust the parallelism) for installation, the efficiency can be effectively increased by 2 to 3 times after using this tooling, and the coupler mounting seat 1 is not prone to deflection under the action of the applied force, ensuring the reliability of the test results.

[0059] On the other hand, the setting of the connecting assembly 6 enables the fixed connection between the force-applying member 4 and the coupler mounting seat 1 to be achieved only by replacing the adapter block 63 and the connecting bolt 64 when testing the coupler mounting seats 1 of different specifications, which is applicable to the tests of coupler mounting seats 1 of different specifications and has extremely strong versatility.

[0060] Furthermore, the structural characteristics of this tooling are similar to the actual structure of the subway vehicle, and it can perfectly simulate the fatigue effect of the coupler load on the coupler mounting seat 1 when the subway train is running, meet the stress state of the real coupler mounting seat 1 under laboratory conditions, and greatly facilitate the research on the anti-fatigue performance and structural design of the coupler mounting seat 1.

[0061] Refer to Figures 1 to 7 shown, the present application also discloses a method for using the fatigue test tooling for the coupler mounting seat, including steps S1 to S6.

[0062] S1. Fix the fatigue test tooling on the workbench. The fatigue test tooling includes a base assembly 2, a force-applying member 4, and two connecting shafts 3. Among them, the base assembly 2 includes symmetrically arranged side plates 21 and a plurality of guide rods 24 between the side plates 21, and the force-applying member 4 has connecting wings 41 extending to both sides; S2. Connect one end of each connecting shaft 3 to the first connecting portion 11 of the coupler mounting seat 1 to be tested, and make the other end thereof rotatably penetrate through the corresponding side plate 21; S3. Sheath the force application member 4 on the guide rod 24 and connect it to the output end of the test equipment. Adjust the force application member 4 to a horizontal state and control it to move downward until the connecting wings 41 on both sides respectively lean against the second connecting parts 12 of the corresponding coupler mounting seats 1. S4. The coupler mounting seat 1 automatically rotates to a horizontal state under the gravity of the force application member 4 or the pressure output by the test equipment. S5. Lock the first connecting part 11 of the coupler mounting seat 1 to the corresponding side plate 21 through the locking assembly, and fix the second connecting part 12 of the coupler mounting seat 1 to the corresponding connecting wing 41 through the connecting assembly 6. S6. Start the test equipment to conduct a fatigue test on the coupler mounting seat 1 and record the data.

[0063] See Figure 4 As shown, in step S1, the base assembly 2 further includes a back plate 23. The back plate 23 connects the two side plates 21 and together with them forms an I-shaped structure. One side of the force application member 4 can move while leaning against the back plate 23. In this step, the back plate 23 can guide the force application member 4 which is larger than it, enabling it to quickly adjust its position and maintain a horizontal state. While facilitating the cooperation with the guide rod 24, it further ensures the levelness of the force application member 4.

[0064] See Figures 2 to 4 As shown, through holes 211 are provided on the side plates 21, and first internal toothed rings 212 are provided on partial inner walls of the through holes 211. The connecting shaft 3 is partially inserted into the through holes 211, and a first external toothed ring 31 is provided on the connecting shaft 3. The locking assembly 5 includes a locking member 52 detachably arranged between the first internal toothed ring 212 and the first external toothed ring 31, and second internal toothed rings 522 and second external toothed rings 521 are respectively arranged on the inner and outer sides of the locking member 52.

[0065] In the installation stage, that is, from step S2 to step S4, push the locking member 52 away from between the first internal toothed ring 212 and the first external toothed ring 31, and the coupler mounting seat 1 can freely rotate together with the corresponding connecting shaft 3 until it adjusts itself to a horizontal state. Before the test, that is, in step S5, push the locking member 52 into between the first internal toothed ring 212 and the first external toothed ring 31, causing the second internal toothed ring 522 to mesh with the first external toothed ring 31 and the second external toothed ring 521 to mesh with the first internal toothed ring 212, thereby locking the coupler mounting seat 1 to the corresponding side plate 21, avoiding its deflection during the test, and ensuring the effectiveness and reliability of the test results.

[0066] See Figure 6 and Figure 7 As shown, movable slots 411 are provided on the connecting wings 41, and threaded holes 121 are provided on the second connecting parts 12.

[0067] The connecting component 6 includes a movable block 61, a cover plate 62, an adapter block 63 and a bolt 64. Among them, the movable block 61 is slidably arranged in the movable groove 411, and a first hole 611 capable of aligning with the threaded hole 121 is provided on the movable block 61. The cover plate 62 is arranged above the connecting wing 41, and an avoidance groove 621 corresponding to the movable groove 411 is provided thereon. The adapter block 63 partially penetrates through the avoidance groove 621 and then connects to the movable block 61, and a second hole 631 communicating with the first hole 611 is provided on the adapter block 63. The bolt 64 sequentially penetrates through the second hole 631 and the first hole 611 and then connects and fixes to the threaded hole 121.

[0068] The setting of the connecting component 6 enables that when testing the coupler mounting seat 1 of different specifications, only by replacing the adapter block 63 and the connecting bolt 64 can the fixed connection between the force applying member 4 and the coupler mounting seat 1 be realized, which is applicable to the test of the coupler mounting seat 1 of different specifications.

[0069] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Without departing from the principle and purpose of the present invention, those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the invention, and all these changes should fall within the protection scope of the claims of the present invention.

Claims

1. A coupler mounting seat fatigue test fixture, used for fixing a coupler mounting seat (1), characterized in that: include: A base assembly (2) comprising symmetrically arranged side plates (21) and a plurality of guide rods (24) disposed between the side plates (21); Two connecting shafts (3), each rotatably passing through the corresponding side plate (21), one end of the connecting shaft (3) being connected to the first connecting portion (11) of the coupler mounting seat (1), and the other end being connected to the locking assembly (5); A force applying member (4) having connecting wings (41) extending to both sides respectively; The guide rod (24) penetrates the force-applying member (4) for movement guidance, and when the connecting wing (41) of the force-applying member (4) is abutted against the second connecting portion (12) corresponding to the coupler mounting seat (1), the coupler mounting seat (1) automatically rotates to a horizontal state under the action of an external force, and its rotational freedom can be limited by the locking assembly (5).

2. The coupler mounting seat fatigue test tool according to claim 1, characterized in that: The side plate (21) is provided with a through hole (211), and the connecting shaft (3) is partially inserted into the through hole (211).

3. The fatigue test fixture for the coupler mounting seat according to claim 2, characterized in that: An annular groove space is formed between the through hole (211) and the connecting shaft (3), the locking assembly (5) is arranged in the annular groove space, and a portion of the locking assembly (5) can selectively contact and cooperate with the through hole (211) and the connecting shaft (3).

4. The fatigue test fixture for the coupler mounting seat according to claim 3, characterized in that: A first inner gear ring (212) is provided on a portion of the inner wall of the through hole (211); The connecting shaft (3) is provided with a first outer gear ring (31), a smooth surface section (32) and a threaded section (33) in sequence from the inside to the outside; The locking assembly (5) comprises a nut (51), a locking member (52) and a spring (53); The nut (51) is connected to the threaded section (33), the locking member (52) is slidably mounted on the smooth section (32), and the locking member (52) has a second outer gear ring (521) that can respectively mesh with the first inner gear ring (212), and a second inner gear ring (522) that meshes with the first outer gear ring (31), and the spring (53) is interposed between the locking member (52) and the first inner gear ring (212).

5. The coupler mounting seat fatigue test fixture according to claim 4, characterized in that: The locking member (52) is constructed and arranged such that: during the installation phase, the spring (53) drives it away from the corresponding side plate (21), so that the coupler mounting seat (1) can rotate freely; during the testing phase, the nut (51) drives it close to the corresponding side plate (21), so that the coupler mounting seat (1) is locked on the corresponding side plate (21).

6. The fatigue test fixture for the coupler mounting seat according to claim 1, characterized in that: The base assembly (2) further comprises a bottom plate (22) and a back plate (23) connected to the two side plates (21); The back plate (23) and the side plate (21) together form an I-shaped structure, and one side of the force applying member (4) can move against the back plate (23).

7. The fatigue test fixture for the coupler mounting seat according to claim 6, characterized in that: A plurality of connection holes (221) are provided on the bottom plate (22), and reinforcing ribs (25) are provided between the bottom plate (22) and the side plate (21).

8. The fatigue test fixture for the coupler mounting seat according to claim 6, characterized in that: The thickness of the side plate (21) is not less than 12 mm, the thickness of the bottom plate (22) and the back plate (23) is not less than 15 mm, the thickness of the connecting wing (41) is not less than 30 mm, and the yield strength of the side plate (21) and the bottom plate (22) is not less than 213 Mpa.

9. The coupler mounting seat fatigue test tool according to claim 1, characterized in that: The force applying member (4) is provided with no less than three guide holes (42), and the guide holes (42) correspond one to one with the guide rods (24).

10. The coupler mounting seat fatigue test tool according to claim 1, characterized in that: The connecting wing (41) is detachably connected to a second connecting portion (12) corresponding to the coupler mounting seat (1) via a connecting assembly (6).

11. The fatigue test tool for the coupler mounting seat according to claim 10, characterized in that: The connecting wing (41) is provided with a movable groove (411), and the second connecting portion (12) is provided with a threaded hole (121); The connecting assembly (6) comprises a movable block (61), a cover plate (62), an adaptor block (63) and a bolt (64); The movable block (61) is slidably arranged in the movable groove (411), and a first hole (611) capable of being aligned with the threaded hole (121) is provided on the movable block (61); the cover plate (62) is arranged above the connecting wing (41), and a avoidance groove (621) corresponding to the movable groove (411) is provided on the cover plate (62); the adapter block (63) partially penetrates the avoidance groove (621) and is connected to the movable block (61); the adapter block (63) is provided with a second hole (631) connected to the first hole (611); the bolt (64) penetrates the second hole (631) and the first hole (611) in sequence and is connected and fixed to the threaded hole (121).

12. The coupler mounting seat fatigue test tool according to claim 11, characterized in that: The first hole (611) is a tapered hole, the adapter block (63) has a partially tapered outer wall, and the tapered outer wall is capable of fitting with the first hole (611).

13. A method for using a coupler mounting seat fatigue test tool, characterized in that: The following steps are involved: S1. Fixing a fatigue test fixture on a workbench, the fatigue test fixture comprising a base assembly (2), a force-applying member (4), and two connecting shafts (3); wherein the base assembly (2) comprises symmetrically arranged side panels (21) and a plurality of guide rods (24) between the side panels (21), and the force-applying member (4) has connecting wings (41) extending to both sides; S2, connecting one end of each connecting shaft (3) to the first connecting portion (11) of the coupler mounting seat (1) to be tested, and allowing the other end of each connecting shaft (3) to rotatably penetrate the corresponding side plate (21); S3, sleeve the force-applying member (4) onto the guide rod (24) and connect it to the output end of the test equipment, adjust the force-applying member (4) to a horizontal state and control it to move downward until the connecting wings (41) on both sides respectively rest against the second connecting portions (12) of the corresponding coupler mounting seats (1); S4, the coupler mounting seat (1) automatically rotates to a horizontal state under the gravity of the force applying member (4) or the pressure output by the test equipment; S5. Locking the first connection portion (11) of the coupler mounting seat (1) and the corresponding side plate (21) by means of a locking assembly, and fixing the second connection portion (12) of the coupler mounting seat (1) and the corresponding connection wing (41) by means of a connecting assembly (6); S6. Start the test equipment to perform a fatigue test on the coupler mounting seat (1) and record the data.

14. The method for using the coupler mounting seat fatigue test tool according to claim 12, characterized in that: The base assembly (2) further comprises a back plate (23), wherein the back plate (23) is connected to the two side plates (21) and together with the side plates (21) form an I-shaped structure, and one side of the force applying member (4) can be moved against the back plate (23).

15. The method for using the coupler mounting seat fatigue test tool according to claim 12, characterized in that: A through hole (211) is provided on the side plate (21), and a first inner gear ring (212) is provided on a portion of the inner wall of the through hole (211); The connecting shaft (3) is partially inserted into the through hole (211), and a first outer gear ring (31) is provided on the connecting shaft (3); The locking assembly (5) comprises a locking member (52) which is detachably arranged between the first inner gear ring (212) and the first outer gear ring (31), and the inner and outer sides of the locking member (52) are respectively provided with a second inner gear ring (522) and a second outer gear ring (521); In the installation stage, the locking member (52) is pushed away from between the first inner gear ring (212) and the first outer gear ring (31), and the coupler mounting seat (1) can rotate freely; and in the testing stage, the locking member (52) is pushed between the first inner gear ring (212) and the first outer gear ring (31), so that the second inner gear ring (522) meshes with the first outer gear ring (31), and the second outer gear ring (521) meshes with the first inner gear ring (212), thereby locking the coupler mounting seat (1) on the corresponding side plate (21).

16. The method for using the coupler mounting seat fatigue test tool according to claim 12, characterized in that: The connecting wing (41) is provided with a movable groove (411), and the second connecting portion (12) is provided with a threaded hole (121); The connecting assembly (6) comprises a movable block (61), a cover plate (62), an adaptor block (63) and a bolt (64); The movable block (61) is slidably arranged in the movable groove (411), and a first hole (611) capable of being aligned with the threaded hole (121) is provided on the movable block (61); the cover plate (62) is arranged above the connecting wing (41), and a avoidance groove (621) corresponding to the movable groove (411) is provided on the cover plate (62); the adapter block (63) partially penetrates the avoidance groove (621) and is connected to the movable block (61); the adapter block (63) is provided with a second hole (631) communicating with the first hole (611); the bolt (64) penetrates the second hole (631) and the first hole (611) in sequence and is connected and fixed to the threaded hole (121).

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