Fatigue testing machine for aviation belleville spring

Abstract

The invention discloses an aviation belleville spring fatigue testing machine, and relates to the technical field of belleville spring testing. According to the invention, after a single belleville spring test is completed, a next test object can be rapidly imported, and a continuous fatigue test mode is realized. According to the disc spring testing device, the disc spring placed manually and the disc spring falling from the placing and separating groove are subjected to mutual collision and energy transfer, so that the positions of the disc spring and the disc spring are interchanged, and the multiple disc springs can enter the testing link in sequence in cooperation with the processes of magnetic adsorption, fluted disc centrifugal adjustment and the like, so that the time required for manual queuing testing is greatly shortened. The batch and automatic test mode not only improves the productivity, but also can maintain the repeatability and stability of consistent measurement results of different batches of belleville springs.

Description

Technical Field

[0001] The present invention relates to the technical field of disc spring testing, and specifically to a fatigue testing machine for disc springs used in aviation. Background Art

[0002] Disc springs play a crucial role in supporting and energy buffering in high-precision fields such as aviation. Their material strength and deformation characteristics have a significant impact on the safety and reliability of the overall structure. Therefore, fatigue testing of disc springs is particularly important, and it is necessary to obtain their life data and deformation laws in an environment of repeated collisions or compressions.

[0003] In traditional testing methods, most existing equipment can only complete simple detections of single or a small number of springs, and cannot continuously process multiple springs, thus failing to meet the requirements of batch or high-efficiency testing. All these defects make the fatigue testing process of disc springs inefficient, difficult to ensure the comprehensiveness and consistency of test results, and also difficult to fully meet the strict requirements of the aviation field for performance verification of disc springs. Summary of the Invention

[0004] To overcome the defects of the above-mentioned prior art, the present invention provides the following technical solution: A fatigue testing machine for disc springs used in aviation, including a test tabletop. An acceleration slide rail groove and a placement and separation groove are provided on the test tabletop. The acceleration slide rail groove and the placement and separation groove are communicated, and a support disk is also embedded on the test tabletop. The upper surface of the support disk is flush with the acceleration slide rail groove and the placement and separation groove, so that the disc spring can slide without obstruction; a storage cylinder is slidably arranged on the upper surface of the test tabletop at the position of the placement and separation groove. Disc springs are stacked in the storage cylinder and used to send the disc springs inside the storage cylinder into the placement and separation groove; an impact head is slidably arranged in the acceleration slide rail groove and is used to strike the disc spring in the placement and separation groove to move it to the center of the support disk.

[0005] Preferably, the test tabletop is fixed above the base by being suspended by four support legs. An electric cylinder is also fixedly installed on the lower surface of the test tabletop. The end of the telescopic rod of the electric cylinder is fixedly installed with a rack, and the rack is slidably engaged with the lower surface of the test tabletop. A swing gear meshing with the rack is rotatably installed on the lower surface of the test tabletop; the storage cylinder is fixedly installed on a storage cylinder swing rod, and the storage cylinder swing rod is rotatably installed on the test tabletop. The test tabletop and the swing gear are fixedly and synchronously rotated through a rotating shaft.

[0006] Preferably, a guiding impact slide rail is provided inside the acceleration slide rail groove on the test tabletop. A sliding anti-rotation block is slidably arranged inside the guiding impact slide rail. The sliding anti-rotation block is fixedly fitted with the impact head. A sliding sleeve block is fixedly installed on the sliding anti-rotation block, and a toggle pin is fixedly arranged on the sliding sleeve block. On the lower surface of the test tabletop, two parallel sliding support fixed beams are fixedly installed on both sides of the guiding impact slide rail. Two parallel adjusting impact rod sliding supports are fixedly installed between the two sliding support fixed beams. An adjusting impact rod is slidably arranged on the two adjusting impact rod sliding supports. Threaded holes are provided at the positions of the adjusting impact rod on the two adjusting impact rod sliding supports, and adjusting screws are threadedly fitted in the threaded holes for fixing the adjusting impact rod on the two adjusting impact rod sliding supports. Moreover, a cushion block is also lapped between one of the sliding support fixed beams and the adjusting impact rod, and the cushion block is magnetically attracted and fitted with the test tabletop.

[0007] Preferably, sliding sleeve block guiding slide rods are also fixedly installed on the two sliding support fixed beams. The sliding sleeve block is slidably installed on the sliding sleeve block guiding slide rods. An impact pulling spring is also arranged around the sliding sleeve block guiding slide rods. Two ends of the impact pulling spring are fixedly fitted with one of the sliding support fixed beams and the sliding sleeve block. An impact transmission belt support is also fixedly installed on the test tabletop. An impact transmission belt is rotatably installed on the impact transmission belt support. The impact transmission belt is driven by an impact drive motor fixed on the impact transmission belt support. Impact paddles are fixedly arranged on the edge of the impact transmission belt. The impact paddles are in contact and cooperation with the toggle pins for toggling the sliding sleeve block to slide on the sliding sleeve block guiding slide rods.

[0008] Preferably, a reset electromagnet is fixedly installed above the support disk on the base through a reset electromagnet support. The reset electromagnet is located above the support disk and is coaxially arranged with the support disk. A reset guiding rod is fixedly installed at the axis center of the reset electromagnet. A magnetic attraction block and an air separation tube column are slidably sleeved on the reset guiding rod. The magnetic attraction block and the air separation tube column are integrally arranged. An extrusion plate is fixed at the bottom end of the air separation tube column. The extrusion plate is also slidably sleeved on the reset guiding rod.

[0009] Preferably, a pulling sleeve is integrally fixed at the center of the lower surface of the extrusion plate. The pulling sleeve is slidably sleeved on the reset guiding rod. Moreover, a chamfer is provided at the bottom end of the pulling sleeve. The chamfer is used for guiding the disc spring to the outer surface of the pulling sleeve so that the disc spring is sleeved on the pulling sleeve. An annular clamping groove is also provided at the bottom end of the pulling sleeve.

[0010] Preferably, a test electromagnet is fixedly installed at a coaxial position directly below the support plate on the base. A pull-down guide rod support plate is sleeved and fixed on the outer surface of the test electromagnet. Three pull-down guide rods are slidably installed on the pull-down guide rod support plate. One end of each of the three pull-down guide rods close to the test tabletop is fixedly fitted with an attraction test plate. A return spring is disposed around each pull-down guide rod, and both ends of the return spring are fixedly fitted with the attraction test plate and the pull-down guide rod support plate.

[0011] Preferably, the attraction test plate is magnetically coupled with the test electromagnet, and a switching gear disk and an engaging gear are rotatably embedded in the attraction test plate. The engaging gear and the switching gear disk are in meshing transmission. An engaging motor is also fixedly installed on the attraction test plate, and an output shaft of the engaging motor is fixedly fitted with the engaging gear. An embedding disk is coaxially and fixedly installed on the switching gear disk.

[0012] Preferably, a radial sliding groove is provided in the radial direction inside the embedding disk. A U-shaped card is slidably disposed in the radial sliding groove. A permanent magnet is fixedly disposed at one end of the radial sliding groove, and the permanent magnet is magnetically coupled with the U-shaped card.

[0013] Preferably, a clamping through hole is provided at the center of the embedding disk. The pulling sleeve can pass through the clamping through hole so that the annular clamping groove is flush with the U-shaped card, and the U-shaped card is in clamping fit with the annular clamping groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention realizes the separation and unloading of disc springs one by one by using a swinging gear and a rack mechanism between the storage barrel and the separation groove. This separation method can ensure that the spring falls smoothly into the separation groove while avoiding the stacking or jamming problems caused by traditional manual picking and placing. Due to the concave arrangement of the separation groove, multiple disc springs stacked in the storage barrel can be separated one by one, and the operation process is fully automated, without the need for frequent intervention by operators; (2) The present invention drives the engagement gear and the switching gear disk to rotate through the engagement motor, so that the embedded disk uses centrifugal force to separate the U-shaped card from the permanent magnet. After the pulling sleeve is inserted into the card-in through hole, the engagement motor is stopped, so that the U-shaped card can return to its position and engage with the permanent magnet, firmly clamping the pulling sleeve. This unique combination of "centrifugal-magnetic" dual control avoids frequent sliding or alignment problems during operation, and can ensure the precise insertion of the pulling sleeve before and after the test, and can stably maintain the positioning of the disc spring during subsequent tests, reducing additional mechanical errors; (3) The present invention can quickly introduce the next test object after completing the test of a single disc spring, thereby realizing a continuous fatigue test mode. First, the manually placed disc spring and the disc spring that falls from the separation groove "collide with each other and transfer energy", so that the positions of the two are interchanged, and then combined with magnetic adsorption and centrifugal adjustment of the gear disc and other processes, multiple disc springs can enter the test link in turn, greatly shortening the time required for manual queuing testing. This batch and automated testing method not only improves production capacity, but also maintains the repeatability and stability of consistent measurement results for different batches of disc springs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a structural schematic diagram of the material storage barrel of the present invention.

[0017] Figure 3 This is a structural schematic diagram of the test electromagnet of the present invention.

[0018] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at point A in the middle.

[0019] Figure 5 It is a schematic diagram of the structure of the return spring of the present invention.

[0020] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point B in the middle.

[0021] Figure 7 This is a schematic diagram of the structure of the attraction test board of the present invention.

[0022] Figure 8 For the present invention Figure 7 Schematic diagram of the structure at point C in the middle.

[0023] In the figure: 101-base; 102-test table; 103-support leg; 104-storage barrel; 105-storage barrel swing rod; 106-reset electromagnet bracket; 107-reset electromagnet; 108-reset guide rod; 109-magnetic block; 110-space column; 111-extrusion plate; 112-support plate; 113-acceleration slide rail groove; 114-impact head; 115-placement separation groove; 116-test electromagnet; 117-pull-down guide rod bracket plate; 118-pull-down guide rod; 119-reset spring; 120-attraction test plate; 121-guide impact slide rail; 122-sliding sleeve block; 123-toggle pin; 124-sliding anti-rotation block ;125-engaging motor;126-engaging gear;127-switching gear plate;128-pulling sleeve;129-embedded disk;130-annular slot;131-permanent magnet;132-U-shaped card;133-radial slide groove;134-snapping through hole;135-electric cylinder;136-rack;137-swinging gear;138-impact drive motor;139-impact transmission belt;140-impact paddle;141-sliding sleeve guide slide rod;142-impact tension spring;143-adjusting impact rod sliding bracket;144-adjusting impact rod;145-adjusting screw;146-pad;147-sliding bracket fixing beam;148-impact transmission belt bracket. DETAILED DESCRIPTION

[0024] The following is combined with Figures 1-8 , and further illustrate the technical solution of the present invention through specific implementation methods.

[0025] The present invention provides a disc spring fatigue testing machine for aviation, comprising a test table 102, on which an acceleration slide groove 113 and a placement separation groove 115 are arranged, the acceleration slide groove 113 and the placement separation groove 115 are connected, and a support plate 112 is also embedded on the test table 102, the upper surface of the support plate 112 is flush with the acceleration slide groove 113 and the placement separation groove 115, so that the disc spring can slide without obstruction; a storage barrel 104 is slidably arranged on the upper surface of the test table 102 at the position of the placement separation groove 115, and disc springs are stacked in the storage barrel 104, which is used to send the disc springs inside the storage barrel 104 into the placement separation groove 115; wherein an impact head 114 is slidably arranged in the acceleration slide groove 113, which is used to hit the disc spring in the placement separation groove 115 and move it to the center of the support plate 112.

[0026] The test table 102 is suspended and fixed above the base 101 by four supporting legs 103. An electric cylinder 135 is also fixedly installed on the lower surface of the test table 102. A rack 136 is fixedly installed on the end of the telescopic rod of the electric cylinder 135. The rack 136 is slidably matched with the lower surface of the test table 102, and a swing gear 137 meshing with the rack 136 is rotatably installed on the lower surface of the test table 102; wherein the material storage barrel 104 is fixedly installed on the material storage barrel rocker 105, and the material storage barrel rocker 105 is rotatably installed on the test table 102, and the test table 102 and the swing gear 137 are fixed and rotated synchronously through a rotating shaft. The test table 102 is provided with a guiding impact rail 121 located inside the accelerating rail groove 113, and a sliding anti-rotation block 124 is slidably arranged inside the guiding impact rail 121. The sliding anti-rotation block 124 is fixedly matched with the impact head 114, and a sliding sleeve 122 is fixedly installed on the sliding anti-rotation block 124, and a toggle pin 123 is fixedly arranged on the sliding sleeve 122; the lower surface of the test table 102 is located on both sides of the guiding impact rail 121 and fixedly installed with two parallel sliding bracket fixing beams 147, and a sliding bracket fixing beam 147 is fixedly installed between the two sliding bracket fixing beams 147. Two parallel adjustable impact rod sliding brackets 143 are provided, and an adjustable impact rod 144 is slidably provided on the two adjustable impact rod sliding brackets 143. The adjusting impact rod 144 is provided with threaded holes at the positions of the two adjusting impact rod sliding brackets 143. The threaded holes are provided with adjusting screws 145 for fixing the adjusting impact rod 144 on the two adjusting impact rod sliding brackets 143. A pad 146 is also overlapped between one of the sliding bracket fixed beams 147 and the adjusting impact rod 144, and the pad 146 is magnetically matched with the test table 102. A sliding sleeve guide slide bar 141 is also fixedly installed on the two sliding bracket fixing beams 147, wherein the sliding sleeve 122 is slidably installed on the sliding sleeve guide slide bar 141, and an impact tension spring 142 is also arranged around the sliding sleeve guide slide bar 141, and the two ends of the impact tension spring 142 are fixedly matched with one of the sliding bracket fixing beams 147 and the sliding sleeve 122; an impact transmission belt bracket 148 is also fixedly installed on the test table 102, and an impact transmission belt 139 is rotatably installed on the impact transmission belt bracket 148, and the impact transmission belt 139 is driven by an impact driving motor 138 fixed on the impact transmission belt bracket 148, and an impact paddle 140 is fixedly arranged on the edge of the impact transmission belt 139, and the impact paddle 140 is in contact with the toggle pin 123, and is used to toggle the sliding sleeve 122 to slide on the sliding sleeve guide slide bar 141.On the base 101, a reset electromagnet 107 is fixedly installed overhead through a reset electromagnet bracket 106. The reset electromagnet 107 is located above the support disk 112 and is coaxially arranged with the support disk 112. A reset guide rod 108 is fixedly installed at the axis center of the reset electromagnet 107. A magnetic attraction block 109 and an air separation tube column 110 are slidably sleeved on the reset guide rod 108. The magnetic attraction block 109 and the air separation tube column 110 are integrally arranged. An extrusion plate 111 is fixed at the bottom end of the air separation tube column 110. The extrusion plate 111 is also slidably sleeved on the reset guide rod 108. A pulling sleeve 128 is fixedly and integrally arranged at the center of the lower surface of the extrusion plate 111. The pulling sleeve 128 is slidably sleeved on the reset guide rod 108, and a chamfer is arranged at the bottom end of the pulling sleeve 128. This chamfer is used to guide the disc spring onto the outer surface of the pulling sleeve 128, so that the disc spring is sleeved on the pulling sleeve 128. An annular clamping groove 130 is also opened at the bottom end of the pulling sleeve 128.

[0027] A test electromagnet 116 is fixedly installed at the coaxial position directly below the support disk 112 on the base 101. A pull-down guide rod support disk 117 is sleeved and fixed on the outer surface of the test electromagnet 116. Three pull-down guide rods 118 are slidably installed on the pull-down guide rod support disk 117. One end of each of the three pull-down guide rods 118 close to the test table 102 is fixedly fitted with an attraction test plate 120. A reset spring 119 is arranged around each pull-down guide rod 118. The two ends of the reset spring 119 are fixedly fitted with the attraction test plate 120 and the pull-down guide rod support disk 117. The attraction test plate 120 is magnetically fitted with the test electromagnet 116. A switching gear disk 127 and an engaging gear 126 are rotatably installed by embedding inside the attraction test plate 120. The engaging gear 126 and the switching gear disk 127 are in meshing transmission. An engaging motor 125 is also fixedly installed on the attraction test plate 120. The output shaft of the engaging motor 125 is fixedly fitted with the engaging gear 126. An embedding disk 129 is coaxially and fixedly installed on the switching gear disk 127. A radial sliding groove 133 is arranged in the radial direction inside the embedding disk 129. A U-shaped card 132 is slidably arranged in the radial sliding groove 133. A permanent magnet 131 is fixedly arranged at one end of the radial sliding groove 133. The permanent magnet 131 is magnetically fitted with the U-shaped card 132. A clamping-through hole 134 is opened at the center of the embedding disk 129. The pulling sleeve 128 can pass through the clamping-through hole 134, so that the annular clamping groove 130 is flush with the U-shaped card 132, and the U-shaped card 132 is in clamping connection with the annular clamping groove 130.

[0028] The working principle of a disc spring fatigue testing machine for aviation disclosed by the present invention is as follows: Stack the disc springs to be tested in the storage cylinder 104, and then control the telescopic rod of the electric cylinder 135. The telescopic rod of the electric cylinder 135 drives the rack 136 to move, the rack 136 drives the swing gear 137 to rotate, the swing gear 137 drives the storage cylinder swing rod 105 to swing, the storage cylinder swing rod 105 drives the storage cylinder 104 to swing, and then swing the storage cylinder 104 above the placement and separation groove 115. At this time, the disc spring in the storage cylinder 104 will fall into the placement and separation groove 115. Since the placement and separation groove 115 is concave, only the bottommost disc spring enters the placement and separation groove 115. Continue to swing the storage cylinder 104 to the initial position. Under the restriction of the placement and separation groove 115, the second-to-last disc spring in the storage cylinder 104 will be separated from the lowermost disc spring. At this time, control the impact drive motor 138. The impact drive motor 138 drives the impact transmission belt 139 to rotate, and the impact flap 140 on the impact transmission belt 139 will push the push pin 123 to move. The push pin 123 drives the sliding sleeve block 122 to slide on the sliding sleeve block guiding slide rod 141. At the same time, the sliding sleeve block 122 will drive the impact head 114 to move through the sliding anti-rotation block 124. When the impact flap 140 moves to the end position, the impact flap 140 will be separated from the push pin 123. At this time, under the action of the impact tension spring 142, the sliding sleeve block 122 will drive the impact head 114 to quickly move towards the disc spring, so that the impact head 114 impacts the disc spring. The impact force can be controlled by adjusting the position of the adjusting impact rod 144 on the adjusting impact rod sliding bracket 143, because the movement range of the sliding sleeve block 122 is restricted by the adjusting impact rod 144 (the sliding sleeve block 122 will collide with the adjusting impact rod 144, so as to control the actual working time of the sliding sleeve block 122). After determining the position of the adjusting impact rod 144 on the adjusting impact rod sliding bracket 143, place a spacer 146 with a suitable size between the sliding bracket fixed beam 147 and the adjusting impact rod 144 to ensure that the position of the adjusting impact rod 144 remains unchanged. The functions of loading and unloading are realized through the kinetic energy exchange of the disc spring, reducing the number of structural settings and the failure rate.

[0029] For the test of the first disc spring, it is necessary to manually place the disc spring at the center of the support plate 112. After testing the first one, then control the impact drive motor 138, and then let the impact head 114 impact the disc spring in the placement and separation groove 115, so that the disc spring in the placement and separation groove 115 impacts the disc spring on the support plate 112 to transfer the kinetic energy, so as to exchange the positions of the two disc springs.

[0030] Before the test, the reset electromagnet 107 is powered on, and the reset electromagnet 107 attracts the magnetic block 109. During the test, the reset electromagnet 107 needs to be powered off, and the magnetic block 109 is separated from the reset electromagnet 107. Under the action of gravity, the magnetic block 109, the spacer column 110, the extrusion plate 111, and the pulling sleeve 128 move downward together (under the guidance of the reset guide rod 108), and then the pulling sleeve 128 passes through the center of the disc spring (the chamfer at the bottom of the pulling sleeve 128 can be used to guide the disc spring). shaped spring), at this time, the bottom end of the pulling sleeve 128 is inserted into the card-in through hole 134, and then the pulling sleeve 128 is contacted with the switching toothed disc 127. After contact, the two are electrically connected, which serves as a signal for stopping the engagement motor 125 and starting the test electromagnet 116 (the test electromagnet 116 is delayed to start). Before the pulling sleeve 128 is inserted into the card-in through hole 134, the engagement motor 125 needs to be started, and the output shaft of the engagement motor 125 drives the engagement gear 126 to rotate, and the engagement gear 126 drives The switching toothed disc 127 rotates, and the switching toothed disc 127 drives the embedded disc 129 to rotate. At this time, the U-shaped card 132 inside the radial slot 133 is separated from the permanent magnet 131 by the centrifugal force. When the pulling sleeve 128 is inserted into the card insertion hole 134, the motor 125 stops engaging. At this time, the embedded disc 129 stops rotating, and the U-shaped card 132 is no longer subjected to the centrifugal force and is attracted and contacted with the permanent magnet 131 again. At this time, the U-shaped card 132 is inserted into the annular card slot 130, and the pulling sleeve is inserted into the card insertion hole 134. The tube 128 is stuck in the insertion hole 134, and then the test electromagnet 116 is started. The test electromagnet 116 is started intermittently. The test electromagnet 116 generates magnetic force to attract the test plate 120. The attraction of the test plate 120 will drive the embedded disk 129 to move together. Since the pulling sleeve 128 is stuck in the insertion hole 134, the extrusion plate 111 on the pulling sleeve 128 will also move. The extrusion plate 111 will continuously squeeze the disc spring, and the disc spring can be fatigue tested at this time. After the test, stop the test electromagnet 116, restart the engagement motor 125, separate the insertion hole 134 from the annular groove 130, and then start the reset electromagnet 107 to pull the pulling sleeve 128 out of the disc spring, and then repeat the above steps to perform fatigue tests on multiple disc springs.

Claims

1. An aviation disc spring fatigue testing machine, characterized in that: The test table (102) comprises an accelerating slide groove (113) and a placing and separating groove (115) provided on the test table (102), the accelerating slide groove (113) and the placing and separating groove (115) being arranged in communication with each other, and a supporting plate (112) is also embedded on the test table (102), the upper surface of the supporting plate (112) being arranged flush with the accelerating slide groove (113) and the placing and separating groove (115), so that the disc spring can slide without obstruction; A material storage barrel (104) is slidably disposed on the upper surface of the test table (102) at a position where the separation groove (115) is placed, and disc springs are stacked inside the material storage barrel (104) for feeding the disc springs inside the material storage barrel (104) into the separation groove (115); wherein an impact head (114) is slidably disposed in the acceleration slide groove (113) for striking the disc springs in the separation groove (115) to move them to the center of the support plate (112).

2. The disc spring fatigue testing machine for aviation according to claim 1, characterized in that: The test table (102) is suspended and fixed above the base (101) via four supporting legs (103); an electric cylinder (135) is fixedly mounted on the lower surface of the test table (102); a rack (136) is fixedly mounted on the end of the telescopic rod of the electric cylinder (135); the rack (136) is slidably matched with the lower surface of the test table (102); and a swing gear (137) meshing with the rack (136) is rotatably mounted on the lower surface of the test table (102); wherein the material storage barrel (104) is fixedly mounted on the material storage barrel swing rod (105); the material storage barrel swing rod (105) is rotatably mounted on the test table (102); and the test table (102) and the swing gear (137) are fixedly rotated synchronously via a rotating shaft.

3. The disc spring fatigue testing machine for aviation according to claim 2, characterized in that: The test table (102) is provided with a guiding impact slide rail (121) located inside the accelerating slide rail groove (113), a sliding anti-rotation block (124) is slidably arranged inside the guiding impact slide rail (121), the sliding anti-rotation block (124) is fixedly matched with the impact head (114), a sliding sleeve block (122) is fixedly mounted on the sliding anti-rotation block (124), and a toggle pin (123) is fixedly arranged on the sliding sleeve block (122); The lower surface of the test table (102) is fixedly mounted with two parallel sliding bracket fixing beams (147) on both sides of the guiding impact slide rail (121); two parallel adjusting impact rod sliding brackets (143) are fixedly mounted between the two sliding bracket fixing beams (147); adjusting impact rods (144) are slidably mounted on the two adjusting impact rod sliding brackets (143); threaded holes are provided at the positions of the adjusting impact rods (144) located on the two adjusting impact rod sliding brackets (143); adjusting screws (145) are threadedly mounted in the threaded holes for fixing the adjusting impact rods (144) on the two adjusting impact rod sliding brackets (143); and a cushion block (146) is overlapped between one of the sliding bracket fixing beams (147) and the adjusting impact rod (144); the cushion block (146) is magnetically matched with the test table (102).

4. The disc spring fatigue testing machine for aviation according to claim 3, characterized in that: A sliding sleeve guide slide bar (141) is also fixedly mounted on the two sliding bracket fixing beams (147), wherein the sliding sleeve (122) is slidably mounted on the sliding sleeve guide slide bar (141), and an impact tension spring (142) is also arranged around the sliding sleeve guide slide bar (141), and both ends of the impact tension spring (142) are fixedly matched with one of the sliding bracket fixing beams (147) and the sliding sleeve (122); An impact transmission belt bracket (148) is also fixedly mounted on the test table (102), an impact transmission belt (139) is rotatably mounted on the impact transmission belt bracket (148), the impact transmission belt (139) is driven by an impact drive motor (138) fixed on the impact transmission belt bracket (148), an impact paddle (140) is fixedly arranged on the edge of the impact transmission belt (139), the impact paddle (140) is in contact with and cooperates with a driving pin (123), and is used to drive the sliding sleeve (122) to slide on the sliding sleeve guide slide rod (141).

5. The disc spring fatigue testing machine for aviation according to claim 4, characterized in that: A reset electromagnet (107) is fixedly mounted on the base (101) via a reset electromagnet bracket (106). The reset electromagnet (107) is located above the support plate (112), and the reset electromagnet (107) and the support plate (112) are coaxially arranged. A reset guide rod (108) is fixedly mounted at the axis of the reset electromagnet (107). A magnetic block (109) and a spacer column (110) are slidably sleeved on the reset guide rod (108). The magnetic block (109) and the spacer column (110) are integrally arranged. An extrusion plate (111) is fixed at the bottom end of the spacer column (110). The extrusion plate (111) is also slidably sleeved on the reset guide rod (108).

6. The disc spring fatigue testing machine for aviation according to claim 5, characterized in that: A pulling sleeve (128) is fixedly provided at the center of the lower surface of the extrusion plate (111), and the pulling sleeve (128) is slidably sleeved on the reset guide rod (108), and a chamfer is provided at the bottom end of the pulling sleeve (128), and the chamfer is used to guide the disc spring to the outer surface of the pulling sleeve (128) so that the disc spring is sleeved on the pulling sleeve (128), wherein the bottom end of the pulling sleeve (128) is also provided with an annular groove (130).

7. The disc spring fatigue testing machine for aviation according to claim 6, characterized in that: A test electromagnet (116) is fixedly installed at a coaxial position on the base (101) directly below the support plate (112); a pull-down guide rod bracket plate (117) is fixedly mounted on the outer surface of the test electromagnet (116); three pull-down guide rods (118) are slidably installed on the pull-down guide rod bracket plate (117); one end of the three pull-down guide rods (118) close to the test table (102) is fixedly matched with the attraction test plate (120); a return spring (119) is arranged around each pull-down guide rod (118); and both ends of the return spring (119) are fixedly matched with the attraction test plate (120) and the pull-down guide rod bracket plate (117).

8. The disc spring fatigue testing machine for aviation according to claim 7, characterized in that: The attraction test plate (120) is magnetically matched with the test electromagnet (116), and a switching toothed disc (127) and a mating gear (126) are rotatably mounted inside the attraction test plate (120), and the mating gear (126) and the switching toothed disc (127) are meshed and driven. A mating motor (125) is also fixedly mounted on the attraction test plate (120), and an output shaft of the mating motor (125) is fixedly matched with the mating gear (126), and an embedded disc (129) is coaxially fixedly mounted on the switching toothed disc (127).

9. The disc spring fatigue testing machine for aviation according to claim 8, characterized in that: A radial slide groove (133) is provided in the radial direction inside the embedded disk (129), a U-shaped card (132) is slidably provided inside the radial slide groove (133), a permanent magnet (131) is fixedly provided at one end of the radial slide groove (133), and magnetic force cooperates between the permanent magnet (131) and the U-shaped card (132).

10. The disc spring fatigue testing machine for aviation according to claim 9, characterized in that: A snap-in through hole (134) is provided at the center of the embedded disk (129), wherein the pulling sleeve (128) can pass through the snap-in through hole (134), so that the annular snap groove (130) is flush with the U-shaped snap card (132), and the U-shaped snap card (132) is snap-fitted with the annular snap groove (130).

Images