Landing cushion testing device

Abstract

The application relates to a landing cushion testing device, belonging to the technical field of testing equipment, which comprises a base, a lifting support, a hand-operated lifting mechanism, a winch, a sliding trolley and a traction trolley, the hand-operated lifting mechanism and the winch are both installed on the base, one side of the lifting support is rotatably arranged on the base, the hand-operated lifting mechanism is used for driving the lifting support to perform angle adjustment, and the sliding trolley and the traction trolley are both rollingly arranged on the surface of the lifting support. The application is provided with the lifting support, the hand-operated lifting mechanism, the winch, the sliding trolley and the traction trolley, the wheel suspension complete components and the counterweight are installed on the sliding trolley, so that the vehicle body mass is simulated, the sliding trolley is lifted to a certain height by the winch, the sliding trolley is released through the traction trolley, the constraint of the vehicle body mass is removed, the vehicle body mass accelerates under the action of gravity until the wheels contact the simulated moon surface, the wheels and the suspension start to cushion and consume energy, the wheel acceleration, the vehicle body acceleration and other information in the process are recorded, and experimental data are collected.

Description

Technical Field

[0001] This application relates to the technical field of testing equipment, and in particular to a landing buffer testing device. Background Technology

[0002] Currently, in order to test the energy dissipation performance of the integrated landing buffer suspension system and verify the load-bearing performance of the in-wheel suspension system, it is urgent to develop a testing device to conduct suspension and other buffer performance tests and verifications and load-bearing performance verifications under lunar low gravity simulation conditions. Utility Model Content

[0003] The purpose of this application is to provide a landing buffer testing device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this application provides a landing buffer testing device using the following technical solution:

[0005] A landing buffer testing device includes a base, a lifting bracket, a hand-cranked lifting mechanism, a winch, a sliding trolley, and a traction trolley. The hand-cranked lifting mechanism and the winch are both mounted on the base. The lifting bracket is rotatably mounted on the base on one side. The hand-cranked lifting mechanism is used to drive the lifting bracket to adjust its angle. The sliding trolley and the traction trolley are both rolled on the surface of the lifting bracket. The winch is used to pull the traction trolley. The traction trolley is used to pull the sliding trolley. A connecting seat is fixed on the sliding trolley. A locking mechanism is installed on the traction trolley. The traction trolley is connected to the connecting seat through the locking mechanism for pulling. The sliding trolley is provided with a mounting seat for assembling a complete set of wheel suspension components, and several counterweights are symmetrically arranged on both sides of the mounting seat.

[0006] The lifting bracket is provided with an installation frame on the side near the rotation point. A detachable impact base plate is fixed to the side of the installation frame. A detachable impact plate is fixed to the surface of the detachable impact base plate. A pulley is fixed to the side of the lifting bracket away from the installation frame.

[0007] The locking mechanism includes a mounting frame, a servo motor, a reducer, a lead screw, a connector, an extrusion block, and multiple rollers. The reducer and the servo motor are mounted inside the mounting frame. The servo motor drives the lead screw to rotate via the reducer. The connector is fixed to the side of the mounting frame and is adapted to the connecting seat. The extrusion block is a square block that is movably disposed within the connector and threaded onto the lead screw. Extrusion grooves are formed on the periphery of the extrusion block, and a roller is disposed in each extrusion groove. Arc-shaped extrusion portions are provided on both sides of the extrusion groove. A clearance groove is formed on the connector corresponding to the position of the extrusion groove. The length of the clearance groove is greater than the length of the roller, and the width of the clearance groove is less than the diameter of the roller. A locking groove is formed on the inner wall of the connecting seat corresponding to the position of the clearance groove. The roller can be fitted and locked in the locking groove, and arc-shaped extension portions are provided on both sides of the locking groove.

[0008] The hand-cranked lifting mechanism includes a slide, a lead screw, a hinge joint, a lifting rod, a commutator, a transmission rod, and a hand crank. The slide is fixed on the base, the commutator is fixed on the slide, the lead screw is installed inside the commutator, the transmission rod is rotatably connected to the base, the hand crank is installed at the end of the transmission rod, the hinge joint is connected to the end of the lead screw and can slide along the slide, the bottom end of the lifting rod is hinged in the hinge joint, and the top end of the lifting rod is hinged to the bottom end of the lifting bracket.

[0009] Preferably, an anti-slip mechanism is provided on the lifting bracket next to the sliding trolley. The anti-slip mechanism includes a synchronizing rod and anti-detachment components at both ends of the synchronizing rod. The anti-detachment components include a guide groove, a lifting block, a guide rod, a spring, an eccentric wheel, and a hand lever. The guide groove is fixed to the bottom of the lifting bracket. The lifting block is movably disposed in the guide groove, and the top of the lifting block can extend out of the lifting bracket. Guide rods are symmetrically fixed on both sides of the bottom end of the lifting block. A spring is sleeved on the surface of the guide rod. An adjustment groove is opened on the surface of the lifting block. The eccentric wheel is disposed in the adjustment groove. The synchronizing rod passes through and is fixed on the eccentric wheels on both sides. A hand lever is connected to one end of the synchronizing rod. A slot is fixed next to the guide groove on one side. The hand lever can be folded and can be locked in the slot.

[0010] By adopting the above technical solution and by setting an anti-falling mechanism, under normal conditions, the lifting block extends out of the lifting bracket under the elastic force of the spring, which can prevent the sliding trolley from sliding down and causing an accident when the locking mechanism malfunctions during the installation of the entire wheel suspension component and counterweight.

[0011] Preferably, the side of the sliding trolley is also provided with a limiting groove, and the side of the lifting bracket is equipped with a limiting component. The limiting component includes a fixing block, a limiting block and an adjusting screw. The fixing block is fixed to the side of the lifting bracket, the limiting block is movably disposed in the fixing block, the adjusting screw is threadedly connected to the fixing block, and the end of the adjusting screw is rotatably connected to the side of the limiting block. The limiting block can be locked in the limiting groove.

[0012] By adopting the above technical solution, when the device is not used for a long time, the lifting bracket can be laid flat and the sliding trolley can be pushed to the side of the limiting component. By rotating the adjusting screw, the limiting block can be locked in the limiting groove of the sliding trolley, thereby fixing the sliding trolley for a long time.

[0013] The base has symmetrical support plates fixed on both sides of its top end. The surface of the support plate has an arc-shaped groove. Several screw holes are evenly arranged on the side of the arc-shaped groove. The side of the lifting bracket can move along the arc-shaped groove, and the side of the lifting bracket is provided with a locking block.

[0014] Preferably, to improve testing safety, the surface of the lifting bracket is also covered with a protective cover.

[0015] In summary, this application includes at least one of the following beneficial technical effects: The landing buffer test device is equipped with a lifting support, a hand-cranked lifting mechanism, a winch, a sliding trolley, and a traction trolley. The sliding trolley is equipped with a complete set of wheel suspension components and counterweights to simulate the mass of the vehicle body. It is then lifted to a certain height by the winch and released by the traction trolley, thus relieving the constraint of the vehicle body mass. Under the action of gravity, it accelerates until the wheels contact the simulated lunar surface, and the wheels and suspension begin to buffer and consume energy. The wheel acceleration, vehicle body acceleration, and other information during this process are recorded to collect experimental data. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0017] Figure 2 This is a structural schematic diagram of the hidden protective shield state in the embodiments of this application.

[0018] Figure 3 This is a structural schematic diagram illustrating the hand-cranked lifting mechanism in the embodiments of this application.

[0019] Figure 4 This is a schematic diagram illustrating the connection relationship between the sliding trolley and the traction trolley in the embodiments of this application.

[0020] Figure 5 This is an exploded structural diagram illustrating the locking mechanism in the embodiments of this application.

[0021] Figure 6yes Figure 5 Enlarged view of section A.

[0022] Figure 7 This is a structural schematic diagram illustrating the anti-slip mechanism in the embodiments of this application.

[0023] Figure 8 This is a schematic diagram illustrating the structure of the limiting component in the embodiments of this application.

[0024] Explanation of reference numerals in the attached drawings: 1. Base; 11. Bearing plate; 111. Arc groove; 112. Screw hole; 2. Lifting bracket; 21. Mounting frame; 22. Removable impact base plate; 23. Removable impact plate; 24. Locking block; 3. Hand-cranked lifting mechanism; 31. Slide seat; 32. Lead screw; 33. Hinge joint; 34. Lifting rod; 35. Reversing device; 36. Transmission rod; 37. Hand crank wheel; 4. Winch; 5. Sliding trolley; 51. Connecting seat; 511. Locking groove; 5111. Arc extension; 52. Mounting seat; 53. Counterweight; 54. Limiting groove; 6. Traction trolley; 61. Locking mechanism 611. Mounting bracket; 612. Servo motor; 613. Reducer; 614. Lead screw; 615. Plug-in connector; 6151. Clearance groove; 616. Extrusion block; 6161. Extrusion groove; 6162. Arc-shaped extrusion section; 617. Roller; 7. Complete wheel suspension assembly; 8. Anti-slip mechanism; 81. Synchronizing rod; 82. Guide groove; 83. Lifting block; 831. Adjustment groove; 84. Guide rod; 85. Spring; 86. Eccentric wheel; 87. Hand lever; 88. Slot; 9. Limiting assembly; 91. Fixing block; 92. Limiting block; 93. Adjusting screw; 10. Protective cover. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0026] This application discloses a landing buffer testing device, referring to... Figure 1-8 The system includes a base 1, a lifting bracket 2, a hand-cranked lifting mechanism 3, a winch 4, a sliding trolley 5, and a traction trolley 6. The hand-cranked lifting mechanism 3 and the winch 4 are both mounted on the base 1. The lifting bracket 2 is rotatably mounted on the base 1 on one side. The hand-cranked lifting mechanism 3 is used to drive the lifting bracket to adjust its angle. The sliding trolley 5 and the traction trolley 6 are both rolled on the surface of the lifting bracket 2. The winch 4 is used to pull the traction trolley 6 to move. The traction trolley 6 is used to pull the sliding trolley 5. A connecting seat 51 is fixed on the sliding trolley 5. A locking mechanism 61 is installed on the traction trolley 6. The traction trolley 6 is pulled by the connecting seat 51 through the locking mechanism 61. The sliding trolley 5 is provided with a mounting seat 52 for assembling the complete set of wheel suspension components 7, and several counterweights 53 are symmetrically arranged on both sides of the mounting seat 52.

[0027] Specifically, refer to Figure 4-6 The locking mechanism 61 includes a mounting bracket 611, a servo motor 612, a reducer 613, a lead screw 614, a connector 615, an extrusion block 616, and multiple rollers 617. The reducer 613 and the servo motor 612 are mounted inside the mounting bracket 611. The servo motor 612 drives the lead screw 614 to rotate via the reducer 613. The connector 615 is fixed to the side of the mounting bracket 611 and is adapted to the connecting seat 51. The extrusion block 616 is a square block and is movably disposed inside the connector 615. The extrusion block 616 is threadedly connected to the lead screw 614. The 16 sides are provided with extrusion grooves 6161, and each extrusion groove 6161 is provided with a roller 617. Arc-shaped extrusion parts 6162 are provided on both sides of the extrusion groove 6161. The plug seat 615 is provided with a relief groove 6151 corresponding to the position of the extrusion groove 6161. The length of the relief groove 6151 is greater than the length of the roller 617, and the width of the relief groove 6151 is less than the diameter of the roller 617. The inner wall of the connecting seat 51 is provided with a locking groove 511 corresponding to the position of the relief groove 6151. The roller 617 can be fitted and locked in the locking groove 511, and arc-shaped extension parts 5111 are provided on both sides of the locking groove 511.

[0028] The locking mechanism 61 has a safe and reliable overall structure and a fast separation speed. It uses the squeezing block 616 to lift the roller 617, and the roller 617 is locked in the locking groove 511 to achieve locking and fixation. When the contact area between the roller 617 and the locking groove 511 is small, it can be quickly disengaged, which can reduce the squeezing damage to the connecting seat 51 at the moment of separation.

[0029] A mounting frame 21 is provided on the side of the lifting bracket 2 near the rotation point. A detachable impact base plate 22 is fixed to the side of the mounting frame 21. A detachable impact plate 23 is fixed to the surface of the detachable impact base plate 22. The detachable impact plate 23 can be made of various materials, such as steel plate, wood plate, and rubber plate, during simulation. A pulley is fixed on the side of the lifting bracket 2 away from the mounting frame 21.

[0030] Reference Figure 3The hand-cranked lifting mechanism 3 includes a slide 31, a lead screw 32, a hinge joint 33, a lifting rod 34, a commutator 35, a transmission rod 36, and a hand crank 37. The slide 31 is fixed on the base 1, the commutator 35 is fixed on the slide 31, the lead screw 32 is installed inside the commutator 35, the transmission rod 36 is rotatably connected to the base 1, the hand crank 37 is installed at the end of the transmission rod 36, the hinge joint 33 is connected to the end of the lead screw 32, and the hinge joint 33 can slide along the slide 31. The bottom end of the lifting rod 34 is hinged in the hinge joint 33, and the top end of the lifting rod 34 is hinged to the bottom end of the lifting bracket 2. The top two sides of the base 1 are symmetrically fixed with bearing plates 11. The surface of the bearing plate 11 is provided with an arc-shaped groove 111. Several screw holes 112 are evenly arranged on the side of the arc-shaped groove 111. The side of the lifting bracket 2 can move along the arc-shaped groove 111, and the side of the lifting bracket 2 is provided with a locking block 24.

[0031] Reference Figure 7 An anti-slip mechanism 8 is provided on the lifting bracket 2 next to the sliding trolley 5. The anti-slip mechanism 8 includes a synchronizing rod 81 and anti-detachment components at both ends of the synchronizing rod 81. The anti-detachment components include a guide groove 82, a lifting block 83, a guide rod 84, a spring 85, an eccentric wheel 86, and a hand lever 87. The guide groove 82 is fixed to the bottom of the lifting bracket 2. The lifting block 83 is movably disposed in the guide groove 82, and the top of the lifting block 83 can extend out of the lifting bracket 2. The guide rods 84 are symmetrically fixed on both sides of the bottom end of the lifting block 83. The springs 85 are sleeved on the surface of the guide rods 84. The lifting block 83 has an adjustment groove 831. The eccentric wheel 86 is disposed in the adjustment groove 831. The synchronizing rod 81 passes through and is fixed on the eccentric wheels 86 on both sides. One end of the synchronizing rod 81 is connected to a hand lever 87. A slot 88 is fixed next to the guide groove 82 on one side. The hand lever 87 can be folded and can be locked in the slot 88.

[0032] By setting an anti-fall-off mechanism, under normal conditions, the lifting block 83 extends out of the lifting bracket 2 under the elastic force of the spring 85. This can prevent the locking mechanism 61 from malfunctioning and causing the sliding trolley 5 to slide down and cause an accident when installing the entire wheel suspension component 7 and the counterweight block 53.

[0033] Reference Figure 2 , Figure 4 and Figure 8 The sliding trolley 5 is also provided with a limit groove 54 on its side. The lifting bracket 2 is installed with a limit component 9 on its side. The limit component 9 includes a fixed block 91, a limit block 92 and an adjusting screw 93. The fixed block 91 is fixed to the side of the lifting bracket 2. The limit block 92 is movably disposed in the fixed block 91. The adjusting screw 93 is threadedly connected to the fixed block 91, and the end of the adjusting screw 93 is rotatably connected to the side of the limit block 92. The limit block 92 can be locked in the limit groove 54.

[0034] When the device is not used for a long time, the lifting bracket 2 is laid flat and the sliding trolley 5 is pushed to the side of the limiting component 9. By rotating the adjusting screw 93, the limiting block 92 is locked in the limiting groove 54 of the sliding trolley 5, so that the sliding trolley 5 can be fixed for a long time.

[0035] Reference Figure 1 The surface of the lifting support 2 is also covered with a protective cover 10.

[0036] The implementation principle of a landing buffer test device according to an embodiment of this application is as follows:

[0037] Before use, a speed sensor is installed on the sliding trolley 5, and cameras are installed at multiple locations on the lifting bracket 2 to record the motion during the test. Test plan: The vehicle body mass is simulated and lifted to a certain height by a winch. Then, the constraint of the vehicle body mass is released by releasing the locking mechanism 61. Under the action of gravity, the vehicle body accelerates until the wheels contact the simulated lunar surface. The wheels and suspension begin to buffer and consume energy. The wheel acceleration, vehicle body acceleration and other information during this process are recorded to collect experimental data.

[0038] When using, such as Figure 1 and Figure 2 As shown, the lifting bracket 2 is adjusted to the test angle by hand-cranking lifting mechanism 3, and the lifting bracket 2 is manually locked by locking blocks 24 on both sides to ensure safety. After that, the complete set of wheel suspension components 7 to be tested is installed on the mounting seat 52 of the sliding trolley 5, and the counterweight 53 is installed on the sliding trolley 5. The servo motor 612 in the locking mechanism 61 drives the lead screw 614 to rotate through the reducer 613. The lead screw 614 drives the extrusion block 616 to move. When the roller 617 disengages from the arc-shaped extrusion part 6162, the sliding trolley 5 will quickly disengage from the traction trolley 6 under the action of gravity and slide down. The speed sensor and camera record the entire test process, which is then analyzed by computer.

[0039] During the retest, the winch 4 lowers the traction trolley 6 to the side of the sliding trolley 5. The plug-in seat 615 on the traction trolley 6 is inserted into the connecting seat 51. At this time, the roller 617 rolls into the extrusion groove 6161 of the extrusion block 616 under its own weight. After that, the servo motor 612 drives the lead screw 614 through the reducer 613 to push the extrusion block 616 to move. The extrusion block 616 pushes the roller 617 to the arc-shaped extrusion part 6162, thereby lifting the roller 617. The lifted roller 617 is locked into the locking groove 511 in the connecting seat 51, thereby locking the connecting seat 51 and the locking mechanism 61 together. Then the winch 4 pulls the sliding trolley 5 back to the origin.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A landing buffer test device, characterized in that: The system includes a base (1), a lifting bracket (2), a hand-cranked lifting mechanism (3), a winch (4), a sliding trolley (5), and a traction trolley (6). The hand-cranked lifting mechanism (3) and the winch (4) are both mounted on the base (1). The lifting bracket (2) is rotatably mounted on one side of the base (1). The hand-cranked lifting mechanism (3) is used to drive the lifting bracket (2) for angle adjustment. The sliding trolley (5) and the traction trolley (6) are both rolled on the surface of the lifting bracket (2). The winch... The machine (4) is used to pull the traction trolley (6) to move. The traction trolley (6) is used to pull the sliding trolley (5). The sliding trolley (5) has a fixed connecting seat (51). The traction trolley (6) is equipped with a locking mechanism (61). The traction trolley (6) is pulled by the connecting seat (51) through the locking mechanism (61). The sliding trolley (5) is provided with a mounting seat (52) for assembling the complete set of wheel suspension components (7). Several counterweights (53) are symmetrically arranged on both sides of the mounting seat (52). The lifting bracket (2) is provided with an installation frame (21) on the side near the rotation point. A detachable impact base plate (22) is fixed on the side of the installation frame (21). A detachable impact plate (23) is fixed on the surface of the detachable impact base plate (22). A pulley is fixed on the side of the lifting bracket (2) away from the installation frame (21).

2. The landing buffer test device according to claim 1, characterized in that: The locking mechanism (61) includes a mounting bracket (611), a servo motor (612), a reducer (613), a lead screw (614), a connector (615), a pressing block (616), and multiple rollers (617). The reducer (613) and the servo motor (612) are mounted inside the mounting bracket (611). The servo motor (612) drives the lead screw (614) to rotate via the reducer (613). The connector (615) is fixed to the side of the mounting bracket (611) and is adapted to the connecting seat (51). The pressing block (616) is a square block that is movably disposed inside the connector (615) and is threadedly connected to the lead screw (614). The extrusion block (616) has extrusion grooves (6161) on all sides, and each extrusion groove (6161) is provided with a roller (617). The extrusion groove (6161) has arc-shaped extrusion parts (6162) on both sides. The plug-in seat (615) has a relief groove (6151) corresponding to the position of the extrusion groove (6161). The length of the relief groove (6151) is greater than the length of the roller (617), and the width of the relief groove (6151) is less than the diameter of the roller (617). The inner wall of the connecting seat (51) has a locking groove (511) corresponding to the position of the relief groove (6151). The roller (617) can be fitted and locked in the locking groove (511), and the locking groove (511) has arc-shaped extensions (5111) on both sides.

3. The landing buffer test device according to claim 1, characterized in that: The hand-cranked lifting mechanism (3) includes a slide (31), a lead screw (32), a hinge joint (33), a lifting rod (34), a commutator (35), a transmission rod (36), and a hand crank (37). The slide (31) is fixed on the base (1), the commutator (35) is fixed on the slide (31), the lead screw (32) is installed inside the commutator (35), the transmission rod (36) is rotatably connected to the base (1), the hand crank (37) is installed at the end of the transmission rod (36), the hinge joint (33) is connected to the end of the lead screw (32), and the hinge joint (33) can slide along the slide (31). The bottom end of the lifting rod (34) is hinged inside the hinge joint (33), and the top end of the lifting rod (34) is hinged to the bottom end of the lifting bracket (2).

4. The landing buffer test device according to claim 1, characterized in that: An anti-slip mechanism (8) is provided on the lifting bracket (2) next to the sliding trolley (5). The anti-slip mechanism (8) includes a synchronizing rod (81) and anti-detachment components at both ends of the synchronizing rod (81). The anti-detachment components include a guide groove (82), a lifting block (83), a guide rod (84), a spring (85), an eccentric wheel (86), and a hand lever (87). The guide groove (82) is fixed to the bottom of the lifting bracket (2). The lifting block (83) is movably disposed in the guide groove (82), and the top of the lifting block (83) can extend out of the lifting bracket (2). The lifting block (83) has guide rods (84) symmetrically fixed on both sides of its bottom end. The guide rods (84) are fitted with springs (85). The lifting block (83) has an adjustment groove (831) on its surface. The eccentric wheel (86) is set in the adjustment groove (831). The synchronizing rod (81) passes through and is fixed on the eccentric wheels (86) on both sides. One end of the synchronizing rod (81) is connected to a hand lever (87). A slot (88) is fixed next to the guide groove (82) on one side. The hand lever (87) can be folded and can be locked in the slot (88).

5. The landing buffer test device according to claim 1, characterized in that: The sliding trolley (5) is also provided with a limiting groove (54) on its side. The lifting bracket (2) is installed with a limiting component (9) on its side. The limiting component (9) includes a fixing block (91), a limiting block (92) and an adjusting screw (93). The fixing block (91) is fixed to the side of the lifting bracket (2). The limiting block (92) is movably disposed in the fixing block (91). The adjusting screw (93) is threadedly connected to the fixing block (91), and the end of the adjusting screw (93) is rotatably connected to the side of the limiting block (92). The limiting block (92) can be locked in the limiting groove (54).

6. The landing buffer test device according to claim 1, characterized in that: The base (1) has a bearing plate (11) symmetrically fixed on both sides of the top end. The bearing plate (11) has an arc groove (111) on its surface. The side of the arc groove (111) is evenly provided with a number of screw holes (112). The side of the lifting bracket (2) can move along the arc groove (111), and the side of the lifting bracket (2) is provided with a locking block (24).

7. The landing buffer test device according to claim 1, characterized in that: The surface of the lifting support (2) is also covered with a protective cover (10).

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