CN120028000A - A vibration test equipment for magnesium alloy rear armrest of electric vehicles - Google Patents
A vibration test equipment for magnesium alloy rear armrest of electric vehicles Download PDFInfo
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- CN120028000A CN120028000A CN202510504303.5A CN202510504303A CN120028000A CN 120028000 A CN120028000 A CN 120028000A CN 202510504303 A CN202510504303 A CN 202510504303A CN 120028000 A CN120028000 A CN 120028000A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/06—Multidirectional test stands
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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Abstract
本发明涉及物理震动测试设备技术领域，且公开了一种电动车镁合金后扶手配套用震动测试设备，包括测试台架，还包括：升降板，上下活动设置于测试台架的顶部；滑动板，滑动安装在升降板顶部开设的滑槽中，用于承载扶手本体；压套，卡套并压紧在扶手本体的顶部。该电动车镁合金后扶手配套用震动测试设备，通过升降板和滑动板的组合设计，能够实现对扶手本体上下和前后方向的同步震动测试，全面模拟扶手在实际使用中的多维度载荷工况，然后通过对测试数据的收集和物理分析，能够评估扶手在实际使用中的力学性能和载荷响应，从而全面评价扶手的多维度性能优劣，保证了测试的真实性和全面性。
The present invention relates to the technical field of physical vibration testing equipment, and discloses a vibration testing equipment for a magnesium alloy rear armrest of an electric vehicle, comprising a test bench, and also comprising: a lifting plate, movably arranged on the top of the test bench; a sliding plate, slidably installed in a slide groove opened on the top of the lifting plate, for carrying the armrest body; a pressing sleeve, clamped and pressed on the top of the armrest body. The vibration testing equipment for a magnesium alloy rear armrest of an electric vehicle, through the combined design of the lifting plate and the sliding plate, can realize synchronous vibration testing of the armrest body in the up and down and front and back directions, comprehensively simulate the multi-dimensional load conditions of the armrest in actual use, and then through the collection and physical analysis of the test data, can evaluate the mechanical properties and load response of the armrest in actual use, thereby comprehensively evaluating the advantages and disadvantages of the multi-dimensional performance of the armrest, and ensuring the authenticity and comprehensiveness of the test.
Description
Technical Field
The invention relates to the technical field of physical vibration testing equipment, in particular to vibration testing equipment matched with a magnesium alloy rear handrail of an electric vehicle.
Background
With the rapid development of the electric vehicle industry, vehicle weight reduction has become an important direction for improving the performance and energy efficiency of the whole vehicle. Magnesium alloy is widely used for manufacturing electric vehicle accessories, such as rear armrests of electric vehicles, due to the advantages of low density, high specific strength, good damping performance and the like. However, magnesium alloy materials also have certain drawbacks such as low fatigue limit and impact resistance, and thus, the rear armrest of magnesium alloy is easily cracked, deformed, and even broken due to long-time vibration or impact during actual use. Therefore, it is necessary to perform a comprehensive mechanical test on the vibration performance of the magnesium alloy rear armrest.
The traditional vibration test equipment mostly adopts the unipolar vibration mode, and the test object only can carry out single motion along vertical direction or horizontal direction promptly, is difficult to realize the synchronous vibration test of upper and lower and fore-and-aft direction, and this leads to its multidimensional load that can't simulate the handrail comprehensively and receive in the in-service use. In addition, the vibration testing equipment on the market at present cannot apply intermittent instant pressure to the test piece, so that the vibration test is difficult to restore the instant stress environment of the handrail under special working conditions such as jolt, external stress (such as pushing by a hand back support) and the like, and the authenticity and reference value of a test result are further limited, especially for magnesium alloy with poor impact resistance.
Based on the above, we provide a vibration test device for the magnesium alloy rear handrail of the electric vehicle.
Disclosure of Invention
(One) solving the technical problems
Aiming at the defects of the prior art, the invention provides vibration testing equipment for the magnesium alloy rear handrail of the electric vehicle, which has the advantages of being capable of realizing synchronous vibration testing in the up-down and front-back directions and being capable of applying instantaneous pressure to the magnesium alloy rear handrail to test the impact resistance of the magnesium alloy rear handrail.
(II) technical scheme
In order to realize the purposes of realizing the synchronous vibration test in the vertical and front-rear directions and exerting the instantaneous pressure on the magnesium alloy rear handrail to test the impact resistance, the invention provides the technical scheme that the vibration test equipment for the magnesium alloy rear handrail of the electric vehicle comprises a test bench and further comprises:
the lifting plate is arranged at the top of the test bench in an up-and-down movable way;
the sliding plate is slidably arranged in a sliding groove formed in the top of the lifting plate and is used for bearing the handrail body;
The pressing sleeve is sleeved with the sleeve and pressed on the top of the handrail body;
The pressing sleeve is arranged on the cross arm through a compactor at the top of the pressing sleeve, the end part of the cross arm is connected to the pressing mechanism, and the pressing mechanism can provide intermittent instant pressure on the handrail body through the cross arm, the compactor and the pressing sleeve.
As a preferable technical scheme of the invention, a connecting plate is fixedly arranged at the bottom of the lifting plate, the bottom end of the connecting plate penetrates through the test bench and is fixedly connected with a rectangular frame, an eccentric wheel is rotatably arranged in the rectangular frame, and the eccentric wheel is driven by an offset driving shaft.
As a preferable technical scheme of the invention, the tail end of the driving shaft is fixedly connected with a rotating arm, the other end of the rotating arm is hinged with a lower hinge rod, the other end of the lower hinge rod is hinged with a vertical rod, the middle part of the vertical rod is rotatably arranged on a fixed seat through a central shaft, and the fixed seat is fixedly arranged on the side surface of the test bench;
The top of montant articulates there is the hinge pole, the other end of going up the hinge pole rotates and installs in the connecting seat, connecting seat fixed mounting is in the sliding plate tip.
As a preferable technical scheme of the invention, the compactor comprises a push rod, an inner plate, a fixed cylinder and a lower supporting spring, wherein the top of the pressing sleeve is fixedly connected with the inner plate through the push rod, the inner plate is vertically movably arranged in the fixed cylinder and is supported downwards through the lower supporting spring, and the fixed cylinder is arranged on the cross arm.
As a preferable technical scheme of the invention, the pressing mechanism comprises a mounting plate, an inner shift plate, a piston, a vertical cabinet, a supporting spring, a bracket, a support arm and a communicating pipe;
The side of the top of the sliding plate is supported by a support arm, a vertical cabinet is fixedly arranged on the support arm, a piston is movably arranged in the vertical cabinet up and down, an inner shifting plate is fixedly arranged at the bottom of the piston and is supported by a supporting spring, a mounting plate is fixedly arranged on the side surface of the inner shifting plate, and the end part of the cross arm is fixedly arranged on the mounting plate;
One side of the top of the vertical cabinet is connected with a gas supply mechanism through a communicating pipe for instantaneously introducing gas, and the other side of the top of the vertical cabinet is provided with a fine hole for exhausting gas.
As a preferable technical scheme of the invention, the air supply mechanism comprises a gas holder, a movable plug, a transverse spring, a push rod and a push plate;
the side of the top of the lifting plate is fixedly provided with a gas holder, the gas holder is communicated with the vertical cabinet through a communicating pipe, and the communicating pipe is provided with a one-way exhaust valve;
The gas holder is also provided with a one-way air inlet valve;
The movable plug is movably arranged in the gas holder and supported by the transverse spring, the other side of the movable plug is fixedly connected with the push plate by the push rod, and the push plate can be pushed by the sliding plate.
As a preferable technical scheme of the invention, the top of the test bench is fixedly provided with the upright rod, the top end of the upright rod is fixedly connected with the connecting arm, the tail end of the connecting arm is fixedly connected with the loading rod, the loading rod is provided with a plurality of movable sleeves, the movable sleeves are connected with the impact ball through the elastic rod, and when the armrest body is driven by the lifting plate to move upwards, the armrest body can collide on the impact ball.
As a preferable technical scheme of the invention, the movable sleeve is sleeved on the loading rod in a sliding way;
the outer wall of the loading rod is convexly provided with a spline, the spline is slidably arranged in a spline groove, and the spline groove is formed in the inner wall of the movable sleeve.
As a preferable technical scheme of the invention, the pressing sleeve is a rubber sleeve, and the bottom of the pressing sleeve is provided with a clamping groove for being clamped on the handrail body.
As a preferred technical solution of the present invention, the compactor is slidably mounted on the cross arm.
(III) beneficial effects
Compared with the prior art, the invention provides vibration testing equipment for the magnesium alloy rear handrail of the electric vehicle, which has the following beneficial effects:
1. According to the vibration testing equipment for the magnesium alloy rear handrail of the electric vehicle, through the combined design of the lifting plate and the sliding plate, synchronous vibration testing on the up-down direction and the front-back direction of the handrail body can be realized, the multidimensional load working condition of the handrail in actual use is comprehensively simulated, and then the mechanical property and the load response of the handrail in actual use can be evaluated through collection and physical analysis of test data, so that the multidimensional performance quality of the handrail is comprehensively evaluated, and the authenticity and the comprehensiveness of the test are ensured.
2. The vibration testing equipment for the magnesium alloy rear handrail of the electric vehicle is capable of exerting pressure on the handrail body through the pressure exerting mechanism, reducing the instant stress environment of the handrail body under special working conditions such as jolt, external stress (such as pressing by a hand back support) and the like, and providing a more real and reliable basis for evaluating the fatigue performance and bearing capacity of the magnesium alloy material.
3. The vibration testing equipment for the magnesium alloy rear handrail of the electric vehicle is matched with the vibration testing equipment, and can simulate extra impact possibly born by the handrail body in actual use through the impact of the handrail body on the impact ball, evaluate the impact resistance and the stress concentration effect of the handrail body, and further improve the comprehensiveness of the handrail body test.
Drawings
FIG. 1 is an isometric view of the present invention;
FIG. 2 is a second perspective view of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is an enlarged schematic view of a lifter plate portion of the present invention;
FIG. 5 is a cross-sectional view of a stationary barrel portion of the present invention;
FIG. 6 is a cross-sectional view of a vertical cabinet portion of the present invention;
FIG. 7 is an enlarged schematic view of a loading rod portion of the present invention;
fig. 8 is a side view of the body portion of the armrest of the present invention.
In the figure, 1, a test bench, 2, a lifting plate, 3, a chute, 4, a sliding plate, 5, a handrail body, 6, a driving shaft, 7, an eccentric wheel, 8, a rectangular frame, 9, a connecting plate, 10, a rotating arm, 11, a lower hinge rod, 12, a vertical rod, 13, a fixed seat, 14, an upper hinge rod, 15, a connecting seat, 16, a pressing sleeve, 17, a push rod, 18, an inner plate, 19, a fixed cylinder, 20, a lower supporting spring, 21, a cross arm, 22, a mounting plate, 23, an inner moving plate, 24, a piston, 25, a vertical cabinet, 26, a supporting spring, 27, a bracket, 28, a supporting arm, 29, a communicating pipe, 30, a gas holder, 31, a moving plug, 32, a transverse spring, a push rod, 34, a push plate, 35, a vertical rod, 36, a connecting arm, 37, a loading rod, 38, a moving sleeve, 39, an elastic rod, 40 and an impact ball.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
Referring to fig. 1-4, a vibration test device for a magnesium alloy rear handrail of an electric vehicle comprises a test bench 1, wherein the test bench 1 can be fixed on the ground through supporting legs, and can also be mounted on the side surface of a workbench, in short, the fixing mode can be kept, and a person skilled in the art can select the fixing mode according to requirements.
In this embodiment, the lifting plate 2 is movably disposed on the top of the test bench 1, specifically, as shown in fig. 3, a connecting plate 9 is fixedly disposed at the bottom of the lifting plate 2, the bottom end of the connecting plate 9 passes through the test bench 1 and is fixedly connected with a rectangular frame 8, an eccentric wheel 7 is rotatably disposed in the rectangular frame 8, the eccentric wheel 7 is driven by an offset driving shaft 6, the driving shaft 6 is driven by a motor, when the driving shaft 6 drives the eccentric wheel 7 to rotate, the eccentric wheel 7 can drive the rectangular frame 8 to move up and down, and the rectangular frame 8 can drive the lifting plate 2 to move up and down through the connecting plate 9, so as to realize up-and-down vibration.
As shown in fig. 2, a sliding plate 4 is slidably installed in a chute 3 formed in the top of a lifting plate 2, specifically, the tail end of a driving shaft 6 is fixedly connected with a rotating arm 10, the other end of the rotating arm 10 is hinged with a lower hinge rod 11, the other end of the lower hinge rod 11 is hinged with a vertical rod 12, the middle part of the vertical rod 12 is rotatably installed on a fixed seat 13 through a middle shaft, the fixed seat 13 is fixedly installed on the side surface of a test bench 1, the top end of the vertical rod 12 is hinged with an upper hinge rod 14, the other end of the upper hinge rod 14 is rotatably installed in a connecting seat 15, a connecting seat 15 is fixedly installed at the end of the sliding plate 4, when the driving shaft 6 drives an eccentric wheel 7 to rotate so as to enable the lifting plate 2 to move up and down, the rotating arm 10 is also driven to rotate, the rotating arm 10 rotates to pull or push the lower hinge rod 11, then the upper hinge rod 14 can be pulled or pushed through the transmission of the vertical rod 12, further, the sliding plate 4 can slide in the chute 3 through the sliding plate 4 back and forth in the chute 3, the vibration test of a vibration handrail body 5 can be realized in a mechanical manner.
In this embodiment, the armrest body 5 of magnesium alloy is fixed on the sliding plate 4, so that synchronous vibration testing of the armrest body 5 in the up-down and front-back directions can be realized, the multidimensional load working condition of the armrest in actual use is comprehensively simulated, and the authenticity and comprehensiveness of the testing are improved.
The armrest body 5 is fixed to the sliding plate 4 by means of a bolt, in particular, by means of its own Z-shaped leg.
As shown in fig. 4, a pressing sleeve 16 is further sleeved on the top of the armrest body 5, the pressing sleeve 16 is a rubber sleeve, a clamping groove for being clamped on the armrest body 5 is formed in the bottom of the pressing sleeve, and the actual stress of the armrest body 5 when being held by hands can be simulated through the clamping sleeve of the pressing sleeve 16 on the top of the armrest body 5, so that the authenticity and reliability of a test result are ensured.
Embodiment two:
referring to fig. 5-7, on the basis of the first embodiment, a pressing mechanism is added in the present embodiment, and the pressing mechanism can provide intermittent instant pressure on the handrail body 5 through the cross arm 21, the compactor and the pressing sleeve 16, so as to simulate and restore the instant stress environment of the handrail body 5 under special working conditions such as jolt, external stress (such as pressing with a back support) and the like, and provide a more real and reliable basis for evaluating the fatigue performance and the bearing capacity of the magnesium alloy material.
As shown in fig. 4, the pressing sleeve 16 is mounted on the cross arm 21 through a compactor at the top of the pressing sleeve, and the end part of the cross arm 21 is connected to the pressing mechanism;
In this embodiment, the compactor includes ejector pin 17, inner panel 18, fixed cylinder 19 and lower support spring 20, and the top of pressing sleeve 16 is through ejector pin 17 fixedly connected with inner panel 18, and inner panel 18 upper and lower activity sets up in fixed cylinder 19 to prop up downwards through lower support spring 20, fixed cylinder 19 locates on the xarm 21, through the downward supporting force that lower support spring 20 provided, can make pressing sleeve 16 can remain inseparable contact with handrail body 5 all the time to guarantee stable exerting pressure effect.
In the invention, the pressing mechanism comprises a mounting plate 22, an inner shift plate 23, a piston 24, a vertical cabinet 25, a supporting spring 26, a bracket 27, a support arm 28 and a communicating pipe 29, as shown in fig. 6, the bracket 27 is supported by the side of the top of the sliding plate 4 through the support arm 28, the vertical cabinet 25 is fixedly arranged on the bracket 27, the piston 24 is movably arranged in the vertical cabinet 25 up and down, the inner shift plate 23 is fixedly arranged at the bottom of the piston 24, the inner shift plate 23 is supported by the supporting spring 26, the mounting plate 22 is fixedly arranged on the side surface of the inner shift plate 23, the end part of the cross arm 21 is fixedly arranged on the mounting plate 22, one side of the top of the vertical cabinet 25 is connected with a gas supply mechanism through the communicating pipe 29 for instantaneously introducing gas, and the other side of the top of the vertical cabinet 25 is provided with a pore for discharging gas.
The air supply mechanism specifically comprises an air tank 30, a movable plug 31, a transverse spring 32, a push rod 33 and a push plate 34, as shown in fig. 6, the air tank 30 is fixedly arranged on the side of the top of the lifting plate 2, the air tank 30 is communicated with the vertical cabinet 25 through a communicating pipe 29, a one-way exhaust valve is arranged on the communicating pipe 29, a one-way air inlet valve is further arranged on the air tank 30, the movable plug 31 is movably arranged in the air tank 30, the movable plug 31 is supported by the transverse spring 32, the other side of the movable plug 31 is fixedly connected with the push plate 34 through the push rod 33, the push plate 34 can be pushed by the sliding plate 4, when the sliding plate 4 moves left and right (in view of fig. 6), the push plate 34 can be circularly pushed to move, and then the movable plug 31 can be circularly moved, when the movable plug 31 moves right, the air in the air tank 30 can be filled into the vertical cabinet 25 through the communicating pipe 29, and then instantaneous pressure is provided;
Therefore, in this embodiment, when the sliding plate 4 moves left and right to simulate left and right vibration, the air supply mechanism and the pressing mechanism can circularly press the instant pressure on the armrest body 5, so as to restore the instant stress environment of the armrest body 5 under special working conditions such as jolt, external stress (such as pressing by a back support of a hand) and the like, thereby providing a more real and reliable basis for evaluating the fatigue performance and the bearing capacity of the magnesium alloy material.
In the invention, the compactor is slidably arranged on the cross arm 21, the position of the compactor is adjustable, so that the multi-point test on the armrest body 5 is facilitated, and a specific adjusting mode can be selected by a person skilled in the art according to actual needs, for example, a screw rod can be rotatably arranged in the cross arm 21, a screw nut is connected with the outer wall of the screw rod through threads, and the screw nut is fixedly connected with the compactor.
Embodiment III:
Referring to fig. 2, 7 and 8, in the first embodiment or the second embodiment, a vertical rod 35 is fixedly installed at the top of the test bench 1, a connecting arm 36 is fixedly connected to the top of the vertical rod 35, a loading rod 37 is fixedly connected to the end of the connecting arm 36, a plurality of moving sleeves 38 are installed on the loading rod 37, each moving sleeve 38 is connected with a striking ball 40 through an elastic rod 39, and when the armrest body 5 is driven by the lifting plate 2 to move upwards, the armrest body 5 impacts on the striking ball 40, so as to simulate the impact load;
In this embodiment, the moving sleeve 38 is slidably sleeved on the loading rod 37, specifically, the outer wall of the loading rod 37 is protruding to form a spline, the spline is slidably disposed in a spline groove, the spline groove is formed on the inner wall of the moving sleeve 38, and the position of the moving sleeve 38 can be freely adjusted on the loading rod 37 through the cooperation of the spline and the spline groove, so as to adapt to the testing requirements of the handrail body 5 with different sizes, and the pressing sleeve 16 is also conveniently avoided.
The resilient lever 39 is bendable and provides a cushioning capability for the impact ball 40 so that the test can be made closer to the actual conditions.
Through the impact test of the impact ball 40, the embodiment can reproduce the stress concentration condition of the handrail caused by the action of external force in the vehicle vibration, evaluate the impact resistance and fatigue life of the handrail, and can fully cover the performance of the handrail under complex load by combining the vibration test in the first embodiment and the instantaneous pressure test in the second embodiment, thereby providing scientific basis for the design and optimization of the magnesium alloy handrail.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. Vibration test equipment for supporting of electric motor car magnesium alloy back handrail, including test bench (1), its characterized in that still includes:
the lifting plate (2) is vertically movably arranged at the top of the test bench (1);
the sliding plate (4) is slidably arranged in a chute (3) formed in the top of the lifting plate (2) and is used for bearing the handrail body (5);
the pressing sleeve (16) is sleeved with the sleeve and pressed on the top of the handrail body (5);
The pressing sleeve (16) is arranged on the cross arm (21) through a pressing device at the top of the pressing sleeve, the end part of the cross arm (21) is connected to a pressing mechanism, and the pressing mechanism can provide intermittent instant pressure on the handrail body (5) through the cross arm (21), the pressing device and the pressing sleeve (16).
2. The vibration test device for the magnesium alloy rear handrail of the electric vehicle, which is matched with the vibration test device, is characterized in that a connecting plate (9) is fixedly arranged at the bottom of the lifting plate (2), the bottom end of the connecting plate (9) penetrates through the test bench (1) and is fixedly connected with a rectangular frame (8), an eccentric wheel (7) is rotatably arranged in the rectangular frame (8), and the eccentric wheel (7) is driven by an offset driving shaft (6).
3. The vibration test device for the magnesium alloy rear handrail of the electric vehicle, which is matched with the vibration test device according to claim 2, is characterized in that the tail end of the driving shaft (6) is fixedly connected with a rotating arm (10), the other end of the rotating arm (10) is hinged with a lower hinge rod (11), the other end of the lower hinge rod (11) is hinged with a vertical rod (12), the middle part of the vertical rod (12) is rotatably arranged on a fixed seat (13) through a middle shaft, and the fixed seat (13) is fixedly arranged on the side surface of the test bench (1);
the top end of the vertical rod (12) is hinged with an upper hinge rod (14), the other end of the upper hinge rod (14) is rotatably arranged in a connecting seat (15), and the connecting seat (15) is fixedly arranged at the end part of the sliding plate (4).
4. The vibration testing device for the magnesium alloy rear handrail of the electric vehicle according to claim 1, wherein the compactor comprises an ejector rod (17), an inner plate (18), a fixing cylinder (19) and a lower supporting spring (20), the top of the pressing sleeve (16) is fixedly connected with the inner plate (18) through the ejector rod (17), the inner plate (18) is vertically movably arranged in the fixing cylinder (19) and is supported downwards through the lower supporting spring (20), and the fixing cylinder (19) is arranged on the cross arm (21).
5. The vibration testing device for the magnesium alloy rear armrest of the electric vehicle according to claim 1 or 4, wherein the pressing mechanism comprises a mounting plate (22), an inner moving plate (23), a piston (24), a vertical cabinet (25), a supporting spring (26), a bracket (27), a support arm (28) and a communicating pipe (29);
The side of the top of the sliding plate (4) is supported by a bracket (27) through a support arm (28), a vertical cabinet (25) is fixedly arranged on the bracket (27), a piston (24) is movably arranged in the vertical cabinet (25) up and down, an inner moving plate (23) is fixedly arranged at the bottom of the piston (24), the inner moving plate (23) is supported by a support spring (26), a mounting plate (22) is fixedly arranged on the side surface of the inner moving plate (23), and the end part of the cross arm (21) is fixedly arranged on the mounting plate (22);
one side at the top of the vertical cabinet (25) is connected with a gas supply mechanism through a communicating pipe (29) for instantaneously introducing gas, and the other side at the top of the vertical cabinet (25) is provided with a fine hole for exhausting gas.
6. The vibration testing device for the magnesium alloy rear armrest of the electric vehicle according to claim 5, wherein the air supply mechanism comprises a gas holder (30), a movable plug (31), a transverse spring (32), a push rod (33) and a push plate (34);
The side of the top of the lifting plate (2) is fixedly provided with a gas holder (30), the gas holder (30) is communicated with the vertical cabinet (25) through a communicating pipe (29), and the communicating pipe (29) is provided with a one-way exhaust valve;
A unidirectional air inlet valve is further arranged on the gas holder (30);
The movable plug (31) is movably arranged in the gas holder (30), the movable plug (31) is supported by a transverse spring (32), the other side of the movable plug (31) is fixedly connected with a push plate (34) by a push rod (33), and the push plate (34) can be pushed by the sliding plate (4).
7. The vibration test device for the magnesium alloy rear handrail of the electric vehicle according to claim 1, wherein the top of the test bench (1) is fixedly provided with a vertical rod (35), the top end of the vertical rod (35) is fixedly connected with a connecting arm (36), the tail end of the connecting arm (36) is fixedly connected with a loading rod (37), a plurality of movable sleeves (38) are arranged on the loading rod (37), the movable sleeves (38) are connected with an impact ball (40) through elastic rods (39), and when the handrail body (5) is driven by a lifting plate (2) to move upwards, the handrail body (5) can collide on the impact ball (40).
8. The vibration testing device for the magnesium alloy rear armrest of the electric vehicle according to claim 7, wherein the movable sleeve (38) is slidably sleeved on the loading rod (37);
The outer wall of the loading rod (37) is convexly provided with a spline, the spline is slidably arranged in a spline groove, and the spline groove is formed in the inner wall of the movable sleeve (38).
9. The vibration testing device for the magnesium alloy rear handrail of the electric vehicle, as set forth in claim 1, is characterized in that the pressing sleeve (16) is a rubber sleeve, and the bottom of the pressing sleeve is provided with a clamping groove for being clamped on the handrail body (5).
10. The vibration testing device for the magnesium alloy rear handrail of the electric vehicle, which is matched with the magnesium alloy rear handrail of the electric vehicle, according to claim 1 or 4, is characterized in that the compactor is slidably arranged on the cross arm (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510504303.5A CN120028000B (en) | 2025-04-22 | 2025-04-22 | A vibration test equipment for magnesium alloy rear armrest of electric vehicles |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510504303.5A CN120028000B (en) | 2025-04-22 | 2025-04-22 | A vibration test equipment for magnesium alloy rear armrest of electric vehicles |
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| CN120028000A true CN120028000A (en) | 2025-05-23 |
| CN120028000B CN120028000B (en) | 2025-07-01 |
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