CN114235436A

CN114235436A - Automobile engine hood durability testing device

Info

Publication number: CN114235436A
Application number: CN202111546011.6A
Authority: CN
Inventors: 黄敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-03-25

Abstract

The invention relates to a testing device, in particular to a device for testing the durability of an automobile engine hood, which comprises a base, an L-shaped limiting plate, an L-shaped frame and the like, wherein the upper part of the left side surface of the base is fixedly connected with the L-shaped limiting plate used for limiting an automobile, and the middle of the outer top of the base is fixedly connected with the L-shaped frame. The push plate is moved to be in contact with the bottom of the automobile engine cover, the driving mechanism is started to operate, the push plate is driven to move upwards through the u-shaped sliding block, the push plate moves upwards to drive the automobile engine cover to swing upwards, the limiting mechanism operates to a proper position to suck and fix the automobile engine cover, when the push plate moves downwards and resets, the u-shaped sliding block drives the limiting mechanism to operate and reset, the limiting mechanism resets to loosen the automobile engine cover, the automobile engine cover swings downwards and resets, and the operation is repeated, so that the durability test can be performed on the automobile engine cover, and the durability test can be performed more stably.

Description

Automobile engine hood durability testing device

Technical Field

The invention relates to a testing device, in particular to a device for testing the durability of an automobile engine hood.

Background

After the automobile engine hood is manufactured, the final factory installation can be finished only by carrying out a plurality of tests, and in order to ensure the safety and the service life of the subsequent use of the automobile engine hood, the durability test of the automobile engine hood is generally carried out before the factory installation.

Chinese patent application No. CN201821306343.0 discloses an apparatus for durability test of an automobile hood, comprising: two parallel arrangement's slide rail, slider, spring, rotatory swing arm and sucking disc are equipped with two sections springs on two slide rails respectively, leave two through-holes that match with the slide rail on the slider, through the through-hole alternates between two sections springs on the slide rail, rotatory swing arm include with slider integrated into one piece's receiving portion, horizontal in rotation axis between the receiving portion and with the arm of rotation axis connection the lower extreme of arm passes through the nut and fixes the sucking disc. The device disclosed by the invention is simple in structure, eliminates the pulling force caused by the relative displacement of the rotary swing arm and the engine hood, and avoids secondary damage to the surface of the engine hood.

Therefore, based on the above mentioned limitations, there is a need for a durability testing device for an automobile hood that can drive the automobile hood to swing more stably to perform durability testing and avoid the falling-off phenomenon.

Disclosure of Invention

In order to overcome the defect that the durability test of the automobile engine hood can be carried out, but the automobile engine hood is sucked by the sucking disc to swing, and the falling phenomenon is easy to occur, so that the test is influenced, the invention provides the automobile engine hood durability test device which can more stably drive the automobile engine hood to swing to carry out the durability test and avoid the falling phenomenon.

The invention is realized by the following technical approaches:

the utility model provides an automobile engine hood durability testing arrangement, which comprises a base, L type limiting plate, L type frame, u type slider, the push pedal, actuating mechanism and stop gear, base left surface upper portion rigid coupling has and is used for carrying out spacing L type limiting plate to the car, the rigid coupling has L type frame in the middle of the outer top of base, the cross-under of the slidingtype of right flank lower part has u type slider in the L type frame, the outer left surface rigid coupling of u type slider has and is used for driving automobile engine hood wobbling push pedal, install the actuating mechanism who is used for driving u type slider removal between the inboard right part of L type frame and the base, actuating mechanism and the inboard fixed connection of u type slider, L type frame inboard is installed and is used for holding fixed stop gear with automobile engine hood, stop gear and the contact of u type slider.

Further, the driving mechanism comprises a driving motor, a screw rod and a nut, the screw rod is rotatably connected to the middle of the right side of the inner top of the L-shaped frame, the screw rod is sleeved with the nut used for driving the u-shaped sliding block to move through a thread rotating mode, the front end and the rear end of the nut are fixedly connected with the front side face and the rear side face of the inner side of the u-shaped sliding block respectively, the driving motor is installed in the middle of the outer top of the base, and the end portion of an output shaft of the driving motor is fixedly connected with the bottom end of the screw rod.

Further explaining, the limiting mechanism comprises an L-shaped sleeve, a movable rod, a wire guide roller, a pull wire, a magnetic block, a first spring and an elastic part, wherein the wire guide roller is rotatably connected between the upper parts of the front side surface and the rear side surface in the L-shaped frame at uniform intervals, the left side of the top in the L-shaped frame is uniformly connected with four first springs at uniform intervals, the magnetic block for sucking and fixing an automobile engine cover is fixedly connected between the tail ends of the four first springs, the L-shaped sleeve is installed between the upper parts of the left side surface and the right side surface of the right part in the L-shaped frame through a fixed block, the left end of the L-shaped sleeve is in contact with a u-shaped sliding block to be limited, the movable rod is placed in a sliding mode in the L-shaped sleeve, the elastic part is connected between the bottom end of the movable rod and the inner bottom of the L-shaped sleeve, the top end of the movable rod is connected with the pull wire for driving the magnetic block to move upwards to reset, and the tail end of the pull wire bypasses the three wire guide roller and is fixedly connected with the middle of the top of the magnetic block.

Further explaining, the automobile engine cover pushing device also comprises a pushing mechanism used for pushing the automobile engine cover to swing downwards, the pushing mechanism comprises a frame body, a ratchet strip, a pushing rod, a guide cylinder, a second spring, a grooved rack, a grooved clamping block, a ratchet wheel, a rotating gear, a rotating rod and a third spring, the frame body is fixedly connected between the two sides of the middle of the left side of the upper part of the L-shaped frame in a penetrating way, the guide cylinder is fixedly connected with the middle of the inner top of the frame body, the pushing rod used for driving the automobile engine cover to swing downwards is arranged in a sliding way in the guide cylinder, the top end of the pushing rod is connected with the second spring, the tail end of the second spring is contacted with the inner top of the guide cylinder, the grooved rack is fixedly connected with the upper part of the left side surface of the pushing rod, the grooved rack penetrates through the left side of the guide cylinder, the rotating rod is rotatably connected with the upper part of the outer left side surface of the frame body, the rotating gear used for driving the grooved rack to move upwards is fixedly sleeved in the middle of the rotating rod, the rotating gear is meshed with the grooved rack, all the rigid coupling in both sides has the ratchet around the bull stick, and the rigid coupling has the ratchet that is used for driving the ratchet reversal in the middle of the magnetic block top right side, and L type frame and ratchet meshing are run through on the ratchet top, and the cross-under of slidingtype has the trough of belt fixture block that is used for fixing the trough of belt rack in the middle of framework left side upper portion, and the groove and the contact of ratchet top of trough of belt fixture block have the third spring around the symmetrical connection between trough of belt fixture block top left side and the outer left surface upper portion of framework.

Further, the device also comprises a compression mechanism for adjusting the moving force of the pushing rod, the compression mechanism comprises a guide shaft, a wave groove disc, a contact plate, a T-shaped rod, a return block, a slide rod and a bevel gear, the T-shaped rod for compressing a second spring is slidably connected between the middle of the top of the guide cylinder and the top of the frame body in a penetrating manner, the outer bottom of the T-shaped rod is contacted with the tail end of the second spring, the return block is fixedly connected with the middle of the right side of the outer top of the frame body, the slide rod is slidably connected in the return block in a penetrating manner, the left end of the slide rod is fixedly connected with the contact plate for driving the T-shaped rod to move downwards, the contact plate is contacted with the top end of the T-shaped rod, the guide shaft is transversely and rotatably connected in the middle of the upper part of the L-shaped frame in a penetrating manner, the left end of the guide shaft is fixedly connected with the wave groove disc for driving the slide rod to move upwards and downwards, the right end of the slide rod is positioned in a groove of the wave groove disc, the upper part of the screw rod and the right end of the guide shaft are fixedly sleeved with the bevel gear, the two bevel gears are meshed.

Further explaining, still including being used for the chucking mechanism fixed with the movable rod, chucking mechanism is including returning the type frame, the kelly, fourth spring and trigger lever, draw-in groove has all been opened on front and back both sides movable rod lateral surface upper portion, all the rigid coupling has returned the type frame in the middle of the front and back both sides face in the L type frame, the cover of slidingtype between the upper and lower both sides of returning the type frame is equipped with the kelly that is used for fixed the movable rod, evenly spaced is connected with three fourth springs between kelly medial surface middle part and the type frame medial surface that returns, u type slider right side upper portion longitudinal symmetry rigid coupling has and is used for carrying out spacing trigger lever to the kelly, trigger lever and kelly lower part inclined plane contact.

Further explaining, the automobile engine hood further comprises a rubber plate and fifth springs, the middle of the top of the push plate is embedded and slidably connected with the rubber plate used for buffering an automobile engine hood, and nine fifth springs are uniformly connected between the bottom of the rubber plate and the inner side of the push plate at intervals.

The automobile engine hood guide device further comprises a fixed seat, a guide rod and a contact roller, the fixed seat is symmetrically and fixedly connected with the front side and the rear side of the left side face of the push plate, the guide rod is rotatably connected between the fixed seats on the front side and the rear side in a penetrating mode, and the contact roller for guiding the automobile engine hood is fixedly sleeved in the middle of the guide rod.

Compared with the prior art, the invention has the remarkable improvements that:

1. move the push pedal to with the contact of car bonnet bottom, start actuating mechanism function and drive the push pedal rebound through u type slider, the push pedal rebound drives car bonnet rebound, and stop gear function holds car bonnet to suitable position and fixes, when the push pedal rebound resets, u type slider drives stop gear function and resets, stop gear resets and loosens the car bonnet, the car bonnet swings down and resets, so relapse, can carry out the durability test to the car bonnet, so, can be more firm carry out the durability test.

2. Under the action of the pushing mechanism, when the magnetic block moves upwards and resets, the pushing mechanism can operate to violently push the automobile engine hood to swing downwards, so that the swinging force of the automobile engine hood is larger, and the durability of the automobile engine hood can be tested better.

3. Under clamping mechanism's effect, when the movable rod rebound was to suitable position, clamping mechanism can be fixed with the movable rod, and then the push pedal back that resets, clamping mechanism can loosen the movable rod, just also makes the automobile engine hood swing downwards reset, so, when the push pedal has not yet moved downwards and resets, can avoid automobile engine hood swing downwards to be blocked by the push pedal and influence the durability test.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of the present invention.

Fig. 2 is a schematic perspective view of a second embodiment of the present invention.

Fig. 3 is a third perspective view of the present invention.

Fig. 4 is a schematic diagram of a fourth three-dimensional structure according to the present invention.

FIG. 5 is a first partial cross-sectional structural schematic of the present invention.

FIG. 6 is a second partial sectional structural view of the present invention.

Fig. 7 is a third partial sectional structural schematic of the present invention.

Fig. 8 is a partial perspective view of the present invention.

Fig. 9 is a fourth partial sectional structural view of the present invention.

FIG. 10 is a schematic view of a fifth partial cross-sectional structure of the present invention.

FIG. 11 is a sixth partial sectional structural view of the present invention.

Fig. 12 is a seventh partial sectional structural view of the present invention.

Wherein the figures include the following reference numerals: 1. a base, 2, an L-shaped limit plate, 3, an L-shaped frame, 4, a u-shaped slide block, 5, a push plate, 6, a driving mechanism, 61, a driving motor, 62, a screw rod, 63, a nut, 7, a limit mechanism, 71, an L-shaped sleeve, 72, a movable rod, 73, a wire guide roller, 74, a pull wire, 75, a magnetic block, 76, a first spring, 77, an elastic element, 8, a material pushing mechanism, 81, a frame body, 82, a ratchet bar, 83, a material pushing rod, 84, a guide cylinder, 85, a second spring, 86, a grooved rack, 87, a grooved clamping block, 88, a ratchet wheel, 89, a rotating gear, 810, a rotating rod, 811, a third spring, 9, a compression mechanism, 91, a guide shaft, 92, a wave grooved disc, 93, a contact plate, 94, a T-shaped rod, 95, a clip-shaped block, 96, a sliding rod, 97, a bevel gear, 10, a clip mechanism, 101, a clip-shaped frame, 102, a clip rod, 103, a fourth spring, 104, a trigger rod, 105. the clamping groove 11, the rubber plate 12, the fifth spring 13, the fixing seat 14, the guide rod 15 and the contact roller.

Detailed Description

The invention is further explained by combining the drawings in the specification and the embodiments of the invention are given by combining the drawings in the specification.

Example 1

A durability test device for an automobile engine hood comprises a base 1, an L-shaped limiting plate 2, an L-shaped frame 3, a u-shaped sliding block 4, a push plate 5, a driving mechanism 6 and a limiting mechanism 7, please refer to fig. 1, fig. 2, fig. 4, fig. 5, fig. 6, fig. 7, fig. 10 and fig. 11, wherein the L-shaped limiting plate 2 is installed on the upper portion of the left side surface of the base 1 in a bolt connection mode, the L-shaped limiting plate 2 can limit the automobile, the L-shaped frame 3 is installed in the middle of the outer top of the base 1 in a bolt connection mode, the u-shaped sliding block 4 is slidably penetrated on the lower portion of the inner right side surface of the L-shaped frame 3, the outer left side surface of the u-shaped sliding block 4 is fixedly connected with the push plate 5, when the push plate 5 moves upwards, the push plate 5 can drive the automobile engine hood to swing upwards, the driving mechanism 6 is installed between the right portion of the inner side of the L-shaped frame 3 and the base 1, and the driving mechanism 6 is fixedly connected with the inner side of the u-shaped sliding block 4, when the driving mechanism 6 is started, the driving mechanism 6 can drive the u-shaped sliding block 4 to move, the limiting mechanism 7 is installed on the inner side of the L-shaped frame 3, when the automobile engine cover swings upwards to the maximum stroke, the limiting mechanism 7 can suck and fix the automobile engine cover, and the limiting mechanism 7 is in contact with the u-shaped sliding block 4.

The driving mechanism 6 includes a driving motor 61, a lead screw 62 and a nut 63, as shown in fig. 4-6, the lead screw 62 is rotatably connected to the middle of the right side of the inner top of the L-shaped frame 3, the nut 63 is rotatably sleeved on the lead screw 62 through a screw thread, the front and rear ends of the nut 63 are respectively installed with the front and rear sides of the inner side of the u-shaped slider 4 in a welding connection manner, when the nut 63 moves, the nut 63 can drive the u-shaped slider 4 to move, the driving motor 61 is installed in the middle of the outer top of the base 1, and the end of the output shaft of the driving motor 61 is connected with the bottom end of the lead screw 62 through a coupling.

The limiting mechanism 7 comprises an L-shaped sleeve 71, a movable rod 72, a wire guiding roller 73, a pulling wire 74, a magnetic block 75, a first spring 76 and an elastic member 77, please refer to fig. 4, fig. 5, fig. 7, fig. 10 and fig. 11, the wire guiding roller 73 is rotatably connected between the upper portions of the front and rear side surfaces in the L-shaped frame 3 at uniform intervals, four first springs 76 are connected at the left side of the top in the L-shaped frame 3 at uniform intervals, the magnetic block 75 is installed between the tail ends of the four first springs 76 in a welding connection manner, when the magnetic block 75 moves downwards to the outside of the L-shaped frame 3, the magnetic block 75 can suck and fix the automobile engine cover, the L-shaped sleeve 71 is installed between the upper portions of the left and right side surfaces in the right of the L-shaped frame 3 through a fixing block, the left end of the L-shaped sleeve 71 is contacted and limited with the u-shaped slider 4, the movable rod 72 is slidably placed in the L-shaped sleeve 71, the elastic member 77 is connected between the bottom end of the movable rod 72 and the inner bottom of the L-shaped sleeve, the top end of the movable rod 72 is connected with a pull wire 74, the tail end of the pull wire 74 bypasses the three wire guide rollers 73 and is fixedly connected with the middle of the top of the magnetic block 75, and when the pull wire 74 is rolled, the pull wire 74 can drive the magnetic block 75 to move upwards for resetting.

Firstly, an operator drives an automobile to the side of the device, and the contact between wheels and an L-shaped limiting plate 2 is limited, at the moment, a push plate 5 is inserted into the front part in the automobile to be contacted with an automobile engine cover, a driving mechanism 6 is started, the driving mechanism 6 operates to drive a u-shaped slide block 4 to move upwards, the u-shaped slide block 4 moves upwards to drive the push plate 5 to move upwards, the push plate 5 moves upwards to drive the automobile engine cover to swing upwards, the u-shaped slide block 4 moves upwards without limiting the limiting mechanism 7, the limiting mechanism 7 operates to a proper position, when the automobile engine cover swings upwards and is contacted with the limiting mechanism 7, the limiting mechanism 7 sucks and fixes the automobile engine cover, at the moment, the driving mechanism 6 operates to drive the u-shaped slide block 4 to move downwards to reset, the u-shaped slide block 4 resets to drive the push plate 5 to move downwards to reset, the push plate 5 resets to be separated from contact with the automobile engine cover, the u-shaped slide block 4 resets to drive the limiting mechanism 7 to reset, the limiting mechanism 7 operates to reset to loosen the automobile engine hood, and the automobile engine hood swings downwards to reset under the action of gravity, so that the durability can be tested by continuously swinging the automobile engine hood upwards and downwards repeatedly. After the durability test of the automobile engine hood is completed, the driving mechanism 6 is closed, the driving mechanism 6 stops driving the u-shaped sliding block 4 to move up and down, the push plate 5 stops moving up and down, the limiting mechanism 7 stops operating, and then the automobile is driven away to enable the wheels to be separated from the L-shaped limiting plate 2.

When the push plate 5 is contacted with the bottom of the automobile engine cover, the driving motor 61 is started, the driving motor 61 drives the lead screw 62 to rotate in a positive and negative alternating mode, the lead screw 62 rotates in a positive and negative alternating mode to drive the nut 63 to move up and down, when the nut 63 moves up, the nut 63 drives the u-shaped sliding block 4 to move up, the push plate 5 drives the automobile engine cover to swing up, when the automobile engine cover swings up and is fixed by the limiting mechanism 7, the nut 63 drives the u-shaped sliding block 4 to move down, the u-shaped sliding block 4 drives the push plate 5 to move down and reset to be separated from contact with the automobile engine cover, the u-shaped sliding block 4 resets to drive the limiting mechanism 7 to operate and reset, the limiting mechanism 7 resets to loosen the automobile engine cover, the automobile engine cover swings down and resets, and the durability test can be carried out by the push plate 5 moving up and down to drive the automobile engine cover to swing up and down. After the durability test of the automobile engine hood is completed, the driving motor 61 is turned off, the driving motor 61 stops driving the screw rod 62 to rotate forward and backward alternately, the screw rod 62 stops driving the nut 63 to move up and down, the nut 63 stops driving the u-shaped sliding block 4 to move up and down, and the push plate 5 also stops moving up and down.

Initially, the first spring 76 is in a compressed state, when the driving motor 61 is started, the u-shaped slider 4 moves upwards to not limit the position of the L-shaped sleeve 71, due to the action of the first spring 76, the magnetic block 75 moves downwards to drive the pull wire 74 to move downwards, the pull wire 74 moves downwards to drive the movable rod 72 to move upwards through the three wire guide rollers 73, the movable rod 72 moves upwards to drive the L-shaped sleeve 71 to move upwards through the elastic member 77, the magnetic block 75 moves downwards to the outside of the L-shaped frame 3, and further when the automobile engine cover swings upwards to contact the magnetic block 75, the magnetic block 75 sucks and fixes the automobile engine cover, at this time, the u-shaped slider 4 drives the push plate 5 to move downwards to reset, when the u-shaped slider 4 moves downwards to reset to contact the L-shaped sleeve 71, the u-shaped slider 4 drives the L-shaped sleeve 71 to move downwards, the L-shaped sleeve 71 moves downwards to drive the movable rod 72 to move downwards through the elastic member 77, the movable rod 72 moves downwards to drive the stay wire 74 to move downwards for resetting, the stay wire 74 moves downwards to drive the magnetic block 75 to move upwards for resetting, the first spring 76 is compressed, the magnetic block 75 moves upwards for resetting to be separated from the contact with the automobile engine hood, the automobile engine hood swings downwards for resetting under the action of gravity, and the operation is repeated, so that the automobile engine hood can swing upwards and downwards continuously to test the durability. When the driving motor 61 is turned off, the u-shaped slider 4 stops moving, the L-shaped sleeve 71 stops moving up and down, and the magnetic block 75 stops moving up and down.

Example 2

On the basis of embodiment 1, the automobile engine cover pushing device further comprises a pushing mechanism 8, the pushing mechanism 8 comprises a frame 81, a ratchet bar 82, a pushing rod 83, a guide cylinder 84, a second spring 85, a grooved rack 86, a grooved fixture block 87, a ratchet 88, a rotating gear 89, a rotating rod 810 and a third spring 811, please refer to fig. 1, fig. 2, fig. 3, fig. 4, fig. 6, fig. 7 and fig. 8, the frame 81 is fixedly connected between the two sides of the middle of the left side of the upper portion of the L-shaped frame 3 in a penetrating manner, the guide cylinder 84 is installed in the middle of the top portion of the inner portion of the frame 81 in a welding connection manner, the pushing rod 83 is slidably placed in the guide cylinder 84, when the pushing rod 83 moves downward, the pushing rod 83 can drive the automobile engine cover to swing downward, the top end of the pushing rod 83 is connected with the second spring 85, the second spring 85 is in contact with the top portion of the guide cylinder 84, the upper portion of the tail end of the pushing rod 83 is installed with the grooved rack 86 in a welding connection manner, the grooved rack 86 penetrates the left side of the guide cylinder 84, the upper part of the outer left side surface of the frame 81 is rotatably connected with a rotating rod 810, the middle part of the rotating rod 810 is fixedly sleeved with a rotating gear 89, the rotating gear 89 is meshed with the grooved rack 86, when the rotating gear 89 rotates reversely, the rotating gear 89 can drive the grooved rack 86 to move upwards, the front side and the rear side of the rotating rod 810 are both provided with ratchets 88 in a welding connection mode, the middle part of the right side of the top part of the magnetic block 75 is provided with a ratchet bar 82 in a welding connection mode, the top end of the ratchet bar 82 penetrates through the L-shaped frame 3 to be meshed with the ratchets 88, when the ratchet bar 82 moves downwards, the ratchet bar 82 can drive the ratchets 88 to rotate reversely, the middle part of the upper part of the left side of the frame 81 is slidably connected with a grooved fixture block 87, when the grooved fixture 87 is inserted into the groove of the grooved rack 86, the grooved fixture 87 can fix the grooved rack 86, the groove of the fixture 87 is contacted with the top end of the ratchet bar 82, third springs 811 are symmetrically connected between the left side of the top of the grooved latch 87 and the upper portion of the outer left side of the frame 81.

The compression mechanism 9 is further included, the compression mechanism 9 includes a guide shaft 91, a wave-shaped trough plate 92, a contact plate 93, a T-shaped rod 94, a return-shaped block 95, a sliding rod 96 and a bevel gear 97, please refer to fig. 1, fig. 2, fig. 3, fig. 5, fig. 6 and fig. 9, the T-shaped rod 94 is slidably connected between the middle of the top of the guide cylinder 84 and the top of the frame 81, the outer bottom of the T-shaped rod 94 contacts with the tail end of the second spring 85, when the T-shaped rod 94 moves downward, the T-shaped rod 94 can compress the second spring 85, the return-shaped block 95 is installed at the middle of the right side of the outer top of the frame 81 by welding, the sliding rod 96 is slidably connected in the return-shaped block 95, the contact plate 93 is installed at the left end of the sliding rod 96 by welding, the contact plate 93 contacts with the top end of the T-shaped rod 94, when the contact plate 93 moves downward, the contact plate 93 can drive the T-shaped rod 94 to move downward, the middle of the upper portion of the L-shaped frame 3 is transversely connected with a guide shaft 91 in a rotating mode in a penetrating mode, the left end of the guide shaft 91 is fixedly connected with a wave groove disc 92, the right end of a sliding rod 96 is located in a groove of the wave groove disc 92, when the wave groove disc 92 rotates, the wave groove disc 92 can drive the sliding rod 96 to move up and down, bevel gears 97 are fixedly sleeved on the upper portion of the screw rod 62 and the right end of the guide shaft 91, and the two bevel gears 97 are meshed with each other.

The clamping mechanism 10 further comprises a clamping mechanism 10, the clamping mechanism 10 comprises a clip frame 101, a clamping rod 102, fourth springs 103 and a trigger rod 104, please refer to fig. 10 and 11, clamping grooves 105 are formed in the upper portions of the outer side surfaces of the movable rods 72 on the front side and the rear side, the clip frame 101 is mounted in the middle of the front side surface and the rear side surface in the L-shaped frame 3 in a bolt connection mode, the clip rod 102 is slidably mounted between the upper side and the lower side of the clip frame 101, when the clamping rod 102 is inserted into the clamping grooves 105, the movable rods 72 can be fixed by the clamping rod 102, the three fourth springs 103 are uniformly connected between the middle portion of the inner side surface of the clamping rod 102 and the inner side surface of the clip frame 101 at intervals, the trigger rods 104 are symmetrically mounted on the front and the rear side of the upper portion of the right side surface of the u-shaped slider 4 in a welding connection mode, the trigger rod 104 is in contact with the inclined plane of the lower portion of the clamping rod 102, and the trigger rod 104 can limit the clamp rod 102.

Initially, third spring 811 is in a stretched state, when magnetic block 75 moves downward, magnetic block 75 also drives ratchet bar 82 to move downward, ratchet bar 82 moves downward to be out of contact with grooved latch 87, grooved latch 87 moves rightward to a proper position due to the action of third spring 811, ratchet bar 82 moves downward to drive ratchet 88 to rotate backward, ratchet 88 rotates backward to drive rotary lever 810 to rotate backward, rotary lever 810 rotates backward to drive rotary gear 89 to rotate backward, rotary gear 89 rotates backward to drive grooved rack 86 to move upward, grooved rack 86 moves upward to drive ejector 83 to move upward, second spring 85 is compressed, grooved rack 86 moves upward to contact grooved latch 87, grooved rack 86 drives grooved latch 87 to move leftward, third spring 811 is stretched, grooved rack 86 moves upward to allow grooves to correspond to grooved latch 87, grooved latch 87 inserts into grooved rack 86 to move rightward due to the action of third spring 811, the grooved rack 86 is fixed by the grooved block 87, at this time, the magnetic block 75 moves downward to a proper position, the magnetic block 75 stops driving the ratchet 82 to move downward, the automobile engine cover swings upward to contact with the magnetic block 75 to be sucked and fixed, when the magnetic block 75 moves upwards to reset, the magnetic block 75 moves upwards to drive the ratchet bar 82 to move upwards, the ratchet bar 82 moves upwards to slide on the ratchet wheel 88, the ratchet bar 82 moves upwards to be inserted into the groove of the groove clamping block 87, the ratchet bar 82 drives the groove clamping block 87 to move leftwards, the third spring 811 is stretched, the groove clamping block 87 moves leftwards to be separated from the groove of the groove rack 86, the material pushing rod 83 moves downwards to drive the groove rack 86 to move downwards to reset under the action of the second spring 85, the material pushing rod 83 moves downwards to reset to push the automobile engine cover to swing downwards violently to reset, the above steps are repeated, and the automobile engine hood can be pushed to swing downwards violently each time to carry out the durability test. Therefore, the swinging force of the automobile engine hood is larger, and the durability of the automobile engine hood can be tested better.

When the driving motor 61 is started, the screw 62 rotates forward and backward alternately and also drives the lower bevel gear 97 to rotate forward and backward alternately, the lower bevel gear 97 rotates forward and backward alternately and drives the upper bevel gear 97 to rotate forward and backward alternately, the upper bevel gear 97 rotates forward and backward alternately and drives the guide shaft 91 to rotate forward and backward alternately, the guide shaft 91 rotates forward and backward alternately and drives the wave trough plate 92 to rotate forward and backward alternately, the wave trough plate 92 rotates forward and backward alternately and drives the slide bar 96 to move up and down, the slide bar 96 moves up and down to drive the contact plate 93 to move up and down, when the contact plate 93 moves down, the contact plate 93 drives the T-shaped rod 94 to move down, the second spring 85 is compressed, when the contact plate 93 moves up, the contact plate 93 does not limit the T-shaped rod 94, and due to the action of the second spring 85, the T-shaped rod 94 moves up and resets, and the second spring 85 is repeated in such a way, and the compression and the second spring 85 can be continuously compressed, and the resetting force of the pushing rod 83 is adjusted, the downward swinging force of the automobile engine cover is adjusted. When the driving motor 61 is turned off, the screw 62 stops driving the lower bevel gear 97 to rotate forward and backward alternately, the lower bevel gear 97 stops driving the upper bevel gear 97 to rotate forward and backward alternately, the guide shaft 91 stops driving the wave groove disc 92 to rotate forward and backward alternately, and the contact plate 93 stops driving the T-shaped rod 94 to move up and down. Therefore, the force for swinging the automobile engine cover downwards is inconsistent, and the durability test is better.

Initially, the fourth spring 103 is in a stretched state, when the driving motor 61 is started, the u-shaped slider 4 moves upward to further drive the trigger rod 104 to move upward, the trigger rod 104 moves upward without limiting the clamping rod 102, the clamping rod 102 moves inward to contact with the movable rod 72 under the action of the fourth spring 103, the movable rod 72 further moves upward to further drive the clamping groove 105 to move upward, when the clamping groove 105 moves upward to correspond to the inner end of the upper portion of the clamping rod 102, the clamping rod 102 moves inward to be inserted into the clamping groove 105 to fix the movable rod 72 under the action of the fourth spring 103, when the u-shaped slider 4 moves downward, the u-shaped slider 4 drives the L-shaped sleeve 71 to move downward, because the movable rod 72 is fixed, the L-shaped sleeve 71 moves downward to stretch the elastic member 77, the u-shaped slider 4 moves downward to further drive the trigger rod 104 to move downward, the trigger rod 104 moves downward to return to contact with the clamping rod 102, and the trigger rod 104 drives the clamping rod 102 to move outward to return, the fourth spring 103 is stretched, the trigger rod 104 moves outward to be separated from the contact with the locking groove 105, and due to the action of the elastic element 77, the movable rod 72 moves downward to reset and drives the pull wire 74 to move downward to reset, and the pull wire 74 resets and drives the magnetic block 75 to move upward to reset. Therefore, when the push plate 5 is not moved downwards and reset, the situation that the automobile engine hood swings downwards and is blocked by the push plate 5 to influence the durability test can be avoided.

Example 3

On the basis of the embodiment 1 and the embodiment 2, the automobile engine hood further comprises a rubber plate 11 and a fifth spring 12, please refer to fig. 1 and fig. 12, the rubber plate 11 is connected in a sliding manner in the middle of the top of the push plate 5 in an embedded manner, when the automobile engine hood swings downwards and returns, the rubber plate 11 can buffer the automobile engine hood, and nine fifth springs 12 are uniformly connected between the bottom of the rubber plate 11 and the inner side of the push plate 5 at intervals.

The automobile engine hood further comprises a fixed seat 13, a guide rod 14 and a contact roller 15, as shown in fig. 4, the fixed seat 13 is symmetrically arranged in front and back of the left side face of the push plate 5 in a welding connection mode, the guide rod 14 is rotatably connected between the fixed seats 13 on the front side and the rear side in a penetrating mode, the contact roller 15 is fixedly sleeved in the middle of the guide rod 14, and when the push plate 5 drives the automobile engine hood to swing upwards, the contact roller 15 can guide the automobile engine hood.

When the automobile engine hood swings downwards and returns, the automobile engine hood is contacted with the rubber plate 11, and the rubber plate 11 buffers the automobile engine hood under the action of the fifth spring 12. Thus, the deformation of the automobile engine hood due to the violent contact with the push plate 5 can be avoided.

When the push plate 5 moves upwards, the push plate 5 also drives the fixing seat 13 to move upwards, the fixing seat 13 moves upwards to drive the guide rod 14 to move upwards, the guide rod 14 moves upwards to drive the contact roller 15 to move upwards, the contact roller 15 moves upwards to drive the automobile engine cover to swing upwards, when the push plate 5 moves downwards to reset, the push plate 5 drives the guide rod 14 to move downwards through the fixing seat 13 to reset, the guide rod 14 resets to drive the contact roller 15 to move downwards to reset, and the contact roller 15 resets to be separated from the contact with the automobile engine cover. Therefore, the push plate 5 can drive the automobile engine hood to swing upwards better.

Finally, it is necessary to state that: the above-mentioned contents are only used to help understanding the technical solution of the present invention, and should not be interpreted as limiting the scope of the present invention; insubstantial modifications and adaptations of the invention as described above will occur to those skilled in the art and are intended to be within the scope of the invention as claimed.

Claims

1. A durability test device for an automobile engine cover comprises a base (1), an L-shaped limit plate (2), an L-shaped frame (3), a u-shaped sliding block (4) and a push plate (5), wherein the L-shaped limit plate (2) for limiting the automobile is fixedly connected to the upper portion of the left side face of the base (1), the L-shaped frame (3) is fixedly connected to the middle of the outer top of the base (1), the u-shaped sliding block (4) is slidably connected to the lower portion of the inner right side face of the L-shaped frame (3) in a penetrating manner, the push plate (5) for driving the automobile engine cover to swing upwards is fixedly connected to the outer left side face of the u-shaped sliding block (4), the durability test device is characterized by further comprising a driving mechanism (6) and a limiting mechanism (7), the driving mechanism (6) for driving the u-shaped sliding block (4) to move is installed between the inner right portion of the L-shaped frame (3) and the base (1), and the driving mechanism (6) is fixedly connected with the inner side of the u-shaped sliding block (4), and a limiting mechanism (7) for sucking and fixing the automobile engine cover is arranged on the inner side of the L-shaped frame (3), and the limiting mechanism (7) is in contact with the u-shaped sliding block (4).

2. The automobile engine hood durability testing device according to claim 1, characterized in that the driving mechanism (6) comprises a driving motor (61), a screw rod (62) and a nut (63), the screw rod (62) is rotatably connected to the middle of the right side of the inner top of the L-shaped frame (3), the nut (63) for driving the u-shaped sliding block (4) to move is sleeved on the screw rod (62) in a threaded rotating manner, the front end and the rear end of the nut (63) are fixedly connected with the front side face and the rear side face of the inner side of the u-shaped sliding block (4) respectively, the driving motor (61) is installed in the middle of the outer top of the base (1), and the end part of an output shaft of the driving motor (61) is fixedly connected with the bottom end of the screw rod (62).

3. The automobile engine hood durability testing device according to claim 2, characterized in that the limiting mechanism (7) comprises an L-shaped sleeve (71), a movable rod (72), a wire guiding roller (73), a pulling wire (74), a magnetic block (75), a first spring (76) and an elastic part (77), the wire guiding roller (73) is rotatably connected between the upper parts of the front side surface and the rear side surface of the L-shaped frame (3) at uniform intervals, four first springs (76) are uniformly connected at the left side of the inner top of the L-shaped frame (3) at intervals, the magnetic block (75) for sucking and fixing the automobile engine hood is fixedly connected between the tail ends of the four first springs (76), the L-shaped sleeve (71) is arranged between the upper parts of the left side surface and the right side surface of the inner right part of the L-shaped frame (3) through a fixed block, the left end of the L-shaped sleeve (71) is in contact with the u-shaped sliding block (4) for limiting, the movable rod (72) is slidably arranged in the L-shaped sleeve (71), an elastic part (77) is connected between the bottom end of the movable rod (72) and the inner bottom of the L-shaped sleeve (71), a stay wire (74) used for driving the magnetic block (75) to move upwards for resetting is connected to the top end of the movable rod (72), and the tail end of the stay wire (74) bypasses the three wire guide rollers (73) and is fixedly connected with the middle of the top of the magnetic block (75).

4. The automobile engine hood durability testing device according to claim 3, characterized by further comprising a pushing mechanism (8) for pushing the automobile engine hood to swing downwards, wherein the pushing mechanism (8) comprises a frame body (81), a ratchet bar (82), a pushing rod (83), a guide cylinder (84), a second spring (85), a grooved rack (86), a grooved block (87), a ratchet wheel (88), a rotating gear (89), a rotating rod (810) and a third spring (811), the frame body (81) is fixedly connected between the two sides of the middle of the left side of the upper part of the L-shaped frame (3), the guide cylinder (84) is fixedly connected to the middle of the inner top of the frame body (81), the pushing rod (83) for driving the automobile engine hood to swing downwards is arranged in the guide cylinder (84) in an inward sliding manner, the top end of the pushing rod (83) is connected with the second spring (85), the tail end of the second spring (85) is contacted with the inner top of the guide cylinder (84), push away material pole (83) left surface upper portion rigid coupling and have trough of belt rack (86), trough of belt rack (86) run through guide cylinder (84) left side, the outer left surface upper portion rotary type of framework (81) is connected with bull stick (810), the fixed cover in bull stick (810) middle part is equipped with and is used for driving rotatory gear (89) of trough of belt rack (86) upward movement, rotatory gear (89) and trough of belt rack (86) meshing, both sides all rigid coupling has ratchet (88) around bull stick (810), the middle rigid coupling in magnetic block (75) top right side has and is used for driving ratchet (88) reversal ratchet (82), L type frame (3) and ratchet (88) meshing are run through to ratchet (82) top, the wearing of framework (81) left side upper portion middle slidingtype has and is used for fixing trough of belt rack (86), the groove of trough of belt fixture block (87) and ratchet (82) top contact, the symmetry is connected with the third around between trough of belt fixture block (87) top left side left surface left side and the outer left surface upper portion of framework (81) And a spring (811).

5. The automobile engine hood durability testing device according to claim 4, characterized by further comprising a compression mechanism (9) for adjusting the moving force of the pushing rod (83), wherein the compression mechanism (9) comprises a guide shaft (91), a wave groove disc (92), a contact plate (93), a T-shaped rod (94), a return block (95), a sliding rod (96) and a bevel gear (97), the T-shaped rod (94) for compressing the second spring (85) is slidably connected between the middle of the top of the guide cylinder (84) and the top of the frame body (81), the outer bottom of the T-shaped rod (94) is in contact with the tail end of the second spring (85), the return block (95) is fixedly connected in the middle of the right side of the outer top of the frame body (81), the sliding rod (96) is slidably connected in the return block (95), the contact plate (93) for driving the T-shaped rod (94) to move downwards is fixedly connected at the left end of the sliding rod (96), contact plate (93) and T type pole (94) top contact, the cross-under of horizontal rotary type in the middle of L type frame (3) upper portion has guiding axle (91), guiding axle (91) left end rigid coupling has wave groove dish (92) that are used for driving slide bar (96) and reciprocate, slide bar (96) right-hand member is located the inslot of wave groove dish (92), lead screw (62) upper portion and guiding axle (91) right-hand member all fixed cover are equipped with bevel gear (97), two bevel gear (97) mesh mutually.

6. The automobile engine hood durability testing device according to claim 5, characterized by further comprising a clamping mechanism (10) for fixing the movable rod (72), wherein the clamping mechanism (10) comprises a back-shaped frame (101), a clamping rod (102), a fourth spring (103) and a trigger rod (104), the upper parts of the outer side surfaces of the movable rods (72) at the front side and the rear side are provided with clamping grooves (105), the middle parts of the front side surface and the rear side surface in the L-shaped frame (3) are fixedly connected with the back-shaped frame (101), the clamping rod (102) for fixing the movable rod (72) is slidably sleeved between the upper side and the lower side of the back-shaped frame (101), the middle parts of the inner side surfaces of the clamping rods (102) and the inner side surface of the back-shaped frame (101) are uniformly connected with the three fourth springs (103) at intervals, the front and rear parts of the upper parts of the right side surfaces of the u-shaped sliders (4) are symmetrically and fixedly connected with the trigger rods (104) for limiting the clamping rod (102), the trigger lever (104) is in contact with the lower inclined surface of the clamping lever (102).

7. The automobile hood durability test device according to claim 6, further comprising a rubber plate (11) and a fifth spring (12), wherein the rubber plate (11) for buffering the automobile hood is connected in an embedded manner in the middle of the top of the push plate (5), and nine fifth springs (12) are uniformly connected between the bottom of the rubber plate (11) and the inner side of the push plate (5) at intervals.

8. The device for testing the durability of the automobile engine hood according to claim 7, characterized by further comprising a fixed seat (13), a guide rod (14) and a contact roller (15), wherein the fixed seats (13) are symmetrically and fixedly connected to the front and the rear of the left side surface of the push plate (5), the guide rod (14) is rotatably connected between the fixed seats (13) at the front side and the rear side in a penetrating manner, and the contact roller (15) for guiding the automobile engine hood is fixedly sleeved in the middle of the guide rod (14).