CN203824825U - Device for loading sinking resistance performance of coverage piece outside automobile body and equipment for testing sinking resistance performance of coverage piece outside automobile body - Google Patents

Abstract

In order to overcome the problem that the loading method of the prior art can only complete the performance test of anti-dent stiffness, and the test is inaccurate, the utility model provides a loading device for the anti-dent performance of the outer cover of the vehicle body, including a beam, a loading assembly and two support assemblies ; The two support assemblies include support brackets, and the two support brackets are connected to the beam to support the beam; the loading assembly includes a length-adjustable loading bracket, and in the length direction of the loading bracket, the loading bracket The head end is connected to the beam between the two supporting brackets, and the tail end of the loading bracket is used to load the test piece. At the same time, the utility model also provides a device for testing the anti-dent performance of the outer cover of the vehicle body. The loading device provided by the utility model can apply sufficient intensity of loading, which is beneficial to complete the test of anti-concave stiffness and strength performance, and meanwhile, the device is loaded stably, which is beneficial to improving the accuracy of the test.

Description

Loading device and testing equipment for anti-dent performance of body outer cover

technical field

The utility model relates to a loading device for the anti-dent performance of an outer cover of a vehicle body and testing equipment using the loading device.

Background technique

With the development of the automobile industry, automobile manufacturers not only pay attention to the safety and comfort of automobiles, but also in order to save energy consumption, meet strict emission standards, and protect the environment, they have to use thinner steel plates as the outer covering parts of automobiles. This leads to a series of problems caused by the "softening" of the outer cover, such as the self-weight of the outer cover or the depression caused by a slight collision, the vibration and noise generated during the driving of the car, and so on.

In response to these situations, automobile manufacturers have raised the issue of the dent resistance of the outer covering, and customers also require the dent resistance of the body as a main indicator when purchasing a car. The so-called dent resistance of the automobile outer cover refers to the ability of the deformed test piece (or punched part) to bear the external load, resist the dent deflection or local dent deformation, and maintain the shape, specifically including the anti-dent stiffness performance and anti-corrosion Concave strength properties.

In order to measure the anti-dent performance of automobile outer panels, the industry mainly adopts two methods: physical measurement and software simulation. Although the software simulation can roughly grasp the theoretical distribution of the anti-dent performance of the new car model's outer panel, because the computer simulation cannot take all the influencing factors into account, it is still meaningful to measure through the real object.

At present, there is no ready-made special measuring equipment on the market, and the commonly used method is to use manual direct pressing for loading. However, for the test of the dent resistance performance of the outer body panel, the load of the anti-dent stiffness performance is usually about 100N, and the load of the anti-dent strength performance is usually about 400N, and the direction of the load should be the normal direction of the loading point . The load of 400N cannot be reached when the load is directly pressed by hand, and the anti-dent strength performance test cannot be completed; and when the load is loaded by direct press by hand, the load is unstable and the accuracy of the test cannot be guaranteed.

Utility model content

The technical problem to be solved by the utility model is to provide a loading device for the anti-dent performance of the outer cover of the vehicle body, aiming at the problem that the loading method of the prior art can only complete the anti-dent stiffness performance test, and the test is inaccurate.

The technical solution adopted by the utility model to solve the problems of the technologies described above is as follows:

Provided is a loading device for the anti-dent performance of the outer cover of the vehicle body, including a crossbeam, a loading assembly and two support assemblies; the two support assemblies each include a support bracket, and the two support brackets are connected to the crossbeam to support the crossbeam; The loading assembly includes a loading bracket with adjustable length. In the length direction of the loading bracket, the head end of the loading bracket is connected to the beam between the two supporting brackets, and the tail end of the loading bracket is used for loading the test piece.

When the anti-dent performance loading device for the outer cover of the vehicle body provided by the utility model is in use, only two supporting components need to be fixed on the workbench to fix the position of the beam. Then adjust the length of the loading bracket to load the test piece through the loading bracket. The above structure can provide enough load to complete the anti-dent stiffness and strength performance test. Moreover, under the condition that the length of the loading bracket is constant, the load applied by the loading device to the test piece is stable, which can ensure the accuracy of the test.

Further, the loading assembly also includes a loading connector; the loading connector includes a loading fastening sleeve and a loading fastening bolt; the loading fastening sleeve is rotatably sleeved on the beam, and the loading tightening The fastening bolts are arranged on the loading fastening sleeve; the loading fastening bolts on the loading fastening sleeve fix the loading fastening sleeve on the beam; the head end of the loading bracket is connected to the loading fastening sleeve.

At this time, when the loading fastening bolt is in the loosened state, the loading bracket can rotate around the beam along with the loading fastening sleeve. During the specific test, according to the specific structure of the loading point on the surface of the test piece, the spatial position of the loading bracket can be adjusted in the plane perpendicular to the beam, so that the loading bracket can coincide with the normal direction of the loading point as much as possible to improve the accuracy of the test.

Further, the loading connector also includes a loading connecting sleeve and a loading connecting bolt; the loading connecting sleeve is fixed on the loading fastening sleeve; the loading connecting bolt is fixed to the head of the loading bracket perpendicular to the extension direction of the beam end; the loading connecting sleeve is rotatably sleeved on the loading connecting bolt.

Under the above structure, the loading bracket can rotate around the loading connecting bolt in a plane parallel to the beam. Combined with the aforementioned structure, in the loading device, the spatial position of the loading bracket can be adjusted in four directions, which is more conducive to ensuring that the normal direction of the loading bracket coincides with the loading point, and is conducive to further improving the accuracy of the test.

Further, the loading connector also includes a fixed gear, a limit gear and a limit nut; the loading connecting bolt has a boss; the fixed gear is fixed on the loading fastening sleeve; the limit nut and The loading connection bolt is threaded; the limit gear is sleeved on the load connection bolt between the limit nut and the boss, and is clamped and fixed by the limit nut and the boss; the limit gear meshes with the fixed gear at the same time .

Before the test, after the adjustable loading bracket is moved to the target space position, the loading bracket can be effectively fixed through the above-mentioned structure, which facilitates subsequent operations and improves the accuracy of the test.

Further, the loading bracket includes a first loading link, a second loading link, a third loading link, a fourth loading link, a first loading connecting plate, a second loading connecting plate, a third loading connecting plate, The fourth loading connecting plate and the loading screw rod; the first loading connecting rod, the first loading connecting plate, the second loading connecting rod, the second loading connecting plate, the third loading connecting rod, the third loading connecting plate, the fourth loading connecting rod The loading connecting rod and the fourth loading connecting plate are riveted head to tail in turn to form a closed ring; the fourth loading connecting plate is fixedly connected to the loading connecting bolt, and the second loading connecting plate is used to load the test piece; It is arranged on the first loading connecting plate and the third loading connecting plate, and is threadedly connected with the first loading connecting plate and the third loading connecting plate at the same time; The connection direction of the connecting plate is opposite to that of the loading screw rod.

Under the above-mentioned structure, continuous fine-tuning of the length of the loading bracket can be realized, which is beneficial to improving the test accuracy. Moreover, the above structure is simple and easy to operate.

Further, the loading assembly further includes a mounting cylinder, and the mounting cylinder is fixed on the second loading connecting plate.

In the above structure, by setting the mounting cylinder, it is beneficial to install the force sensor required for testing the anti-dent performance.

Further, the installation cylinder has a lead groove.

The lead groove on the installation barrel can pass through the wires of the force sensor, which facilitates the installation of the force sensor in the installation barrel.

Further, the support assembly also includes a support connector; the support connector includes a support fastening sleeve, a support fastening bolt, a support connection sleeve and a support connection bolt; the rotatable sleeve of the support fastening sleeve Set on the beam; the support fastening bolt is arranged on the support fastening sleeve; the support fastening bolt on the support fastening sleeve fixes the support fastening sleeve on the beam; the support connection sleeve is fixed on the supporting fastening sleeve; the supporting connecting bolt is fixed on the supporting bracket perpendicular to the extending direction of the beam; the supporting connecting sleeve is rotatably sleeved on the supporting connecting bolt.

At this time, according to the size of the test piece, the distance between the two support components can be adjusted to improve the applicability of the loading device to the test pieces of different sizes and structures.

Further, the support bracket includes a first support link, a second support link, a third support link, a fourth support link, a first support connection plate, a second support connection plate, a third support connection plate, The fourth support connecting plate and supporting screw rod; the first supporting connecting rod, the first supporting connecting plate, the second supporting connecting rod, the second supporting connecting plate, the third supporting connecting rod, the third supporting connecting plate, the fourth supporting connecting rod The supporting connecting rod and the fourth supporting connecting plate are riveted head-to-tail in turn to form a closed ring; the fourth supporting connecting plate is fixedly connected with the supporting connecting bolt; the supporting screw is passed through the first supporting connecting plate and the third supporting connecting plate , and simultaneously threaded with the first support connecting plate and the third support connecting plate; the first supporting connecting plate is threaded with the support screw and the third support connecting plate is opposite to the threaded direction of the support screw.

At this time, the height of the beam can be further adjusted according to the size of the test piece, so as to further improve the applicability of the loading device to test pieces of different sizes and structures.

Simultaneously, the utility model provides a kind of equipment for testing the anti-dent performance of the outer cover of the vehicle body, including the loading device with the above structure, a force sensor and a displacement sensor; the force sensor is fixed on the tail end of the loading bracket; the displacement sensor is relatively When the crossbeam is set at rest, the probe of the displacement sensor moves synchronously with the force sensor.

The above-mentioned anti-dent performance testing equipment of the outer cover of the vehicle body provided by the utility model can effectively test the anti-dent performance of the outer cover of the vehicle body, and the test process is stable and the test result is accurate.

Description of drawings

Fig. 1 is a perspective view of the anti-dent performance loading device of the outer cover of the vehicle body in the preferred embodiment provided by the utility model;

Fig. 2 is a perspective view of the loading assembly in the anti-dent performance loading device of the outer cover of the vehicle body in the preferred embodiment provided by the present invention;

Fig. 3 is a partial enlarged view of A in Fig. 2;

Fig. 4 is a side view of the loading assembly along the axial direction of the beam in the preferred embodiment provided by the present invention;

Fig. 5 is a partial enlarged view of place B in Fig. 4;

Fig. 6 is a perspective view of the support assembly in the anti-dent performance loading device of the outer cover of the vehicle body in the preferred embodiment provided by the present invention;

Fig. 7 is a schematic diagram of the use state of the test equipment for the anti-dent performance of the outer cover of the vehicle body in the preferred embodiment provided by the present invention;

Fig. 8 is a schematic diagram of the internal structure of the installation cylinder in Fig. 7 .

The reference signs in the accompanying drawings of the description are as follows:

1. Beam;

2. Support assembly; 211. Support fastening sleeve; 212. Support fastening bolt; 221. Support connecting bolt; 231. First support link; 232. Second support link; 233. Third support link; 234, the fourth support link; 235, the first support connection plate; 236, the second support connection plate; 237, the third support connection plate; 238, the fourth support connection plate; 239, the support screw rod;

3. Loading component; 311. Loading fastening sleeve; 312. Loading fastening bolt; 313. Fixed gear; 314. Loading connecting sleeve; 321. Loading connecting bolt; 3211. Boss; 322. Limiting gear; 323 , limit nut; 331, the first loading connecting rod; 332, the second loading connecting rod; 333, the third loading connecting rod; 334, the fourth loading connecting rod; 335, the first loading connecting plate; 336, the second loading Connecting plate; 337, the third loading connecting plate; 338, the fourth loading connecting plate; 339, loading screw mandrel; 34, installation cylinder; 341, lead groove;

4. Force sensor; 41. Force sensor wire;

5. Displacement sensor; 51. Probe; 52. Displacement sensor wire;

6. Pressure head;

7. The piece to be tested.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects solved by the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

In the description of the present utility model, the terms "length direction", "head end" and "tail end" are defined as follows:

"Length direction" is defined as the direction in which the loading bracket stretches. "Head end" and "Tail end" are only used to define the two ends of the loading bracket in the "length direction".

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or an optional connection. Disassembled connection, or integral connection; it can be directly connected or indirectly connected through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

The anti-dent performance loading device for the outer cover of the vehicle body provided by the utility model includes a crossbeam, a loading assembly and two support assemblies; the two support assemblies both include support brackets, and the two support brackets are connected to the crossbeam to support the crossbeam The loading assembly includes a loading bracket with adjustable length. In the length direction of the loading bracket, the head end of the loading bracket is connected to the beam between the two supporting brackets, and the tail end of the loading bracket is used to load the test piece.

In the above structure, the beam and the two supporting components constitute the basic frame of the loading device.

Specifically, the above two supporting components are arranged on the beam to support the beam. The loading device provided by the utility model has two support assemblies, and the two support assemblies have the same structure, and both at least include support brackets. As for the structure of the supporting assembly itself, in the present invention, there is no special restriction on its structure, as long as the beam can be firmly fixed on the workbench.

Usually, due to the various sizes and shapes of the test piece, in order to improve the applicability of the loading device, preferably, the support assembly also includes a support connector; the support connector includes a support fastening sleeve, a support tight Fastening bolts, supporting connecting sleeves and supporting connecting bolts; the supporting fastening sleeve is rotatably set on the beam; the supporting fastening bolts are arranged on the supporting fastening sleeve; located on the supporting fastening sleeve The support fastening bolts fix the support fastening sleeve on the crossbeam; the support connection sleeve is fixed on the support fastening sleeve; the support connection bolts are fixed on the support bracket perpendicular to the extension direction of the crossbeam; the support The connecting sleeve is rotatably sleeved on the supporting connecting bolt.

When in use, just move the support assembly along the beam according to the width of the test piece, adjust the distance between the two support assemblies to an appropriate level, and then lock the two support fastening sleeves on the two support fastening sleeves respectively. Bolts are used to fix the positions of the two supporting fastening sleeves on the beam. Then fix the two brackets in the two support assemblies on the workbench.

In the above structure, there are many structures for fixing the support fastening sleeve to the beam by locking the support fastening bolts. The support fastening bolt is passed through the through hole, and by locking the support fastening bolt, the end of the support fastening bolt is pressed on the beam in the support fastening sleeve, and the end of the support fastening bolt is connected to the The frictional force between the beams realizes the fixing of the supporting fastening sleeve. Alternatively, the above-mentioned supporting and fastening sleeve adopts a non-closed sleeve structure, and its side wall has an opening, and the side wall extends parallelly outward along both ends in the circumferential direction of the sleeve to form two flanges. The two flanges are provided with through holes, and the supporting fastening bolts are passed through the two through holes. The distance between the two flanges is adjusted by adjusting the tightness of the supporting fastening bolts to change the clamping force of the supporting fastening sleeve on the crossbeam, thereby changing the tightness of the supporting fastening sleeve on the crossbeam.

In the present invention, there is no limitation on the specific structure of the support bracket. Preferably, the support bracket includes a first support link, a second support link, a third support link, a fourth support link, a first support connection plate, a second support connection plate, and a third support connection plate , the fourth support connecting plate and the supporting screw mandrel; the first supporting connecting rod, the first supporting connecting plate, the second supporting connecting rod, the second supporting connecting rod, the third supporting connecting rod, the third supporting connecting plate, the first supporting connecting rod The four supporting connecting rods and the fourth supporting connecting plate are riveted head to tail to form a closed ring; the fourth supporting connecting plate is fixedly connected to the supporting connecting bolt; the supporting screw rod is passed through the first supporting connecting plate and the third supporting connecting plate and threaded with the first support connecting plate and the third support connecting plate at the same time; the screw connection direction of the first support connecting plate and the support screw rod is opposite to the thread connection direction of the third support connecting plate and the support screw rod.

At this time, when the supporting screw is rotated, the first supporting connecting plate and the third supporting connecting plate connected to the supporting screw move relative to each other along the supporting screw. Thereby, the first support link, the second support link, the third support link, and the fourth support link drive the second support link plate and the fourth support link plate to produce relative motion, so that the support bracket drives the beam to move. When in use, the height of the beam can be adjusted through the support bracket according to the size of the test piece.

According to the present invention, in the above loading device, the loading assembly is used to apply load from the beam to the test piece. Specifically, the loading component includes a loading bracket. The length of the loading bracket is adjustable, so as to realize the adjustment of the load to be applied to the test piece.

The loading bracket in the utility model can adopt various adjustable length bracket structures. For example, the loading bracket structure can be the same as the supporting bracket. Specifically, the loading bracket includes a first loading link, a second loading link, a third loading link, a fourth loading link, a first loading connecting plate, a second loading connecting plate, a third loading connecting plate, The fourth loading connecting plate and the loading screw rod; the first loading connecting rod, the first loading connecting plate, the second loading connecting rod, the second loading connecting plate, the third loading connecting rod, the third loading connecting plate, the fourth loading connecting rod The loading connecting rod and the fourth loading connecting plate are riveted head to tail in sequence to form a closed ring; the fourth loading connecting plate is connected to the beam, and the second loading connecting plate is used to load the test piece; the loading screw is passed through the first One loading connecting plate and the third loading connecting plate, and threaded connection with the first loading connecting plate and the third loading connecting plate at the same time; The direction of threading of the loading screw is reversed.

According to the utility model, the above-mentioned loading device can continuously increase the load applied to the test piece, and the load is stable, which is beneficial to ensure the accuracy of the test.

Ideally, when testing the dent resistance of the test piece, the direction of load application should coincide with the normal direction of the loading point. However, when pressing directly with conventional hands, it is difficult to ensure that the direction of loading coincides with the normal direction of the loading point, resulting in inaccurate test results.

In the utility model, in order to improve the accuracy of the test, preferably, the loading assembly further includes a loading connector; the loading connector includes a loading fastening sleeve and a loading fastening bolt; the loading fastening sleeve It is rotatably sleeved on the crossbeam, and the loading fastening bolt is arranged on the loading fastening sleeve; the loading fastening bolt on the loading fastening sleeve fixes the loading fastening sleeve on the crossbeam; the loading The head end of the bracket is connected to the loading fastening sleeve.

According to the utility model, the above-mentioned loading fastening sleeve is sleeved on the beam, and can translate or rotate along the beam. The movement or fixation of the loading fastening sleeve on the crossbeam is realized by the tightening and tightening of the loading fastening bolts. The specific fixing method of the loading fastening sleeve and the loading fastening bolt on the cross beam may be the same as that of the supporting fastening sleeve and the supporting fastening bolt on the cross beam, and will not be repeated here.

Since the head end of the loading bracket is connected to the loading fastening sleeve, the horizontal position of the loading bracket can be adjusted by moving the loading fastening sleeve along the beam when the loading fastening bolt is in a loosened state. Then turn the loading fastening sleeve to adjust the position of the loading bracket in the plane perpendicular to the axial direction of the beam. Finally, the loading fastening bolts are locked to fix the loading bracket on the beam. In specific use, according to the specific shape of the loading point, the loading bracket is adjusted according to the above method, so that the loading direction of the loading bracket can coincide with the normal direction of the loading point as much as possible, which is beneficial to improve the test accuracy.

In the utility model, in order to further ensure that the loading direction of the loading bracket coincides with the normal direction of the loading point, preferably, the loading connector further includes a loading connecting sleeve and a loading connecting bolt; the loading connecting sleeve is fixed on the loading Fasten the sleeve; the loading connecting bolt is fixed to the head end of the loading bracket perpendicular to the extension direction of the beam; the loading connecting sleeve is rotatably sleeved on the loading connecting bolt.

According to the utility model, at this time, the loading bracket can rotate around the loading connecting bolt in a plane parallel to the beam, so as to realize the adjustment of the spatial position of the loading bracket in four directions in space, which is more conducive to ensuring that the normal direction of the loading bracket and the loading point coincides. It is beneficial to further improve the accuracy of the test.

Under this structure, the fourth loading connection plate of the aforementioned loading bracket can be fixedly connected to the loading connection bolt.

In the utility model, on the basis of the previously adjusted space position of the loading bracket, in order to avoid changing the position of the loading bracket when the load is applied to the test piece, preferably, the loading connector also includes a fixed gear and a limit gear and a limit nut; the loading connecting bolt has a boss; the fixed gear is fixed on the loading fastening sleeve; the limiting nut is threaded with the loading connecting bolt; the limiting gear is sleeved on the limiting The loading connection bolt between the nut and the boss is clamped and fixed by the limit nut and the boss; the limit gear meshes with the fixed gear at the same time.

After adjusting the spatial position of the loading bracket, tighten the limit nut on the loading connecting bolt, and fix the limit gear and the loading connecting bolt as a whole through the clamping action of the limit nut and the boss. At the same time, the limit gear and the fixed The gears mesh, and the fixed gear is fixed on the loading fastening sleeve and cannot rotate, that is, at this time, the loading connecting bolt cannot rotate. However, the loading bracket is fixedly connected with the loading connecting bolt, and the loading bracket cannot rotate around the loading connecting bolt. In this way, the spatial position of the loading bracket can be fixed.

According to the present invention, the second loading connecting plate of the loading bracket is used to apply load to the test piece. In specific use, the force sensor is arranged between the second loading connection plate and the piece to be tested. In the present invention, in order to facilitate the installation of the force sensor, preferably, the loading assembly further includes a mounting cylinder, and the mounting cylinder is fixed on the second loading connecting plate. Since the force sensor is connected to the force sensor wire that transmits the acquired data, in order to facilitate the passage of the force sensor wire, preferably, the installation cylinder has a lead groove.

Simultaneously, the utility model provides a kind of equipment for testing the anti-dent performance of the outer cover of the vehicle body, including the loading device with the above structure, a force sensor and a displacement sensor; the force sensor is fixed on the tail end of the loading bracket; the displacement sensor is relatively When the crossbeam is set at rest, the probe of the displacement sensor moves synchronously with the force sensor.

Specifically, when the loading device has all the aforementioned structures, the force sensor can be fixedly installed in the cylinder, and the force sensor wires pass through the lead groove. At this time, the force sensor can move along with the second loading connecting plate of the loading bracket to apply a load to the test piece and record relevant data at the same time.

In the installation cylinder, an indenter is also arranged between the force sensor and the piece to be tested.

As for the displacement sensor, there is no restriction on its specific setting position, as long as it is stationary relative to the beam. The probe of the displacement sensor extends to the mounting cylinder and can move synchronously with the force sensor. Specifically, it is sufficient to fix the displacement sensor by using a separate support component and make the probe contact with the installation cylinder. The displacement sensor lead of the displacement sensor is connected to the computer, and the displacement value is transmitted to the computer in real time, so as to draw the displacement load curve.

In the preferred embodiment provided by the present utility model, the structure of the loading device for the anti-dent performance of the outer cover of the vehicle body and the testing equipment will be described below with reference to FIGS. 1-8 .

Referring to FIG. 1 , the anti-dent performance loading device of the outer body covering includes a straight beam 1 . Both ends of the beam 1 are provided with supporting components 2 . A loading assembly 3 is arranged on the beam 1 between the two supporting assemblies 2 .

Referring to FIGS. 2-5 , specifically, the loading assembly 3 includes a loading connector and a loading bracket.

Wherein, the loading connector includes a loading fastening sleeve 311 , a loading fastening bolt 312 , a loading connecting sleeve 314 , a loading connecting bolt 321 , a fixed gear 313 , a limiting gear 322 and a limiting nut 323 .

The above-mentioned loading fastening sleeve 311 adopts a non-closed sleeve structure, and has an opening on its side wall, and the side wall extends parallelly outward along both ends in the circumferential direction of the sleeve, forming two flanges. Both flanges are provided with through holes. The loading fastening sleeve 311 is sheathed on the beam 1, and the loading fastening bolt 312 is passed through two through holes.

The fixed gear 313 is fixed on the side wall of the loading fastening sleeve 311 .

Specifically referring to FIG. 5 , the loading connection sleeve 314 is fixed below the side wall of the loading fastening sleeve 311 . The loading connection bolts 321 pass through the loading connection sleeve 314 perpendicular to the direction in which the beam 1 extends.

The loading connecting bolt 321 has a boss 3211 extending outward from the side wall of the loading connecting bolt 321 . The limit gear 322 is sheathed on the loading connecting bolt 321 and abuts against the boss 3211 , and meanwhile the limit gear 322 meshes with the fixed gear 313 . The limit nut 323 is sleeved on the loading connecting bolt 321 and threadedly connected with the loading connecting bolt 321 . The limiting gear 322 is located between the boss 3211 and the limiting nut 323 , and is clamped and fixed by the boss 3211 and the limiting nut 323 .

Referring to Fig. 2, Fig. 3 and Fig. 4 specifically, the loading bracket includes a first loading link 331, a second loading link 332, a third loading link 333, a fourth loading link 334, a first loading connecting plate 335, a Two loading connecting plates 336, the third loading connecting plate 337, the fourth loading connecting plate 338 and the loading screw rod 339; the first loading connecting rod 331, the first loading connecting plate 335, the second loading connecting rod 332, the second loading connecting rod The loading connecting plate 336 , the third loading connecting rod 333 , the third loading connecting plate 337 , the fourth loading connecting rod 334 , and the fourth loading connecting plate 338 are movably riveted head to tail in sequence to form a closed ring.

The fourth loading connecting plate 338 is fixedly connected with the loading connecting bolt 321, and the second loading connecting plate 336 is used to load the test piece 7; the loading screw 339 is passed through the first loading connecting plate 335 and the third loading connecting plate. on the plate 337, and threaded with the first loading connecting plate 335 and the third loading connecting plate 337 at the same time; 339 threads connect in the opposite direction.

Specifically referring to FIG. 2 and FIG. 4 , the mounting cylinder 34 is fixed below the second loading connecting plate 336 . The top of the installation cylinder 34 is closed and the bottom is open. Meanwhile, the side wall of the installation cylinder 34 has a lead groove 341 extending from the top to the bottom of the installation cylinder 34 .

Referring to FIG. 6 , specifically, the support assembly 2 includes support connectors and support brackets.

Wherein, the support connecting member includes a support fastening sleeve 211 , a support fastening bolt 212 , a support connection sleeve (not shown in the figure), and a support connection bolt 221 .

The structure of the supporting fastening sleeve 211 is the same as that of the loading fastening sleeve 311. It adopts a non-closed sleeve structure, and has openings on its side walls. side. Both flanges are provided with through holes. The supporting fastening sleeve 211 is sheathed on the beam 1 , and the supporting fastening bolts 212 are passed through two through holes.

The supporting connection sleeve is fixed below the side wall of the supporting fastening sleeve 211 . The supporting connecting bolts 221 are vertically penetrated in the supporting connecting sleeve perpendicular to the extending direction of the beam 1 .

The support bracket includes a first support link 231, a second support link 232, a third support link 233, a fourth support link 234, a first support link 235, a second support link 236, a third support link 237, the fourth support connecting plate 238 and the supporting screw mandrel 239; the first supporting connecting rod 231, the first supporting connecting plate 235, the second supporting connecting rod 232, the second supporting connecting plate 236, the third supporting connecting rod 233 , the third support connecting plate 237, the fourth supporting connecting rod 234, and the fourth supporting connecting plate 238 are riveted head to tail to form a closed ring in turn; the fourth supporting connecting plate 238 is fixedly connected with the supporting connecting bolt 221; the supporting screw rod 239 Pass through the first support connection plate 235 and the third support connection plate 237, and be threaded with the first support connection plate 235 and the third support connection plate 237 at the same time; the first support connection plate 235 and the support screw rod 239 The thread connection direction is opposite to the thread connection direction of the third support connecting plate 237 and the support screw rod 239 .

In the preferred embodiment provided by the present invention, the structure of the test equipment for the anti-dent performance of the vehicle body outer cover will be described below with reference to Fig. 7 and Fig. 8 .

Specifically, the test equipment includes a loading device having the structures shown in FIGS. 1-6 , a force sensor 4 and a displacement sensor 5 .

Referring to FIG. 8 , the force sensor 4 is fixed on the inside of the top of the installation cylinder 34 , and the force sensor wire 41 of the force sensor 4 passes through the installation cylinder 34 through the lead groove 341 and is connected to the computer. The indenter 6 is disposed in the installation barrel 34 and is located below the force sensor 4 .

The displacement sensor 5 is arranged above the object to be tested 7, and the displacement sensor wire 52 of the displacement sensor 5 is connected to the computer.

The testing process of the test equipment for the anti-dent performance of the outer cover of the vehicle body provided by the utility model will be described below with reference to FIG. 7 and FIG. 8 .

Place the test piece 7 on the workbench.

Place the loading device on the workbench so that the beam 1 is in place. Move the two support fastening sleeves 211 along the beam 1 to make the two support brackets in proper positions, and then fasten the two support fastening bolts 212 to fix the two support brackets to the beam 1 . Then fix the second supporting connecting plate 236 of the two supporting brackets on the workbench. Rotate the support screw mandrel 239 of two support brackets, crossbeam 1 is adjusted to proper height.

Move the loading fastening sleeve 311 along the beam 1 to move the loading bracket to a proper position above the test piece 7 . Then according to the position of the loading point, with the beam 1 as the axis, the loading fastening sleeve 311 is rotated to rotate the loading bracket to an appropriate angle. Then tighten the loading fastening bolt 312 to fix the loading fastening sleeve 311 on the beam 1 . Then take the loading connecting bolt 321 as the axis, turn the loading bracket to an appropriate angle, so that the loading direction of the loading bracket coincides with the normal direction of the loading point. Keeping the position of the loading bracket unchanged, insert the limiting gear 322 from the end of the loading connecting bolt 321 , so that the limiting gear 322 abuts against the boss 3211 of the loading connecting bolt 321 . At the same time, the limit gear 322 is constantly fine-tuned, so that the limit gear 322 meshes with the fixed gear 313 on the loading fastening sleeve 311 . Then insert the limit nut 323 to lock the limit gear 322 on the boss 3211 .

The only sensor is arranged above the loading bracket, and the probe 51 of the displacement sensor 5 abuts against the top of the installation cylinder 34 and can move with the installation cylinder 34 .

Rotate the loading screw 339 so that the force sensor 4 and the indenter 6 in the installation cylinder 34 are continuously lowered, and a load is applied to the loading point of the test piece 7 . As the force sensor 4 and the indenter 6 continue to drop, the load continues to increase, and the displacement sensor 5 continuously acquires displacement data.

Through the force sensor 4 and the displacement sensor 5, the curve of the load changing with the displacement can be obtained, and the anti-dent stiffness performance and the anti-dent strength performance of the test piece 7 can be obtained after processing.

The test equipment based on the loading device provided by the utility model can effectively complete the anti-dent performance test, and the test is accurate.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. a body outer panel dent resistance energy charger, is characterized in that, comprises crossbeam, charging assembly and two supporting components;

Described two supporting components include supporting bracket, and two supporting brackets are all connected on crossbeam, and crossbeam is supported;

Described charging assembly comprises length-adjustable loading support, and in described loading stent length direction, the head end that loads support is connected on two crossbeams between supporting bracket, and the tail end that loads support is used for treating test block and loads.

2. charger according to claim 1, is characterized in that, described charging assembly also comprises loading web member;

Described loading web member comprises loading fastening sleeve and loads fastening bolt;

Described loading fastening sleeve is rotating to be sheathed on crossbeam, and described loading fastening bolt is arranged at and loads on fastening sleeve; Being positioned at the loading fastening bolt loading on fastening sleeve is fixed on loading fastening sleeve on crossbeam;

The head end of described loading support is connected to and loads on fastening sleeve.

3. charger according to claim 2, is characterized in that, described loading web member also comprises loading coupling sleeve and loads coupling bolt;

Described loading coupling sleeve is fixed on and loads on fastening sleeve; Described loading coupling bolt is fixed on the head end that loads support perpendicular to crossbeam bearing of trend;

Rotating being sheathed on of described loading coupling sleeve loads on coupling bolt.

4. charger according to claim 3, is characterized in that, described loading web member also comprises fixed gear, position limited gear and stop nut; On described loading coupling bolt, there is boss;

Described fixed gear is fixed on and loads on fastening sleeve;

Described stop nut is threaded with loading coupling bolt;

Described position limited gear is sheathed on the loading coupling bolt between stop nut and boss, and limited nut and boss grip; Described position limited gear meshes with fixed gear simultaneously.

5. according to the charger described in claim 3 or 4, it is characterized in that, described loading support comprises that the first loading connecting rod, the second loading connecting rod, the 3rd loading connecting rod, the 4th load connecting rod, first and load web joint, the second loading web joint, the 3rd loading web joint, the 4th loading web joint and load screw mandrel;

Described the first loading connecting rod, the first loading web joint, the second loading connecting rod, the second loading web joint, the 3rd loading connecting rod, the 3rd loading web joint, the 4th loading connecting rod, the 4th loading web joint successively activity are from beginning to end riveted into closed hoop; The 4th loads web joint is fixedly connected with loading coupling bolt, and described second loads web joint is used for treating test block loading;

Described loading screw mandrel is arranged in the first loading web joint and the 3rd and loads on web joint, and is threaded with the first loading web joint and the 3rd loading web joint simultaneously; Described first loads web joint loads web joint and loads wire rod thread closure contrary with loading wire rod thread closure and the 3rd.

6. charger according to claim 5, is characterized in that, described charging assembly also comprises mounting cylinder, and described mounting cylinder is fixed on the second loading web joint.

7. charger according to claim 6, is characterized in that, on described mounting cylinder, has wire lead slot.

8. according to the charger described in any one in claim 1-4, it is characterized in that, described supporting component also comprises support connecting piece;

Described support connecting piece comprises support fastening sleeve, supports fastening bolt, support and connection sleeve and support and connection bolt;

Described support fastening sleeve is rotating to be sheathed on crossbeam; Described support fastening bolt is arranged at and supports on fastening sleeve; Being positioned at the support fastening bolt supporting on fastening sleeve is fixed on support fastening sleeve on crossbeam;

Described support and connection sleeve is fixed on and supports on fastening sleeve; Described support and connection bolt is fixed on supporting bracket perpendicular to crossbeam bearing of trend;

Described support and connection sleeve is rotating to be sheathed on support and connection bolt.

9. charger according to claim 8, it is characterized in that, described supporting bracket comprises the first support link, the second support link, the 3rd support link, the 4th support link, the first support and connection plate, the second support and connection plate, the 3rd support and connection plate, the 4th support and connection plate and support screw;

Described the first support link, the first support and connection plate, the second support link, the second support and connection plate, the 3rd support link, the 3rd support and connection plate, the 4th support link, the 4th support and connection plate successively head and the tail activity are riveted into closed hoop; The 4th support and connection plate is fixedly connected with support and connection bolt;

Described support screw is arranged on the first support and connection plate and the 3rd support and connection plate, and is threaded with the first support and connection plate and the 3rd support and connection plate simultaneously; Described the first support and connection plate direction and the 3rd support and connection plate opposite direction that is threaded with support screw that is threaded with support screw.

10. a body outer panel dent resistance energy testing apparatus, is characterized in that, comprises charger, power sensor and displacement transducer;

Described charger is the body outer panel dent resistance energy charger described in any one in claim 1-9;

Described power sensor is fixed on the tail end that loads support; Described displacement transducer is with respect to the static setting of crossbeam, and the probe of described displacement transducer is synchronized with the movement with power sensor.