A high pressure impact combined brake test device and method

Abstract

The application belongs to the technical field of braking and discloses a high-pressure impact combined braking test device, which comprises a cylinder group, a test bottom support group, an upper guide group, a lower guide group, a load sensor group, a square pull pin group, an oil cylinder group, a base group and a speed measuring device group, wherein the tested braking device is arranged inside the cylinder group and below the test bottom support group, and the braking test is completed by the downward impact of the tested braking device; the upper guide group and the lower guide group are arranged in clearance fit with each other and are used for supporting and supporting the test bottom support group and constraining and guiding the downward impact of the test bottom support group; the square pull pin group is connected with the oil cylinder group and is unlocked by the driving of the oil cylinder tension and the external high-pressure gas source; the load sensor group and the speed measuring device group are respectively used for measuring the impact force and the impact braking speed. The application also discloses a corresponding method. Through the application, the braking test can be performed in a compact structure and convenient to disassemble and replace, the whole test can accurately simulate the actual working condition, the data acquisition is safe and efficient, and the data acquisition is more comprehensive.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of braking technology, and more particularly relates to a high-pressure impact combined braking test device and method suitable for testing and verifying the product bottom impact and braking performance of a braking device under high pressure (megapascal level) and large impact (hundred-ton level) conditions. BACKGROUND

[0002] The braking device is one of the key equipment for the rapid response and convenient use of the current product, and has an important influence on the rapid response and low-cost response capability of the product. Since the bottom is in direct contact with the product under the thrust of the explosive during use, the product is pushed out of the cylinder at a certain initial speed and then directly impacts the braking device, and the buffering energy absorption capability and compression form of the braking device must meet strict requirements, especially for products with a long braking distance, which requires appropriate buffering deformation and energy absorption performance. Such braking devices are mostly circular tubes with a conical ring, and the wall thickness and taper need to be controlled to achieve the best buffering and energy absorption state.

[0003] In order to shorten the development time of the braking device, improve the understanding of the performance and capability of the product, and ensure the stability of the energy absorption and deformation performance, it is usually necessary to perform a combined braking test to ensure that the performance can meet the design requirements. At the same time, due to considerations of time, manufacturing, cost, safety, and other aspects, the braking performance and deformation form cannot be tested directly using the product, and a special device needs to be used for testing.

[0004] Some devices for testing compression performance have been proposed in the prior art. However, further research shows that such existing products still have the following defects or deficiencies: first, the mechanism of such test devices is relatively complex, and the compression speed is slow, which belongs to static compression and does not match the transient impact working condition required by the experiment; second, such test devices can only compress a single buffer tube and cannot simultaneously impact and compress four or more buffer tubes; third, the current compression performance test scheme focuses more on the impact force, but does not provide test means for other key indicators such as residual pressure and impact speed, and thus cannot meet the needs of transient impact and multiple test data recording; fourth, the operation of such test devices is complex, requires high personnel requirements, and the cost and efficiency need to be improved. SUMMARY

[0005] In order to solve one or more of the above problems or needs in the prior art, the present application provides a high-pressure impact combined braking test device and method, wherein through the research and design of the composition structure of the test device and the setting mode and working mechanism of the key components, the test can not only verify the energy absorption of the braking device, but also verify the structural strength and product reliability of the bottom support group, and the damage degree and structural integrity of the bottom support after impact can be clearly observed, the product reliability is improved, and the braking energy absorption capacity and compression energy absorption form of the braking device can be more efficiently and reliably verified.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a high-pressure impact combined braking test device is provided, characterized in that the test device comprises a cylinder group, a test bottom support group, an upper guide group, a lower guide group, a load sensor group, a square pull pin group, an oil cylinder group, a base group, an optical testing device group and a speed measuring device group, wherein:

[0007] The cylinder group is in a hollow cylindrical structure, a plurality of test braking devices are arranged inside the cylinder group, and each test braking device is below the test bottom support group;

[0008] The test bottom support group is installed in the cylinder group in a clearance fit and can move in the vertical direction along the guide rail, the test bottom support group is directly placed on the upper guide group and used to move downward and impact the test braking device after being unlocked;

[0009] The upper end of the upper guide group is used to support the test bottom support group, the lower end of the upper guide group passes through the lower guide group in a clearance fit and can move in the vertical direction; the lower guide group is fixed with the base group and cooperates with the upper guide group to constrain and guide the downward movement of the test bottom support group;

[0010] The square pull pin group is arranged on the lower side of the upper guide group and in contact with the lower end of the upper guide group; the oil cylinder group is arranged on the base group and connected with the square pull pin group through a cotter pin, used to drive the square pull pin group to separate from the upper guide group under the drive of an external high-pressure gas source, thereby completing the unlocking action;

[0011] The load sensor group is arranged on the base group and used to measure the impact force when the test braking device impacts and brakes;

[0012] The optical testing device group and the speed measuring device group cooperate with each other and are used to measure the impact braking speed when the test braking device impacts and brakes.

[0013] As a further preferred embodiment of the present application, the cylinder set preferably comprises a cylinder cover, a cylinder body and a flange plate, wherein the cylinder body is welded with the flange plate of the bottom as a whole, and then the cylinder cover is connected and installed on the upper part by bolts; in addition, the guide rail for guiding the vertical movement of the test base set is arranged on the inner side of the cylinder body.

[0014] As a further preferred embodiment of the present application, the test base set is preferably made of the same material as the product to be tested, so that not only the buffering and energy-absorbing performance of the test brake device can be tested, but also the structural strength and reliability of the product to be tested can be tested.

[0015] As a further preferred embodiment of the present application, the upper guide set preferably comprises an upper circular plate, a lower circular disc, a lower circular cylinder, an adjustable gasket and an inclined gasket, wherein the upper circular plate is welded on the lower circular cylinder along the vertical direction through the lower circular disc, and a plurality of reinforcing ribs are arranged on the inner side of the upper circular plate for supporting the test base set; the bottom of the lower circular cylinder is sequentially provided with the adjustable gasket and the inclined gasket, and the adjustable gasket can be increased or decreased according to the height requirement, and the inclined gasket abuts against the square pull pin set to decompose the vertical pressure into horizontal thrust when unlocking, so as to increase the unlocking force.

[0016] As a further preferred embodiment of the present application, the lower guide set preferably comprises a buffer rubber ring, a lower guide circular plate, a guide cylinder and a lower guide plate, wherein the lower guide circular plate is welded on the lower guide plate along the vertical direction through the guide sleeve, and a plurality of small reinforcing ribs and large reinforcing ribs are arranged between the lower guide circular plate and the lower guide plate; in addition, the upper part of the lower guide circular plate is vertically provided with the buffer rubber ring for sleeving the lower end of the upper guide set; the lower guide plate is preferably detachably provided with a lower copper plate, thereby facilitating multiple uses.

[0017] As a further preferred embodiment of the present application, the load sensor set preferably comprises an upper circular threaded plate, a load sensor and a lower plate, wherein the lower circular threaded plate is connected with the load sensor through threads, and then is installed on the lower plate through bolts; in addition, the bottom surface of the lower circular threaded plate keeps in contact with the upper force testing surface of the load sensor, in this way, the impact force from the test brake device is transmitted to the load sensor through the upper circular threaded plate.

[0018] As a further preferred embodiment of the present application, the square pull pin set preferably comprises a square pull pin upper copper plate, a square pull pin upper embedded plate, a square pull pin body and a square pull pin lower embedded plate, wherein the square pull pin upper embedded plate and the square pull pin lower embedded plate are arranged on the upper and lower sides of the square pull pin body respectively, and the square pull pin upper copper plate is further arranged on the upper side of the square pull pin upper embedded plate; in addition, the square pull pin upper embedded plate and the square pull pin upper copper plate have the same inclination angle relative to the horizontal plane, and complementarily fit with the inclined washer of the upper guide set.

[0019] As a further preferred embodiment of the present application, the oil cylinder set preferably comprises a front support seat, an oil cylinder, a rear support seat and a steering plate, wherein the oil cylinder is horizontally arranged above the front support seat and the rear support seat, and converts the pushing force of the oil cylinder into the pulling force of the square pull pin set through the steering plate, thereby unlocking.

[0020] As a further preferred embodiment of the present application, the speed measuring device set preferably comprises a triangular connecting plate, a rectangular connecting plate body, a triangular speed measuring plate and a scale speed measuring rod, wherein the upper and lower ends of the rectangular connecting plate are connected with the triangular connecting plate and the triangular speed measuring plate through bolts respectively, the triangular speed measuring plate is horizontally arranged and vertically connected with the scale speed measuring rod at the end through a bolt; the optical testing device set is used for image shooting of the scale speed measuring rod and corresponding calculation of data related to the impact braking speed.

[0021] As a further preferred embodiment of the present application, the base set and the optical testing device set are fixedly connected with the ground by chemical bolts, and maintain a safe distance from each other.

[0022] According to another aspect of the present application, a corresponding high-pressure impact combined braking test method is also provided.

[0023] As a further preferred embodiment of the present application, in the test method, the external high-pressure gas source connected with the oil cylinder set is preferably above megapascal level, and the impact of the test base set is preferably above hundred-ton level.

[0024] Overall, compared with the prior art, the above technical solutions conceived by the present application mainly have the following technical advantages:

[0025] 1. The test equipment provided by the present application uses air pressure to equivalent the speed of the impact braking device, and realizes the constraint and guidance of the bottom support through the constraint and guidance of the upper and lower guide sets, which can more accurately simulate the actual working condition compared with the prior art, and the test bottom support is not easy to be eccentric;

[0026] 2、The test equipment provided by the application is equipped with a load sensor group to measure the impact force of the impact brake, and the speed of the impact brake is measured through an optical test equipment, so that compared with the prior art, more comprehensive and accurate test results can be obtained, data acquisition is safe and efficient, the test efficiency is higher, and the test bottom support and the tested brake device are convenient to disassemble.

[0027] 3、The test equipment provided by the application can also use the same test bottom support group as the product when impacting the tested brake device, so that not only the energy absorption of the brake device can be verified, but also the structural strength and product reliability of the bottom support group can be verified, the damage degree and structural integrity of the bottom support after impact can be clearly observed, the product reliability is improved, the energy absorption capacity and compression energy absorption mode of the brake device can be verified.

[0028] 4、The high-pressure impact combined brake test equipment provided by the application has compact overall structure, is convenient to operate and disassemble, has good anti-offloading performance of the guide and the bottom support, and the obtained test parameter record is complete, the tethering, deformation and energy absorption capacity of the brake device can be verified, the verification capacity is more abundant, and the data is more comprehensive, so the high-pressure impact combined brake test equipment is especially suitable for brake test application occasions of more than 100 tons under various complex working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a main structure sectional view of the high-pressure impact combined brake test equipment according to the application.

[0030] Figure 2 It is a main structure perspective view of the high-pressure impact combined brake test equipment according to the application.

[0031] Figure 3 It is a structure sectional view of the cylinder group according to the preferred embodiment of the application.

[0032] Figure 4 It is a structure perspective view of the upper guide group according to the preferred embodiment of the application.

[0033] Figure 5 It is a structure perspective view of the lower guide group according to the preferred embodiment of the application.

[0034] Figure 6 It is a structure perspective view of the load sensor group according to the preferred embodiment of the application.

[0035] Figure 7 It is a structure perspective view of the square pull pin group according to the preferred embodiment of the application.

[0036] Figure 8 It is a structure perspective view of the oil cylinder group according to the preferred embodiment of the application.

[0037] Figure 9is a structure perspective view of a speed measuring device group according to a preferred embodiment of the present application;

[0038] In all the drawings, the same reference signs are used to denote the same elements or structures, wherein:

[0039] 100 - barrel group; 200 - test bottom support group; 300 - upper guide group; 400 - lower guide group; 500 - test brake device; 600 - load sensor group; 700 - square pull pin group; 800 - oil cylinder group; 900 - base group; 1000 - optical testing device group; 1100 - speed measuring device group; 1 - barrel cover; 2 - barrel; 3 - guide rail; 4 - flange plate; 5 - upper circular plate; 6 - reinforcing rib; 7 - lower circular disc; 8 - lower barrel; 9 - adjustable gasket; 10 - inclined gasket; 11 - buffer rubber ring; 12 - lower guide circular plate; 13 - small reinforcing rib; 14 - large reinforcing rib; 15 - guide barrel; 16 - lower guide plate; 17 - lower copper plate; 18 - upper circular threaded plate; 19 - load sensor; 20 - lower plate; 21 - square pull pin upper copper plate; 22 - square pull pin upper embedded plate; 23 - square pull pin body; 24 - square pull pin lower embedded plate; 25 - front support seat; 26 - oil cylinder; 27 - rear support seat; 28 - turning plate; 29 - split pin; 30 - triangular connecting plate; 31 - rectangular connecting plate body; 32 - triangular speed measuring plate; 33 - scale speed measuring rod. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0041] Figure 1 is a main body structure sectional view of a high-pressure impact combined brake test equipment according to the present application, Figure 2 is a main body structure perspective view of a high-pressure impact combined brake test equipment according to the present application. The present application will be explained more specifically below with reference to Figure 1 and Figure 2 .

[0042] As shown in Figure 1 , the test equipment of the present application mainly includes a barrel group 100, a test bottom support group 200, an upper guide group 300, a lower guide group 400, a load sensor group 600, a square pull pin group 700, an oil cylinder group 800, a base group 900, an optical testing device group 1000 and a speed measuring device group 1100, which will be explained and described one by one below.

[0043] For the cylinder group 100, it is internally hollow cylindrical structure, a plurality of test brake device 500 is arranged inside the cylinder group 100, and each of the test brake device 500 is below the test bottom support group 200.

[0044] More specifically, according to a preferred embodiment of the present application, can be seen simultaneously Figure 3 The cylinder group 100 preferably includes cylinder cover 1, cylinder 2 and flange plate 4, wherein the cylinder 2 and the bottom of the flange plate welded as a whole, and then using bolts in the upper part of the installation of the cylinder cover 1; in addition, the guide rail for guiding the test bottom support group 200 vertical motion is arranged in the inside of the cylinder 2.

[0045] For the test bottom support group 200, it is installed in the gap between the cylinder group 100 and can move in the vertical direction along the guide rail, the test bottom support group 200 is placed directly on the upper guide group 300, and is used to move downward after unlocking and impact the test brake device 500.

[0046] According to a preferred embodiment of the present application, the test bottom support group, such as can be made of carbon fiber material. In addition, the test bottom support group is preferably made of the same material as the product to be tested, so that in the test, not only can test the buffering energy absorption performance of the test brake device, but also can test the structural strength and reliability of the product to be tested.

[0047] For the upper guide group 300, its upper end is used to support the test bottom support group 200, its lower end is gap fit through the lower guide group 400 and can move along the vertical direction; the lower guide group 400 is fixed with the base group 900, and cooperates with the upper guide group 300 to constrain and guide the downward movement of the test bottom support group 200;

[0048] More specifically, according to a preferred embodiment of the present application, can be seen simultaneously Figure 4 The upper guide group 300 can include upper circular plate 5, lower disc 7, lower cylinder 8, adjustable gasket 9 and inclined gasket 10, wherein the upper circular plate 5 is welded on the lower cylinder 8 through the lower disc 7 along the vertical direction, and is provided with a plurality of reinforcing ribs 6 on the inside for supporting the test bottom support group 200; the bottom of the lower cylinder 8 is provided with the adjustable gasket 9 and the inclined gasket 10 in turn, and the adjustable gasket 9 can be increased or decreased according to the height requirement, and the inclined gasket 10 is preferably a 10° inclined gasket and abuts against the square pull pin group 700, for decomposing the vertical pressure into horizontal thrust when unlocking, so as to increase the unlocking force.

[0049] According to another preferred embodiment of the present application, referring to Figure 5 The lower guide group 400 preferably comprises a buffer rubber ring 11, a lower guide circular plate 12, a guide sleeve 15, and a lower guide plate 16, wherein the lower guide circular plate 12 is welded on the lower guide plate 16 along the vertical direction through the guide sleeve 15, and a plurality of small reinforcing ribs 13 and large reinforcing ribs 14 are arranged between the lower guide circular plate 12 and the lower guide plate 16; in addition, the upper part of the lower guide circular plate 12 vertically arranges the buffer rubber ring 11 for sleeving the lower end of the upper guide group 300; the lower copper plate 17 is preferably detachably mounted on the lower guide plate 16, thereby facilitating multiple uses.

[0050] The square pull pin group 700 is arranged on the lower side of the upper guide group 300 and in contact with the lower end of the upper guide group 300; the oil cylinder group 800 is arranged on the base group 900 and connected with the square pull pin group 700 through a cotter pin, for driving the square pull pin group 700 to separate from the upper guide group 300 under the drive of an external high-pressure gas source, thereby completing the unlocking action. The oil cylinder group 700 is connected with the base group 900 through bolts, and connected with the square pull pin group 700 through a cotter pin, and connected with a pump station through a high-pressure oil pipe for driving.

[0051] More specifically, according to a preferred embodiment of the present application, referring to Figure 7 The square pull pin group 700 preferably comprises a square pull pin upper copper plate 21, a square pull pin upper embedded plate 22, a square pull pin body 23, and a square pull pin lower embedded plate 24, wherein the square pull pin upper embedded plate 22 and the square pull pin lower embedded plate 24 are arranged on the upper and lower sides of the square pull pin body 23, respectively, and the square pull pin upper copper plate 21 is further arranged on the upper side of the square pull pin upper embedded plate 22; in addition, the square pull pin upper embedded plate 22 and the square pull pin upper copper plate 21 both have the same inclination angle relative to the horizontal plane, and complementarily fit with the inclined washer 10 of the upper guide group 300.

[0052] More specifically, according to a preferred embodiment of the present application, referring to Figure 8 The oil cylinder group 800 preferably comprises a front support seat 25, an oil cylinder 26, a rear support seat 27, and a steering plate 28, wherein the oil cylinder 26 is horizontally arranged above the front support seat 25 and the rear support seat 27, and converts the pushing force of the oil cylinder into the pulling force on the square pull pin group 700 through the steering plate 28, thereby unlocking.

[0053] The load sensor group 600 is arranged on the base group 900 and used for measuring the impact force of the test brake device 500 when impact braking; in addition, the optical testing device group 1000 and the speed measuring device group 1100 are matched with each other and used for measuring the impact braking speed of the test brake device 500 when impact braking.

[0054] More specifically, referring to a preferred embodiment of the present application, the load sensor group 600 preferably comprises an upper round threaded plate 18, a load sensor 19 and a lower plate 20, wherein the lower round threaded plate 18 is connected with the load sensor 19 through threads and then is installed on the lower plate 20 through bolts; in addition, the bottom surface of the lower round threaded plate 18 is in contact with the upper force testing surface of the load sensor 19, in this way, the impact force from the test brake device 500 is transmitted to the load sensor 19 through the upper round threaded plate 18. Figure 6 More specifically, referring to a preferred embodiment of the present application, the speed measuring device group 1100 preferably comprises a triangular connecting plate 30, a rectangular connecting plate body 31, a triangular speed measuring plate 32 and a scale speed measuring rod 33, wherein the upper and lower ends of the rectangular connecting plate body 31 are connected with the triangular connecting plate 30 and the triangular speed measuring plate 32 through bolts respectively, the triangular speed measuring plate 32 is arranged horizontally and is connected with the scale speed measuring rod 33 through bolts at the end vertically; the triangular speed measuring plate is connected with the scale speed measuring rod through bolts and is bonded with a yellow scale for high-speed photography speed calculation reference. The optical testing device group 1000 is used for image shooting of the scale speed measuring rod 33 and corresponding calculation to obtain data about the impact braking speed.

[0055] Figure 9 More specifically, referring to a preferred embodiment of the present application, the speed measuring device group 1100 preferably comprises a triangular connecting plate 30, a rectangular connecting plate body 31, a triangular speed measuring plate 32 and a scale speed measuring rod 33, wherein the upper and lower ends of the rectangular connecting plate body 31 are connected with the triangular connecting plate 30 and the triangular speed measuring plate 32 through bolts respectively, the triangular speed measuring plate 32 is arranged horizontally and is connected with the scale speed measuring rod 33 through bolts at the end vertically; the triangular speed measuring plate is connected with the scale speed measuring rod through bolts and is bonded with a yellow scale for high-speed photography speed calculation reference. The optical testing device group 1000 is used for image shooting of the scale speed measuring rod 33 and corresponding calculation to obtain data about the impact braking speed.

[0056] The base group 900 is combined and welded by several channel steels, square tubes, T-shaped bottom plates, square bottom plates, rectangular bottom plates and reinforcing ribs and has an overall inverted T-shaped appearance. In addition, the base group 900 and the optical testing device group 1000 can be fixedly connected with the ground through chemical bolts, respectively, and they are kept at a safe distance (such as about 2m) from each other.

[0057] Before the test, the oil cylinder group is connected with the base group through bolts and is connected with the square pull pin group through a split pin, the load sensor group is connected with the base group through bolts, the test brake device is connected with the cylinder group through bolts, the upper guide group is directly placed above the square pull pin group, the accompanying test bottom support is directly placed on the upper guide group, and the cylinder group is connected with the load sensor group through bolts.

[0058] ​During the test, the pressure chamber is inflated through the inflation port, and after reaching the required pressure, the oil cylinder group is driven by the pump station to work, the square pull pin group is driven by the oil cylinder group to unlock, the upper guide group falls under the action of the pressure, and the test bottom support impacts the test brake device under the action of the pressure to complete the test.

[0059] Through the above design, since the upper guide group and the lower guide group are gap-fitted, lubricating grease can be applied between the upper guide group and the lower guide group during the test to reduce friction. The test bottom support group and the cylinder group are gap-fitted, which can control the gap, ensure the air tightness effect, increase the guiding ability, reduce the risk of jamming, have good guiding and centering performance, and have high similarity to the actual constraint state.

[0060] The test equipment of the present application mainly uses profiles such as square tubes, steel pipes, channel steels, etc., has simple structure, fewer parts, and lower cost, can greatly reduce the test cost and verification cost. For example, the 10° inclined pad of the upper guide group, the lower copper plate of the lower guide group, and the upper embedded plate of the square pull pin are all designed as replaceable parts, which are easy to install and disassemble, and have high test efficiency. The height-adjustable structure design of the upper guide group meets the boundary conditions of various test conditions, greatly saving the test cost.

[0061] The test equipment of the present application can use the same test bottom support group as the product when impacting the test brake device, which can not only verify the energy absorption of the brake device, but also verify the structural strength and product reliability of the bottom support group, clearly observe the damage degree and structural integrity of the bottom support after impact, improve the product reliability, and verify the braking energy absorption capacity and compression energy absorption form of the brake device.

[0062] The working principle and implementation process of the test equipment according to the present application will be described in detail below.

[0063] The test equipment of the present application is mainly used for simulating a hundred-ton level impact, generating a megapascal level air pressure and a hundred-ton level oil cylinder tension, and verifying the braking performance of the brake device uniformly distributed in four quadrants in the cylinder. Specifically, it is to verify whether the four sets of buffer tubes can achieve the designed state of specific energy absorption, total energy absorption, deformation stability, etc. The test tool has the characteristics of high impact accuracy, high safety, and high simulation degree, and can safely and accurately complete the related performance test of the brake device.

[0064] Correspondingly, after the equipment is installed, the following operations are sequentially performed;

[0065] 1. The test is performed by a test personnel with operating qualifications, and no one is allowed to stand around the test tool during the test. The test personnel must wear a safety helmet and take other safety precautions, and a site protection is set up;

[0066] 2. After confirming that the camera function, hydraulic cylinder, and sensors are working properly, relevant personnel should evacuate.

[0067] 3. Before the test, the safety personnel must confirm the on-site safety and protection conditions, and remove non-designated operators. The test can only be carried out after everything is in order.

[0068] 4. Use four sets of high-pressure gas cylinders to start filling slowly at the same time, continuously increasing the pressure and maintaining it near the specified pressure value;

[0069] 5. Start the pump station, the hydraulic cylinder begins to pull the pin, the square pin is fully pulled out, the unlocking action is completed, and the bottom support impacts the braking device.

[0070] 6. After the pump station, the test equipment will be turned on to measure the speed at a specified time (adjusted according to the time of cylinder pull-out on site). The specific time of turning on will be determined on site based on the specific data of the inflation test.

[0071] 7. After the base impacts the braking device, close the high-pressure gas cylinder, open the pressure relief pipeline to release the gas, and stop collecting data after the pressure is released.

[0072] 8. Only after the data collection is completed and the experiment is considered finished can one enter the experimental site;

[0073] 9. Upon entering the site, promptly take photos to record the site and product conditions;

[0074] 10. Follow instructions during the process and stop immediately if any abnormal situation occurs.

[0075] In summary, the testing equipment according to the present invention not only utilizes air pressure to equivalently represent the speed at which the base impacts the braking device, but also replaces the constraint and guidance of the base during product use through the constraint and guidance of the upper and lower guide groups. Therefore, compared with existing technologies, it can more accurately simulate and replace actual working conditions, and the test base is less prone to eccentricity. Furthermore, the testing equipment is equipped with a load sensor group to measure the impact force of the impact braking, and simultaneously uses optical testing equipment to measure the impact braking speed. Therefore, compared with existing technologies, it can obtain more comprehensive and accurate test results, and data acquisition is safe and efficient. Additionally, the test base and the tested braking device are easy to disassemble, resulting in higher testing efficiency. Therefore, it is particularly suitable for braking testing applications of hundreds of tons or more under various complex working conditions, and has good practical value and application prospects.

[0076] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A high pressure impact combined brake test apparatus, characterized by, The test device comprises a cylinder group (100), a test bottom support group (200), an upper guide group (300), a lower guide group (400), a load sensor group (600), a square pull pin group (700), an oil cylinder group (800), a base group (900), an optical testing device group (1000) and a speed measuring device group (1100), wherein: The cylinder group (100) is in a hollow cylindrical structure, a plurality of test brake devices (500) are arranged inside the cylinder group (100), and each test brake device (500) is below the test bottom support group (200); The test bottom support group (200) is gap-fitted and installed inside the cylinder group (100) and can move in the vertical direction along the guide rail, the test bottom support group (200) is directly placed on the upper guide group (300) and used to move downward after unlocking and impact the test brake device (500); The upper end of the upper guide group (300) is used to support the test bottom support group (200), the lower end of the upper guide group (300) is gap-fitted through the lower guide group (400) and can move in the vertical direction; the lower guide group (400) is fixed with the base group (900) and cooperates with the upper guide group (300) to constrain and guide the downward movement of the test bottom support group (200); wherein, for the upper guide group (300), it comprises an upper circular plate (5), a lower circular disc (7), a lower cylinder (8), an adjustable gasket (9) and an inclined gasket (10), and the inclined gasket (10) is in abutment with the square pull pin group (700) for decomposing the vertical pressure into horizontal thrust when unlocking, thereby achieving the effect of increasing the unlocking pulling force; for the lower guide group (400), it comprises a buffer rubber ring (11), a lower guide circular plate (12), a guide cylinder (15) and a lower guide plate (16), and the upper part of the lower guide circular plate (12) vertically sets the buffer rubber ring (11) for sleeving the lower end of the upper guide group (300); The square pull pin group (700) is arranged on the lower side of the upper guide group (300) and in contact with the lower end of the upper guide group (300); the oil cylinder group (800) is arranged on the base group (900) and connected with the square pull pin group (700) through a split pin, used to drive the square pull pin group (700) to separate from the upper guide group (300) under the drive of an external high-pressure gas source, thereby completing the unlocking action; The load sensor group (600) is arranged on the base group (900) and used to measure the impact force when the test brake device (500) impacts and brakes; The optical testing device group (1000) and the speed measuring device group (1100) cooperate with each other and are used to measure the impact braking speed when the test brake device (500) impacts and brakes.

2. The high pressure impact combined brake test apparatus as recited in claim 1, wherein, For the barrel group (100), it includes a barrel cover (1), a barrel (2) and a flange plate (4), wherein the barrel (2) and the flange plate (4) at the bottom are welded as a whole, and then the barrel cover (1) is connected and installed at the upper part by bolts; in addition, the guide rail for guiding the vertical movement of the accompanying test bottom support group (200) is arranged on the inner side of the barrel (2).

3. The high pressure impact combined brake test apparatus as recited in claim 2, wherein, For the accompanying test bottom support group (200), it is made of the same material as the product to be tested, so that not only the buffering and energy absorption performance of the test brake device (500) can be tested, but also the structural strength and reliability of the product to be tested can be tested.

4. The high pressure impact combined brake test apparatus as recited in claim 3, wherein, For the upper guide group (300), the upper circular plate (5) is welded on the lower cylinder (8) along the vertical direction through the lower disc (7), and a plurality of reinforcing ribs (6) are arranged on the inner side thereof for supporting and holding the accompanying test bottom support group (200); the bottom of the lower cylinder (8) is sequentially provided with the adjustable gasket (9) and the inclined gasket (10), and the adjustable gasket (9) can be increased or decreased according to the height requirement.

5. The high pressure impingement combined brake test apparatus as set forth in claim 4, wherein For the lower guide group (400), the lower guide circular plate (12) is welded on the lower guide plate (16) along the vertical direction through the guide cylinder (15), and a plurality of small reinforcing ribs (13) and large reinforcing ribs (14) are arranged between the lower guide circular plate (12) and the lower guide plate (16); in addition, the lower copper plate (17) is detachably mounted on the lower guide plate (16), thereby facilitating multiple uses.

6. The high pressure impingement combined brake test apparatus according to any one of claims 1 to 5, wherein For the load sensor group (600), it includes an upper circular threaded plate (18), a load sensor (19) and a lower plate (20), wherein the upper circular threaded plate (18) is connected with the load sensor (19) through threads, and then is mounted on the lower plate (20) together through bolts; in addition, the bottom surface of the upper circular threaded plate (18) and the upper force testing surface of the load sensor (19) are in contact, in this way, the impact force from the test brake device (500) is transmitted to the load sensor (19) through the upper circular threaded plate (18).

7. The high pressure impingement combined brake test apparatus as set forth in claim 4, wherein For the square pull pin group (700), it includes a square pull pin upper copper plate (21), a square pull pin upper embedded plate (22), a square pull pin body (23) and a square pull pin lower embedded plate (24), wherein the square pull pin upper embedded plate (22) and the square pull pin lower embedded plate (24) are arranged on the upper and lower sides of the square pull pin body (23) respectively, and the square pull pin upper copper plate (21) is further arranged on the upper side of the square pull pin upper embedded plate (22); in addition, the square pull pin upper embedded plate (22) and the square pull pin upper copper plate (21) have the same inclination angle relative to the horizontal plane, and complementarily fit with the inclined gasket (10) of the upper guide group (300).

8. The high pressure impact combined brake test apparatus as set forth in claim 7, wherein For the oil cylinder group (800), it comprises a front support seat (25), an oil cylinder (26), a rear support seat (27) and a steering plate (28), wherein the oil cylinder (26) is horizontally arranged on the front support seat (25) and the rear support seat (27), and the pushing force of the oil cylinder is converted into pulling force on the square pin group (700) through the steering plate (28), so as to be unlocked.

9. A high pressure impact combined brake test method, characterized by, The method is accomplished by using the device according to any one of claims 1-8.

10. The high pressure impingement combined brake test method according to claim 9, wherein In the test method, the external high-pressure gas source connected to the oil cylinder group is above megapascal level, and the impact of the test bottom support group is above hundred-ton level.

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