High-pressure impact combined brake test equipment and method

Abstract

The invention belongs to the related field of brake technology, and discloses high-pressure impact combined brake test equipment, which comprises a barrel group, an accompanying 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, and is characterized in that a tested brake device is arranged in the barrel group and is positioned below the accompanying test bottom support group; a brake test is completed by downward impact; the upper guide group and the lower guide group are arranged in a clearance fit manner, and are used for supporting the test accompanying bottom support group and restraining and guiding the downward impact of the test accompanying bottom support group; the square pull pin set is connected with the oil cylinder set and is driven by the pulling force of an oil cylinder and an external high-pressure air source to execute impact unlocking. And the load sensor group and the speed measuring device group are respectively used for measuring the impact force and the impact braking speed. The invention further discloses a corresponding method. According to the invention, the brake test can be executed in a compact structure and convenient dismounting mode, the whole test can accurately simulate the actual working condition, and the data acquisition is safe, efficient and more comprehensive.

Description

Technical Field

[0001] The present invention belongs to the field related to braking technology, and more specifically, relates to a high-pressure impact combined braking test equipment and method, which is suitable for testing and verifying the braking performance of product base impact and braking device under high pressure (megapascal level) and large impact (hundred-ton level) conditions. Background Art

[0002] The brake device is one of the key devices for the rapid response and convenient use of current products, and has an important impact on the rapid response and low-cost response capabilities of the products. Since the bottom bracket is in direct contact with the product under the thrust of the gunpowder explosion during use, the product will directly collide with the brake device after being pushed out of the cylinder at a certain initial velocity. The buffering energy absorption capacity and compression form of the brake device must meet more stringent requirements, especially for some products with a long braking distance, which requires it to have appropriate buffering deformation energy absorption performance. This type of brake device is mostly made of a round tube with a tapered round link. In order to control the buffering energy absorption deformation, it is necessary to control the wall thickness and taper to achieve the best buffering energy absorption state.

[0003] In order to shorten the development time of the brake device, improve the understanding of the product performance and ensure the stability of its energy absorption and deformation performance, it is usually necessary to conduct a combined braking test to ensure that its performance can meet the design requirements. At the same time, due to considerations such as time, manufacturing, cost and safety, the verification of its braking performance and deformation form cannot be done directly with the product, but requires the use of special equipment for testing.

[0004] Some equipment dedicated to compression performance testing has been proposed in the prior art. However, further research shows that such existing products still have the following defects or deficiencies: First, the structure of such testing equipment is relatively complex, and the compression speed is relatively slow, which belongs to static compression, and does not conform to the transient impact condition required by the experiment; second, such testing equipment can only compress a single buffer tube, and cannot perform impact compression on four or more buffer tubes at the same time; third, the current compression performance test scheme focuses more on the impact force, but does not provide testing methods for other key indicators such as residual pressure and impact speed, so it cannot meet the needs of transient impact and multiple test data recording; fourth, the operation of such testing equipment is complicated, with high requirements on personnel, and the cost and efficiency need to be improved. Summary of the invention

[0005] In response to one or more of the above defects or needs in the prior art, the present invention provides a high-pressure impact combined braking test equipment and method, wherein the composition structure of the test equipment and the arrangement method and working mechanism of its multiple key components are re-studied and designed. During the test, not only the buffering and energy absorption of the braking device can be verified, but also the structural strength and product reliability of the base group can be verified. The degree of damage and structural integrity of the base after impact can be clearly observed, thereby improving product reliability. At the same time, the braking energy absorption capacity and compression energy absorption form of the braking device can be verified more efficiently and reliably.

[0006] To achieve the above object, according to one aspect of the present invention, a high-pressure impact combined brake test equipment is provided, characterized in that the test equipment includes a cylinder group, a test base group, an upper guide group, a lower guide group, a load sensor group, a square pin group, a cylinder group, a base group, an optical test device group and a speed measuring device group, wherein:

[0007] The cylinder group is a hollow cylindrical structure, and a plurality of tested brake devices are arranged inside the cylinder group, and each of the tested brake devices is located below the test base group;

[0008] The test supporting base group is installed inside the cylinder group with clearance fit and can move in the vertical direction along the guide rail. The test supporting base group is directly placed on the upper guide group and is used to move downward and hit the tested brake device after unlocking.

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

[0010] The square pin group is arranged at the lower side of the upper guide group and contacts the lower end of the upper guide group; the oil cylinder group is arranged on the base group and connected to the square pin group through a cotter pin, and is used to drive the square pin group to disengage 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 is used to measure the impact force of the tested brake device during impact braking;

[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 of the tested braking device during impact braking.

[0013] As a further preferred embodiment of the present invention, the cylinder group preferably includes a cylinder cover, a cylinder and a flange plate, wherein the cylinder and the flange plate at the bottom are welded into a whole, and then the cylinder cover is connected and installed at the top with bolts; in addition, the guide rail for guiding the vertical movement of the test base group is arranged on the inner side of the cylinder.

[0014] As a further preference of the present invention, the test base group is preferably made of the same material as the product to be tested. Accordingly, during the test, not only the buffering and energy absorption performance of the tested braking device can be tested, but also the structural strength and reliability of the product to be tested can be tested.

[0015] As a further preference of the present invention, for the upper guide group, it preferably includes an upper circular plate, a lower disc, a lower cylinder, an adjustable gasket and an inclined gasket, wherein the upper circular plate is welded to the lower cylinder along the vertical direction through the lower disc, and a plurality of reinforcing ribs are arranged on the inner side thereof for supporting and holding the companion test bottom support group; the adjustable gasket and the inclined gasket are arranged in sequence at the bottom of the lower cylinder, and the adjustable gasket can be increased or decreased according to height requirements, and the inclined gasket is abutted against the square pull pin group, and is used to decompose the vertical pressure into horizontal thrust when unlocking, thereby achieving the effect of increasing the unlocking pulling force.

[0016] As a further preference of the present invention, the lower guide group preferably includes 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 to 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 buffer rubber ring is vertically arranged on the upper part of the lower guide circular plate for fitting the lower end of the upper guide group; and the lower guide plate is preferably also detachably mounted with a lower copper plate, thereby facilitating multiple uses.

[0017] As a further preferred embodiment of the present invention, the load sensor group preferably includes an upper circular threaded plate, a load sensor and a lower plate, wherein the lower circular threaded plate is connected to the load sensor through threads and then installed on the lower plate together through bolts; in addition, the bottom surface of the lower circular threaded plate maintains contact with the upper force test surface of the load sensor, in this way, the impact force from the tested braking device is transmitted to the load sensor through the upper circular threaded plate.

[0018] As a further preferred embodiment of the present invention, the square pull pin group preferably includes a square pull pin upper copper plate, a square pull pin upper insert plate, a square pull pin body and a square pull pin lower insert plate, wherein the square pull pin upper insert plate and the square pull pin lower insert plate are respectively arranged on the upper and lower sides of the square pull pin body, and the square pull pin upper copper plate continues to be arranged on the upper side of the square pull pin upper insert plate; in addition, the square pull pin upper insert plate and the square pull pin upper copper plate both have the same inclination angle relative to the horizontal plane, and maintain mutual complementation with the inclined gasket of the upper guide group.

[0019] As a further preferred embodiment of the present invention, the cylinder group preferably includes a front support seat, a cylinder, a rear support seat and a steering plate, wherein the cylinder is horizontally arranged above the front support seat and the rear support seat, and the thrust of the cylinder is converted into a pulling force on the square pull pin group through the steering plate, thereby unlocking the cylinder.

[0020] As a further preferred embodiment of the present invention, the speed measuring device group preferably includes 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 respectively connected to the triangular connecting plate and the triangular speed measuring plate by bolts, and the triangular speed measuring plate is horizontally arranged and vertically connected to the scale speed measuring rod by bolts at the end; the optical testing device group is used for capturing images of the scale speed measuring rod and correspondingly calculating and obtaining data on the impact braking speed.

[0021] As a further preferred embodiment of the present invention, the base group and the optical testing device group are respectively fixedly connected to the ground using chemical bolts, and they maintain a safe distance from each other.

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

[0023] As a further preference of the present invention, in the above test method, the external high-pressure gas source connected to the cylinder group is preferably above the megapascal level, and the impact of the test base group is preferably above the hundred-ton level.

[0024] In general, the above technical solution conceived by the present invention has the following technical advantages compared with the prior art:

[0025] 1. The test equipment provided by the present invention uses air pressure to equalize the speed of the bottom bracket hitting the brake device, and at the same time realizes the constraint and guidance of the bottom bracket through the constraint and guidance of the upper and lower guide groups. Compared with the prior art, it can more accurately simulate the actual working conditions, and the test bottom bracket is not easy to be eccentric;

[0026] 2. The test equipment provided by the present invention is equipped with a load sensor group to measure the impact force of the impact brake, and the optical test equipment is used to measure the speed of the impact brake. Compared with the prior art, more comprehensive and accurate test results can be obtained, and data collection is safe and efficient. At the same time, the test base and the tested brake device are easy to disassemble, and the test efficiency is higher;

[0027] 3. The test equipment provided by the present invention can also use the same test bottom bracket group as the product when impacting the tested brake device. During the test, not only the buffering and energy absorption of the brake device can be verified, but also the structural strength of the bottom bracket group and the product reliability can be verified. The degree of damage and structural integrity of the bottom bracket after impact can be clearly observed, which improves the product reliability and verifies the braking energy absorption capacity and compression energy absorption form of the brake device;

[0028] 4. The high-pressure impact combined brake test equipment provided by the present invention has a compact overall structure, is easy to operate and assemble and disassemble, has good anti-eccentricity of the guide and base, and the test parameters obtained are recorded completely, which can verify the retention, deformation and energy absorption capacity of the brake device. The verification ability is richer and the data is more comprehensive, so it is particularly suitable for brake test applications above 100 tons under various complex working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a cross-sectional view of the main structure of the high-pressure impact combined brake test equipment according to the present invention;

[0030] Figure 2 It is a three-dimensional diagram of the main structure of the high-pressure impact combined brake test equipment according to the present invention;

[0031] Figure 3 is a structural cross-sectional view of a cylinder assembly according to a preferred embodiment of the present invention;

[0032] Figure 4 is a structural stereogram of an upper guide group according to a preferred embodiment of the present invention;

[0033] Figure 5 is a structural stereogram of a lower guide group according to a preferred embodiment of the present invention;

[0034] Figure 6 is a structural stereogram of a load sensor group according to a preferred embodiment of the present invention;

[0035] Figure 7 is a structural stereogram of a square pull pin assembly according to a preferred embodiment of the present invention;

[0036] Figure 8 is a structural stereogram of a cylinder group according to a preferred embodiment of the present invention;

[0037] Fig. 9is a structural stereogram of a speed measuring device group according to a preferred embodiment of the present invention;

[0038] Throughout the drawings, the same reference numerals are used to denote the same elements or structures, wherein:

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

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

[0041] Figure 1 is a cross-sectional view of the main structure of the high-pressure impact combined brake test equipment according to the present invention, Figure 2 This is a three-dimensional diagram of the main structure of the high-pressure impact combined brake test equipment according to the present invention. Figure 1 and Figure 2 To explain the present invention in more detail.

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

[0043] The cylinder group 100 is a hollow cylindrical structure. A plurality of tested braking devices 500 are arranged inside the cylinder group 100 , and each of the tested braking devices 500 is located below the test base group 200 .

[0044] More specifically, according to a preferred embodiment of the present invention, it is possible to simultaneously refer to Figure 3 The cylinder group 100 may preferably include a cylinder cover 1, a cylinder 2 and a flange plate 4, wherein the cylinder 2 is welded to the flange plate at the bottom into a whole, and then the cylinder cover 1 is connected and installed at the top with bolts; in addition, the guide rail for guiding the vertical movement of the test base group 200 is arranged on the inner side of the cylinder 2.

[0045] As for the test base support group 200, it is installed inside the cylinder group 100 with clearance fit and can move in the vertical direction along the guide rail. The test base support group 200 is directly placed on the upper guide group 300 and is used to move downward and impact the tested brake device 500 after unlocking.

[0046] According to a preferred embodiment of the present invention, the test base assembly can be made of, for example, carbon fiber material. In addition, the test base assembly is preferably made of the same material as the product to be tested, so that during the test, not only the buffering energy absorption performance of the tested brake device can be tested, but also the structural strength and reliability of the product to be tested can be tested.

[0047] As for the upper guide group 300, its upper end is used to support the test bottom support group 200, and its lower end passes through the lower guide group 400 with clearance and can move in the vertical direction; the lower guide group 400 is fixed as a whole 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 invention, it is possible to simultaneously refer to Figure 4 The upper guide group 300 may include an upper circular plate 5, a lower disc 7, a lower cylinder 8, an adjustable gasket 9 and an inclined gasket 10, etc., wherein the upper circular plate 5 is welded to 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 adjustable gasket 9 and the inclined gasket 10 are arranged in sequence at the bottom of the lower cylinder 8, and the adjustable gasket 9 can be increased or decreased according to the height requirements. The inclined gasket 10 preferably adopts a 10° inclined pad and abuts against the square pull pin group 700, so as to decompose the vertical pressure into a horizontal thrust when unlocking, thereby achieving the effect of increasing the unlocking pulling force.

[0049] According to another preferred embodiment of the present invention, it is possible to refer to Figure 5 The lower guide group 400 preferably includes a buffer rubber ring 11, a lower guide circular plate 12, a guide cylinder 15 and a lower guide plate 16, wherein the lower guide circular plate 12 is welded to the lower guide plate 16 along the vertical direction through the guide sleeve 15, and a plurality of small reinforcing ribs 13 and a large reinforcing rib 14 are arranged between the lower guide circular plate 12 and the lower guide plate 16; in addition, the buffer rubber ring 11 is vertically arranged on the upper part of the lower guide circular plate 12 to fit the lower end of the upper guide group 300; the lower guide plate 16 is preferably also detachably mounted with a lower copper plate 17, so as to facilitate multiple uses.

[0050] The square pin assembly 700 is arranged at the lower side of the upper guide assembly 300 and contacts the lower end of the upper guide assembly 300; the oil cylinder assembly 800 is arranged on the base assembly 900 and connected to the square pin assembly 700 through a split pin, and is used to drive the square pin assembly 700 to be separated from the upper guide assembly 300 under the drive of an external high-pressure gas source, thereby completing the unlocking action. The oil cylinder assembly 700 is connected to the base assembly 900, for example, by bolts, and is connected to the square pin assembly 700 by a split pin, and is connected to the pump station for driving through a high-pressure oil pipe.

[0051] More specifically, according to a preferred embodiment of the present invention, it is possible to simultaneously refer to Figure 7 The square pull pin group 700 preferably includes a square pull pin upper copper plate 21, a square pull pin upper panel 22, a square pull pin body 23 and a square pull pin lower panel 24, wherein the square pull pin upper panel 22 and the square pull pin lower panel 24 are respectively arranged on the upper and lower sides of the square pull pin body 23, and the square pull pin upper copper plate 21 continues to be arranged on the upper side of the square pull pin upper panel 22; in addition, the square pull pin upper panel 22 and the square pull pin upper copper plate 21 both have the same inclination angle relative to the horizontal plane, and maintain mutual complementation with the inclined gasket 10 of the upper guide group 300.

[0052] More specifically, according to a preferred embodiment of the present invention, it is possible to simultaneously refer to Figure 8 The cylinder group 800 preferably includes a front support seat 25, a cylinder 26, a rear support seat 27 and a steering plate 28, wherein the cylinder 26 is horizontally arranged above the front support seat 25 and the rear support seat 27, and the thrust of the cylinder is converted into a pulling force on the square pull pin group 700 through the steering plate 28, thereby unlocking it.

[0053] As for the load sensor group 600, it is arranged on the base group 900, and is used to measure the impact force of the tested braking device 500 during impact braking; in addition, 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 of the tested braking device 500 during impact braking.

[0054] More specifically, according to a preferred embodiment of the present invention, it is possible to simultaneously refer to Figure 6 The load sensor group 600 preferably includes an upper circular threaded plate 18, a load sensor 19 and a lower plate 20, wherein the lower circular threaded plate 18 is connected to the load sensor 19 through threads and then installed on the lower plate 20 together through bolts; in addition, the bottom surface of the lower circular threaded plate 18 maintains contact with the upper force test surface of the load sensor 19, in this way, the impact force from the tested braking device 500 is transmitted to the load sensor 19 through the upper circular threaded plate 18.

[0055] More specifically, according to a preferred embodiment of the present invention, it is possible to simultaneously refer to Fig. 9 The speed measuring device group 1100 preferably includes 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 31 are respectively connected to the triangular connecting plate 30 and the triangular speed measuring plate 32 by bolts, the triangular speed measuring plate 32 is arranged horizontally and is vertically connected to the scale speed measuring rod 33 by bolts at the end; the triangular speed measuring plate is bolted to the scale speed measuring rod, and a yellow scale is bonded to it for reference in high-speed photography speed calculation. The optical testing device group 1000 is used to take an image of the scale speed measuring rod 33 and calculate and obtain data on the impact braking speed accordingly.

[0056] The base assembly 900 is welded together by a plurality of channel steels, square tubes, T-shaped base plates, square base plates, rectangular base plates, and reinforcing ribs, and is shaped like an inverted letter T. In addition, the base assembly 900 and the optical testing device assembly 1000 can be fixedly connected to the ground, for example, by chemical bolts, and they maintain a safe distance (e.g., about 2 meters) from each other.

[0057] Before the test, the cylinder group is connected to the base group, for example, by bolts, and to the square pin group by a cotter pin, the load sensor group is connected to the base group, for example, by bolts, the tested braking device is connected to the cylinder group, for example, by bolts, the upper guide group is placed directly above the square pin group, the test base support is placed directly on the upper guide group, and the cylinder group is connected to the load sensor group by bolts.

[0058] During the test, the pressure storage chamber is inflated through the inflation port. When the required pressure is reached, the cylinder group is driven to work through the pump station. The cylinder group drives the square pull pin group to unlock, and the upper guide group falls under the action of pressure. The test bottom support hits the tested brake device under the push of pressure to complete the test.

[0059] Through the above design, since the upper guide group and the lower guide group are clearance fit, grease can be applied between the upper guide group and the lower guide group to reduce friction during the test. The test base group and the cylinder group are clearance fit gaps, which can control the gap to ensure the airtight effect, increase the guiding ability, reduce the risk of jamming, and have good guiding and centering performance. The constraint form is similar to the actual constraint state.

[0060] The test equipment of the present invention mostly utilizes profiles, such as square tubes, steel tubes, channel steels, etc., and has a simple structure, fewer parts, and a low cost, which can greatly reduce test costs and verification costs. For example, the 10° inclined pad of the upper guide group, the lower copper plate of the lower guide group, and the upper panel of the square pull pin are all designed with replaceable wearing parts, which are easy to install and disassemble, and have high test efficiency. The upper guide group adopts a height-adjustable structural design to meet the boundary conditions of various test conditions, greatly saving test costs.

[0061] The test equipment of the present invention can use the same test base support group as the product when colliding with the brake device under test. During the test, not only the buffering and energy absorption of the brake device can be verified, but also the structural strength of the base support group and the product reliability can be verified. The degree of damage and the structural integrity of the base support after the impact can be clearly observed, thereby improving the product reliability and verifying the brake 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 invention will be described in detail below.

[0063] The test equipment of the present invention is mainly used to simulate the impact of hundreds of tons. It is necessary to generate MPa-level air pressure and hundreds of tons of cylinder tension to verify the braking performance of the brake device evenly distributed and installed in the four quadrants of the cylinder. Specifically, it is to verify whether the four groups of buffer tubes can achieve the specific absorption energy, total absorption energy, deformation stability and other capabilities of the designed state. The test tooling has the characteristics of high impact accuracy, strong safety, high simulation degree, etc., and can safely and accurately complete the relevant performance tests of the brake device.

[0064] Accordingly, after the device is installed, perform the following operations in sequence;

[0065] 1. The test shall be conducted by qualified test personnel. During the test, no one is allowed to stand around the test tooling. The test personnel must wear a safety helmet, take other safety precautions, and set up on-site protection;

[0066] 2. After confirming that the camera function, oil cylinder and sensor are working properly, the relevant personnel shall evacuate;

[0067] 3. Before the test, the safety personnel must confirm the safety and protection conditions on site and clear out non-regular operators. The test can be carried out only after everything is confirmed;

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

[0069] 5. Start the pump station, the oil cylinder starts to pull the pin, all the square pins are pulled out, the unlocking action is completed, and the bottom bracket hits the brake device;

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

[0071] 7. After the bottom bracket hits the brake device, close the high-pressure gas cylinder, open the pressure relief pipeline to release air, and stop collecting after the pressure relief is completed;

[0072] 8. After the collection is completed, the test is considered to be over, and you can enter the test site;

[0073] 9. After entering the site, take photos and record the site and product conditions in a timely manner;

[0074] 10. Obey the command during the process and stop immediately in case of abnormal situation.

[0075] In summary, the test equipment according to the present invention not only utilizes air pressure to equalize the speed of the base support impacting the brake device, but also replaces the constraint and guidance of the base support when the product is used through the constraint and guidance of the upper and lower guide groups. Compared with the prior art, it can more accurately simulate and replace the actual working conditions, and the test base support is not easy to be eccentric; in addition, the test equipment is equipped with a load sensor group to measure the impact force of the impact brake, and at the same time measures the speed of the impact brake through optical testing equipment. Compared with the prior art, more comprehensive and accurate test results can be obtained, and data collection is safe and efficient. At the same time, the test base support and the tested brake device are easy to disassemble, and the test efficiency is higher. Therefore, it is particularly suitable for brake test applications above 100 tons under various complex working conditions, and has good practical value and application prospects.

[0076] It will be easily understood by those skilled in the art that the above description is only 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 in the protection scope of the present invention.

Claims

1. A high-pressure impact combined brake test equipment, characterized in that: The test equipment comprises a cylinder group (100), a test base group (200), an upper guide group (300), a lower guide group (400), a load sensor group (600), a square pin group (700), a cylinder group (800), a base group (900), an optical test device group (1000) and a speed measuring device group (1100), wherein: The cylinder group (100) is a hollow cylindrical structure, a plurality of tested braking devices (500) are arranged inside the cylinder group (100), and each of the tested braking devices (500) is located below the test base group (200); The test supporting assembly (200) is installed inside the cylinder assembly (100) with clearance fit and can move in the vertical direction along the guide rail. The test supporting assembly (200) is directly placed on the upper guide assembly (300) and is used to move downward and impact the tested brake device (500) after being unlocked. The upper end of the upper guide group (300) is used to support the test base support group (200), and the lower end thereof passes through the lower guide group (400) with clearance and can move in the vertical direction; the lower guide group (400) is fixed as a whole with the base group (900), and cooperates with the upper guide group (300) to constrain and guide the downward movement of the test base support group (200); The square pin group (700) is arranged on the lower side of the upper guide group (300) and contacts the lower end of the upper guide group (300); the oil cylinder group (800) is arranged on the base group (900) and connected to the square pin group (700) through a cotter pin, and is used to drive the square 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 is used to measure the impact force of the tested braking device (500) during impact braking; 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 of the tested braking device (500) during impact braking.

2. The high-pressure impact combined brake test equipment according to claim 1, characterized in that: The cylinder assembly (100) preferably comprises a cylinder cover (1), a cylinder (2) and a flange plate (4), wherein the cylinder (2) and the flange plate at the bottom are welded to form a whole, and then the cylinder cover (1) is connected and installed at the top with bolts; in addition, the guide rail for guiding the vertical movement of the test base assembly (200) is arranged on the inner side of the cylinder (2).

3. The high-pressure impact combined brake test equipment according to claim 1 or 2, characterized in that: As for the test base assembly (200), it is preferably made of the same material as the product to be tested, so that during the test, not only the buffering and energy absorption performance of the tested braking 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 equipment according to any one of claims 1 to 3, characterized in that: As for the upper guide group (300), it preferably includes an upper circular plate (5), a lower disc (7), a lower cylinder (8), an adjustable gasket (9) and an inclined gasket (10), wherein the upper circular plate (5) is welded to 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 base support group (200); the adjustable gasket (9) and the inclined gasket (10) are arranged at the bottom of the lower cylinder (8) in sequence, and the adjustable gasket (9) can be increased or decreased according to the height requirement, and the inclined gasket (10) is abutted against the square pull pin group (700) for decomposing the vertical pressure into a horizontal thrust when unlocking, thereby achieving the effect of increasing the unlocking pulling force.

5. The high-pressure impact combined brake test equipment according to any one of claims 1 to 4, characterized in that: As for the lower guide group (400), it preferably includes a buffer rubber ring (11), a lower guide circular plate (12), a guide cylinder (15) and a lower guide plate (16), wherein the lower guide circular plate (12) is welded to 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 buffer rubber ring (11) is vertically arranged on the upper part of the lower guide circular plate (12) for fitting the lower end of the upper guide group (300); and the lower guide plate (16) is preferably also detachably mounted with a lower copper plate (17), thereby facilitating multiple uses.

6. The high-pressure impact combined brake test equipment according to any one of claims 1 to 5, characterized in that: As for the load sensor group (600), it preferably includes an upper circular threaded plate (18), a load sensor (19) and a lower plate (20), wherein the lower circular threaded plate (18) is connected to the load sensor (19) through threads and then installed on the lower plate (20) together with bolts; in addition, the bottom surface of the lower circular threaded plate (18) maintains contact with the upper force test surface of the load sensor (19), in this way, the impact force from the tested braking device (500) is transmitted to the load sensor (19) through the upper circular threaded plate (18).

7. The high-pressure impact combined brake test equipment according to claim 4, characterized in that: For the square pull pin group (700), it preferably includes a square pull pin upper copper plate (21), a square pull pin upper panel (22), a square pull pin body (23) and a square pull pin lower panel (24), wherein the square pull pin upper panel (22) and the square pull pin lower panel (24) are respectively arranged on the upper and lower sides of the square pull pin body (23), and the square pull pin upper copper plate (21) continues to be arranged on the upper side of the square pull pin upper panel (22); in addition, the square pull pin upper panel (22) and the square pull pin upper copper plate (21) both have the same inclination angle relative to the horizontal plane, and maintain mutual complementation with the inclined gasket (10) of the upper guide group (300).

8. The high-pressure impact combined brake test equipment according to any one of claims 1 to 7, characterized in that: As for the cylinder group (800), it preferably includes a front support seat (25), a cylinder (26), a rear support seat (27) and a steering plate (28), wherein the cylinder (26) is horizontally arranged above the front support seat (25) and the rear support seat (27), and the thrust of the cylinder is converted into a pulling force on the square pull pin group (700) through the steering plate (28), thereby unlocking.

9. A high-pressure impact combined braking test method, characterized in that: The method is completed using the device described in any one of claims 1 to 8.

10. The high-pressure impact combined brake test method according to claim 9, characterized in that: In the above test method, the external high-pressure gas source connected to the cylinder group is preferably above the megapascal level, and the impact of the accompanying test base group is preferably above the hundred-ton level.

Images