CN115389231A - Braking performance of railway vehicle 1:1 inertia test stand - Google Patents
Braking performance of railway vehicle 1:1 inertia test stand Download PDFInfo
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- G—PHYSICS
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- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/28—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for testing brakes
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Abstract
The invention relates to a railway vehicle braking performance 1:1 inertia test bench, which overcomes the problem that the hand sample simulation test in the prior art can not meet the requirement of the terminal performance test. The invention can stably and accurately carry out the following steps on the braking performance of a brake pad, a brake shoe, a heavy-duty vehicle and a braking material under the heavy-load and high-speed braking state by 1:1 inertia test and test. The invention comprises an inertia shaft and inertia supporting shaft combination and separation device, a power device capable of automatically switching, a main shaft emergency braking device, a friction disc for test, a tool device of a friction wheel, a device for testing the performance of a brake pad and a brake material in a brake, and a vibration-proof device; the alternating current servo main motor or the auxiliary motor sequentially drives the coupler, the inertia shaft with the inertia flywheel and the inertia supporting shaft, the coupler, the inertia shaft with the inertia flywheel III, the coupler, the main shaft with the emergency braking device, the main shaft extending shaft with the friction disk for testing and the friction wheel tool device, and the auxiliary supporting shaft to rotate.
Description
The technical field is as follows:
the invention belongs to the technical field of brake performance test of a brake system of a high-speed and heavy-load railway vehicle, and relates to a railway vehicle brake performance testing method, which comprises the following steps: 1 inertia test stand, which is used for carrying out 1:1 test bench test rig.
Background art:
the rapid development of the high-speed rail vehicle industry in China has entered the world leading position, an integrated rail traffic device manufacturing system is formed in China, along with the rapid increase of urban traffic, the safe operation of vehicles is ensured, a higher admission threshold is provided for the brake system industry, strict requirements and quality test standard regulations are provided for components and materials of related brake systems, the components and materials with requirements on brake performance are required to be tested according to the standard regulations, the tests on the brake performance of the brake components, brake material institutes and production enterprises in the domestic rail vehicle industry at present are carried out by adopting a small sample testing machine and a scaling test bed, the performance test requirements are completed by relying on a small sample simulation test, and the brake pads and brake shoes of the high-speed rail vehicle brake in China comprehensively realize localization | with the international test standard requirements! And always insist on the quality control of safe running of brake pads and brake shoes! With the development of the rail industry, the field of research on material performance is wider, deeper and higher, scientific research and enterprise development have higher requirements, and brake materials, brake pads, brake shoes, brake drums and products with high speed, high temperature, heavy load and high performance requirements need more comprehensive, more accurate and more visual test data, so that the requirements of replacing traditional materials by new materials, the development requirements of high-end materials, high-end products and multifunctional composite products with the requirements of single composite material structure standardization and function integration are developed, and small sample simulation tests cannot meet the requirements of terminal performance tests. The technical standard of the brake performance test stipulates that the performance detection of the brake material and the product for the railway vehicle must be carried out in the following steps of 1:1, the train platform is detected to be qualified, and the product can be installed, permitted in production and required to meet the quality guarantee requirement of normal and safe running.
The invention content is as follows:
the invention aims to provide a rail vehicle braking performance 1: the inertia test bed solves the problems that the test bed only tests and tests a disc brake or only tests and tests a drum brake and the specificity of the test standard and a small sample simulation test in the prior art cannot meet the requirements of a terminal performance test. The invention can realize that the braking performance of a disc brake, a drum brake, a heavy-load brake drum, a brake pad brake and a braking material is stably and accurately carried out in a heavy-load and high-speed braking state by 1:1 inertia test and test.
In order to realize the purpose, the invention adopts the technical scheme that:
a rail vehicle braking performance 1:1 inertia test bench, its characterized in that: comprises an automatic combination and separation device of an inertia shaft and an inertia supporting shaft; the device comprises a power device, a main shaft emergency braking device, a tool device for testing, a device for testing the braking performance of an inner braking material of a brake, and a hanging device for replacing a test brake in different forms, wherein the power device is automatically switched; mounting and replacing a tool device of a friction disc, a friction wheel and a brake drum and an inertia test bed shockproof device; the alternating-current servo main motor or the auxiliary motor sequentially drives the coupler, the inertia shaft with the inertia flywheel and the inertia supporting shaft, the coupler, the inertia shaft with the inertia flywheel III, the coupler, the main shaft with the emergency braking device, the main shaft extending shaft with the friction disc for testing, the friction wheel and the brake drum tool and the auxiliary supporting shaft to rotate, and the braking performance test and the test of the braking material in the brake are completed.
The inertia shaft and the inertia supporting shaft are combined, and the separating device comprises a sliding base, a linear sliding rail, a sliding base, a first air cylinder, a second air cylinder, a first bearing, a second bearing, a first sliding sleeve and a first air cylinder which are fixed on the sliding base; the sliding end of the linear sliding rail is connected to the sliding base, and the fixed end of the linear sliding rail is installed on the sliding base; the end face of the sliding base is arranged on the inertia base, and a top shaft of the cylinder is fixed on the sliding base; a bearing I and a bearing II are fixed on the sliding base; the first cylinder body drives the sliding base to mesh the sliding sleeve with the first inertia supporting shaft through the first bearing and the second bearing along the linear sliding rail, so that the inertia shaft drives the first inertia supporting shaft to rotate together; the first cylinder body drives the sliding base to separate the sliding sleeve from the first inertia supporting shaft by the first bearing and the second bearing along the linear sliding rail; the second port B of the cylinder automatically vents air, the port A automatically exhausts air, the cylinder body drives the sliding base to mesh the second sliding sleeve with the second inertia supporting shaft through the third bearing and the fourth bearing along the linear sliding rail, and the inertia shaft drives the second inertia supporting shaft to rotate together; or the automatic ventilation port A of the cylinder II stops air supply automatically, and the cylinder body of the cylinder II drives the sliding base to separate the sliding sleeve II from the two teeth of the inertia supporting shaft along the linear sliding rail by the bearing III and the bearing IV.
The power switching device capable of automatically switching comprises an alternating current servo main motor, a speed reducer with a fixed speed ratio, an auxiliary motor, a chain wheel I, a chain wheel II, a chain, a static friction gear sleeve and a sliding sleeve III; the auxiliary motor is used after being matched and connected with the speed reducer, the air cylinder three B port is automatically ventilated, the air supply is automatically stopped at the A port, the air cylinder three cylinder body drives the sliding base to mesh the sliding sleeve three with the static friction gear sleeve teeth along the linear sliding rail through the bearing five and the bearing six, at the moment, the alternating current servo main motor which is sequentially connected with the inertia shaft and the inertia shaft with the main shaft automatically stops running and the auxiliary motor runs alone, and the chain wheel one, the chain wheel two and the chain drive the dynamic and static friction gear sleeve to drive the main shaft to run; the automatic ventilation port B of the port A of the cylinder III automatically stops air supply, the sliding base is carried by the cylinder III along the linear sliding rail, the bearing V and the bearing VI separate the sliding sleeve III from the static friction gear sleeve teeth, so that the static friction gear sleeve does not carry the main shaft to continue to operate, and the alternating current servo main motor which is sequentially connected with the inertia shaft and the inertia shaft with the main shaft operates independently.
The main shaft emergency braking device comprises a brake disc, a brake II and a brake base; the brake disc is installed on the main shaft, and the second brake is installed on the brake base.
The tooling device for the friction disc, the friction wheel and the brake drum for the test comprises a main shaft extension shaft, an expansion sleeve, an auxiliary supporting shaft, an auxiliary supporting seat, an auxiliary supporting base, a lead screw, a copper wire nut, a copper sleeve and a hand wheel; the main shaft extension shaft adopts an expansion sleeve to expand and install a friction disc and a friction wheel for testing or directly connect with a brake drum bolt; one end of the main shaft extension shaft is connected with the main shaft, the other end of the main shaft extension shaft is connected with the auxiliary supporting shaft, the auxiliary supporting shaft is arranged in the auxiliary supporting seat and supports the auxiliary supporting seat to operate by a bearing nine, and the auxiliary supporting seat is fastened on the auxiliary supporting base by a T-shaped bolt; the fastened T-shaped bolt and the fastening bolt of the auxiliary supporting shaft and the main shaft extension shaft can be disassembled and disassembled, the lead screw in the copper sleeve is driven to rotate by the rotating hand wheel, and the auxiliary supporting seat connected with the copper screw nut is driven to move forwards or backwards; and a neutral position is reserved between the auxiliary supporting shaft and the main shaft extending shaft.
The device for testing the braking performance of the braking material in the first brake comprises a hollow shaft, a seventh bearing, an eighth bearing, a main torsion bracket, an auxiliary torsion bracket, a tailstock, a twelfth bearing, a thirteenth bearing, a tail shaft, a sensor seat and a sensor, a sensor seat, a hanging beam, a brake base and a brake; a seventh bearing and an eighth bearing are arranged in the main shaft seat to support the hollow shaft, a tenth bearing and an eleventh bearing are arranged in the hollow shaft to support the main shaft to rotate, a main torsion bracket is arranged on the end face of the hollow shaft, and an auxiliary torsion bracket is arranged on a tail shaft supported by a twelfth bearing and a thirteenth bearing in the tailstock; the two long ends of the torsion beam are respectively connected with the torsion main bracket and the torsion auxiliary bracket and rotate around the tail shaft, the hollow shaft and the main shaft coaxially; one end of the other two ends of the torsion beam is connected with the sensor base, the sensor and the sensor base, the other end of the torsion beam is provided with a hanging beam, the hanging beam is connected with the brake base, and the brake is connected with the brake base.
The shock-proof device comprises a cylindrical spiral compression spring, a foundation top flat plate, a foundation bottom flat plate, a leveling bolt and a locking nut; the foundation bottom flat plate is arranged on the top surface of the equipment foundation, holes in the center of the foundation bottom flat plate penetrate through long foundation bolts preset by the foundation, holes in the centers of the other four circular grooves in the foundation bottom flat plate are aligned with and penetrate through short foundations preset by the foundation, and the holes are connected with leveling bolts of the short foundations; arranging the same cylindrical spiral compression springs in four circular grooves on each base bottom plate, placing a base top plate on the upper plane of the spring of each base bottom plate and penetrating through the long foundation bolt, and aligning and pasting the four circular grooves in each base top plate downwards with the corresponding spring planes; the ground foot hole on the equipment base aligns with long foundation bolt, and the processing face of equipment base laminates on basic roof plate.
Compared with the prior art, the invention has the following advantages and effects:
1. the braking performance of the railway vehicle of the invention is 1: the inertia test bed 1 is used for carrying energy allocation of brake assemblies of high-speed railway vehicles and heavy-duty vehicles, completing comprehensive testing of the braking performance of brake pads, brake shoes, brake drums and braking materials, and also testing the braking performance of various brake assemblies.
2. The invention solves the traditional mode that the inertia discs are manually disassembled and assembled and the fastening screws are manually replaced and hoisted in the inertia configuration process of the large-scale test bed, realizes the automatic switching device of the large-scale inertia flywheel through full-automatic control, and quickly and accurately switches the large-scale inertia flywheel along with the test scheme to achieve the optimal test efficiency through the automatic combination and separation switching mode of the inertia flywheel in the air pressure and hydraulic control test process.
3. The test bed solves the problem that the automatic switching inertia flywheel is stably arranged in the test, each inertia flywheel is provided with a set of independently supported structural device, the stable and accurate supporting requirement of the switched inertia flywheel in the test is met, and the running stability of the test bed is improved.
4. The test bed of the invention solves the problem that the automatic power switching device in the test comprises the servo main motor, the speed ratio reducer and the auxiliary motor for power conversion in the test, does not need to be stopped for manual replacement, can conveniently start the menu of 'automatic power switching', can automatically adjust and switch the dynamic friction performance test and the static friction performance test, and is very convenient for test selection.
5. The invention solves the technical problem of the single caliper clamping test of the test bed, and solves the problems that 1: the test device has the advantages that 1, the test of multiple varieties of the test bed is realized, the mounting mode is inconsistent, the complete consistency of the mounting mode of the brake of the actual running vehicle is realized, and the technical problem of diversified tests of the inertia test bed is solved by the test device which can be mounted on the same test bed with the brake pad calipers, the brake shoe top calipers and the drum type expansion calipers of the actual railway vehicle. The test bed has multiple purposes, and the wide use value of the test bed is greatly improved.
6. The invention solves the adaptation test technology of replacing different types of brakes on the same test bed, adopts a hanging device, and carries out adjustment through a waist-shaped bar hole on a supporting beam and a T-shaped groove vertical to the waist-shaped bar hole on a torsion frame, and hoists the installation and replacement of the disc brake, the wheel brake, the drum type expanding clamp brake, the friction disc for test and the friction wheel for test on any position of an X axis and a Y axis of the same plane, thereby achieving the rapid and accurate test installation and greatly improving the convenience and reliability of replacing the test brake and the test tool.
7. The invention solves the problem that the test bed mounting foundation is in hard link with the ground and cannot eliminate the instability caused by the equipment operation vibration, the test bed adopts a damping spring frame mounting foundation form, simulates the mounting form of a railway train carriage and a bogie, and is combined with a foundation treatment form, so that a vibration source caused by high-speed and heavy-load braking of the test bed is isolated, and the test bed can stably operate in various test states.
8. The test bed solves the specificity problem of the traditional test using special model specifications and special standards, and the device of the test bed achieves the multi-element test functions; the test method comprises the following test functions of a brake performance test (international standard, national standard and industrial standard test), a simulation operation test, a brake working condition setting test, a vehicle type setting test and a research test. The test scheme can be designed for testing in the system energy coverage range of the test bed.
Description of the drawings:
fig. 1 shows the braking performance 1 of a rail vehicle: 1, an inertia test bed structure diagram;
FIG. 2 is a structural view of an automatic switching apparatus for coupling/decoupling an inertia wheel;
FIG. 3 is a structural view of the friction/wheel test rig mechanism;
FIG. 4 is a view of the friction disc and brake pad mounting mechanism;
FIG. 5 is a view of the friction wheel and brake shoe mounting mechanism;
FIG. 6 is a structural diagram of the whole anti-vibration device of the test bench.
The specific implementation mode is as follows:
in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention relates to a railway vehicle braking performance 1: the inertia test bed 1 is a test device for testing the braking performance of a disc brake, a drum brake, a heavy-duty brake drum, a brake pad brake, a braking material and a braking material of a brake of a high-speed heavy-duty rail vehicle and a heavy-duty vehicle. Comprises the following steps of; the test functions of a braking performance test, a simulation operation test, a test for setting braking working condition conditions, a test for setting vehicle type, a research test and the like. The main machine body of the rack is arranged on a foundation 99 of the shockproof device, and the main motor 43 drives the main shaft 40 to rotate to reach the speed required by test braking; inertia required by the test is achieved by the combination of the inertia shaft 42 and the inertia supporting shaft and the automatic switching of a separating mechanism. During testing, the alternating current servo main motor 43 sequentially drives the coupler 2, the inertia shaft with the inertia flywheel and the inertia supporting shaft, the coupler 8, the inertia shaft 11 with the inertia flywheel, the coupler 15, the main shaft 40 with the emergency braking device, the friction disc 103 for testing, the friction wheel 104, the main shaft extending shaft 106 of the brake drum 25 tool and the auxiliary supporting shaft 38 to rotate; during static friction test, the auxiliary motor 12 drives the auxiliary motor to rotate, air pressure is loaded in the cylinder of the brake 24 to drive the brake pad, or the brake shoe, or the brake drum to clamp and brake with the friction disc 103, the friction wheel 104 or the brake drum 25, and the brake performance test of the brake pad, the brake shoe and the brake drum of the brake is completed, and the test functions comprise: the method comprises the following steps of brake performance test, research test, simulation operation test, brake working condition setting test and vehicle type setting test. The test device can perform inertia simulation test under full-automatic control, can also perform test of manual control setting scheme, can perform continuous test and cyclic test, and can also perform test of instantaneous, time-limited, intermittent and boundary timing.
The test subjects included: the performance test of brake pads, brake shoes, brake drums, powder metallurgy materials, carbon/carbon materials, carbon/ceramic materials, various high-performance and composite materials and various high-end novel brake materials of the brakes of rail vehicles and heavy-duty vehicles.
The invention is described in further detail below with reference to the accompanying drawings:
the invention relates to a rail vehicle 1:1 brake material performance test bench. The composition comprises: the inertia shaft 42 is combined with the inertia supporting shaft I47 and the inertia supporting shaft II 54, and is a separating device, an automatic switching power device 14, a main shaft 40 emergency braking device, a friction disc 103 for test, a tool device 39 of a friction wheel 104 or a brake drum 25, a testing device for testing the performance of brake pads, brake shoes, brake drums and brake materials in the brake, and a shock-proof device of a test bench. The alternating current servo main motor 43 is sequentially provided with a coupler 2, an inertia shaft 42 with an inertia flywheel I4, a flywheel II 6, an inertia supporting shaft I47 and an inertia supporting shaft II 54, a coupler 8, an inertia shaft 41 with an inertia flywheel III 11, a coupler 15, a main shaft 40 with an emergency braking device, a main shaft extension shaft 106 with a test friction disc 103, a friction wheel 104 or a brake drum 25 tool, and an auxiliary supporting shaft 38 or an auxiliary motor 12 for rotating, so that the device for testing the brake pad, the brake shoe, the brake drum and the brake material in the brake 24 is completed, and the test of the brake performance of the brake pad, the brake shoe, the brake drum and the brake material of 1:1 brake are completed.
The inertia shaft 42 is combined with the first inertia supporting shaft 47 and the second inertia supporting shaft 54, and is separated from the first inertia supporting shaft 47 and the second inertia supporting shaft 54, and the single set of the inertia shaft is provided with: the sliding device comprises a sliding base 69, a linear sliding rail 68, a sliding base 65, a first air cylinder 66, a second air cylinder 61, a first bearing 70, a second bearing 64 and a sliding sleeve 3. The first air cylinder 66 is fixed on the sliding base 65; the sliding end of the linear slide rail 68 is connected to the sliding base 65, and the fixed end is mounted on the sliding base 69; the end face of the sliding base 69 is arranged on the inertia base 5, and the top shaft of the cylinder I66 is fixed on the sliding base 69; the sliding base 65 is fixed with a first bearing 70 and a second bearing 64. The air is automatically ventilated through a first air cylinder 66B, the air is automatically exhausted through a port A, the first air cylinder 66 cylinder drives the sliding base 65 to mesh the sliding sleeve 3 with the first inertia supporting shaft 47 along a linear sliding rail 68 through a first bearing 70 and a second bearing 64, and the inertia shaft 42 drives the first inertia supporting shaft 47 to rotate together; the first cylinder 66 is automatically ventilated at the port A, the second cylinder is automatically exhausted at the port B, and the first cylinder 66 drives the sliding base 65 to separate the sliding sleeve 3 from the first inertia supporting shaft 47 along the linear sliding rail 68 by the first bearing 70 and the second bearing 64, so that the inertia shaft 42 does not drive the inertia supporting shaft 47 to rotate continuously. Therefore, the inertia shaft 42 and the inertia supporting shaft I47 are automatically combined and separated. During the period, the second cylinder 61 and the port B can be independently or simultaneously controlled to automatically ventilate, the port A automatically exhausts, the cylinder body of the second cylinder 61 drives the sliding base 62 to engage the sliding sleeve 7 with the second inertia supporting shaft 54 along the linear sliding rail 60 by the third bearing 63 and the fourth bearing 58, so that the inertia shaft 42 drives the second inertia supporting shaft 54 to rotate together; or the air is automatically supplied to the port A of the second air cylinder 61, the air supply to the port B is automatically stopped, the cylinder body of the second air cylinder 61 drives the sliding base 62 to separate the sliding sleeve 7 from the teeth of the second inertia supporting shaft 54 along the linear sliding rail 60 by the third bearing 63 and the fourth bearing 58, and the inertia shaft 42 does not drive the second inertia supporting shaft 54 to continuously rotate. Thereby realizing one inertia shaft 42 and single or multiple inertia support shafts. The inertia supporting shaft I47 and the inertia supporting shaft II 54 are combined and separated freely and automatically, and simultaneously drive a plurality of inertia flywheels or a single inertia flywheel or a part of the inertia flywheels to rotate without influencing each other, so that inertia combination of more inertia flywheels is matched, and inertia configuration required by each test is completed.
The automatically switchable power switching device 14 is provided with: the device comprises an alternating current servo main motor 43, a speed reducer 13 with a fixed speed ratio, an auxiliary motor 12, a first chain wheel 18, a second chain wheel 20, a chain 19, a static friction gear sleeve 17 and a third sliding sleeve 16. The auxiliary motor 12 is used after being matched and connected with the speed reducer 13, the automatic ventilation port A of the port B of the air cylinder three 88 automatically stops air supply, the cylinder body of the air cylinder three 88 drives the sliding base 89 to be meshed with the sliding sleeve three 16 and the static friction gear sleeve 17 along the linear sliding rail 87 by the bearing five 85 and the bearing six 90, the alternating current servo main motor 43 which is sequentially connected with the inertia shaft 41 and the inertia shaft 42 with the main shaft 40 automatically stops running at the same time, the auxiliary motor 12 operates independently, and the chain wheel I18, the chain wheel II 20 and the chain 19 drive the static friction gear sleeve 17 to drive the main shaft 40 to run so as to provide power with ultra-low rotating speed and ultra-high torque for a test; the third cylinder 88A is automatically ventilated, the second cylinder is automatically stopped to supply air, the third cylinder 88 drives the sliding base 89 to separate the third sliding sleeve 16 from the static friction gear sleeve 17 along the linear sliding rail 87 by the fifth bearing 85 and the sixth bearing 90, so that the static friction gear sleeve 17 does not drive the main shaft 40 to continue to operate, and the alternating current servo main motor 43 which is sequentially connected with the inertia shaft 41 and the inertia shaft 42 with the main shaft 40 at the moment independently operates to provide high-rotation speed, low-torque or ultrahigh-torque ultralow-rotation speed or alternatively-set power for the test. The high and low rotating speeds are achieved when the requirement of the rail vehicle 1:1 brake performance test table test is met; high and low torque, ultrahigh torque, ultralow rotating speed and automatic switching of exchangeable setting power.
The main shaft 40 emergency braking device is provided with: brake disc 36, brake two 21, brake base 105. If the test bed needs to be stopped immediately or the test bed has power failure and power failure, the brake disc 36 on the main shaft 40 is clamped by the second brake 21 arranged on the brake base 105 immediately, so that the operation is stopped, the test bed can be operated again after the power is recovered, and the operation safety of the equipment is ensured.
The tooling device for the test friction disc 103, friction wheel 104 or brake drum 25 is provided with: the device comprises a main shaft extension shaft 106, an expansion sleeve 72, an auxiliary supporting shaft 38, an auxiliary supporting seat 30, an auxiliary supporting base 29, a lead screw 92, a copper wire nut 32, a copper sleeve 31 and a hand wheel 77. The brake drum 25 is directly arranged on the main shaft extension shaft 106 or the friction disc 103 and the friction wheel 104 for testing are arranged in an expanding way by using the expanding sleeve 72; the main shaft extension shaft 106 has one end connected to the main shaft 40 and the other end connected to the auxiliary support shaft 38, the auxiliary support shaft 38 is mounted in the auxiliary support base 30 and supported by the bearing nine 73, and the auxiliary support base 30 is fastened to the auxiliary support base 29 by a T-bolt. The fastened T-bolt and the fastening bolt of the auxiliary supporting shaft 38 connected with the main shaft extension shaft 106 can be disassembled and disassembled, the lead screw 92 in the copper sleeve 31 is driven to rotate by rotating the hand wheel 77, the auxiliary supporting seat 30 connected with the copper nut 32 is driven to move forwards or backwards, a neutral position is left between the auxiliary supporting shaft 38 and the main shaft extension shaft 106, and the main shaft extension shaft 106 can be disassembled and replaced from the neutral position. The large, small or light-weight and heavy friction disc 103, the friction wheel 104 or the brake drum 25 can be conveniently and quickly assembled and disassembled, the radial run-out and the axial run-out after the re-assembly meet the test requirements when large braking thrust or no load is loaded, and the influence of mechanical parts and system factors of equipment is avoided, so that the test data is more accurate and real.
A test device for testing performances such as brake lining, brake shoe, material in the stopper 24 is provided with: the brake comprises a hollow shaft 67, a bearing seven 79, a bearing eight 80, a torsion main bracket 71, a torsion auxiliary bracket 74, a tailstock 28, a bearing twelve 75, a bearing thirteen 76, a tail shaft 37, a sensor seat 35, a sensor 34, a sensor base 33, a hanging beam 27, a brake base 23 and a brake I24. The main shaft seat is internally provided with a bearing seven 79 and a bearing eight 80 to support the hollow shaft 67, the hollow shaft 67 is internally provided with a bearing ten 81 and a bearing eleven 78 to support the main shaft 40 to rotate, the end surface of the hollow shaft 67 is provided with a main torsion bracket 71, and a secondary torsion bracket 74 is arranged on a tail shaft 37 which is arranged in the tail seat 28 and supported by a bearing twelve 75 and a bearing thirteen 76. The two long ends of the torsion beam 26 are respectively connected with the main torsion bracket 71 and the auxiliary torsion bracket 74, and can rotate around the tail shaft 37, the hollow shaft 67 and the main shaft 40 coaxially. The main shaft 40 drives the friction disc 103, the friction wheel 104 or the brake drum 25 which is fixed by the main shaft 40 to normally operate, and simultaneously, the rotation of the main shaft 40 and the rotation of the hollow shaft 67 are not influenced mutually. One end of two short ends of the torsion beam 26 is connected with the sensor seat 35, the sensor 34 and the sensor base 33, the other end is provided with the hanging beam 27, the hanging beam 27 is connected with the brake base 23, and the brake 24 is connected with the brake base 23. When the first brake 24 brakes the friction disc 103, the friction wheel 104 or the brake drum 25, the torsion beam 26 flexibly rotates in a nearly static manner within a very small rotation angle to complete the braking action, and simultaneously, the sensor 34 is instantaneously driven to generate accurate dynamic data for the test, so that the test and the test data acquisition are completed.
The equipment shock mounting is provided with: a cylindrical helical compression spring 93, a foundation top flat plate 57, a foundation bottom flat plate 95, a leveling bolt 94 and a locking nut 56. The foundation bed plate 95 is placed on the top surface of the equipment foundation 98, the holes in the center of the foundation bed plate 95 penetrate through the long foundation bolts 97 preset on the foundation, and the holes in the centers of the other four circular grooves in the foundation bed plate 95 are aligned with and penetrate through the short foundation bolts 96 preset on the foundation to connect with the leveling bolts 94 of the short foundation bolts 96. After a plurality of base bottom plates 95 used by the equipment are aligned and leveled, each leveling bolt 94 is fastened, the same cylindrical spiral compression spring 93 is respectively placed in four circular grooves on each base bottom plate 95, a base top plate 57 is placed on the upper plane of the spring 93 of each base bottom plate 95 and penetrates through the long foundation bolt 97, and the four circular grooves in each base top plate 57 are downward aligned and closely attached to the corresponding plane of the spring 93. The ground foot hole 99 on the equipment base 44 is aligned with the long foundation bolt 97, the machining face of the equipment base 44 is attached to the basic top plate 57, complete level and coincidence between the equipment base 44 and the equipment base 45 plane are achieved by adjusting the locking nut 56 on the long foundation bolt 97, and damping acting force generated by shock waves generated when vibration is generated in the operation of the equipment is offset from damping acting force generated by the spring 93, so that the stable and smooth operation of the equipment in a heavy-load and high-speed state is achieved.
Carrying out the following steps of 1:1 during bench test, at first according to brake block, brake shoe, brake drum and the braking material of testing, use the actual working parameter in the operation motorcycle type and carry out 1:1, setting a braking speed and configuring inertia according to technical standards or specified conditions (design test scheme conditions) to be executed in a braking test, and entering a test procedure after braking pressure and braking initial temperature data.
During a dynamic friction test, the inertia shaft 42 is adjusted to be combined with and separated from the inertia supporting shaft I47 and the inertia supporting shaft II 54 to achieve a set test inertia value, the main motor 43 drives the inertia shaft 42 to rotate, the inertia flywheel I4 and the inertia flywheel II 6 are driven by the inertia supporting shaft I3, the inertia supporting shaft II 7, the inertia supporting shaft I47 and the inertia supporting shaft II 54 to rotate along with the inertia shaft 42, the inertia shaft 42 is further sequentially connected with the inertia shaft 41 to drive the inertia flywheel III 11 to rotate, and the inertia shaft is transmitted to the main shaft 40 to drive the main shaft extending shaft 106 to rotate together with the brake friction disc 103, the friction wheel 104 or the brake drum 25.
When the rotating speed set by the test is reached, the test pressure set before the test is automatically loaded and applied to the cylinder of the brake 24 to drive the brake pad to generate braking force, so that a braking test (braking) is completed. The braking force generated in the period drives the torsion beam 26 of the hoisting brake at one side to rotate through the hollow shaft 67, and the sensor 34 arranged at the other side automatically generates all braking performance test data and test process curve graphs generated in the whole braking test process, and the test data and test curve graphs at any moment in real time in the whole braking process.
During static friction test, test pressure set before loading test is applied to a cylinder of a brake 24 to drive a brake pad to generate a designated acting force, so that the friction disc 103, the friction wheel 104 or the brake drum 25 and the brake 24 are immediately braked, at the moment, a power source of the test is automatically switched to the auxiliary motor 12, the braked friction disc 103, the friction wheel 104 or the brake drum 25 and brake materials (brake pads and brake shoes) in the brake 24 are dragged to slip through a chain wheel I18, a chain wheel II 20, a chain 19, a static friction gear sleeve 17 and a sliding sleeve III 16 to drive a main shaft and a main shaft extension shaft 106 in sequence, and during the period, a sensor 34 arranged on the other side automatically generates a real-time test data and a test process curve chart required by the static friction test when the acting force generated in the process that the friction disc 103, the friction wheel 104 or the brake drum 25 is static to be about to slip drives a torsion beam 26 hoisting the brake 24 on one side of the hollow shaft 67 to rotate.
Test example 1:
when the inertia test of the brake performance 1:1 is carried out, inertia, rotating speed and pressure test parameters need to be set according to the following setting basis: (taking brake pad as an example)
1. Selecting various relevant technical requirements of industry standards, national standards and international standards (TJ/CL 307-2014, TB/T3118-2005, TB/T3104.1-2020 and UIC 541-3) of test execution, namely determining test standards and determining test parameters; the brake initiation temperature is generally set at 50 DEG C
2. Selecting the parameters of the brake pad working vehicle type for testing:
2.1, selecting a working vehicle type: CHR1
2.2, vehicle type parameter information is as follows:
weighing: 5.7T
Area of the single-side friction plate: 400cm 2
Diameter of the wheel: 890mm
Friction radius: 305mm
The highest speed: 275km/h
Maximum braking thrust on both sides: 31KN
3. Determining test parameters; speed, inertia, pressure of 1:1 test:
3.1, a main shaft rotating speed calculation formula:
wherein: v-test vehicle speed (km/h)
R-radius of wheel (m)
1:1 test speed: n0=2.65 × 275/0.445 2 ≈1638r/min
3.2, preparing an inertia calculation formula: i = GR 2
Wherein: g-axle weight (kg)
R-radius of wheel (m)
1:1 test inertia: i0=5700 × 0.445 2 ≈1128.74kgm 2
3.3, a pressure calculation formula:
P＝G
wherein: f-for braking thrust (KN)
S-is total area of friction plate
1:1 test pressure: p0=31000/800=38.75n/cm 2
Test example 2:
1. selecting various related technical requirements of industry standards, national standards and international standards (TJ/CL 307-2014, TB/T3118-2005, TB/T3104.1-2020 and UIC 541-3) for test execution, and determining test standards and test parameters;
2. selecting the parameters of the brake pad working vehicle type for testing:
2.1, selecting a working vehicle type: CHR2A (M)
2.2, vehicle type parameter information is as follows:
weighing: 8.15T
Area of the single-side friction plate: 350cm 2
Diameter of the wheel: 860mm
Friction radius: 297.6mm
The highest speed: 271km/h
Bilateral maximum braking thrust: 56.54K
3. Determining the rotating speed, inertia and pressure of the test parameter 1:1: (calculation formula: omitted.)
1:1 test speed: n0=2.65 × 271/0.43 ≈ 1670r/min
1:1 test inertia: i0=8150 × 0.43 2 ≈1506.94kgm 2
1:1 test pressure: p0=56540/700 ≈ 80.77N/cm 2
Test example 3:
1. selecting various related technical requirements of industry standards, national standards and international standards (TJ/CL 307-2014, TB/T3118-2005, TB/T3104.1-2020 and UIC 541-3) for test execution, and determining test standards and test parameters;
2. selecting the parameters of the brake pad working vehicle type for testing:
2.1, selecting a working vehicle type: CHR2C (1) (M)
2.2, vehicle type parameter information is as follows:
weighing: 7.5T
Area of the single-side friction plate: 350cm 2
Diameter of the wheel: 860mm
Friction radius: 297.6mm
The highest speed per hour: 350km/h
Maximum braking thrust on both sides: 69.28KN
3. Determining the test parameters of the rotating speed, inertia and pressure of the 1:1 test: (calculation formula: omitted.)
1:1 test inertia: i0=7500 × 0.43 2 ≈1386.75kgm 2
1:1 test speed: n0=2.65 × 350/0.43 ≈ 2157r/min
1:1 test pressure: p0=69280/700 ≈ 98.97N/cm 2
Test example 4:
1. selecting various related technical requirements of industry standards, national standards and international standards (TJ/CL 307-2014TB/T3118-2005, TB/T3104.1-2020 and UIC 541-3) of test execution, and determining test standards and test parameters;
2. selecting the parameters of the brake pad working vehicle type for testing:
2.1, selecting a working vehicle type: CHR2C (2), CHR3
2.2, vehicle type parameter information is as follows:
weighing: 5.7T
Area of the single-side friction plate: 400cm 2
Diameter of the wheel: 920mm in diameter
Friction radius: 305mm
The highest speed: 380km/h
Maximum braking thrust on both sides: 45KN
3. Determining test parameters: speed, inertia and pressure for 1:1 test: (calculation formula: abbreviated) 1:1 test inertia: i0=5700 × 0.46 2 ≈1206.12kgm 2
1:1 test speed: n0=2.65 × 380/0.46 ≈ 2189r/min
1:1 test pressure: p0=45000/800 ≈ 56.25N/cm 2
Test example 5:
1. selecting various related technical requirements of industry standards, national standards and international standards (TJ/CL 307-2014, TB/T3118-2005, TB/T3104.1-2020 and UIC 541-3) for test execution, and determining test standards and test parameters;
2. selecting the parameters of the brake pad working vehicle type for testing:
2.1, selecting a working vehicle type: CHR5A
2.2, vehicle type parameter information is as follows:
weighing: 5.7T
Area of the single-side friction plate: 400cm 2
Diameter of the wheel: 890mm
Friction radius: 247mm
The highest speed: 375km/h
Bilateral maximum braking thrust: 31KN
3. Determining the test parameters of the rotating speed, inertia and pressure of the 1:1 test: (calculation formula: omitted.)
1:1 test inertia: i0=5700 × 0.445 2 ≈1128.74kgm 2
1:1 test speed: n0=2.65 × 375/0.445 ≈ 2233r/min
1:1 test pressure: p0=31000/800 ≈ 38.75N/cm 2
Test example 6:
1. selecting various related technical requirements of industry standards, national standards and international standards (TJ/CL 307-2014, TB/T3118-2005, TB/T3104.1-2020 and UIC 541-3) for test execution, and determining test standards and test parameters;
2. selecting the parameters of the brake shoe working vehicle to be tested:
2.1, selecting a working vehicle type: 26T heavy-duty truck
2.2, vehicle type parameter information is as follows:
weighing: 26T
Area of single-side friction shoe: 275cm 2
Diameter of the wheel: 840mm
Friction radius: 420mm
The highest speed: 200km/h
Maximum braking thrust on both sides: 30KN
3. Determining the test parameters of the rotating speed, inertia and pressure of the 1:1 test: (calculation formula: omitted.)
1:1 inertia: i0=26800 × 0.42 2 ≈4727.52kgm 2
1:1 speed: n0=2.65 × 200/0.42 ≈ 1262r/min
1:1 pressure: p0=30000/275 ≈ 109N/cm 2
Test example 7:
1. selecting the industry standard, the national standard and the international standard (TJ/CL 307-2014),
TB/T3118-2005, TB/T3104.1-2020, UIC 541-3) and determining test standards and test parameters;
2. selecting the parameters of the brake shoe working vehicle to be tested:
2.1, selecting a working vehicle type: 26T heavy-duty truck
2.2, vehicle type parameter information is as follows:
axle weight: 25T
Area of the single-side friction shoe: 275cm 2
Diameter of the wheel: 1250mm
Friction radius: 625mm
The highest speed: 200km/h
Maximum braking thrust on both sides: 30KN
3. Determining the test parameters of the rotating speed, inertia and pressure of the 1:1 test: (calculation formula: omitted.)
1:1 inertia: i0=25000/2 × 0.625 2 ≈4882.82kgm 2
1:1 speed: n0=2.65 × 200/0.625 ≈ 848r/min
1:1 pressure: p0=30000/275 ≈ 109N/cm 2
Test example 8:
1. selecting various related technical requirements of industry standards, national standards and international standards (TJ/CL 307-2014TB/T3118-2005, TB/T3104.1-2020 and UIC 541-3) of test execution, and determining test standards and test parameters;
2. selecting the parameters of the brake shoe working vehicle type to be tested:
2.1, selecting a working vehicle type: 12.5T truck
2.2, vehicle type parameter information is as follows:
wheel weight: 12.5T
Area of the single-side friction shoe: 310cm2
Diameter of the wheel: 1050mm
Friction radius: 525mm
The highest speed: 120km/h
Maximum braking thrust on both sides: 80KN
3. Determining the rotating speed, inertia and pressure of a test parameter 1:1: (calculation formula: omitted.)
1:1 inertia: i0=12500 × 0.525 2 ≈3445.31kgm 2
1:1 speed: n0=2.65 × 120/0.525 ≈ 607r/min
1:1 pressure: p0=80000/310 ≈ 258.06N/cm 2
Comprehensively calculating and designing according to the models of domestic and foreign rail vehicles and the technical parameters of the brake performance of brake pads, brake shoes and brake drums at the present stage;
1. the running speed of the existing railway vehicle is as follows; 2300rpm
Braking performance of railway vehicle 1:1, the running speed of the inertia test bed reaches; 3000rpm
2. The highest linear speed of the existing railway vehicle is; 380km/h
Braking performance of railway vehicle 1:1, the linear velocity of an inertia test bed is reached; 450km/h
3. Maximum inertia configuration of the active rail vehicle; 4882kgm 2
Braking performance of railway vehicle 1:1, inertia configuration of an inertia test bed is achieved; 5000kgm 2
4. The maximum thrust of the existing railway vehicle is; 100KN
Braking performance of railway vehicle 1:1, the thrust of the inertia test bed is reached; 110KN
5. The maximum wheel diameter of the current rail vehicle is; phi 1250mm;
braking performance of railway vehicle 1:1, the diameter of the wheel of the inertia test bed is up to; phi 1400mm;
6. the maximum axle weight of the existing railway vehicle is; 40T
Braking performance of railway vehicle 1:1 the axle weight of an inertia test bed is as follows; 45T
In conclusion; inventive rail vehicle braking performance 1:1 the inertia test bed has the following technical performance indexes:
1) And system power: 700KW
2) And the total weight is as follows: about 90T
3) And carrying energy: 70MJ
4) And linear velocity: 450km/h
5) And inertia configuration: 5000kgm 2
6) And main shaft rotating speed: 3000rpm
7) Braking thrust: 110KN
8) And braking torque: 30KNm
9) Maximum rotating body diameter: phi 1400mm;
10 Maximum bearing axle weight: 45T, and (2);
inventive rail vehicle braking performance 1:1 inertia test stand, which sets the braking performance 1 of the railway vehicle according to the energy, linear speed, main shaft rotating speed, braking thrust, braking torque, maximum rotating body diameter, maximum shaft weight, maximum inertia configuration and related highest technical indexes borne by the brake assembly of the high-speed railway vehicle and the heavy-duty vehicle at the present stage: 1 technical performance index that the inertia test bed should possess, the test bed of the invention is that the first full-functional high test index configuration in China carries out full-automatic test to the brake performance of stopper brake block, brake shoe, brake drum and braking material at present 1:1 inertia test bench, can also test rail vehicle, heavy vehicle brake assembly's braking performance.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.
Claims (7)
1. A rail vehicle braking performance 1:1 inertia test bench, its characterized in that: comprises an inertia shaft (42) and an inertia supporting shaft automatic combination and separation device; the device comprises a power device (14) capable of automatically switching, a main shaft emergency braking device (22), a tooling device (23) for testing, a device for testing the braking performance of a braking material in a first brake (24), and a hanging device (26) for replacing the first test brake (24) in different forms; a tool device (39) for installing and replacing the friction disc (103), the friction wheel (104) and the brake drum (25), and an inertia test bed shockproof device (99); the alternating current servo main motor (43) or the auxiliary motor (12) sequentially drives the coupler (2), the inertia shaft (42) with the inertia flywheel and the inertia supporting shaft, the coupler (8), the inertia shaft (41) with the inertia flywheel III (11), the coupler (15), the main shaft (40) with the emergency braking device, the main shaft extending shaft (106) with the test friction disc (103), the friction wheel (104) and the brake drum (25) tool, and the auxiliary supporting shaft (38) to rotate, so that the brake performance test and the test of the brake material in the brake (24) are completed.
2. Railway vehicle braking performance 1 according to claim 1:1 inertia test bench, its characterized in that: the inertia shaft (42) and the inertia supporting shaft (47) are combined, and the separating device comprises a sliding base (69), a linear sliding rail (68), a sliding base (65), a first cylinder (66), a second cylinder (61), a first bearing (70), a second bearing (64), a first sliding sleeve (3) and a first cylinder (66) which are fixed on the sliding base (65); the sliding end of the linear sliding rail (68) is connected to the sliding base (65), and the fixed end is installed on the sliding base (69); the end face of a sliding base (69) is installed on the inertia base (5), and the top shaft of a cylinder I (66) is fixed on the sliding base (69); a first bearing (70) and a second bearing (64) are fixed on the sliding base (65); automatic ventilation is carried out through a first cylinder (66) and a second cylinder, and automatic exhaust is carried out through a port A, the first cylinder (66) drives a sliding base (65) to engage a sliding sleeve (3) with a first inertia supporting shaft (47) through a first bearing (70) and a second bearing (64) along a linear sliding rail (68), so that an inertia shaft (42) drives the first inertia supporting shaft (47) to rotate together; the automatic ventilation of the port A of the cylinder I (66) and the automatic exhaust of the port B of the cylinder I, the cylinder body of the cylinder I (66) drives the sliding base (65) to separate the teeth of the sliding sleeve (3) and the teeth of the inertia supporting shaft I (47) along the linear sliding rail (68) by the bearing I (70) and the bearing II (64); the port B of the cylinder II (61) is automatically ventilated, the port A is automatically exhausted, the cylinder body drives the sliding base (62) to engage the sliding sleeve II (7) with the inertia supporting shaft II (54) along the linear sliding rail (60) through the bearing III (63) and the bearing IV (58) in a tooth meshing manner, and the inertia shaft (42) drives the inertia supporting shaft II (54) to rotate together; or the air supply of the air cylinder II (61) is automatically stopped at the A port and the air supply of the B port, and the cylinder body of the air cylinder II (61) drives the sliding base (62) to separate the sliding sleeve II (7) from the teeth of the inertia supporting shaft II (54) along the linear sliding rail (60) by the bearing III (63) and the bearing IV (58).
3. Railway vehicle braking performance 1 according to claim 1 or 2: 1 inertia test bench, its characterized in that: the power switching device (14) capable of automatically switching comprises an alternating current servo main motor (43), a speed reducer (13) with a fixed speed ratio, an auxiliary motor (12), a chain wheel I (18), a chain wheel II (20), a chain (19), a static friction gear sleeve (17) and a sliding sleeve III (16); the auxiliary motor (12) is matched and connected with the speed reducer (13) and then assembled for use, an air inlet A of an air cylinder III (88) is automatically ventilated, air supply is automatically stopped, a sliding base (89) is driven by a cylinder body of the air cylinder III (88) to be meshed with a sliding sleeve III (16) and a static friction gear sleeve (17) along a linear sliding rail (87) through a bearing V (85) and a bearing VI (90), at the moment, an alternating current servo main motor (43) which is sequentially connected with an inertia shaft (41) and an inertia shaft (42) and a main shaft (40) is required to automatically stop running, the auxiliary motor (12) runs independently, and the static friction gear sleeve (17) is driven by a chain wheel I (18), a chain wheel II (20) and a chain (19) to drive the main shaft (40) to run; and an A port of the air cylinder III (88) automatically ventilates and a B port automatically stops air supply, a cylinder body of the air cylinder III (88) drives a sliding base (89) to separate a sliding sleeve III (16) from teeth of a static friction gear sleeve (17) along a linear sliding rail (87) by a bearing V (85) and a bearing VI (90), so that the static friction gear sleeve (17) does not drive the main shaft (40) to continue to operate, and an alternating current servo main motor (43) which is sequentially connected with the inertia shaft (41) and the inertia shaft (42) and the main shaft (40) independently operates.
4. Railway vehicle braking performance 1 according to claim 3: 1 inertia test bench, its characterized in that: the main shaft emergency braking device comprises a brake disc (36), a second brake (21) and a brake base (105); the brake disc (36) is installed on the main shaft (40), and the brake II (21) is installed on the brake base (105).
5. Railway vehicle braking performance 1 according to claim 4: 1 inertia test bench, its characterized in that: the tooling device (39) of the friction disc (103), the friction wheel (104) and the brake drum (25) for the test comprises a main shaft extension shaft (106), an expansion sleeve (72), an auxiliary supporting shaft (38), an auxiliary supporting seat (30), an auxiliary supporting base (29), a lead screw (92), a copper wire nut (32), a copper sleeve (31) and a hand wheel (77); the main shaft extension shaft (106) adopts an expansion sleeve (72) to expand and install a friction disc (103) and a friction wheel (104) for testing or directly connect with a brake drum (25) through bolts; one end of a main shaft extension shaft (106) is connected with the main shaft (40), the other end of the main shaft extension shaft is connected with an auxiliary supporting shaft (38), the auxiliary supporting shaft (38) is installed in an auxiliary supporting seat (30) and supported by a bearing nine (73) to operate, and the auxiliary supporting seat (30) is fastened on an auxiliary supporting base (29) by a T-shaped bolt; the fastened T-shaped bolt and the fastened fastening bolt of the auxiliary supporting shaft (38) and the main shaft extension shaft (106) can be disassembled and disassembled, the lead screw (92) in the copper sleeve (31) is driven to rotate by rotating the hand wheel (77), and the auxiliary supporting seat (30) connected with the copper nut (32) is driven to move forwards or backwards; a neutral position is left between the auxiliary support shaft (38) and the main shaft extension shaft (106).
6. Railway vehicle braking performance 1 according to claim 5: 1 inertia test bench, its characterized in that: the device for testing the braking performance of the braking material in the first brake (24) comprises a hollow shaft (67), a seventh bearing (79), an eighth bearing (80), a main torsion bracket (71), a secondary torsion bracket (74), a tailstock (28), a twelfth bearing (75), a thirteenth bearing (76), a tail shaft (37), a sensor seat (35), a sensor (34), a sensor seat (33), a hanging beam (27), a brake base (23) and the first brake (24); a bearing seven (79) and a bearing eight (80) are arranged in the main shaft seat to support the hollow shaft (67), a bearing ten (81) and a bearing eleven (78) are arranged in the hollow shaft (67) to support the main shaft (40) to rotate, a main torsion bracket (71) is arranged on the end surface of the hollow shaft (67), and a main torsion bracket (74) is arranged on a tail shaft (37) supported by a bearing twelve (75) and a bearing thirteen (76) in the tailstock (28); two long ends of the torsion beam (26) are respectively connected with the main torsion bracket (71) and the auxiliary torsion bracket (74) and rotate around the tail shaft (37), the hollow shaft (67) and the main shaft (40) coaxially; one end of the other two ends of the torsion beam (26) is connected with the sensor base (35), the sensor (34) and the sensor base (33), the other end is provided with a hanging beam (27), the hanging beam (27) is connected with the brake base (23), and the brake I (24) is connected with the brake base (23).
7. Railway vehicle braking performance 1 according to claim 6: 1 inertia test bench, its characterized in that: the shockproof device (99) comprises a cylindrical spiral compression spring (93), a foundation top plate (57), a foundation bottom plate (95), a leveling bolt (94) and a locking nut (56); a foundation bottom plate (95) is arranged on the top surface of an equipment foundation (98), a hole in the center of the foundation bottom plate (95) penetrates through a long foundation bolt (97) preset by the foundation, holes in the centers of the other four circular grooves in the foundation bottom plate (95) are aligned with and penetrate through short foundations (96) preset by the foundation, and a leveling bolt (94) connected with the short foundations (96) is arranged; the same cylindrical spiral compression springs (93) are respectively arranged in four circular grooves in each base bottom plate (95), a base top plate (57) is placed on the upper plane of the spring (93) of each base bottom plate (95) and penetrates through the long foundation bolt (97), and the four circular grooves in each base top plate (57) are downwards aligned with and attached to the corresponding spring (93) plane; the ground foot hole on the equipment base (44) is aligned with the long ground bolt (97), and the processing surface of the equipment base (44) is attached to the foundation top plate (57).
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| CN202210662735.5A CN115389231B (en) | 2022-06-13 | 2022-06-13 | Rail vehicle brake performance 1:1 inertia test stand |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116818566A (en) * | 2023-08-29 | 2023-09-29 | 无锡龙创汽车技术有限公司 | Torsion beam welding strength detection device |
| CN116893066A (en) * | 2023-09-11 | 2023-10-17 | 天润通成汽车技术服务(盐城)有限公司 | In-situ automobile brake detection device |
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| KR100791632B1 (en) * | 2006-07-18 | 2008-01-04 | 고려대학교 산학협력단 | Apparatus for testing performance of brake pad of car |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116818566A (en) * | 2023-08-29 | 2023-09-29 | 无锡龙创汽车技术有限公司 | Torsion beam welding strength detection device |
| CN116818566B (en) * | 2023-08-29 | 2023-11-14 | 无锡龙创汽车技术有限公司 | Torsion beam welding strength detection device |
| CN116893066A (en) * | 2023-09-11 | 2023-10-17 | 天润通成汽车技术服务(盐城)有限公司 | In-situ automobile brake detection device |
| CN116893066B (en) * | 2023-09-11 | 2024-02-06 | 天润通成汽车技术服务(盐城)有限公司 | In-situ automobile brake detection device |
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