CN106769102B - Device capable of continuously adjusting capacity and simulating load of automobile brake wheel cylinder - Google Patents
Device capable of continuously adjusting capacity and simulating load of automobile brake wheel cylinder Download PDFInfo
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- CN106769102B CN106769102B CN201710043573.6A CN201710043573A CN106769102B CN 106769102 B CN106769102 B CN 106769102B CN 201710043573 A CN201710043573 A CN 201710043573A CN 106769102 B CN106769102 B CN 106769102B
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
Abstract
The invention provides an automobile brake performance test load device with continuously adjustable containing cavity, which solves the problem that the existing automobile brake performance test platform needs to replace brakes with different specifications in the test process of different automobile types.
Description
Technical Field
The invention relates to a device for simulating a brake of a brake system, in particular to a device for simulating the load of a brake cylinder of an automobile, wherein a cavity is continuously adjustable.
Background
The automobile brake performance test bench is a common automobile test bench, wherein a brake load part of the brake performance test bench is generally composed of an actual automobile brake, and the principle is that a brake load is formed by building back pressure through a brake wheel cylinder in the brake. Research shows that in the braking process of an automobile, the size of a brake cylinder has great influence on the reaction time, the braking torque and the braking strength of a braking system, and meanwhile, the matching of the sizes of the brake cylinder and a brake master cylinder also has great influence on the braking performance, so that the response characteristics of the brake cylinders with different sizes and specifications on braking load are greatly influenced. However, because the brake wheel cylinders of different vehicle types have different volumes and the brake performances under the same working condition are different, when the performances of different vehicle types are tested, the bench needs to be replaced by the brake with the specification corresponding to the vehicle type, and a plurality of adverse factors exist in the construction cost, the space configuration, the installation and adjustment and the experimental operation of the test bench. In order to avoid the operation of replacing a brake, reduce the test cost and optimize the spatial configuration of a rack, the invention provides a simulated automobile brake cylinder load device with a continuously adjustable cavity.
Disclosure of Invention
The invention aims to solve the technical problem that the existing automobile brake performance test bed needs to replace brakes with different specifications in the process of testing different automobile types, and provides an automobile brake performance test load device with continuously adjustable accommodating cavity.
In order to solve the technical problems, the invention adopts the following specific technical scheme:
a simulation automobile brake wheel cylinder load device with a continuously adjustable containing cavity is characterized by comprising a bottom support, wherein a single-action hydraulic cylinder is fixedly installed at the front end of the bottom support through a vertical support, two linear slide rails are fixed at the middle part of the bottom support through a slide rail installation aluminum profile, a lead screw is arranged between the two linear slide rails, the lead screw is installed between the two linear slide rails through a front end bearing support, a rear end bearing support and a deep groove ball bearing in the two supports, the lead screw and the deep groove ball bearing are in interference fit, wherein, one end of the screw rod passes through the rear end bearing seat end cover of the rear end bearing seat, two linear sliding rails are respectively provided with a sliding block which can slide along the linear sliding rails, the sliding blocks at two sides are fixedly connected with a sliding block mounting platform, the upper surface of the sliding block mounting platform is fixedly provided with a fixed support, the front end of a piston rod of the hydraulic cylinder is connected with the top end of the fixed support by adopting a fastening nut, the sliding sleeve and the sliding sleeve mounting plate are positioned at the front end of the sliding block, the sliding sleeve is arranged and matched with the external thread of the screw rod by relying on the internal thread, the sliding sleeve can drive the sliding sleeve mounting plate and the sliding rail mounting platform to move when the screw rod rotates, the slide rail mounting platform drives the slide block to slide along a linear slide rail, one end of a lead screw, which penetrates through a rear end bearing support, is connected with an output shaft of a helical gear reducer fixed at the rear end of a bottom support through a coupler, the outside of the helical gear reducer is connected with a driving motor through a connecting shield, an input shaft inside the helical gear reducer is an output shaft of the driving motor, a displacement sensor measuring end fixed angle iron is fixedly mounted at the rear end of the slide block mounting platform, a pull wire type displacement sensor is fixedly mounted at the top of a rear end bearing support end cover, and pull wires of the pull wire type displacement sensor are arranged between the pull wire type displacement sensor and the displacement sensor measuring end fixed angle iron.
The further technical scheme comprises the following steps:
the fixed support and the sliding rail mounting platform are fixedly connected through a fastening screw, the sliding sleeve is connected with a sliding sleeve mounting plate through the fastening screw, and the sliding sleeve mounting plate is connected with the front end of the sliding block mounting platform through the fastening screw;
the screw rod is fixed in the center of the slide rail installation aluminum profile through the deep groove ball bearing, the front end bearing support, the rear end bearing support and the fastening screws, the front end bearing support and the rear end bearing support are fixed at the front end and the rear end of the slide rail installation aluminum profile through the fastening screws, and the deep groove ball bearing is in interference fit with the rear end bearing support and the front end bearing support;
the linear slide rail is installed at the track plane of slide rail installation aluminium alloy both sides upper surface, and linear slide rail one end is supported and is leaned on front end bearing support rear surface, and the through-hole of the other end through fastening bolt insertion casting right angle seat bottom with install the slider nut fixed connection in track plane inside, the one end that supports and leans on linear slide rail is supported to casting right angle seat front end surface, together with front end bearing support with linear slide rail fixed.
Skewed tooth gear reducer fix the rear end at the bottom support through a reduction gear mounting panel, the reduction gear mounting panel be a long 190mm, wide for 150mm, thick 5 mm's steel sheet, four angle departments of reduction gear mounting panel are provided with the screw hole that the diameter is 6mm, be provided with four diameters in the middle of the reduction gear mounting panel and be 5 mm's through-hole, corresponding with skewed tooth gear reducer's base bottom mounting hole, the reduction gear mounting panel is on a parallel with device bottom support, the reduction gear mounting panel passes the screw hole and slider nut and the bottom support fixed connection of four angle departments through fastening screw.
The input end of the screw rod is connected with the output end of the helical gear reducer through a coupler, the coupler adopts a plum blossom coupler, the coupler consists of two coupler convex claws and an elastic element, the two elastic convex claws are mutually meshed in the direction of the convex claws, the radial meshing gap position is filled with the plum blossom elastic element, one end of the screw rod and the coupler convex claws are fixedly connected with the input end of the screw rod through flat keys, and the convex claws at one end of the helical gear reducer are fixedly connected with the output shaft of the helical gear reducer through the flat keys.
Compared with the prior art, the invention has the advantages that:
1) The invention is driven by a motor, and drives a piston rod to move through a transmission mechanism so as to change the size of the cavity of the simulated brake wheel cylinder to simulate the volume of the brake wheel cylinder of different vehicle types, thereby achieving the purpose of simulating the loads of the brake wheel cylinders of different specifications;
2) The simulation brake wheel cylinder with continuously adjustable volume can simulate brakes with different volume specifications to simulate brake load, so that the brakes do not need to be frequently replaced when the brake performance of different vehicle types is tested; the bench test operation is facilitated to be simplified;
3) The simulation brake wheel cylinder with continuously adjustable volume can simulate brakes with different volume specifications to simulate brake load, and the cost of the test bench can be reduced without preparing the brakes with different specifications;
4) According to the advantages, the test bed does not need to be frequently replaced with brakes, so that space does not need to be reserved for replacing the brakes when the spatial arrangement of the test bed is planned, and the optimization of the arrangement of the test bed is facilitated;
drawings
The invention is described in detail below with reference to the accompanying drawings:
FIG. 1 is a schematic structural composition diagram of a device for simulating the load of a brake cylinder of an automobile, with a continuously adjustable cavity, according to the invention;
FIG. 2 is a structural assembly plan view of a simulated automobile brake cylinder load device with a continuously adjustable accommodating cavity according to the invention;
FIG. 3 is a schematic view of a single-acting hydraulic cylinder with a continuously adjustable cavity for simulating automobile brake cylinder load according to the present invention;
FIG. 4 is an installation schematic diagram of a driving motor, a helical gear reducer and a coupling of the device for simulating the load of the automobile brake cylinder, with a continuously adjustable accommodating cavity;
FIG. 5 is a schematic diagram of a transmission mechanism of a simulated automobile brake cylinder load device with a continuously adjustable cavity according to the invention;
FIG. 6 is a schematic diagram of a fixing mode of a fixing support of a simulated automobile brake cylinder load device with a continuously adjustable accommodating cavity;
FIG. 7 is a schematic view of a fixing mode of a front end bearing end cover of a simulated automobile brake cylinder load device with a continuously adjustable accommodating cavity, provided by the invention;
FIG. 8 is a schematic view of a sliding sleeve mounting and fixing mode of the simulated automobile brake cylinder load device with a continuously adjustable accommodating cavity, provided by the invention;
FIG. 9 is a schematic diagram of a fixing mode of a stay wire type displacement sensor of a device for simulating the load of a brake cylinder of an automobile, with a continuously adjustable accommodating cavity;
FIG. 10 is a schematic diagram of a measuring end fixing mode of a stay wire type displacement sensor of a simulated automobile brake wheel cylinder load device with a continuously adjustable accommodating cavity;
FIG. 11 is a coupling diagram of a simulated automobile brake cylinder load device with a continuously adjustable cavity according to the invention;
FIG. 12 is a schematic diagram of a coupling elastic element of a simulated automobile brake cylinder load device with a continuously adjustable accommodating cavity according to the invention;
FIG. 13 shows a coupling claw of a simulated automobile brake cylinder load device with a continuously adjustable cavity according to the present invention;
FIG. 14 is a control schematic diagram of a driving motor of a simulated automobile brake cylinder load device with a continuously adjustable cavity according to the invention.
In the figure: 1. the hydraulic cylinder comprises a single-action hydraulic cylinder, 2, a hydraulic cylinder fixing rod, 3, a hydraulic cylinder piston rod, 4, a sliding sleeve, 5, a fixing support, 6, a sliding block mounting platform, 7, a displacement sensor measuring end fixing angle iron, 8, a lead screw, 9, a stay wire type displacement sensor, 10, a rear end bearing block end cover, 11, a coupler, 12, a helical gear reducer, 13, a driving motor, 14, a bottom support, 15, a front end bearing block, 16, a sliding rail mounting aluminum profile, 17, a sliding block, 18, a linear sliding rail, 19, a stay wire type displacement sensor fixing angle iron, 20, a rear end bearing block, 21, a reducer mounting plate, 22, a front end bearing block end cover, 23, an air release screw, 24, a fastening screw, 25, a fixing screw, 26, a fastening nut, 27, a stay wire, 28, a sliding sleeve mounting plate and 29, a deep groove ball bearing. 30 fastening bolts, 31 casting right-angle seats, 32 sliding block nuts and 33 connecting shields.
The specific implementation mode is as follows:
the invention is described in detail below with reference to the attached drawing figures:
referring to fig. 1 and 2, the device for simulating the load of the automobile brake wheel cylinder with the continuously adjustable containing cavity comprises a single-acting hydraulic cylinder 1, a hydraulic cylinder fixing rod 2, a hydraulic cylinder piston rod 3, a sliding sleeve 4, a fixing support 5, a sliding block mounting platform 6, a lead screw 8, a stay wire type displacement sensor 9, a coupling 11, a helical gear reducer 12, a driving motor 13, a bottom support 14, a front end bearing support 15, a sliding rail mounting aluminum profile 16, a sliding block 17, a linear sliding rail 18, a rear end bearing support 20, a reducer mounting plate 21, a front end bearing support end cover 22, a sliding sleeve mounting plate 28, a deep groove ball bearing 29 and a connecting shield 33.
A simulation automobile brake wheel cylinder load device with a continuously adjustable containing cavity comprises a bottom support 14, wherein a single-action hydraulic cylinder 1 is fixedly installed at the front end of the bottom support through a vertical support, two linear slide rails 18 are fixed in the middle of the bottom support 14 through slide rail installation aluminum profiles 16, a lead screw 8 is arranged between the two linear slide rails 18, the lead screw 8 is installed between the two linear slide rails 18 through a front end bearing support 15, a rear end bearing support 20 and a deep groove ball bearing 29 corresponding to the interiors of the supports, the lead screw 8 and the deep groove ball bearing 29 are in interference fit, a sliding block 17 capable of sliding along the linear slide rails 18 is installed on the two linear slide rails 18, the sliding blocks 17 on two sides are fixedly connected with a sliding block installation platform 6, a fixed support 5 is fixed on the upper surface of the sliding block installation platform 6, the front end of a piston rod 3 of a hydraulic cylinder is connected with the top end of the fixed support 5 through a fastening nut 26, a sliding sleeve 4 and a sliding sleeve installation plate 28 are located at the front end of the sliding block 17, the sliding sleeve 4 is screwed in and installed to the lead screw 8 by means of internal threads, so that the sliding sleeve 4 can move under the rotation of the lead screw 8, and meanwhile, the sliding sleeve installation plate 28 and the sliding rail installation platform 6 are driven, the sliding block 4 is driven by the sliding rail installation platform 6 to slide along the linear sliding rail 18, one end of the lead screw 8, which protrudes out of the rear end bearing support 20, is connected with an output shaft of a helical gear reducer 12 fixed at the rear end of the bottom support 14 through a coupler 11, the outside of the helical gear reducer 12 is connected with a driving motor through a connecting shield 33, an input shaft inside the helical gear reducer 12 is an output shaft of the driving motor 13, a measuring end fixed angle iron 7 of a displacement sensor is fixedly installed at the rear end of the sliding block installation platform 6, a stay-type displacement sensor 9 is fixedly installed at the top of the rear end bearing support end cover 10, and a stay-type displacement sensor is arranged between the stay-type displacement sensor 9 and the measuring end fixed angle iron 7 of the stay-type displacement sensor 9, and a sensor wire 27.
The bottom support 14 of the device is a rectangular plane frame-type structural member and consists of 2 longitudinal beams, 6 cross beams and 4 vertical beams. Four cross beams are uniformly distributed between the two longitudinal beams and are fixedly connected with the slide block nut through the cast right-angle seat 31, the fastening screw 24 and the slide block. The longitudinal beams are made of 4040 section bars, which are square sections with the side length of 40mm, and each side surface is provided with a T-shaped groove, and the length of the longitudinal beams is 1000mm in the embodiment. The fastening bolt 30 fixedly installed and used in the device bottom support is a special semicircular head bolt with the model of HOU6x12-6, the cast right-angle seat 31 is an European standard connecting piece with the model of HOU3030, and the slide block nut 32 is an European standard connecting piece with the model of HOU 5-8-30. The front end of the bottom support consists of four vertical beams and two cross beams, and all the beams are made of profiles with the model number 3030. The cast right-angle seat 31 is a European standard connecting piece with the model of HOU3030, and the slide block nut 32 is a European standard connecting piece with the model of HOU 5-8-30.
Referring to fig. 3, the device for simulating the load of the automobile brake cylinder with the continuously adjustable cavity adopts the single-acting hydraulic cylinder 1, the size of the brake cylinder is simulated by changing the volume of the hydraulic cylinder 1, so that the response characteristic of the brake load is changed to meet the requirement of simulating the brake load of different automobile types, meanwhile, the movement of the piston rod causes the position change of the stay wire type displacement sensor 9, and the displacement reading of the stay wire type displacement sensor 9 is displayed on a sensor liquid crystal screen and converted into the volume information of the wheel cylinder through calculation.
The single-acting hydraulic cylinder 1 is selected from the single-acting hydraulic cylinder 1 with the model of MOB-FA30 x 80, one end of the hydraulic cylinder fixing rod 2 with threads penetrates through the fixed angle iron fixing holes on the two sides and the cylinder body support longitudinal fixing hole, and the inner hexagonal cylindrical nut is screwed into the threads of the hydraulic cylinder fixing rod 2 to fix the oil cylinder and the fixed angle iron. One side of the upper end of the cylinder body, which is close to the oil inlet, is provided with a threaded hole with the diameter of 6mm, and a deflation screw 23 is arranged at the upper end of the cylinder body through the threaded hole. The tail end of the hydraulic cylinder piston rod 3 is provided with threads and can be fixedly connected with the fixed support 5 through a fastening nut 26.
Referring to fig. 4, the driving motor 13, the connecting shield 33, the helical gear reducer 12, and the reducer mounting plate 21 are shown. Reducer mounting panel 21 is a long 190mm, and wide 150mm, the steel sheet that is 5mm thick, and four corners department is provided with the diameter and is 6 mm's screw hole, is provided with four diameters in the middle of reducer mounting panel 21 and is 5 mm's through-hole, and is corresponding with reducer base bottom mounting hole. The reducer mounting plate 21 is parallel to the device bottom bracket 14, and the reducer mounting plate 21 is fixedly connected with the slider nut 32 and the bottom bracket 14 through the threaded holes at four corners by the fastening bolts 30.
Referring to fig. 5, 6, 7 and 8, the mechanism in the figures is composed of a slide rail mounting aluminum profile 16, a linear slide rail 18, a front end bearing support end cover 22, a rear end bearing support end cover 10, a lead screw 8, a sliding sleeve mounting plate 28, a slide block mounting platform 6, a linear slide rail 18, a deep groove ball bearing 29, a front end bearing support 15, a rear end bearing support 20 and a fastening bolt 30.
The slide rail mounting aluminum profile 16 is made of HK120 material 6023T5. The fastening bolt 30 is inserted into the through hole at the bottom of the cast right-angle seat 31 and fixedly connected with the slider nut 32 installed inside the device bottom bracket 14, and the cast right-angle seat 31 abuts against the two ends of the slide rail installation aluminum profile 16 to fix the slide rail installation aluminum profile 16 at the fixed position of the bottom bracket 14.
The linear slide rail 18 is a linear slide rail with the model number of HGW4CC, and the linear slide rail 18 can bear the loads of the upper part, the lower part, the left part and the right part at the same time through the special restraining structure design. Two sets of guide rails are respectively arranged on the rail planes of the upper surfaces of the two sides of the slide rail installation aluminum profile 16, one end of the linear slide rail 18 is abutted against the rear surface of the front end bearing support 15 at the front end, and the other end of the linear slide rail 18 is fixed by the following method: the fastening bolt 30 is inserted into the through hole at the bottom of the cast right angle seat 31 and is fixedly connected with a slide block nut 32 arranged in the rail plane, the front end surface of the cast right angle seat 30 abuts against one end of the linear slide rail 18, and the front end bearing support 15 fixes the linear slide rail 18 together. The sliding block 17 on the linear sliding rail 18 is provided with a self-locking nut, and when the sliding block 17 is adjusted to a target position, the self-locking nut can be screwed down to fix the sliding block 17 at a specified position so as to prevent the sliding block 17 from loosening.
The front end bearing support 15 is a bearing support of model WBK DF-WBK DFF, fastening screws 24 penetrate through four threaded holes at two ends of the bearing support and are fixedly connected with threaded holes in the slide rail mounting aluminum profile 16, deep groove ball bearings 29 are mounted in the front end bearing support 15, high-carbon chromium bearing steel bearings of model RQZC30200 are selected as the deep groove ball bearings 29, and fastening bolts 30 are fixedly connected with the threaded holes in the front end bearing support 15 through the threaded holes in the front end bearing support end cover 22. The rear end bearing support 20 is the same as the front end bearing support 15 in model and installation mode, and the difference is that a through hole with the diameter of 20mm is arranged in the middle of the rear end bearing support end cover 10, so that a space is provided for the screw rod 8.
The high-speed mute lead screw 8 is selected from a high-speed mute lead screw of which the model is XSVR01520, the front end of the lead screw 8 is in interference fit with the deep groove ball bearing 29, and the rear end of the lead screw 8 is in interference fit with the inner ring of the deep groove ball bearing 29. The fastening screw 24 passes through the front end surface of the sliding sleeve 4 and the threaded hole of the sliding sleeve mounting plate 28 to fasten the sliding sleeve 4 and the sliding sleeve mounting plate 28. The fastening screw 24 fastens the sliding sleeve mounting plate 28 and the sliding block mounting platform 6 through the surface of the front end of the sliding sleeve mounting plate 28 and the threaded hole of the front end of the sliding block mounting platform 6. The fastening screw 24 penetrates through a counter bore on the upper surface of the sliding block mounting platform 6, is screwed into a threaded hole with the corresponding diameter of 2mm on the sliding block 17, and fixedly connects the sliding block mounting platform 6 with the sliding blocks 17 on the two sides. The fastening bolt 30 passes through the mounting hole of the fixed support 5 and is screwed into a threaded hole with the diameter of 2mm on the upper surface of the sliding block mounting platform 6, so that the fixed support 5 is fixedly connected with the sliding block mounting platform 6. The fixed support 5 is fixedly connected with the hydraulic cylinder piston rod 3, and the specific method is that a fastening nut 26 is screwed into a thread on the hydraulic cylinder piston rod 3, one end of the hydraulic cylinder piston rod 3 penetrates through a mounting hole at the upper end of the fixed support 5, one side of the fastening nut 26 is tightly attached to the front end surface of the fixed support 5, and the other fastening nut 26 is screwed into the thread of the hydraulic cylinder piston rod 3, so that the fastening nut 26 is tightly attached to the rear end surface of the fixed support 5.
The input shaft of the screw rod 8 is connected with the output shaft of the helical gear reducer 12 through a coupler 11, the coupler 11 is a high-strength plum-blossom-shaped coupler with the model of KH8-20, and the fixing mode is key-groove fixing. An input shaft of the screw 8 and an output shaft of the helical gear reducer 12 are respectively inserted into two ends of the coupler 11, so that the output shaft of the helical gear reducer 12 is fixedly connected with the input shaft of the screw 8.
The driving motor 13 is a YVP250M-2 three-phase variable frequency speed regulation driving motor. The gear reducer 12 is the helical gear reducer 12 with the model number of R47-Y11.5KW-4P-12.54, and the installation mode is horizontal installation.
The driving motor 13 is circumferentially arrayed with 4 threaded holes with the diameter of 6mm on the power output end shell, the connecting shield 33 is also circumferentially arrayed with 4 threaded holes with the diameter of 6mm towards one end of the motor, and the two parts are fixedly connected through the driving motor 13 and the threaded holes of the connecting shield 33 by the fastening screws 24. The connecting shield 33 is provided with 4 threaded holes with the diameter of 6mm arranged on the circumference of one end of the helical gear reducer 12, 4 threaded holes with the diameter of 6mm are arranged on the circumference of the input shaft of the helical gear reducer 12 in the same circumferential array mode, and the two parts are fixedly connected through the helical gear reducer 12 and the threaded holes of the connecting shield 33 by the fastening screws 24. The fastening screw 24 is a special half-head screw with the model of HOU-6x 12-6. Each corner of the base of the helical gear reducer 12 is provided with a through hole with the diameter of 6mm, the arrangement position of the through holes is consistent with that of the accelerator mounting plate 21, and the fastening bolt 30 penetrates through the base and the through holes of the reducer mounting plate 21 and is fixedly connected with the fastening nut 26 tightly attached to the lower surface of the reducer mounting plate 21.
The circuit diagram of the forward and reverse rotation control circuit of the three-phase variable-frequency speed-regulating driving motor is shown in fig. 13, wherein SB1 is a forward rotation starting button, SB2 is a reverse rotation starting button, a stop button SB3 is additionally arranged, Q1 and Q2 are relays, and M is a three-phase alternating-current motor. The working principle is as follows: when the motor rotates forwards, the button SB1 is pressed, the relay Q1 is electrified and self-locked, the normally open contact is closed, and the motor operates normally; when the motor stops, the button SB3 is pressed, the power of the K1 is lost, and the motor stops. When the motor rotates reversely, the button SB2 is pressed, the relay K2 is electrified to absorb and self-lock, the normally open contact is closed, and the motor rotates reversely; when the motor stops, the button SB3 is pressed, the K2 is de-energized and released, and the motor stops. The control circuit is connected in series with the normally closed auxiliary contact of the thermal relay in the frequency converter, so that the circuit protection performance is improved.
Referring to fig. 9 and 10, the small-range stay wire type displacement sensor with the model of MPS-XS-4-20mA is selected for the stay wire type displacement sensor 9, two sides of the stay wire type displacement sensor 9 are respectively provided with a mounting threaded hole with the diameter of 4mm, meanwhile, 2 mounting threaded holes with the diameter of 4mm are arranged at the upper end of the rear end bearing support 20, and the method for mounting the stay wire type displacement sensor 9 on the rear end bearing support 20 is as follows: the measuring end of the stay-supported displacement sensor 9 is fixedly connected to a rear-end bearing support 20 through a stay-supported displacement sensor fixed angle iron 19 and 2 fastening screws 24, the measuring end of the stay-supported displacement sensor 9 is fixed to a sliding block mounting platform 6 through a displacement sensor measuring end fixed angle iron 7 and a fastening nut 26, the measuring end is connected with the stay-supported displacement sensor 9 through a silk thread, the stay-supported displacement sensor 12 is mounted at the position of a shaft in the sliding block mounting platform 6, the measuring end fixed angle iron 7 is fixed to a displacement sensor measuring end fixed spacer in a tightly attached mode on the front end surface of the displacement sensor measuring end fixed angle iron 7, the fastening nut 26 is screwed with a threaded connector at the other side of the fixed angle iron 7, the displacement sensor measuring end is fixed to the sliding block mounting platform 6, when the sliding block mounting platform 6 moves, the sliding block mounting platform 6 moves to drive the sensor measuring end to move, at the moment, the stay-supported displacement sensor 9 outputs displacement information on a display screen, and the displacement information is converted into analog volume information through calculation.
The working principle of the device for simulating the load of the automobile brake wheel cylinder with the continuously adjustable containing cavity is as follows:
referring to fig. 1 and 2, a simulated automobile brake cylinder load device with an adjustable cavity is provided.
A simulation automobile brake wheel cylinder load device with a continuously adjustable cavity replaces an original real automobile brake wheel cylinder with a variable-volume hydraulic cylinder, and the volume of the wheel cylinder brake fluid in a brake circuit is increased or decreased by controlling the volume of the wheel cylinder, so that the change of brake pressure is controlled. This manner of adjustment is referred to as variable volume pressure adjustment. The principles of which are based on the references: automobile ABS brake pressure variation rate model test (published in agricultural mechanics journal, author: li Zhiyuan, liu Zhaodu, cui Haifeng, wang Renan, volume 9, volume 38, 2007):
the dynamic equations in the pressurizing and pressure maintaining stages during automobile braking are respectively as follows:
dynamic equation of the pressurization stage during automobile braking:
equation in winter in the pressure maintaining stage when the automobile is braked:
wherein V 0 Volume of wheel cylinder, p c As wheel cylinder pressure, K c Is the equivalent bulk modulus of elasticity, R, of the wheel cylinder e For equivalent hydraulic resistance in the supercharging process, R e ' is the equivalent hydraulic resistance, p, during depressurization v Is the wheel cylinder inlet pressure, h 1 And h 2 Is the throttle index. It can be seen that the wheel cylinder volume influences the pressure increasing and reducing process performance of the automobile brake system, so that the brake wheel cylinder load of each automobile type is simulated through the changed brake wheel cylinder volume.
The specific using process is as follows:
before a bench test, an input port of a single-acting hydraulic cylinder 1 needs to be connected to an output port of a brake master cylinder of a bench through a brake pipeline to ensure the sealing of an output pipeline, brake hydraulic oil of the output pipeline can be input to the single-acting hydraulic cylinder 1 of the analog automobile brake wheel cylinder load device with the continuously adjustable cavity without loss, a driving motor part needs to be connected to a power supply circuit to ensure the normal work of a driving motor 13, a stay wire type displacement sensor 9 also needs to be electrified, the number of a stay wire type displacement sensor at an initial position is determined to be zero while a hydraulic cylinder piston rod 2 of the single-acting piston cylinder 1 is ensured to be at a zero working volume position, the displacement of the piston rod when a target analog volume is obtained through obtaining the volume information of an analog target brake wheel cylinder, the calculated displacement is used as a target displacement, and the positive and negative rotation of the driving motor 13 is controlled to ensure that the volume of the single-acting hydraulic cylinder is simulated so as to achieve the purpose of simulating the volume of the brake wheel cylinder.
When the device for simulating the load of the automobile brake wheel cylinder with the continuously adjustable accommodating cavity works initially, the piston rod 3 of the single-acting hydraulic cylinder is located at the initial position, namely the working space of the single-acting hydraulic cylinder 1 is zero, and the reading W of the stay wire type displacement sensor 9 at the moment is recorded 1 The oil inlet end of the single-acting hydraulic cylinder 1 is connected into a brake pipeline separated from a brake main cylinder, meanwhile, a driving motor 13 is powered on, a switch motor is pressed to rotate forwards, the driving motor 13 works to drive a helical gear reducer 12 to rotate, an output shaft of the helical gear reducer 12 drives a lead screw 8 to rotate through a coupler 11, the lead screw 8 rotates to drive a sliding sleeve 4, a sliding sleeve mounting plate 28, a sliding block mounting platform 6, a sliding block 17 and a fixed support 5 simultaneously move towards the rear end of the device, the fixed support 5 moves to drive a hydraulic cylinder piston rod 3, and the working volume of the single-acting hydraulic cylinder 1 can be enlarged. Pressing down driving motor 13's reversal switch, 8 antiport of lead screw, sliding sleeve 4 drive sliding sleeve mounting panel 28, slider mounting platform 6, fixing support 5 move to the front end, and single-action pneumatic cylinder piston rod 3 antiport under fixing support 5's drive, and 1 working volume of single-action pneumatic cylinder also diminishes along with it. Pressing down the stop button of driving motor 13, hydraulic cylinder piston rod 3 can be fixed at the present position because of the auto-lock of lead screw 8, and stay-supported displacement sensor 9 measuring end changes along with the shift position of slider mounting platform 6, records the 9 registration W of stay-supported displacement sensor this moment 2 Based on fore-and-aft displacement sensorsThe volume information of the simulated brake wheel cylinder can be calculated through the index change, and the specific calculation formula is as follows:
V＝(W 1 -W 2 )×S
v is the volume of the wheel cylinder, W 1 Is displacement indication, W, of a motor of a stay wire type displacement sensor before operation 2 The displacement indication of the motor of the stay wire type displacement sensor after working is shown, and S is the cross section area of the containing cavity of the single-acting hydraulic cylinder.
Claims (4)
1. A simulation automobile brake wheel cylinder load device with a continuously adjustable containing cavity is characterized by comprising a bottom support (14), a single-action hydraulic cylinder (1) is fixedly installed at the front end of the bottom support (14) through a vertical support, two linear sliding rails (18) are fixed in the middle of the bottom support (14) through sliding rail installation aluminum profiles (16), a lead screw (8) is arranged between the two linear sliding rails (18), the lead screw (8) is installed between the two linear sliding rails (18) through a front end bearing support (15) and a rear end bearing support (20) and deep groove ball bearings (29) inside the two supports, the lead screw (8) and the deep groove ball bearings (29) are in interference fit, wherein one end of the lead screw (8) penetrates through a rear end bearing support end cover (10) of the rear end bearing support (20), two linear sliding rails (18) are respectively provided with a sliding block (17) capable of sliding along the linear sliding rails (18), the sliding blocks (17) on the two sides are fixedly connected with a sliding block installation platform (6), a fixed support (5) is fixed on the upper surface of the sliding block installation platform (6), a sliding block (3) is connected with a sliding sleeve (4) through a sliding sleeve (26), and a sliding sleeve (8) which is connected with a front end of a sliding sleeve (4) through a nut (26), the sliding sleeve (4) can move under the rotation of a lead screw (8) and simultaneously drive a sliding sleeve mounting plate (28) and a sliding rail mounting platform (6) to move, the sliding rail mounting platform (6) drives a sliding block (17) to slide along a linear sliding rail (18), the sliding block (17) is provided with a self-locking nut, when the sliding sleeve is adjusted to a target position, the self-locking nut is screwed, the sliding block (17) is fixed at a specified position, one end of the lead screw (8), which penetrates through a rear end bearing support (20), is connected with an output shaft of an oblique tooth gear reducer (12) fixed at the rear end of a bottom support (14) through a coupler (11), the outside of the oblique tooth gear reducer (12) is connected with a driving motor through a connecting shield (33), an input shaft inside the oblique tooth gear reducer (12) is an output shaft of the driving motor (13), a displacement sensor measuring end fixed angle iron (7) is fixedly installed at the rear end of the sliding block mounting platform (6), a stay wire type displacement sensor (9) is fixedly installed at the top of a stay wire type displacement sensor (9), and the stay wire type displacement sensor (7) is fixed.
2. The simulated automobile brake wheel cylinder load device with the continuously adjustable cavity as claimed in claim 1, is characterized in that:
the fixed support (5) is fixedly connected with the sliding rail mounting platform (6) through a fastening screw (24), the sliding sleeve (4) is connected with a sliding sleeve mounting plate (28) through the fastening screw (24), and the sliding sleeve mounting plate (28) is connected with the front end of the sliding block mounting platform (6) through the fastening screw (24);
the lead screw (8) is fixed in the center of the slide rail mounting aluminum profile (16) through a deep groove ball bearing (29), a front end bearing support (15), a rear end bearing support (20) and fastening screws (24), the front end bearing support (15) and the rear end bearing support (20) are fixed at the front end and the rear end of the slide rail mounting aluminum profile (16) through the fastening screws (24), and the deep groove ball bearing (29) is in interference fit with the rear end bearing support (20) and the front end bearing support (15);
linear slide rail (18) are installed in the track plane of slide rail installation aluminium alloy (16) both sides upper surface, linear slide rail (18) one end is supported and is leaned on front end bearing support (15) rear surface, the through-hole of the other end through fastening bolt (30) insertion casting right angle seat (31) bottom with install slider nut (32) fixed connection in the track plane inside, casting right angle seat (31) front end surface and supporting the one end at linear slide rail (18), together with front end bearing support (15) fixed linear slide rail (18).
3. The simulated automobile brake wheel cylinder load device with the continuously adjustable cavity as claimed in claim 1, is characterized in that: skewed tooth gear reducer (12) fix the rear end in bottom support (14) through a reduction gear mounting panel (21), reduction gear mounting panel (21) be a long 190mm, wide 150mm, the steel sheet that is 5mm thick, four angle departments of reduction gear mounting panel (21) are provided with the screw hole that the diameter is 6mm, be provided with four diameters in the middle of reduction gear mounting panel (21) and be 5 mm's through-hole, it is corresponding with the base bottom mounting hole of skewed tooth gear reducer (12), reduction gear mounting panel (21) are on a parallel with device bottom support (14), reduction gear mounting panel (21) pass the screw hole and slider nut (32) and bottom support (14) fixed connection of four angle departments through fastening screw (24).
4. The simulated automobile brake wheel cylinder load device with the continuously adjustable cavity as claimed in claim 1, is characterized in that: the input of lead screw (8) and the output of skewed tooth gear reducer (12) use shaft coupling (11) to connect, what shaft coupling (11) adopted is the plum blossom shaft coupling, shaft coupling (11) comprise two shaft coupling prongs and an elastic component, two elasticity prongs are at the mutual interlock of prong direction, radial interlock clearance position is filled by plum blossom elastic component, lead screw (8) one end and shaft coupling prong adopt parallel key fixed connection with lead screw (8) input, the prong of skewed tooth gear reducer (12) one end adopts parallel key fixed connection with the output shaft of skewed tooth gear reducer (12) equally.
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| CN201710043573.6A CN106769102B (en) | 2017-01-19 | 2017-01-19 | Device capable of continuously adjusting capacity and simulating load of automobile brake wheel cylinder |
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| CN201710043573.6A CN106769102B (en) | 2017-01-19 | 2017-01-19 | Device capable of continuously adjusting capacity and simulating load of automobile brake wheel cylinder |
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| CN106769102B true CN106769102B (en) | 2023-04-07 |
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| CN107560876B (en) * | 2017-10-26 | 2024-02-09 | 尚义县顺复机动车检测有限公司 | Detection device and detection method for automobile expander |
| CN109724798A (en) * | 2017-10-31 | 2019-05-07 | 北京精密机电控制设备研究所 | A kind of loading device based on crank block configuration |
| CN109540570A (en) * | 2019-01-08 | 2019-03-29 | 北京市城市管理研究院（北京市环境卫生监测中心） | The cleaning sampling platform system of sweep machine sweep performance test stand |
| CN110220681B (en) * | 2019-05-29 | 2021-02-05 | 嘉兴盛鼎机械有限公司 | Fatigue test method for parking release mechanism of double-diaphragm disc type spring brake chamber |
| CN113623292A (en) * | 2021-08-16 | 2021-11-09 | 兖矿东华重工有限公司 | Full-stroke sealing performance test bed for hydraulic cylinder |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0843260A (en) * | 1994-07-27 | 1996-02-16 | Toyo Electric Mfg Co Ltd | Device for testing parts of driving mechanism of automobile |
| CN1648631A (en) * | 2004-06-01 | 2005-08-03 | 北京理工大学 | Test table of automobile braking ABS based on brake inertia test |
| CN102944419A (en) * | 2012-11-18 | 2013-02-27 | 吉林大学 | Ball screw pair reliability test stand provided with electro-hydraulic servo loading devices |
| CN103852256A (en) * | 2014-01-14 | 2014-06-11 | 南京理工大学 | Reliability test device of ball screw pairs |
| KR20150118211A (en) * | 2014-04-11 | 2015-10-22 | 주식회사 만도 | Electric brake system |
| CN206430916U (en) * | 2017-01-19 | 2017-08-22 | 吉林大学 | A kind of simulated automotive wheel cylinder deceleration loading device of cavity volume continuously adjustabe |
-
2017
- 2017-01-19 CN CN201710043573.6A patent/CN106769102B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0843260A (en) * | 1994-07-27 | 1996-02-16 | Toyo Electric Mfg Co Ltd | Device for testing parts of driving mechanism of automobile |
| CN1648631A (en) * | 2004-06-01 | 2005-08-03 | 北京理工大学 | Test table of automobile braking ABS based on brake inertia test |
| CN102944419A (en) * | 2012-11-18 | 2013-02-27 | 吉林大学 | Ball screw pair reliability test stand provided with electro-hydraulic servo loading devices |
| CN103852256A (en) * | 2014-01-14 | 2014-06-11 | 南京理工大学 | Reliability test device of ball screw pairs |
| KR20150118211A (en) * | 2014-04-11 | 2015-10-22 | 주식회사 만도 | Electric brake system |
| CN206430916U (en) * | 2017-01-19 | 2017-08-22 | 吉林大学 | A kind of simulated automotive wheel cylinder deceleration loading device of cavity volume continuously adjustabe |
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