CN112485023B - Fatigue performance detection device for double-acting brake pump of automobile brake system - Google Patents
Fatigue performance detection device for double-acting brake pump of automobile brake system Download PDFInfo
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- CN112485023B CN112485023B CN202011538322.3A CN202011538322A CN112485023B CN 112485023 B CN112485023 B CN 112485023B CN 202011538322 A CN202011538322 A CN 202011538322A CN 112485023 B CN112485023 B CN 112485023B
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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 relates to the technical field of automobile brake system detection, in particular to a double-acting brake pump fatigue performance detection device of an automobile brake system, which comprises a limiting mechanism and a double-acting connecting mechanism, wherein the double-acting connecting mechanism comprises a driving cylinder, a pedal mechanism and a plurality of buffer assemblies, the limiting mechanism comprises a quick hinge assembly for positioning the double-acting brake pump and a limiting assembly for limiting the output direction of the double-acting brake pump, and the quick hinge assembly and the limiting assembly are both arranged at one end of a rectangular frame, which is far away from the double-acting connecting mechanism.
Description
Technical Field
The invention relates to the technical field of automobile brake system detection, in particular to a double-acting brake pump fatigue performance detection device of an automobile brake system.
Background
Along with the demand tractor model is bigger and bigger, the diameter of its brake disc and friction disc is also bigger and bigger relatively, and the discharge capacity between brake disc and the friction disc also corresponds the grow, and the oil inlet volume of demand increases during vehicle braking, and the cylinder diameter of brake pump need be designed bigger and bigger for this reason, and the piston area is big and the effort that corresponds the needs just is big, and the brake pedal is heavy, is not convenient for brake operation.
The patent number is CN201822225077.5, which comprises a shell and a piston arranged in the shell, wherein a plurality of cavities are arranged in the brake pump, the oil quantity required by vehicle braking can be met, a braking working cavity is smaller relative to a main cavity of a pump body, the area of the piston corresponding to the braking working cavity is small, the corresponding braking acting force is small, the brake pedal is convenient to operate, and the double-acting brake pump is shown in figure 1.
The double-acting brake pump is two split brake pumps which are arranged side by side, and working cavities of the two brake pumps are connected through a serial pipeline and a serial pipeline; or two cavities arranged side by side are arranged in the pump body, working cavities of the two cavities are connected with a series channel arranged in the pump body through a series valve, and the series valve has the following functions: when any one side is stepped on, the tractor can work independently, the single side is braked (when the tractor steers), and when the two sides are stepped on simultaneously, the two cavities are communicated, so that the pressure balance is ensured and the deviation is not caused.
However, in the case of long-term use of the conventional clutch servo cylinder, oil leakage occurs, and therefore, it is necessary to detect fatigue performance of the clutch servo cylinder before delivery and to detect sealing performance of the clutch servo cylinder.
Disclosure of Invention
The invention aims to provide a double-acting brake pump fatigue performance detection device of an automobile brake system, which aims to solve the problems in the background technology.
The technical scheme of the invention is as follows:
the utility model provides a car braking system's double-acting brake pump fatigue performance detection device, rectangular frame and oil pump including the level is placed, detection device is including setting up the stop gear at rectangular frame both ends respectively and with double-acting brake pump's output articulated double-acting coupling mechanism, double-acting coupling mechanism is including driving actuating cylinder, pedal mechanism and a plurality of and double-acting brake pump output articulated buffering subassembly that is used for separation and reunion helping hand cylinder fatigue performance to detect, pedal mechanism slidable mounting is at rectangular frame's top, drive actuating cylinder and install the top at rectangular frame, and all buffering subassemblies are installed and are located pedal mechanism's below position at rectangular frame, stop gear carries out spacing subassembly including being used for carrying out the quick articulated subassembly of double-acting brake pump location and being used for carrying out spacing subassembly to double-acting brake pump's direction of delivery, quick articulated subassembly and spacing subassembly are all installed and are kept away from double-acting coupling mechanism's one end at rectangular frame.
Further, the pedal mechanism is installed at rectangular frame top slide, rotation axis and footboard including a plurality of, the slide is parallel with rectangular frame's length direction, the central line of rotation axis horizontal perpendicular to slide, rotation axis both ends all are provided with the bearing frame, and all bearing frames have all slides one by one sliding fit respectively, footboard and rotation axis one end fixed connection, install a plurality of on the rotation axis and stir the slat.
Further, rectangular frame's middle section is provided with the middle slat of horizontal perpendicular to slide central line, the buffering subassembly is including guide bar and buffer spring, the central line of guide bar is parallel with the central line of slide, be equipped with the guiding hole that supplies the guide bar to slide and pass on the middle slat, buffer spring cup joints in the guide bar and is located one side that the spacing subassembly was kept away from to the slat, the one end fixed mounting that the guide bar is close to spacing subassembly has the articulated joint.
Furthermore, the output shaft of the driving cylinder inclines downwards and points to the limiting assembly, a wedge plate for mounting the driving cylinder is arranged at the top of the rectangular frame, the axis of the output shaft of the driving cylinder is perpendicular to the axis of the rotating shaft, and a connector is arranged at the output end of the driving cylinder.
Furthermore, the quick hinge assembly comprises a positioning cylinder and two hinge plates which are parallel to each other, positioning holes are formed in the hinge plates, the hinge plates are fixed on the rectangular frame, the plane where the hinge plates are located is perpendicular to the axis of the rotating shaft, a positioning sleeve is sleeved at the output end of the positioning cylinder and is of a cylindrical structure, a buffering soft layer is arranged between the positioning sleeve and the output shaft of the positioning cylinder, the diameter of the positioning sleeve is the same as that of the positioning holes, the diameter of the positioning sleeve is larger than that of the output shaft of the positioning cylinder, and the output direction of the positioning cylinder is parallel to the axis of the rotating shaft.
Furthermore, the end part of the positioning sleeve, which is far away from the driving cylinder, is inverted with a conical surface.
Further, spacing subassembly is including fixing installation flat board, two limiting plates and two stoppers that all are parallel with the articulated slab at the articulated slab side, be provided with a plurality of endocentric circular arc holes on the limiting plate, every stopper passes through all circular arc hole one-to-one sliding fit on a plurality of bolt and one of them limiting plate, the dull and stereotyped bottom fixed mounting of installation has a plurality of all to be parallel with the rotation axis's lead screw, and every limiting plate all is provided with the through-hole that supplies all lead screws to pass, and one side that two stoppers are relative is provided with V face spacing groove.
The invention provides a fatigue performance detection device for a double-acting brake pump of an automobile brake system by improvement, compared with the prior art, the fatigue performance detection device has the following improvements and advantages:
one is as follows: the invention can detect the fatigue performance of the double-acting brake pump before delivery and the sealing performance of the clutch boosting oil cylinder, improve the delivery quality of the double-acting brake pump and reduce the defective rate.
The second step is as follows: the quick hinge assembly can quickly hinge the tail end of the double-acting brake pump, so that the step of manually hinging the tail end of the double-acting brake pump is omitted, and the detection progress is accelerated.
And thirdly: the limiting assembly can ensure that the deviation force does not occur to the push rod when the push rod of the double-acting brake pump stretches back and forth in the cylinder body, eliminates the influence of the deviation force on the sliding of the push rod in the cylinder body, and improves the detection accuracy.
Drawings
The invention is further explained below with reference to the figures and examples:
FIG. 1 is a first perspective view of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a third perspective view of the present invention;
FIG. 4 is an enlarged view at A of FIG. 3;
FIG. 5 is a schematic perspective view of the spacing assembly of the present invention;
description of the reference numerals:
the device comprises a rectangular frame 1, a slide way 11, a rotating shaft 12, a pedal 13, a driving cylinder 14, a wedge plate 15, a connector 16, a pedal mechanism 17, a toggle strip plate 18, a buffer assembly 19, a guide rod 20, a buffer spring 21, a hinge joint 22, a quick hinge assembly 23, a positioning cylinder 24, a hinge plate 25, a positioning sleeve 26, a buffer soft layer 27, a limiting assembly 28, a mounting plate 29, a limiting plate 30, a limiting block 31, an arc hole 32, a screw rod 33, a bolt 34, a double-acting brake pump 35, a push rod 36, a bearing seat 37 and a middle strip plate 38.
Detailed Description
The present invention is described in detail below, and technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a double-acting brake pump fatigue performance detection device of an automobile brake system by improvement, as shown in fig. 1-5, comprising a horizontally placed rectangular frame 1 and an oil pump (not shown in the figure), wherein the detection device comprises a limiting mechanism respectively arranged at two ends of the rectangular frame 1 and a double-acting connecting mechanism hinged with the output end of a double-acting brake pump 35, the double-acting connecting mechanism comprises a driving cylinder 14, a pedal mechanism 17 used for detecting the fatigue performance of a clutch boosting cylinder and a plurality of buffer assemblies 19 hinged with the output end of the double-acting brake pump 35, the pedal mechanism 17 is slidably arranged at the top of the rectangular frame 1, the driving cylinder 14 is arranged at the top of the rectangular frame 1, all the buffer assemblies 19 are arranged at the lower position of the pedal mechanism 17 in the rectangular frame 1, the limiting mechanism comprises a quick hinge assembly 23 used for positioning the double-acting brake pump 35 and a double-acting limiting assembly 28 used for limiting the output direction of the double-acting brake pump 35, and the quick hinge assembly 23 and the limiting assembly 28 are both arranged at one end of the rectangular frame 1 far away from the connecting mechanism.
The double-acting brake pump 35 is internally provided with a plurality of cavities, the inner diameter of the oil flushing cavity is larger than that of the working cavity, the oil quantity required by vehicle braking can be met, meanwhile, the braking working cavity is smaller than the main cavity of the pump body, the area of a piston corresponding to the braking working cavity is small, and the corresponding braking acting force is small.
The double-acting brake pump 35 is two split brake pumps which are arranged side by side, and the working cavities of the split brake pumps are connected with a communication pipeline through a communication valve; or two cavities are arranged in the pump body side by side, and working cavities of the two cavities are connected with a serial channel arranged in the pump body through a serial valve. The function of the through valve is as follows: when any side is stepped on, the single-side brake can be operated independently (when the tractor steers). When two sides step on simultaneously, the two cavities are communicated, so that the pressure balance is ensured and the deviation is not caused.
The quick hinge assembly 23 and the limit assembly 28 cooperate to hinge the end of the double-acting brake pump 35 and limit the cylinder of the double-acting brake pump 35, then all the oil outlets of the double-acting brake pump 35 are communicated with the oil inlets of the oil pump, all the oil inlets of the double-acting brake pump 35 are communicated with the oil outlets of the oil pump, then the push rod 36 of the double-acting brake pump 35 can be hinged with the output end of the driving cylinder 14 or hinged with all the buffer assemblies 19, the oil pump starts to reversely feed oil into the double-acting brake pump 35, the piston in the double-acting brake pump 35 drives the push rod 36 to extend back and forth, the pressure of the oil pump is reduced by cooperation of the driving cylinder 14 or the buffer assemblies 19, the driving cylinder 14 cooperates with the oil pump to realize multiple times of extension and back of the push rod 36 in the cylinder until an oil leakage phenomenon exists between the cylinder and the piston rod, and the fatigue performance of the sealing ring in the double-acting brake pump 35 is detected.
The buffering assembly 19 is matched with the oil pump, when the oil pump feeds oil into the double-acting brake pump 35, the extending time and the extending length of the two push rods 36 are different, and therefore the fact that the pressure of the split brake pump of the double-acting brake pump 35 is unbalanced is indicated, and potential safety hazards of braking are avoided.
Similarly, the quick hinge assembly 23 and the limit assembly 28 cooperate to hinge the tail end of the power cylinder and limit the cylinder body of the power cylinder, then all the oil outlet ends of the power cylinder are communicated with the oil inlet end of the oil pump, all the oil inlet ends of the power cylinder are communicated with the oil outlet end of the oil pump, then the toggle strip plate 18 is abutted against the push rod 36 of the double-acting brake pump 35, the pedal 13 is lightly stepped on to cooperate with the oil pump, so that the piston in the power cylinder drives the push rod 36 to extend and retract back until an oil leakage phenomenon exists between the cylinder body and the piston rod, and the fatigue performance of a sealing ring in the double-acting brake pump 35 is detected.
Rectangular frame 1's middle section is provided with the middle slat 38 of 11 central lines of horizontal perpendicular to slide, buffering subassembly 19 is including guide bar 20 and buffer spring 21, the central line of guide bar 20 is parallel with the central line of slide 11, be equipped with the guiding hole that supplies guide bar 20 to slide to pass on the middle slat 38, buffer spring 21 cup joints and is located one side that spacing subassembly 28 was kept away from to slat 38 in the middle of guide bar 20, one end fixed mounting that guide bar 20 is close to spacing subassembly 28 has articulated joint 22.
During the oil pump starts reverse oil feed and goes into double-acting brake pump 35, piston in double-acting brake pump 35 drives push rod 36 and makes a round trip to stretch out and draw back, cooperation through buffer unit 19, the pressure of the oil pump of reduction, it realizes push rod 36 and oil pump cooperation to make a round trip to stretch out and draw back many times in the cylinder body to drive actuating cylinder 14, slow work as the oil pump to double-acting brake pump 35 oil feed, two push rod 36 stretch out time and different in length this moment, it is unbalanced then to explain double-acting brake pump 35's components of a whole that can function independently brake pump pressure, the potential safety hazard that the brake can have.
The output shaft of the driving cylinder 14 inclines downwards and points to the limiting assembly 28, the top of the rectangular frame 1 is provided with a wedge plate 15 for mounting the driving cylinder 14, the axis of the output shaft of the driving cylinder 14 is perpendicular to the axis of the rotating shaft 12, and the output end of the driving cylinder 14 is provided with a connector 16.
When the oil pump is started, reverse oil is fed into the double-acting brake pump 35, the piston in the double-acting brake pump 35 drives the push rod 36 to stretch back and forth, the pressure of the oil pump is reduced by matching the driving cylinder 14, the driving cylinder 14 is matched with the oil pump to realize multiple times of back and forth stretching of the push rod 36 in the cylinder body until an oil leakage phenomenon exists between the cylinder body and the piston rod, and the fatigue performance of a sealing ring in the double-acting brake pump 35 is detected.
The quick hinge assembly 23 comprises a positioning cylinder 24 and two hinge plates 25 which are parallel to each other, wherein the hinge plates 25 are provided with positioning holes, the hinge plates 25 are fixed on the rectangular frame 1, the plane of the hinge plates 25 is perpendicular to the axis of the rotating shaft 12, the output end of the positioning cylinder 24 is sleeved with a positioning sleeve 26, the positioning sleeve 26 is of a cylindrical structure, a buffering soft layer 27 is arranged between the positioning sleeve 26 and the output shaft of the positioning cylinder 24, the diameter of the positioning sleeve 26 is the same as that of the positioning holes, the diameter of the positioning sleeve 26 is larger than that of the output shaft of the positioning cylinder 24, the output direction of the positioning cylinder 24 is parallel to the axis of the rotating shaft 12, the tail end of the double-acting brake pump 35 is placed between the two hinge plates 25, then the output shaft of the positioning cylinder 24 is started to extend out, the positioning sleeve 26 is driven to simultaneously penetrate through the positioning holes of the hinge plates 25 and the tail end of the double-acting brake pump 35, and the tail end of the double-acting brake pump 35 is hinged.
The end of the positioning sleeve 26 far away from the driving cylinder 14 is inverted with a conical surface, so that the positioning sleeve 26 can be conveniently butted into a positioning hole of the hinge plate 25.
The limiting assembly 28 is including fixing installation flat plate 29, two limiting plates 30 and two stopper 31 that all are parallel with articulated plate 25 at the articulated plate 25 side, be provided with a plurality of endocentric circular arc holes 32 on the limiting plate 30, every stopper 31 is through all circular arc holes 32 sliding fit on a plurality of bolt 34 and one of them limiting plate 30, the bottom fixed mounting of installation flat plate 29 has a plurality of all parallel with rotation axis 12's lead screw 33, every limiting plate 30 all is provided with the through-hole that supplies all lead screws 33 to pass, the relative one side of two stopper 31 is provided with V face spacing groove, when needing to change the articulated actuating cylinder 14 or the buffer assembly 19 that drives of push rod 36 of two effect brake pump 35, loosen bolt 34 on the stopper 31, stopper 31 can slide to the assigned position in circular arc hole 32, can lock, the distance adjustment between two stopper 31 that then can realize through the nut on the adjustment lead screw 33, the centre of a circle of all locating holes is on the central line of location cylinder 24.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. The utility model provides a two effect brake pump fatigue performance detection device of car braking system, includes rectangle frame (1) and the oil pump that the level was placed, its characterized in that: the detection device comprises limiting mechanisms respectively arranged at two ends of a rectangular frame (1) and a double-acting connecting mechanism hinged with the output end of a double-acting brake pump (35), the double-acting connecting mechanism comprises a driving air cylinder (14), a pedal mechanism (17) used for detecting fatigue performance of a clutch booster cylinder and a plurality of buffer components (19) hinged with the output end of the double-acting brake pump (35), the pedal mechanism (17) is slidably mounted at the top of the rectangular frame (1), the driving air cylinder (14) is mounted at the top of the rectangular frame (1), all the buffer components (19) are mounted at the lower position of the rectangular frame (1) located at the pedal mechanism (17), the limiting mechanism comprises a quick hinge component (23) used for positioning the double-acting brake pump (35) and a limiting component (28) used for limiting the output direction of the double-acting brake pump (35), and the double-acting quick hinge component (23) and the double-acting limiting component (28) are both mounted at one end, far away from the connecting mechanism, of the rectangular frame (1);
the pedal mechanism (17) comprises a plurality of slideways (11), a rotating shaft (12) and pedals (13), wherein the slideways (11) are installed at the top of the rectangular frame (1), the rotating shaft (12) is horizontally vertical to the central line of the slideways (11), bearing seats (37) are arranged at two ends of the rotating shaft (12), all the bearing seats (37) are respectively in one-to-one sliding fit with all the slideways (11), the pedals (13) are fixedly connected with one end of the rotating shaft (12), and a plurality of toggle strips (18) are installed on the rotating shaft (12);
the middle section of rectangular frame (1) is provided with middle slat (38) of horizontal perpendicular to slide (11) central line, buffering subassembly (19) are including guide bar (20) and buffer spring (21), the central line of guide bar (20) is parallel with the central line of slide (11), be equipped with the guiding hole that supplies guide bar (20) to slide to pass on middle slat (38), one side that spacing subassembly (28) was kept away from in slat (38) in the middle of buffer spring (21) cup joints guide bar (20), the one end fixed mounting that guide bar (20) are close to spacing subassembly (28) has articulated joint (22).
2. The fatigue performance detecting apparatus of a double-acting brake pump of an automobile brake system according to claim 1, characterized in that: the output shaft of the driving air cylinder (14) inclines downwards and points to the limiting assembly (28), a wedge plate (15) for mounting the driving air cylinder (14) is arranged at the top of the rectangular frame (1), the axis of the output shaft of the driving air cylinder (14) is perpendicular to the axis of the rotating shaft (12), and a connector (16) is arranged at the output end of the driving air cylinder (14).
3. The fatigue performance detecting apparatus of a double-acting brake pump of an automobile brake system according to claim 1, characterized in that: the quick hinge assembly (23) comprises a positioning cylinder (24) and two hinge plates (25) which are parallel to each other, wherein positioning holes are formed in the hinge plates (25), the hinge plates (25) are fixed on the rectangular frame (1), the plane where the hinge plates (25) are located is perpendicular to the axis of the rotating shaft (12), a positioning sleeve (26) is sleeved at the output end of the positioning cylinder (24), the positioning sleeve (26) is of a cylindrical structure, a buffering soft layer (27) is arranged between the positioning sleeve (26) and the output shaft of the positioning cylinder (24), the diameter of the positioning sleeve (26) is the same as that of the positioning holes, the diameter of the positioning sleeve (26) is larger than that of the output shaft of the positioning cylinder (24), and the output direction of the positioning cylinder (24) is parallel to the axis of the rotating shaft (12).
4. The double-acting brake pump fatigue performance detection device of the automobile brake system according to claim 3, characterized in that: the end part of the positioning sleeve (26) far away from the driving cylinder (14) is inverted with a conical surface.
5. The double-acting brake pump fatigue performance detection apparatus of the automobile brake system according to claim 4, characterized in that: spacing subassembly (28) are including fixing installation flat board (29), two limiting plate (30) and two stopper (31) that all are parallel with articulated slab (25) at articulated slab (25) side, be provided with a plurality of endocentric circular arc hole (32) on limiting plate (30), every stopper (31) through all circular arc hole (32) one-by-one sliding fit on a plurality of bolt (34) and one of them limiting plate (30), the bottom fixed mounting of installation flat board (29) has lead screw (33) that a plurality of all is parallel with rotation axis (12), and every limiting plate (30) all is provided with the through-hole that supplies all lead screw (33) to pass, and two stopper (31) relative one side are provided with V face spacing groove.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011538322.3A CN112485023B (en) | 2020-12-23 | 2020-12-23 | Fatigue performance detection device for double-acting brake pump of automobile brake system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011538322.3A CN112485023B (en) | 2020-12-23 | 2020-12-23 | Fatigue performance detection device for double-acting brake pump of automobile brake system |
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| CN112485023A CN112485023A (en) | 2021-03-12 |
| CN112485023B true CN112485023B (en) | 2022-11-15 |
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Citations (4)
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|---|---|---|---|---|
| CN1447103A (en) * | 2003-03-20 | 2003-10-08 | 武汉理工大学 | Test bench for dispensing pumps of disk brake of motor |
| CN201903443U (en) * | 2010-07-27 | 2011-07-20 | 浙江中马汽车变速器股份有限公司 | Assembly structure of clutch release test bench |
| RO127042A2 (en) * | 2010-01-19 | 2012-01-30 | Inoe 2000 - Filiala Institutul De Cercetări Pentru Hidraulică Şi Pneumatică | Stand functioning on the principle of power recirculation for hydraulic cylinders endurance |
| CN211401658U (en) * | 2020-03-04 | 2020-09-01 | 安徽合力股份有限公司宝鸡合力叉车厂 | Fatigue test device for forklift brake cylinder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10233358B3 (en) * | 2002-07-23 | 2004-03-18 | Sms Meer Gmbh | Control method for pressure build-up using pressure intensifiers, especially for testing the pressure resistance of pipes |
-
2020
- 2020-12-23 CN CN202011538322.3A patent/CN112485023B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1447103A (en) * | 2003-03-20 | 2003-10-08 | 武汉理工大学 | Test bench for dispensing pumps of disk brake of motor |
| RO127042A2 (en) * | 2010-01-19 | 2012-01-30 | Inoe 2000 - Filiala Institutul De Cercetări Pentru Hidraulică Şi Pneumatică | Stand functioning on the principle of power recirculation for hydraulic cylinders endurance |
| CN201903443U (en) * | 2010-07-27 | 2011-07-20 | 浙江中马汽车变速器股份有限公司 | Assembly structure of clutch release test bench |
| CN211401658U (en) * | 2020-03-04 | 2020-09-01 | 安徽合力股份有限公司宝鸡合力叉车厂 | Fatigue test device for forklift brake cylinder |
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