CN107063717B - Performance detection device of forklift energy storage braking system - Google Patents
Performance detection device of forklift energy storage braking system Download PDFInfo
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- CN107063717B CN107063717B CN201710419272.9A CN201710419272A CN107063717B CN 107063717 B CN107063717 B CN 107063717B CN 201710419272 A CN201710419272 A CN 201710419272A CN 107063717 B CN107063717 B CN 107063717B
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses a performance detection device of a forklift energy storage braking system, which comprises an oil supply system and a power braking valve to be detected, wherein the power braking valve is respectively connected with an energy accumulator and a service brake through a hydraulic pipeline; the outlet end of the oil supply system is respectively connected with a power brake valve, an energy accumulator and a second pressure gauge through a four-way valve, and the energy accumulator is provided with a first pressure gauge for detecting the internal pressure of the energy accumulator; the braking ejector rod of the power braking valve is connected with the pressure rod through the pin shaft, and the braking action is realized by pushing the braking ejector rod of the power braking valve through the operation pressure rod; the service brake is mounted on a brake hub. The device can detect whether the accumulator, the power brake valve and the connecting hydraulic pipeline have the oil exposure phenomenon at the same time, can detect the internal leakage condition of the accumulator and the power brake valve, and can check whether the service brake has the clamping stagnation, the brake cylinder has the leakage and other faults.
Description
Technical Field
The invention relates to a forklift energy storage braking system, in particular to a performance detection device of the forklift energy storage braking system.
Background
The service brake system of the forklift is mainly used for decelerating in the running process of the forklift and controlling the running speed of the forklift in the downhill process. The safety of a forklift during travel is largely dependent on the reliability of the brake system. According to the tonnage difference of the forklift, the forklift service brake system below 3.5t mainly comprises a brake master cylinder, a brake and a brake pedal mechanism, when the brake pedal is stepped on, brake fluid in the master cylinder is sent to a left brake cylinder and a right brake cylinder through a brake oil pipe under the action of a piston to push the piston of the cylinder to move to two sides, so that a brake shoe is pushed to press a brake hub, and a braking effect is generated. And the 5-10t forklift is large in weight and long in braking distance, so that the safety is fully ensured, and an all-hydraulic power braking system is widely adopted at present, and mainly comprises a power braking valve, a service brake, an energy accumulator and a brake pedal mechanism. The system has the greatest advantages that: when the hydraulic pump is damaged or the engine is in flameout, the stored pressure oil supply system is used as emergency energy source by the energy accumulator, the system pressure is maintained for a period of time, the system is ensured to still implement emergency braking, the danger caused by braking failure when the oil source is suddenly interrupted is avoided, and the safety of the whole machine is ensured.
In view of the fact that the dynamic braking system has a plurality of parts, the matching of the parts performance and the reliability of the performances of the dynamic braking system are particularly important, and particularly, a dynamic braking valve and an energy accumulator serving as safety devices are key items for checking before loading, wherein whether the dynamic braking valve and the energy accumulator have phenomena of leakage, insufficient pressure building, retarded pressure building and the like or not. Therefore, a performance detection rack of the braking component is required to be established so as to realize the frequency test of the oil outlet pressure and the stable output pressure of the energy accumulator, the braking pressure test of the dynamic braking valve and the internal leakage judgment, thereby rejecting unqualified parts and improving the test run-through rate of the whole vehicle. In addition, the comprehensive analysis of unqualified parts is helpful to the technical improvement of products.
Disclosure of Invention
The invention aims to provide a performance detection device of a forklift energy storage braking system, which is used for testing the performances of an energy storage device, a power braking valve and a service brake in the forklift energy storage braking system, so that the performance detection device meets the requirements of vehicles.
The technical scheme of the invention is as follows:
the performance detection device of the forklift energy storage braking system comprises an oil supply system and a power braking valve to be detected, wherein the power braking valve is connected with an energy accumulator and a service brake through hydraulic pipelines respectively; the outlet end of the oil supply system is respectively connected with a power brake valve, an energy accumulator and a second pressure gauge through a four-way valve, and the energy accumulator is provided with a first pressure gauge for detecting the internal pressure of the energy accumulator; the braking ejector rod of the power braking valve is connected with the pressure rod through the pin shaft, and the braking action is realized by pushing the braking ejector rod of the power braking valve through the operation pressure rod; the service brake is mounted on a brake hub.
Further, the energy accumulator is provided with a pressure alarm.
The oil supply system comprises a hydraulic oil tank and a motor pump set, wherein the oil outlet end of the motor pump set is connected with the oil inlet of the four-way valve through an electromagnetic reversing valve and a one-way valve in sequence, and the oil inlet end of the one-way valve is connected with the hydraulic oil tank through a safety valve; an oil suction filter is arranged between the hydraulic oil tank and the motor pump set, and an oil return filter is arranged between the safety valve and the hydraulic oil tank.
Further, the energy accumulator is arranged on the underframe, and the power brake valve is fixedly arranged on the underframe through a brake valve mounting frame; the chassis is fixedly provided with a compression bar support, and the bottom end of the compression bar is connected to the compression bar support through a pin shaft.
In a further scheme, a sheath is sleeved at the top end of the compression bar.
Further, the top end of the oil storage tank is fixedly arranged on the service brake through the mounting bracket, the service brake is connected with the brake drum through a spline shaft, and the end part of the spline shaft is locked and fixed with a flange interlayer sleeve connected to the brake drum through a lock nut.
Further, the outer wall of the lock nut is symmetrically connected with a dowel bar in a threaded manner; and an observation hole for observing the service brake is axially formed in the brake drum.
Further, an oil inlet is formed in the top end of the oil storage tank, and an oil drain screw plug is arranged in the bottom end of the oil storage tank.
Further, the power brake valve is connected with the energy accumulator through a high-pressure rubber pipe, and the brake valve is connected with a brake cylinder of the service brake through a brake steel pipe.
The detection device of the invention has the following advantages:
1. the device can detect whether the accumulator, the power brake valve and the connecting hydraulic pipeline have the oil exposure phenomenon at the same time, can detect the internal leakage condition of the accumulator and the power brake valve, and can check whether the service brake has the clamping stagnation, the brake cylinder has the leakage and other faults.
2. The device is convenient to install and use by the test piece, and has high test efficiency; and the test parameters are complete, and the pressure and leakage conditions can be accurately mastered.
3. The pressure building condition of the energy accumulator is indicated through the first pressure gauge arranged on the energy accumulator, and the pressure building condition is also used for observing the relation between the braking times and the pressure release in the auxiliary braking process by the energy accumulator under the stop condition of the motor pump group of the system and judging the auxiliary braking performance of the energy accumulator.
4. The device is provided with the oil absorption filter between the hydraulic oil tank and the motor pump set to filter hydraulic oil, so that the cleanliness of the supplied pressure oil is ensured, hydraulic components such as a power brake valve, an energy accumulator and the like are prevented from being damaged due to oil pollution, and the detection precision is further influenced.
5. The working condition of stepping on a brake pedal on the whole vehicle is simulated by operating the pressure lever, so that a brake ejector rod of a power brake valve is pushed, and the braking working condition is realized; because the lever ratio of the pressure lever reaches 7.26, the braking action of the power brake valve can be easily controlled by manpower.
Drawings
FIG. 1 is a hydraulic schematic of the present invention;
FIG. 2 is a schematic diagram of the structure of the present invention;
FIG. 3 is a schematic illustration of the installation of an accumulator and dynamic brake valve of the present invention;
fig. 4 is a schematic installation view of a service brake in the present invention.
In the figure: the hydraulic oil tank, the 2-oil return filter, the 3-safety valve, the 4-energy accumulator, the 5-pressure alarm, the 6-first pressure gauge, the 7-power brake valve, the 8-oil suction filter, the 9-motor pump group, the 10-electromagnetic reversing valve, the 11-one-way valve, the 12-second pressure gauge, the 13-four-way valve, the 14-service brake, the 15-underframe, the 16-brake valve mounting frame, the 17-pressure rod bracket, the 18-pressure rod, the 19-sheath, the 20-oil storage tank, the 21-brake hub, the 22-mounting bracket, the 23-flange interlayer, the 24-dowel, the 25-lock nut, the 26-spline shaft, the 27-oil supply system, the 28-high-pressure rubber pipe and the 29-brake steel pipe.
Detailed Description
As shown in fig. 1-4, a performance detection device of a forklift energy storage braking system comprises an oil supply system 27 and a power braking valve 7 to be detected, wherein the power braking valve 7 is respectively connected with an energy accumulator 4 and a service brake 14 through hydraulic pipelines; the outlet end of the oil supply system 27 is respectively connected with the dynamic braking valve 7, the energy accumulator 4 and the second pressure gauge 12 through the four-way valve 13, and the energy accumulator 4 is provided with a first pressure gauge 6 for detecting the internal pressure of the energy accumulator; the brake ejector rod of the power brake valve 7 is connected with a pressure rod 18 through a pin shaft, and the brake ejector rod of the power brake valve 7 is pushed by operating the pressure rod 18 to realize braking action; the service brake 14 is mounted on a brake hub 21.
Further, the energy accumulator 4 is provided with a pressure alarm 5.
Further, as shown in fig. 1, the oil supply system 27 includes a hydraulic oil tank 1 and a motor pump set 9, wherein an oil outlet end of the motor pump set 9 is connected with an oil inlet of the four-way valve 13 sequentially through an electromagnetic directional valve 10 and a one-way valve 11, and an oil inlet end of the one-way valve 11 is connected with the hydraulic oil tank 1 through a safety valve 3; an oil suction filter 8 is arranged between the hydraulic oil tank 1 and the motor pump set 9, and an oil return filter 2 is arranged between the safety valve 3 and the hydraulic oil tank 1.
Further, as shown in fig. 3, the accumulator 4 is mounted on the underframe 15, and the dynamic brake valve 7 is fixedly arranged on the underframe 15 through a brake valve mounting frame 16; the chassis 15 is fixedly provided with a compression bar support 17, and the bottom end of the compression bar 18 is connected to the compression bar support 17 through a pin shaft.
Further, the top end of the compression bar 18 is sleeved with a sheath 19, and the sheath 19 made of rubber can improve operation comfort.
Further, as shown in fig. 4, the top end of the oil storage tank 20 is fixedly arranged on the service brake 14 through the mounting bracket 22, the service brake 14 is connected with the brake drum 21 through a spline shaft 26, and the end part of the spline shaft 26 is locked and fixed with a flange interlayer 23 connected with the brake drum 21 through a lock nut 25. The flange spline housing 23 is prevented from axially sliding with the brake hub 21.
Further, the outer wall of the lock nut 25 is symmetrically connected with a dowel bar 24 in a threaded manner; the brake drum 21 is provided with an observation hole for observing the service brake 14 in the axial direction. Observing the internal action of the service brake 14 through the observation hole, and checking whether the service brake 14 has faults such as clamping stagnation, leakage of a brake cylinder and the like;
because the lock nut 25 is larger in size, in order to realize smooth locking, symmetrical threaded holes are machined in the outer wall of the lock nut 25, the dowel bar 24 is installed, the lock nut 25 can be screwed or unscrewed by operating the dowel bar 24, and manual disassembly of an operator is facilitated.
Further, an oil inlet is formed in the top end of the oil storage tank 20, and an oil drain plug is arranged in the bottom end of the oil storage tank.
Further, the power brake valve 7 is connected with the accumulator 4 through a high-pressure rubber pipe 28, and the brake valve 7 is connected with a brake cylinder of the service brake 14 through a brake steel pipe 29.
The oil supply system 27 is used for two-stage system pressure setting so as to meet the testing requirements of accumulators and brake valves with different pressure levels, and the system pressure does not need to be adjusted temporarily.
The accumulator 4 is used for storing pressure oil and implementing emergency braking in case of sudden failure.
The pressure alarm 5 is used for simulating the pressure alarm function of the whole vehicle, and provides the alarm function when the pressure inside the accumulator 4 is built up to the standard.
The first pressure gauge 6 is used for indicating the pressure building condition of the accumulator 4, and is also used for observing the relation between the braking times and the pressure release in the auxiliary braking process by using the accumulator 4 under the stop condition of the system motor pump group 9, so as to judge the auxiliary braking performance of the accumulator. The second pressure gauge 12 is used for indicating the system pressure, the four-way valve 13 is used for shunting an oil way, and the service brake is used for simulating the service braking working condition of the whole vehicle.
The dynamic brake valve 7 is used as a front loading brake test piece and used for simulating the dynamic braking action of the whole car, and simultaneously detecting the braking pressure and internal leakage of the brake valve to ensure that the loading brake valve is a qualified product.
The oil suction filter 8 is used for filtering system hydraulic oil, guaranteeing the cleanliness of the supplied pressure oil, and preventing damage to the hydraulic components such as the power brake valve 7, the energy accumulator 4 and the like due to oil pollution, thereby affecting the detection precision.
The motor pump group 9 is composed of a motor and a hydraulic pump and is used for providing pressure oil for the system;
the electromagnetic directional valve 10 is used for controlling the flow direction of system pressure oil and realizing the pressure setting of a two-stage system. The one-way valve 11 acts to prevent backflow of pressurized oil for pressure maintenance of the system in the event of a shutdown of the motor pump unit 9.
The chassis 15 is structured to simulate the mounting of the accumulator 4 on the whole vehicle, while its whole is mounted on the platform of the hydraulic pump station through the through holes of its bottom plate. The compression bar support 17 is connected with the underframe 15 through a screw, the bottom end part of the compression bar 18 is connected with the compression bar support 17 through a pin shaft, and the compression bar 18 is connected with a brake ejector rod of the power brake valve 7 through a pin shaft. The working condition of stepping on a brake pedal on the whole vehicle is simulated by operating the pressure lever 18, and a brake ejector rod of the power brake valve 7 is pushed to realize the braking working condition; since the lever ratio of the pressure lever 18 reaches 7.26, the braking action of the dynamic braking valve 7 can be easily operated by manpower.
The oil storage tank 20 is designed into a tank body structure, and the lower part of the oil storage tank is provided with an oil drain screw plug. In the actual test process, if oil leakage occurs at the connecting part of the brake steel pipe 29 or the brake cylinder of the service brake 14, the leaked oil can directly flow into the oil storage tank 20, so that recovery is realized, and oil pollution is prevented. In addition, the oil storage tank 20 is simultaneously used for supporting a mounting bracket 22 for mounting the service brake 14 and the brake hub 21, the service brake 14 and the brake hub 21 simulate the actual assembly mode of the whole vehicle, and a brake slave cylinder of the service brake 14 is connected with a brake output Br port of the dynamic brake valve 7 through a brake steel pipe 29 to realize a braking function and assist in detecting the pressure establishment and leakage condition of the dynamic brake valve 7.
The specific detection process of the detection device is as follows:
(1) According to the detection requirement, a tested power brake valve 7, an accumulator 4 and a service brake 14 are installed;
(2) A hydraulic pipeline connecting the dynamic braking valve 7 with the accumulator 4 and the service brake 14;
(3) Starting the motor pump group 9, wherein the electromagnetic directional valve 10 does not act at the moment, and hydraulic oil directly flows back to a hydraulic oil tank through the middle position of the electromagnetic directional valve 10;
(4) The electromagnetic directional valve 10 is started, at the moment, hydraulic oil sequentially passes through the check valve 11 and the four-way valve 13 through the working position of the electromagnetic directional valve 10, enters the P port of the dynamic braking valve 7, and then flows back into the hydraulic oil tank 1 through the N port of the dynamic braking valve;
(5) The continuous braking action is implemented through the pressure lever 18, hydraulic oil sequentially enters the accumulator 4 from the P port of the accumulator 4 through the one-way valve 11 and the four-way valve 13 for pressurizing, and the hydraulic oil is pressurized to a specified value by observing the first pressure gauge 6; simultaneously, hydraulic oil enters the service brake 14 to brake; accordingly, the occurrence of oil-free leakage at the joints of the accumulator 4, the power brake valve 7 and the hydraulic pipelines of the system can be checked, if the fastening treatment is performed in time, the braking action is repeated after the treatment, and the accumulator 4 reaches the appointed charging value by observing the first pressure gauge 6;
(6) After the motor pump group 9 stops working, continuous braking action is implemented through the compression bar 18, and hydraulic oil in the energy accumulator 4 enters the service brake 14 through the dynamic brake valve 7 to brake; the pressure drop condition of the accumulator 4 is observed through the first pressure gauge 6, the pressure drop condition is compared with a set value, whether the dynamic brake valve 7 has obvious internal leakage or not is judged, if the pressure drop value of 1 minute is smaller than the set value, the dynamic brake valve 7 is proved to have no obvious internal leakage, otherwise, the dynamic brake valve 7 is disqualified; maintaining the pressure for 10 minutes, observing the value of the pressure drop, comparing the value with a set value, if the total pressure drop value is smaller than the set value of the pressure drop for 10 minutes, judging that the total internal leakage of the dynamic braking valve 7 reaches the standard, otherwise, judging that the dynamic braking valve 7 is unqualified;
(7) If the total internal leakage of the dynamic brake valve 7 reaches the standard, the motor pump set 9 is started, and the brake action is implemented by utilizing the compression bar 18, so that the accumulator 4 is pressurized to a specified value; then closing the motor pump group 9, utilizing the compression bar 18 to implement braking action, continuously braking for five times, observing a pressure release value through the first pressure gauge 6, comparing the pressure release value with a set value, and if the pressure drop value for 5 times is in a set qualified value range, judging that the accumulator 4 is qualified, otherwise judging that the accumulator 4 is unqualified;
(8) During braking, through the observation holes on the surface of the brake hub 21, the internal action of the service brake 14 is observed, and whether the service brake 14 has faults such as clamping stagnation, leakage of a brake cylinder and the like is checked;
(9) After the detection is completed, the tested piece is disassembled, and loading is implemented.
The above embodiments are not limited to the scope of the present invention, and all modifications or variations based on the basic idea of the present invention are within the scope of the present invention.
Claims (6)
1. The performance detection device of the forklift energy storage braking system comprises an oil supply system (27) and a power braking valve (7) to be detected, wherein the power braking valve (7) is connected with an energy accumulator (4) and a service brake (14) through hydraulic pipelines respectively; the method is characterized in that: the outlet end of the oil supply system (27) is respectively connected with the power brake valve (7), the energy accumulator (4) and the second pressure gauge (12) through the four-way valve (13), and the energy accumulator (4) is provided with a first pressure gauge (6) for detecting the internal pressure of the energy accumulator; the braking ejector rod of the power braking valve (7) is connected with a pressing rod (18) through a pin shaft, and the braking ejector rod of the power braking valve (7) is pushed by operating the pressing rod (18) to realize braking action; the service brake (14) is mounted on a brake hub (21);
the oil supply system (27) comprises a hydraulic oil tank (1) and a motor pump set (9), wherein the oil outlet end of the motor pump set (9) is connected with the oil inlet of the four-way valve (13) through an electromagnetic reversing valve (10) and a one-way valve (11) in sequence, and the oil inlet end of the one-way valve (11) is connected with the hydraulic oil tank (1) through a safety valve (3);
the energy accumulator (4) is arranged on the underframe (15), and the power brake valve (7) is fixedly arranged on the underframe (15) through a brake valve mounting frame (16); a compression bar bracket (17) is fixedly arranged on the underframe (15), and the bottom end of the compression bar (18) is connected to the compression bar bracket (17) through a pin shaft;
the service brake (14) is fixedly arranged at the top end of the oil storage tank (20) through a mounting bracket (22), the service brake (14) is connected with the brake hub (21) through a spline shaft (26), and the end part of the spline shaft (26) is locked and fixed with a flange interlayer (23) connected to the brake hub (21) through a locking nut (25); the outer wall of the lock nut (25) is symmetrically connected with a dowel bar (24) in a threaded manner; an observation hole for observing the service brake (14) is axially formed in the brake hub (21);
the detection steps of the performance detection device are as follows:
s1, installing a tested power brake valve (7), an energy accumulator (4) and a service brake (14) according to detection requirements;
s2, a hydraulic pipeline is connected between the power brake valve (7) and the accumulator (4) and between the power brake valve and the service brake (14);
s3, starting a motor pump set (9), wherein the electromagnetic directional valve (10) does not act at the moment, and hydraulic oil directly flows back to a hydraulic oil tank through the middle position of the electromagnetic directional valve (10);
s4, starting an electromagnetic directional valve (10), wherein hydraulic oil sequentially passes through a check valve (11) and a four-way valve (13) through the working position of the electromagnetic directional valve (10), enters a P port of a dynamic braking valve (7), and then flows back into a hydraulic oil tank (1) through an N port of the dynamic braking valve;
s5, implementing continuous braking action through a pressure lever (18), enabling hydraulic oil to enter the energy accumulator (4) from a P port of the energy accumulator (4) through the one-way valve (11), the four-way valve (13) and the four-way valve in sequence to be pressurized, and observing the first pressure gauge (6) to enable the hydraulic oil to be pressurized to a specified value; simultaneously, hydraulic oil enters a service brake (14) to brake; accordingly, the occurrence of oil-free leakage at the joints of the accumulator (4), the power brake valve (7) and the hydraulic pipelines of the system can be checked, if the fastening treatment is performed in time, the braking action is repeated after the treatment, and the accumulator (4) reaches the appointed charging value by observing the first pressure gauge (6);
s6, after the motor pump set (9) stops working, continuous braking action is implemented through the pressure lever (18), and hydraulic oil in the energy accumulator (4) enters the service brake (14) through the dynamic brake valve (7) to brake; the pressure drop condition of the accumulator (4) is observed through the first pressure gauge (6), the pressure drop condition is compared with a set value, whether the dynamic braking valve (7) has obvious internal leakage or not is judged, if the pressure drop value of 1 minute is smaller than the set value, the dynamic braking valve (7) has no obvious internal leakage, otherwise, the dynamic braking valve is disqualified; then maintaining the pressure for 10 minutes, observing the value of the pressure drop, comparing the value with a set value, if the total pressure drop value is smaller than the set value of the pressure drop for 10 minutes, judging that the total internal leakage of the power brake valve (7) reaches the standard, otherwise, judging that the power brake valve (7) is unqualified;
s7, if the total internal leakage of the dynamic brake valve (7) reaches the standard, starting a motor pump set (9), and using a compression bar (18) to implement braking action to charge the accumulator (4) to a specified value; then closing the motor pump group (9), utilizing the pressure lever (18) to apply braking action, continuously braking for five times, observing a pressure release value through the first pressure gauge (6), comparing the pressure release value with a set value, and if the pressure drop value for 5 times is in a set qualified value range, judging that the accumulator (4) is qualified, otherwise, judging that the accumulator (4) is unqualified;
s8, in the braking process, observing the internal action of the service brake (14) through an observation hole on the surface of the brake hub (21), and checking whether the service brake (14) has clamping stagnation and a brake cylinder has leakage faults or not;
and S9, after the detection is completed, the tested piece is disassembled, and loading is implemented.
2. The performance detection device of a forklift energy storage braking system according to claim 1, wherein: the energy accumulator (4) is provided with a pressure alarm (5).
3. The performance detection device of a forklift energy storage braking system according to claim 1, wherein: an oil suction filter (8) is arranged between the hydraulic oil tank (1) and the motor pump set (9), and an oil return filter (2) is arranged between the safety valve (3) and the hydraulic oil tank (1).
4. The performance detection device of a forklift energy storage braking system according to claim 1, wherein: the top end of the compression bar (18) is sleeved with a sheath (19).
5. The performance detection device of a forklift energy storage braking system according to claim 1, wherein: an oil inlet is formed in the top end of the oil storage tank (20), and an oil drain screw plug is arranged at the bottom end of the oil storage tank.
6. The performance detection device of a forklift energy storage braking system according to claim 1, wherein: the dynamic braking valve (7) is connected with the accumulator (4) through a high-pressure rubber pipe (28), and the dynamic braking valve (7) is connected with a braking cylinder of the service brake (14) through a braking steel pipe (29).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710419272.9A CN107063717B (en) | 2017-06-06 | 2017-06-06 | Performance detection device of forklift energy storage braking system |
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| CN201710419272.9A CN107063717B (en) | 2017-06-06 | 2017-06-06 | Performance detection device of forklift energy storage braking system |
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| CN107063717B true CN107063717B (en) | 2023-08-04 |
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| CN107941501B (en) * | 2017-12-25 | 2024-04-09 | 芜湖盛力科技股份有限公司 | Reliability test system and method for accumulator charge valve |
| CN115266137A (en) * | 2022-07-28 | 2022-11-01 | 中国第一汽车股份有限公司 | Test system and test method applied to integrated brake system |
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