CN208140364U - A kind of hydraulic motor retarder Work condition analogue testing stand - Google Patents
A kind of hydraulic motor retarder Work condition analogue testing stand Download PDFInfo
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- CN208140364U CN208140364U CN201820576493.7U CN201820576493U CN208140364U CN 208140364 U CN208140364 U CN 208140364U CN 201820576493 U CN201820576493 U CN 201820576493U CN 208140364 U CN208140364 U CN 208140364U
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Abstract
A kind of hydraulic motor retarder Work condition analogue testing stand, including subject hydraulic motor retarder, mounting base, mounting flange, accelerator, shaft coupling, torque sensor, loading device, mainframe, wherein：By the mounting flange and the mounting base tongue and groove fit, it is anchored on described in the mounting base by test specimen；It is described to be connected by power by test specimen output shaft and the gear wheel of the accelerator；The pinion gear of the accelerator is connected by power via shaft coupling I and described torque sensor one end；The loading device tries retarder, flying wheel and load oil pump including accompanying, wherein：The high speed shaft for accompanying examination retarder is Double shaft-extension, is connected by power respectively with the flying wheel and the load oil pump；The other end of the torque sensor is connected by power via shaft coupling II and the slow-speed shaft for accompanying examination retarder.The usefulness of the utility model is convenient for compact-sized, assembly and disassembly are adjusted, power of test is strong, has a wide range of application, Work condition analogue similarity height.
Description
Technical field
The utility model belongs to engineering machinery field, is related to a kind of hydraulic motor retarder Work condition analogue testing stand, especially
It is related to a kind of hydraulic motor retarder test stand that can simulate jib concrete pumping vehicle arm rack Turning course.
Background technique
Hydraulic motor retarder is the transmission device that hydraulic motor and retarder integrate, by hydraulic motor, with it is described hydraulic
The hydraulic control valve composition of the retarder and control that motor is connected the driving device for hydraulic motor rotation, the retarder are more
For multi-stage planetary gear speed reducer, the usually central gear with primary speed-down and meshed planetary gear and second level
The central gear of deceleration and meshed epicyclic gearing, the secondary planetary gear double as the retarder of driving device
Two row's ring gear of arranged concentric on shell, the secondary center gear are meshed with secondary planetary gear, the secondary planet tooth
Wheel is engaged with the internal gear of the reducer shell.Hydraulic motor retarder belongs to universal machine, and type, specification, model are numerous
It is more, have many uses too, is such as widely used in the upper-part rotation mechanism and walking mechanism of engineering machinery.
The height of hydraulic motor retarder working performance directly influences the reliability and service life (rich vibration of engineering goods
Guiding principle is write, and epicyclic transmission mechanism designs the Beijing：National Defense Industry Press, 1994).With the boom type in concrete works machinery
For concrete mixer, boom system is a many-degrees of freedom system being made of single oil cylinder multi link, between every joint arm
It folds and unfolds and is driven by the flexible of hydraulic cylinder, and the whole revolution of boom system is then driven by hydraulic motor retarder
It is dynamic.Due to factors such as the boom system is high by working frequency, operating condition severe, hydraulic control system working characteristics, operator's quality
It influences, so that the failures such as pump truck steel construction piece cracking, the damage of pivoting support gear tooth breakage, hydraulic motor retarder happen occasionally,
Wherein, because caused by the extreme inertia impact of cantilever crane swing mechanism cantilever crane shake and resonance be to lead to steel construction piece cracking, return
The main reason for turning the failures such as supporting gear broken teeth, retarder damage, has seriously affected operation process, has improved maintenance cost,
It even will increase the construction risk factor.As it can be seen that for engineering goods, especially for it is similar in big inertia impact, it is big
For length/overlength jib concrete pump truck under load and frequent start-stop this exceedingly odious working condition, hydraulic motor subtracts
Fast device is the critical component of the said goods, working performance (including energy consumption efficiency, service life, load character, abrasion develop rule
Rule etc.) high spot reviews and comprehensive assessment ought to be given in the jib concrete pump truck design selection stage.
For the ease of testing the working performance of hydraulic motor retarder, the design and manufacture producer of hydraulic motor retarder is general
The hydraulic motor retarder type approval test platform for being normally applied requirement for meeting universal machine is developed according to country or professional standard；
The type approval test platform mostly uses shaft coupling output power, and arrangement form has two kinds of a citation form and " back-to-back " formula, and with
The steady lower operation of load effect 2000 hours for judgment criteria (retarder loading device tests the Jiang-Han Area [J] petroleum science and technology, 2009,
19(2)：46-48).However, working condition is different, especially engineering machinery since hydraulic motor retarder application is different
Under site operation occasion when fully loaded revolution (more particularly long/overlength jib concrete pump truck get on the bus), because of its turn-around machine
Structure working environment is extremely severe, operating condition is extremely complicated (such as start and stop, braking and positive and negative rotation are frequent, start dead load and inertia force is big,
It is big etc. to export bearing force in radial) so that hydraulic motor retarder actual working conditions and above-mentioned conventional type approval test platform
Test environment differ greatly, cause the type approval test platform cannot be effectively reflected under actual working conditions (especially frequency
Under numerous start and stop, big inertia impact, big dead load) the real work performance of hydraulic motor retarder.From the point of view of to sum up, hydraulic motor subtracts
Fast device property test platform should be according to the structure type of tested retarder, technical performance, application places, working condition and survey
Examination demand carries out custom-made design.
As what infrastructure construction in china was put into continues to increase, the market demand rapid growth of construction machinery product,
Jib concrete pump truck market demand can sharply increase over 5 years especially past.However, hydraulic motor retarder workability
With the serious mismatch of working condition, can constrain construction machinery product scale economic production and a wide range of highly effective and safe
Using.In order to promote engineering machinery reliability, the sky of domestic and international hydraulic motor retarder Work condition analogue experimental technique is filled up
It is white, and meet the urgent need of the engineering machinery type approval test of hydraulic motor retarder and delivery test, those skilled in the art into
Unremitting effort is gone.Chinese patent (publication number：A kind of retarder test stand 202255874U) is disclosed, the testing stand is set
It sets on the rack, rotating disc is equipped on the testing stand, the rotating disc is arranged in the inside of rack, in the rotating disc
Top edge be toothed around, the gear teeth are meshed with the rack gear that rack side is arranged in, the rack gear by shell outside control
Device control processed.Chinese patent (publication number：A kind of retarder performance test stand 107655687A) is provided, including：Workbench, packet
Include horizontally disposed working face；Pressing device is fixed to the working face, and pressing device is provided with for by retarder pressure
The tightly hold-down head on working face；Driving device is fixed to the working face, and the driving end of driving device is used for and retarder
Input terminal connects and retarder is driven to rotate.Chinese patent (publication number：107764545A) provide a kind of going straight up to for electric feedback
Owner retarder multi-function test stand, including driving motor module etc., driving adjustable frequency motor pass through the first gearbox, shaft coupling band
Driven input shaft rotation, input shaft couples with by the input port of test specimen main reducing gear, by the output shaft and mould of testpieces main reducing gear
Intend the additional force loading module of main rotor axial force, radial force, moment of flexure by thrust bearing connection, in additional force loading module
Center position, main reducing gear output shaft couples with the lower end of top shafting to transmit torque and revolving speed, and upper axis fastens end
It is installed on the vertical input port of the second gearbox, the delivery outlet of the second gearbox is connected by output shaft with loading and frequency conversion motor,
Loading and frequency conversion motor generates electricity under the drive of input shaft as generator.Chinese patent (publication number：105954028A) disclose
A kind of vertical axis retarder test stand, including platform are fixedly installed tested vertical axis retarder on platform, and tested vertical axis subtracts
The input terminal of fast device is connected with driving motor, and pacifies between the input terminal of tested vertical axis retarder and the output end of driving motor
Equipped with first sensor, the output end of tested vertical axis retarder has connected up loading motor, and tested vertical axis retarder
Output end and loading motor output end between second sensor is installed, lifting platform is provided on platform, lifting platform passes through
Lift drive mechanism drive rises or falls, and driving motor is mounted on lifting platform.
Above-mentioned well-known technique is that the working performance of promotion hydraulic motor retarder contributes, but considers hydraulic motor
Retarder still cannot be promoted and applied directly in this field, especially directly in the special operation condition condition of engineering machinery field
For simulate length/overlength jib concrete pump truck swing mechanism complicated applying working condition (such as frequent start-stop, big inertia impact,
Big dead load etc.).Further, since engineering machinery manufactures and designs the technical restriction and secrecy of manufacturer, related construction machinery product is special
Hydraulic motor retarder Work condition analogue testing stand and its design method are there is not yet disclosing and reporting；Construction machinery product is dedicated
Hydraulic motor retarder Work condition analogue testing stand also without Related product sell circulate.
Summary of the invention
In view of the above shortcomings of the prior art, the utility model provides a kind of hydraulic motor retarder Work condition analogue
Testing stand.
A kind of hydraulic motor retarder Work condition analogue testing stand, including subject hydraulic motor retarder, mounting base, Method for Installation
Blue disk, accelerator, shaft coupling, torque sensor, loading device, mainframe, it is characterised in that：
The mounting flange is eight-sided formation, and outer edge, which is spaced apart, is equipped with tenon structure；Using be bolted by
The subject hydraulic motor retarder and the mounting flange consolidate；
The mounting base is octagonal framework structure, and eight inward flanges of the frame structure accordingly offer tongue-and-groove knot
Structure；Three frame of top of the frame structure is integrally formed the cover buckle of formula；Five frame framework of lower part is the Button Block of integral type；Institute
The one end for stating cover buckle is actively articulated on the Button Block by axis pin of the spring, and the other end of the cover buckle is connected through a screw thread
The cover buckle is anchored on the Button Block；It, will by the tongue and groove fit structure of the mounting flange and the mounting base
The subject hydraulic motor retarder is anchored in the mounting base；
The subject hydraulic motor retarder is installed on one end of the mainframe by the mounting base；
The accelerator is external gear pump pair；
The output shaft of the subject hydraulic motor retarder and big number of teeth gear (driving wheel) power of the accelerator
Connection；The small number of teeth gear (driven wheel) of the accelerator is connected by power via shaft coupling I and described torque sensor one end；
The mounting base bottom is provided with double-U-shaped sliding slot guide rail mechanism, and the external gear pump pair is adjusted by leadscrew-nut mechanism
Center away from；
The loading device tries retarder, flying wheel and load oil pump including accompanying, wherein：The high speed for accompanying examination retarder
Axis is Double shaft-extension, is connected by power respectively with the flying wheel and the load oil pump；The other end of the torque sensor via
Shaft coupling II is connected by power with the slow-speed shaft for accompanying examination retarder；
Preferably, two tongue-and-grooves open up on five frame of lower part and with horizontal plane are from mounting base
What upper surface opened up vertically downward.
Preferably, because hydraulic fluid leak causes to pollute ring when dismounting the subject hydraulic motor retarder in order to prevent
Border places on the mainframe side ground close to the subject hydraulic motor retarder and connects oil tray；It is described to connect oil tray position
In the lower section of the subject hydraulic motor retarder.
Preferably, the three-level parallel shaft (speed) reducer for accompanying examination retarder to use reversible operation.
Preferably, it is described load oil pump be can bidirectional movement electric ratio axial plunger oil pump.
More preferably, the oil inlet and outlet of the load oil pump is connected by electromagnetic relief valve with fuel tank respectively；Meanwhile institute
It states oil inlet and outlet and respectively and connects check valve and be connected again with slippage pump.
Preferably, flying wheel protective cover is arranged outside the flying wheel.
Preferably, the shaft coupling is sliding cross coupling.
Preferably, the flying wheel includes basic flying wheel, supplementary inertial wheel；Pass through the base in the basic flying wheel
It is superimposed the different supplementary inertial wheel of carry on plinth, obtains different equivalent moment of inertias.
The utility model is beneficial in that：The utility model provides a kind of hydraulic motor retarder for and guiding design
Work condition analogue testing stand, has that " compact-sized, assembly and disassembly adjust convenient, power of test strong (power is big, the moment of inertia is big), using model
Enclose that wide (equivalenting inertia torque is adjustable, revolving speed is adjustable, torque is adjustable, therefore is suitable for the hydraulic motor of multiple product line different models
Retarder testing requirement), the high (torque and radial force and actual condition of hydraulic motor reducer output shaft of Work condition analogue similarity
It is consistent), test it is accurate and reliable " the advantages that.
Detailed description of the invention
Fig. 1 is a kind of overall plan of hydraulic motor retarder Work condition analogue testing stand specific embodiment one of the utility model
Figure.
Fig. 2 is the three dimensional structure diagram of Fig. 1.
Fig. 3 is the three dimensional structure diagram when cover buckle of mounting base in Fig. 2 is opened close to extreme position.
Fig. 4 is the main view of Fig. 3.
Fig. 5 is the three dimensional structure diagram of mounting flange in Fig. 2.
Fig. 6 is the hydraulic loaded schematic illustration of loading device in Fig. 1.
Fig. 7 is the force analysis schematic diagram on hydraulic motor retarder in actual work output pinion.
Specific embodiment
It is practical new to this with reference to the accompanying drawings and detailed description in order to which the utility model is more clearly understood
Type is further described in detail.
Specific embodiment one.
Specific embodiment of the utility model one as shown in Figure 1 to Figure 7 shows the.
As shown in Figures 1 to 5, a kind of hydraulic motor retarder Work condition analogue testing stand, including subject hydraulic motor slow down
Device (101), mounting base (10), mounting flange (105), accelerator (20), shaft coupling, torque sensor (110), load dress
Set (30), mainframe (114), it is characterised in that：
As shown in figure 5, outputing pilot hole among mounting flange (105), the pilot hole surrounding uniformly opens up fastening spiral shell
Keyhole；
As shown in figure 3, subject hydraulic motor retarder (101) partially passes through the pilot hole of mounting flange (105)；
The fitting surface of subject hydraulic motor retarder (101) is stopped at the counterface of mounting flange (105), and and mounting flange
(105) counterface fits closely；Using bolt pass through the fastening bolt holes will be tested hydraulic motor retarder (101) with
Mounting flange (105) consolidation；Mounting flange (105) is eight-sided formation, and eight outer edges are opened at interval of a marginal edge
Equipped with a tenon structure (offering 4 tenon structures altogether as shown in Figure 3)；
The loading device (30) tries retarder, flying wheel and load oil pump including accompanying, wherein：Described accompany tries retarder
High speed shaft is Double shaft-extension, is connected by power respectively with the flying wheel and the load oil pump；The other end of the torque sensor
It is connected by power via shaft coupling II and the slow-speed shaft for accompanying examination retarder.
As shown in Figure 3 and Figure 4, mounting base (10) is octagonal framework structure, and eight inward flanges of the frame structure are equal
Tenon groove structure accordingly is offered, three frame of top of the frame structure is integrally formed the cover buckle (102) of formula；The frame knot
The five frame framework of lower part of structure is the Button Block (103) of integral type；One end of cover buckle (102) passes through axis pin of the spring as shown in Figure 3
(120) it is actively articulated on Button Block (103), the other end of cover buckle (102), which is connected through a screw thread, is anchored on cover buckle (102)
On Button Block (103)；By the octagon tongue and groove fit structure of mounting flange (105) and mounting base (10), will be tested hydraulic
Motor speed reducer (101) is convenient to be securely mounted in mounting base (10), while the subject hydraulic motor can be effectively prevented
The casing of retarder (101) relatively rotates (skidding) relative to the mounting base；In this example, in order to avoid interfering and being convenient for
Installation, it is further preferable that as shown in figure 3, two tongue-and-grooves open up on five frame of the lower part and with horizontal plane are
It is opened up vertically downward from the upper surface of mounting base (10)；
Subject hydraulic motor retarder (101) is installed on one end of mainframe (114) by mounting base (10)；
In this example, according to the performance range for the hydraulic motor retarder that existing jib concrete pump truck uses, accelerate dress
Set (20) can directly preferably a pair of open type external gear pump, without selecting huge speed increaser gear-box, so greatly
Ground simplifies the composition of experimental rig, reduces the laying bulk of experimental rig, reduces manufacturing cost.
As shown in Figure 1, the output shaft of subject hydraulic motor retarder (101) and the big number of teeth gear of accelerator (20)
(106), namely main (115) driving wheel is connected by power；The small number of teeth gear (107) of accelerator (20) namely the place of driven wheel
Axis is connected by power via shaft coupling I and torque sensor (110) one end；It is worth noting that when subject hydraulic motor retarder
(101) when itself is without braking function, the small number of teeth gear (107) of accelerator (20) passes through the brake apparatus being independently arranged again
It is connected by power via shaft coupling I and torque sensor (110) one end；
In this example, the lower part of the Button Block (103) of mounting base (10) offers double-U-shaped sliding groove structure, and tests with being fixedly arranged on
Guide rail (104) on rack (114) constitutes double-U-shaped sliding slot guide rail mechanism；Lead screw passes through the spiral shell being fixedly arranged on experimental stand (114)
Female (108) are connect with one end of mounting base (10)；The lead screw and nut (108) constitute leadscrew-nut mechanism；Mounting base
(10) be convenient to adjust by leadscrew-nut mechanism the center of the open type external gear pump pair away from.
The above-mentioned distinctive structure of mounting base designs (the hinged and screw fastening including octagonal framework structure, cover buckle and Button Block
Only, tenon groove structure, double-U-shaped sliding slot guide rail mechanism, leadscrew-nut mechanism), and cooperate unique mounting flange dish structure, so that by
The assembly and disassembly adjustment time of test solution pressure motor retarder is shortened dramatically compared with common form testing stand；Specific implementation practice further card
It is bright, the time is assembled and disassembled every time by test specimen no more than 2 minutes, greatly improves test efficiency；It is various sizes of by designing simultaneously
Mounting flange can satisfy the test demand of different model hydraulic motor retarder.
Loading device (30) tries retarder (112), flying wheel (113) and load oil pump (111) including accompanying, wherein：Accompany examination
The high speed shaft of retarder (112) is Double shaft-extension, wherein an axis stretches installation flying wheel (113), another axis is stretched and load oil pump (111)
It is connected by power；The other end of torque sensor (110) is moved via shaft coupling II (116) with the slow-speed shaft of examination retarder (112) is accompanied
Power connection；
Preferably, because hydraulic fluid leak causes to pollute ring when dismounting is tested hydraulic motor retarder (101) in order to prevent
Border places on mainframe (114) side ground close to subject hydraulic motor retarder (101) and connects oil tray, so that described connect
Oil tray is located at the lower section of subject hydraulic motor retarder (101).
Preferably, accompanying examination retarder (112) using the three-level parallel shaft (speed) reducer of reversible operation, this spline structure is the tightest
It gathers.ZQ type or NGW type gear reduction unit specifically can be selected in this example.
Preferably, load oil pump (111) in Fig. 1 and Fig. 2 select be it is as shown in FIG. 6 can bidirectional movement electric ratio
Axial plunger oil pump.
More preferably, the oil inlet and outlet of load oil pump (111) is connected with electromagnetic relief valve (121) respectively in Fig. 6, electricity
The overflow port of magnetic overflow valve (121) is connected with fuel tank again；Meanwhile the oil inlet and outlet respectively and connect check valve again with slippage pump
(122) it is connected；When load oil pump (111) operates in any direction, a hydraulic fluid port oil extraction of oil inlet and outlet, and pass through corresponding electricity
The overflow port of magnetic overflow valve (121) is to fuel tank overflow, to realize load function；Another hydraulic fluid port of oil inlet and outlet by slippage pump to
Fuel tank oil suction.
Preferably, as shown in Fig. 2, flying wheel protective cover (117) is arranged in flying wheel (113) outside；Flying wheel protective cover
(117) it is consolidated on mainframe (114).
Preferably, shaft coupling is sliding cross coupling.
Preferably, flying wheel (113) includes basic flying wheel, supplementary inertial wheel；By in the basic flying wheel
On the basis of the different supplementary inertial wheel of superposition carry, obtain different equivalent moment of inertias；In this example, the supplementary inertial wheel is deposited
In two dimension series, i.e. auxiliary thin-walled flying wheel and auxiliary heavy wall flying wheel.
A kind of hydraulic motor retarder Work condition analogue Test-bed Design method, it is characterized in that including the following steps：
Step 1：Operating condition equivalent analysis and calculating：According to the working principle of subject hydraulic motor retarder, assembly features, quilt
The output wheel and idle pulley load distribution characteristic of test solution pressure motor retarder, according to the torque of subject hydraulic motor reducer output shaft
The principle consistent with actual condition with radial force determines that the big number of teeth gear of external gear pump pair and subject hydraulic motor slow down
The radius ratio of the output gear of device.In this example, it is with hydraulic motor retarder with certain arm posture concrete mixer swing mechanism
Example carries out operating condition equivalent analysis and calculates.The type hydraulic motor retarder in actual use, hydraulic motor retarder
It is exported using the pinion gear of 15 teeth, dual-idle gear shunts transmission.As shown in fig. 7, when two idle pulleys are in 140 ° of distributions, and stress presses 0.6：
When 0.4 distribution, 0.39 times when resultant force is a pair of of gear drive, therefore determine the big number of teeth gear and quilt of open type external gear pump
The radius ratio of the output gear of test solution pressure motor retarder is 2.6；
Step 2：According to the radius ratio that previous step obtains, in conjunction with the number of teeth of the output gear of subject hydraulic motor retarder
It is 15, calculates the tooth number Z for obtaining the big number of teeth gear of open type external gear pump1It is 39.
Step 3：According to the needs that structure designs, the tooth number Z of the small number of teeth gear of open type external gear pump is selected2.This example
It is middle to be given as 24 according to design experiences.
Step 4：The calculating and type selecting of torque sensor (110) as shown in Figure 1：It is calculated by formula (1) and formula (2) and determines torque
Full test torque M on sensor1With ultimate torque Mmax：
Mmax=M1S (2)
In formula：η1For total transmission efficiency of accelerator as shown in Figure 1 (20) and shaft coupling I (115), is selected in this example and be
0.97；M is subject hydraulic motor retarder max. output torque, looks into product manual in this example and is determined as 16kNm；S is safety system
Number, this example take S=1.5.
By calculating, full test torque M1With ultimate torque MmaxRespectively 9551Nm and 14326.5Nm, therefore,
The torque sensor for selecting nominal torque l0000Nm, peak torque 15000Nm, can take into account surplus capacity and measurement accuracy.
Step 5：In order to enable the conversion of flying wheel (113) rotary inertia is defeated to subject hydraulic motor retarder as shown in Figure 2
Rotary inertia on shaft is consistent with actual condition, and equivalent analysis should be carried out to rotary inertia and is calculated, this step is divided into as follows
Step by step：
Step by step 5.1：Calculate total speed increasing ratio i of transmission system；In this example, the speed increasing ratio for accompanying examination retarder (112) of selection
(accompany examination retarder anticaustic, therefore referred to as speed increasing ratio) i1=60, then total speed increasing ratio of transmission system
Step by step 5.2：Calculate subject hydraulic motor retarder in actual work output gear (driving wheel) and pivoting support (from
Driving wheel) transmission ratio i0.In this example, as previously mentioned, the number of teeth of the output gear of subject hydraulic motor retarder is 15, it is assumed that real
The number of teeth that the pivoting support (driven wheel) used is engaged under the operating condition of border is 130, then calculates its transmission ratio i0=8.67.
Distribution 5.3：Estimation is tested hydraulic motor retarder institution where he works's totality maximum rotation inertia J in actual work0.This
In example, it is tested the upper-part rotation mechanism of hydraulic motor retarder Mr. Yu's arm posture concrete mixer；It can according to construction experience
Know, when the type pumping vehicle arm rack level is fully deployed and is in pumping state, institution where he works's totality maximum rotation inertia J0It takes most
Big value；Quality × matter of upper-part rotation mechanism is obtained in this example using mainstream commercialization three-dimensional modeling Design Software Pro/E Modeling Calculation
Heart position is 6800kg × 11.88m × 2.1, and rotating part weight is 7000kg after rounding, and the center of gravity radius of gyration is 12m, then always
Rotary inertia J0It is estimated as 1700000kg × m2。
Distribution 5.4：According to " the rotary inertia J of flying wheel, which is converted, is tested the output of hydraulic motor retarder into this testing stand
Equivalent moment of inertia on axis should be with institution where he works's totality maximum rotation inertia J in actual condition0It is consistent " principle, press
The rotary inertia J of formula (3) reverse flying wheel is 2.4kg × m2。
Step 6：According to the rotary inertia J of flying wheel, Inertia of design size of wheel, and obtain basic flying wheel and supplementary inertial
The rotary inertia of wheel；In this example, the rotary inertia of basic flying wheel, auxiliary thin-walled flying wheel and auxiliary heavy wall flying wheel is respectively
2.2,0.2 and 0.5kgm2；
Step 7：Energy consumption analysis：The machinery of hydraulic motor retarder Work condition analogue testing stand is calculated according to formula (4) and formula (5)
Efficiency etamAnd gross efficiency η：
In formula：P1For inlet pressure (MPa), P2For outlet pressure (MPa), M1Torque (Nm), ω are surveyed by driven shaft1
Output speed (rad/min)；Q1For inlet flow rate (L/min), Q2For rate of discharge (L/min).
The preferable concrete mode of the above, only the utility model, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, according to the utility model
Technical solution and its utility model conceive with equivalent substitution or change, should all cover the protection scope of the utility model it
It is interior.
Claims (9)
1. a kind of hydraulic motor retarder Work condition analogue testing stand, including subject hydraulic motor retarder, mounting base, mounting flange
Disk, accelerator, shaft coupling, torque sensor, loading device, mainframe, it is characterised in that：
The mounting flange is eight-sided formation, and outer edge, which is spaced apart, is equipped with tenon structure；It will be described using being bolted
It is tested hydraulic motor retarder and the mounting flange consolidates；
The mounting base is octagonal framework structure, and eight inward flanges of the frame structure accordingly offer tenon groove structure；
Three frame of top of the frame structure is integrally formed the cover buckle of formula；Five frame framework of lower part is the Button Block of integral type；It is described
One end of cover buckle is actively articulated on the Button Block by axis pin of the spring, the other end of the cover buckle be connected through a screw thread by
The cover buckle is anchored on the Button Block；By the tongue and groove fit structure of the mounting flange and the mounting base, by institute
Subject hydraulic motor retarder is stated to be anchored in the mounting base；
The subject hydraulic motor retarder is installed on one end of the mainframe by the mounting base；
The accelerator is external gear pump pair；
The output shaft of the subject hydraulic motor retarder is connect with the big number of teeth gear power of the accelerator；The acceleration
The small number of teeth gear of device is connected by power via shaft coupling I and described torque sensor one end；The mounting base bottom is provided with
Double-U-shaped sliding slot guide rail mechanism, by leadscrew-nut mechanism be adjusted the center of the external gear pump pair away from；
The loading device tries retarder, flying wheel and load oil pump including accompanying, wherein：It is described accompany examination retarder high speed shaft be
Double shaft-extension is connected by power with the flying wheel and the load oil pump respectively；The other end of the torque sensor is via shaft coupling
Device II is connected by power with the slow-speed shaft for accompanying examination retarder.
2. hydraulic motor retarder Work condition analogue testing stand according to claim 1, it is characterised in that：Five side of lower part
Two tongue-and-grooves open up on frame and with horizontal plane are opened up vertically downward from the upper surface of mounting base.
3. hydraulic motor retarder Work condition analogue testing stand according to claim 1, it is characterised in that：Close to the quilt
It is placed on the mainframe side ground of test solution pressure motor retarder and connects oil tray；The oil tray that connects is located at the hydraulic horse of subject
Up to the lower section of retarder.
4. hydraulic motor retarder Work condition analogue testing stand according to claim 1, it is characterised in that：Outside the flying wheel
Flying wheel protective cover is set.
5. hydraulic motor retarder Work condition analogue testing stand according to claim 1, it is characterised in that：The shaft coupling is
Sliding cross coupling.
6. hydraulic motor retarder Work condition analogue testing stand according to claim 1, it is characterised in that：The flying wheel packet
Include basic flying wheel, supplementary inertial wheel；By being superimposed carry different supplementary inertial wheel on the basis of the basic flying wheel,
Obtain different equivalent moment of inertias.
7. according to claim 1, hydraulic motor retarder Work condition analogue testing stand described in 2,3,4,5 or 6, it is characterised in that：
The three-level parallel shaft (speed) reducer for accompanying examination retarder to use reversible operation.
8. hydraulic motor retarder Work condition analogue testing stand according to claim 7, it is characterised in that：The load oil pump
For can bidirectional movement electric ratio axial plunger oil pump.
9. hydraulic motor retarder Work condition analogue testing stand according to claim 8, it is characterised in that：The load oil pump
Oil inlet and outlet be connected with fuel tank by electromagnetic relief valve respectively；Meanwhile the oil inlet and outlet respectively and connects check valve again
It is connected with slippage pump.
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| CN201820576493.7U CN208140364U (en) | 2018-04-23 | 2018-04-23 | A kind of hydraulic motor retarder Work condition analogue testing stand |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362496A (en) * | 2018-04-23 | 2018-08-03 | 湘潭大学 | A kind of hydraulic motor retarder Work condition analogue testing stand and its design method |
| CN110926804A (en) * | 2019-11-29 | 2020-03-27 | 北京工道风行智能技术有限公司 | Speed reducer evaluation device |
| CN111307445A (en) * | 2018-12-12 | 2020-06-19 | 东北林业大学 | Aerostatic spindle test bed based on accurate removal in X, Y direction |
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2018
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362496A (en) * | 2018-04-23 | 2018-08-03 | 湘潭大学 | A kind of hydraulic motor retarder Work condition analogue testing stand and its design method |
| CN111307445A (en) * | 2018-12-12 | 2020-06-19 | 东北林业大学 | Aerostatic spindle test bed based on accurate removal in X, Y direction |
| CN110926804A (en) * | 2019-11-29 | 2020-03-27 | 北京工道风行智能技术有限公司 | Speed reducer evaluation device |
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