CN102367788A - Staggered phase parallel combined plunger-type hydraulic pump - Google Patents

Abstract

The invention discloses a staggered phase parallel combined plunger-type hydraulic pump which comprises M plunger pumps, 2M-2 synchronous belt wheels of the same structure, M-1 synchronous belts of the same structure, M-1 tension pulleys (14) of the same structure, 2M-2 expansion coupling sleeves (15) of the same structure and a servo motor (18), wherein M is a natural number which is greater than or equal to 2; the M plunger pumps are installed on a parallel combined pump installation plate, thus rotation axes of the plunger pumps are parallel mutually and are in the same horizontal plane; each of the M plunger pumps, except for the plunger pumps at two ends, are provided with two synchronous belt wheels of the same structure; the synchronous belt wheels on two adjacent plunger pumps are connected by adopting synchronous belts of the same structure; oil inlets and oil pressing ports of the M plunger pumps are connected respectively by pipelines; the output end of one plunger pump is connected with the servo motor (18); and a plunger of one plunger pump in the two adjacent plunger pumps has a staggered phase angle beta relative to a plunger of the previous plunger pump.

Description

Misphase position parallel connection combined plunger formula oil hydraulic pump

Technical field

The present invention relates to a kind of combination hydraulic pump that is applied to the mechanical engineering hydraulic transmission technology field, or rather, the present invention relates to a kind of misphase position parallel connection combined plunger formula oil hydraulic pump.

Background technique

Pluger type hydraulic pump (abbreviating plunger pump as), it is the to-and-fro motion that relies on plunger, the volume in the change plunger case sucks the pump with drain.The form of plunger pump is a lot, and the arrangement of pressing plunger is different with moving direction, can be divided into radial plunger pump and axial piston pump.Plunger pump becomes the important motivity element in the hydraulic transmission because of having advantages such as parameter height, efficient is high, the life-span is long, variable is convenient.Be widely used in high pressure, big flow, the powerful system and occasion that flow need be regulated, be widely used like double column planing machine, broaching machine, hydraulic press, engineering machinery, Aero-Space, precision optical machinery etc.According to the flow theory of plunger pump, all there is flow pulsation bar none in the plunger pump of any structure pattern, and promptly the instantaneous output flow of plunger pump is cyclically-varying.The odd number plunger pump is much littler than the even number plunger pumping flow pulsation that it closes on, and along with the increase of plunger number but flow pulsation reduce.Flow pulsation in the hydraulic system must cause pressure pulsation, thus can cause that each element periodically vibrates in the whole hydraulic system, creep, noise, even damage.In order to reduce pulsation, traditional oil hydraulic pump often adopts the odd number plunger pump, and adopt to increase accumulator and use measures such as flexible pipe, and these measures can only be eliminated the part pulsation, but can't the quantitative Analysis pulsation reduce value; The method that adopts oil hydraulic pump to increase the plunger number is also arranged, but limit by structure, the plunger number is difficult to too many and stepless, can't reduce flow system flow pulsation and pressure pulsation that oil hydraulic pump causes significantly.

Summary of the invention

Technical problem to be solved by this invention is to have overcome the flow system flow pulsation that existing oil hydraulic pump causes and the problem of pressure pulsation, and a kind of misphase position parallelly connected combined plunger formula oil hydraulic pump is provided.

For solving the problems of the technologies described above; The present invention adopts following technological scheme to realize: a kind of misphase position parallel connection combined plunger formula oil hydraulic pump; Described misphase position parallel connection combined plunger formula oil hydraulic pump comprise No. 1 axial piston pump, No. 2 axial piston pumps, No. 3 axial piston pumps ..., M-1 axial piston pump, M axial piston pump, No. 1 output synchronous pulley, No. 2 input synchronous pulleys, No. 2 output synchronous pulleys, No. 3 input synchronous pulleys, No. 3 output synchronous pulleys, No. 4 input synchronous pulleys, No. 4 output synchronous pulleys, No. 5 input synchronous pulleys ..., M-1 number input synchronous pulley, M-1 number output synchronous pulley, M number input synchronous pulley, synchronously band, 2 to No. 3 synchronously band, 3 to No. 4 synchronously band ... with M-1 to M number band, identical swelling connecting sleeve and the servomotor of Idle wheel, a 2M-2 structure that a M-1 structure is identical synchronously, wherein M is the natural number more than or equal to 2.

No. 1 axial piston pump, No. 2 axial piston pumps, No. 3 axial piston pumps ..., the M-1 axial piston pump is installed on the parallelly connected unipump mounting plate that is in vertical position with the M axial piston pump through bolt; No. 1 axial piston pump, No. 2 axial piston pumps, No. 3 axial piston pumps ..., the rotational axis of M-1 axial piston pump and M axial piston pump is parallel to each other and locate in the same horizontal plane, No. 1 axial piston pump, No. 2 axial piston pumps, No. 3 axial piston pumps ..., No. 1 transmission shaft in M-1 axial piston pump and the M axial piston pump, No. 2 transmission shafts, No. 3 transmission shafts ..., the input end of M-1 transmission shaft and M transmission shaft is positioned at the right side.No. 1 the output synchronous pulley is fixedly mounted on the input end of No. 1 transmission shaft through the identical swelling connecting sleeve of structure; No. 2 the input synchronous pulley is fixedly mounted on the input end of No. 2 transmission shafts through 2 identical swelling connecting sleeves of structure with No. 2 output synchronous pulleys; No. 3 the input synchronous pulley is fixedly mounted on the input end of No. 3 transmission shafts through 2 identical swelling connecting sleeves of structure with No. 3 output synchronous pulleys; No. 4 the input synchronous pulley is fixedly mounted on the input end of No. 4 transmission shafts through 2 identical swelling connecting sleeves of structure with No. 4 output synchronous pulleys; ...; M-1 number the input synchronous pulley is fixedly mounted on the input end of M-1 transmission shaft through 2 identical swelling connecting sleeves of structure with M-1 number output synchronous pulley, and M number the input synchronous pulley is fixedly mounted on the input end of M transmission shaft through the identical swelling connecting sleeve of structure.No. 1 the output synchronous pulley is connected through being with synchronously with No. 2 input synchronous pulleys; No. 2 output synchronous pulleys are with synchronously through 2 to No. 3 with No. 3 input synchronous pulleys and are connected; No. 3 output synchronous pulleys are with synchronously through 3 to No. 4 with No. 4 input synchronous pulleys and are connected; No. 4 the output synchronous pulleys are connected through 4 to No. 5 synchronous bands with No. 5 input synchronous pulleys ..., M-1 number output synchronous pulley is with synchronously through M-1 to M number with M number input synchronous pulley and is connected.Synchronously band, 2 to No. 3 synchronously band, 3 to No. 4 synchronously band ... with M-1 to M number synchronously the outside of band an identical Idle wheel of structure be installed connected for contact.No. 1 axial piston pump, No. 2 axial piston pumps, No. 3 axial piston pumps ..., the M-1 axial piston pump adopts pipeline to be connected with axial fuel inlet mouth in the M axial piston pump and is connected with fuel tank, No. 1 axial piston pump, No. 2 axial piston pumps, No. 3 axial piston pumps ..., the M-1 axial piston pump is connected with axial pressure hydraulic fluid port employing pipeline in the M axial piston pump and be connected with hydraulic system.The input end of No. 1 transmission shaft of No. 1 axial piston pump or the M transmission shaft of M axial piston pump connects servomotor through coupling; Axial plunger on the pump housing of a back axial piston pump of adjacent two axial piston pumps from No. 1 axial piston pump to M axial piston pump is 1 misphase parallactic angle β with respect to the axial plunger on the pump housing of previous axial piston pump

The unit of misphase parallactic angle β in

formula is a radian

If by angle calculation, following formula is expressed as

No. 1 axial piston pump described in the technological scheme, No. 2 axial piston pumps, No. 3 axial piston pumps ..., the M-1 axial piston pump is identical with M axial plunger pump structure.No. 1 output synchronous pulley, No. 2 input synchronous pulleys, No. 2 output synchronous pulleys, No. 3 input synchronous pulleys, No. 3 output synchronous pulleys, No. 4 input synchronous pulleys, No. 4 output synchronous pulleys, No. 5 input synchronous pulleys ..., M-1 number output synchronous pulley is with to import the synchronous pulley structure M number identical.Synchronously band, 2 to No. 3 synchronously band, 3 to No. 4 synchronously band ... identical with M-1 to M number synchronous band structure.

A kind of misphase position parallel connection combined plunger formula oil hydraulic pump; Described misphase position parallel connection combined plunger formula oil hydraulic pump comprise No. 1 radial plunger pump, No. 2 radial plunger pumps, No. 3 radial plunger pumps ..., M-1 radial plunger pump, M radial plunger pump, radially export synchronous pulley for No. 1, radially import synchronous pulley for No. 2, radially export synchronous pulley for No. 2, radially import synchronous pulley for No. 3, radially export synchronous pulley for No. 3, radially import synchronous pulley for No. 4, radially export synchronous pulley for No. 4, radially import synchronous pulley for No. 5 ..., M-1 number radially import synchronous pulley, M-1 number radially export synchronous pulley, M number radially import synchronous pulley, radially synchronously band, 2 to No. 3 radially synchronously band, 3 to No. 4 radially synchronously band ... with M-1 to M number radially band, identical swelling connecting sleeve and the servomotor of Idle wheel, a 2M-2 structure that a M-1 structure is identical synchronously, wherein M is the natural number more than or equal to 2.

No. 1 radial plunger pump, No. 2 radial plunger pumps, No. 3 radial plunger pumps ..., the M-1 radial plunger pump is installed on the parallelly connected combined radial pump mounting plate that is in vertical position with the M radial plunger pump through bolt; No. 1 radial plunger pump, No. 2 radial plunger pumps, No. 3 radial plunger pumps ..., the rotational axis of M-1 radial plunger pump and M radial plunger pump is parallel to each other and locate in the same horizontal plane, No. 1 radial plunger pump, No. 2 radial plunger pumps, No. 3 radial plunger pumps ..., in M-1 radial plunger pump and the M radial plunger pump No. 1 radially transmission shaft, No. 2 radially transmission shaft, No. 3 radially transmission shaft ..., M-1 number radially transmission shaft and M number radially the input end of transmission shaft be positioned at the right side.Radially export synchronous pulley for No. 1 and be fixedly mounted on No. 1 radially on the input end of transmission shaft through the identical swelling connecting sleeve of structure; Radially import synchronous pulley for No. 2 and radially export synchronous pulley for No. 2 and be fixedly mounted on No. 2 radially on the input end of transmission shaft through 2 identical swelling connecting sleeves of structure; Radially import synchronous pulley for No. 3 and radially export synchronous pulley for No. 3 and be fixedly mounted on No. 3 radially on the input end of transmission shaft through 2 identical swelling connecting sleeves of structure; Radially import synchronous pulley for No. 4 and radially export synchronous pulley for No. 4 and be fixedly mounted on No. 4 radially on the input end of transmission shaft through 2 identical swelling connecting sleeves of structure; ...; Radially import synchronous pulley for M-1 number and be fixedly mounted on M-1 number radially on the input end of transmission shaft through 2 identical swelling connecting sleeves of structure, radially import synchronous pulley for M number and be fixedly mounted on M number radially on the input end of transmission shaft through the identical swelling connecting sleeve of structure with radially exporting synchronous pulley for M-1 number.Radially export for No. 1 synchronous pulley with radially import for No. 2 synchronous pulley through radially synchronously band be connected; Radially export for No. 2 synchronous pulley with radially import for No. 3 synchronous pulley through 2 to No. 3 radially synchronously band be connected; Radially export for No. 3 synchronous pulley with radially import for No. 4 synchronous pulley through 3 to No. 4 radially synchronously band be connected; Radially export for No. 4 synchronous pulley with radially import for No. 5 synchronous pulley through 4 to No. 5 radially synchronously band be connected; ..., radially export for M-1 number synchronous pulley with radially import for M number synchronous pulley through M-1 to M number radially synchronously band be connected.Radially synchronously band, 2 to No. 3 radially synchronously band, 3 to No. 4 radially synchronously band ... with M-1 to M number radially synchronously the outside of band an identical Idle wheel of structure be installed connected for contact.No. 1 radial plunger pump, No. 2 radial plunger pumps, No. 3 radial plunger pumps ..., the M-1 radial plunger pump adopts pipeline to be connected with radially filler opening in the M radial plunger pump and is connected with fuel tank, No. 1 radial plunger pump, No. 2 radial plunger pumps, No. 3 radial plunger pumps ..., the M-1 radial plunger pump is connected with radially pressure hydraulic fluid port employing pipeline in the M radial plunger pump and be connected with hydraulic system.No. 1 of No. 1 radial plunger pump radially transmission shaft or M radial plunger pump M number radially the input end of transmission shaft connect servomotor through coupling.From No. 1 radially the radial plunger on the pump housing of a back radial plunger pump of adjacent two radial plunger pumps transmission shaft to the M radial plunger pump be 1 misphase parallactic angle β with respect to the radial plunger on the pump housing of previous radial plunger pump,

The unit of misphase parallactic angle β in

formula is a radian

If by angle calculation, following formula is expressed as

No. 1 radial plunger pump described in the technological scheme, No. 2 radial plunger pumps, No. 3 radial plunger pumps ..., the M-1 radial plunger pump is identical with M radial plunger pump structure.Radially export synchronous pulley for No. 1, radially import synchronous pulley for No. 2, radially export synchronous pulley for No. 2, radially import synchronous pulley for No. 3, radially export synchronous pulley for No. 3, radially import synchronous pulley for No. 4, radially export synchronous pulley for No. 4, radially import synchronous pulley for No. 5 ..., M-1 number imports radially that synchronous pulley, M-1 number are radially exported synchronous pulley and radially to import the synchronous pulley structure M number identical.Radially synchronously band, 2 to No. 3 radially synchronously band, 3 to No. 4 radially synchronously band ... radially synchronously band structure is identical with M-1 to M number.

Compared with prior art the invention has the beneficial effects as follows:

1. misphase of the present invention position parallel connection combined plunger formula oil hydraulic pump adopts specifications and models, performance parameter, plunger pump parallel connection that the plunger number is identical; A phase beta interlaces when through the deflection angle that changes parallelly connected adjacent two plunger pumps adjacent two plunger pumps being exported; β=2 π/(MZ), wherein: Z is the plunger number of single pump, and M is the plunger pump number; This moment specified output flow be single pump flow M doubly, flow pulse rate is about the 1/M of single pump ²

2. misphase of the present invention position parallel connection combined plunger formula oil hydraulic pump is given the hydraulic system fuel feeding simultaneously, does not need specialized designs to make the multicolumn piston hydraulic pump, promptly can reduce pulsation in the time of augmented flow, improves hydraulic work system performance and stability.

3. the transmission of misphase of the present invention position parallel connection combined plunger formula oil hydraulic pump does not need special-purpose driving mechanism; Each identical synchronous pulley of Dimensions that is installed on each plunger pump input shaft is linked together through synchronous band, make synchronous, the equidirectional rotation of each plunger pump of parallel connection with simultaneously to the hydraulic system fuel feeding.

Description of drawings

Below in conjunction with accompanying drawing the present invention is further described:

Fig. 1 is that to adopt the axial plunger type hydraulic pump to form misphase of the present invention position parallel connection combined plunger formula oil hydraulic pump be the plan view of parallel connection built-up shaft in misphase position to plunger hydraulic pump structure and principle;

Fig. 2-c is the sectional view at parallel connection built-up shaft B-B place in pluger type hydraulic pump, misphase position shown in Figure 1;

Fig. 2-d is the sectional view at parallel connection built-up shaft A-A place in pluger type hydraulic pump, misphase position shown in Figure 1;

Fig. 2-e is the sectional view at parallel connection built-up shaft C-C place in pluger type hydraulic pump, misphase position shown in Figure 1;

Fig. 3 is the experimental liquid hydraulic circuit schematic diagram of misphase of the present invention position parallel connection combined plunger formula oil hydraulic pump;

Fig. 4 adopts radial plunger pump to form the plan view that misphase of the present invention position parallelly connected combined plunger formula oil hydraulic pump is parallelly connected combined radial plunger hydraulic pump structure in misphase position and principle;

Fig. 5 is the sectional view at D-D place in the misphase position shown in Figure 4 parallel connection combined radial pluger type hydraulic pump;

Fig. 6 is that to adopt three axial piston pumps to form misphase of the present invention position parallel connection combined plunger formula oil hydraulic pump be the plan view of parallel connection built-up shaft in misphase position to plunger hydraulic pump structure and principle;

Fig. 7 is the sectional view that Fig. 6 adopts parallel connection built-up shaft E-E place in pluger type hydraulic pump, misphase position of three axial piston pumps compositions;

Fig. 8 adopts the misphase position parallel connection built-up shaft of three axial (radially) plunger pumps compositions to (radially) pluger type hydraulic pump fuel supply flow rate pulsation curves figure;

Fig. 9 adopts three radial plunger pumps to form the plan view that misphase of the present invention position parallelly connected combined plunger formula oil hydraulic pump is parallelly connected combined radial plunger hydraulic pump structure in misphase position and principle;

Figure 10 is the sectional view that Fig. 9 adopts F-F place in the misphase position parallel connection combined radial pluger type hydraulic pump that three radial plunger pumps form;

Figure 11 adopts M axial piston pump to form the plan view that misphase of the present invention position parallelly connected combined plunger formula oil hydraulic pump is each input, output synchronous pulley installation and the annexation of the parallelly connected built-up shaft in misphase position in pluger type hydraulic pump, and M is the odd number more than or equal to 4;

Figure 12 adopts M axial piston pump to form the plan view that misphase of the present invention position parallelly connected combined plunger formula oil hydraulic pump is each input, output synchronous pulley installation and the annexation of the parallelly connected built-up shaft in misphase position in pluger type hydraulic pump, and M is the even number more than or equal to 4;

Figure 13 adopts M radial plunger pump to form the plan view that misphase of the present invention position parallelly connected combined plunger formula oil hydraulic pump is each input, the installation of output synchronous pulley and annexation in the parallelly connected combined radial pluger type hydraulic pump in misphase position, and M is the odd number more than or equal to 4;

Figure 14 adopts M radial plunger pump to form the plan view that misphase of the present invention position parallelly connected combined plunger formula oil hydraulic pump is each input, the installation of output synchronous pulley and annexation in the parallelly connected combined radial pluger type hydraulic pump in misphase position, and M is the even number more than or equal to 4;

Figure 15 adopts the misphase position parallel connection built-up shaft of five axial (radially) plunger pumps compositions to (radially) pluger type hydraulic pump fuel supply flow rate pulsation curves figure;

Figure 16 is the partial enlarged drawing at the G place among Figure 15;

Among the figure: No. 1.2 input synchronous pulleys, No. 2.2 swash plates, No. 3.2 axial plungers, No. 4.2 transmission shafts, No. 5.2 pump housings, No. 6.2 oil distribution casings; 7. be with No. 8.1 axial plungers, No. 9.1 output synchronous pulleys, No. 10.1 transmission shafts, No. 11.1 oil distribution casings, No. 12.1 pump housings synchronously; 13.1 number swash plate, 14. Idle wheels, 15. swelling connecting sleeves, 16. pressure gauges, 17. relief valves, 18. servomotors; 19.1 number axial piston pump, No. 20.2 stators, No. 21.2 radial plungers, No. 22.2 rotors, No. 23.2 oil distributing shafts, No. 24.1 stators; 25.1 number radial plunger, No. 26.1 rotors, No. 27.1 oil distributing shafts, No. 28.2 transmission shafts are radially radially imported synchronous pulley No. 29.2, radially export synchronous pulley No. 30.1; 31.1 transmission shaft number radially, 32. parallelly connected unipump mounting plates, No. 33.2 axial piston pumps, No. 34.1 radial plunger pumps, No. 35.2 radial plunger pumps, 36. bands synchronously radially; 37.3 number axial piston pump, 38.M-1 axial piston pump, 39.M axial piston pump, No. 40.3 radial plunger pumps, 41. parallelly connected combined radial pump mounting plates, 42.M-1 radial plunger pump; 43.M number radial plunger pump, a. axial fuel inlet mouth, b. axially presses hydraulic fluid port, and m. is filler opening radially, and n. radially presses hydraulic fluid port.

Embodiment

The present invention proposes a kind of parallelly connected combined plunger formula oil hydraulic pump; Its basic structure is to adopt two or more specifications and models, performance ginseng flow number, plunger hydraulic parallel connection of pumps that the plunger number is identical, through mechanical drive mode make the transmission shaft of a plurality of pluger type hydraulic pumps synchronous, equidirectional rotation.The plunger of every adjacent two pluger type hydraulic pumps is at the circumferential distribution angle beta that interlaces, and β=2 π/(MZ), Z is the plunger number of single pluger type hydraulic pump, and M is the number of pluger type hydraulic pump.Single plunger hydraulic pumping flow pulsation is big, the problem of underfed in order to solve for parallel connection combined plunger formula oil hydraulic pump; The specified output flow of parallel connection combined plunger formula oil hydraulic pump is M a times of single plunger type hydraulic pump duty, and flow pulse rate is about the 1/M of single plunger type hydraulic pump ²

Parallel connection combined plunger formula oil hydraulic pump both can also can be made up by the radial plunger parallel connection of pumps by axial plunger parallel connection of pumps combination.Below in conjunction with accompanying drawing misphase of the present invention position parallel connection combined plunger formula hydraulic pressure pump structure and annexation are further specified:

1. parallel connection built-up shaft in misphase position is to pluger type hydraulic pump

Consult Fig. 1, Fig. 2-c, Fig. 2-d and Fig. 2-e, misphase of the present invention position parallel connection combined plunger formula oil hydraulic pump can be to be made up of M specification, model, axial piston pump and mechanical transmissioning piece that performance parameter is identical, and wherein M gets the natural number more than or equal to 2.Implement to be connected in parallel with two specifications, model, performance parameter identical No. 1 axial piston pump 19 and No. 2 axial piston pumps 33 among the figure; They comprise basic building block is 5, No. 1 pump housing 12 of No. 2 pump housings; 3, No. 1 axial plunger 8 of No. 2 axial plungers; 2, No. 1 swash plate of No. 2 swash plates, 13, No. 2 oil distribution casings, 11, No. 2 transmission shafts 4 of 6, No. 1 oil distribution casing and No. 1 transmission shaft 10.No. 1 axial piston pump No. 2 input synchronous pulleys 1 and No. 1 output synchronous pulley 9 identical with physical dimension of power intake fixed installation with the transmission shaft motion of No. 2 axial piston pumps; No. 2 input synchronous pulley 1 is connected through being with 7 realization bands synchronously with No. 1 output synchronous pulley 9, makes that No. 1 axial piston pump and No. 2 axial piston pumps can synchronous, equidirectional rotations.Be with 7 one outsides that Idle wheel 14 has been installed synchronously.Axial fuel inlet mouth a in 2 axial piston pumps adopts pipeline to link together and is connected with fuel tank and realizes oil suction, and the axial pressure hydraulic fluid port b employing pipeline in 2 axial piston pumps links together and is connected to its fuel feeding with hydraulic system.

No. 1 pump housing 12 of No. 1 axial piston pump 19 and No. 2 axial piston pumps 33 and No. 2 pump housings 5 circumferentially be evenly equipped with Z No. 1 axial plunger 8 and No. 2 axial plungers 3, be Z=5 shown in the figure.Wherein No. 2 axial plungers 3 on No. 2 pump housings 12 are 1 misphase parallactic angle that circumferentially distributes (being called for short the misphase parallactic angle) β with respect to No. 1 axial plunger 8 on No. 1 pump housing 5.Be that No. 1 axial plunger 8 that is positioned among Fig. 1 on No. 1 pump housing 12 that No. 2 axial plungers 3 on No. 2 pump housings 5 in top are positioned at the bottom relatively is 1 misphase parallactic angle β.Misphase parallactic angle β is calculated as follows value

$\mathrm{\β}=\frac{\mathrm{\π}}{Z}---\left(1\right)$

The unit of the misphase parallactic angle of formula (1) is a radian; If by angle calculation, following formula is expressed as

Be the basic structure of formation misphase position parallel connection built-up shaft shown in Fig. 1 to pluger type hydraulic pump.During work, servomotor 18 will move and power inputs to No. 1 transmission shaft 10 or No. 2 transmission shafts 4, drive No. 1 pump housing 12 and No. 2 pump housings 5 and rotate with rotational speed omega.No. 1 axial piston pump 19 and No. 2 axial piston pumps i.e. axial fuel inlet mouth a on No. 1 oil distribution casing 11 and No. 2 oil distribution casings 6 suck hydraulic oil, from axial pressure hydraulic fluid port b pressure oil output.

According to the working principle of axial piston pump, the misphase position parallel connection built-up shaft that is made up of two same specification models is calculated as follows to the output flow of pluger type hydraulic pump, is the actual flow of the axial piston pump of odd number for the axial plunger number:

$Q=\frac{\mathrm{\&pi;}}{4}{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="HDA0000116446070000011.png"\; state="\{\{state\}\}">d</figure-callout>}}^2\mathrm{zRn}\tan \mathrm{\&alpha;}{\mathrm{\&eta;}}_v$

In the formula: Z-1 axial plunger number;

D-1 axial plunger diameter, unit, mm;

The circumferential distribution circle radius of R-1 axial plunger, unit, mm;

No. 1 swashplate angle of α-No. 1 axial piston pump, unit, degree;

The rotating speed of n-1 axial piston pump, unit, r/m;

η _vThe volumetric efficiency of-No. 1 axial piston pump;

According to flow pulsation definition and geometrical relationship, for the axial piston pump of misphase position installation, when the misphase parallactic angle does

The time, calculate the flow pulsation coefficient,

And when misphase parallactic angle β=0, $\mathrm{\&delta;}=1-\mathrm{Cos}\frac{\mathrm{\&pi;}}{2Z},$

Ratio is made on above-mentioned two formulas the right:

$\frac{1-\cos \frac{\mathrm{\&pi;}}{2Z}}{1-\cos \frac{\mathrm{\&pi;}}{4Z}}=2(1+\cos \frac{\mathrm{\&pi;}}{4Z})\&ap;4{|}_{Z=3~9}$

Conclusion: parallel connection built-up shaft in misphase position is identical to plunger hydraulic POF average with non-misphase position parallel connection built-up shaft to plunger hydraulic POF average; But the flow pulsation amplitude reduces, and flow pulse rate is about non-misphase position parallel connection built-up shaft to 1/4 of pluger type hydraulic pump flow pulse rate.

Parallel connection built-up shaft in above-mentioned misphase position can reach requirement through the circumferential relative position of adjusting No. 2 pump housings 5 and No. 1 pump housing 12 to the misphase parallactic angle β of pluger type hydraulic pump.The method of adjustment is to make in the synchronous pulley 9 one of No. 2 input synchronous pulleys 1 and No. 1 output with respect to fastening again behind misphase parallactic angle β of another rotation.To relatively rotate the Placement of method and synchronous pulley and transmission shaft of a misphase parallactic angle β relevant with exporting synchronous pulley 9 for No. 1 to make No. 2 input synchronous pulleys 1; In the embodiments of the invention between No. 2 input synchronous pulleys 1 and No. 2 transmission shafts 4 and No. 1 output synchronous pulley 9 and No. 1 transmission shaft 10 all the identical swelling connecting sleeve 15 of structure of employing be connected; When needs adjustment misphase parallactic angle β; Can unclamp swelling connecting sleeve 15, can carry out continuous stepless and regulate misphase parallactic angle β size.

Synchronous pulley (9, No. 2 inputs of No. 1 output synchronous pulley synchronous pulley 1) can adopt the key Placement with being connected also of transmission shaft (10, No. 2 transmission shafts 4 of No. 1 transmission shaft); This mode can have level to regulate to misphase parallactic angle β; The minimum rotation angular displacement is that No. 1 output synchronous pulley 9 and No. 2 input synchronous pulleys 1 relatively rotate a tooth

$\mathrm{\&theta;}=\frac{2\mathrm{\&pi;}}{Z_1}---\left(2\right)$

Z wherein ₁It is the number of teeth of No. 1 output synchronous pulley 9 or No. 2 input synchronous pulleys 1.The unit of misphase parallactic angle is a radian in the formula (2); If by angle calculation, following formula is expressed as

For existing oil hydraulic pump, can differentiate the circumferential phase state of current plungers pump plunger as follows:

Consult Fig. 3, according to the structure formation hydraulic system of the oil hydraulic circuit shown in the figure, servomotor 18 drives misphase position parallel connection combined plunger formula oil hydraulic pumps, and relief valve 17 is transferred to lower force value (5MPa), and the rotating speed that makes servomotor 18 is at 500rpm.Observe the beat of pointer situation of pressure gauge 16; According to beat of pointer situation; Adjust No. 1 pump housing 12 and the misphase parallactic angle β of No. 2 pump housing 5 upper plugs on No. 1 axial piston pump 19 and No. 2 axial piston pumps repeatedly, reach minimum until the beat of pointer amplitude of pressure gauge 16.

Pressure gauge 16 among the figure in the oil hydraulic circuit also can be replaced with pressure transducer, observes variation in pressure through the electronic pressure indicating meter.

2. misphase position parallel connection combined radial pluger type hydraulic pump

Consult Fig. 4 and Fig. 5, misphase of the present invention position parallel connection combined plunger formula oil hydraulic pump also can be made up of M specification, model, radial plunger pump and mechanical transmissioning piece that performance parameter is identical, and wherein M gets the natural number more than or equal to 2.Implement to be connected in parallel with two specifications, model, performance parameter identical No. 1 radial plunger pump 34 and No. 2 radial plunger pumps 35 among the figure; They comprise basic building block is 20, No. 1 stator 24 of No. 2 stators; 21, No. 1 radial plunger 25 of No. 2 radial plungers; No. 27,2,23, No. 1 oil distributing shaft of 26, No. 2 oil distributing shafts of 22, No. 1 rotor of No. 2 rotors is transmission shaft 28 and No. 1 transmission shaft 31 radially radially.No. 1 radial plunger pump 34 and No. 2 radial plunger pumps 35 No. 1 radially transmission shaft 31 and No. 2 radially identical No. 1 of 1 Dimensions of input end fixed installation of transmission shaft 28 radially export synchronous pulley 30 and radially import synchronous pulley 29 No. 2; Radially export synchronous pulley 30 for No. 1 and radially import for No. 2 between the synchronous pulley 29, make that No. 1 radial plunger pump 34 and No. 2 radial plunger pumps 35 can synchronous, equidirectional rotations through radially being with 36 to be connected synchronously.No. 1 radial plunger pump 34 adopts pipeline to link together with radially filler opening m in No. 2 radial plunger pumps 35 and is connected with fuel tank realizes oil suction, and the radially pressure hydraulic fluid port n employing pipeline in No. 1 radial plunger pump 34 and No. 2 radial plunger pumps 35 links together and is connected to its fuel feeding with hydraulic system.

No. 1 rotor 26 of No. 1 radial plunger pump 34 and No. 2 radial plunger pumps 35 and No. 2 rotors 22 circumferentially be evenly equipped with Z No. 1 radial plunger 25 and No. 2 radial plungers 21, be Z=5 shown in Fig. 4.Wherein No. 2 radial plungers 21 on No. 2 rotors 22 are a misphase parallactic angle β with respect to No. 1 radial plunger 25 on No. 1 rotor 26.Be that No. 2 radial plungers 21 on No. 2 rotors 22 of Fig. 5 middle and upper part are a misphase parallactic angle β with respect to No. 1 radial plunger 25 on No. 1 rotor 26 of bottom.β calculates value by formula (1):

$\mathrm{\&beta;}=\frac{\mathrm{\&pi;}}{Z}$

Represent

by angle

The transmission of power of transmission shaft, transmission is with in identical employing with above-mentioned axial piston pump synchronously; Phase judgment method is also identical with axial piston pump with the computational methods of misphase parallactic angle.

According to the working principle of radial plunger pump, the output flow of the misphase position parallel connection combined radial pluger type hydraulic pump that is made up of two same specification models is calculated as follows, and is the actual output flow of the radial plunger pump of odd number for the radial plunger number:

$Q=\frac{\mathrm{\&pi;}}{2}{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="HDA0000116446070000011.png"\; state="\{\{state\}\}">d</figure-callout>}}^2\mathrm{eZn}{\mathrm{\&eta;}}_v$

In the formula: Z-1 radial plunger number;

The throw of eccentric of e-1 rotor and No. 1 stator, unit, mm;

η _vThe volumetric efficiency of-No. 1 radial plunger pump;

The rotating speed of n-1 radial plunger pump, unit, r/m;

D-1 radial plunger diameter, unit, mm;

When the throw of eccentric of 24 of No. 1 rotor 26 of No. 1 radial plunger pump 34 and No. 1 stators is e; No. 1 radial plunger 25 is in accomplishing once suction, oil extraction process; It is the longest to stretch out plunger during dead center position in oil-absorbing process; It is the shortest to stretch out plunger during dead center position in the oil extraction process, and the range of No. 1 radial plunger is 2e.

According to flow pulsation definition and geometrical relationship, for the radial plunger pump of misphase position installation, when the misphase parallactic angle does The time, calculate the flow pulsation coefficient,

And when misphase parallactic angle β=0, $\mathrm{\&delta;}={2\mathrm{<figure-callout\; id="2"\; label="Tg"\; filenames="HDA0000116446070000011.png"\; state="\{\{state\}\}">Tg</figure-callout>}}^2\frac{\mathrm{\&pi;}}{2Z},$

Ratio is made on above-mentioned two formulas the right:

$\frac{{2\mathrm{<figure-callout\; id="2"\; label="tg"\; filenames="HDA0000116446070000011.png"\; state="\{\{state\}\}">tg</figure-callout>}}^2\frac{\mathrm{\&pi;}}{2\mathrm{<figure-callout\; id="2"\; label="Z"\; filenames="HDA0000116446070000011.png"\; state="\{\{state\}\}">Z</figure-callout>}}}{{2\mathrm{<figure-callout\; id="2"\; label="tg"\; filenames="HDA0000116446070000011.png"\; state="\{\{state\}\}">tg</figure-callout>}}^2\frac{\mathrm{\&pi;}}{4Z}}\&ap;\frac{1-\cos \frac{\mathrm{\&pi;}}{Z}}{1-\cos \frac{\mathrm{\&pi;}}{2Z}}=2(1+\cos \frac{\mathrm{\&pi;}}{2Z})\&ap;4{|}_{Z=5~9}$

Conclusion: misphase position parallel connection combined radial plunger hydraulic POF average is identical with non-misphase position parallel connection combined radial plunger hydraulic POF average; But the flow pulsation amplitude reduces, and flow pulse rate can reach 1/4 of non-misphase position parallel connection combined radial pluger type hydraulic pump.

3. adopt plural specifications and models axial piston pump identical or radial plunger pump to form misphase position parallel connection combined plunger formula oil hydraulic pump with performance parameter

Such misphase position parallel connection combined plunger formula oil hydraulic pump is formed main points and is:

1) the plunger number of each pluger type hydraulic pump is identical;

2) transmission shaft of each pluger type hydraulic pump must can synchronous, equidirectional rotation;

3) the misphase parallactic angle β of the axial plunger of adjacent two pluger type hydraulic pumps or radial plunger is undertaken by following rule: $\mathrm{\&beta;}=\frac{2\mathrm{\&pi;}}{\mathrm{MZ}}$

Adopt three axial piston pumps to form described misphase position parallel connection combined plunger formula oil hydraulic pump:

Consult Fig. 6 and Fig. 7, form described misphase position parallel connection combined plunger formula oil hydraulic pump for three axial piston pumps of employing shown in the figure.The rated flow of each axial piston pump is 2.5L/min among the embodiment; Rated working pressure is 63MPa; The axial plunger of axial piston pump is counted Z=5, and other all technical parameters of 19, No. 2 axial piston pumps 33 of No. 1 axial piston pump and No. 3 axial piston pumps 37 such as specification, model, performance parameter are all identical.Through bolt and locating stud be installed in the parallelly connected unipump mounting plate 32 that be in vertical position on No. 3 axial piston pumps 37 19, No. 2 axial piston pumps 33 of No. 1 axial piston pump; The rotational axis of 19, No. 2 axial piston pumps 33 of No. 1 axial piston pump and No. 3 axial piston pumps 37 be parallel to each other and locate in the same horizontal plane, in 19, No. 2 axial piston pumps 33 of No. 1 axial piston pump and No. 3 axial piston pumps 37 input end of 10, No. 2 transmission shafts 4 of No. 1 transmission shaft and No. 3 transmission shafts towards consistent be that input end is positioned at the right side.19, No. 2 axial piston pumps 33 of No. 1 axial piston pump are connected through being with the kind of drive synchronously with No. 3 transmission shafts with 10, No. 2 transmission shafts 4 of No. 1 transmission shaft of No. 3 axial piston pumps 37.Exactly; The input end of No. 1 transmission shaft 10 of No. 1 axial piston pump 19 is through No. 1 output of swelling connecting sleeve 15 fixed installations synchronous pulley 9; The input end of No. 2 transmission shafts 4 of No. 2 axial piston pumps 33 is through 2 swelling connecting sleeve 15 fixed installation No. 2 inputs synchronous pulleys 1 and No. 2 output synchronous pulleys that structure is identical; The input end of No. 3 transmission shafts of No. 3 axial piston pumps 37 will be installed No. 3 output synchronous pulleys (being positioned at the left side of No. 3 input synchronous pulleys) through No. 3 inputs of swelling connecting sleeve 15 fixed installations synchronous pulley when No. 4 axial piston pumps are arranged.Adopt between No. 2 input synchronous pulleys 1 on No. 2 transmission shafts 4 of on No. 1 transmission shaft 10 of No. 1 axial piston pump 19 No. 1 output synchronous pulley 9 and No. 2 axial piston pumps 33 and be with 7 to be connected synchronously, 2 to No. 3 synchronous being with of employing are connected between No. 3 input synchronous pulleys on No. 2 output synchronous pulleys on No. 2 transmission shafts 4 of No. 2 axial piston pumps 33 and No. 3 transmission shafts of No. 3 axial piston pumps 37.Each bar outside of band is synchronously installed the Idle wheel 14 that structure is identical.The input end of No. 1 transmission shaft 10 of No. 1 axial piston pump 19 is connected with servomotor 18 through coupling, and servomotor 18 rotates, and drives 10, No. 2 transmission shafts 4 of No. 1 transmission shaft and No. 3 synchronous, the equidirectional rotations of transmission shaft.Circumferentially all be evenly equipped with 58, No. 2 axial plungers 3 of No. 1 axial plunger and No. 3 axial plungers that structure is identical on 12, No. 2 pump housings 5 of No. 1 pump housing of 19, No. 2 axial piston pumps 33 of No. 1 axial piston pump and No. 3 axial piston pumps 37 and No. 3 pump housings; Wherein identical No. 2 axial plungers 3 No. 1 axial plunger 8 identical with respect to 5 structures on No. 1 pump housing 12 in No. 1 axial piston pump 19 of 5 structures on No. 2 pump housings 5 in No. 2 axial piston pumps 33 is 1 misphase parallactic angle β, and identical No. 3 axial plungers No. 2 axial plungers 3 identical with respect to 5 structures on No. 2 pump housings 5 in No. 2 axial piston pumps 33 of 5 structures on No. 3 pump housings in No. 3 axial piston pumps 37 are 1 misphase parallactic angle β.The input end of No. 1 transmission shaft 10 of No. 1 axial piston pump 19 connects servomotor 18 through coupling; Certainly, also can connect servomotor 18 through coupling at No. 2 transmission shafts 4 of No. 2 axial piston pumps 33 or No. 3 axial piston pumps 37 or the input end of No. 3 transmission shafts.19, No. 2 axial piston pumps 33 of No. 1 axial piston pump adopt pipeline to link together with axial fuel inlet mouth a in No. 3 axial piston pumps 37 and are connected with fuel tank realizes oil suction, and the axial pressure hydraulic fluid port b employing pipeline in 19, No. 2 axial piston pumps 33 of No. 1 axial piston pump and No. 3 axial piston pumps 37 links together and is connected to its fuel feeding with hydraulic system.

The basic parameter of the servomotor 18 among the embodiment is rated power 5kW, rated speed 2000rpm, nominal torque 23Nm.The rated flow 7.5L/min of misphase position parallel connection combined plunger formula oil hydraulic pump, rated working pressure 58MPa.No. 1 axial plunger of No. 1 axial piston pump 19 is counted Z=5 substitution formula (1) calculate axial plunger misphase parallactic angle β=2 π/15=24 ° in the misphase position parallel connection combined plunger formula oil hydraulic pump.After 19, No. 2 axial piston pumps 33 of No. 1 axial piston pump and No. 3 axial piston pump 37 connections; Set up the hydraulic system shown in Fig. 3; According to said method, differentiate the circumferential phase place of axial plunger, and change the circumferential relative position of adjacent two axial piston pumps through swelling connecting sleeve 15; Making the misphase parallactic angle β between No. 2 axial piston pumps 33 and No. 1 axial piston pump 19 is 24 °, and the misphase parallactic angle β between No. 3 axial piston pumps 37 and No. 2 axial piston pumps 33 is 24 °.

Consult Fig. 8, during single axial plunger oil pump feed, the flow of this axial piston pump is with T ₁=π/5 changed for the cycle, and its flow pulsation is Q ₁=4.89%Q _Max19, No. 2 axial piston pumps 33 of No. 1 axial piston pump are connected fuel feeding with No. 3 axial piston pump 37 parallelly connected misphase positions; Output flow is 19, No. 2 axial piston pumps 33 of No. 1 axial piston pump and No. 3 axial piston pump 37 flow sums; The flow pulsation cycle is reduced to 1/3, is T ₂=π/15, flow pulsation is about Q ₂=0.535%Q ' _Max, can draw 19, No. 2 axial piston pumps 33 of No. 1 axial piston pump and be about 1/3 of single axial piston pump with the flow pulsation of No. 3 axial piston pump 37 parallelly connected gained ², promptly 1/9.Shown in figure.

Adopt three radial plunger pumps to form described misphase position parallel connection combined plunger formula oil hydraulic pump:

Consult Fig. 9 and Figure 10; The rated flow of each radial plunger pump is 2.5L/min among the embodiment; Rated working pressure is 63MPa; The radial plunger of radial plunger pump is counted Z=5, and other all technical parameters of 34, No. 2 radial plunger pumps 35 of No. 1 radial plunger pump and No. 3 radial plunger pumps 40 such as specification, model, performance parameter are all identical.Through bolt and locating stud be installed in the parallelly connected combined radial pump mounting plate 41 that be in vertical position on No. 3 radial plunger pumps 40 34, No. 2 radial plunger pumps 35 of No. 1 radial plunger pump; The rotational axis of 34, No. 2 radial plunger pumps 35 of No. 1 radial plunger pump and No. 3 radial plunger pumps 40 be parallel to each other and locate in the same horizontal plane, in 34, No. 2 radial plunger pumps 35 of No. 1 radial plunger pump and No. 3 radial plunger pumps 40 No. 1 radially No. 31,2, transmission shaft radially transmission shaft 28 and No. 3 radially transmission shaft input end towards consistent be that input end is positioned at the right side.With 34, No. 2 radial plunger pumps 35 of No. 1 radial plunger pump and No. 3 radial plunger pumps 40 No. 1 radially No. 31,2, transmission shaft radially transmission shaft 28 with No. 3 radially transmission shaft be connected through the band kind of drive synchronously.Exactly; No. 1 of No. 1 radial plunger pump 34 radially the input end of transmission shaft 31 radially export synchronous pulley 30 No. 1 through identical swelling connecting sleeve 15 fixed installations of structure; No. 2 of No. 2 radial plunger pumps 35 radially the input end of transmission shaft 28 radially import synchronous pulley 29 and radially export synchronous pulley No. 2 for No. 2 through 2 identical swelling connecting sleeves 15 fixed installations of structure; No. 3 of No. 3 radial plunger pumps 40 radially the input end of transmission shaft radially import synchronous pulley No. 3 through 2 identical swelling connecting sleeves 15 fixed installations of structure, to install during if any No. 4 radial plunger pumps and radially export synchronous pulley (being positioned at the left side of radially importing synchronous pulley for No. 3) for No. 3.No. 1 of No. 1 radial plunger pump 34 radially No. 1 on the transmission shaft 31 radially export synchronous pulley 30 and No. 2 radial plunger pumps 35 No. 2 radially No. 2 on the transmission shaft 28 radially import to adopt between the synchronous pulley 29 and radially be with 36 to be connected synchronously, No. 2 of No. 2 radial plunger pumps 35 radially No. 2 on the transmission shaft 28 radially import synchronous pulley 29 and No. 3 radial plunger pumps 40 No. 3 radially No. 3 on the transmission shaft radially import and adopt 2 to No. 3 radially synchronous being with to be connected between the synchronous pulley.Each bar outside of band is synchronously installed the Idle wheel 14 that structure is identical.No. 1 of No. 1 radial plunger pump 34 radially the input end of transmission shaft 31 be connected with servomotor 18 through coupling, servomotor 18 rotations drive No. 1 radially 31, No. 2 radially transmission shaft 28 and No. 3 radially synchronous, equidirectional rotation of transmission shaft of transmission shaft.Circumferentially all be evenly equipped with 5 25, No. 2 radial plungers 21 of No. 1 radial plunger and No. 3 radial plungers that structure is identical on 26, No. 2 rotors 22 of No. 1 rotor of 34, No. 2 radial plunger pumps 35 of No. 1 radial plunger pump and No. 3 radial plunger pumps 40 and No. 3 rotors; Wherein identical No. 2 radial plungers 21 No. 1 radial plunger 25 identical with respect to 5 structures on No. 1 rotor 26 in No. 1 radial plunger pump 34 of 5 structures on No. 2 rotors 22 in No. 2 radial plunger pumps 35 is 1 misphase parallactic angle β, and identical No. 3 radial plungers No. 2 radial plungers 21 identical with respect to 5 structures on No. 2 rotors 22 in No. 2 radial plunger pumps 35 of No. 3 epitrochanterian 5 structures in No. 3 radial plunger pumps 40 are 1 misphase parallactic angle β.No. 1 of No. 1 radial plunger pump 34 radially the input end of transmission shaft 31 connect servomotor 18 through coupling; Certainly, also can No. 2 radial plunger pumps 35 or No. 3 radial plunger pumps 40 No. 2 radially transmission shaft 28 or No. 3 radially the input end of transmission shaft connect servomotor 18 through coupling.34, No. 2 radial plunger pumps 35 of No. 1 radial plunger pump adopt pipeline to link together with radially filler opening m in No. 3 radial plunger pumps 40 and are connected with fuel tank realizes oil suction, and the radially pressure hydraulic fluid port n employing pipeline in 34, No. 2 radial plunger pumps 35 of No. 1 radial plunger pump and No. 3 radial plunger pumps 40 links together and is connected to its fuel feeding with hydraulic system.

The basic parameter of the servomotor 18 among the embodiment is rated power 5kW, rated speed 2000rpm, nominal torque 23Nm.The rated flow 7.5L/min that forms the single radial plunger pump of misphase position parallel connection combined plunger formula oil hydraulic pump, rated working pressure 58MPa.No. 1 radial plunger of No. 1 radial plunger pump 34 is counted Z=5 substitution formula (1) calculate radial plunger misphase parallactic angle β=2 π/15=24 ° in the misphase position parallel connection combined plunger formula oil hydraulic pump.After 34, No. 2 radial plunger pumps 35 of No. 1 radial plunger pump and No. 3 radial plunger pump 40 connections; Set up the hydraulic system shown in Fig. 3; According to said method, differentiate the circumferential phase place of radial plunger, and change the circumferential relative position of adjacent two radial plunger pumps through swelling connecting sleeve 15; Making the misphase parallactic angle β between No. 2 radial plunger pumps 35 and No. 1 radial plunger pump 34 is 24 °, and the misphase parallactic angle β between No. 3 radial plunger pumps 40 and No. 2 radial plunger pumps 35 is 24 °.

Consult Fig. 8, during single radial plunger oil pump feed, the flow of this radial plunger pump is with T ₁=π/5 changed for the cycle, and its flow pulsation is Q ₁=4.89%Q _Max34, No. 2 radial plunger pumps 35 of No. 1 radial plunger pump and No. 3 radial plunger pump 40 parallelly connected misphase position fuel feeding, output flow is 34, No. 2 radial plunger pumps 35 of No. 1 radial plunger pump and No. 3 radial plunger pump 40 flow sums, the flow pulsation cycle is reduced to 1/3, is T ₂=π/15, flow pulsation is about Q ₂=0.535%Q ' _Max, can draw 34, No. 2 radial plunger pumps 35 of No. 1 radial plunger pump and be about 1/3 of single radial plunger pump with the flow pulsation of No. 3 radial plunger pump 40 parallelly connected gained ², promptly 1/9.Shown in figure.

To adopt M specification, model, axial piston pump that performance parameter is identical to form described misphase position parallel connection combined plunger formula oil hydraulic pump be misphase position parallel connection built-up shaft to pluger type hydraulic pump:

Consult Figure 11 and Figure 12, adopt M specification, model, axial piston pump that performance parameter is identical form described misphase position parallel connection combined plunger formula oil hydraulic pump be misphase position parallel connection built-up shaft to pluger type hydraulic pump, wherein: M gets the natural number more than or equal to 4.At this moment the input end of No. 3 axial drive shaft in No. 3 axial piston pumps 37 increases through swelling connecting sleeve 15 and adorns the output synchronous pulley No. 3; The input end of No. 4 transmission shafts of No. 4 axial piston pumps is through 2 swelling connecting sleeve 15 fixed installation No. 4 inputs synchronous pulleys and No. 4 output synchronous pulleys that structure is identical; The input end of No. 5 transmission shafts of No. 5 axial piston pumps is through 2 swelling connecting sleeve 15 fixed installation No. 5 inputs synchronous pulleys and No. 5 output synchronous pulleys that structure is identical; The rest may be inferred ...; The input end fixed installation M-1 number output synchronous pulley of the M-1 transmission shaft of M-1 axial piston pump 38 and M-1 number output synchronous pulley; M number input of the input end fixed installation synchronous pulley of the M transmission shaft of M axial piston pump 39 is (when M is even number; M number input synchronous pulley be positioned at M transmission shaft input end in (left side) side, when M was odd number, M number input synchronous pulley was positioned at outer (right side) side of M transmission shaft input end).Adopt to be with synchronously for 3 to No. 4 between No. 4 input synchronous pulleys on No. 4 transmission shafts in No. 3 output synchronous pulleys on No. 3 transmission shafts in No. 3 axial piston pumps 37 and No. 4 axial piston pumps and be connected; Adopt to be with synchronously for 4 to No. 5 between No. 5 input synchronous pulleys on No. 5 transmission shafts of on No. 4 transmission shafts of No. 4 axial piston pumps No. 4 output synchronous pulleys and No. 5 axial piston pumps and be connected; The rest may be inferred ..., adopt to be with synchronously for M-1 to M number between the M number input synchronous pulley on the M transmission shaft on the M-1 transmission shaft in the M-1 axial piston pump M-1 number output synchronous pulley and the M axial piston pump to be connected.M axial piston pump is installed on the parallelly connected unipump mounting plate 32 that is in vertical position through bolt and locating stud; The rotational axis of the transmission shaft in M axial piston pump is parallel to each other and locates in the same horizontal plane; The input end of the transmission shaft in M axial piston pump is positioned at the right side, each synchronously outside of band promptly take to synchronously for 3 to No. 4 M-1 to M number synchronously an outside of band an identical Idle wheel 14 of structure be installed connected for contact.Axial fuel inlet mouth a in M axial piston pump adopts pipeline to link together and is connected with fuel tank and realizes oil suction, and the axial pressure hydraulic fluid port b employing pipeline in M axial piston pump links together and is connected to its fuel feeding with hydraulic system.The input end of No. 1 transmission shaft 10 of No. 1 axial piston pump 19 or the M transmission shaft of M axial piston pump 39 connects servomotor 18 through coupling, and servomotor 18 rotates, and drives synchronous, the equidirectional rotation of No. 1 transmission shaft 10 to M transmission shafts.Certainly; The input end that also can be No. 2 any one the axial plunger pump drive shaft in the middle of axial piston pump 33 to the M-1 axial piston pumps 38 connects servomotor 18 through coupling; At this moment No. 1 axial piston pump 19 that is in two ends is fixed No. 1 input synchronous pulleys and M number input synchronous pulleys with the input end of M transmission shaft through 2 identical swelling connecting sleeves 15 of structure with No. 1 transmission shaft 10 of M axial piston pump 39, and the input end of other axial plunger pump drive shaft is all imported synchronous pulleys and 1 output synchronous pulley through 21 identical of swelling connecting sleeve 15 fixed installations of structure.

Axial plunger by on the back axial piston pump pump housing of adjacent two axial piston pumps in the middle of No. 4 axial piston pump to the M axial piston pumps 39 is 1 misphase parallactic angle β with respect to the axial plunger on the previous axial piston pump pump housing.

Be installed in 1, No. 2 output of No. 1 output synchronous pulley 9, No. 2 inputs synchronous pulley synchronous pulley on the identical axial piston pump of M specification, model, performance parameter, No. 3 input synchronous pulleys, No. 3 output synchronous pulleys, No. 4 input synchronous pulleys, No. 4 output synchronous pulleys, No. 5 input synchronous pulleys, No. 5 output synchronous pulleys ... identical with M-1 number output synchronous pulley, M-1 number output synchronous pulley with M number input synchronous pulley (it is individual to amount to 2M-2) structure; Be with synchronously 7,2 to No. 3 synchronously band, 3 to No. 4 synchronously band ... band (amounting to the M-1 bar) structure is identical synchronously with M-1 to M number; The Idle wheel 14 of the outside installation of band (being M-1) structure is identical synchronously for each bar; Swelling connecting sleeve 15 (for the 2M-2) structure identical (all bulging joining sleeves 15 are used Z 3 series) of each synchronous pulley is installed.

Adopting M specification, model, radial plunger pump that performance parameter is identical to form described misphase position parallel connection combined plunger formula oil hydraulic pump is misphase position parallel connection combined radial pluger type hydraulic pump:

Consult Figure 13 and Figure 14, adopting M specification, model, radial plunger pump that performance parameter is identical to form described misphase position parallel connection combined plunger formula oil hydraulic pump is misphase position parallel connection combined radial pluger type hydraulic pump, and wherein: M gets the natural number more than or equal to 4.At this moment No. 3 in No. 3 radial plunger pumps 40 radially input end of transmission shaft increase through swelling connecting sleeve 15 and adorn No. 3 and radially export synchronous pulley; No. 4 of No. 4 radial plunger pumps radially the input end of transmission shaft radially import synchronous pulley and radially export synchronous pulley No. 4 for No. 4 through 2 identical swelling connecting sleeves 15 fixed installations of structure; No. 5 of No. 5 radial plunger pumps radially the input end of transmission shaft radially import synchronous pulley and radially export synchronous pulley No. 5 for No. 5 through 2 identical swelling connecting sleeves 15 fixed installations of structure; The rest may be inferred ...; The M-1 of M-1 radial plunger pump No. 42 radially the input end fixed installation of transmission shaft radially import synchronous pulley and radially export synchronous pulley M-1 number for M-1 number; The M of M radial plunger pump No. 43 radially the input end fixed installation of transmission shaft radially import synchronous pulley (when M is even number M number; Radially import for M number synchronous pulley be positioned at M number radially the transmission shaft input end in (left side) side; When M is odd number, radially imports synchronous pulley for M number and be positioned at radially outer (right side) side of transmission shaft input end M number).In No. 3 radial plunger pumps 40 No. 3 radially No. 3 on the transmission shaft radially export in synchronous pulley and No. 4 radial plunger pumps No. 4 radially No. 4 on the transmission shaft radially import adopt between the synchronous pulley 3 to No. 4 radially synchronously band be connected; No. 4 of No. 4 radial plunger pumps radially No. 4 on the transmission shaft radially export synchronous pulley and No. 5 radial plunger pumps No. 5 radially No. 5 on the transmission shaft radially import adopt between the synchronous pulley 4 to No. 5 radially synchronously band be connected; The rest may be inferred ..., the M-1 in the M-1 radial plunger pump 42 number radially M-1 number on the transmission shaft radially export in synchronous pulley and the M radial plunger pump 43 M number radially M number on the transmission shaft radially import adopt between the synchronous pulley M-1 to M number radially synchronously band be connected.M radial plunger pump is installed on the parallelly connected combined radial pump mounting plate 41 that is in vertical position; The rotational axis of the transmission shaft in M radial plunger pump is parallel to each other; The input end of the transmission shaft in M radial plunger pump is positioned at the right side, each bar synchronously an outside of band promptly take to synchronously for 3 to No. 4 M-1 to M number synchronously an outside of band the Idle wheel 14 that structure is identical is installed.Radially filler opening m in M radial plunger pump adopts pipeline to link together and is connected with fuel tank and realizes oil suction, and the radially pressure hydraulic fluid port n employing pipeline in M radial plunger pump links together and is connected to its fuel feeding with hydraulic system.No. 1 of No. 1 radial plunger pump 34 radially transmission shaft 31 or M radial plunger pump 43 M number radially the input end of transmission shaft connect servomotor 18 through coupling; Servomotor 18 rotates, and drives No. 1 radially 31 to M numbers radially transmission shaft 43 synchronous, equidirectional rotations of transmission shaft.Certainly; The input end that also can be No. 2 any one the radial plunger pump drive shaft in the middle of radial plunger pump 35 to the M-1 radial plunger pumps 42 connects servomotor 18 through coupling; At this moment No. 1 radial plunger pump 34 that is in two ends and M radial plunger pump 43 No. 1 radially transmission shaft 31 with M number radially the input end of transmission shaft radially import synchronous pulley 30 No. 1 and radially import synchronous pulley through identical swelling connecting sleeves of 2 structures 15 are fixing with M number, other the radial plunger pump i.e. input end of the radially transmission shaft of any one radial plunger pump in the middle of No. 2 radial plunger pump 35 to M-1 radial plunger pumps 42 is all radially imported synchronous pulley and 1 through 2 identical swelling connecting sleeves 15 1 of fixed installations of structure and is radially exported synchronous pulley.The back epitrochanterian radial plunger of radial plunger pump of adjacent two radial plunger pumps in the middle of No. 4 radial plunger pump to M radial plunger pumps 43 is 1 misphase parallactic angle β with respect to the epitrochanterian radial plunger of previous radial plunger pump.

Be installed in M specification; Model; Radially export synchronous pulley 30 No. 1 on the identical radial plunger pump of performance parameter; Radially import synchronous pulley 29 No. 2; Radially export synchronous pulley No. 2; Radially import synchronous pulley No. 3; Radially export synchronous pulley No. 3; Radially import synchronous pulley No. 4; Radially export synchronous pulley No. 4; Radially import synchronous pulley No. 5; Radially export synchronous pulley No. 5; ... with radially import synchronous pulley M-1 number; Radially export synchronous pulley for M-1 number and radially to import synchronous pulley (amounting to 2M-2) structure for M number identical; Radially be with synchronously 36,2 to No. 3 radially synchronously band, 3 to No. 4 radially synchronously band ... radially band (amount to M-1 bar) structure is identical synchronously with M-1 to M number; Radially the Idle wheel 14 of the outside installation of the synchronous band of band and each bar (it is individual to be respectively M-1) structure is identical synchronously for each bar; Each radially synchronous pulley identical with the swelling connecting sleeve 15 that each synchronous pulley is installed (being respectively 2M-2) structure (all bulging joining sleeves 15 are used Z 3 series) is installed.

Below be the applicable cases of 5 axles (directly) to the plunger pump parallel connection:

The basic parameter of the servomotor 18 among the embodiment is rated power 5kW, rated speed 2000rpm, nominal torque 23Nm.Form the rated flow 12.5L/min of the single axle (directly) of misphase position parallel connection combined plunger formula oil hydraulic pump, rated working pressure 58MPa to plunger pump.No. 1 axle (directly) is counted Z=5 substitution formula (1) to the plunger of plunger pump calculate axle (directly) in the misphase position parallel connection combined plunger formula oil hydraulic pump to plunger misphase parallactic angle β=2 pi/2 5=14.4 °.With No. 1 axle (directly) to plunger pump, No. 2 axles (directly) to plunger pump and No. 3 axles (directly) after the plunger pump connection; Set up the hydraulic system shown in Fig. 3; According to said method; Differentiate the circumferential phase place of axle (directly) to plunger; And change the circumferential relative position of adjacent two axles (directly) to plunger pump through swelling connecting sleeve 15, and making the misphase parallactic angle β between No. 2 radial plunger pumps and No. 1 radial plunger pump is 14.4 °, No. 3 axles (directly) are 14.4 ° to plunger pump and the misphase parallactic angle β of No. 2 axles (directly) between plunger pump; No. 4 axles (directly) are 14.4 ° to plunger pump and the misphase parallactic angle β of No. 3 axles (directly) between plunger pump, and No. 5 axles (directly) are 14.4 ° to plunger pump and the misphase parallactic angle β of No. 4 axles (directly) between plunger pump.

Consult Figure 15, during single radial plunger oil pump feed, the flow of this radial plunger pump is with T ₁=π/5 changed for the cycle, and its flow pulsation is Q ₁=4.89%Q _MaxNo. 1 axle (directly) to plunger pump, No. 2 axles (directly) to plunger pump and No. 3 axles (directly) to the parallelly connected misphase of plunger pump position fuel feeding; Output flow is No. 1 axle (directly) to plunger pump, No. 2 axles (directly) to plunger pump, No. 3 axles (directly) to plunger pump flow, No. 4 axles (directly) to plunger pump 5 and number axle (directly) to the plunger pump sum; The flow pulsation cycle is reduced to 1/5, is T ₂=pi/2 5, flow pulsation is about Q ₂=0.187%Q ' _Max, can draw No. 1 axle (directly) and be about single axle (directly) to 1/5 of plunger pump with No. 5 axles (directly) to the flow pulsation of the parallelly connected gained of plunger pump to plunger pump to plunger pump, No. 4 axles (directly) to plunger pump, No. 3 axles (directly) to plunger pump, No. 2 axles (directly) ², promptly 1/25.Shown in figure.

Claims (4)

1. misphase position parallel connection combined plunger formula oil hydraulic pump; It is characterized in that; Described misphase position parallel connection combined plunger formula oil hydraulic pump comprise No. 1 axial piston pump (19), No. 2 axial piston pumps (33), No. 3 axial piston pumps (37) ..., M-1 axial piston pump (38), M axial piston pump (39), No. 1 output synchronous pulley (9), No. 2 input synchronous pulleys (1), No. 2 output synchronous pulleys, No. 3 input synchronous pulleys, No. 3 output synchronous pulleys, No. 4 input synchronous pulleys, No. 4 output synchronous pulleys, No. 5 input synchronous pulleys ..., M-1 number input synchronous pulley, M-1 number output synchronous pulley, M number input synchronous pulley, synchronously band (7), 2 to No. 3 synchronously band, 3 to No. 4 synchronously band ... with M-1 to M number band, identical swelling connecting sleeve (15) and the servomotor (18) of Idle wheel (14), a 2M-2 structure that a M-1 structure is identical synchronously, wherein M is the natural number more than or equal to 2;

No. 1 axial piston pump (19), No. 2 axial piston pumps (33), No. 3 axial piston pumps (37) ..., M-1 axial piston pump (38) is installed on the parallelly connected unipump mounting plate (32) that is in vertical position with M axial piston pump (39) through bolt; No. 1 axial piston pump (19), No. 2 axial piston pumps (33), No. 3 axial piston pumps (37) ..., the rotational axis of M-1 axial piston pump (38) and M axial piston pump (39) is parallel to each other and locate in the same horizontal plane; No. 1 axial piston pump (19), No. 2 axial piston pumps (33), No. 3 axial piston pumps (37) ..., No. 1 transmission shaft (10) in M-1 axial piston pump (38) and the M axial piston pump (39), No. 2 transmission shafts (4), No. 3 transmission shafts ..., the input end of M-1 transmission shaft and M transmission shaft is positioned at the right side; No. 1 output synchronous pulley (9) is fixedly mounted on the input end of No. 1 transmission shaft (10) through the identical swelling connecting sleeve (15) of structure; No. 2 input synchronous pulleys (1) are fixedly mounted on the input end of No. 2 transmission shafts (4) through 2 identical swelling connecting sleeves (15) of structure with No. 2 output synchronous pulleys; No. 3 the input synchronous pulley is fixedly mounted on the input end of No. 3 transmission shafts through 2 identical swelling connecting sleeves (15) of structure with No. 3 output synchronous pulleys; No. 4 the input synchronous pulley is fixedly mounted on the input end of No. 4 transmission shafts through 2 identical swelling connecting sleeves (15) of structure with No. 4 output synchronous pulleys; ...; M-1 number the input synchronous pulley is fixedly mounted on the input end of M-1 transmission shaft through 2 identical swelling connecting sleeves (15) of structure with M-1 number output synchronous pulley; M number the input synchronous pulley is fixedly mounted on the input end of M transmission shaft through the identical swelling connecting sleeve (15) of structure; No. 1 output synchronous pulley (9) is connected through being with (7) synchronously with No. 2 input synchronous pulleys (1); No. 2 output synchronous pulleys are with synchronously through 2 to No. 3 with No. 3 input synchronous pulleys and are connected; No. 3 output synchronous pulleys are with synchronously through 3 to No. 4 with No. 4 input synchronous pulleys and are connected; No. 4 output synchronous pulleys are with synchronously through 4 to No. 5 with No. 5 input synchronous pulleys and are connected; ...; M-1 number output synchronous pulley and M number input synchronous pulley through M-1 to M number synchronously band is connected, synchronously band (7), 2 to No. 3 synchronously band, 3 to No. 4 synchronously band ... with M-1 to M number synchronously the outside of band the identical Idle wheel (14) of structure is installed for contacting connection, No. 1 axial piston pump (19), No. 2 axial piston pumps (33), No. 3 axial piston pumps (37) ..., M-1 axial piston pump (38) is connected with axial fuel inlet mouth (a) employing pipeline in the M axial piston pump (39) and be connected with fuel tank; No. 1 axial piston pump (19), No. 2 axial piston pumps (33), No. 3 axial piston pumps (37) ..., M-1 axial piston pump (38) adopts pipeline to be connected with axial pressure hydraulic fluid port (b) in the M axial piston pump (39) and is connected with hydraulic system; The input end of No. 1 transmission shaft (10) of No. 1 axial piston pump (19) or the M transmission shaft of M axial piston pump (39) connects servomotor (18) through coupling, and the axial plunger on the pump housing of a back axial piston pump of adjacent two axial piston pumps from No. 1 axial piston pump (19) to M axial piston pump (39) is 1 misphase parallactic angle β with respect to the axial plunger on the pump housing of previous axial piston pump

The unit of misphase parallactic angle β in formula is a radian

If by angle calculation, following formula is expressed as

2. according to the described misphase of claim 1 position parallel connection combined plunger formula oil hydraulic pump; It is characterized in that, described No. 1 axial piston pump (19), No. 2 axial piston pumps (33), No. 3 axial piston pumps (37) ..., M-1 axial piston pump (38) is identical with M axial piston pump (39) structure; No. 1 output synchronous pulley (9), No. 2 input synchronous pulleys (1), No. 2 output synchronous pulleys, No. 3 input synchronous pulleys, No. 3 output synchronous pulleys, No. 4 input synchronous pulleys, No. 4 output synchronous pulleys, No. 5 input synchronous pulleys ..., M-1 number output synchronous pulley is identical with M number input synchronous pulley structure, synchronously band (7), 2 to No. 3 synchronously band, be with synchronously for 3 to No. 4 ... identical with M-1 to M number synchronous band structure.

3. misphase position parallel connection combined plunger formula oil hydraulic pump; It is characterized in that; Described misphase position parallel connection combined plunger formula oil hydraulic pump comprise No. 1 radial plunger pump (34), No. 2 radial plunger pumps (35), No. 3 radial plunger pumps (40) ..., M-1 radial plunger pump (42), M radial plunger pump (43), radially export synchronous pulley (30) for No. 1, radially import synchronous pulley (29) for No. 2, radially export synchronous pulley for No. 2, radially import synchronous pulley for No. 3, radially export synchronous pulley for No. 3, radially import synchronous pulley for No. 4, radially export synchronous pulley for No. 4, radially import synchronous pulley for No. 5 ..., M-1 number radially import synchronous pulley, M-1 number radially export synchronous pulley, M number radially import synchronous pulley, radially synchronously band (36), 2 to No. 3 radially synchronously band, 3 to No. 4 radially synchronously band ... with M-1 to M number radially band, identical swelling connecting sleeve (15) and the servomotor (18) of Idle wheel (14), a 2M-2 structure that a M-1 structure is identical synchronously, wherein M is the natural number more than or equal to 2;

No. 1 radial plunger pump (34), No. 2 radial plunger pumps (35), No. 3 radial plunger pumps (40) ..., M-1 radial plunger pump (42) is installed on the parallelly connected combined radial pump mounting plate (41) that is in vertical position with M radial plunger pump (43) through bolt; No. 1 radial plunger pump (34), No. 2 radial plunger pumps (35), No. 3 radial plunger pumps (40) ..., the rotational axis of M-1 radial plunger pump (42) and M radial plunger pump (43) is parallel to each other and locate in the same horizontal plane; No. 1 radial plunger pump (34), No. 2 radial plunger pumps (35), No. 3 radial plunger pumps (40) ..., in M-1 radial plunger pump (42) and the M radial plunger pump (43) No. 1 radially transmission shaft (31), No. 2 radially transmission shaft (28), No. 3 radially transmission shaft ..., M-1 number radially transmission shaft and M number radially the input end of transmission shaft be positioned at the right side; Radially export synchronous pulley (30) for No. 1 and be fixedly mounted on No. 1 radially on the input end of transmission shaft (31) through the identical swelling connecting sleeve (15) of structure; Radially import synchronous pulley (29) for No. 2 and radially export synchronous pulley for No. 2 and be fixedly mounted on No. 2 radially on the input end of transmission shaft (28) through 2 identical swelling connecting sleeves (15) of structure; Radially import synchronous pulley for No. 3 and radially export synchronous pulley for No. 3 and be fixedly mounted on No. 3 radially on the input end of transmission shaft through 2 identical swelling connecting sleeves (15) of structure; Radially import synchronous pulley for No. 4 and radially export synchronous pulley for No. 4 and be fixedly mounted on No. 4 radially on the input end of transmission shaft through 2 identical swelling connecting sleeves (15) of structure; ...; Radially import synchronous pulley for M-1 number and radially export synchronous pulley for M-1 number and be fixedly mounted on M-1 number radially on the input end of transmission shaft through 2 identical swelling connecting sleeves (15) of structure; Radially import synchronous pulley for M number and be fixedly mounted on M number radially on the input end of transmission shaft through the identical swelling connecting sleeve (15) of structure; Radially export for No. 1 synchronous pulley (30) with radially import for No. 2 synchronous pulley (29) through radially synchronously band (36) be connected; Radially export for No. 2 synchronous pulley with radially import for No. 3 synchronous pulley through 2 to No. 3 radially synchronously band be connected; Radially export for No. 3 synchronous pulley with radially import for No. 4 synchronous pulley through 3 to No. 4 radially synchronously band be connected; Radially export for No. 4 synchronous pulley with radially import for No. 5 synchronous pulley through 4 to No. 5 radially synchronously band be connected; ...; Radially export for M-1 number synchronous pulley with radially import for M number synchronous pulley through M-1 to M number radially synchronously band is connected, radially synchronously band (36), 2 to No. 3 radially synchronously band, 3 to No. 4 radially synchronously band ... with M-1 to M number radially synchronously the outside of band an identical Idle wheel (14) of structure be installed connected for contact, No. 1 radial plunger pump (34), No. 2 radial plunger pumps (35), No. 3 radial plunger pumps (40) ..., M-1 radial plunger pump (42) is connected with radially filler opening (m) employing pipeline in the M radial plunger pump (43) and be connected with fuel tank; No. 1 radial plunger pump (34), No. 2 radial plunger pumps (35), No. 3 radial plunger pumps (40) ..., M-1 radial plunger pump (42) adopts pipeline to be connected with radially pressure hydraulic fluid port (n) in the M radial plunger pump (43) and is connected with hydraulic system; No. 1 of No. 1 radial plunger pump (34) radially transmission shaft (31) or M radial plunger pump (43) M number radially the input end of transmission shaft connect servomotor (18) through coupling, from No. 1 radially the radial plunger on the pump housing of a back radial plunger pump of adjacent two radial plunger pumps transmission shaft (31) to the M radial plunger pump (43) be 1 misphase parallactic angle β with respect to the radial plunger on the pump housing of previous radial plunger pump

The unit of misphase parallactic angle β in

formula is a radian

If by angle calculation, following formula is expressed as

4. according to the described misphase of claim 3 position parallel connection combined plunger formula oil hydraulic pump; It is characterized in that, described No. 1 radial plunger pump (34), No. 2 radial plunger pumps (35), No. 3 radial plunger pumps (40) ..., M-1 radial plunger pump (42) is identical with M radial plunger pump (43) structure; Radially export synchronous pulley (30) for No. 1, radially import synchronous pulley (29) for No. 2, radially export synchronous pulley for No. 2, radially import synchronous pulley for No. 3, radially export synchronous pulley for No. 3, radially import synchronous pulley for No. 4, radially export synchronous pulley for No. 4, radially import synchronous pulley for No. 5 ..., M-1 number imports radially that synchronous pulley, M-1 number are radially exported synchronous pulley and radially to import the synchronous pulley structure M number identical; Radially synchronously band (36), 2 to No. 3 radially synchronously band, 3 to No. 4 radially synchronously band ... radially synchronously band structure is identical with M-1 to M number.

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