FR2531151A1 - HYDRAULIC CONTROL DISTRIBUTOR, IN PARTICULAR FOR PUBLIC WORKS MACHINERY - Google Patents

Abstract

THE INVENTION RELATES TO A DISTRIBUTION APPARATUS FOR THE CONTROL OF HYDRAULIC CIRCUITS. THE DISTRIBUTOR IS FORMED BY THE JUXTAPOSITION OF ELEMENTARY BLOCKS 1 DISTRIBUTOR CAPS 3. THE ASSEMBLY IS BY TENSIONS 8. APPLICATION: VERSATILE HYDRAULIC DISTRIBUTOR ADAPTABLE TO VARIOUS HYDRAULIC CIRCUITS, ESPECIALLY FOR PUBLIC WORKS UNITS.

Description

The present invention relates to a

  hydraulic tater t intended in particular for

  "The different receivers of a hydraulic circuit"

  These actuators are powered by distributors O, by enabling or

  not the passage of fluid under pressure t control the ma-

  In addition, they comprise control elements such as discharge valves, check valves, a receiver or a group of test receivers connected to a distributor, which itself is connected to the control unit.

  pump or other dispenser, and to the tank.

  do a large number of connection pipes when the number of receivers is important; This is particularly the case for public works machinery. Connections are known to limit the number of pipes. For example t in the French patent 76 A 08 318 discloses a hydraulic distributor which is in the form of a block E This has a d 9 and 1 oifioe for the fluid under pressure, and a port of outlet for the fluid that returns to the tank O liasons with distributors that are mounted directly on a

  its faces t and the connections with the organs r 4 cepteurs.

  This distribution block is adapted to a circuit

  born and can not be changed A builder will have to

  have a type of splitter block for each type of

  In addition, if you want to add a function to a given machine, for example by adding an auxiliary arm equipped with a jack, you will have to either change the entire block t or modify the hydraulic circuit by adding 1 The object of the present invention is to avoid these disadvantages by producing a versatile hydraulic distributor. A hydraulic distributor according to the invention, in particular for construction machinery, is characterized

  in that it is constituted by the assembly of blocks 6 lemen-

each block including

  means to connect to the inputs and outputs

from a distributor;

  communication ports with the elec-

  adjacent areas; connection ports to the pipes which supply fluid to the receiving members;

  internal pipelines that make connections between

  appropriate sounds between these different orifices;

  an input block t connected to a power supply line

  high pressure fluid # and an outlet block connected to a return line to the tank, being

besides provided.

  According to another characteristic of the invention, the elementary blocks are divided into two categories t

  block called the "series" which makes it possible to link the

  distributor parts placed, upstream of the flow, on the adjacent block #aix inputs distributor it supports; said parallel block t which connects the inputs of the adjacent block to the inputs of the distributor that it supports an intermediate plate to achieve

  the junction between two blocks of different types.

  According to another characteristic of the invention, each elementary block comprises two parallel flat faces which have the connection orifices with the other blocks against which the flat faces of the adjacent blocks are applied, the assembly being clamped by any means. for example, tie rods; a flat face perpendicular to the preceding, on

  which is mounted the distributor.

  According to another characteristic of 1 '

  invention, all hydraulic devices annexes of the dis-

  tribulator t such as non-return valves t limiters

  pressure δ, are made as removable assemblies

  t fixed on the elementary blocks.

  The attached drawing is given as an example

  4 non-exhaustive, will provide a better understanding of the

features of the invention.

  Figure 1 is a perspective view of the distribution block s Uninterrupted Figure 2 is a front view of the same 9 distribution block. Figure 3 is a sectional view taken along the direction of a basic unit N series and its distributor Figure 4 is a sectional view along the II II direction of this block.

  Figure 5 is a sectional view along the di.

  Rection I I, of an elementary block called "parallel N and its distributor Figure 6 is a sectional view along the direction III III of this same block

  Figure 7 is an e-view taken along the di-

  FIG. 8 is a front view of the connecting plate between a modular U-block element and a "series 1" elementary block. FIGS. 1 and 2 show a distribution block according to the invention. , composed of several elementary blocks 1 D 2 v integral with five distributors 3 * The distributor also comprises mn input block 4 and an output block 5 o The elementary blocks are divided into two categories g series block 1 9 and parallel block 2 A connecting plate 6 connects the two diffrrent type blocks. The assembly of the Slémenmaiwes blocks is done by tie rods 58. Each distributor comprises, in a known manner, a drawer 9 which slides in a body 9 to put in communication with one another 9. number of annular chambers 1 i 1 under the control dtun piloting 12 'All the annular chambers are in comunication with ducts which open on the fmce 13 of the dismtibute body, this face is

  applied to the top face 114 of the M elementary block

  re 1 or 2 9 this Lace being pierced

2531151

  posed to come exactly opposite the orifices

of the face 13.

  An elementary block "series N 1 is

  shown in FIG. 3 and in FIG. 4 It has, on its face 13 t, seven orifices 15 t 16, 17, 18, 19 t 20, 21, 22 respectively.

  two orifices 24, 25 to the two parallel faces which co-

  adjacent blocks each have three original

  fices The face which is in amprt with respect to the flow presents the orifices 26, 27, 28 The face which is st

  Downstream presents the orifices 29, 30, 31 of the channels.

  read inside block X the following links:

  a first return link connecting the

26 and 29; -

  a second return pipe which connects the orifices 27 and 30;

  a high-pressure pipeline that connects

  fices 28 and 18, this pipe having a common point with the channel connecting 19 to 20; an application duct which connects the orifices 16 and 24; a second use channel which connects the orifices 17 and 25; a starting pipe which connects the orifices 22 and 19 to the orifice 31,

  Two discharge valves 32 and 33 are provided

  On the sides of the block They control the pressure of the two lines of use t the excessive fluid being rejected in the return pipes To In addition, a non-return valve 34 is placed in the high-pressure pipe, the orifices 26, 27 t 28 are arranged so as to come exactly opposite the orifices 29 e 30,

  31 of the adjacent block, located to the lover in relation to the

  o The operation is as follows

  When the dispenser is at rest and

  high pressure "enters N the block through the orifice 289 arrives at the distributor by the high pressure pipe and out of the block by the pipe dd part of the drawer being placed so as to allow the circulation between the orifices 18, and 22 g 21 b When the dispenser is in the working position, the previous communication is interrupted;

  high-pressure fluid is sent to the dispenser by one of the

  19 and 20 I a connection is established between one of these orifbes and an orifice 16 or 17; by means of one of the use channels, the high pressure fluid arrives at the receiving member e the other use channel receiving the fluid in return for this body t a connection at the distributor 3 allowing this fluid to pass into the

departure channel.

  With this type of block, the high-pressure fluid in any case passes through the distributor o Qu Qnd

  this one is in working position, Oe high fluid pres-

  Also, a "parallel" block has on its face 13, seven orifices 35, 36, 37, 38, 39, 40, 41. Its lower face comprises two orifices 42, 43. The face connected to the block adjacent upstream of the flow, has the orifices 44 # 45, 46, 47 * the face connected to the adjacent downstream block having the orifices 48 S 49, 50 P 51 C

  The orifices of the upstream and downstream faces come

  are exactly opposite each other x Channels realize, within the block * the following links t

  a first return link connecting the ori-

  these 44 and 48> another channel connecting them &36;

  a second return link connecting the ori-

  these 45 and 49 t another channel linking them to 47?

  a high-pressure pipeline that connects

46, 51 and 40;

  a first user house that links the origi-

  Facts 38 and 42; a second utilization link which connects: the orifices 39 and 43; a "cascade" link connecting 37 to 47; a second connection "cascade" n connecting 35 to 50 e two check valves 52 and 53 control

  the pressure in the channels of use, the excess fluid

  sit being rejected in the return lines Two feed valves 54 and 55 are mounted on these channels of use. Operation is the following S

  When the distributor is at rest at the

  the pressure passes through the block through the high pres-

  if we; a part of the fluid passes through the dispenser: it arrives through the "cascade" orifice 37 a out of the block 47 through the dispenser i joined the block by 35 and finally leaves 50 'l When the dispenser is in working position p the high-pressure fuide passes through the days

  block from 46 to 51, but some of the fluid

  bank to the dispenser through the orifice 40, trapse the distribution

  scorer being directed towards one of the use orifices 38 or 39 t the other orifice being connected to one of the orifices of

  back 36 iu 41 g the waterfall connection is cut off.

  We see that with this block only one part of the fluid passes through the distributor t

  To ensure the connection between the blocks 14-

  The series' v 'and the elementary blocks' parallel * $ have junction plates 6 They have two parallel faces which are attached to one another 55 following the block w series "to the other 56, on the block u parallel u The face

  has three holes 57 t 58> 59 t the face 56 presents

  four orifices 60 t 61, 62 to 63 The orifices 57 58 are exactly opposite the orifices 29 t 30; then the orifice 59 is opposite the orifice 28 or 31 The orifices 60 and 61 are opposite the orifices 48 or 44 and 49 or 45, whereas the orifice 62 is opposite an orifice 46 or 51, and the orifice 63 opposite an orifice 47 or 5 '. Channels realize, within the block t the following connections: a return link between 57 and 60; a second return connection between 59 and 61 l a high pressure connection between the orifices 59,

62 and 63.

  This plate thus allows the junction between 4 o the different return channels of the blocks and between the pressure channels and "cascade" o It also provides an input block 4 o This block fits either a series block or a parallel block via a junction plate 6, or vice versa e I 1 has on its face which fits the block, either an orifice (adapting su r 28 of a series block), or two orifices ( adapting to 37 and 46 of a parallel block) I 1 comprises an orifice 9 for the high pressure fluid $ and possibly a pressure control valve 8 in

  this case, it will be connected to one of the return channels of the blocks.

  It is also necessary to have an output block 5 e As the block 4 O it fits on a series block or on a parallel block g by means of a plate 6 or quickly El varsa present on its face which accommodates the block S is three orifices (s Adapting on 29,

  and 31) three other orifices, arranged differently

  on 48 48 49 50 of a pawall'le block,

the orifice 51 being plugged.

  This block 5 also includes a return port to the tank The advantage of such a device is understood: all the connections between the distributors are made via the distributor block, the compartments comprising mobile units (distributor valves) are easily removable? It is not necessary to disconnect the flexible pipes for this dismantling; A large number of elementary blocks can be connected by alternating the N series and parallel blocks at will. If the device is polyralent, any hydraulic diagram can be produced for any number of binary elements from the same sources. basic building blocks,

  In the previous example, we have

  distributors who can take three positions

  which control two ways of use o We do not

  did not draw from the framework of the invention by designing elementary blocks that could support

  several positions, controlling more than two channels of

satiou O

  In the same way, it would not be appropriate to

  vention by building lofer blocks 4 supoortant

two or more distributors.

Claims (5)

  Hydraulic distributorparticularly for construction machinerycharacterized in that it is constituted by the assembly of elementary blocks, each block comprising means for connecting to the inputs and outputs of at least one distributor; means for adapting to the adjacent elementary blocks;   -connections to the pipes that supply   at least one receiving member is fluid; internal channels which make the appropriate connections inside the block, means being provided for supplying the distribution block with high pressure fluid and connecting it to the pipes of back to the tank.   2. Hydraulic distributor according to claim 1,   characterized in that the elementary blocks are distributed   are divided into two categories: - "parallel" elementary block (2) which is traversed by at least one vein of high pressure fluid, this passage being   direct, irrespective of the position of the drawer (9) of the   scorers (3) that he supports; elementary "series" (1), such as all veins   high pressure fluid passing through it, are   by the distributors (3) it supports.   3.Hydraulic distributor, according to any one of   preceding claims, characterized in that each   elementary block (1), (2) comprises:   two parallel flat faces which present   these (26,27,28,37,46 ,,) connecting with the other elementary blocks against which the identical faces of the adjacent blocks are applied; a plane face perpendicular to the preceding ones (13), having orifices (38, 39, 16, 17, 18) connected to internal ducts of the block, this face being integral with the distributors which comprise a plane face having orifices connected to the different annular chambers (11) of the body (10) of the dispenser, so that the orifices come in correspondence two by two when the two flat faces are applied against each other; a face opposite to the face (13) which has the orifices (24, 25, 42, 43 o) connected by internal pipes to certain orifices of the surface (13), these orifices   connecting to the hydraulic receiver lines.   4 Hydraulic distributor according to the claim   3, characterized in that all the auxiliary members of the distributor (3) t such as feeding valves (54, 55), discharge valves (32, 33) are made in the form of removable assemblies fixed on the elementary blocks- Hydraulic distributor according to claim 3, characterized in that the elementary blocks (1), (2) support only one distributor (3).   6 Hydraulic distributor according to any one   than the preceding claims, characterized in that   it has a basic input block (4) and a block elementary output (5).   7 Hydraulic distributor according to any one   previous claims, characterized in that 1   a junction plate * (6) connects a block of   eg "series" to a block of type "parallel" S or vice versa Sae   8 Hydraulic distributor followed, any one   than the preceding claims, characterized in that   the assembly of the elementary blocks is done with the aid of tants (8). 3 o