JPS59187928A - Working arm for civil engineering machine and foundation construction machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises an upper arm which is pivotably attached to an earth-moving machine or a foundation-working machine or via a boom, and which is pivotally attached to the upper arm and carries a tool. An earth-moving machine or foundation for storing and guiding tools, consisting of a lower arm that moves the upper and lower arms from an extended position to a folded position in which both arms are juxtaposed, and then to a position where they are extended in the opposite direction. Regarding work arms for construction machinery.

This main working arm with a shovel is known from DE 31 06 268 A1 in the name of the applicant. The working arm, by means of a multi-articulated rond pivoted to the boom and connected to the upper arm, guides the dipper along a curved forced travel path to the discharge location and returns along the same travel path to the excavation location. In this case, B. - The disadvantage is that the direction of the forced travel path can only be changed by pivoting the arm upwards or by tilting it, and that the curvature of the forced travel path is determined by the rond and cannot be articulated. Furthermore, a straight path of travel cannot be achieved with the rondo. These drawbacks hinder normal use. - The object of the present invention is that it can be used not only for guiding excavators but also for guiding other tools, enables forced movement in a straight line, and allows selection of the direction and distance of movement. The object of the present invention is to improve the known working arm in such a way that the forced travel path can be curved over part or over its entire length. It should be possible to switch between working stroke and retraction in case of rapid reversal. It should be possible to guide the tool unchanged during forced movements. However, in the case of excavators, it should be possible to transport them in different conditions.

This problem is solved by the features described in claim 1 as a basic configuration, and by the features described in claims 2 to 3.
This is solved even better by the embodiment described in item 10.

The patent claims 2 to 4 indicate various embodiments of the synchronization device, and the patent claim 5 indicates means for guiding the tool in the direction of the forced travel path. In order to reverse the working direction during a quick retraction, the features according to claim 6 are proposed, and in order to improve the conveying conditions of the excavator, the features according to claim 7.8 are proposed. is proposed. Claim 9.10 shows means for guiding the tool straight when the lengths of the upper and lower arms are unequal.

These solutions have the following effects.

If the length between the hinges of the upper and lower arms is the same, the various tools, i.e. attachments, are guided along a straight forced travel path, the direction of which can be deflected by the base link. , and the length of the forced travel path is approximately twice the sum of the lengths of the upper and lower arms. With a suitable arrangement of the drive, which consists primarily of hydraulic cylinders, the thrust and velocity remain approximately constant over the entire length of the travel path. The drive stroke can be shortened to any length at either end of the travel path.

By performing a linear movement and a rotational movement of the base link simultaneously, the forced travel path can be curved to one side or the other over its entire length or part. This allows the molding operation to be well adapted to the actual task. In the basic device, this working arm is suitable for moving hooks, grabs, etc. If the arm length is the same, this hook or the like moves up and down in a straight line or horizontally.

Tools must be guided in a constant manner relative to the direction of the forced travel path, and at the same time must be guided straight and with their axis pointing in the direction of travel, such as drills, piling tools, tension tools, exciters, etc. must be guided. In the case of shovels and earthmoving blades, the position of the digging blade relative to the ground remains unchanged during digging. In order to prevent the excavated material from falling during the subsequent movement to the growing site, it is necessary to rotate the shovel into the transport position by means of claims 7 or 8.

By changing the pivot point of the lifting cylinder, the return stroke to one or the other can be performed quickly. This allows drills, hammers or pulling tools to be used with optionally larger lifting or lowering blades. The excavator or earthmoving blade can be mounted as a choice, i.e. for digging in the direction of the conveying device or for digging away from the conveying device, like a lifting or loading shovel. can. The upper and lower slopes of the running surface can be cut or graded in both working directions.

This working arm provides repeatable and precise forced movements for precision during excavation, grading, shaping operations, layer cuts, layer fills, slope compensation and compaction, trench cleaning and similar operations. Extremely suitable for various types of work.

The figure schematically shows an embodiment of the invention.

The upper arms 1 and 2 are supported on the transport vehicle or its boom by means of a pivot shaft 3 and can be rotated with variable motion by means of a directional cylinder 14. An elevating cylinder 5 for driving the upper arm 1 and a connecting rod 6 are pivotally attached to the base link 2 . This connecting rod has the same length as the upper arm 1 and is arranged parallel to it and guides the parallel link 7 parallel to the base link 2.

The upper arm 1 and the lower arm 10 are supported coaxially on a parallel link 7 by means of a synchronizer. This synchronizer drives the lower arm 10.

In FIGS. 1 to 3, the synchronizing device is designed as a reversing device. The housing 33 of this reversing device with bevel gear pinion 8 is fixedly connected to the parallel link 7 . The bevel gear pinion 8 meshes with a drive gear 11 fixedly connected to the upper arm 1 and a driven gear 12 fixedly connected to the lower arm 10. This driving and driven gear 11.12
Thus, when the upper arm 1 is rotated relative to the reversing device casing 33, the lower arm 10 performs the same angular movement in the opposite direction relative to the reversing device casing 33. If the upper arm 1 and the lower arm 10 are of the same length, the free end of the lower arm 10 will undergo a linear movement. Since the upper arm 1 and the lower arm 10 are located in different planes, they can be moved from an extended position through an intermediate position where they are side by side to an extended position in the opposite direction. The free end of the lower arm 10 thus performs a working stroke movement in a straight line whose length is proportional to the length of the arm.

The lifting cylinder 5 is pivotally connected to the base link 2 and the upper arm 1 as follows. That is, the lifting cylinder is pivoted so that it acts on the upper arm 1 with the same short lever length at the beginning and end of the stroke movement and with a longer lever length in the intermediate position.

As a result, the hook 13 or the tool 16 moves with approximately the same feed force and feed rate over the entire forced travel path.

The tool link 15 is connected to the lower arm 10 as shown by the dashed line.
The tool link 1 is guided in parallel by a rond 18 of the same length as the lower arm, pivoted on the free end of the lower arm IO and parallel to the parallel link 7 parallel to the lower arm
The tool 16 coupled to the tool 5 can be moved in an uncertain motion over long distances, with the longitudinal axis of the tool pointing in the direction of movement. This allows the working arm to
Extremely suitable for guiding earthmoving, drilling, piling and pulling equipment, and for keeping excavation tools in the cut state. The tool link 15 can be attached to all synchronizers.

In FIGS. 4 and 5, the synchronizer is formed by mutually meshing spur gear segments 24, 25 of the same size.

This spur gear 24 is attached to a connecting rod 6 which is designed as a curved carrier, and the spur gear 25 is firmly attached to the lower arm 10.

If the connecting rod 6 and the parallel link 7 are provided on different sides of the upper arm 1, the spur gears 24, 25 are suitably twisted.

A hydraulic synchronizer is shown in FIG. 6.7. The lower arm 10 is driven by a lower arm cylinder 37. This cylinder is supported by a parallel link 7 and its piston rod is pivotally mounted to a lower arm 10. The lifting cylinders 5 and the lower arm cylinders 37 are cyclically oiled from one hydraulic pump or from a common pump 39 via a flow divider 38. The illustrated flow divider consists of two hydromotors 40, 41 whose shafts are connected to one another.

Therefore, the different cylinder pressures become equal. Directional control valves 42 and 43 are provided on the inflow side and at the bottom of the station.

Figures 8 to 10 show how large lifting forces or lowering edges are obtained when lifting and lowering the drill 30.31.32. In this case, the reversing device housing 33 of FIG. 1.2 is used as a synchronizing device. 9.10, the same lifting cylinder 5 as in FIGS. 1 and 2 is pivoted to the pivot eye 27 of the base link 2, and its piston rod to the pivot eye 29 of the upper arm 1. This provides a large lifting force. However, in FIG. 8, the lifting cylinder 5 is reattached to the other pivot eye 26 of the upper arm 1 in order to obtain a large descending blade.
The piston rod is then inserted back into the additional pivot eye 28 of the parallel link 7. This reinstallation, ie, attachment to another pivot eye, is easy. This is because the pivoting eyes 26 and 27 for the lifting cylinder 5 overlap exactly at the lower end position, so that the reinstallation bin can be slid and attached to another pivoting eye. At that time, the piston rod must be expanded and contracted. The pivot eyes 28 and 29 of the piston rods overlap in the upper end position. If instead of the drill 30 a shovel 17 or a grader blade with connecting rod 18 as shown in FIG. must be installed on the For this purpose, the rod 18 in FIG. 1 or the hydraulic cylinder 2 in FIG.
0 piston rod 21 is pivotally connected to the pivot eye 44, i.e. to the other end of the parallel link 7, and the shovel link 19 with the shovel 17 and its drive 34, 35, 36
It can be installed with a 0 degree rotation.

11.12 only the parallel link 7 with the reversing device casing 33 and the lower arm 10 shown in FIG. 1 are shown, which are in an intermediate raised position. Furthermore, instead of the tool link 15, a shovel link 19 with a shovel 17 is shown. This shovel is rotatable by a shovel cylinder 34 via a lever 35 and a rod 36 from a digging position to a growing position.

In order to prevent the excavated material from falling from the shovel when the shovel 17 is forcibly moved horizontally to the excavation site, in FIG. 11, the rod 18 shown in FIG. When the piston rod, which is replaced by the cylinder 20, is retracted into the cylinder and shortened, the shovel 17 rotates into the transport position.

FIG. 12 shows three states of another embodiment. The rod 18 is pivotally connected to an adjustment lever 22, which is supported by a parallel link 7 and connected to an adjustment cylinder 23.
adjusted by. Even when the piston rod of this adjustment cylinder is pulled into the cylinder to the lifting start position, the attitude of the shovel 17 does not change for the time being. During this lifting, the shovel guide member 19 gradually rotates to the transport position. The two transport positions are started or stopped at a certain point in time by moving the piston rod of the hydraulic cylinder 20 or the adjusting cylinder 23 in opposite directions.

A direction cylinder 14 pivotally mounted on the transport vehicle or its boom 4 determines the direction of the forced travel path by rotating the base link 72. In this case, the base link 2 can be mounted in the direction of the transport vehicle or in the opposite direction, as shown by the dashed line in FIG. 1st'
, 4, 6.9 When the piston rod of the cylinder 14 expands and contracts during lifting, the linear motion of the tool and the rotational motion of the base link 2 about the pivot shaft 3 are combined, resulting in a complete circular motion. Tools 13. '16. Perform 17 or 30 curved forced movements.

[Brief explanation of the drawing]

FIG. 1 shows the working arm in the starting position of the lift, with the hook, the tool link shown in dash-dotted lines, the digging or piling tool and the synchronizing device in the form of a bevel gear reversing device; FIG. is a partially cutaway side view of FIG. 1, FIG. 3 is a plan view of FIG. FIG. 6 shows an embodiment of the working arm with a lower arm cylinder as a synchronizer and a flow divider;
FIG. 7 is a side view of FIG. 6, and FIG. 8 shows an additional pivot eye for the lifting cylinder for switching the working direction and a drilling tool in position to create a large penetration force. , FIG. 9 shows the working arm of FIG. 8 remounted to produce greater lifting forces, and FIG. 10 shows the working arm similar to FIG. 9 in side view, FIG. 11 showing the lower arm with the shovel which can be rotated into the transport position by means of a collapsible connecting rod, and FIG. 12 adjustable pivoting in three positions. 12 shows a lower arm with a shovel similar to FIG. 11 with a connected connecting rod; FIG. 1...Upper arm 2...Bae Slifuku 3...
・Pivot shaft 4...Boom 5...Elevating cylinder 6...Connecting rod 7...Parallel link 9...Axis 10...Lower arm 14...Direction cylinder Fig
, 4 Fig, 5 procedural amendments! II April 1956 2711 Commissioner of the Japan Patent Office Kazuo Kukubo 1 Indication of case (e p > 3 > p and the basics of the work arm 3 of the double mechanical nodule.
(Please note to the applicant) Name: Fuco Cordes 4 Agent address: 32-4, 21'' Nishi-Shinbashi, Higashi-ku, Tokyo
Straddle Kaji Kogyo Building Episode 4I (433) 4 5 6 4
Figure 105, page 7, contents of correction Figures 6 and 11 will be replaced. Procedural Amendment ■, Small Case Table/Je Special Revision Application No. 62383 of 1982
Copy 2, Title of the invention -1-T-Machine and basics 1 Working arm for the machine 3, person making corrections 1'1 and Q) Sekibe Toku 3''Dera J person 1 (
Refuco Cortez 4, Agent 〒60
4 6. Number of inventions increases due to amendment 7 Amendment! A elephant Ming and I book, special 1? 'The contents of the amendment in column 8 of the scope of claims (11, 111) and the section of the scope of claim J1 are supplemented as shown in the attached IE. (1) Earthwork J: Take W foundation 1'1■ for guiding tools
(Operation 7'-1 of the machine, (a) Piho-so 1~Bin (3) (b) a lower arm 1, (10) pivotally connected to said upper arm and supporting a tool; (c) said upper arm; (d) a drive mechanism for moving the arm and the F'llf arm from the extended position to the extended position in the opposite direction via parallel overlapping positions of both arms; I bottle (3
) and pivoted around said fin by a directional cylinder (14) supported on said boom (4); (e) an upper arm cylinder (5) driving said upper arm (1); )a, Connect the connecting rod (6) parallel to the upper Jj-j'-m and of the same length to IRl [E, the upper arm cylinder and the connecting rod can be rotated to the heath guide (2). connected to, and furthermore, <r> the one j'-1-, O, and -1;
-1) Rotatably supported at the connecting point (9]) between
); and (g) an equiangular movement device connected to the parallel guide (7), and by means of this equiangular movement device, the parallel guide is I, 7 F7% 1ff that the downward arm 1, (10), and chisel arm (1) are made to have an equal or negative angular deflection.
I made Arno. (2) The above-mentioned equal fjq degree movement device has a height + 'J1 ton reversal t
i% (consists of a reversing machine 111i with fi
Sink (:(:l) is the lower arm (lO) and the upper one
′ and the parallel beam (1), and the parallel beam l′
(7) and supporting a bevel gear bean (8), said paddle gear binion (8) being rigidly connected to said - direction (1). Drive bevel gear (
11) OJ and the lower arm (10) firmly 3! I
! The operating unit according to claim 1, which is meshed with a driven gear (12). (3) The equiangular movement device is supported by the one-line guide (7), and is connected to the same=- earth truck segments 1 to (24), (25>), which are meshed with each other, and (25>, -') j flats. The gear segment (211) is t'itt against bending stress.
The other spur gear segment (25) is rigidly connected to the reinforced connecting rod (6), and the other spur gear segment (25) is connected to said lower Arnault, (10)
An operating arm according to claim 1, which is rigidly connected to the operating arm. (4) The equiangular movement device includes an F cylinder (37) rotatably connected to the parallel guide (7);
The piston rod (10) rotatably connected to the lower arm (10) and the lower arm (10) between the cylinder (5) and the lower arm cylinder (37)? & j, (- The operating arm according to claim (1) consisting of a divider (38) for dividing the flow of high-pressure oil from the pump (39). (5) The rod (18) is Rotatably connected to said parallel guide (7), said rod (18) is parallel to said lower arm (10) and is of the same length, -1-
Tool chi F' (1
5) to +11 (parallel guy 1 1' line.J
(1) The operation described in claim (1). ((j) i) An additional pivot ring (26) is placed at the above-mentioned 7-no, (1), and this pivot ring (26) is attached to the end of the strut. Aligned with the hair ring (27) of the base guide 2), the additional pivot hair link (28) is placed at 1 (7) with the forward force ]・The link (2B) is connected to the other end of the string 1 and the above-mentioned upper
'-Mushi 11-turn (5) piston [1 piece 1- piece,
: It is aligned with the R ring (29) to the second pivot, and has a large lifting force of 15 degrees.
) 5 arm cylinder (5) is connected to the base guide (2) (
Remove I; I cut, bend] Pipistohun I. is attached to the pivot of the J knee ji arm (1) (29)
When it is taken (: tlJ) and a large pushing force of 4 A is required, the 1st direction is 1, and the shilling (5) is in the direction of -i.
It is attached to a bihot bearing (2G) with l-< 1), and its screw l' is attached to the pivot ring (28) of the parallel guy F (7). Operation-5 described in claim (1)
'-J. (7) The above-mentioned rods 1 to 1B are extension screws 1 to 1 [J1
, (21), the piston r+
is shortened by the regression of the
・Special A with Riichito Gaito (19) that can be rotated
'[The operating arm according to claim (5). (8) The lot (18) is attached to the adjustment lever (22) at 1i.
i-1! VII+ is removably connected to the adjustment lever (2).
2) is rotatably connected to the parallel guide (7),
The operation A1 according to claim (5), which can be adjusted by a 1,1-section shilling (23). (9) The lengths of the upper and lower arms (1) and (10) are non-uniform, and the fuselage hider (3B) is composed of a fixed capacity motor (40) and a variable capacity motor (41) for forced movement. When the above one-way arm cylinder (5)-
The operating arm according to claim 4, wherein a changing ura flow different from the \ flow is distributed to the lower 1-m cylinder (37).

Claims (6)

[Claims] (1) An upper arm that is pivotally connected to the earth-moving machine or foundation construction machine or via a boom, a lower arm that is pivotally connected to the upper arm and carries a tool, and an upper arm. and a drive device that moves the lower arm from the extended position, through the folded position where both arms are lined up, to the extended position in the opposite direction. (2) is supported on the pivot axis (3) of the upper arm (1) and is rotatable about the pivot axis (3) by means of a directional cylinder (14) carried on the boom (4); (1) The ascending cylinder (5
) and a connecting rod (
6) is pivotally connected to the base link (2), and the parallel link (7) is connected to the upper arm (1) and the lower arm (10).
is rotatably supported on the shaft (9) between the connecting rod (
6) to run the guide parallel to the base link;
Connect the lower arm (10) and upper arm (1) with a parallel link (
A working arm characterized in that a synchronizing device is connected to the parallel link (7), each deflecting in opposite directions by the same angle with respect to (7). (2) the synchronizing device is formed as a reversing device, in particular a bevel gear reversing device, the casing (33) of this reversing device being arranged concentrically with the pivot of the lower arm (10) on the upper arm (1); and fixedly connected to the parallel link (7);
It carries a bevel gear pinion (8), which meshes with the drive bevel gear (11, 12), and which drives the drive bevel gear force (upper arm (1) and lower arm (10) respectively).
2. The working arm according to claim 1, wherein the working arm is fixedly connected to the working arm. (3) A connecting rod (6) in which the synchronizer is supported on parallel links (7) and formed by identical spur gear segments (24, 25>) meshing with each other, one spur gear segment (24) being formed as a curved carrier. ) and the other spur gear segment (25) is fixedly connected to the lower arm (10). (4) The synchronizer consists of a lower arm cylinder (37) pivotally connected to the parallel link (7) and a flow divider (38), and the piston rond of this lower arm cylinder is connected to the lower arm (
10), characterized in that a flow divider distributes the pressure oil of the hydraulic pump (39) to the lifting cylinder (5) and the lower arm cylinder (37). (5) The rod (18) has the same length as the lower arm (10
) is provided on the parallel link (7) in parallel with the tool (1
5. The working arm according to claim 1, characterized in that the tool link (15) as the receiving part of 6) is guided parallel to the parallel link. (6) Upper arm (additional pivot eye to 11 (26)
is provided, which pivot eye (27) coincides with the pivot eye (27) of the base link (2) in one raised end position and furthermore provides an additional pivot eye (28) on the parallel link (7).
A pivot eye (2) is provided for the piston rod of the lifting cylinder (5) when this pivot eye is in the other lifting end position
9), the lifting cylinder (5) is connected to the base link (2) by the bin in order to obtain a large lifting force.
and its piston rond to the pivot eye (29) of the upper arm (1), and the lifting cylinder (5) is attached to the upper arm (1) in order to obtain a large lowering force.
) and its piston rond is pivotally connected to the pivot eye (28) of the parallel link (7). or the working arm described in one of the above. 7) The rod (18) can be shortened, the rod (18) being formed as a hydraulic cylinder (20) with a piston rod (21) that is pushed out and shortened by retracting the piston rod, when the excavator Link (19
) The work arm according to any one of claims 1 to 4, characterized in that the work arm rotates. Claim 1, characterized in that the tslm (18) is pivotally connected to an adjusting lever (22) which is pivotally connected to the parallel link (7), said adjusting lever being adjustable by means of an adjusting cylinder (23). The work arm according to any one of paragraphs to paragraph 4. <<9>> If the lengths of the upper arm (1) and the lower arm (10) are not equal, the shunt (3 days) of the synchronizer is connected to a constant motor (Konstant motor) (
40) and an adjusting motor (41) and distributing different amounts of oil to the lower arm cylinder (37) and the lifting cylinder (5), which can be changed during forced movement. The working arm described in item 4. aω If the lengths of the upper arm (1) and the lower arm (10) are slightly different, the synchronizer will move both arms (1.1
4. Working arm according to claim 1, characterized in that the working arm is configured to deflect 0) at unequal angles.