JPH06257182A - Work machine movable by advancing mechanism or wheel driving mechanism - Google Patents

Abstract

PURPOSE: To provide a working machine, especially an excavator, to be movable by an advancing mechanism or a wheel drive mechanism assembled from the functional assembly of a unit system. CONSTITUTION: Since a base frame 30 is provided with a coupling device 38 to be assembled by screwing a pair of upper and lower couplings 74 previously mounted on a wheel leg 70 or a support leg 98 being exchangeable and laterally swinging, the base frame is supported by the wheel leg pair or the support leg pair or four wheel legs. In this case, at least two wheels 80 are driven by a wheel hub motor 82 and convert a direction, and remaining wheels are provided with a means for guiding to swing. Further, assemblies locked at each other by a screw consist of an upper structure coupled to a regulation pedestal housing 50 through a pivot bearing, and a boom assembly fixed at a swing console 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has two wheel legs which are swingable vertically and horizontally via a control cylinder attached to one end of a base frame. The engine, hydraulic control unit, operator cabin, and boom assembly. The present invention relates to a work machine, particularly a power shovel, which can be moved by a forward drive mechanism or a wheel drive mechanism in which a base frame supports an upper structure provided with.

[0002]

BACKGROUND OF THE INVENTION In addition to the above basic components, a known forward excavator (walking drag line) equipped with two supporting legs has been designed to protect roads, such as landscapes and nature, which cannot be reached by vehicles. It is used in places where it is not allowed to pull or set up access roads. In such a case, the forward power shovel and building materials necessary for the preparation and adjustment of the construction site will have to be air-shipped, but in this case, even with a large helicopter, the possible loading capacity is large enough to mount the entire power shovel. Since there is no such thing, the power shovel is disassembled into its components, divided into several parts, and transported by air, assembled at the site, and disassembled again after the work is completed and carried out by air. Advance excavators are not actually used until after a rough earthmoving at the construction site, so all further work is simple and quick with a mobile excavator or crane that is easy to operate. Can be done.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a working device that can be assembled at a remote site with little effort due to a unit system consisting of a light and transportable assembly, and if necessary, The purpose is to obtain an assembly that can be adjusted, expanded, refurbished, and disassembled into various power shovels and cranes, for example, by converting a forward power shovel into a traveling power shovel.

[0004]

This problem is solved by the present invention.
It is solved by the features of claim 1. The arrangement according to the invention allows components important for forward or running operation and stability to be assembled and functionally connected outside the assembly plant with very little effort. A screw-fastening coupling device is advantageous for these assembling and coupling. This is because it is not necessary to disassemble the drag bearing of the joint, and there is no need to remove the swivel pin or new fitting, which would not be possible without auxiliary equipment, and a quick connector that can be screwed in by hand. This is because it only has to be operated. In this case, the mating surfaces pressed against each other by the threaded connection transmit all the main loads during use of the work implement, and the screw is not subjected to a lateral acting force which is guided via the wheel arm or the support arm.

The screwable speed assembly of the present invention is important not only for protruding wheel legs and support legs that take up space, but also for other components in remote locations with the work machine disassembled. This is a great advantage when shipping by air.

After the superstructure is assembled to the base frame provided with the wheel legs or the supporting legs, the swing console attached to the boom assembly is screwed to the superstructure. Again, the swing console can also be secured to the superstructure using a screwable coupling device to avoid having to fit bearing bolts into their receiving holes and to simplify assembly. After this final assembly, the superstructure and adjusting pedestal housing on the one hand and the boom assembly and support legs on the other
/ Connect the self-sealing quick coupling hydraulic connectors that follow the control cylinders of the wheel legs to each other.

Other features and advantages of the working machine of the present invention are as set forth in the claims and the description of the embodiments with reference to the drawings. However, the features shown in the claims are complemented by the features shown in the description of the embodiments, and it goes without saying that the features of the present invention other than those described here can be configured independently or in any combination. Is.

The working machine of the present invention, which is shown in the assembled state in FIGS. 1 and 2 and in the disassembled state into the basic components in FIG. 3, is a superstructure 10 unit with a rope hook 11 and a mower provided in this unit. 12, hydraulic control device 1
3, cabin 15, and front bearing nose 1
It is made up of 7. A swing console 16 is supported on the bearing nose 17 so as to swing about a vertical kink shaft 18. The swing console consists of boom 20, shovel arm 21, and shovel 2.
2 and a boom assembly consisting of an attached swing cylinder, or else such as a tool or working arm for crane work. In the case of a simple structure, the boom 20 can be directly attached to the superstructure without the swing console.

Between the bearing noses 17 supporting each other are self-closing hydraulic connectors 24, which are responsible for the connection to the boom assembly hydraulic connections 29 integrated in the swing console 16. ing. The swing console 16 is provided with a bearing nose 26 which forms a bearing shell as shown in FIGS. 4 (a) and 4 (b), and these are provided after the bearing bolts 25 supported by the bushes 27 are mounted. , Can be swung by the complementary bearing cap 28. 4 (c) and 4 (d) show another screwable connecting device, in which the separating surface with mating surfaces on both sides always has the kink shaft 1
2 towards the console 16 instead of going through 8
It passes between two flange faces.

As shown in FIGS. 6A to 6C, the base frame 30 of the work machine is composed of a rectangular hollow profile 34 which constitutes a frame body, and each section is obliquely cut and welded. Thereby, a connected space is obtained, and this space can be used as a fuel tank by providing the oil filling port 35. On the two sides of the base frame are fixed upper bearing noses 32 for supporting the height adjusting cylinders 31 of the wheel legs and the supporting legs. Inside the base frame,
An internal flange 33 having a screw hole is fixed, and the auxiliary tank 47 with a screw connector 48 shown in FIG. 6B can be connected to this flange.

A bearing flange 36, shown as a bearing shell on the right side of FIGS. 6 (a) and 6 (b), for mounting the wheel legs or support legs to the base frame.
Are welded to receive one or more horizontal bearing bolts. These bearing bolts have vertical and horizontal bearing bolts and are part of a joint 74 integrated with the wheel legs or support legs. After inserting the horizontal bearing bolt of the fitting not shown,
The bearing flange 36 is closed by the bearing cap 37 and screwed in the same manner as in FIG. 4 (b), at which time the mating surfaces are pressed together. The bearing flanges 36 welded to the base frame 30 can be prepared in advance for all four wheel legs or support legs.

As another example of the coupling device, sleeve-like upper and lower screw knocks 38, 3 shown on the left side of the base frame 30 in FIGS. 6A and 6B.
9 in which each joint 74 has four screw knocks arranged as shown in FIG. 6 (c). The bearing eye 71, which is a part of each joint 74 in FIG. 3, is fixed to one common support plate 40 in FIG. 7. Support plate 4
0 has screw holes that match four screw knocks 38 and 39 (FIG. 6c), and is fixed to the base frame 30 by screws 41. At least two screw knocks 39 on the diagonal line are tapered on the front side, and the support plate facing this is provided with a tapered socket surrounding the screw hole. This coupling device automatically and correctly positions the swing bearing of each wheel leg or support leg during screwable speed assembly. In this case, the generated lateral force is
It is transmitted between the base frame and the supporting legs via the mating surface without applying a load to the screw 41. The same coupling system can be applied to the swing consoles of FIGS. 4 (c) and 4 (d).

In order to connect the upper structure 10 with the inner flange 33 of the base frame 30 shown in FIG.
A lower flange 54 of the adjusting pedestal housing 50 is used, which is fixed to the superstructure 10 by a pivot flange 42 as shown in (a). Pivot flange 42
Is composed of an outer ring 43 screwed to the base plate 14, an inner ring 44 screwed together with the upper flange 53, and an intermediate roller bearing body. Hydraulic motor 4 fixed to superstructure
6 is meshed with the inner ring 44, the inner teeth of which are cut, via the pinion 49. An oil pan 52 fixed to the upper flange 43 under the rotation path of the pinion is sealed by a side wall 52.

The adjustment pedestal housing 50 is provided with a maintenance opening with a removable lid 55, and a hydraulic rotary transmission central stator 56 fixed to a support 60. Within the stator 56 there is a rotor 57 fixed to the superstructure, which couples the hydraulic lines led from the control unit 13 with the openings shown in the stator 56. The hydraulic pipe 58 connects the external hydraulic connector 59 and the external hydraulic connector 59. The hydraulic connector 59 is responsible for the connection to the wheel leg or support leg control cylinders 31, 75, the hydrostatic wheel motor, and the wheel stop cylinder 93.

The upper flange 53 of the adjusting pedestal housing 50 has an octagonal outer circumference 62 in the example of FIG. 5 (a), on which a ring-shaped upper coupling surface is machined, and FIG. ) Is welded to the flat wall section 64. This wall section is formed from a downwardly expanded housing and a transition to a rectangular lower flange 54, which allows the assembly of superstructure and adjusting pedestal housing to form a flange 33 on the base frame 30. It is screwed up.

The joint 74 screwed to the front and rear sides of the base frame, in FIGS. 3 and 10, together with the wheel leg 70 or support leg 98 and the control cylinder 75, form one preassembled assembly. The joints 74 of the pair of wheel legs or the pair of support legs are mirror-symmetrical to each other with respect to the central axis of the traveling mechanism. The wheel legs or support legs and associated cylinders 75 are swingable between horizontal upper and lower plates 76, 77 about vertical bearing bolts 86, 88.
The vertical connecting web between the upper plate 76 and the lower plate 77 constitutes the bearing eye of the horizontal bearing bolt 89, which is mounted on the base frame 30 and has the bearing flanges 36, 3.
7 (FIG. 6), or in FIG. 2 it rests in a non-separable bearing flange 71 and is fixed to the base frame by a support plate 40.

The joint 74 is provided with two upper connecting eyes 79 for connection with the tilt cylinder 31 linked to the base frame. The joint 74 may have another structure. In order to guide the non-turnable wheels 80 in parallel, in FIG. 10 a parallel guide rod 72 is provided between the bearing bolt 88 of each joint 74 and the wheel carrier 73.

Unlike the construction shown in FIGS. 1 and 2, the working apparatus shown in FIG. 10 is assembled as a cruising power shovel having a wheel leg and a supporting leg shown in FIG. 3 below. A support plate 99 is attached to the support leg 98, and a wheel 80 attached to a wheel hub bearing 84 of a wheel carrier 73 is attached to a wheel leg 80 at the other end of the base frame. The propulsion of the work machine is performed by the extension and bending movement of the boom assembly pressed against the ground, as in the conventional power shovel.

Wheels 8 of the traveling power shovel shown in FIGS.
At least one pair of 0s is driven by a hydraulic wheel hub motor 82 arranged on the wheel carrier 73. Two variations are shown in FIG. 9, and the wheel hub bearing 8 for a grape excavator is on the right side of the wheel center line.
4 and the left side is a wheel hub motor 82 for a traveling power shovel.

In the wheel 80 of the wheel leg 70 of FIGS. 8 and 9, a wheel stop 90 radially projecting from the periphery of the wheel.
Is supported by a support portion 91 fixed to the wheel carrier 73,
The wheel stop cylinder 93 allows swinging between the home position in the lifted state and the ground grip position as shown in the figure. The wheel stop cylinder is linked to a wheel stop bearing eye 90 and a wheel stop cylinder bearing 92 fixed on a wheel carrier 73 so that the wheel stop can reach a ground grip position by means of a controllable swing movement. Figure 9
As shown in FIG.
5 extends at least to the outer end of the wheel tread and is provided with one or more spikes (94).

[Brief description of drawings]

FIG. 1 is a side view of a traveling power shovel in which a wheel according to the present invention is combined with a swingable wheel stopper.

FIG. 2 is a plan view of the lower structure of the power shovel of FIG. 1 in a running posture without wheel stoppers.

FIG. 3 is a side view of a work machine having replaceable wheel legs and support legs according to the present invention disassembled into basic components.

4 (a) is a partially cut side view of a swing console having a split bearing, and FIG. 4 (b) is FIG.
The top view of the swing console of (a), FIG.4 (c) is sectional drawing of the swing console which screwed the flange,
4D is a plan view of FIG.

5A is a vertical sectional view of a base plate of an upper structure and an adjustment pedestal housing, and FIG. 5B is a plan view of the adjustment pedestal housing of FIG. 5A.

6 (a) is a plan view of the base frame, FIG. 6 (b) is an upper sectional view taken along line AB of FIG. 6 (a), and a lower is a sectional view of an auxiliary tank. FIG. 6C is a side view of the base frame of FIG. 6A as viewed from the left.

FIG. 7 is a cross-sectional view of a coupling device between a base frame and a support plate of a joint coupled to a wheel leg or a support leg.

FIG. 8 is a side view of a wheel leg with a wheel stopper.

9 is a plan view of the assembly of FIG.

FIG. 10 is a plan view of the work machine of the present invention in which the wheel leg and the support leg are widened.

[Explanation of symbols]

10 Upper Structure 16 Swing Console 18 Kink Shaft 20 Boom 21 Shobel Arm 24 Automatic Opening / Closing Hydraulic Connector 30 Base Frame 35 Oil Filling Port 44 Inner Ring 50 Adjustment Pedestal Housing 53 Upper Flange 54 Lower Flange 59 Hydraulic Connector 62 Outer Perimeter 64 Side Wall 70 Wheel Leg 74 Joint 80 Wheel 90 Wheel Stop 93 Hydraulic Cylinder 94 Spike 95 Extension

Claims (10)

[Claims] 1. An upper structure including an engine, a hydraulic control unit, an operator cabin, and a boom assembly is coupled to a base frame via pivot bearings, and each of both ends of the base frame is vertically, horizontally and vertically via a control cylinder. Two swingable supporting legs are attached to each other by means of a joint, and the two supporting legs are supported by traveling wheels to form a wheel leg, which is movable by a forward drive mechanism or a wheel drive mechanism. A machine, in particular a power shovel (drag line),-a coupling device (36-4) capable of screwing two joints (74) on each end of the base frame (30).
0) is installed and the joint is fitted with a pair of wheel legs and a pair of support legs obtained in a unit system, which in the case of a forward mechanism are two wheel legs (70) and two support legs ( 98), four wheel legs (70) in the case of a wheel drive mechanism
Are selectively completed in the base frame (30), and the coupling device (36-40) includes the base frame (3
0) and the fitting (74), and screw connection (3
7; 41), facing each other through the mating surfaces for transmitting lateral forces, in the case of a wheel drive mechanism, at least one pair of wheel legs (7
The wheel (80) of (0) is driven and capable of changing direction, and the parallel guide means (72) is applied to the wheel which cannot change direction.
And-all wheel legs (70) are provided with either or both of a runaway protection means actuated by the wheel brakes or a runaway protection means (90, 94) actuated independently of the wheel brakes. A working machine characterized by 2. A base frame (3) for each coupling device.
0) parallel bearing flanges (3
6) is in place and the bearing flange is a bearing half for receiving a drag bearing bolt connected to the fitting (74) and can be closed by a screwable bearing cap (37). The working machine according to claim 1, wherein: 3. A base frame (3) for each coupling device.
0) with a plurality of screw knocks (38, 39) adapted to guide and support the coupling screw (41), the screw knocks being fixed to the joint (74). It is aligned with the screw hole of (40),
Work according to claim 1, characterized in that at least two screw knocks (39) are provided with taper on the front side and the support plate (40) screw holes facing them are provided with taper receivers. machine. 4. A wheel stop (90) generally radially protruding from the periphery of the wheel on each of the wheel carriers (73) as a runaway prevention means which operates independently of the wheel brakes.
The wheel stopper is supported so as to be swingable about a horizontal axis, and the wheel stopper swings downward using a hydraulic cylinder (93) linked to a wheel carrier (73) and in a lifted home position. Work machine according to any of the preceding claims, characterized in that it is adjustable with respect to at least one ground grip position. 5. The wheel stop (90) is extended at least to the outer end of the wheel tread, and spikes (94) are provided at both ends of the extension (95). Work machine. 6. The base frame (30) consists of a welded hollow section (34) forming the outer frame body and has an internal flange (33), and-via a pivot bearing (42) an upper part. Structure (1
Adjustable pedestal housing (50) combined with 0)
Has a hydraulic connector (59) which can be screwed to the base frame and which is connected to the control unit via an internal rotary transmission (56), and is mounted on the boom assembly. The swing console (16) is fixed to the superstructure (10) by a screwable coupling device (26, 28) at a separation point on its vertical kink axis (18), the coupling device comprising: Fixed to the superstructure and the swing console and having mating surfaces facing each other via screw connections, and-on the one hand to the superstructure and adjusting pedestal housing (50) and on the other hand the boom. All of the hydraulic connectors (24, 59) following the assembly and the control cylinders of the supporting legs / wheel legs are Working machine according to any of the above claims, characterized in that;-closing quick coupling is provided. 7. The base frame (30) has a filler port (3).
5) A fuel tank with an auxiliary fuel tank (47) adapted to the open frame part, provided with a screw connector for fixing to an internal flange. Work machine. 8. The outer ring (43) of the pivot bearing (45) is fixed to the superstructure, while the inner ring (44) with internal teeth is the adjusting pedestal housing (5).
0) fixed to the upper flange (53) of the pinion (49) driven by said superstructure meshes with the inner ring (44) and also the pinion (4).
Lubricating oil pan (51) arranged under the rotation path of 9)
A working machine according to claim 6, characterized in that the cover of the pivot bearing (45) forms a closed oil pan (52). 9. The rotary transmission has a stator (56) supported in the center of a regulating pedestal housing (50) and an internal rotor (57) fixed to the superstructure and connected to a hydraulic control device. The working machine according to claim 6, wherein the working machine is characterized in that 10. Adjusting pedestal housing (50).
Is the polygonal outer periphery (62) of its upper flange (53)
7. From said 6 to 6, characterized in that it is extended by a sloping flat sidewall (64) to a rectangular pedestal flange (54) to fit the internal flange (33) of the base frame (30). Working machine according to any of 9.