CN1711398A

CN1711398A - Loader-digger

Info

Publication number: CN1711398A
Application number: CN200380103181.0A
Authority: CN
Inventors: R·巴特斯
Original assignee: JC Bamford Excavators Ltd
Current assignee: JC Bamford Excavators Ltd
Priority date: 2002-11-14
Filing date: 2003-11-13
Publication date: 2005-12-21
Anticipated expiration: 2023-11-13
Also published as: EP1560987B1; AU2003301995A1; EP1560987A1; BR0316344A; WO2004044336A1; GB0226528D0; US20060150447A1; GB2395187A; GB2395187B; CN100537908C; JP4509796B2; JP2006506562A

Abstract

The backhoe loader (10) has a body (11) with a front end and a rear end, the body (11) being supported on a steerable wheeled ground engaging structure, the machine (10) including a loader arm assembly (20) and a backhoe arm (30) mounted on the body (11) and extending forwardly of the body (11), wherein the excavating arm (30) is mounted on a superstructure (25) comprising an operator's cab (26), the superstructure (25) being rotatable relative to the main body (11) about a generally vertical axis (B) during performance of excavating operations, the excavating arm (30) being mounted on the superstructure (25) by a mounting (32) which allows the arm (30) to swivel relative to the superstructure (25) about a generally vertical swivel axis (C), and allows the digging arm (30) to be raised and lowered about a generally horizontal axis (D).

Description

Loader-digger

Summary of the invention

The present invention relates to the loader-digger of wheel.

Known loader-digger has in body front end and has loading arm and have the main body of digging arm in body rear, and the ground engagement structure of wheel is arranged, such as the axle of a pair of support ground engagement wheel.

This machine by can turn to one or two on wheel, or can turn to by hinged main body.

In each case, the loader-digger of combination provides multiduty machine for the owner, and it can carry out various excavations and loading operation.Yet, excavate and load in the machine of two kinds of operations providing to carry out, carried out design tradeoff, the result, when machine when carrying out concrete dredge operation, machine tends to have the ability not as special-purpose excavator, and for example digging arm is in the structural kind that is supported on the superstructure of vertical usually axis rotation that centers on of ground engagement.

Make up the main body of loader-digger and have the structure of the ground engagement structure of wheel can prevent that the ditch of closely adjacent obstacle such as wall from easily being excavated, especially this situation.On the machine of some combinations, the digging arm of installing at the center can side direction move on vehicle frame usually, make arm can be used for excavating the ditch near obstacle, but transfer arm causes the observability difficulty to the operator by this way.

According to a first aspect of the invention, we provide the loader-digger with the main body that has front-end and back-end, main body is supported on the ground engagement structure that wheel is arranged that can turn to, machine comprises the loading arm assembly that is installed on the main body and extends before main body, and digging arm, and wherein digging arm is installed on the superstructure, this superstructure comprises operator's driver's cabin, during carrying out dredge operation, superstructure can be rotated around common vertical axis with respect to main body, and digging arm is installed on the superstructure by installed part, this installed part allows arm to turn round around common vertical axis of rotation with respect to superstructure, and allows digging arm to raise and reduction around the axis of common level.

Digging arm can be this kind, promptly comprise at least two parts, its axis around common level can relatively move, and have the excavating tools such as Excavating bucket on the outer end that is installed in digging arm, can be installed on the digging arm to carry out special operation although comprise other instrument of non-excavating instrument.

Therefore the machine according to the present invention ability that expanded known loader-digger because digging arm can move with driver's cabin, makes and can carry out dredge operation in multiple position, and needn't move digging arm to the invisible position of operator along vehicle frame.Therefore in the combination loader-digger, realized the advantage of above-mentioned special excavator kind.

Preferably, superstructure can lock at the position of rotation that needs with respect to main body between the operating period at digging arm.

In preferred configuration, superstructure is installed in back body or towards back body, and for example on the rear axle of the ground engagement structure that wheel is arranged, in this case, rotatable superstructure can be trailing wheel and supports dashboard.Although these dashboards will rotate together with superstructure, when driving machine on the ground, superstructure will be oriented in straight forward facing position, make digging arm be installed in main center usually between the side.

Therefore can comprise in the driver's cabin that the operator uses during in forward position of straight line is used for driving machine on the ground and handles first controlling organization of carrier arm assembly when driver's cabin, and be used for handling digging arm and be used for second controlling organization of revolving superstructure.Driver's cabin can comprise rotatable operator's seat, so that the driver can suitably arrive and use first or second controlling organization.

The loading arm assembly can be a single arm kind, and single armed is installed in the position at the common center between the main body side, the front of superstructure.

In preferred configuration, the loading arm assembly comprises a pair of loading arm, and each extends along the side of main body.

Under any circumstance, to understand that rotatable superstructure is not collided under main body and/or the loading arm assembly situation at digging arm can not complete 360 ° of rotations, but preferably, mechanically provide the rotation of stop member, reach 300 ° although superstructure can be rotated with the restriction superstructure.

The main body of machine can be held the motor that power is provided to machine, and motor is preferably equipped before rotatable superstructure, usually the center between the main body side.Have at the loading arm assembly under the situation of single armed, motor can be positioned at below the inner of loading arm, or comprises at the loading arm assembly under the situation of a pair of arm, can equip motor in condition following time of reducing between arm at least.Alternatively, motor can be installed to a side of machine.

The relative main body of loading arm assembly can pivoted around the installation axis of common level, and can comprise a plurality of flexible parts, no matter single armed or both arms, and the loading appliance such as bucket can be installed in the outermost end of loading arm assembly.

Superstructure can be rotated with respect to main body by hydraulic pressure or electro-motor as required.

With reference now to accompanying drawing, embodiments of the invention are described, wherein:

Fig. 1 is the illustrative phantom drawing of embodiments of the invention, and superstructure is at a position of rotation;

Fig. 2 is the illustrative rear elevation of the machine of Fig. 1, and superstructure is at an optional position of rotation, but for the clear arm of stability that omitted.

Fig. 3 is the view similar in appearance to Fig. 1, but shows an optional embodiment of the present invention.

Fig. 1 with reference to the accompanying drawings and Fig. 2, show loader-digger 10, the main body 11 that it comprises on the ground engagement structure 12 that is supported on wheel has the ground engagement structure 12 of wheel to comprise front axle 13 and rear axle 14, and the wheel 15 that is supported by front axle 13 can turn to by hydraulic pressure and/or mechanical device.

The trailing wheel 16 that is supported by rear axle 14 can not turn in this example, but in another embodiment, can turn to, and/or main body 11 can be hinged.

Loading arm assembly 20 is installed on the main body 11 at installed part 18 places, and loading arm assembly 20 comprises single armed, and it extends beyond the front end of machine 10 to installed part 18 fronts.Installed part 18 allows loading arm 20 to raise or reduction by the axis A that hydraulic pressure or other driver 21 center on common level.

The center that is used for the installed part 18 common main bodys 11 between main body 11 sides of loading arm assembly 20, and loading arm assembly 20 extension downwards on hood 22 hold motor (not showing) below hood.Therefore motor is installed towards the usually middle heart in the front of main body 11 in this example.

Loading arm assembly 20 in this example comprises two telescopic section 20a and 20b, and loading hopper 23 or other loading appliance be in the outermost end of loading arm assembly 20, but if desired, loading arm assembly 20 can have this telescopic section more than two.

Superstructure 25 is installed on the main body 11, and superstructure comprises operator's driver's cabin 26.Operator's driver's cabin 26 comprises rotatable operator's seat 27 in its inside, it can rotate so that the operator can arrive and handle first controlling organization, driving machine 10 on the ground and to handle loading arm assembly 20, or make the operator can in driver's cabin 26, arrive second controlling organization.

Superstructure 25 is installed towards the rear end of main body 11, and to center on vertical usually axis B rotation by hydraulic pressure or electro-motor by the control of second controlling organization in the driver's cabin 26, it is arranged on the center of main body 11 usually between the side.And superstructure 25 has digging arm mounted thereto 30, and it is handled also by the control of second controlling organization in the driver's cabin 26.

Digging arm 30 is installed in the center of the side of driver's cabin 26 usually by installed part 32, in order to move around the common vertical axis C that for example on principal post or similar pillar, also has, and around the axis D of common level motion, this move through by the hydraulic unit driver separately of second controlling organizations control in the driver's cabin 26 or similarly driver realize.The installed part of principal post type allows digging arm 30 revolutions to reach 180 ° usually.

Digging arm 30 has two part 30a in this example, 30b, it is again the horizontal axis pivot relative that centers on the E indication by the driver of the control of second controlling organization in the driver's cabin 26, and excavating tools 35, it is the bucket in this example, be installed in the outermost end of

arm

30,35 can substitute although struggle against, such as the fullering tool that is used for particular job operation by other instrument.Bucket 35 is again by the control of second controlling organization in the driver's cabin 26.

Because be used for the position of the installed part 18 of loading arm 20 and other main body 11 parts, superstructure 25 can not be rotated on main body 11 or be turned round complete 360 °, but preferably, when the action of mechanical stop joint on being equipped in turning circle may cause damage to main body 11 to prevent that superstructure 25 rotations are feasible, superstructure can be rotated or turn round and be reached 300 °.Substitute or except action of mechanical stop, can provide the hydraulic interlocking device, the rotation that exceeds its design limit with constraint superstructure 25 for example can provide liquid braking device for the hydraulic motor that is used for turning round superstructure 25.

When needs used machine 10 with the execution loading operation, superstructure 25 rotations made the installed part 32 of digging arm 30 be centrally located at usually on the rear portion of machine 10 between main body 11 sides.Superstructure 25 preferably mechanically is locked in this position, and operator's seat 27 is directed so that towards preceding.Therefore the operator handles first controlling organization, can carry out loading operation.Be in this position by superstructure 25, be supported on dashboard 42 on the superstructure 25 on trailing wheel 16, make that these dashboards can be carried out the function of the splash that reduces mud when machine 10 is mobile on the ground.

When needs were carried out dredge operation, the superstructure locks of machinery was unclamped, and operator's seat 27 rotates in driver's cabin 26, so that the operator can arrive and use second controlling organization.Therefore the operator can revolving superstructure 25 and is handled digging arm 30 and carry out dredge operation simultaneously.

As shown in Figure 1, dredge operation for example can be by making up revolving superstructure 25 and carrying out around vertical axis of rotation C revolution digging arm 30 in obstacle next door ditching.

Ideally, superstructure 25 rotates to the position of rotation with respect to the needs of main body 11, for example be provided with respect to main body 11 subsequently by the mechanical/hydraulic locking device, therefore during dredge operation, digging arm 30 can move with respect to superstructure 25 around axis C and D, and superstructure 25 is locked in preferred position of rotation.

The machine 10 more parts that obtain from accompanying drawing are conspicuous for those skilled in the art in this area.For example, a pair of stabilizing

leg

50,51 can be equipped in the rear portion (only illustrating at Fig. 1) of main body 11, during dredge operation, to stablize machine 10,

leg

50,51 mechanically or by the suitable power set such as hydraulic unit driver are reduced to and ground engagement, and can raise and do not contact with ground.

Can see that for more stable, this routine middle and upper part structure 25 is positioned at above the trailing wheel 16 of machine 10, and when superstructure was fully rotated, the installed part 32 that is used for the digging arm 30 on the superstructure can be on trailing wheel 16.

Among Fig. 3, the machine that machine 10 is similar and illustrated in figures 1 and 2, but in this example, replace having single armed, loading arm assembly 20 has a pair of arm 20c.When assembly 10 reduced, arm 20c extended at the either side of main body 11, made motor below hood 22 and the hood between arm.Similar to the machine 10 of Fig. 1 in addition parts are pointed out with same mark.

If desired, for the kind of the machine 10 shown in Fig. 1 or 3, the substitute machine motor is provided in the center of hood 22 lower body 10 usually, can be equipped with the motor that install the side.

The description of front, or following claims, or the feature that discloses in the accompanying drawing, with its special form or according in order to carry out the device of the function that discloses, or method or process in order to reach the result who discloses, suitably, separable or with any combination of these features, be used for realizing different form of the present invention.

Claims

1. loader-digger with the main body that has front-end and back-end, body supports is on the ground engagement structure that wheel is arranged that can turn to, machine comprises loading arm assembly and the digging arm that is installed on the main body and extends previously to main body, wherein, digging arm is installed on the superstructure, superstructure comprises operator's driver's cabin, superstructure can be rotated with respect to main body around common vertical axis during carrying out dredge operation, digging arm is installed on the superstructure by installed part, installed part allow upper-arm circumference around vertical usually axis of rotation with respect to revolving upper structure, and allow digging arm to raise and reduce around the axis of common level.

2. machine according to claim 1, wherein digging arm be comprise at least two around the axis of common level can relative motion the type of part, have excavating tools to be installed in the outer end of digging arm.

3. according to claim 1 or the described machine of claim 2, wherein superstructure can be locked in the position of rotation that needs with respect to main body between the operating period at digging arm.

4. according to any one the described machine in the claim 1 to 3, wherein superstructure is installed in the rear portion of main body or installs towards the rear portion of main body.

5. machine according to claim 4, wherein superstructure is installed on the rear axle of ground engagement structure of wheel and rotatable superstructure has the dashboard that is used for trailing wheel.

6. according to any one the described machine in the claim of front, wherein driver's cabin comprises first controlling organization that is used for driven machine on the ground and handles the loading arm assembly in its inside, and second controlling organization that is used to handle digging arm and rotates upper mechanism, and rotatable operator's seat, make the driver can arrive and use first or second controlling organization.

7. according to any one the described machine in the claim of front, wherein the loading arm assembly is installed in the position at common center between the main body side, in the front of superstructure.

8. according to any one the described machine in the claim 1 to 6, wherein the loading arm assembly comprises a pair of each loading arm that extends along the main body side.

9. according to any one the described machine in the claim of front, wherein rotatable superstructure can have the rotation that stop member mechanically limits superstructure less than complete 360 ° of rotations.

10. machine according to claim 9, wherein superstructure is rotatable reaches 300 °.

11. according to any one the described machine in the claim of front, wherein the main body of machine is held the motor that power is provided for machine, motor is equipped in the front of rotatable superstructure, usually the center between the main body side.

12. according to the described machine of the claim 11 that is subordinated to claim 7, wherein motor be installed in loading arm the inner below.

13. according to the described machine of the claim 11 that is subordinated to claim 8, wherein motor is equipped between the arm.

14. according to any one the described machine in the claim of front, wherein the loading arm assembly is pivot around the installed part axis of common level with respect to main body.

15. according to any one the described machine in the claim of front, wherein the loading arm assembly comprises a plurality of telescopic sections, loading appliance is installed in the outermost end of loading arm.

16. according to any one the described machine in the claim of front, wherein superstructure can be by hydraulic pressure or the relative main body rotation of electro-motor.

17. that roughly be described with reference to the drawings as mentioned and/or in the accompanying drawings shown in loader-digger.

18. the combination of described herein and/or any as shown in drawings novel characteristics or novel characteristics.