JPH03206216A - Back hoe - Google Patents

Abstract

PURPOSE:To facilitate the work by disposing below a lever-attached box a revolving stand opening for switching operation, which box is formed in the lid body of the revolving stand opening. CONSTITUTION:To change operation patterns, an operator performs operation of raising and opening a lever-attached box B1 forming the lid body of a revolving stand opening 29 and also causes the box B1 being opened to be supported by an expansion link type lock mechanism 30. Then the operator stands directly outside of one side of a revolving stand 2 or using a foot stand and puts his hand into the revolving stand from the opening 29 and performs operation of changing a communicating switching portion J1 or J5 while in his standing position. Thereby, the working efficiency is enhanced.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a pair of left and right operating levers that are mounted on both lateral sides of a driver's seat on a swivel platform through lever mounting boxxes, and that are capable of pivoting in a cross direction. By arranging an interlocking mechanism that interlocks and connects the operation lever to the boom valve, arm valve, bucket valve, and swivel valve inside the swivel base, and changing the member to be connected of the interlocking members constituting the interlocking mechanism, the operation can be performed. Changing the target hub that the lever is linked to,
The present invention also relates to a bankhoe in which the interlocking mechanism is provided with an interlock switching section that changes the interlocking of the operation lever with respect to the valve to be operated.

[Prior Art] The above-mentioned Hankou changes the valve operated by the left or right operating lever, or changes the lever operation direction for operating the target valve, by changing the interlocking by switching the interlocking switching section. This is what I have come to do. This means that the so-called operation pattern has changed.

In this type of hackhow, conventionally, the interlocking switching section is disposed below the operation step forming part of the swivel base and the lower part of the seat, and the swivel base part is attached so as to be openable and closable, and the swivel base part is opened. The operator had to insert his/her hand through the opening of the swivel base to operate the interlocking switching section.

[Problems to be Solved by the Invention] Conventionally, when changing the operation pattern, the driver's seat and driver's seat are located inside the swivel base, so it is necessary to change the operation pattern while riding on the swivel base and bending forward. The operator had to press the interlock switching unit to switch, making the work difficult due to his posture.

SUMMARY OF THE INVENTION An object of the present invention is to enable a user to easily change an operation pattern in a comfortable position.

[Means to solve the problem]

In order to achieve the purpose of the backhoe according to the present invention, in the backhoe described at the beginning, the interlocking switching section and the swivel base opening for switching the interlocking switching section are arranged below the lever mounting box. The lever mounting box is shaped and attached to the lid of the swivel base opening so that it can be opened and closed. The functions and effects thereof are as follows.

[For production]

When the lever mounting box is opened, the swivel base opening opens, and the interlocking switching section can be switched from this opening. When performing this switching operation, it is recommended that you stand directly on the ground on the outside of the swivel base or use a footrest that makes it easier to reach the interlocking switching section, and work comfortably in a standing position. Since the lateral side of the seat is located near the lateral end of the swivel base, this is made possible by the arrangement of the interlock switching portion and the swivel base opening.

(Effects of the Invention) The switching operation of the interlocking switching section can now be performed efficiently in a standing posture that makes it easy to work, and the operation pattern can be changed quickly.

〔Example〕

Next, examples will be shown.

As shown in Fig. 6, a swivel base (a swivel base) is attached to a crawler second traveling machine base having a dozer (1) so as to rotate around an axis (Z).
2) is installed, and this swivel base (2) is equipped with a driving part (3) and a driving part (4), and a swing bracket (
5) Panokhou device (
6) is installed to set up a dozer-equipped dozer.

A boom valve (V1) is installed on the front end side inside the swivel base to enable operation of the swivel base (2) and the handshake device (6).
An arm valve (ν2), a hackent valve (V3), and a swivel hub (V4) are installed, and are located on both sides of the driver's seat (5) on the swivel platform as shown in Figures 1 and 2. Place the lever installation box (B1) or (B
2) through which the operating levers (LL) and (RL) are attached so as to swing in the cross directions of the swivel table lateral direction and the swivel table longitudinal direction.
) to the valves (V1) to (V4) is constructed as shown in FIG. 3.

In other words, when the left operating lever (LL) is swung in the longitudinal direction of the swivel table around the axis (X), the lth operating wire (lock 1) is
is pushed or pulled, and the left operating lever (LL) is moved to the axis (Y).
It is arranged so that when the swivel table is swung in the left and right directions around it, the second operation wire (prisoner 2) is pushed or pulled. When the right operating lever (RL) is swung back and forth around the axis (X), the third operating wire (W3) is pushed and pulled, and the right operating lever (RL) is moved around the axis (Y). When the swivel table is swung left and right, the fourth operation wire (w4) is activated.
is configured to be operated by pushing and pulling.

The first interlocking cylinder shaft (7) and the first interlocking shaft (
8) so as to rotate relative to each other around the same axis (p+), and the third operating wire (匈3) is connected to the first interlocking sleeve (7) by the second interlocking switching section (J2). shaft(
8) so as to be switched and linked. Then, the first interlocking sleeve sleeve (7) is connected to the interlocking ronodo (9) or (10).
) The second interlocking cylinder shaft (11) and the third interlocking cylinder shaft (l2) are interlocked via the lth interlocking shaft (8), and the interlocking rond (13
) The second interlocking shaft (14) interlocked via the same axis (
A push-pull interlocking rond (P3) is provided to rotate separately around the second interlocking sleeve sleeve (11) and a third interlocking sleeve sleeve (12) and is switched and interlocked by a third interlocking switching section (J3).
15) to the fourth interlocking cylinder shaft (16) and interlocking rondo (R1).
The second interlocking shaft (14) is interlocked with the sliding spool of the arm hull (V2) through the interlocking rond (
R2), boom harp (V
It is interlocked and connected to the sliding spool of 1). The fifth interlocking sleeve sleeve (18) and the third interlocking shaft (19) cause the second operation wire (Zo2) to be switched and moved by the fourth interlocking switching section (J4).
are provided so as to rotate relative to each other around the same axis (P2), and the fourth operation wire (-4) is connected to the fifth interlocking switching section (
J5), the third interlocking shaft (19) and the sixth interlocking cylinder shaft (2
0). Then, the third interlocking shaft (l9) is interlocked and connected to the sliding spool of the Hakke noto valve (V3) via the interlocking rondo (21), the seventh interlocking tube sleeve (22), and the interlocking ronodo (R3), and the fifth interlocking shaft The sleeve sleeve (18) is connected to the rondo (23) and the cylinder shaft (16).
) and (22), and a fourth interlocking shaft (24) that rotates relative to the same axis (P4), and is interlockingly connected to the sliding spool of the swinging hull (V4) via the interlocking rondo (R4). , the sixth interlocking cylinder shaft (20) is interlocked and connected to the fourth interlocking shaft (24) via an interlocking ring (25).

First, second, fourth and fifth interlocking switching parts (J1),
(Jz), (J4), (Js), connect the connecting fitting (27) attached to the end of the operating wire (W1) or extension 2) (W4) to the interlocking cylinder shaft (7). or (1st) or (20) has a swinging arm (7a) or (
7b) or (18a) or (20a) and the interlocking shaft (
8) or (19) with the swinging arm (8a) or (8b) or (19a) or (19b), the operating wire (singing) or (W4
) is interlockingly connected to the interlocking cylinder shaft (7) or (18) or (20), or interlockingly connected to the interlocking shaft (8) or (19). Then, the third interlocking switching section (J3
), the connecting fitting (27) f attached to the end of the interlocking rond (15), the swinging arm (Iia) of the second interlocking cylindrical shaft (11), and the third interlocking cylindrical shaft (12) By switching and connecting to the swing arm (12a) provided, the interlocking rod (15) is interlocked and connected to the second interlocking barrel sleeve (l1) or to the third interlocking barrel shaft (l2). . In other words, the first to fifth interlocking switching parts (J1) to (J1) are connected to the operating wires (-1) to (h4) and the interlocking sleeve sleeve (1), which is a pair of members to be connected to the interlocking rod (15).
7), (11), (12), (18).
(20) and interlocking axes (8), (14), (19)
By changing the operation lever (LL) and (RL
), or change the operation target valve linked with
(LL) and (RL) are configured to change the interlocking relationship with the operating target hulls, and when one of the connection patterns (A) to (N) shown in Figure 5 is connected, as shown in Figure 4. It is arranged so that one of the operation patterns (1) to (V) as shown in FIG.

That is, if you connect the connection pattern (A), you will get the operation pattern (1), if you connect the connection pattern (T1) you will get the operation pattern (II), and if you connect the connection pattern (C), you will get the operation pattern (II). An operation pattern (DI) is obtained, an operation pattern (rV) is obtained by concatenating the concatenation pattern (2), and an operation pattern (V) is obtained by concatenating the concatenation pattern (e). The direction of the arrow shown in Fig. 4 indicates the direction of swing of the operating lever (LL) or (RL) from the neutral position, the upward arrow in the drawing indicates the front direction of the swivel table, and the downward arrow indicates the direction of the swivel table rear direction. The left arrow indicates the left direction of the swivel base, and the right arrow indicates the right direction of the swivel base.

The interlocking mechanism (E) is arranged inside the swivel base (2). As shown in FIG. 1, the first to fifth interlocking switching parts (J1) to (J1) are placed in the lever mounting box (B1) on the opposite side from the side where the instrument panel (28) is located.
The swivel base opening (29) is located below the lever mounting box (B1) of the swivel base (2).
), and the lever mounting box (B1) is shaped so that its area in plan view is larger than the swivel table opening (29) so that it can swing up and down around the axis (P1) on the rear side of the swivel table. It is attached to the bonx attachment part (2a) of the swivel base (2) to serve as a cover for the swivel base opening (2).

In other words, when changing the operation pattern, the lever mounting box (B1) is raised and opened, and the bending link 2 locking mechanism (30) is used to support the lever in the open state, so that the lateral outside of the swivel base (2) is placed on the ground. It is possible to switch between the interlocking switching parts (J1) and (J1) by standing directly on it or using a footrest and inserting your hand through the swivel opening (29). Under normal conditions, the reher mounting box (B1) is lowered and closed, and the fixing means 4 (not shown) such as a candle screw is used to close and lock the operation lever (LL).
The swivel table opening (29) is closed.

Incidentally, the valve (V1) shown in FIG. 3 is for boom speed increasing operation.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the backhoe according to the present invention, in which Fig. 1 is a plan view of the driving part, Fig. 2 is a side view of the driving part, Fig. 3 is a perspective view of the interlocking mechanism, and Fig. 4 is a diagram of the operation pattern. FIG. 5 is an explanatory diagram of the connection pattern, and FIG. 6 is a side view of the entire backhoe with dozer. (2)... Swivel base, (7) , (8) ,
(11) , (12) , (18) , (19)
(20)...Parts to be connected, (29)...
・・Swivel base opening, (15), (W1) or (prisoner.)・
...Interlocking member, (E) ...Interlocking mechanism, (
B1) (B2)...Lever mounting Bonox, (L
L), (RL)......Operation lever (J) to (J5)......Interlocked switching section.

Claims (1)

[Claims] A cross-swingable operation lever (LL or RL) is installed on both sides of the driver's seat (S) on the swivel platform via a lever installation box (B_1 or B_2), and the pair of left and right operation levers (LL ), (RL) to boom valve (
V_1), arm valve (V_2), bucket valve (
An interlocking mechanism (E) interlockingly connected to V_3) and the swivel valve (V_4) is disposed inside the swivel base (2), and interlocking members (15), (W_1 to W_4) forming the interlocking mechanism (E). Members to be connected (7), (8), (11)
, (12), (18), (19), and (20), it is possible to change the valves to be operated in conjunction with the operation levers (LL) and (RL), and to change the operation target valves that are linked to the operation levers (LL) and (RL).
A backhoe in which the interlocking mechanism (E) is equipped with an interlocking switching section (J_1 to J_5) for changing the interlocking operation of the valves to be operated (L) and (RL), the interlocking switching section (J_1 to J_5), and , a swivel base opening (29) for switching operation of the interlocking switching parts (J_1 to J_5) is arranged below the lever mounting box (B_1), and the lever mounting box (B_1) is connected to the swivel base opening (29). ) is formed on the lid of a backhoe and is attached to the lid so that it can be opened and closed.