JPH0253675A - Control pattern switching device for control lever in construction vehicle or the like - Google Patents

Abstract

PURPOSE:To permit a control lever to accurately perform its control pattern switching action by rotatably mounting two or more operating members slidably in axial and rotary directions to a supporting shaft, slidably supported in the axial direction to a frame, and manipulating the supporting shaft to be slided in the axial direction. CONSTITUTION:A supporting shaft (c), forming a one-half side c1 into a double shaft, is rotatably supported slidably in an axial direction to a frame (f) provided in a car body (a). This supporting shaft (c) rotatably fits the first and third operating members d1, e1 provided with work points 1, 4 correlating to a control lever (b) and the second and fourth operating members d2, e2 correlating to a control part in a different work part. While the supporting shaft (c) provides in its one-half side c1 a correlating member (g) correlating to the fourth operating member e2 through a correlating mechanism (h). The supporting shaft (c), in accordance with its sliding operation, enables the operating member d1 to be connected to the operating member d2 or the correlating mechanism (g) by a key k1 and the operating member e1 to be connected to the operating member e2 or d2 by a key k2, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a switching bag a for switching the control pattern of a control lever that controls the operation of a working machine in a civil engineering vehicle such as a backhoe.

In a civil engineering vehicle such as a hetsukuhou, the operation of each working part of the vehicle is normally controlled so that the vehicle body a can freely rotate in the left and right directions and in the front and back directions, as shown in Figure 1. The provided control lever b is connected to a hydraulic switching valve device V that can be mounted on the vehicle body a via an operating mechanism part W, and the control lever b is operated by rotating the control lever b from side to side or back and forth.

As shown in FIG. 2, the actuating mechanism W includes an actuating member d having an actuating point 1 and an actuating point 2, an actuating member d having an actuating point 4 and an actuating point 3, on a support shaft C provided on the vehicle body a. The actuating members e having the following are arranged in parallel in two series and rotatably supported, and the actuating point 2 of the actuating member d and the actuating point 3 of the actuating member e are
and the parallel valve mechanism V1*Vz of the hydraulic switching valve system 21v.
are connected to the operating point l of the operating member d and the operating point e of the operating member e.
One operating point moves by tilting and rotating the operating point e in the left and right direction with respect to the control lever b.

It is constructed by linking so that the other operating point moves when tilted and rotated in the front and back direction.

As a result, the two valve mechanisms v1 and v2 are selected and the operations of the two working parts are controlled by operating the control lever b by selecting the direction of its tilting rotation.

By the way, there are several patterns of control performed by tilting and rotating the control lever b left and right and back and forth, depending on the combination of working parts controlled by the parallel valve mechanisms Vl@'V2 of the hydraulic switching valve device V. For example, the working parts controlled by the parallel valve mechanisms v1 and v2 of the hydraulic switching valve device V are a cylinder CYl that controls the steering of the vehicle body, and a cylinder CYz that controls the rotation of the arm of the backhoe. The valve mechanism v1 that controls the steering cylinder CYl is connected to the operating point 2 of the operating member d, and the cylinder C for arm rotation is connected to the operating point 2 of the operating member d.
In the case where the valve mechanism v2 that controls Y2 is connected to the operating point 3 of the operating member e, the control lever b
When the control lever b is tilted and rotated in the left and right direction, the steering is controlled by hitting the operating point 1 provided on the actuating member d, and when the control lever b is tilted and rotated in the front and rear direction. Sometimes, the actuation of the packet is controlled in conjunction with the actuation point 4 provided on the actuation member e.

The first control pattern is t<
When control lever b is tilted and rotated in the left and right direction, packet control is performed in conjunction with the operating point 4 of actuating member e, and when control lever b is tilted and rotated in the front and rear direction, the operating point provided on actuating member e is There is a second control pattern 2-7i in which the steering is controlled in conjunction with the control lever b. When performing alternating control by selecting the direction of tilting rotation, each backhoe manufacturer independently selects two control patterns with different directions. For this reason, a person who is accustomed to operating the vehicle body according to the first control pattern is likely to make erroneous operations when handling the vehicle body according to the second control pattern, making it difficult to use the system.

In this case, when the control lever b is tilted left and right or front and back, the connection with the actuation point l provided on the first actuation member d or the actuation point 4 provided on the actuation member e is When moved, the actuating member d
When the control lever b is rotated back and forth, it is connected to the operating point 4 provided on the operating member e, and when the control lever b is rotated left and right, the operating point 4 provided on the operating member e is linked. When connected to the operating point 4 provided on the operating member d and rotated back and forth, the i! Either a switching means is provided to switch between the two states, or the valve mechanism vl and the valve mechanism v2 of the hydraulic switching valve device V at the operating point 2 provided on the operating member d and the operating point 3 provided on the operating member e are provided. If a switching means for alternately switching the connections is provided in the linking portion, the result of the second control pattern can be obtained by operating the lever according to the first control pattern by operating the switching means. The result of the first control pattern is obtained by operating the lever according to the second control pattern, and the problem is solved. However, since such a switching means requires a complicated mechanism to modify the interlocking mechanism, it is troublesome to manufacture, and there is a problem that the control operation by rotating the control lever b becomes uncertain. come.

The present invention has been made to solve these problems occurring in conventional means, and uses a simple mechanism without adding a complicated mechanism or increasing the number of spindles. Another object of the present invention is to provide a new means that allows control pattern switching to be performed accurately with a simple operation.

In the present invention, as a means to achieve this object, the frame is provided with a double shaft in which a cylindrical outer shaft is rotatably fitted to the outer periphery of the inner shaft on one half side in the axial direction. A support shaft having a rod-shaped side is supported so as to be slidable in the axial direction, and the support shaft is provided with an actuating point connected to a control lever, and a control part of one working part. a third actuating member having another actuating point connected to the control lever; and a fourth actuating member having an actuating point connected to the control part of another working part. The actuating members 2 are arranged side by side in that order, and the shafts are mounted so that they can freely slide in the axial and rotational directions. The member is mounted on a shaft so as to be slidable in the axial direction and rotational direction, and the continuous action member and the fourth action member are linked in the rotational direction via a linking mechanism on their outer peripheral sides, and one half side of the support shaft is The outer periphery includes a state in which the first actuating member and the second actuating member are coupled in the rotational direction and a state in which the first actuating member and the linking actuating member are coupled in the rotational direction by the pushing operation and the pulling out operation in the axial direction of the support shaft. A key is provided to switch between the two states.

The outer periphery of the other side of the support shaft shows a state in which the third actuation member and the fourth actuation member are coupled in the rotational direction by the pushing operation and the pulling out operation in the axial direction of the support shaft, and the state in which the third actuation member and the fourth actuation member are connected in the rotational direction. The present invention proposes a control pattern switching device for a control lever in a civil engineering vehicle, etc., which is provided with a key for switching between a state in which the second actuating member is coupled to the second actuating member in the rotational direction.

Next, embodiments will be described in detail with reference to the drawings. Note that the same reference numerals in the drawings are used for constituent members having the same effect as in the previous means.

FIG. 4 is a perspective view of the main parts of a control lever switching device that can implement the present invention, and FIG. 5 is a cross-sectional plan view of the main parts of the same.
In the same figure, b is the control lever, C is the support shaft, and C is the control lever.
7 is one half side of the support shaft C formed into a double shaft, C2
The other side of the support shaft C, dl, dl, and el, and C2 are arranged in parallel in the axial direction and are slidably slidable in the axial and rotational directions on the support shaft C. The first operating member, the second operating member, the third operating member, and the fourth operating member are supported, f is a frame that supports the support shaft C so as to be slidable in the axial direction, and g is the above-mentioned parallel first to fourth operating members. A linked operating member arranged on one side of the four operating members d1, dl, el, and C2 and pivotally supported on a support shaft C; h is I! 1g operating member g and the fourth
A linkage mechanism that links the actuating member e2 is shown.

The control lever b is a normal control lever mounted on the vehicle body a (FIG. 1) so as to rotate in the left-right direction and the front-rear direction, and its pivoting means for the vehicle body a are omitted in the drawing.

The support shaft C is suspended between a pair of shaft support members 51 and 53 that are installed on a frame f provided on the vehicle body a so as to be freely movable in the axial direction, and has one end facing toward the outside of the vehicle body a. is extended to protrude outside from the machine wall 50 which is the outer surface of the vehicle body a, and a gripping part 60 is provided at the protruding end.
It is designed to move freely in the axial direction by holding and pushing and pulling.

The support shaft C has an inner shaft 61 having a small diameter and an outer shaft 62 having a cylindrical shape that rotatably fits on the outer periphery of the support shaft C1. The outer diameter of the other side C2 is the same as that of the outer shaft 62.
It is formed in the shape of a large diameter shaft that is aligned with the outer diameter of the rod. The end of the large-diameter rod-shaped shaft (II c z Annular grooves 63 and 64 for regulating movement in the axial direction are arranged to face the regulating pole 52 when the support shaft C is pushed in and pulled out.

Each of the first to fourth actuation members d1 to e2 and the linked actuation member g is provided with a through hole in the axial center portion that fits into the outer periphery of the support shaft C, and has an axial width of the same size. It is formed into an aligned boss shape. Each of these actuating members is fitted onto the outer periphery of the support shaft C so that they can freely slide in the axial and rotational directions, with their axes aligned and closely aligned with each other. However, with respect to the vehicle body a, the axial movement is suppressed by the shaft support members 51 and 53 that pivotally support both ends of the support shaft C, so that the 11 position is fixed.

As shown in FIG. 2, the first actuating member d1 among these actuating members has an actuating point 1 that is linked to the actuation when the control lever b is rotated back and forth. The actuating member d of the prior means, which has an actuating point 2 that transmits to the control part controlling the working part, is axially
If the two sides are divided into one side, which has actuation point 1 connected to control lever b, and the other side, which has actuation point A, which connects to the control part that controls the working part, When the control lever b is rotated in the front-rear direction, the first actuating member d1 is activated in conjunction with the operation thereof.
An actuating point l is provided at which the rotation occurs.

Further, the second actuation member d2 replaces the previous actuation member d by two.
An operating point 2 is provided which corresponds to the other side when separated and is connected to a control section that controls the working section.

Further, the third actuation member el has an actuation point 4 that is linked to the actuation when the control lever b is rotated in the left and right direction.
The actuating member e of the previous means, which has an actuating point 3 connected to the control part of the working part, is divided into two parts in the axial direction, and one half side has an actuating point 4 that repeatedly hits the control lever b side, and the control part. This corresponds to one half of the side when separated from the other side with the operating point 3 connected to the
It has only an operating point 4 that operates in conjunction with the operation when the is rotated in the left-right direction.

The @4 actuating member e2 corresponds to the other side when the previous actuating member e is divided into two as described above, and is provided with only the actuating point 3 connected to the control section that controls the working section.

Further, the linked actuation member g is formed in an idler shape not having four actuation points, and the first to fourth actuation members d1=
It is positioned on the outside of the first actuating member dl, which is one side of e2, and is pivotally supported on a support shaft C.

And this linkage member g is connected to the fourth link member g via the linkage mechanism.
It is connected to the actuating member e2, and the i! The fourth actuating member e2 rotates in conjunction with the rotation of the linking actuating member g, and the rotation of the fourth actuating member e2 causes the successive actuating member g to rotate.

The connection between the connection member g and the fourth actuation member e2 may be such that they are integrally coupled in the rotational direction and rotate together, or may be connected so that they rotate in opposite directions.

Troublesome link U mechanism h *This is an example of the latter, and the link operation member g
A support shaft C is attached to the tip of the arm 80 that projects in the radial direction from
Connect one end side of the connecting rod 81 parallel to the connecting rod 8.
The other end of the lever rod 83 is connected to the outer end of a lever rod 83 that is pivotally supported on the frame f so as to swing and rotate about the fulcrum shaft 82, and the inner end of the lever rod 83 is connected to the fourth actuating member e2. By connecting the protruding end of the arm 84 protruding from the circumferential surface of the arm 83 via the connecting pin 85 and the elongated hole 86, when the connecting member g rotates clockwise in FIG. The fourth actuating member e2 is configured to rotate counterclockwise as the inner end rotates upward.

However, these operating members ctt fist a2・e1e2・
g is provided with key grooves 90 on the inner peripheral surface of the through holes that fit on the outer periphery of the support shaft C so as to pass through in the axial direction, and on the outer peripheral surface of the support shaft C. , two keys that freely slide in the axial direction inside these key grooves 90... have 1.kz on the outer periphery of the outer shaft 62 on one half side C1 of the support shaft C, and on the other side of the support shaft C. It is fixedly installed separately from the outer circumferential portion of the shaft rod portion of half side c2.

These keys have a length of 1.kz that spans two of the operating members, and when the support shaft C is pulled out as shown in FIG. The key 1 occupies a position straddling the first actuating member d1 and the linked actuating member g, and the key 2 occupies a position straddling the third actuating member e1 and the second actuating member d2. It becomes a state of occupation,
When the support shaft C is pushed in as shown in Fig. 6, the first actuating member cit and the second actuating member d2
The key kz is arranged and installed so that it straddles the third actuating member e1 and the fourth actuating member e2.

The embodiment device constructed in this manner operates as follows.

First, the support shaft C is pushed in as shown in FIG.

As a result, the first actuating member d, the second actuating member d2, which are arranged in parallel on the support shaft C, are coupled to the key in the rotational direction, and the third actuating member e1 and the fourth actuating member e
2 is connected to the key in the rotational direction by 2, and the linking member g is in a free state. Since the outer shaft 62 provided with the key kl freely rotates with respect to the inner shaft 61, these operating members are connected to the first
The actuating member d1 and the second actuating member d2 are a third actuating member e1 and a fourth actuating member e2, which are connected by 2 to a key provided on the outer periphery of a large diameter shaft portion integrally continuous with the inner shaft 61. It is in a state where it can rotate freely.

Therefore, in this state, if control lever b is rotated in the front-rear direction, movement is transmitted from operating point 1 to operating point 2 along the path shown by arrow I in FIG. The first valve mechanism vl, which is the control section of the engine, is now operated.

Furthermore, when the control lever b is rotated in the left-right direction, the movement is transmitted from the operating point 4 to the operating point 3 along the path shown by the arrow H in FIG. The second valve mechanism v2 is now activated.

Next, the support shaft C is pulled out as shown in FIG.

As a result, among the operating members arranged in parallel on the support shaft C, the first operating member am and the linked operating member g are coupled in the rotational direction by the key kl, and the third operating member e1 and the second operating member d2 are connected to each other in the rotational direction. - is connected in the rotational direction by 2, and the fourth actuating member e2 comes out of the key 2 and becomes free with respect to the support shaft C.

The free fourth actuating member e2 is in contact with the interlocking actuating member g via the interlocking mechanism, so that it is engaged with the first actuating member ctt in the rotational direction.

Therefore, in this state, if control lever b is rotated back and forth, actuation point l will move, but this movement will be transmitted to actuation point 3 through the path shown by arrow ■ in Fig. 8, and will move to actuation point l. Control 1 part v2 will now be activated. Furthermore, when the control lever b is rotated in the left-right direction, the actuation point 4 is moved, but this movement is transmitted to the actuation point 2 through the path shown by the arrow ■ in FIG. The control unit vl is activated. That is, by switching and rotating the control lever b in the front-rear direction and the left-right direction, the control pattern in which the control section Vl and the control section V2 are alternately switched and controlled can be changed between the above case and the reverse state. Become.

As explained above, in the control pattern switching device for a control lever in a civil engineering vehicle or the like according to the present invention, a cylindrical outer shaft is rotatably attached to the frame f, with one half side C1 in the axial direction being the outer periphery of the inner shaft. A support shaft C, which is a mating double shaft and whose other half c2 is rod-shaped, is supported so as to be slidable in the axial direction. a second actuating member d1 having an actuating point l connected to the control lever b; a second actuating member d2 having an actuating point 4 connected to the control lever b; The third actuating member el and the fourth actuating member e2 having the actuating point 3 linked to the control unit of another working part are arranged in parallel in that order so that they can freely slide in the axial direction and the rotational direction. On one half side C1, which is mounted on a shaft and is made into a double shaft of the supporting shaft C on the outside thereof.

The linking member g is mounted on a shaft so as to be slidable in the axial direction and the rotational direction, and the linking member g and the fourth operating member e2 are linked and supported in the rotational direction via a linking mechanism on their outer peripheral sides. A first actuating member dl and a second actuating member are formed on the outer periphery of one half side C1 of the shaft C by the axial pushing operation and pulling operation of the support shaft C.
A key kl is provided on the outer periphery of the other half c2 of the support shaft C for switching between a state in which the operating member d2 is coupled in the rotational direction and a state in which the first operating member d1 and the linked operating member g are coupled in the rotational direction. is a state in which the third actuating member el and the fourth actuating member e2 are coupled in the rotational direction by the pushing operation and the pulling out operation in the axial direction of the support shaft C, and a state in which the third actuating member e1 and the second actuating member d are coupled.
Press the key 2 to switch the state in which 2 and 2 are coupled in the rotational direction.
Since it is configured with a control lever b that performs two systems of control by switching between the front and rear directions and the left and right direction.
Switching the control pattern can add complex mechanisms,
With a simple mechanism, without increasing the number of spindles,
Moreover, it can be obtained by simply pushing and pulling the support shaft C.

[Brief explanation of the drawing]

FIG. 1 is an overall schematic side view of a vehicle equipped with a control lever, FIG. 2 is an explanatory diagram of the operating mechanism of the same, FIG. 3 is a side view of the same, and FIG. 4 is a control pattern switching according to the present invention. A perspective view of the main parts of the device, FIG. 5 is a cross-sectional plan view of the same main part with the support shaft pulled out, and FIG. 6 is a cross-sectional plan view of the same main part with the support shaft pushed in. FIG. 7 and FIG. 8 are explanatory diagrams of the same operation. Explanation of drawing symbols CYI ・C70...Cylinder ■...Hydraulic switching valve device W...Operating mechanism part a...Vehicle body b...
Control le/<-C...Spindle d・e...Operating member f...Frame g...Linked operating member C1...-Faint ctt*ct2-...1st e el"C2"- 3rd, 1, 2...key vl, vl...valve mechanism l, 2, 3, 4...operating point 50...mechanism 52...regulating pole 61...inner shaft 63・64...Annular groove 81...Linking rod 83...Lever rod 85...Linking pin 90...Keyway h...Linking mechanism C2...Other side second operating member 4th Operating members 51, 53...Axle supporting member 60...Gripping part 62...Outer shaft 80...Arm 82...Fully shaft 84...Arm 8"6...Slot hole diagram procedure Amendment, October 31, 1985 1. Display of the case Amended as shown in Figures 2 and 61 of the applicant related to the 1983 Main Special @ 2201539 case. (1), Specification The description of the claim is amended as follows: (2. Claim Φ, a cylindrical outer ring is rotatably fitted into the frame f with one half side C1 in the axial direction on the outer periphery of the inner shaft. The other half c
A first actuating member d1 and a first actuating member d1 are provided with a supporting shaft C having a shaft rod shape supported so as to be slidable in the axial direction, and the supporting shaft C is provided with an actuation point l linked to a control lever. a second actuation member dz linked to the control part of the working part; a third actuation member e1 having another actuation point 4 linked to the control lever b; The fourth actuating member ez, which connects the actuating point 3 A4l0, is arranged in parallel in that order, and is mounted on a shaft so that it can freely slide in the axial direction and rotational direction, and the supporting shaft C is An interlocking member g is mounted on a double shaft c1 so as to be slidable in the axial direction and rotational direction, and the interlocking member g and the fourth operating member e2 are connected to each other on their outer peripheral sides by a linkage mechanism. The outer periphery of the single stroke c1 of the support shaft C is connected in the rotational direction via the
A key for switching between a state where the first actuating member dl and the second actuating member d2 are coupled in the rotational direction and a state where the first actuating member d1 and the linking actuating member g are coupled in the rotational direction is provided with a support shaft. On the outer periphery of the other side c2 of C, there is a state in which the third actuating member e1 and the fourth actuating member e2 are coupled in the rotational direction by the pushing operation and the pulling out operation in the axial direction of the support shaft C, and the third actuating member A control pattern switching device for a control lever in a civil engineering vehicle, etc., in which a key 2 is provided for switching between a state in which e1 and a second actuating member d2 are coupled in the rotational direction. ” In the 5th line of page 10 of the specification, the statement “with the fourth actuating member 2” is amended to “f” and “the fourth actuating member” with j.

Claims (1)

[Claims] (1) In the frame f, one half of the axial side c1 is a double shaft in which a cylindrical outer shaft rotatably fits on the outer periphery of the inner shaft, and the other half c2 is a rod-shaped support shaft c. an actuating member d1 which is slidably supported in the axial direction and has an actuating point 1 connected to the control lever b on the support shaft c, and a second actuating member d1 which is connected to the control part of the working part. an actuating member d2, a third actuating member e1 comprising a further actuating point 4 connected to said control lever b, and a fourth actuating member comprising an actuating point 3 connecting to the control of another working part; The members e2 are arranged in parallel in that order, and a linkage operating member is mounted on one half side c1, which is a double axis of the support shaft c, and is mounted on a shaft that can freely slide in the axial direction and rotational direction. g is mounted on a shaft so as to be slidable in the axial direction and the rotational direction, and the connecting actuation member g and the fourth actuating member e2 are connected in the rotational direction via a connecting mechanism h on their outer peripheral sides, and the supporting shaft c is On the outer periphery of one half side c1,
Due to the axial pushing and pulling operations of the support shaft c, the first actuating member d1 and the second actuating member d2 are connected in the rotational direction, and the first actuating member d1 and the linked actuating member g are connected in the rotational direction. A key k1 is provided on the outer periphery of the other half c2 of the support shaft c, and a third actuation member e1 and a fourth actuation member are provided on the outer circumference of the other half c2 of the support shaft c. e2 in the rotational direction and the third actuating member e1
A control pattern switching device for a control lever in a civil engineering vehicle or the like, which is provided with a key 2 for switching between a state in which the first actuating member d2 and the second actuating member d2 are coupled in the rotational direction.