JPS63194036A - Driver seat - Google Patents

Abstract

PURPOSE:To improve the efficiency of work and the safety, by providing the front section of a standard driver seat, removably with an auxiliary driver seat, and by connecting them removably to each other so that the respective operating means of both the driver seat may be interlocked with each other. CONSTITUTION:On the front section of a standard driver seat 6, an auxiliary driver seat 16 is removably fitted via a driver seat fitting vertical-frame 25. They are connected to each other so that the left and right operating levers 23, 24 of the auxiliary driver seat 16 may be interlocked with the left and right operating levers 39, 40 of the standard driver seat 6, respectively. Accordingly, when working tools are inserted into a vertical slot or a groove to perform works, then the auxiliary driver seat 16 is fitted on the front section of the standard driver seat 6 to perform the works, and by this method, underground working sections can be monitored by the operator of the auxiliary driver seat 16, and so the efficiency of work and the safety can be improved.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is applicable to underground work, which is performed by inserting a working tool such as a digging tool from above into an underground recess such as a pit or trench, and above-ground or underground work. This invention relates to a driver's seat for a self-propelled work machine that can be switched between two modes.

(Prior technology) A hydraulic excavator is used as a base machine, and a telescoping arm is attached to the tip of the arm or boom to ensure compatibility.
In a working machine that excavates a pit etc. by attaching a packet to the lower end of the telescoping arm.

When the excavated area becomes deep, the excavated area or its vicinity cannot be seen by the operator in the driver's seat, making it difficult to perform efficient excavation, and there is also a risk of damage to working tools and underground objects. In addition, in order to solve these problems, some models have a structure in which the position of the driver's seat can be adjusted forward and backward, but this increases the complexity of the device and makes it difficult to use it for shaft excavation, compared to how often it is used as a hydraulic excavator. The problem was that it was uneconomical because it was done infrequently.

(Problems to be Solved by the Invention) In view of the above-mentioned problems, the present invention improves work efficiency and safety by enabling the operator to visually observe the work area, and has a simple configuration. The purpose of this invention is to provide a driver's seat with a crane configuration at a low price.

(Means for Solving Problem c) In order to achieve this object, the present invention provides a self-propelled vehicle that can be used for switching between underground work, which is carried out by inserting a working tool from above into a pit, etc., and work on the ground or on the ground. In the driver's seat of a type work machine, an auxiliary driver's seat is detachably provided in front of the standard driver's seat, and the operating means of the auxiliary driver's seat and the operating means of the standard driver's seat are detachably attached so that they are interlocked. It is characterized by being connected to.

(Embodiment) An embodiment of the driver's seat according to the present invention will be described below with reference to the drawings. FIG. 1 shows a working machine equipped with a driver's seat according to the invention in a working state. This work machine uses a hydraulic excavator as a base machine, which has been modified into a pit excavator, and an upper rotating body 3 is installed on a lower traveling body l via a rotating device 2.
A boom 5 is mounted on the upper revolving body 3 so as to be able to rise and fall freely by a boom cylinder 4, and a standard driver's seat 6 is installed for use by an operator when the excavator is used as a hydraulic excavator. A telescoping arm 9 is rotatably attached to the tip of the boom 5 by an arm cylinder 8 around the bin 7, and an openable and closable packet IO is attached to the lower end of the telescoping arm 9.
It hangs down rotatably around 1. The telescoping arm 9 is made by telescopically combining three large, medium and small cylindrical arms, and has a telescoping hydraulic cylinder (not shown) attached inside. , due to the expansion and contraction of the opening/closing hydraulic cylinder 12,
This work machine opens and closes a pair of packet shells 13 and 14, and 15 indicates an excavated pit.
When used as a hydraulic excavator, a non-telescopic arm or a telescoping arm is attached to the tip of the boom 5 so that it can rotate freely using an arm cylinder 8, and a rotary packet is attached to the tip of the arm so that it can rotate freely using a packet cylinder. Alternatively, it is used to perform excavation work on slopes, etc.

Reference numeral 16 denotes an auxiliary driver's seat that is removably attached to the front of the standard driver's seat 6 according to the present invention.As shown in FIG. Supports 18 and 19 are erected on the right side, the upper part of the support 18 is bent to form a ceiling frame 18a and a top plate 20 is attached, and a wire mesh is installed on the right side to prevent excavated earth and sand from falling into the driver's seat 16. 21 is stretched, and the front and left side are open. Also, on the floorboard 17 are a chair 22 and an operating lever 23.
24 is installed. - Figures 3 and 4 show the mounting structure of the auxiliary driver's seat 16, and 25 shows the mounting structure of the driver's seat, which has a cross-sectional shape fixed by welding or the like, to the left and right sides of the front part of the frame 26 of the upper revolving superstructure 3. The vertical frame 27 is a horizontal frame for attaching the driver's seat and has an L-shaped cross section and is constructed by welding both ends to the upper part of the vertical frame 25.

Bolt insertion holes 28 and 29 are provided in the middle and front portions of the vertical frame 25, respectively, and bolt insertion holes 30 are also provided on the left and right sides of the horizontal frame 27.

On the other hand, on the left and right sides of the bottom of the floor plate 1 of the driver's seat 16, plates 31 are fixed by welding or the like so as to protrude rearward, and the plates 31 and the floor plate 17 are attached to the parts that overlap with the plate 31. The bolt insertion hole 28.2 of the vertical frame 25 is
9 are provided with bolt insertion holes 32 and 33 corresponding to each other. Furthermore, a plate 34 corresponding to the horizontal frame 27 is attached to the rear end of the upper surface of the floor plate 17, reinforced by ribs 36, and bolt insertion holes 35 are provided at both ends of the plate 34, respectively. . Therefore, when attaching the auxiliary driver's seat 16 to the standard driver's seat 6, the rearward protrusion of the plate 31 is inserted between the vertical frame 25 and the horizontal frame 27, and the plate 34 is attached to the horizontal frame. 27 face to face,
For installation, connect the bolt insertion holes 32, 33.35 of the plates 31°34 to the bolt insertion holes 28, 29 of the frame 25.27, respectively.
30° and tighten bolts 37 and nuts 38.

When the auxiliary driver's seat 16 is installed, the left and right operation levers 23 and 24 (see Fig. 5) attached to the auxiliary driver's seat 16 are used to raise and lower the boom 5, rotate the boom 5, extend and retract the telescoping arm 9, and control the packet 10. The left and right operating levers 23 and 24 of the auxiliary operation W16 are connected to the left and right operating levers 39 and 40 provided on the standard driver's seat 6, respectively, so that the arm cylinder 8 can open and close the telescopic arm 9 and rotate the telescopic arm 9 using the arm cylinder 8. They are detachably connected so as to interlock. Below this operation bar 2
The connection structure of 3.24 and 39.40 will be explained.

These operating levers 23, 24, 39, 40 are all made of universal levers as shown in FIG. 6 for operating lever 23. That is, on the upper front surface of the cylindrical support base 41 fixed on the floor plate 17, there are bearings 4 facing forward and backward.
3 is fixed, a shaft 42 is rotatably inserted into the bearing 43, and a bearing 44 is fixed to the inner end of the shaft 42 facing left and right, and is rotatably inserted into the bearing 44. A block 46 is fixed to the shaft 45 with bolts 47.

A shaft 48 is fixed to the rear part of the block 46 so that its axis is located on the axis of the longitudinal shaft 42, and a shaft 48 is fixed to the left side of the block 46 so that the shaft center is located on the axis of the horizontal shaft 45. The axes 49 are fixed so that the center is located, and these axes 48
．． 49 are connected to the upper ends of the lots 52, 53 via spherical joints 50, 51, respectively. Also, block 4
The portion between the shafts 48 and 49 of 6 is connected to the lower end of the operating lever 23.

On the other hand, as shown in FIGS. 5 and 7, the floor plate 17 has front and rear shafts 55.5 each supported by three bearings 54.
6, two each, cylinder 57.58 and 59.60
are rotatably fitted into these cylindrical bodies 57 to 60,
Horizontal levers 61 to 64 are fixed to each. The lower ends of the rods 52 and 53 are connected to the cylindrical body 5, respectively.
connected to a horizontal lever 61.63 fixed to 7,59;
When the operating lever 23 is moved left and right, the rod 53 moves up and down and the cylinder 59 rotates, and when the operating lever 23 is moved back and forth, the rod 52 moves up and down and the cylinder 57 rotates.

Vertical levers 65.6 are attached to the bottom surfaces of these cylinders 57, 59.
6 are fixed to each other, and one end of a rod 69, 70 is connected to each vertical lever 65, 66 through a joint 67, 68, respectively, and the other end of each rod 69, 70 is connected to the vertical lever 65, 66, which is provided in the standard driver's seat 6. Vertical lever 7 of cylinder bodies 57A, 59A
1.72 via joints 73 and 74 in a detachable manner. The cylindrical bodies 57A and 59A are rotated by the longitudinal and lateral movements of the operating lever 39 on the standard driver's seat 6, respectively. Each cylindrical body 57A, 59A is connected to one end of a lot 77.78 via a joint 75, 76, respectively, and the other end of each lot 77.78 is connected to a swing motor and a control valve operating device of the arm cylinder 8, respectively. ing. Therefore, by operating the operating lever 23, the rod 77 or 78 moves back and forth, turns, or rotates the telescopic arm 9, and the operating lever 39 also moves in conjunction.

Similarly, the operating lever 24 has a rod 79 that is linked to the longitudinal movement of the operating lever 24 and is connected to a horizontal lever 62 fixed to the cylinder 58, and a rod 79 that is linked to the horizontal movement of the operating lever 24 and is connected to the cylinder 60. and a rod 80 connected to a fixed horizontal lever 64. One end of a rod 83 is connected to a vertical lever 81 provided on the cylindrical body 58 via a joint 82, and the other end of the rod 83 is connected to a vertical lever 84 of a cylindrical body 58A provided in the standard driver's seat 6. They are detachably connected via a joint 85.

Further, two vertical levers 86.87 are fixed to the cylinder 60, and one end of a loft 90.91 is connected to each vertical lever 86.87 via a joint 88.89, respectively. The other end of the rod 90.91 is a vertical lever 92.93 of the cylinder 60A provided in the standard driver's seat 6.
are removably connected to each other via joints 94 and 95, respectively. The cylindrical body 58A is rotated by the back and forth movement of the operating lever 40 on the standard driver's seat 6, and the vertical levers 84 to 84 of the cylindrical body 58A are connected to one end of a loft 97 via a joint 96. , the other end of the rod 97 is connected to the control valve operating device of the boom cylinder 4.

Further, the cylindrical body 60A is rotated by the left and right movement of the operating lever 40 on the standard driver's seat 6, and the vertical levers 92 and 93 of the cylindrical body 60A are rotated through joints 98 and 99, respectively. Lot 100. The other end of the rod 100 is connected to one end of the rod 100, and the other end of the rod 100 is connected to an operating device for a control valve of a packet cylinder (not shown) when used as a standard driver's seat 6, that is, when used as a hydraulic excavator. connected to something. When used as a hydraulic excavator, the other end of the rod is connected to an operating device for a control valve for extending and retracting the arm in a case where the arm is extendable and retractable. On the other hand, when installing the auxiliary driver's seat 16, the telescoping arm 9, and the retractable packet 10, the control valve of the operating device connected to the lot 100 is used as the control valve of the hydraulic cylinder 12 of the retractable packet 10, and the rod The control valve of the operating device connected to the lot is used as a control valve for the built-in hydraulic cylinder of the telescopic arm 9, and the hydraulic pressure of the packet 10 is controlled by a mechanical switching device such as a switch or lever (not shown) provided in the auxiliary driver's seat 16. It is determined whether to operate the cylinder 12 or the built-in cylinder of the telescopic arm 9. Also, on the same line, there is a control lever 2.
The rod 83.97 moves back and forth by the back and forth operation in step 4.
By operating the operating lever 24 left and right, the rod 90. too and lots 91, 101 move back and forth, and the operating lever 40
are also linked. In addition, instead of using the cylinder body 60.6OA for two actuators, it is also possible to have a configuration in which each actuator is provided with a cylinder body and an operation lever independently.Also, when installing the auxiliary driver's seat 16, Vertical levers 71, 72, 84, 92.93 are connected to rods 69, 70, 83, 90.91 via couplings 73, 85, 94.95, which are connected to rods 77.
7B, 97, 100° 101 is modified to have two connection parts, but the vertical levers connected to the rods 69, 70, 83, 90.91 must be connected separately. It may be provided.

In this way, when excavating a pit 15 by attaching the telescoping arm 9 and the retractable packet 10 to the boom 5 of a hydraulic excavator, the auxiliary operator's seat 16 can be attached to the front of the standard operator's seat 6 to carry out the work. , the excavated location at the bottom of the pit 15 can be visually observed from the auxiliary driver's seat 16.

In the above embodiment, an example was shown in which the hydraulic excavator is used as a recombinant with a pit excavator.

It can also be applied when a working machine such as a pile driver is recombined with a working machine of the same type or a different type underground, and it can also be applied to a machine that uses electric power instead of a hydraulic device as a driving source.

(Effects of the Invention) As described above, the driver's seat of the present invention has an auxiliary driver's seat detachably provided in the front part of the standard driver's seat, and an operating means for the auxiliary driver's seat and an operating means for the standard driver's seat. and are removably connected so that they work together,
When performing work by inserting a work tool into a pit or trench, the auxiliary driver's seat can be attached to the front of the standard driver's seat, allowing the operator in the auxiliary driver's seat to visually inspect the work area underground. This improves work efficiency and safety. In addition, labor savings are achieved because there is no need for a worker to visually inspect the underground work area. Furthermore, there is no need for a drive device, a guide device, or an operating device for adjusting the position of the driver's seat, resulting in a simple structure that can be implemented at low cost.

[Brief explanation of the drawing]

Fig. 1 is a side view of a working machine showing an embodiment of the driver's seat of the present invention, Fig. 2 is a perspective view of a portion of the working machine excluding the front attachment, and Fig. 3 is an installation of the driver's seat of the embodiment. is an exploded perspective view of the device, FIG. 4 is a side view of the driver's seat of the embodiment, and FIG. 5 is a front view showing the operating device of the auxiliary driver's seat of the embodiment.
FIG. 6 is an enlarged sectional view taken along the line A-A in FIG. 5, and FIG. 7 is a plan view showing the coupling structure of the operating device in this embodiment.

Claims (1)

[Claims] Underground work is carried out by inserting working tools from above into a pit etc.
In the driver's seat of a self-propelled work machine that is used for work on the ground or on the ground, an auxiliary driver's seat is detachably provided in front of the standard driver's seat, and an operating means for the auxiliary driver's seat and an operation for the standard driver's seat are provided. A driver's seat characterized in that the means and the means are removably connected so that they interlock.