JP3251500B2 - Self-propelled work equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled vehicle (hereinafter referred to as "the present invention") having a working device in a turnable upper body and a hydraulic drive source and undercarriages such as crawlers or wheels on a base frame of the lower body. Self-propelled working device which is connected to a working machine such as a pit excavator.

[0002]

In an urban area of a city, etc., in order to connect a work machine to the machine and to perform a linked work with a work device on the machine side, it is easy to move in the field and to work during work. It is desirable to reduce the area occupied by this. The present invention
A working machine that uses a power source in the machine is connected to the lower body of the machine equipped with the upper body working device, so that it can move straight forward and backward and steer freely, as well as the pitching direction and the rolling direction during movement. An object of the present invention is to provide a lightweight and compact self-propelled working device that has both flexibility and can be easily moved in a narrower site.

[0003]

According to the device of the present invention, the machine is provided with a working device on a revolvable upper body, and the lower body is provided with a traveling device such as a crawler belt, a power source for the working machine, an upper body revolving pedestal. An extension device consisting of a pair of hydraulic cylinders extending in the front-rear direction on the base frame and a movable frame connected to a rod of the extension device and slidable are provided. The connecting plate with a pivot that constitutes the rotary connecting device is configured to be pin-connected so as to correspond to the pitching direction, and the connecting working machine includes a connecting support plate that supports a pivot of the connecting plate on a connecting side thereof, and On the side, a pair of left and right crawler devices are supported by the machine frame via an equalizer bar and a rolling-compatible pin joint. The crawler device is preferably provided on the lower surface of the extension frame of the working machine, and a balance weight is mounted on the extension frame. The crawler of the work machine can be replaced with a wheel. A pair of left and right hydraulic cylinders are provided axially symmetrically between the working machine frame and the lower end surface or side surface of the pivot supported on the connection support plate of the working machine, and these are differentially actuated to move forward and backward. The turning radius during steering can be reduced.

[0004]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of a configuration in which a self-propelled vertical pile construction machine is used. 1 is a main body such as an excavator, 2 is a swivel base, 3 is an upper body, 4 is an operation console, Reference numeral 5 denotes a telescopic clamshell mounted as a working device. 1
Reference numeral 0 denotes a lower body which houses a power source (not shown), and has a base frame 11 provided with a pair of extension devices 12 and a movable frame 13 connected thereto. The extension device is provided with a hydraulic cylinder 1 in an outer cylinder 14 fixed on a base frame 11.
5 and a movable frame 13 is attached to each piston rod 16.
And a pin connecting portion 18 is formed on the outer end side of the movable frame to connect a work implement to obtain a degree of freedom in the pitching direction during traveling.
Reference numeral 19 denotes a traveling device such as a crawler belt. Reference numeral 20 denotes a rotary connection device, and a connection plate 21 connected to the movable frame side includes:
A pin 18 is connected to the movable frame via a pair of ears 22 protruding from the ends, and a vertical pivot 24 is drilled in the lower surface of the center to be supported on the work implement-side connection support plate 42. Reference numeral 25 denotes a mounting flange for the vertical pivot 24. 30
Is a rotation assisting device consisting of a pair of differential hydraulic cylinders provided symmetrically between the pivot 24 and the working machine frame 41. Each end of the cylinders 31 and 32 on the working machine side is attached to the machine frame 41. The other end is pivotally connected to the side or lower surface of the pivot so as to be axisymmetric. Reference numeral 40 denotes a connecting working machine known per se such as a tubing working machine. A connecting support plate 42 constituting a rotary connecting device is continuously provided on one side of the machine frame 41 and an outrigger or a stabilizer 43 for keeping the machine frame horizontal. It has. The configuration of the outer end side of the working machine is as shown in FIGS. 6 and 7, where 46 is an extension frame provided on the end side, and 47 is a pair of right and left crawlers provided at both ends of an equalizer bar 49, respectively. It is supported via bogie pins 48. Reference numeral 50 denotes a center pivot pin of the equalizer bar, which is a support frame 4 on the lower surface of the extension frame.
Rolling direction freedom is secured for 6a.
A balance weight 51 for compensating for the weight balance of the working machine is mounted on the extension frame. 52 is a stopper. In the above configuration example, the working machine is a non-towing vehicle, but the crawler may include a driving device. Also in this case, the operation of traveling and all operations is operated from the cab 4.

The above apparatus has a degree of freedom in the pitching direction by a connecting pin 18 on the machine side and a bogie pin 48 supporting a crawler 47 for the working machine, and an equalizer bar connecting the left and right crawlers on the working machine side. Center pin 50
Therefore, the degree of freedom in the rolling direction is secured, so that the vehicle can follow the road surface in the case of forward and backward movement (FIGS. 8 and 9). In the self-propelled movement, in order to avoid interference between the vehicles at the time of steering, the vehicle is separated by the extension device 12 to reduce the turning radius, and in the case of the reverse steering in FIG.
A pair of cylinders 31 and 32 provided in the rotary coupling device.
Are operated differentially to adjust the relative angle between the vehicles, and the adjustment of the left and right crawler speeds of the machine is used in combination to obtain a small turning radius. Further, since the present device has two degrees of freedom in the pitching direction, it can be moved forward and backward by self-propelling, and can also be transported by being loaded on, for example, a low-bed type trailer.

When the above devices need to be close to each other, such as during work, the movable frame 22 can be integrated with the base frame 21 as shown in FIGS. 1 and 2. As shown in FIGS. 8 and 9, the movable device 13 and the connecting plate 21 can be pushed out to the end side by the extension device 12 to increase the distance between the working machine and the vehicle. When the apparatus of the present invention travels, it is usually performed by pulling the work machine as shown in FIG. 8, but it is also possible to invert the mounting work apparatus 5 and push the work machine to travel as shown in FIG. In this case, a rotation assist device using a differential cylinder is particularly effective.

[0007]

In the apparatus of the present invention, the freedom of movement is ensured by the pin shaft 18 and the bogie pin 48 of the equalizer bar for pitching and free for rolling by the pin joint 50 of the equalizer bar when traveling in any direction. Because the degree is secured, it is possible to cope with the site where the road surface is bad. In addition, since the self-propelled device of the present invention connects the working machine to the lower body of the machine, the machine can be reduced in size and weight, and can be connected to the working machine by the movable frame extending device provided on the machine side. The interval can be freely set as required, and in cooperation with the rotation assist device, it is possible to easily enter a narrow road, travel on uneven terrain, and perform various operations.

[Brief description of the drawings]

FIG. 1 is an overall side view of the apparatus of the present invention during operation.

FIG. 2 is a plan view of the same except for an upper body working device.

FIG. 3 is a plan view of the same during turning steering.

FIG. 4 is an enlarged plan view of a swivel connection part.

FIG. 5 is a vertical sectional side view of the same.

FIG. 6 is a partially broken plan view of a work machine crawler side.

FIG. 7 is a front view of the same.

FIG. 8 is a side view when the work machine is towed.

FIG. 9 is a side view when the vehicle is moving backward.

[Explanation of symbols]

 3 Upper Body 5 Working Device 10 Lower Body 11 Base Frame 12 Extender 13 Movable Frame 15 Hydraulic Cylinder 18 Pin Shaft 19 Traveling Device 20 Rotary Connection Device 21 Connection Plate 24 Vertical Axis 30 Rotation Assist Device 40 Connection Work Machine 41 Machine Frame 42 Connection support plate 43 Outrigger 46 Extension machine frame 47 Crawler 48 Bogie pin 49 Equalizer bar 50 Center pin 51 Balance weight

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa Sho 61-134494 (JP, U) Japanese Utility Model Showa 63-293232 (JP, U) Japanese Utility Model Showa 64-22580 (JP, U) Japanese Utility Model Showa 56- 46672 (JP, U) Fully open 1986-84738 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E02F 9/08 E02D 7/20

Claims (2)

(57) [Claims] In a self-propelled working device in which the machine and a working machine are connected, the machine includes a working device in a swingable upper body, and the lower body includes a hydraulic drive source and a traveling device in a base frame. A stretching device comprising a pair of hydraulic cylinders extending in the front-rear direction on the base frame, and a movable frame connected to a rod of the stretching device and slidable,
A connecting plate with a rotating pivot is pin-connected to the outer end side of the movable frame so as to correspond to the pitching direction, and the connecting working machine includes a connecting support plate for supporting a pivot of the connecting plate on its connecting side. A self-propelled device comprising a rotary coupling device between the movable frame and a pair of right and left crawler devices and the like on the other side supported by the machine frame via an equalizer bar and a pin joint corresponding to a rolling direction. Work equipment. 2. The apparatus according to claim 1, wherein a pair of hydraulic cylinders are provided between the working machine frame and the pair of hydraulic cylinders symmetrically about a pivot supported on a connecting support plate of the working machine. A self-propelled working device including a steering turning device adapted to be operated.