JP3269804B2 - Swivel crawler carrier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a revolving crawler carrier which is used for forest road construction, river construction, and the like, and has a crawler-type traveling body on which a carrier, a driver's seat, and the like are mounted via a revolving device.

[0002]

2. Description of the Related Art Since a revolving crawler carrier is capable of revolving a dump vessel, the direction of dumping can be changed without changing the direction of a vehicle body on narrow irregular terrain, soft ground, or the like in forest road construction or river construction. There is such convenience.

[0003] As such a revolving crawler carrier, as described in Japanese Utility Model Registration No. 3035735, a carrier, a driver's seat, a power unit, and the like are used as described in Japanese Utility Model Registration No. 3035735 in order to absorb vibration when the carrier is lowered and vibration during traveling. There is a structure in which a vibration isolating rubber is interposed between an upper structure made of a material and a revolving plate. That is, frames are provided in two rows on the left and right sides of the revolving plate, and vibration isolating rubbers are arranged in two rows on the left and right between the frame and the main frame on which the upper structure is mounted, thereby constituting a vibration isolating mechanism. In addition, a rubber stopper is provided as a vibration stopper against a downward load and a longitudinal load as an anti-sway at the time of overload, and an air spring method is used as a mechanism for preventing upward overload from jumping up.

[0004]

In the above-mentioned conventional structure, the vibration isolating rubbers are arranged in two rows in a vertical direction, and the vibration isolating mechanism in the vertical and horizontal directions is good. Few. In addition, rubber stoppers are installed for the down load and the longitudinal load to prevent the overload from oscillating.However, the mechanism for preventing the overload from jumping up is of the air spring type. Is complicated and too expensive.

In addition, a bracket for mounting a stopper is partially provided on the main frame, so that the structure of the main frame is complicated, and the strength is weakened by stress concentration.

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a rotating crawler carrier having a simple structure, effective vibration damping action, and a simple and rigid structure, excellent durability, and low manufacturing cost. The purpose is to provide.

[0007]

According to the first aspect of the present invention, a turning device is installed on a traveling body having a crawler, and a polygonal or circular inner frame is fixed on a turning wheel of the turning device. the main frame having a coupling portion of the frame, said fixed via a cushioning material to the inner frame, equipped with a superstructure in the main frame, said In'nafure
Rubber stock on either the
And a rubber when the upper structure rises.
By providing a receiving member against which the stopper presses,
It is characterized in that a lifting device for the frame is configured .

According to a second aspect of the present invention, a turning device is installed on a traveling body having a crawler, and a polygonal or circular inner frame is fixed on a turning wheel of the turning device, and a shape corresponding to the inner frame is provided. A main frame having a connection portion with the inner frame is fixed to the inner frame via a vibration isolating rubber arranged over the entire circumference of the inner frame, and an upper structure is mounted on the main frame.

As described above, the cushioning material or the vibration isolating rubber is disposed all around the inner frame, and the main frame is fixed to the inner frame via the rubber isolating rubber, so that the vibration isolating structure is formed all around the inner frame. Is realized. Thereby, an effective anti-vibration effect is provided in the up, down, left, right, front and back directions. In addition, since the inner frame corresponding portion of the inner frame or the main frame has a closed polygon or circular shape, the structure is simple and solid, and even for an impact generated during running on uneven terrain, together with the vibration isolating structure, Excellent durability and low production cost. Also the mainframe
By adopting a structure that limits the lifting of
Excessive deformation of the rubber is prevented, and durability is further improved.
To improve.

According to a third aspect of the present invention, in one of the first and second aspects, a rubber stopper is provided on one of the inner frame and the main frame, and the rubber stopper is provided on the other when an overload of the upper structure occurs. A device for absorbing an impact due to an overload from the upper structure is provided by providing a receiving member against which the upper structure is pressed.

As described above, by adopting the structure for absorbing the impact load, an excessive load is not applied to the vibration isolating rubber.
The durability is further improved.

[0012]

According to a fourth aspect of the present invention, in any one of the first to third aspects, the mounting position of the inner frame with respect to the revolving wheel corresponds to a displacement of the center of gravity of the upper revolving structure in the front-rear direction. It is characterized by being set.

Thus, by using a common frame for the upper structures having different positions of the center of gravity, economy can be achieved.

[0015] The invention of claim 5 is the invention according to claims 2 to 4.
In any one of the above embodiments, the anti-vibration rubber mounting surface of the inner frame and the anti-vibration rubber mounting surface of the main frame opposed thereto are tilted, and the anti-vibration rubber is tilted and mounted between these tilted surfaces. .

As described above, the mounting surfaces of the vibration damping rubbers of the inner frame and the main frame are inclined, and the rubber damping rubbers are tilted and attached. An effect can be provided, and the number of rubbers can be reduced, so that economy can be achieved.

[0017]

FIG. 1 is a side view showing an embodiment of a revolving crawler carrier according to the present invention, FIG. 2 is a plan view thereof, FIG. 3 is an enlarged view of a main part of FIG. 1, and FIG. FIG. 3 is a plan view showing the shape of the inner frame. 1 to 4
In (A), 1 is a crawler type traveling body, 2 is a turning device installed on its frame, 3 is a turning motor, 4
Numeral 5 indicates a turning joint, and numeral 5 indicates a center joint for supplying pressure oil to a traveling motor or the like of the traveling body 1.

As shown in FIGS. 3 and 4A, a rectangular inner frame 6 is fixed on the turning wheel 4 by bolts 7, and a bottom plate portion to which the turning motor 3 and the center joint 5 are attached. 8 and a vertical frame portion 9.

Reference numeral 10 denotes a main frame. The main frame 10 is connected to the connecting portion 1 corresponding to the inner frame 6.
1 is a rectangle, a portion 12 extending rearward of the joining portion 11
Is a supporting portion of the dump vessel 13, and the dump vessel 13 is attached to the rear end thereof so as to be able to move up and down around a pin 14 (see FIG. 1). 15 is the dump vessel 13
This is a hydraulic cylinder attached between the main frame 10 and the dump vessel 13 for raising and lowering.

The cab 1 is located at the front of the main frame 10.
The frame unit 20 (see FIG. 1) on which the power unit 7 and the power unit 19 are mounted is integrally provided. The dump vessel 13, the cab 17, the power unit 19, and the like constitute an upper structure.

Reference numeral 21 denotes an anti-vibration rubber disposed over the entire circumference of the inner frame 6, and the inner frame connecting portion 11 of the main frame 10 is connected to the inner frame 6 by bolts 22 and nuts 23 (see FIG. 3) via the anti-vibration rubber 21. Be combined. With such a structure, transmission of vibrations to the driver's cab 17 and the like during running on uneven terrain and the like is reduced, and riding comfort is improved.

Further, in this embodiment, the vibration-proof rubber 2
In order to prevent an excessive load from being applied to 1, the following structure is adopted. That is, as shown in FIG. 3, a shelf 24 is provided on the inner frame 6, a rubber stopper 25 is provided on the upper surface of the shelf 24, and a receiving member 26 for receiving the upper surface of the rubber stopper 25 is provided on the main frame 10. ,
An apparatus for absorbing an impact due to an overload from the upper structure is provided.

A rubber stopper 27 is also provided on the upper surface of the receiving member 26, and the receiving surface 30 of the receiving member 29 fixed to the shelf 24 of the inner frame 6 is opposed to the upper surface of the rubber stopper 27 so that An apparatus for preventing the lifting of the frame 10 is configured.

As described above, the anti-vibration rubber 21 is disposed all around the inner frame 6, and the main frame 10 is connected to the inner frame connecting portion 11 via the anti-vibration rubber 21, so that the inner frame 6 An anti-vibration structure is realized all around. Thereby, an effective anti-vibration effect is provided in the up, down, left, right, front and back directions. Further, since the inner frame 6 fixed to the revolving wheel 4 and the inner frame connecting portion 11 of the main frame 10 are integrally formed into a frame shape, the structure is simple and rigid, and the impact generated during running on uneven terrain is improved. In combination with the vibration-proof structure, the durability is excellent and the manufacturing cost is low.

Further, the shock absorbing device including the rubber stopper 25 and the receiving member 26 constitutes a rubber stopper 25 when a heavy load is loaded on the dump vessel and a downward overload is applied. Receiving member 26
By pressing, it is possible to prevent the rubber cushion 21 from being excessively deformed. In addition, when the upper structure is lifted during running on uneven terrain or the like, the rubber stopper 27 is attached to the receiving member 2.
By pressing against the receiving surface 30 of the rubber 9, excessive deformation of the vibration-proof rubber 21 can be prevented. Thereby, the durability is further improved.

The rubber stopper 25 for preventing overload may be attached to the main frame 10 downward, and the lower surface of the rubber stopper 25 may be pressed against the receiving member attached to the inner frame 6 at the time of overload. The rubber stopper 27 for preventing the floating
, The receiving member attached to the main frame 10 may be pressed against the lower surface of the rubber stopper when the upper structure rises.

Further, the side view of FIG.
As shown in the front view in (B), for example, when the crane 40 is mounted in front of the turning center of the turning device 2,
When the center of gravity of the upper structure shifts forward, as shown in FIG. 4 (B), the inner frame 6 is shifted rearward with respect to the turning wheel 4 and fixed by bolts 7 to change the mounting position. The center of gravity of the structure can be adjusted to the center of rotation. As described above, even when different devices are mounted as the upper structure, the inner frame 6 having the same shape is used.
By using, economy is achieved.

FIG. 6 is a side view showing another embodiment of the present invention, and FIG. 7 is a plan view thereof. In this embodiment, a vibration-proof rubber mounting surface 32 of the inner frame 6 is opposed to the same. The anti-vibration rubber mounting surface 33 of the main frame 10 is inclined, and the anti-vibration rubber 21 is inclined between these inclined surfaces. This vibration isolating rubber 21 is attached with bolts and nuts as in FIG.

As described above, the mounting surfaces 32 and 33 of the anti-vibration rubber 21 of the inner frame 6 and the main frame 10 are inclined, and the anti-vibration rubber 21 is inclined and attached.
The vibration of the upper structure can be received obliquely by the vibration isolating rubber 21, whereby the vibration isolating rubber 21 receives a load as compared with the case where a load is applied in the shearing direction as shown in FIGS. 1 to 3. The force becomes large, and the vibration-proof rubber 21 can have not only a vibration-proof effect but also an anti-sway effect against an overload, and a rubber stopper for preventing a downward overload and an upward-sway stop are provided. No rubber stopper is required,
The number of rubbers can be reduced, and economy is achieved.

In the embodiment of FIG. 6, the anti-vibration rubber mounting surface 32 of the inner frame 6 is formed so that the outer surface of the inner frame 6 faces upward. However, as shown in FIG.
The inner surface of the outer edge of the inner frame 6 is inclined to form an anti-vibration rubber mounting surface 34, and the inclined surface 35 of the main frame 10 projects downward from the main frame 10 so as to face the anti-vibration rubber mounting surface 34. May be formed on the outer surface.

In the above embodiment, the shape of the inner frame 6 is rectangular, but it may be formed in another polygon or a circle.

[0032]

According to the first and second aspects of the present invention, a turning device is installed on a traveling body having a crawler, and a polygonal or circular inner frame is fixed on a turning wheel of the turning device. A main frame having a joint with an inner frame of a corresponding shape was fixed to the inner frame via a cushioning material or a vibration-isolating rubber disposed over the entire circumference of the inner frame, and the upper structure was mounted on the main frame. Therefore, an anti-vibration structure is realized over the entire circumference of the inner frame, and an effective anti-vibration effect is provided in the up, down, left, right, front and rear directions. Also, since the inner frame fixed to the turning wheel and the inner frame connecting portion of the main frame form a closed polygon or circle, the structure is simple and rigid, and the above-mentioned protection against impacts generated when traveling on uneven terrain is also provided. Combined with the vibration structure, the durability is excellent and the manufacturing cost is low. Ma
According to claim 1, the inner frame or the main frame is provided.
A rubber stopper is provided on one of the
When the upper structure is lifted, the rubber stopper
The main frame is lifted by providing
Since the device is equipped with a climbing prevention device,
Oscillation of rubber may be excessive due to lifting of upper structure
Deformation is prevented, and durability is further improved.

According to the third aspect, in one of the first and second aspects, a rubber stopper is provided on one of the inner frame and the main frame, and the other is provided when the upper structure is overloaded. By providing a receiving member to be pressed against, the device configured to absorb the impact due to the overload from the upper structure is configured, so that an excessive load is not applied to the vibration isolating rubber at the time of overload, and the durability is further improved. .

[0034]

According to a fourth aspect , in any one of the first to third aspects, the inner frame has a mounting position with respect to the revolving wheel corresponding to a positional shift in the front-rear direction of the center of gravity in the form of an upper structure. Since it has been changed, a common frame can be used for the upper structures having different positions of the center of gravity, so that economy can be achieved.

According to the fifth aspect , the first to fourth aspects
In either case, the anti-vibration rubber mounting surface of the inner frame and the anti-vibration rubber mounting surface of the main frame opposed thereto are inclined, and the anti-vibration rubber is mounted between these inclined surfaces with inclination. In addition to the anti-vibration effect, an anti-sway effect against overload can be provided, and the number of rubbers can be reduced, so that economical achievement can be achieved.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a revolving crawler carrier according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is an enlarged view of a main part of FIG. 1;

FIGS. 4A and 4B are plan views showing the mounting structure of the inner frame shown in FIGS.

FIGS. 5A and 5B are a side view and a front view of a crawler carrier having a crane, respectively.

FIG. 6 is a side view showing another embodiment of the revolving crawler carrier according to the present invention.

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is a side view showing a modification of FIG.

[Explanation of symbols]

1: Crawler traveling body, 2: turning device, 4: turning wheel,
6: inner frame, 10: main frame, 11: inner frame connecting portion, 13: dump vessel, 15: hydraulic cylinder, 17: operator's cab, 19: power unit, 2
1: anti-vibration rubber, 24: shelf, 25: rubber stopper, 26:
Receiving member, 27: rubber stopper, 29: receiving member, 32-3
5: Anti-vibration rubber mounting surface, 40: Crane

────────────────────────────────────────────────── ─── Continued on the front page (56) References Registered utility model 3035735 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E02F 9/02

Claims (5)

(57) [Claims] A turning device is provided on a traveling body having a crawler.
And place a polygonal or circular inner
Main frame that has a connection portion with the inner frame
Is fixed to the inner frame via a cushioning material, and the upper structure is mounted on the main frame.And Either the inner frame or the main frame
A rubber stopper on the other side, and the
Providing a receiving member against which the rubber stopper is pressed when rolling
This makes up the mainframe lifting prevention device.
Was A swivel-type crawler carrier, characterized in that: 2. A turning device is installed on a traveling body having a crawler, a polygonal or circular inner frame is fixed on a turning wheel of the turning device, and the inner frame is connected to an inner frame having a shape corresponding to the inner frame. The main frame with the part to the inner frame,
A revolving crawler carrier, which is fixed via vibration isolating rubber arranged over the entire circumference of an inner frame and has an upper structure mounted on the main frame. 3. The receiving member according to claim 1, wherein a rubber stopper is provided on one of the inner frame and the main frame, and the rubber stopper is pressed against the other when an overload of the upper structure occurs. A rotating crawler carrier, wherein a device for absorbing an impact due to an overload from the upper structure is provided. 4. In any of claims 1 to 3, the mounting position relative to the slewing ring of the inner frame,
A revolving crawler carrier, which is set in accordance with a displacement of the center of gravity of the upper revolving structure in the front-rear direction. 5. The claim 2 to 4, are inclined rubber cushion mounting surface and anti-vibration rubber mounting surface of the main frame facing the of the inner frame, vibration isolation between these inclined surfaces A swivel-type crawler carrier characterized by mounting rubber at an angle.