JPH10219741A - Slewing service car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure the stability of a machine body, and to carry out the inspection, maintenance, etc., of an engine, a fuel tank, a hydraulic fluid tank, etc., simply under the state, in which a bonnet is covered, in a slewing service car, in which at least the rear maximum size section of a superstructure is kept within the width of a travel device. SOLUTION: An engine E is arranged to a section rearer than the center line of rotation, and a bonnet covering the engine E, etc., is fixed onto a slewing frame F. An inspection window 30 is installed to a bonnet section at the rear of a superstructure B, a maintenance cover 34 capable of being opened and closed is mounted on the bonnet in the upper sections of adjacently disposed fuel tank and hydraulic-fluid tank, the oil filler port of the fuel tank is projected to the upper section of the bonnet, and the oil filler port is formed to the recessed section of the bonnet.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a revolving frame,
At the front end of an upper structure composed of a seat, an engine, a radiator, a hydraulic pump, a fuel tank, and the like, a work machine operable up and down and left and right is provided. The present invention relates to a configuration of a bonnet provided with an inspection window, a maintenance cover, and a refueling port in a turning work vehicle such as a small back turning type backhoe capable of digging a gutter in an alley through which a traveling device can pass.

[0002]

2. Description of the Related Art In a conventional turning work vehicle such as a backhoe, the technology of a standard type and an improved ultra-small turning type turning work vehicle is known. Further, a standard type backhoe is known, for example, as disclosed in Japanese Utility Model Laid-Open No. 57-202461, and an ultra-small turning type backhoe is known as, for example, Japanese Utility Model Application Laid-Open No. 1-164337.

[0003]

SUMMARY OF THE INVENTION Conventionally, Japanese Utility Model Application
As shown in JP-A-202461, there is a so-called standard type backhoe, but it has the following problems.
Since the rear portion of the revolving frame above the traveling device protruded beyond the width of the traveling device during turning, the rear portion was likely to collide with an obstacle. In particular, when digging at the side of a wall, the aircraft is moved to the side of the wall to dig a gutter, so when turning to load earth and sand on a truck stopped on the opposite side of the wall, the rear part of the turning frame is And the upper turning frame could not be turned. Therefore, excavation work in a narrow place was impossible.

In order to solve the problems of the standard type backhoe, an ultra-small turning type backhoe as disclosed in Japanese Utility Model Laid-Open Publication No. 1-164337 has been developed. In the case of this ultra-small turning type backhoe, the turning frame at the top of the traveling device does not protrude from the width of the traveling device during turning, and therefore fits within the width. Therefore, work in a narrow place becomes possible. However, when digging a gutter, the ultra-small swivel type backhoe can only operate the work implement in the vertical direction, so an offset boom mechanism is required at the top of the boom to operate the work implement in the left-right direction. By providing this offset boom mechanism at the upper part of the boom, when excavating with a bucket at the tip of the arm by tilting the offset boom of the offset boom mechanism to the side groove sideways in the left-right direction when digging the side groove, There was a problem that the offset boom mechanism came into contact with the portion and it was not possible to dig deeper than that. Also, when digging a gutter by the wall, after digging the earth and sand of the gutter, raising the working machine and standing up,
When turning to transport this earth and sand to the bed of the truck, since the boom of the work machine is offset when digging the gutter, when the work machine is raised and raised in this state, the position of the eccentric position is The rear part of the arm cylinder projects from the turning frame from the offset boom mechanism. When the turning frame is turned from this state, the rear portion of the arm cylinder projects from the rear portion of the turning frame, so that the rear portion of the arm cylinder protrudes from the width of the traveling device. Therefore, there is a problem that the arm cylinder comes into contact with the side wall and cannot turn. Further, since the offset boom mechanism exists above the boom constituting the working machine, the weight of the working machine increases. Therefore, when the work machine is extended forward, the work machine is heavy and the balance of the work vehicle is deteriorated. Also, when you raise the work machine and stand it,
Since the work machine is heavy, the position of the center of gravity of the work vehicle is increased, and stability is deteriorated. For this reason, there was a problem that work or running at a high speed was not possible. In addition, actual Kaihei 1-1
In the ultra-small turning type backhoe described in Japanese Patent No. 64337, the engine is disposed behind the center of turning, however, a hood covering the engine and the like is fixed to a turning frame, and the rear of the upper structure is fixed. There is no mention of providing an inspection window in the bonnet part of the vehicle. Further, the fuel tank and the hydraulic oil tank are arranged adjacent to each other, however, there is no description of providing a maintenance cover that can be opened and closed on a bonnet above the fuel tank and the hydraulic oil tank. In addition, there is no description that the fuel filler port of the fuel tank protrudes above the hood covering the engine and the like, and the fuel filler port is provided in a recess of the bonnet. The present invention solves the above-mentioned problems of the ultra-small turning type backhoe, secures the stability of the fuselage, and makes it possible to easily inspect the internal engine with the hood covered,
An object of the present invention is to provide a turning work vehicle capable of easily inspecting an internal fuel tank, a hydraulic oil tank, and an engine, and simplifying refueling to a fuel filler port of the fuel tank.

[0005]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. In claim 1, a swing frame is swingably mounted on the traveling device via a swing table bearing,
An upper structure is constituted by the turning frame, the seat, the engine, the radiator, the hydraulic pump, the fuel tank, the hydraulic oil tank, and the like, and a work machine operable up and down and left and right is provided at a front end of the upper structure. In a turning work vehicle in which at least the rear largest dimension portion of the upper structure is contained within the width of the traveling device, an engine is disposed behind the turning center, and a hood covering the engine and the like is fixed to a turning frame,
An inspection window is provided in a bonnet portion behind the upper structure.

According to a second aspect of the present invention, a swing frame is swingably mounted on the traveling device via a swing table bearing, and an upper structure is formed by the swing frame, a seat, an engine, a radiator, a hydraulic pump, a fuel tank, a hydraulic oil tank, and the like. A body, a work machine operable up and down and left and right is provided at a front end of the upper structure, and a turning work vehicle in which at least a rear largest dimension portion of the upper structure is accommodated within a width of a traveling device,
A fuel tank and a hydraulic oil tank are arranged adjacent to each other, and a hood above the fuel tank and the hydraulic oil tank is provided with a maintenance cover that can be opened and closed.

According to a third aspect of the present invention, a swing frame is swingably mounted on the traveling device via a swing table bearing, and an upper structure is constituted by the swing frame, a seat, an engine, a radiator, a hydraulic pump, a fuel tank, and the like. At the front end of the upper structure, a work machine operable up and down and left and right is provided, and a turning work vehicle in which at least the rear largest dimension portion of the upper structure is accommodated within the width of the traveling device, An oil filler port protrudes from an upper portion of a hood covering the engine and the like, and the fuel filler port is provided in a concave portion of the bonnet.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings. 1 is a left side view of the turning vehicle, FIG. 2 is a right side view thereof, FIG. 3 is a rear view thereof, FIG. 4 is a plan layout view in the upper structure B, and FIG. FIG. 6 and FIG.
7 is a plan view showing the arrangement of the counterweight W, the hanging hook 35, and the locking recess 36, FIG. 8 is a side sectional view of the same, and FIG. 9 is a plan view of the counterweight W. 10, FIG. 10 is a plan view showing a state in which the maintenance cover 34 is opened, FIG. 11 is an enlarged plan view of a part of the fuel tank 37, the hydraulic oil tank 38, and the maintenance cover 34.
FIG. 12 is a side cross-sectional view of the maintenance cover 34 and the inspection window 30, and FIG. 13 is a front cross-sectional view showing the relative positions of the fuel filler 33, the bonnet 6, and the maintenance cover 34.
4 is a perspective view of a state where the maintenance cover 34 is opened,
FIG. 15 is a perspective view showing a state where the maintenance cover 34 is closed.

The overall configuration of the excavator will be described with reference to FIGS. The revolving frame F is supported on the crawler traveling device 3 via a revolving table bearing 26. The hood 6 and the seat S are arranged on the revolving frame F, and the canopy C supported by the canopy posts 11 and 12 is provided on the seat S. The canopy struts 11 and 12
Also serves as a safety frame that protects the operator sitting in the seat S when falling down. A bucket 4 which is supported by the main boom 1 and the bucket arm 2 and performs excavation work is supported at a front portion of the turning frame F.
The bucket 4 is configured to be able to operate vertically and horizontally.

As shown in FIGS. 4 and 5, the upper structure B is
It comprises a revolving frame F, a seat S, an engine E, a hydraulic pump device P, a radiator 7, and the like. The maximum rear dimension of the upper structure B is within the width of the crawler type traveling device 3. The engine E is disposed rearward of the turning center of the turning frame F. The upper structure B is disposed within a turning diameter that is substantially the same as the width of the crawler traveling device 3 centered on the swivel bearing 26, and the main boom is located forward of the front end of the upper structure B. 1, a work machine including a bucket arm 2, a bucket 4, and the like are arranged, and a seat S is arranged at a position overlapping with the engine E. At the front of the seat S, an operation column 5 is provided upright. Operation pedals 25L and 25R are arranged at left and right positions of the operation column 5. Reference numeral 15 denotes a tool box provided on the left canopy mount 9.

The hood 6 is placed in a semicircular shape over the left and right sides of the revolving frame F, and a recess 16 for placing the seat S is provided at the center of the hood 6. The recess 1
To the left and right of 6, canopy mounts 8.9 supporting the canopy posts 11 and 12 are arranged. The canopy mounts 8 and 9 are stored upright in the hood 6.
At the base of the canopy struts 11 and 12, canopy boots 1
1a and 12a are attached, and the canopy support 11.1.
2 is mounted on mounting brackets 8a and 9a protruding above the right canopy mount 8.

The bases of the canopy struts 11 and 12 are covered with canopy boots 11a and 12a to improve design and provide safety. The right canopy mount 8 and the left canopy mount 9 themselves are arranged inside the bonnet 6, but the mounting brackets 8a and 9
A portion protrudes from the upper surface of the bonnet 6, and the lower portions of the canopy posts 11 and 12 are fixed to the portion by bolts. And the left and right canopy struts 11 and 12
A reinforcing rod 17 is provided between the reinforcing rods 17.
Is also used as an operator's safety bar at the rear of the seat S.

[0013] Of the canopy mounts provided on the left and right, the right canopy mount 8 is arranged on the exhaust side of the radiator 7 on the side of the engine E. The right canopy mount 8 also functions as an air exhaust guide for guiding exhaust air discharged from the radiator 7 backward. Therefore, the inside of the right canopy mount 8 is hollow, and the front side is formed as a guide plate. The radiator 7 is provided with a radiator fan 7a.

The left canopy mount 9 is disposed at a position on the left side of the engine E, which is disposed obliquely to the traveling direction, and is a hydraulic pump fixed on an extension so as to be driven by the crankshaft of the engine E. It is configured to cover the periphery of the device P. By using the left canopy mount 9, a hydraulic pump device P which is an expensive precision part
However, it is configured not to be deformed and damaged by impact or collision. As shown in FIG. 5, the seat S is provided in the concave portion 16 formed on the engine E, and the concave portion 16 can be formed by avoiding the radiator 7 having a high height. It can be placed in the position. The hood 6 above the storage side of the radiator 7 has a convex portion. The operation column 5 is arranged at the front of the seat S, and a front handrail 27 is provided at the front of the operation column 5. Seat S
The maintenance cover 34 is disposed on the right side of the vehicle, the inspection window 30 is opened at the rear of the seat S, and the counterweight W is also disposed on the turning frame F at the rear.

In FIG. 6, the radiator 7 is arranged close to the hood 6 on the outer periphery of the turning frame F.
The radiator 7 is fixed to the bonnet 6 via a vibration-proof rubber 32. This radiator 7 is attached to the vibration isolating rubber 32
As a result, the mounting bracket for the radiator 7 is no longer necessary because it is fixed to the inner surface of the hood 6. When the radiator 7 is arranged at right angles to the engine E, the area of the exhaust opening opening in the bonnet 6 is reduced. However, by arranging the radiator 7 in contact with the bonnet 6, the area of the exhaust opening is reduced. It was possible to compose a full. In the case of this embodiment, a right canopy mount 8 is arranged between the engine E and the radiator 7.

Next, the configuration of the counter weight W will be described with reference to FIGS. Counter weight W
1 is mounted and fixed on a turning frame F at the rear of the seat S as shown in FIG. 1. When the counterweight W is lifted and fixed on the turning frame F, the hanging hook 35 and the wire are fixed. It is lifted by 29. However, when the counterweight W is lifted by a normal crane truck or the like, the counterweight W is unstable, and the counterweight W may fall down or fall off, causing a personal injury. In the present embodiment, a locking recess 36 is provided so that the counterweight W can be reliably hung by the hanging hook 35 and the wire 29, and the hanging hook 35 is fitted into the portion of the locking recess 36. . As a result, the counterweight W does not fall down. In FIG. 7, a lock fitting 28 is fitted into the upper part of the counterweight W, and a wire 29 is passed through the lock fitting 28 to prevent the upper part from swinging.

Next, a description will be given with reference to FIGS. A fuel tank 37 and a hydraulic oil tank 38 are disposed inside the bonnet 6 at the front left side of the seat S, and the bonnet 6 in this portion is open. A maintenance cover 34 is openably and closably disposed at the opening.
The maintenance cover 34 is configured as a lid that is upwardly convex, and is configured so that the state of the fuel supply port 33 protruding from the bonnet 6 is stored in the maintenance cover 34.

As shown in FIG. 13, the upper portion of the fuel tank 37 from which the fuel supply port 33 protrudes is opened so that the bonnet 6 is recessed, and the fuel supply port 33 is provided in a concave portion of the bonnet 6. I have. And the upper end of the refueling port 33 is
When the maintenance cover 34 is opened, it is in a state of protruding from the hood 6. Maintenance cover 34
Is closed, the filler port 33 is covered and stored.

[0019]

As described above, the present invention has the following advantages. In claim 1,
First, a work machine is pivotally supported at the front end of the upper structure so as to be operable in the vertical and horizontal directions, and at least the largest rearmost dimension of the upper structure is within the width of the traveling device. The rear largest dimension of the turning frame fits within the width of the traveling device, and the rear portion of the turning frame does not come into contact with an obstacle during turning. Secondly, particularly at the time of digging a gutter, a work implement is pivotally supported at the front end of the upper structure so as to be operable in the up-down direction and the left-right direction, and at least the largest rearmost dimension portion of the upper structure is within the width of the traveling device. Therefore, there is no need for an offset boom mechanism, and the rear portion of the upper structure can be turned within the width of the traveling device. Thereby, the rear boom of the upper structure can be turned within the width of the traveling device, and the offset boom does not hit the edge of the groove at the time of digging the side groove, so that there is no problem that the digging is deep. Therefore, since the turning frame is turned and the work machine is operated in the left-right direction to dig a gutter, deep ditching can be performed using the entire work machine.
Third, in a turning work vehicle in which a working machine is pivotally supported at the front end of the upper structure in the vertical and horizontal directions, at least the rear largest dimension of the upper structure is set within the width of the traveling device, so that the offset boom is provided. No mechanism is needed,
The arm cylinder does not protrude from the turning frame when the work machine is set up. Therefore, at the time of turning, the rear portion of the arm cylinder does not protrude from the width of the traveling device. Therefore, it is possible to dig a gutter near the wall, and furthermore, it is possible to make a turn for loading the digged earth and sand on a truck on the opposite side of the wall. Fourth, since the work machine does not require an offset boom mechanism, the work machine is lighter, and therefore, the front-rear balance of the machine is not deteriorated.
The position of the center of gravity does not increase, but lowers, so that work and traveling can be performed at a high speed. Fifth, at the front end of the superstructure,
In a turning work vehicle in which a working machine operable in the up-down direction and the left-right direction is provided and at least the rear largest dimension portion of the upper structure is accommodated within the width of the traveling device, the engine is disposed behind the turning center. In addition, the front-rear balance of the turning work vehicle is improved, the stability of the body is improved, the work can be performed with a sense of security, and the work efficiency can be improved. Sixth, in the turning work vehicle, the engine is disposed behind the turning center of the upper structure, and the inspection window is provided in the bonnet portion behind the upper structure. An engine and the like are arranged nearby, and inspection and maintenance of the engine can be easily performed. Seventh, in the turning work vehicle, a turning frame, an engine, a radiator,
The upper structure is composed of a hydraulic pump, fuel tank, hydraulic oil tank, etc., and the bonnet covering the engine, etc. is fixed to the revolving frame. The dimension of the gap with the parts can be made as small as possible, and the whole hood can be made compact. Further, since the entire hood can be made compact, it is particularly easy to fit at least the rear largest dimension portion of the upper structure of the turning work vehicle within the width of the traveling device.

According to the second aspect, in addition to the first to fourth effects of the first aspect, the following effect is obtained. First
The fuel tank and the hydraulic oil tank are arranged adjacent to each other, and the hood above the fuel tank and the hydraulic oil tank is provided with a maintenance cover that can be opened and closed. To the fuel tank and maintenance of the hydraulic oil tank, etc. from outside. Secondly, since the fuel tank and the hydraulic oil tank are arranged adjacent to each other, and a maintenance cover that can be opened and closed is provided above the fuel tank and the hydraulic oil tank, by opening the maintenance cover, both tanks can be inspected. Can be performed simultaneously. Third, since the fuel tank and the hydraulic oil tank are arranged adjacent to each other, and the maintenance cover that can be opened and closed is provided above the fuel tank and the hydraulic oil tank, the fuel tank and the hydraulic oil tank have external fuel supply ports. As a result, there is no danger of damage to the filler opening, and the design of the bonnet in appearance is improved.

According to the third aspect, in addition to the first to fourth effects of the first aspect, the following effect is obtained. First
Since the fuel filler port of the fuel tank projects from the upper part of the bonnet covering the upper structure, and the fuel filler port is provided in the recess of the bonnet, the fuel filler port of the fuel tank is disposed so as to be exposed. Work can be done easily. Second
In addition, since the fuel filler port of the fuel tank is provided in the recess of the bonnet, the fuel filler port protruding above the bonnet does not hinder the work or the like. Therefore, there is no possibility that the filler hole is damaged by contacting other obstacles such as equipment. Third, since the fuel supply port of the fuel tank is provided in the recess of the bonnet, even if fuel leaks from the fuel supply port during refueling, the leaked fuel can be stored on the bonnet, and the fuel can be stored in another location. No fuel oil spills.

[Brief description of the drawings]

FIG. 1 is a left side view of a turning work vehicle.

FIG. 2 is a right side view of the same.

FIG. 3 is a rear view of the same.

FIG. 4 is a plan layout view in the upper structure B.

FIG. 5 is a rear sectional view of the upper structure B;

FIG. 6 is a plan view of the embodiment in which the radiator 7 is arranged on the wall of the turning frame F.

FIG. 7 is a view showing an arrangement of a counterweight W, a hanging hook 35, and a locking recess 36;

FIG. 8 is a side sectional view of the same.

FIG. 9 is a plan view of a counterweight W.

FIG. 10 is a plan view showing a state where a maintenance cover is opened.

11 is an enlarged plan view of a part including a fuel tank 37, a hydraulic oil tank 38, and a maintenance cover 34. FIG.

FIG. 12 is a side sectional view of a maintenance cover 34 and an inspection window 30;

FIG. 13 is a front cross-sectional view showing the relative positions of the fuel supply port 33, the bonnet 6, and the maintenance cover 34.

FIG. 14 is a perspective view showing a state in which a maintenance cover is opened.

FIG. 15 is a perspective view showing a state in which the maintenance cover is closed.

[Explanation of symbols]

 B Upper structure E Engine F Revolving frame P Hydraulic pump device S Seat 6 Bonnet 7 Radiator 30 Inspection window 33 Filler port 34 Maintenance cover 37 Fuel tank 38 Hydraulic oil tank

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Mineaki Ogata 1-32 Chaya-cho, Kita-ku, Osaka City, Osaka Inside Yanmar Diesel Corporation (72) Inventor Takeshi Koga 428 Enami, Okayama City (72) Inventor Toru Sakai 428 Enami, Okayama City

Claims (3)

[Claims] 1. An upper structure is formed on a traveling device such that a swing frame is swingably mounted via a swing table bearing, and the swing frame, a seat, an engine, a radiator, a hydraulic pump, a fuel tank, a hydraulic oil tank, and the like are provided. A work machine operable up and down and left and right is provided at a front end of the upper structure, and a turning work vehicle in which at least a rear largest dimension portion of the upper structure is accommodated within the width of a traveling device, an engine is turned around a turning center. A hood covering the engine and the like is fixed to a turning frame, and an inspection window is provided in a hood portion behind the upper structure. 2. An upper structure is constituted by a swivel frame mounted on a traveling device via a swivel table bearing so as to be able to swivel, and the swivel frame, a seat, an engine, a radiator, a hydraulic pump, a fuel tank, a hydraulic oil tank, and the like. A work machine operable up and down and left and right is provided at a front end of the upper structure, and at least a rear largest dimension portion of the upper structure is accommodated within a width of a traveling device. A turning work vehicle, comprising an oil tank arranged adjacent to the fuel tank and a hood above the hydraulic oil tank, and a maintenance cover that can be opened and closed provided on a bonnet. 3. A swivel frame is swingably mounted on the traveling device via a swivel table bearing, and an upper structure is constituted by the swivel frame, a seat, an engine, a radiator, a hydraulic pump, a fuel tank, and the like. At the front end of the structure, a working machine operable up and down and left and right is provided, and in a turning work vehicle in which at least the rear largest dimension portion of the upper structure is contained within the width of the traveling device, the fuel tank filler port is provided. A turning work vehicle characterized by projecting above an upper part of a hood covering an engine or the like, wherein the fuel filler port is provided in a recess of the hood.