JP2001159154A - Backhoe temperature control device arrangement structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lessen the forward and rearward occupying area of a temperature adjustment device as much as possible and reduce a distance from a driving seat to the rear part of a revolving base. SOLUTION: An excavating device 3 is arranged in front of a revolving base 2 and an engine 4 is arranged at the rear side of the revolving base respectively. The revolving center S is positioned in the front and rear direction on the revolving base 2 and a driving seat 6 and a temperature adjustment device 7 below the driving seat are arranged in the vicinity of the revolving center S in the right and left and the longitudinal side of the temperature adjustment device 7 is turned substantially laterally.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backhoe temperature control device arrangement structure.

[0002]

2. Description of the Related Art A temperature control device for a backhoe, for example, a heat device is designed to blow air to a driver through a fan air through a heat exchanger through which hot water from a radiator passes.
It is arranged near the driver's seat so that hot air can be effectively supplied to the driver. For example, JP-A-9-273177
In the official gazette, a heating means is arranged on the right outside of the support base supporting the driver's seat, the heating means is a substantially rectangular body, the longitudinal side of which is longitudinal, and the maximum area surface thereof is It is facing left and right.

[0003] By the way, in small and medium-sized backhoes,
It is required to make the structure on the turntable as compact as possible to facilitate turning and reduce costs.The distance from the driver's seat to the front control device is minimized, and turning from the driver's seat is required. It is necessary to keep the distance to the rear of the platform as short as possible, in which case the driver's seat will be in a position that overlaps with the center of rotation in the front-rear direction, and the seat or backrest will be the engine or engine at the rear of the platform. The position overlaps with the radiator and the like.

[0004]

However, as in the prior art, when the substantially rectangular heating means is arranged with its longitudinal side facing forward and backward, the arrangement of the engine and the like is restricted by the arrangement of the heating means. That is, it is difficult to bring the front wall covering the front side of the engine room close to the turning center, and it is difficult to arrange the engine at the front position as much as possible. It is difficult to shorten the distance to the rear of the platform. SUMMARY OF THE INVENTION An object of the present invention is to provide a temperature control device arrangement structure of a backhoe which can solve such problems of the related art.

According to the present invention, an area occupied in the front-rear direction of the temperature control device is made as small as possible by disposing the temperature control device below the driver's seat with the longitudinal side thereof substantially left and right. It is an object of the present invention to provide a backhoe temperature control device arrangement structure capable of shortening a distance to a rear portion of a swivel base.

[0006]

A first concrete means for solving the problem in the present invention is to arrange a drilling rig 3 at the front of a swivel 2 and an engine 4 at a rear, respectively. A driver's seat 6 and a temperature controller 7 below the driver's seat 6 are disposed near the center of rotation S in the front-rear direction and overlap the center of rotation S in the front-rear direction. It is to turn to. As a result, the area occupied by the temperature control device 7 in the front-rear direction is reduced, and the engine 4 and the like are arranged as frontally as possible, so that the distance from the driver's seat 6 to the rear of the swivel 2 can be reduced. .

A second concrete means for solving the problem in the present invention is to dispose an excavator 3 at the front of the swivel 2 and an engine 4 at the rear, and on the swivel 2 in the front-rear direction. A support table 8 is disposed near the rotation center S in the left and right direction and overlaps with the rotation center S, a driver's seat 6 is disposed on the support table 8, and a temperature control device 7 is disposed below the inside of the driver's seat 6. This means that the longitudinal side of the temperature control device 7 is directed substantially left and right. As a result, the temperature control device 7 can be accommodated in the support base 8 of the driver's seat 6 and the engine 4 and the like can be arranged as front as possible to shorten the distance from the driver's seat 6 to the rear of the swivel 2. become.

A third specific means for solving the problem in the present invention is that, in addition to the second specific means, the temperature control device 7 is a substantially rectangular body and its maximum area surface is vertically oriented. That is, a tool holder 9 is provided above the temperature adjusting device 7 inside the support base 8. As a result, the temperature adjustment device 7 is arranged low, and the upper part of the support 8 can be effectively used as the tool holder 9. A fourth specific means for solving the problem in the present invention is, in addition to the second or third specific means, an opening / closing lid 11 having the support base 8 formed in a box shape and having a ventilation hole 10 on the front surface thereof. And a wind diverting member for deflecting the air blown out from the temperature control device 7 forward and discharging it from the ventilation hole 10 of the opening / closing lid 11 is provided.

Thus, even if the air outlet of the temperature control device 7 is not directed forward, the air is diverted forward and the open / close lid 1 is opened.
It becomes possible to discharge from one ventilation hole 10. A fifth specific means for solving the problem in the present invention is the second specific means.
In addition to any of the specific means of (1) to (4), at least one of the left and right control devices 12 and 13 is supported on the left and right sides of the support base 8. As a result, the left and right control devices 12 and 13 can be firmly supported in the vicinity of the driver's seat 6.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 3, 6 and 7, the backhoe 1 shown as a small rear swing type has a swivel 2 pivotally mounted on a body 18 having a pair of right and left crawler traveling devices 17, and a dozer 19 at a front portion of the body 18. Equipped, the swivel 2
Is equipped with a drilling rig 3 in the front, and an engine 4 in the rear,
A weight 5 and the like are arranged, a driver's seat 6 is placed at the center, and a cabin device 20 is provided so as to cover the driver's seat 6.

In the excavator 3, the swing bracket 22 is supported by a support portion 2A at the front of the swivel base 2 via a longitudinal axis, and is swingable by a swing cylinder 21.
The arm cylinder 2 is pivotally supported by the boom 23 and the boom cylinder 24, and the arm 25 is pivotally supported by the tip of the boom 23.
6, a bucket 28 that is scooped and dumped by a bucket cylinder 27 is pivotally supported at the tip of the arm 25. On the swivel 2, an engine 4, a radiator 32, a hydraulic pump and the like are arranged at a rear portion, and a left cover 33 is provided.
And a fuel tank, a hydraulic oil tank, a battery, a control valve, and the like are disposed on the right side, and are covered with a tank cover 35,
A weight 5 is attached to the last part of the.

The cabin device 20 is provided with a ceiling member 38 on a cabin frame 37 fixed on the swivel 2, a door 39 openable and closable about a vertical axis at the left front, a windshield 40 at the front, and a right side at the right. A right side glass, a left side glass 41 at a rear left portion, and a rear glass 42 at a rear portion, a ceiling window 43 on a ceiling member 38, and an air conditioner device are provided therein. The cabin device 20 includes a swivel 2 defined by a bonnet 34 and a tank cover 35.
Surrounding the upper space on the front and left sides from the center of the upper surface, the driver's seating space for the driver sitting in the driver's seat 6 is required and minimized. The distance from the turning center S of the swivel base 2 to the engine 4 and the radiator 32 and the like is shortened, whereby the distance from the turning center S of the swivel base 2 to the rear weight 5 and the bonnet 34 is reduced. Is reduced, a recess 44 is formed in the rear lower portion of the cabin device 20 to enable the bonnet 34 to be opened upward.

1 to 5, in the cabin device 20, a floor sheet is provided on the upper surface of the swivel 2 and a control rod 45 and control pedals are disposed at a front portion.
The left steering device 12 is on the left side, and the right steering device 13 is on the right side.
The driver's seat 6 is mounted on a support base 8 fixed to the swivel base 2 with bolts.
The support base 8 has a pair of left and right side plates 52 bolted to a base plate 51 which is bolted to the swivel base 2, and has a substantially U-shaped cross section in which a tool holder 9 is formed midway in the vertical direction of the left and right side plates 52. The left and right side plates 52 are fixed by bolts
The connecting plate 54 is fixed by bolts from the upper part to the rear part of the receiving member 53.

A large space is formed below the receiving member 53, and a temperature adjusting device 7 such as a heater device is arranged. The temperature adjusting device 7 is suspended from above by a first suspending member 55 and a pair of second suspending members 56 attached to the lower surface of the receiving member 53, and the lower surface of the temperature adjusting device 7 does not contact the base plate 51. It is in a state. The first and second
The hanging members 55 and 56 are formed by bending a sheet metal into a Z shape, and the first hanging members 55 and the second hanging members 56 are arranged so that the bending directions are different by 90 degrees.

With such a mounting structure, the temperature control device 7 is designed so that vibrations from the swivel base 2 are not easily transmitted, and disconnection of the pipes is reduced. Temperature control device 7
Has a heat exchanger, a fan, a fan drive motor, etc. inside, is a substantially rectangular parallelepiped similar to the front rear circle shape, the largest area surface is oriented vertically, and the longitudinal side is oriented horizontally. Therefore, the temperature adjustment device 7 is arranged in a long position in the left and right direction, short in the front and rear direction, and shortest in the vertical direction. The temperature control device 7 has an air inlet on the lower surface side so that air can be introduced from a hole (not shown) formed in the lower base plate 51 or the surroundings, and has a discharge port at a longitudinal end. Then, hot air (temperature-adjusted air) is discharged to the longitudinal side (left-right direction). A pipe connecting portion 57 is also provided at the longitudinal end, and two hoses (tubes) for supplying and returning the radiator 32 and the hot water are provided.
58 are connected.

A wind diverter 14 is attached to the longitudinal end of the temperature controller 7 so as to cover the discharge port. The wind diverter 14 has an inclined surface 14A and a front opening 14B intersecting with the left and right directions, and is configured to deflect the wind discharged from the discharge port in the longitudinal direction (left direction) of the temperature control device 7 forward. Can be. The wind diverter 14 may be attached to the side plate 3. The lower part of the left and right plates 52 (or the upper surface of the base plate 51)
A pair of left and right pivotal supports 60 formed of L-shaped bars are provided, and a cylindrical portion 61 at the lower portion of the opening / closing lid 11 is fitted to the pivotal supports 60 from one of the left and right sides to be pivotally supported.

The opening / closing lid 11 opens and closes the front surface of the support base 8, and is formed with a ventilation hole 10 for discharging the discharge air from the temperature control device 7 to the front side (under the driver's feet) more widely. A ventilation hole 10 for introducing air into the temperature control device 7 is also formed. A sealing member 62 is provided on the inner surface of the opening / closing lid 11 so as to surround the ventilation hole 10 for discharging hot air. When the opening / closing lid 11 is closed, the sealing member 62 is provided. Front opening 14B
And the front of the temperature control device 7, and the wind diverter 1
The hot air discharged from 4 is not directly sucked into the temperature control device 7.

Reference numeral 63 denotes a locking device for the opening / closing lid 11.
When the cover 1 is closed, the cover 11 rotates and engages with the connecting plate 54 to maintain the closed state of the opening / closing lid 11. A pivot shaft 65 is provided on the front side of the connection plate 54 via a bracket. The front lower portion of the seat 6A of the driver's seat 6 is pivotally supported by the pivot shaft 65. In the driver's seat 6, the seat 6A is held on the connecting plate 54, so that the support 8 is
Also serves as a support. The driver's seat 6 has a backrest portion 6B that rises rearward and upward from the seat portion 6A, and the backrest portion 6B
Overlaps the engine 4 and the radiator 32 in the front-rear direction.

The front side of an engine room 66 in which the engine 4 and the radiator 32 and the like are arranged is defined by a front wall 67 so that hot air that has cooled the engine 4 and the radiator 32 does not flow directly to the driver. I have to. The engine room 66 is designed to have a minimum volume by arranging the engine 4, the radiator 32, and other vehicle auxiliary equipment, and furthermore, is arranged as frontally as possible. The lower part is located directly below the seat 6A,
It is close to the temperature control device 7 and the support 8.

The minimum space required for steering and getting on and off is from the control stick 45 to the upper rear end of the backrest 6B in the front-rear direction. In that case, the center is substantially the front end of the seat 6A, and the center is operated from the front end of the seat 6A. The distance to the front of the swivel 2 necessary for the arrangement of the rod 45 is defined as the minimum radius, and the swivel 2 is set at the minimum radius.
When the rear part is formed, the swivel 2 is the most compact. Thus, it is extremely difficult to configure the front end of the seat 6A so as to be right beside the turning center S of the swivel 2 due to the size and arrangement of the engine 4, the temperature control device 7, and the like. Although the front end of 6A must be on the front side of the turning center S, the swivel base 2 can be made as compact as possible by bringing the front end of the seat 6A as close as possible to the turning center S.

That is, the seat 6 of the driver's seat 6 in the front-back direction
A is arranged right beside the center of rotation S so as to overlap with the center of rotation S, the front-rear dimension of the support base 8 supporting the driver's seat 6 is shortened, and the temperature adjustment device 7 arranged inside the base is extended in the longitudinal direction. The side is shortened in the front-rear direction in the left-right direction, whereby the front wall 67 is arranged as close to the front as possible to approach the turning center S, and the engine room 66 can be formed forward, so that the engine room 66 can be formed forward. The distance to the rear end of the swivel 2 is made as short as possible. The driver's seat 6 is
The support 8 overlaps with the center of rotation S even though it is arranged close to the left side of the center of rotation S but overlaps.

Left and right control devices 12 and 13 for controlling the excavator 3 are disposed on the left and right sides of the driver's seat 6, and the left control device 12 is turned upward and retracted when the driver gets on and off the vehicle. Can be kept. The support table 8 is provided with 2 in FIG.
As shown by the dashed line, a pivot mounting portion 69 for mounting the left control device 12 so as to be pivotally supported and a mounting portion 70 for mounting the right control device 13 are provided. The support and structure are simplified. The temperature controller 7 is disposed on the swivel 2 by attaching the support 8 to the swivel 2 in a state in which the temperature adjuster 7 is incorporated in the support 8 in advance. 12, 13
Any or all of them can be assembled and attached to the swivel 2.

The present invention is not limited to the above embodiment, but can be variously modified. For example,
The present invention can be applied not only to a small back turning type backhoe but also to a backhoe called an ultra-small turning type or a standard type. Temperature control device 7
May be a cooler device. Instead of providing the support base 8, a bracket may be projected forward from the front wall 67 to support the driver's seat 6, and the temperature controller 7 may be disposed below the driver's seat 6.

Further, the support base 8 omits the tool holder 9, arranges the temperature control device 7 so that the longitudinal side faces left and right and the maximum area surface is front and rear, and further arranges the front wall 67 further forward. The temperature control device 7 may be mounted on the base plate 51 side.

[0025]

According to the present invention described in detail above, the driver's seat 6 and the temperature control device 7 below the driver's seat 6 are arranged near the turning center S in the front-rear direction and near the turning center S in the left-right direction. Since the longitudinal side of the temperature control device 7 is directed substantially right and left, the area occupied by the temperature control device 7 in the front-rear direction is reduced, and the engine 4 and the like can be arranged as forward as possible. The distance to the rear of the platform 2 can be shortened, and the rear of the swivel 2 can be made compact.

Further, a support table 8 is disposed near the turning center S in the front-rear direction and near the turning center S in the left-right direction. Since the temperature control device 7 is disposed and the longitudinal side of the temperature control device 7 is directed substantially right and left, the temperature control device 7 is housed in the support base 8 of the driver's seat 6 and the engine 4
And the like can be arranged on the front side as much as possible, the distance from the driver's seat 6 to the rear part of the swivel base 2 can be shortened, and the rear part of the swivel base 2 can be made compact.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view of a main part showing an embodiment of the present invention.

FIG. 2 is a perspective view showing the inside of a support base with an opening / closing lid opened.

FIG. 3 is a plan view showing an upper structure of the swivel base.

FIG. 4 is a front view of a temperature adjusting device and a support base.

FIG. 5 is a partial cross-sectional plan view of a temperature adjustment device and a support base.

FIG. 6 is a side view of the entire backhoe.

FIG. 7 is a plan view of the entire backhoe.

[Explanation of symbols]

 2 Turntable 3 Excavator 4 Engine 5 Weight 6 Driver's seat 7 Temperature controller 8 Supporting stand 9 Tool holder 10 Vent hole 11 Opening / closing lid 12 Left steering device 13 Right steering device

 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Masaaki Ueda 64 Ishizukita-cho, Sakai-shi, Osaka F-term in Kubota Sakai Works Co., Ltd. (Reference) 2D015 EC01

Claims (5)

[Claims] An excavator is disposed at a front portion of a turntable and an engine is disposed at a rear portion of the turntable. An operator's seat is disposed on the turntable so as to overlap the turning center in the front-rear direction and near the turning center in the left-right direction. A temperature control device arrangement structure for a backhoe, wherein a temperature control device below the temperature control device is disposed, and a longitudinal side of the temperature control device is directed substantially right and left. 2. An excavator is disposed at a front portion of the swivel base, and an engine is disposed at a rear portion of the swivel base. A support base is disposed on the swivel base so as to overlap with the turning center in the front-rear direction and near the turning center in the left-right direction. A temperature control device for a backhoe, wherein a driver's seat is disposed on the support base, a temperature control device is disposed below the inside of the support seat, and a longitudinal side of the temperature control device is directed substantially right and left. Arrangement structure. 3. The temperature control device according to claim 1, wherein the temperature control device is a substantially rectangular parallelepiped, the maximum area surface of which is vertically oriented, and a tool holder is provided above the temperature control device inside the support base. The arrangement structure of a temperature control device for a backhoe according to claim 2, characterized in that: 4. The support base is formed in a box shape, and is closed by an opening / closing lid having a ventilation hole on the front surface thereof, and the air blown out from the temperature control device is turned forward to pass through the ventilation hole of the opening / closing lid. 4. The arrangement structure of a temperature control device for a backhoe according to claim 2, further comprising a wind diverter for discharging. 5. The arrangement structure for a temperature control device for a backhoe according to claim 2, wherein at least one of the left and right steering devices is supported on the left and right sides of the support base.