JP2000064354A - Construction machine - Google Patents

Construction machine

Info

Publication number
JP2000064354A
JP2000064354A JP10250508A JP25050898A JP2000064354A JP 2000064354 A JP2000064354 A JP 2000064354A JP 10250508 A JP10250508 A JP 10250508A JP 25050898 A JP25050898 A JP 25050898A JP 2000064354 A JP2000064354 A JP 2000064354A
Authority
JP
Japan
Prior art keywords
columns
canopy roof
construction machine
horizontal
column
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP10250508A
Other languages
Japanese (ja)
Inventor
Shinichiro Endo
Hiroshi Iwashita
Koji Nishimura
Kazunori Yamada
一徳 山田
弘 岩下
孝治 西村
新一郎 遠藤
Original Assignee
Hitachi Constr Mach Co Ltd
Hokuetsu Kogyo Co Ltd
北越工業株式会社
日立建機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Constr Mach Co Ltd, Hokuetsu Kogyo Co Ltd, 北越工業株式会社, 日立建機株式会社 filed Critical Hitachi Constr Mach Co Ltd
Priority to JP10250508A priority Critical patent/JP2000064354A/en
Publication of JP2000064354A publication Critical patent/JP2000064354A/en
Pending legal-status Critical Current

Links

Abstract

(57) [Summary] [Problem] To increase the support rigidity of a canopy roof by left and right columns to suppress vibration of the canopy roof. SOLUTION: An L-shaped left and right column 10 is provided by a vertical column 11 and a horizontal column 12 extending forward from an upper side of the vertical column 11, and the horizontal column of each of the columns 10 is provided. 1
The canopy roof 16 is mounted on the horizontal columns 12 by attaching the canopy roof 16 to the front and rear directions over a wide range. As a result,
The rigidity of the support of the canopy roof 16 by the right supports 10, 10 is increased, and the canopy roof 1 due to the vibration of the hydraulic excavator is increased.
6 prevents fluttering vibration.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction machine such as a hydraulic excavator, and more particularly to a construction machine provided with a canopy roof covering an upper portion of a driver's seat.

[0002]

2. Description of the Related Art Generally, construction machines such as hydraulic excavators are
The construction machine main body provided with a driver's seat, the left and right pillars standing on the rear side of the driver's seat and erected on the construction machine main body, and attached to the upper side of each pillar, the driver's seat And a canopy roof extending forward so as to cover the above.

The rear end of the canopy roof is generally fixed to the left and right columns by bolts. In this fixing method using bolts, for example, a screw seat is provided near the rear side of the lower surface of the canopy roof. A bracket extending in a substantially horizontal direction is provided at the upper end of each pillar, and the canopy roof is fixed to each pillar by screwing a bolt to the screw seat of the canopy roof via the bracket.

[0004]

By the way, in the construction machine according to the above-mentioned prior art, since the rear end side of the canopy roof is only supported by the left and right columns, the main body of the construction machine at the time of traveling or working. There is a problem in that the front side of the canopy roof causes fluttering vibration due to the vibration generated in the.

Therefore, it is necessary to suppress the flapping vibration of the canopy roof by increasing the rigidity of the canopy roof itself, which causes a problem that the workability at the time of processing is lowered and the manufacturing cost is increased.

Further, for example, it is conceivable to provide an additional strut on the front side of the driver's seat, but in this case, it is necessary to newly provide a screw seat or the like near the front side of the lower surface of the canopy roof, which makes a drastic structural change. There is a problem that is.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to increase the rigidity of supporting the canopy roof by the left and right columns to suppress vibration of the canopy roof. The purpose is to provide the construction machine.

Another object of the present invention is to provide a construction machine in which a column for enhancing the support rigidity of the canopy roof can be easily added.

[0009]

A construction machine according to the present invention comprises a construction machine main body provided with a driver's seat and left and right construction machines located on the rear side of the driver's seat and erected on the construction machine main body. Each of the columns has a column and a canopy roof that is attached to the upper side of each column and extends forward so as to cover the upper side of the driver's seat.

In order to solve the above-mentioned problems,
The feature of the configuration adopted by the invention of claim 1 is that the left and right columns are formed in an L shape by extending the horizontal columns forward from the upper side of the vertical columns standing on the construction machine body, and the canopy roof is It is configured to be attached to the horizontal column of each column.

With this structure, the rigidity of the left and right columns can be increased by the vertical column and the horizontal column which are integrally formed.
It can be supported over a wide range in the rear direction, and can prevent flapping vibration of the canopy roof.

According to a second aspect of the present invention, screw seats are provided on the upper side of the horizontal columns of the left and right columns, and through holes are provided in the canopy roof at positions corresponding to the screw seats. Each through hole is provided with a bolt which is inserted from the upper side and screwed into the screw seat, and the canopy roof is fixed to the left and right columns by the respective bolts.

With this structure, the canopy roofs are placed on the left and right lateral columns, and the bolts are passed through the through holes from the upper side, and the respective bolts are screwed into the screw seats of the lateral columns. , Canopy roof can be attached to the column. In this case, since the screw seat, the bolt, and the like are arranged on the upper side of the horizontal column, the lower surface side of the canopy roof or the like that can be seen by the driver can be made into a clean shape, and the appearance can be improved.

According to the third aspect of the present invention, an annular protrusion protruding upward is provided around the through hole. The annular projection can block rainwater from flowing into the through hole.

According to a fourth aspect of the present invention, the canopy roof is provided with a rainwater guide groove which is located on the upper surface side and guides rainwater toward the rear side.

With this configuration, the rainwater on the upper surface side of the canopy roof can be made to flow along the rainwater guide groove, and the rainwater can be made to flow down near the rear side out of the driver's view, and the view during work can be improved. Can be good.

According to a fifth aspect of the present invention, the canopy roof is provided with an annular groove portion around the through hole, and the annular groove portion is communicated with the rainwater guide groove.

With this configuration, the rainwater that has flowed into the annular groove can be discharged to the rainwater guide groove side, and the rainwater can be prevented from entering the through hole. Further, since the canopy roof has a three-dimensional shape due to the annular groove portion, the strength around the through hole can be increased by the annular groove portion. Further, the annular groove allows the head of the bolt to be buried and hidden within the canopy roof.

According to a sixth aspect of the present invention, an annular protrusion is provided inside the annular groove so as to surround the through hole and protrudes upward, and a seal ring for sealing between the bolt and the upper surface of the annular protrusion is provided. There is something.

With this structure, the rainwater that has flowed into the annular groove can be blocked by the annular protrusion, and the rainwater can be prevented from entering the through hole. Moreover, the intrusion of rainwater into the through hole can be more reliably prevented by the annular projection surrounding the through hole and the seal ring between the annular projection and the bolt.

According to the invention of claim 7, between the construction machine main body and the lateral pillars of the left and right columns, additional left and right columns are provided on the front side of the driver's seat.

With this structure, the upper parts of the left and right additional columns are attached to the tips of the transverse columns extending forward, and the lower parts of the additional columns are attached to the construction machine body.
Additional columns can be provided with a simple configuration.

In the invention of claim 8, a screw seat is provided on the upper side of the horizontal pillars of the left and right columns, and the screw seats are provided at two positions spaced apart in the front and rear directions of the horizontal pillar. Screw holes are provided, and through holes are provided in the canopy roof at positions corresponding to the two screw holes, respectively, and the lower surface of the canopy roof is located between the two through holes and is located between the screw seat and the upper surface of the screw seat. The reason is that a space is provided to secure a gap.

With this structure, even when the canopy roof is attached to the left and right lateral columns, a space is secured by the space between the upper surface of the screw seat and the lower surface of the canopy roof. This gap can reduce the contact area between the support pillar and the canopy roof, and can suppress the transmission of vibration to the canopy roof.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION A construction machine according to an embodiment of the present invention will be described in detail below with reference to a hydraulic excavator as an example with reference to the accompanying drawings.

First, FIGS. 1 to 8 show a first embodiment of the present invention, in which 1 is a lower traveling body of a hydraulic excavator, 2
Is an upper revolving structure as a construction machine body rotatably mounted on the lower traveling structure 1, and the upper revolving structure 2 includes a revolving frame 3 forming a structure and a substantially central portion on the revolving frame 3. A driver's seat 4 provided, a building cover 5 provided from the right side of the driver's seat 4 to the rear side and accommodating an engine, hydraulic equipment, etc., and a counterweight 6 attached to the rear part of the revolving frame 3. A working device 7 for excavating earth and sand and the like is provided in a vertically movable manner at the center of the front part of the revolving frame.

Here, the revolving frame 3 has a rigid bottom plate 3A and a plurality of vertical plates 3B (only one is shown),
A floor plate 3D is supported above the bottom plate 3A by a plurality of support plates 3C, 3C, ... And a driver's seat 4 is mounted on the floor plate 3D.

A support frame 8 is mounted on the rear side of the revolving frame 3 so as to straddle the engine, and the support frame 8 is provided with legs 8 spaced apart in the front and rear directions.
A and 8B and a supporting pedestal 8C provided on the legs 8A and 8B, and a fixing member 9 for fixing left and right columns 10 and 10, which will be described later, is attached to the supporting pedestal 8C. ing. Here, the fixing member 9 includes the columns 10,
10 is fixedly supported and is attached to the support pedestal 8C by fastening means, welding means, or the like.

Reference numerals 10 and 10 denote left and right columns which are erected on the support frame 8. These columns 10 are spaced apart in the left and right directions as shown in FIGS. Is formed in an L-shape by the vertical columns 11 and 11 and the horizontal columns 12 and 12 extending from the upper side of each of the vertical columns 11 to the front, and the lower sides of the vertical columns 11 face each other. The fixed columns 13 and 13 are bent and extended in the left and right directions. And
Each of the columns 10 is erected on the upper swing body 2 by fixing the fixed column 13 to the fixing member 9 on the support frame 8 firmly. Each strut 10 is formed by bending a pipe material having sufficient strength, and has high rigidity and durability. Furthermore, the vertical column 11 and the horizontal column 12
A curved portion 14 is formed between the and, and the curved portion 14 is formed with a bending radius large enough to increase the runout strength of the horizontal column 12 with respect to the vertical column 11.

15 and 15 are horizontal columns 12 of the columns 10 and 10, respectively.
Each of the screw seats 15 is welded to the upper side of the horizontal column 12 in a state of extending in the front and rear directions. Here, as shown in FIGS. 7 and 8, each of the screw seats 15 is made of a thick and long plate body, and screw holes 15A, 15A are formed on both end sides thereof so as to be spaced apart in the front and rear directions. ing.

Reference numeral 16 denotes a canopy roof mounted between the left and right columns 10 and extending forward so as to cover the upper side of the driver's seat 4. The canopy roof 16 is shown in FIGS.
As shown in FIG. 6, it is formed in a substantially rectangular shape. Here, the canopy roof 16 has a hollow structure by an upper plate 17 having a bow-shaped cross section and a substantially flat lower plate 18 formed by molding a resin material.

.. are through holes (1 in FIG. 7) penetrating through the canopy roof 16 in the upward and downward directions.
Each, only two of them are shown in FIG. 8).
Two left and right two corresponding to the screw seats 15 and 15 arranged on the left and right, and two front and rear separate positions corresponding to the screw holes 15A and 15A of the screw seat 15, respectively. Has been done. A reinforcing sleeve 19A is inserted into each through hole 19 on the inner peripheral side thereof.

Reference numeral 20 denotes a rainwater guide groove formed on the upper plate 17 of the canopy roof 16. The rainwater guide groove 20 has a U-shape extending on the front side, the left side and the right side of the upper plate 17, as shown in FIG. It is formed as a groove and both ends are open toward the rear side. The rainwater guide groove 20 is provided on the canopy roof 1.
By making the rainwater on 6 flow down near the rear side outside the driver's field of view, the field of view during work is improved.

Reference numerals 21, 21, ... Are annular groove portions provided on the upper plate 17 of the canopy roof 16 and provided in the peripheral portion of each through hole 19, and each annular groove portion 21 is formed in a semicircular shape or a horseshoe shape. . The through hole 19 is formed in each annular groove 21.
An annular projecting portion 21A that surrounds the above and projects upward is formed, and the annular projecting portion 21A blocks rainwater that has flowed into the annular groove portion 21 and prevents rainwater from entering the through hole 19. . Further, each annular groove portion 21 communicates with the rainwater guide groove 20, whereby the rainwater flowing into the annular groove portion 21 can be discharged to the rainwater guide groove 20 side.

22 and 22 are lower plates 1 of the canopy roof 16.
With the left and right column housing grooves (only one shown) formed in 8,
Each of the column accommodating grooves 22 is formed as a semi-arcuate concave groove extending in the front and rear directions, and accommodates the upper half of the horizontal column 12 with a gap.

Reference numeral 23 denotes a void portion provided at the back of the column accommodating groove 22. The void portion 23 is formed by recessing upwardly between two through holes 19, 19 which are separated in the front and rear directions. Has been done. The gap 23 secures a gap 24 between the upper surface of the screw seat 15 and the contact portion between the horizontal column 12 and the canopy roof 16 around the through hole 19, for example, only within the range of the dimension S in FIG. By doing so, the transmission of vibration from the column 10 is suppressed, and the vibration of the canopy roof 16 is prevented.

Are bolts for attaching the canopy roof 16 to the left and right columns 10, 10, and each bolt 25 has a flat washer 25A and a spring washer 25B. Then, the bolts 25 are screwed into the screw holes 15A of the screw seats 15 attached to the horizontal columns 12 through the through holes 19 of the canopy roof 16, thereby fixing the canopy roofs 16 to the columns 10.

Reference numeral 26 is a seal ring provided on the upper surface of the annular projection 21A of the annular groove 21, and the seal ring 26 is O
It is made of a ring or the like and seals between the bolt 25 and the flat washer 25A to prevent rainwater from entering the through hole 19.

The hydraulic excavator according to the present embodiment has the above-mentioned structure, and its operation will be described below.

First, the driver seated in the driver's seat 4 operates the surrounding levers and pedals to move the lower traveling body 1 to move or to lower the working device 7 to raise or lower the work device 7 to excavate the earth and sand. And so on.

Further, although the hydraulic excavator vibrates during running or working, the left and right columns which are L-shaped from the vertical column 11 and the horizontal column 12 extending forward from the upper side of the vertical column 11. The canopy roof 16 is attached to the 10, 10, and the canopy roof 16 is attached to the horizontal pillar 1 over a wide range in the front and rear directions.
Since it is supported by 2, the canopy roof 16 can be prevented from fluttering vibration due to vibration of the hydraulic excavator.

As described above, according to the present embodiment, the canopy roof 16 is supported by the two columns 10 in which one pipe material is bent into an L shape to form the vertical columns 11, the horizontal columns 12, and the like. Therefore, the supporting rigidity of the canopy roof 16 by these columns 10 can be increased, the flapping vibration of the canopy roof 16 can be suppressed, and the noise during work can be reduced.
The durability of each part can be improved.

Further, a screw seat 15 is provided on the upper side of the horizontal column 12, and the canopy roof 16 is attached to each of the columns 10 from the upper side of the canopy roof 16 by bolts 25, so that the screw seat 15, the bolt 25, etc. are placed on the upper side. Since it can be arranged, the lower plate 18 side such as the canopy roof 16 which can be seen by the driver can be formed into a clean shape,
The appearance can be improved.

Further, since the canopy roof 16 has a hollow structure formed by resin molding, the weight of the canopy roof 16 can be reduced and flapping vibration can be suppressed.

At this time, since the rainwater guide groove 20 for guiding the rainwater toward the rear side is provided on the upper plate 17 of the canopy roof 16, the rainwater on the canopy roof 16 is made to flow along the rainwater guide groove 20 to drive the vehicle. Rainwater can be made to flow near the rear side, which is out of the field of view of the person, and the field of view during work can be improved and workability can be improved.

Further, each through hole 1 of the canopy roof 16
Since the annular groove 21 is provided in the peripheral portion of 9 and each annular groove 21 is communicated with the rainwater guide groove 20, the rainwater flowing into each annular groove 21 can be discharged to the rainwater guide groove 20 side, It is possible to prevent rainwater from leaking from the through hole 19.

Further, since the upper plate 17 of the canopy roof 16 can be three-dimensionally formed by the annular groove portions 21, the annular groove portion 21 can increase the strength of the periphery of the through hole 19 and the rigidity of the canopy roof 16. Can be increased. Moreover, since the head of the bolt 25 can be buried and hidden in the canopy roof 16 by the annular groove portion 21, the appearance can be improved in this respect as well.

Further, since each annular groove portion 21 is provided with an annular projection 21A which surrounds the through hole 19 and protrudes upward, the rainwater is prevented from flowing into the through hole 19 by the annular projection 21A. Therefore, it is possible to prevent rainwater from leaking from the through hole 19.

Further, since the seal ring 26 is provided on the upper surface of the annular projection 21A to seal the space between the bolt 25 and the flat washer 25A, rain leakage from the through hole 19 can be more reliably prevented. .

On the other hand, screw seats 15 are provided on the upper side of each of the horizontal columns 12, 12, and two screw holes 15A, 15A are provided on both ends of the screw seats 15 so as to be spaced apart in the front and rear directions. The canopy roof 16 is provided with through holes 19 spaced apart in the front and rear directions so as to correspond to the respective screw holes 15A, and the lower plate 18 of the canopy roof 16 is provided between two through holes 19. A space 23 is provided so as to secure a gap 24 between the upper surface and the upper surface of the screw seat 15.
As a result, due to these voids 23, the contact portion between the horizontal column 12 and the canopy roof 16 is surrounded by the dimension S around the through hole 19.
Since it can be limited to the range of, it is possible to suppress the transmission of vibration during traveling or work to the canopy roof 16,
It is possible to prevent damage and noise due to vibration of the canopy roof 16.

Next, FIGS. 9 to 11 show a second embodiment of the present invention. The feature of the present embodiment is that the construction machine main body and the horizontal pillars of the left and right columns are provided. It is configured to have additional left and right columns located in front of the driver's seat. In addition, in the present embodiment, the same components as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

Reference numerals 31 and 31 denote left and right additional support columns which are arranged on the front side of the driver's seat 4 so as to be spaced apart from each other on the left and right sides.
1 is formed in an L-shape by a vertical column 32 standing upright on the revolving frame 3 and a horizontal column 33 extending from the upper side of the vertical column 32 to the rear side. Further, brackets 32A are provided at the lower ends of the vertical columns 32, respectively, as shown in FIG.

These additional columns 31 are used for the vertical columns 3
The lower end side of 2 is the revolving frame 3 via the bracket 32A.
It is being fixed to the floor plate 3D by bolts 34. Also,
As shown in FIG. 11, the tip of the horizontal column 33 is integrally fixed to the tip of the horizontal column 12 of the column 10 by a welded portion 35.

Thus, in this embodiment having the above-described structure, it is possible to obtain substantially the same operational effects as those of the first embodiment described above. In particular, in the present embodiment, the swivel frame 3 is used. Since the additional columns 31 are provided between the horizontal columns 12 of the left and right columns 10, respectively, the supporting rigidity of the canopy roof 16 can be further enhanced, and the vibration of the canopy roof 16 can be suppressed more reliably. can do. Moreover, the additional column 31 can be attached by simply bolting the lower end of the vertical column 32 to the floor plate 3D and welding the tip of the horizontal column 33 to the tip of the horizontal column 12 of the column 10. The additional support columns 31 can be easily provided without changing the structure of the canopy roof 16 or the like.

In the second embodiment, the case where the distal ends of the lateral columns 33 of the left and right additional columns 31 are integrally fixed to the distal ends of the lateral columns 12 of the column 10 by the welded portions 35 is taken as an example. However, the present invention is not limited to this. For example, as in the first modification shown in FIG.
It is also possible to have a structure in which the end portion of the horizontal pillar 33 'of 1'is fixed to the front end portion of the horizontal pillar 12' of the support column 10 'with bolts 42, 42, ... Through a connecting plate 41. In this case, the additional support 3
1'can be easily attached and detached.

Further, as in the second modification shown in FIG. 13, a step portion 51 is provided at the end of the horizontal column 33 "of the additional support column 31", and the step portion 51 is provided at the end of the horizontal column 12 "of the support column 10". A stepped portion 52 that fits is provided, and both are bolts / nuts 53, 5
It may be configured to be connected by 3.

Further, in each of the embodiments, a hydraulic excavator was described as an example of the construction machine, but the present invention is not limited to this, and can be applied to other construction machines such as a wheel loader and a bulldozer. it can.

[0058]

As described in detail above, according to the invention of claim 1, the left and right columns are L-shaped by extending the horizontal columns forward from the upper side of the vertical columns standing on the construction machine body. Since the canopy roof is attached to the horizontal pillar of each pillar, the rigidity of each pillar can be increased by the vertical pillar and the horizontal pillar forming an integral structure. It can be widely supported in any direction. As a result, the support rigidity of the canopy roof can be increased to suppress flapping vibration of the canopy roof, noise during work can be reduced, and durability of each part can be improved.

According to the second aspect of the invention, the left and right columns are provided with screw seats on the upper side of the horizontal posts, and the canopy roof is provided with through holes at positions corresponding to the respective screw seats. , A bolt that is inserted into the through hole from above and screwed into the screw seat is provided, and the canopy roof is left by the bolt,
Since it is configured to be fixed to the right column, screw seats, bolts, etc. can be placed on the upper side of the horizontal column, and the lower surface side of the canopy roof etc. that is in the driver's view can be made into a clean shape and looks good. can do.

According to the third aspect of the present invention, since the annular projection protruding upward is provided around the through hole, it is possible to prevent rainwater from flowing into the through hole by the annular projection. It is possible to prevent leakage of rainwater from the holes.

According to the fourth aspect of the present invention, the canopy roof is provided with the rainwater guide groove which is located on the upper surface side and guides the rainwater toward the rear side. Therefore, the rainwater on the upper surface side of the canopy roof is used as the rainwater guide groove. The rainwater can be made to flow along and the rainwater can be made to flow down near the rear side which is out of the driver's field of view, and the field of view at the time of work can be improved to improve workability.

According to the fifth aspect of the invention, since the canopy roof is provided with the annular groove portion around the through hole and the annular groove portion is communicated with the rainwater guiding groove, the rainwater flowing into the annular groove portion is rainwater. It can be discharged to the guide groove side,
It is possible to prevent rainwater from entering the through holes. Also,
Because the canopy roof becomes three-dimensional by the annular groove,
The annular groove portion can increase the strength around the through hole, and the rigidity of the canopy roof can be increased. Further, the head portion of the bolt can be buried and hidden in the canopy roof by the annular groove portion, and the appearance can be improved.

According to the sixth aspect of the present invention, an annular protrusion is provided inside the annular groove so as to surround the through hole and protrude upward, and the upper surface of the annular protrusion seals with the bolt. By providing the above, it is possible to prevent rainwater that has flowed into the annular groove portion from being blocked by the annular protrusion and prevent rainwater from entering the through hole. Moreover, the intrusion of rainwater into the through hole can be more reliably prevented by the annular projection surrounding the through hole and the seal ring between the annular projection and the bolt, and reliability can be improved.

According to the invention of claim 7, between the construction machine main body and the lateral columns of the left and right columns, additional left and right columns are provided in front of the driver's seat. Attach the upper part of these additional columns to the end of each horizontal column that extends forward,
By attaching the lower part of each additional support to the construction machine body, the additional support can be provided with a simple configuration. Thereby, the support rigidity with respect to the canopy roof can be further enhanced, and the vibration of the canopy roof can be suppressed. Moreover, the additional columns can be easily provided without changing the structures of the columns and the canopy roof.

According to the invention of claim 8, a screw seat is provided on the upper side of the lateral columns of the left and right columns, and the screw seats are spaced apart in the front and rear directions of the lateral column. A screw hole is provided at each position, a through hole is provided at each of the positions corresponding to the two screw holes on the canopy roof, and the lower surface of the canopy roof is located between the two through holes and the upper surface of the screw seat. Since there is a space that secures a gap between them, even when the canopy roof is attached to the left and right horizontal columns, it is located between the front and rear screw holes and the upper surface of the screw seat and the lower surface of the canopy roof are located. It is possible to form a space between the canopies and reduce the contact area between the column and the canopy roof to suppress the transmission of vibration to the canopy roof.

[Brief description of drawings]

FIG. 1 is a front view showing a hydraulic excavator according to a first embodiment of the present invention.

FIG. 2 is an enlarged front view showing an upper revolving structure with a building cover, an engine and the like omitted.

FIG. 3 is an external perspective view showing the left and right columns and the canopy roof from the rear side.

FIG. 4 is a front view showing a canopy roof together with a part of a column.

5 is a plan view of FIG. 4 showing the canopy roof with posts.

FIG. 6 is a view showing the canopy roof together with a part of the column;
On the right side.

FIG. 7 is an enlarged cross-sectional view of a main part of a connection state of a horizontal column and a canopy roof viewed from the direction of arrow VII-VII in FIG.

8 is an enlarged cross-sectional view of a main part of a connection state between a horizontal column and a canopy roof viewed from the direction of arrows VIII-VIII in FIG.

FIG. 9 is a front view of the upper swing body of the second embodiment of the present invention viewed from the same position as in FIG.

FIG. 10 is an external perspective view showing the left and right columns, the canopy roof, and the left and right additional columns from the front side.

FIG. 11 is an enlarged view of a main part showing a connection state between additional columns and columns.

FIG. 12 is an enlarged view of an essential part showing a first modified example of a connection state between additional columns and columns.

FIG. 13 is a partially cutaway enlarged view showing a second modified example of a connection state between additional columns and columns.

[Explanation of symbols]

2 Upper swing body (main body of construction machine) 3 swivel frames 4 driver's seat 8 support frame 10, 10 ', 10 "stanchions 11,32 vertical columns 12,12 ', 12 ", 33,33'33" Horizontal column 15 screw seat 15A screw hole 16 canopy roof 17 Upper plate 18 Lower plate 19 through holes 20 Rainwater guide groove 21 annular groove 21A annular protrusion 23 Void 24 gaps 25 volts 26 Seal ring 31, 31 ', 31 "additional support

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Koji Nishimura             Hitachi Construction Machinery Co., Ltd.             Ceremony Company Tsuchiura Factory (72) Inventor Hiroshi Iwashita             1828 Shinji, Chiyoda-cho, Shinji-gun, Ibaraki (72) Inventor Shinichiro Endo             1828 Shinji, Chiyoda-cho, Shinji-gun, Ibaraki F-term (reference) 2D015 EA05                 3D003 AA00 AA01 AA06 AA07 AA09                       AA17 BB14 CA18 CA38 CA48                       DA30

Claims (8)

[Claims]
1. A construction machine main body provided with a driver's seat, left and right columns standing on the rear side of the driver's seat and erected on the construction machine main body, and attached to the upper side of each column. And a canopy roof extending forward so as to cover the upper side of the driver's seat, the left and right columns are a horizontal column forward from an upper side of a vertical column standing on the construction machine body. A construction machine, wherein the canopy roof is attached to a horizontal pillar of each of the columns, by forming an L shape by extending the canopy.
2. The left and right columns of the horizontal columns are provided with screw seats on the upper side, and the canopy roof is provided with through holes at positions corresponding to the respective screw seats. 2. The construction machine according to claim 1, wherein the canopy roof is configured to be fixed to the left and right columns by means of bolts that are inserted from above and screwed to the screw seat.
3. The construction machine according to claim 2, wherein an annular projection protruding upward is provided around the through hole.
4. The construction machine according to claim 1, wherein the canopy roof is provided with a rainwater guide groove which is located on the upper surface side and guides rainwater toward the rear side.
5. The construction machine according to claim 4, wherein the canopy roof is provided with an annular groove portion around the through hole, and the annular groove portion communicates with the rainwater guide groove.
6. An annular protrusion is provided inside the annular groove so as to surround the through hole and protrudes upward, and a seal ring for sealing between the annular protrusion and the bolt is provided on an upper surface of the annular protrusion. The construction machine according to claim 5.
7. A structure in which additional left and right columns are provided on the front side of the driver's seat between the construction machine body and the horizontal columns of the left and right columns. , 4, 5 or 6 construction machine.
8. The left and right stanchions are provided with screw seats on the upper side of the horizontal posts, and the screw seats are provided with screw holes at two positions spaced apart in the front and rear directions of the horizontal posts. The canopy roof is provided with through-holes at positions corresponding to the two screw holes, and the lower surface of the canopy roof is located between the two through-holes and has a gap between the canopy roof and the upper surface of the screw seat. The construction machine according to claim 1, further comprising a space portion that secures the space.
JP10250508A 1998-08-20 1998-08-20 Construction machine Pending JP2000064354A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10250508A JP2000064354A (en) 1998-08-20 1998-08-20 Construction machine

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004076264A1 (en) * 2003-02-27 2004-09-10 Komatsu Ltd. Rops canopy of hydraulic shovel
FR2859442A1 (en) * 2003-09-09 2005-03-11 Peugeot Citroen Automobiles Sa Motor vehicle structure has floor and roof panels separated from frame by shock absorbers to prevent transmission of vibrations
KR100629821B1 (en) 2004-12-01 2006-09-29 히다찌 겐끼 가부시키가이샤 Construction machine
JP2015177757A (en) * 2014-03-19 2015-10-08 株式会社クボタ Paddy field implement
JP2016084614A (en) * 2014-10-24 2016-05-19 日立建機株式会社 Construction machine
JP2017115357A (en) * 2015-12-22 2017-06-29 株式会社クボタ Canopy and implement comprising canopy

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004076264A1 (en) * 2003-02-27 2004-09-10 Komatsu Ltd. Rops canopy of hydraulic shovel
JP4820646B2 (en) * 2003-02-27 2011-11-24 株式会社小松製作所 ROPS canopy of hydraulic excavator
JPWO2004076264A1 (en) * 2003-02-27 2006-06-01 株式会社小松製作所 Hydraulic excavator ROPS canopy
US7213871B2 (en) 2003-02-27 2007-05-08 Komatsu Ltd. ROPS canopy of hydraulic shovel
CN100439180C (en) * 2003-02-27 2008-12-03 株式会社小松制作所 ROPS canopy of hydraulic shovel
EP1514767A1 (en) * 2003-09-09 2005-03-16 Peugeot Citroen Automobiles SA Vehicle body structure
FR2859442A1 (en) * 2003-09-09 2005-03-11 Peugeot Citroen Automobiles Sa Motor vehicle structure has floor and roof panels separated from frame by shock absorbers to prevent transmission of vibrations
KR100629821B1 (en) 2004-12-01 2006-09-29 히다찌 겐끼 가부시키가이샤 Construction machine
JP2015177757A (en) * 2014-03-19 2015-10-08 株式会社クボタ Paddy field implement
JP2016084614A (en) * 2014-10-24 2016-05-19 日立建機株式会社 Construction machine
JP2017115357A (en) * 2015-12-22 2017-06-29 株式会社クボタ Canopy and implement comprising canopy

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