JP2001207479A - Cab for construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cab for a construction machine of the post-assembling of parts such as a seal flange and a slide rail of the cab for the construction machine and lessening the number of the parts. SOLUTION: A framework 31 is formed of side frames 37, 37' comprising front posts 32, 32', roof sides 33, 33' and upward joints 35, 35', 36, 36' connecting them, cross members 38, 39 connected among the upward joints 35, 35', 36, 36' and members 42, 42', 43, 43' connected between the lower ends of the side frames 37, 37'. In the cab for the construction machine provided with a front window FW and a door D, the front posts 32, 32' and the roof sides 33, 33' are formed by steel pipe drawing processing, and front window rail parts 44, 44', 46, 46' guiding the roller R1 of the front window FW are integrally formed by the drawing processing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cab for a construction machine (hereinafter referred to as a construction machine cab), and more particularly to a construction machine cab using a deformed steel pipe to form a frame.

[0002]

2. Description of the Related Art As shown in FIG. 40, in a frame of a construction machine cab having the above-mentioned frame, a deformed pipe made of a long steel plate having a relatively simple cross section is provided at predetermined positions (circles a, b and d in FIG. 40). And the left and right side frames 1 and 1 'are bent at the lower end into vertical and horizontal connecting members 2 having a rectangular cross section.
The frame 4 is formed by connecting the frames 4 by welding or the like by 2 ', 3 and 3', or as shown in Fig. 41, the short pipes 5, 5 ', 6, and 6' made of a short steel plate having a relatively simple section , 7, 7 '
Are required to bend (a, b, and d shown by circles in FIG. 41).
In order to connect the adjacent pipes in the above, steel plate joints 8, 8 ', 9, 9' having a configuration as shown in FIGS.
To form side frames 10 and 10 '.

The steel plate joints 8, 8 ', 9, 9'
Consists of a steel plate joint member 8'a, 8'b which has a required bending radius and can be divided vertically, and an upper connecting member connecting bracket 8'c. The steel plate joint members 8'a and 8'b are combined and temporarily fixed with the pipes 5 'and 6' interposed therebetween, and the connecting member connecting fitting 8'c is attached to the joint member 8'b. At the lower end, the vertical and horizontal connecting members 2, 2 ', 3 and 3' having a rectangular cross section are welded in a fixed state as described above.
To form the frame 11 by welding or the like.

Although not shown in FIGS. 40 and 41,
Above the side frames 1, 1 'and 10, 10', the upper cross member 12, the rear side surface, and the rear surface are integrally formed as shown in FIG. 49 by using, for example, the connection member connecting fitting 8'c. Are connected by the outer shell member 13.

[0005] The frame of a conventional construction machine cab uses a steel pipe with a relatively simple cross section, as shown in FIG.
In the side frames 1 and 1 'of the skeleton 4, one long pipe is formed by bending a large portion at a predetermined position, which is preferable in terms of strength but restricts the design of the cab.

In addition, in the conventional steel pipe having a deformed shape, in consideration of the bending, it is inevitable to have a relatively simple cross section as shown in FIGS. 44 to 46 and 50. Therefore, as shown in FIG. In order to slide the front window representatively showing only the flange 14, the slide rail 15 is prepared as a separate member, which is sandwiched between the holding brackets 16, and a small screw (not shown) inserted into the hole 15 a is used. , It is necessary to screw it to the screw hole 1a and fix it to the side frame 1, and fix the other parts by welding.

In addition, in the conventional deformed pipe, even when the joints 8, 8 ', 9, 9' are used at the required bending positions as shown in FIG. 41, the pipe has a relatively simple cross-sectional shape. Separate components such as the seal flange 14 and the slide rail 15 were required.

Further, as shown in FIG.
It is necessary to perform welding 19 and 20 on the grip 7 and the getting on / off grip 18 as they are or after opening the hole lb.

In FIG. 40 and FIG. 41, as shown in detail in FIG. 46, the lower end of the side frame 1 and the vertical and horizontal connecting members 2 and 3 must be connected by welding 21. However, at this time, the reinforcing member 22 was applied to the corner where the vertical connecting member 2 and the horizontal connecting member 3 abut against each other and welded.

Therefore, in a conventional construction machine cab having a skeleton, (1) the design of the cab is restricted if it is a single component that does not use a joint as in the side frames 1 and 1 ′ of FIG. 2) In the case of connecting the pipes with the steel plate joint, when the pipe to be connected is changed, it takes a long time to prepare a mold for newly forming the joint, and the manufacturing cost is high. 3) The appearance is deteriorated by welding, small screws, and the like. (4) The number of parts is increased due to the increase in the number of retrofitted parts. is there.

Regarding the above (4), for example, in the part d shown by a circle in FIG. 40, as shown in FIGS. 47 and 48, in addition to the side frame 1, the roof panel 23 and the window glass 24, The slide rail 15 for sliding the front window and the flange 25 for attaching the window glass 24 must be prepared as separate members and attached to the side frames 1 and 1 'as shown in FIGS.

[0012]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a construction machine cab having a framework for connecting pipes with joints, in which the cab can be freely designed and parts such as a seal flange and a slide rail are provided. It is an object of the present invention to provide a good-looking construction machine cab capable of minimizing retrofitting and further reducing the number of parts.

[0013]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a first aspect of the present invention provides a side frame including a front post, a roof side, a rear post, and an upper joint connecting these at a bent portion, and an upper joint. A front window positioned between the side frames, an upper cross member connecting the spaces therebetween, and vertical and horizontal connecting members connecting the lower ends of the side frames via lower joints; A cab for a construction machine, wherein the front post and the roof side are formed by drawing a relatively thick steel pipe, and the front window and the roof side are formed on the front post and the roof side. This is a cab for construction machinery in which a front window rail for guiding the rollers is integrally formed by a drawing process.

According to a second aspect of the present invention, there is provided a side frame including a front post, a roof side, a rear post, and an upper joint connecting these at a bent portion, an upper cross member for connecting the upper joints to each other, In a cab for a construction machine having a frame formed by vertical and horizontal connecting members connecting lower ends via a lower joint, a front window located between the side frames, and a door movably provided in the side frames, The roof side is formed by drawing out a relatively thick steel pipe, and the slide door rail formed on the roof side for guiding the rollers of the door is a cab for construction machinery integrally formed by the drawing out. is there.

According to a third aspect of the present invention, a window glass is mounted on the side frame, and a window glass mounting flange for mounting the window glass is integrally formed on the roof side and the rear post by drawing. Or a cab for a construction machine according to 2.

According to a fourth aspect of the present invention, there is provided a construction machine according to any one of the first to third aspects, wherein the roof side and the rear post are integrally formed with a window glass abutting portion which comes into contact with the window glass by drawing. The cab.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiment of the present invention will be described in detail with reference to FIGS. 1 to 39. The skeleton 31 of the cab shown in FIG. 1 includes front posts 32 and 32 ', a roof side 33,
33 ', rear posts 34, 34' and side frames 37, 37 'consisting of upper joints 35, 35', 36, 36 'joining them at the bends;
Upper and lower cross members 38 and 39 connecting between 5 ′ and 36 and 36 ′, and vertical and horizontal connecting between lower ends of the side frames 37 and 37 ′ via lower joints 40, 40 ′, 41 and 41 ′. Connecting members 42, 42 ', 43, 43'
It is composed of

The roof sides 33, 33 ', the front posts 32, 3 constituting the side frames 37, 37'
2 ', rear posts 34, 34', connecting members 42, 4
The cross members 38, 39 and the connecting members 43, 43 'connecting the 2' and the side frames 37, 37 'are each formed by drawing a relatively thick steel pipe into a cross section as shown in FIG.
It is formed into a deformed steel pipe as shown in FIGS. 3 to 26 and FIGS. 29 to 37.

The roof side 33 '(and 33) is shown in FIG.
As shown in FIG. 3, the front window rail portion 44 '(44)
A sliding door rail portion / window glass mounting flange portion 45 '(45) is formed on the outside, and a roof panel mounting flange portion 61' is formed on the inside upper portion by drawing a relatively thick steel pipe.

As shown in FIG. 24, the front post 32 '(32) has a front window rail portion 46' (46) on the inside and a window glass butting portion and side glass mounting portion 4 on the outside.
7 '(47), a front window seal mounting flange 62' (62) is formed on the inner front part by the above-mentioned drawing process.

As shown in FIG. 30, the rear post 34 '(34) has a window glass abutment portion 49 (49') and a rear window mounting portion / rear panel mounting portion 63 '(63) formed by drawing.

The horizontal connecting member 43 '(43) is shown in FIG.
In addition to the floor panel receiving portion 43'a as shown in FIG.
It is formed by a drawing process so that a corner having a connection surface 66 with another member has a rounded square cross section.

The connecting member 43 on the front side has a design surface 43a and a floor panel receiving portion 43b as shown in FIG. 34. As the connecting member on the front side, as shown in FIGS. What is shown in FIG. 10, FIG. 35, and FIG. 36 is considered.

That is, the horizontal connecting member 7 shown in FIGS.
1 and 72, the cross-sectional shapes are slightly different, but in any case, the front window seal 75 mounting flanges 71a, 72a, the design surface 71
b, 72b, contact surfaces 71c, 72 with the body frame 77
c, floor panel 76 receiving portions 71d, 72d and front window 7
Eight lower end receiving portions 71e and 72e are formed.

As shown in FIG. 33, the vertical connecting members 42 and 42 'are formed with a slope 42a and a floor panel receiving portion 42'b by a drawing method so as not to hinder the driver's access.

FIG. 2 is a detailed view of the part A in FIG.

As shown in FIG. 2, one roof side 33
FIG. 3 shows a detailed view of a portion B in FIG. 1, and the other roof side 33 ′ and the front post 32 ′ are connected as shown in FIG. The example which connects by the joint 35 'is shown.

Of these, the roof sides 33, 33 '
As shown in FIGS. 2 and 3, the front window rails 44 and 44 'are located inside during assembly, and the outside is a slide door rail / window glass G mounting flange 45' and a roof panel mounting flange 61. 'Are located respectively.

The front posts 32, 32 'are shown in FIG.
As shown in FIG. 3, when the front window rail 46 (46 ') is assembled, the door abutment / side glass mounting portion 47' is provided on the outside so that the front window rail 46 (46 ') is located inside, and the front glass is provided on the front. The mounting seal flanges 62, 62 'are respectively located.

The upper joints 35, 35 'are made of, for example, cast iron or aluminum casting. First, the front upper joint 35,
35 'are front posts 32, 3 as shown in FIGS.
The main body 35a, 35'a having a desired curvature so as to be smoothly connected to each of the 2 'upper end, the roof side 33, 33' front end and the upper cross member 38, and the front post 3
2, 32 ', the roof side 33, 33' and the upper cross member 38, the connecting arms (35b,) 35'b, (35c,) integrally projecting from the trunks 35a, 35'a.
35'c, and 35d, 35'd.
Although not shown in the figure, reference numerals are attached for convenience; The connecting arms (35b,) 35'b, (35c,) 35 '
The cross-sectional shapes of c, 35d, and 35'd are formed so as to fit into the front posts 32, 32 ', the roof sides 33, 33', and the ends of the upper cross member 38, respectively.

As shown in FIG. 22, the surfaces of the trunks 35a and 35'a which are located inside during assembly are as shown in FIG.
Front window rails 46, 46 'of front posts 32, 32'
And front window rails 44, 4 of the roof side 33, 33 '
The front window rails 50 and (50 ') having the adjusting recesses 50a and (50'a) (see FIG. 22) communicating with the front side 4' are formed. , 33 ′ are formed with flange portions (51, 51) 51 ′ connected to the slide door rail portions and the window glass G mounting flange portions 45 (45 ′).

As shown in FIGS. 2 and 3, the front post 32,
The windshield seal mounting flanges 62, 62 'of the windshield 32' and the roof sides 33, 33 'and the adjusting mounting surfaces 64, 64' connected to the roof panel mounting flanges 61, 61 'are formed.

As shown in FIG. 3, the upper joint 3
As shown in FIGS. 2 and 3, hanging hooks / lamp stays 52 are attached to the trunks 35a, 35'a, and 70'a of the base members 5 and 35 ', and the grip 18 for getting on and off is attached to the mounting member 1 as shown in FIGS.
The getting on / off grip stay 53 for attachment at 8a can be integrally formed.

FIG. 4 shows another detailed exploded view of the portion B in FIG.

The upper joints (70) and 70 'shown in FIG. 4 are basically the upper joints 35 and 3 described with reference to FIGS.
Same as 5 ′, except that the cross-sectional shape of the connecting arm (70c,) 70′c matches the roof side 69 ′.

In addition, as shown in FIGS. 2 and 3, a hanging hook / lamp stay 52 and a getting on / off grip stay 53 are integrally formed on the base 70'a of the upper joint (70, 70) 70 '. be able to.

In the roof side 69 'shown in FIG.
The cross section shown in FIGS. 24 and 25 is also used. That is,
In the one shown in FIG. 24, the outer sliding door rail portion and the mounting flange portion 45 ′ for the window glass G are eliminated,
A door abutting portion 47 'is formed on the outside.

Reference numeral 46 'denotes a front window rail, and 62' denotes a windshield seal mounting flange.

The roof side / front post 86 shown in FIG. 25 also serves as a roof side and front post.
Outside the sliding door rail and window glass G mounting flange, the door seal receiving surface, side window mounting surface and side panel mounting surface 86a are eliminated.
Is formed. 86b is a front window rail, 86b
c is a roof panel mounting surface / front window seal mounting flange.

Further, the roof side shown in FIGS. 26 to 29 is also used. That is, in the roof side 87 shown in FIG. 26, a door seal receiving surface / side glass bonding surface 87a, a rubber seal type glass mounting flange 87e, and a slide door rail 87c are formed outside the roof side 87. In addition, 87b is a front window rail part, and 87d is a roof panel mounting surface.

Two cases using the roof side 87 will be described. One is that a rubber seal 89 is adhered to a side glass 83 and then fitted to the rubber seal type glass mounting flange 87e as shown in FIG. is there. The other is, as shown in FIG. 28, a method in which a rubber seal 90 is fitted to the rubber seal type glass mounting flange 87e, and a side glass 83 is fitted into the rubber seal 90 from outside.

The roof side 88 shown in FIG.
Although the cross-sectional shape is different from the roof side 87 shown in
A door seal receiving surface / side glass mounting surface 88a, a rubber seal type glass mounting flange 88e, and a slide door rail 88c are formed on the outside of the outside, similarly to the roof side 87. Reference numeral 88b denotes a front window rail, and 88d denotes a roof panel mounting surface.

FIG. 5 is a detailed view of a portion C in FIG.

The front post 32 and the vertical and horizontal connecting members 4
The lower joint 40 connecting the upper joint 3 and the upper joint 3
The concept is the same as that of 5, 35 ', and is made of, for example, cast iron or aluminum casting.

The front lower joint 40 is connected to the front post 3.
2 and to the vertical and horizontal connecting members 42 and 43, respectively.

The bolt hole 56 formed in the lower joint 40
Is provided for fixing the skeleton 31 to the cab to, for example, a swivel (not shown) of the construction machine.

FIG. 6 shows a detailed view of a portion G in FIG.

The rear lower joint 41 is connected to the rear post 3
4 (34 ') and each of the vertical and horizontal connecting members 42 and 43.

The rear lower joints 41, 41 'have substantially the same structure as the front lower joints 40, 40', and only the rear posts 34, 34 'are upright.
The only difference is that the connection arm (corresponding to (40b,) 40'b in FIG. 7 described later) facing upward is erected accordingly. Of course, the rear lower joints 41, 4
The cross-sectional shape of the connecting arm 1 ′ is also determined by the rear posts 34, 3
4 'and vertical and horizontal connecting members 42, 42', 43, 43 '
, For example, as shown in FIGS. 30 and 31 to 37.

FIG. 7 is a detailed view of a portion D in FIG.

The lower joint 40 'is integrally protruded from the main body 40'a, which is fitted to the relatively flat main body 40'a, the front post 32' and the vertical and horizontal connecting members 42 ', 43. Connecting arms 40'b, 40'c, and 40'd, and the connecting arms 40'b, 40'c, and 40'd
Is a cross-sectional shape of the front post 32 'and ends of the vertical and horizontal connecting members 42' and 43, for example, as shown in FIGS. 24 and 33 to 37.

FIG. 8 shows another detailed view of the portion C in FIG.
FIG. 9 shows still another detailed view of the portion C.

The lower joints 73 and 74 shown in FIGS.
3 shows one of the connecting arms, 73d and 74d, respectively, in FIG.
5. The points corresponding to the cross-sectional shapes of the lateral connecting members 71, 72 shown in FIG. 36 are the lower joints 40, 40 ', 41, 4,
Only the difference from 1 ′ is the same.

FIG. 10 is a cross-sectional view after assembling the part F in FIG.

FIG. 10 shows an example in which the horizontal connecting member 71 shown in FIGS. 8 and 35 is used.

As shown in FIG. 10, the horizontal connecting member 71
The lower end receiving portion 71c receives the lower end of the front window 78, the front window seal 75 is attached to the mounting flange 71a to seal the front window 78, the receiving portion 71d receives the floor panel 76, and the contact surface 71b is the main body. The lower joints 40 and 41 ′, which are in contact with the frame 77 and are not shown, are attached to the main body frame 77 through the bolt holes 56 (see FIG. 5).

FIG. 11A is a sectional view of a portion E in FIG.
FIG. 1B is a detailed view of the assembly E of FIG. 1, and FIG. 12 is an exploded detailed view of the section E of FIG.

11 and 12, the rear post 34, 34 'has a flange portion 4 for attaching the window glass G.
Numeral 8 'is located outside during assembly, so that the window glass G contacts the abutting portion 49 (49') of the window glass, and the rear window contacts the rear window mounting portion / rear panel mounting portion 63.

In the roof sides 33 ', 33, the window glass G comes into contact with the sliding door rail / window glass mounting flange 45' (45), and the steel plate joint g of the window glass G is fitted. Also, the roof panel mounting flanges 6 on the roof sides 33 ', 33 are provided.
The roof panel 23 is attached to 1 ', 61.

Rear posts 34, 34 'and roof side 3
The rear upper joints 36, 36 'connecting the 3', 33 are
As with the front upper joints 35, 35 ', the rear post 3
A base (36a,) 36'a having a desired curvature to be connected to the upper end of each of the upper and lower members 4, 34 ', the rear end of the roof side 33, 33' and the upper cross member 39 (FIG. 1); The trunks (36a,) 3 fitted to the roof members 34, 34 ', the roof sides 33, 33', and the upper cross member 39
Connecting arm (36b,) 36 'integrally projecting from 6'a
b, (36c,) 36'c, and (36d,) 36'd
It has.

The connecting arms (36b) 36'b, (36
c,) 36'c, and (36d,) 36'd have cross-sectional shapes of the rear posts 34, 34 ', (37), 37', the roof sides 33, 33 ', and the end of the upper cross member 39, respectively. The shape fits the cross-sectional shape.

The surfaces of the trunks 36a, 36'a which are located inside during assembly are roof sides 33, 3 '.
The front window rails (54,) 54 'are formed so as to communicate with the front window rails 44, 44' of the 3 '. A rail portion / window glass G mounting flange portion (45, 45) 45 'and a rear window post 34, 34' are connected to the window glass mounting flange portions (48, 48) 48 'to form the same flange portions (55, 55). Have been.

Each of the roof panel mounting flanges (6) of the roof side 33, 33 'and the rear post 34, 34'
An adjustment mounting surface (65, 65) is formed to connect the (1,) 61 'to the rear window G mounting / rear panel mounting portion (63,) 63'.

FIGS. 13 to 1 show the rear post.
7 is also considered.

That is, as shown in FIG. 31, the rear post 79 'shown in FIG. 13 has a side glass mounting surface / side panel mounting surface 79a and a rear panel mounting surface / back glass mounting surface 79'b. I have.

The rear post 79 'is shown in FIGS.
As shown in FIG. 14, for example, a side glass 83 is bonded to the side glass mounting surface / side panel mounting surface 79a, and a seal 85 is fitted to the rear panel mounting surface / back glass mounting surface 79'b. The back glass 84 is brought into contact with the back glass 84 so as to be openable or closable, or the seal 85 'is adhered to the back glass 84 as shown in FIG. .

The rear post 80 'shown in FIG.
Although the cross-sectional shape is different from that of the rear post 79 ', a side glass mounting surface / side panel mounting surface 80'a and a rear panel mounting surface / back glass mounting surface 80'b are similarly formed. Above rear post 8
As shown in FIG. 17, for example, the side glass 83 is attached to the side glass mounting surface / side panel mounting surface 8.
At the same time, the back glass 84 is adhered to the rear panel mounting surface / back glass mounting surface 80'b, and the back glass 84 is brought into openable and closable contact therewith as shown in FIG.

The rear upper joint (8) shown in FIGS.
1), 81 ', (82) and 82' are also the joints 36 and 3
13 and 16 except that the roof side (69, 69) and the rear post (7
9,) 79 ', (80,) 80' have different cross-sectional shapes between the roof sides 33, 33 'joined by the joints 36, 36' and the rear posts (34, 34) ', (37,) 37'. Therefore, the connecting arm (81b,) 81 '
b, (81c,) 81'c and (82b,) 82'b,
(82c,) 82'c are formed.

The main joints 3 of the upper joints 36, 36 '
As shown in FIGS. 11 and 12, a hanging hook / lamp stay 52 can be integrally formed with 6a and 36'a as required.

FIG. 21 shows the above-described front posts 32, 32 ', roof sides 33, 33', and rear posts 34, 34 'constituting the skeleton 31 of the cab, and the vertical and horizontal connecting members 42, 42'. , 43, 43 ′, the corresponding sections are indicated by lines BB to GG, and the respective cross-sectional views are shown in FIG.
4 (CC sectional view), FIG. 30 (DD sectional view), FIG.
3 (sectional view along line EE), FIG. 34 (sectional view along line FF), and FIG. 37 (sectional view along line GG).

FIG. 25 and FIG. 26 are diagrams of FIG.
31 and 32 are cross-sectional views of another example of FIG. 30 (DD cross-sectional view), and FIG. 35 is a cross-sectional view of another example of FIG.
FIG. 34 shows a sectional view of another example of FIG. 34 (a sectional view taken along line FF).

Next, an example of assembling the construction machine cab of the present invention having the above configuration will be described.

First, as described in FIGS. 2 and 3, the front posts 32, 32 'and the roof sides 33, 33' are disguised as the connection arms 35'b, 35'c of the upper joints 35, 35 '. Then, the front posts 32, 32 'are attached to the connecting arms 35'b.
To the roof arms 33, 33 'on the connecting arms 35'c.
To weld.

Similarly, as shown in FIGS. 11 and 12, the roof sides 33, 33 'and the rear posts 34, 34' are disguised as connecting arms 36'c, 36'b of the upper joints 36, 36 '. Later, the connecting arms 36'c are attached to the roof sides 33, 33 '.
Of the rear posts 34, 3 on the connecting arm 36'b.
The upper ends of 4 ′ are welded to form right and left side frames 37, 37 ′ of the cab frame 31.

Next, as shown in FIGS. 5 and 7, the front posts 32, 32 ', the vertical connecting members 42, 42' and the horizontal connecting member 43 are connected to the lower joints 40, 40 ', 41, 4, 4.
After disguising the connecting arms 40'c and 40'd of 1 ', the vertical connecting members 42 and 42' are welded to the connecting arms 40'c, and the horizontal connecting members 43 are welded to the connecting arms 40'd. I do.

As shown in FIG. 6, the rear post 34,
34 ′, the vertical connecting members 42, 42 ′ and the horizontal connecting member 43 ′ are connected to the lower joints 40, 40 ′, 41, 4
Weld them, disguised as 1 '.

Further, as shown in FIG.
After disguising upper cross members 38 and 39 on upper joints 35, 35 ', 36 and 36' before and after the right and left side frames 37 and 37 ', respectively, the skeleton 31 is formed by welding. .

The roof 23 described with reference to FIG. 11 is welded to this frame 31 to the roof panel mounting flanges 61, 61 'of the roof sides 33, 33'.
After attaching the vertical column 91 shown in FIG. 1, this is painted and dried.

Thereafter, the window glasses G and 83 are placed in FIG.
As shown in FIG. 12, the engaging portion g is engaged with the slide door rail / window glass mounting flange (45) 45 'and the window glass mounting flanges 48, 48' of the rear posts 34, 34 '. At the same time, the front window 78 is attached as shown in FIG. 10, and the back glass 84 is attached as shown in FIGS.

Thereafter, the front window FW and the door D are attached as shown in FIGS.

That is, as shown in FIGS. 19 and 20, the front window FW has a slide roller R defeated at the upper and lower ends thereof.
1, the roof side 33, 33 'and the front post 32,
32 'front window rails 44, 44' and 46, 46 '
, The user can mount and slide as shown in FIG.

As shown in FIG. 20, for example, the upper end of the door D supports an upper slide roller R2 via an upper arm U attached to the door D, and the roller R2 is connected to the roof sides 33, 33. 'Slide door rail and window glass mounting flange 45
If inserted into 45 ', it can be slid freely as shown in FIG.

In the above, according to the present invention, two or more functions such as member attachment, assembly adjustment, connection, butting of other members, and design display are combined and held on the deformed cross-section steel pipe,
Since the mounting member is formed integrally, there is also an effect that the number of parts to be attached can be reduced and the number of parts can be reduced, so that a construction machine cab with good overall appearance can be obtained.

Also, by using the joint, the steel pipe does not need to be bent slightly, so that the cross section of the steel pipe can be complicated, and the flexibility in forming the cab can be increased by the flexibility in forming the joint. it can.

That is, in the conventional case, as shown in FIG. 39, when the side frame 1 is formed by a single deformed pipe, in order to perform bending accurately, it is necessary to extend the radial direction over the entire length of the bent portion B. Must be the same. Further, there is a limit on the minimum radius of the bent portion B, and furthermore, it is impossible to change the radial bending radius C over the entire length of the bent portion B.

However, in the present invention, as shown in FIG. 38 (a), the joint 35 (36) for connecting the roof side 33 and the front post 32 (or the rear post 34) is employed, so that the bent portion F is formed. The distance (thickness) in the radial direction at the upper end and the lower end can be changed as D1 and D2, and the minimum radius of the bent portion F can be smaller than that of B in FIG. It can be changed.

Further, as shown in FIG.
The outer shape of the bent portion G can be made to be a slope 68. Further, as shown in FIG.
The width of the roof side 33 and the front post 32 at the upper end and the lower end of 1 may be different from H1 and H2.

[0088]

In summary, according to the present invention, a cab for a construction machine according to the present invention is a cab for a construction machine having a skeleton, in which a relatively thick steel pipe is drawn from a front post and a roof side forming the skeleton. It is formed by processing, and the front window rail section to guide the front window formed on the front post and the roof side, the slide door rail section to guide the door, and the window glass to the roof side and the rear post are attached. By integrally forming the window glass mounting flange and the like by the drawing process, there is also an effect that the number of parts can be reduced and the number of parts can be reduced, and the effect of providing a good-looking construction machine cab overall can be obtained. is there.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing an example of a framework of a cab for a construction machine according to the present invention.

FIG. 2 is a detailed view of a portion A in FIG.

FIG. 3 is an exploded detailed view of a part B of FIG. 1;

FIG. 4 is an exploded detailed view of another example of the part B in FIG. 1;

FIG. 5 is a detailed view of a portion C in FIG. 1;

FIG. 6 is a detailed view of a portion G in FIG. 1;

FIG. 7 is a detailed view of a portion D in FIG. 1;

FIG. 8 is a detailed view of another example of the part C in FIG. 1;

FIG. 9 is a detailed view of still another example of the part C in FIG. 1;

FIG. 10 is a cross-sectional view of a portion F of FIG. 1 after assembly.

11A is a partial sectional view of a part E of FIG. 1, and FIG. 11B is a detailed assembly view of a part E of FIG.

FIG. 12 is an exploded detailed view of a part E of FIG. 1;

FIG. 13 is an exploded detailed view of another example of a portion E in FIG. 1;

FIG. 14 is a horizontal sectional view showing the vicinity of a rear post in FIG. 13;

FIG. 15 is a horizontal cross-sectional view of another example near the rear post in FIG. 13;

FIG. 16 is an exploded detailed view of still another example of a portion E in FIG. 1;

FIG. 17 is a horizontal sectional view of the vicinity of a rear post in FIG. 16;

FIG. 18 is a perspective view of an example of a cab for a construction machine of the present invention in which a front window and a door are assembled.

19 is a perspective view showing a part of FIG.

20 is a partially exploded perspective view of FIG.

FIG. 21 is an overall perspective view showing another example of the framework of the cab for a construction machine of the present invention.

FIG. 22 is a detailed perspective view of a part A in FIG. 21;

FIG. 23 is a sectional view taken along line BB of FIG. 21;

24 is a sectional view taken along line CC of FIG. 21.

FIG. 25 is a sectional view showing another example of the line BB in FIG. 21;

FIG. 26 is a sectional view showing still another example taken along line BB of FIG. 21;

FIG. 27 is a sectional view of the unit shown in FIG. 26 at the time of assembly.

FIG. 28 is a sectional view of the unit shown in FIG. 26 at the time of assembly.

FIG. 29 is a cross-sectional view showing another example at the time of assembling, which is shown in FIG. 26;

30 is a sectional view taken along line DD of FIG. 21.

FIG. 31 is a sectional view showing another example of the line DD in FIG. 21;

FIG. 32 is a sectional view showing still another example taken along line DD in FIG. 21;

FIG. 33 is a sectional view taken along line EE of FIG. 21;

FIG. 34 is a sectional view taken along line FF of FIG. 21;

FIG. 35 is a sectional view showing another example of the line FF in FIG. 21;

FIG. 36 is a cross-sectional view showing yet another example of the line FF in FIG. 21;

FIG. 37 is a sectional view taken along line GG of FIG. 21.

FIG. 38 is a perspective view showing a state of a bent portion in the skeleton of the cab for construction equipment of the present invention.

FIG. 39 is a perspective view showing a state of a bent portion in a skeleton of a cab for a conventional construction machine.

FIG. 40 is an overall perspective view showing an example of a skeleton of a conventional cab for a construction machine.

FIG. 41 is an overall perspective view showing another example of the skeleton of the conventional cab for a construction machine.

FIG. 42 is an exploded detailed view of a part a in FIG. 41.

FIG. 43 is a detailed assembly view of a portion b in FIG. 41.

FIG. 44 is an exploded detailed view of a part a of FIG. 40;

FIG. 45 is a detailed view of a part b in FIG. 40;

FIG. 46 is a detailed view of a part c in FIGS. 40 and 41.

FIG. 47 is an exploded detailed view of a portion d in FIG. 40.

FIG. 48 is a detailed assembly view of part d in FIG. 40;

FIG. 49 is an overall perspective view showing still another example of the skeleton of the conventional cab for construction machine.

50 is a sectional view taken along line AA of FIG. 49.

FIG. 51 is a perspective view showing a state of a bent portion in a skeleton of a conventional cab for a construction machine.

[Explanation of symbols]

1, 1 ', 10, 10', 37, 37 'Side frame 2, 2', 3, 3 ', 42, 42', 43, 43 'Connecting member 4, 11, 31 Frame 5, 5', 6, 6 ', 7,
7 'steel plate deformed pipe 8, 8', 9, 9 'steel plate joint 12 upper cross member
13 outer shell member 14 seal flange 15 slide rail 1
6 Holding bracket 17 Hanging hook 18 Getting on / off grip 19
20, 21 Welding 22 Reinforcement member 23 Roof panel 24 Window glass 25 Mounting flange 32, 32 'Front post 33, 33' 69, 69 ', 87, 88 Roof side 34, 34', 79, 79 ', 80, 80 '' Rear posts 35, 35 ', 36, 36', 70, 70 ', 81, 8
1 'Upper joints 38, 39 Upper cross members 40, 40', 41, 41 ', 73, 74 Lower joints 42, 42' Vertical connecting members 43, 43 ', 71,
72 Horizontal connecting member 44, 44 'Front window rail 45, 45' Sliding door rail and window glass mounting flange 46, 46 '50, 50', 54, 54 'Front window rail 47, 47 'Window glass abutment part and side glass attachment part 48, 48' Window glass attachment flange 49, 49 'Window glass abutment part 51, 51', 55, 55 'Flange part 52 Suspension hook and lamp stay 53 Getting on / off grip stay 56 Bolt hole 61, 61 'Roof panel mounting flange 62, 62' Front window seal mounting flange 63, 63 'Rear window mounting / rear panel mounting 64, 64', 65, 65 'Adjustment mounting surface 83 Side glass 84 Back glass 85,
85 'seal 86 roof side and front post 89, 90 rubber seal G window glass FW front window D door R1 slide roller U upper arm R2 upper slide roller.

Claims (4)

[Claims] 1. A side frame comprising a front post, a roof side, a rear post, and an upper joint connecting these at a bent portion, an upper cross member connecting each of the upper joints, and a lower joint between lower ends of the side frames. A front window located between the side frames and a cab for a construction machine having a door movably provided on the side frame, wherein the front post and the roof are formed. The side was formed by drawing out a relatively thick steel pipe, and the front window rail for guiding the front window rollers formed on the front post and the roof side was integrally formed by the drawing process. A cab for construction machinery characterized by the above. 2. A side frame comprising a front post, a roof side, a rear post, and an upper joint connecting these at a bent portion, an upper cross member connecting each of the upper joints, and a lower joint between lower ends of the side frames. In the cab for construction machinery in which a skeleton is formed by the vertical and horizontal connecting members connected through the front window located between the side frames and the cab for the construction machine in which the door is movably provided on the side frame, the roof side is relatively A cab for a construction machine, wherein a thick steel pipe is formed by a drawing process, and a slide door rail formed on the roof side for guiding a roller of the door is integrally formed by the drawing process. 3. The construction according to claim 1, wherein a window glass is mounted on the side frame, and a window glass mounting flange for mounting the window glass is integrally formed on the roof side and the rear post by drawing. Cab for machinery. 4. The cab for a construction machine according to claim 1, wherein a window glass abutting portion that comes into contact with the window glass is integrally formed on the roof side and the rear post by a drawing process.