CN203768977U - Operating room for construction machinery - Google Patents

Abstract

The utility model provides a construction machinery cab, when the precision of the operation of joint application gap filler between roof part and the roof beam in the cab produced the deviation, under the condition that the joint between roof part and the roof beam has formed the clearance, can both prevent from this clearance invade the indoor invasion's of cab that the driver took to rainwater etc. in the inboard cab of roof part. The left beam (28) to which the roof member (30) is welded has, on its upper surface: a joint (28 a) to which a roof member (30) is welded; and a convex part (28 b) which is higher than the joint part (28 a), and a dyke part (28 c) which connects the joint part (28 a) and the convex part (28 b) and prevents rainwater and the like from entering the operation chamber is formed.

Description

Operating room for construction machinery

technical field

The utility model relates to an operating room for construction machinery comprising a plurality of pillars, a plurality of beams for connecting the upper parts of the pillars, and a roof member whose periphery is joined to the upper surfaces of the beams.

Background technique

In general, a hydraulic excavator, which is a representative example of a construction machine, is roughly composed of a self-propelled undercarriage, an upper revolving body mounted on the undercarriage so that it can rotate freely, and is mounted on the front side of the upper revolving body so that it can move in pitch. The working arm device constitutes. An operator's cab, which is a driver's cab, is provided on the revolving frame forming the skeleton structure of the upper revolving body.

The operation room has a frame structure roughly composed of a plurality of pillars erected on the revolving frame of the upper revolving body, and a plurality of beams for connecting the upper parts of these pillars. A roof member having a sunroof formed of a light-transmitting sheet material is provided on the upper surface of the operator's cab in order to secure the driver's forward and upward view on the front side.

From the viewpoint of protecting the driver, in order to improve the rigidity of the frame structure of the operator's cabin, etc., the pillars and beams of the operator's cabin are sometimes formed using special-shaped steel pipes obtained by drawing steel pipes. In this case, in order to install roof members, windows, doors, etc. on the pillars and beams that constitute the frame structure of the operating room, flanges that protrude toward the inside of the operating room in a flange shape are formed on the sides of the pillars and beams. The overhanging portion is attached such that a roof member or the like is in contact with the overhanging portion at its peripheral portion (for example, refer to Patent Document 1).

The roof members of the operator's room other than the skylight are formed by pressing a steel plate, and are brought into contact with the protruding parts of the beams, and joined to the beams by welding. The portion where the roof member is welded is a portion extending upward from the contact portion with the protruding portion of the beam in consideration of the workability of the welding work, and is joined to the beam by welding at the extended portion. In order to prevent rainwater and the like from intruding into the operating room inside the roof member, a caulking agent is applied to the joint.

prior art literature

  Patent Documents

 Patent Document 1: Japanese Patent Laid-Open No. 2010-264780

The conventional structure as described above has the following technical problems that should be solved.

That is, when the accuracy of applying the caulking agent to the joint between the roof member and the beam of the operator's cabin varies, or the caulking agent deteriorates, the joint between the roof member and the beam may be damaged. If a gap is formed, in this case, the sealing function of the caulk that prevents rainwater from intruding into the operating room inside the roof member may become insufficient, and the rainwater that intruded into the operating room inside the roof member may further intrude into the driver's seat. In the operating room where the crew boards.

Utility model content

The utility model provides an operation room for construction machinery, which is completed in view of the above-mentioned circumstances, and the technical problem to be solved is: to provide a structure that can prevent the The construction machine operator's cabin where rainwater or the like that has entered the operator's compartment inside the roof member from the gap enters into the operator's operator's cabin.

Technical solutions to technical problems

According to the present invention, as an operation room for construction machines that solves the above-mentioned technical problems, there is provided an operation room for construction machines that includes: a plurality of pillars; a plurality of beams for connecting the upper parts of the pillars; A roof member to which the upper surface of the beam is joined is characterized in that the upper surface of the beam is formed on the inner side of the operation room than the joint between the roof member and the beam to prevent rainwater, etc. The embankment of the indoor intrusion of the chamber.

Preferably, the upper surface is formed higher than the joint portion, and the bank is formed by an upper surface member of the beam connecting the upper surface and the joint portion.

Utility Model Effect

The operating room for construction machinery constructed according to the present invention is formed with an operating room for preventing the upper surface of the beam, rainwater, etc. Invasive embankments. Therefore, even if a gap is formed at the junction between the roof member and the beam, rainwater or the like that intrudes from the gap into the operating room inside the roof member is blocked by the bank. Therefore, it is possible to prevent the intrusion of rainwater or the like into the operator compartment where the driver boards.

Description of drawings

Fig. 1 is a side view of a hydraulic excavator equipped with a construction machine operator's cab according to the present invention.

Fig. 2 is a perspective view showing a frame structure of the construction machine cab shown in Fig. 1 .

Fig. 3 is a sectional view viewed from the AA direction in Fig. 2 .

Symbol Description

21. Hydraulic excavator (construction machinery); 12. Operating room; 14. Right front pillar; 16. Left front pillar; 18. Right rear pillar; 20. Left rear pillar; 22. Front beam; 24. Rear beam; 26. Right beam 28, left beam; 28a, junction; 28b, convex portion; 28c, embankment; 30, roof component; 30a, junction; 30b, step portion; 30c, connection portion.

Detailed ways

Hereinafter, an operator's cab for a construction machine constructed according to the present invention will be described with reference to the embodiments shown in FIGS. 1 to 3 in a hydraulic excavator which is a typical construction machine.

Referring to FIG. 1 for description, the hydraulic excavator represented by number 2 as a whole generally consists of a crawler-type (crawler type) lower traveling body 4, an upper revolving body 6 mounted on the lower traveling body 4 that can rotate freely, and It is constituted by an arm device mounted on the front side of the upper slewing body 6 so as to be able to freely move in pitch. When performing excavation work on sandy soil or the like, the arm device 8 is pitched and the upper revolving body 6 is swung relative to the lower traveling body 4 to perform excavation work on the sandy soil or the like.

On the revolving frame 10 constituting the skeleton structure of the upper revolving body 6 , an operator's cab 12 serving as a driver's cab is provided on the left front side thereof. In addition, the front and rear directions and the left and right directions used in the description of this specification are the front and rear directions and the left and right directions seen by the driver in the operator room 12 in FIG. 1 when the hydraulic excavator 2 is used for work. left and right directions.

Referring to FIG. 2 , the operator room 12 has a frame structure roughly composed of a plurality of pillars erected on the revolving frame 10 of the upper revolving body 6 and beams connecting the pillars.

Specifically, the operating room 12 is equipped with: a pair of left and right front pillars 14 and left front pillars 16 erected on the front part of the swivel frame 10; a right rear pillar 18 erected behind the right front pillar 14; The left rear pillar 20 erected in the rear; the front beam 22 for connecting the upper parts of the left and right front pillars 14, 16; the rear beam 24 for connecting the upper parts of the left and right rear pillars 18, 20; a right beam 26 connecting the upper part of the pillar 14 and the upper part of the right rear pillar 18 ; and a left beam 28 connecting the upper part of the left front pillar 16 and the upper part of the left rear pillar 20 .

The right beam 26 is formed by bending the upper end of the right front pillar 14 , extends rearward from the upper end of the right front pillar 14 , and joins its rear end to the upper end of the right rear pillar 18 by welding. Like the right beam 26, the left beam 28 is provided as a part formed by bending the upper end of the left front strut 16, extends rearward from the upper end of the left front strut 16, and connects its rear end to the left rear strut 20 by welding. the upper end of the joint.

From the standpoint of protecting the driver, in order to improve the rigidity of the frame structure of the operator's cab 12 , the pillars and the beams are formed of deformed steel pipes obtained by drawing steel pipes.

A roof member 30 having a sunroof 32 formed of a translucent sheet material is provided on the upper surface of the cab 12 in order to ensure the driver's forward and upward view on the front side. The skylight 32 is supported by the roof member 30 through hinges so as to be swingable up and down, and can be opened upward. The roof member 30 of the operator room 12 other than the sunroof 32 is formed by pressing a steel plate, and is joined to each of the beams 24 , 26 , 28 other than the front beam 22 by welding. These joints are coated with a caulking agent in order to prevent rainwater and the like from intruding into the operator compartment 12 inside the roof member 30 .

The periphery of the joint portion between the roof member 30 and the beam will be described with reference to FIG. 3 . The roof member 30 has, on the outer edge portion on the left side, a joining portion 30a joined to the left beam 28 by welding; a stepped portion 30b formed higher than the joining portion 30a; and a connecting portion 30c connecting the joining portion 30a and the stepped portion 30b. . The junction part 30a, the stepped part 30b, and the connection part 30c are integrally formed as the part which forms the left outer edge part of the roof member 30. As shown in FIG.

The junction part 30a is located in the left end part of the roof member 30, and extends substantially horizontally in the front-back direction. The stepped portion 30b is located on the inner side of the joining portion 30a, and extends substantially horizontally in the front-rear direction. The connection part 30c is located between the step part 30b and the junction part 30a, extends outward and downward from the step part 30b to the junction part 30a, and is formed in the shape of a slope connecting the junction part 30a and the step part 30b. In addition, the connection part 30c may be a surface perpendicular to the junction part 30a and/or the step part 30b.

On the other hand, the left beam 28 welded to the left outer edge of the roof member 30 has, on its upper surface: a joint portion 28a joined to the joint portion 30a of the roof member 30 by welding; and a convex portion formed higher than the joint portion 28a. 28b; and a bank portion 28c connecting the joining portion 28a and the convex portion 28b. The junction part 28a, the convex part 28b, and the bank part 28c are integrally formed as the part which forms the upper surface of the left beam 28. As shown in FIG.

The junction part 28a is located in the outer edge side of the operation room 12, and extends substantially horizontally in the front-back direction. The convex part 23b is located in the inside of the operation room 12 rather than the joint part 28a, and extends substantially horizontally in the front-back direction. The bank portion 28c is located between the convex portion 28b and the joint portion 28a, extends outward and downward from the convex portion 28b toward the joint portion 28a, and is formed in a sloped shape connecting the joint portion 28a and the convex portion 28b. In addition, the bank part 28c may be a surface perpendicular to the junction part 28a and/or the convex part 28b.

The joint portion 28a of the left beam 28 and the joint portion 30a of the roof member 30 are in contact with each other, but the convex portion 28b of the left beam 28 and the stepped portion 30b of the roof member 30, and the embankment 28c of the left beam 28 and the roof member 30 The connection portions 30c are spaced at predetermined intervals.

The operation of the construction machine operator's cab as described above will be described.

Convex portion 28b of left beam 28 of operator cab 12 for construction machinery according to the present invention is formed higher than joint portion 28a, and bank portion 28C connecting joint portion 28a and convex portion 28b is formed. Therefore, even when the accuracy of the work of applying the caulking agent varies, or the caulking agent deteriorates, a gap is formed between the joint portion 30 a of the roof member 30 and the joint portion 28 a of the left beam 28 . In this case, the bank portion 28c blocks rainwater or the like from entering the operator compartment 12 inside the roof member 30 from the gap, so that the rainwater or the like can be prevented from entering the operator compartment 12 where the driver sits.

Taking the left beam 28 as an example, the periphery of the joint between the roof member 30 and the beam has been described, but even the periphery of the joint between the right beam 26 and the roof member 30 is the same The same structure around the joint portion between the other beams can also be set to the same structure. In addition, although the convex part 28b of the left beam 28 and the step|step-difference part 30b of the roof member 30 have predetermined space|intervals in the Example, they may contact|abut each other.

Claims (2)

1. An operating room for construction machinery, comprising: a plurality of pillars; a plurality of beams for connecting the upper parts of the pillars; and a roof member whose periphery is joined to the upper surface of the beams, characterized in that, A joint between the roof member and the beam is formed on the upper surface of the beam near the inside of the operation room to prevent rainwater from entering the interior of the operation room. 2. The operation room for construction machinery according to claim 1, wherein the upper surface is formed higher than the joint portion, and the upper surface member of the beam that connects the upper surface and the joint portion is used. This embankment is formed.