JPH04138456U - construction machinery cabin - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the riding comfort of operators operating inside the cabin of construction machinery and to improve maneuverability. [Configuration] A seat (26) where the operator sits, a lever (43) and a pedal (45) operated by the operator
is provided on an integrated platform (41), and the four corners of this platform (41) are supported by springs (42) and shock absorbers (47) placed, for example, upwardly and inwardly on the cab floor (7) of the cabin of the construction machine. do. [Effect] The seat (26), lever (43), and pedal (45) are installed on the integrated platform (41), so even if the cabin is subjected to vibrations, there is no relative displacement between these components, and the lever The pedals are easier to operate, and the spring (42) and shock absorber (47) effectively absorb vertical and horizontal vibrations of the seat (26).

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention applies to the cabins of construction machines such as hydraulic excavators and civil engineering machines, especially inside the cabins. Regarding the installation structure of the operator seat.

0002

[Conventional technology]

Figure 3 shows the appearance of a typical hydraulic excavator, with a swing frame mounted on the lower traveling body 2. The upper swing body 3 is rotatably mounted via the swing frame 5, and the front part of the swing frame 5 is A front 1 is installed in the center, and a cabin 4 is installed on one side of the front 1. upper part The revolving body 3 has the function of turning 360°, and the lower traveling body 2 can move forward and backward and spin turn. It also has a pivot turn driving function.

0003 The cabin 4 is a cab support on one side of the front of the swing frame 5 as shown in Fig. 4. It is placed on the section 9. In other words, there are four support brackets in the cab support part 9. 10, with mounting holes 8 in the four corners that match these support brackets 10. Place the cab floor 7 on top of the cab support part 9 and insert it through the mounting hole 8. After the screws are screwed, the main body of the cabin 4 is fixed to the cab floor 7.

0004 Figure 5 shows the details of the attachment structure of the cabin 4 to the swing frame 5. Insert the hole in the support bracket 10 provided in the cab support part 9 of the Sandwich the ring-shaped mount rubber 17 as the core, and put caps on the top and bottom of it. 21 and welded it to the bottom of the mounting hole 8 of the cab floor 7. The boss 15, the upper and lower caps 21, and the mount rubber 1 are brought into contact with the bottom of the boss 15. Insert the bolt 33 through 7 and tighten the nut 20 from below through the washer 19. By attaching it, the cab floor 7 is attached to the swing frame 5. 18 is a collar for providing a predetermined distance between the upper and lower caps 21. Meanwhile cabin A rib 12 is fixed to the lower inner surface of the main body 11 of 4, and this rib 12 is It is placed on a boss 12b that is welded to the top surface of the cab floor 7 and has a thread cut in the center. and is fixed with a bolt 14 via a washer 13. In this way, the cab body 11 It is fixed to the swing frame 5 together with the cab floor 7. Note that 16 is before assembly. A rubber weather strip inserted between the cab body 11 and the swing frame 5 It is a top.

[0005] In the center of the cab floor 7 in the cabin 4, there is a seat as shown in FIG. 26 is attached. Seat 26 was bolted up onto the cab floor 7 It is mounted on the suspension part 34 mounted on the base 22, and the operator A cushion 27 on which the data sits, an armrest 24, a back 25, and a headrest 3. 6 and an adjuster 23. Inside cabin 4 is the operation station As shown in Fig. 7, the seat 26 is manually operated by the operator. A lever 28 is provided.

[0006] The suspension part 34 of the seat 26 is connected to the base 22 and the cushion as shown in FIG. 8(a). A type consisting of a parallel link 32 connecting the lower part of the section 27 and a spring 31. As shown in FIG. 8(b), the lower part of the base 22 and the cushion 27 are connected. There is a so-called b type consisting of an X link 30 and a spring 29.

[0007]

[Problem that the idea aims to solve]

Conventional civil engineering machines such as hydraulic excavators with the above structure are subject to severe This causes the following problem because the sensor receives strong vibrations. 1) The cab floor which usually supports the cabin 4 to cope with this vibration 7 has a mount rubber 17, a weather strip 16, etc. at the four corners as shown in FIG. It is supported by rubber springs, but these rubbers are used to effectively absorb vibrations. By making the spring softer and lowering the spring constant, when the excavator is subjected to lateral vibration, the key There is a risk that Cabin 4 will swing sideways and hit the front 1 boom adjacent to the cabin. Therefore, there is a constraint that soft springs cannot be used, and vibrations cannot be effectively absorbed. I can't do it. 2) On the other hand, the suspension part 34 of the seat 26 has a structure as shown in FIG. Although it is effective against downward vibrations, it does not absorb vibrations in any way against lateral loads. In fact, the looseness of the spring support mechanism causes harmful noise and vibrations to occur. Occur. Further, as shown in FIG. Because it is fixed to the lower 7, there is a difference between the vertical movement of the seat and the vertical movement of the lever. There is a problem in that the positional relationship of the pilots changes, making it difficult to maneuver.

[0008]

[Means to solve the problem]

In order to solve the above problems, according to the present invention, the seat on which the operator sits and , levers and pedals operated by the operator are installed on an integrated platform. and that the platform was supported on the cab floor at its four corners. A construction equipment cabin is provided.

[0009] According to a preferred embodiment of the invention, the platform is raised at its four corners. on the cab floor via springs and shock absorbers facing inward. Supported by

0010

[Effect]

As mentioned above, in this invention, the seat, control levers, and pedals are placed on the cab floor. On the other hand, it is mounted on a one-piece platform supported at the four corners. This means that even if the platform moves due to an external force applied to the cab floor, the platform will not move. They exhibit the same behavior on the form, and there is no change in relative position between them, which may interfere with maneuvering. There is nothing to be done.

[0011] Also, in a preferred embodiment of the invention, the platform is attached to the cab floor. It is supported by springs placed upward and inward at the four corners, absorbing vertical movement. At the same time, it also increases rigidity against horizontal movement and prevents deformation due to lateral loads on the cab floor. can be reduced.

0012

【Example】 Next, one embodiment of the present invention will be described. The cab floor 7 is shown in Figures 4 and 5 as before. It is attached to the swing frame 5 in the manner shown in FIG. are doing.

[0013] As shown in FIGS. 1 and 2, in one embodiment of the present invention, there are four Platform 4 with spring 42 and shock absorber 47 installed at 1 is supported. The platform 41 has a low, flat surface in the center. Both left and right sides stand up, and above them are the upper ends of the spring 42 and the shock absorber 47. A flange is formed to attach the parts, and the front and back are open. Pratt Pedals 45 are provided at two locations in front of the low level flat portion of the form 41. A stand 46 is welded to the center of the flat portion. On the stand 46 there is a A portion of the seat 26 excluding the suspension portion 34 is bolted. However, the machine If the machine is subject to extremely strong vertical vibrations, it may be necessary to There is a structure between the seat 26 and the table 46 that has high rigidity in the horizontal direction and effectively absorbs vibrations only in the vertical direction. A suspension section may be provided to accommodate the vehicle. In this case, the operator's control pedal and This creates a certain amount of relative movement between the lever and the seat 26, but the amount is limited by the present invention. Vibration is absorbed only by the suspension of seat 26 without using the platform. This is significantly less than if you do it.

[0014] Further, in this embodiment, the platform 41 has a spring arranged upwardly and inwardly. 42 and shock absorber 47, but the link mechanism, spring and The combination of shock absorbers makes the platform 41 as if it were above its center of gravity. It is configured so that it is supported from one point on the side and swings, and automatically responds to vibrations in the horizontal direction. It is also possible to provide a function such as restoration.

[0015]

[Effect of the idea]

A pedal 45, a lever 43, and a seat 26 are mounted on the platform 41. Since these behave in the same way, the relative vibrations generated in the cab floor 7 There is no displacement, making it easier for the operator to maneuver.

[0016] Platforms 41 are arranged upwardly and inwardly at four locations relative to the cab floor 7. The cab flow is supported by a spring 42 and a shock absorber 47. The vertical and horizontal vibrations of the seat 26 caused by the external force transmitted to the It is possible to effectively absorb vibrations. Due to the above, the operator operating in cabin 4 This improves ride comfort and maneuverability.

[Brief explanation of drawings]

FIG. 1 is a side view showing a supported state of a platform in an embodiment of the present invention.

FIG. 2 is a front view of the same as above.

FIG. 3 is a side view showing the overall appearance of a general hydraulic excavator.

FIG. 4 is an exploded view of the cabin before assembly to the swing frame.

FIG. 5 is an enlarged partial sectional view showing a method of fixing the swing frame, the cab floor, and the cab body.

FIG. 6 is a perspective view of a conventional operator seat.

FIG. 7 is a perspective view showing the arrangement of seats and operating levers in a conventional cabin.

FIG. 8 is a side view of a conventional operator seat, in which (a) shows a seat with an a-type suspension part, and (b) shows a seat with a b-type suspension part.

[Explanation of symbols]

1 Front 2 Lower running body 3 Upper revolving body 4 cabin 5 Swing frame 7 Cab floor 26 sheets 41 Platform 42 Spring 43 Lever 45 Pedal 47 Shock absorber

Claims (3)

[Scope of utility model registration request] Claim 1: A seat (26) on which an operator sits, a lever (43) and a pedal (4) operated by an operator;
5) are provided on an integrated platform (41), and the platform (41) is supported at its four corners on a cab floor (7). Claim 2: The platform (41) connects the cab floor (7) through springs (42) and shock absorbers (47) arranged upwardly and inwardly at its four corners.
Construction machine according to claim 1, characterized in that it is supported on. 3. A claim characterized in that the platform (41) is supported at its four corners on the cab floor (7) by a mechanism that makes it appear as if the platform (41) is supported from a point above the center of gravity of the platform containing the operator. The construction machine according to item 1.