JP2001180381A - Getting on/off device for construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a getting on/off device for a construction machine capable of being letting an operator get on/off a cab easily and speedily. SOLUTION: The getting on/off device for the construction machine comprises a slide-type cab arranged on a vehicle body slidably longitudinally, and allows the operator to get on or off the cab. A cat walk for allowing walking of the operator is fixed to the lower part outside a doorway of the slide-type cab, or provided movably synchronously with the slide cab.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator for a construction machine.

[0002]

2. Description of the Related Art In a construction machine having an undercarriage and an upper revolving superstructure such as a hydraulic shovel, when an operator gets on or off a cab having a driver's seat, the operator is provided on one portion of the undercarriage or on the undercarriage. It is often the case that the user steps on the steps and gets on and off while supporting the body by grasping the handrail provided on the cab. Referring to FIG. 6, a description will be given of a first example of a getting-on / off device of a construction machine according to the related art. Construction machinery 1
Has an upper revolving unit 8 above an endless track type lower traveling unit 9. The lower traveling unit 9 includes a crawler belt 11 that produces traction and a track frame 10 that supports the weight of the lower traveling unit 9.
have. The upper swing body 8 includes the cab 2, a working machine (not shown), and an engine hydraulic chamber 15.
In the cab 2, a cab front handrail 4 is provided in the front left corner outside the cab 2 over substantially the entire height of the cab in a vertical direction, and a cab upper handrail 3 is provided horizontally in an upper rear portion of an entrance 34 of the cab 2. Are arranged respectively. The front end of the track frame 10 has a front first step 2
4 are provided. A handrail 5 inside the cab is provided in the cab 2 at the left rear portion in the vertical direction. FIG. 7 shows a state where the door 29 is fully opened.

FIG. 7 shows a second example of a prior art getting-on / off device.
Will be described with reference to FIG. Construction machine with slide cab 27
Has a lower traveling body 9 and an upper revolving body 8 like the construction machine 1 shown in FIG. 6, but the slide type cab 14 is separated from the engine hydraulic chamber 15 by a predetermined operation of the operator, and Is slid forward on the frame 8a. FIG. 7 shows a state in which the slide cab 14 is at the front end position of the frontmost end of the vehicle body. The rearmost position where the sliding cab 14 does not slide forward is referred to as a rear end position. The sliding cab 14 is provided with a handrail 4 before the cab and a handrail 5 inside the cab. A front first step 24 is provided at the front end of the track frame 10. Note that in FIG.
Indicates a fully opened state. For example, as shown in FIG. 8, the multi-stage telescopic arm 18, which is rotatably attached to the upper swing body 8 via the boom 17 so as to be vertically rotatable, ascends and descends, as shown in FIG. The deep foundation excavation is performed to a predetermined depth by the bucket 20 attached to the tip of the 18. The operator moves the lower traveling body 9 to the excavation hole 30.
Can be excavated while confirming the excavation condition of the excavation hole 30 from the slide-type cab 14 which has approached the vertical wall 31 and slid forward.

[0004]

However, the above technique has the following problems. First, in the getting-on / off device of the first example shown in FIG. 6, the operator puts his / her feet on the front first step 24 while holding the cab front handrail 4 with the left hand, and turns the door 29 with the right hand to open. After opening door 29,
Step on the cab 2 with your feet on the floor edge inside the cab 2. Thereafter, when closing the open door 29, in order to obtain a reaction force for closing the door 29 and stabilize the body, the operator grasps the handrail 5 in the cab with the left hand, leans out, and leans on the door 29 with the right hand. Grip (not shown) and try to pull it toward the cab 2. Then, as the door 29 approaches the cab 2, the operator's left hand changes the position where the operator grips the cab front handrail 4 from the cab handrail 5, but changes the position from the front end of the cab inner handrail 5 to the cab front handrail 4. The distance is large and the operator has no place to grab during that distance. For this reason, there is a problem that the reaction force cannot be sufficiently supported, the body of the operator fluctuates while the door 29 is being closed, and the door 29 cannot be closed easily.

[0005] Next, in the getting-on / off device of the second example shown in FIG. 7, the slide type cab 14 is located at the front end position and the tip of the lower traveling body 9 is approaching the vertical wall 31 of the excavation hole 30. Even if the operator attempts to get off the slide cab 14, the operator cannot get off because there is no handrail or step for moving the operator behind the cab 2. For this reason, the operator had to return to the rear end position of the slide cab 14 before getting on and off, and the operation was troublesome, and he could not easily get on and off. As described above, when the slide cab 14 is at the front end position and the vehicle body is approaching the vertical wall 31, the position of the slide cab 14 must be changed each time the vehicle gets off in order to be able to get on and off the slide cab 14. Return to the rear end position, and move the lower traveling structure 9 to the vertical wall 31.
However, at this time, it is necessary to slide the cab 14 and move the lower traveling body 9 again to get on the vehicle and resume work. Therefore, there is a problem that it takes a long time to get on and off, and the workability is reduced.

The present invention has been made in view of the above problems, and has as its object to provide a getting-on / off device for a construction machine that allows an operator to easily get on and off in a short time.

[0007]

Means for Solving the Problems, Functions and Effects In order to achieve the above-mentioned object, the invention according to the first invention is directed to a cab having a pivotable door which pivots horizontally to open and close an entrance. A cab upper handrail disposed at the upper rear portion of the cab entrance, and wherein the cab upper handrail is located above the cab entrance, wherein the cab upper handrail is located above the cab entrance. It is arranged almost over the entire area from the rear to the front.

According to the first invention, the operator enters the cab when getting on and off and turns the door with the right hand in the closing direction when closing the door. At this time, the left hand can move forward in order until the door closes at the position where the upper handrail of the cab, which is arranged over substantially the entire area from the upper rear portion to the front portion of the cab entrance, closes. For this reason, since the point which supports the reaction force which rotates a door to the end of closing a door can be ensured, a door can be closed with sufficient force and a cab can be easily opened and closed. Also, while the door is closed, the body is always supported by the three points of both hands and feet, so that the body can be stably closed.

According to a second aspect of the present invention, there is provided an elevator apparatus for a construction machine including a sliding cab disposed on a vehicle body so as to be slidable in the front-rear direction, and enabling an operator to get on and off the cab. The cab upper handrail is provided over a part of the entrance from the rear part to the front part or substantially over the entire area.

[0010] According to the second aspect of the present invention, when the operator enters the cab during riding and closes the door, the user turns the door with the right hand in the closing direction. At this time, the left hand can grasp the cab upper handrail provided over a part of the cab entrance from the rear part to the front part or the entire area. Similarly, when the operator inside the cab opens the door when getting off, the operator can turn the door in the opening direction with the right hand, and the left hand can grasp the cab upper handrail. Therefore, it is possible to secure a point for supporting the reaction force that rotates the door until the door is completely opened and closed, so that the door can be opened and closed with a sufficient force, and the cab can be easily opened and closed.
Also, while the door is closed, the body is always supported by the three points of both hands and feet, so that the body can be stably closed.

[0011] A third aspect of the present invention is an elevator apparatus for a construction machine, comprising a sliding cab disposed on a vehicle body so as to be slidable in the front-rear direction, and enabling an operator to get on and off the cab. A catwalk that allows the operator to walk is fixedly attached to the lower part of the outside of the doorway, or is movably provided in synchronization with the slide of the slide cab.

According to the third aspect of the present invention, when the slide type cab is at the front end position and the vehicle body is approaching the vertical wall of the excavation hole, and when getting off the vehicle, the door is opened and the operator can use the cat on the lower outside of the cab. The user rides on the walk and pivots in the direction to open the door to move on the catwalk to the rear of the vehicle. When the door is fully opened, the body is switched to the rear of the vehicle body and moves on the catwalk toward the front of the vehicle body while rotating in the direction to close the door. After closing the door, move on the catwalk toward the rear of the vehicle and get off. When riding, approach the door on the catwalk from the rear of the body of the catwalk and open the door. It moves on the catwalk toward the rear of the vehicle body while rotating in the direction to open the door. When the door is fully opened, the body is switched to the front of the vehicle body, and this time, the body moves toward the front of the vehicle body while rotating in the closing direction, enters the cab, and closes the door. As described above, when the operator moves on the catwalk back and forth on the catwalk when getting on and off, the door can be opened and closed with the body constantly stabilized, so that the operator can easily get on and off the cab. Further, the door can be opened and closed in a stable state even with a tool or the like in one hand.

According to a fourth aspect, based on the second aspect, when the sliding cab is at a position slid forward from the rear end position or when the cab is at the rear end position, each of the cabs gets into and out of the sliding cab. And a plurality of routes for getting on and off.

According to the fourth aspect of the present invention, there are provided a plurality of routes for getting on and off the cab when the sliding cab is at the front end position or at the rear end position. . For example, when the cab is at the front end position, it is impossible to get on and off from directly below the cab, so it gets on the vehicle body via the step of the predetermined position of the lower traveling body, moves from the rear of the cab toward the front, and opens the cab door. Open and close,
Has a route into the cab. On the other hand, for example, when the cab is at the rear end position, a route means that can get on and off from immediately below the cab and a route means that can get on and off from behind the cab are provided. In this way, the operator can select a route that can get on and off in a short time according to the state, so that the workability can be improved.

According to a fifth aspect based on the fourth aspect, the means for getting on and off the slide cab when the slide cab is at the front end position is disposed at the front of the track frame of the lower traveling body which can travel freely. A front step on which the operator places his or her feet, a catwalk fixed to the lower outside of the entrance of the slide cab or movably provided in synchronization with the slide of the slide cab, and a rear side of the catwalk. And a handrail on which a foot of an operator is placed, and a handrail provided behind the catwalk and near the small walkway.

According to the fifth aspect, when the slide cab is at the front end position, the operator grasps the handrail behind the catwalk and rides on the catwalk via the small walking platform. Then, the user moves the front and rear sides of the vehicle body on the catwalk while opening and closing the door while grasping the entire cab rail and the cab front rail. After entering the cab, the door is closed while grasping the handrail in the cab and the handrail in the entire area on the cab. As a result, when opening and closing the door, the body weight is supported by the catwalk, and the hand can grasp the entire area of the cab on the cab and the handrail in front of the cab, so that the reaction force at the time of opening and closing can be sufficiently supported and the door can be easily opened and closed. it can. In addition, the door can be opened and closed while keeping the body stable, and the user can get on and off the cab in a short time.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. The first embodiment will be described with reference to FIGS. 6 and 7 will be described with the same reference numerals.
The description of the same configuration as that described with reference to FIGS. 6 and 7 will be omitted, and only different configurations will be described. FIG. 1 shows a left side view of a construction machine to which the getting on / off device according to the present embodiment is applied. A handrail 26 on the entire cab is horizontally arranged over the entire area from the upper rear portion to the front portion of the entrance 34 of the cab 2. The operation of the present embodiment will be described with reference to FIG. FIG. 2 is a perspective view of the cab 2 when the door 29 is closed as viewed obliquely from above. At the time of getting off, the operator opens the door 29, grasps the entire cab handrail 26 on the cab or the handrail 5 in the cab with the left hand, and pushes the door 29 to the rear of the vehicle body with the right hand to fully open the door. And the handrail 5 in the cab with your right hand,
Grasp the cab front handrails 4 with your left hand, and get off your feet while changing the position of the crawler belt 11 and the track frame 10,
The door 29 is closed.

When riding, use the left hand to move the handrail 4 in front of the cab.
And put the foot on the front first step 24 and open the door 29 with the body resting on the crawler belt 11. Once down on the ground, the door 29 is rotated to fully open. Then, grab the handrail 5 inside the cab 2 with the right hand and the handrail 4 in front of the cab with the left hand.
The crawler belt 11 enters the cab 2 in steps. Cab 2
While standing inside, the handrail 5 inside the cab is grasped with the left hand, and the door 29 is turned in the closing direction with the right hand and pulled in. At this time, in the process of rotating the door 29, the left hand changes the gripping position from the in-cab handrail 5 to the front part via the rear part of the cab whole area handrail 26, and the left hand rotates the door 29. Support the power.

Next, effects of the present embodiment will be described. When getting on, the operator standing in the cab
While rotating 9 in the closing direction, the left hand grips the entire cab handrail 26 on the cab to support the reaction force. The handrail 26 on the entire cab is moved from the rear to the front of the vehicle body.
Is arranged over the entire upper area of the cab, so that the operator's left hand can gradually grab from the rear of the body of the cab on the whole area of the cab 26 to the front, and always support the body at the three points of feet, left hand and right hand. Therefore, the door 29 can be closed stably and easily. Thereby, the getting on and off device of the construction machine which can be easily got on and off can be obtained.

Next, FIG. 3 shows the configuration of the second embodiment. 6 and 7 will be described with the same reference numerals. The description of the same configuration as that described with reference to FIGS. 6 and 7 will be omitted, and only different configurations will be described. FIG.
Sliding cab 1 of construction machine 27 with slide cab
4 shows a left side view when 4 is at the front end position. The entire area of the handrail 26 on the cab is the entrance 34 of the sliding cab 14.
Is disposed horizontally across the entire area from the upper rear to the front. A first handrail 6 after the cab is disposed in the vertical direction at a rear portion on the left side outside the sliding cab 14, and a second handrail 7 after the cab is disposed adjacent to the first handrail 6 after the cab. Further, a catwalk 21 is attached to the lower left portion of the sliding cab 14 so as to protrude from the sliding cab 14 in a horizontal direction so as to allow a foot of an operator to be placed thereon. The catwalk 21 is a pedestal for walking when the operator gets on and off the slide-type cab 14, and continues in the front-rear direction from a substantially middle position of the entrance of the slide-type cab 14 to a position close to the first handrail 6 after the cab. . A front footrest 23 is attached to the left end of the front lower surface of the catwalk 21. A front handrail 33 is attached to a side of the front footrest 23. A rear footrest 22 is attached to the lower surface of the small walking platform 32 between the first handrail 6 after the cab and the second handrail 7 after the cab. Further, when the sliding cab 14 is at the front end position, the rear footrest 2
The front second step 35 is attached to a position on the track frame 10 immediately below the second step 35. In addition, front first step 2
The fourth step 4 and the front second step 35 are disposed one by one at symmetrical positions with respect to the turning centers of the left and right track frames 10, 10.

Next, the operation of this embodiment will be described with reference to FIGS. FIG. 4 is a perspective view of the slide cab 14 viewed from obliquely above when the slide cab 14 is at the front end position and the door 29 is closed. FIG. 5 is a perspective view of the sliding cab 14 viewed from obliquely above when the sliding cab 14 is at the rear end position and the door 29 is closed. Note that the closed door 29 is indicated by a two-dot chain line. First, referring to FIG. 4, a procedure for the operator to get off the slide cab 14 when the slide cab 14 is at the front end position will be described. The operator uses the sliding cab 1
4, open the door 29 from the inside, grasp the front part of the entire cab rail 26 on the cab with the left hand, turn the door 29 outward with the right hand, and shift the left hand to the rear part of the whole cab rail 26 above the catwalk. The door 29 is fully opened by moving over the vehicle body 21 to the rear of the vehicle body. When the door 29 is fully opened and pushed strongly toward the vehicle body, a lock mechanism (not shown) is activated to open the door 2.
9 is restrained and locked. The operator separates the right hand from the door 29 and grasps the rear first handrail, and the left hand grasps the rear part of the entire handrail 26 on the cab and moves the body to the small walking platform 32.
Transfer to Next, to close the door 29, the operator
The user unlocks the door 29 with his left hand and pushes the outside of the door 29 to rotate in the closing direction and move forward on the catwalk 21. While rotating the door 29 with the left hand in the closing direction, the right hand is the first handrail 6 after the cab, and the entire area above the cab is the handrail 2.
Grab in the order of 6. When the door 29 has been closed, the user moves again toward the rear of the vehicle body while changing the position on the catwalk 21 where the handrail 26 on the entire cab area is grasped. Small walkway 3
When it comes to 2, the left hand grasps the rear first handrail, the right hand grasps the rear second handrail, and moves the rear footrest 22, the crawler belt 11, and the front second step 35 one by one while changing the grasping position downward, Get down to the ground.

Next, a description will be given of a riding procedure when the slide cab 14 is at the front end position and the door 29 of the slide cab 14 is closed. The operator standing on the ground grasps the first handrail 6 after the cab and the second handrail 7 after the cab with both hands, and places his / her feet on the front second step 35, the crawler belt 11 and the rear footrest 22 in this order, Put both feet on 32. After changing the right hand holding the second handrail 7 after the cab to the first handrail 6 after the cab, the entire handrail 26 on the cab is grasped with the left hand, and the catwalk 21 is taken from the left foot,
The gripping position of the entire handrail 26 on the left cab is moved to the front and the catwalk 21 is moved to the front of the vehicle body. And
Open the door 9 with the left hand, rotate the door 9 to the rear of the vehicle body, and use the right hand to move the entire handrail 26 on the cab and the first handrail 6 after the cab.
Then, the cab is returned to the small walking platform 32 while being grasped and changed in the order of the second handrail 7 after the cab. After opening the door 29, the operator moves the catwalk 21 to the front of the vehicle body while grasping the entire handrail 26 on the cab with both hands again, and
Enter 4 Then, the door 29 is rotated and closed with the right hand while holding the handrail 5 in the cab and the entire handrail 26 on the cab with the left hand.

Next, referring to FIG. 5, a description will be given of a procedure for getting on and off when the slide type cab 14 is at the rear end position. When the sliding cab 14 is at the rear end position, there are a plurality of getting on and off routes. The first route is a front first step 24, a front footrest 23, a scaffold of the catwalk 21, and a front handrail 33. , Handrail 4 in front of cab and handrail 5 in cab
There is a route R1 composed of a handrail. Route R1
When getting off the vehicle, the door 29 is opened, the handrail 5 in the cab is gripped, the catwalk 21, the front footrest 23, and the front first step 24 are hung in this order, and the vehicle descends on the ground. After descending to the ground, the door 29 is closed. When getting on, grab the front handrail 33 with the left hand, put the foot on the front first step 24, put the body, and then use the left hand to turn the cab front handrail 4
And open the door 29 with your right hand. Once down on the ground, the door 29 is rotated to fully open. Then, the user grabs the front handrail 33 with his left hand, places his / her foot on the front first step 24, lifts the body upward, and rides on the catwalk 21 via the front footrest 23. Open door 2
In order to close the cab 9, the user once moves to the rear of the vehicle body while grasping and changing the entire cab rail 26 and the cab rail 5 with the left hand, and then holding the entire cab rail 26 and the cab rail 5 with the left hand while holding the door 5 with the right hand. The lock mechanism of 29 is disengaged, and the door 29 is moved in the forward direction while rotating in the closing direction to enter the sliding cab 14 and close the door 29.

As the second route, the scaffolds of the truck frame 10, the rear footrest 22, the small walking platform 32 and the catwalk 21, the first handrail 6 after the cab, the second handrail after the cab,
There is a route R2 composed of the handrail 7, the entire cab handrail 26 and the handrail 5 in the cab. The procedure for getting off and getting on is the same as the procedure when the slide cab 14 is at the front end position, and thus the description is omitted here.

Next, the effects of this embodiment will be described. The sliding cab 14 is at the front end position and the vehicle body is
When the operator gets off the vehicle while approaching the vertical wall 31 in the vicinity, when the door 29 is opened, the operator rides on the catwalk 21, grasps the entire handrail 26 on the cab with the left hand, and handles the door 29 with the right hand. , So I always support my body stably with my hands and feet. Also, when closed, the body is always stably supported by the three points of both hands and feet. In this manner, the door 29 of the slide cab 14 can be easily closed with the body stabilized when getting off the vehicle. After closing door 29, cab with both hands
The user can grasp the handrail 6 and the second handrail 7 after the cab, and can get off the ground easily while stepping on the small walking platform 32, the rear footrest 22 and the first step 13. Also, when the vehicle is ridden with the sliding cab 14 at the front end position and the vehicle body is approaching the vertical wall 31 of the excavation hole 30 in a manner similar to when getting off, the body is always moved at three points. The door 29 can be opened and closed while being supported. As described above, even when the slide cab 14 is at the front end position, the door 29 can be easily opened and closed and the passenger can get on and off with a stable body condition. Thereby, getting on and off is easy, and fatigue of the operator can be reduced. Further, since it is not necessary to return the slide cab 14 to the rear end position and to move the lower traveling body 9 away from the vertical wall 31 of the excavation hole 30 at the time of getting off, the time required for getting on and off the vehicle can be shortened. Performance can be improved.

When the slide cab 14 is at the rear end position, the operator can get on and off from directly below the slide cab 14 through the first getting on / off route R1. In addition, the second boarding / alighting route R2 allows the vehicle to get on and off when the vehicle body is approaching the vertical wall 31 of the excavation hole 30 or the like. That is, a route that is convenient when the operator is difficult to approach directly below the sliding cab 14, such as when the vehicle body is close to the vertical wall 31 and the position directly below the sliding cab 14 is close to the vertical wall 31. It is. These plurality of getting on / off routes facilitate getting on / off when the sliding cab 14 is at the rear end position.

In the present embodiment, the catwalk 21 is attached to the lower portion of the side of the slide cab 14, but the invention is not limited to this. The catwalk 21 may be slid in synchronization with the slide. The synchronization system at this time may be a mechanical system in which the catwalk 21 is pulled by a lever or connected by a link, or an actuator drive system by operating an actuator such as a hydraulic cylinder or an electric motor. In the present embodiment, the entrance 34 of the cab 2
Although it has the entire area handrail 26 provided over the entire area from the upper rear part to the front part, the handrail is not limited to this, and may be a handrail partially provided above or below the entrance 34 of the cab 2. In the present embodiment, the front first step 24
And the front second step 35 is attached separately.
From the position of the front first step 24 to the front second step 35
May be a single elongated plate-shaped front step extending over the position. According to such a single elongated plate-shaped front step, it is possible to get on and off regardless of the sliding position of the slide-type cab 14 between the front end position and the rear end position, and the getting on and off is facilitated.

As described above, according to the present invention, the entire cab rail on the cab is provided from the rear upper portion to the front portion of the entrance of the cab having the pivotable door. When the operator enters the cab and closes the door, the operator turns the door with the right hand and closes the door while grasping and changing the entire handrail on the cab with the left hand. As described above, even when the operator is in the cab and closes the door, the reaction force can be supported while changing the handrail on the entire cab from the rear part to the front part of the vehicle body,
The body is always supported by the three points of the foot, the left hand and the right hand, and the door 29 can be stably and easily closed. Further, according to the present invention, the catwalk is provided so that the operator can move on the outer lower portion of the cab in the front-rear direction, and the rear footrest and the small walking platform are provided behind the catwalk.
This allows the operator to easily grab the handrail after the cab from the ground and ride on the rear part of the catwalk while changing the foot on the rear footrest and the small walking platform.
When the door is opened and closed while grasping the cab whole area handrail, the cab front handrail and the cab handrail, the weight of the operator is supported by the catwalk, and the reaction force can be supported by the grasped handrail. And your right hand to support your body, open and close the door easily, and get on and off in a short time. Further, since the front footrest and the front handrail are provided at the front end of the vehicle body of the catwalk, when the cab is at the rear end position, it is possible to get on and off from immediately below the cab. As a result, when the cab of the construction machine with a slide cab is at the front end position and the vehicle is getting on and off when the vehicle body is approaching the vertical wall of the excavation hole, the operator always supports the body stably with both hands and feet on the catwalk. The door can be opened and closed while moving. Further, even if the door is closed when the user gets on the vehicle, the user can easily open and close the door from the catwalk. Further, since it is not necessary to return the cab to the rear end position and to move the vehicle body away from the excavation hole at the time of getting on and off, it is possible to get on and off in a short time and to obtain the getting on and off device of the construction machine having a predetermined work efficiency.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a first embodiment.

FIG. 2 is a perspective view of the first embodiment.

FIG. 3 is a configuration diagram of a second embodiment.

FIG. 4 is a perspective view of a cab of a second embodiment in a front end position.

FIG. 5 is a perspective view of a cab according to a second embodiment at a rear end position.

FIG. 6 is an explanatory view of a getting-on / off device of a construction machine with a fixed cab according to the related art.

FIG. 7 is an explanatory diagram of a getting-on / off device of a construction machine with a slide cab according to a conventional technique.

FIG. 8 is an explanatory view of a working example of the construction machine with a slide cab.

[Explanation of symbols]

1: Construction machine, 2: Cab, 3: Handrail above cab, 4
... handrail in front of cab, 5 ... handrail in cab, 6 ... first after cab
Handrail, 7 ... second handrail after cab, 12 ... first step, 1
3 ... second step, 14 ... slide cab, 21 ... catwalk, 22 ... rear footrest, 23 ... front footrest,
24: front first step, 26: whole area handrail on cab, 2
7 ... Construction machine with slide cab, 29 ... Door, 32 ...
Small walkway, 33 ... front handrail, 34 ... doorway, 35 ... front second step.

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Toshimasa Kanda 3-1-1, Ueno, Hirakata-shi, Osaka F-term in Komatsu Ltd. Osaka Plant (reference) 2D015 EA02 EB00 3D022 AA00 AC10 AE07

Claims (5)

[Claims] 1. A cab having a pivotable door that pivots in a horizontal direction to open and close an entrance, and a cab upper handrail disposed at a rear upper portion of the entrance of the cab. In a construction machine getting on and off device, the cab upper handrail is disposed over substantially the entire area from a rear upper portion to a front portion of an entrance and exit of the cab. 2. A lift device for a construction machine comprising a slide cab disposed on a vehicle body so as to be slidable in the front-rear direction, wherein an operator can get on and off the cab. A lift device for a construction machine, comprising: a cab upper handrail disposed partially or substantially entirely from a rear portion to a front portion. 3. An elevator system for a construction machine comprising a slide cab disposed on a vehicle body so as to be slidable in the front-rear direction, wherein an operator can get on and off the cab. A climbing machine for a construction machine, wherein a catwalk that allows an operator to walk is fixed to a lower portion or is movably provided in synchronization with a slide of a slide cab. 4. The lift device for a construction machine according to claim 2, wherein when the slide cab is at a position slid forward from a rear end position or when the slide cab is at a rear end position, the slide cab gets into and out of the slide cab. And a plurality of routes for getting on and off the vehicle. 5. The lift device for a construction machine according to claim 4, wherein the means for getting on and off the slide cab when the slide cab is at the front end position is provided at a front portion of the track frame of the movable lower traveling body. A front step on which the operator places his or her feet, and a catwalk (21) fixedly attached to the lower outside of the entrance of the sliding cab or movably provided in synchronization with the sliding of the sliding cab. A small pedestal (32) provided behind the catwalk (21) for placing the operator's feet, and a handrail (6) provided behind the catwalk (21) and near the small pedestrian (32). , 7) a construction machine getting on and off device.