WO2002085773A1

WO2002085773A1 - Elevator cage and elevator

Info

Publication number: WO2002085773A1
Application number: PCT/JP2001/003264
Authority: WO
Inventors: Koji Shitamiya
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2001-04-17
Filing date: 2001-04-17
Publication date: 2002-10-31
Also published as: EP1386876A1; EP1386876A4; JP4839566B2; CN1436147A; EP1386876B1; CN1247428C; JPWO2002085773A1

Abstract

An elevator cage (1) in which a safety fence being assembled on the upper part (1a) of the cage is provided with a removable securing member (8) such that the securing member (8) is secured in the direction of frontage of entrance when the safety fence is tilted. Since a worker remove the securing member (8) in order to ride on the upper part (1a) of the cage at the time of maintenance or inspection work and assembles the safety fence using the securing member (8), the safety fence is assembled without fail at the time of maintenance or inspection work.

Description

Description Elevator cage and elevator system

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator cage and an elevator device, and more particularly, to an elevator cage and an elevator provided with a safety fence at an upper part of a cage for a worker to work during maintenance and inspection of the elevator device. Related to overnight equipment. Background art

Heretofore, there has been known an elevator cage having a retractable safety fence at the top of the cage for maintenance and inspection of the elevator device.

Hereinafter, a known elevator cage will be described with reference to FIG. 5a and 5b are a perspective view and a side view showing a state of a known elevator cage during maintenance and inspection. As shown in the figure, the safety fences provided on the upper part 1a of the elevator cage 1 mainly consist of support members 3, front and rear pillar members 4a and 4b, handrail members 5, and arm members. It is composed of 6.

Here, the support member 3 is fixed to the cage upper part 1a. The end of the front column member 4 a is rotatably joined to the center of the support member 3 with a pin. An end of the rear column member 4b is rotatably joined to an end of the support member 3 with a pin. One end of the handrail member 5 is rotatably joined to an end of the front column member 4a with a pin. The other end of the handrail member 5 is rotatably joined to an end of the rear column member 4b by a pin connecting the two column members 4b. Further, one end of the arm member 6 is rotatably joined to the center of the rear column member 4 b by a pin, and the other end is located at a position closer to the rear column member 4 b from the center of the support member 3. It is rotatably joined by pins.

Here, the arm member 6 is mainly composed of two plate members joined by pins and a stopper provided near the pins to limit the rotation of the two plate members. When performing maintenance and inspection of the elevator, the operator must first From the direction where the door 2 of the cage 1 is provided, get into the upper part 1a of the cage. Then, the safety fence is raised, and the rotation of the two plate members of the arm member 6 is restricted by the stopper. In this way, rotation between the members is also restricted. Then, the worker performs desired work without falling down while being protected by the safety fence. FIG. 5c is a side view showing a normal state of the known elevator cage. As shown in the figure, the safety fence is folded in order to secure the space above the elevator car 1 during normal times other than maintenance and inspection. Specifically, the stopper of the arm member 6 is released, and the two plate members can be rotated by the pins. As a result, each member becomes rotatable at the pin portion, and the safety fence is folded.

However, in such known elevator cages, the safety fence is easily folded into the upper part 1a of the cage without assembling the safety fence because the safety fence is folded flat on the cage upper la. You can get on. In addition, since the worker can work without setting up a safety fence, there was a problem that the fall of the worker from the elevator cage could not be reliably prevented.

Therefore, the present invention solves such a problem of the conventional elevator cage, and ensures that the safety fence is raised by the worker at the time of maintenance / inspection, and that the worker from the elevator package can take the safety fence. An object of the present invention is to provide an elevator cage and an elevator device that reliably prevent falls. Disclosure of the invention

According to the present invention, there is provided a fixing member which can be inserted into and removed from a safety fence assembled above a cage of an elevator, and the fixing member is fixed in a frontage direction of the entrance when the safety fence is lowered. . As a result, when performing maintenance and inspection, the worker removes the fixing member to get on the cage and assembles the safety fence using the fixing member. Work can be avoided.

Further, the present invention provides a safety fence assembled on the upper part of the cage of the elevator, which includes a support member and a handrail member, the handrail member is rotatably joined to the support member, and the handrail member is laid when the handrail member is turned down. It is formed so as to block the entrance. As a result, when performing maintenance and inspection, the worker raises the handrail member to enter the upper part of the cage and is safe. Since all fences are assembled, working without assembling the safety fence can be avoided.

Further, in the present invention, the support member of the improved elevator cage is provided with a stopper for limiting a rotation angle of the handrail member. Thus, except during maintenance and inspection, the handrail member can be tilted to an arbitrary position to reliably prevent a worker from climbing into the upper part of the cage.

Further, in the present invention, the handrail member of the improved elevator elevator cage described above is formed so as to cover the upper part of the cage when the handrail member is folded down. As a result, when the handrail member is tilted down, the foothold of the worker is not secured, and it becomes impossible to stand upright.Therefore, it is possible to prevent the worker from working on the upper part of the cage with the handrail member tilted down. it can. In addition, the present invention provides the above-described improved elevator apparatus in the elevator apparatus. This ensures that the safety fence is raised during maintenance and inspections, and that work without assembling the safety fence can be avoided. BRIEF DESCRIPTION OF THE FIGURES

FIGS. 1a and 1b are perspective views showing a preferred first elevator cage according to the present invention during maintenance and inspection and during normal operation.

FIGS. 2a and 2b are perspective views showing a preferred second elevator cage according to the present invention during maintenance and inspection and during normal operation.

3a and 3b are perspective views showing a preferred third elevator cage according to the present invention in a state during maintenance and inspection and in a normal state.

FIGS. 4A and 4B are perspective views showing a preferred fourth elevator cage according to the present invention during maintenance and inspection and during normal operation.

Figures 5a and 5b are a perspective view and a side view showing the state of the known elevator cage during maintenance and inspection.Figure 5c shows the known elevator cage during normal operation. It is a side view which shows a state. BEST MODE FOR CARRYING OUT THE INVENTION

The present invention will be described in more detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing an elevator car (cab of an elevator) according to a first embodiment of the present invention. Specifically, FIG. La is a perspective view showing the state of the elevator cage according to the first embodiment at the time of maintenance and inspection, and FIG. Lb is a normal view of the elevator cage according to the first embodiment. It is a perspective view showing a state at the time. In Fig. 1a and Fig. 1b, 1 is an elevator car, which allows people to enter and exit from door 2 (car doorway) and to carry in / out luggage.

Numeral 1a is the upper part of the elevator 1st cage. Above the upper part 1a of the cage (outside of the cage), a retractable safety fence (car railing device) is provided. The cage upper part 1a is formed flat so that a worker can step on it to perform maintenance and inspection work.

The safety fence provided on the upper part 1a of the cage is mainly composed of support members 9, handrail members 7, and fixing members 8, and the door 2 side is opened to serve as an entrance for workers. These members are, for example, steel materials, are bent, and have an L-shaped cross-sectional shape.

Here, the four support members 9 are fixed to the respective corners of the cage upper part 1a by welding or the like. The two support members 9 fixed to the door 2 have a bracket 13 formed on the upper portion by welding or the like. Further, the support member 9 has an elongated hole at an end thereof into which the stepped screw 11 is inserted.

The handrail member 7 has an internal thread at which the stepped screw 11 is attached at an end, and a screw fastening hole into which the screw 12 is inserted, at a corner. The handrail member 7 is inserted between the pillar member 9 on the door 2 and the pillar member 9 on the rear side (opposite to the door 2), and is provided with a stepped screw 11 penetrating an elongated hole. The support member 9 is rotatably coupled to the support member 9. Further, the fixing member 8 has internal thread portions at both ends, and can be fastened to both handrail members 7 with the screws 12 penetrating the screw fastening holes of the handrail member 7. First, a storage procedure in the safety fence configured as described above will be described. During maintenance, as shown in Figure la, when the two handrail members 7 are raised, a fixing member 8 is screwed between the two handrail members 7 to limit the rotation of those handrail members 7 as shown in Figure la. Concluded by 1 2 In addition, the fixing member 8 in this state also functions as a handrail of the safety fence at the time of work, like the handrail member 7. And the worker With the door 2 on the upper part 1a of the cage as the entrance, the operator will work on the upper part 1a of the cage.

When the maintenance / inspection is completed, first, the fixing member 8 fixed to the handrail member 7 is removed by the operator. Next, after the handrail member 7 is slid upward along the shape of the elongated hole of the support member 9, the handrail member 7 is lowered in the direction of the arrow in FIG. Thereafter, the worker descends from the upper part 1 a of the cage and fixes the fixing member 8 to the bracket 13 of the support member 9.

On the other hand, the procedure for assembling the safety fence from normal time to maintenance and inspection is the reverse of the procedure for storing the safety fence described above.

As described above, at normal times other than during maintenance and inspection, the fixing member 8 is attached to the left and right support members 9 on the door 2 side of the cage upper part 1a so as to prevent workers from getting into the upper part la of the cage. Mounted on bracket 13. That is, the fixing member 8 is fixed in the direction of the frontage of the entrance of the safety fence, and blocks entry and exit of the worker into the working space. As a result, when the operator starts maintenance and inspection, the fixing member 8 in front of the operator is always removed, which is a trigger for assembling the safety fence. Therefore, it is possible to eliminate the possibility of working without forgetting to raise the safety fence. FIG. 2 is a perspective view showing an elevator cage according to a second embodiment of the present invention. For details, Fig. 2a shows the maintenance of the elevator cage according to the second embodiment.

FIG. 2B is a perspective view showing a state at the time of inspection, and FIG. 2B is a perspective view showing a normal state of the elevator car according to the second embodiment.

The second embodiment is different from the first embodiment mainly in the configuration of the support member 9. That is, as shown in FIGS. 2A and 2B, a stopper 9a is provided at the center of the column member 9. The stopper 9a is formed by bending a part of the support member 9 so as to be substantially perpendicular to the bending source. Then, as shown in FIG. 2B, the stopper 9a limits the rotation angle when the handrail member 7 is rotated and tilted.

The fixing member 8 is fastened to the handrail member 7 as shown in FIG. 2a during maintenance and inspection, and is normally stored at a predetermined position on the cage upper part 1a as shown in FIG. 2b. Reference numeral 14 denotes a band for binding, which is a member for folding both handrail members 7 and then binding them. As a result, both handrail members 7 are securely fixed so as to cover the entrance after being folded.

Further, the configuration and operation of the other members are the same as those in the first embodiment.

As described above, both the handrail members 7 are folded so as to prevent a worker from getting into the upper part 1a of the cage during normal times other than maintenance and inspection. In other words, the folded handrail member 7 blocks the worker from entering and leaving the working space. As a result, when the operator starts maintenance and inspection, the handrail member 7 in front of the worker is always raised, which is a trigger for assembling the safety fence. Therefore, it is possible to eliminate the possibility of working without forgetting to raise the safety fence. FIG. 3 is a perspective view showing an elevator cage according to a third embodiment of the present invention. For details, Fig. 3a shows the maintenance of the elevator cage according to the third embodiment.

FIG. 3B is a perspective view showing a state at the time of inspection, and FIG. 3B is a perspective view showing a normal state of the elevator cage according to the third embodiment. The third embodiment is different from the second embodiment mainly in the configuration of the handrail member 7 and the support member 9. That is, as shown in FIGS. 3A and 3B, a member corresponding to the stopper 9a in FIG. 2 is not provided at the center of the support member 9. Therefore, when the handrail member 7 is rotated and lowered, the rotation stops in a state where the tip of the handrail member 7 contacts the cage upper part 1a. Then, as shown in FIG. 3B, the folded handrail member 7 blocks the entry of the worker into the working space.

Further, a stay 10 is joined to the handrail member 7 by welding or the like substantially in parallel with the handrail portion. As a result, as shown in FIG. 3B, when the handrail member 7 is depressed, the foothold of the worker is closed. That is, the handrail member 7 having the stay 10 covers the cage upper part 1a and seals the work space in the cage upper part 1a.

As described above, during normal times other than during maintenance and inspection, the upper part of the operator's cage la The handrail member 7 is folded so as to prevent the handrail member 7 from climbing in, and a step 10 is provided so that the foothold of the worker is not secured. Workers can be reliably prevented from working on the upper part 1a of the cage. Therefore, it is possible to eliminate the possibility of working without forgetting to raise the safety fence.

FIG. 4 is a perspective view showing an elevator cage according to a fourth embodiment of the present invention. More specifically, FIG. 4A shows the maintenance of the elevator cage according to the fourth embodiment.

FIG. 4B is a perspective view showing a state at the time of inspection, and FIG. 4B is a perspective view showing a state of the elevator car according to the fourth embodiment in a normal state. The fourth embodiment mainly differs from the second embodiment in the configuration of the handrail member 7 and the support member 9. That is, as shown in FIGS. 4A and 4B, a member corresponding to the stopper 9a in FIG. 2 is not provided at the center of the support member 9. The handrail member 7 is rotatably connected to the support member 9 so as to overlap the support member 9.

Specifically, the handrail member 7 has a screw fastening hole at an end portion into which the stepped screw 11 is inserted. On the other hand, the column members 9 are fixed to the respective corners of the cage upper part 1a by welding or the like. Further, the column member 9 has an internal thread at the end to which the stepped screw 11 is attached. Then, the handrail member 7 is rotatably coupled to the support member 9 with the stepped screw 11.

When the maintenance and inspection of the safety fence configured as described above is completed, the fixing member 8 fastened to the handrail member 7 is first removed by the operator from the maintenance and inspection state shown in FIG. It is stored in a predetermined position in the upper part 1a of the cage. Next, the operator descends from the elevator cage 1 while tilting the manual member 7 in the direction of the arrow in FIG.

Here, in the fourth embodiment, there is no member corresponding to the stopper 9a in FIG. However, as shown in Fig. 4b, when the handrail member 7 is rotated and tilted down, the end of the support member 7 comes into contact with a part of the inner wall of the handrail member 7, so that the handrail member 7 rotates further. Stop at that position without doing it. The tip shape of the support member 7 has been changed. By doing so, the rotatable angle of the handrail member 7 can be set arbitrarily to some extent.

As described above, at normal times other than maintenance and inspection, the handrail member 7 is folded so as to prevent a worker from getting into the upper part l a of the cage. That is, the handrail member 7 that has been fallen closes out of the working space. As a result, when the operator starts maintenance and inspection, he or she always raises the handrail member 7 in front of the operator, which is a trigger for assembling the safety fence. Therefore, it is possible to eliminate the possibility of working with the safety fence forgotten. Industrial applicability

As described above, the elevator cage according to the present invention is provided with a detachable fixing member on the safety fence assembled at the top of the cage, and moves the fixing member to the top of the cage when the safety fence is lowered. It is fixed so as to prevent the passenger from getting on. As a result, when performing maintenance and inspection, the worker removes the fixing member to get on the upper part of the cage and does not forget to assemble the safety fence using the fixing member. This is useful as an elevator cage that can prevent workers from falling during inspection. Further, the elevator cage according to the present invention is provided with a support member and a handrail member on a safety fence assembled at an upper part of the cage, the handrail member is rotatably joined to the support member, and the handrail member is tilted. It is formed so as to prevent entry into the top of the cage. As a result, when performing maintenance and inspection, workers must raise the handrail member to get on the cage and remember to assemble the safety fence. It is useful as an elevator cage that can prevent bleeding. Further, the elevator cage according to the present invention is provided with a stopper on the support member for limiting the rotation angle of the collapsible handrail member. With this, the handrail member can be moved to any position except during maintenance and inspection, to prevent workers from climbing into the upper part of the cage and to prevent workers from falling during maintenance and inspection. Elevator that can be useful as a cage overnight.

The elevator cage according to the present invention is formed such that the handrail member covers the upper part of the cage when the handrail member is tilted down. By this, handrail When the members are down, the scaffolding of the worker is not secured, and the safety fence must be reassembled at the start of maintenance and inspection.Therefore, prevent the worker from falling during maintenance and inspection. It is useful as an elevator car that can be operated.

Further, the elevator apparatus according to the present invention is provided with an elevator cage having a member for preventing entry into the upper part of the cage when a safety fence provided on the upper part of the cage is defeated. This reduces the risk of forgetting to raise the safety fence at the start of maintenance and inspection, and is therefore useful as an elevator that can prevent workers from falling during maintenance and inspection.

Claims

The scope of the claims

1. An elevator equipped with a retractable safety fence at the top of the cage that can be entered from the entrance,

The safety fence includes an insertable / removable fixing member for fixing the safety fence so as not to fall when the safety fence is raised.

The elevator cage, wherein the fixing member is fixed in a frontage direction of the entrance when the safety fence is lowered.

2. An elevator equipped with a retractable safety fence at the top of the cage that can be entered from the entrance,

The safety fence includes a support member fixedly provided on the upper part of the cage, and a handrail member rotatably joined to the support member,

The elevator as claimed in claim 1, wherein the handrail member is formed so as to close the entrance when the handrail member is tilted.

3. The elevator cage according to claim 2, wherein the support member includes a stopper for limiting a rotation angle of the rotatable handrail member.

4. The elevator mushroom according to claim 2, wherein the handrail member is formed so as to cover an upper part of the cage when the handrail member is turned down.

-Shi.

5. An elevator apparatus comprising the elevator cage according to any one of claims 1 to 4.