阅读说明：本技术 引导装置、以及使用该引导装置的载人载货用电梯 (Guide device and manned cargo elevator using the same ) 是由 铃木隆裕 川端亮平 岛田胜博 于 2021-04-15 设计创作，主要内容包括：本发明的目的在于提供引导装置、以及使用该引导装置的载人载货用电梯,在载人载货用电梯的电梯轿厢设置,并且即使反复进行重的货物的搬入搬出,也能够抑制导轨的损伤。引导装置设置于电梯轿厢的上表面和下表面,该电梯轿厢沿着在升降通路的左右设置的一对导轨升降,其特征在于,具备：辊,其在正常升降时以及货物的搬入搬出时与所述导轨接触；载荷承受部,其在正常升降时不与所述导轨接触,而在搬入搬出时与所述导轨接触；脱落防止件,其在正常升降时以及搬入搬出时不与所述导轨接触,而在紧急时与所述导轨接触；以及基座构件,其供所述辊、所述载荷承受部以及所述脱落防止件安装,所述载荷承受部的摩擦阻力比所述脱落防止件的摩擦阻力小。(The invention aims to provide a guide device and a passenger and freight elevator using the same, wherein the guide device is arranged in an elevator car of the passenger and freight elevator, and can prevent a guide rail from being damaged even if heavy cargos are repeatedly carried in and carried out. The guide device is provided on the upper surface and the lower surface of an elevator car that moves up and down along a pair of guide rails provided on the left and right of a hoistway, and is characterized by comprising: a roller which is in contact with the guide rail during normal lifting and during loading and unloading of goods; a load receiving part which does not contact with the guide rail during normal lifting and contacts with the guide rail during carrying in and carrying out; a falling-off preventing member which does not contact with the guide rail during normal lifting and carrying in and out and contacts with the guide rail in emergency; and a base member to which the roller, the load receiving portion, and the drop-off preventing member are attached, the frictional resistance of the load receiving portion being smaller than the frictional resistance of the drop-off preventing member.)

1. A guide device provided on an upper surface and a lower surface of an elevator car that ascends and descends along a pair of guide rails provided on left and right sides of a hoistway,

the guide device is provided with:

a roller which is in contact with the guide rail during normal lifting and during loading and unloading of goods;

a load receiving part which does not contact with the guide rail during normal lifting and contacts with the guide rail during carrying in and carrying out;

a falling-off preventing member which does not contact with the guide rail during normal lifting and carrying in and out and contacts with the guide rail in emergency; and

a base member to which the roller, the load receiving section, and the drop-off preventing member are attached,

the frictional resistance of the load receiving portion is smaller than the frictional resistance of the drop prevention member.

2. Guide device according to claim 1,

dimension W of clearance between the falling-off preventive member and the guide rail in design during normal lifting₂A dimension W of a design clearance between the load receiving part and the guide rail in normal lifting₃Is large.

3. Guide device according to claim 1,

the guide device satisfies the following mathematical formula:

(math formula 1)

Wherein the content of the first and second substances,

l is the distance of the guiding means of the upper surface from the guiding means of the lower surface,

H₁is the distance from the lower end of the guide to the axis of rotation of the roller,

H₂is the distance from the lower end of the guide to the drop-off preventing member,

H₃is the distance from the lower end of the guide device to the upper end of the load-receiving part,

W₁is the maximum deflection of the roll in design,

W₂is a clearance between the falling-off preventing part and the guide rail in design during normal lifting,

W₃the clearance between the load receiving part and the guide rail in design during normal lifting.

4. An elevator for carrying people and goods, which is characterized in that,

the elevator for carrying people or goods is provided with the guide device of any one of claims 1 to 3 on the upper surface and the lower surface of the elevator car.

Technical Field

The present invention relates to a guide device and a man-carrying cargo elevator using the same.

Background

As a conventional guide device (guide device) for an elevator, patent document 1 discloses a guide device for an elevator, which includes: a guide rail; an elevator car that ascends and descends along the guide rail; a hoisting device hoisting the elevator car at a position offset from a position of a center of gravity of the elevator car; and a guide device provided in the elevator car and engaged with the guide rail to prevent the elevator car from falling down, wherein the guide device is provided side by side with: a movable guide roller that is constantly pressed against the guide rail by a predetermined pressure; and a movable guide shoe that is constantly pressed against the guide rail from the same side as the movable guide roller by a predetermined pressure, and the movable guide roller and the movable guide shoe share and receive a tilting load of the elevator car.

In addition, the following is described in "summary of the invention" of this document: the device is configured to be provided side by side: a movable guide roller which is pressed against the guide rail by a predetermined pressure at all times; and a movable guide shoe which is pressed against the guide rail at a predetermined pressure at all times, and which receives the load of the elevator car falling at all times while sharing the load therebetween.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 61-206779

Fig. 5 is a schematic view of the elevator for carrying passengers and goods, in which 1 is an elevator car that ascends and descends in an elevator shaft, 2u is a pair of guide devices provided at the left and right ends of the upper surface of the elevator car 1, 2b is a pair of guide devices provided at the left and right ends of the lower surface of the elevator car 1, 3 is a pair of guide rails provided at the left and right sides of the elevator shaft, and 4 is heavy goods such as automobiles mounted on the elevator car 1. In such a man-carrying elevator, since the elevator car 1 is raised and lowered along the guide rails 3 by the guide devices 2u and 2b, vibration during raising and lowering of the elevator car 1 can be suppressed to an appropriate level. In the following, each direction of the front, rear, upper, and lower directions is defined as illustrated, and the right direction is defined as the far side of the paper surface and the left direction is defined as the near side of the paper surface.

On the other hand, fig. 6 is a schematic diagram of a man-carrying cargo elevator for carrying in and out the cargo 4, and fig. 5 is an elevator hall. When heavy loads 4 are carried into the elevator car 1 from the elevator hall 5 or when heavy loads 4 are carried out from the elevator car 1 to the elevator hall 5, the upper and lower guide devices 2u and 2b apply a load to the guide rail 3 in a manner different from that during lifting because the elevator car 1 is inclined forward.

In the guide device (guide device) of patent document 1, as disclosed in the "summary of the invention", fig. 2, and the like, the tilting load of the elevator car is shared and received by both the movable guide roller and the movable guide shoe, but the guide device is not configured to correspond to the carrying in and out of heavy loads such as an automobile. Therefore, when the tilting load of the elevator car exceeds the support limit of the built-in spring of the movable guide roller or the movable guide shoe, a high-strength member such as a drop preventer other than the guide roller or the guide shoe may contact the guide rail. When the inclination of the elevator car changes while the guide rail and the high-strength member are in contact with each other, the high-strength member causes friction on the guide rail. As a result, if wear associated with the loading and unloading of the load is repeatedly generated, the guide device may damage the guide rail to a large extent.

Disclosure of Invention

Problems to be solved by the invention

Therefore, an object of the present invention is to provide a guide device provided in an elevator car of a man-carrying or freight-carrying elevator, which can suppress damage to a guide rail even when carrying in and carrying out of heavy loads is repeated.

Means for solving the problems

In order to solve the above problem, a guide device according to the present invention is a guide device provided on an upper surface and a lower surface of an elevator car that moves up and down along a pair of guide rails provided on left and right sides of a hoistway, the guide device including: a roller which is in contact with the guide rail during normal lifting and during loading and unloading of goods; a load receiving part which does not contact with the guide rail during normal lifting and contacts with the guide rail during carrying in and carrying out; a falling-off preventing member which does not contact with the guide rail during normal lifting and carrying in and out and contacts with the guide rail in emergency; and a base member to which the roller, the load receiving portion, and the drop-off preventing member are attached, the frictional resistance of the load receiving portion being smaller than the frictional resistance of the drop-off preventing member.

Effects of the invention

According to the guide device of the present invention, even when heavy loads are repeatedly carried in and out, damage to the guide rail can be suppressed.

Drawings

Fig. 1 is a perspective view of an upper guide 2u in embodiment 1.

Fig. 2 is a cross-sectional view illustrating a relationship between a guide device and a guide rail in lifting and lowering of an elevator car.

Fig. 3A is a sectional view of the guide device on the upper surface during carrying in and carrying out.

Fig. 3B is a sectional view of the guide device on the lower surface during carrying in and carrying out.

Fig. 4 is a perspective view of the upper guide 2u of embodiment 2.

Fig. 5 is a schematic diagram of the elevator for carrying a person or cargo in the up-and-down direction.

Fig. 6 is a schematic diagram of the loading and unloading operation of the passenger/cargo elevator.

Description of reference numerals:

1 Elevator cage

2u, 2b guide device

21 roller

22 base component

22a falling off preventive member

23 load receiving part

24 mounting plate

3 guide rail

4 goods

5 elevator lobbies.

Detailed Description

Hereinafter, an embodiment of the guide device of the present invention will be described with reference to the drawings.

[ example 1]

A guide device according to embodiment 1 of the present invention provided in an elevator car of the passenger/cargo elevator shown in fig. 5 and 6 will be described with reference to fig. 1 to 3B.

Fig. 1 is a perspective view of one guide device 2u provided on the upper surface of an elevator car 1. The guide device 2b provided on the lower surface of the elevator car 1 has the same configuration as the guide device 2u except that the guide device 2u is turned upside down, and the description of the guide device 2b will be omitted below in principle.

As shown in fig. 1, the guide device 2u includes a roller 21, a base member 22, a load receiving portion 23, an attachment plate 24, and the like.

The rollers 21 are provided at three positions so as to contact three surfaces of the guide rail 3, and the rollers 21 rotate while gripping the guide rail 3 from three sides when the elevator car 1 is lifted.

The base member 22 is a base material for mounting the rollers 21 and the like, and a high-strength fall-off preventing tool 22a is fixed to the upper end thereof, and the fall-off preventing tool 22a is used to reliably prevent an accident in which the elevator car 1 falls off from the guide rail 3 in an emergency such as an earthquake. In fig. 1, the drop-off preventing member 22a is a substantially H-shaped flat plate, but the drop-off preventing member 22a may have another shape as long as the above-described function is performed.

The load receiving portion 23 is a member having a substantially U-shaped cross section and fixed to a lower portion of the base member 22, and is formed of a resin material such as rare earth metal (rare earth metal) or polyurethane having a small frictional resistance. The load receiving portion 23 is designed not to contact the guide rail 3 during the lifting and lowering of the elevator car 1 (fig. 5), but to contact the guide rail 3 during the loading and unloading of the load 4 (fig. 6).

The mounting plate 24 is a flat plate fixed to the lowermost portion of the base member 22, and is provided with a through hole for a bolt for fixing the guide device 2u to the upper surface of the elevator car 1.

Next, the relationship between the guide device 2u and the guide rail 3 during the lifting and lowering of the elevator car 1 will be described with reference to the cross-sectional view of fig. 2.

Fig. 2 (a) is a schematic cross-sectional view of the guide device 2u at the height of the rotation axis of the roller 21. At this height, the guide portion of the guide rail 3 is gripped by the three rollers 21 from three sides. To say thatObviously, the dimension W₁Is the maximum deflection amount in the design of the roller 21 in the front-rear direction.

Fig. 2 (b) is a schematic cross-sectional view of the guide device 2u at the height of the drop-off prevention piece 22 a. At this height, the guide portion of the guide rail 3 is spaced by a dimension W₂And is surrounded by the falling-off preventive member 22 a. The dimension W is₂The clearance between the drop-off preventing member 22a and the guide rail 3 in the front-rear direction is designed when the elevator car 1 is normally lifted.

Fig. 2 (c) is a schematic cross-sectional view of the guide device 2u at the height of the upper end of the load receiving portion 23. At this height, the guide portion of the guide rail 3 is spaced by a dimension W₃And is surrounded by the load receiving portion 23. The dimension W is₃Is a designed clearance between the load receiving portion 23 and the guide rail 3 in the front-rear direction when the elevator car 1 is normally lifted. As is clear from the figure, there is a dimension W₂Dimension W₃The relationship (2) of (c).

In the present embodiment, the upper and lower guide devices 2u and 2b are designed so that the falling off preventive piece 22a does not come into contact with the guide rail 3 even when the load 4 corresponding to the maximum load amount is carried into the elevator car 1 or the load 4 such as the load is carried out from the elevator car 1. Specifically, W in fig. 2 is set so as to satisfy the following equation 1₁、W₂、W₃。

[ mathematical formula 1]

L is a distance between the upper surface guide 2u and the lower surface guide 2b (see fig. 5).

H₁Is the distance from the lower end of the guide 2u to the rotation axis of the roller 21 (see fig. 1).

H₂Is the distance from the lower end of the guide device 2u to the drop-off preventing member 22a (see fig. 1).

H₃Is a distance from the lower end of the guide device 2u to the upper end of the load receiving portion 23 (see fig. 1).

Next, the relationship between the guide devices 2u and 2B designed according to equation 1 and the guide rail 3 when the load 4 is carried in and out will be described with reference to fig. 3A and 3B.

Fig. 3A shows a relationship between the guide device 2u on the upper surface and the guide rail 3 when the load 4 is carried in and out. As is clear from fig. 6, when the load 4 is carried in and out, the guide device 2u moves to a position ahead of the reference position. And, as shown in (c) of FIG. 3A_u) As shown, the inclination of the elevator car 1 is stopped in a state where the load receiving portion 23 of the guide device 2u is in contact with the rear surface of the guide rail 3. On the other hand, as shown in (b) of FIG. 3A_u) As shown, even if the inclination of the elevator car 1 stops, the falling prevention piece 22a of the guide device 2u does not contact the guide rail 3.

Fig. 3B shows a relationship between the guide device 2B on the lower surface and the guide rail 3 when the load 4 is carried in and out. As is clear from fig. 6, when the load 4 is carried in and out, the guide device 2b moves to a position behind the reference position. And, as shown in (c) of FIG. 3B_b) As shown, the inclination of the elevator car 1 is stopped in a state where the load receiving portion 23 of the guide device 2b is in contact with the front surface of the guide rail 3. On the other hand, as shown in (B) of FIG. 3B_b) As shown, even if the inclination of the elevator car 1 stops, the falling prevention piece 22a of the guide device 2b does not contact the guide rail 3.

In this way, even in any of the upper and lower guide devices, the tilting load of the elevator car 1 can be supported by the rotatable roller 21 and the load receiving portion 23 having a small frictional resistance at the time of carrying in and out the load 4, and therefore the guide rail 3 does not come into contact with the falling-off preventive member 22 a. Therefore, even when the inclination of the elevator car 1 is repeatedly changed in accordance with the loading and unloading of the load 4, the damage of the guide rail 3 due to the high-strength falling preventive piece 22a can be avoided.

As described above, according to the guide device of the present embodiment, even when heavy loads are repeatedly carried in and out, damage to the guide rail can be suppressed.

[ example 2]

Next, a guide device according to embodiment 2 of the present invention will be described with reference to fig. 4. The description overlapping with the description of embodiment 1 is omitted.

In embodiment 1, as shown in fig. 1, the guide rail 3 is held by a set of rollers 21 arranged at the same height. In the present embodiment, a plurality of sets of rollers 21 are used in order to further increase the maximum load capacity of the passenger-cargo elevator.

Fig. 4 shows an example of a guide device 2u according to embodiment 2. In the case of using the guide device 2u provided with the two sets of rollers 21, a larger tilting load can be borne by the plurality of rollers 21, and therefore, even when a load heavier than the load 4 of example 1 is carried in and carried out, damage to the guide rail can be suppressed.