JP3468316B2 - Lift car - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
A lift car that is related to a lift car towed by two wire ropes, and in particular, an equalizer that absorbs the difference in length that occurs between two wire ropes and a brake that softly operates when the two wire ropes are cut. Regarding

[0002]

2. Description of the Related Art Lift cars are sometimes provided for transporting personnel on slopes such as golf courses and parks, but most of them are run by wire ropes. In this case, two wire ropes are used on the left and right in consideration of safety. Two
If the lengths of the wire ropes of the book are different, a force is applied to the shorter one, so that an equalizer is used to equalize the lengths.

FIG. 12 shows a conventional equalizer. The wire ropes 3 are connected to both ends of the lever 60 via pulleys, and the center of the lever 60 is connected to a support bar 62 by a pin 61. If the lengths of the wire ropes 3 are equal, the lever 60 is orthogonal to the support bar 62, and the tension T acts on each wire rope 3. Here, for example, when the lower wire rope 3 becomes longer, the lever 60 inclines as indicated by the chain line in the figure, and the tension T of each wire rope 3 becomes equal.

[0004]

Conventionally, when setting the trajectory of a lift car, a starting point and an ending point are connected by a straight line, and if there is a valley between them, a bridge is built. However, there are many cases where it is not necessary to build a bridge with a slight detour, and in such cases, curved rails are adopted. When straight lines and curved lines are mixed in the rails, and when curved lines having different curvatures are mixed, the difference in length between two wire ropes is considerably larger than that in the case of only straight lines.
The equalizer shown in cannot absorb the difference in length.
In addition, since the difference in length is absorbed by the inclination of the lever, the inclination becomes large as the difference becomes large, which gives a visually unstable feeling.

Further, such a lift car is provided with an emergency brake so that it is safe even if both wire ropes are cut. As an emergency brake, a method is used in which a wedge is inserted between the rail and the bogie and the action of the wedge causes a rapid stop. However, in the case of a wedge, it works abruptly, so there is a problem that it gives a large impact to the occupant of the lift car.

The present invention has been made in view of the above problems, and is provided with an equalizer for a tow rope which can absorb a large difference in length and has a stable appearance, and a wire rope to be towed is cut. The purpose of the present invention is to provide a lift car having a brake that gently brakes.

[0007]

In order to achieve the above object, a lift car of the present invention comprises a trolley (2b) traveling on an inclined rail (1) and a trolley (2b) for towing the trolley (2b).
Equalizer (4) that makes the ropes (3) of the book equal in length
And the rope provided on both sides of the equalizer (4)
Stopper (2) that restrains the movement of (3) in the tension direction.
4) and the equalizer (4) to the tension of the rope (3).
Movably mounted with a spring biased in the opposite direction
An equalizer mounted device that is, two of the ropes (3)
A movement detecting means for detecting the relative movement of the equalizer at the time of cutting (4) and the carriage (2b), before and Kusabi受provided on the carriage (2b) by the movement detection of said movement detecting means
Brake control by inserting a wedge between the serial rail (1
0) and the equalizer (4) has an axial direction intersecting the direction of the rope (3) and is rotatably supported by a drum.
Includes a (6), one of the rope wraps as view axis to the left in the drum (6), the tip is secured to the drum (6), the axis on the other rope the drum (6) The winding tip is fixed to the drum (6) so that the mind is seen to the right, and the brake (10) is connected to the rail (1).
Movable along the side surface of the rail, and the contact surface with the rail (1)
The back surface of the wedge is inclined with respect to the side surface of the rail (1)
(35) and an inclined surface having the same inclination as the inclined surface of the wedge (35)
A wedge receiver (32) for restraining the wedge (35),
The wedge receiver (32) is supported so as to be movable in the direction perpendicular to the rail.
Wedge receiving frame (31), the wedge receiving frame (31) and the wedge receiving (3
2) is installed between the rail (1) and the rail
Press against movement away from the rail (1)
And an elastic body that generates force.

Further, the equalizer (4) is composed of two sheaves (20, 2 ) which are rotatably supported as an integral unit by stacking them.
0) , one rope is wrapped around one sheave so that the shaft center is seen to the left, and the tip of the rope is fixed to one sheave, and the other rope is seen so that the shaft center is seen to the right on the other sheave. The winding tip is fixed to the other sheave.

[0009]

[0010]

[0011]

The lift car of the present invention is towed by two ropes and is provided with an equalizer so that the lengths of the ropes are equal. When the two ropes are cut, the equalizer and the carriage move relative to each other. , This movement is detected by the movement detection means,
The brake is configured to operate. The operation of the equalizer and the brake will be described below.

FIG. 1 shows the principle of the equalizer used in claims 1 and 2, and FIG. 2 shows its function. In FIG. 1, a cylinder 6 has a bearing portion 8 by a shaft 7 provided at the center of the shaft.
It is rotatably supported by. One of the wire ropes 3 is wound around a cylinder 6 so that its axial center is viewed to the left, and its tip is fixed to the cylinder 6. The other wire rope 3 is wound around a cylinder 6 so that its axial center is seen to the right, and its tip is fixed to the cylinder 6. (A) shows this state, (b), (c)
Shows the winding state of each wire rope 3. Here, when one of the wire ropes 3 becomes longer, the tension T thereof relaxes, the tension T of the other wire rope 3 causes the cylinder 6 to rotate, and the one wire rope 3 is caught and shortened, and the other wire rope 3 is wound. It is served and becomes longer. As a result, both lengths become the same and the tension T becomes equal.

FIG. 2 shows the operation of the equalizer shown in FIG. The recovery function when one of the wire ropes 3 becomes long and the tension T is loosened is the same as in FIG.
Rotates to unwind the shorter wire rope 3 to balance the length and the tension T. However, in FIG. 2A, if any of the wire ropes 3 is cut, both of them will come off and lose the restraining force. FIG. 2B shows the function in terms of strength. Each wire rope 3 is fixed to a cylinder 6, and even if one is cut, the other is joined to the cylinder 6. Thus, the equalizer of the present invention is shown in FIG.
It also has the function of (b). Further, the difference in the length of absorption depends on the amount of winding around the cylinder 6, and a large difference can be absorbed by increasing the amount of winding. Figure 1 is 3 /
It shows a state in which it is wound four times, but it is possible to wind more than this. Further, since the difference in length is absorbed, the appearance is the same even if the column 6 rotates, so that there is no anxiety. The equalizer according to claim 1 uses the equalizer shown in FIG.

Even if the two sheaves are overlapped and integrated and the above-mentioned cylinder 6 is replaced, the same operation is performed. However, since the wire rope 3 can be wound only one turn or less on each sheave, the absorbing capacity is reduced, but the decrease can be prevented by increasing the diameter of the sheave. The equalizer according to a second aspect of the present invention is formed by stacking two sheaves.

The brake used in the inventions of claims 1 and 2 operates when the two ropes attached to the equalizer are disconnected. First, the wedge moves along the rail, enters the space between the rail and the wedge bridge, and becomes integral with the wedge bridge. A frictional force is generated on the contact surface between the rail and the wedge bridge, and a braking force acts on the carriage via the wedge bridge. . The contact surface of the wedge receiver with the wedge is inclined, and when the wedge enters the rail direction, the wedge receiver receives a force fv in a direction perpendicular to the rail direction and away from the rail. Μ · fv obtained by multiplying this force fv by the friction coefficient μ is the frictional force generated between the rail and the wedge. The wedge receiver tries to move in the direction of the force fv in the wedge receiving frame by this force fv, but there is an elastic body between the wedge receiving frame and the wedge receiving frame fixed to the wedge carriage, and the pressing force generated by the deformation of the elastic body. And force fv are balanced. That is, when the wedge enters between the rail and the wedge receiver, the elastic body is pressed and deformed, and the repulsive force generates a frictional force between the rail and the wedge, but the elastic body is deformed in the rail direction. Since the friction force increases with the approach, the friction force also increases with the approach of the wedge. As a result, the braking force generated on the trolley by the wedge is gently generated according to the deformation of the elastic body, and the impact force at the time of brake operation is relaxed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 3 shows the entire equipment of the lift car in which the present embodiment is used. (A) shows a plan view and (b) shows a side view. Rail 1 consisting of a straight line and a curved line between two points A and B
Is laid, and the lift car 2 travels along the rail 1. Two tow wire ropes 3 are stretched along the rail 1 and connected to the lift car 2 via an equalizer 4. A guide roller 5 is provided so that the wire rope 3 can be stretched along the rail 1. The lift car 2 is composed of a carriage 2b and a passenger compartment 2a mounted on the carriage 2b. The rail 1 is made of I-shaped steel.

4 and 5 show details of the trolley, and FIG.
(A) is a plan view of the truck, (b) is a side view, and FIG. 5 is a view taken along the line XX in FIG. 4 (a). Trolley 2b is rail 1
The main structure is two girders 11 provided at the same intervals as the width and the floor 12 connecting them. A pedestal 13 that supports the passenger compartment 2a is provided on the floor 12, and an opening 14 is provided for attaching the equalizer 4 and for inspection. Wheels 15 are provided at both ends of each girder 11 so that the carriage 2b can travel. At the mounting position of each wheel 15, a guide wheel 16 is mounted on the outer side of the rail 1 perpendicularly to the I-shaped steel web forming the rail 1 to prevent the wheel 15 from coming off the rail 1. Emergency brake 1 on the left and right of the truck 2b
0 is provided, and when the two wire ropes 3 are both cut, the carriage 2b is safely braked and stopped. The emergency brake 10 is provided on the upper surface of the rail 1 and is fixed to a support member 17 provided on the girder 11. The emergency brake 10 is
Equalizer 4 generated when two wire ropes 3 are cut
It operates by relative movement between the carriage 2b and the carriage 2b. A movement detector 9 for detecting this relative movement is provided on the carriage 2b between the equalizer 4 and the emergency brake 10. A guide sheave 18 that guides the two wire ropes 3 to be hung on the equalizer 4 is provided at the position of the wheel 15 on the wire rope 3 side.

6A and 6B are views showing the structure of the equalizer 4 and its attachment to the carriage 2b. FIG. 6A is a plan view and FIG. 6B is a side view. The equalizer 4 is rotatably supported by a casing 21 so that the two sheaves 20 are overlapped and integrally rotated, and is connected to the carriage 2b via two stoppers 24 provided on the side surface of the opening 14 of the floor 12. Rear of the equalizer 4 (the wire rope 3 side is the front and the opposite side is the rear)
A spring 22 is provided at the one end, and is connected to the equalizer 4 at one end and to the floor 12 at the other end to urge the equalizer 4 to move rearward. The spring 22 constitutes a safety device, and when the two wire ropes 3 are both cut, the spring 22 contracts and the equalizer 4 moves rearward. The indicator rod 25 provided on the casing 21 is the carriage 2b.
And the relative movement between the equalizer 4 and the equalizer 4 is extracted.

FIG. 7 is a view showing a method of fixing the winding range of the sheave 20 and the tip of the wire rope 3 to the sheave 20. The wire rope 3 can be wound around 3/4 of the outer circumference of the sheave 20, that is, in the range of 270 °, and the remaining 1
In the range of / 4, that is, 90 °, the wire rope end stopper 23 is provided.

The operation of this equalizer is similar to that described with reference to FIGS. 1 and 2. When one wire rope 3 is loosened, the tension T of the other wire rope 3 causes the two sheaves 20 to rotate integrally. , One loosened wire rope 3 is wound, and the other wire rope 3 is paid out to balance the length and tension of both wire ropes 3. That is, FIG.
As shown in (a), the two wire ropes 3 work as if they were connected to one and hung on one sheave, and give the viewer a sense of security without feeling any difference in length. Moreover, since the tip of each wire rope 3 is fixed to the respective sheave 20, even if one wire is cut, the other one backs up.

FIG. 8 shows the structure of the emergency brake, (a)
Shows a plan view and (b) shows a side view. FIG. 9 is a view taken along the line YY of FIG. Emergency brake 10 is rail 1 I
The wedge is pressed against the upper plate of the shaped steel to perform braking action by the frictional force generated. Emergency brake 10 is a truck 2b
A wedge receiving frame 31 is fixed to a supporting member 17 provided on the garter 11. The wedge receiving frame 31 is a frame that guides the wedge receiving 32 having an inclined surface so as to move in a direction perpendicular to the rail 1 with respect to the length direction of the rail 1. Wedge receiver 32 and wedge receiver frame 31
Notches 31a and 32a are provided in the respective members between them, and urethane 33 is provided as an elastic material in the notches 31a and 32a. Urethane 33 is bolt 3
4 is fixed, and the bolt 34 is screwed into the screw hole of the wedge receiver 32. Since the bolt 34 only penetrates the bolt hole of the wedge receiving frame 31, it does not restrain the urethane 33 when it is compressed. Grease is applied to the contact surfaces of the wedge receiver 32 and the wedge receiver frame 31 so that the wedge receiver 32 moves smoothly in the direction perpendicular to the rail 1.

The wedge receiver 32 is inclined such that the gap with the rail 1 is narrowed as the wedge 35 moves to the right in FIG. The wedge 35 is arranged on this inclined surface, as shown in FIG.
Moves from the position of the wedge 35 shown by the solid line to the position of the wedge 35 shown by the broken line. The surface 35a of the wedge 35 that contacts the rail 1
Has a sawtooth shape, which reduces slippage with the rail 1 and increases braking force. Wedge receiver 32 of wedge 35
The surface 35b contacting with has the same inclination as the wedge receiver 32.

An end plate 36 is screwed to the left end surface of the wedge receiving frame 31 in FIG. 8, and the side plate 3 is perpendicular to the end plate 36.
7 and the top plate 38 are welded, and the intersection of the side plate 37 and the top plate 38 is also welded. A first bearing material 39 is provided at an end portion on the left side in FIG. 8 of the side plate 37, and a second bearing material 40 is provided at a central portion thereof, and a sliding shaft 41 is provided through the side plate 37 in parallel with the side plate 37. . At the left end of the sliding shaft 41, a restraint nut 42 is provided at a position extending from the first bearing material 39 by a stroke (that is, a stroke of the wedge 35) in which the sliding shaft 41 slides. Bent arm 43 is captive nut 42
Abuts and restrains its position. A spring retainer nut 44 is provided at the center of the sliding shaft 41, and a spring 45 is provided between the spring retainer nut 44 and the first bearing member 39. The sliding shaft 41 is biased to the right side in FIG. There is. A stroke restraint nut 46 is provided at the position of the sliding shaft 41 at a distance S on the left side of the second bearing member 40, and defines the stroke S of the wedge 35. A connecting rod 47 is provided between the right end of the sliding shaft 41 and the wedge 35 and is pin-connected to the sliding shaft 41 and the wedge 35, respectively. Accordingly, even if the sliding shaft 41 moves parallel to the side plate 37, the wedge 35 can move along the inclined surface of the wedge receiver 32.

FIG. 10 is a diagram for explaining the structure of the movement detector 9 for detecting the movement of the equalizer 4 when the wire rope is cut. The movement detector 9 is a simple device including a tube 50 and an inner cable 51 passing through the tube 50. One end of the tube 50 is fixed to the floor 12 of the carriage 2b with a metal fitting 52, and the other end is fixed to the emergency brake 10 with a metal fitting 53. To do. One end of the inner cable 51 is fixed to the indicator rod 25 of the equalizer 4 via the mounting bracket 54, and the other end is fixed to the arm 43 of the emergency brake 10.
It is fixed via a mounting bracket 55. As a result, when the equalizer 4 moves to the left as shown by the arrow, the inner cable 5
1 moves with respect to the tube 50, the arm 43 rotates as shown by the arrow, the tip of the arm 43 comes off the restraint nut 42, and the sliding shaft 41 slides in the direction of the arrow.

Next, the operation of the emergency brake will be described with reference to FIGS.
This will be described using 1. When the two wire ropes 3 applied to the equalizer 4 are cut, the arm 43 is rotated as described with reference to FIG.
1 is moved to the right in FIG. 8 by the spring 45. As a result, the wedge 35 also moves to the right along the inclined surface of the wedge receiver 32, is fitted between the rail 1 and the wedge receiver 32 at the position indicated by the broken line, and a frictional force is generated at the contact surface with the rail 1. , Trolley 2b
Transmits the braking force to.

FIG. 11 is a diagram for explaining the force applied to the wedge. When the wire rope 3 to be hung on the equalizer 4 is cut, the trolley 2b on the inclined rail 1 moves downward, but this is braked by the emergency brake 10. In FIG. 11, assuming that the right side is the upper side (top side) and the left side is the lower side (foot side), it is assumed that a force fh that acts to lower the truck 2b acts. Then, if the inclination angle of the wedge receiver 32 is α due to the wedge action on the inclined surface of the wedge receiver 32, then fh = fSIN α
The force fv orthogonal to fh is expressed by fv = fCOS α. This fv is orthogonal to the rail 1, and the wedge 3 is formed by this fv.
5 and the rail 1 have a frictional force μ · fv (where μ is a wedge 3
5 and rail 1 and friction coefficient) are generated. In order to suppress the descent of the truck 2b, this frictional force and fh need to be equal, so the following equation is established. fh = μ · fv (1)

When a force fv perpendicular to the rail 1 is generated, the reaction force fv from the rail 1 is fv as indicated by the broken line.
Join in the opposite direction. Then, the elastic urethane 33 is compressed and deformed, so that a gap is created between the wedge 35 and the wedge receiver 32, the wedge receiver 32 side (the trolley 2b side) is displaced downward, and the repulsive force of the urethane 33 finally becomes fv. When they are equal (1)
The formula is established, and the carriage 2b stops. In this way, the braking force is gently generated by the compression of the urethane 33, and finally the same braking force as the descent force of the truck 26 is generated and the truck 2b is stopped.

Although urethane is used as elasticity, other synthetic resins or springs may be used. In this case, the spring coefficient is determined by the magnitude of the generated braking force, the traveling distance from the generation of the braking force to the stop of the carriage 2b, the inclination angle α of the wedge receiver 32, and the like.

[0029]

As is clear from the above description, the lift car of the present invention has a greater rope length absorbing ability than the conventional equalizer, and does not give an unstable feeling to the eyes even when a large length is absorbed. Is equipped with. Further, when the two wires attached to the equalizer are cut, the emergency brake works gently and brakes and stops without giving a large impact.

[Brief description of drawings]

FIG. 1 is a diagram illustrating the principle of an equalizer of the present invention.

FIG. 2 is a diagram illustrating a function of the equalizer shown in FIG.

FIG. 3 is a diagram showing the entire equipment of the lift car of the present embodiment.

FIG. 4 shows a dolly of this embodiment, (a) is a plan view,
(B) is a side view.

5 is a view on arrow XX in FIG. 4 (a). FIG.

FIG. 6 shows a configuration of an equalizer, (a) is a plan view,
(B) is a side view.

FIG. 7 is a diagram showing a winding range of a sheave and a method of fixing a tip end of a wire rope.

FIG. 8 shows a configuration of an emergency brake, (a) is a plan view and (b) is a side view.

FIG. 9 is a view taken along the line YY of FIG. 8 (b).

FIG. 10 is a diagram showing a configuration of a movement detector that detects relative movement between an equalizer and a carriage.

FIG. 11 is a diagram illustrating a force applied to a wedge.

FIG. 12 is a diagram showing a conventional equalizer.

[Explanation of symbols]

1 rail 2 lift car 2a Guest room 2b trolley 3 wire rope (rope) 4 equalizer 5 Guide roller 6 cylinders (drums) 7 axes 8 bearing 9 Movement detector 10 Emergency brake 11 Gata 12 floors 13 mounts 14 openings 15 wheels 16 guide wheels 17 Support material 18 guide sheave 20 sheaves 21 casing 22 Spring (equalizer mounting device) 23 Wire rope end stopper 24 Stopper (equalizer mounting device) 25 pointer 31 wedge receiving frame 32 Wedge 33 Urethane (elastic body) 34 Volts 35 wedge 36 End plate 37 Side plate 38 Top plate 39 First bearing material 40 Second bearing material 41 Sliding shaft 42 Restraint nut 43 arms 44 Spring retainer nut 45 spring 46 Stroke Restraint Nut 47 connecting rod 50 tubes 51 Inner cable 52,53 metal fittings 54,55 Mounting bracket

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FI B66C 1/10 B66C 1/10 R (56) References JP-A-60-8150 (JP, A) Sankaihei 2-29869 ( JP, U) Actual public 39-20606 (JP, Y1) Actual public 48-17478 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) B61B 9/00

Claims (2)

(57) [Claims] 1. A trolley which travels on an inclined rail (1).
(2b) and two ropes tow the carriage (2b)
An equalizer (4) having the same length (3) and the rope (3) provided on both sides of the equalizer (4).
The stopper (24) and front that restrain the movement of the
Note Equalizer (4) in the opposite direction to the tension of the rope (3)
And Lee <br/> Equalizer mounting device movably attached to a biasing the spring direction, two of the ropes (3) the during cutting equalizer (4)
Insert and control the wedge between the movement detection means for detecting the relative movement of the carriage (2b), and Kusabi受and the rail provided on the carriage (2b) by the movement detection of said movement detecting means to a brake (10), said equalizer (4) is axially crosses the direction of the rope (3), comprising a rotatably supported drums (6), one of the rope the drum (6 ) the wraps so as to view the axis to the left, the tip is secured to the drum (6), the other rope tip wraps so as to view the axis to the right to the drum (6) the drum It is fixed to (6) and the brake (10) is located along the side surface of the rail (1).
Can be moved, and the back surface of the contact surface with the rail (1) is
Wedge (35) inclined to the side of the rail (1)
And an inclined surface having the same inclination as the inclined surface of the wedge (35),
A wedge bridge (32) for restraining the wedge (35), and the wedge bridge (3)
Wedge receiving frame that supports 2) movably in the direction perpendicular to the rail
(31) and the wedge receiving frame (31) and the wedge receiving (32)
The rail (1) provided between the rail and the rail
Generates pressing force against movement away from (1)
A lift car, comprising: 2. A dolly traveling on a slanted rail (1).
(2b) and two ropes tow the carriage (2b)
An equalizer (4) having the same length (3) and the rope (3) provided on both sides of the equalizer (4).
The stopper (24) and front that restrain the movement of the
Note Equalizer (4) in the opposite direction to the tension of the rope (3)
Movement detecting the relative movement between the Yi <br/> Equalizer mounting device movably attached to a biasing the spring in direction, and two ropes (3) the equalizer at the time of cutting (4) dolly comprising a detection means, a brake (10) for controlling by inserting a wedge between the bogie by moving the detection of said movement detecting means and the and Kusabi受provided (2b) rail (1), the equalizer (4) is provided with two sheaves (20, 20) that are rotatably supported as a single body in a stacked manner, and one rope has one sheave with one of the sheaves facing the shaft center to the left. Is fixed to the sheave of the other rope, the other rope is wound around the other sheave so that the shaft center is seen to the right, and the tip end is fixed to the other sheave. The brake (10) is attached to the side surface of the rail (1). Along
Can be moved, and the back surface of the contact surface with the rail (1) is
Wedge (35) inclined to the side of the rail (1)
And an inclined surface having the same inclination as the inclined surface of the wedge (35),
A wedge bridge (32) for restraining the wedge (35), and the wedge bridge (3)
Wedge receiving frame that supports 2) movably in the direction perpendicular to the rail
(31) and the wedge receiving frame (31) and the wedge receiving (32)
The rail (1) provided between the rail and the rail
Generates pressing force against movement away from (1)
A lift car characterized by having an elastic body .