JP2839872B2 - Rope elevator for shaft - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft type elevator for a shaft.

[0002]

2. Description of the Related Art A vertical shaft rope elevator is used in a vertical shaft construction or the like by lifting and lowering a lifting rope by means of a lifting means provided on an upper support stand installed on the ground, thereby lowering the hanging rope from the lifting rope. The basket is raised and lowered in a shaft to transport personnel and materials.

[0003] Conventionally, as this vertical shaft rope type elevator, there is one having a configuration shown in Figs. FIG.
4 is a front view, FIG. 15 is a side view, and FIG. 16 is a plan view. The elevator includes an upper support 1 installed on the ground G, a hoist W1 provided on the upper support 1 for winding and unwinding a lifting rope R1, a pulley 2 for suspending the rope R1, and a guide rope. Two hoisting machines W2 for winding and unwinding R2, two pulleys 3 for suspending the rope R2, and a hoisting rope which is arranged in a shaft H and supported by a hoisting rope R1 and supported by rotation of the hoisting machine W1. R1 is raised and lowered by winding and unreeling, and a basket 4 for transporting personnel materials guided by the guide rope R2 at the time of lifting and lowering, and a tension is given to the guide rope R2 by being suspended at the lower end of the guide rope R2. And a weight 5 for tensioning.

[0004] Both ends of the guide rope R2 are wound by two winders W2, and each of the winders W2 is wound.
2 are suspended by two pulleys 3 corresponding to the two pulleys, and a central portion of the suspended portion is wound around and supported by two pulleys 6 provided at the upper end of the weight 5. Thus, the weight 5 is lifted and lowered while being supported by the guide rope R2. In addition, the car 4 includes an insertion body 7 that is inserted into the guide rope R2 and moves up and down together with the car 4.

In the case of using the above-mentioned conventional shaft type elevator for shaft construction in the construction of a shaft, a hoisting machine W
With the rotation of 2, the guide rope R2 is paid out and the weight 5 is lowered to be suspended at a position where it does not reach the shaft bottom Ha of the shaft H. As a result, the guide rope R2 is tensioned by receiving the tension. Then, the elevator rope R1 is wound and fed out by the rotation of the hoisting machine W1, and the car 4 is raised and lowered. In this case, the car 4 moves up and down through the insertion body 5 using the guide rope R2 as a guide. The shaft H of the shaft H
Although not shown, a is provided with a lower enclosure surrounding the car 4 that has reached the pit bottom Ha.

[0006]

However, such a conventional vertical shaft rope elevator has several problems as described below. First, the weight E is the guide rope R2
Since tension is applied to the guide rope R2 suspended on the guide rope R2, when an external force acts on the guide rope R2, the swing of the guide rope R2 cannot be suppressed by itself, and the guide rope R2 swings with the guide rope R2. For this reason, if a force acts on the guide rope R2 from the car 4 while the car 4 is moving up and down, the weight 5 swings together with the guide rope R2. For this reason, the swing of the car 4 cannot be sufficiently suppressed by the combination of the guide rope R2 and the weight 5.
When the guide rope R2 extends for some reason and the weight 5 reaches the pit bottom Ha, the guide rope R2 becomes slack and loses tension, and cannot be used to suppress the swing of the car 4.

If the hoist W1 breaks down and the car 4 stops in a suspended state while the hoist W1 is driven to move the car 4 up and down, in order to rescue the personnel on the car 4, It is necessary to perform a large-scale operation using a large-scale facility separate from the elevator, which is very economical.

When the elevator is retracted from the shaft, it is necessary to disassemble the lower enclosure provided at the shaft bottom Ha of the shaft H and remove it from the shaft. The present invention has been made based on the above circumstances, and an object of the present invention is to provide a rope type elevator for a shaft which is excellent in reliability and safety.

[0009]

A rope type elevator for a shaft according to the present invention comprises: an upper support installed on the ground;
A first hoisting means provided on the upper support base for suspending and hoisting and unwinding the elevating rope, and a second hoisting means for suspending and winding and unwinding the guide rope; and A cage for transporting personnel materials guided by the guide rope during the ascent and descent of the lifting rope by being suspended and supported by the first hoisting means, A weight suspended from the lower end to tension the guide rope,
A lower enclosure which is arranged at the bottom of a shaft and integrally integrates the base, shock absorber, lower floor door and safety enclosure, and which is provided in the lower enclosure to support the weight so as to be able to ascend and descend, and to extend the guide rope. A guide rail having a height that allows the weight to descend and a stop member that restricts the weight from rising along the guide rail,
A weight detector for detecting that the guide rope is extended and the weight is lowered, and control means for receiving a signal from the weight detector and stopping driving of the first winding means. Features.

According to the structure of the present invention, the guide rope suspends and tensions the weight supported by the guide rail provided on the lower enclosure so as to be able to move up and down. The first hoisting means winds and unwinds the elevating rope, and moves the car up and down using the tensioned guiding rope as a guide.

Here, a weight for applying tension to the guide rope is supported by a guide rail provided in a lower enclosure so as to be able to move up and down. Therefore, the weight does not swing even if the guide rope receives a force from the car while the car is moving up and down, and the swing of the guide rope can be minimized. Therefore, the guide rope and the weight can be stably moved up and down while suppressing the swing of the car.

When the guide rope extends and the weight descends, the weight detector detects the descending of the weight during the descending before the weight reaches the bottom of the shaft. Then, the control means stops driving of the first hoisting means and stops raising and lowering the car. Thus, it is possible to prevent a situation in which the guide rope extends, the weight arrives at the bottom surface of the lower enclosure, the guide rope is loosened, and the car moves up and down while the guide rope is loosened, thereby causing a swing.

If it is desired to extend the lift of the elevator in accordance with the progress of the shaft construction, the guide rope is temporarily wound by the second hoisting means and the lower enclosure is stopped via the stop members of the left and right guide rails of the lower enclosure. Hoist. Thereafter, the shaft of the shaft is excavated, the guide rope is extended by the second hoisting means, and the lower enclosure is hung down.

If the elevator car and the lower enclosure are obstructed during blasting work or material loading during shaft construction, the elevator and the lower enclosure are raised to the ground by the first hoisting means and the second hoisting means. By doing so, the car and the lower enclosure can be easily and quickly retracted from the shaft. That is, the lower enclosure can be evacuated from the shaft without being dismantled. Thereafter, the upper support is retracted from the opening of the shaft. Thereby, all the devices in the elevator are retracted outside the shaft.

Further, when the car is stopped on the way up and down due to a failure of the first hoisting means or the like, and it is necessary to escape the personnel on board the car, the second hoisting means uses the guide rope. And raise the lower enclosure to just below the stopped cage. Then, the personnel in the car escape from the car to the lower enclosure.

Since the lower enclosure integrally includes the base, the shock absorber, the lower floor door and the safety enclosure, the lower enclosure comes into contact with the ground at the bottom of the pit with a large area, and the impact force when the car collides with the shock absorber is reduced. Since the base is dispersed and supported, a base can be formed even on soft ground, and personnel and materials can be transported directly to the downhole.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. 1 and 2 are a front view and a side view, respectively, showing the entire configuration of a shaft elevator for a shaft according to this embodiment. 11 in the figure
Is an upper support, 12 is a basket for transporting personnel materials, and 13 is a lower enclosure. G is the ground, H is the shaft, and Ha is the shaft bottom of the shaft. C is a control circuit as a control means.

FIGS. 3 and 4 show the first support means 11, the first hoisting means 14 for suspending and lifting and unwinding the elevating rope R1 mounted on the upper support stand 11, and the guide rope R2. 2 shows a second winding means 15 for winding and unwinding. FIG. 3A is a front view of the upper support 11, and FIG.
FIG. 4 is a plan view of the upper support 11.

The upper support base 11 includes a base 11a and an elevated section 11
b. The base 11a has wheels 21 and has a ground G
Can be run in a direction approaching and leaving the opening of the shaft H, and is normally stopped by the rail chuck 22 at a position close to the opening of the shaft H. On the base 11a, two hoisting ropes R1 are wound, and two hoisting machines W1 are connected to each other and rotate, and an electric motor M for rotating and driving the hoisting machine W1.
Hoisting machine W on which one or two guide ropes R2 are wound
2, an electric motor M2 for rotationally driving the hoist W2, a hoist W3 wound with a safety rope R3, and a ground floor door 11c are mounted. Reference numeral 23 denotes an emergency stop device provided between the motor M1 and the hoist W1, reference numeral 24 denotes a speed increasing gear, and reference numeral 25 denotes a motor M3 and the hoist W.
An emergency stop device 26 is provided between the control device 3 and the reference numeral 26, a speed increasing device 26 is also provided, and a manual handle 27 for manually rotating the electric motor M1 is provided.

In a portion of the elevated portion 11b projecting above the opening of the shaft H, two pulleys 28 around which two lifting ropes R1 are wound and suspended, and two guide ropes R2.
Are mounted, and a pulley 30 is mounted around which two pulleys 29 and a safety rope R3 are wound and suspended. The two pulleys 28 are connected to the car 12 such that the two lifting ropes R1 are connected by arranging the ceiling of the car 12 described later in the front-rear direction.
Are provided side by side in the front-rear direction.
The guide ropes R2 are provided side by side in the left-right direction of the car 12 so as to support the left and right sides of the car 12 described later.

In other words, the two lifting ropes R1 are suspended inside the shaft H by the pulley 28 in the front-rear direction of the car 12 (the hoistway of the car 12), and the two guiding ropes R2 are The pulley 29 causes the car 12 (car 1
A vertical shaft H is suspended inside the hoistway (2 hoistways).

The motor M1, the hoist W1, the safety device 23, the speed increasing device 24 and the pulley 28 constitute the first hoisting means 14, and the motor M2, the hoist W2 and the pulley 29 constitute the second hoisting means. 1
5.

FIGS. 5 and 6 show a car 1 for transporting personnel materials.
2 is shown. FIG. 5A is a front view of the car 12 and FIG.
(B) is a plan view. FIG. 6A is a side view of the car 12, and FIG. 6B is a cross-sectional view taken along line AA of FIG.

The car 12 carries and transports personnel materials. The car 12 has an entrance 12a and a door 31 for opening and closing the entrance 12a at the front, and a lid plate 32 for closing the exit 12b formed at the bottom. It is provided. Basket 12
Is suspended and supported by two lifting ropes R1 by a connecting member 33 provided side by side in the front-rear direction, and is supported by a safety rope R3 by a connecting member. That is, the lifting rope R1 suspends and supports the car 12 and moves it up and down. The safety rope R3 is for preventing the car 12 from dropping when the lifting rope R1 is cut.

A pair of rollers 35 are provided on the upper and lower sides of the left and right sides of the car 12 so as to make rotational contact with the guide rope R2 therebetween. The two guide ropes R2 are suspended on the left and right sides of the car 12 (the hoistway of the car 12). The pair of rollers 35 provided on the upper and lower portions of the left side of the car 12 are in rotational contact with one guide rope R2 therebetween, and the pair of rollers 35 provided on the upper and lower portions of the right side of the car 12 are the other. And makes rotational contact across the guide rope R2.

Note that a wall collision detecting device 36 is provided on one side of the car 12, for example, on the right side. If the car 12 shakes abnormally and comes into contact with the wall, the wall collision detection device 36 detects this and stops raising and lowering the car 12 until the swing of the car 12 stops. It is for doing.

FIG. 7 shows the lower enclosure 13. FIG.
(A) is a partially cutaway front view of the lower enclosure 14, and FIG. 7 (b) is a plan view. The lower enclosure 13 is arranged at the bottom of a shaft, and includes a base 41, a safety enclosure 42 installed on the base 41, a shock absorber 43 installed on the base 41, and a safety enclosure 4.
The lower floor door 44 and the lower door 44 provided at the entrance 42a formed in FIG. The safety enclosure 42 surrounds the surroundings when the car 12 arrives at the pit Ha, the shock absorber 43 absorbs the impact when the car 12 arrives at the pit Ha, and the lower floor door 44 is a car. It is provided to face 12 doors 31.

Guide rails 45 are provided on both left and right sides of the safety enclosure 42 along the vertical direction, and stop members 46 are provided at the upper ends of these two guide rails 45, respectively.
Is provided. In addition, weights 47 are respectively supported on the two guide rails 45 so as to be able to move up and down. The two guide ropes R2 support the left and right sides of the car 12 (the hoistway of the car 12), and further reach the left and right sides of the safety enclosure 42 in the lower enclosure 14 disposed on the pit bottom Ha. . The lower ends of the two guide ropes R2 are connected to a connecting tool 48 attached to the center of the lower end of each weight 47. That is, the weight 47 is hung by the guide rope R2 and applies tension to the guide rope R2 to make it tension.

Each guide rail 45 has a guide rope R2.
Has a height that allows the weight 47 to descend when it is extended, and a base 41 is provided at the lower end of each guide rail 45.
A weight detector 49 for detecting that the guide rope extends and the weight 47 is lowered is provided at a position located above the predetermined height from the (bottom surface of the lower enclosure 14). As the weight detector 49, for example, a microswitch is used, and when the weight 47 is lowered, the contact of the microswitch is closed, for example, and a signal is output by pressing the microswitch operator.

The control circuit C is shown in FIGS. The control circuit C controls the driving of each of the hoists W1 to W3, and receives a signal from the weight detector 49 to stop driving the hoist W1.

The operation of the elevator in this embodiment will be described. The case where the normal car 12 is raised and lowered will be described. 1 and 2 show the operation of raising and lowering the normal car 12. First, the winder W2 is driven to rotate by the electric motor M2 to wind or unwind the two guide ropes R2, and each weight 47 is attached to the lower enclosure 1.
The suspension length of each guide rope R2 is adjusted so as to be located at an intermediate position in the height direction of the guide rail 45 in 3. Thereby, each weight 47 is located between the stop member 46 and the weight detector 49, and each guide rope R
2 is tensioned by applying tension.

Then, the emergency stop device 2 is driven by the electric motor M1.
3 and the hoist M1 is rotated via the speed-increasing device 24 to take up each of the lifting ropes R1.
Pull up. As a result, the car 12 rises in the shaft H between the opening and the shaft bottom Ha. Further, the car 12 is hung by rotating the hoist M1 by the electric motor M1 and paying out the lifting ropes R1. As a result, the car 12 descends between the opening and the shaft bottom Ha in the shaft H.

Each guide rope R2 is tensioned by applying a tension by a weight 37. When the car 12 moves up and down the shaft H, the rollers 35 provided on the left and right sides of the car 12 come into rotational contact with each other via the guide ropes R2 suspended on the left and right sides of the car 12. For this reason, when the car 12 moves up and down, the guide rope R2 is used.
The swing is suppressed by being guided. Thus, the personnel and the materials can be mounted on the car 12 and safely transported between the shaft bottom Ha of the shaft H and the ground G.

The weight 47 for applying tension to the guide rope R2 is provided on the guide rail 4 provided on the lower enclosure 13.
5 is stably supported so as not to swing. For this reason, the guide rope R
The weight 47 does not swing even when the force 2 receives the force from the car 12, and the swing of the guide rope 12 can be minimized. Accordingly, the guide rope R2 and the weight 47 can be moved up and down stably while suppressing the swing of the car 12.

The lower enclosure 13 includes a base 41 and a shock absorber 4.
3. Since the lower floor door 44 and the safety enclosure 42 are integrated, they come into contact with the surface of the pit bottom Ha in a wide area, and the impact force when the car 12 collides with the shock absorber 43 is dispersed and supported. Therefore, the base 41 can be formed even on soft ground, and personnel and materials can be transported directly to the downhole Ha.

The base 41, the shock absorber 43, the lower floor door 44, and the safety enclosure 42 are integrally integrated into the lower enclosure 13, so that safety devices such as the shock absorber 43 can be securely installed even immediately after the elevator assembly and climbing. Can be activated. In addition, a hoistway enclosure is always formed at the bottom hole Ha by the lower enclosure 13, so that it is possible to reliably prevent personnel and obstacles from entering the elevator hoistway, and contact and collision between the car 12 and personnel and obstacles. Can be eliminated. In addition, elevator assembly, disassembly and climbing can be performed easily, safely and in a short time.

The guide rail 45 has a height that allows the weight 47 to descend when the guide rope R2 extends. For this reason, the weight 47 descends along the guide rail 45. Weight 47 is guide rail 4
5 descends, the weight 47 becomes the shaft bottom H of the shaft H
Before reaching weight a, each weight 47 is connected to each weight detector 4.
Hit 9 For this reason, each weight detector 49 operates to detect the lowering of the weight 47. Each weight detector 49
Outputs a signal to the control circuit C. Then, the control circuit C issues a command to stop the rotation of the motor M1, and stops the rotation of the hoist W1 by stopping the rotation of the motor M1. Therefore, the car 12 stops moving up and down. As a result, the guide rope R2 extends, the weight 47 arrives at the bottom surface of the lower enclosure 13, and the guide rope R2 is slackened.
It is possible to prevent a situation in which the car 12 moves up and down while the guide rope R2 is loosened, causing a run-out.
Then, the guide rope R2 is taken up by the hoist N2, the weight 47 is raised, and the weight detector 49
Away from

When it is desired to extend the lift of the elevator in accordance with the progress of the shaft construction, the guide rope R2 is once taken up by the hoist M2 and is stopped via the stop members 46 of the left and right guide rails 45 of the lower enclosure 13. The lower enclosure 13 is raised. Thereafter, the shaft bottom Ha of the shaft H is excavated, the guide rope R2 is fed out by the hoist M2, and the lower enclosure 13 is suspended.

The operation of retracting the entire elevator from the shaft when the blasting operation or the loading of materials in the shaft construction becomes an obstacle will be described. 8 to 10 show the operation of retracting the entire elevator from the shaft.

The hoist M1 is rotated by the electric motor M1 to wind up each of the elevating ropes R1 to raise the car 112 to the opening of the shaft H. Further, the hoist M2 is driven to rotate by the electric motor M2 to wind up each guide rope R2 and raise each weight 47. Then, each weight 47 rises along each of the guide rails 45 provided on the lower enclosure 13 and collides with a stop member 46 provided on the upper end of each guide rail 45 to restrict the rise. Further, when each of the guide ropes R2 is wound up, the weight 47 pushes up the stop member 46, so that each of the guide ropes R2
Raises the entire lower enclosure 13. In this way, the lower enclosure 46 is raised to the opening of the shaft H. Thereby, the car 12 and the lower enclosure 46 can be easily and quickly retreated from the shaft H. That is, the lower enclosure 46 can be evacuated from the shaft 1H without being dismantled. Further, the rail chuck 22 is released, and the upper support base 11 is caused to retreat along the rail R, so that all the devices in the elevator are retracted out of the shaft H.

Cage 1 due to a failure of the hoist, etc.
2 shows an operation of stopping the vehicle 2 in the middle of elevating and causing the personnel on the car 12 to escape. 11 to 1
3 shows an operation of escaping a person in the car.

The guide rope R2 is driven by the winding machine M2.
And raises the lower enclosure 13 to just below the stopped car 12. Then, a person boarding the car 12 raises the lid 32 provided on the car 12 to open the exit 31b, and escapes from the exit 31b to the lower enclosure 13. If the electric motor M2 cannot be used due to an electric failure such as a power failure, the electric motor M2 is rotated by the handwheel 27 provided on the electric motor M2 to rotate the hoisting machine N2, thereby raising and lowering the rope R2. And lowers the car 13 to the shaft bottom Ha of the shaft H. The present invention is not limited to the above-described embodiment, but can be implemented with various modifications.

[0043]

As described above, according to the elevator shaft type elevator according to the present invention, the guide rope is tensioned by suspending the weight supported by the guide rail provided in the lower enclosure so as to be able to move up and down. . As described above, the weight for applying tension to the guide rope is stably supported by the guide rail so as not to swing.
Therefore, the weight does not swing even if the guide rope receives a force from the car while the car is moving up and down, and the swing of the guide rope can be minimized. Therefore, the guide rope and the weight can be stably moved up and down while suppressing the swing of the car.

When the guide rope is extended and the weight is lowered, the weight detector detects the descent of the weight during the descent before the weight reaches the bottom of the shaft. Then, the control means stops driving of the first hoisting means and stops raising and lowering the car. Thus, it is possible to prevent a situation in which the guide rope extends, the weight arrives at the bottom surface of the lower enclosure, the guide rope is loosened, and the car moves up and down while the guide rope is loosened, thereby causing a swing.

Further. If the elevator car and the lower enclosure become obstacles during blasting work and material loading in shaft construction, the car and the lower enclosure are raised to the ground by the first hoisting means and the second hoisting means, The lower enclosure can be easily and quickly retracted from the shaft. That is, the lower enclosure can be evacuated from the shaft without being dismantled.

Further, when the car is stopped on the way up and down due to a failure of the first hoisting means or the like and it is necessary to escape the personnel on the car, the second hoisting means is used for guiding. By winding the rope and raising the lower enclosure to just below the stopped cage,
Personnel in the car can easily and quickly escape to the lower enclosure.

Further, since the base, the shock absorber, the lower door, and the safety enclosure are integrated into the lower enclosure, the lower enclosure comes into contact with the ground at the bottom of the pit in a wide area, and the impact when the car collides with the shock absorber. Since the force is dispersed and supported, the base can be formed on soft ground, and personnel and materials can be directly transported to the downhole.

[Brief description of the drawings]

FIG. 1 is a front view showing an elevator according to an embodiment of the present invention.

FIG. 2 is a side view showing the elevator of the embodiment.

FIG. 3 is a diagram showing an upper support provided in the elevator according to the embodiment.

FIG. 4 is an exemplary plan view showing an upper support provided in the elevator according to the embodiment;

FIG. 5 is a diagram showing a car provided in the elevator of the embodiment.

FIG. 6 is a diagram showing a car provided in the elevator of the embodiment.

FIG. 7 is a diagram showing a lower enclosure provided in the elevator of the embodiment.

FIG. 8 is an explanatory diagram showing an operation of retracting the elevator of the embodiment from the shaft.

FIG. 9 is an explanatory diagram showing an operation of retracting the elevator of the embodiment from the shaft.

FIG. 10 is an explanatory diagram showing an operation of retracting the elevator of the embodiment from the shaft.

FIG. 11 is an explanatory view showing an operation of escaping personnel from the car in the elevator according to the embodiment.

FIG. 12 is an explanatory diagram showing an operation of escaping personnel from the car in the elevator of the embodiment.

FIG. 13 is an explanatory diagram showing an operation of escaping personnel from the car in the elevator according to the embodiment.

FIG. 14 is a front view showing a conventional vertical shaft rope type elevator.

FIG. 15 is a side view showing a conventional shaft type elevator for a shaft.

FIG. 16 is a plan view showing a conventional shaft elevator for shafts.

[Explanation of symbols]

11 upper support, 12 cage, 13 lower enclosure, 14
... first winding means, 15 ... second winding means, 4
5: guide rail, 46: stop member, 47: weight,
49: detector, W1 to W3: hoist, M1 to M3
Electric motor, R1 to R3 ... rope.

Claims (1)

(57) [Claims] 1. An upper support provided on the ground, a first hoisting means provided on the upper support for suspending and lifting and unwinding and unwinding, and a guide rope are suspended and wound and unwinded. A second hoisting means, which is arranged in a shaft and hung and supported by the elevating rope, is moved up and down by winding and unreeling the elevating rope by the first hoisting means, and is attached to the guide rope at the time of elevating. A basket for transporting personnel materials to be guided, a weight suspended at a lower end of the guide rope to tension the guide rope, and a base, a shock absorber, a lower floor door and a safety enclosure disposed at the bottom of a shaft. And a lower enclosure provided integrally with the lower enclosure to support the weight so as to be able to move up and down, and to extend the guide rope. A guide rail having a height that allows the weight to descend, a weight detector that detects that the weight has lowered due to the extension of the guide rope, and a first detector that receives a signal from the weight detector and receives the signal from the weight detector. And a control means for stopping the driving of the hoisting means.