JP2011256004A - Vertical shaft cargo handling and carrying device and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently carry out earth and soil from a deep vertical shaft 1.SOLUTION: A one-shaft multi-car elevator 2 is provided in the vertical shaft 1 for cargo handling and carrying between a ground part A and an underground bottom part B of the vertical shaft 1. This has two cars 3a and 3b that are arranged vertically in the vertical shaft 1 and can go up and down independently of each other. In the ground part A, a ground side retreat part A2 to which the upper car 3a is retreated during loading to the lower car 3b is provided above a ground side loading level A1 where loading to the cars 3a and 3b is done. In the underground bottom part B, an underground side retreat part B2 to which the lower car 3b is retreated during loading to the upper car 3a is provided below an underground side loading level B1 where loading to the cars 3a and 3b is done.

Description

  The present invention relates to a cargo handling apparatus and a cargo handling method between a vertical portion of a vertical shaft and a bottom portion of an underground mine, and is used for carrying out sediment (slipping), transporting workers and materials, and the like.

As a method for carrying out sediment in underground construction,
(1) Method of loading earth and sand into a bucket and lifting and carrying it out by crane (2) Method of carrying out earth and sand continuously by a vertical conveyor (see Patent Document 1)
Are generally used.
On the other hand, in the technical field of elevators, there is a device called a one-shaft multi-car elevator that has a plurality of cars that are lifted and lowered independently in the same shaft (hoistway) (see Patent Documents 2 and 3).

Japanese Patent Laid-Open No. 08-002638 Japanese Patent Application Laid-Open No. 60-019679 JP 2008-156116 A

Conventionally, the above-mentioned sediment transport method is used for transporting sediment from a shaft having a depth of about 50 m, for example.
Here, in the method of lifting and unloading with a crane, the earth and sand unloading capacity is determined by the capacity of the unloading bucket, loading / unloading time, lifting speed, shaft depth, and the like. Therefore, as the shaft becomes deeper, the sediment carrying capacity decreases.

  On the other hand, in the method of carrying out the sediment continuously by the vertical conveyor, there is no decrease in the sediment carrying capacity even if the shaft becomes deep, but depending on the capacity of the sediment loaded on the conveyor, the speed of the conveyor, the depth of the shaft, Since the drive motor is selected, the drive motor is increased in size and the strength of the conveyor is required as the shaft is deepened. In general, when the depth of the shaft exceeds 100 m, it is difficult to realize the sediment transport method by the vertical conveyor from the viewpoint of selection of the drive motor and the required strength of the conveyor.

  The one-shaft multi-car elevator is an elevator system used in buildings and other buildings, but the upper car cannot overtake the lower car and overturn the lower car, while the lower car is the upper car. You can't pass over the basket and go around. As described above, since the operation of the car is restricted, it is inconvenient as a system for users who want to go from a random level to a random level and is not widely used.

  On the other hand, the sediment transport of the shaft is reciprocated only between the bottom part of the underground mine and the ground part, and there is no need for each car to pass the other car in operation, and the characteristics of the one-shaft multi-car elevator can be exhibited. However, as shown in FIG. 10, simply installing on a vertical shaft is not practical because the upper car cannot be unloaded at the bottom of the underground mine and the lower car cannot be unloaded at the ground.

  In view of such a situation, an object of the present invention is to provide a practical shaft loading and unloading apparatus and method capable of efficiently carrying out sediment from a deep shaft.

  In order to solve the above-mentioned problems, the present invention includes a one-shaft multi-car elevator having a plurality of cars that can be lifted and lowered independently within a shaft. Further, a ground-side unloading layer provided on the ground part for loading and unloading the car, and a ground-side retreating part provided above and for retreating the upper car during unloading to the lower car An underground side unloading layer that is provided at the bottom of the underground mine and performs loading and unloading to the car, and an underground side evacuation part that is provided below and lowers the lower car during unloading to the upper car, It is comprised including.

According to the present invention, the carrying capacity can be greatly improved by carrying with a plurality of cars within one shaft. Moreover, the lower car can be lifted and lowered while the upper car is being unloaded on the ground, and the upper car can be lifted and lowered while the lower car is being unloaded at the bottom of the underground mine.
In addition, by providing a ground side retraction part that retreats the upper car above the ground side unloading floor, it is possible to unload at the ground part of the lower car, and the lower car is placed below the base side unloading floor. By providing an underground retreating part for retreating, it becomes possible to unload the lower car at the bottom of the underground mine. Therefore, the unloading place may be one place on the ground side and one place on the underground side, and there is no waste of unloading equipment.

1 is a schematic perspective view of a vertical cargo handling and conveying apparatus showing an embodiment of the present invention. Wiring diagram of one-shaft multi-car elevator Explanatory drawing during loading and unloading from the ground to the bottom of the underground mine Explanatory drawing when transporting cargo from the bottom of the underground mine to the ground Diagram showing an example of transshipment on the ground Figure showing another example of transshipment on the ground Illustration of simulation example The figure which shows the simulation result in case of 100m depth The figure which shows the simulation result in case of 600m depth Explanatory diagram of problems of conventional one-shaft multi-car elevator

In the present invention, a one-shaft multi-car elevator is applied to cargo handling and transportation in a vertical shaft, taking advantage of the advantage and improving the drawbacks. First, the one-shaft multi-car elevator will be described.
A one shaft elevator is an elevator system used in buildings such as buildings.
Normally, a user who places one car on one shaft (hoistway), performs up / down operation in response to requests on each floor, and goes from a random level to a random level. Responding to requests.

  A one-shaft multi-car elevator is one in which a plurality of cars are arranged on one shaft (hoistway) with the aim of improving the carrying capacity. However, the upper car cannot pass over the lower car and go down, and the lower car cannot pass over the upper car and go up. Thus, for example, when a request from a user who wants to go from the second floor to the sixth floor overlaps with a request from a user who wants to go from the third floor to the fourth floor, the upper car and the lower car for each request. Cannot be effectively distributed, and the overall transport capacity is not improved. For this reason, one-shaft multi-car elevators are not widely used.

In cargo handling and transportation in vertical shafts, since the operation is only between the bottom of the underground mine and the above-ground part, there is no need for each car to overtake the other car in operation, and the carrying capacity using the characteristics of the one-shaft multi-car elevator Can be improved.
Also, in deep shafts, a great deal of effort is required to construct the shaft (hoistway), so the shaft (hoistway) needs to be used to the fullest. There is a meaning.

However, simply installing the one-shaft multi-car elevator on the shaft cannot unload the upper car at the bottom of the underground mine, and unload the lower car from the ground (see FIG. 10).
In addition, in order to improve the carrying capacity of the shaft using the one-shaft multi-car elevator, it is necessary to devise measures to shorten the loading / unloading time at the ground and the bottom of the underground mine. The effect of improvement is reduced.

The present invention has been made on the basis of such background and problems, and embodiments of the present invention will be described below in detail with reference to the drawings.
FIG. 1 is a schematic perspective view of a vertical cargo handling and conveying apparatus showing an embodiment of the present invention.
A one-shaft multi-car elevator 2 is provided in the shaft 1 for cargo handling and transportation between the ground portion A and the underground shaft bottom B of the shaft 1.

The one-shaft multi-car elevator 2 includes two cages (cages) that are vertically arranged in the shaft 1 and can be moved up and down independently, that is, an upper cage (hereinafter referred to as “upper cage”) 3 a and a lower cage (hereinafter referred to as “ 3b).
FIG. 2 is a wiring diagram of the one-shaft multi-car elevator 2.
The wire rope 4a of the upper car 3a is wound from the equalizer sheave 5a to the sheave 6a, the guide sheave 7a, the winch 8a, the guide sheave 9a, and the counterweight 10a attached to the upper car 3a. As a result, the upper car 3a is moved up and down by the winch 8a under the balance with the counterweight 10a.

The wire rope 4b of the lower car 3b is wound from the equalizer sheave 5b to a sheave 6b, a guide sheave 7b, a winch 8b, a guide sheave 9b, and a counterweight 10b attached to the lower car 3b. As a result, the lower car 3b is moved up and down by the winch 8b under a balance with the counterweight 10b.
Returning to FIG. 1, the ground portion A of the shaft 1 is provided above the ground side unloading layer A1 for unloading (loading / unloading) the cars 3a and 3b, and above the ground side unloading layer A1. And a ground side retreating part A2 for retreating the upper car 3a during loading / unloading to the lower car 3b. In this way, by providing the retracting portion A2 for the upper car 3a above the ground-side unloading hierarchy A1, it is possible to unload the lower car 3b on the ground.

  In addition, at the bottom B of the underground pit 1 are provided an underground side unloading layer B1 for unloading (loading / unloading) to the cars 3a and 3b, and a lower side of the underground side unloading layer B1. And an underground retreat part B2 for retreating the lower car 3b during loading and unloading to 3a. Thus, by providing the retracting portion B2 for the lower car 3b below the underground side unloading layer B1, it is possible to unload the upper car 3a at the bottom of the underground mine.

Accordingly, the upper car 3a can be moved up and down from the retreating part A2 above the ground-side unloading hierarchy A1 to the underground-side unloading hierarchy B1, and the lower car 3b can be moved from the above-ground unloading hierarchy A1 to the underground-side unloading hierarchy B1. It is possible to move up and down to the lower retreating part B2.
Of the cars 3a and 3b, the upper car 3a is used for both riding and earth and sand transportation, and the lower car 3b is dedicated to earth and sand transportation. In other words, when a person is placed, safety is ensured by placing the person on the upper car 3a with less danger.

When transporting earth and sand, a dedicated bucket (bucket for earth and sand transport) is used in consideration of the convenience of handling including unloading. In the case of riding, a riding bucket is used.
Therefore, the upper cage 3a can accommodate the earth and sand carrying bucket 11, but instead of this, the passenger bucket 12 can be accommodated, and a person can be put therein. The lower car 3b can accommodate only the earth and sand carrying bucket 11.

In order to unload these buckets 11 and 12, the ground side unloading layer A <b> 1 and the underground side unloading layer B <b> 1 are provided with cart equipment for unloading.
That is, in the ground side unloading hierarchy A1, for unloading the earth and sand carrying bucket 11 and the riding bucket 12 (for the earth and sand carrying bucket 11, unload the bucket containing earth and sand from the cages 3a and 3b, As trolley equipment for loading empty buckets, rails 13R and 13L extending symmetrically from doorways (doors) before and after the elevator and two trolleys 14R and 14L are provided.

Then, along the rails 13R and 13L, there are provided a cart standby stage S1 connected to the front and rear entrances of the elevator, a sediment discharge stage S2 following this, and a boarding / exiting stage S3 for workers following this.
In addition, the underground side unloading layer B1 is used for unloading the earth and sand carrying bucket 11 and the riding bucket 12 (for the earth and sand carrying bucket 11, the empty buckets are unloaded from the cars 3a and 3b, and the earth and sand are contained. Rails 15R and 15L extending symmetrically from the front and rear entrances of the elevator, and two carts 16R and 16L are provided as cart equipment for loading the buckets.

Rails are also provided on the floors of the cars 3a and 3b. The rails are connected to the rails 13R and 13L when stopped at the ground-side unloading layer A1, and rails 15R when stopped at the underground-side unloading layer B1. , 15L.
Next, cargo handling and transportation between the ground part A and the underground mine bottom part B will be described.
FIG. 3 is an explanatory diagram during loading and unloading from the ground part A to the underground mine bottom B, and it is assumed that an empty bucket (and a worker) is carried in.

When transporting from the ground to the bottom of the underground mine with two cars 3a and 3b, as shown in FIG. 3 (A), the upper car 3a is retreated to the ground side retreating part A2, and the lower car 3b is moved to the ground side. An empty bucket is loaded into the lower car 3b in the wholesale level A1.
Then, as shown in FIG. 3 (B), the lower car 3b is lowered, and during the lowering, the upper car 3a is positioned on the ground side unloading layer A1, and an empty bucket is loaded into the upper car 3a. When carrying in the worker, at this time, the passenger bucket carrying the worker is loaded on the upper car 3a.

Then, as shown in FIG. 3C, the upper car 3b is also lowered, and when the lower car 3b arrives at the underground side unloading level B1 during the descent, an empty bucket is unloaded from the lower car 3b.
Then, as shown in FIG. 3 (D), after unloading the lower car 3b, the lower car 3b is further lowered and retreated to the underground side evacuation part B2, and the upper car 3a is replaced with the underground side unloading layer. Arrives at B1. Thereby, an empty bucket or a riding bucket is unloaded from the upper car 3a.

FIG. 4 is an explanatory view during loading and unloading from the bottom B of the underground mine to the above-ground part A, and it is assumed that a bucket (and a worker) containing earth and sand is carried out.
When transporting from the bottom of the underground mine to the ground with two cars 3a and 3b, as shown in FIG. 4 (A), the lower car 3b is retreated to the underground side retreating part B2, and the upper car 3a is moved to the underground side. A bucket containing earth and sand is loaded into the upper car 3a at the wholesale level B1. When carrying out the worker, at this time, the passenger bucket carrying the worker is loaded on the upper car 3a.

Then, as shown in FIG. 4 (B), the upper car 3a is raised, and during that rise, the lower car 3b is positioned on the underground side unloading layer B1 and a bucket containing earth and sand is loaded on the lower car 3b. Include.
Then, as shown in FIG. 4C, the lower car 3b is also raised, and when the upper car 3a arrives at the ground-side unloading layer A1, the bucket or riding bucket containing earth and sand from the upper car 3a. Unload.

Then, as shown in FIG. 4 (D), after unloading the upper car 3a, the upper car 3a is further raised and retreated to the ground side retreating part A2, and the lower car 3b is replaced with the ground side unloading layer. Arrives at A1. Thereby, the bucket containing earth and sand is unloaded from the lower car 3b.
In addition, when carrying in from the ground part A to the underground mine bottom part B and carrying out from the underground mine bottom part B to the ground part A continuously is repeated from FIG. 3 (A) to (D) → FIG. 4 (A). What is necessary is just to repeat (D).

Next, a case where unloading and loading of each bucket are performed as a set (when transshipment is performed) will be described.
FIG. 5 is a diagram showing an example of transshipment in the ground part A. Both the upper car 3a and the lower car 3b are used for carrying earth and sand, and the buckets containing earth and sand are carried out from the respective cars 3a and 3b, and empty buckets are carried in. This is an example.

In FIG. 5A, an empty cart 14R is put on standby on one side (right side in the figure) of the ground side unloading layer A1, and a cart 14L with an empty bucket is put on the other side (left side in the figure). And waiting for the arrival of the basket.
In FIG. 5B, the upper car 3a arrives at the ground side unloading hierarchy A1. The upper car 3a accommodates a bucket containing earth and sand.

In FIG. 5 (C), one empty cart 14R enters the upper car 3a, puts a bucket containing earth and sand, and then exits to unload the bucket containing earth and sand from the upper car 3. To do.
In FIG. 5D, the carriage 14L with the other empty bucket placed in the upper car 3a is entered, the empty bucket is loaded into the upper car 3a, and the carriage 14L is retreated. Thereby, the transshipment of the upper car 3a is completed. Further, the bucket containing earth and sand unloaded from the upper basket 3a is moved to the earth and sand discharge stage by the carriage 14R, and the earth and sand are discarded.

  In FIG. 5 (E), the upper car 3a is further raised and retreated to the retreating part A2, and the lower car 3b arrives at the ground side unloading layer A1. A bucket containing earth and sand is also accommodated in the lower car 3b. When the lower car 3b arrives, a cart 14R with an empty bucket on which earth and sand have been thrown away is waiting on one side (right side in the figure) of the above-ground loading / unloading layer A1, and on the other side (left side in the figure) An empty cart 14L is waiting.

In FIG. 5 (F), the other empty carriage 14L enters the lower car 3b, puts a bucket containing earth and sand, and then leaves, thereby unloading the bucket containing earth and sand from the lower car 3b. To do.
In FIG. 5G, the carriage 14R with one empty bucket placed in the lower car 3b is entered, the empty bucket is loaded into the lower car 3b, and the carriage 14R is retreated. Thereby, the transshipment of the upper car 3a and the lower car 3b is completed, and it is possible to start toward the bottom of the underground mine. In addition, the bucket containing the earth and sand unloaded from the lower basket 3b is moved to the earth and sand discharge stage by the carriage 14L, and the earth and sand are discarded.

FIG. 6 is a diagram showing another example of transshipment in the ground part A, in which the upper car 3a is used for riding and the lower car 3b is used for carrying earth and sand.
In FIG. 6 (A), a cart with an empty cart 14R waiting on one side (the right side in the diagram) of the ground side unloading layer A1 and an empty bucket on which sediment has been discharged is placed on the other side (the left side in the diagram). 14L is waiting for the arrival of the car. Moreover, the passenger bucket is made to wait on the other boarding stage.

In FIG. 6B, the upper car 3a arrives at the ground side unloading hierarchy A1. A passenger bucket is accommodated in the upper car 3a.
In FIG. 6 (C), one empty carriage 14R enters the upper car 3a, puts the passenger bucket, and then exits to unload the passenger bucket from the upper car 3a. Then, carry it to the boarding / alighting space to get off the worker.

  In FIG. 6 (D), the upper car 3a is further raised and retreated to the retreating part A2, and the lower car 3b arrives at the ground side unloading layer A1. A bucket containing earth and sand is accommodated in the lower car 3b. When the lower car 3b arrives, an empty carriage 14R stands by on one side (right side in the figure) of the ground side unloading layer A1, and a carriage 14L with an empty bucket placed on the other side (left side in the figure). Is waiting.

In FIG. 6 (E), one empty cart 14R enters the lower car 3b, puts a bucket containing earth and sand, and then leaves, thereby unloading the bucket containing earth and sand from the lower car 3b. To do.
In FIG. 6 (F), the cart 14L with the other empty bucket is put into the lower car 3b, the empty bucket is loaded into the lower car 3b, and the cart 14L is retreated. Thereby, the transshipment of the lower car 3b is completed, and the lower car 3b can be started toward the bottom of the underground mine. In addition, the bucket containing the earth and sand unloaded from the lower basket 3b is moved to the earth and sand discharge stage by the carriage 14R, and the earth and sand are discarded.

In FIG. 6G, after the departure of the lower car 3b, the upper car 3a is lowered and stopped at the ground-side unloading layer A1 from the retreating part A2. At this time, one carriage 14R stands by with an empty bucket from which sediment has been discharged, and the other carriage 14L heads for the boarding / exiting stage.
In FIG. 6 (H), the other carriage 14L on which the riding bucket is placed at the getting-on / off stage enters the upper car 3a, the riding bucket is loaded on the upper car 3a, and the carriage 14L is retreated. Thereby, the transshipment of the upper car 3a is completed, and it is possible to start toward the bottom of the underground mine.

Although the transshipment at the ground part A has been described above, the transshipment at the underground mine bottom part B can be similarly performed.
According to the present embodiment, the carrying capacity can be greatly improved by carrying the two cages 3a and 3b in one shaft. Moreover, the lower car 3b can be raised and lowered during the loading / unloading of the upper car 3a on the ground, and conversely, the upper car 3a can be raised and lowered during the loading / unloading of the lower car 3b at the bottom of the underground mine.

  When the lower car 3b is unloaded at the ground, the upper car 3a is retreated to the ground side retreating part A2, and when the upper car 3a is unloaded at the bottom of the underground mine, the lower car 3b is retreated to the underground retreating part B2. Therefore, it is possible to unload the lower car 3b on the ground and to unload the upper car 3a on the bottom of the underground mine. In addition, the unloading place may be one place on the ground side and one place on the underground side, and there is no waste of unloading equipment.

In addition, according to the present embodiment, by providing a dedicated bucket for unloading earth and sand in the baskets 3a and 3b, it is possible to unload the entire bucket and to perform unloading work easily and quickly. Can do. Therefore, it is possible to contribute to the improvement of transport capacity by shortening the time for unloading earth and sand.
In addition, according to the present embodiment, by providing a cart facility for unloading buckets containing earth and sand from the cars 3a and 3b and loading empty buckets on the ground-side unloading layer A1, The bucket can be replaced easily and quickly. Therefore, the loading / unloading time on the ground can be shortened, which can contribute to the improvement of the carrying capacity.

In addition, according to the present embodiment, the underground side unloading layer B1 is provided with a cart facility that unloads empty buckets from the cars 3a and 3b and loads buckets containing earth and sand. The bucket can be replaced easily and quickly. Therefore, the loading / unloading time at the bottom of the underground mine can be shortened, which can contribute to the improvement of the carrying capacity.
Further, according to the present embodiment, of the two cars 3a and 3b, the upper car 3a is used for riding and earth and sand transport, and the lower car 3b is dedicated for earth and sand transport. By placing it on the car 3a, even if the earth and sand fall from the car carrying the earth and sand, the earth and sand will not be applied to the car on which the person is riding, and safety can be ensured.

According to the crane structure standard established based on the provisions of the Safety and Health Act, the safety factor of the hanging rope is 6 as the safety factor for earth and sand and materials, and 10 as the safety factor for passengers. In general, in loading and unloading, the loading weight for passengers is set to be significantly lower than the loading weight for earth and sand / materials.
Next, simulation results will be described.

In the simulation, as shown in FIG.
(1) Transshipment of the lower car 3b at the ground part A1 (the upper car 3a is on standby at the retracting part A2)
(2) Move the lower car 3b to the bottom B1, and move the upper car 3a to the ground part A1. (3) Transship the lower car 3b at the bottom part B1, and transship the upper car 3a at the ground part A1. (4) Lower car 3b is moved to the retreating part B2, and the upper car 3a is moved to the bottom part B1. (5) The upper car 3a is transloaded at the bottom part B1 (the lower car 3b is waiting at the retreating part B2).
(6) The upper car 3a is moved to the retreating part A2, and the lower car 3b is operated in the order of movement to the ground part A1.

The maximum speed of the car is 180 m / min, the acceleration is 0.50 m / s ² , the transshipment time (unloading / loading time) is 1.5 min, and the evacuation time (movement time between the unloading layer and the evacuation unit) ) For 0.3 min, each waiting time before arrival and after departure of another car at the time of evacuation is 0.3 min, the capacity of the bucket is 8 m ^3, and the unit time for a depth of 100 m and a depth of 600 m The per capita carrying capacity (carrying capacity) was simulated.
[When the depth is 100m]
In the upper car, as shown in the upper left column of FIG. 8, the waiting time (the sum of the lower car transshipment time and the waiting time after departure from the lower car) is 1.8 min, and the travel time from the ground side evacuation part to the ground part is 0.3 min, time required for transshipment (unloading / loading) of buckets on the ground is 1.5 min, time required for movement from the ground to the bottom is 0.66 min, bucket transshipment (unloading) on the bottom Loading time) is 1.5 min, the time required to move from the bottom of the pit to the ground side evacuation portion is 0.66 min, the waiting time (waiting time before arrival at the lower cage) is 0.3 min, and the total time is 6.72 min.

  In the lower car, as shown in the upper right column of FIG. 8, the time required for the transshipment (unloading / loading) of the bucket on the ground is 1.5 min, and the time required for the movement from the ground to the bottom is 0.66 min. , The time required to refill (unload / load) buckets at the bottom of the mine is 1.5 min, the time required to move from the bottom to the evacuation part is 0.3 min, the waiting time (upper car transshipment time and above and after The sum of the waiting time before arrival and after the departure of the car is 2.1 min, the time required to move from the bottom-side evacuation part to the ground part is 0.66 min, and the total time is 6.72 min.

Therefore, the carrying capacity (capacity) per unit time in the upper car and the lower car is
Q = 8 m ³ × 2 sets × 60 min / 6.72 min = 143 m ³ / h
It is.
On the other hand, with a single car, as shown in the lower left column of FIG. 8, the time required for the transshipment (unloading / loading) of buckets on the ground is 1.5 min, and it is necessary to move from the ground to the bottom The time is 0.66 min, the time required to transfer (unload / load) the bucket at the bottom of the shaft is 1.5 min, the time required to move from the bottom to the ground is 0.66 min, and the total time is 4.3 min. It is.

Therefore, the carrying capacity (capacity) per unit time in a single cage is
Q = 8 m ³ × 1 set × 60 min / 4.3 min = 112 m ³ / h
It is.
Therefore, in the case of a depth of 100 m, the use of the upper car and the lower car will increase the carrying capacity by 112 m ³ / h → 143 m ³ / h, that is, 28% for a single car.
[When depth is 600m]
In the upper car, as shown in the upper left column of FIG. 9, the waiting time (the sum of the lower car transshipment time and the waiting time after departure from the lower car) is 1.8 min, and the travel time from the ground side evacuation part to the ground part is 0.3 min, the time required for refilling (unloading / loading) buckets on the ground is 1.5 min, the time required for moving from the ground to the bottom is 3.43 min, and reloading buckets (unloading) on the bottom Loading time) is 1.5 min, the time required to move from the bottom of the pit to the ground side retreating unit is 3.43 min, the waiting time (waiting time before arrival at the lower cage) is 0.3 min, and the total time is 12.26 min.

  In the lower car, as shown in the upper right column of FIG. 9, the time required for the transshipment (unloading / loading) of the bucket on the ground is 1.5 min, and the time required for the movement from the ground to the bottom is 3.43 min. , The time required to refill (unload / load) buckets at the bottom of the mine is 1.5 min, the time required to move from the bottom to the evacuation part is 0.3 min, the waiting time (upper car transshipment time and above and after The sum of the waiting time before the arrival and after the departure of the car is 2.1 min, the time required to move from the bottom-side retreat part to the ground part is 3.43 min, and the total time is 12.26 min.

Therefore, the carrying capacity (capacity) per unit time in the upper car and the lower car is
Q = 8 m ³ × 2 sets × 60 min / 12.26 min = 78 m ³ / h
It is.
On the other hand, with a single car, as shown in the lower left column of FIG. 9, the time required for the transshipment (unloading / loading) of buckets on the ground is 1.5 min, and it is necessary to move from the ground to the bottom Time is 3.43 min, time required for transshipment (unloading / loading) of buckets at the bottom of the shaft is 1.5 min, time required for movement from the bottom to the ground is 3.43 min, and the total time is 9.9 min It is.

Therefore, the carrying capacity (capacity) per unit time in a single cage is
Q = 8m ³ × 1 set × 60min / 9.9min = 48m ³ / h
It is.
Therefore, in the case of a depth of 600 m, the use of the upper car and the lower car results in an increase in carrying capacity of 48 m ³ / h → 78 m ³ / h, that is, 63% with respect to a single car.

In addition, from the above simulation results, it can be seen that the transport capacity is increased by 28% at a depth of 100 m, whereas the transport capacity is increased by 63% at a depth of 600 m. . Therefore, it can be said that it is excellent as a cargo handling equipment for a deep shaft.
As described above, the present invention can be used for carrying out earth and sand as a cargo handling and conveying device in a vertical shaft, and the effect becomes greater as the depth of the vertical shaft increases.

  In the present embodiment, two one-shaft multi-car elevator cars are used, but three or more cars may be used. When n (n ≧ 3) cars are used, a retraction unit is provided above the ground side unloading layer to retreat the n−1 upper cars during the loading to the lowest car. It is necessary to provide a evacuation section below the underground loading / unloading floor for evacuating n-1 cars at the lower level during loading / unloading to the uppermost car. In this case, among the n cars, the uppermost car may be used for riding and earth and sand transportation, and the other lower n-1 cars may be dedicated for earth and sand transportation.

Moreover, although the elevator of this embodiment is used for the purpose of carrying out earth and sand and transporting workers, it goes without saying that it can be used for transporting various materials and equipment.
Thus, the illustrated embodiments are merely illustrative of the present invention, and the present invention includes various improvements made by those skilled in the art within the scope of the claims, in addition to those directly illustrated by the described embodiments. -Needless to say, it encompasses changes.

A Ground part A1 Ground side unloading level A2 Ground side retreating part B Underground pit bottom part B1 Underground side unloading level B2 Underground side retreating part 1 Vertical shaft 2 One-shaft multi-car elevator 3a Upper car 3b Lower car 11 Sediment transport bucket 12 Bucket 13R, 13L Rail 14R, 14L Dolly 15R, 15L Rail 16R, 16L Dolly

Claims (6)

A cargo handling device between the ground part of the shaft and the bottom part of the underground mine,
A one-shaft multi-car elevator that has a plurality of cars that are vertically arranged in a vertical shaft and can be lifted and lowered independently;
A ground-side unloading hierarchy that is installed on the ground and performs unloading to the car,
A ground-side retreating unit that is provided above the ground-side unloading layer and retracts the upper car during unloading to the lower car;
Underground loading / unloading floor that is installed at the bottom of the underground mine and performs loading / unloading to the car,
An underground side evacuation unit that is provided below the underground side unloading hierarchy, and evacuates the lower car during unloading to the upper car;
A vertical shaft cargo handling and transporting device characterized in that it comprises a shaft.   The vertical shaft loading and unloading apparatus according to claim 1, wherein a dedicated bucket is provided for loading and unloading earth and sand in the cage.   The vertical shaft loading and unloading apparatus according to claim 2, wherein a cart facility for unloading buckets containing earth and sand from the cage and loading empty buckets is provided on the ground-side unloading layer.   The vertical shaft loading and unloading apparatus according to claim 2, wherein the underground loading / unloading layer is provided with cart equipment for unloading empty buckets from the basket and loading buckets containing earth and sand.   5. The vehicle according to claim 1, wherein, among the plurality of cars, the uppermost car is used for both riding and earth and sand transportation, and the other lower car is dedicated for earth and sand transportation. Vertical shaft handling equipment. A cargo handling method between the ground part of the shaft and the bottom part of the underground mine,
A one-shaft multi-car elevator that has a plurality of cages that are vertically arranged in a vertical shaft and can be lifted and lowered independently, to carry cargo between the ground and the underground mine bottom,
Unloading the lower basket on the ground is done by evacuating the upper basket to the evacuation section above the level,
The vertical cargo handling / transporting method characterized in that loading / unloading of the upper car at the bottom of the underground mine is performed by retracting the lower car to a retreat part below the level.

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