JPS6221094B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of operating a gravity continuous transport system.

The gravity continuous transport system is a system in which an empty trolley goes up and a loaded trolley goes down a loop-shaped track to transport earth and sand. In other words, it is a system that uses gravity acting on the loaded earth and sand to move the trolley to transport the earth and sand. The problem with this case is that when it is first operated, the descending trolley is not loaded with earth and sand, so it cannot move without power. Therefore, it is necessary to use some method to load earth and sand onto the descending trolley.

The present invention has been made in view of the above points, and its purpose is to make it possible to run an endless bogie even when the descending bogie 3 is not loaded with earth and sand during the first operation. To provide a method for operating a gravity continuous transport system, which eliminates the need for loading earth and sand onto a descending cart in some way as in the past, and enables efficient operation.

Embodiments of the present invention will be described below with reference to the drawings.

An endless track 2 such as an endless rail is installed along the slope 1, forming a downward track 2a and an upward track 2b, and on the endless track 2, a unit bogie 3 such as a trolley is connected to a connecting member 4. Endless trolleys 5 connected in an endless manner via the two wheels are provided so as to be freely movable.

A hopper 7 equipped with a stock pile 6 is provided at the bent portion 2' on the high side of the endless track 2, and a hopper 7 with a stock pile 6 is provided so that earth and sand can be dropped and loaded onto the unit truck 3, thereby forming an earth and sand loading mechanism 8. There is.

Further, a guide rail 9 is provided which is curved upward along the lower bent portion 2'' of the endless track 2.

The unit truck 3 has wheels 10 as shown in FIG.
It has a structure in which a vehicle 12 is swingably attached to a traveling body 11 equipped with a pin 13 in a direction perpendicular to the traveling direction, and the vehicle 12 is equipped with the guide rail 9.
An auxiliary wheel 14 is provided in contact with the vehicle, and a door 15 is attached to the vestel 12 with a pin 16 so as to be openable and closable. When the auxiliary wheel 14 rides on the guide rail 9, the vessel 12 is tilted and the door 15 is opened.

Therefore, the earth and sand inside Bethel 12 were removed from the barge 19.
is discharged and loaded.

In Fig. 1, reference numerals 20 and 20 indicate tension relaxation devices, which are provided across the down track 2a and up track 2b, and as shown in Fig. 3, the braking mechanism A provided on the down track 2a and the up track 2b. The provided drive mechanism B is connected by a connecting shaft C to brake the loading unit truck 3 running on the down track 2a, and the braking force is transmitted to the empty loading unit truck 3 on the up track 2b via the connecting shaft C. It is structured as follows.

On the other hand, the pair of unit carts 3, 3 are connected via a coupler 4 as shown in FIG. 4, but since the coupler 4 has play, for example, in FIG.
On the downward trajectory 2a, the braking force is received by the braking mechanism A, so that the area is higher than the braking mechanism A (Fig. 3 A).
Since the unit truck 3 that is running is lowered by gravity, the play of the coupler 4 is closed and its length is _l1 , and the unit truck 3 that is traveling at a location lower than the braking mechanism A (Fig. 3 B) is similarly Since it is lowered by gravity, the play in the coupler 4 opens and its length l becomes _l2 . However, l ₂ > l ₁
Then, l ₂ −l ₁ is equal to the coupler backlash l. In addition,
The same applies to the upward trajectory 2b.

Next, details of the tension relaxation device will be explained.

5 to 14 are detailed explanatory diagrams of the braking mechanism A, in which a frame body 30 is attached to the inclined surface 1.

The frame body 30 includes a pair of left and right lower frame members 31, 31.
are connected by a plurality of lower horizontal members 32, and each lower frame member 31
A column 33 is erected at each end of the column, and a pair of left and right upper frame members 34 are horizontally connected across the column 33, and a pair of left and right tracks 35, 35 are attached to the pair of left and right upper frame members 34. It is tightened and fixed by a presser piece 36 and a bolt 37, and the track 35 connects to the discontinuous portion of the downward track 2a and continues the downward track 2a.

First and second idlers 40 ₁ , 40 ₂ are rotatably supported on both longitudinal sides of the frame 30, and third and fourth idlers 40 ₃ , 40 ₄ are rotatably supported in the intermediate portion. In addition, a sprocket 41 is located between the third and fourth idlers 40 ₃ and 40 _4.
is rotatably supported, and a chain 50 is wound around an idler 40 and a sprocket 41.

In other words, as shown in FIG. 9, the first idler ₄₀₁ has bearings 43 on the left and right brackets 42, 42.
The key 4 is mounted on a shaft 44 which is rotatably supported horizontally through the
5, the teeth of which protrude above the track 35.

Further, as shown in FIG. 10, the second idler ₄₀₂ has elongated holes 47 in the pair of left and right brackets 46, 46.
A shaft 4 is inserted between the shafts so as to be slidable in the longitudinal direction.
8 via a bearing 49, the teeth of which protrude upward from the raceway 35, and the shaft 48 is attached to the bolt 5 screwed into the bracket 46.
1, it is movable along the elongated hole 47, and the tension of the front chain 50 can be adjusted.

Further, as _shown in _FIG .
A pair of intermediate frame members 53, 53 suspended horizontally between each other.
It is fixed with a key 56 to a shaft 55 rotatably supported through bearings 54, 54, and has a smaller diameter than the first and second idlers ₄₀₁ , ₄₀₂ .

Further, as shown in FIG. 11, the sprocket 41 is fixed via a key 60 to a shaft 59 supported via bearings 58, 58 between a pair of intermediate frame members 57, 57, which are respectively suspended between the intermediate columns 52. At the same time, a brake disc 61 is bolted to the shaft 59, and a caliper 62 for tightening the brake disc 61 is fixed to the one intermediate frame member 57 to constitute a disc brake 63. One end of the shaft 59 protrudes outside the mounting frame and has a transmission sprocket 64 fixed thereto. The input shaft 70a of the generator 70 is connected to a sprocket 70b.
Further, an output shaft of a moke 70c is connected to the input shaft 70a via a coupling such as a coupling.

A pair of left and right first and second guide rails 71 and 72 are provided at inner positions of the pair of tracks 35 and 35, extending in the longitudinal direction, and the first guide rail 71 is bolted to each of the brackets 42 and 46. and has a downward guide surface 71a, and the second guide rail 72 has a pair of left and right upper frame members 3.
It is bolted to a horizontal frame 73 that is suspended horizontally between 4 and 34, and has an upward horizontal guide surface 72a, and on the exit side of the guide surface 72a is a slope 72 that slopes downward. A third guide rail 74 having a diameter 'a' is attached in succession.

The chain 50 connects the unit link 75 with the pin 76.
The idler 4 is connected to the pin 76 in an endless manner.
0. Roller 7 that meshes with the teeth of sprocket 41
7.

Claw members 80 are attached to the chain 50 at a predetermined pitch.
A plurality of pins P ₁ , P ₂ , P ₃ , and P ₄ are provided so as to be rotatable up and down, and the first, second, and third pins 9 provided on the unit truck 3
0 ₁ , 90 ₂ , and 90 ₃ .

The claw member 80 has a horizontal shaft 82 fixed to a bracket 81 bolted to the unit link 75 of the chain 50, as shown in FIGS. 9, 13, and 14.
A pair of movable plates 83, 83 are rotatably provided on the horizontal shaft 82, and rollers 8 are provided at both ends of the pair of movable plates 83, 83.
4 and 85 are rotatably provided, a roller 86 is rotatably provided on the horizontal shaft 82, and the spring 8 is connected between a lever 87 fixedly provided on the horizontal shaft 82 and a pair of movable plates 83.
8 is provided to urge the movable plate 83 to swing clockwise, and the roller 86 is attached to the first guide rail 71.
is guided by the guide surface 71a of the other roller 8.
5 is guided by the guide surface 72a of the second guide rail 72, and the movable plate 83 is held in a position against the spring 88, with one roller 84 slightly protruding from the first guide rail 71, as shown in FIG. be done.

The drive mechanism B is connected to the brake mechanism A as shown in FIG.
The generator 70 and the motor 70c are not provided, the inclined guide surface 72'a of the second guide rail 72 is provided on the entry side of the unit truck 3, and the third and fourth idlers 40 ₃ ,40 ₄
The only difference is that the sprocket 41 is mounted upside down and the chain 50' rolls in the opposite direction, so the same members will be given the same reference numerals and will not be described again by adding a ''.

The sprocket shaft 59' of the drive mechanism B and the sprocket shaft 59 of the brake mechanism A are connected via a coupling 100 as shown in FIG.

Then, the motor 70c is started (the generator 70 is not operated at this time) and the sprocket 70b, chain 69, output sprocket 68, input sprocket 67, chain 65, and transmission sprocket 64 are activated.
The chain 50 is rotated via the claw member 80, and the endless cart 5 is driven via the claw member 80. In this case, the vehicle speed of the endless trolley 5 is suitably about 1/10 of the vehicle speed during transportation.

An earth and sand loading mechanism 8 sequentially loads earth and sand onto the unit truck 3. Since the power consumption of the motor 70c gradually decreases, the motor output is controlled by a chopper or the like while checking the vehicle speed of the endless bogie 5.

When the power consumption of the motor 70c becomes zero, the power of the motor 70c is turned off and the circuit of the generator 70 is turned on.

After that, earth and sand transport begins without power.

Then, the downward trajectory 2a and the trajectory 35 of the braking mechanism A
Continuing with this, the load unit truck 3 travels from the downward track 2a onto the track 35 of the braking mechanism A.

Then, when the loading unit truck 3 reaches the braking mechanism A, the first pin ₉₀₁
4 and rolls on the chain 50.

As a result, the sprocket 41 is rotated, and the rotation is transmitted to the sprocket shaft 59' of the drive mechanism B via the shaft 59 and the coupling 100, so that the chain 50' is rolled and the pawl member 80' and the pin 90 are rotated. The unit carriage 3 on the upward side 2b is pushed up through the unit.

Therefore, part of the downward energy (velocity) of the loading unit truck 3 on the downward side 2a is transmitted as a force to push up the empty loading unit truck 3 on the upward side 2b, and the tension acting on the coupler 4 is reduced. Mitigating and preventing damage.

In addition, the first, second, and third pins 90 ₁ , 90 ₂ ,
The pitch between the pin 90 ₃ and _each claw member 80 is as shown in FIG. ₂ and 90 ₃ do not come into contact with each other, and the gap S ₁ (S ₁ is _{1/3 of the coupler play l) between the second pin 90 2 and} the claw member 80 It is narrower than the gap S ₂ (S ₂ is 2/3 of the coupler play l). For this reason, the play of the coupler 4 is closed.

When the claw member 80 reaches the end of the guide surface 72a as shown in FIG. 17b, the following unit truck 3
The first pin ₉₀₁ contacts the claw member 80. The play of the coupler 4 is closed.

When the claw member 80 reaches the inclined guide surface 72'a as shown in FIG. ₁ , the preceding unit carriage 3 and the following unit carriage 3 are separated, and when they are separated by the gap _S1 , the second pin ₉₀₂ comes into contact with the claw member 80. For this reason, the coupler 4 is 1/3L of play (that is, the gap is
Open only S ₁ ).

Then, as shown in FIG. 17d, the second pin 90 ₂
When the claw member 80 in contact reaches the inclined guide surface 72'a, the leading unit truck 3 and the following unit truck 3 are separated from each other, and the gap S ₂
When separated by the difference between the gap S ₁ (S ₂ - _{S 1} ), the third pin 9
0 ₃ comes into contact with the claw member 80.

Therefore, the play in the coupler opens by 2/3l (that is, the gap S ₂ ).

Then, as shown in FIG. 17d, when the claw member 80 that contacts the third pin ₉₀₃ reaches the inclined guide surface 72'a, the leading unit truck 3 and the following unit truck 3 are separated, and the play in the coupler 4 is further increased. Open and tilt guide surface 7
When the third pin ₉₀₃ and the claw member 80 are separated from each other after passing through 2'a, the play in the coupler 4 is completely opened.

That is, while the loading unit truck 3 is engaged with the chain 50 and rolling on the chain 50, it moves by 1/3 l in the traveling direction with respect to the chain 50.

In this way, the backlash l of the coupler 4 opens sequentially to 0, 1/3l, 2/3l, and l when passing through the braking mechanism A.
Since there is no sudden change from the closed state to the open state, no large impact force is applied to the coupler 4 and the coupler 4 is not damaged.

In the drive mechanism B, the chain 50' is reversed and the claw member 80' is moved from the inclined guide surface 72'a to the horizontal guide surface 72a, so that the claw member 80 is in contact with the first pin ₉₀₁ , contrary to the above. When it makes contact, the preceding unit truck 3 is pushed up to close 1/3 of the play in the coupler 4, and _then the claw member 80 comes into contact with the second pin 902 and pushed up, closing the play in the coupler 4 by 1/3L, and then The third pin ₉₀₃ comes into contact with the claw member 80 and pushes up to release the play in the coupler 4.

In other words, while the empty load unit truck 3 and the chain 50' are in contact with each other and are pushed up, the empty load unit truck 3 moves backward by 2/3L with respect to the chain 50', so the play in the coupler 4 is reduced by 1/3L. , 2/3l, and 1 in order to avoid applying large impact force.

Furthermore, since the braking mechanism A is provided with a generator 70 connected to the sprocket 41, it is possible to generate electricity using the downward energy.

In addition, when stopping the endless truck 5, the sprocket shafts 59, 5 are stopped by disc brakes 63, 63' provided in the braking mechanism A and the drive mechanism B.
9' should be stopped by braking.

As described in detail above, the present invention is a unit that constitutes the endless bogie 5 by first making the endless bogie 5, which is movably provided on the endless track 2 installed at an inclination, run by driving the motor 70c. Since the descending force of the unit truck 3, which is sequentially loaded with earth and sand onto the truck 3 and lowered, gradually increases and the power consumption of the motor 70c becomes zero, the endless truck 5 is run without power, so that the first operation starts. Even when there is no earth and sand loaded on the descending side cart 3, the endless cart 5 can run, and there is no need to load earth and sand onto the descending side cart 3 in some way as in the past, making the operation more efficient. can do well.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention.
The figure is an overall perspective view, Figure 2 is a front view of the unit truck, Figure 3 is a schematic plan view, Figure 4 is a side view showing the connected state of the unit truck, and Figures 5 to 14 are explanations of the braking mechanism. Figure 5 is a front view, Figure 6 is a plan view,
7 is a side view, FIG. 8, FIG. 9, FIG. 10, FIG. 11, and FIG. 12 are lines AA in FIG. 13 is a front view of the pawl member, FIG. 14 is a sectional view taken along F-F thereof, FIG. 15 is a central vertical sectional view of the drive mechanism, and FIG. The figure is a side view of the state in which the braking mechanism and the drive mechanism are connected, Figures 17a, b, c, d,
18 is an explanatory diagram of the operation, and FIG. 18 is an explanatory diagram of the connection state between the generator and the motor. 2 is an endless track, 2a is a downward track, 2b is an upward track, 3 is a unit truck, 5 is an endless truck, 7c is a motor, A is a braking mechanism, and B is a drive mechanism.

Claims (1)

[Claims] 1. The endless bogie 5, which is freely runnable on the endless track 2 installed at an angle, is first driven by the motor 70c.
The unit carts 3 constituting the endless cart 5 are loaded with earth and sand one after another and the unit carts 3 are driven by the unit carts 5. The descending force of the unit carts 3 gradually increases and the consumption power of the motor 70c becomes zero. A method of operating a gravity continuous transportation system, characterized in that the system runs without power.