JP3503406B2 - Transfer equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] [0001] The present invention relates to, for example, a foundry
Heavy objects such as metals melted by the furnace
Self-propelled transport truck and transport to a location away from the furnace
Equipment related. [0002] 2. Description of the Related Art A metal is heated and melted at a high temperature.
After the poured metal is poured into the mold, the metal
Wait and remove the mold to produce the metal product of the required shape.
FIG. 16 shows a conventional static pressure molding line.
Molten metal using such a transport equipment 100
Is transported from the furnace to the mold. [0003] The conventional transport equipment 100 is shown in FIG.
15 and the rail 3 laid on the floor 2 etc.
As shown, a self-propelled transport vehicle 10 that runs on the rail 3
1 and so on. [0004] The rail 3 is, for example, as shown in FIG.
For example, from the first to fourth melting furnaces 5, 6, 7, 8
The self-propelled carrier 101 is moved to the mold 9.
Is laid on the floor 2 and the like. [0005] The rail 3 passes near a plurality of molds 9.
A first line portion 11 and a substantially straight line from the first line portion 11.
The first to third melting furnaces 5, 6,
7, a second line portion 12 passing near the second line portion 7, and the second line portion 12.
12 and bent toward the fourth melting furnace 8.
3, the first line section 11 and the second line section
First turntable arranged at a position connecting part 12
14, the second line portion 12 and the third line portion 13
And a second turntable 15 disposed at a position where
I have. [0006] As shown in FIG.
Is a pair of left and right wheels running on the rail 3
The bogie main body 21 to which 20, 20, etc. are attached is operated by an operator or the like.
A cockpit 22 for turning
Pan 23 and a drive unit 102 for driving the wheels 20
And [0007] The driving section 102 is provided as shown in FIG.
The power transmission unit 103 connected to the wheels 20
Connected to the power transmission unit 103 to supply power.
And a hydraulic motor 104 for supplying. Hydraulic mode
Oil for supplying hydraulic oil to the motor 104
The pressure unit 105 is connected. This hydraulic unit 1
05 and the hydraulic motor 104, a manual valve 106 is provided.
Have been killed. The manual valve 106 is operated by an operator.
The opening is controlled to change the amount of oil supplied to the hydraulic motor 104.
Further, the torque and the like generated by the hydraulic motor 104 are controlled.
Function. The output shaft of the hydraulic motor 104
107 connects the pair of wheels 20, 20 to each other.
It is provided so as to be substantially parallel to the axle 108. The power transmission unit 103 is provided with the hydraulic
Connected to the output shaft 107 of the motor 104 and
While transmitting the torque generated by the 04 in a substantially right angle direction,
Right angle transmission unit 110 provided with first bevel gear 109 at the tip
And mesh with the first bevel gear 109 and
A second bevel gear 111 connected to the axle 108.
ing. The first bevel gear 109 and the second bevel gear
Meshing with the car 111 so that the plane of rotation is perpendicular to each other
ing. With the above-described configuration, the power transmission unit is used.
The torque 103 generated by the hydraulic motor 104
Transmitted to the axle 108 via bevel gears 109 and 111,
20 and 20 are being rotated. [0011] SUMMARY OF THE INVENTION The above-described conventional transfer apparatus
The self-propelled carrier 101 used for the equipment 100 is a hydraulic
Hydraulic mode using hydraulic oil supplied from unit 105
The vehicle 104 is driven by transmitting power to the axle 108
ing. However, the self-propelled transport vehicle 10 for transporting the molten metal
1 is a weight whose own weight exceeds, for example, 20 tons,
Power is transmitted from the hydraulic motor 104 to the axle 108
Bevel gears 109 and 111 of the power transmission unit 103
There is a risk of damage due to insufficient strength, and
This was a factor that reduced productivity. Further, in the first line section 11,
When casting the molten metal into the mold 9, the hydraulic unit 105
Hydraulic oil supplied and driving hydraulic motor 104
Because the amount is controlled using the manual valve 106,
4 Repeating running and stopping relatively little by little will improve the stopping accuracy
Deterioration and lack of strength of bevel gears 109 and 111
And the downtime will be longer, reducing productivity.
Had become. Further, melting furnaces 5, 6, 7, 8 shown in FIG.
The bogie 101 travels from the first turntable 14 to
The bevel gears 109 and 111
Shortage makes it difficult to drive at high speeds, reducing productivity
Was a factor. [0015] Accordingly, an object of the present invention is to provide a motion control system for a self-propelled carrier.
Increased strength to prevent damage to the force transmission unit
And increase the weight as much as possible and stop the bogie.
Self-propelled transport vehicle that can improve accuracy and reliability
And transport equipment. [0016] [Means for solving the problems]
To achieve, the invention of claim 1Transfer equipment
Runs on the rail laid on the floor and on the rail
And a motor for driving an axle that supports wheels for driving.
Where the self-propelled transport vehicle intersects with the above rail track
And the self-propelled carrier is lifted by the lift means.
In the state of floating from the rail,
A self-propelled vehicle with a turntable for changing track
The carriage is a power transmission unit connected to the output shaft of the motor.
A knit, and the power transmission unit is
The first position and the second position in the axial direction of the drive shaft interlocked with the output shaft
Shift spur tooth movably provided between
A second gear in which the car and the shift spur gear mesh with each other at the first position;
1 is a second transmission spur gear and the second transmission spur gear is the second transmission spur gear.
A second transmission spur gear meshing with the first transmission, and the first transmission
A high-speed gear for transmitting rotation of a spur gear to the axle;
Low-speed teeth for transmitting the rotation of the second transmission spur gear to the axle
The driven side gear portion having a wheel and the shift spur gear are shifted.
By moving the shift spur gear, the shift
One of the gear spur gear and the second speed change spur gear
Shift driving means for meshing with the
The self-propelled carrier is pushed up by the
Driving the shift driving means in a state in which
Shifts the spur gear for shifting to the first position or above.
Switch to the second position.
Variable transfer speed and transfer directionIs characterized by
You. [0017] As a result of taking the above measures, the following operation is obtained.
Occurs. The self-propelled transport vehicle according to claim 1 is a power transmission device.
Unit shift gear in the first position or the second position
Slide to the motor torque
Through the first transmission spur gear or the second transmission spur gear.
And transmitted to the axle. [0019]the aboveThe self-propelled transport truck is used to lift the transport equipment.
The bogie body is pushed up by the step to make the wheel rotate freely.
The drive unit shifts the power transmission unit
The first spur gear by moving the gear spur gear along the axis of the drive shaft.
One of the transmission spur gear and the second transmission spur gear
The gears of the power transmission unit are damaged because they mesh
Nothing. [0020] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below.
This will be described with reference to FIGS. Same as the conventional example
In a static pressure molding line that manufactures metal products
Equipment 1 is a pair laid on floor 2 etc. as shown in FIG.
And melting furnaces 5, 6, as shown in FIG.
Supplying and distributing molten metal consisting of metals and the like from 7, 8
Equipment and self-propelled on the rail 3 and cast this molten metal
It is provided with a self-propelled carrier 4 and the like. From the rail 3 and the self-propelled carrier 4
The static molding line equipped with the transfer equipment 1 shown in FIG.
As described above, for example, the first to fourth melting furnaces 5, 6, 7,
8 and a plurality of molds 9. In the illustrated example, molten metal is poured into the mold 9.
The receiving openings 10 are arranged so as to be substantially aligned with each other.
ing. The first to third melting furnaces 5, 6, and 7 are
The receiving port 10 of the mold 9 is substantially at a right angle from the lines arranged on each other.
It is arranged so as to be on a straight line extending in the direction. 4th
The melting furnace 8 has a straight line with the third blast furnace 7,
Transport provided with first to third melting furnaces 5, 6, 7
From the road toward the straight line connecting the
It is arranged to bend. The rail 3 is connected to the receiving port 10 of the mold 9.
A first line provided substantially parallel to a straight line connected to each other
Section 11 and the first to third melting furnaces 5, 6, 7
The second line section provided substantially parallel to the straight line
12 and the third smelting furnace 7 and the fourth smelting furnace 8
A third line section 13 provided along the straight line;
The track between the first track section 11 and the second track section 12 intersects
First turntable for line switching provided at the place where
, The second line portion 12 and the third line portion 13
Line switching line provided at the intersection of the lines between
2 turntables 15. The first line section 11 is connected to the mold 9 of each other.
The space between the receiving ports 10 is formed to be relatively narrow.
Therefore, the stop interval of the self-propelled transport vehicle 4 should be relatively short.
Has become. The second line section 12 is connected to the first to
The interval between the third melting furnaces 5, 6, 7 is formed relatively wide.
And the stop interval of the self-propelled carrier 4 is relatively long.
It is enclosed. The first turntable 14 has a first
From the track section 11 to the second track section 12, or a second line
From the road section 12 to the first track section 11, the self-propelled carrier 4
In order to switch the line, the axis along the arrow K in the figure
It is designed to rotate around the center. Also, the second turn
The table 15 is the same as the first turntable 14 described above.
Then, from the second line portion 12 to the third line portion 13,
To the third line section 13 or the second line section 12
Arrows in the figure to switch the track of the traveling carrier 4
It rotates along K. The first turntable 14 and the second
The self-propelled carrier 4 is different from the
From the line portions 11, 12, 13 to the line portions 11, 12, 13
When transporting to the
A lifting means 70 is provided. This lift hand
The step 70 is connected to a cylinder or the like (not shown) by the floor 2.
And is provided between the rails 3 and 3. The lift means 70 includes a self-propelled carrier 4
When placed on the turntables 14 and 15, as shown in FIG.
As described below, the tip of which will be described later.
The truck body 21 is supported, and wheels 20 (described later) of the truck 4 are supported.
Are raised from the rails 3,3. Also, between the rails 3 and 3, the carriage 4
A metal that activates the proximity sensor group 54 described later by its presence
A plurality of pieces 18 are buried. With the configuration described above,
The self-propelled transport vehicle 4 includes first to fourth melting furnaces 5, 6,
So that it can travel between 7, 8 and the mold 9
I have. The self-propelled carrier 4 is, as shown in FIG.
A truck with wheels 20 and the like running on the rail 3 attached
A body 21 and a cockpit 2 for an operator or the like to drive
2, the ladle 23 for storing the molten metal, and the wheels 20
And a driving unit 24 that performs the operation. The bogie body 21 has a longitudinal direction in which it travels.
A pair of rollable wheels 20 at the front and rear
And a pair of wheels 20, 20 are connected to each other by an axle 25.
The self-propelled carrier 4 is connected to the rail 3
It is free to run on top. The cockpit 22 is operated by an operator.
It is formed to the size possible and the operator can
It has a window 26 for observation. In the cockpit part 22
In this case, the operator can, for example, run / stop the self-propelled carrier 4.
An operation such as stop is performed. The ladle 23 is provided with the first to fourth molten metal.
For storing the molten metal supplied from the furnaces 5, 6, 7, 8 etc.
The mold 9 is made of a material having high heat resistance.
A pouring port 27 for pouring the molten metal into the receiving port 10 is provided. The ladle 23 is running while the self-propelled carrier 4 is traveling.
In the above, as shown by a solid line in the drawing,
Is held in a position where the molten metal does not spill from
When pouring the molten metal into the receiving port 10 of the mold 9,
The pouring port 27 is connected to the receiving port 10 as shown by a chain line Q.
They are driven in the approaching direction. The driving section 24 is shown in FIGS.
Power transmission unit 28 connected to the axle 25
And supplies power by connecting to the power transmission unit 28.
And a hydraulic motor 29. The hydraulic motor 29 includes the motor 29
Is connected to a hydraulic unit 30 for supplying hydraulic oil to the oil tank.
A step is provided between the hydraulic unit 30 and the hydraulic motor 29.
Duty control driven by the ping motor 31
A valve 32 is provided. The duty control valve 32 is connected to the step
The opening is controlled by the ping motor 31 and the hydraulic motor
Change the amount of oil supplied to the motor 29, and the hydraulic motor 29
It has a function of controlling the generated torque. Also on
The output shaft 33 of the hydraulic motor 29 is substantially parallel to the axle 25.
It is arranged so that it becomes. The power transmission unit 28 is connected to the hydraulic motor
Connected to an output shaft 33 of the motor 29 via a joint 34 and
A drive shaft 35 arranged in parallel with the axle 25;
Between the driving shaft 35 and the axle 25 in parallel with the axle 25
The fixed shaft 36 disposed, the drive shaft 35, the fixed shaft
36 and gears 38, described later, provided on the axle 25,
44, 47, 51 and the like.
ing. The drive shaft 35 outputs the output of the motor 29.
It is interlocked with the shaft 33 and is slidable in the axial direction.
For shifts that are concentric with each other as seen from the side as shown in
A spur gear 38 is provided. This shift spur gear 38
As shown in FIG. 1, the holding member 39 is
Therefore it is sandwiched. The holding member 39 includes the power transmission unit.
The case 37 is inserted through the housing 37 of the
The hydraulic cylinder 40 arranged along the axis 35 is connected
I have. The hydraulic cylinder 40 expands and contracts.
And the shift spur gear 38 through the holding member 39.
From the position shown in FIG. 13 to the position shown in FIG.
It is made to make. The hydraulic cylinder 40 and the clamping
The holding member 39 includes the shift driving means described in this specification.
Has formed. Note that, as shown in FIG.
The wheel 38 meshes with a first transmission spur gear 44 described later.
The matching position is the first position described in this specification, and FIG.
As shown in FIG.
The position where the speed spur gear 44 meshes with each other is referred to as a second position.
I do. The drive shaft 35 and the housing 37 are connected to each other.
A bearing 41 is provided between them. Drive shaft above
As shown in FIG. 2, the shift spur gear 35 and the shift spur gear 38
Due to the spline engagement with each other, the drive shaft 3
When the 5 rotates, the shift spur gear 38 also rotates reliably.
It has become so. A protruding portion is provided above the holding member 39.
42 are provided integrally. The above-mentioned housing 37 has
The shift spur gear 38 and the holding member 39 are shown in FIGS.
4, when it moves to the position shown in FIG.
Of the hydraulic cylinder 40 when the contact sensor 43
Are provided along the pair. The fixed shaft 36 is fixed to the housing 37.
ing. The fixed shaft 36 has the same structure as the shift spur gear 38 described above.
A relatively large first transmission spur gear 44 and a low speed gear
The portions 47 are provided concentrically with each other when viewed from the side. The low-speed gear portion 47 is provided with the shift flat portion.
A size intermediate between the gear 38 and the first transmission spur gear 44
The formed relay gear 45 and the first speed-changing spur gear 4
Second spur gear 4 having a size substantially equal to 4
And 6 are integrally provided so as to be concentric with each other. The first speed-changing spur gear 44 is
The spur gear 38 is moved to the first position shown in FIG.
When the shift spur gear 3 is moved by the
And 8 mesh with each other. The second gear spur teeth of the low speed gear portion 47
Similarly, in the case of the wheel 46, the shift spur gear 38 is shown in FIG.
When the shift spur gear 3 is moved to the second position,
And 8 mesh with each other. Note that the above low speed
Gear portion 47 is formed by connecting the relay gear 45 having a small diameter to the first gear.
It is arranged facing the transmission spur gear 44. The fixed shaft 36 and the low speed gear portion
47 and the first spur gear 44 for shifting.
A bearing 48 is provided as shown in FIG. This
The gearing 47 for the low speed and the first gear
When the transmission spur gear 44 rotates, the fixed shaft 36
It does not hinder rotation. A driven gear portion 51 is provided on the axle 25.
Have been killed. The driven gear portion 51 is provided with the low-speed tooth.
Meshing with the relay gear 45 of the car part 47 and the relay
Low-speed gear 49 formed approximately the same size as gear 45
And the first speed-changing spur gear 44 meshes with each other and
High speed teeth formed smaller than the shift spur gear 38
The vehicle 50 and the car 50 are integrally provided so as to be concentric with each other.
You. The axle 25 and the driven gear 5
1 by spline engagement with each other as shown in FIG.
And the driven gear 51 rotates.
Then, the axle 25 is also surely rotated. At the left and right ends of the axle 25, joints 34 are provided.
A pair of left and right wheels 20 is provided through the intermediary. Each car
The wheel 20 is connected to the axle 25 via a bearing 52.
Appearance sandwiched between the left and right by the chassis member 53
It has become. The chassis member 53 is mounted on the carriage body 2.
1. Thus, the chassis member 53
Since it is connected to the axle 25 via the bearing 52,
The rotation of the axle 25 is not hindered. Shift spur teeth of the power transmission unit 28
The wheel 38 is in the state shown in FIG.
47 or the first transmission spur gear 44
Therefore, the torque generated by the hydraulic motor 29 is
Don't tell 0. At this time, the self-propelled carrier 4 stops.
Will keep their state. As shown in FIG. 13, the shift spur gear 3
8 is moved by the hydraulic cylinder 40 to the low speed gear 47
Is moved to a position where it meshes with the second transmission spur gear 46.
And the torque generated by the hydraulic motor 29 is
For the low speed of the relay gear 45 of the vehicle part 47 to the driven side gear part 51
It is transmitted to the gear 49. And the wheel 20 is
The self-propelled carrier 4 rotates and runs. Next, as shown in FIG.
The gear 38 is driven by the hydraulic cylinder 40 to perform the first speed change.
When it is moved to a position where it meshes with
The torque generated by the gear 29 is the same as that of the first speed changing spur gear 4.
4 to the high-speed gear 50 of the driven gear 51
Becomes Then, the wheel 20 rotates and the self-propelled carrier
4 will run. At this time, the state shown in FIG.
The torque generated by the hydraulic motor is relatively large
Relatively small gear from the first gear (the first transmission spur gear 44).
Since it is transmitted to the gear (high-speed gear 50), the self-propelled carrier 4
Means traveling at a relatively high speed. The bogie main body 21 of the self-propelled transport bogie 4
Proximity sensor group 54 is provided at the lower part of FIG.
Have been. The proximity sensor group 54 is located between the rails 3.
To detect the metal piece 18 installed in the
When the metal piece 18 is detected, the duty control valve 32
To the stepping motor 31 for controlling the opening of the
It has become. In the illustrated example, the proximity sensor group 54
Consists of multiple proximity sensors and stops abnormally in order from the left.
Sensor 55, zone division sensor 56, first deceleration condition
Sensor 57, fixed position stop sensor 58, second deceleration condition sensor
Sa59. In the above-mentioned rail 3, FIGS.
As shown in FIGS. 9 and 12, first to fourth melting furnaces
5, 6, 7, 8 and the vicinity of the mold 9, and FIGS.
As shown in FIG. 10, both ends of the second line section 12 are
At the position corresponding to the second deceleration condition sensor 59,
Deceleration condition metal piece 60 formed relatively long along
At a position corresponding to the fixed position stop sensor 58 and above
The deceleration condition is relatively short at the approximate center of the metal piece 60.
The fixed position stopping metal piece 61 is provided integrally. What
The deceleration condition metal piece 60 and the fixed position stop metal piece shown in FIG.
61 is near all the molds 9 as shown in FIG.
Each is provided. As shown in FIG. 11, the third line
At the end of the portion 13 on the second turntable 15 side,
Turntable 15 is provided on this turntable 15
Rails 3 and rails provided on the third track section 13
3 are rotated so as to be aligned with each other, FIG.
Speed reduction strip as if it were integrated with the metal pieces 60, 61 shown in FIG.
A metal piece 60 is provided. The self-propelled transport vehicle 4 corresponds to the one shown in FIGS.
When the vehicle reaches the position shown in FIG.
The sensor 59 detects the deceleration condition metal piece 60 and
The information is transmitted to the stepping motor 31. Then,
The motor 31 gradually opens the duty control valve 32.
The torque generated by the hydraulic motor 29
The speed of the carriage 4 gradually decreases as the
It will be. Then, the fixed position stop sensor 58 is
Detecting the stop position metal piece 61, this step
To the motor 31. Then, stepping mode
When the motor 31 completely closes the opening of the duty control valve 32,
Since the hydraulic motor 29 stops in both cases, the truck 4 is
Stop at 5, 6, 7, 8 and near the mold 9. As shown in FIG. 5 and the like, the second line
Stop of the bogie 4 including the road section 12 and the third track section 13
The stop interval is relatively wide, that is, the truck 4 is relatively fast.
A trolley comprising a range in which the vehicle can travel and the first track section 11
4 has a relatively narrow stop interval, ie, the bogie 4 is relatively
At the border with the range where you must drive at low speed,
Zone division metal at a position corresponding to zone division sensor 56
A piece 62 is provided. The self-propelled transport vehicle 4 is mounted on the zone
When reaching the position where the genus piece 62 is provided,
Zone segment sensor 56 detects the zone segment metal piece 62.
And drive at a relatively high speed and at a low speed.
The cock is about to reach the border with the area that must be
The information is transmitted to the operator in the pit section 22. FIG. 4, FIG. 5, FIG. 10 and FIG.
As shown in FIG.
A metal piece 6 for abnormal stop at a position corresponding to the normal stop sensor 55
3 are provided. If the self-propelled carrier 4 is
4, the track portions 11, 12, shown in FIG.
13 and fixed position with the deceleration sensor 59
If not stopped by the stop sensor 58,
The stop sensor 55 senses the abnormal stop metal piece 63 and
The traveling carrier 4 is urgently stopped. Next, the self-propelled carrier 4 and the carrier
The operation of the facility 1 will be described. First, the self-propelled carrier
When the car 4 is on the second track section 12 of the rail 3,
The first turntable along the arrow J shown in FIG.
I am running towards 14. At this time,
The ladle 23 of the carriage 4 is in a state of being filled with the molten metal.
You. The power transmission unit 28 is connected to the second line.
Since the road section 12 has a relatively wide range of stopping intervals, FIG.
As shown in FIG. 4, the shift spur gear 38 and the first
The speed spur gear 44 meshes with each other. For this reason,
The self-propelled carrier 4 travels at a relatively high speed.
You. Then, approaching the first turntable 14
Specifically, as shown in FIG. 5, the second deceleration condition sensor 59
The deceleration condition metal piece 60 is sensed and gradually
The traveling carrier 4 decelerates. Thereafter, the fixed position stop sensor 58 is
The first turntable 1 is detected by detecting the stop metal piece 61.
The self-propelled transport vehicle 4 stops near 4. Turntable
14 and the rail 3 of the second track section 12
Turntable 14 is rotated until are aligned with each other.
After that, the self-propelled carrier 4 moves to the first turntable 14
To enter. A self-propelled carrier is provided on the first turntable 14.
4 enters the lift means 70 (not shown).
The protrusion protrudes from the turntable 14 by a solder.
The lifting means 70 lifts the carriage body 21 from below.
And raised the wheel 20 from the rails 3 and 3.
State. In the state described above, the first turntable
The self-propelled transport vehicle is rotated by rotating the
Change the direction of 4. If the wheels 20 are rails 3
The bogie 4 is inadvertently moved because it is raised
During the rotation of the first turntable 14, the ladle 23
The trolley 4 is securely connected to the
The course is changed to one track section 11. The first line section 11 has a relatively narrow stop interval.
Pressing from below by the lifting means 70
In the raised state, the shift spur gear 70 is
13 from the first position shown in FIG.
To the second position shown in FIG. This cut
At the time of replacement, the carriage 4 is in a state where the rotation of the wheels 20 is free.
So, for example, with a self-propelled transport vehicle 4 weighing more than 20 tons
Also, spur gears 38, 44, etc. may be damaged when switching
There is no. The self-propelled transport with the track changed to the first track section 11
The carriage 4 is a shift spur gear 3 of the power transmission unit 28.
8 is switched to the second position as described above
This time, it will approach the mold 9 at a relatively slow speed.
You. Then, close to the position where the deceleration condition metal piece 60 is buried.
Then, the carriage 4 is moved to the same speed as the speed reduction condition metal piece 6 as before.
0 and the second deceleration condition sensor 59 gradually decelerates
Then, the fixed position stop metal piece 61 and the fixed position stop sensor 58
As a result, the vehicle stops near the mold 9. At this time, the power transmission unit 28 of the truck 4
Shift spur gear 38 is in the second position and the hydraulic motor 2
9 is controlled using a duty control valve 32.
The operator controls the oil amount with the manual valve 106.
If it takes about half the time to stop compared to when
In addition, the stopping accuracy is also improved. Then, the ladle 23 is replaced with a two-dot chain line Q in FIG.
Then, shift to the state where the molten metal is poured into the receiving port 10 as shown in
You. At this time, as described above, the stop accuracy of the self-propelled transport vehicle 4
Is less than half the case where the manual valve 106 is used.
So that the molten metal does not spill
It will definitely be poured. In the first line section 11, the self-propelled
The carrier 4 pours the above-mentioned molten metal into the plurality of molds 9.
The step of inserting is repeated. And inside the ladle 23
When the molten metal is exhausted, the bogie 4 moves to the first turntable.
From the furnace 14 to the vicinity of any melting furnaces 5, 6, 7, 8
Will run. At this time, the power transmission unit 2
8 is the first gear opposite to the above.
From the second position to the first position on the
It will switch. By repeating the above steps, the melting
Molten metal, etc., melted in furnaces 5, 6, 7, 8
Is poured into the mold 9 to produce a casting.
You. According to the configuration described above, the self-propelled transport vehicle 4 is driven.
Hydraulic motor 29 and supply of hydraulic oil to this hydraulic motor 29
Between the hydraulic unit 30 and the stepping motor 31
Therefore, the duty control valve 32 for controlling the opening is provided.
And the torque generated by the hydraulic motor 29
Spur gear 3 for power transmission unit 28 to be transmitted to 20
8 is the first position shown in FIG. 14 and the second position shown in FIG.
And can be switched. For this reason, the molds arranged close to each other
9, the shift spur gear 38 is moved to the second position.
And the duty control valve 32 adjusts the amount of hydraulic oil.
Stop when repeating running and stopping by controlling
Improved accuracy and reduced downtime
It works. Therefore, the molten metal is discharged from the receiving port 10 of the mold 9.
Pour the molten metal into the mold 9 without spilling.
As well as reduced downtime, resulting in higher work efficiency
Will also be improved. The blast furnace 5, which has few opportunities to stop,
When traveling near 6, 7, and 8, the power transmission unit 2
8 is shifted to the first position,
It is possible to drive at a relatively high speed, so that
The rate will be improved. Further, for shifting the power transmission unit 28
When switching the spur gear 38, the lifting means 70
And the wheels 20 are lifted off the rails 3 and 3.
Therefore, the edges of the spur gears 38 and 44 of the power transmission unit 28
It is possible to prevent the parts and the like from being damaged. [0078] According to the first aspect of the present invention,
Because the power transmission unit is composed of spur gears,
While minimizing the weight increase of the transmission unit,
Unit's mechanical strength and
Reliability can be improved. Also,Claim 1According to the invention described in
The bogie body is pushed up by the lifting means of the transport equipment and the wheels
When the gears are free to rotate, shift means
Move the gear shift spur gear along the axis of the drive shaft.
Out of the first gearshift spur gear and the second gearshift spur gear
One of them is engaged. Therefore, the bogie body
The transport speed and the traveling direction can be controlled and the power transmission
The knit gear will not be damaged. Note that, between the hydraulic unit and the hydraulic motor,
Deute adjusts the amount of hydraulic oil supplied to the hydraulic motor
Control valve and a control for controlling the opening of the duty control valve.
If the vehicle is equipped with control means,
Improves stop accuracy and repeats stop when stopping
The time required can be reduced. Therefore, production
It is possible to improve the performance. Further, the shift spur gear is shifted as described above.
By moving it, a relatively wide range of stop intervals
Can travel at high speeds and in a relatively narrow stop interval
You can run at low speed. Therefore, further production
It is possible to improve the performance.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing a power transmission unit of a self-propelled carrier according to an embodiment of the present invention. FIG. 2 is a sectional view showing the power transmission unit along the line ii-ii shown in FIG. 1; FIG. 3 is a front view showing the proximity sensor group of the embodiment shown in FIG. 1; FIG. 4 is a sectional view showing a rail taken along the line iv-iv shown in FIG. 16; FIG. 5 is a sectional view showing a rail along the line vv shown in FIG. 16; FIG. 6 is a sectional view showing a rail taken along the line vi-vi shown in FIG. 16; FIG. 7 is a sectional view showing a rail taken along the line vii-vii shown in FIG. 16; FIG. 8 is a sectional view showing a rail taken along the line viii-viii shown in FIG. 16; FIG. 9 is a sectional view showing the rail along the line ix-ix shown in FIG. 16; FIG. 10 is a sectional view showing the rail along the line xx shown in FIG. 16; FIG. 11 is a sectional view showing the rail along the line xi-xi shown in FIG. 16; FIG. 12 is a sectional view showing a rail taken along the line xii-xii shown in FIG. 16; FIG. 13 is a sectional view showing a state of the low-speed mode of the power transmission unit of the embodiment shown in FIG. 1; FIG. 14 is a sectional view showing a state of the high-speed mode of the power transmission unit of the embodiment shown in FIG. 1; FIG. 15 is a perspective view showing a self-propelled transport vehicle. FIG. 16 is a plan view showing transport equipment. FIG. 17 is a sectional view showing a power transmission unit of a conventional self-propelled transport vehicle. [Description of Signs] 1 ... Conveying equipment 2 ... Floor 3 ... Rail 4 ... Self-propelled carrier 14 ... First turntable 15 ... Second turntable 20 ... Wheel 21 ... Bogie body 25 ... Axle 28 ... Power transmission unit 29 ... hydraulic motor 33 ... output shaft 35 ... drive shaft 38 ... shift spur gear 39 ... clamping member (shift drive means) 40 ... hydraulic cylinder (shift drive means) 44 ... first speed change spur gear 46 ... second Speed changing spur gear 49 ... Low speed gear 50 ... High speed gear 51 ... Driving side gear section 70 ... Lift means

────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yuichi Hazaki 4-21-1, Shimomaruko, Ota-ku, Tokyo Mitsubishi Motors Engineering Co., Ltd. (56) References JP-A-63-103758 (JP, A) JP-A-6-115432 (JP, A) JP-A-8-67336 (JP, A) JP-A-4-190960 (JP, A) JP-A-59-23814 (JP, U) JP-A-1-179907 (JP, A) , U) JP-A-3-127860 (JP, U) JP-A-4-22171 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B61B 13/00 B61J 1/00

Claims (1)

(57) [Claim 1] A self-propelled carrier having a rail laid on a floor, and a motor for driving an axle that supports wheels for traveling on the rail, A track switching turntable provided at a location where rail tracks intersect and changing the direction of the self-propelled carrier in a state where the self-propelled carrier is lifted off the rail by lift means; The traveling carrier has a power transmission unit connected to an output shaft of the motor, and the power transmission unit is configured to firstly move in a direction of an axis of a drive shaft interlocked with the output shaft of the motor.
A shift spur gear movably provided between the first position and the second position; a first speed change spur gear meshing with the shift spur gear at the first position; A second speed-changing spur gear meshing with the second position; a high-speed gear transmitting the rotation of the first speed-changing spur gear to the axle; and a rotation of the second speed-changing spur gear to the axle. A driven-side gear portion having a low-speed gear to be transmitted; and one of the first and second transmission spur gears by moving the shift spur gear. And a shift drive unit that meshes with the shift spur gear by driving the shift drive unit in a state where the self-propelled carrier is lifted up by the lift unit and the wheels are freely rotated. First position or above And to switch to the second position, conveying equipment, characterized in that to be able to vary the conveying speed and the conveying direction of the self-propelled conveying carriage.