JPS5854878A - Driving device for cargo-handling machine - Google Patents

Abstract

PURPOSE:To conduct repair work safely when switches are welded by reversing a reversible motor through the reversal switch under a state that the forward- turn switch is non-conduction-held through the OFF operation of the OFF self- holding type forward-turn limit switch. CONSTITUTION:When the forward-turn manually operated switch 21 is pushed, a forward-turn relay 90 is actuated, and the reversible motor 17 is forward turned and winding operation is conducted. When winding reaches an upper limit, the forward-turn operation limit switch 64 is at OFF, and the reversible motor 17 is stopped. When the contact 95 of the forward-turn relay 90 is welded, the OFF of the forward-turn limit switches 67, 69 is held by means of a locking lever because winding operation is conducted even in case of the OFF operation of the forward-turn operation limit switch 64, and the reversible motor 17 is stopped. When repairing, a reversal manually operated switch 22 is pushed and the reversible motor 17 is reversed, and freight is dropped.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is intended for use in manufacturing and assembly factories that are equipped with electric chain blocks, electric trolleys, electric saddles, etc. and that handle relatively heavy objects, for example. The two ends of the beam are connected and fixed to the saddles supported by each running rail, and the front E trolley is supported by the beam horizontally suspended at an appropriate height.
Regarding a cargo handling device in which the chain lock is suspended from the trolley and the traveling bicycle is moved back and forth and left and right to lift and suspend cargo at any desired position, the reversible motor rotates in the forward direction. A forward rotation limit switch installed between the switch and the drive power source is connected to the drive power source via a reverse rotation limit switch, and the forward rotation switch is kept non-conductive by turning off the self-holding forward rotation limit switch. The reversible motor is configured to be able to be arbitrarily driven in only one direction via a reverse rotation switch, and even if the forward rotation switch is welded while the reversible motor is driving an electric chain block, an electric trolley, an electric saddle, etc. By rotating the reversible motor in one direction via the reversing switch, the chain block can be used to lower the load being lifted, or the Toro IJ- and saddle can be moved to the storage standby position. It is possible to repair chain blocks, trolleys, saddles, etc., the repair work can be carried out safely at relatively high places such as the ceiling of a factory, and the above-mentioned OFF self-holding forward rotation limit switch is turned off. By keeping the forward rotation switch non-conductive, it is possible to prevent accidents such as short-circuiting of the drive power supply through the burnt out forward rotation switch when the reverse rotation switch is turned on, making it safe and easy to handle. The present invention aims to provide a drive device for a cargo handling machine.

7 Below, embodiments of the present invention will be described in detail based on the drawings.

As shown in Figures 1 to 3, the construction supports for factories, etc.
1) A pair of left and right traveling rails +31 [31] are installed approximately parallel to the beam member (2), and an electric saddle (5) is installed that connects and fixes both ends of the H-shaped steel beam (4).
)(5) is placed on each rail +31 [3). It is formed to fit onto the rail (3). Further, the electric trolley (8) is fully supported by the beam (4) that is horizontally suspended at an appropriate height, and the wheels (9) are fitted to the beam (4).
and a reversible motor (10) for driving the wheels (9), the trolley (8) is configured to move the trolley (8) left and right by rotating the motor (10) in forward and reverse directions. Furthermore, the body frame (+3) of the trolley (8) is attached via the support shaft (11) and the hanging fitting (12).
+ 3) At the bottom end, an electric chain prong (14) is hung so that it can be swung back and forth and left and right, and a luggage hanging hook (15) is
) and the Cheno (16)
a reversible motor (17) for hoisting and lowering the motor; a power distribution box (18) for controlling the motor (17); and an operation switch box (20) suspended from the box (]8) via a wiring cable 119). ) are provided in the chain bath (14). And the Chenoblock (1
4) The reversible motor (+7) k is rotated forward and reverse to connect the hook (
15) Forward/reverse manual operation switch ρ1) (2)
a forward/reverse manual operation switch (23) (24) for reversing the reversible motor (10) of the trolley (8) to move the trolley IJ-+81 from side to side, and the saddle (24).
A forward/reverse manual operation switch (25) that rotates the reversible motor (7) of 6) in the forward and reverse directions to move the saddle (5) back and forth.
26) in the operation switch box (20),
Lifting and hanging work of cargo using the Chenprosoku (14) and the saddle (5) and Toro IJ-+8+
The system is configured to perform cargo handling operations such as moving cargo back and forth and left and right.

As shown in FIGS. 4 and 5, the above-mentioned chenobrock (1
4) A small diameter first gear (I!8) is formed on the drive shaft section η of the reversible motor (lO), and the large diameter gear is jointly supported by the first gear 2~, and the second gear (29) A brake hub (3) is fixed to the rotating shaft (30) in the opposite direction of engagement, and a friction plate (13) (341) is interposed between the second gear (29) and the brake hub (340). fart)
are provided in a pinched manner, and the claws (36
), the left-hand screw (31) prevents the ratchet wheel (35) from rotating in the same direction as the rotational direction of the rotating shaft (yet) screwed into the second gear (29), and the hook ( 1
5) A rotary chain (16) is formed so as to be able to be fixed and maintained in a state in which a load is suspended. Further, a small-diameter eighth gear (3'7) is formed on the rotating shaft (30), and a cylindrical shaft (38) is supported on the same axis as the drive shaft t2η, and is meshed with the third gear l37). A cheno wheel [0] that engages a large-diameter fourth gear (39) and a rotary chain (16) is formed integrally with the cylindrical shaft (381), and a main body frame (
A chain guide (43) is provided between 41H421, and a limit switch box (44) is attached to the outside of one main body frame (41).

As shown in FIGS. 6 and 7, a rectangular frame (40) and a bolt (46) (46
A boss (481) through which the sensing shaft (47) is inserted and fixed using a +, and a long hole (491
The ascending and descending guide cylinder (531 (541) and the above-mentioned Cheno guide (43) are constructed by loosely inserting the bin (511 (52) into the above-mentioned Cheno wheel (40)), and the middle is connected to the above-mentioned Cheno wheel (40). Combine rotor chain (
Insert both sides of the guide tube (53) (541) into the cross-shaped holes (55) (56) of the rotary chain (541).
16) Attach stoppers (5η (58)) to both ends, and buffer springs (59) (6) to both ends of the chino (16).
0) is wound, and a stopper (5
η(58) is the guide groove! 53) Formed to abut against (54). Further, a sensing bracket (61) supporting the sensing shaft (7) is fixed to the outside of the main body frame (41), and the shaft (47) is connected to the sensing shaft (47) via a swing regulating link fixed to the sensing shaft (47). The support force of the horizontal maintenance spring (63) is energized to raise and lower the rotary chain (16) with the chain guide supported substantially horizontally, and a forward/reverse operation limit switch is installed. (64 (6 (to)
A 10th Chris inch (66) having a forward/reverse limit switch (67), a second and a 30th Chris switch (71) having a forward/reverse limit switch (68) and (+9) (3), and a Q bottle are connected to the sensing shaft [ 611, and the bracket (61) and each rotary switch j [36]
(71) (3) above limit switch box (4)
Built into (1).

As shown in Fig. 8 to Fig. 1O, the fixed contact (73) and the movable contact (74) are connected to each limit switch (6).
4) (651 (67) +6 (to) +69) (yo)
The 10th tally switch (6e) is provided with a large sector-shaped cam floor having a long cam floor, which energizes the movable contact (74) with a spring (75) force that presses the movable contact (74) onto the fixed contact (73). The first cam (increased) and the second and 30th Talis inch (711 (721) narrow fan-shaped second and third cams Qη times having a short cam floor provided in the sensing shaft +47 are engaged and pivoted on the sensing shaft +47). , each cam (76) in conjunction with the swinging of the chain guide (431).
(77)' (formed to rotate 781. The above-mentioned reverse operation and reverse limit switch (6 uniform and +6
8) A sliding body is attached to the movable contact (74) of (70)9)...
The forward rotation operation and forward rotation limit switch (64) and the movable contact (74) of (6η (69)) are brought into contact with each other.
・Full-prismatic sliding shirt) (80)... and the first to third cams +76) (7
7) Pressure roll (81) that presses (78)
. . . as the sliding body 9) . . . and the sliding shaft (8)
The stopper (57) +58) at the end of the rotary chain (16) is attached to the tip of the guide cylinder (53).
(When the chassis guide (43) swings in contact with 541, the sensing shirt) (47) rotates, causing the first
Turn off the forward rotation or reverse rotation operation limit switch +64) or (65) via the cam (76)',
Furthermore, when the chain guide (43) swings and rotates, the second and third cams (4'7) rotate.
77) +78) forward rotation limit switch (67)
)+69) or reverse limit switch (6(to)(7)
0) is turned off, and at the forward and reverse operation limit of the reversible motor (17) of the chain block (14), the forward and reverse operation limit switch (e4) (6 69) and (68) (7f
)) or form to operate off. Furthermore, the movable contact (74) of the forward rotation limit switch (67) (69)
... is provided with a lock lever (8'4 (83)) that keeps it separated from the fixed contact (73) and non-conductive,
The through hole (841...) of the lock lever (Jun (83))
Push the above-mentioned sliding shaft (■)... through the shaft (80)... and insert the tongue piece trowel... to engage into the notch (8 wires) of the shaft (80)... until the lock lever < - (821 (83) penetrates Hole (
34)...The notch (36) is formed on the rim of the mouth.
)... Spring (8 pieces) that holds the tongue piece (86) numbered.
・・Applies force to the lock lever (82) (8:l), and also attaches a protrusion (89) to the guide groove (exposed) for guiding and regulating the sliding of the lock lever ), and as the sliding shaft β0) retreats, the tongue piece (86) engages with the notch (8υ), fixing the forward rotation limit switch re7) (6~ movable contacts (74)... contact(
73) Formed so as to support away from...

As shown in FIG. 11, the reversible motor θ of the chain lock (14) is rotated forward and the rotary chain (16i'Th
It is equipped with a forward rotation relay (90) for hoisting, and a reversal relay (91) for reversing the reversible motor (17) to lower the rotary chain (16), and the forward/reverse manual operation switch (21) ( 22) and the forward/reverse operation limit switch (641+6 (g))
0+ (91) forward/reverse relay coil (92)j9'l
) is connected to the operating power source 194), and the forward and reverse rotation limit switches (67) +69) and +
68) ff (I and the forward/reverse relay (901 (9
11 forward/reverse switch (95) (through 961 to this drive power supply (R, S, T,) to the reversible motor (1η)
is connected to the OFF self-holding type normal rotation limit switch (6η (6
9), the reversible motor (17) can be arbitrarily driven in reverse only in one direction via the forward rotation switch (with the head held non-conductive, the reverse rotation switch +96), for example, when lifting a load. Forward rotation limit switch +67
) +69) is activated, the reverse manual operation switch (
22, the motor (17) k is reversed via the reverse switch (96), and the rotor chain (16)
While lowering the load by lowering the load, the forward rotation limit switch (
67) (69) are connected to the drive power sources (S, T), and when the forward rotation limit switches (6'7) (69) are activated, the forward rotation switch (9 wires only) and the reverse rotation limit switch +68 (711 ) The forward rotation and reverse rotation switches (9) are formed so as to be held in a non-conductive state when activated.

The present invention is constructed as described above, and includes the forward/reverse manual operation switch (23) of the operation switch box (20) (
241 (25) Press +26+ to move the saddle (5) and trolley (8) back and forth and left and right, position the chenoplock (14) in the desired position, and then set the rotary chain (1).
6) It is used to raise and lower a load suspended from the hook (15) at the tip, and when the forward rotation manual operation switch (21) of the switch box (20) is pressed, the relay coil (92) of the forward rotation relay (90) is excited. Turn on the forward rotation switch (9) and turn on the reversible motor (1711) to wind up the rotary chain (16) and raise the load suspended from the hook (15) to the desired height. sometimes roto f
, when the hook (15) comes into contact with the guide tube (53) via the stopper (57) at the proximal end or the buffer spring (59) at the upper limit of hoisting of the rn (16), the rotation of the sensing shaft (47) displacing the sliding shaft (80) of the rotation operation limit switch (64) by the first cam (76);
Turn off the switch (64) and turn off the reversible motor (17).
If the forward rotation switch (head) is burnt out and welded, the rotor chain (16) will be further wound without stopping the motor (17) when the forward rotation operation limit switch (64I is turned off). However, when the levers (82) and (83) are engaged with the shafts (80) and (80), the switches (67) and 69) are held off and the reversible motor (1711) is stopped.As described above, If the forward rotation limit switches (67) (69) e are kept off by the long levers (82) (83) and the forward rotation switch Makoto becomes non-conductive, the reverse manual operation switch j
22) Press k to reverse reverse relay (91) IJ L'
- The coil (93) is energized, the reversing switch (96) is turned on, the reversible motor (171) is reversed, the rotor chain (1G) is lowered, the load on the hook (15) is lowered, and the welding is carried out. Repair the forward rotation relay (90), press the lock levers (82) and (83) to release the engagement of the notches (8ω... and tongue pieces (86)...), and then close the forward rotation limit switch. (6ηf69)
k is returned to ON to enable forward rotation of the reversible motor (17) by the forward rotation manual operation switch (21). As mentioned above, when the forward rotation switch (9) is welded and the forward rotation limit switch (67) (69) is turned off, the reversible motor (1 motor) by the reverse rotation relay (91) is turned off by the reverse operation of the forward rotation limit switch ( 67) (69) The drive power supply (R) by the welded forward rotation switch (95) does not turn on automatically.

This prevents a short-circuit accident of the reversible motor (S, T) and allows the reversible motor (1η reverse drive only) to be performed arbitrarily.

- When the manual reverse operation switch (4) of the switch box (20) is pressed, the reverse switch (9G) is turned on by the excitation of the relay coil (93) of the reverse relay (91), and the reversible motor (1η is reversed). Let me rotochien (
16) Lower k and lower the load suspended from the hook (15). At this time, when the stopper (58) at the end of the chain (16) contacts the guide cylinder (541) via the buffer spring (60) at the lower limit of lowering of the rotary chain (16), the sensing shaft (4η rotation) The sliding body (79) of the limit switch collar is displaced by the first cam (76), and the switch (661' is turned off) to stop the reversible motor (171). If the rotor chain (+6) is lowered further, the motor (+7) will not stop when the reverse operation limit switch (6-yen is turned off) or the sensing shaft will be lowered as the rotor chain (16) is lowered. (By the rotation of 471, the reverse limit switch +68) The slide 1Iilj body V9) V9) of (70) is displaced by the second and third cams (7η (7),
With the hook (15) lowered to the lower limit, the motor (1
7) Stop. As described above, when the reverse operation limit switch (6 (to) (70)
s) Attach the forward rotation operation limit switch (6η (6
9)' The forward rotation switch (9 (to)) connected through Rotation and reverse switch (951) f913+
This is to prevent the forward and reverse movement of the reversible motor (1η) and repair the welded reversing relay (91).

In the above embodiment, when the reversible motor (1 motor) of the chenoglock (14) is controlled or when the saddle (5) moves to the front and rear ends of the running rail (3), the forward/reverse operation and the forward/reverse limit switch (64) +65 ) and (67) (68
) +69) (70) or the saddle (5
) can also be controlled in the same way as the chenobrock (14), and when the Toro IJ-+8+ moves to the left and right ends of the beam (4), the limit switches (64) and (65) ) and +67) (68) (69
) (70) so as to operate in the same manner, the reversible motor (10) of the trolley (8) can also be easily controlled in the same manner as in the above embodiment.

As is clear from the above embodiments, the present invention provides a reversible motor (
171 normal rotation switch (9 (to)) and drive power supply (R, S,
Forward rotation limit switch +671 installed between
(691t, reverse limit switch (68) +70
) is connected to the drive power source (R, S, T) through The reversible motor (17) can be arbitrarily driven only in one direction via a reversing switch (9G), for example, an electric chain block (14), an electric trolley (8), an electric saddle (5), etc. Even if the forward rotation switch (95) is welded during the drive of the reversible motor (71+10+ (+7)), the reverse rotation switch (96)
By rotating the reversible motor (14) in one direction through the After moving, the chain block (14), trolley (8), and saddle (6) can be repaired, and the repair work can be carried out safely at relatively high places such as the ceiling of the factory. In addition, the forward rotation switch t! can be turned off by the off operation of the above-mentioned OFF self-holding type forward rotation rim switch (67) +69). 15) Keeping k non-conductive prevents accidents such as short-circuiting of the drive power supply (R, S, T) through the forward rotation switch (95) 'i, which is welded to the reverse rotation switch + 96) ' when turned on. It has remarkable effects such as being safe and easy to handle.

[Brief explanation of the drawing]

Fig. 1 is an overall front view showing one embodiment of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a side view of the same, Fig. 4 is a cross-sectional view of the cembronok, and Fig. 5 is an exploded explanatory view thereof. , Fig. 6 is a partially enlarged plan view, Fig. 7 is an explanatory diagram of the construction, Fig. 8 is a partially enlarged exploded view, Fig. 9 is an explanatory diagram of its operation, Fig. 10 is a partially enlarged sectional view, and Fig. 11 is a partially enlarged sectional view. It is an electrical circuit diagram. (171... Reversible motor (6η1 mother)... Forward rotation limit switch (6 (to) (7
0)・Reverse rotation switch Q161・Reverse rotation switch (R, S, T)...Drive power supply Applicant: Tadashi Fujiwara (17), agent of Zojirushi Champ Lock Co., Ltd. 4 JP 89b8-
54878 (tj)

Claims (1)

[Claims] A forward rotation limit switch installed between the forward rotation switch of the reversible motor and the drive power source is connected to the drive power source via the reverse rotation limit switch, and the normal rotation limit switch is turned off by the OFF fffFI of the OFF self-holding type forward rotation limit switch. 1. A drive device for a cargo handling machine, characterized in that the reversible motor can be arbitrarily driven only in one direction via a reversing switch while the reversing switch is held in a non-conductive state.