JPS5854879A - Driving device for cargo-handling machine - Google Patents

Abstract

PURPOSE:To conduct repair work safely when switches are welded by holding only the forward-turn switch under a fully conductive state when the forward- turn limit switch is operated and the forward-turn and reversal switches when the reversal limit switch is actuated. CONSTITUTION:When a reversible motor 17 is forward turned and operated, the OFF of the forward-turn limit switches 67, 69 is held by means of a locking lever when the reversible motor 17 is not stopped even if the forward-turn operation limit switch 64 is at OFF through the welding of the contact 95 of a forward-turn relay 90. The motor can be reversed through the operation of a reversal relay 96 at that time. When the reversible motor 17 is reversed and operated, the OFF of the reversal limit switches 68, 70 is held by means of the locking lever when the reversible motor 17 is not stopped even if the reversal operation limit switch 65 is at OFF through the welding of the contact 96 of a reversal relay 91. The reversible motor 17 cannot also be forward turned and operated at that time.

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. erect the beam, connect and fix both ends of the beam to the saddle supported by each running rail, and support the Toro IJ-e on the beam horizontally suspended at an appropriate height;
The chain block is suspended on the trolley, the saddle is run back and forth along the traveling rail, the trolley is moved left and right along the beam, and the chain block is moved back and forth and left and right as desired. Regarding equipment for cargo handling work that lifts and suspends cargo at the position shown in FIG. When the forward rotation limit switch is activated, only the forward rotation switch is held in the non-conducting state, and when the reverse rotation limit switch is activated, the forward rotation and reverse rotation switches are held in the non-conducting state. By welding the reversing switch during the drive of the reversible motor of the trolley, electric saddle, etc. and always maintaining a conductive state, the chain block can hold the load hanging hook of the rotary chain in the maximum extended state.
In addition, when the trolley and saddle are moved to the storage standby position, the reversible motor can be stopped and held by turning off the reverse limit switch, and the chain block, trolley, and saddle can be stopped in a posture position that is easiest to repair, and the It is possible to safely perform repair work on chenobrocks, trolleys, saddles, etc. that are installed in relatively high places such as ceilings, and also allows for lifting of loads on chenoblocs when the reversing switch for lowering the load is welded. It is an object of the present invention to provide a drive device for a cargo handling machine that can prevent inconvenient operations and can be handled safely and easily.

Embodiments of the present invention will be described in detail below based on the drawings.

As shown in Figures 1 to 3, construction supports for factories, etc.
1)... A pair of left and right running rails +3) (3) are erected approximately parallel to each other via beam members (2), and an electric saddle (5) is installed that fully connects and fixes both ends of the H-shaped steel beam (4).
) (5) is mounted on each rail (31 (3). A wheel (6) to be fitted onto the rail (3)... and the wheel (6) are placed on each rail (31 (3).
) A fully driven reversible motor (sword) is provided on the saddle (5), and the motor (formed so as to move the beam (4) back and forth by reversing the force). The electric trolley (8) is supported on the beam (4), and the wheels (9) are fitted onto the beam (4).
The trolley (8) is equipped with a reversible motor (10) that fully drives the wheels (9), and is configured to move the trolley IJ-(81 from side to side) by rotating the motor (10) in forward and reverse directions. Further, the main body frame (13) of the trolley (8) (1,3
) An electric chain block (14) is suspended from the lower end so as to be able to swing forward, backward, left and right, and a rotary chain (16) has a cargo hanging hook (15), and a reversible motor for hoisting and lowering the chain (16). (17), a power distribution box (18) for controlling the motor (17), and an operation switch box (20) suspended from the wiring cable (+9+'e to the box 08) to the Cheno block (14). Prepare for the above-mentioned Cheno block (14)
The reversible motor (17) of the hook (1,
5) Forward/reverse manual operation switch (211
(221 and said trolley (8) glue reverse motor (1o)
a forward/reverse manual operation switch (23) (2) for moving the trolley (8) left or right by reversing the
forward/reverse manual operation switch ca (28) that reverses the reversible motor (7) of ) to move the saddle (5) back and forth.
is provided in the operation switch box (2o), and cargo handling operations such as lifting and lowering of cargo using the chenobrock (14) and moving the cargo back and forth and left and right using the saddle 15) and Toro IJ-18) Configure it to do this.

As shown in FIGS. 4 and 5, - the above Che/Block (
14) reversible motor (1o) drive shaft (27
) is formed with a small-diameter first gear (28);
28) with a large-diameter second gear (29) always meshing with the rotating shaft (30) supporting the second gear C (G), and forming a left-hand thread (31) thereon. K 2nd gear (
At the same time, a brake hub (32I) is fixed to the rotating shaft (301) in the opposite direction to which the second gear (29) is threaded, and a friction plate (32I) is fixed between the second gear (29) and the brake hub (301). 431 (34) '!r interposed model car C
L'il is provided in a pinched manner, and a pawl (36) for engaging and disengaging the model wheel C35) is attached, and the left-hand screw C31) is connected to the second gear (2
9) Prevent the rotation of the mold wheel C35) in the same direction as the rotational direction of the rotating shaft (30) into which K is screwed, and rotate the rotary chain t16).
The hook at the tip (formed so that the rotary chain (16) can be fixed and maintained while the load is suspended in the country).
3o) is formed with a small-diameter sixth gear (37), and a large-diameter sixth gear (37) that supports a cylindrical shaft C' (81) on the same axis as the drive shaft (27) and meshes with the sixth gear 67; Cheno wheel that meshes with 4 gear (, E9) and rotor chain (113)' t4D f # cylinder shaft (38) K
The cheno wheels (4) are integrally formed, respectively.
01 lower main body frame f41) (Ceno guide (131'Th installed between 42+, -1000 main body frame (marked outside limit switch box (441') installed.

As shown in Figures 6 and 7, square frame (d5)
And, fix it to 1j frame (4ω) and bolt (4G1
(Sensing shirt using 461) A boss (48) through which the frame (491 (sensing shirt) TD7) is inserted and fixed, and a rising and descending guide that is attached by loosely inserting the pin +5++ ('i) into the four elongated holes (491 (501) Tube (53) f541
The guide tube 53) is connected to both sides of the rotary chain (16) which forms one moat for the chain guide and engages the chain wheel (4Q) VC intermediate.
4+'s cross-shaped hole 65) (56), and attach stop collars (571 (5al) to both ends of the rotary chain (161), and attach buffer springs (5al) to both ends of the chain (16).
9) (Wrap the rotor chain (16) with 601
When the upper and lower limits of f5 are activated, the stoppers (57) and (58) are connected to the guide tube (53) through the springs +59) and +601'.
4). In addition, the sensing shaft 47) is fully supported by the sensing bracket (61).
) is fixed to the outer side of the main body frame, and a swing regulating link (62) is fixed to the sensing shaft (47).
1k to the shaft (417), and apply the support force of 6 springs (6 springs) to the shaft (417).
It is formed so that the load check 7f161 can be raised and lowered with the load check 7f161 being supported substantially horizontally, and the 10th tally switch (6F9) included in the forward/reverse operation limit switch (641 (65)') and the 8 of the forward/reverse limit switch (67).
) and ((70) 'e, the second and 30th tarry switches (71) and (72) are fixed to the sensing bracket (61), and the bracket (61) and each rotary switch ■i) ( 71) (721k Built in the above limit switch box (44).

As shown in FIGS. 8 to 10, the fixed contact (73)...
and movable contacts (7 contacts...all of the above limit switches (
641 (Ii5) fli7) fii8) (6!]
) ('/(Spring (75) which is prepared for each force and presses the movable contact (74) to the fixed contact (7□□□)
14) and the 10th Taliswitch (6t
;) A large fan-shaped first cam (70) having a long cam floor arrangement, and second and 30th tally switches (71) (
721 with a short cam floor
and the third cam (77) (781) is engaged with and pivoted on the sensing shaft (4n), and the chain guide (43
Each cam (76) (77) (78) interlocks with the swing of 1.
Form it so that it rotates. The above-mentioned reverse rotation operation and reverse rotation limit switch (65) and the movable contact (74) of +61 (70) are brought into contact with the sliding body (79)..., and the above-mentioned forward rotation operation and reverse rotation limit switch (Ii4)
The movable contact (r4) of (69) is fixed in the middle of the full prismatic sliding shaft member..., and the pressure roll that presses the first to third cams (7η (781) (8I)... the said sliding body (7
9)... and the sliding shaft (80)... and the stopper 571 at the end of the rotary chain (16).
When the chain guide (43) swings as the chain guide (43) comes into contact with the guide tubes (53) and (54), the sensing shaft (
・The rotation of one motor causes the forward rotation or reverse rotation operation limit switch (64) or (6) to be activated via the first cam (76).
5) is turned off, and further the chain guide f, 13 is turned off.
+ swings and the sensing shirt) (47) rotates, the forward rotation limit switch (6η (69) or reverse rotation limit switch (68) (70) is activated via the second and third cam +77) (78). When the reversible motor (1'O) of the chain block (14) is turned off, the forward/reverse operation limit switch (64) (liω is delayed after turning off and the forward/reverse limit switch (ill
(68) +70) is configured to turn off. Furthermore, the forward rotation limit switch (Jin sardine) l
The lock lever (8) keeps the movable contact f7.11... separated from the fixed contact (73) and non-conductive.
The sliding shafts are inserted into the through holes (84) of the lock levers (82, 83), and the notches (85) of the shafts (80) are provided.
... Tongue piece (86) that engages with the lock lever
(Through hole (84) of 821 (831)... is formed on the rim of the mouth, and a tongue piece (86) is formed in the notch (85)...
- A guide groove (88) for applying force to the lock lever (82) +831 and for guiding and regulating the sliding movement of the lock lever E (8). ... is fitted into the protrusion (goods)..., and as the sliding shirt (80) retreats, the tongue piece eave) engages with the notch hole), and the forward rotation limit switch (]; η (681)
The movable contact σ4) is formed so as to be supported apart from the fixed contact (73).

As shown in Fig. 11, the reversible motor μ7)'Th of the chain block (14) is rotated forward and the rotor chain ([6]
a forward rotation relay (!1lO) for hoisting the rotor chain (!11O), and a reversal relay (91) for reversing the reversible motor (17) to lower the rotor chain (161), and the forward/reverse manual operation switch (21). (22) and the forward and reverse rotation relay coil (93+9) of the forward and reverse relay j9[il (9]) through the forward and reverse operation limit switch f641151k
3) is connected to this operation power supply (!+4), and the forward and reverse rotation limit switch ([i7) (6■ and (Ii81 f7o)) and the forward and reverse rotation relay (90
) (91) forward/reverse switch (951 (via 961, this drive power supply (R, S, T) is connected to the reversible motor surface.
A self-holding forward limit switch (67) equipped with the lock lever +82) (83)
(The forward rotation switch (95! f
In a non-conductive state, the reversible motor (1?) can be arbitrarily reversed and driven only in one direction via the reversing switch (96), for example, when lifting a load, forward rotation limit switch f67) (6 When !It is activated, the motor (1?) e is reversed via the reversal switch 616i by turning on the reverse manual operation switch (22), and the load is lowered by lowering it onto the rotary chain 161'.
The forward rotation limit switch (67) (6S) is connected to the drive power source (S, T) through the reverse rotation limit switch (s) (70)', and the normal rotation limit switch (I
It is formed so that only the forward rotation switch (95) is held in a non-conductive state when the iη groaning operation is performed, and the forward rotation and reverse rotation switches (951i! 16) i are held in a non-conductive state when the reverse limit switch (l+8) (70) is activated. .

The present invention is constructed as described above, and includes a forward/reverse manual operation switch +231 (
2 = I + (Press 251 (261) to move the saddle (5) and trolley (8) back and forth and left and right K 11ffi, position it at any location on the chain block (141'), and attach the hook (15) at the tip of the rotary chain (16). ) K is used to raise and lower suspended cargo, and when the forward rotation manual operation switch (21) of the switch box (20) is pressed, the forward rotation relay (90
1 (7) The forward rotation switch (1) 9 is turned on by the excitation of the IJ rail (! Raise to desired height.

At this time, at the upper limit of hoisting the rotary chain (16), the stopper (57) at the proximal end of the hook (19) is connected to the loose guard spring (59).
When it comes into contact with the guide tube (53) through the sensor shaft (47), the normal rotation operation limit switch (
64) is displaced by the sliding shaft t81i1 cam (76), and the switch (l+4) k is turned off to stop the reversible motor (17), and the forward rotation switch f! 15! If the rotor chain (16) is burnt out and welded, the rotary chain (16) will be further hoisted without the motor surface stopping when the normal rotation operation limit switch (64) is turned off, but the sensing shaft ( 47), the forward rotation limit switch ((
The sliding shaft (81 (81) of Tsukasa (i!il) is displaced by the second and sixth cams (77) (78), and the lock lever (82) (83) engages with the shirt H80) fs■, Keep the switch (6η(69) 'e off and stop the reversible motor (17+). As mentioned above, keep the forward rotation limit switch (+7) 1B!1) off with the lock lever (82) ()t3+. When the forward rotation switch (95) is in a non-conductive state, the reverse manual operation switch (22) is pressed to energize the reverse relay coil (93) of the reverse rotation relay (91), and the reverse rotation switch (96) is turned on. The reversible motor (17) is reversed, lowered to the rotary chain (+6)' and the load on the hook (15) is lowered, and the welded normal rotation relay (90) is lowered.
Repair the lock lever (82 (83)) to disengage the notch (85) and tongue (86), and turn the forward rotation limit switch (67) (69) back on. The forward rotation manual operation switch (21) enables forward rotation of the reversible motor (17).As mentioned above, the forward rotation switch! gloss is welded and the forward rotation switch (95!) is immersed and the forward rotation limit is reached. When the switch fliη1lil is turned off, the reversible motor (17
), the reverse operation of the Seiden limit switch (6η((
+9) does not automatically turn back on, it prevents a short-circuit accident of the drive power supply (R, ST) due to the welded forward rotation switch (ri9), and allows the reversible motor (17) to be driven in the reverse direction at will. be.

Also, when the reverse manual operation switch (22)' of the switch box (20) is pressed, the reverse switch 616) is activated by excitation of the relay coil (93) of the reverse relay (91).
is turned on, the reversible motor (1 motor) is reversed and lowered to the funnel chain f161', and the load suspended from the hook ([5) is lowered F. At this time, the load suspended from the hook ([5]
) at the lower limit of lowering of the stopper (5 (
(to) is connected to the guide tube (54) via L7 through the core-impingement spring (GO).
When the sensing shaft (471) rotates, the reverse operation limit switch (6 glossy sliding body (791) is displaced by the first cam (76), and the switch (6
5) When the reversing operation limit switch (651) is turned off and the reversible motor (17) is stopped, if the reversing switch (96) is burnt out and welded, the motor (17) will not stop when the reversing operation limit switch (651) is turned off. Rothien (+
6i k 'E, but the roto chain (16)
Due to the rotation of the sensing shaft (4η), the sliding body of the reverse limit switch ll181 (70) (
79) (79) e 2nd and 3rd cam (771 (7
8), and the motor (1η) is stopped with the hook (151 lowered to the lower limit). When the reverse operation limit switch (681 (70) is turned off as described above, the reverse switch (96) is held non-conductive. At the same time, the forward rotation switch (95) connected to the switch ([+8) (70) through the forward rotation operation limit switch (6η(69)'f:) is also kept non-conductive, and the reverse rotation switch (
Hook of roto chain (16) when welding 96) ++5
1' with the forward rotation and reverse rotation switch (
This is to prevent forward and reverse driving of the reversible motor (17) by q5)+96) and repair the welded reversing relay (91).

In the above embodiment, the reversible motor tl'1 of the chenobrock (14) was controlled, but when the saddle (5) moves to the front and rear ends of the traveling rail (3), the forward/reverse operation and the forward/reverse limit switch (64) are controlled. (G) and (Ii force f6) tl
(l+9) By incorporating (70) so that it operates in a multi-stage delayed manner similar to the above embodiment, the saddle (5)
The reversible motor (7) can also be controlled in the same way as the chain block (14), and when the Toro IJ- (8) moves to the left and right ends of the beam (4), the limit switches (64) (to ) and (67) +68) ([i9)
By incorporating (70) to operate in the same way,
The reversible motor of the trolley (8) can also be easily controlled in the same manner as in the above embodiment.

1d As is clear from the above embodiment, the present invention provides a forward rotation switch (1 (9) and a drive power source (R, S,
Forward rotation limit switch (6η((+
91, reverse limit switch (Ii8) f7 (1)
When the forward rotation limit switch (Ii7) 1ii9) is activated, only the forward rotation switch θ) mark is connected, and when the reverse rotation limit switch (68) +70) is activated, the positive rotation It is configured to hold the rotation and reversal switches (!+51 (9fi) in a non-conductive state, for example, when the
4) and the reversible motor (7) t+01 (17) such as the electric trolley (8) and the electric saddle (5). During the drive, the reversing switch (96) is welded and always maintains a conductive state, so that the chain block In (14), the load hanging hook 115) side of the rotary chain (16) is fully extended, and the trolley (8) and the saddle (5)
), the reversible motor (force (1 (n) can be stopped and held by turning off the reverse limit switch (6 to (γ0)) while the chain block (14) and trolley ( The chain block (14), trolley (8) and saddle (5) can be stopped at a position F: 8) and the saddle (5) that is most convenient for repair, and can be installed at a relatively high place such as the ceiling of the factory. It is possible to perform repair work such as this safely, and it also prevents inconvenient operations such as lifting a load with the chain block (14) when the reversing switch (96) for lowering the load is welded. It has remarkable effects such as being able to handle it more easily.

[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 ten block, and Fig. 5 is its exploded view. 6 is a partially enlarged plan view, FIG. Figure 11 is an electrical circuit diagram. (17)...Reversible motor 11iηtli!11...Forward rotation limit switch (l
i81 (γ0)... Reverse limit switch (!15
! ...IE reversing switch (91i1... Reversing switch (R, S, T)... Drive power supply Applicant: Zojirushi Chain Block Co., Ltd. 1t. Agent: Tadashi Fujiwara f.

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 when the forward rotation limit switch is activated, only the forward rotation switch is activated, and the reverse rotation limit switch is activated. 1. A drive device for a cargo handling machine, characterized in that the forward rotation switch and the reverse rotation switch are respectively held in a non-conductive state.