JP2589121Y2 - Large hoist with fine speed mechanism - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a large hoist with a fine speed mechanism.

[0002]

2. Description of the Related Art FIG. 5 is a longitudinal sectional view of a main body of a conventional large hoist having a fine speed mechanism up to 20 tons, 1 is a main motor, and 2 is an intermediate shaft connected to a rotating shaft 1a of the main motor 1. ,
Reference numeral 3 denotes a brake shaft connected to the intermediate shaft 2, and reference numeral 4 denotes a drum through which the intermediate shaft 2 is inserted. A wire rope 5 is wound around the drum 4 for lifting loads via hooks. The drum 4 is in mesh with the gear 3a of the brake shaft 3 via a first reduction gear 6 of a planetary gear type. Two brake wheels 7 are movably provided on a spline portion 3 b formed at an end of the brake shaft 3, and the support 8 is connected to a rotating shaft 1 of a low-speed motor 10 via a second reduction gear 9.
0a. Further, a brake 11 is provided on the low-speed motor 10.

On the other hand, guide pins 12 are attached to the support 8 at equal intervals in the circumferential direction, and brake discs 13 and 14 are provided slidably along the guide pins 12. Also, a bracket 15 for covering a brake wheel or the like.
An armature 19 is attached to the armature via an attachment pin 18 and a DC magnet 16 is provided.
A coil 17 is embedded in the magnet 16, and a brake spring 22 is provided between the DC magnet 16 and the brake disk 13 via a bearing 20 and a top 21.
Reference numeral 43 denotes an oil ring provided at a contact portion of the bracket 15 with the support 8, and reference numerals 32 to 34 denote brackets.
The drum 4 is rotatably supported by brackets 32 and 33 via bearings 30 and 31, and the support 8 is rotatably supported by a bracket 34 via bearings 29. The brake shaft 3 is rotatably supported by a bracket 34 via a bearing 37.

[0004] Next, the operation of the large hoist with the fine speed mechanism having the above configuration will be described. When the rotation shaft 1a of the main motor 1 is rotated, this rotation is transmitted through the intermediate shaft 2 to the brake shaft 3a.
To the drum 4 via the first reduction gear 6 from the gear portion 3a. Therefore, it is possible to raise and lower the luggage hung on the wire rope 5. At this time, brake shaft 3
The coil 17 is excited so as not to be braked, and the brake disk 13 is pulled to the left against the brake spring 22 so that the brake disks 13, 14 and the brake wheel 7
And keep apart.

Next, when rotating the drum 4 at a low speed, the excitation of the coil 17 is stopped, and the rotating shaft 10a of the low-speed motor 10 is rotated. This rotation is transmitted to the brake shaft 3 by contact between the brake wheel 7 and the brake discs 13 and 14 via the second reduction gear 9 and the support 8, and is transmitted to the drum 4 via the first reduction gear 6. Drum 4
Rotates at a very slow speed. Here, when the brake 11 is applied,
The rotation of the drum 4 stops.

FIGS. 6 (a) and 6 (b) are a front view and a vertical sectional side view of the armature 19, in which 23 is a bolt, 24 is a double screw bolt, and 25 is an insertion hole for the mounting pin 18. FIG.
(A) and (b) show a front view and a vertical sectional side view of the DC magnet 16 and the coil 17, wherein 16 a is an insertion hole of the mounting pin 18, and 26 is a cable inserted through a bush 27.

[0007]

In the above-described conventional large hoist with a fine speed mechanism, an amateur 1
The weight of the DC magnet 9 and the DC magnet 16 was increased, and work was difficult during assembly and disassembly. At the time of assembly, the top 21 is attached to the brake disc 13 via the bearing 20.
After the brake spring 22 is fitted into the top 21, the DC magnet 16 is compressed into the brake spring 22 and inserted into the mounting pin 18, and the armature 19 is inserted into the mounting pin 18 and tightened with the nut 28. This operation was not easy due to the presence of the brake spring 22. The support 8 is fitted to a bracket 34 via a bearing 29. When disassembled, the guide pins 1
2 was pulled out, but the weight was large, and the disassembly and assembly work became difficult due to the resistance of the oil ring 27 and the like.

The present invention has been made to solve the above-described problems, and has as its object to obtain a large hoist with a fine speed mechanism that can be easily disassembled and assembled.

[0009]

According to a first aspect of the present invention, there is provided a large hoist with a fine speed mechanism, wherein a magnet and an arm are provided with an engaging portion which can be suspended by a hoist.

According to a second aspect of the present invention, there is provided a large hoist with a slow speed mechanism, wherein a frame connected to a brake disk via a second bearing is provided, and a brake spring is provided between the frame and the frame. It is provided with a magnet.

According to a third aspect of the present invention, there is provided a large hoist with a slow speed mechanism, wherein a tap hole is provided at a tip end of a guide pin erected on a support rotatably supported on a bracket via a first bearing, and an armature is provided. A pull-out bolt screwed into the tap hole is detachably attached to a position corresponding to the guide pin.

[0012]

According to the first aspect of the present invention, the magnet and the armature are provided with an engaging portion that can be hung by the hoist, and the magnet and the armature are suspended and moved by the hoist during disassembly and assembly.

According to a second aspect of the present invention, the top, the magnet, and the brake spring are previously integrated into one body, and the integrated body is fitted between the second bearing and the mounting pin.

According to a third aspect of the present invention, a tap hole is formed at the tip of the guide pin erected on the support, and a pull-out bolt screwed with the tap hole at a position corresponding to the guide pin of the amateur is detachably provided. The support is pulled out from the first bearing by being attached and screwing a pull-out bolt for disassembly into the tap hole of the guide pin.

[0015]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of the main body of a large hoist with a slow speed mechanism according to this embodiment. Reference numeral 35 denotes a piece fitted to the brake disk 13 via a bearing 20, and reference numeral 36 denotes a mounting pin opposed to the brake disk 13. The DC magnet 36 has the coil 17, the brake spring 22 is provided between the DC magnet 36 and the top 35, and the DC magnet 36 is integrated with the top 35 by bolts 39. An armature 38 is attached to the attachment pin 18 by a nut 28. A tap hole 12 a is provided at the tip of the guide pin 12 erected on the support 8, and a hole 38 is provided at a position corresponding to the guide pin 12 of the amateur 38.
a is provided.

2 (a) and 2 (b) show a front view and a longitudinal side view of the armature 38, wherein 38a is a hole for mounting a pull-out bolt, 38b is a hole for inserting the mounting pin 18, and 38
c is an engaging portion (fusing hole) for lifting by a hoist such as a hoist or a chain block, and 40 is a handle attached to the amateur 38. FIGS. 3A and 3B show DC.
A front view and a vertical sectional side view of the magnet 36 are shown in FIG.
Is an insertion hole of the mounting pin 18, 36b is a screw hole of the bolt 39, and 36c is an engaging portion (cast hole) with the hoist. FIG.
Shows a cross-sectional view of the top 35, and 35a denotes an insertion hole for the bolt 39. Other configurations are the same as the conventional one.

In the above configuration, the operation as a hoist is the same as the conventional one. Here, amateur 38 and DC
As shown in FIGS. 2 and 3, the magnet 36 is provided with engaging portions 38c, 36c with the hoist, respectively, so that the amateur 38 and the DC magnet 36 can be carried by one person using the hoist. , Assembly and disassembly work became easier. Note that the engaging portions 38c and 36c are formed in a yodder shape or a cast hole so that machining or the like is not required.

The DC magnet 36 is integrated with the top 35 by bolts 39, and the brake spring 22 is provided between the DC magnet 36 and the DC magnet 36.
By inserting the magnet 36 into the mounting pin 18,
These members can be easily assembled. Further, a tap hole 12a is provided at the tip of the guide pin 12, and a hole 38a is provided at a position corresponding to the guide pin 12 of the armature 38. When the support body 8 is disassembled, a nut 42 is inserted into the hole 38a. By attaching the pulling bolt 41 and screwing the pulling bolt 41 into the tap hole 12a of the guide pin 12, the support 8 can be pulled out, and the disassembling operation can be facilitated.

[0019]

As described above, according to the first aspect of the present invention, the magnet and the armature are provided with the engaging portions with the lifting machine, and these can be carried by one person using the lifting machine. , Assembly and disassembly work can be facilitated.

According to the second aspect of the present invention, the top and the magnet are integrated, and a brake spring is provided between the top and the magnet.

According to a third aspect of the present invention, a tap hole is provided in the guide pin, and a hole is provided in a position corresponding to the guide pin of the armature. By screwing into the tap hole of the guide pin, the support can be pulled out, and the disassembling operation can be facilitated.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main body of a large hoist with a slow speed mechanism according to the present invention.

FIG. 2 is a front view and a vertical side view of an amateur according to the present invention.

FIG. 3 is a front view and a vertical sectional side view of the DC magnet according to the present invention.

FIG. 4 is a sectional view of a top according to the present invention.

FIG. 5 is a sectional view of a main body of a conventional large hoist with a slow speed mechanism.

FIG. 6 is a front view and a vertical sectional side view of a conventional amateur.

FIG. 7 is a front view and a vertical sectional side view of a conventional DC magnet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Main motor 1a ... Rotating axis 3 ... Brake axis 4 ... Drum 5 ... Wire rope 7 ... Brake wheel 8 ... Support body 10 ... Slow-speed motor 11 ... Brake 12 ... Guide pin 12a ... Tap hole 13, 14 ... Brake disc 15, 34 ... Bracket 17 ... Coil 18 ... Mounting pin 20,29 ... Bearing 22 ... Brake spring 35 ... Top 36 ... DC magnet 38 ... Amateur 38a ... Hole 39 ... Bolt 41 ... Pull out bolt

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-52-139868 (JP, A) JP-A-53-116659 (JP, A) JP-A 2-127696 (JP, U) JP-A 63-139868 1893 (JP, U) Japanese Utility Model 62-171591 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B66D 5/30 B66D 5/14 F16D 55/36

Claims (3)

(57) [Scope of request for utility model registration] 1. A main motor, a brake shaft connected to a rotation shaft of the main motor, a drum driven by the brake shaft to wind a wire rope for lifting a load, and a brake shaft movably in an axial direction. A mounted brake wheel, a support rotatably supported by a bracket via a first bearing and driven by a slow motor with a brake, a guide pin erected on the support, and an axial A brake disk movably mounted, a mounting pin erected on a bracket, a magnet inserted into the mounting pin facing the brake disk and having a coil, and a brake disposed between the brake disk and the magnet Large hoist with fine speed mechanism equipped with a spring and an armature attached to a mounting pin on the side of the magnet opposite to the brake spring A large hoist with a fine speed mechanism, wherein an engaging portion which can be lifted by a lifting machine is provided on the magnet and the armature. 2. A main motor, a brake shaft connected to a rotation shaft of the main motor, a drum driven by the brake shaft to wind a wire rope for lifting a load, and a brake shaft being movable in the axial direction. A mounted brake wheel, a support rotatably supported by a bracket via a first bearing and driven by a slow motor with a brake, a guide pin erected on the support, and an axial A brake disk movably mounted, a mounting pin erected on a bracket, a top connected to the brake disk via a second bearing, and a brake spring integrated between the top and the top. Provided,
A large hoist with a fine speed mechanism, comprising a magnet having a coil and inserted through the mounting pin, and an armature mounted on the mounting pin on the side opposite to the brake spring of the magnet. 3. A main motor, a brake shaft connected to a rotation shaft of the main motor, a drum driven by the brake shaft to wind a wire rope for lifting loads, and a brake shaft that is movable in the axial direction. A mounted brake wheel, a support rotatably supported by a bracket via a first bearing and driven by a slow motor with a brake, a guide pin erected on the support, and an axial A brake disk movably mounted, a mounting pin erected on a bracket, a magnet inserted into the mounting pin facing the brake disk and having a coil, and a brake disposed between the brake disk and the magnet Large hoist with fine speed mechanism equipped with a spring and an armature attached to a mounting pin on the side of the magnet opposite to the brake spring A large-sized hoist with a fine-speed mechanism, characterized in that a tap hole is provided at the tip of the guide pin, and a pull-out bolt screwed with the tap hole is detachably mounted at a position corresponding to the guide pin of the amateur. .