JPS58180843A - Brake apparatus - Google Patents

Abstract

PURPOSE:To construct a brake apparatus in a flat shape so as to make it small and thin, by arranging an attraction plate having a through-hole with a diameter larger than the diameter of a pinion shaft diameter and a brake spring at the center of a fixed armature. CONSTITUTION:The brake spring 9 having an inner diameter larger than the pinion shaft diameter at the center of a yoke 14a containing an armature, etc. is housed in a case 17. The attraction plate 10 has the hole through which the pinion 7 can pass and is provided with a notch that can engage together with the brake disk with a yoke leg 14b. Between the attraction plate 10 and the yoke leg 14a, there is a brake gap delta required for the attraction to provide a braking force by the brake spring 9. The armature 8 is made flat by a bobbin case 20, and is housed in the yoke 14a, and when the switch is turned on, a magnetic force is generated in the yoke 14a to attract the attraction plate 10 thereby making a gap between the attraction plate so that smooth rotation can be effected.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a brake device for a loading machine, and in particular, the flat shape of the brake device is improved by the shape of a suction plate that can cope with changes over time and the shape of a brake spring that is an elastic body. The present invention is characterized by a structure that can be easily constructed, and relates to a shape suitable for a brake device.

In conventional brake devices, the shape of the suction plate, pressure plate, etc. becomes complicated and large in order to accommodate changes over time due to the protrusion of the rotating shaft that attaches the brake wheel, which is a single rotation part. There are potential drawbacks and problems that require brake adjustment.

An object of the present invention is to provide a brake device in which a brake spring necessary for braking is disposed in the center of a fixed armature, and is opposed to a brake wheel disposed on a pinion shaft engaged with a motor shaft. We provide a suction plate with a through-hole that is larger than the pinion shaft diameter and a brake device that includes the inner diameter of the brake spring, which is necessary to accommodate changes in the diameter of the suction plate and brake displacement over time and to achieve a flat shape. It's about doing.

In the conventional configuration of a brake device, since the brake device is large and complicated, a part of the suction plate and a hole that is larger than the inner diameter t1 of the brake spring and the pinion shaft diameter are provided, and each part of the brake braking surface is A shape effective for dealing with wear over time is formed, a flat shape can be easily constructed without being limited to the shape of the pinion shaft, unitization is achieved, and a new component tube is adopted.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

The first section is an overall configuration diagram of a hoisting machine that adopts the present invention, where hook l is a hook for installing pipes in the hoisting machine;
The load force is hoisted up and lowered by a lower hoist 3. When the power is turned on, the motor 4 urges a pinion 7 to rotate in forward and reverse directions through a coupling 5, and is disposed inside a gear case 6 to raise and lower a load using nine reduction gear stages.

The brake device that is attached to a part of the hoisting machine described above is attached to the frame 13 that constitutes the main body, and has an extruded hole that fits into the bearing 16 that receives the pinion 7, and is fitted to the frame 13. A brake jib 12 having an extruded shape,
The suction operation of the suction plate 10 is performed by a brake wheel 11 necessary for rotational braking, which is disposed on a pinion 7, and a cylindrical rod 8 characterized by a flat shape housed in a yoke 14 having a plurality of mounting legs. During braking, the structure is such that braking is performed by a brake pressing spring 9 placed at the center S of the yoke 14, and the main body cuff <-15
(Accommodated in II in D. In addition, the suction plate 10 has a hole At that is effective for penetrating the pinion 7, and the suction plate 1G opposite to the brake wheel 11 and the brake jib 12 due to changes over time. In response to wear, the pinion 7 passes through the suction plate 10 to prevent the suction plate 10i from being pushed forward due to changes in diameter, thereby achieving smooth braking, and at the same time, the central part of the armature 8 By making the inner diameter of the brake push spring 9 larger than the shaft diameter of the pinion 7, the brake push spring 9 is positioned inside the brake push spring 9 through the through hole At of the pinion 7L suction plate 1°, and the brake To prevent problems such as chest adjustment and to prevent complication of the structure, the brake device is constructed so that a flat and thin 4111!Lt can be obtained.

The operation of the brake device of the present invention constructed from the above-mentioned components will be explained below.

FIG. 2 shows a configuration diagram of a brake device according to the present invention, in which a yoke 14m that stores an armature, etc. has a plurality of yoke legs 14.
bi- It is characterized by being integrally formed and is attached to the frame via a through bolt 19. A spring case 17, which is necessary for gathering the brake springs, is attached to the center of the yoke 14a using mounting screws 18, thereby making the brake device thinner. The outer periphery of the suction plate 10 and the brake jib 12 is provided with a notch fr that engages with the spinning yoke leg.
It is installed by f&. FIG. 3 shows a cross-sectional structural view of FIG. 2, and shows the state during normal braking. Suction plate IO and yoke 14
A brake gap δ is provided between the end face and the end face of a, and a braking force is applied by a brake presser 9. The machine 8 is formed into a flat shape by a bobbin case 20, is accommodated in a yoke 148, and is attached and fixed in a assembled state to a mounting screw 18 via a spring case 17. Yoke 14a when the power is turned on
When a voltage is applied to generate a magnetic force, the suction plate lO performs a suction operation, and the rotation of the brake wheel 11 is caused by the pinion 7.
The brake gear 12 is biased by the bearing 16 and rotates, and a gap is generated between the brake disk 12, the suction plate 1O, and the brake wheel, so that a smooth rotational operation can be obtained. With this configuration, the yoke 141 is made into a flat shape, placed in the center of the brake pressing spring 9ft, and engaged with the yoke leg 14bK, the brake jib 12, and the suction plate lOt, and the brake wheel 11' necessary for braking.
By configuring it with a sub-assembly at interposed therebetween, it is possible to have an exposed configuration, making the brake device maintenance-free, and eliminating the need to adjust the brake gap δ just by changing the dimensions of the yoke leg 14b. #! Figure 4 is a detailed drawing of the suction plate IO, which has a notch Il larger than the outside diameter of the yoke leg, and is a diagram in which a plurality of notches St- are arranged, which are effective when braking the rotation of the brake wheel. FIG. 5 is a cross-sectional view of Moo A' in FIG. 4, and the through hole A in the center is a relief for the pinion and is effective for downsizing. FIG. 6 shows the details of the brake brake 12, which has a plurality of extruded shapes, each extruded end being parallel to the frame, and has a shape that ensures complete braking when braking. t, is the notch in Figure 4 of the spindle! , has the same configuration as . Fig. 7 is a sectional view taken along line AA in Fig. 6, which fits into the outer diameter of the extruded hole A' bearing and is effective for unitizing the device, and the dimension t from the braking surface of the end face of the extruded hole A'. According to the above-mentioned brake device of the present invention, which is characterized by a structure in which the plurality of extruded portions t on the contact surface with the frame are formed with smaller dimensions, parts can be reduced and the brake device can be easily operated. The structure allows you to obtain Nissin brake braking, and the minute brake gap 1
-: Is fixed, no brake gap! 14 parts, is maintenance free, is inexpensive, and improves workability.

As described above, the present invention provides the following effects.

(1) Fixed armature for suction f - flattened, a brake spring necessary for the braking force of the brake is placed in the center of the fixed armature, and a yoke [1! Several mounting leg tubes are integrally formed. By configuring the mounting leg to include a notch in a part of the movable suction plate necessary for braking and a through hole for the pinion shaft, the brake device can be made smaller and thinner.

(2) In the above configuration, the brake gap is determined by processing and setting the height of the mounting leg, so the brake gap can be adjusted without any adjustment.

(3) Since the brake gap can be adjusted by adjusting the height of the mounting legs, it is possible to set a minute brake gap, which shortens braking time and reduces brake suction noise.

(4) The brake lining part has an unparalleled rounded structure and the main force bar is scattered, making it possible to visually check the brake gap that attracts the magnet, improving maintainability.

(5) d-iron and mounting leg tube integrated, brake disc,
Since the brake wheel, the suction plate 1 and the foot rack guide are integrated into a unit, it is possible to reduce the number of parts and improve ease of assembly, thereby providing an inexpensive brake device.

[Brief explanation of the drawing]

@ Figure 1 is a partial sectional view of the hoisting machine installed in this equipment, Figure 2
The figure is a front view of the device, Figure 3 is a sectional view taken along line A-A' in Figure 2, Figure 4 is a plan view of the suction plate, and Figure 5 is A-A in Figure 4.
6 is a front view of the brake valve, and FIG. 7 is a sectional view taken along line AA' in FIG. 6. l...Hook, 2...Che 7, 3...Lower hanging tool,
4... Motor, 5... Coupling, 6... Gear case, 7... Pinion, 8... Armature, 9...
Brake push spring, IO... Suction plate, 11... Brake wheel, 12... Brake desk, 13... Frame, 14m... Yoke, 14b... Yoke leg, 15...
・Body cover, 16...Bearing, 17...Spring case, 18...Mounting screw, 19...Through agent Masumushi Shoko 1-8'! 420 A ¥! -30 ￥4 figure HA8' 6 figure grass 5 eyes

Claims (1)

[Claims] 1. A brake device for a loading machine that uses electromagnetic force as its drive source to brake the load. A plate and a coil spring, which is an elastic body necessary for braking, are provided in the center of the fixed armature, and like the suction plate, the brake spring is formed with an inner diameter larger than the pinion shaft diameter, A brake device characterized in that the pinion shaft is configured such that the pinion shaft can protrude from and pass through the surface of the suction plate when the brake wheel, the brake disk, and the suction plate wear out due to radial changes.