Anti-falling device of pneumatic hoist

Abstract

The utility model discloses an anti-falling device of a pneumatic hoist. The anti-falling device comprises a pneumatic motor, a taper brake, a one-way control device and a pneumatic locking device. The brake seat of the taper brake is arranged on the shell of the pneumatic motor; and the brake disc of the taper brake is arranged outside the input shaft of the speed reducer. An outer spline is arranged on the outer side of a one-way bearing of the one-way control device, and an inner spline sleeve is arranged on a machine shell of the pneumatic motor. A spring is arranged in the inner spline sleeve and pushes the one-way bearing to move axially. A brake disc of the taper brake works, and a slip ring pushes a one-way bearing to enter an inner spline sleeve; a locking plate is arranged on a push rod of the pneumatic locking device, and the one-way bearing is prevented from sliding out of the inner spline sleeve. In the lifting process of the pneumatic hoist, the rotating direction of the pneumatic motor is limited, only lifting work can be conducted, and falling accidents caused by equipment faults are effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of anti-falling devices of pneumatic hoist, it is related to pneumatic hoisting equipment technical field. BACKGROUND

[0002] The pneumatic hoist of current market has the advantages such as strong load capacity, easy to use, but brake failure is easily caused in hoisting process, causes hoisting object to slide swing or fall;Therefore, the pneumatic hoist needs to be designed to prevent falling. SUMMARY

[0003] The utility model aims at providing a kind of anti-falling devices of pneumatic hoist, prevent hoisting object from sliding swing or falling due to equipment failure in hoisting process.

[0004] In view of the above technical problem, the utility model provides a kind of anti-falling devices of pneumatic hoist, including pneumatic motor, taper brake, one-way control device and pneumatic locking device.The transmission shaft of pneumatic motor is provided with spline sleeve, and the spline shaft head of the input shaft of speed reducer is installed in the spline sleeve.Taper brake brake seat is set on the shell of pneumatic motor;The brake seat is sleeved on the outside of transmission shaft.Taper brake brake disc is set on the outside of the input shaft of speed reducer;The inner ring of the brake disc is provided with slip ring.One-way bearing of one-way control device is set on the outside of spline sleeve, and the one-way bearing is movably connected with spline sleeve by spline.The outside of one-way bearing is provided with outer spline, and the inner spline sleeve is set on the shell of pneumatic motor;Spring is set in the inner spline sleeve, and the one-way bearing is axially moved by spring push.Brake disc works, and slip ring pushes one-way bearing into inner spline sleeve;During hoisting brake process of pneumatic hoist, the rotation direction of pneumatic motor is limited to only hoisting work, effectively prevent hoisting object from falling due to gravity when brake failure.Push rod of locking cylinder of pneumatic locking device passes through the through hole on brake seat;Locking plate is set on the push rod, and the slip ring of brake disc pushes one-way bearing into inner spline sleeve, and the locking plate of pneumatic locking device prevents one-way bearing from sliding out of inner spline sleeve.Locking plate moves to reset, and the rotation direction of pneumatic motor is not limited after one-way bearing slides out of inner spline sleeve.

[0005] Preferably, taper brake is set on the other end of pneumatic motor shell, and the locking plate of pneumatic locking device is set in the sliding groove on one-way bearing.

[0006] Based on the above technical scheme, the utility model at least has following beneficial effects one of which:

[0007] 1, the utility model provides a kind of anti-falling devices of pneumatic hoist, and one-way control device taper brake is combined and set, and the structure is simple, and the anti-falling performance is superior;

[0008] 2, the effective prevention of one-way bearing from the inner spline sleeve, the direction of rotation of the pneumatic motor is limited to only lifting work, further enhance the anti-falling performance. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 is a working schematic diagram of the anti-falling device of the pneumatic hoist of the utility model.

[0010] Figure 2 is another installation schematic diagram of the pneumatic locking device of the utility model. DETAILED DESCRIPTION

[0011] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the following is combined with specific embodiment, and the utility model is further explained in detail with reference to the drawings.

[0012] As Figure 1 shown, an anti-falling device of a pneumatic hoist, including pneumatic motor 1, taper brake 11, one-way control device 21 and pneumatic locking device 31. The transmission shaft 2 of pneumatic motor 1 is provided with spline sleeve 3;The one end of the pneumatic motor 1 is provided with speed reducer 4, and the spline shaft head 5 of the input shaft 6 of the speed reducer 4 is arranged in the spline sleeve 3. The brake seat 12 of taper brake 11 is arranged on the shell of pneumatic motor 1, and the brake seat 12 is sleeved on the outside of transmission shaft 2. The brake disc 13 of taper brake 11 is arranged on the outside of the input shaft 6 of the speed reducer 4, and the slip ring 14 is arranged on the inner ring of brake disc 13. The one-way bearing 22 of one-way control device 21 is arranged outside the spline sleeve 3;The one-way bearing 22 is movably connected with the spline sleeve 3. The outer side of one-way bearing 22 is provided with outer spline 23, and the shell of pneumatic motor 1 is provided with inner spline sleeve 24, and the inner spline sleeve 24 is provided with spring 25, and the spring 25 pushes the one-way bearing 22 to move axially. When brake disc 13 works, slip ring 14 pushes one-way bearing 22 into inner spline sleeve 24;During the lifting brake process of pneumatic hoist, the direction of rotation of pneumatic motor 1 is limited to only lifting work, effectively preventing the falling of hoisting object due to gravity when brake fails;When brake disc 13 stops working, one-way bearing 22 is pushed out of inner spline sleeve 24 under the action of spring 25, and the direction of rotation of pneumatic motor 1 is not limited. The push rod 33 of locking cylinder 32 of pneumatic locking device 31 passes through the through hole on brake seat 12;Locking plate 34 is arranged on push rod 33. When slip ring 14 of brake disc 13 pushes one-way bearing 22 into inner spline sleeve 24, locking plate 34 of pneumatic locking device 31 prevents one-way bearing 22 from sliding out of inner spline sleeve 24. When locking plate 34 of pneumatic locking device 31 resets, one-way bearing 22 slides out of inner spline sleeve 24, and the direction of rotation of the pneumatic motor 1 is not limited. Figure 2As shown, the taper brake 11 is arranged at the other end of the pneumatic motor 1 housing, the locking plate 34 of the pneumatic locking device 31 is arranged in the sliding groove 35 on the one-way bearing 22; the locking cylinder 32 controls the displacement of the one-way bearing 22, and the structure is simpler.

[0013] So far, the embodiment of the utility model, the introduction is completed.

[0014] The above-described specific embodiments further specifically describe the purpose, technical scheme and beneficial effects of the utility model, and it should be understood that the above-described specific embodiments are merely specific embodiments of the utility model and are not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A fall arrest device for a pneumatic hoist, characterized in that It includes: Pneumatic motor (1), its transmission shaft (2) is provided with spline sleeve (3); the spline shaft head (5) of the input shaft (6) of the reducer (4) installed at one end of the pneumatic motor (1) is arranged in the spline sleeve (3); Conical brake (11), brake seat (12) is arranged on the shell of pneumatic motor (1), the brake seat (12) is sleeved on the outside of transmission shaft (2); the brake disc (13) of the conical brake (11) is arranged on the outside of the input shaft (6) of the reducer (4); the slip ring (14) is arranged on the inner ring of the brake disc (13); One-way control device (21), one-way bearing (22) is arranged on the outside of the spline sleeve (3), the one-way bearing (22) is movably connected with the spline sleeve (3); the outer spline (23) is arranged on the outside of the one-way bearing (22), the inner spline sleeve (24) is arranged on the shell of the pneumatic motor (1); the spring (25) is arranged in the inner spline sleeve (24), the spring (25) pushes the one-way bearing (22) to move axially; the brake disc (13) works, the slip ring (14) pushes the one-way bearing (22) into the inner spline sleeve (24); during the lifting brake process of pneumatic hoist, the rotation direction of the pneumatic motor (1) is limited to lifting work only, which effectively prevents the lifting object from falling due to gravity when the brake fails; Pneumatic locking device (31), the push rod (33) of locking cylinder (32) passes through the through hole on the brake seat (12); the locking plate (34) is arranged on the push rod (33), the slip ring (14) of the brake disc (13) pushes the one-way bearing (22) into the inner spline sleeve (24), the locking plate (34) of the pneumatic locking device (31) prevents the one-way bearing (22) from sliding out of the inner spline sleeve (24); the locking plate (34) of the pneumatic locking device (31) resets, the one-way bearing (22) slides out of the inner spline sleeve (24), and the rotation direction of the pneumatic motor (1) is not limited.

2. A fall arrest device for a pneumatic hoist according to claim 1, characterised in that: The conical brake (11) is arranged at the other end of the shell of the pneumatic motor (1), and the locking plate (34) of the pneumatic locking device (31) is arranged in the sliding groove (35) on the one-way bearing (22).

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