CN218579520U - Double-brake amplitude changing device for crane - Google Patents

Abstract

The utility model provides a hoist is with two braking width of cloth devices relates to hoist technical field, and it is including becoming the width of cloth pull rod, it is provided with the rack assembly to become the width of cloth pull rod, the gear shaft is connected in the rack assembly transmission, the one end of gear shaft is provided with the low-speed axle stopper, the other end transmission of gear shaft is connected with the reducing gear box, the input transmission of reducing gear box is connected with becomes width of cloth driving motor and high-speed axle stopper. The beneficial effects of the utility model reside in that, in hoist working process, even the high-speed input shaft of reducing gear box breaks, it also can brake whole width of cloth device through low-speed axle stopper to avoid taking place the incident.

Description

Double-brake amplitude changing device for crane

Technical Field

The utility model relates to a hoist technical field, concretely relates to hoist is with two braking width of cloth devices.

Background

At present, a luffing device adopted by a crane usually adopts a high-speed shaft braking mode, namely a disc brake is arranged at the high-speed shaft end of a reduction gearbox of the luffing device. However, when the braking mode is adopted, if the high-speed shaft of the crane is broken in the operation process, the braking function cannot be achieved, and safety accidents are easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem provide a can realize dual braking's hoist with two braking amplitude of change devices to reinforcing hoist becomes amplitude of change device's braking security, reduces the emergence of incident.

In order to solve the technical problem, the utility model provides a technical scheme is: the double-brake amplitude changing device for the crane comprises an amplitude changing pull rod, wherein a rack assembly is arranged on the amplitude changing pull rod, the rack assembly is in transmission connection with a gear shaft, a low-speed shaft brake is arranged at one end of the gear shaft, the other end of the gear shaft is in transmission connection with a reduction gearbox, and the input end of the reduction gearbox is in transmission connection with an amplitude changing driving motor and a high-speed shaft brake. Therefore, in the working process of the crane, even if the high-speed input shaft of the reduction gearbox is broken, the whole amplitude variation device can be braked by the low-speed shaft brake, so that safety accidents are avoided.

The gear shaft is rotatably arranged on the supporting seat, a front end limiting block is arranged on one side, close to the crane luffing jib, of the gear shaft, a rear end limiting block is arranged on one side, far away from the crane luffing jib, of the gear shaft, and the gear shaft, the front end limiting block and the rear end limiting block are all located below the luffing pull rod; an upper limiting block is arranged above the gear shaft and is positioned above the amplitude-variable pull rod. Like this at the removal in-process that becomes width of cloth pull rod and rack assembly, the utility model discloses spacing piece, front end spacing piece and rear end spacing piece carry out high restriction and direction to becoming width of cloth pull rod and rack assembly on the accessible to avoid becoming width of cloth pull rod excessively to incline because of the atress inequality at the removal in-process.

The crane further comprises a rotary column amplitude changing platform, wherein the supporting seat, the amplitude changing driving motor, the reduction gearbox, the high-speed shaft brake and the low-speed shaft brake are all arranged on the rotary column amplitude changing platform and are arranged on the crane body through the rotary column amplitude changing platform.

Further, the rack assembly comprises a rack frame arranged on the variable amplitude pull rod, a rack guide plate is arranged on one side, close to the gear shaft, of the rack frame, a rack is connected to one side of the rack guide plate in a sliding mode, the rack is connected with the rack frame through a pin, therefore, the rack is stably arranged on the variable amplitude pull rod, and the relative position relation between the rack and the variable amplitude pull rod can be flexibly adjusted according to specific working conditions.

Furthermore, both ends of the rack are provided with stoppers, and the rack is prevented from excessively moving in the amplitude variation process through the stoppers.

Further, the high-speed shaft brake is a disc brake, and a brake disc of the high-speed shaft brake is mounted on the high-speed input shaft of the reduction gearbox.

Further, the low-speed shaft brake is a hydraulic brake, and a brake disc of the low-speed shaft brake is installed on the gear shaft.

According to the technical scheme, the utility model has the advantages of it is following: firstly, because the utility model is provided with two sets of brakes, in the working process of the crane, even if the high-speed input shaft of the reduction box is broken, the whole amplitude changing device can be braked by the low-speed shaft brake, thereby providing the braking safety of the whole amplitude changing device and avoiding safety accidents; secondly, because the utility model provides a low-speed axle stopper adopts the hydraulic brake as an organic whole with hydraulic pressure station and stopper, and it can also satisfy the space arrangement requirement when satisfying the braking requirement, reduces occupation space promptly.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention when installed on a crane.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a first schematic structural view of the joint of the medium support seat and the variable amplitude pull rod and rack assembly of the present invention.

Fig. 4 is a second schematic structural view of the joint of the medium support seat and the variable amplitude pull rod and rack assembly of the present invention.

Fig. 5 is a schematic structural view of the joint between the middle gear shaft and the support seat and between the middle gear shaft and the low-speed shaft brake.

In the figure: 1. the crane comprises a crane luffing jib, 2 a luffing pull rod, 3 a rotary column luffing platform, 4 a reduction gearbox, 5 a high-speed shaft brake, 6 a luffing driving motor, 7 a gear shaft, 8 a low-speed shaft brake, 9 a supporting seat, 10 a rear end limiting block, 11 an upper limiting block, 12 a front end limiting block, 13 a pin, 14 a rack guide plate, 15 a stop dog, 16 a rack, 17 and a rack frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to 5, the utility model provides a crane becomes width of cloth device with two brakings, it includes can become width of cloth pull rod 2 with crane becomes width of cloth arm 1 articulated, it is provided with the rack assembly to become width of cloth pull rod 2. Specifically, the rack assembly comprises a rack frame 17 installed on the variable amplitude pull rod 2, a rack guide plate 14 is arranged on one side of the rack frame 17, a rack 16 is connected to one side of the rack guide plate 14 in a sliding mode, the rack 16 is connected with the rack frame 17 through a pin 13, and stop blocks 15 are arranged at two ends of the rack 16.

The crane further comprises a rotary column amplitude varying platform 3 arranged on the crane body, a supporting seat 9 is arranged on the rotary column amplitude varying platform 3, an upper limiting block 11 is arranged at the upper part of the supporting seat 9, a front end limiting block 12, a gear shaft 7 and a rear end limiting block 10 are sequentially arranged at the lower part of the supporting seat 9 along the horizontal direction, the upper limiting block 11 is positioned right above the gear shaft 7, the front end limiting block 12 is positioned at one side of the gear shaft 7 close to the crane amplitude varying arm 1, and the rear end limiting block 10 is positioned at one side of the gear shaft 7 far away from the crane amplitude varying arm 1; the gear shaft 7 is rotatably mounted on the support base 9 and is meshed with a rack 16 in the rack assembly. Therefore, in the working process of the crane, the rack 16 and the variable amplitude pull rod 2 are driven to move by the rotation of the gear shaft 7 and the meshing relationship between the gear shaft 7 and the rack 16, so that the variable amplitude arm 1 of the crane is driven to perform corresponding actions.

In addition, a variable amplitude driving motor 6, a reduction box 4, a high-speed shaft brake 5 and a low-speed shaft brake 8 are further arranged on the rotary column variable amplitude platform 3. The input end of the reduction gearbox 4 is in transmission connection with the output end of the variable amplitude driving motor 6, and the high-speed shaft brake 5 is arranged on the high-speed input shaft of the reduction gearbox 4; the output end of the reduction gearbox 4 is in transmission connection with one end of a gear shaft 7, and the low-speed shaft brake 8 is arranged at one end, far away from the reduction gearbox 4, of the gear shaft 7. Like this in hoist working process, because the utility model discloses be provided with two sets of brakers, even the high-speed input shaft rupture of reducing gear box 4, it also can brake gear shaft 7 through low-speed axle brake 8.

In addition, the high-speed shaft brake 5 and the low-speed shaft brake 8 are both preferably disc brakes, and the low-speed shaft brake 8 is preferably a backpack type hydraulic brake that integrates a hydraulic station and a brake in an HSB series safety brake system manufactured by Jiangxihua five brakes GmbH.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. The double-brake amplitude changing device for the crane is characterized by comprising an amplitude changing pull rod, wherein the amplitude changing pull rod is provided with a rack assembly, the rack assembly is in transmission connection with a gear shaft, one end of the gear shaft is provided with a low-speed shaft brake, the other end of the gear shaft is in transmission connection with a reduction gearbox, and the input end of the reduction gearbox is in transmission connection with an amplitude changing driving motor and a high-speed shaft brake.

2. The double-brake amplitude varying device for the crane according to claim 1, further comprising a supporting seat, wherein the gear shaft is rotatably mounted on the supporting seat, a front end limiting block is arranged on one side of the gear shaft close to the amplitude varying arm of the crane, a rear end limiting block is arranged on one side of the gear shaft far away from the amplitude varying arm of the crane, and the gear shaft, the front end limiting block and the rear end limiting block are all positioned below the amplitude varying pull rod; an upper limiting block is arranged above the gear shaft and is positioned above the amplitude-variable pull rod.

3. The dual-brake amplitude varying device for the crane according to claim 2, further comprising a rotary column amplitude varying platform, wherein the support seat, the amplitude varying driving motor, the reduction gearbox, the high-speed shaft brake and the low-speed shaft brake are all mounted on the rotary column amplitude varying platform.

4. The double-brake amplitude changing device for the crane according to claim 1, 2 or 3, wherein the rack assembly comprises a rack frame arranged on the amplitude changing pull rod, a rack guide plate is arranged on one side of the rack frame close to the gear shaft, a rack is slidably connected to one side of the rack guide plate, and the rack is connected with the rack frame through a pin.

5. The double-brake amplitude varying device for the crane as claimed in claim 4, wherein the two ends of the rack are provided with stoppers.

6. A dual brake horn device for cranes as claimed in claim 1, 2 or 3, wherein the high speed shaft brake is a disc brake.

7. A dual brake horn device for cranes as claimed in claim 1, 2 or 3, wherein the low speed shaft brake is a hydraulic brake.

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