CN213834357U

CN213834357U - Winch shaft breakage prevention device

Info

Publication number: CN213834357U
Application number: CN202022491298.4U
Authority: CN
Inventors: 何前; 赵志仁; 焦铁柱; 藏隆超
Original assignee: Chengdu Environmental Engineering Construction Co ltd
Current assignee: Chengdu Environmental Engineering Construction Co ltd
Priority date: 2020-11-02
Filing date: 2020-11-02
Publication date: 2021-07-30
Anticipated expiration: 2030-11-02

Abstract

The utility model relates to a passenger traffic ground cable car safety technical field discloses a winch prevents disconnected axle device. Comprises an arc bracket, a rocker arm and a lead screw for fixing the rocker arm. Arc grooves are formed in the arc bracket and the rocker arm, the arc grooves are wrapped on the annular winch brake disc and the rope blocking plate, a certain gap is kept between the arc grooves and the outer edges of the annular winch brake disc and the rope blocking plate, and the winch does not interfere with the rotation of the roller during normal operation. The rocker arm and the lead screw are fixed on the support, and the rocker arm and the lead screw can be detached, so that the winch roller and the main shaft can be conveniently overhauled. The support and the arc-shaped bracket are fixed on a foundation by adopting foundation bolts. By the device, when the winch is broken, the roller is limited by the arc-shaped grooves arranged on the arc-shaped bracket and the rocker arm, so that the roller is prevented from falling off or flying out. The winch shaft breakage preventing device better ensures the safety of equipment operation.

Description

Winch shaft breakage prevention device

Technical Field

The utility model relates to a passenger traffic ground cable car safety technical field specifically is a winch prevents disconnected axle device.

Background

The cable car is a transport machine which uses a winch to drive a steel wire rope to pull a carriage to run along a track which is laid on the ground and has a certain gradient and is used for lifting or lowering people and goods.

Most of the prior passenger ground cable cars are driven by double-roller winches, and the main shafts of the double-roller winches are longer and become parts with great potential safety hazards under the action of the pulling force of two traction steel wire ropes and the gravity of rollers. The new cable car safety specification requires that the broken shaft protection of the winch main shaft must be designed to prevent the roller from falling off or flying out when the main shaft is broken, so as to ensure the absolute safety of passengers.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a disconnected axle device is prevented to winch to the existence broken axle of main shaft that provides in solving above-mentioned background art and can't ensure safe problem.

In order to realize the purpose of the utility model, the utility model adopts the technical proposal that: a winch shaft breakage prevention device comprises a roller, wherein a plurality of annular brake discs are sleeved on the roller, a plurality of arc-shaped brackets for preventing the roller from popping out are arranged on each annular brake disc along the circumferential direction, arc-shaped grooves are formed in the arc-shaped brackets, the edges of the annular brake discs extend into the arc-shaped grooves, and gaps are formed between the edges of the annular brake discs and the inner walls of the arc-shaped grooves; the support mechanism is used for fixing the arc-shaped bracket.

Preferably, the number of the arc-shaped brackets is 3.

Preferably, the supporting mechanism comprises a bracket and a rocker arm assembly, and the two arc-shaped brackets positioned at the lower part of the annular brake disc are both connected to the bracket;

the rocker arm assembly comprises two supports, one of the supports is hinged with a rocker arm, one end of a third arc-shaped bracket is installed on the rocker arm, the other end of the third arc-shaped bracket is connected with a lead screw, and the lead screw is fixed on the other support.

Preferably, the number of the annular brake discs is 3, two of the annular brake discs are respectively arranged at two ends of the roller, and the third annular brake disc is arranged in the middle of the roller.

Preferably, the lead screw is made of 45# steel.

The beneficial effects of the utility model are concentrated and are embodied in: 1. after the winch is broken, the roller is limited by the arc-shaped bracket, so that the roller is prevented from being separated or flying out. 2. The rocker arm is tightened and fixed by a lead screw, can rotate, and is convenient to overhaul the winch drum and the main shaft. In conclusion, the winch prevents the shaft from being broken, and the running safety of the equipment is better ensured.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is an isometric view of the present invention;

FIG. 3 is a schematic structural view of a part of the arc-shaped bracket and the support post of the present invention;

FIG. 4 is a schematic structural view of the screw of the present invention;

FIG. 5 is a schematic structural view of the rocker arm and a part of the arc bracket of the present invention;

fig. 6 is a schematic view of the support of the present invention;

wherein, 1, a roller; 2. a support; 3. an annular brake disc; 4. an arc bracket; 5. an arc-shaped slot; 6. a support; 7. a rocker arm; 8. and a lead screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.

Referring to fig. 1 to 6, an anti-shaft-breaking device for a winch includes a drum 1, a motor drives a main shaft to drive the drum 1 to rotate, and the drum 1 is provided with a braking system to brake the drum 1. The cover is equipped with a plurality of annular brake discs 3 on the cylinder 1, annular brake disc 3 all is equipped with a plurality of arc brackets 4 that prevent cylinder 1 and pop out along circumference, arc wall 5 has been seted up on arc bracket 4, the border of annular brake disc 3 stretches into in the arc wall 5, and is equipped with the clearance with between the inner wall of arc wall 5, and arc wall 5 keeps 10 ~ 20mm clearance with 3 outward flanges of annular brake disc, and the winch does not interfere cylinder 1 when normally rotates, restriction cylinder 1 displacement when taking place the disconnected axle. The present embodiment further comprises a support mechanism for fixing the arc-shaped brackets 4.

Specifically, the number of the arc-shaped brackets 4 is 3.

Specifically, the supporting mechanism comprises a bracket 6 and a rocker arm assembly, and two arc-shaped brackets 4 positioned at the lower part of the annular brake disc 3 are connected to the bracket 6; the bracket 6 is fixed on the foundation by adopting foundation bolts and mainly prevents the broken shaft rear roller 1 from falling off due to dead weight. The rocker arm assembly comprises two supports 2, one of the supports 2 is hinged with a rocker arm 7, one end of a third arc-shaped bracket 4 is installed on the rocker arm 7, the other end of the third arc-shaped bracket 4 is connected with a lead screw 8, and the lead screw 8 is fixed on the other support 2. The bottom of the rocker arm 7 is fixed on one of the supports 2 by a pin shaft, the lead screw 8 is fixed on the other support 2 by a pin shaft, the gap between the arc-shaped groove 5 of the rocker arm 7 and the third arc-shaped bracket 4 and the annular brake disc 3 of the winch can be adjusted in implementation, and meanwhile, the rocker arm 7 and the lead screw 8 can be detached, so that the winch roller 1 and the main shaft can be conveniently overhauled.

Specifically, the number of the annular brake discs 3 is 3, wherein two annular brake discs 3 are respectively arranged at two ends of the roller 1, and the third annular brake disc 3 is arranged in the middle of the roller 1. Because the diameter of the rope baffle plate in the middle of the roller 1 (the rope baffle plate is arranged beside the annular brake disc 3, and the edge of the rope baffle plate also extends into the arc-shaped groove 5) is smaller than that of the annular brake disc 3 at the end part, the size of the rocker arm 7 positioned in the middle is slightly smaller, and the size of the rocker arms 7 positioned at the two end parts is slightly larger.

Specifically, both ends of the lead screw 8 comprise adapters, and the lead screw 8 is made of 45# steel.

Specifically, the arc-shaped bracket 4, the rocker arm 7, the bracket 6 and the support 2 are welded pieces of Q235 steel.

The force analysis of the winch shaft breakage prevention device is as follows:

after the winch is broken, the arc-shaped bracket 4 and the rocker arm 7 bear the gravity of the roller 1 device and the tension of the steel cable. Because the structural clearance between the shaft-breaking prevention device and the roller is smaller, the impact force is not considered. The parameters were calculated as follows:

the center of gravity of the roller 1 is approximately the centroid thereof, and the included angle between the lower rope-outlet steel cable and the horizontal plane

arctan(2000/21938)＝5.2°

The stress analysis of the main shaft shows that the bending moment of the section of the main shaft between the two rollers 1 is the largest, the stress is also the highest, the section is the section with the largest broken shaft probability, and the broken shaft is supposed to occur at the section. When the two steel cables are horizontally swung to the position closest to the innermost sides of the two rollers 1, the tension of the steel cables is almost completely borne by the rocker arm 7 of the shaft breakage preventing device in the middle, and the condition is the most dangerous condition of the rocker arm 7; when the steel cable is horizontally swung to the outermost position of the roller 1, the rocker arms 7 positioned at the two ends of the roller 1 are loaded most dangerously.

The whole force of the shaft-breaking prevention device is shown in the following figure, G is the gravity of the roller 1, and F₁、F₂Is a tension of the steel cable, N₁、N₂A supporting force of the arc-shaped bracket 4, N₃The roller 1 is balanced under these several forces for the pressure of the rocker arm (F)₁、F₂Is balanced by the braking system and is not considered here).

For the rocker arm 7 and its arc shaped bracket 4:

N₁＝0

F₁＝0

N₃cos74°+N₂cos45°＝F₂cos5.2°

N₂cos45°＝G-F₂sin5.2°+N₃sin74°

the rocker arm 7 is stressed as shown in the following figure, N₃The rocker arm 7 is subject to the extrusion force of the roller 1, F₄、F₅Is the bearing reaction force of the end of the rocker arm 7, N₃、F₄、F₅The three forces are concurrent. The rocker arm 7 located in the middle of the roller 1 is stressed seriously, and the calculation is carried out.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The winch shaft breakage prevention device comprises a roller (1), and is characterized in that a plurality of annular brake discs (3) are sleeved on the roller (1), a plurality of arc-shaped brackets (4) for preventing the roller (1) from popping up are arranged on each annular brake disc (3) along the circumferential direction, an arc-shaped groove (5) is formed in each arc-shaped bracket (4), the edge of each annular brake disc (3) extends into each arc-shaped groove (5), and a gap is formed between each annular brake disc and the inner wall of each arc-shaped groove (5); the device also comprises a supporting mechanism for fixing the arc-shaped bracket (4).

2. The winch shaft breakage prevention device as claimed in claim 1, characterized in that the number of the arc-shaped brackets (4) is 3.

3. The winch shaft breakage prevention device as claimed in claim 1, characterized in that the support means comprises a bracket (6) and a rocker arm assembly, and both of the arc brackets (4) located at the lower part of the annular brake disc (3) are connected to the bracket (6);

the rocker arm assembly comprises two supports (2), one of the supports (2) is hinged with a rocker arm (7), one end of a third arc-shaped bracket (4) is installed on the rocker arm (7), the other end of the third arc-shaped bracket (4) is connected with a lead screw (8), and the lead screw (8) is fixed on the other support (2).

4. The winch shaft breakage prevention device as claimed in claim 2, characterized in that the number of the annular brake discs (3) is 3, two of the annular brake discs (3) being arranged at the two ends of the drum (1) respectively, and the third annular brake disc (3) being arranged in the middle of the drum (1).

5. The winch shaft breakage prevention arrangement as claimed in claim 3, characterized in that the lead screw (8) is made of 45# steel.