CN202321894U - Detachable type traction machine - Google Patents

Abstract

A detachable traction machine relates to a traction machine. At present, there are two traction machines supporting the intermediate structure on the traction wheel. The removal and replacement of the traction wheel is a huge project, and the amount of disassembly is large, and the permanent magnet is just within the range of disassembly. The surface is easy to absorb garbage, and the permanent magnet is easy to be damaged. trouble. The utility model is characterized in that: the rotating shaft is provided with a traction wheel seat, the traction wheel is sleeved on the traction wheel seat, the rotating shafts on the left and right sides of the traction wheel seat are respectively provided with bearings, and the inner side of the bearing is provided with a bearing Cover, the minimum diameter of the inner ring of the traction wheel is larger than the outer ring diameter of the left bearing cover, the hole diameter of the end cover installation hole on the left side of the casing is larger than the maximum diameter of the traction wheel, and the shaft on the left side of the left bearing is provided with The brake wheel. When disassembling the traction sheave, the traction sheave can be removed from the left side of the housing after the brake sheave and the end cover on the left side of the casing are removed, the replacement steps are simple, the use of tools is simple, and the efficiency is high.

Description

Detachable traction machine

technical field

The utility model relates to a traction machine.

Background technique

At present, the permanent magnet synchronous gearless traction machines used in China all adopt the cantilever type (that is, the traction sheave is on one side of the two bearings), while some foreign countries have used the traction sheave to put two supporting intermediate structures. However, the replacement of traction sheave projects for this structure in foreign countries is relatively large. Because of this structure in foreign countries, the replacement of the traction sheave must be replaced from the encoder end of the traction machine, and the other end is sealed. The end where the encoder is installed has a rotor and a stator, so the replacement of the traction sheave must disassemble the rotor and the stator, which makes it more difficult to disassemble in the machine room. The most difficult point is that the permanent magnet is just within the range of disassembly, and the surface is easy to absorb garbage (this garbage is difficult to remove), and it is also easy to be damaged by collisions, which will bring hidden dangers to the normal operation of the traction machine. If it is shipped back to the factory for replacement, the cost will be high.

Utility model content

The technical problem to be solved and the technical task proposed by the utility model are to perfect and improve the existing technical solutions and provide a detachable traction machine to achieve the purpose of easy disassembly. For this reason, the utility model takes the following technical solutions.

The detachable traction machine includes a casing, a traction wheel, a rotating shaft used to drive the traction wheel to rotate, a bearing matching the rotating shaft, and an end cover matching the bearing. The end cover is connected to the casing, and its characteristics In that: the rotating shaft is provided with a traction sheave seat, the traction sheave is sleeved on the traction sheave seat, the rotating shafts on the left and right sides of the traction sheave seat are respectively provided with bearings, the inner side of the bearing is provided with a bearing cover, and the traction The minimum diameter of the inner ring of the wheel is larger than the outer ring diameter of the left bearing cap, and the hole diameter of the end cover mounting hole on the left side of the casing is larger than the maximum diameter of the traction sheave. The rotating shaft on the left side of the left bearing is provided with the moving wheel. When disassembling the traction sheave, the traction sheave can be removed from the left side of the housing after removing the brake sheave and the end cover on the left side of the housing. Operation poses hazards. The replacement steps are simple, the use of tools is simple, and the efficiency is high. And adopt the traction wheel to put two supporting middle structures, when the weight is suspended on the traction wheel, the force is obviously better than that of the cantilever structure. It is thicker than the rotating shaft of the utility model structure, and the bearing is also larger. Under the same traction conditions and mechanical conditions, this technical solution can hang heavier weights and withstand greater impact force, and if the rotating shaft breaks, it will also It will cause the traction sheave to be stuck in the casing without endangering personal safety.

As a further improvement and supplement to the above technical solution, the utility model also includes the following additional technical features.

The inner end of at least one end cover extends inwardly from the end surface of the traction sheave. When the rotating shaft breaks, the traction sheave can be stuck on the end cover fixed with the casing to prevent falling and endanger personal safety.

The traction sheave seat and the traction sheave are connected by screws, and the traction sheave seat and the rotating shaft are radially fixed by keys.

A shaft shoulder is set on the shaft on the right side of the traction sheave seat. The left side of the shaft shoulder is against the traction seat, and the right side is against the pull plate.

The inner hole matching the traction sheave and the traction sheave seat is a stepped hole, including a large diameter hole and a small diameter hole on the left side of the large diameter hole, and the outer peripheral surface of the traction sheave seat is a step matching the inner hole of the traction sheave On the surface, the screws pass through the traction sheave from left to right and are screwed to the traction sheave seat so that the step surface of the inner hole of the traction sheave and the step surface of the outer ring of the traction sheave seat are in contact.

The left end surface of the traction sheave is positioned at the left side of the right end surface of the left end cover so that the inner side end of the left end cover extends inside the traction sheave.

Beneficial effects: the replacement steps are simple, the use of tools is simple, and the efficiency is high. After removing the brake wheel and the end cover on the left side of the casing, the traction sheave can be removed from the left side of the casing without disassembling the stator and rotor, and will not give The normal operation of the traction machine brings hidden dangers. And adopt the traction wheel to put two supporting middle structures, when the weight is suspended on the traction wheel, the force is obviously better than that of the cantilever structure. It is thicker than the rotating shaft of the utility model structure, and the bearing is also larger. Under the same traction conditions and mechanical conditions, this technical solution can hang heavier weights and withstand greater impact force, and if the rotating shaft breaks, it will also It will cause the traction sheave to be stuck in the casing without endangering personal safety.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Among the figure: 1-casing; 2-bearing cover; 3-bearing; 4-rotating shaft; 5-end cover;

Detailed ways

The technical solution of the utility model is described in further detail below in conjunction with the accompanying drawings of the description.

The utility model includes a casing 1, a traction wheel 8, a brake wheel 9, a rotating shaft 4 used to drive the traction wheel 8 to rotate, a bearing 3 matching the rotating shaft 4, and an end cover 5 matching the bearing 3. The end cover 5 is connected with the casing 1, and the rotating shaft 4 is provided with a traction wheel seat 7, the traction wheel 8 is set on the traction wheel seat 7, and the rotating shafts 4 on the left and right sides of the traction wheel seat 7 are respectively provided with There is a bearing 3, the inner side of the bearing 3 is provided with a bearing cover 2, the minimum diameter of the inner ring of the traction sheave 8 is larger than the outer ring diameter of the left bearing cover 2, and the diameter of the mounting hole of the end cover 5 on the left side of the casing 1 is larger than The maximum diameter of the traction sheave 8 is provided with the brake wheel 9 on the rotating shaft 4 on the left side of the left bearing 3 .

In order to make when the rotating shaft 4 breaks, the traction sheave 8 can be stuck on the end cover 5 fixed with the casing 1 , the inner side end of at least one end cover 5 protrudes from the end surface of the traction sheave 8 .

The traction wheel seat 7 is connected with the traction wheel 8 by screws, and the traction wheel seat 7 and the rotating shaft 4 are radially fixed by a key. A shaft shoulder is arranged on the rotating shaft 4 on the right side of the traction wheel seat 7. The left side of the shaft shoulder is against the traction seat, and the right side is against the pull plate 6. The screw passes through the pull plate 6 and is screwed with the traction wheel seat 7 to make the traction Pulley 8 is positioned axially. The inner hole of the traction sheave 8 matched with the traction sheave seat 7 is a stepped hole, including a large diameter hole and a small diameter hole located on the left side of the large diameter hole. The step surface matching the hole, the screw passes through the traction sheave 8 from left to right and is screwed with the traction sheave seat 7 so that the step surface of the traction sheave 8 inner hole and the step surface of the traction sheave seat 7 outer rings are offset. The aperture that is located at the end cover 5 mounting holes on the left side of casing 1 is greater than the maximum diameter of traction sheave 8, and the left end face of traction sheave 8 is positioned at the left side of the right end face of left end cover 5 so that the left side end cover 5 The inner end extends inwardly from the traction sheave 8 .

Assembly method:

First traction sheave 8 is pressed on the rotating shaft 4, and both are interference fit. Pull plate 6 is sleeved on the rotating shaft 4 then, and be fixed on the traction sheave seat 7 with screw. Prevent the radial rotation of the traction sheave 8 with the key, and prevent the axial movement of the traction sheave 8 with the pull plate 6 and the shaft shoulder. Put the two bearing caps 2 on the shaft again, and shrink the two bearings 3 onto the two ends of the rotating shaft 4 respectively. Then put the above-installed parts into the casing 1 with special tooling, and finally put end caps 5 at both ends, and fix them with screws.

Disassembly method of traction sheave 8:

Remove the brake wheel 9 from the rotating shaft 4, remove the left end cover 5, and then remove the connecting screws between the traction wheel 8 and the seat 7 of the traction wheel 8, and then the traction wheel 8 can be disassembled from the left side of the casing 1 down.

The detachable traction machine shown in Figure 1 above is a specific embodiment of the utility model, which has already reflected the substantive features and progress of the utility model, and can be used according to actual needs under the inspiration of the utility model. Equivalent modifications in aspects such as shape and structure are all within the scope of protection of this proposal.

Claims (6)

1. detachable towing machine; The bearing (3) that comprises casing (1), traction sheave (8), brake wheel (9), is used to drive rotating shaft (4) that traction sheave (8) rotates, matches with rotating shaft (4), the end cap (5) that matches with bearing (3); Described end cap (5) is connected with casing (1); It is characterized in that: described rotating shaft (4) is provided with a traction wheel seat (7); Traction sheave (8) is enclosed within on the traction wheel seat (7); Be respectively equipped with bearing (3) in the rotating shaft (4) of traction wheel seat (7) left and right sides, the inboard of bearing (3) is provided with bearing cap shim (2), and the inner ring minimum diameter of traction sheave (8) is greater than the race diameter of left side bearing cap shim (2); The aperture of end cap (5) mounting hole of being located at casing (1) left side is greater than the maximum gauge of traction sheave (8), and the rotating shaft (4) in left bearing (3) left side is provided with described brake wheel (9).

2. detachable towing machine according to claim 1 is characterized in that: the end face of stretching in traction sheave (8) in the medial extremity of at least one end cap (5).

3. detachable towing machine according to claim 2 is characterized in that: is connected through screw between traction wheel seat (7) and the traction sheave (8), and radially fixing between traction wheel seat (7) and the rotating shaft (4) through key.

4. detachable towing machine according to claim 3; It is characterized in that: be positioned in traction wheel seat (7) the right side rotating shaft (4) and establish the shaft shoulder; The left side of the shaft shoulder and traction seat offset; Right side and arm-tie (6) offset, and screw passes arm-tie (6) and traction wheel seat (7) and is spirally connected and makes traction sheave (8) axial location.

5. detachable towing machine according to claim 4; It is characterized in that: traction sheave (8) is a stepped hole with the endoporus that traction wheel seat (7) matches; Comprise large diameter hole and the small diameter bore that is positioned at the large diameter hole left side; The cascaded surface of the outer circumference surface of traction wheel seat (7) for matching with traction sheave (8) endoporus, screw pass the be spirally connected step surface that makes traction sheave (8) endoporus and the step surface of traction wheel seat (7) outer ring of traction sheave (8) and traction wheel seat (7) from left to right and offset.

6. detachable towing machine according to claim 5 is characterized in that: the left side that the left side of traction sheave (8) is positioned at the right side of left side end cap (5) makes the medial extremity of left side end cap (5) stretch in traction sheave (8).

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