CN217413879U - Frock is dismantled to air compressor machine shaft coupling elastic ring - Google Patents

Abstract

The utility model relates to an air compressor machine technical field discloses a frock is dismantled to air compressor machine shaft coupling elastic ring, dismantles the problem of inefficiency, inconvenient operation and existence potential safety hazard to the shaft coupling elastic ring among the prior art, now proposes following scheme, and it includes bolt, long nut, nut and pin, the inside longer thin tooth left-hand thread of processing of long nut one end, outside hexagon structure, the thin tooth left-hand thread of bolt and the thin tooth left-hand thread of long nut adapt to mutually, the nut be the positive internal thread, just the circumscribed circle diameter of nut and circular locating hole cooperate the adaptation. The utility model avoids damaging the components of the air compressor in the process of disassembly and assembly; meanwhile, the coaxiality of the coupler, the air compressor and the air compressor motor after the elastic ring is replaced in subsequent installation is guaranteed, the air compressor can run stably and reliably for a long time, and the fault frequency is reduced.

Description

Frock is dismantled to air compressor machine shaft coupling elastic ring

Technical Field

The utility model relates to an air compressor machine technical field especially relates to an air compressor machine shaft coupling elastic ring dismantles frock.

Background

In recent years, air compressors have gained widespread use in all aspects of society as power plants for compressed air. The NPT5 air compressor has been widely used in the brake system of internal combustion locomotive because of its advantages of low cost, firmness and durability, and easy maintenance.

The NPT5 air compressor is a plunger type air compressor and is connected with a motor through an elastic ring pin coupler. The power transmission is that the motor drives the air compressor through the elastic ring in the middle of the coupler, the elastic ring is made of rubber and belongs to a quick-wear part, the unit is required to be replaced when running for about 4000 hours in an accumulative way under normal conditions, if the elastic ring is not replaced on time, the worn elastic body has a fracture risk and can influence the safety of the coupler body, the coupler body cannot normally run once the air compressor unit is damaged, and the use cost of a user is increased and the normal production can be influenced when the whole coupler is replaced. When the elastic ring is replaced, the pin for fixing the elastic ring needs to be detached and replaced, and the pin is installed on the air compressor crankshaft half-coupling in an interference fit mode and is difficult to detach.

At present, the pin is generally ejected out by matching a bolt and a nut, and an elastic body is replaced, but the method has the defects that: firstly, because no workpiece is positioned, the force is too strong, the bolt is easy to slip off, and potential safety hazards of hand touch exist; secondly, when the bolt is ejected out, the screw thread bearing stronger spiral moment rarely has the screw thread pitch of 2-3, so that the bolt and the nut are frequently buckled in a sliding way; secondly, the bolts are continuously intercepted and the nuts are continuously replaced, so that the working efficiency is low, and generally 3 mechanics are required to work for 10 hours when 8 elastic rings are replaced by 1 air compressor; secondly, the improper component damage that causes of dismouting causes the air compressor machine operation conditions unfavorable, to sum up, current shaft coupling elastic ring dismantles inefficiency, inconvenient operation and has the potential safety hazard, for this reason, this scheme has designed an air compressor machine shaft coupling elastic ring dismantles frock.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pair of frock is dismantled to air compressor machine shaft coupling elastic ring has solved the problem that the shaft coupling elastic ring among the prior art dismantles inefficiency, inconvenient and have the potential safety hazard of operation.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a frock is dismantled to air compressor machine shaft coupling elastic ring, includes bolt, long nut, nut and pin, the inside longer thin tooth of processing of long nut one end reverse thread, outside hexagon structure, the thin tooth reverse thread of bolt and the thin tooth reverse thread of long nut adapt to of mutually supporting, the nut be the orthodontic internal thread, just the circumscribed circle diameter and the circular locating hole adaptation of cooperateing of nut.

Preferably, the other end of the long nut is internally provided with a shorter cylindrical solid body.

Preferably, one end of the pin is an orthodontic external thread, the middle of the pin is a cylinder with taper, and the other end of the pin is a right cylinder and a circular stop block.

Preferably, the right cylinder of the pin is sleeved with a rubber elastic ring.

The utility model discloses in:

1. the utility model discloses a circular locating hole design has overcome the work piece slippage phenomenon that air compressor machine shaft coupling elastic ring appears in the operation of advancing in the top, has solved the potential safety hazard in the operation.

2. Adopt the utility model discloses dismantle NPT5 air compressor machine shaft coupling elastic ring operating method is simple high-efficient, and the change time is shortened to 1 man-hour on average from original 3 man-hours per man 10 man-hours, has greatly improved the operating efficiency.

3. The utility model discloses practiced thrift manpower, spare part cost in the operation, reduced locomotive on-the-spot processing time, reduced the railway of steel industry diesel locomotive and used the car delay fee.

4. The utility model has the advantages that the design measures of the bolt and the long nut such as the fine thread reverse thread, the nut positive thread protective thread, the nut end surface knurling processing and the like can avoid damaging components of the air compressor in the dismounting process; meanwhile, the coaxiality of the coupler, the air compressor and the air compressor motor after the elastic ring is replaced in subsequent installation is guaranteed, the air compressor can stably and reliably operate for a long time, and the failure frequency is reduced.

Drawings

Fig. 1 is the schematic view of the split structure of the present invention.

Fig. 2 is a schematic structural diagram of an NPT5 type air compressor set.

Fig. 3 is a schematic view of the structure of the utility model in use.

Reference numbers in the figures: 1. an air compressor bearing end cover; 2. a coupling; 3. an air compressor motor; 4. an air compressor half coupling; 5. a motor half-coupling; 6. an elastic ring; 7. a long nut; 8. a bolt; 9. positioning holes; 10. a pin; 11. and a nut.

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.

Referring to fig. 1-3, an NPT5 type air compressor unit comprises an NPT5 type air compressor, a coupler 2 and an air compressor motor 3, wherein the coupler 2 consists of an air compressor half-coupler 4 and a motor half-coupler 5, and the two parts are elastically connected through rubber elastic rings 6 on 8 pins 10;

a disassembly tool for an elastic ring of an air compressor coupler comprises a bolt 8, a long nut 7, a nut 11 and a pin 10, wherein the bolt 8 is a hexagon head bolt, and a circular positioning drill hole 3 with the diameter of 22mm is machined in the top of the hexagon head; the bolt 8 is an M20 fine reverse thread with the pitch of 1.5mm, a longer fine reverse thread and an external hexagonal structure are processed inside one end of the long nut 7, the pitch of the thread is 1.5mm, and the external hexagonal structure is 32mm, so that an open end wrench can be conveniently clamped;

the inner part of one end of the left side of the long nut 7 is a short cylindrical solid, and the end face is subjected to knurling treatment, so that the long nut is prevented from rotating in the process of using a wrench to apply force to eject, and the bearing end cover 1 of the air compressor is prevented from being damaged;

the fine-tooth reverse threads of the bolt 8 and the fine-tooth reverse threads of the long nut 7 are matched and adapted with each other, the nut 11 is an M12 positive internal thread, and the diameter of the circumscribed circle of the nut 11 is matched and adapted with the circular positioning drill hole 9;

pin 10 left side one end is M12 orthodontic external screw thread, the centre is the cylinder of tapering, right side one end is right cylinder and circular dog, the cover has rubber elasticity circle 6 on the right cylinder, pass through tapered cylinder and install on air compressor machine half-coupling 4 through interference fit, the orthodontic external screw thread of pin 10 left end and nut 11 cooperate the adaptation, wear to be equipped with plain washer and elastic washer simultaneously, circular dog prevents that rubber elasticity circle 6 from coming out when the air compressor machine moves, 10 total 8 of pins, the centre-to-centre spacing equals evenly distributed on air compressor machine half-coupling 4.

The working principle is as follows: the coupling 2 is turned over to turn the coupling pins 10 to the side positions for easy disassembly. Loosening a nut 11 on a pin 10 by using a wrench, withdrawing the nut 11 to the top end of the left side of the orthodontic external thread on the pin 10 all the time, enabling the end surface of the nut 11 to be flush with the left end surface of the orthodontic external thread on the pin 10, screwing a bolt 8 into the bottom of a long nut 7, then sleeving a round positioning hole 9 of the bolt 8 into the nut 11, pinching the hexagonal head of the bolt 8 by a right hand to ensure that the bolt 8 is relatively immobile, simultaneously screwing the hexagon of the long nut 7 by a left hand to enable the long nut 7 to rotate leftwards until the left knurled end surface of the long nut 7 abuts against an air compressor bearing box end cover 1, loosening two hands, propping the air compressor coupler elastic ring disassembling tool left and right to prevent slipping off, clamping the hexagonal head of the long nut 8 by using one wrench, clamping the hexagonal head of the bolt 7 by the other wrench to rotate clockwise (seen from the side of an air compressor motor 3), and pushing the bolt 8 to move rightwards under the pushing of a fine-thread reverse to push the nut 11, the pin 10 is ejected out of the matching pin hole with excessive taper on the air compressor half-coupling 4 under the thrust action of the nut 11, then the utility model is reset, the bolt 8 and the long nut 7 are removed, the nut 11 and the flat cushion elastic gasket are removed, the pin 10 is easily drawn out from the air compressor half-coupling 4, the rubber elastic ring 6 is easily detached from the pin 10, and all the rubber elastic rings 6 are sequentially detached by the turning coupling 2;

when the rubber elastic ring is installed, a new rubber elastic ring 6 is sleeved into a pin 10, a plain washer and an elastic washer are sequentially added, and a nut 11 is screwed;

bolt 8 and long nut 7 adopt the back thread fit, and nut 11 adopts positive screw thread with the left side screw thread fit of pin 10, and the purpose of design like this is: in the use state of the utility model, the rotation direction of the long nut 7 is opposite to that of the nut 11, so as to avoid the long nut 7 from damaging the left thread of the pin 10;

the purpose of using long nuts and fine threads for the bolts 8 and the long nuts 7 is as follows: avoid this utility model to form great moment of torsion in rotatory ejecting operation, damage bolt 8 and long nut 7's screw thread.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (4)

1. The utility model provides a frock is dismantled to air compressor machine shaft coupling elastic ring, includes bolt (8), long nut (7), nut (11) and pin (10), its characterized in that, long nut (7) one end inside processing longer thin tooth reverse thread, outside hexagon structure, the thin tooth reverse thread of bolt (8) and the thin tooth reverse thread of long nut (7) adapt to mutually supporting, nut (11) be the orthodontics internal thread, just the circumscribed circle diameter of nut (11) and circular locating hole (9) adapt to mutually.

2. The air compressor coupling elastic ring dismounting tool according to claim 1, wherein a shorter cylindrical solid body is arranged inside the other end of the long nut (7).

3. The air compressor coupler elastic ring dismounting tool according to claim 1, wherein one end of the pin (10) is provided with an orthodontic external thread, the middle of the pin is provided with a tapered cylinder, and the other end of the pin is provided with a right cylinder and a circular stop block.

4. The air compressor coupling elastic ring dismounting tool according to claim 3, wherein a rubber elastic ring (6) is sleeved on a right cylinder of the pin (10).

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