CN115958398A

CN115958398A - Rapid assembly device for hole shaft workpiece

Info

Publication number: CN115958398A
Application number: CN202211403825.9A
Authority: CN
Inventors: 李庆山
Original assignee: Dalian Yihao Fan Manufacturing Co ltd
Current assignee: Dalian Yihao Fan Manufacturing Co ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-04-14

Abstract

The invention discloses a quick assembly device for a hole shaft workpiece, which comprises a screw rod, wherein a screw nut pressure sleeve is connected to the screw rod through external threads, and the lower part of the screw nut pressure sleeve is an accommodating chamber; the exterior of the receiving chamber is externally threaded with an external nut. The pressure bearing and the pressure sleeve which are sequentially sleeved on the external thread of the screw rod are accommodated in the accommodating cavity. The whole pressure bearing and the front end of the pressure sleeve are axially limited in the accommodating cavity through a sealing cover at the rear part of the outer nut; the rear end of the pressure sleeve extends out of the sealing cover and then abuts against the pressure pad; the pressure pad is also sleeved on the external thread of the screw rod. The lower end of the screw rod is fixed on the end head of the shaft workpiece through external threads, and the pressure pad is pressed on the end face of the hole workpiece. The rotary nut pressure sleeve is axially sleeved on the shaft workpiece through the pressure bearing and the pressure sleeve pushing hole, so that the operation is simple, and the working efficiency is improved. The impeller mounting structure is suitable for mounting and using the impeller in any fan maintenance site, and has economic value.

Description

Rapid assembly device for hole shaft workpiece

Technical Field

The invention relates to the technical field of fan impeller assembly process improved equipment and facilities, in particular to a rapid assembly device for a hole shaft workpiece.

Background

In the prior art, the assembly of the fan impeller is that a main shaft of an impeller transmission part, a bearing and a bearing box are assembled into a whole, and then the impeller is installed. Two methods, hydraulic assembly or hammer assembly, are generally used. The hydraulic assembly is generally that a manufacturer installs an impeller on a transmission shaft end, and the assembly method has limitations, is only suitable for assembly of fixed equipment of a production unit, is fixed in position and inflexible, and is not suitable for fan maintenance and use on site of a user. The hammering assembly is suitable for the temporary assembly that is squeezed into with the hammering on a small scale, easily hinders bearing and shaft hole, easily makes the hole spare size take place the shift of the interior outer cover of bearing in deformation and the transmission group or injure, easily produces main shaft and hole work piece fit tolerance undersize, and the dress can not go into to and the too big, the reduction life scheduling problem of bearing running noise.

Disclosure of Invention

The invention aims to solve the problems that the existing assembly method is inflexible to operate, fixed in position, easy to damage a bearing and a shaft hole and change the size of a hole piece.

In order to achieve the purpose, the invention provides a rapid assembly device for a hole shaft workpiece, which comprises a screw rod, wherein a screw nut pressure sleeve is connected onto the screw rod through external threads, and the lower part of the screw nut pressure sleeve is an accommodating chamber; the exterior of the receiving chamber is externally threaded with an external nut. The accommodating cavity is internally provided with a pressure bearing and a pressure sleeve which are sequentially sleeved on the external thread of the screw rod; the whole pressure bearing and the front end of the pressure sleeve are axially limited in the accommodating cavity through a sealing cover at the rear part of the outer nut; the rear end of the pressure sleeve extends out of the sealing cover and then abuts against the pressure pad; the pressure pad is also sleeved on the external thread of the screw rod. The lower end of the screw rod is fixed on the end head of the shaft workpiece through external threads, and the pressure pad is pressed on the end face of the hole workpiece.

Preferably, the outer diameter of the pressure pad is greater than the inner diameter of the hole work piece.

Preferably, the side wall of the nut pressure sleeve is provided with a plurality of inserting ports, and a carrying handle is inserted into any one of the inserting ports.

Preferably, the middle upper portion of the handle is bent in a direction opposite to the screwing motion of the nut pressure sleeve.

Preferably, the middle-lower section of the screw rod is arranged in a stepped shaft shape, the diameter of the middle-lower section is smaller than that of the upper section, and a shoulder is arranged at the transition position from the upper section to the middle-lower section.

The invention only needs to rotate the carrying handle on the screw nut pressure sleeve, axially pushes the hole workpiece through the pressure bearing and the pressure sleeve, and sleeves the hole workpiece on the shaft workpiece, has simple operation, flexibility and labor saving, saves about one third of labor cost, saves assembly time and improves working efficiency. The invention eliminates the assembly limitation and the region limitation of the existing hole shaft workpiece, is suitable for the installation and the use of the impeller in any fan maintenance site, and has certain practical economic value.

Drawings

Fig. 1 is a schematic half-sectional view of a quick assembling device for a hole shaft workpiece according to the present invention.

And others: 1. a screw rod; 2. a carrying handle; 3. a nut pressure sleeve; 4. a pressure bearing; 5. a pressure jacket; 6. an outer nut; 7. a pressure pad; 8. a hole workpiece; 9. a shaft workpiece; 10. and (4) an interface.

Detailed Description

Example (b):

as shown in fig. 1, a device for rapidly assembling a hole shaft workpiece comprises a screw rod 1, wherein a cylindrical nut pressure sleeve 3 with an internal thread hole in the middle is connected to the screw rod 1 through external threads, and the lower part of the nut pressure sleeve 3 is a hollow accommodating chamber; the exterior of the receiving chamber is externally threaded with an external nut 6. The side wall of the nut pressure sleeve 3 is provided with a plurality of insertion ports 10, and a carrying handle 2 is inserted into any one of the insertion ports 10. The middle upper part of the carrying handle 2 is bent towards the direction opposite to the screwing motion of the nut pressure sleeve 3.

The pressure bearing 4 and the pressure sleeve 5 which are sequentially sleeved on the external thread of the screw rod 1 are accommodated in the accommodating cavity, the whole pressure bearing 4 and the front end of the pressure sleeve 5 are axially limited in the accommodating cavity through a sealing cover at the rear part of the outer nut 6. The rear end of the pressure sleeve 5 extends out of the sealing cover and then abuts against the pressure pad 7; the pressure pad 7 is also sleeved on the external thread of the screw rod 1.

The middle-lower section of the screw rod 1 is arranged in a stepped shaft shape, the diameter of the middle-lower section is smaller than that of the upper section, and a shoulder is arranged at the transition position from the upper section to the middle-lower section. The lower end of the screw rod 1 is fixed on the end head of the shaft workpiece 9 through external threads, and internal threads matched with the threads at the lower end of the screw rod 1 are prefabricated at the end head of the shaft workpiece 9. The pressure pad 7 presses against the end face of the hole workpiece 8. The outer diameter of the pressure pad 7 is larger than the inner diameter of the hole work piece 8.

The design principle of the process device of the invention is as follows:

the pressure pad 7 is pressed on the end face 8 of the hole workpiece, the outer diameter of the pressure pad 7 is larger than the inner bore diameter of the hole workpiece 8, the pressure sleeve 5 is pressed on the pressure pad 7, the pressure bearing 4 is pressed on the pressure sleeve 5, the pressure bearing 4 is arranged in the nut pressure sleeve 3, the pressure bearing 4 and the pressure sleeve 5 are fixed on the nut pressure sleeve 3 through the outer nut 6, and finally the 3-nut pressure sleeve is rotated to achieve the assembling purpose.

The use principle of the invention is as follows:

as shown in fig. 1, the lower end of the screw rod 1 is screwed to the shaft workpiece 9 through the external thread, and the carrying handle 2 on the nut pressure sleeve 3 is rotated (clockwise) by hand or by a sleeve, at this time, the nut pressure sleeve 3 pushes the pressure bearing 4 and the pressure sleeve 5 to axially press the hole workpiece 8 into the shaft workpiece 9 until the press-in depth reaches the assembly dimension.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.

Claims

1. The device for quickly assembling the hole shaft workpiece is characterized by comprising a screw rod (1), wherein a nut pressure sleeve (3) is connected to the screw rod (1) through external threads, and the lower part of the nut pressure sleeve (3) is an accommodating chamber; the outer part of the accommodating chamber is connected with an outer nut (6) through external threads;

a pressure bearing (4) and a pressure sleeve (5) which are sequentially sleeved on the external thread of the screw rod (1) are accommodated in the accommodating cavity; the whole pressure bearing (4) and the front end of the pressure sleeve (5) are axially limited in the accommodating cavity through a sealing cover at the rear part of the outer nut (6); the rear end of the pressure sleeve (5) extends out of the sealing cover and then abuts against the pressure pad (7); the pressure pad (7) is also sleeved on the external thread of the screw rod (1);

the lower end of the screw rod (1) is fixed on the end head of the shaft workpiece (9) through external threads, and the pressure pad (7) is pressed on the end face of the hole workpiece (8).

2. A quick-fit arrangement for hole-shaft workpieces according to claim 1, characterised in that the outer diameter of the pressure pad (7) is greater than the inner diameter of the hole workpiece (8).

3. The rapid assembling device for the hole-shaft workpiece according to claim 1, wherein a plurality of inserting ports (10) are formed in the side wall of the nut pressure sleeve (3), and a carrying handle (2) is inserted into any one of the inserting ports (10).

4. The device for the rapid assembly of a hole shaft workpiece as claimed in claim 3, characterized in that the middle upper part of the carrying handle (2) is bent in the opposite direction of the screwing motion of the nut pressure sleeve (3).

5. The quick assembly device for the hole shaft workpiece as claimed in claim 1, wherein the middle-lower section of the screw rod (1) is arranged in a stepped shaft shape, the diameter of the middle-lower section is smaller than that of the upper section, and a shoulder is arranged at the transition position from the upper section to the middle-lower section.