CN116394178A

CN116394178A - Cold-pressing assembly device and method for rotor of compressor

Info

Publication number: CN116394178A
Application number: CN202310429287.9A
Authority: CN
Inventors: 丁鹏亮; 范兵; 韦燕; 王俊杰; 甄浩然; 任成泽
Original assignee: Qingdao Wanbao Compressor Co ltd
Current assignee: Qingdao Wanbao Compressor Co ltd
Priority date: 2023-04-20
Filing date: 2023-04-20
Publication date: 2023-07-07

Abstract

The invention provides a rotor cold-pressing assembly device and method for a compressor, relates to the field of development and debugging of compressors, and aims at solving the problem that the assembly deviation is caused by the fact that the gesture is difficult to control when a crankshaft of a current movement is pressed into a rotor.

Description

Cold-pressing assembly device and method for rotor of compressor

Technical Field

The invention relates to the field of development and debugging of compressors, in particular to a rotor cold-pressing assembly device and method for a compressor.

Background

In the development process of the compressor structure, the performance index is an important standard for determining whether the compressor is qualified or not, and the motor component is an important link for influencing the performance index, so that whether the rotor component is matched with the movement or not is an important factor in the development process; in the existing compressor assembly process, the rotor component pressing-in process is required to be assembled by a mass production automatic line body, the automatic line body is only applicable to the same model, and the mass production assembly is very inconvenient for the small amount of production assembly and rotor component replacement in the compressor development process.

If an automatic line body is used for assembly, the production yield of the automatic line body is affected, a large amount of time is consumed for adjusting the tool aiming at compressors of different types, the production efficiency of a production line is affected, and the requirements of a development process and the production efficiency of the production line are difficult to meet simultaneously. Chinese patent (publication No. CN 217571660U) discloses a device for repairing axial clearance between a rotor and a pump body of a compressor, wherein the clearance between the rotor and a crankshaft is adjusted by applying pressure axially; however, in the press-fitting process, the movement is easy to incline when being pressed into the rotor, and is influenced by different press-fitting resistances at different positions between the crankshaft and the counter bore of the rotor, so that assembly deviation between the crankshaft and the rotor is caused, assembly errors are caused, and the operation effect is influenced; in addition, only the trial production of the assembly of the rotor parts of the compressor with the same model can be realized once, and the adjustment is needed for the trial production of different models, so that the requirement of respectively debugging cores with different specifications in the development process is difficult to meet.

Disclosure of Invention

The invention aims at overcoming the defects of the prior art, and provides a rotor cold-pressing assembly device and method for a compressor.

The first object of the invention is to provide a cold press assembly device for a rotor of a compressor, which adopts the following scheme:

comprising the following steps:

the mandrel is a stepped shaft formed by butt joint of a positioning shaft section and a sleeving shaft section, one end of the sleeving shaft section is arranged in a shaft hole of the cylinder body in a sliding manner, and the end part of the positioning shaft section faces to the pressing assembly so as to coaxially match with a positioning hole of a crankshaft of the movement;

the pressing assembly is erected above the axis of the cylinder body and is provided with a pressing piece which is coaxially arranged with the positioning shaft section, and a press-fitting area for accommodating the movement is formed between the pressing piece and the end face of the cylinder body;

the telescopic piece is connected to the other end face of the cylinder body, which is far away from the pressing component, and is used for adjusting the distance between the cylinder body and the pressing piece.

Further, the diameter of the positioning shaft section is smaller than that of the sleeving shaft section, one end of the sleeving shaft section positioned in the shaft hole is abutted with an elastic piece, and the elastic piece acts on the end part of the mandrel along the axial direction.

Further, one end of the sleeve shaft section far away from the positioning shaft section is provided with a sliding shaft section which is in sliding fit with the shaft hole and is abutted with the elastic piece.

Further, the mandrel is provided with a plurality of mandrels, the mandrel is detachably connected with the cylinder body, and one end of the shaft hole, which faces the pressing component, is provided with an anti-drop ring; the diameters of the sleeved shaft sections of different mandrels are arranged in a different mode, and the diameters of the sliding shaft sections are equal and can be attached to the inner wall of the shaft hole.

Furthermore, one end of the positioning shaft section, which faces the pressing component, is a conical tip, and a conical transition section is arranged at the joint of the positioning shaft section and the sleeved shaft section.

Further, the cylinder body is connected with an annular guard plate towards one end of the pressing component, the annular guard plate is arranged around the mandrel, and the mandrel and the annular guard plate are combined with the end face of the cylinder body to form a bearing area for restraining the position of the rotor.

Further, support the pressure subassembly and still include support piece and pressure monitoring element, pressure monitoring element is located support piece, and frame is connected to support piece one end, other end connection support piece.

Further, the pressing piece and the supporting piece are coaxially connected in a rotating mode, the pressing piece comprises a circular pressing plate and an arc-shaped guard plate which are coaxially arranged, and the arc-shaped guard plate is connected to the edge of the circular pressing plate to form a semi-surrounding structure which is matched with the end portion of the machine core crankshaft.

A second object of the present invention is to provide a working method using the rotor cold press-fitting device for a compressor as described in the first object, comprising:

the rotor counter bore passes through the positioning shaft section and is sleeved outside the sleeved shaft section, and one end of the rotor is abutted against the end face of the cylinder body;

the movement is positioned in the press-fit area, the positioning shaft section is coaxially matched with the positioning hole, and the telescopic piece drives the cylinder body, the rotor and the movement to move until one end of the movement crankshaft, which is far away from the positioning hole, contacts the abutting piece;

the telescopic piece pushes the rotor to move, the sleeved shaft section of the mandrel gradually retracts into the shaft hole until the rotor is separated from the sleeved shaft section and sleeved on the crankshaft, the telescopic piece resets, and the movement after the rotor is pressed down is taken down.

Further, the diameters of the sleeve shaft section and the section of the crankshaft mounting rotor are equal, and the section of the crankshaft mounting rotor is kept coaxial with the mandrel in the mounting process.

Compared with the prior art, the invention has the advantages and positive effects that:

(1) The crankshaft of the existing movement is pressed into the rotor, the problem of assembly deviation caused by difficulty in control of the gesture is solved, the mandrel is matched with the cylinder body, the mandrel penetrates through the rotor and can be matched with the crankshaft of the movement, the rotor is pushed to move through the cylinder body and is retracted into the shaft hole of the cylinder body, the rotor is stably transferred to the crankshaft of the movement from the mandrel, the problem of assembly deviation between the crankshaft and the rotor is solved, and the assembly precision is improved.

(2) The mandrel is a stepped shaft and is axially divided into different functional sections, the positioning shaft section is matched with a positioning hole of a core crankshaft to realize positioning constraint in the press-fitting direction, the sleeve shaft section preloads the rotor, and the rotor is guided when the rotor is pushed to be pressed, so that the rotor is prevented from generating deviation; the sliding shaft section at the tail end of the positioning shaft section is combined, the gesture of the mandrel can be kept coaxial with the shaft hole, the mandrel can be matched with the shaft hole in a sliding mode to realize telescopic action, and the action requirement in the press mounting process is met.

(3) The shaft hole opening position is provided with the limiting ring, the limiting ring can restrict the mandrel from falling off, and simultaneously, after the limiting ring is removed, the mandrels with different specifications can be replaced to adapt to rotors and crankshafts with different specifications, sliding shaft sections corresponding to the different mandrels are configured to be the same, the sliding shaft sections are kept in a required coaxial state after being matched with the shaft hole, required precision can be achieved before and after the replacement of the different specifications, and therefore adjustment speed is improved, and debugging efficiency is improved.

(4) The end part of the positioning shaft section of the mandrel is provided with a conical tip, the positioning shaft section of the mandrel is matched with the positioning hole in an auxiliary manner, and the conical transition section is configured, so that the collision between the mandrel and the stepped hole on the rotor and the mandrel can be reduced, and the problem of assembly errors caused by rotor damage can be solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.

Fig. 1 is a schematic view of a cold press assembly device for a rotor for a compressor according to

embodiments

1 and 2 of the present invention.

Fig. 2 is a schematic side view of a cold press-fitting apparatus for a rotor for a compressor according to

embodiments

1 and 2 of the present invention.

Fig. 3 is a schematic diagram of the structure of the mandrel and cylinder in

embodiments

1 and 2 of the present invention.

Fig. 4 is a schematic diagram showing the structure of the cooperation of the mandrel and the cylinder in

embodiments

1 and 2 of the present invention.

Fig. 5 is a schematic front view of the pressing assembly in

embodiments

1 and 2 of the present invention.

Fig. 6 is a schematic side view of the pressing assembly in

embodiments

1 and 2 of the present invention.

Fig. 7 is an end view schematically showing a pressing member of the pressing assembly in

embodiments

1 and 2 of the present invention.

Fig. 8 is a schematic diagram showing the relative positions of the rotor and the crankshaft in

embodiments

1 and 2 of the present invention.

The hydraulic cylinder comprises a cylinder body 1, a rotor 2, a movement 3, a pressing component 4, a pressure monitoring element 5, a pressing component 6, a telescopic component 7, a frame 8, a mandrel 9, an annular guard plate 10, an elastic component 11, a bottom plate 12, a positioning shaft section 13, a sleeved shaft section 14, a sliding shaft section 15, a circular pressing plate 16, an arc guard plate 17 and a crankshaft 18.

Detailed Description

Example 1

In an exemplary embodiment of the present invention, as shown in fig. 1 to 8, a rotor cold press assembly device for a compressor is provided.

At present, the rotor 2 press-mounting equipment used in a laboratory scene is inconvenient to control the press-mounting gesture, is affected by different press-mounting resistances at different positions between the crankshaft 18 and the counter bore of the rotor 2, and can cause assembly deviation between the crankshaft 18 and the rotor 2, so that assembly errors are caused, and the operation effect is affected.

Based on this, the embodiment provides a rotor cold pressing assembly device for a compressor, which is particularly suitable for the process of press fitting the rotor 2 in a laboratory scene, can utilize the telescopic mandrel 9 to position and guide the rotor 2, control the gesture of the rotor 2 in the press fitting process, reduce the assembly deviation between the rotor 2 and the crankshaft 18, and the mandrel 9 is detachably connected with the matched cylinder body 1, so that the rotor 2 and the crankshaft 18 with different specifications can be replaced by adapting the mandrel 9, and the application scene is enlarged, thereby improving the press fitting efficiency.

The cold press-fitting device for a rotor for a compressor will be described in detail with reference to the accompanying drawings.

Referring to fig. 1, the rotor cold press assembly device for the compressor mainly comprises a mandrel 9, a cylinder body 1, a pressing component 4, a telescopic piece 7 and a frame 8, wherein the frame 8 comprises a bottom frame and a top plate, the telescopic piece 7 is installed on the bottom frame, the cylinder body 1 is installed at the output end of the telescopic piece 7, the mandrel 9 is slidably installed in a shaft hole of the cylinder body 1, the pressing component 4 is installed on the bottom frame, so that the pressing component 4 is erected above the cylinder body 1 and the mandrel 9, the pressing component 4 is provided with a pressing piece 6 coaxial with the mandrel 9, and a press-fitting area for accommodating the movement 3 is formed between the pressing piece 6 and the end face of the cylinder body 1.

The movement 3 of the compressor is provided with a crankshaft 18, as shown in fig. 8, one end of the crankshaft 18 is matched with the connecting rod, the other end extends to the lower part of the movement 3 to form a stepped shaft, the stepped shaft is matched with a preset stepped hole in the rotor 2, and a positioning hole is formed in the end face of a section of the crankshaft 18 matched with the rotor 2.

When the rotor 2 is used, the stepped hole on the rotor 2 is sleeved outside the mandrel 9, the end face of the rotor 2 is abutted against the end face of the cylinder body 1, one end of the mandrel 9 is inserted into the positioning hole, at the moment, the telescopic piece 7 drives the cylinder body 1, the rotor 2 and the movement 3 to ascend upwards at a uniform speed and slowly, one end of the crankshaft 18 of the connecting rod contacts the abutting piece 6, the rotor 2 is gradually pressed into the stepped shaft of the crankshaft 18 of the movement 3 along with the continuous jacking of the telescopic piece 7, at the moment, the pressure monitoring element 5 arranged on the abutting component 4 can be observed, after the rotor 2 is pressed into the required pressure value, the telescopic piece 7 is retracted to release the pressure, after the telescopic piece is retracted to be in place, the rotor 2 and the movement 3 after the press fitting is taken down, and the press fitting is completed.

The telescopic part 7 can adopt telescopic parts 7 such as jack, hydro-cylinder, electric jar, cylinder, and the like, and telescopic part 7 can drive cylinder body 1 along the axis direction reciprocating motion in its shaft hole, as shown in fig. 1, fig. 2, satisfies the action demand and the output demand that the pressure equipment was advanced and is returned after the pressure equipment, and the motion stroke of telescopic part 7 output sets up according to the interval of pressure equipment stroke and pressure equipment district.

Optionally, taking the jack as an example of the telescopic piece 7, the top end of the jack is connected with an upper plate, the upper plate is matched with the bottom surface of the cylinder body 1, and meanwhile, a connecting hole is formed in the upper plate, and the cylinder body 1 is fixed on the upper plate at the top end of the jack through the connecting piece. The bottom of jack is connected with the hypoplastron, is equipped with the connecting hole on the hypoplastron, is fixed in the chassis of frame 8 with cylinder body 1 through the connecting piece. The connecting piece can be a detachable fastening piece such as a bolt, a screw and the like, or can be a non-detachable connecting piece such as a buckle, a rivet and the like.

Optionally, the frame 8 is designed into detachable construction, connects through the bracing piece between roof and the chassis, and the connection roof can be dismantled to bracing piece one end, the connection chassis can be dismantled to the other end, and the counter-force frame of pressing subassembly 4 is pressed as after the roof connection bracing piece, simultaneously, as the counter-force frame of extensible member 7 behind chassis connection bracing piece.

In other alternative embodiments, the end of the support rod may be externally threaded, and threaded holes may be formed in the locations where the top plate and the bottom frame connect the support rod, and the connection relationship may be established by the cooperation of the threaded holes and the external threads. In addition, the support bars are configured in at least two, as shown in fig. 1, two symmetrically distributed support bars are employed.

The mandrel 9 is matched with the cylinder body 1 to form a cold pressing head assembly, the cold pressing head assembly is integrally arranged on the telescopic piece 7, and the telescopic piece 7 drives the position to be adjusted, so that the press fitting and the retraction actions are completed.

The mandrel 9 is a stepped shaft formed by butt joint of the positioning shaft section 13 and the sleeving shaft section 14, one end of the sleeving shaft section 14 is slidably arranged in the shaft hole of the cylinder body 1, the other end of the sleeving shaft section 14 is positioned outside the shaft hole of the cylinder body 1, the length of the mandrel 9 positioned outside the shaft hole is changed through sliding of the mandrel 9 relative to the shaft hole, the stretching and shortening actions are achieved, the end part of the positioning shaft section 13 faces the pressing component 4, the positioning shaft section 13 and the positioning hole are kept to be coaxially distributed, and after the telescopic piece 7 drives the cylinder body 1 and the mandrel 9 to act, the positioning shaft section 13 of the mandrel 9 can be coaxially matched with the positioning hole of the crankshaft 18 of the movement 3.

After the pressing component 4 is erected above the axis of the cylinder body 1, the pressing piece 6 arranged on the pressing component faces the end part of the positioning shaft section 13, meanwhile, the pressing piece 6 and the positioning shaft section 13 are coaxially arranged, a press-fitting area for accommodating the movement 3 is formed between the pressing piece 6 and the end surface of the cylinder body 1, and the spindle 9 is used for sleeving and positioning the rotor 2 to be pressed.

As shown in fig. 1, the telescopic member 7 is connected to the other end surface of the cylinder body 1 far away from the pressing component 4, and the distance between the cylinder body 1 and the pressing component 6 can be adjusted when the telescopic member 7 drives the cylinder body 1 to act.

As shown in fig. 3 and 4, the diameter of the positioning shaft section 13 is smaller than that of the sleeving shaft section 14, one end of the sleeving shaft section 14 positioned in the shaft hole is abutted with the elastic piece 11, the elastic piece 11 acts on the end part of the mandrel 9 along the axial direction, one end of the sleeving shaft section 14 away from the positioning shaft section 13 is provided with the sliding shaft section 15, and the sliding shaft section 15 is in sliding fit with the shaft hole and is abutted with the elastic piece 11.

It should be noted that the elastic member 11 provides a resilient force to the spindle 9, and before the press-fitting force is applied to the rotor 2, the sleeve-shaped shaft section 14 of the spindle 9 is kept partially outside the shaft hole of the cylinder 1, so as to provide positioning for the rotor 2. Optionally, the elastic element 11 is a compression spring, a reed or other element, and the maximum deformation stroke of the elastic element 11 is larger than the maximum displacement path of the mandrel 9 relative to the shaft hole, so that the elastic element 11 keeps acting on the mandrel 9.

In other alternative embodiments, the radial dimension of the elastic element 11 is slightly smaller than the axial hole dimension and can be stably abutted against the sliding shaft section 15 of the spindle 9.

As shown in fig. 4, the sleeve shaft section 14 may be slidably engaged with the shaft hole in the sleeve, and the sliding shaft section 15 may be positioned in the shaft hole and held in contact with the elastic member 11 as a contact structure. It will be appreciated that the sliding fit of the spindle 9 with the shaft hole of the cylinder 1 constrains the position of the spindle 9 and enables the spindle 9 to move axially, so that the sliding fit of the sleeve shaft section 14 with the shaft hole and the sliding shaft section 15 with the shaft hole can meet the above requirements.

The cylinder body 1 has a cylindrical structure, and a shaft hole is arranged in the middle, and the shaft hole can be an equal-diameter hole or a stepped hole as shown in fig. 4. The end face of the cylinder body 1 corresponding to one end of the shaft hole is connected with a bottom plate 12 which is abutted against the elastic piece 11.

Aiming at the problem that the existing rotor 2 press-mounting equipment cannot be adapted to rotors 2 and crankshafts 18 with various specifications, a plurality of mandrels 9 with different specifications are configured to be adapted to the rotors 2 with different specifications, the mandrels 9 and the cylinder body 1 are detachably connected, and press-mounting of the rotors 2 with different specifications is realized by replacing the mandrels 9.

Specifically, dabber 9 is equipped with a plurality of, and dabber 9 can dismantle with cylinder body 1 and be connected, and the shaft hole is equipped with the anticreep ring towards the one end that supports pressing assembly 4, can change dabber 9 through dismouting anticreep ring.

The diameters of the sleeved shaft sections 14 of the different mandrels 9 are arranged in a different mode, the diameters of the sliding shaft sections 15 are equal and can be attached to the inner wall of the shaft hole, the mandrels 9 and the shaft hole are kept coaxial, and therefore the rotor 2 restrained by the mandrels 9 and the crankshaft 18 of the movement 3 are kept coaxial.

The shaft hole opening position is provided with a limiting ring, the limiting ring can restrict the mandrel 9 from falling out, and simultaneously, after the limiting ring is removed, the mandrels 9 with different specifications can be replaced to adapt to the rotors 2 and the crankshafts 18 with different specifications, the sliding shaft sections 15 corresponding to the different mandrels 9 are configured to be the same, the sliding shaft sections are kept in a required coaxial state after being matched with the shaft hole, required precision can be achieved before and after the replacement of the different specifications, and the adjustment speed is improved, so that the debugging efficiency is improved.

In addition, one end of the positioning shaft section 13 facing the pressing component 4 is a conical tip, and a conical transition section is arranged at the joint of the positioning shaft section 13 and the sleeved shaft section 14. The end of the positioning shaft section 13 of the mandrel 9 is provided with a conical tip, the positioning shaft section 13 of the mandrel 9 is matched with the positioning hole, and the conical transition section is configured, so that the collision between the mandrel 9 and the stepped hole on the rotor 2 and the mandrel 9 can be reduced, and the assembly error problem caused by the damage of the rotor 2 can be reduced.

The cylinder body 1 is connected with annular guard board 10 towards the one end of supporting the pressure component 4, annular guard board 10 arranges around dabber 9, annular guard board 10 combine cylinder body 1 terminal surface to form the bearing zone that restraines rotor 2 position.

As shown in fig. 5, 6 and 7, the pressing assembly 4 includes a pressing member 6, a supporting member and a pressure monitoring element 5, the pressure monitoring element 5 is located in the supporting member, one end of the supporting member is connected with the frame 8, and the other end of the supporting member is connected with the pressing member 6.

The pressing piece 6 is coaxially and rotatably connected with the supporting piece, the pressing piece 6 comprises a circular pressing plate 16 and an arc-shaped guard plate 17 which are coaxially arranged, the arc-shaped guard plate 17 is connected to the edge of the circular pressing plate 16 to form a semi-surrounding structure which is matched with the end part of the crankshaft 18 of the movement 3 so as to avoid a connecting rod structure matched with the crankshaft 18, the end face of the circular pressing plate 16 is kept to be abutted with the end part of the crankshaft 18, and acting force in the press-fitting process is borne.

Optionally, the supporting piece is formed by butt joint of two sections of solid round steel, steel materials used for the round steel are cast iron, 45# steel, aluminum alloy and other materials, so that the compression strength of the round steel is guaranteed, the supporting of the pressing component 4 is not deformed, and the thickness of the steel materials is at least 6 mm. The pressure monitoring element 5 is clamped between two sections of solid round steel, and pressure data along the axial direction are measured; the pressure monitoring element 5 may be a pressure sensor or the like.

It will be appreciated that one end of the crankshaft 18 where the positioning hole is provided is eccentric to the other end of the crankshaft 18, and after the mandrel 9 is coaxially provided with the positioning hole, the axis of the other end structure of the crankshaft 18 is parallel to but not coincident with the positioning hole, and therefore, the pressing surface area of the circular pressing plate 16 is configured to be larger than the end surface area of the other end of the crankshaft 18, so that it can be held in abutment against the other end of the crankshaft 18 in each state and exert a reaction force.

The pressing piece 6 and the supporting piece are in rotational connection by adopting a bearing, and in order to realize axial stress, the bearing can adopt a thrust ball bearing, a tapered roller bearing and the like.

The pressure value is measured by the pressure sensor in the cold pressing process of the rotor 2, and the clearance between the rotor 2 component and the movement 3 required by the test can be accurately assembled by simple calculation.

The central axes of the mandrel 9, the pressing piece 6, the shaft hole and the telescopic piece 7 are all kept coincident, so that assembly errors caused by inclination in the process of pressing the movement 3 into the rotor 2 component are avoided.

The mandrel 9 is a stepped shaft and is axially divided into different functional sections, the positioning shaft section 13 is matched with a positioning hole of a crankshaft 18 of the movement 3 to realize positioning constraint in the press-fitting direction, the sleeve shaft section 14 preloads the rotor 2, and the rotor 2 is guided when the rotor 2 is pushed to be pressed, so that the rotor 2 is prevented from generating deviation; the sliding shaft section 15 at the tail end of the positioning shaft section 13 is combined, so that the gesture of the mandrel 9 can be kept coaxial with the shaft hole, the mandrel 9 can be matched with the shaft hole in a sliding manner to realize telescopic action, and the action requirement in the press mounting process is met.

Example 2

In another exemplary embodiment of the present invention, as shown in fig. 1-8, a method of operation is provided.

With the rotor cold press-fitting apparatus for a compressor as described in embodiment 1, comprising the steps of:

the counter bore of the rotor 2 passes through the positioning shaft section 13 and is sleeved outside the sleeved shaft section 14, and one end of the rotor 2 is abutted against the end face of the cylinder body 1;

the movement 3 is positioned in the press-fit area, the positioning shaft section 13 is coaxially matched with the positioning hole, and the telescopic piece 7 drives the cylinder body 1, the rotor 2 and the movement 3 to move until one end, far away from the positioning hole, of the crankshaft 18 of the movement 3 contacts the abutting piece;

the telescopic piece 7 pushes the rotor 2 to move, the sleeved shaft section 14 of the mandrel 9 gradually retracts into the shaft hole until the rotor 2 is separated from the sleeved shaft section 14 and sleeved on the crankshaft 18, the telescopic piece 7 is reset, and the movement 3 after the rotor 2 is pressed down is taken down.

Alternatively, the diameter of the sleeve shaft section 14 is equal to the diameter of the section of the crankshaft 18 on which the rotor 2 is mounted, keeping the section of the crankshaft 18 on which the rotor 2 is mounted coaxial with the spindle 9 during mounting.

In addition, the pressure monitoring element 5 can be used for monitoring the pressure in the press fitting process, and after the required pressure value is reached in the press fitting process, the rotor 2 is judged to be pressed in place, and the retraction of the telescopic piece 7 is controlled.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cold press assembly device for a rotor of a compressor, comprising:

2. The cold press assembly device for a rotor of a compressor according to claim 1, wherein the diameter of the positioning shaft section is smaller than that of the sleeve shaft section, and an elastic member is abutted to one end of the sleeve shaft section in the shaft hole and acts on the end of the mandrel in the axial direction.

3. The cold press assembly device for a rotor of a compressor according to claim 2, wherein a sliding shaft section is provided at an end of the sleeve shaft section away from the positioning shaft section, and the sliding shaft section is slidably engaged with the shaft hole and abuts against the elastic member.

4. The cold press assembly device for the rotor of the compressor according to claim 3, wherein a plurality of mandrels are arranged, the mandrels are detachably connected with the cylinder body, and an anti-drop ring is arranged at one end of the shaft hole, which faces the pressing assembly; the diameters of the sleeved shaft sections of different mandrels are arranged in a different mode, and the diameters of the sliding shaft sections are equal and can be attached to the inner wall of the shaft hole.

5. The cold press assembly device for a rotor of a compressor according to claim 1, wherein one end of the positioning shaft section facing the pressing assembly is a conical tip, and a conical transition section is arranged at the joint of the positioning shaft section and the sleeved shaft section.

6. The cold press assembly device for a rotor of a compressor according to claim 1, wherein one end of the cylinder body facing the pressing assembly is connected with an annular guard plate, the annular guard plate is arranged around a mandrel, and the mandrel and the annular guard plate form a bearing area for restraining the position of the rotor in combination with the end face of the cylinder body.

7. The cold press assembly device for a rotor of a compressor according to claim 1, wherein the pressing assembly further comprises a supporting member and a pressure monitoring member, the pressure monitoring member is located in the supporting member, and one end of the supporting member is connected to the frame, and the other end of the supporting member is connected to the pressing member.

8. The cold press assembly device for a rotor of a compressor according to claim 7, wherein the pressing member is coaxially and rotatably connected with the supporting member, the pressing member comprises a circular pressing plate and an arc-shaped guard plate which are coaxially arranged, and the arc-shaped guard plate is connected with the edge of the circular pressing plate to form a semi-surrounding structure which is matched with the end part of the crankshaft of the movement.

9. A method of operation, using the rotor cold press-fitting device for compressors according to any of claims 1-8, characterized by comprising:

10. The method of claim 9, wherein the sleeve shaft section is of equal diameter to the crankshaft mounted rotor section, and wherein the crankshaft mounted rotor section is maintained coaxial with the spindle during the mounting process.