Device for mounting a scroll compressor crank rotor assembly into a compressor

Abstract

The application provides a device for mounting a scroll compressor crankshaft rotor assembly into a compressor, comprising a frame, a lower part of the frame is fixed with a positioning disc, a scroll compressor pump shell assembly with a stator is mounted on the positioning disc; a jacking shaft is arranged on the lower part of the frame; a guide block capable of lifting is arranged on the upper part of the frame, the bottom of the guide block is provided with a plurality of guide spacers; the crankshaft rotor assembly is located above the scroll compressor pump shell assembly and is connected with a rotor lifting device for driving the lifting of the crankshaft rotor assembly; after the spacers enter the stator, the crankshaft rotor assembly is lowered and passes through the hole of the crankshaft rotor assembly to enter the stator, and under the guidance of the spacers, the top of the jacking shaft which has been lifted is contacted, the jacking shaft is lowered until the crankshaft rotor assembly is completely entered into the stator, and the mounting is completed. The application no longer adopts the free-fall type assembly of the rotor, but adopts the slow descending mode of the jacking shaft to mount the rotor, so that the damage of the parts is prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of scroll compressor assembly, in particular to a device for installing scroll compressor crankshaft rotor assembly into compressor. BACKGROUND

[0002] The scroll compressor crankshaft rotor assembly has axial and circumferential size requirements during assembly, and the stator and rotor should not be in contact during installation to avoid the rotor assembly from damaging the stator coil and causing insulation and pressure resistance problems of the compressor. The existing scroll compressor crankshaft rotor assembly installation is free-fall type, the rotor directly relies on gravity to descend after passing through the guide device, and stops after hitting the lower support and vice support seat. This method is easy to cause damage to mechanical parts, and the greater the power of the compressor, the greater the weight of the crankshaft assembly, and the more serious the damage to the parts. SUMMARY

[0003] According to the above technical problem, a device for installing scroll compressor crankshaft rotor assembly into compressor is provided.

[0004] The technical means adopted by the present application are as follows:

[0005] A device for installing scroll compressor crankshaft rotor assembly into compressor, comprising a rack, the lower part of the rack is fixed with a positioning disc, and a scroll compressor pump shell assembly with a stator is installed on the positioning disc; the lower part of the rack is provided with a jacking shaft and a jacking shaft lifting device for driving the jacking shaft to lift, the top of the jacking shaft passes through the positioning disc, enters the stator of the scroll compressor pump shell assembly, and is coaxially arranged with the stator;

[0006] The upper part of the rack is fixed with a guide rail, the guide rail is provided with a guide block in sliding fit with the guide rail, the center of the guide block has a crankshaft rotor assembly through hole, and the bottom of the guide block has a plurality of guide pieces; the top of the guide rail is provided with a guide block lifting device for driving the guide block to lift along the guide rail and making the guide pieces enter and exit the stator;

[0007] The crankshaft rotor assembly is located above the scroll compressor pump shell assembly, and is connected with a rotor lifting device for driving it to lift;

[0008] After the guide block lifting device drives the guide pieces to enter the stator, the rotor lifting device drives the crankshaft rotor assembly to descend and pass through the crankshaft rotor assembly through hole to enter the stator, and under the guidance of the guide pieces, the top of the jacking shaft which has been lifted is contacted, and then the jacking shaft lifting device drives the jacking shaft to slowly descend until the crankshaft rotor assembly completely enters the stator to complete the installation. During the jacking shaft descending process, the assembly state of the rotor during descending process with other parts is observed at all times.

[0009] Preferably, the wedge is arranged to be inclined, the distance between the bottom of the wedge and the axis of the through hole of the crank rotor assembly is smaller than the distance between the top of the wedge and the axis of the through hole of the crank rotor assembly. The wedge is made of elastic material T7, and the wedge is used to center the crank rotor assembly in the axial direction during the descent of the crank rotor assembly, and the wedge is driven to change from the inclined state to the vertical state during the descent of the crank rotor assembly, and the wedge is also used to prevent the crank rotor assembly from being scratched by the stator.

[0010] Preferably, the jacking shaft lifting device comprises a lead screw nut sleeved on the jacking shaft and threadedly matched with the jacking shaft, and a servo motor connected with the lead screw nut and used to drive the lead screw nut, and the servo motor is fixed on the rack. Preferably, the switch of the servo motor is a foot switch, so that the servo motor can be started and stopped at any time, and the assembly state of the rotor and other parts during the descent of the rotor can be observed.

[0011] Preferably, the positioning disc is provided with a positioning groove matched with the scroll compressor pump shell assembly, and the center of the positioning groove is provided with a jacking shaft through hole for the jacking shaft to pass through.

[0012] Preferably, the guide block lifting device is a first electric hoist, and the output end of the first electric hoist is connected with the guide block through a steel cable.

[0013] Preferably, the rotor lifting device is a second electric hoist, and the output end of the second electric hoist is used to hoist the crank rotor assembly.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] The present application does not use the rotor free-fall type descent, but uses the jacking shaft to bear the rotor. After the jacking shaft contacts the rotor, the jacking shaft slowly descends to realize the slow descent of the stator, and the damage of the parts caused by the direct falling of the rotor and the impact of the lower support is avoided. The wedge is used as a guide device, the wedge is lifted by the guide block lifting device, and the wedge is strictly limited in the circumferential direction by the guide rail, so that the wedge is accurately inserted into the stator, and the wedge is used to center the crank rotor assembly, so that the crank rotor assembly is coaxial with the stator. Moreover, the wedge can also prevent the stator and the crank rotor assembly from being scratched. After the assembly of the crank rotor assembly is completed, the guide block can conveniently pull out the wedge.

[0016] Based on the above reasons, the present application can be widely popularized in the field of scroll compressor rotor stator assembly. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments or prior art description. Obviously, the drawings described in the following embodiments are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without any creative effort.

[0018] Fig. 1 The figure is a schematic view of a device for installing a scroll compressor crankshaft rotor assembly into a compressor.

[0019] Fig. 2 The figure is a front view of a device for installing a scroll compressor crankshaft rotor assembly into a compressor.

[0020] In the figure: 1, frame; 2, positioning disc; 21, positioning groove; 3, jacking shaft; 4, jacking shaft lifting device; 41, screw nut; 42, servo motor; 5, guide block; 51, guide rail; 52, crankshaft rotor assembly through hole; 53, plug; 54, guide block lifting device; 6, crankshaft rotor assembly; 7, scroll compressor pump shell assembly. DETAILED DESCRIPTION

[0021] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0022] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort are within the scope of protection of the present application.

[0023] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0024] The foregoing is considered as illustrative only of the principles of the application. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the application to the exact construction and practice described. Accordingly, all such variations are intended to be included within the scope of the present application as defined in the following claims, along with full equivalents thereof.

[0025] In the description of the present application, it is to be understood that the orientation terms such as "front", "back", "up", "down", "left", "right", "transverse", "vertical", "horizontal", "top", "bottom", etc. indicate the orientation or positional relationship shown in the drawings, which are merely for the convenience of describing and simplifying the present application, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application. The orientation terms "inner", "outer" refer to the inner and outer relative to the contour of the components themselves.

[0026] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper", etc. can be used herein to describe the spatial positional relationship of one device or feature with respect to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the devices described in the drawings. For example, if the devices in the drawings are inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0027] In addition, it should be noted that the use of the terms "first", "second", etc. to define parts of components is merely for the convenience of distinguishing the corresponding parts of components, and the above terms have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present application.

[0028] As Figs. 1-2As shown, a device for installing scroll compressor crankshaft rotor assembly into compressor, comprising a rack 1, the lower part of the rack 1 is fixed with a positioning disc 2, the positioning disc 2 is provided with a positioning groove 21 for placing scroll compressor pump shell assembly with stator, the outer diameter of the positioning groove 21 is matched with the outer diameter of the scroll compressor pump shell assembly, the center of the positioning groove 21 has a jacking shaft passing hole for the jacking shaft 3 to pass through. The lower part of the rack 1 is provided with a jacking shaft 3 and a jacking shaft lifting device 4 for driving the jacking shaft 3 to lift, the top of the jacking shaft 3 passes through the positioning disc 2 through the jacking shaft passing hole, enters the stator of the scroll compressor pump shell assembly 7, and is coaxially arranged with the stator;

[0029] The jacking shaft lifting device 4 comprises a lead screw nut 41 sleeved on the jacking shaft 3 and threadedly matched with the jacking shaft, the lead screw nut 41 is connected with a servo motor 42 for driving the lead screw nut 41, and the servo motor 42 is fixed on the rack 1. In order to keep the jacking shaft 3 only lifting, a plurality of sliding sleeves matched with the jacking shaft can be used, and the sliding sleeves are fixed on the rack 1. In order to save space, the servo motor 42 can be placed horizontally, the output end of the servo motor 42 is matched with a bevel gear fixed on the outside of the lead screw nut 41, a shell can be sleeved on the outside of the lead screw nut, the shell is fixed on the rack 1, and the shell is provided with a connecting window, so that the meshing between the two bevel gears is facilitated. The switch of the servo motor 42 adopts a foot pedal type switch, so that the servo motor 42 can be started and stopped at any time, and the assembly state of the crankshaft rotor assembly 6 and other parts during the descending process is observed.

[0030] The upper part of the rack 1 is fixed with a guide rail 51, the guide rail 51 is provided with a guide block 5 in sliding fit, the center of the guide block 5 has a crankshaft rotor assembly passing hole 52, and the bottom of the guide block 5 has a plurality of plug pieces 53 for guiding; the plug pieces 53 are arranged obliquely, the distance between the bottom of the plug pieces 53 and the axis of the crankshaft rotor assembly passing hole 52 is smaller than the distance between the top of the plug pieces 53 and the axis of the crankshaft rotor assembly passing hole 52. The plug pieces 53 are made of T7 material with a certain elasticity, and the shape surrounded by the plurality of plug pieces 53 can be regarded as a circular truncated cone shape, and the outer diameter of the bottom of the circular truncated cone is smaller than the outer diameter of the top. The top of the guide rail 51 is provided with a guide block lifting device 54 for driving the guide block 5 to lift along the guide rail 51 and making the plug pieces 53 enter and exit the stator; the guide block lifting device 54 is a first electric hoist, and the output end of the first electric hoist is connected with the guide block 5 through a steel cable.

[0031] The crankshaft rotor assembly 6 is located above the scroll compressor pump shell assembly 7, and is connected with a rotor lifting device for driving the crankshaft rotor assembly 6 to lift; the rotor lifting device adopts a second electric hoist (not shown), and the output end of the second electric hoist hoists the crankshaft rotor assembly 6.

[0032] After the guide block lifting device 54 drives the plug 53 into the stator, the rotor lifting device drives the crank rotor assembly 6 to descend and pass through the hole 52 of the crank rotor assembly to enter the stator, and under the guidance of the plug 53, the top of the jacking shaft 3 that has been raised is contacted, and then the jacking shaft lifting device 4 drives the jacking shaft 3 to slowly descend until the crank rotor assembly 6 is completely in the stator, and the installation is completed. During the process of the jacking shaft 3 descending, the assembly state of the crank rotor assembly 6 during the descending process and other components is observed at all times.

[0033] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A device for mounting a scroll compressor crank rotor assembly into a compressor, characterized by, The machine frame is provided with a positioning disc fixed on the lower part of the machine frame, and a scroll compressor pump shell assembly with a stator is installed on the positioning disc; the lower part of the machine frame is provided with a jacking shaft and a jacking shaft lifting device for driving the jacking shaft to lift, and the top of the jacking shaft penetrates through the positioning disc and enters the stator of the scroll compressor pump shell assembly and is coaxially arranged with the stator; The upper part of the machine frame is fixed with a guide rail, and the guide rail is provided with a guide block in sliding fit with the guide rail, the center of the guide block is provided with a crankshaft rotor assembly penetrating hole, and the bottom of the guide block is provided with a plurality of guide pieces; The crankshaft rotor assembly is located above the scroll compressor pump shell assembly and is connected with a rotor lifting device for driving the crankshaft rotor assembly to lift; After the guide pieces enter the stator, the crankshaft rotor assembly is lowered and penetrates through the crankshaft rotor assembly penetrating hole and enters the stator, and under the guidance of the guide pieces, the top of the jacking shaft which has been lifted is contacted, the jacking shaft is lowered until the crankshaft rotor assembly is completely installed in the stator.

2. A device for mounting a scroll compressor crank rotor assembly into a compressor according to claim 1, wherein, The guide pieces are obliquely arranged, and the distance between the bottom of the guide pieces and the axis of the crankshaft rotor assembly penetrating hole is smaller than the distance between the top of the guide pieces and the axis of the crankshaft rotor assembly penetrating hole.

3. A device for mounting a scroll compressor crank rotor assembly into a compressor as claimed in claim 1, wherein, The jacking shaft lifting device comprises a lead screw nut sleeved on the jacking shaft and in threaded fit with the jacking shaft, the lead screw nut is connected with a servo motor for driving the lead screw nut, and the servo motor is fixed on the machine frame.

4. A device for mounting a scroll compressor crank rotor assembly into a compressor as claimed in claim 1, wherein, The positioning disc is provided with a positioning groove matched with the scroll compressor pump shell assembly, and the center of the positioning groove is provided with a jacking shaft penetrating hole for the jacking shaft to penetrate.

5. A device for mounting a scroll compressor crank rotor assembly into a compressor as claimed in claim 1, wherein, The guide block lifting device adopts a first electric hoist, and the output end of the first electric hoist is connected with the guide block through a steel cable.

6. A device for mounting a scroll compressor crank rotor assembly into a compressor according to claim 1, wherein, The rotor lifting device adopts a second electric hoist, and the output end of the second electric hoist hoists the crankshaft rotor assembly.

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