Fixing assembly and compressor system

Abstract

The embodiment of the utility model provides a fixing assembly and a compressor system, and relates to the technical field of compressors. The fixing assembly comprises a first connecting piece, a second connecting piece and an adjusting piece, a first mounting hole is formed in the first connecting piece, and the first connecting piece is used for being connected with a chassis; an adjusting hole is formed in the second connecting piece and extends in the Z direction; the adjusting piece penetrates through the adjusting hole and the first mounting hole and is used for connecting the first connecting piece and the second connecting piece; the adjusting piece can move in the extending direction of the adjusting hole. The end, away from the first connecting piece, of the second connecting piece is used for being detachably connected with the compressor. By changing the position of the adjusting piece in the adjusting hole, the connecting position of the second connecting piece and the first connecting piece can be adjusted, so that the first connecting piece and the second connecting piece can meet the mounting requirements of chassis with different thicknesses and compressors with different types, and the assembly height of the first connecting piece and the second connecting piece meets the preset requirements. And the fixing assembly has universality.

Description

TECHNICAL FIELD

[0001] The utility model relates to compressor technical field, specifically, relate to a fixed subassembly and compressor system. BACKGROUND

[0002] A compressor is a mechanical device used to increase the pressure of a gas or compress it into a smaller volume. By increasing the density between gas molecules, the compressor changes the physical properties of the gas, allowing it to be stored, transported or processed more efficiently. Compressors are widely used in various industries, commercial and household equipment, such as heat pumps, air conditioners, refrigerators, refrigeration systems, pneumatic tools, natural gas transportation, oil refining, etc.

[0003] However, there are many types of compressors at present, and the thickness of their installation chassis or fixing plates is not uniform, which leads to the fact that the screw rods used by manufacturers when manufacturing compressor installation chassis or fixing plates are inconsistent, and even custom-made screw rods are needed to ensure that the assembly size meets the design requirements. And because the compressor gas side is biased, it is difficult to ensure that the gap between each compressor rubber foot meets the drawing requirements. INVENTION CONTENTS

[0004] The utility model provides a kind of fixed subassembly and compressor system, it has universality, it can be applicable to different types of compressor and different thickness installation chassis assembly, ensure that the assembly between both meets drawing installation requirements.

[0005] The embodiment of the utility model can be implemented as follows:

[0006] The embodiment of the utility model provides a kind of fixed subassembly, it includes:

[0007] First connecting piece, the first connecting piece is equipped with first installation hole, the first connecting piece is used to connect with chassis;

[0008] Second connecting piece, the second connecting piece is equipped with adjusting hole, the adjusting hole extends along Z direction;

[0009] Adjusting piece, the adjusting piece is threaded in the adjusting hole and the first installation hole, to be used for connecting the first connecting piece and the second connecting piece;The adjusting piece can be moved along the extension direction of the adjusting hole;

[0010] Among them, the second connecting piece is used for being detachably connected with compressor away from one end of the first connecting piece.

[0011] In optional implementation, the second connecting piece includes connecting part and adjusting part, the connecting part and the adjusting part are connected at an angle, the connecting part is used for being detachably connected with the compressor;The adjusting part is equipped with the adjusting hole.

[0012] In an optional embodiment, the connecting part comprises a first connecting part and a second connecting part, the first connecting part and the second connecting part are connected, one end of the second connecting part away from the first connecting part is connected with the adjusting part at an angle; the thickness of the first connecting part is less than the thickness of the second connecting part; the first connecting part is used for detachable connection with the compressor.

[0013] In an optional embodiment, the first connecting part is provided with a second mounting hole, the second mounting hole is used for penetrating a threaded fastener to realize detachable connection of the first connecting part with the compressor.

[0014] In an optional embodiment, the number of the adjusting holes and the first mounting holes is multiple, multiple adjusting holes are arranged at intervals along the X direction, and multiple adjusting holes are arranged one-to-one with multiple first mounting holes; the X direction is perpendicular to the Z direction.

[0015] In an optional embodiment, the second connecting part is in the shape of "L".

[0016] In an optional embodiment, the first connecting part is detachably connected with the bottom disc.

[0017] In an optional embodiment, the first connecting part is connected with the bottom disc through a threaded fastener.

[0018] The embodiment of the utility model also provides a compressor system, including bottom disc, compressor and the fixed assembly in any of the above embodiments, the bottom disc is connected with the first connecting piece fixedly, one end of the second connecting piece away from the first connecting piece is detachably connected with the compressor, and there is an installation gap between the second connecting piece and the compressor.

[0019] In an optional embodiment, the compressor comprises a compressor body and multiple mounting seats, the multiple mounting seats are arranged on the bottom disc, and the multiple mounting seats are connected with the compressor body; the multiple mounting seats are arranged at intervals.

[0020] The number of the fixed assemblies is multiple, and multiple fixed assemblies correspond to multiple mounting seats; for each fixed assembly, the second connecting piece is detachably connected with the corresponding mounting seat.

[0021] The fixed assembly and the compressor system of the embodiment of the utility model have the following advantages, for example:

[0022] The fixing assembly comprises a first connecting piece, a second connecting piece and an adjusting piece, the first connecting piece is provided with a first mounting hole, and the first connecting piece is used for being connected with the bottom disc; the second connecting piece is provided with an adjusting hole, and the adjusting hole extends along the Z direction; the adjusting piece is arranged in the adjusting hole and the first mounting hole, so as to connect the first connecting piece and the second connecting piece; the adjusting piece can move along the extension direction of the adjusting hole; wherein, the end of the second connecting piece away from the first connecting piece is used for being detachably connected with the compressor. By changing the position of the adjusting piece in the adjusting hole, the connecting position of the second connecting piece and the first connecting piece can be adjusted, so that the first connecting piece and the second connecting piece can meet the installation requirements of the bottom disc with different thicknesses and the compressor with different types, and the assembly height of the two can meet the preset requirements. Moreover, the fixing assembly can be matched with the bottom disc with different thicknesses by using the same bolt and other threaded fasteners, so that the assembly gap of the glue feet of the compressor can meet the installation requirements, and the fixing assembly has universality. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0024] Figure 1 A schematic diagram of a compressor system provided in an embodiment of the present application;

[0025] Figure 2 A partial schematic diagram of a first perspective of a compressor system provided in an embodiment of the present application;

[0026] Figure 3 A partial schematic diagram of a second perspective of a compressor system provided in an embodiment of the present application;

[0027] Figure 4 A schematic diagram of a second connecting piece provided in an embodiment of the present application;

[0028] Figure 5 A schematic diagram of a first connecting piece provided in an embodiment of the present application.

[0029] Legend: 1000-compressor system; 100-fixing assembly; 110-first connecting piece; 111-first mounting hole; 120-second connecting piece; 121-connection part; 1211-first connection part; 12111-second mounting hole; 1212-second connection part; 122-adjusting part; 1221-adjusting hole; 130-adjusting piece; 200-bottom disc; 300-compressor; 310-compressor body; 320-mounting seat; 400-mounting gap. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0031] Therefore, the detailed description of the embodiments of the present application provided below in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0032] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0033] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0034] In addition, if the terms "first", "second" and the like appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0036] A compressor is a mechanical device used to increase the pressure of a gas or compress it into a smaller volume. Compressors change the physical properties of a gas by increasing the density between its molecules, allowing it to be stored, transported, or processed more efficiently. Compressors are widely used in various industries, businesses, and household devices, such as heat pumps, air conditioners, refrigerators, refrigeration systems, pneumatic tools, natural gas transportation, oil refining, and other fields. However, there are many types of compressors currently available, and the thickness of their mounting base or fixing plate is not uniform, which leads to the use of inconsistent screw rods by manufacturers when producing compressor mounting bases or fixing plates, and even requires custom-made screw rods to ensure that the assembly dimensions meet the design requirements. Moreover, due to the uneven weight distribution of the compressor gas side, it is difficult to ensure that the gap between each compressor rubber foot meets the drawing requirements.

[0037] Based on this, please refer to Figure 1 、 Figure 2 and Figure 3 The fixing assembly 100 provided in the embodiments of the present application can effectively improve the technical problems mentioned above. The fixing assembly 100 has universality and can be applied to different types of compressors 300 and different thicknesses of mounting bases 200 assembly, ensuring that the assembly between the two meets the drawing installation requirements. The fixing assembly 100 is applied to the compressor system 1000, which can be applied to heat pumps, air conditioners, and other equipment. The system or equipment with the fixing assembly 100 has the same functions as described above, which are not limited here.

[0038] Figure 1 A schematic view of the compressor system 1000 provided in the embodiments of the present application; Figure 2 A partial schematic view of the compressor system 1000 from the first perspective provided in the embodiments of the present application;

[0039] Figure 3 A partial schematic view of the compressor system 1000 from the second perspective provided in the embodiments of the present application.

[0040] Please refer to Figure 1 、 Figure 2 and Figure 3 The compressor system 1000 in the present embodiment includes a base 200, a compressor 300, and a fixing assembly 100. The base 200 is fixedly connected with a first connecting piece 110, and a second connecting piece 120 is detachably connected with the compressor 300 at an end away from the first connecting piece 110. An installation gap 400 exists between the second connecting piece 120 and the compressor 300. Of course, the compressor system 1000 can also include structures such as evaporators and condensers, which are combined together to form heat pumps or air conditioners and other equipment. The compressor system 1000 also includes other structures according to the actual use scenario and the specific implementation function, which are not limited here.

[0041] In order to ensure the connection strength of the compressor 300 and the chassis 200 and the stability of the installation of the compressor 300, the compressor 300 in the embodiment comprises a compressor body 310 and a plurality of mounting seats 320, the plurality of mounting seats 320 are arranged on the chassis 200, and the plurality of mounting seats 320 are connected with the compressor body 310; the plurality of mounting seats 320 are arranged at intervals; the number of the fixing assemblies 100 is a plurality, the plurality of fixing assemblies 100 correspond to the plurality of mounting seats 320 one by one; and the second connecting piece 120 is detachably connected with the corresponding mounting seat 320 for each fixing assembly 100. Specifically, the number of the mounting seats 320 and the fixing assemblies 100 in the embodiment is three, the three mounting seats 320 are arranged at intervals around the central axis of the compressor body 310, each mounting seat 320 is connected with the chassis 200 through a fixing assembly 100, and the fixing assembly 100 is used to adjust the installation height between the compressor body 310 and the chassis 200. In addition, the number of the mounting seats 320 and the fixing assemblies 100 can also be two, four, five or the like, which is determined according to the size and installation condition of the actual compressor body 310, and is not limited here.

[0042] In addition, in order to reduce the vibration and tremor in the operation process of the compressor 300, so as to protect the compressor 300 from damage and prolong the service life of the compressor 300, the mounting seat 320 in the embodiment comprises a seat body and a buffer component, and the buffer component is arranged between the seat body and the chassis 200. The buffer component can be a spring, a shock absorber or the like, which is not limited here.

[0043] The fixing assembly 100 will be described in detail below.

[0044] Please refer to Figure 2 and Figure 3The fixing assembly 100 in the embodiment comprises a first connecting piece 110, a second connecting piece 120 and an adjusting piece 130. The first connecting piece 110 is provided with a first mounting hole 111 and is used for connecting with the bottom plate 200. The second connecting piece 120 is provided with an adjusting hole 1221 extending along the Z direction. The adjusting piece 130 is arranged in the adjusting hole 1221 and the first mounting hole 111 to connect the first connecting piece 110 and the second connecting piece 120. The adjusting piece 130 is movable along the extending direction of the adjusting hole 1221. The end of the second connecting piece 120 away from the first connecting piece 110 is used for detachably connecting with the compressor 300. The Z direction refers to the height direction of the compressor 300. That is, the adjusting piece 130 is movable up and down along the Z direction in the adjusting hole 1221. By changing the position of the adjusting piece 130 in the adjusting hole 1221, the height of the first connecting piece 110 and the second connecting piece 120 after being connected can be changed. Since the bottom plate 200 and the compressor 300 are connected through the first connecting piece 110 and the second connecting piece 120, the height of the first connecting piece 110 and the second connecting piece 120 after being connected determines the assembly height between the bottom plate 200 and the compressor 300. The fixing assembly 100 can be used to adjust the assembly height between the bottom plate 200 of different thicknesses and the compressor 300 of different types, and it is not necessary to design connecting structures of different heights for the bottom plate 200 of different thicknesses and the compressor 300 of different types.

[0045] By changing the position of the adjusting piece 130 in the adjusting hole 1221, the connecting position of the second connecting piece 120 and the first connecting piece 110 can be adjusted, so that the first connecting piece 110 and the second connecting piece 120 can meet the installation requirements of the bottom plate 200 of different thicknesses and the compressor 300 of different types, and the assembly height of the two can meet the preset requirements. Moreover, the fixing assembly 100 can be used with the same bolt or other threaded fasteners to adapt to the bottom plate 200 of different thicknesses, so that the assembly gap of the rubber feet of the compressor 300 can meet the installation requirements, and the fixing assembly 100 has universality.

[0046] Figure 4 For the schematic view of the second connecting piece 120 provided in the embodiment of the utility model, please refer to Figure 4 , and combine Figure 2 and Figure 3The second connecting piece 120 in the embodiment comprises a connecting part 121 and an adjusting part 122, the connecting part 121 and the adjusting part 122 are connected at an angle, the connecting part 121 is used for detachable connection with the compressor 300; the adjusting part 122 is provided with an adjusting hole 1221. First, the first connecting piece 110 is fixed on the chassis 200, then the second connecting piece 120 is matched with the compressor 300. Then the adjusting piece 130 is arranged in the adjusting hole 1221 and the first mounting hole 111, and the second connecting piece 120 is moved to change the position of the adjusting piece 130 in the adjusting hole 1221, so as to change the assembly height of the first connecting piece 110 and the second connecting piece 120. After the position of the second connecting piece 120 is fixed, the compressor 300 and the second connecting piece 120 are connected, and the assembly is completed.

[0047] The first mounting hole 111 in the embodiment is a circular hole. In order to improve the connection height adjusting range of the first connecting piece 110 and the second connecting piece 120, the first mounting hole 111 in the embodiment can also be designed as a strip-shaped hole extending along the Z direction. The adjusting piece 130 can move along the extension direction of the adjusting hole 1221, and also can move along the extension direction of the first mounting hole 111.

[0048] The second connecting piece 120 in the embodiment is in the shape of "L", that is, the connecting part 121 and the adjusting part 122 are connected at a right angle. The connecting part 121 and the adjusting part 122 are connected at a right angle, which can not only facilitate the connection of the compressor 300 and the chassis 200, but also save the installation space. Of course, the connecting part 121 and the adjusting part 122 can also be connected at an acute angle or an obtuse angle, which is not limited here.

[0049] In addition, in order to enhance the overall structural strength of the first connecting piece 110 and the second connecting piece 120, reinforcing ribs can be arranged on the first connecting piece 110 and / or the second connecting piece 120.

[0050] Please continue to refer to Figure 4 , in combination with Figure 2 and Figure 3 The connecting part 121 in the embodiment comprises a first connecting part 1211 and a second connecting part 1212, the first connecting part 1211 and the second connecting part 1212 are connected, and the second connecting part 1212 is connected with the adjusting part 122 at an angle away from one end of the first connecting part 1211; the thickness of the first connecting part 1211 is less than the thickness of the second connecting part 1212; the first connecting part 1211 is used for detachable connection with the compressor 300. In order to facilitate the connection between the connecting part 121 and the mounting seat 320 of the compressor 300, and facilitate the setting of the installation gap 400, the thickness of the first connecting part 1211 is less than the thickness of the second connecting part 1212. And the first connecting part 1211 in the embodiment is provided with a groove away from one side of the mounting seat 320, and the groove is used for assembling threaded fasteners such as bolts.

[0051] The first connecting part 121 is detachably connected with the compressor 300. Specifically, the first connecting part 121 is connected with the compressor 300 through a threaded fastener in the embodiment. The threaded fastener is a bolt, a screw or the like. Specifically, the first connecting part 121 is provided with a second mounting hole 12111 for passing the threaded fastener to achieve the detachable connection between the first connecting part 121 and the compressor 300. Of course, the first connecting part 121 can be detachably connected with the mounting seat 320 of the compressor 300 in a snap connection or plug-in connection, which is not limited herein. For example, the mounting seat 320 is provided with a mounting column, the first connecting part 121 is sleeved on the mounting column, the mounting column is provided with a clamping groove, and the first connecting part 121 is provided with a clamping structure matched with the clamping groove to achieve the clamping connection between the first connecting part 121 and the mounting column. Of course, the clamping structure can also be provided on the mounting column, and the first connecting part 121 is provided with a clamping groove matched with the clamping structure.

[0052] In order to facilitate adjustment and ensure the stability of the connection between the first connecting part 110 and the second connecting part 120, the number of the adjusting holes 1221 and the first mounting holes 111 in the embodiment is multiple. The multiple adjusting holes 1221 are arranged along the X direction, and the multiple adjusting holes 1221 are arranged in one-to-one correspondence with the multiple first mounting holes 111. The X direction is perpendicular to the Z direction. In the embodiment, the X direction is the width direction of the second connecting part 120. Specifically, the number of the adjusting holes 1221 and the first mounting holes 111 in the embodiment is two. Of course, the number of the adjusting holes 1221 and the first mounting holes 111 can also be three, four or the like, which is not limited herein.

[0053] Figure 5 For the schematic view of the first connecting part 110 provided in the embodiment of the utility model, please refer to Figure 5 , and combine Figure 2 and Figure 3 , the first connecting part 110 in the embodiment is detachably connected with the chassis 200. Specifically, the first connecting part 110 is connected with the chassis 200 through a threaded fastener. The threaded fastener is a bolt or a screw or the like. Of course, the first connecting part 110 can also be detachably connected with the chassis 200 in a snap connection, which is not limited herein. In addition, the first connecting part 110 can also be fixedly connected with the chassis 200 in welding or riveting. The connection mode between the first connecting part 110 and the chassis 200 is determined according to the specific application scene, which is not limited herein.

[0054] The adjusting part 130 in the embodiment is a screw rod and a nut. Of course, the adjusting part 130 can also be replaced by a clamp or the like structure, which is not limited herein.

[0055] According to the fixing assembly 100 provided by the embodiment, the assembling process is as follows:

[0056] First, the first connecting piece 110 is fixed to the chassis 200, and the second connecting piece 120 is matched with the compressor 300. Then, the adjusting piece 130 is arranged in the adjusting hole 1221 and the first mounting hole 111, and the second connecting piece 120 is moved to change the position of the adjusting piece 130 in the adjusting hole 1221, so as to change the assembling height of the first connecting piece 110 and the second connecting piece 120. After the position of the second connecting piece 120 is fixed, the compressor 300 and the second connecting piece 120 are connected, and the assembling is completed.

[0057] In summary, the fixing assembly 100 includes the first connecting piece 110, the second connecting piece 120 and the adjusting piece 130. The first connecting piece 110 is provided with the first mounting hole 111, and is used for connecting the chassis 200. The second connecting piece 120 is provided with the adjusting hole 1221, and the adjusting hole 1221 extends along the Z direction. The adjusting piece 130 is arranged in the adjusting hole 1221 and the first mounting hole 111, and is used for connecting the first connecting piece 110 and the second connecting piece 120. The adjusting piece 130 can move along the extension direction of the adjusting hole 1221. The end of the second connecting piece 120 away from the first connecting piece 110 is used for detachably connecting the compressor 300. By changing the position of the adjusting piece 130 in the adjusting hole 1221, the connecting position of the second connecting piece 120 and the first connecting piece 110 can be adjusted, so as to ensure that the first connecting piece 110 and the second connecting piece 120 can meet the installation requirements of the chassis 200 with different thicknesses and the compressors 300 with different types, and the assembling height of the two meets the preset requirements. Moreover, the fixing assembly 100 can be matched with the chassis 200 with different thicknesses by using the same bolt and other threaded fasteners, so as to ensure that the assembling gap of the glue feet of the compressor 300 can meet the installation requirements, and the fixing assembly 100 has universality.

[0058] The above merely provides a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any changes or replacements that can be easily thought of by those skilled in the art within the technical range disclosed by the present application should be covered in the protection scope of the present application.

Claims

1. A fastening assembly comprising: include: A first connector (110) is provided with a first mounting hole (111) and is used to connect to the chassis (200). The second connector (120) has an adjustment hole (1221) extending along the Z direction; An adjusting member (130) is provided through the adjusting hole (1221) and the first mounting hole (111) to connect the first connecting member (110) and the second connecting member (120); the adjusting member (130) is movable along the extending direction of the adjusting hole (1221); The end of the second connector (120) away from the first connector (110) is used for detachable connection with the compressor (300).

2. The fixture assembly of claim 1, wherein, The second connector (120) includes a connecting part (121) and an adjusting part (122), the connecting part (121) and the adjusting part (122) are connected at an angle, the connecting part (121) is used for detachable connection with the compressor (300), and the adjusting part (122) has the adjusting hole (1221).

3. The fixture assembly of claim 2, wherein, The connecting part (121) includes a first connecting part (1211) and a second connecting part (1212), the first connecting part (1211) and the second connecting part (1212) are connected, and the end of the second connecting part (1212) away from the first connecting part (1211) is connected to the adjusting part (122) at an angle; the thickness of the first connecting part (1211) is less than the thickness of the second connecting part (1212); the first connecting part (1211) is used for detachable connection with the compressor (300).

4. The fixture assembly of claim 3, wherein, The first connecting part (1211) has a second mounting hole (12111) for threaded fasteners to be inserted, so as to realize the first connecting part (1211) and the compressor (300) detachably connected.

5. The fixture assembly of any one of claims 1-4, wherein, The number of adjustment holes (1221) and the number of first mounting holes (111) are both multiple. The multiple adjustment holes (1221) are spaced apart along the X direction, and the multiple adjustment holes (1221) correspond one-to-one with the multiple first mounting holes (111); the X direction is perpendicular to the Z direction.

6. The fixture assembly of any one of claims 1-4, wherein, The second connector (120) is L-shaped.

7. The fixture assembly of any one of claims 1-4, wherein, The first connector (110) is detachably connected to the chassis (200).

8. The fixture assembly of claim 7, wherein, The first connector (110) is connected to the chassis (200) by threaded fasteners.

9. A compressor system characterized by, The device includes a chassis (200), a compressor (300), and a fixing assembly (100) as described in any one of claims 1-7, wherein the chassis (200) is fixedly connected to the first connecting member (110), and the end of the second connecting member (120) away from the first connecting member (110) is detachably connected to the compressor (300); and there is an installation gap (400) between the second connecting member (120) and the compressor (300).

10. The compressor system of claim 9, wherein, The compressor (300) comprises a compressor body (310) and a plurality of mounting seats (320), the plurality of mounting seats (320) are arranged on the bottom plate (200), and the plurality of mounting seats (320) are connected with the compressor body (310); the plurality of mounting seats (320) are arranged at intervals; The number of the fixing assemblies (100) is multiple, and the plurality of fixing assemblies (100) correspond to the plurality of mounting seats (320) one by one; for each fixing assembly (100), the second connecting piece (120) is detachably connected with the corresponding mounting seat (320).

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