Stator and rotor combination structure of air compressor for hydrogen fuel cell

Abstract

The invention relates to an air compressor stator and rotor combination structure for a hydrogen fuel cell, which comprises a positioning mechanism, a bottom plate, a speed chain, a tray, a support, a pressing mechanism, a tray jacking mechanism, a proximity switch, a shell and a rotor, the speed chain is fixed at the upper end of the bottom plate through a plurality of supports, and the tray is conveyed between stations by the speed chain; the tray jacking mechanism is fixed to the lower end of the bottom plate, the proximity switch is fixed to the speed multiplication chain, and after the proximity switch senses that the tray is in place, the tray jacking mechanism jacks and positions the tray. The stator and rotor combination structure of the air compressor for the hydrogen fuel cell has double positioning of the shell and the rotor, positioning is more accurate, a servo motor and a module are adopted for mounting and pressing, and the synchronization precision is higher during descending and pressing. Ejector pin type pressing is adopted, high-precision coaxiality is achieved, a positioning mechanism is convenient to disassemble, model changing is easy, operation is easy, and efficiency is high; and the shell is positioned in a floating manner and is compatible with slight deformation of products.

Description

Technical Field

[0001] The present invention relates to the field of hydrogen fuel cells, in particular to the field of casing and rotor positioning, and specifically refers to a stator and rotor assembly structure of an air compressor for a hydrogen fuel cell. Background Art

[0002] A hydrogen fuel cell system is a device that directly converts the chemical energy stored in fuel and oxidant into electrical energy through electrochemical means. In a hydrogen fuel cell system, an air compressor is required to continuously transport air to accelerate the air supply, thereby improving fuel utilization.

[0003] At present, the demand for hydrogen fuel cell systems is increasing, and the demand for air compressors is also increasing. The demand for air compressor production lines is increasing, and the installation of the stator and rotor, the core process of air compressors, is also an important link. The market currently uses manual or cylinder linkage installation, which has low installation efficiency and low installation accuracy. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a stator and rotor assembly structure for an air compressor for a hydrogen fuel cell that meets the requirements of high precision, accurate positioning, and a relatively wide range of applications.

[0005] In order to achieve the above-mentioned object, the stator and rotor assembly structure of the air compressor for hydrogen fuel cells of the present invention is as follows:

[0006] The stator and rotor assembly structure of the air compressor for hydrogen fuel cells has the following main features: the structure includes a positioning mechanism, a base plate, a speed chain, a tray, a support, a pressing mechanism, a tray lifting mechanism, a proximity switch, a shell and a rotor; the speed chain is fixed to the upper end of the base plate by a plurality of brackets; the speed chain transports the tray between workstations; the tray lifting mechanism is fixed to the lower end of the base plate; the proximity switch is fixed to the speed chain; after the proximity switch senses that the tray is in place, the tray lifting mechanism lifts and positions the tray; the positioning mechanism is fixed to the lower end of the base plate; the pressing mechanism is fixed to the base plate by a support; the positioning mechanism moves downward synchronously with the pressing mechanism; the rotor is placed on the positioning mechanism; the positioning mechanism performs dual positioning on the shell and the rotor respectively; the pressing mechanism presses the rotor and descends synchronously with the positioning mechanism until the rotor is installed; after the rotor is installed, the pressing mechanism automatically returns to its original position.

[0007] Preferably, the positioning mechanism includes a lower end module, a small support, a guide sleeve, a flange, a shell positioning flange, a connecting seat, a first connecting plate, a positioning rod, an auxiliary cylinder and a second connecting plate. The small support is fixed on the bottom plate, the lower end module is fixed to the small support by pins and bolts, the positioning rod is fixed to the lower end module by the first connecting plate and the connecting seat, the shell positioning flange, flange and guide sleeve are connected by bolts and fit on the positioning rod, the positioning rod and the shell positioning flange are concentric, the auxiliary cylinder is fixed to the plate inside the pallet lifting mechanism by the second connecting plate, and the auxiliary cylinder lifts and positions the shell.

[0008] Preferably, the positioning rod comprises two sections, an upper section and an lower section, which are connected via threads, a pin hole and a pin shaft.

[0009] Preferably, the pressing mechanism includes an auxiliary plate, an upper support, an upper module, a module connecting plate, a Y-direction mounting plate, an adjustment mechanism and an X-direction mounting plate, the positioning column is fixed on the X-direction mounting plate, the X-direction mounting plate and the adjustment mechanism are fixed on the Y-direction mounting plate, the Y-direction mounting plate and the adjustment mechanism are fixed on the module connecting plate, the adjustment structure is installed on the upper module through the module connecting plate, and is fixed on the support through the auxiliary plate and the upper support.

[0010] Preferably, the X-direction mounting plate and adjustment mechanism are used to adjust the left and right direction of the positioning column, and the Y-direction mounting plate and adjustment mechanism are used to adjust the front and back direction of the positioning column, and the pressure rod is fine-tuned to make the pressure rod coaxial with the positioning rod.

[0011] Preferably, the pallet lifting mechanism includes a positioning plate, a linear bearing, a cylinder assembly, a guide rod and a limit ring. Two sets of cylinder assemblies and four linear bearings are installed on the plate. The guide rod is fitted with the linear bearing, a limit ring is installed at the lower end, and the upper end is fixed to the positioning plate. The upper end of the cylinder assembly is connected to the positioning plate, and the plate is fixed to the bottom plate. A positioning pin is installed on the positioning plate, and a magnetic switch is installed on the cylinder assembly. The extension and retraction of the cylinder assembly causes the positioning plate to move up and down.

[0012] The stator-rotor assembly structure of the air compressor for hydrogen fuel cells of the present invention is adopted, which has dual positioning of the housing and the rotor, and the positioning is more accurate. The installation and pressing adopts a servo motor and a module, and the synchronization accuracy is higher when descending and pressing. It adopts a pin-type pressing and has high-precision coaxiality. The positioning mechanism is easy to disassemble, the replacement is simple, the operation is simple, and the efficiency is high. The housing positioning adopts a floating type compatible product with slight deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the stator and rotor assembly structure of the air compressor for the hydrogen fuel cell of the present invention.

[0014] Figure 2 It is a front view of the stator and rotor assembly structure of the air compressor for hydrogen fuel cells of the present invention.

[0015] Figure 3 It is a side view of the stator and rotor assembly structure of the air compressor for hydrogen fuel cells of the present invention.

[0016] Figure 4 This is a detailed diagram of the positioning mechanism components of the stator and rotor assembly structure of the air compressor for the hydrogen fuel cell of the present invention.

[0017] Figure 5 This is a detailed diagram of the pressing mechanism components of the stator and rotor assembly structure of the air compressor for the hydrogen fuel cell of the present invention.

[0018] Figure 6 This is a detailed diagram of the tray lifting mechanism of the stator and rotor assembly structure of the air compressor for the hydrogen fuel cell of the present invention.

[0019] Reference numerals:

[0020] 1 Positioning mechanism

[0021] 2 Bottom plate

[0022] 3x speed chain

[0023] 4 Pallets

[0024] 5 Support

[0025] 6 Pressing mechanism

[0026] 7 Pallet lifting mechanism

[0027] 8 Proximity switch

[0028] 9 RFID

[0029] 10 Housing

[0030] 11 Rotor

[0031] 12 Bearing seat

[0032] 13 Lower module

[0033] 14 Small support

[0034] 15 boards

[0035] 16 Guide sleeve

[0036] 17 Flange

[0037] 18 Housing locating flange

[0038] 19 Connecting seat

[0039] 20 first connecting plate

[0040] 21 Positioning rod

[0041] 22 Auxiliary cylinder

[0042] 23 Second connecting plate

[0043] 24 auxiliary board

[0044] 25 Pressure rod

[0045] 26 upper support

[0046] 27 Upper module

[0047] 28 module connection board

[0048] 29Y direction mounting plate

[0049] 30 Adjustment mechanism

[0050] 31X direction mounting plate

[0051] 32 positioning pins

[0052] 33 Positioning plate

[0053] 34 Linear bearings

[0054] 35 cylinder assembly

[0055] 36 guide rod

[0056] 37 Limiting ring DETAILED DESCRIPTION

[0057] In order to more clearly describe the technical content of the present invention, further description is given below in conjunction with specific embodiments.

[0058] The stator and rotor assembly structure of the air compressor for hydrogen fuel cells of the present invention includes a positioning mechanism 1, a base plate 2, a speed chain 3, a tray 4, a support 5, a pressing mechanism 6, a tray lifting mechanism 7, a proximity switch 8, a shell 10 and a rotor 11. The speed chain 3 is fixed to the upper end of the base plate 2 by a plurality of brackets. The speed chain 3 transports the tray 4 between the workstations. The tray lifting mechanism 7 is fixed to the lower end of the base plate 2. The proximity switch 8 is fixed to the speed chain 3. After the proximity switch 8 senses that the tray 4 is in place, the tray The tray lifting mechanism 7 lifts and positions the tray 4; the positioning mechanism 1 is fixed at the lower end of the base plate 2, and the pressing mechanism 6 is fixed to the base plate 2 through the support 5. The positioning mechanism 1 and the pressing mechanism 6 move downward synchronously, and the rotor 11 is placed on the positioning mechanism 1. The positioning mechanism 1 performs double positioning on the shell 10 and the rotor 11 respectively. The pressing mechanism 6 presses the rotor 11 and descends synchronously with the positioning mechanism 1 until the rotor is installed. After the rotor 11 is installed, the pressing mechanism 6 automatically returns to its original position.

[0059] As a preferred embodiment of the present invention, the positioning mechanism 1 includes a lower end module 13, a small support 14, a guide sleeve 16, a flange 17, a shell positioning flange 18, a connecting seat 19, a first connecting plate 20, a positioning rod 21, an auxiliary cylinder 22 and a second connecting plate 23. The small support 14 is fixed on the bottom plate 2, the lower end module 13 is fixed to the small support 14 by pins and bolts, the positioning rod 21 is fixed to the lower end module 13 by the first connecting plate 20 and the connecting seat 19, the shell positioning flange 18, the flange 17 and the guide sleeve 16 are connected by bolts and are fitted on the positioning rod 21, the positioning rod 21 and the shell positioning flange 18 are concentric, the auxiliary cylinder 22 is fixed to the plate 15 in the tray lifting mechanism 17 by the second connecting plate 23, and the auxiliary cylinder 22 lifts and positions the shell 10.

[0060] As a preferred embodiment of the present invention, the positioning rod 21 includes two sections, an upper section and an lower section, which are connected by threads, a pin hole and a pin shaft.

[0061] As a preferred embodiment of the present invention, the pressing mechanism 6 includes an auxiliary plate 24, an upper support 26, an upper end module 27, a module connecting plate 28, a Y-direction mounting plate 29, an adjustment mechanism 30 and an X-direction mounting plate 31, the positioning column 21 is fixed on the X-direction mounting plate 31, the X-direction mounting plate 31 and the adjustment mechanism 30 are fixed on the Y-direction mounting plate 29, the Y-direction mounting plate 29 and the adjustment mechanism 30 are fixed on the module connecting plate 28, and the adjustment structure 30 is installed on the upper end module 27 through the module connecting plate 28, and is fixed on the support 6 through the auxiliary plate 24 and the upper support 26.

[0062] As a preferred embodiment of the present invention, the X-direction mounting plate 31 and the adjustment mechanism 30 are used to adjust the left and right direction of the positioning column 25, and the Y-direction mounting plate 29 and the adjustment mechanism 30 are used to adjust the front and back direction of the positioning column 25, and to fine-tune the pressure rod 25 to make the pressure rod 25 coaxial with the positioning rod 21.

[0063] As a preferred embodiment of the present invention, the pallet lifting mechanism 7 includes a positioning plate 33, a linear bearing 34, a cylinder assembly 35, a guide rod 36 and a limit ring 37. Two sets of cylinder assemblies 35 and four linear bearings 34 are installed on the plate 15. The guide rod 36 is fitted with the linear bearing 34, and a limit ring 37 is installed at the lower end, and the upper end is fixed to the positioning plate 33. The upper end of the cylinder assembly 35 is connected to the positioning plate 33, and the plate 15 is fixed on the base plate 2. The positioning plate 33 is installed with a positioning pin 32, and a magnetic switch is installed on the cylinder assembly 35. The extension and retraction of the cylinder assembly causes the positioning plate 33 to move up and down.

[0064] In the specific implementation of the present invention, in view of the above-mentioned deficiencies in the prior art, the mechanism of the present invention adopts a dual positioning method of housing positioning combined with rotor positioning, the rotor is installed by ejector type, and the mechanisms at both ends are moved by servo motor + module, thereby ensuring positioning accuracy and installation efficiency. At the same time, the positioning mechanism is convenient for disassembly and replacement, and can be compatible with more products.

[0065] When the pallet 4 reaches this position (the air compressor housing has been installed) through the speed chain 3, the proximity switch 8 senses that it has reached the specified position and feeds back a signal to the PLC system, causing the lifting mechanism to lift and position the pallet 4; the lower rotor positioning mechanism rises and automatically rises to the assembly height; the rotor 11 is placed in the lower rotor positioning, and the bearing seat is fitted on the rotor 11 at the same time, and the upper pressing mechanism 6 automatically descends and fits the rotor 11 to form a pin-type mechanism; the positioning mechanism 1 and the pressing mechanism 6 move downward synchronously to install the rotor 11 in place; after installation, the upper and lower mechanisms automatically return to their original positions, the installation is completed, and the product can be taken away.

[0066] The device of the present invention comprises a volute and a rotor positioning mechanism, a rotor pressing mechanism, a servo module, a multiple speed chain and a lifting mechanism, etc.

[0067] The mechanisms of the present invention are connected by pins and bolts, and the operation is fully controlled by the PLC system. The double-speed chain 3 is fixed to the upper end of the bottom plate 2 through a number of brackets; the pallet 4 is transported by the double-speed chain 3, which transports the pallet 4 from the upper station to the current station and the lower station; the proximity switch 8 is fixed on the double-speed chain 3 to sense whether the pallet 4 has reached this station, and the stop cylinder on the double-speed chain performs a stop action; the pallet lifting mechanism 7 lifts and positions the pallet 4 after the proximity switch 8 senses that the pallet 4 is in place, and the pallet lifting mechanism 7 is fixed to the lower end of the bottom plate 2; the RFID 9 is used to transmit the information of the newly installed parts of the pallet 4 to the MES system for integrated processing.

[0068] The positioning mechanism 1 is fixed at the lower end of the bottom plate 2, and performs dual positioning on the housing 10 and the rotor 11 respectively; the pressing mechanism 6 is fixed on the bottom plate 2 through the support 5, and presses the rotor 11 placed on the positioning mechanism 1, and is synchronously lowered with the positioning mechanism 1 until the rotor is installed in place, and then automatically returns to the original position; the bearing seat 12 is lowered together with the rotor 11, and is pressed and installed at the same time. Note: The concentricity requirements of the positioning mechanism 1 and the pressing mechanism 6 are very high. In addition to relying on the positioning pin for positioning, an adjustable mechanism is also made on the pressing mechanism 6.

[0069] The small support 14 of the positioning mechanism 1 is fixed on the bottom plate 2, and the lower end module 13 is fixed on the small support 14 by means of pins and bolts; the positioning rod 21 is fixed on the lower end module 13 by means of the connecting plate 20 and the connecting seat 19, and the positioning rod 21 is made into two sections, and the upper and lower parts are connected by means of threads and pin holes / pin shafts to ensure its positioning and locking; the shell positioning flange 18, the flange plate 17 and the guide sleeve 16 are connected by means of sleeves and bolts, and are sleeved on the positioning rod 21 to ensure that the positioning rod 21 and the shell positioning flange 18 are concentric, matching the concentricity requirements of the shell 10 and the rotor 11 in actual application; the auxiliary cylinder 22 is fixed on the plate 15 in the tray lifting mechanism 17 by means of the connecting plate 23, and the auxiliary cylinder 22 first lifts and positions the shell 10, and the double cylinder lifting and positioning has a certain floating effect, making positioning easier and better compatible with the positioning when the shell 10 is slightly deformed during processing. The double positioning method is the highlight of the present invention, and it is easy to use and has significant effects.

[0070] The pressing rod 25 in the pressing mechanism 6 is composed of two parts, which are processed as one piece after being connected. Figure 5It can be seen that there is a vertical connection seam in the middle of the pressure rod 25, and the left and right sides of the pressure rod 25 are connected together to form a whole. The two parts are precisely fitted (similar to the matching of a pin and a pin hole), and the tail is connected by a threaded connection method that is smaller than the shaft diameter of the positioning part, which ensures its positioning accuracy and can also be quickly replaced; the pressure rod 25 is fixed on the X-direction mounting plate 31, and the X-direction mounting plate 31 and the adjustment mechanism 30 are fixed on the Y-direction mounting plate 29; the Y-direction mounting plate 29 and the adjustment mechanism 30 are fixed on the module connecting plate 28; the X-direction mounting plate 31 and the adjustment mechanism 30 can be By adjusting the left and right direction of the positioning column 25, the Y-direction mounting plate 29 and the adjustment mechanism 30 can adjust the front and back direction of the positioning column 25, so as to achieve fine-tuning of the pressure rod 25 to make it coaxial with the rotor positioning rod 21; the overall adjustment structure 30 is installed on the upper end module 27 through the module connecting plate 28, and then fixed on the support 6 through the auxiliary plate 24 and the upper support 26; the pressure rod 25 can be accurately moved up and down; the reason for pressing is that the rotor 11 is magnetized, and when it is installed in the housing 10, in addition to the positioning of the lower end, the upper end still needs to press the rotor 11, otherwise it cannot be installed.

[0071] Pallet lifting mechanism 7: Two sets of cylinder assemblies 35 and four linear bearings 34 are installed on the plate 15, the guide rod 36 is fitted with the linear bearing 34, the lower end is installed with a limit ring 37, and the upper end is fixed on the positioning plate 33; the upper end of the cylinder assembly is connected to the positioning plate 33, and the plate 15 is fixed on the bottom plate 2. The extension and retraction of the cylinder assembly 35 can make the positioning plate 33 move up and down. The cylinder assembly 35 is equipped with a magnetic switch to sense its up and down position; the positioning pin 32 is installed on the positioning plate 33 to enable the pallet lifting mechanism 7 to be better positioned with the pallet 4 after being lifted.

[0072] The specific implementation scheme of this embodiment can refer to the relevant description in the above embodiment, which will not be repeated here.

[0073] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0074] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" refers to at least two.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0076] The stator-rotor assembly structure of the air compressor for hydrogen fuel cells of the present invention is adopted, which has dual positioning of the housing and the rotor, and the positioning is more accurate. The installation and pressing adopts a servo motor and a module, and the synchronization accuracy is higher when descending and pressing. It adopts a pin-type pressing and has high-precision coaxiality. The positioning mechanism is easy to disassemble, the replacement is simple, the operation is simple, and the efficiency is high. The housing positioning adopts a floating type compatible product with slight deformation.

[0077] In this specification, the present invention has been described with reference to specific embodiments thereof. However, it is apparent that various modifications and variations may be made without departing from the spirit and scope of the present invention. Therefore, the specification and drawings should be regarded as illustrative rather than restrictive.

Claims

1. A stator and rotor assembly structure of an air compressor for a hydrogen fuel cell, characterized in that: The structure includes a positioning mechanism, a base plate, a double-speed chain, a pallet, a support, a pressing mechanism, a pallet lifting mechanism, a proximity switch, a shell and a rotor. The double-speed chain is fixed to the upper end of the base plate by a number of brackets. The double-speed chain transports the pallet between workstations. The pallet lifting mechanism is fixed to the lower end of the base plate. The proximity switch is fixed on the double-speed chain. After the proximity switch senses that the pallet is in place, the pallet lifting mechanism lifts and positions the pallet. The positioning mechanism is fixed to the lower end of the base plate. The pressing mechanism is fixed to the base plate by a support. The positioning mechanism moves downward synchronously with the pressing mechanism. The rotor is placed on the positioning mechanism. The positioning mechanism performs double positioning on the shell and the rotor respectively. The pressing mechanism presses the rotor and descends synchronously with the positioning mechanism until the rotor is installed. After the rotor is installed, the pressing mechanism automatically returns to its original position.

2. The stator and rotor assembly structure of an air compressor for a hydrogen fuel cell according to claim 1, characterized in that: The positioning mechanism includes a lower end module, a small support, a guide sleeve, a flange, a shell positioning flange, a connecting seat, a first connecting plate, a positioning rod, an auxiliary cylinder and a second connecting plate. The small support is fixed on the bottom plate. The lower end module is fixed to the small support by pins and bolts. The positioning rod is fixed to the lower end module by the first connecting plate and the connecting seat. The shell positioning flange, flange and guide sleeve are connected by bolts and are fitted on the positioning rod. The positioning rod and the shell positioning flange are concentric. The auxiliary cylinder is fixed to the plate inside the pallet lifting mechanism by the second connecting plate. The auxiliary cylinder lifts and positions the shell.

3. The stator and rotor assembly structure of an air compressor for a hydrogen fuel cell according to claim 2, characterized in that: The positioning rod comprises two sections, an upper section and an lower section, which are connected via threads, a pin hole and a pin shaft.

4. The stator and rotor assembly structure of an air compressor for a hydrogen fuel cell according to claim 1, characterized in that: The pressing mechanism includes an auxiliary plate, an upper support, an upper module, a module connecting plate, a Y-direction mounting plate, an adjustment mechanism and an X-direction mounting plate. The positioning column is fixed on the X-direction mounting plate, the X-direction mounting plate and the adjustment mechanism are fixed on the Y-direction mounting plate, the Y-direction mounting plate and the adjustment mechanism are fixed on the module connecting plate, and the adjustment structure is installed on the upper module through the module connecting plate and fixed on the support through the auxiliary plate and the upper support.

5. The stator and rotor assembly structure of an air compressor for a hydrogen fuel cell according to claim 1, characterized in that: The X-direction mounting plate and the adjustment mechanism are used to adjust the left and right direction of the positioning column, and the Y-direction mounting plate and the adjustment mechanism are used to adjust the front and back direction of the positioning column, and to fine-tune the pressure rod to make the pressure rod coaxial with the positioning rod.

6. The stator and rotor assembly structure of an air compressor for a hydrogen fuel cell according to claim 1, characterized in that: The pallet lifting mechanism includes a positioning plate, a linear bearing, a cylinder assembly, a guide rod and a limit ring. Two sets of cylinder assemblies and four linear bearings are installed on the plate. The guide rod is fitted with the linear bearing, a limit ring is installed at the lower end, and the upper end is fixed on the positioning plate. The upper end of the cylinder assembly is connected to the positioning plate, and the plate is fixed on the bottom plate. A positioning pin is installed on the positioning plate. A magnetic switch is installed on the cylinder assembly. The extension and retraction of the cylinder assembly causes the positioning plate to move up and down.

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