CN213711264U - Oil-free compressor and auxiliary pantograph lifting module comprising same - Google Patents
Oil-free compressor and auxiliary pantograph lifting module comprising same Download PDFInfo
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- CN213711264U CN213711264U CN202021955288.5U CN202021955288U CN213711264U CN 213711264 U CN213711264 U CN 213711264U CN 202021955288 U CN202021955288 U CN 202021955288U CN 213711264 U CN213711264 U CN 213711264U
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Abstract
Oil-free compressor and contain this oil-free compressor's supplementary lift bow module. Relates to the field of urban rail transit equipment. An oil-free compressor and an auxiliary pantograph-lifting module comprising the oil-free compressor are provided, wherein the oil-free compressor is lighter in weight, low in noise and relatively small in air displacement. The device comprises a driving motor 1, a box body 5, a crankshaft 3, a cylinder 6 and a piston assembly 10, wherein the driving motor 1 is connected with the box body 5, an output shaft of the driving motor 1 extends into the box body 5, the cylinder 6 is fixedly connected into the box body 5, the piston assembly 10 comprises a piston ring 7 which is in linkage with the output shaft of the driving motor 1, and the piston ring 7 is arranged in the cylinder 6; the output shaft of the driving motor 1 is also provided with a heat dissipation fan blade 2 used for blowing air to the air cylinder 6; the side wall of the box body 5 is provided with a plurality of heat dissipation air outlets 14 around the cylinder 6. The compressor works more stably, and the working temperature rising speed is reduced by 15%.
Description
Technical Field
The utility model relates to an urban rail transit equips the field, concretely relates to oil free compressor and supplementary bow module that rises.
Background
The subway plays a very important role in a modern logistics system as an important national infrastructure, a development artery of national economy and a popular vehicle. With the rapid development of social economy and the acceleration of urbanization process in China, the number of urban population is greatly increased, traffic jam can be seen in most cities in China, and the construction of subways plays a considerable role in improving urban traffic environment.
In the process of subway operation, an auxiliary pantograph lifting module is needed on all urban rail transit to provide clean and clean compressed air for a locomotive pantograph lifting system, a main short-circuiting device and other systems in advance so as to ensure stable and reliable operation of the urban rail transit, and the auxiliary pantograph lifting module is a powerful guarantee for reliable operation of the urban rail transit and is an indispensable component part on high-speed, heavy-load and high-power communication urban rail transit.
At present, the auxiliary pantograph lifting module used in domestic direct-current transmission urban rail transit generally adopts a traditional open structure, the fault frequency of the auxiliary pantograph lifting module is relatively high, large noise is generated when a unit operates, sometimes, the exhaust volume is large, the weight of the whole unit is large, and a light-weight compressor and a closed auxiliary pantograph lifting module are designed aiming at a system with small required exhaust volume.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to above problem, provided an oil free compressor that weight is lighter, small in noise, displacement are less relatively and contained this oil free compressor's supplementary bow module that rises.
The technical scheme of the utility model is that: the device comprises a driving motor 1, a box body 5, a crankshaft 3, a cylinder 6 and a piston assembly 10, wherein the driving motor 1 is connected with the box body 5, an output shaft of the driving motor 1 extends into the box body 5, the cylinder 6 is fixedly connected into the box body 5, the piston assembly 10 comprises a piston ring 7 which is in linkage with the output shaft of the driving motor 1, and the piston ring 7 is arranged in the cylinder 6;
the output shaft of the driving motor 1 is also provided with a heat dissipation fan blade 2 used for blowing air to the air cylinder 6; the side wall of the box body 5 is provided with a plurality of heat dissipation air outlets 14 around the cylinder 6.
The top port of the cylinder 6 is fixedly connected with a valve plate 8, and the heat dissipation air outlet 14 is formed in the joint of the valve plate 8 and the box body 5.
The plurality of heat dissipation air outlets 14 are uniformly distributed along the circumferential direction of the box body 5.
A plurality of radiating fins are arranged on the cylinder cover 9.
The piston ring 7 is a cup type piston ring.
The driving motor 1 is a rare earth permanent magnet direct current motor.
Comprises an oil-free compressor 17, a cooler 19, a fine filter 20 and a one-way valve 21 which are connected in sequence;
one end of the oil-free compressor 17, which is far away from the cooler 19, is connected with the air inlet filter 16, and a safety valve 18 is also arranged between the oil-free compressor 17 and the cooler 19; one end of the check valve 21, which is far away from the fine filter 20, is connected with an exhaust joint, and a pressure switch 22 is arranged between the check valve 21 and the exhaust joint.
The safety valve 18 is connected between the oil-free compressor 17 and the cooler 19 through a double-sleeve inner and outer thread three-way joint, and the pressure switch 22 is connected between the check valve 21 and the exhaust joint through an inner thread three-way joint.
The oil-free compressor 17, the cooler 19, the fine filter 20 and the check valve 21 are integrally arranged in the same shell.
The beneficial effects of the utility model reside in that: the four heat dissipation air outlets are designed at the periphery of the joint of the valve plate 8 and the box body 5, so that a heat dissipation channel is formed in the box body 5, a plurality of heat dissipation fins are arranged on the cylinder cover 9, cooling air generated by fan blades in the working process discharges heat generated by the cylinder 6 in the working process through the heat dissipation channel, and the heat dissipation air outlets on the cylinder cover 9 discharge the heat to realize quick heat dissipation, so that the quick heat conduction of the cylinder 6 is realized, the working temperature of the cylinder 6 is prevented from being too high, the matching tightness between the cylinder 6 and the piston assembly 10 is ensured, the compressor works more stably, and the rising speed of the working temperature is reduced by 15%; secondly, the radiating fins on the cylinder cover 9 are staggered, so that the contact area of the cylinder cover 9 and air is increased, and the radiating effect is improved; thirdly, the crankshaft 3 adopts an eccentric block which is directly sleeved on the crankshaft 3 to serve as a motor shaft, so that the axial size of the compressor can be greatly reduced, and the weight of the compressor can be controlled; fourthly, the cooler is of an aluminum plate-fin integral structure, air inlet and outlet pipes of the cooler are welded by aluminum pipes, the strength of the cooler is greatly increased, and the working reliability of the cooler is guaranteed; compared with the existing cooler, the cooler is more suitable for being used in a severe vibrating locomotive environment, so that the working reliability of the whole compressor unit is ensured; the shell adopts a closed structure, compared with an open structure, the closed structure can effectively reduce the noise caused by the operation of the compressor, and the closed structure is also favorable for isolating external moisture and reducing the faults of the module caused by water inlet because the pantograph lifting module is designed for hoisting outside a subway; and sixthly, the weight of the compressor is reduced due to the reduction of the displacement of the pantograph lifting module, and the overall weight of the module is greatly reduced compared with other compressor units due to the simplification of the internal structure of the pantograph lifting module, so that the weight of a finished product is maintained in a range of 28kg +/-3%.
Drawings
Figure 1 is a schematic view of the structure of an oil-free compressor,
FIG. 2 is a schematic view of the connection between the box body and the cylinder mounting ring seat,
figure 3 is a schematic view of the structure of the box,
figure 4 is a schematic view of the structure of the cylinder head,
figure 5 is a schematic structural diagram of an auxiliary pantograph lifting module,
FIG. 6 is a schematic view of a cooler configuration;
in the figure, 1 is a driving motor, 2 is a heat dissipation fan blade, 3 is a crankshaft, 4 is a connecting rod, 5 is a box body, 6 is a cylinder, 7 is a piston ring, 8 is a valve plate, 9 is a valve cover, 10 is a piston assembly, 12 is a cylinder mounting ring seat, 13 is a rib, and 14 is a heat dissipation air outlet;
16 is an intake filter, 17 is an oil-free compressor, 18 is a safety valve, 19 is a cooler, 20 is a fine filter, 21 is a check valve, 22 is a pressure switch, 24 is an intake pipe, and 25 is an outlet pipe.
Detailed Description
In order to clearly explain the technical features of the present patent, the following detailed description of the present patent is provided in conjunction with the accompanying drawings.
As shown in fig. 1-6, the invention comprises a driving motor 1, a box 5, a crankshaft 3, a cylinder 6 and a piston assembly 10, wherein the driving motor 1 is connected with the box 5, an output shaft of the driving motor 1 extends into the box 5, the cylinder 6 is fixedly connected in the box 5, the piston assembly 10 comprises a piston ring 7 which keeps linkage with the output shaft of the driving motor 1, and the piston ring 7 is arranged in the cylinder 6;
the output shaft of the driving motor 1 is also provided with a heat dissipation fan blade 2 used for blowing air to the air cylinder 6; the side wall of the box body 5 is provided with a plurality of heat dissipation air outlets 14 around the cylinder 6.
The piston assembly 10 further comprises a crankshaft 3 and a connecting rod 4, the crankshaft 3 is sleeved with an output shaft of the driving motor 1 and fixedly connected with the output shaft, one end of the connecting rod 4 is connected with the piston ring 7, and the other end of the connecting rod is connected with the crankshaft 3. So that the piston ring 7 is driven to reciprocate linearly in the cylinder 6 after the crankshaft 3 starts rotating.
The top port of the cylinder 6 is fixedly connected with a valve plate 8, and the heat dissipation air outlet 14 is formed in the joint of the valve plate 8 and the box body 5.
A valve cover 9 is fixedly connected to the valve plate 8, an air inlet cavity and an air outlet cavity are formed between the valve cover 9 and the valve plate 8, and an air inlet valve and an air outlet valve are further arranged on the valve plate 8;
the air inlet cavity is communicated with the inside of the air cylinder 6 through an air inlet valve, and the air outlet cavity is communicated with the inside of the air cylinder 6 through an air outlet valve. Thus, when the piston ring moves downwards, the air is inflated into the cylinder from the air inlet cavity, and when the piston ring moves upwards, the air in the cylinder is pressed into the air outlet cavity.
The plurality of heat dissipation air outlets 14 are uniformly distributed along the circumferential direction of the box body 5.
A plurality of radiating fins are arranged on the cylinder cover 9. Preferably a plurality of radiating fins arranged in a staggered manner.
The piston ring 7 is a cup type piston ring.
The driving motor 1 is a rare earth permanent magnet direct current motor.
The middle driving motor 1 is a rare earth permanent magnet direct current motor, and the shell of the rare earth permanent magnet direct current motor is made of an alloy aluminum material so as to reduce the overall weight of the compressor.
Be equipped with cylinder collar extension (12) in the box 5, cylinder collar extension 12 comprises the interior rib 13 of box 5, and cylinder 6 is installed in cylinder collar extension (12), and there is the step cylinder 6 cylinder collar extension 12 bottom, guarantees that cylinder 6 can not move down.
Piston ring 7 adopts the oil-free leather cup formula piston ring, and its surface packing polytetrafluoroethylene uses the coefficient of friction on piston ring 7 and the cylinder 6 surface to reduce gradually, and piston ring 7's wearing and tearing volume also can reduce gradually, reaches no wearing and tearing even, and the friction loss work of compressor also can further descend simultaneously, and compression efficiency improves.
The crankshaft 3 adopts an eccentric block structure and is directly sleeved on the output shaft of the motor, and the structure can greatly reduce the axial size of the compressor and control the weight of the compressor.
The air inlet valve and the air outlet valve are made of valve plate steel special for the Sweden SANDVIK company, and the service quality of the valve plate steel is ensured by adopting conventional and reasonable processing and forming processes.
As shown in fig. 3, the heat dissipation air outlet 14 and the cavity inside the box 5 form a heat dissipation channel to quickly conduct and dissipate heat generated by the operation of the cylinder 6. The upper surface of the cylinder cover 9 is provided with a plurality of radiating fins, so that external natural wind blows the radiating fins on the cylinder cover 9, and the radiating efficiency is improved.
Compressor during operation, drive the rotatory cooling wind that produces of heat dissipation fan blade 2 in the time of the motion of tombarthite permanent magnet direct current motor drive piston assembly 10, the cooling wind blows through cylinder 6 along 5 inside channels of box then blows off box 5 by the heat dissipation venthole 14 of valve plate 8 with the box 5 junction, the heat discharge box 5 with 6 surperficial productions of cylinder fast, and simultaneously, the radiating fin on cylinder cap 9 surface can give off the heat fast, thereby avoid the rising of 6 temperatures of cylinder, guarantee the stability of 6 and 10 work of piston assembly of cylinder, prolong the life of 6 and the full oilless leather cup formula piston ring 7 of cylinder, and improved compressor stability.
Comprises an oil-free compressor 17, a cooler 19, a fine filter 20 and a one-way valve 21 which are connected in sequence;
one end of the oil-free compressor 17, which is far away from the cooler 19, is connected with the air inlet filter 16, and a safety valve 18 is also arranged between the oil-free compressor 17 and the cooler 19; namely, an air inlet cavity in the oil-free compressor 17 is connected with an air inlet filter 16, and an air outlet cavity in the oil-free compressor 17 is connected with a cooler 19; one end of the check valve 21, which is far away from the fine filter 20, is connected with an exhaust joint, and a pressure switch 22 is arranged between the check valve 21 and the exhaust joint.
The safety valve 18 is connected between the oil-free compressor 17 and the cooler 19 through a double-sleeve inner and outer thread three-way joint, and the pressure switch 22 is connected between the check valve 21 and the exhaust joint through an inner thread three-way joint.
The oil-free compressor 17, the cooler 19, the fine filter 20 and the check valve 21 are integrally arranged in the same shell.
Specifically, as shown in fig. 5, the oil-free compressor 17 has one end connected to the intake air filter 16 and the other end connected to the cooler 19, and a relief valve 18 is provided between the oil-free compressor 17 and the cooler 19. The other end of the cooler 19 is connected with a check valve 21 through a fine filter 20; the other end of the one-way valve 21 is connected with the exhaust joint, and a pressure switch 22 is arranged between the one-way valve 21 and the exhaust joint. The air inlet filter 16, the oil-free compressor 17, the safety valve 18, the cooler 19, the fine filter 20, the check valve 21 and the pressure switch 22 are integrally arranged in the same shell.
As shown in fig. 6, the cooler 19 is made of aluminum, is made of all aluminum, and is formed by welding. The air inlet pipe 24 and the air outlet pipe 25 of the cooler 19 are both in an aluminum pipe welding type, compared with a copper pipe of an existing compressor, the strength of the compressor is greatly increased, meanwhile, the reliability is enhanced, the compressor is suitable for being used in a severe vibration environment, and the defect that a traditional copper pipe is prone to cracking is overcome.
The present invention has many specific implementation ways, and the above description is only the preferred embodiment of the present invention, it should be noted that, for those skilled in the art, a plurality of improvements can be made without departing from the principles of the present invention, and these improvements should also be regarded as the protection scope of the present invention.
Claims (9)
1. The oil-free compressor is characterized by comprising a driving motor (1), a box body (5), a crankshaft (3), a cylinder (6) and a piston assembly (10), wherein the driving motor (1) is connected with the box body (5), an output shaft of the driving motor (1) extends into the box body (5), the cylinder (6) is fixedly connected into the box body (5), the piston assembly (10) comprises a piston ring (7) which is linked with the output shaft of the driving motor (1), and the piston ring (7) is arranged in the cylinder (6);
the output shaft of the driving motor (1) is also provided with a heat dissipation fan blade (2) used for blowing air to the air cylinder (6); the side wall of the box body (5) is provided with a plurality of heat dissipation air outlets (14) around the cylinder (6).
2. An oil-free compressor as claimed in claim 1, wherein a valve plate (8) is fixedly connected to the top opening of the cylinder (6), and the heat dissipation air outlet hole (14) is formed at the connection position of the valve plate (8) and the box body (5).
3. An oil-free compressor as claimed in claim 1, wherein the plurality of heat dissipation air outlets (14) are uniformly distributed along the circumferential direction of the tank (5).
4. An oil-free compressor as claimed in claim 1, wherein a plurality of heat dissipating fins are further provided on the cylinder head (9).
5. An oil-free compressor as claimed in claim 1, characterized in that the piston ring (7) is a cup piston ring.
6. An oil-free compressor as claimed in claim 1, wherein the drive motor (1) is a rare earth permanent magnet dc motor.
7. Auxiliary pantograph module comprising an oil-free compressor as claimed in claim 1, characterized by comprising an oil-free compressor (17), a cooler (19), a fine filter (20) and a non-return valve (21) connected in sequence;
one end of the oil-free compressor (17) far away from the cooler (19) is connected with an air inlet filter (16), and a safety valve (18) is arranged between the oil-free compressor (17) and the cooler (19); one end of the check valve (21) far away from the fine filter (20) is connected with an exhaust joint, and a pressure switch (22) is arranged between the check valve (21) and the exhaust joint.
8. Auxiliary pantograph module according to claim 7, characterized in that said safety valve (18) is interposed between the oil-free compressor (17) and the cooler (19) by means of a double-bayonet internal-external three-way joint, said pressure switch (22) being interposed between the non-return valve (21) and the exhaust joint by means of an internal-internal three-way joint.
9. Auxiliary pantograph module according to claim 7, characterized in that said oil-free compressor (17), cooler (19), fine filter (20) and non-return valve (21) are integrated in the same housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021955288.5U CN213711264U (en) | 2020-09-09 | 2020-09-09 | Oil-free compressor and auxiliary pantograph lifting module comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021955288.5U CN213711264U (en) | 2020-09-09 | 2020-09-09 | Oil-free compressor and auxiliary pantograph lifting module comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213711264U true CN213711264U (en) | 2021-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021955288.5U Active CN213711264U (en) | 2020-09-09 | 2020-09-09 | Oil-free compressor and auxiliary pantograph lifting module comprising same |
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| Country | Link |
|---|---|
| CN (1) | CN213711264U (en) |
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2020
- 2020-09-09 CN CN202021955288.5U patent/CN213711264U/en active Active
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