CN217081332U - Gear structure of motor pump unit of high-pressure cleaning machine - Google Patents
Gear structure of motor pump unit of high-pressure cleaning machine Download PDFInfo
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- CN217081332U CN217081332U CN202220975439.6U CN202220975439U CN217081332U CN 217081332 U CN217081332 U CN 217081332U CN 202220975439 U CN202220975439 U CN 202220975439U CN 217081332 U CN217081332 U CN 217081332U
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Abstract
The utility model provides a gear structure of high pressure cleaner motor pump unit belongs to high pressure cleaner technical field. It has solved the problem that current pinion appears damaging at high-speed rotation easily. This gear structure of high pressure cleaner motor pump unit, which comprises a motor, the motor has the pivot, the cover is equipped with the gear in the pivot, the gear includes tooth portion and cylinder portion, mounting hole one has been seted up along the axial of cylinder portion on the terminal surface of cylinder portion, mounting hole two that is linked together with mounting hole one has in the tooth portion, the internal diameter of mounting hole one is greater than the internal diameter of mounting hole two, the outer end of pivot has installation department one and installation department two, the external diameter of installation department two is less than the external diameter of installation department one, cylinder portion establishes on installation department one through the mounting hole one set, tooth portion establishes on installation department two through the mounting hole two sets. The structure solves the problem that the pinion is easy to damage when rotating at high speed.
Description
Technical Field
The utility model belongs to the technical field of high pressure cleaner motor, especially a gear structure of high pressure cleaner motor pump unit.
Background
The high-pressure washer is the most environment-friendly, economic and scientific cleaning equipment generally recognized in the world at present, and is widely applied to the fields of industry, commerce, civil use and the like. For example, chinese patent network discloses a high pressure cleaning machine motor pump unit suitable for internal gearing reduction transmission [ grant publication No.: CN212106177U, it includes high-pressure pump assembly, oil cylinder subassembly and high-pressure washer pump unit, and high-pressure washer pump unit includes high-pressure washer pump unit output, and high-pressure washer pump unit output is provided with the pinion, and the oil cylinder subassembly includes gear wheel, gear shaft, sloping cam plate and thrust bearing, and high-pressure pump assembly includes the pressure cell, and the pinion can be through the thrust bearing drive pressure cell that supports through the sloping cam plate after with the gear wheel internal gearing speed reduction do reciprocating motion.
The existing high-pressure cleaning machine pump unit generally adopts a series motor or an asynchronous motor as a power source, when the high-pressure cleaning machine adopts the asynchronous motor as the power source, the rotating speed and the torque of the asynchronous motor are low, so that the output power of the high-pressure cleaning machine is smaller, and the volume of the motor is larger, so that the volume of the whole high-pressure cleaning machine is larger; when the high pressure cleaner adopts the series motor as the power supply, the rotational speed of series motor is high, the moment of torsion is low, though improved high pressure cleaner's output, the pinion in the above-mentioned patent has the shaft hole that link up, and the pinion directly overlaps through the shaft hole and establish at high pressure cleaner pump unit output for the thickness of pinion wall is thinner, and the structural strength of pinion is lower, can't bear high rotational speed and rotate, makes the pinion very easily appear damaging when rotating at a high speed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at having the above-mentioned problem to current technique, provided a gear structure of high pressure cleaner motor pump unit, the utility model aims to solve the technical problem that: how to solve the problem that the pinion is easy to damage when rotating at high speed.
The purpose of the utility model can be realized by the following technical proposal:
the utility model provides a gear structure of high pressure cleaner motor pump unit, includes the motor, the motor has the pivot, the cover is equipped with the gear in the pivot, a serial communication port, the gear includes tooth portion and cylinder portion, the axial of cylinder portion has been seted up along the axial of cylinder portion on the terminal surface of cylinder portion has first mounting hole, have the mounting hole two that is linked together with first mounting hole in the tooth portion, the internal diameter of first mounting hole is greater than the internal diameter of mounting hole two, the outer end of pivot has installation department one and installation department two, the external diameter of installation department two is less than the external diameter of installation department one, cylinder portion establishes on installation department one through the mounting hole cover, tooth portion establishes on installation department two through the mounting hole cover.
The gear sleeved on the motor rotating shaft is a pinion in the prior art, the gear is divided into a tooth part and a cylindrical part, the length of the gear is prolonged equivalently, the cylindrical part is sleeved on the first mounting part through the mounting hole, and the tooth part is sleeved on the second mounting part through the mounting hole, so that the stability of the gear mounted on the rotating shaft is good; the outer diameter of the second mounting part in the rotating shaft is smaller, so that the inner diameter of the second mounting hole formed in the tooth part is smaller, the wall thickness of the tooth part is improved, the structural strength of the tooth part is improved, and the gear is not easy to damage in the high-speed rotating process.
In the above gear structure of the motor pump unit of the high-pressure cleaning machine, an end face of the tooth portion is provided with the exhaust hole along the axial direction of the tooth portion, and the exhaust hole is communicated with the mounting hole. Through the arrangement of the structure, the second installation part is inserted into the second installation hole in the installation process of the gear, then the first installation part is inserted into the first installation hole, and the air in the first installation hole and the air in the second installation hole are outwards exhausted due to the arrangement of the exhaust holes.
In the above gear structure of the motor pump unit of the high-pressure cleaning machine, the inner diameter of the exhaust hole is smaller than that of the second mounting hole, and a step surface capable of abutting against the outer end surface of the rotating shaft is arranged between the exhaust hole and the second mounting hole. Through the arrangement of the structure, the gear is arranged in the process of rotating the shaft, when the end face of the second installation part abuts against the step face, the gear is installed in place, and the step face plays a limiting role in the installation of the gear.
In the above-mentioned gear structure of the motor pump unit of the high pressure washer, the inner edge of one end of the cylindrical portion has a first chamfer. Through the setting of this structure, the gear is in the installation, and in installation department two inserted mounting hole one earlier, inserted mounting hole two again, installation department one inserts mounting hole one after that, and the convenience of installation department one and installation department two in the grafting in-process is facilitated in setting up of chamfer one.
In the above gear structure of the motor pump unit of the high-pressure cleaning machine, a guide hole is arranged in the gear, the guide hole is positioned between the first mounting hole and the second mounting hole, the guide hole is communicated with the first mounting hole and the second mounting hole, and the aperture of the guide hole is gradually reduced from the first mounting hole to the second mounting hole; the installation department one and have between the installation department two and be conical transition portion, the outer wall of transition portion pastes with the pore wall of guiding hole mutually and leans on. Through the setting of this structure, the setting of guiding hole makes things convenient for in installation department two can accurately insert mounting hole two, the gear installation back that targets in place, the stability of gear installation in the pivot is guaranteed to the structure that the outer wall of transition portion and the pore wall of guiding hole paste mutually.
In the above-described gear structure of the motor pump unit of the high pressure washer, the gear is made of 20Cr steel. Through the arrangement of the structure, the gear made of the material has the characteristics of high strength and high toughness, the service life of the gear is further prolonged, and the gear is not easy to damage.
In the above mentioned gear structure of the motor pump unit of the high pressure cleaning machine, the motor is a brushless motor. Through the setting of this structure, brushless motor has the characteristics of high rotational speed, has improved high pressure cleaner's output if adopting this motor as the power supply to brushless motor's small in size, and then has reduced high pressure cleaner's volume.
Compared with the prior art, the utility model discloses a high pressure cleaner motor pump unit's gear structure has following advantage: the gear sleeved on the motor rotating shaft is a pinion in the prior art, the gear is divided into a tooth part and a cylindrical part, the length of the gear is prolonged equivalently, the cylindrical part is sleeved on the first mounting part through the mounting hole, and the tooth part is sleeved on the second mounting part through the mounting hole, so that the stability of the gear mounted on the rotating shaft is good; the outer diameter of the second mounting part in the rotating shaft is smaller, so that the inner diameter of the second mounting hole formed in the tooth part is smaller, the wall thickness of the tooth part is improved, the structural strength of the tooth part is improved, and the gear is not easy to damage in the high-speed rotating process.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic view of the three-dimensional structure of the present invention with the gear removed.
Fig. 3 is a schematic perspective view of the gear of the present invention.
Fig. 4 is a second schematic perspective view of the gear of the present invention.
Fig. 5 is a schematic sectional structure of the present invention.
Fig. 6 is a schematic sectional view of the gear of the present invention.
In the figure, 1, a motor; 2. a rotating shaft; 20. a first mounting part; 21. a second mounting part; 22. a transition section; 3. a gear; 30. a tooth portion; 31 a cylindrical portion; 310. chamfering I; 4. a first mounting hole; 5. a second mounting hole; 6. an exhaust hole; 7. a step surface; 8. and (4) a guide hole.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1, fig. 2 and fig. 5, the gear structure of the motor pump unit of the high pressure cleaning machine comprises a motor 1, wherein the motor 1 is a brushless motor, the motor 1 is provided with a rotating shaft 2, a gear 3 is sleeved on the rotating shaft 2, and the gear 3 is made of 20Cr steel.
As shown in fig. 3, 4, 5 and 6, the gear 3 includes a tooth portion 30 and a cylindrical portion 31, the tooth portion 30 and the cylindrical portion 31 are integrally formed, a first mounting hole 4 is formed in an end surface of the cylindrical portion 31 along an axial direction of the cylindrical portion 31, a first chamfer 310 is formed on an inner edge of one end of the cylindrical portion 31, a second mounting hole 5 communicated with the first mounting hole 4 is formed in the tooth portion 30, the first mounting hole 4 and the second mounting hole 5 are coaxially arranged, an inner diameter of the first mounting hole 4 is larger than an inner diameter of the second mounting hole 5, a first mounting portion 20 and a second mounting portion 21 are formed at an outer end of the rotating shaft 2, an outer diameter of the second mounting portion 21 is smaller than an outer diameter of the first mounting portion 20, the cylindrical portion 31 is sleeved on the first mounting portion 20 through the first mounting hole 4, and the tooth portion 30 is sleeved on the second mounting portion 21 through the second mounting hole 5. The gear 3 is divided into a tooth part 30 and a cylindrical part 31, which is equivalent to the extension of the length of the gear 3, and the cylindrical part 31 is sleeved on the first mounting part 20 through the first mounting hole 4, and the tooth part 30 is sleeved on the second mounting part 21 through the second mounting hole 21, so that the stability of the gear 3 mounted on the rotating shaft 2 is good; the outer diameter of the second mounting part 21 in the rotating shaft 2 is smaller, so that the inner diameter of the second mounting hole 21 formed in the tooth part 30 is smaller, the wall thickness of the tooth part 30 is increased, the structural strength of the tooth part 30 is improved, and the gear 3 is not easy to damage in the high-speed rotating process.
As shown in fig. 3, 5 and 6, a vent hole 6 is opened in one end surface of the tooth portion 30 along the axial direction of the tooth portion 30, the vent hole 6 is communicated with the second mounting hole 5, the inner diameter of the vent hole 6 is smaller than the inner diameter of the second mounting hole 5, and a step surface 7 capable of abutting against the outer end surface of the rotating shaft 2 is arranged between the vent hole 6 and the second mounting hole 5. In the process that the gear is installed on the rotating shaft, when the end face of the second installation part abuts against the step face, the gear is installed in place, the step face plays a limiting role in installation of the gear, and air in the first installation hole 4 and air in the second installation hole 5 are exhausted outwards through the exhaust hole 6.
As shown in fig. 2 to 6, a guide hole 8 is formed in the gear 3, the guide hole 8 is located between the first mounting hole 4 and the second mounting hole 5, the guide hole 8 is communicated with the first mounting hole 4 and the second mounting hole 5, and the aperture of the guide hole 8 is gradually reduced from the first mounting hole 4 to the second mounting hole 5; a conical transition part 22 is arranged between the first mounting part 20 and the second mounting part 21, and the outer wall of the transition part 22 is abutted against the hole wall of the guide hole 8. Gear 3 is in the installation, in installation department two 21 inserts mounting hole one 4 earlier, insert mounting hole two 5 again, in installation department one 20 inserts mounting hole one 4 next, the setting up of guiding hole 8 makes things convenient for installation department two 21 can accurately insert mounting hole two 5 in, gear 3 installs the back that targets in place, the stability of gear 3 installation on pivot 2 is guaranteed to the structure that the outer wall of transition portion 22 and the pore wall of guiding hole 8 pasted mutually.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (7)
1. The gear structure of the motor pump unit of the high-pressure cleaning machine comprises a motor (1), wherein the motor (1) is provided with a rotating shaft (2), the rotating shaft (2) is sleeved with a gear (3), the gear (3) comprises a toothed portion (30) and a cylindrical portion (31), a first mounting hole (4) is formed in the end face of the cylindrical portion (31) along the axial direction of the cylindrical portion (31), a second mounting hole (5) communicated with the first mounting hole (4) is formed in the toothed portion (30), the inner diameter of the first mounting hole (4) is larger than that of the second mounting hole (5), the outer end of the rotating shaft (2) is provided with a first mounting portion (20) and a second mounting portion (21), the outer diameter of the second mounting portion (21) is smaller than that of the first mounting portion (20), the cylindrical portion (31) is sleeved on the first mounting portion (20) through the first mounting hole (4), the tooth part (30) is sleeved on the second mounting part (21) through the second mounting hole (5).
2. The gear structure of the motor pump unit of the high-pressure cleaning machine according to claim 1, wherein an end surface of the tooth portion (30) is provided with a vent hole (6) along an axial direction of the tooth portion (30), and the vent hole (6) is communicated with the second mounting hole (5).
3. The gear structure of the motor pump unit of the high-pressure washer according to claim 2, characterized in that the inner diameter of the exhaust hole (6) is smaller than the inner diameter of the second mounting hole (5), and a step surface (7) capable of abutting against the outer end surface of the rotating shaft (2) is arranged between the exhaust hole (6) and the second mounting hole (5).
4. The gear structure of a pump unit of a high-pressure washer motor according to claim 1, characterized in that an inner edge of one end of the cylindrical portion (31) has a chamfer one (310).
5. The gear structure of the motor pump unit of the high-pressure cleaning machine according to claim 1, characterized in that a guide hole (8) is formed in the gear (3), the guide hole (8) is located between the first mounting hole (4) and the second mounting hole (5), the guide hole (8) is communicated with the first mounting hole (4) and the second mounting hole (5), and the diameter of the guide hole (8) is gradually reduced from the first mounting hole (4) to the second mounting hole (5).
6. Gear structure for a high-pressure washer motor pump unit according to any of claims 1-5, characterized in that the gear wheel (3) is made of 20Cr steel.
7. The gear structure of a motor pump unit of a high-pressure washer according to any of claims 1-5, characterized in that the motor (1) is a brushless motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220975439.6U CN217081332U (en) | 2022-04-24 | 2022-04-24 | Gear structure of motor pump unit of high-pressure cleaning machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220975439.6U CN217081332U (en) | 2022-04-24 | 2022-04-24 | Gear structure of motor pump unit of high-pressure cleaning machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217081332U true CN217081332U (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220975439.6U Active CN217081332U (en) | 2022-04-24 | 2022-04-24 | Gear structure of motor pump unit of high-pressure cleaning machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217081332U (en) |
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2022
- 2022-04-24 CN CN202220975439.6U patent/CN217081332U/en active Active
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