CN112265522B - Automobile wheel hub cleaning equipment - Google Patents

Automobile wheel hub cleaning equipment Download PDF

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Publication number
CN112265522B
CN112265522B CN202010957999.4A CN202010957999A CN112265522B CN 112265522 B CN112265522 B CN 112265522B CN 202010957999 A CN202010957999 A CN 202010957999A CN 112265522 B CN112265522 B CN 112265522B
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CN
China
Prior art keywords
box body
guide plate
box
plate
gear
Prior art date
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Expired - Fee Related
Application number
CN202010957999.4A
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Chinese (zh)
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CN112265522A (en
Inventor
王保国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hubei Wuyou Car Butler Network Technology Service Co ltd
Original Assignee
Hubei Wuyou Car Butler Network Technology Service Co ltd
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Application filed by Hubei Wuyou Car Butler Network Technology Service Co ltd filed Critical Hubei Wuyou Car Butler Network Technology Service Co ltd
Priority to CN202010957999.4A priority Critical patent/CN112265522B/en
Publication of CN112265522A publication Critical patent/CN112265522A/en
Application granted granted Critical
Publication of CN112265522B publication Critical patent/CN112265522B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60SSERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S3/00Vehicle cleaning apparatus not integral with vehicles
    • B60S3/04Vehicle cleaning apparatus not integral with vehicles for exteriors of land vehicles
    • B60S3/042Wheel cleaning devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04Cleaning involving contact with liquid
    • B08B3/10Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/14Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquids

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The invention relates to the technical field of automobile part maintenance equipment and discloses automobile hub cleaning equipment which comprises a cleaning equipment body, wherein the cleaning equipment body comprises a first box body, a supporting leg is fixedly connected to the bottom surface of the first box body, a hollow cylinder with an opening on the top surface is arranged on one position of the first box body, a stirring device and a clamping device are arranged in the first box body, a filtering device and a shifting device are also arranged in the first box body, the cleaning agent mixed with silt impurities enters the second box body through the guide of the drainage plate, and the cleaning agent mixed with silt impurities is turned upwards through the guide of the upper guide plate and the lower guide plate, simultaneously go up the baffle and guarantee relatively that silt can not the backward flow after getting into box two and cause secondary pollution in flowing back box one, cleaner and silt separate under the action of gravity, through the filtration of filter screen, make cleaner and impurity separation, reach the filter effect, guarantee the cleanliness factor of cleaner and guarantee next cleaning quality.

Description

Automobile wheel hub cleaning equipment
Technical Field
The invention relates to the technical field of automobile part maintenance equipment, in particular to automobile hub cleaning equipment.
Background
The car is more and more common as an important vehicle, the car need carry out on time Europe washing maintenance, including the washing maintenance to wheel hub, because wheel hub's use specificity, wheel hub loads the direct and ground contact of tire, often there are sand and other magazines adhesion on wheel hub, can get into in the cleaning equipment when wasing like this, silt mixes in the cleaning equipment, silt follows the wheel hub and rotates the surface that can harm wheel hub and cause the mar, be unfavorable for next washing, the detergent that impurity mixture is in the detergent is more and more muddy simultaneously, so need improve current wheel hub cleaning equipment.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides automobile hub cleaning equipment which has the advantage of filtering silt in an equipment body, and solves the problems that the silt is mixed in the cleaning equipment, the surface of a hub is damaged by the rotation of the silt along with the hub, scratches are caused, and the cleaning of the next time is not facilitated.
(II) technical scheme
In order to realize the purpose of filtering the silt in the equipment body, the invention provides the following technical scheme: the utility model provides an automobile wheel hub cleaning equipment, includes the cleaning equipment body, the cleaning equipment body includes box one, the fixed even supporting leg in box one bottom surface, box one is top surface open-ended hollow cylinder, sets up agitating unit and clamp in the box one and hits the device, still sets up filter equipment and striking device in the box one, filter equipment includes box two, wash port, filter screen, upper baffle, lower baffle and drainage plate, box two is hollow cuboid, and the opening is seted up to the antetheca face of box two, the antetheca fixed connection of drainage plate and box two, the interior antetheca fixed connection of upper baffle and box two, the interior bottom fixed connection of baffle and box two down, the wash port is seted up to the filter screen and the inner wall fixed connection of box two, the top surface of box two.
Preferably, the drainage plate is installed obliquely downwards, the bottom surface of the drainage plate is flush with the outer bottom surface of the second box body, the transverse sections of the upper guide plate and the lower guide plate are C-shaped, concave surfaces of the upper guide plate and the lower guide plate are arranged oppositely, and the upper guide plate and the lower guide plate are not in contact.
Preferably, agitating unit includes crank, screw rod one, stirring rake and pivot, crank and screw rod one fixed connection, a right side wall and screw rod one that the screw rod runs through box one rotate with a box and be connected, the bottom rotates in pivot and the box one and is connected, the lateral wall of pivot set up the slope screw thread mouth pivot and with a screw rod interlock, the lateral wall fixed connection of stirring rake and pivot.
Preferably, the clamping and striking device comprises a support plate, a left clamp plate, a chute, a right clamp plate and a second threaded rod, the bottom surface of the support plate is fixedly connected with the upper end surface of the rotating shaft, the right clamp plate is fixedly connected with the top surface of the support plate, the chute is arranged on the top surface of the support plate, the left clamp plate is in sliding connection with the chute, the second threaded rod is in threaded connection with the support plate, the left end surface of the second threaded rod is in rotating connection with the right side wall of the left clamp plate,
preferably, the shifting device comprises a gear belt, a gear and a tooth opening, the gear belt is a cuboid, a rectangular groove is formed in the center of the gear belt, the tooth opening is formed in the inner front side wall of the center of the gear belt and the inner rear side wall of the gear belt, the gear is fixedly connected with a screw rod, the gear is meshed with the tooth opening, and the gear is only provided with a half circle of teeth.
(III) advantageous effects
Compared with the prior art, the invention provides automobile hub cleaning equipment, which has the following beneficial effects:
1. this automobile wheel hub cleaning equipment, through the guide entering box two of drainage plate of the cleaner that will be mingled with silt impurity, the guide through last baffle and lower baffle will be mingled with the washing of silt and upwards turn, it relatively guarantees that silt can not the backward flow after getting into box two to flow back to the box and cause secondary pollution to go up baffle and lower baffle concave surface simultaneously, cleaner and silt separate under the action of gravity, the filtration through the filter screen, it is two outer to discharge the box through the wash port, make cleaner and impurity separation, reach the filter effect, guarantee the clean degree clean children of cleaner and guarantee the cleaning quality next time.
2. This automobile wheel hub cleaning equipment, the rotation of crossing screw rod one drives the gear and rotates, when the tooth of gear and the tooth mouth meshing that leans on before, a screw rod rotation drives the gear and rotates, the gear stirs the tooth mouth and drives the gear area and move down, when the gear rotates to the tooth mouth separation that leans on before to the tooth of gear and the tooth mouth meshing that leans on after, the gear area shifts up with above-mentioned the same mode, the gear lasts to rotate and drives gear area up-and-down reciprocating motion and then drive two up-and-down reciprocating motion of box, the impurity of two up-and-down motion fortune each water layers of box cleaner filters, the filter effect is strengthened, filterable efficiency has been improved.
3. This automobile wheel hub cleaning equipment, slide and be close to right splint gradually in the spout through rotating two drive left splint of threaded rod, make the distance between left splint and the right splint reduce to press from both sides and hit wheel hub, interval between the specific adjustment left splint of wheel hub according to not unidimensional and the right splint, conveniently wash different wheel hub, it rotates to drive screw rod pole through rotating the crank, the stirring rake that the screw rod drove rotates on stirs the cleaner, make cleaner and wheel hub fully contact, the stirring rake stirs the cleaner simultaneously and makes the cleaner clockwise rotation, two better washing drainage to box two that will be mingled with impurity of cooperation opening forward, silt impurity in the faster filtration cleaner.
Drawings
FIG. 1 is a schematic longitudinal sectional view of the present invention;
FIG. 2 is a schematic perspective view of a second case and a gear belt according to the present invention;
FIG. 3 is a left side view schematic diagram of the second case and the gear belt of the present invention;
FIG. 4 is an enlarged view of A of FIG. 1 according to the present invention.
In the figure: 10. a first box body; 11. a crank; 12. a first screw rod; 13. a stirring paddle; 14. a support plate; 15. a second box body; 16. a drain hole; 17. a filter screen; 18. an upper guide plate; 19. a lower guide plate; 20. a drainage plate; 21. a gear belt; 22. a gear; 23. a tooth mouth; 24. a left splint; 25. a chute; 26. a right splint; 27. a second threaded rod; 28. a rotating shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, an automobile hub cleaning device comprises a cleaning device body, the cleaning device body comprises a first box body 10, a support leg is fixedly connected to the bottom surface of the first box body 10, the first box body 10 is a hollow cylinder with an open top surface, a stirring device and a clamping device are arranged in the first box body 10, a filtering device and a shifting device are further arranged in the first box body 10, the filtering device comprises a second box body 15, a water discharge hole 16, a filter screen 17, an upper guide plate 18, a lower guide plate 19 and a drainage plate 20, the second box body 15 is a hollow cuboid, an opening is formed in the front wall surface of the second box body 15, the drainage plate 20 is fixedly connected with the front wall surface of the second box body 15, the upper guide plate 18 is fixedly connected with the inner front wall surface of the second box body 15, the lower guide plate 19 is fixedly connected with the inner bottom surface of the second box body 15, the filter screen 17 is fixedly connected with the inner wall of the second box body 15, the top surface of the second box body 15 is provided with the water discharge hole 16, the drainage plate 20 is installed obliquely downwards, and the bottom surface of the drainage plate 20 is flush with the outer bottom surface of the second box body 15, the transverse cross section of the upper guide plate 18 and the lower guide plate 19 is C-shaped, the concave surfaces of the upper guide plate 18 and the lower guide plate 19 are oppositely arranged, the upper guide plate 18 and the lower guide plate 19 are not in contact, the cleaning agent mixed with silt impurities enters the second box body 15 through the guide of the drainage plate 20, the cleaning agent mixed with silt is upwards turned through the guide of the upper guide plate 18 and the lower guide plate 19, meanwhile, the concave surfaces of the upper guide plate 18 and the lower guide plate 19 relatively ensure that the silt cannot reversely flow and flow back into the first box body 10 after entering the second box body 15 to cause secondary pollution, the cleaning agent and the silt are separated under the action of gravity, the cleaning agent is filtered by the filter screen 17, and is discharged out of the second box body 15 through the drain hole 16, so that the cleaning agent and the impurities are separated, the filtering effect is achieved, and the cleanliness of the cleaning agent is ensured to ensure the next cleaning quality.
The toggle device comprises a gear belt 21, a gear 22 and a tooth opening 23, wherein the gear belt 21 is cuboid, a rectangular groove is formed in the center of the gear belt 21, the inner front side wall of the center of the gear belt 21 and the inner rear side wall of the gear belt 21 are respectively provided with the tooth opening 23, the gear 22 is fixedly connected with the screw rod I12, the gear 22 is meshed with the tooth opening 23, the gear 22 only has half circle of teeth, the gear 22 is driven to rotate by the rotation of the screw rod I12, when the teeth of the gear 22 are meshed with the tooth opening 23 close to the front, the screw rod I12 rotates to drive the gear 22 to rotate, the gear 22 drives the tooth opening 23 to drive the gear belt 21 to move downwards, when the gear 22 rotates to separate the tooth opening 23 close to the front to the tooth opening 23 of the gear 22 to be meshed with the tooth opening 23 close to the rear, the gear belt 21 moves upwards in the same way, the gear 22 continuously rotates to drive the gear belt 21 to reciprocate upwards and downwards to drive the box II 15 to reciprocate upwards and downwards, the box II 15 moves upwards and downwards to transport impurities of each water layer of the cleaning agent to filter, the filtering effect is enhanced, and the filtering efficiency is improved.
The stirring device comprises a crank 11, a first screw rod 12, a stirring paddle 13 and a rotating shaft 28, the crank 11 is fixedly connected with the first screw rod 12, the first screw rod 12 penetrates through the right side wall of the first box body 10, the first screw rod 12 is rotatably connected with the first box body 10, the rotating shaft 28 is rotatably connected with the inner bottom surface of the first box body 10, the side wall of the rotating shaft 28 is provided with an inclined threaded hole, the rotating shaft 28 is meshed with the first screw rod 12, the stirring paddle 13 is fixedly connected with the side wall of the rotating shaft 28, the clamping device comprises a supporting plate 14, a left clamping plate 24, a sliding groove 25, a right clamping plate 26 and a second screw rod 27, the bottom surface of the supporting plate 14 is fixedly connected with the upper end surface of the rotating shaft 28, the right clamping plate 26 is fixedly connected with the top surface of the supporting plate 14, the sliding groove 25 is arranged on the top surface of the supporting plate 14, the left clamping plate 24 is slidably connected with the sliding groove 25, the second screw rod 27 is in threaded connection with the supporting plate 14, and the left end surface of the second screw rod 27 is rotatably connected with the right side wall of the left clamping plate 24, drive left splint 24 and slide and be close to right splint 26 gradually in spout 25 through rotating two 27 threaded rod, make the distance between left splint 24 and the right splint 26 reduce to press from both sides and hit wheel hub, interval between the specific adjustment left splint 24 of wheel hub according to not unidimensional and the right splint 26, conveniently wash different wheel hub, drive screw rod 12 through rotating crank 11 and rotate, screw rod 12 drives 13 rotations of stirring rake in the pivot 28 and stirs the cleaner, make cleaner and wheel hub fully contact, stirring rake 13 stirs the cleaner simultaneously and makes cleaner clockwise rotation, cooperate two 15 better washing drainage to two 15 of box that will be mingled with impurity that the opening is forward, silt impurity in the faster filtration cleaner.
When the cleaning machine is used, the second rotary threaded rod 27 drives the left clamping plate 24 to slide in the sliding groove 25 and gradually approach the right clamping plate 26, so that the distance between the left clamping plate 24 and the right clamping plate 26 is reduced, the hub is clamped, the first screw rod 12 is driven to rotate by rotating the crank 11, the first screw rod 12 drives the stirring paddle 13 on the rotary shaft 28 to rotate to stir a cleaning agent, the cleaning agent is fully contacted with the hub, the gear 22 is driven to rotate by the rotation of the first screw rod 12, the gear 22 continuously rotates to drive the gear belt 21 to reciprocate up and down to further drive the second box body 15 to reciprocate up and down, the cleaning agent mixed with silt and impurities enters the second box body 15 through the guide of the drainage plate 20, the cleaning agent mixed with silt is turned over through the guide of the upper guide plate 18 and the lower guide plate 19, and meanwhile, the concave surfaces of the upper guide plate 18 and the lower guide plate 19 relatively ensure that the silt cannot reversely flow and flow back to the first box body 10 to cause secondary pollution after entering the second box body 15, the cleaning agent and the silt are separated under the action of gravity, filtered by the filter screen 17 and discharged out of the second box body 15 through the drain hole 16.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. The utility model provides an automobile wheel hub cleaning equipment, includes the cleaning equipment body, the cleaning equipment body includes box (10), box (10) bottom surface is fixed even support leg, its characterized in that: the box body I (10) is a hollow cylinder with an opening on the top surface, a stirring device and a clamping device are arranged in the box body I (10), a filtering device and a shifting device are further arranged in the box body I (10), the filtering device comprises a box body II (15), a drain hole (16), a filtering net (17), an upper guide plate (18), a lower guide plate (19) and a drainage plate (20), the box body II (15) is a hollow cuboid, an opening is formed in the front wall surface of the box body II (15), the drainage plate (20) is fixedly connected with the front wall surface of the box body II (15), the upper guide plate (18) is fixedly connected with the inner front wall surface of the box body II (15), the lower guide plate (19) is fixedly connected with the inner bottom surface of the box body II (15), the filtering net (17) is fixedly connected with the inner wall of the box body II (15), and the drain hole (16) is formed in the top surface of the box body II (15);
the drainage plate (20) is obliquely and downwardly installed, the bottom surface of the drainage plate (20) is flush with the outer bottom surface of the second box body (15), the transverse sections of the upper guide plate (18) and the lower guide plate (19) are C-shaped, the concave surfaces of the upper guide plate (18) and the lower guide plate (19) are oppositely arranged, and the upper guide plate (18) and the lower guide plate (19) are not contacted.
2. The automobile hub cleaning equipment according to claim 1, characterized in that: agitating unit includes crank (11), screw rod (12), stirring rake (13) and pivot (28), crank (11) and screw rod (12) fixed connection, screw rod (12) run through right side wall and screw rod (12) of box (10) and rotate with box (10) and be connected, bottom surface rotation is connected in pivot (28) and box (10), and the lateral wall of pivot (28) is seted up slope screw thread mouth and pivot (28) and screw rod (12) interlock, the lateral wall fixed connection of stirring rake (13) and pivot (28).
3. The automobile hub cleaning equipment according to claim 2, characterized in that: the clamping and striking device comprises a supporting plate (14), a left clamping plate (24), a sliding groove (25), a right clamping plate (26) and a threaded rod II (27), the bottom surface of the supporting plate (14) is fixedly connected with the upper end face of a rotating shaft (28), the right clamping plate (26) is fixedly connected with the top face of the supporting plate (14), the sliding groove (25) is formed in the top face of the supporting plate (14), the left clamping plate (24) is slidably connected with the sliding groove (25), and the threaded rod II (27) is rotatably connected with the right side wall of the supporting plate (14) through threaded connection and the left end face of the threaded rod II (27) and the right side wall of the left clamping plate (24).
4. The automobile hub cleaning equipment according to claim 2, characterized in that: the shifting device comprises a gear belt (21), a gear (22) and a tooth opening (23), wherein the gear belt (21) is a cuboid, a rectangular groove is formed in the center of the gear belt (21), the tooth opening (23) is formed in the inner front side wall of the center of the gear belt (21) and the inner rear side wall of the gear belt (21), the gear (22) is fixedly connected with a screw rod (12), the gear (22) is meshed with the tooth opening (23), and only half circle of teeth are arranged on the gear (22).
CN202010957999.4A 2020-09-11 2020-09-11 Automobile wheel hub cleaning equipment Expired - Fee Related CN112265522B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010957999.4A CN112265522B (en) 2020-09-11 2020-09-11 Automobile wheel hub cleaning equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010957999.4A CN112265522B (en) 2020-09-11 2020-09-11 Automobile wheel hub cleaning equipment

Publications (2)

Publication Number Publication Date
CN112265522A CN112265522A (en) 2021-01-26
CN112265522B true CN112265522B (en) 2022-05-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010957999.4A Expired - Fee Related CN112265522B (en) 2020-09-11 2020-09-11 Automobile wheel hub cleaning equipment

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Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007034464B4 (en) * 2007-07-20 2011-07-14 ph-cleantec GmbH, 70736 cleaner
KR20140009786A (en) * 2012-07-13 2014-01-23 네오소닉 주식회사 Tire softning device using ultrasonic wave
CN106311662B (en) * 2016-08-17 2018-09-04 沅陵县向华电子科技有限公司 A kind of energy-saving cleaning device of aluminium skimmings recycling
CN107096757A (en) * 2017-05-12 2017-08-29 成都大漠石油技术有限公司 Cleaning is attached to the device of petroleum exploration drilling-rod external wall spot
CN107520117A (en) * 2017-09-01 2017-12-29 田建珍 A kind of efficient Sand screen in ore stock ground
CN107470261A (en) * 2017-09-29 2017-12-15 黄石市火炬科技实业有限责任公司 A kind of cleaning device of metallurgical material
CN107512817B (en) * 2017-10-23 2018-11-23 泉州市春川贸易有限公司 Sewage treatment circulating-use equipment in carwash shop
CN207757387U (en) * 2017-12-11 2018-08-24 新乡职业技术学院 A kind of auto parts and components grinding device

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PB01 Publication
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SE01 Entry into force of request for substantive examination
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Effective date of registration: 20220421

Address after: 441000 room C103, block C, high tech entrepreneurship service center, No. 2, zhuiri Road, high tech Zone, Xiangyang City, Hubei Province

Applicant after: Hubei Wuyou car Butler Network Technology Service Co.,Ltd.

Address before: No.229 Luoyuan street, Shizhong District, Jinan City, Shandong Province

Applicant before: Wang Baoguo

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CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20220510