CN209727348U - A kind of tyre balanee tester changes rim device - Google Patents
A kind of tyre balanee tester changes rim device Download PDFInfo
- Publication number
- CN209727348U CN209727348U CN201920781173.XU CN201920781173U CN209727348U CN 209727348 U CN209727348 U CN 209727348U CN 201920781173 U CN201920781173 U CN 201920781173U CN 209727348 U CN209727348 U CN 209727348U
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- rim
- capstan head
- pivoted arm
- host
- stocking mechanism
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Abstract
Rim device is changed the utility model discloses a kind of tyre balanee tester, including installing host of the rim assembly to be tested, the stocking mechanism positioned at host side to place rim assembly, the transfer device to be moved to rim assembly from stocking mechanism on host is equipped between the two.Change rim device during the work time, rim assembly is moved on host by transfer device from stocking mechanism, Moment caused by rim assembly is born as transfer device, and then it avoids rim device and bears moment of flexure, thus avoid rim device run-off the straight, the mechanical precision that ensure that rim device and lower main shaft, ensure that the accuracy of equipment test data.
Description
Technical field
The utility model relates to vehicle test equipment technical field, in particular to a kind of tyre balanee tester changes wheel rim
Device.
Background technique
Dynamic balance test machine is the special inspecting equipment of the full-automatic on-line testing for tire dynamic and balance performance,
Wheel rim is dedicated split type wheel rim, and split type wheel rim is building block important in dynamic balance test machine.Tire dynamic and balance
The test scope of experiment is larger, and experiment needs are equipped with every time covers wheel rim more, and needs often to replace wheel during actual test
Rim is tested.
In order to reduce the labor intensity of replacement wheel hub, producer both domestic and external develops the machine having from wheel rim function is moved
Type.Usually capstan head is arranged in the side of host in such type, and rim assembly is placed on the pivoted arm of capstan head.When replacing wheel rim, turn
Tower rotation goes to required wheel rim at the main-shaft core of host, then is replaced by upper rim device crawl rim assembly.But it adopts
When replacing rim assembly with the mechanism, biggish Moment Influence can be generated to upper rim device and mainframe, to take turns on influencing
The mechanical precision of rim device and lower main shaft finally influences the accuracy of equipment test data.
Therefore, how to reduce influence of the moment of flexure to mainframe, the accuracy for improving equipment test data is art technology
Personnel's technical problem urgently to be solved.
Utility model content
Rim device is changed the purpose of the utility model is to provide a kind of tyre balanee tester, it will by transfer device
Rim assembly is moved on host from stocking mechanism, is avoided rim device and is born Moment, and then ensure that wheel rim
The mechanical precision of device and lower main shaft.
To achieve the above object, the utility model provides a kind of rim device of changing of tyre balanee tester, including installation
Host of the rim assembly to be tested, the stocking mechanism positioned at the host side to place rim assembly, the host
The transfer device to be moved to rim assembly from the stocking mechanism on the host is equipped between the storing mechanism.
Preferably, the transfer device includes pivoted arm and the driving portion to drive the pivoted arm rotation, the host packet
Include the mainframe being arranged along the vertical direction, the pivoted arm is installed in the mainframe towards the side of the stocking mechanism, described
Driving portion is connected, for installing the shaft of the pivoted arm to drive the pivoted arm in the master of the mainframe on the mainframe
The pickup interdigit of axis and the stocking mechanism is mobile.
Preferably, the stocking mechanism includes capstan head column and the turntable for being sheathed on capstan head column periphery, and described turn
The end of the linking arm that disk is extended radially outward at least provided with two, the every linking arm is equipped with to place rim assembly
Pallet, the stocking mechanism further include be connected with the capstan head column, for driving capstan head column rotation, so that described
Pallet is successively moved to the rotation section of the pickup position.
Preferably, the stocking mechanism further includes pedestal, and the lower end of the capstan head column is connected with the pedestal, and described turn
Dynamic portion is capstan head rotating servo motor, and the capstan head rotating servo motor is located at the side of the capstan head column, in the pedestal
Equipped with the driving section for connecting the capstan head rotating servo motor and the capstan head column.
Preferably, the lifting unit and/or the transfer device that the stocking mechanism is equipped with to go up and down the turntable are equipped with
To go up and down the lifting unit of the pivoted arm, so that the transfer device can hold up rim assembly.
Preferably, the stocking mechanism is equipped with the lifting unit, and the lifting unit includes lead screw and to rotate the silk
The capstan head lift servo motor of thick stick, the periphery of the capstan head column are equipped with the support key being connected with the turntable, and the lead screw is set
It is placed in inside the capstan head column, the lead screw is connected with the support key by screw.
Preferably, the capstan head lift servo motor is located at the upper end of the capstan head column.
Preferably, the stocking mechanism is equipped with for limiting the turntable corner, so as to the pallet and the pivoted arm pair
Positive capstan head positioning mechanism.
Preferably, the driving portion is pivoted arm servo motor, and the transfer device is set there are two pivoted arm positioning mechanism, the two
Can respectively by the front end that the pivoted arm is positioned at the pivoted arm be located at the host main shaft lower section and be located at the storage
At the position of the pickup position of mechanism.
Preferably, further include positioning beam that both ends are connected with the host and the stocking mechanism respectively, when the positioning
Beam connects the host and the stocking mechanism, and when the pivoted arm is rocked to extreme position, the front end of the pivoted arm and described
The pickup position of the main shaft of host or the stocking mechanism is to just.
In the prior art, host grabs rim assembly by upper rim device and is replaced, and upper rim device is usually located
Often larger in the quality of suspended state, rim assembly, rim assembly gravity can apply Moment to upper rim device, be easy
Rim device run-off the straight is caused, thus is easy to influence the mechanical precision of upper rim device and lower main shaft.
Tyre balanee tester provided by the utility model changes rim device, including installation rim assembly to be surveyed
The host of examination, the stocking mechanism positioned at host side to place rim assembly, be equipped between the two to by rim assembly from storage
Deposit the transfer device that mechanism is moved on host.
Change rim device during the work time, rim assembly is moved on host by transfer device from stocking mechanism, by turning
Telephone-moving structure bears Moment caused by rim assembly, and then avoids rim device and bear moment of flexure, thus avoids
Rim device run-off the straight ensure that the mechanical precision of rim device and lower main shaft, ensure that the accurate of equipment test data
Property.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 changes the positive structural schematic diagram of rim device for tyre balanee tester provided by the utility model；
Fig. 2 is the structural schematic diagram for changing rim device side of tyre balanee tester；
Fig. 3 is the schematic diagram of turret apparatus.
Wherein, appended drawing reference of the Fig. 1 into Fig. 3 are as follows:
Capstan head rotating servo motor 1, pedestal 2, rim assembly 3, capstan head column 4, capstan head lift servo motor 5, turntable 6,
Capstan head positioning mechanism 7, positioning beam 8, mainframe 9, pivoted arm servo motor 10, pivoted arm 11, upper rim device 12, grabbing device 13,
Bracket 14, main shaft 15, pivoted arm positioning mechanism 16, lead screw 17, support key 18, screw 19, bearing 20, synchronous belt 21.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
In order to make those skilled in the art more fully understand the utility model, with reference to the accompanying drawing and specifically
The utility model is described in further detail for embodiment.
Fig. 1 to Fig. 3 is please referred to, Fig. 1 changes rim device front for tyre balanee tester provided by the utility model
Structural schematic diagram；Fig. 2 is the structural schematic diagram for changing rim device side of tyre balanee tester；Fig. 3 is turret apparatus
Schematic diagram.
Tyre balanee tester provided by the utility model changes rim device, as depicted in figs. 1 and 2, including host,
Stocking mechanism and transfer device, rim assembly 3 include upper wheel rim and lower wheel rim.Rim assembly 3 needed for test is placed on storage
In mechanism, rim assembly 3 is mounted on host and is tested, and can get the dynamic balancing parameter of tire collocation wheel rim.Transfer device position
Between stocking mechanism and host, rim assembly 3 in the stocking mechanism that can take, and place it in the main shaft 15 of host
On.
Specifically, host includes mainframe 9, the side of mainframe 9 is equipped with the upper rim device that can be moved along the vertical direction
12, one end that upper rim device 12 suspends is equipped with grabbing device 13, and the mainframe 9 immediately below grabbing device 13 is equipped with main shaft 15
With bracket 14.The specific structure of mainframe 9 can refer to the prior art, and details are not described herein.
Stocking mechanism can refer to capstan head in the prior art, and transfer device can be specially mechanical arm etc., the end of mechanical arm
Pneumatic clamper is installed, the rim assembly 3 on capstan head is grabbed by pneumatic clamper, and be moved on the main shaft 15 of mainframe 9.Certainly, it stores up
It deposits mechanism and other structures in the prior art can also be used in transfer device, it is not limited here.
In the present embodiment, changes rim device and be provided with transfer device between host and stocking mechanism, transfer device can incite somebody to action
The rim assembly 3 being placed on stocking mechanism is mobile and is placed on the main shaft 15 of host, without passing through upper rim device 12
Rim assembly 3 is grabbed from stocking mechanism, is reduced the load of rim device 12, is avoided rim device 12 because of rim assembly
Moment caused by 3 gravity and run-off the straight, ensure that the mechanical precision and equipment of rim device 12 and main shaft 15
The accuracy of test data.
Optionally, transfer device includes pivoted arm 11 and driving portion, as shown in Figure 1, pivoted arm 11 passes through shaft and 9 court of mainframe
It is connected to the side of stocking mechanism, driving portion is connected with shaft, and then pivoted arm 11 is driven to swing in the horizontal direction.Before pivoted arm 11
End is equipped with circular support hand, and when pivoted arm 11 is rocked to side maximum position, support hand is located at 15 top of main shaft of mainframe 9；When
When pivoted arm 11 is rocked to other side maximum position, ask hand and the rim assembly 3 on the pickup position of stocking mechanism coaxial.Wherein, it stores up
Settable multiple positions for placing rim assemblies 3 in mechanism are deposited, one or more takes rim assembly 3 for pivoted arm 11
Pickup position.
Optionally, stocking mechanism includes capstan head column 4, turntable 6 and rotation section, and turntable 6 is sheathed on the outer of capstan head column 4
Week, the linking arm extended radially outward at least provided with two, every linking arm are equipped with far from one end of capstan head column 4 for putting
Set the circular pallet of rim assembly 3, in the present embodiment, turntable 6 is equipped with 4 linking arms being uniformly distributed circumferentially, 4 connections
Pallet on arm is located on same circumference, and the center of circle of the circumference is on 4 axis of capstan head column.As shown in Figure 1, pallet is annular in shape,
Its inner ring diameter is greater than the diameter of 11 pop-up hand of pivoted arm, and pallet is equipped with notch far from the side of capstan head column 4, and pivoted arm 11 can be under
It is upward through the notch and inner ring of pallet, the rim assembly 3 on pallet is held up.Rotation section can be specially motor, arbor with
Capstan head column 4 is connected, and stocking mechanism is equipped with a pickup position, the distance between pickup position and 11 shaft of pivoted arm etc. in the present embodiment
In the distance between shaft and the main shaft 15 of host.Rotation section is connected with capstan head column 4, and capstan head column 4 is driven to rotate, thus
Pallet is set successively to be moved to the rotation section of pickup position.
Optionally, stocking mechanism further includes pedestal 2, and pedestal 2 includes the connecting cylinder being arranged along the vertical direction and is located at connection
Cylinder lower section is in the cabinet of cuboid, and the lower end of capstan head column 4 is connect with connecting cylinder by bearing 20, and rotation section is specially capstan head rotation
Turn servo motor 1, as shown in Figure 1, capstan head rotating servo motor 1 is located at the side of capstan head column 4, and is connected with cabinet.Cabinet
Upper surface be equipped with the perforative via hole of through-thickness, the arbor of capstan head rotating servo motor 1 passes through via hole and protrudes into cabinet, case
Driving section is additionally provided in body, the arbor of connection capstan head rotating servo motor 1 is connected with capstan head column 4 by driving section.Such as Fig. 3 institute
Show, driving section is synchronous belt 21, and arbor drives capstan head column 4 to rotate by synchronous belt 21.Certainly, gear can also be used in driving section
Etc. mechanisms, it is not limited here.
It takes rim assembly 3 for convenience of pivoted arm 11, lifting unit is equipped in stocking mechanism and/or transfer device.Turntable 6 and/
Or pivoted arm 11 moves along the vertical direction under the drive of lifting unit, to enable pivoted arm 11 from bottom to top by 3 support of rim assembly
It rises.
In the present embodiment, stocking mechanism is equipped with lifting unit, as shown in figure 3, lifting unit includes that lead screw 17 and capstan head lifting are watched
Motor 5 is taken, the periphery of capstan head column 4 is equipped with the support key 18 being fixedly connected with turntable 6, and capstan head column 4 is cylindrical in shape, and lead screw 17 is set
It is placed in the inside of capstan head column 4, the inside of capstan head column 4 is additionally provided with the screw 19 matched with lead screw 17, and the side wall of capstan head is set
The through-hole for having through-thickness to run through and axially extending, link block are located in through-hole, both ends respectively with support key 18 and silk
Mother 19 is connected.Capstan head lift servo motor 5 is located at the upper end of capstan head column 4, and arbor is connected with lead screw 17 and drives lead screw 17
It rotates, applies axial active force in 17 rotation process of lead screw to screw 19, and then turntable 6 is driven to move along the vertical direction, most
Hold up pivoted arm 11 by the rim assembly 3 in pallet.
In the present embodiment, stocking mechanism includes capstan head and lifting unit, and the periphery of capstan head is equipped with the support for placing rim assembly 3
Disk, rotation section and lifting unit can drive pallet rotation respectively and move along the vertical direction.Transfer device includes pivoted arm 11 and drives
Dynamic portion, driving portion drive pivoted arm 11 to swing.When transfer device movement rim assembly 3, rotation section is first by be taken 3 turns of rim assembly
It moves to pickup position, turntable 6 is increased above at the position of pivoted arm 11 by lifting unit, and driving portion rotates pivoted arm 11, it is made to hold in the palm hand position
In the underface of stocking mechanism pickup position, lifting unit is dropped below turntable 6 at the position of pivoted arm 11, and pivoted arm 11 will be held in the palm at this time
Rim mechanism on disk is held up, and driving portion rotates pivoted arm 11 again, rim assembly 3 is moved on the main shaft 15 of host.
Optionally, changing rim device further includes control mechanism, and control mechanism and rotation section, driving portion and lifting unit are homogeneous
Even, and control three be automatically performed change wheel rim operation.Control device can be specially single-chip microcontroller, PLC controller etc., specific structure
It can refer to the prior art.
In addition, the also settable capstan head positioning mechanism 7 of stocking mechanism, capstan head positioning mechanism 7 for limit 6 corner of turntable, with
Just pallet and pivoted arm 11 are to positive capstan head positioning mechanism 7.Specifically, as shown in Figure 1, capstan head positioning mechanism 7 is positioned at connecting cylinder
First positioning cylinder of upper end, piston stretching can limit the linking arm on turntable 6, and then can be positioned at turntable 6
Pickup position.
Further, driving portion is pivoted arm servo motor 10, and the two sides of shaft set that there are two pivoted arms to position in transfer device
Mechanism 16, as shown in Fig. 2, pivoted arm positioning mechanism 16 is the second positioning cylinder, the piston of the second positioning cylinder can limit after stretching out
The position of pivoted arm 11.Specifically, the second positioning cylinder is two, pivoted arm 11 can be positioned at the pallet of pivoted arm 11 by one of them
At the position on the main shaft 15 of host, another pallet that pivoted arm 11 can be positioned to pivoted arm 11 is located at stocking mechanism
At the position of pickup position.
In addition, determine host and stocking mechanism position for convenience, change in rim device further include both ends respectively with host
The positioning beam 8 being connected with stocking mechanism.As shown in Figure 1,8 both ends of positioning beam respectively with the pedestal of stocking mechanism 2 and mainframe 9
Lower part is connected, positioning beam 8 can angle and distance between restricting host and stocking mechanism, guarantee that pivoted arm 11 is rocked to extreme position
When, front end can be with the main shaft 15 of host or the pickup position of stocking mechanism to just.
In the present embodiment, stocking mechanism and transfer device are respectively provided with 6 positioning mechanism of capstan head positioning mechanism 7 and turntable,
The two can reduce the control requirement to pivoted arm 11, enables to change rim device and is automatically performed and change wheel rim operation, improves equipment
The degree of automation.It is connected in addition, changing in rim device and being also provided with positioning beam 8, host and stocking mechanism with positioning beam 8
Guarantee that the pickup position of stocking mechanism is located at position appropriate, reduces assembly difficulty.
Before replacement, host is equipped with rim mechanism, and rim device provided by the utility model of changing can be according to the following steps
The operation of replacement rim assembly 3 is completed in movement:
Firstly, upper rim device 12 drops to designated position, it is long that four locking pin shafts are inserted into lower wheel rim ring flange wide opening
In slot.The main shaft 15 of upper rim device 12 inverts 45 degree and arrives upper and lower wheel rim locking position.After locking, upper rim device 12 rises,
Rim assembly 3 is raised to zero point, zero point refers to the highest point that rim device 12 rises.Then, the second positioning cylinder retracts, and turns
Arm 11 rotates to 15, main shaft, and then the second positioning cylinder stretching limits pivoted arm 11.Then upper rim device 12 declines
To at 11 support hand of pivoted arm, grabbing device 13 is opened, and rim assembly 3 is placed on the support of pivoted arm 11 on hand, in upper rim device 12
It is raised to zero point.
Then, the second positioning cylinder retracts, the rotation of pivoted arm 11 to the pickup position of stocking mechanism, the stretching pair of the second positioning cylinder
It is positioned.An empty pallet of stocking mechanism is sitting at the support subordinate side of pivoted arm 11 at this time, and turntable 6 rises to specific bit
It sets, the rim assembly 3 on pivoted arm 11 is held up.
Then, the first positioning cylinder retracts, and stocking mechanism positions the specified rotation of rim assembly 3 to pickup position, first
Cylinder stretching positions turntable 6.Then, turntable 6 drops to specified altitude assignment, and the rim assembly 3 of formulation is placed on pivoted arm
11 support is on hand.
And then, the second positioning cylinder retracts, and 15 top of main shaft of 11 rotation of pivoted arm to host, the second positioning cylinder stretches out
Pivoted arm 11 is limited.Upper rim device 12 drops to specified altitude assignment, rises to zero point after rim assembly 3 is grabbed.Second
Positioning cylinder retracts, and the rotation of pivoted arm 11 to the pickup position of stocking mechanism, the second positioning cylinder stretches out.
Upper rim device 12 drops to 15 height and position of main shaft, and lower wheel rim is placed on main shaft 15, main shaft 15 just going to
Rim assembly 3 is connected to positive position, and with rim assembly 3.Upper wheel rim rises to dead-center position.Changing wheel rim movement terminates.
It should be noted that in the present specification, such as first and second etc relational terms are used merely to one
Entity is distinguished with other several entities, and without necessarily requiring or implying between these entities, there are any this actual
Relationship or sequence.
The rim device of changing of tyre balanee tester provided by the utility model is described in detail above.Herein
In apply specific case the principles of the present invention and embodiment be expounded, the explanation of above embodiments is only used
The method and its core concept of the utility model are understood in help.It should be pointed out that for those skilled in the art
For, without departing from the principle of this utility model, several improvements and modifications can be made to this utility model, these
Improvement and modification are also fallen into the protection scope of the utility model claims.
Claims (10)
1. a kind of tyre balanee tester changes rim device, which is characterized in that including installation rim assembly (3) to be tested
Host, the stocking mechanism positioned at the host side to place rim assembly (3), between the host and the stocking mechanism
Equipped with the transfer device to be moved to rim assembly (3) from the stocking mechanism on the host.
2. according to claim 1 change rim device, which is characterized in that the transfer device include pivoted arm (11) and to
The driving portion for driving the pivoted arm (11) to rotate, the host includes the mainframe (9) being arranged along the vertical direction, the pivoted arm
(11) mainframe (9) is installed in towards the side of the stocking mechanism, is used on the driving portion and the mainframe (9)
Install the pivoted arm (11) shaft be connected, main shaft and the storage to drive the pivoted arm (11) in the mainframe (9)
The pickup interdigit of mechanism is mobile.
3. according to claim 2 change rim device, which is characterized in that the stocking mechanism include capstan head column (4) and
It is sheathed on the turntable (6) of capstan head column (4) periphery, the company that the turntable (6) extends radially outward at least provided with two
Connect arm, the end of the every linking arm is equipped with the pallet to place rim assembly (3), and the stocking mechanism further includes and institute
Capstan head column (4) are stated to be connected, for driving the capstan head column (4) to rotate, so that the pallet is successively moved to the pickup
The rotation section of position.
4. according to claim 3 change rim device, which is characterized in that the stocking mechanism further includes pedestal (2), described
The lower end of capstan head column (4) is connected with the pedestal (2), and the rotation section is capstan head rotating servo motor (1), the capstan head rotation
Turn the side that servo motor (1) is located at the capstan head column (4), to be equipped in the pedestal (2) and connect the capstan head rotating servo
The driving section of motor (1) and the capstan head column (4).
5. according to claim 4 change rim device, which is characterized in that the stocking mechanism is equipped with to go up and down described turn
The lifting unit and/or the transfer device of disk (6) are equipped with to go up and down the lifting unit of the pivoted arm (11), so that the transfer
Structure can hold up rim assembly (3).
6. according to claim 5 change rim device, which is characterized in that the stocking mechanism is equipped with the lifting unit, institute
Stating lifting unit includes lead screw (17) and the capstan head lift servo motor (5) to rotate the lead screw (17), the capstan head column
(4) periphery is equipped with the support key (18) being connected with the turntable (6), and the lead screw (17) is set to the capstan head column (4)
Inside, the lead screw (17) are connected with the support key (18) by screw (19).
7. according to claim 6 change rim device, which is characterized in that the capstan head lift servo motor (5) is located at institute
State the upper end of capstan head column (4).
8. according to claim 7 change rim device, which is characterized in that the stocking mechanism is equipped with for limiting described turn
Disk (6) corner, so that the pallet and the pivoted arm (11) are to positive capstan head positioning mechanism (7).
9. according to claim 8 change rim device, which is characterized in that the driving portion is pivoted arm servo motor (10),
The transfer device is set there are two pivoted arm positioning mechanism (16), and the pivoted arm (11) can be positioned at the pivoted arm respectively by the two
(11) front end is located above the main shaft of the host and the pickup position of the stocking mechanism.
10. changing rim device according to claim 2 to 9 any one, which is characterized in that further include both ends respectively with institute
The positioning beam (8) that host is connected with the stocking mechanism is stated, when the positioning beam (8) connect the host and the storage machine
Structure, and when the pivoted arm (11) is rocked to extreme position, the front end of the pivoted arm (11) and main shaft or the storage of the host
The pickup position of mechanism is deposited to just.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920781173.XU CN209727348U (en) | 2019-05-27 | 2019-05-27 | A kind of tyre balanee tester changes rim device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920781173.XU CN209727348U (en) | 2019-05-27 | 2019-05-27 | A kind of tyre balanee tester changes rim device |
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| Publication Number | Publication Date |
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| CN209727348U true CN209727348U (en) | 2019-12-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031150A (en) * | 2019-05-27 | 2019-07-19 | 软控股份有限公司 | A kind of tyre balanee tester changes rim device |
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2019
- 2019-05-27 CN CN201920781173.XU patent/CN209727348U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031150A (en) * | 2019-05-27 | 2019-07-19 | 软控股份有限公司 | A kind of tyre balanee tester changes rim device |
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