CN221198284U - Tool for measuring play of hub unit - Google Patents

Abstract

The utility model belongs to the technical field of hubs, and particularly relates to a clearance measurement tool for a hub unit. The roll-over stand is located the inside of mount in this frock, the outside middle part and the upper end lateral wall swing joint of mount of roll-over stand, lower extreme lateral wall of mount inserts and establishes fixedly with bolt C, the upper end of roll-over stand, the lower extreme of roll-over stand all can be dismantled with bolt C in the upset in-process and be connected, the inside of roll-over stand is provided with the diaphragm, the top of diaphragm is provided with the central siphon, the outside threaded connection of central siphon has the nut, the outside cover of central siphon is equipped with the hub unit of awaiting measuring, the lateral wall of central siphon and the inside wall butt of the hub unit of awaiting measuring, the locking force of the hub unit of awaiting measuring is adjusted in the nut down tightening, both sides all can dismantle through bolt E and be connected with the amesdial, the table pole of amesdial is laminated with the lateral wall of the hub unit of awaiting measuring. The tool can rapidly measure the play value of the hub unit, and is accurate and reliable.

Description

Tool for measuring play of hub unit

Technical Field

The utility model belongs to the technical field of hubs, and particularly relates to a clearance measurement tool for a hub unit.

Background

The bearing of the hub unit has play to ensure that the bearing can flexibly operate without blocking, but if the play of the bearing is too large, the rotating precision of the bearing can be influenced, and if the play of the bearing is too small, the bearing is easy to be blocked, so that the play value of the bearing needs to be measured, and the normal operation and the production quality of the hub unit are ensured.

The existing clearance detection machine for the hub unit bearing is pushed by an air cylinder, the pressure of the air cylinder cannot be accurately controlled and regulated, only one group of clearance value data of the upper limit position and the lower limit position can be measured, and then the measured clearance value of the hub unit bearing is inaccurate and unreliable.

For example, chinese patent publication No. CN213515570U discloses a hub unit bearing axial play measuring machine, which includes the steps of first, executing step S1, and placing a hub unit bearing to be measured in a positioning seat. And then, executing step S2, starting the compressing assembly to compress the outer ring of the hub unit bearing to be tested. Next, step S3 is executed, the second driving motor and the second working cylinder are started, and after the starting time reaches the first preset time, the second driving motor is turned off, and the first displacement amount (the limit displacement amount of the upward movement of the inner ring of the hub unit bearing) of the displacement sensor is obtained. Then, step S4 is executed, the first driving motor and the first working cylinder are started, the pressure of the first working cylinder is twice that of the second working cylinder, and after the starting time reaches the second preset time, the second driving motor is turned off, and the second displacement (the limit displacement of the downward movement of the inner ring of the hub unit bearing) of the displacement sensor is obtained. Finally, step S5 is executed to obtain an axial play value, where the axial play value is the difference between the first displacement and the second displacement. It can be seen that when the play value of the hub unit bearing is measured, the pressure of the first working cylinder and the pressure of the second working cylinder cannot be accurately controlled and regulated, and only one set of play value data of the upper limit position and the lower limit position can be measured, so that the measured play value of the hub unit bearing is not accurate and reliable.

Disclosure of utility model

The utility model provides a clearance measurement tool for a hub unit, which solves the problems.

The technical scheme of the utility model is realized as follows:

A play measurement tool of a hub unit comprises a fixed frame and a roll-over stand; the turnover frame is positioned in the fixing frame, the middle part of the outer side of the turnover frame is movably connected with the side wall of the upper end of the fixing frame, a bolt C is inserted and fixed on the side wall of the lower end of the fixing frame, the upper end of the turnover frame is positioned outside the fixing frame, the lower end of the turnover frame is positioned in the fixing frame, and the upper end of the turnover frame and the lower end of the turnover frame can be detachably connected with the bolt C in the turnover process; the inside of roll-over stand is provided with the diaphragm, the top of diaphragm is provided with the central siphon, the outside threaded connection of central siphon has the nut, the outside cover of central siphon is equipped with the wheel hub unit of awaiting measuring, the lateral wall of central siphon and the inside wall butt of wheel hub unit of awaiting measuring, the locking force of the wheel hub unit of awaiting measuring is adjusted in the nut down tightening, both sides all can be dismantled through bolt E and be connected with the amesdial around the diaphragm, the table pole of amesdial is laminated with the lateral wall of the wheel hub unit of awaiting measuring.

Through the technical scheme, the outer side wall of the shaft tube is abutted with the inner side wall of the hub unit, so that the hub unit to be tested can be synchronously turned over by the shaft tube and the turning frame, the turning frame can turn over 180 degrees relative to the fixed frame and is fixed through the bolt C after the turning is finished, the turning frame is stable, the hub unit is enabled to be turned upside down by driving the hub unit through the shaft tube and the transverse plate, the play values of the hub unit under different locking forces are measured before and after the turning over by the dial indicators, the two measurement data of the dial indicators are compared by measuring the play values of the hub unit measured simultaneously before and after the turning over, and the measurement data of the play values of the hub unit are more accurate and reliable.

Optionally, the mount is the U type, the mount includes bottom plate and two curb plates, two the curb plate is vertical to be placed and parallel interval sets up, both ends about the bottom plate respectively with two the lower extreme fixed connection of curb plate, both sides are fixed connection has two parallel interval sets's fixed plate respectively around the bottom plate, insert from top to bottom the fixed plate and establish and be fixed with bolt A, bolt A is used for fixing the mount, and the upper and lower both ends of curb plate are inserted respectively and are fixed with bolt B, bolt C, bolt B with the outside middle part swing joint of roll-over stand.

Through above-mentioned technical scheme, the cooperation of fixed plate and bolt A for the mount can be installed on ground or specific workstation according to the user demand, and is more nimble on the use, also more stable, and bolt B and roll-over stand's outside swing joint also can improve the flexibility of roll-over stand in the upset in-process, simple structure, convenient operation is swift.

Optionally, the roll-over stand is the H type, the roll-over stand includes two parallel interval setting's connecting plate, two the connecting plate is vertical to be set up, two fixedly connected with between the connecting plate the diaphragm, the slide rail is all installed to both sides around the diaphragm, the slide rail passes through bolt E and can dismantle and be connected with the amesdial.

Through above-mentioned technical scheme, the roll-over stand is the H type, simple structure can guarantee the stability in the upset in-process again, and the setting of slide rail also can make things convenient for the position to install between amesdial and the diaphragm, and can keep the amesdial to adjust the position on same horizontal line all the time, improves the stability and the accuracy of amesdial installation.

Optionally, the outside upper end of connecting plate the outside lower extreme of connecting plate is all fixedly connected with connecting portion B, fixedly connected with connecting portion A in the middle of the outside of connecting plate, connecting portion A is located upper and lower two connecting portion B's centre, bolt B's tip can be inserted in connecting portion A, bolt B with connecting portion A swing joint, bolt C's tip is inserted in connecting portion B carries out fixed connection, the roll-over stand is round bolt B overturns, through bolt C with mount fixed connection after the roll-over stand upset is accomplished.

Through above-mentioned technical scheme, connecting portion A can cooperate with bolt B, realizes carrying out relative rotation between roll-over stand and the mount for the roll-over stand can overturn for the mount, and bolt C can improve the roll-over stand and still keep vertical state after the upset is ended, and keep stable with the mount between, do not take place to rock.

Optionally, the top fixedly connected with tool table of diaphragm, the lower extreme bottom fixedly connected with mounting panel of central siphon, the mounting panel with central siphon integrated into one piece, the mounting panel pass through bolt D with tool table fixed connection.

Through above-mentioned technical scheme, the mounting panel can cooperate with bolt D, realizes keeping stable connection fixed relation between central siphon and the tool table, and then improves the fastness and the stability of being connected between central siphon and the diaphragm.

Optionally, a groove is formed in the top of the transverse plate, and the tooling table is located in the groove.

Through above-mentioned technical scheme, the recess can improve the fastness and the stability of being connected between tool table and the diaphragm.

Optionally, the outer diameter of the upper end of the shaft tube is larger than the outer diameter of the middle part of the shaft tube, the outer diameter of the middle part of the shaft tube is larger than the outer diameter of the lower end of the shaft tube, and the outer diameter of the middle part of the shaft tube gradually increases from top to bottom to be the same as the outer diameter of the lower end of the shaft tube.

Through above-mentioned technical scheme, the change of central siphon external diameter can with the inside structure phase-match of hub bearing, is favorable to the better butt of going on of lateral wall and hub bearing's of central siphon inside wall, improves hub bearing and measures the accuracy of play value.

Optionally, the outside upper end of central siphon is provided with bulge loop B, the outside lower extreme of central siphon is provided with bulge loop A, bulge loop B's diameter is less than the internal diameter of bearing B in the hub unit that awaits measuring, and bearing B's inner circle butt is in bulge loop A's up end in the hub unit that awaits measuring, bearing A's inner circle butt is in bulge loop B's lateral wall in the hub unit that awaits measuring.

Through the technical scheme, the convex ring B can be abutted with the bearing A, and the convex ring A can be abutted with the bearing B, so that the hub unit is kept stable, the use condition of the hub unit in the actual working process is simulated, and the play value of the hub unit is accurately and reliably measured.

Optionally, a connecting column is inserted and fixed in the upper part of the shaft tube, and the connecting column is located above the convex ring B. The nut is connected to the outer side of the connecting column in a threaded mode, a gasket is sleeved on the outer side of the connecting column, and the gasket is located between the nut and a bearing A in the hub unit to be tested.

Through above-mentioned technical scheme, the cooperation of spliced pole with nut, gasket for can exert different locking force to the wheel hub unit through nut and gasket, thereby simulate the locking force that the wheel hub unit received in the in-service use, improve accuracy and the reliability of measuring wheel hub unit play value.

Optionally, the height of the fixing frame is greater than one half of the height of the roll-over stand.

Through above-mentioned technical scheme, the high relation between mount and the roll-over stand can guarantee that the roll-over stand can not cause the interference to the roll-over stand in the upset process, ensures the smoothness of roll-over stand upset process.

After the technical scheme is adopted, the utility model has the beneficial effects that:

In the measuring tool, the hub unit is fixed by the roll-over stand through the shaft tube, and the roll-over stand drives the hub unit to synchronously roll over relative to the fixing frame, so that the detection of the play and the starting force of the hub unit can be rapidly realized. The problem that the existing bearing clearance detection is difficult is solved, through measuring the clearance value of the hub unit under different locking forces of the nut, the clearance value data of the hub unit under different locking forces can be measured, and the clearance value measurement data of the hub unit is more accurate and reliable.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a perspective view I of the mounting bracket, roll-over stand and hub unit in the mounted and mated state in the embodiment;

Fig. 2 is a schematic view of the structure of the roll-over stand in the embodiment in a separated state of the hub unit;

FIG. 3 is a bottom view of the mounting bracket, roll-over stand and hub unit in an assembled condition in the embodiment;

FIG. 4 is a cross-sectional view of the embodiment in a mounted and mated state of the axle tube and the hub unit;

FIG. 5 is a perspective view II of the mounting bracket, the roll-over stand and the hub unit in the mounted and engaged state in the embodiment;

FIG. 6 is an enlarged view at A in FIG. 5;

Fig. 7 is a schematic structural view of the roll-over stand in a state that the hub unit is turned upside down by the roll-over stand in the embodiment.

Reference numerals illustrate: 1. a fixing frame; 2. a roll-over stand; 3. a tooling table; 4. a slide rail; 5. a dial gauge; 6. a shaft tube; 7. a hub unit; 8. a screw; 9. a nut; 11. a bottom plate; 12. a bolt A; 13. a side plate; 14. a bolt B; 15. a bolt C; 21. a connection part A; 22. a connecting part B; 23. a cross plate; 24. a connecting plate; 31. a bolt D; 111. a fixing plate; 51. a watch bar; 52. a bolt E; 61. a convex ring A; 62. a convex ring B; 63. a mounting plate; 64. a connecting column; 71. a hub; 72. a flange; 73. a bearing A; 74. a bearing B; 91. a gasket.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment of the application discloses a clearance measurement tool for a hub unit.

Examples

According to the illustrated fig. 1 to 7, a play measuring tool for a hub unit comprises a fixing frame 1 and a roll-over stand 2, wherein the roll-over stand 2 is positioned in the fixing frame 1, and the height of the fixing frame 1 is greater than one half of the height of the roll-over stand 2. One end of the roll-over stand 2 is detachably connected with the side wall of the fixed frame 1 through a bolt C15, the other end of the roll-over stand 2 is positioned outside the fixed frame 1, and the middle part of the roll-over stand 2 is movably connected with the side wall of the fixed frame 1.

The fixing frame 1 is U-shaped, and the fixing frame 1 includes bottom plate 11 and two curb plates 13, and bottom plate 11 level is placed, and two curb plates 13 are vertical to be placed and parallel interval setting, and bottom plate 11's both ends are respectively with the lower extreme fixed connection of two curb plates 13 about. Two fixing plates 111 which are arranged in parallel at intervals are fixedly connected to the front side and the rear side of the bottom plate 11 respectively, bolts A12 are inserted and fixed up and down into the fixing plates 111, the bolts A12 are used for fixing the fixing frame 1, and the fixing frame 1 can be installed on the ground or a workbench. Bolts B14 and C15 are inserted and mounted at the upper and lower ends of the side plate 13.

The roll-over stand 2 is H type, and roll-over stand 2 includes two parallel interval setting's connecting plate 24, and two connecting plates 24 vertical setting are connected with diaphragm 23 between two connecting plates 24 fixedly. The connecting part B22 is fixedly connected to the outer upper end of the connecting plate 24 and the outer lower end of the connecting plate 24, the connecting part A21 is fixedly connected to the middle of the outer side of the connecting plate 24, and the connecting part A21 is positioned between the upper connecting part B22 and the lower connecting part B22. The connecting portion A21 is matched with the bolt B14, the end portion of the bolt B14 can be inserted into the connecting portion A21, the bolt B14 is movably connected with the connecting portion A21, and the turnover frame 2 can be turned up and down by taking the bolt B14 as a rotating shaft. The connecting portion B22 is matched with the bolt C15, and the end portion of the bolt C15 is inserted into the connecting portion B22 for fixed connection. The bolt C15 is fixed with the connecting part B22, so that the fixed limit of the roll-over stand 2 is realized. The connecting parts A21 are movably connected with the side wall of the fixing frame 1 through bolts B14, and one connecting part B22 is detachably connected with the side wall of the fixing frame 1 through bolts C15. One end of the connecting plate 24 is positioned inside the fixing frame 1, the other end of the connecting plate 24 is positioned outside the fixing frame 1, the turnover frame 2 turns around the bolt B14, and the turnover frame 2 is fixedly connected with the fixing frame 1 through the bolt C15 after turning.

The top of diaphragm 23 is provided with the recess, fixedly connected with tool table 3 in the recess, and the top of tool table 3 can be dismantled through bolt D31 and be connected with central siphon 6, and the lower extreme bottom fixedly connected with mounting panel 63 of central siphon 6, mounting panel 63 and central siphon 6 integrated into one piece, mounting panel 63 pass through bolt D31 and tool table 3 fixed connection. The external diameter of the upper end of the shaft tube 6 is larger than the external diameter of the middle part of the shaft tube 6, the external diameter of the middle part of the shaft tube 6 is larger than the external diameter of the lower end of the shaft tube 6, and the external diameter of the middle part of the shaft tube 6 gradually increases from top to bottom to be the same as the external diameter of the lower end of the shaft tube 6. The outside cover of central siphon 6 is equipped with the wheel hub unit 7 that awaits measuring, and wheel hub unit 7 includes wheel hub 71, bearing A73, bearing B74, and the outer lane interference fit of bearing A73, bearing B74 is at the inside wall of wheel hub 71, and the inner circle of bearing A73, the inner circle butt of bearing B74 is at the outside wall of central siphon 6. The upper end of the outer side of the shaft tube 6 is provided with a convex ring B62, the lower end of the outer side of the shaft tube 6 is provided with a convex ring A61, and the convex ring A61 and the convex ring B62 are formed by outwards extending the outer side wall of the shaft tube 6. The diameter of the convex ring B62 is smaller than the inner diameter of the bearing B74, the hub unit 7 can be installed and sleeved on the outer side of the shaft tube 6 from bottom to top, the inner ring of the bearing B74 is abutted against the upper end surface of the convex ring A61, and the inner ring of the bearing A73 is abutted against the outer side wall of the convex ring B62.

A connecting column 64 is inserted and fixed in the upper part of the shaft tube 6, and the connecting column 64 is positioned above the convex ring B62. The outside threaded connection of spliced pole 64 has nut 9, and the outside cover of spliced pole 64 is equipped with gasket 91, and gasket 91 is located between nut 9 and bulge loop B62, and gasket 91 contacts with the terminal surface of wheel hub unit 7, adjusts the locking force of wheel hub unit 7 through the tightening force of adjusting nut 9. The gasket 91 is located between the nut 9 and the bearing a73, and the nut 9 drives the gasket 91 to press down on the upper end surface of the inner ring of the bearing a73 through tightening, so that the hub unit 7 is fixed, and the hub unit 7 fixed on the shaft tube 6 can be turned up and down along with the rotation of the roll-over stand 2.

The front side and the rear side of the transverse plate 23 are fixedly connected with sliding rails 4, the sliding rails 4 are detachably connected with dial indicators 5 through bolts E52, the meter rods 51 of the dial indicators 5 are attached to the outer side walls of the hub unit 7 to be measured, and the positions of the dial indicators 5 can be adjusted according to the position requirements of actual measurement. The measurement by the two dial indicators 5 makes the measurement result more reliable. Dial indicator 5 is prior art and is therefore not described in any way too much.

The outer side wall of the shaft tube 6 is abutted with the inner side wall of the hub unit 7, so that the hub unit 7 to be tested can be synchronously turned over by the shaft tube 6 and the turning frame 2, the turning frame 2 can turn over 180 degrees relative to the fixed frame 1 and is fixed by a bolt C15 after the turning is finished, the turning frame 2 drives the hub unit 7 to synchronously turn over by the shaft tube 6 and the transverse plate 23, the hub unit 7 is inverted, the play values of the hub unit 7 under different locking forces before and after the inversion are measured by the dial indicators 5, the comparison is carried out by measuring the measured data of the dial indicators 5 twice before and after the turning over, and the play values of the hub unit 7 are measured by the two dial indicators 5 at the same time, so that the measured data of the play values of the hub unit 7 are more accurate and reliable. The height relation between the fixing frame 1 and the roll-over stand 2 can ensure that the fixing frame 1 can not interfere the roll-over stand 2 in the roll-over process, and ensure the smoothness of the roll-over process of the roll-over stand 2.

The cooperation of fixed plate 111 and bolt A12 for mount 1 can be installed on ground or specific workstation according to the user demand, and is more nimble in the use, also more stable, and bolt B14 and roll-over stand 2's outside swing joint also can improve roll-over stand 2 in the flexibility of upset in-process, simple structure, convenient operation is swift. The roll-over stand 2 is H type, simple structure can guarantee the stability in the upset in-process again, and the setting of slide rail 4 also can make things convenient for the position to install between amesdial 5 and the diaphragm 23, and can keep amesdial 5 to adjust the position on same horizontal line all the time, improves amesdial 5 installation's stability and accuracy. The connecting portion A21 can be matched with the bolt B14, so that relative rotation between the roll-over stand 2 and the fixing frame 1 is achieved, the roll-over stand 2 can roll over relative to the fixing frame 1, the bolt C15 can improve the state that the roll-over stand 2 still keeps vertical after finishing rolling over, and the roll-over stand is stable with the fixing frame 1 and does not shake.

The mounting plate 63 can be matched with the bolt D31, so that stable connection and fixing relation between the shaft tube 6 and the tool table 3 is kept, and further the connection firmness and stability between the shaft tube 6 and the transverse plate 23 are improved. The groove can improve the firmness and stability of the connection between the tooling table 3 and the transverse plate 23. The change of the external diameter of the shaft tube 6 can be matched with the internal structure of the hub 71 bearing, so that the outer side wall of the shaft tube 6 is better abutted with the inner side wall of the hub 71 bearing, and the accuracy of the measurement clearance value of the hub 71 bearing is improved. The convex ring B62 can be abutted against the bearing a73, and the convex ring a61 can be abutted against the bearing B74, so that the hub unit 7 is kept stable, and the use condition of the hub unit 7 in the actual working process is simulated, so that the play value of the hub unit 7 is accurately and reliably measured. The cooperation of the connecting column 64 with the nut 9 and the gasket 91 allows different locking forces to be applied to the hub unit 7 through the nut 9 and the gasket 91, so that the locking force applied to the hub unit 7 in the actual use process is simulated, and the accuracy and reliability of measuring the play value of the hub unit 7 are improved.

Working principle:

The dial indicator 5 is moved until the dial indicator rod 51 is attached to the side wall of the hub unit 7 (i.e. attached to the side wall of the hub 71), and the dial indicator 5 is locked on the slide rail 4 by the bolt E52, and at this time, the indication number on the dial indicator 5 is a reference number.

The roll-over stand 2 is turned over, the roll-over stand 2 is fixed through the bolts C15, the hub unit 7 is turned upside down along with the roll-over stand 2, as shown in fig. 7, because of the play between the bearing A73 and the bearing B74 of the hub unit 7, the inner ring and the outer ring of the bearing A73 and the bearing B74 can relatively move up and down, when the hub unit 7 is turned upside down, the hub 71 can downwardly move for a certain distance, the gauge rod 51 is attached to the side wall of the hub unit 7 and moves along with the displacement of the hub 71, at the moment, the indication on the dial indicator 5 is observed, and the play value of the hub unit 7 can be calculated according to the twice measured data.

The hub unit 7 comprises a flange 72, the flange 72 is positioned at the upper part of the hub unit 7, the flange 72 is provided with a plurality of screws 8, the locking force of the nuts 9 can be adjusted through a torque wrench, the play value and the starting force of the hub unit 7 can be influenced due to different locking forces of the nuts 9 when the hub unit 7 is locked, and the play value can be correspondingly reduced but the starting force can be correspondingly increased as the nuts 9 are screwed more tightly.

Through connect tension spring and rotate hub unit 7 on screw rod 8, alright measure the actuating force of hub unit 7 under corresponding locking force when hub unit 7 just rotates, the actuating force of hub unit 7 is an important index when hub unit 7 is assembled, selects suitable hub unit 7 actuating force, realizes the regulation of hub unit 7 actuating force size through adjusting hub unit 7's locking force to select the suitable actuating force of hub unit 7, can prolong hub unit 7's life greatly.

Meanwhile, under different locking forces, the play value of the hub unit 7 can also be changed, the play value of the hub unit 7 under different locking forces of the nut 9 can be measured by adjusting the locking force of the nut 9 through the torque wrench, and play value data of the hub unit 7 under different locking forces can be measured, so that play value measurement data of the hub unit 7 are more accurate and reliable. The play value of the hub unit 7 during installation is required to be selected within a certain range, specifically, the play value of the hub unit 7 (according to the data corresponding to the play value of the locking force measured before) can be adjusted by adjusting the proper locking force through a torque wrench during installation, so that the hub unit 7, namely the bearing A73 and the bearing B74 of the hub unit 7 can be flexibly operated without blocking, and the service life of the hub unit 7 is further prolonged.

In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. In the description of the present utility model, unless otherwise specified and defined, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanical or electrical, or may be in communication with each other between two elements, directly or indirectly through intermediaries, as would be understood by those skilled in the art, in view of the specific meaning of the terms described above.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. The utility model provides a frock is measured to wheel hub unit's play which characterized in that: comprises a fixed frame and a roll-over stand; the turnover frame is positioned in the fixing frame, the middle part of the outer side of the turnover frame is movably connected with the side wall of the upper end of the fixing frame, a bolt C is inserted and fixed on the side wall of the lower end of the fixing frame, the upper end of the turnover frame is positioned outside the fixing frame, the lower end of the turnover frame is positioned in the fixing frame, and the upper end of the turnover frame and the lower end of the turnover frame can be detachably connected with the bolt C in the turnover process;

The inside of roll-over stand is provided with the diaphragm, the top of diaphragm is provided with the central siphon, the outside threaded connection of central siphon has the nut, the outside cover of central siphon is equipped with the wheel hub unit of awaiting measuring, the lateral wall of central siphon and the inside wall butt of wheel hub unit of awaiting measuring, the locking force of the wheel hub unit of awaiting measuring is adjusted in the nut down tightening, both sides all can be dismantled through bolt E and be connected with the amesdial around the diaphragm, the table pole of amesdial is laminated with the lateral wall of the wheel hub unit of awaiting measuring.

2. The play measurement tool of a hub unit according to claim 1, wherein: the fixing frame is U-shaped, the fixing frame includes bottom plate and two curb plates, two the curb plate is vertical to be placed and parallel interval sets up, both ends are about the bottom plate respectively with two the lower extreme fixed connection of curb plate, both sides are fixed with two fixed plates of parallel interval sets up respectively around the bottom plate, insert from top to bottom and establish fixed with bolt A, bolt A is used for fixing the fixing frame, and upper and lower both ends of curb plate are inserted respectively and are fixed with bolt B, bolt C, bolt B with the outside middle part swing joint of roll-over stand.

3. The play measurement tool of a hub unit according to claim 2, wherein: the roll-over stand is the H type, the roll-over stand includes two parallel interval setting's connecting plate, two the connecting plate is vertical to be set up, two fixedly connected with between the connecting plate the diaphragm, the slide rail is all installed to both sides around the diaphragm, the slide rail can be dismantled through bolt E and be connected with the amesdial.

4. A play measurement tool for a hub unit according to claim 3, wherein: the upper end of the outer side of the connecting plate and the lower end of the outer side of the connecting plate are fixedly connected with a connecting part B, the middle of the outer side of the connecting plate is fixedly connected with a connecting part A, the connecting part A is positioned between the upper connecting part B and the lower connecting part B, the end part of the bolt B can be inserted into the connecting part A, the bolt B is movably connected with the connecting part A, the end part of the bolt C is inserted into the connecting part B for fixed connection, the roll-over stand turns around the bolt B, and the roll-over stand is fixedly connected with the fixing frame through the bolt C after turning over.

5. A play measurement tool for a hub unit according to claim 3, wherein: the top fixedly connected with tool table of diaphragm, the lower extreme bottom fixedly connected with mounting panel of central siphon, the mounting panel with central siphon integrated into one piece, the mounting panel pass through bolt D with tool table fixed connection.

6. The play measurement tool of a hub unit according to claim 5, wherein: the top of diaphragm is provided with the recess, the tool table is located in the recess.

7. The play measurement tool of a hub unit according to claim 1, wherein: the outer diameter of the upper end of the shaft tube is larger than that of the middle part of the shaft tube, the outer diameter of the middle part of the shaft tube is larger than that of the lower end of the shaft tube, and the outer diameter of the middle part of the shaft tube gradually increases from top to bottom to be the same as that of the lower end of the shaft tube.

8. The play measurement tool of a hub unit according to claim 7, wherein: the outer upper end of the shaft tube is provided with a convex ring B, the outer lower end of the shaft tube is provided with a convex ring A, the diameter of the convex ring B is smaller than the inner diameter of a bearing B in a hub unit to be tested, the inner ring of the bearing B in the hub unit to be tested is abutted to the upper end face of the convex ring A, and the inner ring of the bearing A in the hub unit to be tested is abutted to the outer side wall of the convex ring B.

9. The play measurement tool of a hub unit according to claim 8, wherein: the connecting column is fixedly inserted into the upper part of the shaft tube, the connecting column is located above the convex ring B, the nut is connected with the outer side of the connecting column in a threaded mode, a gasket is sleeved on the outer side of the connecting column, and the gasket is located between the nut and a bearing A in a hub unit to be tested.

10. The play measurement tool of a hub unit according to claim 1, wherein: the height of the fixing frame is greater than one half of the height of the roll-over stand.