CN221077589U - Detection tool for hub brake drum assembly - Google Patents

Abstract

The utility model provides a detection tool for a hub brake drum assembly, which comprises an installation rack, a positioning mandrel, an auxiliary supporting shaft and a detection assembly. Wherein, be provided with a plurality of rollers of setting side by side on the installation rack to make wheel hub can remove on the roller. The locating hole has been seted up at the top of location dabber, and the periphery is provided with first rotating member to when the axial displacement of location dabber, first rotating member can support in wheel hub's centre bore. The auxiliary support shaft is downwards arranged in the positioning hole in a penetrating mode, a second rotating piece is arranged on the outer peripheral side of the auxiliary support shaft and can be propped against the inner wall of the central hole, and therefore the hub can rotate relative to the positioning mandrel and the auxiliary support shaft. One end of the detection component is connected to the top of the auxiliary supporting shaft, and the other end of the detection component is used for propping against the braking surface so as to detect the distance between the center hole and the rotating axis of the hub, and further obtain the runout tolerance of the braking surface.

Description

Detection tool for hub brake drum assembly

Technical Field

The utility model relates to the technical field of hub detection, in particular to a detection tool for a hub brake drum assembly.

Background

In recent years, the control requirements of the market on the quality of products are gradually increasing, and in particular, the quality of the products is strictly required on automobile hubs. For example, the tolerance of the hub assembly has a large influence on the quality of the whole vehicle, and the problems of out-of-tolerance of the dynamic balance amount, vehicle running shake and the like are easily generated. Therefore, in the process of mass production of the hub, after the hub and the brake drum are assembled, assembly accuracy between the hub and the brake drum needs to be detected, and a brake face runout tolerance of the hub brake assembly needs to be detected, so that the runout tolerance is ensured to be within a safe range.

However, in the existing hub brake drum assembly runout detection tool, a flat plate is fixed on the ground, a runout detection mandrel is fixed on the flat plate, and when in detection, the hub brake drum assembly is hoisted, placed on the detection mandrel, and rotated, and the runout tolerance of the brake surface of the hub brake assembly is detected. The detection mode is inconvenient to operate, has low detection efficiency, and is difficult to meet the detection requirement of mass production.

Disclosure of utility model

The utility model aims to provide a detection tool for a hub brake drum assembly, which can be used for rapidly detecting a braking surface of the hub brake drum assembly so as to improve the detection efficiency of the tool.

In order to solve the technical problems, the utility model adopts the following technical scheme:

A detection frock of wheel hub brake drum assembly for detect the tolerance of beating of wheel hub's braking surface, detect the frock and include: a mounting rack on which a plurality of rollers are provided; a plurality of rollers rotatably connected to the mounting rack about a transverse axis and extending longitudinally such that the hub is longitudinally movable on the rollers; the positioning mandrel is arranged on the mounting rack and extends vertically; the top of the positioning mandrel is provided with a positioning hole and a first rotating piece; the first rotating piece is sleeved on the periphery of the positioning mandrel and can rotate around the positioning mandrel; the positioning mandrel can move upwards and penetrate through the central hole of the hub, and the first rotating piece abuts against the inner peripheral wall of the central hole so that the hub can rotate relative to the positioning mandrel; the positioning hole is formed in the upper end of the positioning mandrel, and the axis of the positioning hole is coincident with the axis of the first rotating piece; the auxiliary supporting shaft is used for penetrating downwards into the positioning hole; the auxiliary supporting shaft is provided with a second rotating piece, and the second rotating piece is arranged on the periphery of the auxiliary supporting shaft and props against the inner peripheral wall of the central hole so that the hub can rotate relative to the auxiliary supporting shaft; the second rotating piece is positioned above the first rotating piece; and one end of the detection assembly is connected to one end of the auxiliary support shaft, which is far away from the positioning mandrel, and the other end of the detection assembly is used for propping against the braking surface so as to be used for detecting the distance between the braking surface and the rotating axis of the hub.

In one embodiment of the application, a plurality of auxiliary roller groups are arranged on the mounting rack; the auxiliary roller groups are distributed around the axis in the vertical direction and are matched with the bottom of the central hole, so that the auxiliary roller groups can be supported at the bottom of the hub; the top of the auxiliary roller set is kept flush with the top of the roller so that the hub can move between the roller and the auxiliary roller set.

In one embodiment of the application, the auxiliary roller group is provided with an auxiliary bracket and two rollers; the auxiliary bracket is fixedly connected to the mounting rack; the axis of gyro wheel is along transversely extending, and two the gyro wheel is coaxial to be set up, and rotate to be connected on the auxiliary stand, so that the gyro wheel can follow self axis relative the auxiliary stand rotates.

In one embodiment of the application, the detection tool further comprises a driving assembly for driving the positioning mandrel to move; the driving assembly is connected between the mounting rack and the bottom of the positioning mandrel, so that the positioning mandrel can be driven to move along the vertical direction.

In one embodiment of the application, the drive assembly includes a connecting plate, a drive cylinder, a mounting plate, and a guide post; the connecting plate is fixed on the mounting rack and is positioned below the roller; the connecting plate is provided with a guide hole matched with the guide post so that the guide post can slide relative to the connecting plate through the guide hole; the top of the mounting plate is connected with a positioning mandrel; the top end of the guide post is connected with the mounting plate, and the bottom end of the guide post is arranged in the guide hole in a penetrating way; the driving cylinder is connected between the connecting plate and the mounting plate, so as to drive the mounting plate and the positioning mandrel to move.

In one embodiment of the application, the detection tool further comprises a control unit, a photoelectric switch and a foot switch; the control unit is electrically connected with the driving cylinder, the photoelectric switch and the foot switch; the photoelectric switch is arranged on the mounting rack and is positioned above the positioning mandrel, so that when the hub moves to a specific position above the positioning mandrel, the photoelectric switch can control the driving cylinder to operate and drive the positioning mandrel to move axially; the foot switch is positioned at the side edge of the mounting rack so as to control the driving cylinder to move downwards.

In one embodiment of the present application, the detection tool further includes a positioning device; the alignment device is arranged on the mounting rack and is positioned above the positioning mandrel so as to align the hub to a specific position above the positioning mandrel.

In one embodiment of the present application, the first rotating member and the second rotating member are inclined bearings, so that the hub can rotate relative to the first rotating member and the second rotating member after the first rotating member and the second rotating member respectively abut against the central hole.

In one embodiment of the present application, the auxiliary supporting shaft is provided with a positioning shaft portion and a handle portion; the positioning shaft part is used for penetrating the positioning hole; the handle portion is disposed between the positioning shaft portion and the handle portion and above the second rotating member so as to be able to lift the auxiliary supporting shaft through the handle portion.

In one embodiment of the application, the auxiliary supporting shaft is provided with a connecting part; the connecting portion is arranged on one side of the handle portion, which is away from the positioning shaft portion, and is used for connecting the detection assembly.

According to the technical scheme, the utility model has at least the following advantages and positive effects:

The utility model discloses a detection tool for a hub brake drum assembly. Wherein, be provided with a plurality of rollers of setting side by side on the installation rack to make wheel hub can remove on the roller. The locating hole has been seted up at the top of location dabber, and the periphery is provided with first rotating member to when the axial displacement of location dabber, first rotating member can support in wheel hub's centre bore. The auxiliary support shaft is downwards arranged in the positioning hole in a penetrating mode, a second rotating piece is arranged on the outer peripheral side of the auxiliary support shaft and can be propped against the inner wall of the central hole, and therefore the hub can rotate relative to the positioning mandrel and the auxiliary support shaft. One end of the detection component is connected to the top of the auxiliary supporting shaft, and the other end of the detection component is used for propping against the braking surface so as to detect the distance between the center hole and the rotating axis of the hub, and further obtain the runout tolerance of the braking surface. Because the wheel hub can be jacked up when the positioning mandrel moves upwards, the wheel hub can rotate relative to the positioning mandrel, and the detection assembly is used for detecting the braking surface, so that the detection tool can be used for rapidly detecting the braking surface of the wheel hub brake drum assembly, and the detection efficiency of the braking surface of the wheel hub is improved.

Drawings

FIG. 1 is a schematic diagram of a detection tool for a hub brake drum assembly according to an embodiment of the present utility model.

Fig. 2 is a schematic diagram of a side view of the inspection tool of fig. 1.

Fig. 3 is a schematic diagram of another side view of the inspection tool of fig. 1.

Fig. 4 is a top view of a support table of the inspection tool of fig. 1.

Fig. 5 is a schematic diagram of an auxiliary roller set of the inspection tool of fig. 1.

Fig. 6 is a schematic diagram of an auxiliary roller of the inspection tool of fig. 1.

Fig. 7 is a schematic diagram of a cross-sectional view of the auxiliary roller of fig. 6.

Fig. 8 is a schematic diagram of an auxiliary support shaft of the inspection tool of fig. 1.

Fig. 9 is a schematic diagram of the inspection tool of fig. 1 when the positioning mandrel moves upwards.

Fig. 10 is a schematic diagram of the inspection tool of fig. 1 when the positioning mandrel moves downward.

The reference numerals are explained as follows:

10-a hub brake drum assembly; 11-braking surface; 12-a central hole; 20-mounting a rack; 21-a roller; 22-auxiliary roller sets; 23-auxiliary brackets; 24-rolling wheels; 30-positioning a mandrel; 31-positioning holes; 32-a first rotating member; 40-auxiliary support shaft; 41-a second rotating member; 42-positioning the shaft portion; 43-handle; 44-a connection; 45-mounting part; 50-a detection assembly; 60-a drive assembly; 61-connecting plates; 62-driving a cylinder; 63-mounting plate; 64-guide posts; 71-a control unit; 72-a photoelectric switch; 73-foot switch; 74-aligning device; 201-supporting frames; 202-a support table; 321-bearing outer ring; 411-bearing outer ring; 611-guiding holes.

Detailed Description

Exemplary embodiments that embody features and advantages of the present utility model will be described in detail in the following description. It will be understood that the utility model is capable of various modifications in various embodiments, all without departing from the scope of the utility model, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that in the embodiments shown in the drawings, indications of directions or positional relationships (such as up, down, left, right, front, rear, etc.) are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the description of the position of these elements changes, the indication of these directions changes accordingly.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the existing hub brake drum assembly runout detection tool, a flat plate is fixed on the ground, a runout detection mandrel is fixed on the flat plate, and when the detection is carried out, the hub brake drum assembly is hoisted, placed on the detection mandrel, and rotated, and the runout tolerance of a brake surface of the hub brake assembly is detected. The detection mode is inconvenient to operate, has low detection efficiency, and is difficult to meet the detection requirement of mass production. Therefore, a detection tool for a hub brake drum assembly is provided at present to solve the problems.

The scheme is further illustrated by the following examples:

In this embodiment, the left-right direction in fig. 1 is taken as the longitudinal direction of the detection tool of the hub brake drum assembly; taking the up-down direction in fig. 1 as the up-down direction of the detection tool; and taking the direction vertical to the paper surface as the transverse direction of the detection tool. In addition, the hub-brake drum assembly 10 is integrally formed by the hub and the brake drum. In addition, the detection tool of the hub brake drum assembly of the embodiment is used for detecting the runout tolerance of the braking surface 11 of the hub brake drum assembly 10 so as to ensure that the runout tolerance of the braking surface 11 after the hub and the brake drum are installed meets the requirements.

Referring to fig. 1-3, the detection tool for a hub brake drum assembly of the present embodiment includes a mounting rack 20, a positioning mandrel 30, an auxiliary supporting shaft 40, a detection assembly 50 and a driving assembly 60. Wherein, be provided with a plurality of rollers 21 on the installation rack 20, the rotatable connection of roller 21 around the axis of transverse direction is on installation rack 20. The plurality of rollers 21 extend in the longitudinal direction, i.e. the plurality of rollers 21 are arranged side by side in the longitudinal direction, so that the hub brake drum assembly 10 can be moved in the longitudinal direction on the rollers 21, so that the hub brake drum assembly 10 can be moved along the rollers 21 over the positioning spindle 30. The positioning mandrel 30 is mounted on the mounting stand 20 and extends vertically.

Meanwhile, a positioning hole 31 and a first rotating piece 32 are arranged at the top of the positioning mandrel 30, wherein the first rotating piece 32 is sleeved on the periphery of the positioning mandrel 30 and can rotate around the positioning mandrel 30. The positioning mandrel 30 can move upwards and penetrate through the central hole 12 of the hub brake drum assembly 10, and meanwhile drives the first rotating member 32 to abut against the inner peripheral wall of the central hole 12. When the first rotating member 32 abuts against the inner peripheral wall of the center hole 12, the hub brake drum assembly 10 can be lifted up, and the hub brake drum assembly 10 can be rotated relative to the positioning spindle 30. The positioning hole 31 is formed at the upper end of the positioning mandrel 30, and the axis of the positioning hole 31 coincides with the axis of the first rotating member 32.

The auxiliary supporting shaft 40 is downwardly penetrated into the positioning hole 31. Meanwhile, the auxiliary support shaft 40 is provided with a second rotating member 41, and the second rotating member 41 is provided at the outer periphery of the auxiliary support shaft 40 and can abut against the inner peripheral wall of the center hole 12, so that the hub brake drum assembly 10 can rotate relative to the auxiliary support shaft 40 and the positioning spindle 30. Specifically, the second rotating member 41 is located above the first rotating member 32.

In addition, one end of the detection assembly 50 is connected to an end of the auxiliary support shaft 40 remote from the positioning mandrel 30, i.e., one end of the detection assembly 50 is connected to the top of the auxiliary support shaft 40. Meanwhile, the other end of the detecting component 50 is used for abutting against the braking surface 11, so that when the hub brake drum assembly 10 rotates relative to the positioning mandrel 30 and the auxiliary supporting shaft 40, the detecting component 50 can be used for detecting the distance between the braking surface 11 and the rotation axis of the hub brake drum assembly 10, namely the relative tolerance of the braking surface 11, and further the runout tolerance of the braking surface 11 is obtained through calculation.

It should be noted that, the detecting component 50 is a runout tolerance detecting table, and the detecting component 50 is connected to the top of the auxiliary supporting shaft 40 through magnetic attraction.

In this embodiment, the driving assembly 60 is used to drive the positioning mandrel 30 to move upwards. Specifically, the driving assembly 60 is connected between the mounting stage 20 and the bottom of the positioning spindle 30 to be able to drive the positioning spindle 30 to move in the vertical direction.

Therefore, when the positioning mandrel 30 moves upwards under the drive of the driving component 60, the positioning mandrel 30 and the first rotating member 32 can jack up the hub brake drum assembly 10, so that the hub brake drum assembly 10 can rotate relative to the positioning mandrel 30 and the auxiliary supporting shaft 40, and the detection component 50 can complete the detection of the braking surface 11, so that the detection tool can not only move the hub brake drum assembly 10, but also rapidly complete the detection of the runout tolerance of the braking surface 11.

Referring to fig. 1, in the present embodiment, the mounting stand 20 includes a support frame 201 and a support stand 202, and the support stand 202 is located on top of the support frame 201 to support the support stand 202. Specifically, the rollers 21 are mounted on the rollers 21 such that the hub brake drum assembly 10 can move along the plurality of rollers 21 as the rollers 21 roll. In addition, the positioning mandrel 30 is connected to the supporting frame 201 and is located below the supporting table 202, so that when the positioning mandrel 30 moves upwards, the positioning mandrel 30 can be inserted into the supporting table 202 and drive the first rotating member 32 to abut against the central hole 12 of the hub brake drum assembly 10.

Referring to fig. 1, 4 and 5, a plurality of auxiliary roller groups 22 are provided on the mounting stand 20, and the auxiliary roller groups 22 are mounted on the supporting frame 201 with the tops of the auxiliary roller groups 22 maintained flush with the tops of the supporting tables 202. A plurality of auxiliary roller sets 22 are distributed around the vertical axis and are adapted to the bottom of the central bore 12 so that the auxiliary roller sets 22 can be supported at the bottom of the hub brake drum assembly 10. That is, the plurality of auxiliary roller sets 22 are distributed about the vertical axis so that the plurality of auxiliary roller sets 22 can be abutted against the lower end of the central hole 12 of the hub brake drum assembly 10 and so that the top of the positioning spindle 30 can be threaded between the plurality of auxiliary roller sets 22 and into the central hole 12 of the hub brake drum assembly 10 located on the auxiliary roller sets 22.

In addition, the top of the auxiliary roller set 22 remains flush with the top of the drum 21 to enable the hub brake drum assembly 10 to move between the drum 21 and the auxiliary roller set 22. I.e. the hub brake drum assembly 10 can be moved along the rolling roller set 21 onto the auxiliary roller set 22 and along the rolling auxiliary roller set 22 onto the roller set 21 on the other side, so that the hub brake drum assembly 10 can be moved on the support table 202.

Referring to fig. 6 and 7, the auxiliary roller group 22 is provided with an auxiliary bracket 23 and two rollers 24. The auxiliary bracket 23 is fixedly connected to the mounting rack 20, that is, the bottom of the auxiliary bracket 23 is connected to the supporting frame 201. Meanwhile, the axis of the roller 24 extends in the lateral direction, and the two rollers 24 are coaxially disposed. At the same time, two rollers 24 are rotatably connected to the auxiliary bracket 23 such that the rollers 24 can rotate along their own axes relative to the auxiliary bracket 23, thereby enabling the hub brake drum assembly 10 to move longitudinally along the rolling rollers 24.

It should be noted that, in other embodiments, the auxiliary roller set 22 may be provided as an auxiliary bracket 23, and a single roller or a single roller, and the single roller or the single roller is rotatably connected to the auxiliary bracket 23, so that the hub brake drum assembly 10 can rotate along the roller or the roller. In addition, in other embodiments, the auxiliary bracket 23 may be independently supported on the ground so as to be able to stably support the roller 24.

Further, in this embodiment, both the roller 21 and the roller 24 are unpowered rollers, thereby requiring manual actuation of the hub brake drum assembly 10 over the roller 21 and the roller 24.

Referring to fig. 1 and 2, in the present embodiment, the first rotating member 32 and the second rotating member 41 are both inclined bearings. Wherein the first rotating member 32 and the second rotating member 41 are mounted on the outer peripheral walls of the positioning mandrel 30 and the auxiliary supporting shaft 40, respectively. Specifically, in the present embodiment, the first rotating member 32 and the second rotating member 41 are both bearing inner rings, and are mounted on the outer peripheral walls of the positioning mandrel 30 and the auxiliary support shaft 40, respectively. Meanwhile, the bearing outer ring 321 and the bearing outer ring 411 are respectively disposed in the central hole 12 corresponding to the first rotating member 32 and the second rotating member 41, so that after the first rotating member 32 and the second rotating member 41 are respectively in abutting fit with the bearing outer ring 321 and the bearing outer ring 411, the first rotating member 32 and the second rotating member 41 can respectively rotate relative to the bearing outer ring 321 and the bearing outer ring 411. The bearing outer ring 321 and the bearing outer ring 411 are each mounted in the center hole 12 in advance.

Therefore, when the positioning mandrel 30 moves upwards, the positioning hole 31 can be propped against the lower part of the central hole 12, and after the lower end of the auxiliary supporting shaft 40 is penetrated in the positioning hole 31, the second rotating member 41 can be propped against the upper part of the central hole 12, so that the wheel hub brake drum assembly 10 forms a limit under the propping of the first rotating member 32 and the second rotating member 41, and the wheel hub brake drum assembly 10 can rotate along the axis of the central hole 12. Thus, when the positioning spindle 30 is moved upward by the driving unit 60, the positioning spindle 30 is abutted against the central hole 12 of the hub brake drum assembly 10 by the first rotating member 32, and lifts the hub brake drum assembly 10, and the hub brake drum assembly 10 is released from the support of the roller 24, and then the hub brake drum assembly 10 is rotated, so that the hub brake drum assembly 10 can rotate relative to the first rotating member 32 and the second rotating member 41 under the support of the first rotating member 32.

It should be noted that, in other embodiments, the first rotating member 32 and the second rotating member 41 may be configured as sliding sleeves, so that the hub brake drum assembly 10 can rotate relative to the positioning spindle 30 and the auxiliary support shaft 40 after the first rotating member 32 abuts against the central hole 12.

Referring to fig. 8, the auxiliary supporting shaft 40 is provided with a positioning shaft portion 42, a handle portion 43, a connecting portion 44, and a mounting portion 45. Wherein, the positioning shaft portion 42 is located at the lower end of the auxiliary supporting shaft 40, so that the auxiliary supporting shaft 40 can be penetrated or clamped into the positioning hole 31 of the positioning mandrel 30 through the positioning shaft portion 42. The connection portion 44 is located at an end of the auxiliary support shaft 40 away from the positioning shaft portion 42, that is, the connection portion 44 is located at a top of the auxiliary support shaft 40, so that the connection portion 44 can be connected to the detection assembly 50 when the auxiliary support shaft 40 is inserted or clamped into the positioning hole 31. The mounting portion 45 and the handle portion 43 are located between the positioning shaft portion 42 and the connecting portion 44, and the handle portion 43 is located above the mounting portion 45, i.e., the handle portion 43 is located on a side of the mounting portion 45 away from the positioning shaft portion 42, while the connecting portion 44 is disposed on a side of the handle portion 43 away from the positioning shaft portion 42. In the present embodiment, the lifting handle 43 is used to lift the auxiliary support shaft 40, so that the auxiliary support shaft 40 can lift the auxiliary support shaft 40 by the lifting handle 43, thereby manually clamping the auxiliary support shaft 40 into the positioning hole 31 of the positioning mandrel 30 or disengaging the auxiliary support shaft 40 from the positioning mandrel 30.

Referring to fig. 1 and 3, the driving assembly 60 includes a connection plate 61, a driving cylinder 62, a mounting plate 63, and a guide post 64. In this embodiment, the connection plate 61 is fixed to the mounting stand 20 and is located below the roller 21. Specifically, the connection plate 61 is connected to the auxiliary bracket 23 and is located below the roller 21. The connection plate 61 is provided with a guide hole 611, and the guide hole 611 is matched with the guide post 64, so that the guide post 64 can slide relative to the connection plate 61 through the guide hole 611. The top end of the guide post 64 is connected to the mounting plate 63, and the bottom end of the guide post 64 is penetrated in the guide hole 611 so that the mounting plate 63 can move up and down relative to the connection plate 61 through the guide post 64. The top of mounting panel 63 is connected with location dabber 30, and the output of drive cylinder 62 is connected to the bottom to make drive cylinder 62 can drive mounting panel 63 and location dabber 30 to remove in the vertical direction. The driving cylinder 62 is connected to the bottom of the connection plate 61, and the output end of the driving cylinder 62 penetrates the connection plate 61 and is connected to the mounting plate 63.

It should be noted that the guide posts 64 and the guide holes 611 are provided with a plurality of groups so that the mounting plate 63 and the positioning mandrel 30 can be smoothly moved in the vertical direction.

In this embodiment, the driving cylinder 62 may be configured as a linear motor or a hydraulic cylinder, so that the driving assembly 60 can drive the positioning mandrel 30 to move up and down.

Furthermore, in the present embodiment, the auxiliary bracket 23 is connected to the connection plate 61, so that the hub brake drum assembly 10 on the roller 24 can be kept relatively stable, and the first rotating member 32 can abut against the inner wall of the central hole 12 during the upward movement of the positioning spindle 30.

Referring to fig. 3, the detection tool for the hub brake drum assembly further includes a control unit 71, a photoelectric switch 72, and a foot switch 73. Wherein the control unit 71 is electrically connected to the driving cylinder 62, the photo switch 72 and the foot switch 73, so that the control unit 71 can control the on or off of the driving cylinder 62 through the photo switch 72 and the foot switch 73.

In this embodiment, the photoelectric switch 72 is mounted on the mounting stand 20 and is located above the positioning spindle 30, so that when the hub brake drum assembly 10 moves to a specific position above the positioning spindle 30, the photoelectric switch 72 can control the driving cylinder 62 to operate and drive the positioning spindle 30 to move upwards, so that the first rotating member 32 on the positioning spindle 30 can abut against the central hole 12, and lift the hub brake drum assembly 10 off the support of the roller 24, as shown in fig. 9, so that the hub brake drum assembly 10 can rotate relative to the positioning spindle 30 when the hub brake drum assembly 10 is rotated.

Further, a foot switch 73 is provided at the side of the mounting stand 20 to control the driving cylinder 62 to move downward. That is, after the detection assembly 50 completes the measurement of the braking surface 11, the foot switch 73 controls the driving cylinder 62 to move downwards, so as to drive the hub brake drum assembly 10 to drop onto the roller 24, and the positioning mandrel 30 and the first rotating member 32 are separated from the central hole 12, as shown in fig. 10, so that the positioning mandrel 30 and the first rotating member 32 are prevented from limiting the longitudinal movement of the hub brake drum assembly 10.

It should be noted that, the photoelectric switch 72 is provided with a photoelectric sensor, so that when the hub brake drum assembly 10 moves to a specific position, the photoelectric switch 72 can be triggered to operate. Specifically, the photoelectric switch 72 is mounted on the support table 202 and is located at the side of the auxiliary roller group 22. Meanwhile, the foot switch 73 is used for controlling the work of the foot switch 73 through the foot, so that the man-machine efficiency of the detection tool is improved. It should be noted that, in other embodiments, the foot switch 73 may be configured as a hand-operated switch to control the driving cylinder 62.

Referring to fig. 3, the detection tool for the hub brake drum assembly further includes an alignment device 74. Wherein the alignment device 74 is mounted on the mounting stand 20 above the positioning spindle 30 to enable alignment of the hub brake drum assembly 10 to a specific location above the positioning spindle 30.

In this embodiment, the alignment device 74 is mounted on the support stand 202 and located at a side of the auxiliary roller set 22, so that the hub brake drum assembly 10 is quickly positioned to a specific position above the positioning mandrel 30 by the alignment action of the alignment device 74, so that the first rotating member 32 can abut against the inner wall of the central hole 12 when the positioning mandrel 30 moves upwards.

In summary, the hub brake drum assembly 10 moves along the roller 21 onto the auxiliary roller set 22, and under the alignment of the alignment device 74, the hub brake drum assembly 10 is located at a specific position above the positioning spindle 30, and the photoelectric switch 72 senses the hub brake drum assembly 10 and controls the driving cylinder 62 to operate, so that the driving cylinder 62 drives the positioning spindle 30 and the first rotating member 32 to move upwards and abut against the central hole 12, and simultaneously the hub brake drum assembly 10 abuts against upwards, so that the hub brake drum assembly 10 is separated from the roller 24. The positioning shaft portion 42 of the auxiliary supporting shaft 40 is inserted into or clamped in the positioning hole 31, and the second rotating member 41 abuts against the central hole 12. The position of the detecting assembly 50 at the top of the auxiliary supporting shaft 40 is adjusted such that the detecting end of the detecting assembly 50 faces the braking surface 11 and abuts against the braking surface 11. At this time, the hub brake drum assembly 10 is rotated, so that the hub brake drum assembly 10 can rotate along the axis of the positioning mandrel 30, and the detection assembly 50 can read the distance between the braking surface 11 and the rotation axis, and further obtain the runout tolerance data of the braking surface 11. When the detection is completed, the auxiliary support shaft 40 is disengaged from the positioning hole 31, and the auxiliary support shaft 40 is disengaged from the center hole 12. At the same time, the foot switch 73 is activated, so that the foot switch 73 controls the driving cylinder 62 to move downward, so that the driving cylinder 62 drives the positioning mandrel 30 and the positioning hole 31 to move downward and separate from the center hole 12. Hub brake drum assembly 10 is then moved from roller 24 to roller 21 and along roller 21 to the next station.

Therefore, the detection tool of the embodiment can reduce the steps of lifting the hub brake drum assembly 10 and the like, and can rapidly detect the runout tolerance of the central hole 12 of the hub brake drum assembly 10, thereby improving the detection efficiency of the tool.

While the utility model has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present utility model may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (10)

1. A detection frock of wheel hub brake drum assembly for detect wheel hub brake drum assembly's braking surface's tolerance of beating, its characterized in that, detect the frock and include:

a mounting rack on which a plurality of rollers are provided; a plurality of rollers rotatably connected to the mounting rack about a transverse axis and extending longitudinally such that the hub is longitudinally movable on the rollers;

The positioning mandrel is arranged on the mounting rack and extends vertically; the top of the positioning mandrel is provided with a positioning hole and a first rotating piece; the first rotating piece is sleeved on the periphery of the positioning mandrel and can rotate around the positioning mandrel; the positioning mandrel can move upwards and penetrate through the central hole of the hub, and the first rotating piece abuts against the inner peripheral wall of the central hole so that the hub can rotate relative to the positioning mandrel; the positioning hole is formed in the upper end of the positioning mandrel, and the axis of the positioning hole is coincident with the axis of the first rotating piece;

The auxiliary supporting shaft is used for penetrating downwards into the positioning hole; the auxiliary supporting shaft is provided with a second rotating piece, and the second rotating piece is arranged on the periphery of the auxiliary supporting shaft and props against the inner peripheral wall of the central hole so that the hub can rotate relative to the auxiliary supporting shaft; the second rotating piece is positioned above the first rotating piece;

And one end of the detection assembly is connected to one end of the auxiliary support shaft, which is far away from the positioning mandrel, and the other end of the detection assembly is used for propping against the braking surface so as to be used for detecting the distance between the braking surface and the rotating axis of the hub.

2. The inspection tool according to claim 1, wherein a plurality of auxiliary roller sets are arranged on the mounting rack; the auxiliary roller groups are distributed around the axis in the vertical direction and are matched with the bottom of the central hole, so that the auxiliary roller groups can be supported at the bottom of the hub; the top of the auxiliary roller set is kept flush with the top of the roller so that the hub can move between the roller and the auxiliary roller set.

3. The detection tool according to claim 2, wherein the auxiliary roller set is provided with an auxiliary bracket and two rollers; the auxiliary bracket is fixedly connected to the mounting rack; the axis of gyro wheel is along transversely extending, and two the gyro wheel is coaxial to be set up, and rotate to be connected on the auxiliary stand, so that the gyro wheel can follow self axis relative the auxiliary stand rotates.

4. The inspection tool of claim 1 further comprising a drive assembly for driving movement of the positioning mandrel; the driving assembly is connected between the mounting rack and the bottom of the positioning mandrel, so that the positioning mandrel can be driven to move along the vertical direction.

5. The inspection tool of claim 4 wherein the drive assembly comprises a connecting plate, a drive cylinder, a mounting plate, and a guide post; the connecting plate is fixed on the mounting rack and is positioned below the roller; the connecting plate is provided with a guide hole matched with the guide post so that the guide post can slide relative to the connecting plate through the guide hole; the top of the mounting plate is connected with a positioning mandrel; the top end of the guide post is connected with the mounting plate, and the bottom end of the guide post is arranged in the guide hole in a penetrating way; the driving cylinder is connected between the connecting plate and the mounting plate, so as to drive the mounting plate and the positioning mandrel to move.

6. The inspection tool according to claim 5, further comprising a control unit, a photoelectric switch, and a foot switch; the control unit is electrically connected with the driving cylinder, the photoelectric switch and the foot switch; the photoelectric switch is arranged on the mounting rack and is positioned above the positioning mandrel, so that when the hub moves to a specific position above the positioning mandrel, the photoelectric switch can control the driving cylinder to operate and drive the positioning mandrel to move axially; the foot switch is positioned at the side edge of the mounting rack so as to control the driving cylinder to move downwards.

7. The inspection tool of claim 1 further comprising an alignment device; the alignment device is arranged on the mounting rack and is positioned above the positioning mandrel so as to align the hub to a specific position above the positioning mandrel.

8. The inspection tool according to claim 1, wherein the first rotating member and the second rotating member are inclined bearings, such that the hub is capable of rotating relative to the first rotating member and the second rotating member after the first rotating member and the second rotating member are respectively abutted in the central hole.

9. The detection tool according to claim 1, wherein a positioning shaft portion and a handle portion are arranged on the auxiliary support shaft; the positioning shaft part is used for penetrating the positioning hole; the handle portion is disposed between the positioning shaft portion and the handle portion and above the second rotating member so as to be able to lift the auxiliary supporting shaft through the handle portion.

10. The detection tool according to claim 9, wherein a connecting part is arranged on the auxiliary supporting shaft; the connecting portion is arranged on one side of the handle portion, which is away from the positioning shaft portion, and is used for connecting the detection assembly.