阅读说明：本技术 车桥主销孔内套检测机构 (Axle main pin hole inner sleeve detection mechanism ) 是由 陈学福 何伟 于 2019-07-20 设计创作，主要内容包括：本发明涉及一种车桥主销孔内套检测机构,包括内径检测结构、按压结构、托板和底板,内径检测结构包括下比对圆盘、上比对圆盘和、旋转结构,下比对圆盘的下端转动连接在底板上,下比对圆盘穿设有顶杆,上比对圆盘设有可拔出地穿设在下比对圆盘内的竖连接轴,竖连接轴同顶杆抵接在一起的锥面段,顶杆设有弹性层,定挡块和动挡块之间形成内套壁厚比对通道,动挡块沿转轴的径向滑动连接在托板上,托板上设有动挡块位置调节机构。本发明提供了一种既能够检测内径又能够方便地检测出周向各处的壁厚是否符合要求的车桥主销孔内套检测机构,解决了通过不同的机构进行检测壁厚和内径且壁厚为通过游标卡尺沿内套的周向逐个点进行检测所存在的麻烦的问题。(The invention relates to an axle main pin hole inner sleeve detection mechanism which comprises an inner diameter detection structure, a pressing structure, a supporting plate and a bottom plate, wherein the inner diameter detection structure comprises a lower comparison disc, an upper comparison disc and a rotating structure, the lower end of the lower comparison disc is rotatably connected to the bottom plate, an ejector rod penetrates through the lower comparison disc, the upper comparison disc is provided with a vertical connecting shaft which can be pulled out and penetrates through the lower comparison disc, the vertical connecting shaft and the ejector rod are abutted against a conical surface section, the ejector rod is provided with an elastic layer, an inner sleeve wall thickness comparison channel is formed between a fixed stop block and a movable stop block, the movable stop block is connected to the supporting plate in a sliding mode along the radial direction of a rotating shaft, and. The invention provides an axle main pin hole inner sleeve detection mechanism which can detect the inner diameter and can conveniently detect whether the wall thickness of each circumferential position meets the requirement, and solves the problem that the wall thickness and the inner diameter are detected through different mechanisms, and the wall thickness is detected point by point along the circumferential direction of the inner sleeve through a vernier caliper.)

1. The utility model provides an axle king pin hole endotheca detection mechanism, its characterized in that, includes internal diameter detection structure and from the top down sets gradually presses structure, layer board and bottom plate, internal diameter detection structure includes compares the disc down, compares disc and drive down and compares disc pivoted revolution mechanic, the diameter of comparing the disc down is the lower limit value of endotheca internal diameter, the diameter of comparing the disc on going up is the upper limit value of endotheca internal diameter, the lower extreme of comparing the disc down is equipped with supports on the bottom plate and rotates the vertical pivot axle of connecting on the layer board, the upper end is equipped with vertical connecting hole, compare the disc down and wear to be equipped with 3 at least along vertical pivot axle circumference distribution radial extension's ejector pins, rotary mechanism includes setting up at vertical pivot epaxial gear, with the rack that the gear meshing is in the same place and the translation mechanism that drives the rack and come and go the translation, the lower extreme of comparing the disc is equipped with can pull out, the vertical connecting shaft is provided with a conical surface section, the lower end of the conical surface section is small, the upper end of the conical surface section is large, the conical surface section is used for being abutted with the ejector rod and is used for driving the ejector rod to abut against an inner sleeve sleeved on a lower comparison disc, one end of the ejector rod is provided with an elastic layer, the pressing structure comprises a pressing plate and a lifting mechanism for driving the pressing plate to press the upper comparison disc, a base plate is supported on the supporting plate through a spring, a fixed stop block and a movable stop block are arranged on the base plate, an inner sleeve wall thickness comparison channel is formed between the fixed stop block and the movable stop block, the upper end of the inner sleeve wall thickness comparison channel is provided with an introducing port, the fixed stop block and the movable stop block are distributed along the; when the inner sleeve with the inner diameter and the wall thickness both meeting the design values is sleeved on the lower comparison disc, the wall of the inner sleeve can be inserted into the inner sleeve wall thickness comparison channel; the fixed stop block is positioned between the vertical rotating shaft and the movable stop block, the fixed stop block is cylindrical, and the surface of the movable stop block, which faces one side of the fixed stop block, is a radial vertical plane vertical to the vertical rotating shaft; 3 the vertical rotating shafts are uniformly distributed along the circumferential direction of the lower comparison disc.

2. The axle kingpin bore liner detection mechanism of claim 1, wherein a sum of an inner diameter of the liner plus one half of a wall thickness of the liner is equal to a distance of the wall thickness of the liner from an axis of the vertical axis relative to a midpoint of the channel.

3. The axle kingpin hole inner sleeve detection mechanism of claim 1, wherein the movable stop position adjustment mechanism comprises a rotary plate abutting against a side of the movable stop remote from the fixed stop, the rotary plate being eccentrically provided with a vertical rotation shaft, the vertical rotation shaft being threadedly coupled to the support plate.

4. The axle kingpin hole inner sleeve detection mechanism of claim 1, wherein the fixed stop is positioned between the vertical shaft and the movable stop, and the movable stop position adjustment mechanism is positioned on a side of the movable stop remote from the fixed stop.

5. The axle kingpin bore liner detection mechanism of claim 1, wherein the resilient layer is a rubber layer.

6. The axle kingpin bore liner detection mechanism of claim 1, wherein the vertical shaft is supported on the base plate via a flat bearing.

7. The axle kingpin hole liner detection mechanism of claim 1, wherein the lower surface of the pressing plate is provided with a plurality of pressing balls.

Technical Field

The invention relates to an axle checking fixture, in particular to an axle main pin hole inner sleeve detecting mechanism.

Background

The vehicle axle of the automobile is provided with a front axle and a rear axle, wherein the front axle is used for mounting front wheels and supporting the weight of the front part of the automobile and is connected with a frame by a front suspension frame. A front axle of an automobile with a conventional structure is disclosed in chinese patent application No. 2011201792654, which is entitled "front axle assembly of an automobile" with publication date of 2011, 12 and 28. The automobile front axle comprises a cross rod and two cantilevers, a frame supporting part is arranged at each of two ends of the cross rod, the two cantilevers are connected with each of the two cross rods, and main pin holes are formed in the cantilevers. When the front wheel steering device is used, the steering knuckle is arranged in the main pin hole in a penetrating mode through the main pin and connected with the front shaft, and the front wheel is installed on the steering knuckle. The original automotive front axle suffers from the following disadvantages: the cross rod and the cantilever are of split structures and are connected together in a welding mode, so that the position between the cantilever and the cross rod is easy to deviate and not meet the requirement, and the yield is low; for the improvement of the company, the automobile front axle with a flat bottom casting structure is designed; however, the axle with the cast structure has the following defects: the king pin holes are susceptible to wear resulting in scrapping of the front axle. In order to solve the problem of wear of the main pin hole, the inner sleeve 1 shown in fig. 3 is designed to be installed in the main pin hole. The two end surfaces of the inner sleeve are inclined surfaces. In the production process of the inner sleeve, whether the wall thickness and the inner diameter are within a set range or not needs to be detected, namely whether the tolerance meets the standard or not. The wall thickness and the inner diameter of the existing inner sleeve are detected by different detection mechanisms, and the detection is troublesome; the wall thickness is detected by a vernier caliper to detect a plurality of circumferential points of the inner sleeve for judgment, and because the number of detection points is limited, when the part which does not meet the requirement is not sampled, misjudgment can be generated, and the accuracy in detection is poor.

Disclosure of Invention

The invention provides an axle main pin hole inner sleeve detection mechanism which can detect the inner diameter and can conveniently detect whether the wall thickness of each circumferential position meets the requirement, and solves the problem that the wall thickness and the inner diameter are detected through different mechanisms, and the wall thickness is detected point by point along the circumferential direction of the inner sleeve through a vernier caliper.

The technical problem is solved by the following technical scheme: an axle main pin hole inner sleeve detection mechanism comprises an inner diameter detection structure, a pressing structure, a supporting plate and a bottom plate, wherein the pressing structure, the supporting plate and the bottom plate are sequentially arranged from top to bottom, the inner diameter detection structure comprises a lower comparison disc, an upper comparison disc and a lower comparison disc rotating structure, the lower comparison disc diameter is the lower limit value of the inner sleeve inner diameter, the upper comparison disc diameter is the upper limit value of the inner sleeve inner diameter, the lower comparison disc lower end is provided with a vertical rotating shaft which is supported on the bottom plate and is rotatably connected to the supporting plate, a vertical connecting hole is formed in the upper end of the vertical rotating shaft, at least 3 ejector rods which radially extend along the circumferential distribution of the vertical rotating shaft are penetrated through the lower comparison disc, the rotating mechanism comprises a gear arranged on the vertical rotating shaft, a rack meshed with the gear and a translation mechanism for driving the rack to translate back and forth, the upper comparison disc lower end is provided, the vertical connecting shaft is provided with a conical surface section, the lower end of the conical surface section is small, the upper end of the conical surface section is large, the conical surface section is used for being abutted with the ejector rod and is used for driving the ejector rod to abut against an inner sleeve sleeved on a lower comparison disc, one end of the ejector rod is provided with an elastic layer, the pressing structure comprises a pressing plate and a lifting mechanism for driving the pressing plate to press the upper comparison disc, a base plate is supported on the supporting plate through a spring, a fixed stop block and a movable stop block are arranged on the base plate, an inner sleeve wall thickness comparison channel is formed between the fixed stop block and the movable stop block, the upper end of the inner sleeve wall thickness comparison channel is provided with an introducing port, the fixed stop block and the movable stop block are distributed along the; when the inner sleeve with the inner diameter and the wall thickness both meeting the design values is sleeved on the lower comparison disc, the wall of the inner sleeve can be inserted into the inner sleeve wall thickness comparison channel. When the device is used, the position of the movable stop block is adjusted by the movable stop block position adjusting mechanism until the ratio of the wall thickness of the inner sleeve to the width of the channel is equal to the upper limit value of the wall thickness of the inner sleeve; the inner sleeve is sleeved on the lower comparison disc, if the inner sleeve can be sleeved, the protection requirement of the lower limit value of the inner diameter is indicated, then the vertical connecting shaft is inserted into the vertical connecting hole, whether the upper inner sleeve can be sleeved on the upper comparison disc is determined, if the inner sleeve can not be sleeved, the upper limit value of the inner diameter meets the requirement, and when the inner diameter meets the requirement, the wall of the inner sleeve is inserted into the inner sleeve wall thickness comparison channel and then the comparison disc is pressed down through a pressing structure, so that the conical surface section moves down to drive the ejector rod to extend out and prop against the inner circumferential surface of the inner sleeve. The rotating mechanism drives the vertical rotating shaft to rotate 360 degrees so as to realize that the inner sleeve rotates 360 degrees, and if the inner sleeve can pass through the inner sleeve wall thickness comparison channel and is not clamped by the inner sleeve wall thickness comparison channel in the process that the inner sleeve rotates 360 degrees, the wall thickness of the inner sleeve does not exceed the upper limit value. And then adjusting the position of the movable stop block to a position where the width of the inner sleeve wall thickness comparison channel is equal to the lower limit value of the inner sleeve wall thickness through the movable stop block position adjusting mechanism, driving the inner sleeve to rotate 360 degrees in the opposite direction through the rotating mechanism, and sleeving the inner sleeve wall thickness comparison channel on the wall of the inner sleeve by seeing whether the supporting plate can be jacked up by the spring in the process of rotating 360 degrees, wherein if the supporting plate is not sleeved on the wall of the inner sleeve, the lower limit value of the inner sleeve wall thickness is shown to meet the requirement. The design of elastic layer for no matter the internal diameter is upper deviation or lower deviation, can both provide the radial translation of endotheca and dodge the space for the deformation through the elastic layer, make the endotheca wall thickness compare the passageway can not block the endotheca and lead to the endotheca can not produce the rotation and produce the erroneous judgement when the wall thickness meets the requirements.

Preferably, the sum of the inner diameter of the inner sleeve and half of the wall thickness of the inner sleeve is equal to the distance between the wall thickness ratio of the inner sleeve and the axis of the vertical rotating shaft from the midpoint of the channel. A minimization of the thickness of the elastic layer can be achieved.

Preferably, the movable stop position adjusting mechanism comprises a rotary table abutted against one side of the movable stop far away from the fixed stop, the rotary table is eccentrically provided with a vertical rotating shaft, and the vertical rotating shaft is in threaded connection with the supporting plate. When the device is used, the rotating disc is rotated to drive the movable stop block, so that the wall thickness of the inner sleeve is adjusted to the width of the channel. The adjustment is convenient.

Preferably, the fixed stop block is positioned between the vertical rotating shaft and the movable stop block, and the movable stop block position adjusting mechanism is positioned on one side of the movable stop block, which is far away from the fixed stop block. In the process of detecting the upper and lower limit values of the wall thickness to switch, the width of the inner sleeve wall thickness comparison channel can be adjusted without taking down the inner sleeve, and the use is convenient.

Preferably, the fixed stop block is positioned between the vertical rotating shaft and the movable stop block, the fixed stop block is cylindrical, and the surface of the movable stop block facing to one side of the fixed stop block is a radial vertical plane perpendicular to the vertical rotating shaft. No matter how large the inner diameter and the outer diameter of the inner sleeve are, the stop block cannot interfere the inner sleeve to be inserted into the inner sleeve wall thickness comparison channel.

Preferably, the elastic layer is a rubber layer. Not only can elastically deform, but also has good reliability when the inner sleeve can rotate along with the comparison turntable.

Preferably, the vertical rotating shaft is supported on the base plate through a plane bearing.

Preferably, the lower surface of the pressing plate is provided with a plurality of pressing rolling balls.

The invention has the following advantages: the wall thickness and the inner diameter of the inner sleeve can be conveniently detected, and the detection is convenient and accurate.

Drawings

Fig. 1 is a schematic view of the present invention in use.

Fig. 2 is a schematic top view of the present invention with the pressing structure and the upper comparison turntable removed.

Fig. 3 is a schematic cross-sectional view of the inner sleeve.

In the figure: the device comprises an inner sleeve 1, a pressing structure 2, a supporting plate 3, a bottom plate 4, a lower comparison disc 5, an upper comparison disc 6, a rotating structure, a vertical rotating shaft 8, a vertical connecting hole 9, a plane bearing 10, an ejector rod 11, an elastic layer 12, a gear 13, a rack 14, a translation mechanism 15, a vertical connecting shaft 16, a conical section 17, a pressing plate 18, a lifting mechanism 19, a pressing rolling ball 20, a vertical guide rod 21, a spring 22, a movable stop block 23, an inner sleeve wall thickness comparison channel 24, an introducing port 25, a surface 26 of the movable stop block facing one side of the fixed stop block, a rotary table 27, a vertical rotating shaft 28, a threaded through hole 29, a wall 30 of the inner sleeve, a fixed stop block 31, a movable stop block position adjusting.

Detailed Description

The invention is further described with reference to the following figures and examples.

Referring to fig. 1 and 2, an axle main pin hole inner sleeve detection mechanism comprises an inner diameter detection structure, and a pressing structure 2, a supporting plate 3 and a bottom plate 4 which are sequentially arranged from top to bottom. The inner diameter detection structure comprises a lower comparison disc 5, an upper comparison disc 6 and a rotating structure 7 for driving the lower comparison disc to rotate. The diameter of the lower comparison disc is the lower limit value of the inner diameter of the inner sleeve 1. The diameter of the upper comparison disc is the upper limit value of the inner diameter of the inner sleeve. The upper end surface of the lower comparison disc is a convex conical surface, so that the inner sleeve can be conveniently sleeved on the lower comparison disc. The lower end of the lower comparison disc is provided with a vertical rotating shaft 8 which is supported on the bottom plate and is rotatably connected on the supporting plate, and the upper end of the lower comparison disc is provided with a vertical connecting hole 9. The vertical rotating shaft is coaxial with the upper comparison disc. The vertical rotating shaft is rotatably connected to the supporting plate and penetrates through the supporting plate. The lower end of the vertical shaft is supported on the base plate by a flat bearing 10. The vertical connecting hole is coaxial with the vertical rotating shaft. The lower comparison disc is provided with 3 mandrils 11 which are distributed along the circumferential direction of the vertical rotating shaft and extend radially. The 3 rotating shafts are uniformly distributed along the circumferential direction of the lower comparison disc. The outer end of the ejector rod, namely the end far away from the vertical rotating shaft, is provided with an elastic layer 12. The elastic layer is of a rubber structure. The ejector pin can be compared the disc and go up horizontal migration down. The rotating mechanism comprises a gear 13 arranged on the vertical rotating shaft, a rack 14 meshed with the gear and a translation mechanism 15 driving the rack to translate back and forth. The translation mechanism is a cylinder. The lower end of the upper comparison disc is provided with a vertical connecting shaft 16 which is arranged in the vertical connecting hole in a penetrating way in a pulling way. The upper end of the vertical connecting shaft is provided with a conical section 17 with a small lower end and a large upper end. The conical surface section 17 is integrated with the inner end motor of the ejector rod. When the comparison disc moves downwards, the conical surface section drives the ejector rod to extend out, the upper end ejector rod is tightly propped against the inner circumferential surface of the inner sleeve through the elastic layer, and the upper end inner sleeve can rotate along with the lower comparison disc. The pressing structure comprises a pressing plate 18 and a lifting mechanism 19 for driving the pressing plate to press the upper comparison disc. The lifting mechanism is a cylinder. The lower surface of the pressing plate is provided with a plurality of pressing rolling balls 20. The supporting plate is provided with a vertical guide rod 21. The base plate 33 is fitted over the vertical guide rods. The base plate is supported on the pallet by springs 22. The supporting plate is fixedly connected with the bottom plate. The spring is a pressure spring. The base plate is provided with a fixed stopper 31 and a movable stopper 23. An inner sleeve wall thickness ratio channel 24 is formed between the fixed stop block and the movable stop block. The upper end of the inner sleeve wall thickness ratio channel is provided with a leading-in port 25. The fixed stop blocks and the movable stop blocks are distributed along the radial direction of the vertical rotating shaft. The fixed stop block is positioned between the vertical rotating shaft and the movable stop block. The fixed stop block is cylindrical. The surface 26 of the movable stopper facing the fixed stopper is a vertical plane perpendicular to the radial direction of the vertical rotation axis. The movable stop block is connected on the supporting plate in a sliding manner along the radial direction of the rotating shaft. The supporting plate is provided with a movable stop position adjusting mechanism 32. The movable stop block position adjusting mechanism is positioned on one side of the movable stop block, which is far away from the fixed stop block. The movable stop position adjustment mechanism comprises a rotary disc 27 abutting on the side of the movable stop remote from the fixed stop. The turntable is eccentrically provided with a vertical rotation shaft 28. The vertical rotating shaft and the fixed stop blocks are distributed along the radial direction of the vertical rotating shaft. The vertical rotating shaft is connected in the threaded through hole 29 on the supporting plate in a threaded manner. When the inner sleeve 1 with the inner diameter and the wall thickness both meeting the design values is sleeved on the lower comparison disc, the wall 30 of the inner sleeve can be inserted into the inner sleeve wall thickness comparison channel, specifically, the sum of the inner diameter of the inner sleeve and half of the wall thickness of the inner sleeve is equal to the distance from the middle point of the inner sleeve wall thickness comparison channel to the axis of the vertical rotating shaft.

When the device is used, the rotating disc is rotated by taking the vertical rotating shaft as a shaft, so that the position of the movable stop block is adjusted to the upper limit value of the wall thickness ratio of the inner sleeve to the width of the channel, which is equal to the wall thickness of the inner sleeve; and sleeving the inner sleeve 1 on the lower comparison disc, wherein if the inner sleeve can be sleeved, the protection requirement of the lower limit value of the inner diameter is indicated, otherwise, the lower limit value of the inner sleeve does not meet the requirement. And then inserting the vertical connecting shaft into the vertical connecting hole, lifting the inner sleeve to see whether the inner sleeve can be sleeved on the upper comparison disc, if not, indicating that the upper limit value of the inner diameter meets the requirement, otherwise, indicating that the upper limit value of the inner diameter of the inner sleeve does not meet the requirement. When the inner diameter meets the requirement, the upper comparison disc is pressed downwards through the pressing structure, so that the conical surface section drives the ejector rod to abut against the inner circumferential surface of the inner sleeve, and the wall of the inner sleeve is inserted into the sleeve wall thickness ratio comparison channel. The rotating mechanism drives the vertical rotating shaft to rotate 360 degrees so as to realize that the inner sleeve rotates 360 degrees, and if the inner sleeve can pass through the inner sleeve wall thickness comparison channel and is not clamped by the inner sleeve wall thickness comparison channel in the process that the inner sleeve rotates 360 degrees, the wall thickness of the inner sleeve does not exceed the upper limit value. And then adjusting the position of the movable stop block to a position where the width of the inner sleeve wall thickness comparison channel is equal to the lower limit value of the inner sleeve wall thickness through the movable stop block position adjusting mechanism, wherein the wall of the inner sleeve is positioned in the lead-in port and is abutted with the lower end surface of the inner sleeve, the inner sleeve is driven to rotate in the opposite direction for 360 degrees through the rotating mechanism, whether the base plate can be jacked up by the spring in the process of rotating for 360 degrees is judged, the inner sleeve wall thickness comparison channel is sleeved on the wall of the inner sleeve, if the base plate is not sleeved on the wall of the inner sleeve in the whole rotating process, the lower limit value of the wall thickness of the inner sleeve is in accordance.