CN214842876U - Coaxiality compensation device for wheel hanging rack of cart - Google Patents
Coaxiality compensation device for wheel hanging rack of cart Download PDFInfo
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- CN214842876U CN214842876U CN202121536109.9U CN202121536109U CN214842876U CN 214842876 U CN214842876 U CN 214842876U CN 202121536109 U CN202121536109 U CN 202121536109U CN 214842876 U CN214842876 U CN 214842876U
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Abstract
The utility model discloses a cart wheel stores pylon axiality compensation arrangement comprises supporting axle, regulating plate, connecting screw, elastomer, first adjusting bolt, second adjusting bolt, first adjusting spring, second adjusting spring, bearing plate, adaptation round pin. The adjusting plate is fixedly connected with the supporting shaft; the support plate is fixedly connected with the adapting pin; the connecting screw and the elastic body are arranged in the connecting screw mounting hole in the supporting shaft, and the connecting screw is in threaded connection with the adaptive pin; the adjusting bolt penetrates through the adjusting plate and the adjusting spring to be in threaded connection with the supporting plate. The invention provides a coaxiality compensation device of a cart wheel hanger with a simple structure, which enables the spatial angle of a supporting shaft and a supporting plate to be adjusted more flexibly through connecting screws and supporting shaft connecting screw mounting holes. The supporting shaft is hollow inside, so that the weight of the coaxiality compensation device is reduced, the number of parts of the device is reduced, the device is convenient to manufacture and assemble, and the coaxiality of the mounting shaft of the detection device and the wheel axle is convenient to adjust.
Description
Technical Field
The utility model relates to an automobile inspection field especially relates to a cart wheel stores pylon axiality compensation arrangement.
Background
When the image detection or photoelectric detection method is adopted to detect the toe-in of the wheel of the cart, the wheel axle of the wheel of the cart is required to be parallel to the mounting shaft of the device, so that the testing precision and the measuring repeatability precision are ensured. The traditional wheel hanging frame used for four-wheel positioning detection is not provided with a coaxiality adjusting mechanism, so that the measurement precision of the four-wheel positioning toe-in of the cart is influenced. This cart wheel stores pylon axiality compensation arrangement is applied to traditional stores pylon, can adjust the axiality of check out test set installation axle and wheel shaft, is favorable to improving toe-in measurement accuracy. The existing coaxiality regulator has the problems of multiple parts, complex manufacture and inconvenient assembly.
Therefore, those skilled in the art have endeavored to develop a device for compensating the coaxiality of the wheel hanger of the cart, which has a simple structure, is convenient to manufacture and assemble, and is convenient to adjust the coaxiality of the mounting shaft of the detection device and the wheel axle.
Disclosure of Invention
The utility model aims at providing a cart wheel stores pylon axiality compensation arrangement, simple structure, the assembly of being convenient for, can conveniently adjust the axiality.
In order to achieve the purpose, the utility model provides a cart wheel hanger coaxiality compensation device which is characterized by comprising a supporting shaft, an adjusting plate, a connecting screw, an elastic body, a first adjusting bolt, a second adjusting bolt, a first adjusting spring, a second adjusting spring, a supporting plate and an adapting pin;
the supporting shaft is provided with a camera positioning groove;
one end of the supporting shaft is provided with a supporting surface of the supporting shaft;
a connecting screw mounting hole is formed in the supporting shaft;
a second end of the connecting screw mounting hole is provided with a pressing surface and a limiting hole;
the first end of the connecting screw is provided with a clamping surface;
the elastic body is arranged between the clamping surface and the pressing surface;
the adjusting plate is provided with a first through hole, a second through hole and a supporting shaft mounting hole;
the bearing plate is provided with a first adjusting hole, a second adjusting hole and an adapting pin mounting hole;
the first end of the adapting pin is provided with an adapting pin pressure bearing surface;
the adjusting plate is fixedly connected with the supporting shaft;
the support plate is fixedly connected with the adapter pin;
the connecting screw is configured to be fitted into the connecting screw mounting hole;
the second end of the connecting screw is arranged to penetrate through the elastic body and the limiting hole to be fixedly connected with the adapting pin;
the adaptive pin pressure bearing surface is contacted with the supporting shaft supporting surface;
the first adjusting bolt penetrates through the first through hole of the adjusting plate and is in threaded connection with the first adjusting hole of the supporting plate;
the second adjusting bolt penetrates through the second through hole of the adjusting plate and is in threaded connection with the second adjusting hole of the supporting plate;
the first adjusting spring is arranged between the adjusting plate and the supporting plate and is penetrated by the first adjusting bolt;
the second adjusting spring is arranged between the adjusting plate and the supporting plate and is penetrated by the second adjusting bolt;
further, the pressing surface at the second end of the connecting screw mounting hole is a revolution surface; the molded line of the revolution surface is a smooth curve; the tangent lines at both ends of the smooth curve are along the horizontal direction.
Furthermore, the clamping surface of the connecting screw is a revolution surface, and the molded line of the revolution surface is a wavy line.
Further, the supporting surface of the supporting shaft at the second end of the supporting shaft is a circular table surface.
Further, the adapter pin bearing surface of the first end of the adapter pin is a spherical crown surface.
Furthermore, the inner surface of the limiting hole is a circular table surface or a cylindrical surface.
Further, the elastomer is a rubber pad.
Further, the support plate is made of aluminum alloy materials, rubber materials and stainless steel materials.
The utility model has the advantages that:
(1) the utility model provides a simple structure's cart wheel stores pylon axiality compensation arrangement, the convenient manufacturing and assembly of adjusting the axiality of check out test set installation axle and wheel shaft.
(2) Through setting up the connecting screw and the connecting screw mounting hole on the supporting axle for the regulation of supporting axle and wheel axle axis axiality is more nimble.
(3) The supporting shaft of the coaxiality compensation device is arranged to be hollow inside, so that the overall weight of the device is reduced, the number of parts of the device is reduced, the manufacturing is simpler, and the assembly is more convenient.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 is a schematic view of the overall structure of a cart wheel hanger coaxiality compensation device according to a preferred embodiment of the present invention;
FIG. 2 is an assembled cross-sectional view of the support shaft and adapter pin and connecting screw of a preferred embodiment of the present invention;
FIG. 3 is a side view of a support shaft according to a preferred embodiment of the present invention;
FIG. 4 is a schematic view of a first end of a support shaft according to a preferred embodiment of the present invention;
FIG. 5 is a schematic view of an adjustment plate according to a preferred embodiment of the present invention;
FIG. 6 is a schematic view of a support plate of a preferred embodiment of the present invention;
fig. 7 is a cross-sectional view of an assembly of a preferred embodiment of the present invention using wavy line clamping surfaces and smooth curved compression surfaces with cooperating elastomeric bodies, bearing surfaces and bearing surfaces;
fig. 8 is a wave-shaped line graph of the wave-shaped line clamping surface according to a preferred embodiment of the present invention;
fig. 9 is a smooth curve plot of a smooth curve type compression face of a preferred embodiment of the present invention;
fig. 10 is a graph of the smoothness of a smooth curve type elastomer in accordance with a preferred embodiment of the present invention;
fig. 11 is a partial cross-sectional view of the wave-shaped linear retaining surface of the connection screw according to a preferred embodiment of the present invention.
In the drawings: 1-supporting shaft, 2-adjusting plate, 3-connecting screw, 4-elastic body, 5-supporting plate, 6-adapter pin, 7-first adjusting bolt, 8-second adjusting bolt, 9-first adjusting spring, 10-second adjusting spring, 101-pressing surface, 102-supporting surface, 103-limiting hole, 104-camera positioning groove, 105-connecting screw mounting hole, 201-supporting shaft mounting hole, 202-first through hole, 203-second through hole, 204-first adjusting arm, 205-second adjusting arm, 301-clamping surface, 501-adapter pin mounting hole, 502-first adjusting hole, 503-second adjusting hole, 601-bearing surface.
Detailed Description
The technical contents of the preferred embodiments of the present invention will be more clearly understood and appreciated by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments, and the scope of the invention is not limited to the embodiments described herein.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
Example 1
The embodiment of the present embodiment will be further explained with reference to fig. 1 to 6. The cart hanger coaxiality compensation device of the embodiment comprises a supporting shaft 1, an adjusting plate 2, a connecting screw 3, an elastic body 4, a supporting plate 5, an adapting pin 6, a first adjusting bolt 7, a second adjusting bolt 8, a first adjusting spring 9 and a second adjusting spring 10.
The supporting shaft 1 penetrates through a supporting shaft mounting hole 201 of the adjusting plate 2, and the adjusting plate 2 is welded with an adjusting plate welding positioning surface 105 on the supporting shaft 1; the adapter pin 6 passes through the adapter pin mounting hole 501 of the support plate 5, and the support plate 5 is welded with the support plate 5 welding positioning surface 602 on the adapter pin 6.
The elastic body 4 and the connecting screw 3 are sequentially installed in the connecting screw installation hole 105 of the supporting shaft 1, the rod part of the connecting screw 3 penetrates through the elastic body 4 and the limiting hole 103, the external thread of the second end of the rod part of the connecting screw 3 is matched with the internal thread of the first end of the adapting pin 6 to form threaded connection, the clamping surface 301 and the pressing surface 101 of the connecting screw 3 press the elastic body 4 tightly, and the supporting surface 102 of the second end of the supporting shaft 1 is in contact with the pressure bearing surface 601 of the adapting pin 6.
The first through hole 202 and the second through hole 203 on the adjusting plate 2 are smooth holes; the first adjustment hole 502 and the second adjustment hole 503 of the support plate 5 are both threaded holes. The first adjusting bolt 7 is fitted into the first adjusting hole 502 of the support plate 5 through the first through hole 202 of the adjusting plate 2 and the first adjusting spring 9. The second adjusting bolt 8 passes through the second through hole 203 of the adjusting plate 2 and the second adjusting spring 10, and is fitted into the second adjusting hole 503 of the support plate 5.
When the camera measuring head of the cart four-wheel aligner is mounted on the support shaft 1, the positioning pin in the camera measuring head is embedded in the camera positioning groove 104 on the support shaft 1.
The first adjusting bolt 7 is rotated, so that the supporting shaft 1 can swing in a plane formed by the axis of the first adjusting bolt 7 and the axis of the supporting shaft 1, and the swinging range is 20 degrees; the second adjusting bolt 8 is rotated to enable the support shaft 1 to swing in a plane formed by the axis of the second adjusting bolt 8 and the axis of the support shaft 1, and the swing range is 20 degrees.
The included angle formed by the first adjusting arm 204 and the second adjusting arm 205 on the adjusting plate 2 is equal to the included angle between the two planes, and the included angle is in the range of 85-95. Therefore, by adjusting the first adjusting bolt 7 and the second adjusting bolt 8 in combination, the axis of the support shaft 1 can be positioned in a conical area with a cone angle of 20 degrees.
When the cart locator hanger is hung on a wheel, due to assembly errors and deformation of a wheel rim, an axis of a mounting seat hole of the adapter pin 6 on the cart locator hanger is not parallel to an axis of the wheel, an included angle beta exists, and the value of the beta is usually less than 5 degrees. The angle β is in the region of the positioning of the bearing shaft 1 relative to the adjustable 20-degree cone angle of the adapter pin 6. After the adapting pin 6 is arranged in an adapting pin 6 mounting seat hole on a cart hanging frame, the first adjusting bolt 7 and the second adjusting bolt 8 are adjusted comprehensively, so that the included angle between the axis of the supporting shaft 1 and the wheel axle can be smaller than 0.001 degree. When the included angle between the axis of the supporting shaft 1 and the wheel axle is less than 0.01 degrees, the measuring precision of toe-in, camber and kingpin inclination angle of the large wheel axle positioning is not influenced. Therefore, the first adjusting bolt 7 and the second adjusting bolt 8 can meet the measurement requirement of large wheel axle positioning for adjusting the supporting shaft 1.
Example 2
The embodiment is further optimized on the basis of embodiment 1, and particularly provides a coaxiality compensation device for a wheel hanger of a large vehicle, which comprises a supporting shaft, an adjusting plate, a connecting screw, an elastic body, a first adjusting bolt, a second adjusting bolt, a first adjusting spring, a second adjusting spring, a supporting plate and an adapting pin;
the support shaft 1 has a length of 200 mm and 300mm, preferably 220 mm. The outer diameter of the bearing shaft 1 is 15-25mm, preferably 20 mm.
The supporting shaft 1 is provided with a camera positioning groove 104.
The distance from the camera positioning slot 104 to the support surface 102 is 140 mm and 300 mm. The cross section of the camera positioning groove 104 is rectangular or circular arc. The camera positioning groove 104 is a mounting position of the stylus apparatus.
The second end of the bearing shaft 1 is provided with a bearing surface 102.
The bearing surface 102 is provided at the end of the second end of the bearing shaft 1. The bearing surfaces 102 cooperate with the pressure-receiving surfaces 601, and the bearing surfaces 102 axially press the pressure-receiving surfaces 601 while the support shaft 1 is restricted from radial movement by the pressure-receiving surfaces 601, thereby ensuring stable positioning of the support shaft 1 and the adapter pin 6 when the adjustment of the coaxiality of the support shaft 1 with respect to the axle is completed.
The support shaft 1 is provided with a coupling screw mounting hole 105 inside.
The coupling screw mounting hole 105 has an inner diameter of 10-12mm, and preferably, the coupling screw mounting hole 105 has an inner diameter of 11.5 mm. The coupling screw mounting hole 105 provides a mounting space for the coupling screw 3. The attachment screw 3 is received through the attachment screw receiving hole 105 from the first end of the screw receiving hole. The attachment screw 3 is freely rotatable within the attachment screw mounting hole 105. The attachment screw mounting holes 105 in the support shaft 1 provide a closed environment for the attachment screws 3, preventing the attachment screws from rusting, reducing oxidation of the elastomer 4, and reducing the weight of the support shaft 1.
The second end of the connecting screw mounting hole 105 is provided with a pressing surface 101 and a limiting hole 103.
The compression surface 101 is disposed around the entrance of the first end of the retainer hole 103. The pressing surface 101 provides a force-applying surface for the coupling screw 3, by means of which pressing surface 101 the bearing surface 102 and the pressure-bearing surface 601 are pressed together.
A first end of the limiting hole 103 is connected to the pressing surface 101, and a second end of the limiting hole 103 is connected to the supporting surface 102. The clearance between the inner diameter of the limiting hole 103 and the outer diameter of the rod part of the connecting screw 3 is 0.5-5 mm. The limit hole 103 and the rod part of the connecting screw 3 have proper clearance, so that the effective deflection range of the axis of the supporting shaft 1 relative to the axis of the adapting pin 6, namely the coaxiality adjusting range, is ensured, and the adjusting range is 0-30 degrees. When the coaxiality is adjusted to a proper position, the limiting hole 103 also applies radial constraint force to the connecting screw 3, and the stability of the relative position of the supporting shaft 1 and the adapting pin 6 is ensured.
The first end of the connecting screw 3 is provided with a clamping surface 301.
The clamping surface 301 is arranged at the junction of the head part and the rod part of the connecting screw 3. The clearance between the position-retaining surface 301 and the inner diameter of the attachment screw-receiving hole 105 is 0.5 to 2mm, preferably 1 mm. The clamping surface 301 and the connecting screw mounting hole 105 have proper clearance, and the connecting screw mounting hole 105 does not influence the radial rotation of the head of the connecting screw 3 when the coaxiality is adjusted, so that the axial line of the supporting shaft 1 has a deflection range of 0-30 degrees relative to the axial line of the connecting screw 3, namely a coaxiality adjusting range; the diameter of the clamping surface 301 is 3-5mm larger than that of the limiting hole 103. The engagement surface 301 is larger in inner diameter than the stopper hole 103, and ensures that the head of the coupling screw 3 is engaged in the coupling screw mounting hole 105. The clamping surface 301 is contacted with the elastic body 4, when the diameter of the clamping surface 301 is 3-5mm larger than that of the limiting hole 103, enough contact area with the elastic body 4 can be ensured, under the same tension of the connecting bolt rod part, the compressive stress received by the elastic body 4 can be reduced, and the service life of the elastic body 4 is prolonged.
The shape and material of the elastic body 4 are determined according to the matching requirements of the clamping surface 301 and the pressing surface 101. The elastic body 4 is provided with a through hole in the axial direction for the rod part of the connecting screw 3 to pass through. The elastic body 4 has a deformation space to provide a proper angle adjustment range for the support shaft 1.
The adjusting plate 2 is provided with a first through hole 202, a second through hole 203 and a support shaft mounting hole 201.
The first through hole 202 is in clearance fit with the first end of the first adjusting bolt 7, the clearance is 0.5-2mm, and preferably, the clearance is 1 mm; the second through hole 203 is in clearance fit with the first end of the second adjusting bolt 8, the clearance is 0.5-2mm, and preferably, the clearance is 1 mm.
The inner diameter of the support shaft mounting hole 201 depends on the connection manner of the support shaft 1 and the adjustment plate 2. When the supporting shaft 1 is connected with the adjusting plate 2 in an interference fit manner, the interference magnitude between the supporting shaft mounting hole 201 and the supporting shaft 1 is 0.1-0.3 mm. When the supporting shaft 1 is connected with the adjusting plate 2 in an interference fit manner, the second end of the supporting shaft 1 is also provided with an installation reference surface, so that the adjusting plate 2 is approximately parallel to the installation reference surface, the supporting shaft 1 is approximately perpendicular to the adjusting plate 2, and the installation error is reduced.
When the supporting shaft 1 and the adjusting plate 2 are welded, the supporting shaft mounting hole 201 is in clearance fit with the supporting shaft 1, and the clearance is 0.5-1 mm. When the supporting shaft 1 is welded with the adjusting plate 2, the second end of the supporting shaft 1 is also provided with a welding surface, at least three welding spots are arranged on the welding part corresponding to the welding surface around the supporting shaft mounting hole 201 of the adjusting plate 2, stable welding is guaranteed, the welding surface is used as a reference surface, the adjusting plate 2 is approximately parallel to the welding surface when welding is achieved, the supporting shaft 1 is approximately perpendicular to the adjusting plate 2, and installation errors are reduced.
The support plate 5 is provided with a first adjustment hole 502, a second adjustment hole 503, and an adapter pin mounting hole 501.
The first adjusting hole 502 is in threaded connection with the second end of the first adjusting bolt 7; the second adjusting hole 503 is threadedly coupled to a second end of the second adjusting bolt 8. The first adjustment hole 502 and the second adjustment hole 503 are both threaded holes.
The inner diameter of the fitting pin installation hole 501 depends on the connection manner of the fitting pin 6 and the support plate 5. When the adapter pin 6 is connected with the support plate 5 in an interference fit manner, the interference magnitude between the adapter pin mounting hole 501 and the adapter pin 6 is 0.1-0.3 mm. When the adapting pin 6 is connected with the supporting plate 5 in an interference fit manner, the first end of the adapting pin 6 is also provided with an installation reference surface, so that the supporting plate 5 is approximately parallel to the installation reference surface, the adapting pin 6 is approximately perpendicular to the supporting plate 5, and the installation error is reduced.
When the adapter pin 6 is welded with the support plate 5, the adapter pin mounting hole 501 is in clearance fit with the adapter pin 6, and the clearance is 0.5-1 mm. When the adapter pin 6 is welded with the support plate 5, the first end of the adapter pin 6 is also provided with a welding surface, at least three welding spots are arranged on the welding part corresponding to the welding surface around the adapter pin mounting hole 501 of the support plate 5, so that the welding is stable, the welding surface is used as a reference surface, the support plate 5 is approximately parallel to the welding surface when the welding is realized, the support plate 5 is approximately vertical to the adapter pin 6, and the installation error is reduced.
The first end of the adapter pin 6 is provided with a pressure surface 601.
The pressure faces are provided at the end of the first end of the adapter pin 6. The bearing surfaces 601 cooperate with the bearing surfaces 102, and the bearing surfaces 601 limit the radial movement of the bearing shaft 1 while bearing the axial pressure of the bearing surfaces 102, thereby ensuring the positional stability of the bearing shaft 1 and the adapter pin 6 when the coaxiality of the bearing shaft 1 with respect to the axle is adjusted.
The adjusting plate 2 is fixedly connected with the supporting shaft 1.
The fixed connection of the adjusting plate 2 and the supporting shaft 1 can be interference fit connection and welding. The included angle between the normal line of the adjusting plate 2 and the supporting shaft 1 is designed to be 0 degree. Due to machining and assembling errors, when the included angle between the normal of the adjusting plate 2 and the axis of the supporting shaft 1 is 0-10 degrees, coaxiality adjustment can be achieved.
The support plate 5 is fixedly connected with an adapter pin 6.
The fixed connection of the support plate 5 and the adapter pin 6 can be interference fit connection or welding. The angle between the normal of the support plate 5 and the adapter pin 6 is designed to be 0 degrees. Due to machining and assembling errors, when the included angle between the normal of the bearing plate 5 and the axis of the adaptive pin 6 is 0-10 degrees, coaxiality adjustment can be realized.
The attachment screw 3 is configured to be fitted into the attachment screw mounting hole 105; an elastic body 4 is arranged between the clamping surface 301 and the pressing surface 101; the second end of the connecting screw 3 is arranged to pass through the limiting hole 103 to be fixedly connected with the adapter pin 6; the pressure bearing surface 601 contacts the bearing surface 102.
The connecting screw 3 is installed in the connecting screw installation hole 105, the rod part of the connecting screw 3 penetrates through the limiting hole 103, and the head part is clamped in the connecting screw installation hole 105 because the diameter of the clamping surface 301 is 3-5mm larger than that of the limiting hole 103; an elastic body 4 is further arranged between the clamping surface 301 and the pressing surface 101, and the axial force applied to the clamping surface 301 of the connecting screw 3 by the elastic body 4 is 100-500N; the second end of the rod part of the connecting screw is fixedly connected with the adaptive pin 6, and the fixed connection can be threaded connection or interference fit connection; since the elastomer 4 also exerts an axial force of 100 and 500N on the pressing surface 101, the bearing surface 102 at the second end of the bearing shaft 1 is in contact with the bearing surface at the first end of the adapter pin 6, while the bearing surface 102 also exerts a force on the bearing surface in a direction perpendicular to the bearing surface 102. Bearing surface 102 thus constrains the pressure bearing surface within its range of application of force while the pressure bearing surface also limits the rotational and axial movement of bearing surface 102.
The first adjusting bolt 7 passes through the first through hole 202 of the adjusting plate 2 and is in threaded connection with the first adjusting hole 502 of the supporting plate 5; the second adjusting bolt 8 passes through the second through hole 203 of the adjusting plate 2 to be in threaded connection with the second adjusting hole 503 of the supporting plate 5; the first adjusting spring 9 is arranged between the adjusting plate 2 and the support plate 5 and is penetrated by the first adjusting bolt 7; the second adjusting spring 10 is disposed between the adjusting plate 2 and the support plate 5 and is penetrated by the second adjusting bolt 8.
The elastic forces of the first and second adjusting springs 9 and 10 cause a tendency of separation between the support plate 5 and the adjusting plate 2; the first and second adjusting bolts 7 and 8 limit the separation of the support plate 5 and the adjusting plate 2. When the first adjusting bolt 7 is screwed down, the adjusting plate 2 and the supporting plate 5 move towards each other, and the supporting shaft 1 deflects towards the first adjusting threaded hole; when the first adjusting screw 7 is loosened, the bearing shaft 1 is deflected away from the first adjusting threaded bore. When the second adjusting bolt 8 is screwed down, the supporting shaft 1 deflects towards the second adjusting threaded hole; when the second adjusting screw 8 is loosened, the bearing shaft 1 is deflected away from the second adjusting threaded bore. The included angle between the supporting shaft 1 and the adaptive pin 6 is adjusted by loosening or tightening the first adjusting bolt 7 and the second adjusting bolt 8; thereby realizing the adjustment of the coaxiality of the supporting shaft 1 and the wheel shaft.
In a preferred embodiment of the present invention, the pressing surface 101 of the second end of the connecting screw mounting hole 105 is a revolution surface; the molded line of the revolution surface is a smooth curve; the tangent lines at both ends of the smooth curve are along the horizontal direction.
The outer diameter of the pressing surface 101 is the same as the inner diameter of the connecting screw mounting hole 105, and the inner diameter of the pressing surface 101 is the same as the diameter of the first end of the limiting hole 103; the height of the smooth curve is 2-3 mm; the tangent length of the two ends of the smooth curve is 0.2-0.6 mm.
The inner diameter of the pressing surface 101 gradually decreases from the first end to the second end to form a concave groove which can be matched with the corresponding elastic body 4, and the pressing surface 101 in the form can provide a placing space for the elastic body 4, prevent the elastic body 4 from moving radially and reduce the abrasion of the elastic body 4; the axial force of the elastic body 4 from the pressing surface 101 and the clamping surface 301 can be decomposed into the inclined direction along the molded line of the pressing surface 101, and the service life of the elastic body 4 is prolonged.
In a preferred embodiment of the present invention, the fastening surface 301 of the connecting screw 3 is a surface of revolution, and the profile of the surface of revolution is a wavy line.
A rotary surface with a wavy line shaped is used as a clamping surface 301 of the connecting screw 3, the inner diameter of the clamping surface 301 is equal to the outer diameter of the rod part of the connecting screw 3, and the gap between the outer diameter of the clamping surface 301 and the inner diameter of the connecting screw mounting hole 105 is 0.5-1 mm. The clamping surface 301 is a revolution surface of a wavy line and is suitable for matching with the rubber elastic body 4 which is also the wavy line, the clamping surface 301 is perfectly matched with the elastic body 4 by the matching, the axial pressure and the local stress on the elastic body 4 are dispersed, the elastic body 4 also applies radial constraint force to the clamping surface 301, the radial moving range of the connecting screw 3 is limited, and a stable positioning environment is provided for the connecting screw 3.
In a preferred embodiment of the present invention, the bearing surface 102 of the second end of the bearing shaft 1 is a circular table.
The minimum inner diameter of the circular table top is the same as the maximum inner diameter of the limiting hole 103, and the difference between the minimum inner diameter and the maximum inner diameter of the circular table top is 2-6mm, preferably 4 mm; the height of the circular table surface is 1-5mm, and preferably, the height is 3 mm.
A circular table surface is used as the supporting surface 102, so that the supporting surface 102 can be matched with a pressure bearing surface at the first end of the adapter pin 6, the pressure bearing surface 601 can provide complete linear radial constraint for the circular table surface, and the radial movement of the supporting shaft 1 is limited; meanwhile, when the coaxiality is adjusted, the bearing surface can keep the supporting shaft 1 stable, and the measuring accuracy is improved.
In a preferred embodiment of the present invention, the bearing surface 601 of the first end of the adapter pin 6 is a spherical cap surface.
The pressure bearing surface 601 is a spherical crown surface which occupies 1/3-1/2 of the whole sphere surface area; the radius of the spherical cap surface is 4-8mm, and the inner diameter of the bearing surface 102 is preferably 4, 5 and 6 mm.
The pressure bearing face 601 is a face that mates with the bearing face 102. The bearing surface adopts a spherical cap surface device, when the axes of the supporting shaft 1 and the adapter pin 6 have a deviation angle, the adapter pin 6 and the supporting surface 102 can still have a circumferential contact surface, and complete radial constraint can be provided; when the wheel hanger of the cart rotates, the adapter pin 6 and the supporting shaft 1 can not move and rotate relatively.
In a preferred embodiment of the present invention, the inner surface of the limiting hole 103 is a circular table or a cylindrical surface.
When the circular table surface is used as the inner surface of the limiting hole 103, the difference between the maximum diameter and the minimum diameter of the circular table surface is 2-5mm, preferably 3 mm; the height of the circular table surface is 4-6mm, and preferably, the height is 5 mm. The inner surface of the limiting hole 103 is a circular table surface, so that the aperture of the limiting hole 103 is gradually enlarged from the first end to the second end, the range of the left-right swing of the connecting screw 3 is provided, and the coaxiality of the device is adjusted.
A cylindrical surface is used as the inner surface of the limiting hole 103, and the clearance between the inner diameter of the cylindrical surface and the outer diameter of the rod part of the connecting screw 3 is 3mm, 4mm and 5 mm; the height of the cylindrical surface is 4-6mm, preferably 5 mm. The inner surface of the limiting hole 103 is a cylindrical surface, so that the process manufacturing is simple, and the manufacturing error is small.
In a preferred embodiment of the present invention, the elastic body 4 is a rubber pad.
The clearance between the outer diameter of the rubber pad and the inner diameter of the connecting screw mounting hole 105 is-0.5-0.5 mm; the clearance between the inner diameter of the rubber pad and the outer diameter of the rod part of the connecting screw 3 is-0.5-0.5 mm.
Depending on the form of the detent surface 301 and the compression surface 101 selected. The elastic body 4 is made of rubber materials, the deformation space of the rubber materials is large, and a proper range is provided for the angle adjustment of the supporting shaft 1; the end surface of the first end of the elastic body 4 adopts a wave line-shaped revolution surface matched with the clamping surface 301; the second end surface of the elastic body 4 adopts a smooth curved revolution surface matched with the pressing surface 101. The elastic body 4 is matched with the clamping surface 301 and the pressing surface 101, so that the radial movement of the elastic body and the clamping surface are mutually limited, and the accurate positioning of the elastic body and the pressing surface is ensured.
In a preferred embodiment of the present invention, the support plate 5 is made of an aluminum alloy material, a rubber material, or a stainless steel material. The support plate 5 is made of cast iron material, carbon steel material, aluminum alloy material, rubber material or stainless steel material. The thickness of the support plate 5 is 5-10mm, preferably 6mm, 7mm, 8 mm. The adjusting plate 2 is made of the same material as the support plate 5.
Example 4
This embodiment is an improvement of embodiment 1 or embodiment 2, and the improvement is mainly in the shapes of the elastic body 4, the support surface 102, and the pressure receiving surface.
Fig. 7 is a sectional view of the assembly of the present invention using wavy line clamping surface 301 and smooth curved pressing surface 101 and elastomer 4, bearing surface 102 and bearing surface cooperating therewith. The cart hanger coaxiality compensation device of the embodiment comprises a bearing surface 102 and a pressure bearing surface 601.
The bearing surface 102 at the second end of the bearing shaft 1 cooperates with the bearing surface at the first end of the adapter pin 6.
The bearing surface 601 of the adapter pin 6 is a spherical crown surface with a large curvature, and the bearing surface 102 of the bearing shaft 1 is a circular table surface with a sufficient height. Therefore, when bearing face 102 is mated with pressure bearing face 601, bearing face 102 may provide good axial restraint and good wrap around pressure bearing face 601, and pressure bearing face 601 may also provide good axial and radial restraint to bearing face 102.
The bearing surface 102 and the pressure bearing surface 601 have relatively large areas, so that the contact area of the two is large. The contact area between the bearing surface 102 and the bearing surface 601 is large, so the stress area is also large, when the coaxiality is adjusted, the support area of the adaptive pin 6 on the supporting shaft 1 is large, the supporting effect on the supporting shaft 1 is better, and the stability of the supporting shaft 1 after deflection is ensured; the contact area between the supporting surface 102 and the pressure bearing surface 601 is large, the bearing capacity of the supporting structure is also large, when a camera measuring head of the cart positioning instrument is arranged on the supporting shaft 1, the adjustment coaxiality cannot be affected, and the accuracy of measuring head data is ensured.
In addition, the cooperation of the connecting screw 3, the elastic body 4 and the pressing surface 101 is a group of supporting structures; the bearing surface 102 of the bearing shaft 1 and the bearing surface 601 of the adapter pin 6 are also a set of bearing structures. The two sets of support structures exist simultaneously, and mutually relieve the support pressure of each other.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the teachings of this invention without undue experimentation. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concepts of the present invention are all within the scope of protection defined by the claims.
Claims (8)
1. The coaxiality compensation device of the cart wheel hanging frame is characterized by comprising a supporting shaft, a connecting screw, an elastic body, an adjusting plate, a supporting plate, an adapting pin, a first adjusting bolt, a second adjusting bolt, a first adjusting spring and a second adjusting spring;
the supporting shaft is provided with a camera positioning groove;
one end of the supporting shaft is provided with a supporting surface of the supporting shaft;
a connecting screw mounting hole is formed in the supporting shaft;
a second end of the connecting screw mounting hole is provided with a pressing surface and a limiting hole;
the first end of the connecting screw is provided with a clamping surface;
the elastic body is arranged between the clamping surface and the pressing surface;
the adjusting plate is provided with a first through hole, a second through hole and a supporting shaft mounting hole;
the bearing plate is provided with a first adjusting hole, a second adjusting hole and an adapting pin mounting hole;
the first end of the adapting pin is provided with an adapting pin pressure bearing surface;
the adjusting plate is fixedly connected with the supporting shaft;
the support plate is fixedly connected with the adapter pin;
the connecting screw is configured to be fitted into the connecting screw mounting hole;
the second end of the connecting screw is arranged to penetrate through the elastic body and the limiting hole to be fixedly connected with the adapting pin;
the adaptive pin pressure bearing surface is contacted with the supporting shaft supporting surface;
the first adjusting bolt penetrates through the first through hole of the adjusting plate and is in threaded connection with the first adjusting hole of the supporting plate;
the second adjusting bolt penetrates through the second through hole of the adjusting plate and is in threaded connection with the second adjusting hole of the supporting plate;
the first adjusting spring is arranged between the adjusting plate and the supporting plate and is penetrated by the first adjusting bolt;
the second adjusting spring is disposed between the adjusting plate and the support plate and is penetrated by the second adjusting bolt.
2. The cart wheel hanger coaxiality compensation apparatus of claim 1, wherein said compression surface at said second end of said attachment screw mounting hole is a surface of revolution; the molded line of the revolution surface is a smooth curve; the tangent lines at both ends of the smooth curve are along the horizontal direction.
3. The cart wheel hanger coaxiality compensation apparatus of claim 1, wherein said attachment screw seating surface is a surface of revolution, and the contour of said surface of revolution is a wavy line.
4. The cart wheel hanger coaxiality compensation apparatus of claim 1 wherein said support shaft bearing surface of said support shaft second end is a circular table surface.
5. The cart wheel hanger coaxiality compensation apparatus of claim 1, wherein said adapter pin pressure bearing surface of said adapter pin first end is a spherical crown surface.
6. The cart wheel hanger coaxiality compensation device of any one of claims 1 to 5, wherein the inner surface of the limiting hole is a circular table surface or a cylindrical surface.
7. The cart wheel hanger coaxiality compensation apparatus of any one of claims 1 to 5, wherein said elastomer is a rubber pad.
8. The large vehicle wheel hanger coaxiality compensation apparatus according to any one of claims 1 to 5, wherein the support plate is an aluminum alloy plate, a rubber plate, or a stainless steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121536109.9U CN214842876U (en) | 2021-07-07 | 2021-07-07 | Coaxiality compensation device for wheel hanging rack of cart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121536109.9U CN214842876U (en) | 2021-07-07 | 2021-07-07 | Coaxiality compensation device for wheel hanging rack of cart |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214842876U true CN214842876U (en) | 2021-11-23 |
Family
ID=78813134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121536109.9U Active CN214842876U (en) | 2021-07-07 | 2021-07-07 | Coaxiality compensation device for wheel hanging rack of cart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214842876U (en) |
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2021
- 2021-07-07 CN CN202121536109.9U patent/CN214842876U/en active Active
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