Automatic axle measuring device

Abstract

The invention provides an automatic axle measuring device, which belongs to the technical field of axle measurement and comprises a base, an axle bearing assembly is arranged at the top of the base, an axle blanking assembly is arranged in the base, and an axle leading-out assembly is embedded in the outer wall of one side of the base. The axle discharging assembly comprises a bottom plate arranged in the machine base, four hydraulic cylinders are symmetrically arranged at the top of the bottom plate, the four hydraulic cylinders are fixedly connected with a lifting table through the output ends of one sides of the hydraulic cylinders, the lifting table can penetrate through the top of the machine base, and an arc plate is arranged above the lifting table. According to the invention, the axle can be discharged from one side of the base and guided out after being measured, the axle does not need to be lifted out by using a truss, the unmeasured axle is fed by using the truss in the discharging process of the axle, and the feeding and the discharging are not interfered with each other, so that the time delayed by the discharging of the axle is saved, the large-batch axle measurement is facilitated, and the axle measurement efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of axle measurement, and in particular relates to an automatic axle measurement device. Background Art

[0002] In modern industrial production, axles are key mechanical components, and their dimensional accuracy and quality are crucial to the performance and safety of the entire mechanical system. Traditional axle measurement methods mainly rely on manual operation, which is not only inefficient, but the measurement results are easily affected by the operator's skill level and subjective judgment, resulting in instability and inaccuracy. In addition, manual measurement methods are difficult to meet the needs of large-scale, high-precision production.

[0003] With the development of automation technology, automated axle measuring equipment has emerged. These devices, by integrating advanced sensors, control systems and data processing software, can quickly and accurately measure axle dimensions. This not only improves measurement accuracy and repeatability, but also allows data exchange with other equipment on the production line, realizing the intelligence and informatization of the production process.

[0004] However, due to the heavy weight of the axles, loading and unloading are generally carried out mechanized. The axles need to be lifted in by a truss before measurement, and they also need to be lifted out by the truss after measurement. This makes it impossible to load and unload at the same time. The previous axle needs to be lifted out and the next axle needs to be lifted in before measurement can be carried out. This will delay the time of lifting one axle out. When faced with large-scale measurement, such time loss will be infinitely magnified, greatly reducing the measurement efficiency of the axles.

[0005] Therefore, an axle automatic measuring device is proposed. Summary of the Invention

[0006] The present invention provides an automatic axle measuring device, which aims to solve the above-mentioned problems.

[0007] An embodiment of the present invention provides an automated axle measuring device, comprising a machine base, a top of which is provided with an axle support assembly, an interior of which is provided with an axle blanking assembly, and an outer wall of one side of the machine base is embedded with an axle guide assembly;

[0008] The axle blanking assembly includes: a bottom plate arranged inside the machine base, four hydraulic cylinders symmetrically arranged on the top of the bottom plate, the four hydraulic cylinders are fixedly connected to a lifting platform through the output ends on one side thereof, the lifting platform can pass through the top of the machine base, an arc plate is arranged above the lifting platform, two supporting ramps are symmetrically arranged on the inner side wall of the arc plate, and rotating rollers are embedded in the outer side walls of the two supporting ramps;

[0009] A reduction motor is provided on one outer wall of the lifting platform, and a gear is fixedly connected to the reduction motor through an output end on one side thereof. An arc-shaped tooth plate is welded at the central position of the outer wall of the arc plate, and the gear and the arc-shaped tooth plate are meshed and connected. Two guide bars are symmetrically welded on the outer wall of the arc plate, and a guide opening is opened at the top of the lifting platform near the outer side of the guide bar.

[0010] The cross sections of the guide strip and the guide opening are both T-shaped structures, and the guide strip slides inside the guide opening.

[0011] Furthermore, a fixing fixture and a clamping and positioning fixture are provided on the machine base, the fixing fixture is located on a horizontal side of the clamping and positioning fixture, and the axle is clamped between the fixing fixture and the clamping and positioning fixture.

[0012] Furthermore, the axle guide assembly includes: an oblique rod embedded in the outer wall of one side of the machine base, a C-shaped rod is provided at one end of the oblique rod, a horizontal straight rod is provided at one end of the C-shaped rod, an arc rod is provided at one end of the horizontal straight rod, a U-shaped rod is provided at one end of the arc rod, a vertical straight rod is provided at one end of the U-shaped rod, and cross bars are provided on the outer side walls of the oblique rod, C-shaped rod, horizontal straight rod, arc rod, U-shaped rod and vertical straight rod.

[0013] Furthermore, the axle support assembly includes: a fixed platform provided on the top of the machine base, a three-phase motor is provided on the outer wall of one side of the fixed platform, the three-phase motor is fixedly connected to a screw through the output end on one side, the nut seat on the screw is fixedly connected to a movable frame by a screw, and a supporting roller is rotatably connected to the inner side wall of the movable frame.

[0014] Furthermore, a control box is provided on one side outer wall of the machine base near the axle lead-out assembly, and a servo slide is provided on the top of the machine base, and an axle length measuring assembly and an axle diameter measuring assembly are provided on the movable end of the servo slide, and the axle length measuring assembly is located on one side of the axle diameter measuring assembly.

[0015] Furthermore, the axle length measuring component includes a shell 1 arranged on the top of the movable end of the servo slide, a linear guide rail 1 is arranged inside the shell 1, a support arm 1 is arranged on the movable end of the linear guide rail 1, a protective cover is arranged on one side end of the support arm 1, and a ranging camera is arranged on the other side end of the support arm 1 and the inner side wall of the protective cover.

[0016] Furthermore, the axle diameter measuring assembly includes a second shell arranged on the top of the movable end of the servo slide, a second linear guide rail is arranged inside the second shell, a second support arm is arranged on the movable end of the second linear guide rail, an external detection head is arranged on one side end of the second support arm, and an internal detection head is arranged on the other side end of the second support arm.

[0017] Furthermore, a guide groove is provided on the outer wall of one side of the machine base near the outer side of the axle guide assembly, and a cavity is provided inside the machine base. A through groove is provided on the top of the machine base for the lifting platform to be raised and lowered, and the guide groove and the through groove are both connected to the cavity.

[0018] Furthermore, there are four fixed platforms in total, and the four fixed platforms are grouped into two, and each group of fixed platforms constitutes an axle support assembly, and the support rollers are arranged at an angle of 45 degrees to the horizontal plane.

[0019] Furthermore, the cross bar is used to connect adjacent oblique bars, adjacent C-shaped bars, adjacent horizontal straight bars, adjacent arc bars, adjacent U-shaped bars and adjacent vertical straight bars, and the axle guide assembly is a frame structure.

[0020] The beneficial effects of the present invention are:

[0021] The present invention cooperates with the axle support assembly, the axle blanking assembly and the axle lead-out assembly. After the axle is measured, it can be blanked and led out from one side of the machine base without using a truss to lift it out. During the blanking process of the axle, the axle that has not been measured is loaded using the truss. The loading and unloading do not interfere with each other, saving the time wasted in blanking the axle, facilitating the measurement of a large number of axles, and improving the efficiency of axle measurement.

[0022] The arc plate moves in a circular motion along the axis of the axle, so that when a load-bearing ramp on the arc plate moves to the bottom of the axle, the axle loses the limit on one side. Under the support and guidance of the inclined rod, the axle tilts and rolls out of the machine base, realizing automatic unloading.

[0023] Through the mutual cooperation of the C-shaped rod, the arc rod and the U-shaped rod, the impact force and inertia of the axle during tilting and rolling can be gradually offset, and the axle can be ensured to stay in the limited area, which is convenient for axle collection and subsequent lifting.

[0024] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 This is a schematic diagram of the front side structure of an embodiment of the present invention;

[0027] Figure 2This is a structural schematic diagram of a wheel bearing support assembly according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic structural diagram of an axle blanking assembly according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic structural diagram of an axle lead-out assembly according to an embodiment of the present invention;

[0030] Figure 5 Schematic diagram of the rear structure of an embodiment of the present invention;

[0031] Figure 6 This is a schematic structural diagram of an axle length measuring assembly according to an embodiment of the present invention;

[0032] Figure 7 This is a schematic structural diagram of an axle diameter measuring assembly according to an embodiment of the present invention;

[0033] Figure 8 For the embodiment of the present invention Figure 5 A is an enlarged schematic diagram;

[0034] Figure numerals: 1, machine base; 2, fixing fixture; 3, clamping and positioning fixture; 4, axle support assembly; 41, fixed platform; 42, three-phase motor; 43, lead screw; 44, moving frame; 45, supporting roller; 5, axle blanking assembly; 51, bottom plate; 52, hydraulic cylinder; 53, lifting platform; 54, arc plate; 541, load-bearing inclined platform; 542, rotating roller; 55, reduction motor; 56, gear; 57, arc tooth plate; 58, guide bar; 59, guide port; 6, axle lead-out assembly; 6 1. Inclined rod; 62. C-shaped rod; 63. Horizontal straight rod; 64. Arc rod; 65. U-shaped rod; 66. Vertical straight rod; 67. Cross rod; 7. Control box; 8. Axle length measuring assembly; 81. Housing 1; 82. Linear guide 1; 83. Support arm 1; 84. Protective cover; 85. Distance measuring camera; 9. Axle diameter measuring assembly; 91. Housing 2; 92. Linear guide 2; 93. Support arm 2; 94. External detection head; 95. Internal detection head; 10. Servo slide; 11. Axle. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention. The same figure marks in the drawings represent the same components. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Reference Figure 1-4 The embodiment of the present invention provides an automated axle measuring device, comprising a base 1, an axle support assembly 4 is provided on the top of the base 1, an axle blanking assembly 5 is provided inside the base 1, and an axle guide assembly 6 is embedded in an outer wall of one side of the base 1;

[0037] Among them, the axle blanking component 5 includes: a bottom plate 51 arranged inside the machine base 1, four hydraulic cylinders 52 are symmetrically arranged on the top of the bottom plate 51, and a hydraulic system for providing hydraulic oil to the hydraulic cylinders 52 is arranged inside the machine base 1. The hydraulic system oil hydraulic pump, hydraulic mailbox and hydraulic oil pipe are composed of the four hydraulic cylinders 52. The output end of one side of the four hydraulic cylinders 52 is fixedly connected to a lifting platform 53. The lifting platform 53 can pass through the top of the machine base 1. An arc plate 54 is arranged above the lifting platform 53. The inner side wall of the arc plate 54 is symmetrically provided with two bearing inclined platforms 541. The two bearing inclined platforms The facing side walls of 541 are set at an angle of 120 degrees, which can support axles 11 of different diameters. The two load-bearing inclined platforms 541 can support the axle 11, thereby lifting the axle 11 and achieving the lifting of the axle 11. The outer walls of the two load-bearing inclined platforms 541 are embedded with rotating rollers 542. The rollers 542 can reduce the friction with the axle 11, so that when the arc plate 54 moves axially, the axle 11 and the load-bearing inclined platforms 541 on the arc plate 54 can be relatively guided, reducing wear and ensuring smooth rotation of the axle 11.

[0038] A reduction motor 55 is provided on the outer wall of one side of the lifting platform 53. The reduction motor 55 is fixedly connected to a gear 56 through the output end on one side. An arc-shaped toothed plate 57 is welded at the center of the outer wall of the arc plate 54. The gear 56 and the arc-shaped toothed plate 57 are meshed and connected. Through the meshing connection, when the gear 56 rotates, the gear 56 can pull the arc-shaped toothed plate 57 to move. Two guide bars 58 are symmetrically welded on the outer wall of the arc plate 54. A guide opening 59 is opened at the top of the lifting platform 53 near the outer side of the guide bar 58.

[0039] The cross-sections of the guide bar 58 and the guide opening 59 are both T-shaped, and the guide bar 58 slides inside the guide opening 59. The sliding limiter allows the arc-shaped tooth plate 57 to move in an axial arc shape, thereby allowing one end of the arc-shaped tooth plate 57 to be separated from the axle 11.

[0040] The specific implementation method is as follows: when unloading the axle after measurement, the hydraulic cylinder 52 is controlled to drive the lifting platform 53 to move upward through the output end on one side thereof, and the lifting platform 53 is ejected from the top of the machine base 1. The two supporting ramps 541 on the arc plate 54 move toward the axle 11. The rollers 542 on the supporting ramps 541 contact the outer wall of the axle 11. The two supporting ramps 541 lift the axle 11. After the axle 11 is supported, the lifting platform 53 is controlled to move downward, and the axle 11 enters the interior of the machine base 1. At this time, the reduction motor 55 is controlled to drive the gear 56 to rotate through the output end on one side thereof. Through the gear 56 and the arc-shaped tooth plate 57 The meshing between them and the guiding sliding of the guide bar 58 in the guide opening 59 cause the arc plate 54 to perform circular motion. Under the action of the gravity of the axle 11 and the rolling contact between the axle 11 and the roller 542, the axle 11 remains in place when the arc plate 54 performs circular motion. As the arc plate 54 continues to move, one of the load-bearing ramps 541 on the arc plate 54 moves to the bottom of the axle 11. After one side of the axle 11 loses its limit, the axle 11 tilts and rolls out of the machine base 1, realizing the unloading of the axle 11. During the unloading process of the axle 11, the unmeasured axle 11 is loaded using a truss, and the loading and unloading do not interfere with each other, thereby improving the efficiency of the axle 11 measurement.

[0041] In a further preferred embodiment of the present invention, Figure 1 and Figure 5 As shown, a fixing fixture 2 and a clamping and positioning fixture 3 are provided on the machine base 1. The fixing fixture 2 is located on a horizontal side of the clamping and positioning fixture 3. The axle 11 is clamped between the fixing fixture 2 and the clamping and positioning fixture 3.

[0042] The specific implementation method is as follows: when positioning and clamping the axle 11, the axle 11 is placed between the fixing fixture 2 and the clamping and positioning fixture 3 using a truss manipulator, and the axle 11 is positioned and clamped using the fixing fixture 2 and the clamping and positioning fixture 3.

[0043] In a further preferred embodiment of the present invention, Figure 1 and Figure 4As shown, a guide groove is provided on the outer wall of one side of the machine base 1 near the outer side of the axle guide assembly 6, and a cavity is provided inside the machine base 1. A through groove for the lifting platform 53 to be raised and lowered is provided on the top of the machine base 1. The guide groove and the through groove are both connected to the cavity. The hollow space inside the machine base 1 provides space for the blanking and exporting of the axle 11. The axle guide assembly 6 includes: an inclined rod 61 embedded in the outer wall of one side of the machine base 1, a C-shaped rod 62 is provided at one end of the inclined rod 61, a horizontal straight rod 63 is provided at one end of the C-shaped rod 62, an arc rod 64 is provided at one end of the horizontal straight rod 63, and an arc rod 64 is provided at one end of the arc rod A U-shaped rod 65 is provided at one end of 64, and a vertical straight rod 66 is provided at one end of the U-shaped rod 65. A cross bar 67 is provided on the outer side walls of the oblique rod 61, the C-shaped rod 62, the horizontal straight rod 63, the arc rod 64, the U-shaped rod 65 and the vertical straight rod 66. The cross bar 67 is used to connect adjacent oblique rods 61, adjacent C-shaped rods 62, adjacent horizontal straight rods 63, adjacent arc rods 64, adjacent U-shaped rods 65 and adjacent vertical straight rods 66. The axle derivation assembly 6 is a frame structure, through which the axle 11 can be more fully supported and derivate, thereby preventing the frame structure from being damaged by the pressure of the axle 11;

[0044] The specific implementation method is as follows: when the axle 11 is being exported, the axle 11 moves downward and contacts the inclined rod 61, and the inclined rod 61 provides a supporting force for the axle 11. When the axle 11 loses its limit and rolls down, it rolls downward along the inclined rod 61. When the axle 11 encounters the C-shaped rod 62, since the C-shaped rod 62 is a convex structure, the axle 11 is blocked and reduces its downward rolling speed, and rolls over the C-shaped rod 62 to the horizontal straight rod 63. At this time, the axle 11 still has a certain inertia. Under the action of inertia, the axle 11 continues to roll and rolls upward along the arc rod 64. The inertia of the axle 11 is gradually balanced and reset to roll. Under the obstruction of the C-shaped rod 62, the axle 11 stays above the horizontal straight rod 63, realizing the export of the axle 11, and then another truss manipulator is used to grab the axle 11.

[0045] In a further preferred embodiment of the present invention, Figure 1-2 As shown, the axle support assembly 4 includes: a fixed platform 41 provided on the top of the machine base 1, a total of four fixed platforms 41 are provided, and the four fixed platforms 41 are grouped in two, and each group of fixed platforms 41 constitutes an axle support assembly 4, a three-phase motor 42 is provided on one side outer wall of the fixed platform 41, the three-phase motor 42 is fixedly connected to a lead screw 43 through an output end on one side thereof, a nut seat on the lead screw 43 is fixedly connected to a movable frame 44 by screws, the movable frame 44 and the fixed platform 41 are slidably connected, and a supporting roller 45 is rotatably connected to the inner side wall of the movable frame 44, and the supporting roller 45 is arranged at an angle of 45 degrees to the horizontal plane;

[0046] The specific implementation method is as follows: when the axle 11 is positioned, clamped and supported, the axle 11 is placed on the two axle support assemblies 4 by the truss manipulator, and the supporting rollers 45 contact and support the axle 11 to ensure the stability of the support of the axle 11. When the axle 11 is unloaded, the supporting ramp 541 in the axle unloading assembly 5 lifts the axle 11, and the three-phase motor 42 is controlled to drive the screw 43 to rotate through the output end on one side thereof, and the movable frame 44 on the screw 43 moves in a straight line, and the two movable frames 44 move in opposite directions. At this time, the supporting rollers 45 are separated from the axle 11, and the axle 11 is completely supported by the supporting ramp 541. Of course, by controlling the spacing between the two supporting rollers 45, axles 11 of different diameters can also be supported.

[0047] In a further preferred embodiment of the present invention, Figure 1 and Figure 5 As shown, a control box 7 is provided on one side of the outer wall of the base 1 near the axle guide assembly 6. A control system is provided in the control box 7. A servo slide 10 is provided on the top of the base 1. An axle length measuring assembly 8 and an axle diameter measuring assembly 9 are provided on the movable end of the servo slide 10. The axle length measuring assembly 8 is located on one side of the axle diameter measuring assembly 9.

[0048] The specific implementation method is: using the control box 7 to program the control program, thereby realizing the automatic measurement of the axle 11, measuring the length of the axle 11 through the axle length measuring component 8, and measuring the outer diameter of the axle 11 through the axle diameter measuring component 9.

[0049] In a further preferred embodiment of the present invention, Figure 5 、 Figure 6 and Figure 8 As shown, the axle length measuring assembly 8 includes a housing 81 disposed on the top of the movable end of the servo slide 10, a linear guide rail 82 is disposed inside the housing 81, a support arm 83 is disposed on the movable end of the linear guide rail 82, a protective cover 84 is disposed on one side of the support arm 83, and a rangefinder camera 85 is disposed on the other side of the support arm 83 and the inner side wall of the protective cover 84;

[0050] The specific implementation method is as follows: when measuring the length of the axle 11, the servo slide 10 pulls the housing 81 to move linearly, and the support arm 83 moves along the outer wall of the axle 11. At this time, the two ranging cameras 85 are started. The position of the servo slide 10 when the ranging camera 85 captures the axle 11 is the measurement starting point. As the ranging camera 85 moves linearly, when the axle 11 leaves the shooting range of the ranging camera 85, the position of the servo slide 10 is the measurement end point. The distance between the starting point and the end point is the length of the axle 11.

[0051] In a further preferred embodiment of the present invention, Figure 5、 Figure 7 and Figure 8 As shown, the axle diameter measuring assembly 9 includes a second housing 91 disposed on the top of the movable end of the servo slide 10. A second linear guide rail 92 is disposed inside the second housing 91. A second support arm 93 is disposed on the movable end of the second linear guide rail 92. An external detection head 94 is disposed on one side of the second support arm 93, and an internal detection head 95 is disposed on the other side of the second support arm 93.

[0052] The specific implementation method is as follows: when measuring the outer diameter of the axle 11, the outer detection head 94 and the inner detection head 95 are adjusted to the horizontal side of the axis of the axle 11, and the linear guide rail 2 92 is used to pull the support arm 2 93 to move linearly. When the outer detection head 94 is controlled to move toward the outer wall of the axle 11 and contact it, the position of the moving end of the linear guide rail 2 92 is recorded. When the inner detection head 95 is controlled to move toward the outer wall of the axle 11 and contact it, the position of the moving end of the linear guide rail 2 92 is recorded. The difference between the records on both sides is the outer diameter value of the axle 11.

[0053] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An automated axle measuring device, comprising a base (1), characterized in that: An axle support assembly (4) is provided on the top of the machine base (1), an axle blanking assembly (5) is provided inside the machine base (1), and an axle lead-out assembly (6) is embedded on one side outer wall of the machine base (1); The axle blanking assembly (5) comprises: a bottom plate (51) arranged inside the machine base (1); four hydraulic cylinders (52) are symmetrically arranged on the top of the bottom plate (51); the four hydraulic cylinders (52) are fixedly connected to a lifting platform (53) through the output ends on one side thereof; the lifting platform (53) can pass through the top of the machine base (1); an arc plate (54) is arranged above the lifting platform (53); two supporting ramps (541) are symmetrically arranged on the inner side wall of the arc plate (54); and rotating rollers (542) are embedded in the outer side walls of the two supporting ramps (541); A reduction motor (55) is provided on the outer wall of one side of the lifting platform (53), and the reduction motor (55) is fixedly connected to a gear (56) through the output end of one side thereof. An arc-shaped tooth plate (57) is welded at the central position of the outer wall of the arc plate (54), and the gear (56) and the arc-shaped tooth plate (57) are meshed and connected. Two guide bars (58) are symmetrically welded on the outer wall of the arc plate (54), and a guide opening (59) is opened at the outer position of the guide bar (58) at the top of the lifting platform (53); The cross sections of the guide strip (58) and the guide opening (59) are both T-shaped structures, and the guide strip (58) slides inside the guide opening (59).

2. The automated axle measuring device according to claim 1, characterized in that: A fixing fixture (2) and a clamping and positioning fixture (3) are provided on the machine base (1); the fixing fixture (2) is located on a horizontal side of the clamping and positioning fixture (3); and an axle (11) is clamped between the fixing fixture (2) and the clamping and positioning fixture (3).

3. The axle automatic measuring device according to claim 1, characterized in that: The axle guide assembly (6) comprises: an oblique rod (61) embedded in the outer wall of one side of the machine base (1); a C-shaped rod (62) is provided at one end of the oblique rod (61); a horizontal straight rod (63) is provided at one end of the C-shaped rod (62); an arc rod (64) is provided at one end of the horizontal straight rod (63); a U-shaped rod (65) is provided at one end of the arc rod (64); a vertical straight rod (66) is provided at one end of the U-shaped rod (65); and a cross bar (67) is provided on the outer side walls of the oblique rod (61), the C-shaped rod (62), the horizontal straight rod (63), the arc rod (64), the U-shaped rod (65) and the vertical straight rod (66).

4. The automated axle measuring device according to claim 1, characterized in that: The axle support assembly (4) comprises: a fixed platform (41) arranged on the top of the machine base (1); a three-phase motor (42) is arranged on the outer wall of one side of the fixed platform (41); the three-phase motor (42) is fixedly connected to a lead screw (43) through an output end on one side thereof; a nut seat on the lead screw (43) is fixedly connected to a movable frame (44) through a screw; and a supporting roller (45) is rotatably connected to the inner side wall of the movable frame (44).

5. The axle automatic measuring device according to claim 1, characterized in that: A control box (7) is provided on one side of the outer wall of the machine base (1) near the axle lead-out assembly (6), and a servo slide (10) is provided on the top of the machine base (1). An axle length measuring assembly (8) and an axle diameter measuring assembly (9) are provided on the movable end of the servo slide (10), and the axle length measuring assembly (8) is located on one side of the axle diameter measuring assembly (9).

6. The axle automatic measuring device according to claim 5, characterized in that: The axle length measuring assembly (8) includes a housing (81) disposed on the top of the movable end of the servo slide (10), a linear guide rail (82) is disposed inside the housing (81), a support arm (83) is disposed on the movable end of the linear guide rail (82), a protective cover (84) is disposed on one side end of the support arm (83), and a rangefinder camera (85) is disposed on the other side end of the support arm (83) and the inner side wall of the protective cover (84).

7. The automated axle measuring device according to claim 5, characterized in that: The axle diameter measuring assembly (9) includes a second housing (91) disposed on the top of the movable end of the servo slide (10), a second linear guide rail (92) is disposed inside the second housing (91), a second support arm (93) is disposed on the movable end of the second linear guide rail (92), an external detection head (94) is disposed on one side end of the second support arm (93), and an internal detection head (95) is disposed on the other side end of the second support arm (93).

8. The automated axle measuring device according to claim 1, characterized in that: A guide groove is provided on one side outer wall of the machine base (1) near the outer side of the axle guide assembly (6), and a cavity is provided inside the machine base (1). A through groove for the lifting platform (53) to be lifted and lowered is provided on the top of the machine base (1), and both the guide groove and the through groove are connected to the cavity.

9. The automatic axle measuring device according to claim 4, characterized in that: There are four fixed platforms (41) in total, and the four fixed platforms (41) are grouped in two. Each group of fixed platforms (41) constitutes an axle support assembly (4). The support rollers (45) are arranged at an angle of 45 degrees to the horizontal plane.

10. The automatic axle measuring device according to claim 3, characterized in that: The crossbar (67) is used to connect adjacent oblique bars (61), adjacent C-shaped bars (62), adjacent horizontal straight bars (63), adjacent arc bars (64), adjacent U-shaped bars (65) and adjacent vertical straight bars (66); the axle derivation assembly (6) is a frame structure.

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