Mixing drum coaxiality detection device and detection method

Abstract

The invention provides a mixing drum coaxiality detection device and method, and the device comprises a head and tail frame type positioner main body and a translation device, and also comprises a supporting device erected on the translation device, the head and tail frame type positioner main body is arranged at the two ends of the axis direction of a mixing drum, and the supporting device is arranged on the translation device. The clamping device is arranged at one end of the first accompanying tool to clamp the first accompanying tool, the clamping device is further fixedly connected with the rotating device, and the rotating device is fixedly connected with a rotating shaft of the head and tail frame type positioner body; the detection device assembly is arranged at the end socket flange, the second accompanying tool, the roller path and the feeding pipe and comprises an end socket flange coaxiality detection device, an accompanying tool coaxiality detection device, a roller path coaxiality detection device and a feeding pipe coaxiality detection device. The tool is used for measuring the outer arc of each test point, the actual circle center of the test point is simulated, the actual circle center is compared with the reference circle center of the tool, if the actual circle center exceeds a threshold value, the test point is unqualified, and the method is higher in detection precision and accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of production and detection of special vehicle parts, and in particular to a mixing drum coaxiality detection device and a detection method. Background Art

[0002] The mixing drum is installed on the upper part of the sub-frame of the special vehicle mixer truck. The front end of the mixing drum is connected to the reducer, and the rear end is placed above the supporting wheel through the roller. When the reducer drives the mixing drum to rotate, the mixing drum rotates around the central axis. If the roller and the flange are not coaxial at this time, the roller will jump and cause eccentric wear of the roller; if the feed pipe and the flange are not coaxial, the feed pipe will interfere with the matching device. Therefore, in the manufacturing process of the mixing drum, the coaxiality of the roller and the feed pipe relative to the flange is very important.

[0003] At present, the coaxiality of the mixing drum is mostly measured manually, which is difficult to measure, has low accuracy, and is not easy to ensure product quality. In the prior art, the flange of the mixing drum is mainly placed on the positioner through the tooling, the raceway is placed on the roller frame, and the dial indicator is installed on the roller frame. The measuring end of the dial indicator is placed on the end face of the raceway. When the positioner drives the mixing drum to rotate, the values ​​displayed on the dial indicator are manually observed and recorded to calculate the coaxiality deviation. This technical solution only determines the coaxiality of the mixing drum by detecting the rotational jump of each measuring point of the mixing drum, and the accuracy is low. In addition, the reading errors of different people are large. In order to avoid the reading errors, taking the average of multiple readings will result in high labor costs and increased measurement time costs. In addition, the dial indicator is adsorbed on the roller frame by magnetic force, and the change of the position of the dial indicator itself may cause inaccurate measurement results. Therefore, a solution for automated detection and analysis of coaxiality is needed. Summary of the invention

[0004] In order to solve the problem that the coaxiality detection of the mixing drum in the above-mentioned prior art is manual detection, which is difficult to measure and has low precision. The present invention proposes a mixing drum coaxiality detection device and detection method, which aims to use mechanical and electrical equipment instead of manual coaxiality detection of the mixing drum, reduce the difficulty of manual measurement, and improve the level of automation. Multiple sets of coaxiality detection devices are configured on the head and tail frame positioner to detect the coaxiality of each position relative to the flange during the rotation of the mixing drum, and the coaxial parameters of each mixing drum are analyzed at any time as needed to facilitate coaxiality repair and improve product quality.

[0005] The present invention is realized through the following technical scheme: it comprises a head and tail frame type positioner main body and a translation device arranged parallel to the axis direction of the mixing drum, and also comprises a supporting device mounted on the translation device and fixedly connected to the mixing drum, the head and tail frame type positioner main body is arranged at both ends of the axis direction of the mixing drum, a clamping device is arranged at one end of the first accompanying tooling to clamp the first accompanying tooling, the clamping device is also fixedly connected to the rotating device, and the rotating device is fixedly connected to the rotating shaft of the head and tail frame type positioner main body; the detection device assembly is arranged on the head flange, the second accompanying tooling, and the roller The detection device assembly comprises a head flange coaxiality detection device, an accompanying tooling coaxiality detection device, a raceway coaxiality detection device and a feed pipe coaxiality detection device. The head flange coaxiality detection device is arranged at the head flange and is perpendicular to the axis of the mixing drum. The accompanying tooling coaxiality detection device is arranged at the second accompanying tooling and is perpendicular to the axis of the mixing drum. The raceway coaxiality detection device is arranged at the raceway and is perpendicular to the axis of the mixing drum. The feed pipe coaxiality detection device is arranged at the feed pipe and is parallel to the axis of the mixing drum.

[0006] Furthermore, the head flange coaxiality detection device includes a first support frame which is fixedly connected to the head and tail frame positioner body at one end and fixedly connected to the fixed end of the first linear drive device at the other end and is vertically arranged, a first linear drive device which is arranged perpendicular to the axis of the mixing drum and with the output end facing the mixing drum, and a first linear guide mechanism which is arranged parallel to the first linear drive device and fixed on the first support frame, the first linear guide mechanism includes a guide rail and a slider, the slider of the first linear guide mechanism is fixedly connected to the output end of the first linear drive device; it also includes a first mounting plate fixedly connected to the slider of the first linear guide mechanism, a first distance sensor fixedly connected to the first mounting plate and arranged along the axis direction of the mixing drum, a first support plate fixedly connected to the first mounting plate, and a second distance sensor fixed to the first support plate and arranged perpendicular to the axis of the mixing drum.

[0007] Furthermore, the accompanying tooling coaxiality detection device includes a second support frame fixedly connected at one end to the translation device and the other end to the second linear drive device and the second linear guide mechanism, a second linear drive device fixedly connected at a fixed end to the second support frame and an output end connected to a slider of the second linear guide mechanism, and a second linear guide mechanism fixedly connected to the guide rail and the second support frame, the second linear drive device and the second linear guide mechanism are arranged perpendicular to the axis of the mixing drum, and also include a second mounting plate fixedly connected to the slider of the second linear guide mechanism and a third distance sensor fixedly mounted on the second mounting plate and arranged perpendicular to the axis of the mixing drum.

[0008] Furthermore, the raceway coaxiality detection device includes a third support frame, a third linear drive device, a third linear guide mechanism, a fourth distance sensor and a third mounting plate. The third support frame connects the third linear drive device and the third linear guide mechanism. The third mounting plate is fixedly connected to the slider of the third linear guide mechanism. The fourth distance sensor is fixedly mounted on the third mounting plate. The third linear drive device, the third linear guide mechanism and the fourth distance sensor are all arranged perpendicular to the axis of the mixing drum.

[0009] Furthermore, the feed pipe coaxiality detection device includes a fourth support frame having one end fixedly connected to the translation device and the other end fixedly connected to a fixed end of a fourth linear drive device and a guide rail of a fourth linear guide mechanism, a fourth linear drive device and a fourth linear guide mechanism arranged in parallel and perpendicular to the axis of the mixing drum, and a second support plate fixedly connected to an output end of the fourth linear drive device and a slider of the fourth linear guide mechanism, and also includes a fifth linear drive device, a fifth linear guide mechanism, a sixth linear drive device, a sixth linear guide mechanism, a fourth mounting plate and a fifth distance sensor fixedly connected in sequence from the second support plate in a direction away from the translation device, the fifth linear drive device, the fifth linear guide mechanism The linear guide mechanism, the sixth linear drive device and the sixth linear guide mechanism are arranged parallel to the axis of the mixing drum, the fifth distance sensor is arranged perpendicular to the axis of the mixing drum, the fixed end of the fifth linear drive device is fixedly connected to the second support plate and the guide rail of the fifth linear guide mechanism respectively, the slider of the fifth linear guide mechanism is fixedly connected to the output end of the fifth linear drive device and the fixed end of the sixth linear drive device, the guide rail of the sixth linear guide mechanism is fixedly connected to the fixed end of the sixth linear drive device, the slider of the sixth linear guide mechanism is fixedly connected to the fourth mounting plate and the output end of the sixth linear drive device, and the output ends of the fifth linear drive device and the sixth linear drive device face the mixing drum.

[0010] Furthermore, the number of the head flange coaxiality detection device, the accompanying tooling coaxiality detection device and the raceway coaxiality detection tooling are all two, and they are symmetrically arranged relative to the axis of the mixing drum.

[0011] Furthermore, the first linear drive device, the second linear drive device, the third linear drive device, the fourth linear drive device, the fifth linear drive device and the sixth linear drive device are one of telescopic cylinders, telescopic electric cylinders, air cylinders or hydraulic cylinders.

[0012] Furthermore, the first distance sensor, the second distance sensor, the third distance sensor, the fourth distance sensor and the fifth distance sensor are digital dial indicators or laser sensors.

[0013] A detection method applicable to a mixing drum coaxiality detection device according to the present invention comprises the following steps:

[0014] Step 1: According to the model of the mixing drum, the total length and outer diameter parameters of the mixing drum are obtained, the height of the head and tail frame positioner body and the relative distance between the translation device and the head and tail frame positioner body are adjusted, the mixing drum is placed on the supporting device, and the clamping device clamps the first accompanying tooling;

[0015] Step 2: The output ends of the first linear drive device, the second linear drive device, the third linear drive device, the fourth linear drive device, the fifth linear drive device and the sixth linear drive device are extended to respectively send the first distance sensor, the second distance sensor, the third distance sensor, the fourth distance sensor and the fifth distance sensor to corresponding positions;

[0016] Step 3: The head-to-tail positioner body drives the rotating device to rotate at a speed n, the unit is rad / s; the sampling interval of the first distance sensor, the second distance sensor, the third distance sensor, the fourth distance sensor and the fifth distance sensor is T, the unit is s;

[0017] Step 4: Process the data collected by the first distance sensor in step 3 to obtain the offset of the first accompanying tooling, that is, the offset of the mixing drum, so as to obtain the actual axis of the mixing drum;

[0018] Step 5: Plot the data detected by the second distance sensor, the third distance sensor, the fourth distance sensor and the fifth sensor in step 3 on the same plane, respectively, and obtain the simulated circles of the head flange, the second accompanying tooling, the raceway and the feed pipe, thereby obtaining the center of the simulated circle. Combined with the actual axis of the mixing drum obtained in step 4, the distance from the center of the simulated circle to the actual axis can be obtained. If the distance is greater than the set threshold, the coaxiality of the position is unqualified, otherwise the coaxiality of the position is qualified.

[0019] Furthermore, the relationship between the sampling interval T and the rotation speed n of the rotating device in step 3 is: T*n=1 / 36; the threshold value set in step 5 is 3 mm; and the corresponding position in step 2 is 10 cm away from the detection surface.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention designs an automated detection device to replace the original manual detection, saving manpower and time costs.

[0022] 2. The present invention uses a tool to measure the outer arc of each test point, simulates the actual center of the test point, and compares it with the tool reference center. If it exceeds the threshold, it is unqualified. This method has higher detection accuracy and precision than manually using percentage to detect test point jumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the mixing drum structure.

[0024] Figure 2 It is a schematic diagram of the overall structure of the detection device in the present invention.

[0025] Figure 3 for Figure 2 Top view of the .

[0026] Figure 4 It is a partial enlarged view of the head flange coaxiality detection device in the present invention.

[0027] Figure 5 It is a partial enlarged view of the feed pipe coaxiality detection device in the present invention.

[0028] Figure 6 for Figure 5 Schematic diagram of the expansion.

[0029] Figure 7 It is a schematic diagram of the orientation of each sensor in the present invention.

[0030] Figure 8 This is a schematic diagram of the working status of the feed pipe coaxiality detection device.

[0031] Fig. 9 Schematic diagram of a method for drawing a simulated circle in the detection method of the present invention.

[0032] Indicated in the figure:

[0033] 1. Mixing drum; 2. Head and tail frame positioner body; 3. Clamping device; 4. Rotating device; 5. Translation device; 6. Support device; 7. Detection device assembly; 11. Head flange; 12. Front cone section; 13. Cylindrical section; 14. Rear cone section; 15. Roller; 16. Feed pipe; 17. First accompanying tooling; 18. Second accompanying tooling; 71. Head flange coaxiality detection device; 72. Coaxiality detection device of accompanying tooling; 73. Roller coaxiality detection device; 74. Feed pipe coaxiality detection device; 711. First support Frame; 712, first linear drive device; 713, first linear guide mechanism; 714, first distance sensor; 715, second distance sensor; 716, first mounting plate; 717, first support plate; 741, fourth support frame; 742, fourth linear drive device; 743, fourth linear guide mechanism; 744, second support plate; 745, fifth linear drive device; 746, fifth linear guide mechanism; 747, sixth linear drive device; 748, sixth linear guide mechanism; 749, fifth distance sensor. DETAILED DESCRIPTION

[0034] Advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments thereof, which are given by way of example only with reference to the accompanying drawings.

[0035] like Figure 1 The figure shows a schematic diagram of the overall structure of the mixing drum 1. The mixing drum 1 is composed of a head flange 11, a front cone section 12, a cylindrical section 13 and a rear cone section 14 in the axial direction. The position away from the sealing flange 11 is the feed pipe 16. The cylindrical section 13 has the largest outer diameter. The conical surface of the front cone section 12 faces the head flange 11, and the conical surface of the rear cone section 14 faces the inlet pipe 16. The raceway 15 is arranged on the rear cone section 14. The first accompanying tool 17 is fixedly connected to the head flange 11, and the second accompanying tool 18 is an overall annular structure installed on the rear cone section 14 between the cylindrical section 13 and the raceway 15. The first accompanying tool 17 and the second accompanying tool 18 are used to provide support for the rotation of the mixing drum 1. The two accompanying tools flow through the production process of the mixing drum 1. After the welding of the mixing drum 1 is completed, the tooling is removed and used for the next mixing drum 1.

[0036] like Figure 2 As shown, the present invention provides a mixing drum coaxiality detection device, including a head and tail frame positioner body 2, a clamping device 3, a rotating device 4, a translation device 5, a supporting device 6 and a detection device assembly 7. The translation device 5 is arranged parallel to the axis direction of the mixing drum 1, and the supporting device 6 is mounted on the translation device 5. The head and tail frame positioner body 2 is arranged at both ends of the axis direction of the mixing drum 1. The clamping device 3 is arranged at one end of the first accompanying tool 17 for clamping the first accompanying tool 17. The clamping device 3 is also fixedly connected to the rotating device 4, and the rotating device 4 is fixedly connected to the rotating shaft of the head and tail frame positioner body 2. The clamping device 3 is used to lock the first accompanying tool 17 to prevent the mixing drum 1 from falling when rotating on the equipment. The detection device assembly 7 is arranged at the head flange 11, the second accompanying tool 18, the raceway 15 and the feed pipe 16, and is used to detect the coaxiality of the head flange 11, the second accompanying tool 18, the raceway 15 and the feed pipe 16.

[0037] like Figure 3As shown, the detection device assembly 7 includes a head flange coaxiality detection device 71, a companion tooling coaxiality detection device 72, a raceway coaxiality detection device 73, and a feed pipe coaxiality detection device 74. The head flange coaxiality detection device 71 is arranged at the head flange 11 and is perpendicular to the axis of the mixing drum 1, the companion tooling coaxiality detection device 72 is arranged at the second companion tooling 18 and is perpendicular to the axis of the mixing drum 1, the raceway coaxiality detection device 73 is arranged at the raceway 15 and is perpendicular to the axis of the mixing drum 1, and the feed pipe coaxiality detection device 74 is arranged at the feed pipe 16 and is parallel to the axis of the mixing drum 1. The head flange coaxiality detection device 71 is used to detect the coaxiality of the head flange 11 and the end face distance variation of the first companion tooling 17. The companion tooling coaxiality detection device 72 is used to detect the coaxiality of the second companion tooling 18. The raceway coaxiality detection device 73 is used to detect the coaxiality of the raceway 15. The feed pipe coaxiality detection device 74 is used to detect the coaxiality of the feed pipe 16 .

[0038] like Figure 4 As shown, the head flange coaxiality detection device 71 comprises a first support frame 711, a first linear drive device 712, a first linear guide mechanism 713, a first distance sensor 714, a second distance sensor 715, a first mounting plate 716 and a first support plate 717. The first support frame 711 is vertically arranged with one end fixedly connected to the head and tail frame positioner body 2, and the other end fixedly connected to the fixed end of the first linear drive device 712, so as to support and fix the entire head flange coaxiality detection device 71. The first linear drive device 712 is arranged perpendicular to the axis of the mixing drum 1, and the output end faces the mixing drum 1. The first linear guide mechanism 713 is arranged parallel to the first linear drive device 712 and fixed on the first support frame 711. The first linear guide mechanism 713 comprises a guide rail and a slider, the slider is fixedly connected to the output end of the first linear drive device 712, and the first mounting plate 716 is fixedly connected to the slider of the first linear guide mechanism 713. The first distance sensor 714 is fixedly connected to the first mounting plate 716 and is arranged along the axis of the mixing drum 1. The first support plate 717 is fixedly connected to the first mounting plate 716. The second distance sensor 715 is fixed on the first support plate 717 and is arranged perpendicular to the axis of the mixing drum 1. The number of the head flange coaxiality detection devices 71 is preferably two, which are symmetrically arranged relative to the axis of the mixing drum 1.

[0039] The accompanying tooling coaxiality detection device 72 includes a second support frame, a second linear drive device, a second linear guide mechanism, a third distance sensor and a second mounting plate. The second support frame is fixedly connected to the translation device 4, the second linear drive device and the second linear guide mechanism to play a supporting role. The second linear drive device and the second linear guide mechanism are arranged perpendicular to the axis of the mixing drum 1. The fixed end of the second linear drive device is fixedly connected to the second support frame, and the output end is connected to the slider of the second linear guide mechanism. The guide rail of the second linear guide mechanism is fixedly connected to the second support frame. The second mounting plate is fixedly connected to the slider of the second linear guide mechanism. The third distance sensor is fixedly mounted on the second mounting plate and is arranged perpendicular to the axis of the mixing drum 1. The number of the accompanying tooling coaxiality detection device 72 is preferably two, which are symmetrically arranged relative to the axis of the mixing drum 1.

[0040] The raceway coaxiality detection device 73 includes a third support frame, a third linear drive device, a third linear guide mechanism, a fourth distance sensor and a third mounting plate. The raceway coaxiality detection device 73 is arranged in the same manner as the accompanying tooling coaxiality detection device 72. The difference is that the raceway coaxiality detection device 73 is arranged at the raceway 15, and the accompanying tooling coaxiality detection device 72 is arranged at the second accompanying tooling 18. That is, the third support frame connects the third linear drive device and the third linear guide mechanism, the third mounting plate is fixedly connected to the slider of the third linear guide mechanism, and the fourth distance sensor is fixedly mounted on the third mounting plate. The third linear drive device, the third linear guide mechanism and the fourth distance sensor are all arranged perpendicular to the axis of the mixing drum 1. The number of the raceway coaxiality detection devices 73 is preferably two, which are symmetrically arranged relative to the axis of the mixing drum 1.

[0041] like Figure 5As shown, it is a partial enlarged view of the feed tube coaxiality detection device 74. The feed tube coaxiality detection device 74 includes a fourth support frame 741, a fourth linear drive device 742, a fourth linear guide mechanism 743, a second support plate 744, a fifth linear drive device 745, a fifth linear guide mechanism 746, a sixth linear drive device 747, a sixth linear guide mechanism 748 and a fifth distance sensor 749. One end of the fourth support frame 741 is fixedly connected to the translation device 5, and the other end is fixedly connected to the fixed end of the fourth linear drive device 742 and the guide rail of the fourth linear guide mechanism 743. The fourth linear drive device 742 and the fourth linear guide mechanism 743 are arranged in parallel and perpendicular to the axis of the mixing drum 1. The second support plate 744 is fixedly connected to the output end of the fourth linear drive device 742 and the slider of the fourth linear guide mechanism 743. The fifth linear drive device 745, the fifth linear guide mechanism 746, the sixth linear drive device 747 and the sixth linear guide mechanism 748 are arranged parallel to the axis of the mixing drum 1. The fifth linear drive device 745, the fifth linear guide mechanism 746, the sixth linear drive device 747, the sixth linear guide mechanism 748, the fourth mounting plate and the fifth distance sensor 749 are sequentially fixedly connected from the second support plate 744 to the direction away from the translation device 5. The fifth distance sensor 749 is arranged perpendicular to the axis of the mixing drum 1. The fixed end of the fifth linear drive device 745 is fixedly connected to the second support plate 744 and the guide rail of the fifth linear guide mechanism 746 respectively. The slider of the fifth linear guide mechanism 746 is fixedly connected to the output end of the fifth linear drive device 745 and the fixed end of the sixth linear drive device 747. The guide rail of the sixth linear guide mechanism 748 is fixedly connected to the fixed end of the sixth linear drive device 747, and the slider of the sixth linear guide mechanism 748 is fixedly connected to the fourth mounting plate and the output end of the sixth linear drive device 747. The output ends of the fifth linear drive device 745 and the sixth linear drive device 747 face toward the mixing drum 1. The number of the feed pipe coaxiality detection device 74 is preferably one.

[0042] like Figure 6 and Figure 8 , which is a schematic diagram of the feed pipe coaxiality detection device 74 in the mixing drum coaxiality detection device designed by the present invention when it is fully unfolded.

[0043] like Figure 7 As shown, it is a schematic diagram of the measuring points of the detection device designed by the present invention. In the figure, A and B are the measuring points of the head flange coaxiality detection device 71, C is the measuring point of the accompanying tooling coaxiality detection device 72, D is the measuring point of the raceway coaxiality detection device 73, and E is the measuring point of the feed pipe coaxiality detection device 74.

[0044] The first linear drive device 712, the second linear drive device, the third linear drive device, the fourth linear drive device 742, the fifth linear drive device 745 and the sixth linear drive device 747 can be one of a telescopic cylinder, a telescopic electric cylinder, a gas cylinder or a hydraulic cylinder.

[0045] The first distance sensor 714 , the second distance sensor 715 , the third distance sensor, the fourth distance sensor and the fifth distance sensor 749 may be digital dial indicators or laser sensors.

[0046] The present invention also designs a detection method suitable for the mixing drum coaxiality detection device designed by the present invention, comprising the following steps:

[0047] In the initial state, the first linear drive device 712 , the second linear drive device, the third linear drive device, the fourth linear drive device 742 , the fifth linear drive device 745 and the sixth linear drive device 747 are all in a contracted state.

[0048] Step 1: According to the model of the mixing drum 1, obtain the total length and outer diameter parameters of the mixing drum 1, adjust the height of the head and tail frame positioner body 2 and the relative distance between the translation device 5 and the head and tail frame positioner body 2, place the mixing drum 1 on the supporting device 6, and make the clamping device 3 clamp the first accompanying tooling 17.

[0049] Step 2: The output ends of the first linear drive device 712, the second linear drive device, the third linear drive device, the fourth linear drive device 742, the fifth linear drive device 745 and the sixth linear drive device 747 extend to respectively send the first distance sensor 714, the second distance sensor 715, the third distance sensor, the fourth distance sensor and the fifth distance sensor 749 to corresponding positions. The corresponding position is preferably 10 cm away from the detection surface.

[0050] Step 3: The head and tail frame positioner body 2 drives the rotating device 4 to rotate at a speed n, the unit is rad / s; the sampling interval of the first distance sensor 714, the second distance sensor 715, the third distance sensor, the fourth distance sensor and the fifth distance sensor 749 is T, the unit is s.

[0051] Preferably, the relationship between the sampling interval T of all distance sensors and the rotation speed n of the rotating device 4 is: T*n=1 / 36, that is, every time the rotating device 4 rotates 10°, all distance sensors collect data once.

[0052] Step 4: Process the data collected by the first distance sensor 714 in step 3 to obtain the offset of the first accompanying tooling 17 , that is, the offset of the mixing drum 1 , so as to obtain the actual axis of the mixing drum 1 .

[0053] Step 5: Plot the data detected by the second distance sensor 715, the third distance sensor, the fourth distance sensor and the fifth sensor 749 in step 3 on the same plane, respectively, and obtain the simulated circles of the head flange 11, the second accompanying tooling 18, the raceway 15 and the feed pipe 16, so as to obtain the center of the simulated circle. Combined with the actual axis of the mixing drum 1 obtained in step 4, the distance from the center of the simulated circle to the actual axis can be obtained. If the distance is greater than the set threshold, the coaxiality of the position is unqualified, otherwise the coaxiality of the position is qualified. Preferably, the set threshold is 3mm. Fig. 9 shown.

[0054] If there are several sensors of various types, the distance from the center of the corresponding simulated circle to the actual axis is averaged.

[0055] In addition to the above embodiments, the present invention may also have other implementation modes. Any technical solutions formed by equivalent replacement or equivalent transformation shall fall within the protection scope required by the present invention.

Claims

1. A mixing drum coaxiality detection device, characterized in that: The invention comprises a head-tail frame type positioner body (2) and a translation device (5) arranged parallel to the axis direction of the mixing drum (1), and also comprises a support device (6) mounted on the translation device (5) and fixedly connected to the mixing drum (1), wherein the head-tail frame type positioner body (2) is arranged at both ends of the axis direction of the mixing drum (1), a clamping device (3) is arranged at one end of a first accompanying tool (17) to clamp the first accompanying tool (17), the clamping device (3) is also fixedly connected to a rotating device (4), and the rotating device (4) is fixedly connected to the rotating shaft of the head-tail frame type positioner body (2); the detection device assembly (7) is arranged at the head flange (11), the second accompanying tool (18), the raceway (15) and the feed pipe (16) The detection device assembly (7) comprises a head flange coaxiality detection device (71), an accompanying tooling coaxiality detection device (72), a raceway coaxiality detection device (73) and a feed pipe coaxiality detection device (74); the head flange coaxiality detection device (71) is arranged at the head flange (11) and is perpendicular to the axis of the mixing drum (1); the accompanying tooling coaxiality detection device (72) is arranged at the second accompanying tooling (18) and is perpendicular to the axis of the mixing drum (1); the raceway coaxiality detection device (73) is arranged at the raceway (15) and is perpendicular to the axis of the mixing drum (1); and the feed pipe coaxiality detection device (74) is arranged at the feed pipe (16) and is parallel to the axis of the mixing drum (1).

2. A mixing drum coaxiality detection device according to claim 1, characterized in that: The head flange coaxiality detection device (71) comprises a first support frame (711) which is fixedly connected at one end to the head and tail frame positioner body (2) and at the other end to the fixed end of the first linear drive device (712) and is vertically arranged, a first linear drive device (712) which is arranged perpendicular to the axis of the mixing drum (1) and whose output end faces the mixing drum (1), and a first linear guide mechanism (713) which is arranged parallel to the first linear drive device (712) and fixed on the first support frame (711), wherein the first linear guide mechanism (713) comprises a guide rail and a slider The invention further comprises a first installation plate (716) fixedly connected to the slider of the first linear guide mechanism (713), a first distance sensor (714) fixedly connected to the first installation plate (716) and arranged along the axis direction of the mixing drum (1), a first support plate (717) fixedly connected to the first installation plate (716), and a second distance sensor (715) fixedly connected to the first support plate (717) and arranged perpendicular to the axis direction of the mixing drum (1).

3. A mixing drum coaxiality detection device according to claim 2, characterized in that: The accompanying tooling coaxiality detection device (72) comprises a second support frame having one end fixedly connected to the translation device (4) and the other end fixedly connected to the second linear drive device and the second linear guide mechanism, a second linear drive device having a fixed end fixedly connected to the second support frame and an output end connected to the slider of the second linear guide mechanism, and a second linear guide mechanism having the guide rail fixedly connected to the second support frame, wherein the second linear drive device and the second linear guide mechanism are arranged perpendicular to the axis of the mixing drum (1), and further comprising a second mounting plate fixedly connected to the slider of the second linear guide mechanism, and a third distance sensor fixedly mounted on the second mounting plate and arranged perpendicular to the axis of the mixing drum (1).

4. A mixing drum coaxiality detection device according to claim 3, characterized in that: The raceway coaxiality detection device (73) comprises a third support frame, a third linear drive device, a third linear guide mechanism, a fourth distance sensor and a third mounting plate, the third support frame connects the third linear drive device and the third linear guide mechanism, the third mounting plate is fixedly connected to a slider of the third linear guide mechanism, the fourth distance sensor is fixedly mounted on the third mounting plate, and the third linear drive device, the third linear guide mechanism and the fourth distance sensor are all arranged perpendicular to the axis of the mixing drum (1).

5. A mixing drum coaxiality detection device according to claim 4, characterized in that: The feeding pipe coaxiality detection device (74) comprises a fourth support frame (741) having one end fixedly connected to the translation device (5) and the other end fixedly connected to the fixed end of the fourth linear drive device (742) and the guide rail of the fourth linear guide mechanism (743), the fourth linear drive device (742) and the fourth linear guide mechanism (743) arranged in parallel and perpendicular to the axis of the mixing drum (1), and a second support plate (744) fixedly connected to the output end of the fourth linear drive device (742) and the slider of the fourth linear guide mechanism (743), and also comprises a fifth linear drive device (745), a fifth linear guide mechanism (746), a sixth linear drive device (747), a sixth linear guide mechanism (748), a fourth mounting plate and a fifth distance sensor (749) which are fixedly connected in sequence from the second support plate (744) in a direction away from the translation device (5), the fifth linear drive device (745), the fifth linear guide mechanism (746), the sixth linear drive device (747), the sixth linear guide mechanism (748), the fourth mounting plate and the fifth distance sensor (749), the fifth linear drive device (745), the fifth linear guide mechanism (748) and the fourth linear guide mechanism (749) The mechanism (746), the sixth linear drive device (747) and the sixth linear guide mechanism (748) are arranged parallel to the axis of the mixing drum (1); the fifth distance sensor (749) is arranged perpendicular to the axis of the mixing drum (1); the fixed end of the fifth linear drive device (745) is fixedly connected to the second support plate (744) and the guide rail of the fifth linear guide mechanism (746) respectively; the slider of the fifth linear guide mechanism (746) is fixedly connected to the output end of the fifth linear drive device (745) and the fixed end of the sixth linear drive device (747); the guide rail of the sixth linear guide mechanism (748) is fixedly connected to the fixed end of the sixth linear drive device (747); the slider of the sixth linear guide mechanism (748) is fixedly connected to the fourth mounting plate and the output end of the sixth linear drive device (747); the output ends of the fifth linear drive device (745) and the sixth linear drive device (747) face the mixing drum (1).

6. A mixing drum coaxiality detection device according to claim 5, characterized in that: The number of the head flange coaxiality detection device (71), the accompanying tooling coaxiality detection device (72) and the raceway coaxiality detection tooling (73) are all two, and they are symmetrically arranged relative to the axis of the mixing drum (1).

7. A mixing drum coaxiality detection device according to claim 5, characterized in that: The first linear drive device (712), the second linear drive device, the third linear drive device, the fourth linear drive device (742), the fifth linear drive device (745) and the sixth linear drive device (747) are one of telescopic cylinders, telescopic electric cylinders, air cylinders or hydraulic cylinders.

8. The mixing drum coaxiality detection device according to claim 5, characterized in that: The first distance sensor (714), the second distance sensor (715), the third distance sensor, the fourth distance sensor and the fifth distance sensor (749) are digital dial indicators or laser sensors.

9. A detection method applicable to a mixing drum coaxiality detection device according to any one of claims 5 to 8, characterized in that: The steps include: Step 1: According to the model of the mixing drum (1), the total length and outer diameter parameters of the mixing drum (1) are obtained, the height of the head and tail frame positioner body (2) and the relative distance between the translation device (5) and the head and tail frame positioner body (2) are adjusted, the mixing drum (1) is placed on the supporting device (6), and the clamping device (3) clamps the first accompanying tool (17); Step 2: The output ends of the first linear drive device (712), the second linear drive device, the third linear drive device, the fourth linear drive device (742), the fifth linear drive device (745) and the sixth linear drive device (747) are extended to respectively send the first distance sensor (714), the second distance sensor (715), the third distance sensor, the fourth distance sensor and the fifth distance sensor (749) to corresponding positions; Step 3: The head-to-tail positioner body (2) drives the rotating device (4) to rotate at a speed n, the unit is rad / s; the sampling interval of the first distance sensor (714), the second distance sensor (715), the third distance sensor, the fourth distance sensor and the fifth distance sensor (749) is T, the unit is s; Step 4: Processing the data collected by the first distance sensor (714) in step 3 to obtain the offset of the first accompanying tool (17), that is, the offset of the mixing drum (1), thereby obtaining the actual axis of the mixing drum (1); Step 5: The data detected by the second distance sensor (715), the third distance sensor, the fourth distance sensor and the fifth sensor (749) in step 3 are plotted on the same plane, respectively, to obtain simulated circles of the head flange (11), the second accompanying tooling (18), the raceway (15) and the feed pipe (16), thereby obtaining the center of the simulated circle. Combined with the actual axis of the mixing drum (1) obtained in step 4, the distance from the center of the simulated circle to the actual axis can be obtained. If the distance is greater than the set threshold, the coaxiality of the position is unqualified, otherwise the coaxiality of the position is qualified.

10. The detection method of the mixing drum coaxiality detection device according to claim 9, characterized in that: The relationship between the sampling interval T and the rotation speed n of the rotating device (4) in step 3 is: T*n=1 / 36; the threshold value set in step 5 is 3 mm; and the corresponding position in step 2 is 10 cm away from the detection surface.

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