Device for measuring diameter and height of rotor

Abstract

The utility model discloses a device for measuring the diameter and height of a rotor, and the device comprises a workbench which is horizontally disposed, a placement mechanism which is rotatably disposed on the workbench, and a measurement mechanism which is disposed on the workbench in a sliding manner. The placing mechanism comprises a mounting seat fixed on the workbench, a placing seat rotating on the mounting seat and a rotating motor in driving connection with the placing seat, and the measuring mechanism comprises a support frame sliding on the workbench, a height measuring mechanism sliding on the support frame and a diameter measuring mechanism in floating connection with the support frame. The device is compact in structure, can measure the diameter and height of the motor rotor at the same time, and improves the working efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of automated production, in particular to a measuring device for rotor diameter and height. Background Art

[0002] The motor is mainly composed of a stator, a rotor and other accessories. The diameter and height of the motor rotor directly affect the assembly of the motor, so its diameter and height need to be measured. With the advancement of modern science and technology and the continuous development of technology, the workmanship of the motor rotor is becoming more and more precise, and the measurement of size is also required to be more and more accurate. The existing measuring devices, when measuring, place the motor rotor on the measuring ruler and measure it directly. Due to the influence of unstable placement, the measurement is inaccurate; in addition, the diameter and height of the motor rotor need to be placed in different states and measured separately, resulting in low efficiency. Therefore, improvements need to be proposed. Utility Model Content

[0003] The utility model aims to provide a device for measuring the diameter and height of a rotor, so as to overcome the deficiencies in the prior art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The utility model embodiment discloses a device for measuring the diameter and height of a rotor, comprising a horizontally arranged workbench, a placing mechanism rotatably arranged on the workbench, and a measuring mechanism slidably arranged on the workbench, the placing mechanism comprising a mounting seat fixed to the workbench, a placing seat rotatably arranged on the mounting seat, and a rotating motor drivingly connected to the placing seat, the measuring mechanism comprising a supporting frame sliding on the workbench, a height measuring mechanism sliding on the supporting frame, and a diameter measuring mechanism floatingly connected to the supporting frame.

[0006] Furthermore, in the above-mentioned measuring device for rotor diameter and height, a placement groove corresponding to the motor rotor is provided at the top of the placement seat, and the bottom end of the placement seat is connected to the rotating motor through a rotating shaft drive, and the rotating shaft motor is fixed to the side of the mounting seat through a motor seat, and is connected to the rotating shaft through a synchronous belt drive, and a sensing block is provided on the side of the placement seat, and a sensor corresponding to the sensing block is provided on the corresponding side of the mounting seat.

[0007] Furthermore, in the above-mentioned measuring device for rotor diameter and height, the rotating shaft is rotatably disposed on the mounting seat via a bearing seat, and the bearing seat is fixed to the top surface of the mounting seat.

[0008] Furthermore, in the above-mentioned device for measuring the diameter and height of the rotor, a plurality of magnets are arranged in the placement slot.

[0009] Furthermore, in the above-mentioned measuring device for rotor diameter and height, the support frame is slidably arranged on the workbench through a first guide rail and is driven and connected to the moving cylinder. The support frame includes a vertically arranged connecting plate and a bottom plate and a top plate respectively arranged at both ends of the connecting plate, wherein the bottom plate is arranged on the side of the connecting plate away from the placement mechanism, and the top plate is arranged on the side of the connecting plate close to the placement mechanism.

[0010] Furthermore, in the above-mentioned measuring device for rotor diameter and height, the height measuring mechanism includes a lower pressure head slidably connected to the connecting plate and a first displacement sensor arranged below the lower pressure head, the lower pressure head is slidably arranged on the side of the connecting plate close to the placing mechanism through a second guide rail, and the top plate is provided with a lifting cylinder drivingly connected to the lower pressure head.

[0011] Furthermore, in the above-mentioned measuring device for rotor diameter and height, the lower pressure head includes a lower pressure seat connected to the second guide rail, the lower pressure seat has a connecting portion protruding from the side facing away from the second guide rail, the top of the connecting portion is connected to the piston rod of the lifting cylinder through a floating joint, the bottom surface of the connecting portion is recessed with an installation groove, and is provided with a pressure cover and a pressure ring, and avoidance grooves corresponding to the diameter measuring mechanism are respectively provided on both sides of the outer wall of the pressure ring.

[0012] Furthermore, in the above-mentioned measuring device for rotor diameter and height, the diameter measuring mechanism includes a fixed frame connected to the supporting frame and a floating frame slidably arranged in the fixed frame, a fixed arm and a movable arm are respectively arranged on both sides of the open end of the floating frame, and a second displacement sensor is arranged between the movable arm and the corresponding open end of the floating frame.

[0013] Furthermore, in the above-mentioned measuring device for rotor diameter and height, the fixed frame and the floating frame are both slot-type structures with their openings facing the placement mechanism, the fixed frame is connected to the support frame via a mounting frame, and the end surface of the floating frame facing away from the placement mechanism is slidably connected to the corresponding inner wall of the fixed frame via a third guide rail, and springs are respectively arranged between the two side walls of the floating frame and the corresponding inner walls of the fixed frame.

[0014] Furthermore, in the above-mentioned measuring device for rotor diameter and height, the floating frame is provided with a measuring head of a movable cylinder drivingly connected to the movable arm and a second displacement sensor at an open end of the movable arm.

[0015] Compared with the prior art, the advantages of the utility model are: the measuring device for rotor diameter and height has a compact structure, and can measure the diameter and height of the motor rotor at the same time, thereby improving work efficiency; the motor rotor is placed in a rotating placement seat, and all-round measurement is performed, thereby improving measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 Shown is a schematic structural diagram of a device for measuring rotor diameter and height in a specific embodiment of the utility model.

[0018] Figure 2 Shown is a schematic diagram of the installation of a support frame in a specific embodiment of the utility model.

[0019] Figure 3 Shown is a structural schematic diagram of a placement mechanism in a specific embodiment of the utility model.

[0020] Figure 4 Shown is an exploded schematic diagram of a placement mechanism in a specific embodiment of the utility model.

[0021] Figure 5 Shown is a schematic structural diagram of a measuring mechanism in a specific embodiment of the utility model.

[0022] Figure 6 Shown is a three-dimensional diagram of a measuring mechanism in a specific embodiment of the utility model.

[0023] Figure 7 Shown is an exploded schematic diagram of a lower pressure head in a specific embodiment of the utility model.

[0024] Figure 8 Shown is a schematic structural diagram of a lower pressure seat in a specific embodiment of the utility model.

[0025] Fig. 9 Shown is a structural schematic diagram of a diameter measuring mechanism in a specific embodiment of the utility model. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to describe the technical solutions in the embodiments of the utility model in detail. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Ginseng Figures 1 to 9 As shown, a device for measuring the diameter and height of a rotor includes a horizontally arranged workbench 1, a placing mechanism 2 rotatably arranged on the workbench 1, and a measuring mechanism slidably arranged on the workbench 1, the placing mechanism 2 includes a mounting seat 21 fixed to the workbench 1, a placing seat 22 rotatably arranged on the mounting seat 21, and a rotating motor 23 drivingly connected to the placing seat 22, and the measuring mechanism includes a supporting frame 3 sliding on the workbench 1, a height measuring mechanism 4 sliding on the supporting frame 3, and a diameter measuring mechanism 5 floatingly connected to the supporting frame 3.

[0030] In this technical solution, the workbench is horizontally arranged by conventional profiles and table foot bolts, and a number of conventional mounting holes are processed in the workbench. The support frame height measuring mechanism and the diameter measuring mechanism are both arranged on the support frame, with a compact structure. The height and diameter of the motor rotor are measured respectively, thereby improving the measurement efficiency. The motor rotor is placed in a rotating placement seat for all-round measurement, thereby improving the measurement accuracy.

[0031] For example, see Figures 1 to 4 As shown, a placement groove corresponding to the motor rotor is provided at the top of the placement seat 22, and the bottom end of the placement seat 22 is driven and connected to the rotating motor 23 through a rotating shaft 24. The rotating shaft 24 motor is fixed to the side of the mounting seat 21 through a motor seat 25, and is driven and connected to the rotating shaft 24 through a synchronous belt. A sensing block 26 is provided on the side of the placement seat 22, and a sensor 27 corresponding to the sensing block 26 is provided on the corresponding side of the mounting seat 21.

[0032] In this technical solution, a step groove corresponding to the motor rotor is provided at the center of the top surface of the placement seat, which serves as a placement groove for vertically placing the motor rotor to facilitate loading and unloading of the motor rotor. The mounting seat is a gantry structure formed by splicing or processing conventional plates. The rotating motor uses a conventional servo motor and is fixed to the side of the mounting seat through a conventional motor seat, etc. Its output shaft is driven and connected to the rotating shaft through a transmission device such as a synchronous wheel and a synchronous belt. The side of the mounting seat is processed with a through groove for accommodating the passage of the synchronous belt. The induction block is an L-shaped structure and is fixed to the outer wall of the placement seat by bolts, etc. The sensor is fixed to the side of the mounting seat relative to the rotating motor through a conventional sensor bracket. The induction block cooperates with the sensor and the rotating motor to realize the positioning rotation of the placement seat, that is, the positioning rotation of the motor rotor. The induction block and the sensor can also be used as the origin of the rotating motor. After each rotation of the placement seat, the rotating motor returns to the origin to avoid the accumulation of errors in the counting of the rotating motor.

[0033] For example, see Figures 1 to 4 As shown, the rotating shaft 24 is rotatably disposed on the mounting seat 21 through a bearing seat 28 , and the bearing seat 28 is fixed to the top surface of the mounting seat 21 .

[0034] In this technical solution, the bearing seat is of a conventional structure and is fixed to the top of the mounting seat by bolts, etc. The rotating shaft is of a stepped shaft structure and is axially fixed to the bearing seat by means of its own stepped structure and conventional retaining springs, etc. The placement seat is fixed to the top of the rotating shaft by bolts and rotates freely together with the rotating shaft through the bearing seat.

[0035] For example, see Figure 4 As shown, a plurality of magnets 29 are arranged in the placement groove.

[0036] In this technical solution, the magnet is selected from conventional cylindrical and other shaped magnets and embedded in the placement groove to adsorb the motor rotor to ensure that it rotates with the placement seat. The magnet can also be replaced by a conventional positioning pin, etc. The bottom end of the positioning pin is embedded in the corresponding bottom wall of the placement groove and cooperates with the circular hole of the motor rotor itself, etc., to also drive the motor rotor to rotate with the placement seat.

[0037] For example, see Figure 1 , Figure 2 as well as Figure 5 and Figure 6 As shown, the support frame 3 is slidably set on the workbench 1 through the first guide rail 6 and is driven and connected to the moving cylinder 7. The support frame 3 includes a vertically set connecting plate 31 and a bottom plate 32 and a top plate 33 respectively arranged at both ends of the connecting plate 31, wherein the bottom plate 32 is arranged on the side of the connecting plate 31 away from the placement mechanism 2, and the top plate 33 is arranged on the side of the connecting plate 31 close to the placement mechanism 2.

[0038] In this technical solution, the height measuring mechanism and the diameter measuring mechanism are both arranged on one side of the connecting plate close to the placement mechanism, so as to cooperate with the motor rotor in the placement structure to complete the measurement. Two parallel first guide rails are respectively fixed to the bottom and top surfaces of the workbench by bolts, etc. The bottom plate of the support frame is fixed to the sliders of the two first guide rails through the large bottom plate. The slider of the moving cylinder is connected to the large bottom plate, driving the support frame to reciprocate along the direction of the first guide rails, moving the height measuring mechanism and the diameter measuring mechanism to the position of the placement mechanism to complete the measurement, or driving the height measuring mechanism and the diameter measuring mechanism away from the position of the placement mechanism to facilitate the loading and unloading of the motor rotor. The air pipe of the moving cylinder is placed through the tank chain, and conventional buffers are respectively provided at both ends of the first guide rail to improve the stability of the start and stop of the support frame.

[0039] For example, see Figures 5 to 8 As shown, the height measuring mechanism 4 includes a lower pressure head slidably connected to the connecting plate 31 and a first displacement sensor 41 arranged below the lower pressure head. The lower pressure head is slidably arranged on the side of the connecting plate 31 close to the placing mechanism 2 through a second guide rail 42, and the top plate 33 is provided with a lifting cylinder 43 drivingly connected to the lower pressure head.

[0040] In this technical solution, after the height measuring mechanism moves to the top of the placement seat, the lifting cylinder drives the lower pressure head to descend vertically along the direction of the second guide rail until the lower pressure head is against the top of the motor rotor. During this process, the lower pressure head pushes the measuring head of the first displacement sensor. The displacement measured by the first displacement sensor is compared with the set standard value. If the difference is within the allowable height error range, the height of the motor rotor is qualified, otherwise it is unqualified. Before use, the standard value of the lower pressure head pushing the measuring head of the first displacement sensor is set by calculation and other means. The actual displacement value of the measuring head of the first displacement sensor is compared with the standard value. When the actual displacement value is less than the set standard value, the height of the motor rotor is greater than the design value. When the actual displacement value is greater than the set standard value, the height of the motor rotor is less than the design value. When the actual displacement value of the measuring head of the first displacement sensor exceeds the allowable error range, an alarm device such as an external buzzer is used to remind the rejection of unqualified motor rotors. The working principle and program setting of the above-mentioned first displacement sensor belong to the prior art. The height measurement of the motor rotor can be completed by measuring the displacement of the lower pressure head.

[0041] For example, see Figures 5 to 8 As shown, the lower pressure head includes a lower pressure seat 44 connected to the second guide rail 42, and a connecting portion 441 protrudes from the side of the lower pressure seat 44 away from the second guide rail 42. The top of the connecting portion 441 is connected to the piston rod of the lifting cylinder 43 through a floating joint 45. The bottom surface of the connecting portion 441 is recessed with a mounting groove, and is provided with a pressure cover 46 and a pressure ring 47. The outer wall of the pressure ring 47 is provided with avoidance grooves corresponding to the diameter measuring mechanism 5 on both sides.

[0042] The U-shaped opening groove is an inverted T-shaped structure, and the connecting head is slidably inserted into the U-shaped opening groove, and the U-shaped opening groove limits the axial position of the connecting head, thereby reducing the radial force on the piston rod of the lifting cylinder and extending the service life of the lifting cylinder; an installation groove is processed on the bottom surface of the connecting part, and the pressure ring is installed in the installation groove through a pressure cover, wherein the pressure ring is an annular structure, and the center through hole avoids the part of the motor rotor protruding from the corresponding measuring surface, and the top surface of the inner wall is concave with a step groove, and the pressure cover is installed through a pressure cover. The screw is fixed in the step groove, and then, the pressure ring and the pressure cover are installed as a whole in the mounting groove of the connecting part. A threaded connection hole for installing the pressure cover is processed in the mounting groove, and the pressure cover is connected to the threaded connection hole by a mounting bolt. To avoid interference with the mounting screws, an arc-shaped avoidance groove is recessed on the inner wall of the pressure ring, and an adjustment hole is processed at the bottom end of the threaded mounting hole (one end close to the mounting groove). The parallelism of the end face of the pressure cover and the horizontal plane is fine-tuned by installing the screws, that is, the parallelism of the bottom end of the pressure ring and the corresponding measuring surface of the motor rotor is fine-tuned to improve the measurement accuracy. To facilitate installation, an annular pre-installed groove is recessed on the outer wall of the pressure ring, and top screws corresponding to the pre-installed groove are arranged in the side wall of the mounting groove. After the pressure cover and the pressure ring are placed in the mounting groove, the end of the top screw extends into the pre-installed groove without lifting, which is convenient for the mounting screws and the threaded connection hole to be aligned and connected. Avoidance grooves corresponding to the diameter measuring mechanism are respectively arranged on both sides of the outer wall of the pressure ring to avoid interference with the diameter measuring mechanism during the descent of the lower pressure head.

[0043] For example, see Figure 1 , Figure 2 and Fig. 9 As shown, the diameter measuring mechanism 5 includes a fixed frame 51 connected to the support frame 3 and a floating frame 52 slidably arranged in the fixed frame 51, and a fixed arm 53 and a movable arm 54 are respectively arranged on both sides of the open end of the floating frame 52, and a second displacement sensor 55 is arranged between the movable arm 54 and the corresponding open ends of the floating frame 52.

[0044] In this technical solution, a beam sensor is provided at the bottom of both sides of the open end of the floating frame to sense the motor rotor in the placement seat, so as to confirm that the measuring mechanism moves to the measuring position, the movable arm moves relative to the fixed arm, and the part of the motor rotor whose diameter needs to be measured is clamped between the fixed arm and the movable arm, and the movement value of the movable arm is measured by a second displacement sensor. Guide surfaces are provided on the inner sides of the ends of the movable arm and the fixed arm to ensure that the motor rotor can smoothly enter between the movable arm and the fixed arm.

[0045] For example, see Figure 4 , Figure 5 and Fig. 9 As shown, both the fixed frame 51 and the floating frame 52 are groove-shaped structures with their openings facing the placement mechanism 2. The fixed frame 51 is connected to the support frame 3 through the mounting frame 56. The end surface of the floating frame 52 facing away from the placement mechanism 2 is slidably connected to the corresponding inner wall of the fixed frame 51 through the third guide rail 57. Springs are respectively arranged between the two side walls of the floating frame 52 and the corresponding inner walls of the fixed frame 51.

[0046] In this technical solution, the opening width of the floating frame is greater than the width of the connecting plate. In order to ensure the overall strength of the support frame, a reinforcing plate is arranged between the top surface of the corresponding side surface and the bottom surface of the connecting plate. The floating frame and the mounting frame are both provided with a yield groove corresponding to the reinforcing plate. The mounting frame is fixed to the connecting plate by bolts, and the fixed frame is fixed to the mounting frame by bolts. The floating frame is slidably arranged in the fixed frame through the third guide rail. Springs are respectively arranged between the two side walls of the floating frame and the inner wall of the corresponding fixed frame, and the distance from the inner side surface of the fixed arm to the center of the motor rotor is less than the corresponding diameter of the motor rotor. When the measuring mechanism moves toward the placing mechanism as a whole, the inner side surface of the fixed arm slides against the surface of the motor rotor, and the floating frame floats toward the side where the fixed arm is located. Through the setting of the spring, the inner side surface of the fixed arm and the surface of the motor rotor are in elastic contact to avoid damage to the motor rotor. At the same time, the spring applies a force to the floating frame so that the fixed arm fits against the surface of the motor rotor to ensure measurement accuracy.

[0047] For example, see Figure 4 , Figure 5 and Fig. 9 As shown, a movable cylinder 58 drivingly connected to the movable arm 54 and a measuring head of a second displacement sensor 55 are provided at the open end of the floating frame 52 close to the movable arm 54 .

[0048] In the technical solution, the movable cylinder uses a conventional needle cylinder, and its piston rod is connected to the movable arm through a conventional connection structure. To ensure the moving direction of the movable arm, the movable arm and the floating frame are connected by a sliding connection such as a guide rod. The second displacement sensor uses a conventional displacement sensor, and its measuring head can be automatically extended and retracted. After the movable cylinder drives the movable arm to extend, the measuring head of the second displacement sensor extends to measure the displacement of the movable arm relative to the starting position of the measuring head. By comparing it with the set standard value, the diameter of the motor rotor can be obtained. Before measurement, according to the theoretical standard diameter of the motor rotor, the starting position of the movable arm relative to the measuring head is set by calculation and other methods. The standard displacement of the position. During the actual test, when the diameter of the motor rotor is smaller than the theoretical standard diameter, the distance moved by the movable arm is greater than the standard displacement. When the diameter of the motor rotor is larger than the theoretical standard diameter, the distance moved by the movable arm is less than the standard displacement. The difference between the actual moving distance of the movable arm and the standard displacement is the error value of the diameter size. When the error value exceeds the allowable range, manual identification or cooperation with external alarm devices such as buzzers are used to remind the removal of unqualified motor rotors. The working principle and program setting of the above-mentioned second displacement sensor belong to the prior art. The diameter measurement of the motor rotor can be completed by measuring the displacement of the movable arm.

[0049] In summary, the measuring device for rotor diameter and height has a compact structure, and can measure the diameter and height of the motor rotor at the same time, thereby improving work efficiency. The motor rotor is placed in a rotating placement seat, and all-round measurement is performed, thereby improving measurement accuracy.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0051] The above is only a specific implementation of the present utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model. These improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A device for measuring rotor diameter and height, characterized in that: It includes a horizontally arranged workbench, a placing mechanism rotatably arranged on the workbench, and a measuring mechanism slidably arranged on the workbench, the placing mechanism includes a mounting seat fixed to the workbench, a placing seat rotatably arranged on the mounting seat, and a rotating motor drivingly connected to the placing seat, and the measuring mechanism includes a supporting frame sliding on the workbench, a height measuring mechanism sliding on the supporting frame, and a diameter measuring mechanism floatingly connected to the supporting frame.

2. The device for measuring rotor diameter and height according to claim 1, characterized in that: A placement groove corresponding to the motor rotor is provided at the top of the placement seat, and the bottom end of the placement seat is connected to the rotating motor through a rotating shaft drive. The rotating shaft motor is fixed to the side of the mounting seat through a motor seat and is connected to the rotating shaft through a synchronous belt drive. An induction block is provided on the side of the placement seat, and an inductor corresponding to the induction block is provided on the corresponding side of the mounting seat.

3. The device for measuring rotor diameter and height according to claim 2, characterized in that: The rotating shaft is rotatably arranged on the mounting seat through a bearing seat, and the bearing seat is fixed to the top surface of the mounting seat.

4. The device for measuring rotor diameter and height according to claim 2, characterized in that: A plurality of magnets are arranged in the placement groove.

5. The device for measuring rotor diameter and height according to claim 1, characterized in that: The support frame is slidably arranged on the workbench through a first guide rail and is driven and connected to a movable cylinder. The support frame includes a vertically arranged connecting plate and a bottom plate and a top plate respectively arranged at both ends of the connecting plate, wherein the bottom plate is arranged on a side of the connecting plate away from the placement mechanism, and the top plate is arranged on a side of the connecting plate close to the placement mechanism.

6. The device for measuring rotor diameter and height according to claim 5, characterized in that: The height measuring mechanism includes a lower pressure head slidably connected to the connecting plate and a first displacement sensor arranged below the lower pressure head. The lower pressure head is slidably arranged on the side of the connecting plate close to the placing mechanism through a second guide rail, and the top plate is provided with a lifting cylinder drivingly connected to the lower pressure head.

7. The device for measuring rotor diameter and height according to claim 6, characterized in that: The lower pressure head includes a lower pressure seat connected to the second guide rail, a connecting portion protruding from the side of the lower pressure seat away from the second guide rail, the top of the connecting portion is connected to the piston rod of the lifting cylinder through a floating joint, a mounting groove is recessed on the bottom surface of the connecting portion, and a pressure cover and a pressure ring are provided, and avoidance grooves corresponding to the diameter measuring mechanism are respectively provided on both sides of the outer wall of the pressure ring.

8. The device for measuring rotor diameter and height according to claim 5, characterized in that: The diameter measuring mechanism includes a fixed frame connected to the support frame and a floating frame slidably arranged in the fixed frame, a fixed arm and a movable arm are respectively arranged on both sides of the open end of the floating frame, and a second displacement sensor is arranged between the movable arm and the corresponding open end of the floating frame.

9. The device for measuring rotor diameter and height according to claim 8, characterized in that: The fixed frame and the floating frame are both groove-shaped structures with their openings facing the placement mechanism. The fixed frame is connected to the support frame via a mounting frame. The end surface of the floating frame facing away from the placement mechanism is slidably connected to the corresponding inner wall of the fixed frame via a third guide rail. Springs are respectively arranged between the two side walls of the floating frame and the corresponding inner walls of the fixed frame.

10. The device for measuring rotor diameter and height according to claim 8, characterized in that: The floating frame is provided with a movable cylinder drivingly connected to the movable arm and a measuring head of a second displacement sensor near the open end of the movable arm.

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