Axial movement detection mechanism

Abstract

The invention discloses an axial movement detection mechanism which reliably detects the axial movement of a motor and ensures that a product is not crushed. The device comprises: a vertical support; a top mounting plate; a lifting adjustment cylinder; the axial movement measuring assembly comprises a mounting plate, a lower profiling plate, a displacement sensor, a displacement detection head and a downward pressing air cylinder, the displacement sensor is arranged on the upper portion of the mounting plate through a guide frame, a base body of the displacement sensor is fixedly arranged on a top plate of the guide frame, the detection end of the displacement sensor is arranged downwards, and the displacement detection head is arranged on the lower portion of the mounting plate. The downward pressing air cylinder is fixedly installed on the vertical face of the front end of the installation plate, a transmission plate is installed at the telescopic end of the top of the downward pressing air cylinder, and the inner end of the transmission plate is connected with the top area of the displacement detection head through a first buffer spring. The bottom of the displacement detection head penetrates through the through hole of the lower profiling plate, then protrudes downwards and is arranged towards a motor shaft below.

Description

Technical Field

[0001] The invention relates to the technical field of motor axial movement, and in particular to an axial movement detection mechanism. Background Art

[0002] After the motor product is manufactured, it is necessary to conduct an axial movement detection. Only when the axial movement reaches the design range can it be judged as a qualified product, otherwise it is an unqualified product. The existing axial movement detection is to place the motor shaft in a horizontal position and then use an external displacement detection head to perform axial movement detection. In the actual process, the initial position is not pressurized, and subsequent measurements require a larger pressure, which makes the detected axial movement value relatively large, and it is impossible to objectively compare the movement amount. In addition, there is a risk of damaging the motor due to the high pressure. For this reason, it is urgently necessary to develop a detection mechanism for vertical axial movement detection. Summary of the invention

[0003] In view of the above problems, the present invention provides an axial movement detection mechanism, which can reliably detect the axial movement of the motor and ensure that the product will not be crushed.

[0004] A shaft movement detection mechanism, characterized in that it comprises:

[0005] Vertical stand;

[0006] Top mounting plate;

[0007] Lifting and adjusting cylinder;

[0008] And a shaft runout measurement assembly, which includes a mounting plate, a lower profiling plate, a displacement sensor, a displacement detection head, and a downward pressure cylinder. The upper part of the mounting plate is provided with the displacement sensor through a guide frame, the top plate of the guide frame is fixedly provided with a seat body of the displacement sensor, the detection end of the displacement sensor is arranged downward, the downward pressure cylinder is fixedly mounted on the front end elevation of the mounting plate, the top telescopic end of the downward pressure cylinder is provided with a transmission plate, the inner end of the transmission plate is connected to the top area of ​​the displacement detection head through a first buffer spring, the bottom of the displacement detection head passes through the through hole of the lower profiling plate and then convex downward and is arranged toward the motor shaft below;

[0009] A top mounting plate is provided on the top of the vertical bracket, and a front convex portion of the top mounting plate forms a mounting area, a cylinder seat of the lifting and adjusting cylinder is fixedly mounted on the front upper surface of the top mounting plate, a lower piston end of the lifting and adjusting cylinder passes through a avoidance hole and is fixedly connected to the central area of ​​the mounting plate, a mounting notch is provided at the front end position of the top mounting plate, and the guide frame is arranged corresponding to the mounting notch area.

[0010] It is further characterized by:

[0011] A first guide column structure arranged on both sides is also provided between the top mounting plate and the mounting plate, which ensures reliable lifting and lowering of the entire shaft runout measurement assembly when the lifting and lowering adjustment cylinder is lifted and lowered;

[0012] The lower profiling plate is used to reliably press the motor housing and make the bottom end of the displacement detection head press the top position of the output shaft. The two sides of the lower profiling plate are connected to the corresponding lower surface of the mounting plate through the second guide column and the second buffer spring. The corresponding position of the mounting plate is provided with a linear bearing. The second guide column is inserted into the linear bearing, which enables the lower profiling plate to have pressure adjustment when the lifting adjustment cylinder is pressed down, so as not to damage the motor.

[0013] The lower profiling plate is also fixedly provided with an upper convex guide sleeve at a position corresponding to the position detection head, and the position detection head includes an outer convex ring in the middle of the length direction, and the upper part of the upper convex guide sleeve is provided with a large-diameter guide hole, and the bottom is provided with a small-diameter through hole, and the outer convex ring is embedded in the large-diameter guide hole, and the bottom of the position detection head passes through the small-diameter guide hole and protrudes downward from the center position of the panel of the lower profiling plate, and the mounting plate is provided with an avoidance guide hole at a position corresponding to the upper convex guide sleeve, so as to ensure that the upper convex guide sleeve has a height direction adjustment function;

[0014] The transmission plate is provided with an avoidance notch at a position corresponding to the detection end of the displacement sensor, the top of the first buffer spring is mounted on the spring limiting groove, and the bottom of the first buffer spring is pressed on the upper surface of the outer convex ring, which ensures that when the downward movement of the pressing cylinder is too large, the first buffer spring can reliably relieve the pressure and will not damage the motor and corresponding parts;

[0015] The two upright posts of the guide frame are fixedly mounted on the top of the linear bearing, making the entire mechanism structure compact and reliable.

[0016] After adopting the structure of the present invention, the motor is pre-arranged directly below the lower profiling plate of the shaft movement measuring assembly, and the motor shaft is arranged upward. Then the lifting and adjusting cylinder drives the entire shaft movement measuring assembly downward, so that the lower profiling plate presses the motor to complete the motor positioning, and the bottom of the displacement detection head is attached to the top of the motor shaft. At this time, the downward pressing cylinder does not move, and the displacement reading one at this time is obtained through the detection end of the displacement sensor. Then the downward pressing cylinder drives the transmission plate downward, and then drives the displacement detection head downward, and presses the motor shaft axially downward until the motor shaft cannot go down, and obtains the displacement reading two obtained by the detection end of the displacement sensor at this time. The difference between the two displacement readings is the axial movement amount of the motor, wherein the first buffer spring reliably relieves the transition pressure to avoid crushing the product, and because the motor shaft is arranged vertically, the gravity of the motor shaft itself makes the pressure not need to be too large, so that the mechanism can reliably detect the axial movement amount of the motor and ensure that the product will not be crushed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the main view structure of the present invention;

[0019] Figure 3 for Figure 2 Schematic diagram of AA cross-sectional structure;

[0020] Figure 4 for Figure 3 A local enlarged schematic diagram of point B;

[0021] The names corresponding to the serial numbers in the figure are as follows:

[0022] Vertical bracket 10, top mounting plate 20, mounting notch 21, lifting adjustment cylinder 30, cylinder seat 31, lower piston end 32, shaft movement measurement assembly 40, mounting plate 50, avoidance guide hole 51, lower contour plate 60, displacement sensor 70, seat body 71, detection end 72, displacement detection head 80, outer convex ring 81, downward pressure cylinder 90, guide frame 100, top plate 101, column 102, transmission plate 110, avoidance notch 111, spring limit groove 112, first buffer spring 120, second guide column 130, second buffer spring 140, linear bearing 150, upper convex guide sleeve 160, large diameter guide hole 161, small diameter through hole 162, first guide column structure 170. DETAILED DESCRIPTION

[0023] A shaft runout detection mechanism, see Figure 1-Figure 4 : It includes a vertical bracket 10, a top mounting plate 20, a lifting adjustment cylinder 30, and an axle displacement measurement assembly 40;

[0024] The shaft displacement measuring assembly 40 includes a mounting plate 50, a lower profiling plate 60, a displacement sensor 70, a displacement detection head 80, and a downward pressure cylinder 90. The upper part of the mounting plate 50 is provided with the displacement sensor 70 through a guide frame 100. A seat body 71 of the displacement sensor 70 is fixedly provided on a top plate 101 of the guide frame 100. The detection end 72 of the displacement sensor 70 is arranged downwardly. The downward pressure cylinder 90 is fixedly mounted on the front end elevation of the mounting plate 50. A transmission plate 110 is installed at the top telescopic end of the downward pressure cylinder 90. The inner end of the transmission plate 110 is connected to the top area of ​​the displacement detection head 80 through a first buffer spring 120. The bottom of the displacement detection head 80 passes through the through hole of the lower profiling plate 60 and then convexly projects downwardly and is arranged toward the motor shaft downward.

[0025] A top mounting plate 20 is provided on the top of the vertical bracket 10, and the front portion of the top mounting plate 20 bulges forward to form a mounting area, and a cylinder seat 31 of a lifting and adjusting cylinder 30 is fixedly mounted on the front upper surface of the top mounting plate 20, and a lower piston end 32 of the lifting and adjusting cylinder 30 passes through the avoidance hole and is fixedly connected to the central area of ​​the mounting plate 50, and a mounting notch 21 is provided at the front end position of the top mounting plate 20, and a guide frame 100 is arranged corresponding to the mounting notch 21 area, so that the shaft runout measurement assembly 40 does not need to be arranged with a convex front portion, thereby saving the occupied area of ​​the entire mechanism.

[0026] In a specific implementation, a first guide column structure 170 arranged on both sides is further provided between the top mounting plate 20 and the mounting plate, which ensures reliable lifting and lowering of the entire shaft runout measurement assembly 40 when the lifting and lowering adjustment cylinder 30 is lifted and lowered.

[0027] In specific implementation, the lower profiling plate 60 is used to reliably press the motor housing and make the bottom end of the displacement detection head 80 press against the top position of the output shaft. The two sides of the lower profiling plate 60 are connected to the corresponding lower surface of the mounting plate 50 through the second guide column 130 and the second buffer spring 140. A linear bearing 150 is provided at the corresponding position of the mounting plate 50. The second guide column 130 is inserted into the linear bearing 150, so that when the lifting adjustment cylinder 30 is pressed down, the lower profiling plate 60 has pressure adjustment, so that the motor will not be damaged.

[0028] In specific implementation, the lower profiling plate 60 is further fixed with an upper convex guide sleeve 160 at a position corresponding to the position detection head 80. The position detection head 80 includes an outer convex ring 81 in the middle of the length direction. The upper part of the upper convex guide sleeve 160 is provided with a large-diameter guide hole 161 and the bottom is provided with a small-diameter through hole 162. The outer convex ring 81 is embedded in the large-diameter guide hole 161. The bottom of the position detection head 80 passes through the small-diameter guide hole 162 and protrudes downward from the center position of the panel of the lower profiling plate 60. The mounting plate 50 is provided with an avoidance guide hole 51 at a position corresponding to the upper convex guide sleeve 160 to ensure that the upper convex guide sleeve 160 has a height direction adjustment function.

[0029] The transmission plate 110 is provided with an avoidance notch 111 at a position corresponding to the detection end 72 of the displacement sensor 70. The top of the first buffer spring 120 is mounted on the spring limiting groove 112, and the bottom of the first buffer spring 120 is pressed on the upper surface of the outer convex ring 81, which ensures that when the downward movement of the pressing cylinder 90 is too large, the first buffer spring 120 can reliably relieve the pressure and will not damage the motor and corresponding parts.

[0030] The two upright posts 102 of the guide frame 100 are fixedly mounted on the top of the linear bearing 150 , making the entire structure compact and reliable.

[0031] The working process is as follows: the motor is pre-set directly below the lower profiling plate of the shaft movement measurement assembly, and the motor shaft is arranged upward. Then the lifting and adjusting cylinder drives the entire shaft movement measurement assembly downward, so that the lower profiling plate presses the motor to complete the motor positioning, and the bottom of the displacement detection head fits to the top of the motor shaft. At this time, the downward pressure cylinder does not move, and the displacement reading one at this time is obtained through the detection end of the displacement sensor. Then the downward pressure cylinder drives the transmission plate downward, and then drives the displacement detection head downward, and presses the motor shaft axially downward until the motor shaft can no longer move downward, and obtains the displacement reading two obtained by the detection end of the displacement sensor at this time. The difference between the two displacement readings is the axial movement of the motor, wherein the first buffer spring can reliably relieve the transition pressure to avoid crushing the product, and because the motor shaft is arranged vertically, the gravity of the motor shaft itself makes the pressure not need to be too large, so that the mechanism can reliably detect the axial movement of the motor and ensure that the product will not be crushed.

[0032] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A shaft movement detection mechanism, characterized in that: It includes: Vertical stand; Top mounting plate; Lifting and adjusting cylinder; And a shaft runout measurement assembly, which includes a mounting plate, a lower profiling plate, a displacement sensor, a displacement detection head, and a downward pressure cylinder. The upper part of the mounting plate is provided with the displacement sensor through a guide frame, the top plate of the guide frame is fixedly provided with a seat body of the displacement sensor, the detection end of the displacement sensor is arranged downward, the downward pressure cylinder is fixedly mounted on the front end elevation of the mounting plate, the top telescopic end of the downward pressure cylinder is provided with a transmission plate, the inner end of the transmission plate is connected to the top area of ​​the displacement detection head through a first buffer spring, the bottom of the displacement detection head passes through the through hole of the lower profiling plate and then convex downward and is arranged toward the motor shaft below; A top mounting plate is provided on the top of the vertical bracket, and a front convex portion of the top mounting plate forms a mounting area, a cylinder seat of the lifting and adjusting cylinder is fixedly mounted on the front upper surface of the top mounting plate, a lower piston end of the lifting and adjusting cylinder passes through a avoidance hole and is fixedly connected to the central area of ​​the mounting plate, a mounting notch is provided at the front end position of the top mounting plate, and the guide frame is arranged corresponding to the mounting notch area.

2. The shaft movement detection mechanism according to claim 1, characterized in that: A first guide column structure arranged on both sides is also provided between the top mounting plate and the mounting plate.

3. The shaft movement detection mechanism according to claim 1, characterized in that: The lower profiling plate is used to reliably press the motor housing and make the bottom end of the displacement detection head press the top position of the output shaft. The two sides of the lower profiling plate are connected to the corresponding lower surface of the mounting plate through the second guide column and the second buffer spring. The corresponding position of the mounting plate is provided with a linear bearing, and the second guide column is inserted into the linear bearing.

4. The shaft movement detection mechanism according to claim 3, characterized in that: The lower profiling plate is also fixed with an upper convex guide sleeve at a position corresponding to the position detection head. The position detection head includes an outer convex ring in the middle of the length direction. The upper part of the upper convex guide sleeve is provided with a large-diameter guide hole, and the bottom is provided with a small-diameter through hole. The outer convex ring is embedded in the large-diameter guide hole. The bottom of the position detection head passes through the small-diameter guide hole and protrudes downward from the center position of the panel of the lower profiling plate. The mounting plate is provided with an avoidance guide hole at a position corresponding to the upper convex guide sleeve.

5. The shaft movement detection mechanism according to claim 4, characterized in that: The transmission plate is provided with an avoidance notch at a position corresponding to the detection end of the displacement sensor, the top of the first buffer spring is mounted on the spring limiting groove, and the bottom of the first buffer spring is pressed on the upper surface of the outer convex ring.

6. The shaft movement detection mechanism according to claim 3, characterized in that: The two upright posts of the guide frame are fixedly mounted on the top position of the linear bearing.

Images