Motor shaft gap universal detection device

Abstract

The utility model discloses a motor shaft gap universal detection device comprising a pedestal, one side of the upper part of the pedestal is detachably connected with a dial indicator through a gauge stand, the upper part of the pedestal is provided with a horizontal fixed bench clamp located at one side of the gauge stand, and the horizontal fixed bench clamp is connected with a fixed clamp arm and is slidably connected with a movable clamp arm. A screw in threaded connection with the movable clamp arm is rotatably connected between the horizontal fixed bench clamp and the fixed clamp arm, a first positioning seat provided with a detection groove and a second positioning seat provided with a top shaft groove are fixedly connected to the upper portions of the fixed clamp arm and the movable clamp arm respectively, and a to-be-detected motor provided with a motor spindle is placed on the upper portions of the first positioning seat and the second positioning seat. One side of the second positioning seat is detachably connected with an elastic pressure head part provided with a top shaft end, and the top shaft end penetrates through the top shaft groove and is located on the same axis with the motor spindle and the flat probe. According to the utility model, the to-be-detected motor can be quickly clamped and positioned, the device can adapt to motors with various boundary dimensions, the universality is good, the human factor error is reduced, and the detection is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of motor detection, in particular to a general detection device for motor shaft clearance. Background Art

[0002] The axial clearance of a motor, also known as "motor shaft clearance", is one of the physical property indexes of the whole machine that must be detected after the motor is assembled in the motor manufacturing industry. It refers to the axial movable distance that must exist when the rotor of the motor is axially limited by parts such as the stator and end cover. The purpose of detecting the axial clearance value is to screen whether the parts are qualified to ensure the normal operation of the assembled motor during subsequent use. If the detected value of the motor shaft clearance is unqualified, the parts should be repaired or adjusted in other ways until they are qualified. Otherwise, the motor is prone to failure during use and even affects the service life of the motor.

[0003] The applicant has a patent document with the publication number of CN221123274U, which discloses a device for quickly detecting the axial clearance of a motor spindle. The motor to be detected can be placed on the upper part of a trough-shaped seat, and the axial clearance of the motor spindle can be quickly detected through a dial indicator and an elastic pressing component. Its structure is simple, the detection is accurate, and it is convenient for personnel to operate. However, this technical solution has certain requirements for the size specifications of the detected motors, and the adjustable range of the detection device is limited. When the external dimensions of the motors are quite different, the motors cannot be positioned, and a set of test devices needs to be redesigned and customized, so the use scenario of the detection device is limited. Content of the Utility Model

[0004] In order to solve the technical problems existing in the prior art that the adjustable range of the detection device is limited, when the external dimensions of the motor are large or small, the motor cannot be positioned, and the use scenario of the detection device is limited, the utility model provides the following technical solutions.

[0005] A general detection device for motor shaft clearance of the utility model includes a base. One side of the upper part of the base is detachably connected with a dial indicator through a gauge holder. The dial indicator is provided with a flat head probe. A horizontal fixed bench vice is arranged on the upper part of the base on one side of the gauge holder. The horizontal fixed bench vice is connected with a fixed jaw and slidably connected with a movable jaw. A screw rod threadedly connected with the movable jaw is rotatably connected between the horizontal fixed bench vice and the fixed jaw. The upper parts of the fixed jaw and the movable jaw are respectively fixedly connected with a first positioning seat provided with a detection groove and a second positioning seat provided with a shaft jacking groove. A motor to be detected provided with a motor spindle is placed on the upper parts of the first positioning seat and the second positioning seat. One side of the second positioning seat is detachably connected with an elastic pressing head component provided with a shaft jacking end. The shaft jacking end passes through the shaft jacking groove and is on the same axis as the motor spindle and the flat head probe.

[0006] As a further technical solution, a plurality of mounting holes, a first screw and a second screw matching the mounting holes are provided at the lower part of the horizontal fixed vise, and threaded holes matching the first screw and the second screw are provided at the lower parts on both sides of the fixed jaw arm and the movable jaw arm.

[0007] As a further technical solution, a dial rod clamp sleeve is provided at the upper part of the dial gauge stand, and the dial rod clamp sleeve is used to adjust the distance between the flat head probe of the dial indicator and the motor main shaft.

[0008] As a further technical solution, a first positioning plate provided with a detection groove and a second positioning plate provided with a jackshaft groove are respectively connected to the first positioning seat and the second positioning seat, and the first positioning plate and the second positioning plate are both provided with V-shaped grooves or arc grooves arranged oppositely for placing the motor to be tested.

[0009] As a further technical solution, the detection groove is a through groove with an upward extending notch for the motor main shaft to pass through.

[0010] As a further technical solution, the elastic pressing head assembly includes a bushing slidably connected with a moving shaft detachably connected to the second positioning seat and a pressing cover covering one side of the bushing, and the moving shaft includes a limiting end located inside the bushing and a jackshaft end and a pressing head located at both ends of the bushing.

[0011] As a further technical solution, a spring that moves inside the bushing is sleeved on the outer periphery of the moving shaft.

[0012] The beneficial effects of the present utility model: The fixed jaw arm and the movable jaw arm are connected to the upper part of the horizontal fixed vise of the present utility model. The screw rod and the movable jaw arm are in threaded cooperation. The movable jaw arm is moved by rotating the screw rod through the handle, and then the second positioning seat is moved to cooperate with the first positioning seat to stably clamp the motor to be tested. The clamping and positioning are fast and the measurement is accurate. It can adapt to the detection of motors with various external dimensions and has good versatility. The first positioning seat and the second positioning seat are provided with V-shaped grooves or arc grooves, which can be adapted to motors of various different specifications. Cooperating with the elastic pressing head assembly to push the motor main shaft, the dial indicator monitors the axial clearance of the motor main shaft, reducing the error caused by human factors and making the detection more accurate. Description of the Drawings

[0013] Figure 1 is a schematic plan view of the motor shaft clearance universal detection device of the present utility model;

[0014] Figure 2 is a connection schematic diagram of the horizontal fixed vise of the motor shaft clearance universal detection device of the present utility model;

[0015] Figure 3 is an exploded schematic diagram of the horizontal fixed vise of the motor shaft clearance universal detection device of the present utility model;

[0016] Figure 4 are schematic diagrams of the first positioning seat and the second positioning seat of the general motor shaft clearance detection device of the present utility model;

[0017] Figure 5 is a schematic diagram of the connection of the dial indicator of the general motor shaft clearance detection device of the present utility model;

[0018] Figure 6 is a schematic cross-sectional view of the elastic pressing head assembly of the general motor shaft clearance detection device of the present utility model;

[0019] In the figure: 1 - base; 2 - horizontal fixed bench vice; 201 - first screw; 202 - second screw; 203 - chute; 3 - fixed vice arm; 4 - movable vice arm; 5 - screw; 501 - handle; 6 - dial indicator; 601 - flat head probe; 7 - first positioning seat; 701 - first positioning plate; 702 - detection groove; 8 - second positioning seat; 801 - second positioning plate; 802 - shaft top groove; 9 - elastic pressing head assembly; 901 - bushing; 902 - gland; 903 - moving shaft; 904 - limiting end; 905 - shaft top end; 906 - pressing head; 907 - spring; 10 - motor to be tested; 11 - motor main shaft; 12 - dial indicator frame; 13 - dial rod clamp sleeve. Specific embodiments

[0020] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0021] In the description of the present utility model, it should be understood that the terms "upper" and "lower" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present utility model 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 a limitation of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0022] Such as Figure 1 And Figure 5As shown, in a preferred embodiment, a general detection device for the gap of a motor shaft according to the present utility model includes a base 1. On one side of the upper part of the base 1, a dial indicator 6 is detachably connected through a dial gauge holder 12. The dial gauge holder 12 can be lifted and lowered on the upper part of the base 1, and a dial rod clamp 13 is provided on the upper part of the dial gauge holder 12. The dial rod clamp 13 is used to clamp the dial rod of the dial indicator 6 and adjust it in the horizontal direction, which can be used to adjust the distance between the flat head probe 601 of the dial indicator 6 and the motor main shaft 11.

[0023] As Figure 2 and Figure 3 As shown, in a preferred embodiment, a horizontal fixed bench vice 2 is provided on the upper part of the base 1 on one side of the dial gauge holder 12. The horizontal fixed bench vice 2 is fixed to the upper part of the base 1 by bolts. One end of the horizontal fixed bench vice 2 close to the dial indicator 6 is connected to a fixed jaw 3 by bolts, and a chute 203 is provided at the bottom of the horizontal fixed bench vice 2. The fixed jaw 3 can be adjusted in the horizontal direction at the lower part of the horizontal fixed bench vice 2. A movable jaw 4 is slidably connected in the chute. A screw rod 5 is rotatably connected between the horizontal fixed bench vice 2 and the fixed jaw 3. The screw rod 5 is threadedly connected to the movable jaw 4, and the screw rod 5 is provided with a handle 501. Turning the handle 501 makes the screw rod 5 rotate, and the screw rod 5 drives the movable jaw 4 to move axially in the horizontal fixed bench vice 2, so that the movable jaw 4 approaches or moves away from the fixed jaw 3.

[0024] Multiple mounting holes and first screws 201 and second screws 202 matching the mounting holes are provided at the lower part of the horizontal fixed bench vice 2. Threaded holes matching the first screws 201 and second screws 202 are provided at the lower parts on both sides of the fixed jaw 3 and the movable jaw 4. The first screw 201 is used to cooperate with the mounting hole to adjust the fixed jaw 3 in the horizontal direction on the horizontal fixed bench vice 2. After the movable jaw 4 moves to a suitable position, the second screw 202 can stably position the movable jaw 4 to prevent the wrong movement of the movable jaw 4 caused by accidentally touching the handle 501.

[0025] As Figure 1 and Figure 4 As shown, in a preferred embodiment, a first positioning seat 7 and a second positioning seat 8 are respectively fixedly connected to the upper parts of the fixed jaw 3 and the movable jaw 4. A motor 10 to be tested with a motor main shaft 11 is placed on the upper parts of the first positioning seat 7 and the second positioning seat 8. Specifically, the first positioning seat 7 and the second positioning seat 8 are respectively connected with a first positioning plate 701 and a second positioning plate 801. The first positioning plate 701 and the second positioning plate 801 are used to clamp the motor to be tested 10. The first positioning plate 701 is provided with a detection groove 702, and the detection groove 702 is a through groove with an upward extending notch for the motor main shaft 11 to pass through. The second positioning plate 801 is provided with a top shaft groove 802. Both the first positioning plate 701 and the second positioning plate 801 are provided with V-shaped grooves or arc grooves arranged oppositely for placing the motor to be tested 10.

[0026] AsFigure 1 and Figure 6 As shown in Figure 6 , in a preferred embodiment, an elastic pressing head assembly 9 provided with a top shaft end 905 is detachably connected to one side of the second positioning seat 8. The top shaft end 905 passes through the top shaft groove 802 and is on the same axis as the motor main shaft 11 and the flat head probe pin 601. During detection, the motor 10 to be measured is placed between the first positioning plate 701 and the second positioning plate 801. One end of the motor column 11 is aligned with the top shaft groove 802, and the other end passes through the detection groove 702 and is aligned with the flat head probe pin 601. The elastic pressing head assembly 9 is driven, the top shaft end 905 passes through the top shaft groove 802 and pushes the motor main shaft 11, and the other end of the motor main shaft 11 abuts against the flat head probe pin 601. The dial indicator 6 is used to detect the axial clearance. The detection method of the dial indicator 6 has been disclosed in the prior art of the applicant, and will not be elaborated herein.

[0027] In a preferred embodiment, the elastic pressing head assembly 9 includes a bushing 901 detachably connected to the second positioning seat 8. The bushing 901 is fixed to one side of the second positioning seat 8 by screws. A moving shaft 903 is slidably connected inside the bushing 901. A gland 902 is covered on one side of the bushing 901, and the gland 902 can prevent the moving shaft 903 from moving out. The moving shaft 903 includes a limiting end 904 located inside the bushing 901, and the limiting end 904 can prevent the moving shaft 903 from moving out from the other end of the bushing 901, ensuring the normal sliding of the moving shaft 903 inside the bushing 901. A top shaft end 905 and a pressing head 906 are respectively provided at both ends of the bushing 901. The top shaft end 905 is used to pass through the top shaft groove 802 to push the motor main shaft 11, and the pressing head 906 drives the movement of the moving shaft 903 inside the bushing 901. A spring 907 that moves inside the bushing 901 is sleeved on the outer periphery of the moving shaft 903. The spring 907 can prevent excessive pressing on the motor main shaft 11 and can return the moving shaft 903 and the top shaft end 905 after detection.

[0028] When the present utility model is in use, the horizontal fixed vise 2 is adjusted to a suitable position and locked in advance according to the size of the motor. The motor 10 to be measured is placed between the first positioning plate 701 and the second positioning plate 801 of the first positioning seat 7 and the second positioning seat 8. The top shaft end 905 of the elastic pressing head assembly 9 is inserted into the end cover hole at one end of the motor 10 to be measured and aligned with the motor main shaft 11, and the other end of the motor main shaft 11 is aligned with the flat head probe pin 601 with the position adjusted; the screw 5 on the horizontal fixed vise 2 is rotated through the handle 501 to move the movable jaw arm 4, and the second positioning seat is driven by the movable jaw arm 4 to clamp the motor 10 to be measured; then the dial indicator 6 is pre-pressed to a certain value, and the pressing head 906 of the elastic pressing head assembly 9 is pressed to the limit position, and the changed value shown on the display is the axial clearance value of the motor main shaft.

[0029] The preferred specific embodiments and examples of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments and examples. Within the scope of knowledge possessed by those skilled in the art, various changes or equivalent substitutions can be made without departing from the concept of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A general detection device for the gap of a motor shaft, comprising a base (1), characterized in that: On one side of the upper part of the base (1), a dial indicator (6) is detachably connected through a dial gauge holder (12). The dial indicator (6) is provided with a flat head probe (601). On the upper part of the base (1), a horizontal fixed vise (2) is provided on one side of the dial gauge holder (12). The horizontal fixed vise (2) is connected with a fixed jaw (3) and slidably connected with a movable jaw (4). A screw rod (5) threadedly connected with the movable jaw (4) is rotatably connected between the horizontal fixed vise (2) and the fixed jaw (3). On the upper parts of the fixed jaw (3) and the movable jaw (4), a first positioning seat (7) provided with a detection groove (702) and a second positioning seat (8) provided with a top shaft groove (802) are fixedly connected respectively. A motor to be tested (10) provided with a motor main shaft (11) is placed on the upper parts of the first positioning seat (7) and the second positioning seat (8). On one side of the second positioning seat (8), an elastic pressing head assembly (9) provided with a top shaft end (905) is detachably connected. The top shaft end (905) passes through the top shaft groove (802) and is on the same axis as the motor main shaft (11) and the flat head probe (601).

2. The general detection device for the motor shaft clearance according to claim 1, characterized in that: Multiple mounting holes and first screws (201) and second screws (202) matching the mounting holes are provided at the lower part of the horizontal fixed vise (2). Threaded holes matching the first screws (201) and second screws (202) are provided at the lower parts on both sides of the fixed jaw (3) and the movable jaw (4).

3. The general detection device for the motor shaft clearance according to claim 1, wherein: A dial rod jacket (13) is provided at the upper part of the dial gauge holder (12). The dial rod jacket (13) is used to adjust the distance between the flat head probe (601) of the dial indicator (6) and the motor main shaft (11).

4. The general detection device for the motor shaft clearance according to claim 1, characterized in that: The first positioning seat (7) and the second positioning seat (8) are respectively connected with a first positioning plate (701) provided with a detection groove (702) and a second positioning plate (801) provided with a top shaft groove (802). The first positioning plate (701) and the second positioning plate (801) are both provided with oppositely arranged V-shaped grooves or arc grooves for placing the motor to be tested (10).

5. The general detection device for the motor shaft clearance according to claim 1, wherein: The detection groove (702) is a through groove with an upward extending notch for the motor main shaft (11) to pass through.

6. The general detection device for the motor shaft clearance according to claim 1, characterized in that: The elastic pressing head assembly (9) includes a bushing (901) slidably connected with the second positioning seat (8) and detachably connected, and a gland (902) covering one side of the bushing (901). The moving shaft (903) includes a limiting end (904) located inside the bushing (901) and a top shaft end (905) and a pressing head (906) located at both ends of the bushing (901).

7. The general detection device for the motor shaft clearance according to claim 6, characterized in that: A spring (907) that moves inside the bushing (901) is sleeved on the outer periphery of the moving shaft (903).

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