Floating type linear lead screw motor service life testing device

Abstract

The utility model discloses a floating type linear lead screw motor service life testing device which comprises a motor installation mechanism and a floating testing mechanism. The floating test mechanism comprises a pressure detection assembly, a sliding plate, a supporting assembly and a posture detection assembly. A tested motor is mounted on the motor mounting mechanism, and the motor mounting mechanism is fixed on the supporting assembly; the pressure detection assembly is fixed on the top surface of the sliding plate, the detected motor presses down the sliding plate through the pressure detection assembly, and the pressure detection assembly is used for detecting the down force of the detected motor in real time; the supporting assembly is used for supporting the sliding plate in a floating mode in the vertical movement process of the sliding plate and adjusting the inclination degree of the sliding plate relative to the horizontal plane. The utility model provides a floating type linear lead screw motor service life testing device, which is structurally improved, fits the actual use scene of a motor as much as possible in the process of testing the service life of the linear lead screw motor, and is more accurate in testing result.

Description

TECHNICAL FIELD

[0001] The utility model relates to a floating type linear screw motor life test device belongs to motor test technical field. BACKGROUND

[0002] Linear screw motor is a kind of execution element that is converted into linear motion, it is mainly composed of screw rod, nut, motor and so on.

[0003] At present, the application scene of linear screw motor is very extensive, the existing linear screw motor life test device, all motor drag load does reciprocating linear motion and carries out life test. However, in some scenes, like heart pressing equipment, the stress surface of load is not a plane, in this use scene, in addition to the thrust of motor screw rod extension direction, other direction component force will be generated, if carrying out test according to the existing life test device, the load stress direction of test is not same with the load stress direction of actual use, and the test result will be different from actual use condition, so that the test result is inaccurate. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem, overcomes the insufficient of prior art, provides a floating type linear screw motor life test device, carries out structural improvement, in the process of linear screw motor life test, as far as possible to fit the actual use scene of motor, and the test result is more accurate.

[0005] In order to solve the above technical problem, the technical scheme of the utility model is:

[0006] A floating type linear screw motor life test device, it includes motor installation mechanism and floating test mechanism;

[0007] The floating test mechanism includes pressure detection assembly, sliding plate, support assembly and attitude detection assembly;

[0008] The motor installation mechanism is installed with the motor to be tested, and the motor installation mechanism is fixed on the support assembly;

[0009] The pressure detection assembly is fixed on the top surface of the sliding plate, the motor to be tested is pressed down to the sliding plate through the pressure detection assembly, and the pressure detection assembly is used for real-time detection of the pressure of the motor to be tested;

[0010] The support assembly is used for floating support to the sliding plate in the process of up-down movement of the sliding plate, and the inclination degree of the sliding plate relative to the horizontal plane is adjusted;

[0011] The attitude detection assembly is fixed on the bottom surface of the sliding plate, and the attitude detection assembly is used for real-time detection of the inclination degree of the sliding plate relative to the horizontal plane in the process of up-down movement.

[0012] Further, the motor mounting mechanism comprises a motor mounting plate, an upper support column and an upper plate, the upper support column is fixed on the top surface of the upper plate, the motor mounting plate is arranged on the upper support column, the measured motor is mounted on the motor mounting plate, and the bottom surface of the upper plate is fixed on the support assembly.

[0013] Further, the motor mounting mechanism further comprises a fixing ring, the motor mounting plate is in sliding connection with the upper support column, the fixing ring is sleeved on the upper support column, the top surface of the fixing ring is connected with the motor mounting plate, and the side wall of the fixing ring is connected with the upper support column.

[0014] Further, the motor mounting mechanism further comprises a limiting washer and a limiting screw, the limiting washer is arranged on the motor mounting plate, the limiting screw passes through the limiting washer and the motor mounting plate in sequence and is connected with the top of the upper support column.

[0015] Further, the pressure detection assembly comprises a pressing block, a pressure sensor and a pad, the pad is fixed on the top surface of the sliding plate, the pressure sensor is fixed on the top surface of the pad, the pressing block is arranged on the output shaft of the measured motor, and the output shaft of the measured motor applies pressure to the pressure sensor through the pressing block.

[0016] Further, the attitude detection assembly is an attitude sensor.

[0017] Further, the support assembly comprises a bottom plate, a lower support column and a spring, the bottom of the lower support column is fixedly connected with the bottom plate, the top of the lower support column is fixedly connected with the upper plate, the sliding plate is in sliding connection with the lower support column, and the spring is sleeved on the outer periphery of the lower support column and used for supporting the sliding plate during the up-down movement of the sliding plate.

[0018] Further, the top surface of the sliding plate is fixed with a gap adjusting block, and the gap adjusting block is located on the outer periphery of the lower support column.

[0019] Further, the support assembly further comprises an upper limiting block, the upper limiting block is fixed on the bottom surface of the sliding plate and in sliding connection with the lower support column, and the upper limiting block is used for limiting the top of the spring.

[0020] Further, the support assembly further comprises a lower positioning block and a lower limiting nut.

[0021] The lower positioning block is in sliding connection with the lower support column, and the lower positioning block is used for positioning the bottom of the spring.

[0022] The lower limiting nut is fixed on the outer periphery of the lower support column, the lower limiting nut is located below the lower positioning block, and the lower limiting nut is used for limiting and fixing the lower positioning block.

[0023] The utility model discloses the following beneficial effects are obtained by adopting the technical scheme:

[0024] 1、The utility model discloses install pressure sensor at the output shaft of the motor of being measured, can detect the size of motor every time depression, and whether the spring is ageing, be convenient for timely adjustment, guarantee the accuracy of test result.

[0025] 2、The utility model discloses install attitude sensor on the sliding board, can detect the inclination angle of sliding board in every time up and down movement in real time, guarantee the accuracy of test result.

[0026] 3、Through the design of polyurethane pad and gap adjusting block, use spring as the floating support of sliding board, through the floating inclination of sliding board in the up and down movement, can simulate the working condition of motor under the situation that the force surface is not plane, make the result of motor life test more accurate.

[0027] 4、For different stroke motor, can adjust the installation position of fixed ring, adjust the height of motor mounting plate of being measured, satisfy the test demand of different stroke motor.

[0028] 5、When the spring produces fatigue ageing, the load force of spring output can be small, can adjust the spring lower positioning block and spring lower positioning nut upwards below, realize the pre -pressing of spring through shortening the distance, increase the deformation of spring, make the load force of spring maintain in the range required. DRAWINGS

[0029] Figure 1 It is the perspective view of a floating type linear screw motor life test device of the utility model;

[0030] Figure 2 It is the bottom view of Figure 1 ;

[0031] Figure 3 It is the effect drawing of spring pressing to the position of the utility model;

[0032] Figure 4 It is the effect drawing of spring not pressing to the position of the utility model;

[0033] Figure 5 It is the structure schematic view of support assembly of the utility model;

[0034] Figure 6 It is the structure schematic view of the utility model after removing gap adjusting block. DETAILED DESCRIPTION

[0035] In order to make the content of the utility model more easily be clearly understood, the utility model is further explained in detail below according to specific embodiment and in conjunction with the drawings.

[0036] As shown in Figure 1 , the embodiment provides a floating linear motor life test device, which comprises a motor mounting mechanism and a floating test mechanism. The test device is used for testing the life of a linear motor. The motor to be tested 3 is mounted on the motor mounting mechanism. During the test, the motor to be tested 3 exerts a downward thrust on the floating test mechanism to test the life.

[0037] As shown in Figure 1 , 2 , the motor mounting mechanism of the embodiment comprises a motor mounting plate 41, an upper support column 42, an upper plate 43, a fixing ring 44, a limiting washer 45 and a limiting screw 46.

[0038] Specifically, the upper support column 42 is fixed on the top surface of the upper plate 43, and the motor mounting plate 41 is arranged on the upper support column 42. The motor to be tested 3 is mounted on the motor mounting plate 41. The motor mounting plate 41 of the embodiment is made of 45# steel and is electroplated, which is strong and beautiful. It is installed above the four upper support columns 42 and used for mounting the motor to be tested 3. The number of upper support columns 42 is four, which are made of 45# steel and have high support strength. They are installed on the upper plate 43 and mainly used for supporting the motor mounting plate 41 and the motor to be tested 3 above. The upper plate 43 is fixed on the floating test mechanism and is made of 45# steel and electroplated.

[0039] The motor mounting plate 41 is slidably connected with the upper support column 42. The fixing ring 44 is sleeved on the upper support column 42. The top surface of the fixing ring 44 is connected with the motor mounting plate 41, and the side wall of the fixing ring 44 is connected with the upper support column 42. The number of fixing rings 44 in the embodiment is four, which are made of 45# steel and electroplated. The top surface of the fixing ring 44 is fixed with the motor mounting plate 41 by screws, and the side wall of the fixing ring 44 is connected with the upper support column 42 by screws. The height of the motor mounting plate 41 can be adjusted by loosening the screws on the side wall of the fixing ring 44, so as to meet the test requirements of motors with different strokes.

[0040] The limiting washer 45 is arranged on the motor mounting plate 41, and the limiting screw 46 is connected with the top of the upper support column 42 in sequence after passing through the limiting washer 45 and the motor mounting plate 41. The limiting washer 45 is fastened by the limiting screw 46. The number of limiting washers 45 is four, which are made of 45# steel and used for limiting the height of the motor mounting plate 41.

[0041] As shown in Figure 1 , 2 , the floating test mechanism of the embodiment comprises a pressure detection assembly, a sliding plate 1, a support assembly and a posture detection assembly 2.

[0042] Specifically, the pressure detection assembly is fixed on the top surface of the sliding plate 1, and the measured motor 3 presses the sliding plate 1 through the pressure detection assembly during the life test, and the pressure detection assembly is used to detect the pressing force of the measured motor 3 in real time.

[0043] During the up-down movement of the sliding plate 1, the sliding plate 1 is floatingly supported by the support assembly, and the inclination of the sliding plate 1 relative to the horizontal plane is adjusted.

[0044] The posture detection assembly 2 is fixed on the bottom surface of the sliding plate 1, and the posture detection assembly 2 in the embodiment is a posture sensor, which detects the inclination of the sliding plate 1 relative to the horizontal plane during the up-down movement, so as to ensure the accuracy of the test results.

[0045] As shown in Figure 1 , 5 , the support assembly in the embodiment includes a bottom plate 61, a lower support column 62 and a spring 63. The bottom of the lower support column 62 is fixedly connected with the bottom plate 61, the top of the lower support column 62 is fixedly connected with the upper plate 43 of the motor mounting mechanism, the sliding plate 1 is slidingly connected with the lower support column 62, and the spring 63 is sleeved on the outer periphery of the lower support column 62. The spring 63 is used to support the sliding plate 1 during the up-down movement of the sliding plate 1. The bottom plate 61 in the embodiment is made of 45# steel and is electroplated, and is used to mount the lower support column 62. The bottom of the bottom plate 61 is provided with a foot pad 611, which plays a role of shock absorption and buffer protection. The number of the lower support column 62 is four, which is made of 45# steel and is electroplated, and is a main supporting component of the floating test mechanism. The number of the spring 63 is four, which is sleeved on the four studs. The spring 63 is used as a load, and is selected according to the force required by the motor life test. The sliding plate 1 is made of 45# steel and is electroplated. Four round holes in the sliding plate 1 pass through the lower support column 62.

[0046] As shown in Figure 1 , the top surface of the sliding plate 1 in the embodiment is fixed with a gap adjusting block 64, and the gap adjusting block 64 is located on the outer periphery of the lower support column 62. The gap adjusting block 64 is made of 45# steel and is electroplated, and is used to adjust the radial gap between the sliding plate 1 and the lower support column 62, as shown in Figure 6 . If the four gap adjusting blocks 64 are removed, the radial gap between the sliding plate 1 and the lower support column 62 becomes larger, so that the floating space of the sliding plate 1 becomes larger. If the four gap adjusting blocks 64 are installed, the radial gap between the sliding plate 1 and the lower support column 62 becomes smaller, so that the floating space of the sliding plate 1 becomes smaller. Thus, various working states of the measured motor 3 under the condition that the force receiving surface is not a plane are simulated, so that the test results of the motor life test are more accurate.

[0047] As shown in Figure 1As shown in the drawings, the support assembly of the embodiment further comprises an upper limiting block 65 fixed on the bottom surface of the sliding plate 1 and in sliding connection with the lower support column 62, and the upper limiting block 65 is used for limiting the top of the spring 63. The upper limiting block 65 of the spring 63 is made of 45# steel and is electroplated, and is installed on the bottom surface of the sliding plate 1 to limit the top of the spring 63, so that the stress position of the top of the spring 63 is fixed.

[0048] As shown in the drawings, Figure 1 The support assembly of the embodiment further comprises a lower positioning block 66 and a lower limiting nut 67, both of which are made of 45# steel and are electroplated. The lower positioning block 66 is in sliding connection with the lower support column 62, and the lower positioning block 66 is used for positioning the bottom of the spring 63. The lower limiting nut 67 is screwed with the outer periphery of the lower support column 62, and the lower limiting nut 67 is located below the lower positioning block 66, and the lower limiting nut 67 is used for limiting and fixing the lower positioning block 66. When the spring 63 is fatigued and aged, the load force output by the spring 63 will become smaller, and the lower positioning block 66 and the lower limiting nut 67 below can be adjusted upward, so that the pre-pressing of the spring 63 is realized by shortening the distance, the deformation amount of the spring 63 is increased, and the load force generated by the spring 63 is maintained within the required range.

[0049] As shown in the drawings, Figure 1 The pressure detection assembly comprises a pressing block 51, a pressure sensor 52 and a cushion block 53. The cushion block 53 is fixed on the top surface of the sliding plate 1, the pressure sensor 52 is fixed on the top surface of the cushion block 53, and the pressing block 51 is arranged on the output shaft of the measured motor 3. The output shaft of the measured motor 3 applies pressure to the pressure sensor 52 through the pressing block 51. The pressing block 51 is made of 45# steel and is electroplated, and is installed at the output shaft of the measured motor 3 to transmit the thrust output by the motor. The cushion block 53 is made of polyurethane material and is installed on the sliding plate 1 as a cushion block 53 to evenly distribute the downward pressure generated by the measured motor 3 on the sliding plate 1. The pressure sensor 52 is installed above the cushion block 53, and the measured motor 3 transmits the force to the pressure sensor 52 through the pressing block 51 to detect whether the downward pressure of the motor meets the test requirements in real time, and to detect the aging of the spring 63 during the test, so that the spring 63 can be replaced in time.

[0050] The working principle of the utility model is as follows:

[0051] During the test, the measured motor 3 applies a downward thrust, as shown in the drawings, Figure 3 , 4 The spring 63 is compressed downward, the spring 63 is selected and calculated according to the required load force of the measured motor 3, the height of the measured motor 3 mounting plate is adjusted, the required force of the deformation amount generated by the spring 63 is determined, and the service life test is performed.

[0052] The sliding plate 1 has a radial gap at the circular hole matched with the lower supporting column 62, wherein the size of the gap can be adjusted by disassembling and assembling the gap adjusting block 64. Since the elastic force among the four springs 63 is not completely equal, and the center of the measured motor 3 has a certain distance from the center of the cushion block 53 during the installation process, the sliding plate 1 is floating up and down and left and right during the up and down movement. Since the position of the sliding plate 1 is floating each time it rises, the position of the measured motor 3 is also different each time it is pressed down, and the size and direction of the force generated are also different. The polyurethane cushion block 53 and the pressure sensor 52 are installed above the sliding plate 1, which can detect the size of the motor pressing force in real time and whether the spring 63 is aging, so as to make the test result more accurate. The attitude sensor is installed on the bottom surface of the sliding plate 1, which can detect the inclination of the sliding plate 1 relative to the horizontal plane during the up and down movement in real time, so as to ensure the accuracy of the test result.

[0053] For the fatigue aging of the spring 63, the size of the load force of the spring 63 is detected by the pressure sensor 52, when the spring 63 is fatigue aged, the lower positioning block 66 and the lower limiting nut 67 below can be adjusted upward, the spring 63 is pre-pressed, the deformation amount of the spring 63 is increased, and the load force generated by the spring 63 meets the test requirement.

[0054] For the motors with different strokes, the height of the motor mounting plate 41 can be adjusted by the fixing ring 44, so as to adapt to the test requirement of the motors with different strokes.

[0055] The above specific embodiments further specifically describe the technical problems, technical solutions and beneficial effects solved by the utility model, and it should be understood that the above description is only for the specific embodiments of the utility model and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A floating linear motor life test device, characterized by: It includes motor installation mechanism and floating test mechanism; The floating test mechanism includes pressure detection component, sliding plate (1), support component and attitude detection component (2); The motor installation mechanism is fixed on the support component; The pressure detection component is fixed on the top surface of the sliding plate (1), the measured motor (3) presses the sliding plate (1) through the pressure detection component, and the pressure detection component is used for detecting the pressing force of the measured motor (3) in real time. The support component is used for floating supporting the sliding plate (1) during the up-down movement of the sliding plate (1) and adjusting the inclination degree of the sliding plate (1) relative to the horizontal plane. The attitude detection component (2) is fixed on the bottom surface of the sliding plate (1), and the attitude detection component (2) is used for detecting the inclination degree of the sliding plate (1) relative to the horizontal plane in real time during the up-down movement.

2. The floating linear ball screw motor life test apparatus of claim 1, wherein: The motor installation mechanism includes motor installation plate (41), upper support column (42) and upper plate (43), the upper support column (42) is fixed on the top surface of the upper plate (43), the motor installation plate (41) is arranged on the upper support column (42), the measured motor (3) is installed on the motor installation plate (41), and the bottom surface of the upper plate (43) is fixed on the support component.

3. The floating linear ball screw motor life test apparatus of claim 2, wherein: The motor installation mechanism further includes fixing ring (44), the motor installation plate (41) is slidably connected with the upper support column (42), the fixing ring (44) is sleeved on the upper support column (42), the top surface of the fixing ring (44) is connected with the motor installation plate (41), and the side wall of the fixing ring (44) is connected with the upper support column (42).

4. The floating linear ball screw motor life test apparatus of claim 2, wherein: The motor installation mechanism further includes limiting gasket (45) and limiting screw (46), the limiting gasket (45) is arranged on the motor installation plate (41), and the limiting screw (46) is connected with the top of the upper support column (42) in sequence after penetrating through the limiting gasket (45) and the motor installation plate (41).

5. The floating linear ball screw motor life test apparatus of claim 1, wherein: The pressure detection component includes pressing block (51), pressure sensor (52) and pad block (53), the pad block (53) is fixed on the top surface of the sliding plate (1), the pressure sensor (52) is fixed on the top surface of the pad block (53), the pressing block (51) is arranged on the output shaft of the measured motor (3), and the output shaft of the measured motor (3) applies pressure to the pressure sensor (52) through the pressing block (51).

6. The floating linear ball screw motor life test apparatus of claim 1, wherein: The attitude detection component (2) is an attitude sensor.

7. The floating linear ball screw motor life test apparatus of claim 2, wherein: The support component includes bottom plate (61), lower support column (62) and spring (63), the bottom of the lower support column (62) is fixedly connected with the bottom plate (61), the top of the lower support column (62) is fixedly connected with the upper plate (43), the sliding plate (1) is slidably connected with the lower support column (62), and the spring (63) is sleeved on the outer periphery of the lower support column (62).

8. The floating linear ball screw motor life test apparatus of claim 7, wherein: The top surface of the sliding plate (1) is fixed with a gap adjusting block (64), and the gap adjusting block (64) is located at the outer periphery of the lower supporting column (62).

9. The floating linear ball screw motor life test apparatus of claim 7, wherein: The supporting assembly further comprises an upper limiting block (65) which is fixed to the bottom surface of the sliding plate (1) and is in sliding connection with the lower supporting column (62), and the upper limiting block (65) is used for limiting the top of the spring (63).

10. The floating linear ball screw motor life test apparatus of claim 7, wherein: The supporting assembly further comprises a lower positioning block (66) and a lower limiting nut (67); The lower positioning block (66) is in sliding connection with the lower supporting column (62), and the lower positioning block (66) is used for positioning the bottom of the spring (63); The lower limiting nut (67) is fixed to the outer periphery of the lower supporting column (62), and the lower limiting nut (67) is located below the lower positioning block (66), and the lower limiting nut (67) is used for limiting and fixing the lower positioning block (66).

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