Thrust testing mechanism

Abstract

The utility model relates to the technical field of motor testing, in particular to a thrust testing mechanism, which is characterized in that a base comprises a top plate and a bottom plate which are connected through a sliding rod; the upper moving plate is slidably arranged on the sliding rod; the testing electric cylinder is connected to the top of the base and used for driving the upper moving plate to be in the length direction of the sliding rod. The lower moving plate is arranged on the sliding rod in a sliding mode and located below the upper moving plate, and a weight sensor is arranged on the side, close to the upper moving plate, of the lower moving plate; the spring is located between the upper moving plate and the lower moving plate, and the two ends of the spring abut against the upper moving plate and the weight sensor respectively. The adjusting device is used for adjusting the distance between the lower moving plate and the bottom plate. The distance between the lower moving plate and the bottom plate is adjusted through the adjusting device, so that the tested thrust value is adjusted, more measurable thrust intervals can be covered, the operation is convenient, the test tool does not need to be reassembled, and the test procedure is greatly simplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor test technical field, especially push force test mechanism of a kind of. BACKGROUND

[0002] Stepping motor is the electric motor that electric pulse type is changed into angular displacement or linear displacement, stepping motor will produce push force fluctuation in operation process, push force fluctuation is the reason of motor vibration and noise, therefore, the push force of stepping motor is one of the key detection contents.

[0003] Current motor push force test tool, generally using motor drive screw mode to measure, such as the Chinese utility model patent with publication No. CN219657063U discloses a push force test tool, including vertical plate and mobile module, track is arranged along the vertical plate up-down direction, mobile module is slidably installed on the track, and gravity block is slidably placed in mobile module, the motor to be measured is driven to move by exerting upward force on mobile module, if the motor to be measured can normally drive mobile module to move upwards, it can indicate that the push of the motor to be measured meets the test requirements. However, when the above-mentioned tool needs to change the push force test range, different gravity blocks need to be replaced, which leads to the need to reinstall the test tool and adjust, not only the operation is troublesome, but also time-consuming and laborious. UTILITY MODEL CONTENTS

[0004] The utility model aims at: in view of the problems in the background art, provide a kind of push force test mechanism.

[0005] The utility model provides a kind of push force test mechanism, comprising:

[0006] Base, the base includes top plate and bottom plate, the top plate and the bottom plate are connected by slide bar;

[0007] Upper moving plate, the upper moving plate is slidably arranged on the slide bar;

[0008] Test cylinder, the test cylinder is connected at the top of the base, and the test cylinder is used to drive the upper moving plate along the length direction of the slide bar;

[0009] Lower moving plate, the lower moving plate is slidably arranged on the slide bar, and the lower moving plate is below the upper moving plate, and the side of the lower moving plate close to the upper moving plate is provided with weight sensor;

[0010] Spring, the spring is located between the upper moving plate and the lower moving plate, and the both ends of the spring are respectively abutted with the upper moving plate and the weight sensor;

[0011] Adjusting device, the adjusting device is used to adjust the distance between the lower moving plate and the bottom plate.

[0012] The thrust test mechanism described in the application assembles the motor to be tested on the test cylinder, and the test cylinder is driven by the motor to be tested, so as to convert the rotary motion of the motor to be tested into the linear motion of the test cylinder. When the thrust test is carried out, the test cylinder drives the upper moving plate to move downward along the slide rod. When the upper moving plate moves downward, the spring is extruded, the spring extrudes the weight sensor downward, so that the spring exerts a thrust on the weight sensor, so as to collect the thrust value. Further, the distance between the lower moving plate and the bottom plate is adjusted by the adjusting device, so as to adjust the test thrust value. That is, by changing the distance between the lower moving plate and the bottom plate, the initial elastic deformation of the spring is adjusted. In the subsequent test of the thrust of the motor to be tested, more measurable thrust intervals can be covered, thereby facilitating the adjustment of the upper limit of the measured thrust during the thrust test. The operation is convenient, and the test tool does not need to be reassembled, which greatly simplifies the test process.

[0013] Preferably, the adjusting device comprises a first pressure head connected to one side of the bottom plate away from the lower moving plate, and an adjusting screw is rotatably arranged on the first pressure head, one end of the adjusting screw penetrating through the first pressure head and being bolted to the lower moving plate.

[0014] Preferably, a through hole is arranged at the center of the first pressure head, a first threaded hole is arranged at the center of the lower moving plate, and the tail of the adjusting screw penetrates through the first through hole and is threadedly connected in the first threaded hole.

[0015] Preferably, the adjusting device further comprises a baffle plate installed on one side of the first pressure head away from the bottom plate, and the baffle plate abuts against the adjusting screw.

[0016] Preferably, the baffle plate is provided with a containing groove, and the head of the adjusting screw is located in the containing groove.

[0017] Preferably, a rotating channel is arranged at the center of the bottom of the containing groove, and the rotating channel penetrates through the baffle plate.

[0018] Preferably, the adjusting device comprises a driving cylinder connected to the bottom plate, and a second movable rod of the driving cylinder is used to connect with the upper moving plate.

[0019] Preferably, the adjusting device further comprises a second pressure head arranged on one side of the lower moving plate away from the weight sensor, and the second movable rod is fixedly connected with the second pressure head.

[0020] Preferably, a conversion rod is further included, one end of the conversion rod is connected with the first movable rod of the test cylinder, and the other end of the conversion rod is fixedly connected with the upper moving plate.

[0021] Preferably, linear bearings are arranged on the upper moving plate and the lower moving plate, and the slide rod is assembled on the linear bearings.

[0022] Compared with the prior art, the utility model has the beneficial effects of:

[0023] The thrust test mechanism disclosed by the application assembles the motor to be tested on the test cylinder, and the test cylinder is driven by the motor to be tested, so that the rotary motion of the motor to be tested is converted into the linear motion of the test cylinder; when the thrust test is performed, the test cylinder drives the upper moving plate to move downward along the slide rod; the upper moving plate is pressed when moving downward, the spring is pressed downward to press the weight sensor, so that the spring exerts a thrust on the weight sensor to collect the thrust value; further, the distance between the lower moving plate and the bottom plate is adjusted by the adjusting device, so that the thrust value of the test is adjusted; that is, the initial elastic deformation amount of the spring is adjusted by changing the distance between the lower moving plate and the bottom plate; when the thrust of the motor to be tested is tested subsequently, more measurable thrust intervals can be covered, so that the upper limit of the thrust during the thrust test is adjusted conveniently, and the test process is greatly simplified without the need of reassembling the test tool. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a perspective view of the application.

[0025] Figure 2 is a sectional view of the application (omitting the spring).

[0026] Figure 3 is a structural schematic view of the base.

[0027] Figure 4 is Figure 2 is a partial enlarged view of A of

[0028] Figure 5 is a schematic view of a preferred mode of the adjusting device.

[0029] Figure 6 is a schematic view of another preferred mode of the adjusting device.

[0030] Figure 7 is Figure 6 is a partial enlarged view of B of

[0031] MARKS IN THE DRAWINGS:

[0032] 1-base, 11-top plate, 12-slideway, 13-bottom plate, 2-upper moving plate, 3-lower moving plate, 31-first threaded hole, 4-weight sensor, 5-test electric cylinder, 51-cylinder structure, 52-first movable rod, 6-spring, 7-linear bearing, 10-motor to be tested, 20-load plate, 30-adjusting screw, 40-first pressure head, 401-first through hole, 50-baffle, 501-receiving groove, 60-second pressure head, 70-main electric cylinder, 701-second movable rod, 80-rotation channel, 90-conversion part, 901-connection head, 902-conversion rod. DETAILED DESCRIPTION

[0033] The utility model will be described in further detail below in combination with specific embodiments. But this should not be understood as the above-mentioned subject matter of the utility model is limited to the following examples only, and any technology realized based on the content of the utility model belongs to the scope of the utility model.

[0034] In the description of the specific embodiments of the utility model, the orientation or position relationship expression terms appearing in the description of the specific embodiments of the utility model, such as "up", "down", "left", "right", "center", "inner", "outer", etc. are based on the orientation or position relationship expression shown in the drawings, or are the orientation or position relationship placed when the product / equipment / device of the utility model is usually used. These orientation or position relationship terms are only used to facilitate the description of the utility model scheme or simplify the description in the specific embodiments, so as to facilitate the quick understanding of the scheme by the technicians, and are not used to indicate or imply that the specific device / part / element must have a specific orientation, or be constructed and operated in a specific position relationship, so it cannot be understood as a limitation of the utility model.

[0035] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel", "coaxial" and the like appear, it does not mean that the corresponding device / component / element must be absolutely horizontal or vertical or overhanging or parallel or coaxial, but can be slightly inclined or have a deviation, as long as it does not affect the normal function of the related component. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined; "coaxial" means that two components are coaxially arranged as much as possible, and can move in a coaxial or approximately coaxial manner when the relative position changes. Alternatively, it can be simplified to understand that the corresponding device / component / element is arranged in the "horizontal", "vertical", "overhanging", "parallel", "coaxial" and the like, and can have an error / deviation of ±10% relative to the corresponding direction, more preferably an error / deviation of ±8% or less, more preferably an error / deviation of ±6% or less, more preferably an error / deviation of ±5% or less, and more preferably an error / deviation of ±4% or less. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the utility model.

[0036] In addition, the terms "first", "second", "third" and the like in the terms are only used to distinguish the same or similar components for description, and should not be understood as emphasizing or implying the relative importance of the specific components.

[0037] In addition, in the description of the embodiments of the utility model, "several", "a plurality of", "several" represent at least 2. It can be 2, 3, 4, 5, 6, 7, 8, 9 and the like in any case, and even more than 9.

[0038] In addition, in the description of the technical scheme of the utility model, unless otherwise specified / limited / limited, the terms "set", "install", "connect", "connect", "set", "lay", "arrange" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, which can be welding, riveting, bolting, screw connection and other commonly used connection means in the art. The connection can be mechanical connection, electrical connection or communication connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements.

[0039] Embodiment 1

[0040] As shown in the figure, the thrust test mechanism described in the embodiment comprises: Figures 1-6

[0041] The base 1 comprises a top plate 11 and a bottom plate 13, and the top plate 11 and the bottom plate 13 are connected by a slide rod 12; ​

[0042] The upper moving plate 2 is slidingly arranged on the slide rod 12;

[0043] The test cylinder 5 is connected to the top of the base 1, and the test cylinder 5 is used to drive the upper moving plate 2 along the length direction of the slide rod 12;

[0044] The lower moving plate 3 is slidingly arranged on the slide rod 12, and the lower moving plate 3 is located below the upper moving plate 2, and the side of the lower moving plate 3 close to the upper moving plate 2 is provided with the weight sensor 4;

[0045] The spring 6 is located between the upper moving plate 2 and the lower moving plate 3, and the two ends of the spring 6 abut against the upper moving plate 2 and the weight sensor 4 respectively;

[0046] The adjusting device is used to adjust the distance between the lower moving plate 3 and the bottom plate 13.

[0047] When the thrust test is performed, the motor to be tested 10 is assembled on the test cylinder 5, the test cylinder 5 is driven through the motor to be tested 10, so as to convert the rotary motion of the motor to be tested 10 into the linear motion of the test cylinder 5, the test cylinder 5 drives the upper moving plate 2 to move downward along the slide rod 12, the upper moving plate 2 extrudes and pushes the spring 6 when moving downward, the spring 6 pushes the weight sensor 4 downward, so as to exert the thrust on the weight sensor 4 by the spring 6, so as to collect the thrust value, further, the distance between the lower moving plate 3 and the bottom plate 13 is adjusted through the adjusting device, so as to adjust the test thrust value, that is, the initial elastic deformation amount of the spring 6 is adjusted by changing the distance between the lower moving plate 3 and the bottom plate 13, more measurable thrust intervals can be covered when the thrust of the motor to be tested 10 is tested subsequently, and the upper limit of the measured thrust during the thrust test is adjusted conveniently, the operation is convenient, the test tool does not need to be reassembled, and the test process is greatly simplified.

[0048] If it is needed to increase the test thrust value, as shown in Figure 1 , Figure 2 , that is, the distance between the lower moving plate 3 and the bottom plate 13 is increased, that is, the lower moving plate 3 moves upward, the spring 6 is compressed when the lower moving plate 3 moves upward, so as to adjust the initial elastic deformation amount of the spring 610, the operator adjusts the initial elastic deformation amount of the spring 6, so that the compression amount of the spring 6 is larger when the upper moving plate 2 moves downward by the same distance, the spring 6 generates larger counterforce, so that more measurable thrust intervals can be covered when the thrust of the motor to be tested 10 is tested subsequently, and the upper limit of the measured thrust during the thrust test is adjusted conveniently.

[0049] In one or several embodiments, as shown in Figure 5As shown, the adjusting device comprises a first pressing head 40 connected to the bottom plate 13 away from the lower moving plate 3, and a adjusting screw 30 rotatably arranged on the first pressing head 40, with one end of the adjusting screw 30 penetrating through the first pressing head 40 and being bolted to the lower moving plate 3.

[0050] The adjusting screw 30 is used to drive the lower moving plate 3 to move relative to the bottom plate 13, and when the interval between the lower moving plate 3 and the bottom plate 13 needs to be adjusted, the adjusting screw 30 is rotated to drive the lower moving plate 3 to move relative to the bottom plate 13, so as to change the interval between the two plates and adjust the initial elastic deformation of the first spring 6.

[0051] Further, the adjusting screw 30 is used to drive the lower moving plate 3 to move along the length direction of the slide rod 12 relative to the bottom plate 13.

[0052] In an optional embodiment, as shown in Figure 5 The first pressing head 40 is centrally provided with a first through hole 401, the lower moving plate 3 is centrally provided with a first threaded hole 31, and the tail of the adjusting screw 30 penetrates through the first through hole 401 and is threadedly connected in the first threaded hole 31.

[0053] In this embodiment, the first pressing head 40 is bolted to the side of the bottom plate 13 away from the lower moving plate 3, the middle part of the first pressing head 40 is provided with a first through hole 401, and the middle part of the lower moving plate 3 is provided with a first threaded hole 31, as shown in Figure 5 The head of the adjusting screw 30 abuts against the first pressing head 40, the tail of the adjusting screw 30 penetrates through the first pressing head 40 and is threadedly connected in the first threaded hole 31 of the lower moving plate 3, and when the interval between the lower moving plate 3 and the bottom plate 13 needs to be adjusted, the adjusting screw 30 is rotated to adjust the matching length of the lower moving plate 3 and the adjusting screw 30, so as to move the lower moving plate 3 and adjust the interval between the lower moving plate 3 and the bottom plate 13.

[0054] In an optional embodiment, the adjusting screw 30 is a hexagonal head bolt, which comprises a tail, a light rod and a head, and the tail of the adjusting screw 30 is provided with threads for threadedly connecting with the first threaded hole 31 of the lower moving plate 3, and when the adjusting screw 30 needs to be rotated, the head of the adjusting screw 30 is rotated by a hexagonal wrench to adjust the interval between the lower moving plate 3 and the bottom plate 13.

[0055] In an optional embodiment, as shown in Figure 5 The adjusting device further comprises a baffle 50 installed on the side of the first pressing head 40 away from the bottom plate 13, and the baffle 50 abuts against the adjusting screw 30.

[0056] The adjusting screw 30 is protected by the baffle 50 to avoid being collided by other objects.

[0057] In an optional embodiment, as shown in Figure 5 The baffle 50 is provided with a receiving groove 501, and the head of the adjusting screw 30 is located in the receiving groove 501.

[0058] The baffle 50 is provided with the receiving groove 501 which matches the head of the adjusting screw 30, and the head of the adjusting screw 30 is located in the receiving groove 501, so that the baffle 50 is closely matched with the adjusting screw 30, and the baffle 50 can better protect the adjusting screw 30.

[0059] In an optional embodiment, as shown in Figure 5 The bottom center of the receiving groove 501 is provided with a rotating channel 80 which penetrates the baffle 50.

[0060] The rotating channel 80 can accommodate a hexagonal wrench which is matched with the adjusting screw 30, that is, the hexagonal wrench enters the receiving groove 501 through the rotating channel 80, so as to facilitate the hexagonal wrench to butt joint the adjusting screw 30. When it is needed to adjust the interval between the lower moving plate 3 and the bottom plate 13, the hexagonal wrench only needs to be inserted into the rotating channel 80 until it is matched with the adjusting screw 30, and then the hexagonal wrench is twisted to drive the adjusting screw 30 to rotate, so as to realize the interval adjustment between the lower moving plate 3 and the bottom plate 13.

[0061] In one or more embodiments, as shown in Figure 2 The test electric cylinder 5 includes a cylinder structure 51 and a first movable rod 52. The cylinder structure 51 is fixedly installed on the top of the top plate 11, and the first movable rod 52 penetrates the top plate 11 and is connected with the upper moving plate 2, so that when the first movable rod 52 is extended or retracted, the first movable rod 52 can drive the upper moving plate 2 to move.

[0062] In an optional embodiment, as shown in Figure 4 The test electric cylinder 5 further includes a conversion part 90. One end of the conversion part 90 is connected with the first movable rod 52, and the other end of the conversion part 90 is fixed on the upper moving plate 2.

[0063] Further, the conversion part 90 includes a connecting head 901 and a conversion rod 902 which are connected with each other. The connecting head 901 is used for fixedly connecting with the first movable rod 52, and the conversion rod 902 is fixed on the upper moving plate 2 through a nut.

[0064] Further, the conversion rod 902 penetrates the upper moving plate 2, and both ends of the conversion rod 902 extend to both sides of the upper moving plate 2, the upper end of the conversion rod 902 is sleeved with a first locking nut, and the lower end of the conversion rod 902 is sleeved with a second locking nut, the first locking nut and the second locking nut form a pair of top nuts, when the conversion rod 902 is fixed, the first locking nut and the second locking nut abut on the upper and lower sides of the upper moving plate 2, so as to fix the conversion rod 902 and the upper moving plate 2 together, and then fix the first movable rod 52 of the test cylinder 5 and the upper moving plate 2 together, when the thrust test is performed, the first movable rod 52 pushes the upper moving plate 22 to move downward together.

[0065] In one or several embodiments, as shown in Figure 3 The upper moving plate 2 and the lower moving plate 3 are both provided with linear bearings 7, and the slide rods 12 are assembled on the linear bearings 7, wherein the model of the linear bearing 7 can be selected from LM series, LME series, etc., and the specific size is selected according to the actual situation.

[0066] In the embodiment, as shown in Figure 3 The base 1 includes a top plate 11, a bottom plate 13 and four slide rods 12, wherein the slide rods 12 are connected at right angles of the top plate 11 and the bottom plate 13, and the upper moving plate 2 and the lower moving plate 3 are slidingly arranged on the slide rods 12.

[0067] In an optional embodiment, the weight sensor 4 is a spoke type weighing sensor, and the model thereof can be selected from DBSL series, PSD series, LAUMAS series, etc., and the range thereof is preferably 0-300 kg or 0-3 KN.

[0068] In an optional embodiment, in the embodiment, the motor to be tested 10 is a stepping motor.

[0069] Embodiment 2

[0070] As shown in Figure 6 , Figure 7 The thrust test mechanism of the embodiment is different from that of embodiment 1 in that the adjusting device includes a driven cylinder 70, the driven cylinder 70 is connected to the bottom plate 13, and the second movable rod 701 of the driven cylinder 70 is used to be connected to the upper moving plate 2.

[0071] When the interval between the lower moving plate 3 and the bottom plate 13 needs to be adjusted, the driven cylinder 70 is used to drive the lower moving plate 3 to move relative to the bottom plate 13, so as to change the interval therebetween and adjust the initial elastic deformation amount of the spring 6.

[0072] Further, the driven cylinder 70 is used to drive the lower moving plate 3 to move relative to the bottom plate 13 along the length direction of the slide rod 12.

[0073] In an optional embodiment, as shown inFigure 7 As shown, the adjusting device further comprises a second pressing head 60, which is arranged on the side of the lower moving plate 3 away from the weight sensor 4, and the second movable rod 701 is fixedly connected with the second pressing head 60.

[0074] The second pressing head 60 is fixed on the side of the lower moving plate 3 away from the weight sensor 4, the driving cylinder 70 is connected on the bottom plate 13, and the second movable rod 701 of the driving cylinder 70 is fixedly connected with the second pressing head 60.

[0075] By arranging the driving cylinder 70, the interval between the lower moving plate 3 and the bottom plate 13 can be automatically adjusted during the test, and the interval between the lower moving plate 3 and the bottom plate 13 can also be quickly adjusted by the driving cylinder 70, i.e. quickly adjusted to the maximum test thrust, so as to measure the instantaneous data of the motor.

[0076] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A thrust test mechanism, characterized by, The utility model relates to a test device for testing the weight of the object, which comprises: a base (1) comprising a top plate (11) and a bottom plate (13) connected by a slide bar (12); an upper moving plate (2) slidingly arranged on the slide bar (12); a test cylinder (5) connected to the top of the base (1) and used to drive the upper moving plate (2) to move along the length direction of the slide bar (12); a lower moving plate (3) slidingly arranged on the slide bar (12) and located below the upper moving plate (2), the side of the lower moving plate (3) close to the upper moving plate (2) being provided with a weight sensor (4); a spring (6) arranged between the upper moving plate (2) and the lower moving plate (3) and abutting against the upper moving plate (2) and the weight sensor (4) at both ends, respectively; an adjusting device used to adjust the distance between the lower moving plate (3) and the bottom plate (13).

2. A thrust test mechanism according to claim 1, wherein The adjusting device comprises a first pressure head (40) connected to the side of the bottom plate (13) away from the lower moving plate (3), the first pressure head (40) being further provided with an adjusting screw (30) rotatingly arranged thereon, one end of the adjusting screw (30) penetrating through the first pressure head (40) and being bolted to the lower moving plate (3).

3. A thrust test mechanism according to claim 2, wherein A first through hole (401) is arranged at the center of the first pressure head (40), a first threaded hole (31) is arranged at the center of the lower moving plate (3), and the tail of the adjusting screw (30) penetrates through the first through hole (401) and is threadedly connected in the first threaded hole (31).

4. The thrust test mechanism of claim 2, wherein, The adjusting device further comprises a baffle (50) mounted to the side of the first pressure head (40) away from the bottom plate (13) and abutting against the adjusting screw (30).

5. A thrust test mechanism according to claim 4, wherein The baffle (50) is provided with a containing groove (501) in which the head of the adjusting screw (30) is located.

6. A thrust test mechanism according to claim 5, wherein A rotating channel (80) is arranged at the bottom center of the containing groove (501) and penetrates through the baffle (50).

7. The thrust test mechanism of claim 1, wherein, The adjusting device comprises a main drive cylinder (70) connected to the bottom plate (13), the second movable rod (701) of the main drive cylinder (70) being used to be connected with the upper moving plate (2).

8. A thrust test mechanism according to claim 7, wherein The adjusting device further comprises a second pressure head (60) arranged to the side of the lower moving plate (3) away from the weight sensor (4), the second movable rod (701) being fixedly connected with the second pressure head (60).

9. The thrust test mechanism of claim 1, wherein, The utility model further comprises a conversion rod (90) one end of which is connected with the first movable rod (52) of the test cylinder (5) and the other end of which is fixedly connected to the upper moving plate (2).

10. The thrust test mechanism of claim 1, wherein, Linear bearings (7) are arranged on the upper moving plate (2) and the lower moving plate (3), and the slide rod (12) is assembled on the linear bearings (7).

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