A motor torque testing device for a powder tray assembly

Abstract

The present disclosure provides a motor torque test device for a powder tray assembly, comprising: a box; a product placement block, fixedly arranged at the bottom of the box, for placing the powder tray assembly, and allowing the spiral head of the motor to be tested in the powder tray assembly to be arranged upward; a push rod, which is liftably arranged above the spiral head of the motor to be tested, for transmitting the rotational upward force of the spiral head; a detection cylinder, which is arranged above the push rod, for applying a downward pressure of a set size to the push rod; and a laser sensor, which is fixedly arranged at the top of the box, and the optical path is directly opposite to the detection cylinder, for measuring the position change of the detection cylinder along the height direction. The embodiments of the present disclosure can overcome the problem that it is difficult to set up a motor torque tester in the powder tray assembly, improve the positioning accuracy during the detection process, reasonably avoid other structures in the powder tray assembly, and improve the accuracy of the motor torque test and the timeliness and synchronization of the detection data.

Description

Technical Field

[0001] The invention relates to the field of manufacturing and processing of household appliances, and in particular to a motor torque testing device for a powder tray assembly. Background Art

[0002] In the field of household appliance manufacturing and processing, with the continuous improvement of intelligence and automation, the application of motors is becoming more and more extensive. For example, the swinging action of various swinging parts, the rotation action of various rotating parts, the opening and closing action of various doors, the lifting and lowering action of various trays, etc. can all be driven by motors. Among the various tests of motors, torque is an important parameter in motor evaluation, and the accuracy of its test is related to whether the motor can be used normally.

[0003] In the field of kitchen appliances, the powder tray assembly is a device used to mix fixed powders such as flour and rice flour with liquid substances such as oil and water. It is widely used in automatic dough mixers, automatic pancake machines and other equipment. In the process of mixing fixed powders and liquid substances in the powder tray assembly, it is necessary to accurately control the amount of raw materials fed and the mixing and stirring rate, which depends on the powder tray drive motor and the stirring drive motor to accurately drive the corresponding transmission structure with their respective set torques. Therefore, it is very necessary to perform torque detection on the powder tray drive motor and the stirring drive motor in the powder tray assembly before leaving the factory.

[0004] However, the related motor torque tester has a single structure and is difficult to match with the motor in the powder tray assembly, so it cannot meet the torque test requirements of the motor in the dispensing assembly. If a simple torque tester is used for measurement, no specific measurement data will be displayed, which will reduce the detection accuracy on the one hand and affect the test efficiency on the other hand due to the difficulty in operation. Summary of the invention

[0005] In view of this, the embodiments of the present disclosure provide a motor torque testing device for a powder tray assembly, which can overcome the problem that it is difficult to set up a motor torque tester in the powder tray assembly, improve the positioning accuracy during the detection process, reasonably avoid other structures in the powder tray assembly, and improve the accuracy of the motor torque test and the timeliness and synchronization of the detection data.

[0006] In one aspect of the present disclosure, a motor torque testing device for a powder tray assembly is provided, comprising:

[0007] Box;

[0008] A product placement block is fixedly arranged at the bottom of the box body and is used to place the powder tray assembly, and the spiral head of the motor to be tested in the powder tray assembly is arranged upward;

[0009] A push rod, which is escalably disposed above the screw head of the motor to be tested and is used to transmit the rotational lifting force of the screw head;

[0010] A detection cylinder is disposed above the push rod and is used to apply a downward pressure of a set magnitude to the push rod; and

[0011] The laser sensor is fixedly arranged on the top of the box body, with the optical path facing the detection cylinder, and is used to measure the position change of the detection cylinder along the height direction.

[0012] In some embodiments, the cylinder rod of the detection cylinder is threadedly fastened to the push rod, and the motor torque testing device further includes:

[0013] A positioning assembly is telescopically connected to the push rod, fixedly connected to the cylinder barrel of the detection cylinder, and movably arranged inside the box body so that the lower end of the push rod is positioned above the screw head along the height direction and the front-rear direction.

[0014] In some embodiments, the positioning assembly includes:

[0015] Base plate;

[0016] a sliding plate, which is slidably disposed above the bottom plate in a front-to-rear direction and is provided with a first through hole for passing the top rod; and

[0017] The first fixing frame is fixedly arranged above the sliding plate and is used for fixing the cylinder barrel of the detection cylinder and making the vertical projection of the cylinder rod of the detection cylinder on the sliding plate overlap with the first through hole.

[0018] In some embodiments, the positioning component further comprises:

[0019] A track plate, fixedly arranged above the bottom plate, with a first slide rail arranged along the front-rear direction on the upper surface thereof, for being slidably connected to the slide plate;

[0020] A second fixing frame is vertically arranged upward at the rear of the track plate and is provided with a second through hole; and

[0021] A propulsion cylinder, a cylinder barrel of which is fixedly arranged on the second fixing frame, a cylinder rod of which passes through the second through hole and is connected to the first fixing frame, is used for driving the sliding plate to slide forward and backward relative to the track plate.

[0022] In some embodiments, a recessed portion is provided on the front side of the bottom plate for accommodating the push rod when the sliding plate slides to the rearmost end along the first slide rail.

[0023] In some embodiments, the positioning component further comprises:

[0024] A top plate, fixedly disposed above the bottom plate and the detection cylinder via a column; and

[0025] A downward pressure cylinder, a cylinder barrel of which is fixedly arranged on the top of the box body, a cylinder rod of which passes through the top of the box body and is connected to the top plate, and is used for driving the top plate to slide up and down relative to the top of the box body.

[0026] In some embodiments, the positioning component further comprises:

[0027] A second slide rail is fixedly disposed on the left and right sides of the interior of the box along the height direction; and

[0028] The sliding block is fixedly arranged on the left and right sides of the bottom plate and is slidably matched with the second sliding rail.

[0029] In some embodiments, the motor torque testing device further includes:

[0030] a first air pressure regulating valve, the air circuit of which is connected to the detection cylinder, the propulsion cylinder and the downward pressure cylinder, and is used to adjust the air supply pressure from the pressure air source; and

[0031] The second air pressure regulating valve is disposed between the first air pressure regulating valve and the detection cylinder, and is configured to control the timing and pressure of air supply to the detection cylinder.

[0032] In some embodiments, the motor torque testing device further includes:

[0033] an electrical control box, which is communicatively connected to the laser sensor, the first air pressure regulating valve and the second air pressure regulating valve, and is configured to: after the powder tray assembly is placed on the product placement block, in response to a start signal, control the first air pressure regulating valve to open, so that the positioning assembly, driven by the thrust cylinder and the downward pressure cylinder, positions the push rod above the screw head of the motor to be tested in the front-to-back direction and the height direction, then control the second air pressure regulating valve to open, so that the detection cylinder applies a set downward pressure to the push rod, and finally detects the position change of the detection cylinder in the height direction through the laser sensor, thereby testing the torque of the motor to be tested; and

[0034] A human-machine interface is communicatively connected to the electrical control box and is used to display the torque test result of the motor to be tested.

[0035] In some embodiments, the powder tray assembly includes two motors to be tested, and the number of the push rod, the detection cylinder and the laser sensor are two each, so as to perform torque tests on the two motors to be tested respectively.

[0036] Therefore, according to the embodiment of the present disclosure, the rotational upward force of the spiral head of the motor to be tested is utilized to detect the displacement of the cylinder in the height direction as an intermediate parameter for torque testing, thereby overcoming the problem that it is difficult to set up a motor torque tester in the powder tray assembly; the positioning assembly is used to position the lower end of the push rod along the height direction and the front-to-back direction relative to the spiral head, thereby improving the positioning accuracy during the detection process and reasonably avoiding other structures in the powder tray assembly; the laser sensor is used to accurately measure the position of the detection cylinder, thereby improving the accuracy of the motor torque test, and improving the timeliness and synchronization of the detection data. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are used to provide further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0038] Figure 1 It is a structural schematic diagram of a motor torque testing device of a powder tray assembly in some embodiments of the present disclosure;

[0039] Figure 2 A schematic structural diagram showing a portion of the combination of a motor to be tested and a push rod in a motor torque testing device of a powder tray assembly in some embodiments of the present disclosure;

[0040] Figure 3 Schematic diagram of the structure of the positioning assembly in the motor torque testing device of the powder tray assembly in some embodiments of the present disclosure.

[0041] Description of reference numerals:

[0042] 1-Box 2-Product placement block 3-Powder tray assembly

[0043] 31-motor to be tested 32-screw head 4-rod

[0044] 5-Detection cylinder 6-Laser sensor 7-Positioning component

[0045] 71- bottom plate 711- recessed portion 72- sliding plate

[0046] 721- first through hole 73- first fixing frame 74- track plate

[0047] 741-first slide rail 75-second fixing bracket 751-second through hole

[0048] 76- push cylinder 77- top plate 78- press cylinder

[0049] 79- second slide rail 710- slide block 81- first air pressure regulating valve

[0050] 82- Second air pressure regulating valve 91- Electrical control box 92- Human-machine interface

[0051] 921-mounting frame 93-first indicator light 94-second indicator light

[0052] 95- Third indicator light 96- Fourth indicator light 97- Emergency stop button

[0053] 98-foot pad 99-power cord interface 910-handle

[0054] 911-Solenoid valve DETAILED DESCRIPTION

[0055] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0056] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0057] In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other device without an intermediate device, or may not be directly connected to the other device but have an intermediate device.

[0058] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0059] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0060] like Figures 1 to 3 As shown:

[0061] In one aspect of the present disclosure, a motor torque test device for a powder tray assembly is provided, comprising a box 1, a product placement block 2, a push rod 4, a detection cylinder 5, and a laser sensor 6. The product placement block 2 is fixedly arranged at the bottom of the box 1, and is used to place the powder tray assembly 3, and to make the spiral head of the motor to be tested 31 in the powder tray assembly 3 face upward; the push rod 4 is arranged to be raised and lowered above the spiral head 32 of the motor to be tested, and is used to transmit the rotational upward force of the spiral head; the detection cylinder 5 is arranged above the push rod 4, and is used to apply a set downward pressure to the push rod 4; and the laser sensor 6 is fixedly arranged at the top of the box 1, and the optical path is directly opposite to the detection cylinder 5, and is used to measure the position change of the detection cylinder 5 along the height direction.

[0062] The disclosed embodiment utilizes the rotational lifting force of the spiral head of the motor 31 to be tested to convert the measurement of the motor torque into the measurement of the rising distance of the motor spiral head, and uses the displacement of the detection cylinder 5 along the height direction as an intermediate parameter for measurement. Thus, while ensuring that the motor torque test accuracy meets the requirements, other structures in the powder tray assembly 3 are reasonably avoided, and measurement is performed from above the motor 31 to be tested through the push rod 4.

[0063] Considering that the connection between the spiral head of the motor 31 to be tested and the push rod 4 is difficult to be fixedly connected, the embodiment of the present disclosure further presses the push rod 4 to the spiral head of the motor 31 to be tested by the detection cylinder 5, and controls the pressing force of the detection cylinder 5 to be a set force, so as to improve the connection tightness between the two. Therefore, along the height direction, the spiral head of the motor 31 to be tested can only lift the detection cylinder 5 when its own rotational lifting force is greater than the set pressing force of the detection cylinder 5. Based on this principle, the tester can set the pressing force of the detection cylinder 5 to be equal to the rotational lifting force of the spiral head when the torque of the motor 31 to be tested is qualified, thereby judging whether the torque of the motor 31 to be tested is qualified by measuring whether the detection cylinder 5 is lifted and the position change in the height direction occurs.

[0064] Considering that the position change of the detection cylinder 5 in the height direction may be relatively small, the embodiment of the present disclosure uses the laser sensor 6 to measure the position change of the detection cylinder 5 in the height direction, so as to more accurately and timely capture any small position change of the detection cylinder 5. In addition, considering that the greater the torque of the motor 31 to be tested, the greater the rotational lifting force of its spiral head, when the detection cylinder 5 is lifted, the greater the position change of the detection cylinder 5 in the height direction, so the laser sensor 6 can measure the position change of the detection cylinder 5 in the height direction in real time, and characterize the torque of the motor 31 to be tested by its position peak value in the height direction.

[0065] The principle that the spiral head of the motor 31 to be tested can generate a rotational lifting force is explained as follows: during the rotation of the spiral structure, its spiral surface, as an inclined surface, can actually continuously push the object in contact with it to move along the axial direction of the spiral structure. This is also the reason why the thread can drill in or out of the threaded hole along the axial direction as it rotates, and it is also the reason why the nut moves along the length direction of the screw when it rotates on the screw. Another typical structure is the structure of the cap part of a push-type ballpoint pen, which is similar to the spiral structure and can also convert rotational motion into vertical motion. The matching relationship between the spiral head and the push rod in the embodiment of the present disclosure is similar. As the spiral head rotates, its spiral lifting force will act on the length direction of the push rod, thereby lifting the detection motor through the push rod.

[0066] However, it should be noted that the rotational lifting force of the spiral structure has its upper and lower dead points. When the object being pushed exceeds the upper dead point or the lower dead point, the spiral structure is no longer in contact with the object being pushed and can no longer generate a driving force. Therefore, in the present disclosure, the contact position between the push rod 4 and the spiral head 32 of the motor to be tested needs to not exceed the upper dead point position of the spiral head 32 to push the object upward.

[0067] In some embodiments, considering that the push rod 4 is used to transmit the force between the motor 31 to be tested and the detection cylinder 5, in the relationship between the three results connected in pairs, the cylinder rod of the detection cylinder 5 and the push rod 4 are fastened by threads, and the push rod 4 and the spiral head of the motor 31 to be tested can only abut each other, and considering that the motor 31 to be tested is deeply buried inside the powder tray assembly 3, the setting direction of the push rod 4 and its positioning process have higher requirements. In view of this, the motor torque test device also includes a positioning assembly 7, which is telescopically connected to the push rod 4, fixedly connected to the cylinder barrel of the detection cylinder 5, and movably arranged inside the box body 1, so that the lower end of the push rod 4 is positioned above the spiral head 32 in the height direction and the front-to-back direction.

[0068] Specifically, in some embodiments, the positioning assembly 7 includes a bottom plate 71, a sliding plate 72 and a first fixing frame 73. The sliding plate 72 is slidably arranged above the bottom plate 71 along the front-back direction, and is provided with a first through hole 721 for passing the push rod 4; and the first fixing frame 73 is fixedly arranged above the sliding plate 72, and is used to fix the cylinder barrel of the detection cylinder 5, and make the vertical projection of the cylinder rod of the detection cylinder 5 on the sliding plate 72 coincide with the first through hole 721. Thus, the positioning assembly 7 realizes the matching of the relative positions between the push rod 4 and the detection cylinder 5, and provides a limiting structure composed of the first through hole 721 and the first fixing frame 73 for the threaded fastening connection between the two.

[0069] Furthermore, in order to enable the push rod 4 to match the position of the screw head 32 of the motor to be tested along the front-to-back direction, in some embodiments, the positioning assembly 7 further includes a track plate 74, a second fixing frame 75 and a propulsion cylinder 76. The track plate 74 is fixedly arranged above the bottom plate 71, and a first slide rail 741 arranged along the front-to-back direction is provided on the upper surface for slidably connecting with the sliding plate 72; the second fixing frame 75 is vertically arranged upward at the rear of the track plate 74, and a second through hole 751 is provided; and the propulsion cylinder 76 fixes its own cylinder barrel to the second fixing frame 75, and the cylinder rod passes through the second through hole 751 and is connected to the first fixing frame 73, so as to drive the sliding plate 72 to slide forward and backward relative to the track plate 74.

[0070] During the process of position matching the push rod 4 with the spiral head 32 of the motor to be tested along the front-to-back direction, considering the position interference between the bottom plate 71 and the push rod 4, in some embodiments, a recessed portion 711 is provided on the front side of the bottom plate 71 for accommodating the push rod 4 when the sliding plate 72 slides to the rear end along the first slide rail 741.

[0071] Similarly, in order to enable the push rod 4 to match the position of the screw head 32 of the motor to be tested along the height direction, in some embodiments, the positioning assembly 7 further includes a top plate 77 and a downward pressure cylinder 78. The top plate 77 is fixedly arranged above the bottom plate 71 and the detection cylinder 5 through a column; and the downward pressure cylinder 78 fixes its cylinder barrel to the top of the box body 1, passes the cylinder rod through the top of the box body 1 and is connected to the top plate 77, so that the top plate 77 can be driven to slide up and down relative to the top of the box body 1.

[0072] In the process of matching the position of the push rod 4 with the screw head 32 of the motor to be tested along the height direction, in order to provide position limiting and guidance for the downward pressing process of the push rod 4, in some embodiments, the positioning assembly 7 further includes a second slide rail 79 and a slider 710. The second slide rail 79 is fixedly arranged on the left and right sides of the box body 1 along the height direction; the slider 710 is fixedly arranged on the left and right sides of the bottom plate 71 and slidably cooperates with the second slide rail 79.

[0073] Furthermore, in order to control the air supply and pressure of the detection cylinder 5, the propulsion cylinder 76 and the downward pressure cylinder 78, in some embodiments, the motor torque test device further includes a first air pressure regulating valve 81 and a second air pressure regulating valve 82. The first air pressure regulating valve 81 is connected to the detection cylinder 5, the propulsion cylinder 76 and the downward pressure cylinder 78, and is used to adjust the air supply pressure from the pressure air source; and the second air pressure regulating valve 82 is arranged between the first air pressure regulating valve 81 and the detection cylinder 5, and is configured to control the timing and pressure of air supply to the detection cylinder 5.

[0074] Furthermore, in order to improve the degree of automation and intelligence, in some embodiments, the motor torque test device further includes an electrical control box 91 and a human-machine interface 92. The electrical control box 91 is communicatively connected to the laser sensor 6, the first air pressure regulating valve 81 and the second air pressure regulating valve 82, and is configured as follows: after the powder tray assembly 3 is placed on the product placement block 2, in response to the start signal, the first air pressure regulating valve 81 is controlled to open, so that the positioning assembly 7 is driven by the thrust cylinder 76 and the downward pressure cylinder 78 to position the push rod 4 above the spiral head 32 of the motor to be tested in the front-to-back direction and the height direction, and then the second air pressure regulating valve 82 is controlled to open, so that the detection cylinder 5 applies a set downward pressure to the push rod 4, and finally the position change of the detection cylinder 5 in the height direction is detected by the laser sensor 6, so as to test the torque of the motor 31 to be tested; and the human-machine interface 92 is communicatively connected to the electrical control box 91, and is fixedly arranged on the electrical control box 91 through the mounting bracket 921, so as to display the torque test result of the motor 31 to be tested.

[0075] In addition, considering that the powder tray assembly 3 is provided with two motors: a powder tray drive motor and a stirring drive motor, the number of the push rod 4, the detection cylinder 5 and the laser sensor 6 in the embodiment of the present disclosure is two, so as to perform torque tests on the two motors 31 to be tested respectively.

[0076] In order to make the test structure of the motor torque more intuitive, a first indicator light 93, a second indicator light 94, a third indicator light 95 and a fourth indicator light 96 connected to the electronic control component signal are respectively provided. The first indicator light 93 and the second indicator light 94 are used to display whether the torque of the motor 31 to be tested on the left side is normal, and correspondingly, the third indicator light 95 and the fourth indicator light 96 are used to display whether the torque of the motor 31 to be tested on the right side is normal.

[0077] Furthermore, the box body 1 provided in the embodiment of the present disclosure is also provided with an emergency stop button 97, a power line interface 99 and a solenoid valve assembly 911. The emergency stop button 97 is used to control the detection cylinder 5, the thrust cylinder 76 and the pressing cylinder 78 to stop the action through the electric control assembly, so as to interrupt the detection process in an emergency and prevent the occurrence of dangerous situations. The solenoid valve assembly 911 is used to control the action of each cylinder. The power line interface 99 is used to supply power to the electric control assembly and each cylinder.

[0078] In addition, the box body 1 provided in the embodiment of the present disclosure is also provided with a handle 910 and a foot pad 98. The handle 910 can facilitate the operator to grasp and adjust the position of the box body 1, while the foot pad 98 can adjust the connection line of the motor to be tested 31, the push rod 4, the detection cylinder 5 and the laser sensor 6 in the vertical direction, thereby further reducing the measurement error.

[0079] Therefore, according to the embodiment of the present disclosure, the rotational upward force of the spiral head of the motor 31 to be tested is utilized to detect the displacement of the cylinder 5 in the height direction as an intermediate parameter for torque testing, thereby overcoming the problem that it is difficult to set up a motor torque tester in the powder tray assembly 3; the positioning assembly 7 is used to position the lower end of the push rod 4 along the height direction and the front-to-back direction with the spiral head 32, thereby improving the positioning accuracy during the detection process and reasonably avoiding other structures in the powder tray assembly 3; the laser sensor 6 is used to accurately measure the position of the detection cylinder 5, thereby improving the accuracy of the motor torque test, and improving the timeliness and synchronization of the detection data.

[0080] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0081] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A motor torque test device for a powder tray assembly, characterized in that: include: Box body (1); A product placement block (2) is fixedly arranged at the bottom of the box (1) and is used to place a powder tray assembly (3), and to arrange the spiral head of the motor (31) to be tested in the powder tray assembly (3) upward; A push rod (4) is movably disposed above the spiral head (32) of the motor to be tested and is used to transmit the rotational lifting force of the spiral head (32); A detection cylinder (5) is arranged above the push rod (4) and is used to apply a downward pressure of a set magnitude to the push rod (4); as well as A laser sensor (6) is fixedly arranged on the top of the box (1) with its optical path facing the detection cylinder (5) and is used to measure the position change of the detection cylinder (5) in the height direction. The cylinder rod of the detection cylinder is threadedly connected to the push rod (4), and the motor torque testing device further comprises: A positioning assembly (7) is telescopically connected to the push rod (4), fixedly connected to the cylinder barrel of the detection cylinder (5), and movably arranged inside the box body (1) so that the lower end of the push rod (4) is positioned above the screw head (32) along the height direction and the front-back direction.

2. The motor torque testing device according to claim 1, characterized in that: The positioning component (7) comprises: Bottom plate (71); A sliding plate (72) is slidably disposed above the bottom plate (71) in a front-to-rear direction and is provided with a first through hole (721) for passing the top rod (4); and The first fixing frame (73) is fixedly arranged above the sliding plate (72) and is used to fix the cylinder barrel of the detection cylinder (5) and make the vertical projection of the cylinder rod of the detection cylinder (5) on the sliding plate (72) overlap with the first through hole (721).

3. The motor torque testing device according to claim 2, characterized in that: The positioning component (7) also includes: A track plate (74) is fixedly arranged above the bottom plate (71), and has an upper surface provided with a first slide rail (741) arranged in a front-to-rear direction, and is used for being slidably connected to the slide plate (72); A second fixing frame (75) is vertically arranged upward behind the track plate (74) and is provided with a second through hole (751); and A propulsion cylinder (76), the cylinder barrel of which is fixedly arranged on the second fixing frame (75), and the cylinder rod of which passes through the second through hole (751) and is connected to the first fixing frame (73), is used to drive the sliding plate (72) to slide forward and backward relative to the track plate (74).

4. The motor torque testing device according to claim 3, characterized in that: The front side of the bottom plate (71) is provided with a recessed portion (711) for accommodating the top rod (4) when the sliding plate (72) slides to the rearmost end along the first sliding rail (741).

5. The motor torque testing device according to claim 4, characterized in that: The positioning component (7) also includes: A top plate (77) is fixedly disposed above the bottom plate (71) and the detection cylinder (5) via a column; and A downward pressure cylinder (78) has a cylinder barrel fixedly arranged on the top of the box body (1), and a cylinder rod passing through the top of the box body (1) and connected to the top plate (77), and is used to drive the top plate (77) to slide up and down relative to the top of the box body (1).

6. The motor torque testing device according to claim 5, characterized in that: The positioning component (7) also includes: A second slide rail (79) is fixedly arranged on the left and right sides of the interior of the box (1) along the height direction; and The sliding block (710) is fixedly arranged on the left and right sides of the bottom plate (71) and is slidably matched with the second sliding rail (79).

7. The motor torque testing device according to claim 5, characterized in that: Also includes: A first air pressure regulating valve (81), the air path of which is connected to the detection cylinder (5), the propulsion cylinder (76) and the downward pressure cylinder (78), and is used to adjust the air supply pressure from the pressure air source; as well as The second air pressure regulating valve (82) is arranged between the first air pressure regulating valve (81) and the detection cylinder (5), and is configured to control the timing and pressure of air supply to the detection cylinder (5).

8. The motor torque testing device according to claim 7, characterized in that: Also includes: an electrical control box (91) which is communicatively connected to the laser sensor (6), the first air pressure regulating valve (81) and the second air pressure regulating valve (82) and is configured to: after the powder tray assembly (3) is placed on the product placement block (2), in response to a start signal, control the first air pressure regulating valve (81) to open, so that the positioning assembly (7) is driven by the thrust cylinder (76) and the downward pressure cylinder (78) to position the push rod (4) above the screw head (32) of the motor to be tested in the front-to-back direction and the height direction, then control the second air pressure regulating valve (82) to open, so that the detection cylinder (5) applies a set downward pressure to the push rod (4), and finally detects the position change of the detection cylinder (5) in the height direction through the laser sensor (6), thereby testing the torque of the motor to be tested (31); and A human-machine interface (92) is communicatively connected to the electrical control box (91) and is used to display the torque test result of the motor to be tested (31).

9. The motor torque testing device according to claim 1, characterized in that: The powder tray assembly (3) comprises two motors to be tested (31), and the number of the push rod (4), the detection cylinder (5) and the laser sensor (6) are all two, so as to perform torque tests on the two motors to be tested (31) respectively.

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