A brushless motor load detection device

Abstract

The present invention discloses a brushless motor load detection device, which specifically relates to the technical field of brushless motor load testing equipment, including a workbench, a controller is provided on the right rear portion of the upper end of the workbench, a load component is provided on the right side of the upper end of the reinforcing plate, a sliding group is provided in the middle of the upper end of the reinforcing plate, a mounting mechanism is provided on the upper part of the sliding group, a pushing group is provided on the left side of the sliding group and the left side of the upper end of the reinforcing plate, and a wiring group is provided on the front left side of the upper end of the workbench. The brushless motor load detection device described in the present invention can clamp and fix different types of brushless motors through the clamping mechanism in the mounting mechanism. With the coordinated use of a U-shaped bracket, a hydraulic cylinder, a support column and a fixing plate, the axes of different brushless motors installed on the clamping mechanism can be the same as the axis of the load component, which is convenient for the connection between the brushless motor and the load component and the subsequent load detection, thereby expanding the detection range of the device for brushless motor types.

Description

Technical Field

[0001] The invention relates to the technical field of brushless motor load testing equipment, and in particular to a brushless motor load detection device. Background Art

[0002] The brushless DC motor is mainly composed of an electronic switching circuit, a permanent magnet synchronous motor, and a position sensor. When one phase of the stator winding is energized, the current interacts with the magnetic field generated by the rotor poles to generate torque, driving the rotor to rotate. With the development of electronic technology and control theory, brushless DC motors have gradually improved and are widely used in various fields. Motor load testing equipment is one of the important means to evaluate motor performance. By simulating the load conditions of the actual working state of the motor, the performance of the motor can be comprehensively and accurately tested and evaluated. This helps to ensure that the motor can operate stably under various working conditions and meet the design requirements. At the same time, the motor load testing equipment can also provide strong support for the design optimization and fault diagnosis of the motor. Therefore, a brushless motor load detection device is needed.

[0003] Chinese patent announcement number CN218383208U discloses a brushless motor load test device, including a support test base and a load-bearing wheel, the top surface of the support test base is provided with a positioning adjustment groove, and a limit shaft is installed inside the positioning adjustment groove, and the limit shaft is connected to the support test base, the limit shaft passes through the connecting block, and the connecting block is located inside the positioning adjustment groove, and a support plate is installed on the top surface of the connecting block, and a support positioning frame is installed on the top surface of the support test base, and a limit groove is provided on the support positioning frame, and a support ball is installed inside the limit groove, and a fixed shaft is installed through the center of the support ball. The above-mentioned brushless motor load test device can slide and shift the support column on the load-bearing wheel by pulling the support column, so as to facilitate the control of the number of load-bearing wheels to be loaded later, thereby adjusting the load support of the subsequent brushless motor shaft; however, the following defects still exist during implementation:

[0004] In the implementation of the above patent document, although the load of the brushless motor is tested, there is a problem that the device can only detect one type of brushless motor, and the type of brushless motor to be detected is too single, and the use of the device is limited. Summary of the invention

[0005] The main purpose of the present invention is to provide a brushless motor load detection device, which can effectively solve the problem that the device can only detect one type of brushless motor and the type of brushless motor detected is too single.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is:

[0007] A brushless motor load detection device comprises a workbench, a controller is provided at the right rear part of the upper end of the workbench, a reinforcement plate is provided at the middle part of the upper end of the workbench, a load component is provided at the right side of the upper end of the reinforcement plate, a sliding group is provided at the middle part of the upper end of the reinforcement plate, a mounting mechanism is provided at the upper part of the sliding group, a pushing group is provided on the left side of the sliding group and the left side of the upper end of the reinforcement plate, a wiring group is provided at the front part of the left side of the upper end of the workbench, and an induction component is provided on the left side of the load component.

[0008] Preferably, the mounting mechanism comprises a hydraulic cylinder, a fixing plate is provided at the output end of the hydraulic cylinder, four supporting columns are provided in a rectangular array at the lower end of the fixing plate, a U-shaped bracket is provided on the outside of the four supporting columns, and a clamping mechanism is provided at the upper end of the fixing plate.

[0009] Preferably, the clamping mechanism includes a second shaking component, a positioning group and an L-shaped clamping plate are respectively provided on the front and rear sides of the outer surface of the second shaking component, the positioning group is symmetrically provided with round rods on the rear side in the horizontal direction, and the L-shaped clamping plate is symmetrically provided with rod sleeves on the front end in the horizontal direction, the outer surfaces of the two round rods are respectively slidably connected with the inner cavities of the two rod sleeves, the lower side of the outer surface of the positioning group and the lower side of the outer surface of the L-shaped clamping plate are jointly provided with a through groove bottom plate, a plurality of mounting holes are opened on the upper end of the through groove bottom plate, springs are provided on the bottom walls of the inner cavities of the plurality of mounting holes, and top columns are provided on the upper ends of the plurality of springs.

[0010] Preferably, the lower end of the through-groove bottom plate is fixedly connected to the upper end of the fixed plate, and the outer surfaces of the plurality of top columns are slidably connected to the inner cavities of the plurality of mounting holes respectively.

[0011] Preferably, the positioning group includes an L-shaped clamping plate 2, a threaded hole 2 is provided on the lower side of the middle part of the front end of the L-shaped clamping plate 2, the inner cavity of the threaded hole 2 is meshingly connected with the front side of the outer surface of the second shaking component, a limiting groove is provided on the front side of the right end of the second L-shaped clamping plate, a threaded rod is provided in the inner cavity of the limiting groove, a rotating block is provided on the upper side of the outer surface of the threaded rod, a positioning component is provided on the outer surface of the threaded rod, and the upper end of the threaded rod passes through the top wall of the inner cavity of the limiting groove and is fixedly connected with a knob.

[0012] Preferably, the lower rear part of the second outer surface of the L-shaped clamp is slidably connected to the front side of the inner cavity of the through groove bottom plate, the outer surface of the rotating block is rotatably connected to the upper side of the inner cavity of the limiting groove, and the left side of the outer surface of the positioning component is slidably connected to the inner cavity of the limiting groove.

[0013] Preferably, the sliding group includes a concave plate, an upper end of the concave plate is symmetrically provided with an L-shaped slide groove, a plurality of rotating rollers are provided in the inner cavity of the concave plate, two L-shaped slide grooves are respectively provided with L-shaped slide plates, and a connecting plate is commonly provided at the upper ends of the two L-shaped slide plates, a mounting groove is provided in the middle of the upper end of the connecting plate, the bottom wall of the mounting groove inner cavity is fixedly connected to the lower end of the hydraulic cylinder, the upper end of the connecting plate is fixedly connected to the lower end of the U-shaped bracket, a sensor 2 is provided in the middle of the front end of the connecting plate, and the lower end of the connecting plate is in contact with the upper side of the outer surfaces of the plurality of rotating rollers.

[0014] Preferably, the pushing group includes a supporting plate fixedly connected to the left side of the upper end of the reinforcing plate, a threaded hole is provided in the middle of the left end of the supporting plate, a rocking component is meshedly connected to the inner cavity of the threaded hole, a rotating seat is provided on the right side of the outer surface of the rocking component, and the lower end of the rotating seat is fixedly connected to the left side of the upper end of the connecting plate.

[0015] Preferably, the wiring group includes a shell fixedly connected to the front left side of the upper end of the workbench, a fixed splint is provided on the front side of the inner cavity of the shell, a movable splint is provided on the rear side of the inner cavity of the shell, a propeller is provided at the rear end of the shell, the output end of the propeller passes through the middle of the rear end of the shell and is fixedly connected to the movable splint, and a sensor 1 is provided in the middle of the rear end of the propeller.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention comprises a reinforcing plate, a load component, a wiring group, a pushing group, a sliding group, a mounting mechanism, a sensing component and a controller. Different types of brushless motors are clamped and fixed by a clamping mechanism in the mounting mechanism. With the coordinated use of a U-shaped bracket, a hydraulic cylinder, a support column and a fixing plate, the axes of different brushless motors mounted on the clamping mechanism can be the same as the axis of the load component, which is convenient for connecting the output end of the brushless motor with the load component and for subsequent device load detection of different types of brushless motors, thereby expanding the detection range of the device for brushless motor types.

[0018] 2. In the specific use of the present invention, the push group drives the sensor 2 on the connecting plate to move left and right. With the cooperation of the sensor 1, the pusher drives the movable clamping plate to move back and forth in the inner cavity of the shell, and the brushless motor wire placed between the fixed clamping plate and the movable clamping plate is clamped or automatically disconnected. There is no need to consider the problem of inconvenience in connecting or disconnecting the power supply due to different wires on different types of brushless motors, which is convenient for replacement of different types of brushless motors during load detection, making the device more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of another viewing angle of the overall structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the installation mechanism of the present invention;

[0022] Figure 4 It is a schematic diagram of the clamping mechanism of the present invention;

[0023] Figure 5 It is a schematic diagram of the clamping mechanism of the present invention from another perspective;

[0024] Figure 6 It is a schematic diagram of the positioning group of the present invention;

[0025] Figure 7 It is a schematic diagram of the sliding group of the present invention;

[0026] Figure 8 It is a schematic diagram of the propulsion group of the present invention;

[0027] Fig. 9 It is a schematic diagram of a wiring assembly of the present invention;

[0028] Fig.10 It is a schematic diagram of the wiring assembly of the present invention from another perspective.

[0029] In the figure: 1, workbench; 2, reinforcing plate; 3, load component; 4, wiring group; 41, housing; 42, fixed clamping plate; 43, movable clamping plate; 44, thruster; 45, sensor 1; 5, pushing group; 51, support plate; 52, threaded hole 1; 53, shaking component 1; 54, rotating seat; 6, sliding group; 61, concave plate; 62, L-shaped slide plate; 63, L-shaped slide groove; 64, rotating roller; 65, connecting plate; 66, mounting groove; 67, sensor 2; 7, mounting mechanism; 71, U-shaped bracket; 72, Hydraulic cylinder; 73, support column; 74, fixing plate; 75, clamping mechanism; 751, through-groove bottom plate; 752, mounting hole; 753, spring; 754, top column; 755, L-shaped clamping plate 1; 756, rod sleeve; 757, round rod; 758, positioning group; 7581, L-shaped clamping plate 2; 7582, limiting groove; 7583, threaded hole 2; 7584, threaded rod; 7585, rotating block; 7586, knob; 7587, positioning component; 759, shaking component 2; 8, sensing component; 9, controller. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] Embodiment 1, as Figure 1-2As shown, a brushless motor load detection device comprises a workbench 1, a controller 9 is provided at the right rear portion of the upper end of the workbench 1, a reinforcing plate 2 is provided at the middle portion of the upper end of the workbench 1, a load component 3 is provided at the right upper end of the reinforcing plate 2, a sliding group 6 is provided at the middle portion of the upper end of the reinforcing plate 2, a mounting mechanism 7 is provided at the upper portion of the sliding group 6, a pushing group 5 is provided on the left side of the sliding group 6 and the left side of the upper end of the reinforcing plate 2, a wiring group 4 is provided at the front portion of the left upper end of the workbench 1, and a sensing component 8 is provided on the left side of the load component 3.

[0032] It should be noted that the specific installation methods of the load component 3, the sensing component 8 and the controller 9 in the present invention, the circuit connection method and the control method are all conventional designs, which are conventional design means of designers. The load component 3 includes a load motor, a coupling, a power load, a control system and a data acquisition system, etc., the controller 9 includes a display, a data processing system and a control center, etc., and the sensing component 8 includes a torque and speed sensor, etc. It is only necessary for the controller 9 to control the load component 3 and the sensing component 8, and with the coordinated use of the wiring group 4, the pushing group 5, the sliding group 6 and the installation mechanism 7, to realize the relevant tests such as the load test, efficiency test, torque / speed characteristic test, overload test and steering test of the brushless motor.

[0033] First, the brushless motor to be tested is installed through the installation mechanism 7, and the installation mechanism 7 is adjusted to make the axis of the brushless motor consistent with the axis of the load component 3. Then, the coupling in the load component 3 is adjusted, and the wire of the brushless motor is placed in the wiring group 4. Then, the push group 5 is adjusted to make the push group 5 drive the sliding group 6 to operate. The brushless motor on the installation mechanism 7 is driven by the sliding group 6 to move left and right to a suitable position, so that the brushless motor is connected to the coupling in the load component 3. Then, the induction component 8 is adjusted to make the induction component 8 adhere to the outer surface of the coupling. At the same time, when the sliding group 6 is in operation, The wiring group 4 clamps the wires of the brushless motor, connects the power supply, and finally starts the controller 9. The controller 9 controls the load component 3 and the induction component 8 to perform load detection on the brushless motor, and the detected data is displayed by the controller 9, so that the entire device can detect brushless motors of different models. After the detection is completed, the controller 9 controls the device to stop detecting, adjusts the load component 3, the pushing group 5 and the installation mechanism 7, takes out the brushless motor that has been detected, and the wires connected in the wiring group 4 are automatically loosened, and the next brushless motor to be tested is replaced, thereby realizing the detection of brushless motors of different models and facilitating installation.

[0034] In order to realize the installation of different types of brushless motors and make the axis of the installed brushless motor coaxial with the axis of the load component 3, as shown in FIG. Figure 3As shown, the mounting mechanism 7 includes a hydraulic cylinder 72, a fixing plate 74 is provided at the output end of the hydraulic cylinder 72, four supporting columns 73 are provided in a rectangular array at the lower end of the fixing plate 74, a U-shaped bracket 71 is provided outside the four supporting columns 73, and a clamping mechanism 75 is provided at the upper end of the fixing plate 74.

[0035] It should be noted that the four support columns 73 pass through the upper end of the U-shaped bracket 71 together, the output end of the hydraulic cylinder 72 passes through the U-shaped bracket 71 and is fixedly connected to the middle part of the lower end of the fixed plate 74, and the four support columns 73 play a role in assisting the up and down sliding. The specific installation method of the hydraulic cylinder 72 in the present invention, the circuit connection method and the control method are all conventional designs, which are conventional design means of designers, and the hydraulic cylinder 72 is controlled by the controller 9.

[0036] First, by adjusting the clamping mechanism 75, different types of brushless motors are installed through the clamping mechanism 75. After installation, the clamping mechanism 75 is used to detect whether the axis of the brushless motor is the same as the axis of the load component 3. Then, the controller 9 controls the hydraulic cylinder 72 to drive the fixed plate 74 and the clamping mechanism 75 on the fixed plate 74 to move up and down to a suitable position under the cooperation of the four support columns 73 and the U-shaped bracket 71, so that the axis of the brushless motor installed on the clamping mechanism 75 is the same as the axis of the load component 3, which is convenient for the subsequent connection between the output end of the brushless motor and the coupling in the load component 3.

[0037] Further explanation, such as Figure 4 and Figure 5 As shown, the clamping mechanism 75 includes a shaking component 759, and a positioning group 758 and an L-shaped clamp 755 are respectively provided on the front and rear sides of the outer surface of the shaking component 759, and round rods 757 are symmetrically provided on the rear side of the positioning group 758 in the horizontal direction, and rod sleeves 756 are symmetrically provided on the front end of the L-shaped clamp 755 in the horizontal direction. The outer surfaces of the two round rods 757 are respectively slidably connected with the inner cavities of the two rod sleeves 756, and the lower side of the outer surface of the positioning group 758 and the lower side of the outer surface of the L-shaped clamp 755 are jointly provided with a through groove bottom plate 751, and a plurality of mounting holes 752 are opened on the upper end of the through groove bottom plate 751, and the bottom walls of the inner cavities of the plurality of mounting holes 752 are provided with springs 753, and the upper ends of the plurality of springs 753 are provided with top columns 754, and the lower end of the through groove bottom plate 751 is fixedly connected to the upper end of the fixing plate 74, and the outer surfaces of the plurality of top columns 754 are respectively slidably connected with the inner cavities of the plurality of mounting holes 752.

[0038] In detail, it should be noted that the shaking component 2 759 is composed of a shaking handle and a bidirectional threaded rod. First, the brushless motor to be tested is placed on a number of top columns 754. The pressed top columns 754 then compress the spring 753 below and slide downward in the inner cavity of the mounting hole 752 to make the top columns 754 fit the bottom of the brushless motor more closely. Then, the shaking component 2 759 is rotated to make the L-shaped clamp 1 755 and the positioning group 758 move toward each other, and the brushless motor is clamped and fixed to prevent shaking during subsequent testing. Then, the axial position of the brushless motor is detected by adjusting the positioning group 758. With the cooperation of the U-shaped bracket 71, the hydraulic cylinder 72, the support column 73, the fixing plate 74 and the controller 9, the axial center of the brushless motor is made the same as the axial center of the load component 3, which is convenient for the subsequent connection between the output end of the brushless motor and the coupling.

[0039] Further explanation, such as Figure 6 As shown, the positioning group 758 includes an L-shaped clamp plate 7581, a threaded hole 7583 is provided on the lower middle part of the front end of the L-shaped clamp plate 7581, the inner cavity of the threaded hole 7583 is meshed with the front side of the outer surface of the shaking component 759, a limiting groove 7582 is provided on the front side of the right end of the L-shaped clamp plate 7581, a threaded rod 7584 is provided in the inner cavity of the limiting groove 7582, a rotating block 7585 is provided on the upper side of the outer surface of the threaded rod 7584, a positioning component 7587 is provided on the outer surface of the threaded rod 7584, the upper end of the threaded rod 7584 passes through the top wall of the inner cavity of the limiting groove 7582 and is fixedly connected with a knob 7586, the lower rear part of the outer surface of the L-shaped clamp plate 7581 is slidably connected to the front side of the inner cavity of the through groove bottom plate 751, the outer surface of the rotating block 7585 is rotatably connected to the upper side of the inner cavity of the limiting groove 7582, and the left side of the outer surface of the positioning component 7587 is slidably connected to the inner cavity of the limiting groove 7582.

[0040] It should be noted that the specific installation method of the positioning component 7587, the circuit connection method and the control method in the present invention are all conventional designs and are conventional design means of designers. The positioning component 7587 includes a sliding block and a right-angle infrared sensor that are compatible with the threaded rod 7584 and the limiting groove 7582.

[0041] In detail, after the brushless motor is clamped and fixed by L-shaped clamp plate 1 755 and L-shaped clamp plate 2 7581, by rotating knob 7586, the threaded rod 7584 is driven by knob 7586 to rotate in the inner cavity of the limit groove 7582 in cooperation with the rotating block 7585, and the positioning component 7587 is driven to move up and down in the inner cavity of the limit groove 7582 to a suitable position, so that the positioning component 7587 is at the same height in the horizontal direction as the axis of the brushless motor. With the cooperation of the U-shaped bracket 71, the hydraulic cylinder 72, the support column 73, the fixing plate 74 and the controller 9, the positioning component 7587 detects the horizontal height of the axis of the load component 3, and the hydraulic cylinder 72 stops moving, so that the axis of the brushless motor is the same as the axis of the load component 3.

[0042] Embodiment 2: Based on Embodiment 1, this embodiment enables the mounting mechanism 7 to drive the brushless motor to move left and right, such as Figure 7 As shown, the sliding group 6 includes a concave plate 61, and an L-shaped slide groove 63 is symmetrically arranged at the front and back of the upper end of the concave plate 61. A plurality of rotating rollers 64 are arranged in the inner cavity of the concave plate 61. The inner cavities of the two L-shaped slide grooves 63 are respectively provided with L-shaped slide plates 62. A connecting plate 65 is commonly arranged at the upper ends of the two L-shaped slide plates 62. A mounting groove 66 is arranged in the middle of the upper end of the connecting plate 65. The bottom wall of the inner cavity of the mounting groove 66 is fixedly connected to the lower end of the hydraulic cylinder 72. The upper end of the connecting plate 65 is fixedly connected to the lower end of the U-shaped bracket 71. A sensor 2 67 is arranged in the middle of the front end of the connecting plate 65. The lower end of the connecting plate 65 is in contact with the upper side of the outer surface of the plurality of rotating rollers 64.

[0043] It should be noted that the specific installation method of the sensor 2 67 and the circuit connection method and control method in the present invention are all conventional designs and are conventional design means for designers.

[0044] First, the two L-shaped slides 62 can slide left and right in the inner cavities of the two L-shaped grooves 63 respectively. When the connecting plate 65 is pushed, the two L-shaped slides 62 and the two L-shaped grooves 63 cooperate to make the connecting plate 65 slide left and right on the surfaces of the plurality of rotating rollers 64, and at the same time drive the sensor 2 67 and the mounting mechanism 7 installed on the connecting plate 65 to move left and right, and further drive the brushless motor installed on the mounting mechanism 7 to move left and right.

[0045] In order to drive the connecting plate 65 to move, Figure 8 As shown, the pushing group 5 includes a supporting plate 51 fixedly connected to the left side of the upper end of the reinforcing plate 2, a threaded hole 52 is provided in the middle of the left end of the supporting plate 51, a rocking component 53 is meshedly connected to the inner cavity of the threaded hole 52, a rotating seat 54 is provided on the right side of the outer surface of the rocking component 53, and the lower end of the rotating seat 54 is fixedly connected to the left side of the upper end of the connecting plate 65.

[0046] It should be noted that the rocking component 53 is composed of a rocking handle, a long threaded rod and a round block. The inner cavity of the rotating seat 54 is rotatably connected to the round block in the rocking component 53. When the rocking component 53 is rotated, the rocking component 53 will move left and right in the inner cavity of the threaded hole 52, and at the same time, it will drive the rotating seat 54 to move left and right to a suitable position, and then drive the connecting plate 65 to move left and right on the upper side of the outer surface of the plurality of rotating rollers 64 to a suitable position through the rotating seat 54.

[0047] In order to automatically connect or disconnect the wires on the brushless motor, such as Fig. 9 and Fig.10As shown, the wiring group 4 includes a shell 41 fixedly connected to the front left side of the upper end of the workbench 1, a fixed clamping plate 42 is provided on the front side of the inner cavity of the shell 41, a movable clamping plate 43 is provided on the rear side of the inner cavity of the shell 41, a propeller 44 is provided at the rear end of the shell 41, an output end of the propeller 44 passes through the middle of the rear end of the shell 41 and is fixedly connected to the movable clamping plate 43, and a sensor 45 is provided in the middle of the rear end of the propeller 44.

[0048] It should be noted that the specific installation method of the propeller 44 and the sensor 1 45 in the present invention, the connection method of the circuit and the control method are all conventional designs, which are conventional design means of designers. 55 is compatible with the sensor 2 67. When in the initial state, the sensor 2 67 and the sensor 1 45 are horizontally connected, the propeller 44 drives the movable splint 43 in the inner cavity of the shell 41 away from the fixed splint 42 and is in an open state. When the connecting plate 65 drives the sensor 2 67 to move left and right, the sensor 2 67 and the sensor 1 45 no longer sense each other, the propeller 44 will push the movable splint 43 close to the fixed splint 42, and clamp and fix the wire inserted between the fixed splint 42 and the movable splint 43. When it is necessary to detect the brushless motor, start the controller 9, and control 32 through the controller 9 to cooperate with the movable splint 43 to turn on the power. When no detection is performed, the power is no longer turned on.

[0049] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A brushless motor load detection device, comprising a workbench (1), characterized in that: A controller (9) is provided at the right rear portion of the upper end of the workbench (1); a reinforcing plate (2) is provided at the middle portion of the upper end of the workbench (1); a load component (3) is provided at the right side of the upper end of the reinforcing plate (2); a sliding group (6) is provided at the middle portion of the upper end of the reinforcing plate (2); a mounting mechanism (7) is provided at the upper portion of the sliding group (6); a pushing group (5) is provided on the left side of the sliding group (6) and on the left side of the upper end of the reinforcing plate (2); a wiring group (4) is provided at the front portion of the left side of the upper end of the workbench (1); and a sensing component (8) is provided on the left side of the load component (3); The mounting mechanism (7) comprises a hydraulic cylinder (72), the output end of the hydraulic cylinder (72) is provided with a fixing plate (74), the lower end of the fixing plate (74) is provided with four supporting columns (73) in a rectangular array, the four supporting columns (73) are provided with a U-shaped bracket (71) on the outside, and the upper end of the fixing plate (74) is provided with a clamping mechanism (75); The clamping mechanism (75) comprises a second rocking component (759), and a positioning group (758) and an L-shaped clamping plate (755) are respectively provided on the front and rear sides of the outer surface of the second rocking component (759), and a round rod (757) is symmetrically provided on the rear side of the positioning group (758) in the horizontal direction, and a rod sleeve (756) is symmetrically provided on the front end of the L-shaped clamping plate (755) in the horizontal direction, and the outer surfaces of the two round rods (757) are respectively slidably connected with the inner cavities of the two rod sleeves (756), and the lower side of the outer surface of the positioning group (758) and the lower side of the outer surface of the L-shaped clamping plate (755) are jointly provided with a through groove bottom plate (751), and a plurality of mounting holes (752) are opened at the upper end of the through groove bottom plate (751), and the bottom walls of the inner cavities of the plurality of mounting holes (752) are provided with springs (753), and the upper ends of the plurality of springs (753) are provided with top columns (754); The positioning group (758) comprises an L-shaped clamping plate (7581), a threaded hole (7583) is provided at the lower middle part of the front end of the L-shaped clamping plate (7581), the inner cavity of the threaded hole (7583) is meshedly connected with the front side of the outer surface of the second shaking component (759), a limiting groove (7582) is provided at the front side of the right end of the L-shaped clamping plate (7581), a threaded rod (7584) is provided in the inner cavity of the limiting groove (7582), a rotating block (7585) is provided on the upper side of the outer surface of the threaded rod (7584), a positioning component (7587) is provided on the outer surface of the threaded rod (7584), and the upper end of the threaded rod (7584) passes through the top wall of the inner cavity of the limiting groove (7582) and is fixedly connected with a knob (7586); The lower rear part of the outer surface of the second L-shaped clamping plate (7581) is slidably connected to the front side of the inner cavity of the through groove bottom plate (751), the outer surface of the rotating block (7585) is slidably connected to the upper side of the inner cavity of the limiting groove (7582), and the left side of the outer surface of the positioning component (7587) is slidably connected to the inner cavity of the limiting groove (7582); The sliding group (6) comprises a concave plate (61), the upper end of the concave plate (61) is symmetrically provided with an L-shaped slide groove (63) in the front and rear directions, the inner cavity of the concave plate (61) is provided with a plurality of rotating rollers (64), the inner cavities of the two L-shaped slide grooves (63) are respectively provided with an L-shaped slide plate (62), the upper ends of the two L-shaped slide plates (62) are commonly provided with a connecting plate (65), the middle part of the upper end of the connecting plate (65) is provided with a mounting groove (66), the bottom wall of the inner cavity of the mounting groove (66) is fixedly connected to the lower end of the hydraulic cylinder (72), the upper end of the connecting plate (65) is fixedly connected to the lower end of the U-shaped bracket (71), the middle part of the front end of the connecting plate (65) is provided with a second sensor (67), and the lower end of the connecting plate (65) is in contact with the upper side of the outer surface of the plurality of rotating rollers (64); The wiring group (4) comprises a casing (41) fixedly connected to the left front portion of the upper end of the workbench (1); a fixed clamping plate (42) is provided at the front side of the inner cavity of the casing (41); a movable clamping plate (43) is provided at the rear side of the inner cavity of the casing (41); a propeller (44) is provided at the rear end of the casing (41); an output end of the propeller (44) passes through the middle portion of the rear end of the casing (41) and is fixedly connected to the movable clamping plate (43); and a sensor (45) is provided at the middle portion of the rear end of the propeller (44).

2. A brushless motor load detection device according to claim 1, characterized in that: The lower end of the through-groove bottom plate (751) is fixedly connected to the upper end of the fixed plate (74), and the outer surfaces of the plurality of top columns (754) are respectively slidably connected to the inner cavities of the plurality of mounting holes (752).

3. A brushless motor load detection device according to claim 1, characterized in that: The pushing group (5) comprises a supporting plate (51) fixedly connected to the left side of the upper end of the reinforcing plate (2); a threaded hole (52) is provided in the middle of the left end of the supporting plate (51); a rocking component (53) is meshedly connected to the inner cavity of the threaded hole (52); a rotating seat (54) is provided on the right side of the outer surface of the rocking component (53); and the lower end of the rotating seat (54) is fixedly connected to the left side of the upper end of the connecting plate (65).

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