Bidirectional multipurpose dynamometer
By adopting the design of installation components and limit components in the bidirectional loading dynamometer, the problems of troublesome height adjustment of the power unit and high testing costs are solved, rapid installation and efficient testing of the motor under test are achieved, and detection accuracy and efficiency are improved. efficiency.
Patent Information
- Application Number
- CN202411503130.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-01-21
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When using power units of different sizes of existing two-way loading dynamometers, a three-dimensional rig needs to be set up to adjust the height of the power units, which leads to troublesome testing and high cost, and the wear kinetic energy loss of the universal mechanism is difficult to calculate and compensate.
A bidirectional multi-purpose dynamometer is designed, which uses mounting components and limit components to adjust the output shaft position of the motor under test and the position of the connecting component. Through the cooperation of multiple limit slots and connecting components, the motor under test is realized. Quickly install and disassemble, and calculate kinetic energy losses.
There is no need to set up a three-dimensional bench, which reduces the test cost of the motor under test, improves installation efficiency and accuracy, simplifies the test process, and improves the accuracy of the test results by calculating kinetic energy loss.
Smart Images
Figure CN119334510A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of power measurement, in particular to a bidirectional multi-purpose dynamometer. Background Art
[0002] The bidirectional loading dynamometer is a device specially used to test the performance of power equipment (such as engines, motors, etc.). It can simulate various load conditions in actual work. After adding a speed increase box on one side of the bidirectional loading dynamometer, it can perform 20,000rpm high-speed motor testing. The other side, with the inertia box and reduction box, can simulate the inertia of the whole vehicle and perform hub motor testing.
[0003] In the related art, when power units of different sizes are used, since the height of the output shaft of the power unit is not fixed, a three-dimensional test bench needs to be set up to adjust the height of the power unit. The adjustment is troublesome and the testing cost is high. A universal mechanism can also be set to solve the problem of unstable height, but the kinetic energy loss caused by the wear of the universal mechanism cannot be calculated and is difficult to calculate and compensate. Summary of the invention
[0004] Based on this, it is necessary to provide a bidirectional multi-purpose dynamometer to address the current problems of troublesome testing, high testing cost and inaccurate testing.
[0005] The above purpose is achieved through the following technical solutions:
[0006] The bidirectional multi-purpose dynamometer comprises: a mounting frame; a test assembly, wherein the test assembly is arranged on the mounting frame, and one end of the test assembly is suitable for being connected to an inertia box and a reduction box so as to simulate the inertia of the whole vehicle; a mounting assembly, wherein the mounting assembly comprises a mounting seat and a mounting part, wherein the mounting seat is arranged on the mounting frame and is spaced opposite to the other end of the test assembly, wherein the mounting seat is suitable for mounting a motor under test, wherein the motor under test can be adjusted relative to the mounting seat along the width direction of the mounting frame, wherein the mounting part is passed through the motor under test and connected to the mounting seat; a connecting assembly, wherein the connecting assembly is arranged on the mounting frame and is located between the test assembly and the mounting assembly, wherein one end of the connecting assembly is rotatably connected to the other end of the test assembly; a limiting assembly, wherein the limiting assembly comprises a limiting part and a limiting plate, wherein the limiting plate is arranged on the mounting frame and is located between the test assembly and the mounting assembly. Between the test component and the mounting component, the limit plate is arranged adjacent to the mounting component, and the limit plate is provided with the limit groove which penetrates the limit component along the length direction of the mounting frame. In the projection plane orthogonal to the length direction of the mounting frame, the limit groove is arc-shaped and the center of the limit groove coincides with the rotation center of one end of the connecting component. The limit member is passed through the limit groove. The dynamometer has a first state and a second state. In the first state, the limit member slides in the limit groove so that the limit member is at the same height as the output shaft of the motor under test, and the motor under test moves on the mounting seat so that the two ends of the limit member are respectively connected to the other end of the connecting component and the output shaft of the motor under test. In the second state, the limit member is fixed in the limit groove and the motor under test drives the connecting component to rotate through the limit member.
[0007] Preferably, there are multiple limit grooves, and in the projection plane orthogonal to the length direction of the mounting frame, the multiple limit grooves are all arc-shaped and the centers of the multiple limit grooves coincide with the rotation center of one end of the connecting component. The multiple limit grooves are arranged in sequence along the middle of the limit plate toward the edge of the limit plate at intervals, and the limit member can be inserted into one of the multiple limit grooves.
[0008] Preferably, the two ends of the limiting groove are respectively arranged opposite to each other in the up-down direction, and the central angle of the limiting groove is not less than 180°, and two adjacent limiting grooves are connected to each other.
[0009] Preferably, the connecting assembly includes a first section, a second section and a third section which are connected in sequence, the second section and the first section and the second section and the third section are connected via a universal joint, the first section is rotatably connected to the test assembly, and in a projection plane orthogonal to the length direction of the mounting frame, the center of the limit groove coincides with the rotation center of the first section, the second section is a telescopic member, and the second section is extended or shortened along its axial direction.
[0010] Preferably, the mounting seat is provided with a plurality of mounting holes arranged at intervals along the width direction of the mounting frame, the mounting holes penetrate the mounting seat along the height direction of the mounting seat, the motor under test is arranged on the mounting seat and the mounting member passes through the motor under test and is arranged in the mounting holes, so that the motor under test is installed on the mounting seat through the mounting member.
[0011] Preferably, the mounting assembly further comprises a slide rail, which is disposed on the mounting seat and extends along the width direction of the mounting frame, so that the motor under test moves on the mounting seat via the slide rail.
[0012] Preferably, the limiting member includes: a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are respectively arranged on both sides of the limiting groove, the other end of the connecting component passes through the first clamping plate and is inserted into the second clamping plate, and a flange is provided on the connecting component, and the flange abuts against the first clamping plate so that the connecting component drives the first clamping plate to move; a connecting tube, one end of the connecting tube is arranged on a side of the second clamping plate away from the first clamping plate and is suitable for being connected to the output shaft of the motor under test, the other end of the connecting tube is inserted into the other end of the connecting component, the inner circumferential surface of the connecting tube and the outer circumferential surface of the connecting component cooperate, the second state includes a first sub-state and a second sub-state, in the first sub-state, the motor under test drives the connecting tube to rotate, and the connecting tube moves in the direction adjacent to the second clamping plate to drive the first clamping plate and the second clamping plate to clamp the limiting plate, and in the second sub-state, the motor under test drives the connecting component to rotate through the connecting tube.
[0013] Preferably, the limit member also includes: a first thrust bearing, which is passed through the connecting component and located between the first clamping plate and the flange; and a second thrust bearing, which is passed through the connecting component and located between the second clamping plate and the connecting cylinder.
[0014] Preferably, the outer circumferential surface of the other end of the connecting component is provided with an external thread, and the inner circumferential surface of the other end of the connecting tube is provided with an internal thread. The connecting component and the connecting tube are matched through threads. In the first state, the connecting tube drives the connecting component to move so that the first clamping plate and the second clamping plate clamp the limit plate. In the second state, the connecting tube drives the connecting component to rotate.
[0015] Preferably, the limiting member also includes a limiting sleeve, the limiting sleeve is inserted into the limiting groove and the other end of the connecting component is inserted into the limiting sleeve, the first clamping plate is connected to the limiting sleeve, and the second clamping plate is inserted into the limiting sleeve and is movable relative to the limiting sleeve along the axial direction of the limiting sleeve.
[0016] The beneficial effects of the present invention are as follows: an installation component and a limit component are set, and the position of the output shaft of the motor under test and the position of the connecting component are respectively adjusted through the installation component and the limit component to connect the connecting component and the output shaft of the motor under test to facilitate testing of the motor under test. Compared with the related art, there is no need to set up a three-dimensional test bench, which reduces the testing cost of the motor under test, improves the installation efficiency of the motor under test, shortens the installation time of the motor under test, and further improves the installation efficiency of the motor under test through the cooperation of multiple limit slots and connecting components, and the kinetic energy loss generated by the connecting component corresponding to each limit slot is constant, thereby improving the accuracy of the detection result. Finally, a limit piece is set to enable the connecting component and the output shaft of the motor under test to be quickly connected and disassembled, so that the motor under test drives the connecting component to rotate, thereby improving the detection efficiency of the bidirectional multi-purpose dynamometer. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A schematic structural diagram of a bidirectional multi-purpose dynamometer according to an embodiment of the present invention;
[0018] Figure 2 for Figure 1 A partial enlarged view of middle A;
[0019] Figure 3 for Figure 1 A partial enlarged view of B in the middle;
[0020] Figure 4 It is a right side view of a bidirectional multi-purpose dynamometer according to an embodiment of the present invention;
[0021] Figure 5 for Figure 4 Sectional view of AA in the middle;
[0022] Figure 6 for Figure 5 Enlarged view of middle C;
[0023] Figure 7 for Figure 4Schematic diagram of the structure of AA;
[0024] Figure 8 for Figure 7 Enlarged view of D in the middle.
[0025] in:
[0026] 100. bidirectional multi-purpose dynamometer; 110. mounting frame; 120. test assembly; 121. sensor; 122. actuator;
[0027] 130, mounting assembly; 131, mounting seat; 1311, mounting hole; 132, mounting piece; 133, slide rail;
[0028] 140, connecting assembly; 141, first section; 142, second section; 1421, outer tube; 1422, inner rod; 1423, screw; 1424, threaded hole; 143, third section; 1431, external thread; 144, flange; 145, universal joint;
[0029] 150, limit assembly; 151, limit member; 1511, first clamping plate; 1512, second clamping plate; 152, limit plate; 1521, limit groove; 153, connecting tube; 154, first thrust bearing; 155, second thrust bearing; 156, limit sleeve;
[0030] 160. Motor under test; 161. Connecting sleeve. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0032] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.
[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0034] like Figure 1-8 As shown, an embodiment of the present invention provides a bidirectional multi-purpose dynamometer 100 including a mounting frame 110 , a test assembly 120 , a mounting assembly 130 , a connecting assembly 140 and a limiting assembly 150 .
[0035] The test assembly 120 is disposed on the mounting frame 110, and one end of the test assembly 120 is suitable for connecting to the inertia box and the reduction box to perform vehicle inertia simulation. Figure 1 As shown, the mounting frame 110 is a rectangular frame and extends in the left-right direction. The test assembly 120 includes a sensor 121 and an actuator 122 and both are arranged on the mounting frame 110. The left end of the test assembly 120 is connected to the inertia box and the reduction box to simulate the inertia of the whole vehicle.
[0036] The mounting assembly 130 includes a mounting seat 131 and a mounting member 132. The mounting seat 131 is disposed on the mounting frame 110 and is spaced apart from the other end of the test assembly 120. The mounting seat 131 is suitable for mounting the motor 160 under test. The motor 160 under test can be adjusted relative to the mounting seat 131 along the width direction of the mounting frame 110. The mounting member 132 is passed through the motor 160 under test and connected to the mounting seat 131. Specifically, Figure 1 and Figure 3 As shown, the mounting seat 131 is arranged on the mounting frame 110 and is located on the right side of the test component 120 and is spaced apart from the test component 120. The motor 160 under test is arranged on the mounting seat 131, and the motor 160 under test can move on the mounting seat 131 along the front-rear direction. The mounting member 132 passes through the motor 160 under test and is connected to the mounting seat 131, so that the motor 160 under test is fixed on the mounting seat 131.
[0037] The connecting assembly 140 is disposed on the mounting frame 110 and is located between the test assembly 120 and the mounting assembly 130. One end of the connecting assembly 140 is rotatably connected to the other end of the test assembly 120. Figure 1 As shown, the connection assembly 140 is disposed on the mounting frame 110 and the left end of the connection assembly 140 is connected to the right end of the test assembly 120 , so that the performance of the motor 160 under test can be tested through the test assembly 120 .
[0038] The limiting assembly 150 includes a limiting member 151 and a limiting plate 152. The limiting plate 152 is disposed on the mounting frame 110 and is located between the test assembly 120 and the mounting assembly 130. The limiting plate 152 is disposed adjacent to the mounting assembly 130. The limiting plate 152 is provided with a positioning member 151 and a positioning member 152 along the length direction of the mounting frame 110 (such as Figure 1 The limiting groove 1521 of the limiting assembly 150 (in the left and right direction as shown) is penetrated. In the projection plane orthogonal to the length direction of the mounting frame 110, the limiting groove 1521 is arc-shaped and the center of the limiting groove 1521 coincides with the rotation center of one end of the connecting assembly 140. The limiting member 151 is disposed in the limiting groove 1521. Specifically, as Figure 1 and Figure 2 As shown, the limit plate 152 is a vertical plate extending in the front-to-back direction. The limit plate 152 is fixed on the mounting frame 110 and is located between the test component 120 and the mounting component 130. The limit plate 152 is provided with a limit groove 1521 which penetrates the limit plate 152 in the left-right direction. The limit groove 1521 is arc-shaped and the center of the limit groove 1521 coincides with the rotation center of the left end of the connecting component 140. The limit member 151 is inserted into the limit groove 1521.
[0039] The bidirectional multi-purpose dynamometer 100 has a first state and a second state. In the first state, the limit member 151 slides in the limit groove 1521 so that the limit member 151 is at the same height as the output shaft of the motor 160 under test, and the motor 160 under test moves on the mounting seat 131 so that the two ends of the limit member 151 are respectively connected to the other end of the connecting component 140 and the output shaft of the motor 160 under test. In the second state, the limit member 151 is fixed in the limit groove 1521 and the motor 160 under test drives the connecting component 140 to rotate through the limit member 151. Specifically, in the first state, the limit member 151 slides in the limit groove 1521, so that the limit member 151 is at the same height as the output shaft of the motor 160 under test, thereby facilitating the connection between the limit member 151 and the right end of the connecting component 140 and the output shaft of the motor 160 under test. In the second state, the limit member 151 is fixedly installed in the limit groove 1521, and the left and right ends of the limit member 151 are respectively connected to the right end of the connecting component 140 and the output shaft of the motor 160 under test, so that the motor 160 under test drives the connecting component 140 to rotate through the limit member 151.
[0040] The bidirectional multi-purpose dynamometer 100 of the embodiment of the present invention is provided with an installation component 130, a connection component 140 and a limit component 150. The position of the output shaft of the motor 160 under test in the front-to-rear direction is adjusted by the installation component 130. The connection component 140 is adjusted to the same height as the output shaft of the motor 160 under test by the cooperation of the connection component 140 and the limit component 150. The connection component 140 and the output shaft of the motor 160 under test can be connected to facilitate the testing of the motor 160 under test. Compared with the related art, there is no need to set up a three-dimensional test bench, which reduces the testing cost of the motor 160 under test, improves the installation efficiency of the motor 160 under test, and shortens the installation time of the motor 160 under test.
[0041] In some embodiments, the connection assembly 140 includes a first section 141, a second section 142, and a third section 143 connected in sequence, the second section 142 and the first section 141 and the second section 142 and the third section 143 are connected via a universal joint 145, the first section 141 is rotatably connected to the test assembly 120, and in a projection plane orthogonal to the length direction of the mounting frame 110, the center of the limiting groove 1521 coincides with the rotation center of the first section 141. Specifically, as Figure 1 As shown, the first section 141, the second section 142 and the third section 143 are all horizontal bars extending in the left and right directions. The left end of the first section 141 is inserted into the right end of the test assembly 120 and connected to the test assembly 120. The right end of the first section 141 is connected to the left end of the second section 142 through a universal joint 145. The right end of the second section 142 and the left end of the third section 143 are connected through a universal joint 145. The left end of the third section 143 is connected to the stopper 151. Therefore, by adjusting the angle between the first section 141 and the second section 142 and the angle between the second section 142 and the third section 143, the connection assembly can be 140 is arranged between the test component 120 and the limit component 150, and the center of the limit groove 1521 coincides with the rotation center of the first section 141. When the connecting component 140 moves on the limit groove 1521 along with the limit component 150, the bending angles generated between the first section 141, the second section 142 and the third section 143 are constant, so the loss of the motor momentum is also fixed, so that the kinetic energy loss of the connecting component 140 caused by the setting wear of the universal joint 145 remains unchanged, so that the kinetic energy loss of the connecting component 140 can be calculated in advance, thereby improving the test accuracy of the bidirectional multi-purpose dynamometer 100.
[0042] In some embodiments, there are multiple limiting grooves 1521. In the projection plane orthogonal to the length direction of the mounting frame 110, the multiple limiting grooves 1521 are all arc-shaped and the centers of the multiple limiting grooves 1521 coincide with the rotation center of one end of the connecting component 140. The multiple limiting grooves 1521 are sequentially arranged at intervals along the middle of the limiting plate 152 toward the edge of the limiting plate 152. The limiting member 151 can be inserted into one of the multiple limiting grooves 1521. Specifically, as Figure 1 and Figure 4 As shown, there are multiple limit grooves 1521, and the multiple limit grooves 1521 are all arranged on the limit plate 152. The centers of the multiple limit grooves 1521 are arranged relative to the rotation center of the first section 141 in the left and right directions. The diameters of the multiple limit grooves 1521 gradually decrease from back to front, so that the multiple limit grooves 1521 can increase the movement range of the limit member 151, so that the limit member 151 can adapt to different types of motors (in other words, the limit member 151 can adapt to more heights of the motors 160 under test), thereby increasing the use range of the bidirectional multi-purpose dynamometer 100. Since the bending angle generated by the corresponding connecting component 140 in each limit groove 1521 is constant, the energy loss generated by the universal joint 145 of the connecting component 140 is also constant. Therefore, the kinetic energy loss caused by the universal joint 145 in each limit groove 1521 can be calculated in advance, thereby improving the test accuracy of the bidirectional multi-purpose dynamometer 100.
[0043] In some embodiments, the two ends of the limiting groove 1521 are respectively arranged opposite to each other in the up-down direction, and the central angle of the limiting groove 1521 is not less than 180°, and two adjacent limiting grooves 1521 are connected to each other. Figure 1 and Figure 4 As shown, the central angle of the limit groove 1521 is 180°, and the two ends of the limit groove 1521 are arranged relatively spaced apart in the up and down directions. Therefore, the limit member 151 can be adjusted to be at the same height as the output shaft of the motor in the up and down directions, thereby ensuring the moving range of the limit member 151. Two adjacent limit grooves 1521 are connected to each other, and there is no need to take the limit member 151 out of the limit groove 1521. The limit member 151 can be moved in two adjacent limit grooves 1521 by moving in the limit groove 1521.
[0044] In some embodiments, the second section 142 is a telescopic member, and the second section 142 is Figure 1 Specifically, Figure 2As shown, the telescopic member includes an outer cylinder 1421 and an inner rod 1422. The inner rod 1422 is movably inserted into the outer cylinder 1421. The inner rod 1422 is provided with a plurality of threaded holes 1424 equally spaced along the left-right direction. The outer cylinder 1421 is provided with a screw 1423. The screw 1423 passes through the outer cylinder 1421 and is threadedly engaged with the threaded hole 1424 to fix the inner rod 1422 on the outer cylinder 1421, thereby fixing the length of the telescopic member.
[0045] In some embodiments, the mounting seat 131 is provided with a plurality of holes along the width direction of the mounting frame 110 (eg, Figure 1 The plurality of mounting holes 1311 are arranged at intervals in the front-to-back direction (as shown in FIG. 1 ), and the mounting holes 1311 are arranged along the height direction of the mounting seat 131 (as shown in FIG. 1 ). Figure 1 The motor 160 to be tested is arranged on the mounting seat 131 and the mounting member 132 passes through the motor 160 to be tested and is arranged in the mounting hole 1311, so that the motor 160 to be tested is installed on the mounting seat 131 through the mounting member 132. Specifically, Figure 1 and Figure 3 As shown, the mounting seat 131 is provided with a plurality of mounting holes 1311 spaced apart along the front-to-back direction, the mounting holes 1311 penetrate the mounting seat 131 and may be threaded through holes, the mounting member 132 may be a screw or a bolt, and when the position of the motor 160 under test is adjusted, the mounting member 132 is passed through the motor 160 under test and threadedly matched with the mounting holes 1311, so that the motor 160 under test is fixed on the mounting seat 131.
[0046] In some embodiments, the mounting assembly 130 further includes a slide rail 133, which is disposed on the mounting seat 131 and extends along the width direction of the mounting frame 110, so that the motor 160 under test can move on the mounting seat 131 through the slide rail 133. Figure 1 and Figure 3 As shown, the slide rail 133 extends in the front-to-back direction and is arranged on the mounting seat 131, and a slide groove is provided at the bottom of the motor 160 under test, so that the motor 160 under test can move smoothly in the front-to-back direction on the mounting seat 131 through the cooperation of the slide rail 133 and the slide groove.
[0047] In some embodiments, the limiting member 151 includes a first clamping plate 1511 , a second clamping plate 1512 and a connecting tube 153 .
[0048] The first clamping plate 1511 and the second clamping plate 1512 are respectively arranged on both sides of the limiting groove 1521, and the other end of the connecting component 140 passes through the first clamping plate 1511 and is arranged in the second clamping plate 1512. The connecting component 140 is provided with a flange 144, and the flange 144 abuts against the first clamping plate 1511, so that the connecting component 140 drives the first clamping plate 1511 to move. Specifically, as Figure 5-Figure 8As shown, the first clamping plate 1511 and the second clamping plate 1512 are respectively arranged on the left and right sides of the limiting groove 1521, the third section 143 of the connecting component 140 is inserted into the limiting groove 1521 and the first clamping plate 1511 and the second clamping plate 1512 are sleeved on the third section 143, and the outer peripheral surface of the third section 143 is provided with a flange 144, and the flange 144 is located at the left end of the first clamping plate 1511 and abuts against the first clamping plate 1511.
[0049] One end of the connecting tube 153 is arranged on the side of the second clamping plate 1512 away from the first clamping plate 1511 and is suitable for connecting with the output shaft of the motor 160 under test. The other end of the connecting tube 153 is passed through the other end of the connecting assembly 140. The inner circumference of the connecting tube 153 matches the outer circumference of the connecting assembly 140. The second state includes a first sub-state and a second sub-state. In the first sub-state, the motor 160 under test drives the connecting tube 153 to rotate, and the connecting tube 153 moves toward the direction adjacent to the second clamping plate 1512 to drive the first clamping plate 1511 and the second clamping plate 1512 to clamp the limit plate 152. In the second sub-state, the motor 160 under test drives the connecting assembly 140 to rotate through the connecting tube 153. Specifically, Figure 5-Figure 8 As shown, the connecting tube 153 is arranged between the second clamping plate 1512 and the output shaft of the motor 160 under test, a sliding rod is provided at the right end of the connecting tube 153, a connecting sleeve 161 is provided on the output shaft of the motor 160 under test, and the connecting sleeve 161 is connected to the output shaft through a pin shaft, and a sliding groove is provided on the left end face of the connecting sleeve 161, and the sliding rod is passed through the sliding groove, so that the connecting tube 153 is connected to the output shaft of the motor 160 under test, thereby driving the connecting tube 153 to rotate through the motor 160 under test, and the left end of the connecting tube 153 cooperates with the right end of the third section 143. In the first sub-state, the motor 160 under test drives the connecting tube 153 to rotate so that the connecting tube 153 moves to the left, and the connecting assembly 140 moves to the right, thereby driving the first clamping plate 1511 and the second clamping plate 1512 to clamp the limit plate 152. In the second sub-state, the motor 160 under test drives the connecting assembly 140 to rotate, thereby detecting the motor 160 under test through the test assembly 120.
[0050] The outer circumference of the other end of the connecting assembly 140 is provided with an external thread 1431, and the inner circumference of the other end of the connecting tube 153 is provided with an internal thread. The connecting assembly 140 and the connecting tube 153 are threadedly matched. In the first state, the connecting tube 153 drives the connecting assembly 140 to move so that the first clamping plate 1511 and the second clamping plate 1512 clamp the limiting plate 152. In the second state, the connecting tube 153 drives the connecting assembly 140 to rotate. Specifically, as Figure 5-Figure 8As shown, the outer circumference of the right end portion of the third section 143 is provided with an external thread 1431, and the inner circumference of the left end portion of the connecting tube 153 is provided with an internal thread. The connecting tube 153 and the third section 143 are matched by internal and external threads. In the first sub-state, the motor 160 under test drives the connecting tube 153 to rotate, and the connecting tube 153 drives the connecting assembly 140 to move to the right through threaded cooperation, so that the first clamping plate 1511 and the second clamping plate 1512 clamp the limit plate 152. In the second sub-state, the connecting tube 153 drives the connecting assembly 140 to rotate through threaded cooperation, so that the test assembly 120 detects the motor 160 under test.
[0051] In some embodiments, the limiting member 151 further includes a first thrust bearing 154 and a second thrust bearing 155 .
[0052] The first thrust bearing 154 is disposed on the connecting assembly 140 and is located between the first clamping plate 1511 and the flange 144, and the second thrust bearing 155 is disposed on the connecting assembly 140 and is located between the second clamping plate 1512 and the connecting cylinder 153. Figure 5-Figure 8 As shown, the first thrust bearing 154 is passed through the third section 143 and is located between the first clamping plate 1511 and the flange 144, and the second thrust bearing 155 is passed through the third section 143 and is located between the second clamping plate 1512 and the connecting tube 153. Thus, in the second sub-state, when the first clamping plate 1511 and the second clamping plate 1512 clamp the limit plate 152, the motor 160 under test continues to rotate. Due to the arrangement of the first thrust bearing 154 and the second thrust bearing 155, the motor 160 under test can drive the connecting assembly 140 to rotate through the connecting tube 153.
[0053] In some embodiments, the limiting member 151 further includes a limiting sleeve 156, the limiting sleeve 156 is inserted into the limiting groove 1521 and the other end of the connecting assembly 140 is inserted into the limiting sleeve 156, the first clamping plate 1511 is connected to the limiting sleeve 156, and the second clamping plate 1512 is inserted into the limiting sleeve 156 and relative to the limiting sleeve 156 along the axial direction of the limiting sleeve 156 (such as Figure 1 Specifically, as shown in the left and right directions Figure 5-Figure 8 As shown, the limit sleeve 156 is a horizontal sleeve extending in the left and right directions. The limit sleeve 156 is inserted into the outer circumferential surface of the third section 143 and is located in the limit groove 1521. The left end of the limit sleeve 156 is integrally formed with the first clamping plate 1511, and the second clamping plate 1512 is inserted into the right end portion of the limit sleeve 156 and can be moved on the limit sleeve 156 along the left and right directions. Therefore, in the second state, the third section 143 can rotate in the limit sleeve 156 to prevent the third section 143 from wearing against the inner circumferential surface of the limit groove 1521 when rotating, thereby extending the service life of the limit groove 1521.
[0054] According to the following Figure 1-Figure 8 The bidirectional multi-purpose dynamometer 100 according to the embodiment of the present invention is specifically described as follows:
[0055] When the bidirectional multi-purpose dynamometer 100 is installed, the motor 160 to be tested is placed on the upper end of the mounting seat 131, and the output shaft of the motor 160 to be tested is fixedly connected to the connecting sleeve 161 by a pin. The connecting sleeve 161 can be divided into a first part and a second part detachably along the up and down directions from the position of the slide bar groove. A part of the slide bar groove is located in the first part, and another part of the slide bar groove is located in the second part. The first part and the second part are closed (for example, by clamping, bonding, etc.) so that the slide bar of the connecting tube 153 can be inserted into the slide bar groove, and the slide bar groove is slidably connected to the slide bar, so that the output shaft of the motor 160 to be tested is connected to the connecting tube 153 through the connecting sleeve 161;
[0056] The first thrust bearing 154 and the limiting sleeve 156 are sleeved on the third section 143, and then the limiting sleeve 156 is inserted into the limiting groove 1521, and then the second clamping plate 1512 and the second thrust bearing 155 are sleeved on the third section 143, and the internal thread of the connecting tube 153 is threadedly matched with the external thread 1431 of the third section 143 to complete the installation. After the test is completed, it is only necessary to remove the shaft pin between the output shaft of the motor 160 under test and the connecting sleeve 161 to complete the removal. The second section 142 is set to be retractable, and the length of the second section 142 is adjusted so that the connecting assembly 140 is connected to the motor 160 under test through the limiting member 151;
[0057] Before work, since the height of the output shaft of the measured motor 160 is also different, it is only necessary to adjust the measured motor 160 to slide along the slide rail 133 to align the output shaft with the trajectory of the limit groove 1521, and the output shaft of the measured motor 160 and the connecting sleeve 161 are connected and fixed with pins, and the mounting piece 132 is screwed into the mounting hole 1311 to fix the position of the measured motor 160.
[0058] When the motor 160 under test is started, since the trajectory of each limit slot 1521 is fixed, the bending angles between the first section 141, the second section 142 and the third section 143 are also fixed, and therefore the momentum loss generated by each limit slot 1521 during transmission is also fixed, so the loss generated by the connecting assembly 140 can be calculated;
[0059] After starting work, the motor 160 under test rotates forward, driving the connecting sleeve 161 and the connecting cylinder 153 that rotates synchronously therewith to rotate, and the connecting cylinder 153 moves to the left along the third section 143 to press the second thrust bearing 155 and the second clamping plate 1512 until the first clamping plate 1511 and the second clamping plate 1512 clamp the limit plate 152, so that the friction force between the first clamping plate 1511 and the second clamping plate 1512 and the limit plate 152 is large enough to make the connecting cylinder 153 drive the third section 143 to rotate, thereby driving the connecting assembly 140 to rotate, and then driving the dynamometer to rotate through the connecting assembly 140 for detection.
[0060] After the test is completed, the motor 160 to be tested quickly reverses, driving the connection tube 153 to quickly reverse, thereby loosening the connection tube 153, so that the connection limit assembly 150 can be automatically locked and unlocked on the limit plate 152.
[0061] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0062] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.
Claims
1. A bidirectional multi-purpose dynamometer, characterized in that: include: A mounting frame (110); A test assembly (120), the test assembly (120) being arranged on the mounting frame (110), one end of the test assembly (120) being suitable for being connected to an inertia box and a reduction box so as to perform whole vehicle inertia simulation; A mounting assembly (130), the mounting assembly (130) comprising a mounting seat (131) and a mounting component (132), the mounting seat (131) being arranged on the mounting frame (110) and being spaced apart from the other end of the test assembly (120), the mounting seat (131) being suitable for mounting a motor (160) to be tested, the position of the motor (160) to be tested being adjustable relative to the mounting seat (131) along the width direction of the mounting frame (110), the mounting component (132) being passed through the motor (160) to be tested and being connected to the mounting seat (131); a connecting assembly (140), the connecting assembly (140) being arranged on the mounting frame (110) and being located between the testing assembly (120) and the mounting assembly (130), one end of the connecting assembly (140) being rotatably connected to the other end of the testing assembly (120); A limit assembly (150), the limit assembly (150) comprising a limit piece (151) and a limit plate (152), the limit plate (152) being arranged on the mounting frame (110) and being located between the test assembly (120) and the mounting assembly (130), the limit plate (152) being provided with a limit groove (1521) penetrating the limit assembly (150) along the length direction of the mounting frame (110), in a projection plane orthogonal to the length direction of the mounting frame (110), the limit groove (1521) being in an arc shape and the center of the limit groove (1521) being coincident with the rotation center of one end of the connecting assembly (140), the limit piece (151) being arranged in the limit groove The dynamometer has a first state and a second state. In the first state, the limit member (151) slides in the limit member slot (1521) so that the limit member (151) and the output shaft of the motor (160) under test are at the same height. The motor (160) under test moves on the mounting seat (131) so that the two ends of the limit member (151) are respectively connected to the other end of the connecting assembly (140) and the output shaft of the motor (160) under test. In the second state, the limit member (151) is fixed in the limit member slot (1521) and the motor (160) under test drives the connecting assembly (140) to rotate through the limit member (151).
2. The bidirectional multi-purpose dynamometer according to claim 1, characterized in that: There are a plurality of limit grooves (1521), and in a projection plane orthogonal to the length direction of the mounting frame (110), the plurality of limit grooves (1521) are all arc-shaped and the centers of the plurality of limit grooves (1521) coincide with the rotation center of one end of the connecting component (140). The plurality of limit grooves (1521) are arranged in sequence and spaced apart from each other along the middle of the limit plate (152) toward the edge of the limit plate (152), and the limit member (151) can be inserted into one of the plurality of limit grooves (1521).
3. The bidirectional multi-purpose dynamometer according to claim 2, characterized in that: The two ends of the limiting groove (1521) are respectively arranged opposite to each other in the up-down direction, and the central angle of the limiting groove (1521) is not less than 180°, and two adjacent limiting grooves (1521) are connected to each other.
4. The bidirectional multi-purpose dynamometer according to claim 1, characterized in that: The connecting assembly (140) comprises a first section (141), a second section (142) and a third section (143) which are connected in sequence; the second section (142) and the first section (141) and the second section (142) and the third section (143) are connected via a universal joint (145); the first section (141) is rotatably connected to the test assembly (120); in a projection plane orthogonal to the length direction of the mounting frame (110), the center of the limiting groove (1521) coincides with the rotation center of the first section (141); the second section (142) is a telescopic member, and the second section (142) is extended or shortened along its axial direction.
5. The bidirectional multi-purpose dynamometer according to claim 1, characterized in that: The mounting seat (131) is provided with a plurality of mounting holes (1311) arranged at intervals along the width direction of the mounting frame (110); the mounting holes (1311) penetrate the mounting seat (131) along the height direction of the mounting seat (131); the motor (160) to be tested is arranged on the mounting seat (131) and the mounting member (132) passes through the motor (160) to be tested and is arranged in the mounting holes (1311), so that the motor (160) to be tested is mounted on the mounting seat (131) through the mounting member (132).
6. The bidirectional multi-purpose dynamometer according to claim 1, characterized in that: The mounting assembly (130) further comprises a slide rail (133), wherein the slide rail (133) is arranged on the mounting seat (131) and extends along the width direction of the mounting frame (110), so that the motor (160) under test can move on the mounting seat (131) via the slide rail (133).
7. The bidirectional multi-purpose dynamometer according to claim 1, characterized in that: The limiting member (151) comprises: A first clamping plate (1511) and a second clamping plate (1512), wherein the first clamping plate (1511) and the second clamping plate (1512) are respectively arranged on both sides of the limiting groove (1521), and the other end of the connecting component (140) passes through the first clamping plate (1511) and is arranged in the second clamping plate (1512), and a flange (144) is provided on the connecting component (140), and the flange (144) abuts against the first clamping plate (1511), so that the connecting component (140) drives the first clamping plate (1511) to move; A connecting tube (153), one end of which is arranged on a side of the second clamping plate (1512) away from the first clamping plate (1511) and is suitable for being connected to the output shaft of the motor (160) under test, the other end of which is passed through the other end of the connecting assembly (140), the inner circumference of the connecting tube (153) and the outer circumference of the connecting assembly (140) being matched, the second state comprising a first sub-state and a second sub-state, in the first sub-state, the motor (160) under test drives the connecting tube (153) to rotate, the connecting tube (153) moves toward the direction adjacent to the second clamping plate (1512) to drive the first clamping plate (1511) and the second clamping plate (1512) to clamp the limit plate (152), in the second sub-state, the motor (160) under test drives the connecting assembly (140) to rotate through the connecting tube (153).
8. The bidirectional multi-purpose dynamometer according to claim 7, characterized in that: The limiting member (151) further comprises: A first thrust bearing (154), the first thrust bearing (154) being disposed on the connecting assembly (140) and being located between the first clamping plate (1511) and the flange (144); A second thrust bearing (155), the second thrust bearing (155) is disposed on the connecting assembly (140) and is located between the second clamping plate (1512) and the connecting cylinder (153).
9. The bidirectional multi-purpose dynamometer according to claim 7, characterized in that: The outer circumference of the other end of the connecting component (140) is provided with an external thread (1431), and the inner circumference of the other end of the connecting tube (153) is provided with an internal thread. The connecting component (140) and the connecting tube (153) are matched by threads. In a first state, the connecting tube (153) drives the connecting component (140) to move so that the first clamping plate (1511) and the second clamping plate (1512) clamp the limit plate (152). In the second state, the connecting tube (153) drives the connecting component (140) to rotate.
10. The bidirectional multi-purpose dynamometer according to claim 7, characterized in that: The limiting member (151) further comprises a limiting sleeve (156), wherein the limiting sleeve (156) is inserted into the limiting groove (1521) and the other end of the connecting assembly (140) is inserted into the limiting sleeve (156), the first clamping plate (1511) is connected to the limiting sleeve (156), and the second clamping plate (1512) is inserted into the limiting sleeve (156) and is movable relative to the limiting sleeve (156) along the axial direction of the limiting sleeve (156).