An adjustable detection tooling capable of adapting to various sizes of motors

Abstract

This utility model discloses an adjustable testing fixture adaptable to motors of various sizes, comprising: a testing platform, an adjustment component, and an upper fixing frame. The adjustment component is adjusted by sliding a first T-head screw within a first T-slot on the testing platform until the symmetrical planes of the two right-angled trapezoidal adjustment blocks of the adjustment component coincide with the test axis of the testing equipment. Then, rotating the rotary handwheel drives the lead screw to rotate, causing the positive and negative thread nuts on the lead screw to move in opposite directions. This moves the motor under test, placed between the two right-angled trapezoidal adjustment blocks, in a first direction, thereby changing the axial height of the drive shaft of the motor under test until it is aligned with the test axis of the testing equipment. This allows for adjustment of the axial height of the drive shaft of the motor under test without changing the testing fixture when testing motors of different sizes, until the drive shaft of the motor under test is coaxial with the test axis of the testing equipment, thus improving efficiency.

Description

Technical Field

[0001] This utility model relates to the field of motor testing fixture technology, and more specifically, to an adjustable testing fixture that can be adapted to motors of various sizes. Background Technology

[0002] Electric motors, as power sources that provide driving torque for electrical appliances and various machines, have wide applications in daily life and industrial production.

[0003] With the advancement of technology, the demand for different types and performance levels of motors is constantly increasing. In this process, motor testing has become an essential step.

[0004] Most motor testing projects require alignment between the test shaft of the testing equipment and the drive shaft of the motor under test. However, due to the limited variety of testing equipment and the diverse sizes of the motors under test, frequent changes of testing fixtures are necessary to achieve coaxial alignment between the test shaft of the testing equipment and the drive shaft of the motor under test when dealing with the actual testing of multiple models and sizes of motors, resulting in low efficiency. Utility Model Content

[0005] This invention provides an adjustable testing fixture adaptable to motors of various sizes, eliminating the need for frequent fixture changes to ensure coaxiality between the test shaft of the testing equipment and the drive shaft of the motor under test, thus improving efficiency. The specific technical solution is as follows:

[0006] Firstly, this utility model provides an adjustable testing fixture adaptable to motors of various sizes, comprising:

[0007] The test platform has at least two first T-slots on one side surface along a first direction, each first T-slot extending along a second direction, and the first T-slots being equally spaced along a third direction.

[0008] The adjustment assembly includes a fixed base, a lead screw and nut mechanism, two sets of linear guide rail slider mechanisms, two right-angled trapezoidal adjustment blocks, and a rotary handwheel. The lead screw and nut mechanism includes a lead screw and a positive-tooth lead screw and nut assembly and a negative-tooth lead screw and nut assembly mounted on the lead screw. Each set of linear guide rail slider mechanisms includes a linear guide rail and two sliders slidably mounted on the linear guide rail. The positive-tooth lead screw and nut assembly and the negative-tooth lead screw and nut assembly can slide in opposite directions on the lead screw.

[0009] The fixed base is positioned in the two first T-slots of the test platform by two sets of first T-head screws. When both sets of first T-head screws are in the loose state, they can slide along the first T-slots. The two sets of first T-head screws can slide to multiple sliding positions. When the two sets of first T-head screws slide to the sliding position, the two sets of first T-head screws are tightened. The test axis of the test equipment is located on the symmetrical plane of the two right-angled trapezoidal adjustment blocks.

[0010] The screw and nut mechanism is provided at the middle of one side surface of the fixed base along the first direction and along the second direction, and the two sets of linear guide slider mechanisms are symmetrically arranged on both sides of the screw and nut mechanism.

[0011] The surfaces of two sliders on the two linear guides near the spur screw nut assembly that are away from the test platform and the surfaces of the spur screw nut assembly that are away from the test platform are both mounted on the surface of the right-angled waist of one of the two right-angled trapezoidal adjusting blocks. The surfaces of the other two sliders on the linear guides near the reverse screw nut assembly that are away from the test platform and the surfaces of the reverse screw nut assembly that are away from the test platform are both mounted on the surface of the right-angled waist of the other of the two right-angled trapezoidal adjusting blocks. The two right-angled trapezoidal adjusting blocks extend along the third direction, and the surfaces of the inclined waists of the two right-angled trapezoidal adjusting blocks are arranged opposite each other to form a V-shaped structure.

[0012] The rotating handwheel is fixedly installed at one end of the lead screw. The rotating handwheel can be rotated to multiple adjustment positions. When the rotating handwheel is rotated to the adjustment position, the end of the motor under test close to the test platform abuts against the inclined surface of the two right-angled trapezoidal adjustment blocks respectively. The drive shaft of the motor under test extends along the third direction and is located on the same straight line as the test shaft.

[0013] An upper fixing frame is provided, with one end of the upper fixing frame along the first direction mounted on the adjustment assembly, and the inner surface of the other end of the upper fixing frame along the first direction abutting against the end of the motor under test away from the test platform and pressing the motor under test against the test platform.

[0014] Wherein, the first direction, the second direction, and the third direction are all perpendicular to each other.

[0015] Optionally, the positive lead screw nut assembly includes a positive lead screw nut and a positive lead screw nut fixing block, and the negative lead screw nut assembly includes a negative lead screw nut and a negative lead screw nut fixing block;

[0016] The screw is provided in the middle of one side surface of the fixed seat along the first direction and along the second direction. The positive thread screw nut and the negative thread screw nut are threaded on the screw. The positive thread screw nut fixing block is installed on the positive thread screw nut and the negative thread screw nut fixing block is installed on the negative thread screw nut.

[0017] The surface of the positive thread screw nut fixing block away from the test platform is mounted on the surface of the right angle of one of the two right-angled trapezoidal adjusting blocks, and the surface of the negative thread screw nut fixing block away from the test platform is mounted on the surface of the right angle of the other of the two right-angled trapezoidal adjusting blocks.

[0018] Optionally, the spur screw nut consists of a first nut head and a first nut rod connected to each other.

[0019] The reverse-tooth lead screw nut consists of a second nut head and a second nut rod that are connected to each other.

[0020] The lead screw nut fixing block is provided with a first through hole along the second direction, the first nut rod passes through the first through hole, and the first nut head is located outside the first through hole and is fixedly installed on the lead screw nut fixing block.

[0021] The reverse-tooth screw nut fixing block is provided with a second through hole along the second direction, the second nut rod passes through the second through hole, the second nut head is located outside the second through hole and is fixedly installed on the reverse-tooth screw nut fixing block, and the first nut rod and the second nut rod are arranged opposite to each other.

[0022] Optionally, the adjustment assembly further includes a lead screw fixing seat and a lead screw transmission seat;

[0023] One end of the lead screw passes through a third through hole provided in the lead screw drive seat along the second direction, and the lead screw drive seat is mounted on the fixed seat on one side surface along the first direction. The lead screw fixed seat is mounted on the other end of the lead screw, and the lead screw fixed seat is mounted on the fixed seat on one side surface along the first direction. The positive thread lead screw nut assembly and the negative thread lead screw nut assembly are disposed between the lead screw fixed seat and the lead screw drive seat.

[0024] Optionally, the fixed seat has two stepped bosses on both sides of the middle of one side surface along the first direction, the lead screw is disposed between the two stepped bosses, the lead screw fixed seat is mounted on one side surface along the first direction of the fixed seat located between the two stepped bosses, and the lead screw transmission seat is mounted on one side surface along the first direction of the fixed seat located between the two stepped bosses.

[0025] Two linear guides are respectively mounted on two stepped bosses.

[0026] Optionally, the upper fixing frame includes a motor fixing housing and two fixing plates;

[0027] The motor mounting housing is an arched housing structure with openings at both ends along the third direction and one end along the first direction.

[0028] The two sides of the motor mounting housing along the opening in the first direction are respectively fixedly connected to the adjustment assembly by a fixing plate, and the inner surface of the motor mounting housing along the first direction abuts against the end of the motor under test away from the test platform.

[0029] Optionally, the fixing seat has two sets of second T-slots on one side surface along the first direction. Each set of second T-slots includes two second T-slots symmetrically arranged on both sides of the lead screw, and the two second T-slots in each set are located on the outside of the corresponding linear guide.

[0030] Both fixing plates extend along the third direction. Each fixing plate is provided with a set of first threaded holes. The two sets of first threaded holes correspond to two sets of second T-slots. Each set of first threaded holes includes two first threaded holes. The fixing plates are fixedly connected to the fixing base through the first threaded holes, the second T-slots, and the second T-head screws.

[0031] Optionally, the motor mounting housing has a boss on its inner surface along the first direction, and the boss abuts against the end of the motor under test away from the test platform.

[0032] Optionally, when the rotary handwheel is rotated to the adjustment position, the positive thread screw nut assembly and the negative thread screw nut assembly are symmetrically arranged with respect to the center line of the screw along the first direction.

[0033] Optionally, each group of first T-head screws includes at least two first T-head screws.

[0034] As described above, the adjustable testing fixture adapted to motors of various sizes provided in this embodiment includes: a testing platform, an adjustment component, and an upper fixed frame. The testing platform has at least two first T-slots on one side surface along a first direction, each first T-slot extending along a second direction, with equal spacing between them along a third direction. The adjustment component includes a fixed seat, a lead screw and nut mechanism, two sets of linear guide rail slider mechanisms, two right-angled trapezoidal adjustment blocks, and a rotary handwheel. The lead screw and nut mechanism includes a lead screw and a positive-thread lead screw and nut assembly and a negative-thread lead screw and nut assembly mounted on the lead screw. Each set of linear guide rail slider mechanisms includes a linear guide rail and two sliders slidably mounted on the linear guide rail. The positive-thread lead screw and nut assembly and the negative-thread lead screw and nut assembly can slide in opposite directions on the lead screw. The fixed seat is positioned within the two first T-slots of the testing platform by two sets of first T-head screws, and both sets of first T-head screws are in an un-positioned position. When tightened, the screws can slide along the first T-slot. The two sets of first T-head screws can slide to multiple sliding positions. When the two sets of first T-head screws slide to the sliding position, the two sets of first T-head screws are tightened. The test axis of the test equipment is located on the symmetrical plane of the two right-angled trapezoidal adjusting blocks. A screw and nut mechanism is provided in the middle of one side surface of the fixed seat along the first direction and along the second direction. Two sets of linear guide slider mechanisms are symmetrically arranged on both sides of the screw and nut mechanism. The two sliders on the two linear guides near the spur screw and nut assembly have their surfaces away from the test platform and are connected to the spur screw and nut screw. The surface of the mother component furthest from the test platform is mounted on the right-angled side surface of one of the two right-angled trapezoidal adjusting blocks. The other two sliders on the linear guide near the reverse-thread screw nut assembly are also mounted on the right-angled side surface of the other of the two right-angled trapezoidal adjusting blocks, just as the surface of the reverse-thread screw nut assembly furthest from the test platform is mounted on the right-angled side surface of the other right-angled trapezoidal adjusting block. Both right-angled trapezoidal adjusting blocks extend along a third direction, and their inclined sides are arranged opposite each other to form a V-shape. A rotating handwheel is fixedly mounted at one end of the screw. The handwheel can be rotated to multiple adjustment positions. When the handwheel is rotated to an adjustment position, the end of the motor under test near the test platform abuts against the inclined surfaces of the two right-angled trapezoidal adjustment blocks. The drive shaft of the motor under test extends along a third direction and is on the same straight line as the test shaft of the test equipment. One end of the upper fixed frame along the first direction is installed on the adjustment assembly. The inner surface of the other end of the upper fixed frame along the first direction abuts against the end of the motor under test away from the test platform and presses the motor under test against the test platform. The first direction, the second direction, and the third direction are perpendicular to each other.Therefore, by sliding the first T-head screw within the first T-slot of the test platform, the adjustment assembly is adjusted until the symmetrical planes of the two right-angled trapezoidal adjustment blocks of the adjustment assembly coincide with the test axis of the test equipment. Then, by rotating the rotary handwheel, the lead screw is rotated, and subsequently, the positive and negative thread lead screw nuts on the lead screw move in opposite directions. The motor under test, placed between the two right-angled trapezoidal adjustment blocks, moves in the first direction, thereby changing the axial height of the drive shaft of the motor under test until the drive shaft of the motor under test is aligned with the test axis of the test equipment. This allows for the adjustment of the axial height of the drive shaft of the motor under test without changing the test fixture when testing motors of different sizes, thus improving efficiency.

[0035] The innovative aspects of this utility model embodiment include:

[0036] 1. The adjustment assembly is adjusted by sliding the first T-head screw within the first T-slot of the test platform until the symmetrical planes of the two right-angled trapezoidal adjustment blocks of the adjustment assembly coincide with the test axis of the test equipment. Then, by rotating the rotary handwheel, the lead screw is rotated, and the positive and negative thread lead screw nuts on the lead screw move in opposite directions. The motor under test, placed between the two right-angled trapezoidal adjustment blocks, moves in the first direction, thereby changing the axial height of the drive shaft of the motor under test until the drive shaft of the motor under test is aligned with the test axis of the test equipment. This allows for adjustment of the axial height of the drive shaft of the motor under test without changing the test fixture when testing motors of different sizes, thus improving efficiency.

[0037] 2. The positioning adjustment of the adjustment component in the second direction is achieved by the cooperation of the first T-head screw and the first T-slot.

[0038] 3. By setting the first nut rod and the second nut rod relative to each other, the positive thread screw nut and the negative thread screw nut can slide in opposite directions on the screw.

[0039] 4. The spur screw nut is installed on the spur screw nut by setting a first through hole on the spur screw nut fixing block, with the first nut rod passing through the first through hole and the first nut head located outside the first through hole and fixedly installed on the spur screw nut fixing block. The reverse screw nut fixing block is installed on the reverse screw nut by setting a second through hole on the reverse screw nut fixing block, with the second nut rod passing through the second through hole and the second nut head located outside the second through hole and fixedly installed on the reverse screw nut fixing block.

[0040] 5. The positive and negative lead screw nut assemblies can respectively drive two right-angled trapezoidal adjusting blocks to slide in opposite directions on two linear guides via two corresponding sliders.

[0041] 6. By fixing the positive thread screw nut fixing block to one of the two right-angle trapezoidal adjusting blocks and the negative thread screw nut fixing block to the other of the two right-angle trapezoidal adjusting blocks, the positive thread screw nut and the negative thread screw nut can drive the two right-angle trapezoidal adjusting blocks to slide in opposite directions respectively.

[0042] 7. By setting the positive and negative thread screw nut assemblies to be symmetrically arranged along the center line of the screw in the first direction when the handwheel is rotated to the adjustment position, the positive and negative thread screw nut assemblies can be located in the middle position of the screw, so that the movable distance of the two is the same, minimizing the length of the screw and reducing costs.

[0043] 8. The lead screw is fixedly installed on the fixed seat by setting a lead screw fixing seat and a lead screw transmission seat.

[0044] 9. By setting two stepped bosses, the two linear guides are respectively installed on the two stepped bosses, which reduces the weight and improves the stability.

[0045] 10. The motor mounting housing is fixedly connected to the adjustment assembly through two fixing plates. At the same time, the V-shaped structure formed by the internal surface of the motor mounting housing along the first direction and the inclined waist surfaces of the two right-angled trapezoidal adjustment blocks presses the motor under test onto the adjustment assembly, thereby fixing the motor under test and ensuring the stability of the motor under test during the test.

[0046] 11. By setting a boss on the inner surface of the motor mounting housing along the first direction, the motor under test is pressed onto the adjustment component to ensure the stability of the motor under test during the test.

[0047] Of course, implementing any product or method of this utility model does not necessarily require achieving all of the advantages described above at the same time. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0049] Figure 1 A schematic diagram of a structure of an adjustable detection fixture that can be adapted to motors of various sizes, provided for an embodiment of this utility model;

[0050] Figure 2 A schematic diagram of the structure of the adjustment component provided in an embodiment of this utility model;

[0051] Figure 3 A cross-sectional view of the adjustment component provided in an embodiment of this utility model;

[0052] Figure 4 This is a schematic diagram of the structure of the fixing base provided in an embodiment of the present utility model.

[0053] Figures 1-4 In the middle, 1 test platform, 11 first T-slot, 2 adjustment component, 21 fixed seat, 211 stepped boss, 212 second T-slot, 22 right-angled trapezoidal adjustment block, 221 surface of inclined waist, 23 rotating handwheel, 24 lead screw, 25 linear guide rail, 26 slider, 271 positive thread lead screw nut, 2711 first nut head, 2712 first nut rod, 281 negative thread lead screw nut, 2811 second nut head, 2812 second nut rod, 272 positive thread lead screw nut fixing block, 282 negative thread lead screw nut fixing block, 291 lead screw fixing seat, 292 lead screw transmission seat, 3 upper fixing frame, 31 motor fixing shell, 311 boss, 32 fixing plate, 4 first T-head screw, 5 motor under test, 51 drive shaft, 6 second T-head screw. Detailed Implementation

[0054] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0055] It should be noted that the terms "comprising" and "having," and any variations thereof, in the embodiments and drawings of this utility model are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0056] This utility model discloses an adjustable testing fixture that can be adapted to motors of various sizes. It eliminates the need for frequent fixture changes to ensure the test shaft of the testing equipment is coaxial with the drive shaft of the motor under test, thus improving efficiency. The following is a detailed description of this utility model embodiment.

[0057] Figure 1This is a schematic diagram of an adjustable testing fixture that can be adapted to motors of various sizes, provided as an embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of an adjustment component provided in an embodiment of the present utility model. Figure 3 A cross-sectional view of the adjustment component provided in an embodiment of this utility model.

[0058] See Figure 1 The adjustable testing fixture that can be adapted to motors of various sizes provided in this embodiment includes: a test platform 1, an adjustment component 2, and an upper fixing frame 3.

[0059] Test platform 1 is located at the bottom of the adjustable testing fixture that can accommodate motors of various sizes. Adjustment component 2 is installed on test platform 1. Upper fixing frame 3 is located at the top of the adjustable testing fixture that can accommodate motors of various sizes and is fixedly connected to adjustment component 2.

[0060] Specifically, the test platform 1 is a T-slot platform. At least two first T-slots 11 are provided on one surface of the test platform 1 along a first direction. Each first T-slot 11 extends along a second direction, and the first T-slots 11 are evenly spaced along a third direction. For example, the number of first T-slots 11 is five, and the length of each first T-slot 11 in the second direction is the same as the length of the test platform 1 in the second direction.

[0061] In this application, the first direction is perpendicular to the ground, and the third direction is the axial direction of the test axis of the test equipment, and the first direction, the second direction, and the third direction are all perpendicular to each other. However, it should be noted that "perpendicular" in this application is not absolutely perpendicular, but can be 90°±10°. Similarly, "parallel" in this application is not absolutely parallel, but can be 180°±10°.

[0062] See also Figure 2 The adjustment assembly 2 includes a fixed base 21, a lead screw and nut mechanism, two sets of linear guide rail slider mechanisms, two right-angled trapezoidal adjustment blocks 22, and a rotating handwheel 23. The lead screw and nut mechanism includes a lead screw 24 and a positive-tooth lead screw and nut assembly and a negative-tooth lead screw and nut assembly mounted on the lead screw 24. Each set of linear guide rail slider mechanisms includes a linear guide rail 25 and two sliders 26 slidably mounted on the linear guide rail 25.

[0063] See also Figure 1The fixing seat 21 is positioned within the two first T-slots 11 of the test platform 1 by two sets of first T-head screws. When both sets of first T-head screws are loose, they can slide along the first T-slots 11. The two sets of first T-head screws can slide to multiple sliding positions. When the two sets of first T-head screws reach a sliding position, they are tightened. The test axis of the test equipment is located on the symmetrical plane of the two right-angled trapezoidal adjusting blocks 22. Each set of first T-head screws includes at least two first T-head screws 4, and the two right-angled trapezoidal adjusting blocks 22 are symmetrical about the symmetrical plane, which is a virtual plane.

[0064] Thus, the positioning adjustment of the adjustment component 2 in the second direction is achieved through the cooperation of the first T-head screw and the first T-slot 11.

[0065] See also Figure 1 A lead screw and nut mechanism is provided on the middle of one side surface of the fixed base 21 along the first direction and along the second direction. Two sets of linear guide slider mechanisms are symmetrically arranged on both sides of the lead screw and nut mechanism. The positive thread lead screw and nut assembly and the negative thread lead screw and nut assembly can slide in opposite directions on the lead screw 24. Reverse sliding means that the sliding directions of the positive thread lead screw and nut assembly are opposite. For example, if the positive thread lead screw and nut assembly slides to the left, the negative thread lead screw and nut assembly slides to the right.

[0066] See also Figure 2 and Figure 3 The positive lead screw nut assembly includes a positive lead screw nut 271 and a positive lead screw nut fixing block 272, while the negative lead screw nut assembly includes a negative lead screw nut 281 and a negative lead screw nut fixing block 282.

[0067] A lead screw 24 is provided on the middle of one side surface of the fixed base 21 along the first direction and along the second direction. A positive thread lead screw nut 271 and a negative thread lead screw nut 281 are threaded onto the lead screw 24. A positive thread lead screw nut fixing block 272 is installed on the positive thread lead screw nut 271 and a negative thread lead screw nut fixing block 282 is installed on the negative thread lead screw nut 281.

[0068] See also Figure 3 The positive thread screw nut 271 is composed of a first nut head 2711 and a first nut rod 2712 connected to each other, and the negative thread screw nut 281 is composed of a second nut head 2811 and a second nut rod 2812 connected to each other.

[0069] In order to achieve reverse sliding, the positive thread screw nut 271 and the negative thread screw nut 281 are symmetrically threaded on the screw 24. Symmetry means that the first nut rod 2712 and the second nut rod 2812 are set opposite to each other.

[0070] Thus, by setting the first nut rod 2712 and the second nut rod 2812 opposite to each other, the positive thread screw nut 271 and the negative thread screw nut 281 can slide in opposite directions on the screw 24.

[0071] The method by which the spur screw nut fixing block 272 is installed on the spur screw nut 271 can be as follows:

[0072] The lead screw nut fixing block 272 is provided with a first through hole along the second direction, the first nut rod 2712 passes through the first through hole, and the first nut head 2711 is located outside the first through hole and is fixedly installed on the lead screw nut fixing block 272. The fixed installation method can be screw installation.

[0073] The reverse thread screw nut fixing block 282 can be installed on the reverse thread screw nut 281 in the following ways:

[0074] The reverse thread screw nut fixing block 282 is provided with a second through hole along the second direction, the second nut rod 2812 passes through the second through hole, and the second nut head 2811 is located outside the second through hole and is fixedly installed on the reverse thread screw nut fixing block 282. The fixed installation method can be screw installation.

[0075] Therefore, by providing a first through hole on the spur screw nut fixing block 272, with the first nut rod 2712 passing through the first through hole and the first nut head 2711 located outside the first through hole and fixedly installed on the spur screw nut fixing block 272, the spur screw nut 271 is installed on the spur screw nut 271. By providing a second through hole on the reverse screw nut fixing block 282, with the second nut rod 2812 passing through the second through hole and the second nut head 2811 located outside the second through hole and fixedly installed on the reverse screw nut fixing block 282, the reverse screw nut fixing block 282 is installed on the reverse screw nut 281.

[0076] See also Figure 2The surfaces of the two sliders 26 on the two linear guides 25 near the spur screw nut assembly that are away from the test platform 1 and the surfaces of the spur screw nut assembly that are away from the test platform 1 are both mounted on the surface of the right-angled waist of one of the two right-angled trapezoidal adjusting blocks 22. The surfaces of the other two sliders 26 on the linear guides 25 near the reverse screw nut assembly that are away from the test platform 1 and the surfaces of the reverse screw nut assembly that are away from the test platform 1 are both mounted on the surface of the right-angled waist of the other of the two right-angled trapezoidal adjusting blocks 22. The two right-angled trapezoidal adjusting blocks 22 extend along a third direction, and the surfaces 221 of the inclined waists of the two right-angled trapezoidal adjusting blocks 22 are arranged opposite each other to form a V-shaped structure. The right-angled trapezoidal adjusting block 22 is a block structure with a right-angled trapezoidal cross-section. The surface of the right-angled waist is the surface of the right-angled waist of the cross-section, and the surface 221 of the inclined waist is the surface of the inclined waist of the cross-section.

[0077] In other words, the upper surfaces of the spur screw nut assembly and the two nearby sliders are fixedly connected to the lower surface of one of the two right-angled trapezoidal adjusting blocks 22, and the upper surfaces of the reverse screw nut assembly and the two nearby sliders are fixedly connected to the lower surface of the other of the two right-angled trapezoidal adjusting blocks 22. Therefore, the spur screw nut assembly and the reverse screw nut assembly can respectively drive the two right-angled trapezoidal adjusting blocks 22 to slide in opposite directions on the two linear guides 25 via the two corresponding sliders 26.

[0078] Specifically, the surface of the positive thread screw nut fixing block 272 away from the test platform 1 is mounted on the surface of the right angle of one of the two right-angled trapezoidal adjusting blocks 22, and the surface of the negative thread screw nut fixing block 282 away from the test platform 1 is mounted on the surface of the right angle of the other of the two right-angled trapezoidal adjusting blocks 22. The mounting method can be screw mounting.

[0079] Thus, by fixing the positive lead screw nut fixing block 272 to one of the two right-angled trapezoidal adjusting blocks 22, and fixing the negative lead screw nut fixing block 282 to the other of the two right-angled trapezoidal adjusting blocks 22, the positive lead screw nut 271 and the negative lead screw nut 281 respectively drive the two right-angled trapezoidal adjusting blocks 22 to slide in opposite directions.

[0080] See also Figure 2 The rotating handwheel 23 is fixedly installed at one end of the lead screw 24. The rotating handwheel 23 can rotate to multiple adjustment positions. When the rotating handwheel 23 is rotated to an adjustment position, the end of the motor under test 5 near the test platform abuts against the inclined surface 221 of the two right-angled trapezoidal adjustment blocks 22. The drive shaft 51 of the motor under test 5 extends along a third direction and is on the same straight line as the test shaft of the test equipment. The fixed installation can be achieved by screw connection.

[0081] In other words, the motor under test 5 is clamped between the inclined surfaces 221 of the two right-angled trapezoidal adjustment blocks 22. By rotating the rotary handwheel 23 to multiple adjustment positions, the positive and negative lead screw nut assemblies can respectively drive the two right-angled trapezoidal adjustment blocks 22 to slide in opposite directions on the two linear guide rails 25 through the two corresponding sliders 26, thereby adjusting the movement of the motor under test 5 in the first direction and changing the axial height of the drive shaft 51 of the motor under test 5.

[0082] When the handwheel 23 is rotated to the adjustment position, the positive thread screw nut assembly and the negative thread screw nut assembly are symmetrically arranged with respect to the center line of the screw 24 along the first direction.

[0083] Therefore, by setting the positive and negative lead screw nut assemblies symmetrically arranged along the centerline of the lead screw 24 in the first direction when the handwheel 23 is rotated to the adjustment position, the positive and negative lead screw nut assemblies can be located in the middle position of the lead screw 24, so that their movable distances are the same, minimizing the length of the lead screw 24 and reducing costs.

[0084] See also Figure 2 and Figure 3 The adjusting assembly 2 also includes a lead screw fixing seat 291 and a lead screw transmission seat 292.

[0085] A rotating handwheel 23 is fixedly installed at one end of a lead screw 24. One end of the lead screw 24 passes through a third through hole in the lead screw drive seat 292 along the second direction. The lead screw drive seat 292 is mounted on a fixed seat 21 on one side surface along the first direction. A lead screw fixed seat 291 is installed at the other end of the lead screw 24. The lead screw fixed seat 291 is mounted on a fixed seat 21 on one side surface along the first direction. A positive thread lead screw nut assembly and a negative thread lead screw nut assembly are disposed between the lead screw fixed seat 291 and the lead screw drive seat 292.

[0086] That is, in the second direction, a rotating handwheel 23, a lead screw drive seat 292, a positive lead screw nut assembly, a negative lead screw nut assembly, and a lead screw fixing seat 291 are arranged in sequence.

[0087] Therefore, by setting the lead screw fixing seat 291 and the lead screw transmission seat 292, the lead screw 24 is fixedly installed on the fixing seat 21.

[0088] Figure 4 See the schematic diagram of the structure of the fixing base 21 provided in the embodiment of this utility model. Figure 4The fixed base 21 has two stepped bosses 211 on both sides of the middle of one side surface along the first direction. The lead screw 24 is disposed between the two stepped bosses 211. The lead screw fixing seat 291 is mounted on the part of the fixed base 21 located between the two stepped bosses 211 along one side surface along the first direction. The lead screw transmission seat 292 is mounted on the part of the fixed base 21 located between the two stepped bosses 211 along one side surface along the first direction. Two linear guides 25 are respectively mounted on the two stepped bosses 211. The mounting method can be screw connection.

[0089] Therefore, by setting two stepped bosses 211, the two linear guides 25 are respectively installed on the two stepped bosses 211, which reduces the weight and improves the stability.

[0090] See also Figure 1 The upper fixing frame 3 is installed on the adjustment component 2 at one end along the first direction, and the inner surface of the other end of the upper fixing frame along the first direction abuts against the end of the motor under test 5 away from the test platform 1 and presses the motor under test 5 against the test platform 1. The upper fixing frame 3 has a symmetrical structure.

[0091] See also Figure 1 The upper fixing frame 3 includes a motor fixing shell 31 and two fixing plates 32.

[0092] The motor mounting housing 31 is an arched housing structure with openings at both ends along a third direction and one end along a first direction. The two sides of the motor mounting housing 31 with openings along the first direction are respectively fixedly connected to the adjustment assembly 2 by a fixing plate 32, and the inner surface of the motor mounting housing 31 along the first direction abuts against the end of the motor under test 5 away from the test platform 1.

[0093] Thus, the motor mounting housing 31 is fixedly connected to the adjustment assembly 2 through two fixing plates 32. At the same time, the V-shaped structure formed by the internal surface of the motor mounting housing 31 along the first direction and the inclined waist surface 221 of the two right-angled trapezoidal adjustment blocks 22 pressing the motor under test 5 onto the adjustment assembly 2, thereby achieving the function of fixing the motor under test 5 and ensuring the stability of the motor under test 5 during the test process.

[0094] For details, please refer to [link / reference]. Figure 1 and Figure 2 The fixed base 21 has two sets of second T-slots on one side surface along the first direction. Each set of second T-slots includes two second T-slots 212 symmetrically arranged on both sides of the lead screw 24, and the two second T-slots 212 in each set are located on the outside of the corresponding linear guide 25.

[0095] Both fixing plates 32 extend along a third direction. Each fixing plate 32 is provided with a set of first threaded holes. The two sets of first threaded holes correspond to two sets of second T-slots. Each set of first threaded holes includes two first threaded holes. The fixing plate 32 is fixedly connected to the fixing seat 21 through the first threaded holes, the second T-slots 212, and the second T-head screws 6.

[0096] See also Figure 1 The motor mounting housing 31 has a boss 311 on its inner surface along the first direction, and the boss 311 abuts against the end of the motor 5 under test away from the test platform 1.

[0097] Since the motor 5 under test is a cylinder, in order to press the motor 5 under test tightly, a boss 311 is provided on the inner surface of the motor fixing housing 31 along the first direction, and the motor 5 under test is pressed tightly by the boss 311.

[0098] Therefore, by setting a boss 311 on the inner surface of the motor mounting housing 31 along the first direction, the motor under test 5 is pressed onto the adjustment assembly 2, ensuring the stability of the motor under test 5 during the test.

[0099] The working principle of the adjustable detection fixture that can be adapted to motors of various sizes, provided in this embodiment of the present invention, is described below:

[0100] The first T-head screw slides within the first T-slot 11 of the test platform 1, adjusting the adjustment component 2 until the symmetrical planes of the two right-angled trapezoidal adjustment blocks 22 of the adjustment component 2 coincide with the test axis of the test equipment, i.e., the test axis of the test equipment is located on the symmetrical planes of the two right-angled trapezoidal adjustment blocks 22. By rotating the rotary handwheel 23, the lead screw 24 is rotated, and then the positive thread lead screw nut 271 and the negative thread lead screw nut 281 on the lead screw 24 move in opposite directions, causing the tested motor 5, which is placed between the two right-angled trapezoidal adjustment blocks 22, to move in the first direction, thereby changing the axial height of the drive shaft 51 of the tested motor 5 until the drive shaft 51 of the tested motor 5 is on the same straight line as the test axis of the test equipment.

[0101] In summary, the adjustable testing fixture adapted to various sizes of motors provided in this embodiment includes: a testing platform 1, an adjustment component 2, and an upper fixing frame 3. The testing platform 1 has at least two first T-slots 11 on one side surface along a first direction, each first T-slot 11 extending along a second direction, with equal spacing between each first T-slot 11 along a third direction. The adjustment component 2 includes a fixing seat 21, a lead screw and nut mechanism, two sets of linear guide rail slider mechanisms, two right-angled trapezoidal adjusting blocks 22, and a rotating handwheel 23. The lead screw and nut mechanism includes a lead screw 24 and a positive-thread lead screw and nut assembly and a negative-thread lead screw and nut assembly mounted on the lead screw 24. Each set of linear guide rail slider mechanisms includes a linear guide rail 25 and two sliders 26 slidably mounted on the linear guide rail 25. The positive-thread lead screw and nut assembly and the negative-thread lead screw and nut assembly can slide in opposite directions on the lead screw 24. The fixing seat 21 is positioned within the two first T-slots 11 of the testing platform 1 by two sets of first T-head screws 4, and the two sets of first T-head screws... When all screws 4 are in an untightened state, they can slide along the first T-slot 11. The two sets of first T-head screws can slide to multiple sliding positions. When the two sets of first T-head screws slide to the sliding position, the two sets of first T-head screws are tightened. The test axis of the test equipment is located on the symmetrical plane of the two right-angled trapezoidal adjusting blocks 22. A screw and nut mechanism is provided in the middle of one side surface of the fixed base 21 along the first direction and along the second direction. Two sets of linear guide slider mechanisms are symmetrically arranged on both sides of the screw and nut mechanism. The two sliders 26 on the two linear guides 25 near the spur screw and nut assembly have their side surfaces away from the test platform 1 connected to the spur screw and nut assembly. The surfaces of the components away from the test platform 1 are all mounted on the right-angled side surface of one of the two right-angled trapezoidal adjusting blocks 22. The other two sliders 26 on the linear guide 25 near the reverse-thread screw nut assembly are also mounted on the right-angled side surface of the other of the two right-angled trapezoidal adjusting blocks 22, just as the surfaces of the reverse-thread screw nut assembly away from the test platform 1 are mounted on the right-angled side surface of the other of the two right-angled trapezoidal adjusting blocks 22. Both right-angled trapezoidal adjusting blocks 22 extend along a third direction, and the inclined sides 221 of the two right-angled trapezoidal adjusting blocks 22 are arranged opposite each other to form a V-shaped structure. A rotating handwheel 23 is fixedly mounted on one end of the screw 24. The handwheel 23 can be rotated to multiple adjustment positions. When the handwheel 23 is rotated to an adjustment position, the end of the motor under test 5 near the test platform abuts against the inclined surface 221 of the two right-angled trapezoidal adjustment blocks 22. The drive shaft 51 of the motor under test 5 extends along the third direction and is on the same straight line as the test shaft of the test equipment. The upper fixing frame 3 is installed on the adjustment assembly 2 at one end along the first direction. The inner surface of the other end of the upper fixing frame along the first direction abuts against the end of the motor under test 5 away from the test platform 1 and presses the motor under test 5 against the test platform 1. The first direction, the second direction and the third direction are perpendicular to each other.Therefore, by sliding the first T-head screw within the first T-slot 11 of the test platform 1, the adjustment component 2 is adjusted until the symmetrical planes of the two right-angled trapezoidal adjustment blocks 22 of the adjustment component 2 coincide with the test axis of the test equipment. Then, by rotating the rotary handwheel 23, the lead screw 24 is rotated, and subsequently, the positive thread lead screw nut 271 and the negative thread lead screw nut 281 on the lead screw 24 move in opposite directions, causing the motor under test 5, placed between the two right-angled trapezoidal adjustment blocks 22, to move in the first direction. This changes the axial height of the drive shaft 51 of the motor under test 5 until the drive shaft 51 of the motor under test 5 is on the same straight line as the test axis of the test equipment. This allows for the adjustment of the axial height of the drive shaft of the motor under test without changing the test fixture when testing motors of different sizes, until the drive shaft of the motor under test 5 is coaxial with the test axis of the test equipment, thus improving efficiency.

[0102] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of one embodiment, and the modules or processes shown in the drawings are not necessarily essential for implementing this utility model.

[0103] Those skilled in the art will understand that the modules in the apparatus of the embodiments can be distributed in the apparatus of the embodiments as described in the embodiments, or they can be located in one or more devices different from this embodiment with corresponding changes. The modules of the above embodiments can be combined into one module, or they can be further divided into multiple sub-modules.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An adjustable testing fixture adaptable to motors of various sizes, characterized in that, include: The test platform has at least two first T-slots on one side surface along a first direction, each first T-slot extending along a second direction, and the first T-slots being equally spaced along a third direction. The adjustment assembly includes a fixed base, a lead screw and nut mechanism, two sets of linear guide rail slider mechanisms, two right-angled trapezoidal adjustment blocks, and a rotary handwheel. The lead screw and nut mechanism includes a lead screw and a positive-tooth lead screw and nut assembly and a negative-tooth lead screw and nut assembly mounted on the lead screw. Each set of linear guide rail slider mechanisms includes a linear guide rail and two sliders slidably mounted on the linear guide rail. The positive-tooth lead screw and nut assembly and the negative-tooth lead screw and nut assembly can slide in opposite directions on the lead screw. The fixed base is positioned in the two first T-slots of the test platform by two sets of first T-head screws. When both sets of first T-head screws are in the loose state, they can slide along the first T-slots. The two sets of first T-head screws can slide to multiple sliding positions. When the two sets of first T-head screws slide to the sliding position, the two sets of first T-head screws are tightened. The test axis of the test equipment is located on the symmetrical plane of the two right-angled trapezoidal adjustment blocks. The screw and nut mechanism is provided at the middle of one side surface of the fixed base along the first direction and along the second direction, and the two sets of linear guide slider mechanisms are symmetrically arranged on both sides of the screw and nut mechanism. The surfaces of two sliders on the two linear guides near the spur screw nut assembly that are away from the test platform and the surfaces of the spur screw nut assembly that are away from the test platform are both mounted on the surface of the right-angled waist of one of the two right-angled trapezoidal adjusting blocks. The surfaces of the other two sliders on the linear guides near the reverse screw nut assembly that are away from the test platform and the surfaces of the reverse screw nut assembly that are away from the test platform are both mounted on the surface of the right-angled waist of the other of the two right-angled trapezoidal adjusting blocks. The two right-angled trapezoidal adjusting blocks extend along the third direction, and the surfaces of the inclined waists of the two right-angled trapezoidal adjusting blocks are arranged opposite each other to form a V-shaped structure. The rotating handwheel is fixedly installed at one end of the lead screw. The rotating handwheel can be rotated to multiple adjustment positions. When the rotating handwheel is rotated to the adjustment position, the end of the motor under test close to the test platform abuts against the inclined surface of the two right-angled trapezoidal adjustment blocks respectively. The drive shaft of the motor under test extends along the third direction and is located on the same straight line as the test shaft. An upper fixing frame is provided, with one end of the upper fixing frame along the first direction mounted on the adjustment assembly, and the inner surface of the other end of the upper fixing frame along the first direction abutting against the end of the motor under test away from the test platform and pressing the motor under test against the test platform. Wherein, the first direction, the second direction, and the third direction are perpendicular to each other.

2. The adjustable detection fixture as described in claim 1, characterized in that, The positive lead screw nut assembly includes a positive lead screw nut and a positive lead screw nut fixing block, and the negative lead screw nut assembly includes a negative lead screw nut and a negative lead screw nut fixing block; The screw is provided in the middle of one side surface of the fixed seat along the first direction and along the second direction. The positive thread screw nut and the negative thread screw nut are threaded on the screw. The positive thread screw nut fixing block is installed on the positive thread screw nut and the negative thread screw nut fixing block is installed on the negative thread screw nut. The surface of the positive thread screw nut fixing block away from the test platform is mounted on the surface of the right angle of one of the two right-angled trapezoidal adjusting blocks, and the surface of the negative thread screw nut fixing block away from the test platform is mounted on the surface of the right angle of the other of the two right-angled trapezoidal adjusting blocks.

3. The adjustable detection fixture as described in claim 2, characterized in that, The positive thread screw nut is composed of a first nut head and a first nut rod connected to each other, and the negative thread screw nut is composed of a second nut head and a second nut rod connected to each other. The lead screw nut fixing block is provided with a first through hole along the second direction, the first nut rod passes through the first through hole, and the first nut head is located outside the first through hole and is fixedly installed on the lead screw nut fixing block. The reverse-tooth screw nut fixing block is provided with a second through hole along the second direction, the second nut rod passes through the second through hole, the second nut head is located outside the second through hole and is fixedly installed on the reverse-tooth screw nut fixing block, and the first nut rod and the second nut rod are arranged opposite to each other.

4. The adjustable detection fixture as described in claim 1, characterized in that, The adjustment assembly also includes a lead screw fixing seat and a lead screw transmission seat; One end of the lead screw passes through a third through hole provided in the lead screw drive seat along the second direction, and the lead screw drive seat is mounted on the fixed seat on one side surface along the first direction. The lead screw fixed seat is mounted on the other end of the lead screw, and the lead screw fixed seat is mounted on the fixed seat on one side surface along the first direction. The positive thread lead screw nut assembly and the negative thread lead screw nut assembly are disposed between the lead screw fixed seat and the lead screw drive seat.

5. The adjustable detection fixture as described in claim 4, characterized in that, The fixed seat has two stepped bosses on both sides of the middle of one side surface along the first direction. The lead screw is disposed between the two stepped bosses. The lead screw fixed seat is installed on one side surface along the first direction at the part of the fixed seat located between the two stepped bosses. The lead screw transmission seat is installed on one side surface along the first direction at the part of the fixed seat located between the two stepped bosses. Two linear guides are respectively mounted on two stepped bosses.

6. The adjustable detection fixture as described in claim 1, characterized in that, The upper fixing frame includes a motor fixing housing and two fixing plates; The motor mounting housing is an arched housing structure with openings at both ends along the third direction and one end along the first direction. The two sides of the motor mounting housing along the opening in the first direction are respectively fixedly connected to the adjustment assembly by a fixing plate, and the inner surface of the motor mounting housing along the first direction abuts against the end of the motor under test away from the test platform.

7. The adjustable detection fixture as described in claim 6, characterized in that, The fixed base has two sets of second T-slots on one side surface along the first direction. Each set of second T-slots includes two second T-slots symmetrically arranged on both sides of the lead screw, and the two second T-slots in each set are located on the outside of the corresponding linear guide rail. Both fixing plates extend along the third direction. Each fixing plate is provided with a set of first threaded holes. The two sets of first threaded holes correspond to two sets of second T-slots. Each set of first threaded holes includes two first threaded holes. The fixing plates are fixedly connected to the fixing base through the first threaded holes, the second T-slots, and the second T-head screws.

8. The adjustable detection fixture as described in claim 6, characterized in that, The motor mounting housing has a boss on its inner surface along the first direction, and the boss abuts against the end of the motor under test away from the test platform.

9. The adjustable detection fixture as described in claim 1, characterized in that, When the rotary handwheel is rotated to the adjustment position, the positive thread screw nut assembly and the negative thread screw nut assembly are symmetrically arranged with respect to the center line of the screw along the first direction.

10. The adjustable detection fixture as described in claim 1, characterized in that, Each group of first T-head screws includes at least two first T-head screws.

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