A large synchronous vertical motor test platform

Abstract

The application discloses a large synchronous vertical motor test platform and relates to the technical field of motor test, which comprises a single motor no-load test module and a full-system load type drag test module, and the two modules share a common core upper support. The single motor no-load test module realizes horizontal centering of the tested motor through a lower rack adjusting device and realizes anti-slippage fixing by cooperation of a U-shaped groove and a foundation T-shaped groove. The full-system load type drag test module is composed of a detachable connection of an upper support, a middle support and a bottom support. The bottom support is provided with a jack adjusting mechanism to realize centering of the tested motor. The middle support is provided with a detachable assembly type operation platform. Quick and accurate assembly is realized through a guide positioning device between the multiple supports. The tested motor and the tested motor are connected through an overload protection shaft coupling. Symmetrical climbing handrails are arranged in the inside and outside of each support. The application realizes efficient switching and compatibility of the two test modes, solves the problem of assembly and centering of heavy components, and greatly improves the safety, reliability and practicality of the test.

Description

Technical Field

[0001] This invention relates to the field of motor testing technology, and in particular to a large-scale synchronous vertical motor testing platform. Background Technology

[0002] In the production and R&D of large synchronous vertical motors, the single-unit no-load test and the paired motor load-type drag test before delivery are key steps to verify their design, manufacturing quality, and performance compliance. These motors are widely used in major engineering fields such as water conservancy, mining, and energy, and are characterized by high power, low speed, and large structural size and weight (up to tens of tons).

[0003] In existing technologies, testing of large vertical motors often faces the following challenges: First, traditional testing fixtures are often single-function and cannot simultaneously support single-machine no-load testing and load-bearing testing, resulting in low equipment utilization and complex conversion processes. Second, due to the large weight and size of the motor and its supporting lower frame, precise horizontal alignment after initial installation is extremely difficult, and repeated lifting and adjustment are not only inefficient but also pose safety risks. Third, when constructing a multi-layered support structure for the entire system test bench, the alignment and assembly between the various support layers (such as bottom support, middle support, and upper support) is time-consuming and labor-intensive, and accuracy is difficult to guarantee. In addition, issues such as overload protection of overload protection couplings, the convenience and safety of aerial work platforms, and the anti-slip fixation of large components on the test platform all pose challenges to the safety, efficiency, and reliability of the test. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing large-scale vertical motor testing equipment, such as poor compatibility, cumbersome test switching, low adjustment and positioning accuracy, and insufficient safety. This invention provides a large-scale synchronous vertical motor testing platform. The platform adopts a modular design, is compatible with both single-machine no-load and full-system load testing modes, and integrates multiple rapid adjustment and safety protection mechanisms, aiming to achieve efficient, accurate, safe, and reliable testing of large-scale vertical motors.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a large-scale synchronous vertical motor test platform, comprising: a compatible single-unit no-load test module and a full-system load-type drag test module; the single-unit no-load test module includes an upper support, the upper support being provided with a lower frame support seat and a lower frame adjustment device for horizontally adjusting the lower frame of the motor under test; the full-system load-type drag test module includes the upper support, middle support, and bottom support, which are detachably connected from top to bottom; the bottom support is provided with a companion motor and a jack adjustment mechanism for horizontally adjusting the companion motor, the jack adjustment mechanism including multiple jacks circumferentially arranged on the bottom support base plate; the middle support is provided with a detachable working platform; the upper support and the middle support, and the middle support and the bottom support, are quickly aligned and assembled through a guide positioning device; the companion motor is connected to the motor under test through an overload protection coupling.

[0006] As a further improvement of the present invention, the lower frame adjustment device includes a fixing block fixed to the lower frame support, a screw threaded to the fixing block, and a pressure foot connected to the end of the screw; by rotating the screw, the pressure foot is driven to push the side of the lower frame of the test motor to achieve horizontal centering of the test motor.

[0007] As a further improvement of the present invention, the guiding and positioning device includes at least two guide rods. One end of each guide rod is provided with a guide head with a guide angle, the other end is provided with an external threaded connection, and the middle part is provided with a flat part that facilitates wrench operation. The guide angle of the guide head is 10°-20°. The guide rods are detachably installed on the top surface of the bottom support or the middle support to guide the positioning holes of the upper support to be quickly aligned.

[0008] As a further improvement of the present invention, the detachable working platform is an assembled structure, including multiple fan-shaped anti-slip plates, preferably 6-10 pieces, mounted on the inner wall of the central support via support beams; wherein at least one of the fan-shaped anti-slip plates is detachably connected to the support beam frame, and the detachable connection method is bolt connection, so as to form a passage for personnel to pass through, and is reinstalled after personnel are in place.

[0009] As a further improvement of the present invention, the overload protection coupling includes two half couplings and a plurality of nylon pins connecting the two half couplings. The pins are made of high wear-resistant nylon. The pins have an axial through hole in the middle and are fixed to a retaining ring provided on the half coupling by a pin bolt passing through the through hole.

[0010] As a further improvement of the present invention, the keyway side of the half coupling is also provided with a top key screw for radially pressing the key installed in the keyway to prevent it from moving.

[0011] As a further improvement of the present invention, the jack adjustment mechanism includes a plurality of jack rear bearings arranged circumferentially on the bottom support plate and jacks mounted thereon; by coordinating and adjusting the stroke of each of the jacks, the test motor is pushed to move horizontally on the base plate to achieve alignment with the test motor.

[0012] As a further improvement of the present invention, the inner and outer walls of the upper support, middle support and bottom support are all provided with vertical climbing handrails to form a safe climbing path that is symmetrical inside and out.

[0013] As a further improvement of the present invention, the upper support base plate is provided with multiple sets of U-shaped grooves, which, in conjunction with the T-shaped grooves and bolts on the test foundation, achieve anti-slip fixation of the single-unit no-load test module in the test position.

[0014] As a further improvement of the present invention, the single-unit no-load test module is independently installed on the test foundation to conduct a single-unit no-load test; when conducting a full system load test, the upper support that has completed the single-unit test is hoisted as a whole onto the assembled middle support, and a quick connection is achieved with the assistance of the guide positioning device and bolts to form the full system load type drag test module.

[0015] As a further improvement of the present invention, a test method using the large synchronous vertical motor test platform is also provided. The method includes a single-machine no-load test mode and a full-system load test mode, and the specific steps are as follows: The single-unit no-load test mode includes the following steps: fixing the upper support to the test position by connecting the U-shaped groove on its base plate with the T-shaped groove on the test foundation and bolts, forming a single-unit no-load test module; installing the motor under test on the lower frame support seat of the upper support; operating the lower frame adjustment device to adjust the lower frame of the motor under test horizontally; after completing the alignment, conducting a single-unit no-load performance test on the motor under test.

[0016] The full-system load test mode includes the following steps: installing and fixing the bottom support on the test foundation; installing the test motor on the base plate of the bottom support, and adjusting the horizontal centering of the test motor using the jack adjustment mechanism; quickly aligning and assembling the middle support onto the bottom support using the guide positioning device; installing the detachable working platform on the middle support; hoisting the upper support, which has completed the single-machine no-load test, together with the test motor, and quickly aligning and assembling it onto the middle support using the guide positioning device; connecting the test motor and the test motor through the overload protection coupling; and conducting a dual-machine drag load test.

[0017] The above method enables efficient and rapid switching between single-machine no-load testing and full-system load testing modes on the same test platform, significantly improving test efficiency and equipment utilization.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. Modular and compatible design: By designing the upper support as a universal core module, the system achieves high efficiency and rapid switching between single-unit no-load test bench and full-system load test bench, significantly improving equipment utilization and testing efficiency.

[0019] 2. Dual rapid alignment mechanism: For the test motor and the accompanying test motor, a lower frame adjustment device based on screw jacking and an adjustment mechanism based on jack coordinated jacking are respectively set up, which solves the problem of horizontal alignment of heavy components, avoids repeated lifting, and makes the operation safe, precise and efficient.

[0020] 3. Rapid and precise assembly: By setting guide rods with guide heads and threads, it plays a guiding and preliminary positioning role in the assembly of multi-layer support structures, so that the bolt holes between the upper support, middle support and bottom support can be quickly and accurately aligned, which greatly improves the assembly speed and accuracy.

[0021] 4. Enhanced Safety and Reliability: The temporarily detachable modular work platform balances operational convenience with personnel safety; symmetrically arranged climbing handrails provide safe access; the anti-slip fixing design of the U-groove and T-groove ensures the stability of single-machine testing; the nylon pin coupling has overload protection, enhancing system safety.

[0022] 5. Overall Functional Integration: This invention integrates the support, adjustment, centering, connection, operation, and safety protection functions required for the test platform into an organic whole. The operation process is clear, and it solves a series of complex problems in the testing of large vertical motors, making it highly practical. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the single-unit no-load test module of the present invention; Figure 2 for Figure 1 A sectional view; Figure 3 for Figure 2 A partial enlarged view of the adjustment device for the middle and lower frame; Figure 4 This is a sectional view of the lower frame adjustment device; Figure 5 This is a three-dimensional structural diagram of the load type drag test module of the whole system of the present invention; Figure 6 for Figure 5A sectional view; Figure 7 A three-dimensional structural diagram of the disassembly operation platform; Figure 8 for Figure 7 A cross-sectional view along the AA direction; Figure 9 A three-dimensional structural diagram of an overload protection coupling; Figure 10 for Figure 9 A sectional view; Figure 11 This is a schematic diagram of the guide rod structure; Figure 12 for Figure 5 Assembly diagram of the guide rod after installation at point B; In the diagram: 1-Test motor, 101-Lower frame of test motor, 102-Test motor shaft, 103-Test motor flange, 2-Upper support, 201-Upper support top plate, 202-Upper support cylinder, 203-Upper support handrail, 204-Fixing block, 205-Lower frame support seat, 206-Upper support base plate, 3-Lower frame adjustment device, 301-Pressure foot, 302-Screw, 4-Test platform, 5-Test platform pit, 6-Middle support, 601-Middle support top plate, 602-Middle support cylinder, 603-Support inclined plate, 604-Middle support inner handrail, 605-Middle support outer handrail, 606-Transition block, 607-Middle support base plate, 7-Disassembled working platform, 701-Fan-shaped anti-slip plate, 702-I-shaped support plate, 703 - Inclined support top plate, 704- Inclined support side plate, 705- Inclined support stiffener, 8- Overload protection coupling, 801- Half coupling, 802- Pin, 803- Pin bolt, 804- Retaining ring, 805- Retaining ring bolt, 806- Key, 807- Top key screw, 9- Test motor, 901- Test motor shaft extension, 902- Shaft extension keyway, 10- Bottom support, 1001- Bottom support top plate, 1002- Bottom support cylinder, 1003- Bottom support inner handrail, 1004- Bottom support outer handrail, 1005- Bottom support stiffener, 1006- Jack rear bearing seat, 1007- Bottom support base plate, 1008- Door hole, 11- Guide rod, 1101- Guide head, 1102- Flat part, 1103- Transition rod, 1104- External threaded connection part. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0025] like Figures 1 to 12As shown, this embodiment of the invention provides a large-scale synchronous vertical motor test platform. The core concept of this invention lies in modular compatibility and rapid, precise adjustment. The entire platform consists of two main functional modules: a single-machine no-load test module and a full-system load-type drag test module. These two modules share a key upper support 2, and can quickly switch test modes through different combination methods.

[0026] I. Single-unit no-load test module like Figure 1 and Figure 2 As shown, a single-machine no-load test module is used for single-machine no-load testing. This module mainly includes an upper support 2 and a test motor 1. The upper support 2 is the core load-bearing structure of the module, and it mainly includes an upper support top plate 201, an upper support cylinder 202, and an upper support bottom plate 206. A lower frame support seat 205 is fixed on the upper support top plate 201 to directly support the lower frame 101 of the test motor. The test motor 1 is mounted on the lower frame 101 of the test motor.

[0027] Key Feature 1: Lower Frame Adjustment Device 3 To address the alignment challenge after the initial placement of the lower frame 101 of the heavy-duty test motor, a lower frame adjustment device 3 was installed on the upper support 2. For example... Figure 3 and Figure 4 As shown, the device includes a fixing block 204 welded and fixed to the lower frame support 205, a screw 302 threadedly engaged with the fixing block 204, and a pressure foot 301 connected to the end of the screw 302. During installation, the lower frame 101 of the motor under test is first roughly positioned on the support 205. Then, the operator uses a tool to rotate the circumferentially arranged screws 302 through a circular hole on the side of the upper support cylinder 202. The axial movement of the screws 302 drives the pressure foot 301 to move radially, thereby pushing against the side of the base plate of the lower frame 101 of the motor under test, achieving fine-tuning of the lower frame 101 of the motor under test and the motor under test 1 on it in the horizontal plane until precise alignment is achieved. This design avoids the enormous workload and safety risks associated with repeatedly lifting tens of tons of weight due to inaccurate alignment.

[0028] Key Feature Two: Anti-slip Fixation To ensure stability during high-speed no-load operation of the single unit, multiple sets of U-shaped grooves are provided on the upper support base plate 206. During installation, bolts are passed through the U-shaped grooves and connected to the pre-set T-shaped grooves on the test foundation for fastening. This connection method allows for adjustment of the installation position of the upper support 2 within a certain range, and provides strong shear resistance after locking, effectively preventing support slippage due to vibration during the test. During single-unit testing, the test motor shaft 102 extends downward into the test platform pit 5, lowering the overall center of gravity and improving operational stability.

[0029] II. Full System Load Type Driving Test Module like Figure 5 and Figure 6 As shown, when a load test of two motors driving against each other is required, a middle support 6 and a bottom support 10 are added to the single-motor no-load test module, which together with the upper support 2 constitute the full system load type driving test module.

[0030] 1. Bottom support 10 and jack adjustment mechanism The bottom support 10 is mounted on the test platform 4, and a test motor 9 is mounted on its bottom support base plate 1007. To achieve precise alignment between the test motor 9 and the test motor 1, multiple jack supports 1006 are provided around the bottom support base plate 1007, with one jack mounted on each support (the jack body is not shown separately in the figure). By coordinating and adjusting the lifting stroke of these jacks, the heavy test motor 9 can be smoothly pushed to make small-range horizontal movements on the bottom support base plate 1007, thereby completing the alignment adjustment. The bottom support base plate 1007 is also machined with a stop and mounting screw holes that mate with the base of the test motor 9, as well as process holes for weight reduction.

[0031] 2. Central support 6 and dismantling platform 7 A middle support 6 is installed above the bottom support 10. A transition block 606 is welded to the inner wall of the middle support cylinder 602 for mounting the detachable work platform 7. (Example) Figures 7 to 8 As shown, the work platform 7 is a modular structure, mainly consisting of eight fan-shaped anti-slip plates 701 serving as the tread surface, an I-beam support plate 702 serving as the main beam, and a triangular support frame composed of a diagonal support top plate 703, diagonal support side plates 704, and diagonal support stiffeners 705. All components are connected by bolts, making assembly and disassembly convenient. Notably, one of the fan-shaped anti-slip plates 701 is designed to be temporarily removed, forming a passageway that allows workers to climb to the platform height via the inner handrail 604 of the central support. Once workers are in position, the plate can be reinstalled, greatly improving the safety of working at height.

[0032] 3. Quick assembly guide and positioning device To achieve rapid and precise bolt connection between the three layers of large steel structures—upper support 2, middle support 6, and bottom support 10—this invention incorporates guide rods 11. For example... Figure 11-12 As shown, one end of the guide rod 11 has a 15° guide head 1101, and the other end has an external threaded connection part 1104 (such as M42 external thread). The middle part has a flat part 1102 for easy clamping with a wrench. A transition rod 1103 is provided between the external threaded connection part 1104 and the flat part 1102. The number of guide rods 11 is 2-12.

[0033] The assembly process is as follows: First, position and fix the bottom support 10. Then, screw multiple guide rods 11 into the corresponding screw holes of the bottom support top plate 1001. When hoisting the middle support 6, the holes on the middle support bottom plate 607 will automatically fit the guide rods 11 under the guidance of the guide head 1101, achieving initial alignment, after which bolt tightening can be easily completed. After the middle support 6 is installed, transfer the guide rods 11 to the middle support top plate 601, and then guide the upper support 2 to quickly and accurately fall into place in the same way. This device completely solves the problem of hole alignment in multi-layer heavy structures.

[0034] 4. Overload protection coupling 8 During the load test, the auxiliary motor 9 and the tested motor 1 are connected via an overload protection coupling 8 to transmit torque. For example... Figure 9 and Figure 10 As shown, the overload protection coupling 8 has an overload protection function. It mainly consists of two half-couplings 801 and several nylon pins 802. The nylon pins 802 have moderate strength; when an unexpected overload occurs during testing, the pins 802 will undergo shear failure before the critical mechanical components, thus providing protection. The pins 802 have through holes in the middle and are fixed to the retaining ring 804 by pin bolts 803, ensuring a secure installation. Furthermore, a key screw 807 is provided on the keyway side of the half-coupling 801. Tightening this screw during installation radially presses the key 806, effectively preventing axial or radial movement during operation and improving connection reliability.

[0035] 5. Safety auxiliary facilities To ensure the safety of personnel moving up and down the support structure, which is several meters or even more than ten meters high, vertical climbing handrails (such as upper support handrail 203, middle support inner handrail 604, middle support outer handrail 605, bottom support inner handrail 1003, and bottom support outer handrail 1004) are installed on the inner and outer walls of the upper support 2, middle support 6, and bottom support 10. The inner and outer handrails are on the same vertical line, providing a clear and symmetrical safe path for workers.

[0036] III. Module Switching and Workflow The workflow of this platform demonstrates its modular advantages: 1. Single-unit no-load test: The upper support 2 is directly fixed to a suitable position on the test platform 4 via U-shaped and T-shaped grooves. The test motor 1 is then aligned using the lower frame adjustment device 3, and the single-unit no-load performance test can be performed.

[0037] 2. Full System Load Test: In another area of ​​test platform 4 (or rearranged within the same area), first install and fix the bottom support 10, and then use a jack (either hydraulic or mechanical) to center and install the test motor 9. Next, use guide rods 11 to assemble the middle support 6 and the working platform 7 in sequence. Finally, lift the entire upper support 2, including the tested motor 1, which has completed the single-machine test, and transfer it to the full system test area. Again, use guide rods 11 to quickly assemble it onto the top of the middle support 6. Connect the overload protection coupling 8 to perform the dual-machine drag load test.

[0038] In summary, this invention, through ingenious modular design and a series of targeted rapid adjustment, positioning, and safety mechanisms, constructs a highly efficient, precise, and safe large-scale vertical motor integrated testing platform, effectively solving a series of long-standing problems in this field, such as the single testing mode, difficulty in centering and adjustment, low assembly efficiency, and high safety risks.

[0039] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be within the scope of protection of the present invention.

Claims

1. A large-scale synchronous vertical motor test platform, characterized in that, include: Compatible with single-unit no-load test modules and full-system load-type drag test modules; The single-machine no-load test module includes an upper support (2), which is provided with a lower frame support seat (205) and a lower frame adjustment device (3) for horizontally adjusting the lower frame (101) of the tested motor. The full system load type drag test module includes an upper support (2), a middle support (6) and a bottom support (10) that are detachably connected from top to bottom; the bottom support (10) is equipped with a test motor (9) and a jack adjustment mechanism for horizontally adjusting the test motor (9), the jack adjustment mechanism including multiple jacks arranged circumferentially on the bottom support base plate (1007); the middle support (6) is equipped with a detachable working platform (7); the upper support (2) and the middle support (6) and the middle support (6) and the bottom support (10) are quickly aligned and assembled through a guide positioning device; the test motor (9) is connected to the test motor (1) through an overload protection coupling (8).

2. The test platform according to claim 1, characterized in that, The lower frame adjustment device (3) includes a fixing block (204) fixed to the lower frame support (205), a screw (302) threadedly engaged with the fixing block (204), and a pressure foot (301) connected to the end of the screw (302). By rotating the screw (302), the pressure foot (301) is driven to push the side of the lower frame (101) of the test motor, thereby achieving horizontal alignment of the test motor (1).

3. The test platform according to claim 1 or 2, characterized in that, The guiding and positioning device includes at least two guide rods (11). One end of each guide rod (11) is provided with a guide head (1101) with a guide angle, and the other end is provided with an external threaded connection (1104). The middle part is provided with a flat part (1102) that is easy to operate with a wrench. The guide rod (11) is detachably installed on the top surface of the bottom support (10) or the middle support (6) to guide the positioning hole of the upper support to be quickly aligned.

4. The test platform according to claim 1, characterized in that, The detachable work platform (7) is an assembled structure, including multiple fan-shaped anti-slip plates (701) mounted on the inner wall of the central support (6) via support beams; wherein at least one of the fan-shaped anti-slip plates (701) is detachable from the support beam to form a passageway.

5. The test platform according to claim 1, characterized in that, The overload protection coupling (8) includes two half couplings (801) and a plurality of pins (802) connecting the two half couplings (801); the pins (802) are provided with an axial through hole in the middle and are fixed to the retaining rings (804) provided on the half couplings (801) by pin bolts (803) passing through the through hole.

6. The test platform according to claim 5, characterized in that, The keyway side of the half coupling (801) is also provided with a top key screw (807) for radially pressing the key (806) installed in the keyway to prevent it from moving.

7. The test platform according to claim 1, characterized in that, The jack adjustment mechanism includes multiple jack back supports (1006) arranged circumferentially on the bottom support plate (1007) and jacks installed thereon; by coordinating and adjusting the stroke of each jack, the test motor (9) is pushed to move horizontally on the base plate to achieve alignment with the test motor (1).

8. The test platform according to claim 1, characterized in that, The inner and outer walls of the upper support (2), middle support (6) and bottom support (10) are all equipped with vertical climbing handrails to form a symmetrical safe climbing path.

9. The test platform according to claim 1, characterized in that, The upper support base plate (206) has multiple sets of U-shaped grooves, which, in conjunction with the T-shaped grooves and bolts on the test foundation, enable the single-machine no-load test module to be fixed in the test position to prevent slippage.

10. The test platform according to claim 1, characterized in that, The single-unit no-load test module is independently installed on the test foundation for single-unit no-load testing; when conducting the full system load test, the upper support (2) that has completed the single-unit test is hoisted as a whole onto the assembled middle support (6), and is quickly connected by the guide positioning device and bolts to form the full system load type drag test module.

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