Power test tool for high load coupling

Abstract

The utility model relates to a kind of power test tool, specifically a kind of power test tool of high load shaft coupling, including base;Still including driving module, detection module and brake module installed on base;Multiple sets of outer thread sleeve;Multiple sets of outer thread sleeve are fixedly connected with the output end of driving module, the working shaft of detection module and the working shaft of brake module respectively;Still including connecting piece, including flange;Adjusting member;The extrusion force between flange and shaft coupling is adjusted by adjusting member;On the one hand, it can improve the connection strength;On the other hand, it can improve installation convenience, can reduce the rigid requirement to bolt installation sequence;Avoid the accuracy of test result to be influenced due to the insufficient pre-tightening force caused by bolt installation sequence error;And in the testing process, the impact, vibration and thermal deformation in testing process can be buffered by adjusting member, avoid the structure of driving module, detection module and brake module to be damaged, improve the service life of test tool.

Description

Technical Field

[0001] This utility model relates to a power testing fixture, specifically a power testing fixture for a high-load coupling. Background Technology

[0002] In simple terms, coupling testing fixtures are a system of specialized clamps and auxiliary devices used to fix, connect, and drive couplings, simulating their real-world working environment for performance testing. Their primary purpose is to safely, accurately, and efficiently test coupling performance (e.g., torque capacity, speed, and lifespan). Their functions include: quality control: ensuring every coupling leaving the factory meets design standards; R&D support: helping engineers test the performance of new designs and materials, optimizing products; and standard certification: providing data support for products to pass industry or international standard certifications.

[0003] Common coupling testing fixtures include a drive module (providing power); power is transmitted to the coupling under test via a connecting mechanism (flange, etc.). The coupling then transmits power to a braking module, which applies an adjustable resistance (load) to simulate a real-world working scenario. During this process, the testing module measures key parameters such as torque, speed, and power transmitted by the coupling in real time. The connecting mechanism typically uses a flange connection; that is, the flange is tightly connected to the coupling using bolts.

[0004] In common coupling testing fixtures, the flange positions are relatively fixed. When connecting the coupling, shims are added to eliminate the connection gap, and then it is fixed with bolts. However, the relatively fixed flange makes it difficult to ensure that the preload between the flange and the coupling meets the test requirements (especially when testing the coupling under high load conditions, insufficient preload will seriously affect the accuracy of the test results). The common method of preload control is to fix it diagonally, that is, to tighten the bolts diagonally. Although this can effectively ensure the preload, as the test proceeds (especially under high load conditions), some parts of the test fixture may undergo thermal deformation or generate vibrations that propagate along the coupling axis. This will greatly interfere with the accuracy of the test results, and excessive thermal deformation and vibration may cause pressure damage to some parts of the test fixture. Utility Model Content

[0005] The purpose of this invention is to provide a power testing fixture for high-load couplings to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A power testing fixture for a high-load coupling includes a base;

[0008] It also includes a drive module, a detection module, and a braking module mounted on the base;

[0009] Multiple sets of external threaded sleeves; the multiple sets of external threaded sleeves are respectively fixedly connected to the output end of the drive module, the working shaft of the detection module, and the working shaft of the braking module;

[0010] It also includes a connecting component, including a flange that is slidably disposed on the external threaded sleeve, the flange being used for connection with a coupling;

[0011] Adjusting element; the adjusting element is used to adjust the clamping force between the flange and the coupling.

[0012] The power testing fixture for the high-load coupling described above includes: the connecting component further includes a telescopic column mounted on the flange, and multiple sets of sliders are installed on the telescopic column; multiple sets of sliding grooves are opened on the inner wall of the external threaded sleeve to slide and engage with the sliders.

[0013] The power testing fixture for the high-load coupling described above includes: the adjusting component comprising multiple sets of first connecting rods rotatably mounted on the flange; multiple sets of second connecting rods rotatably mounted on the external threaded sleeve; the second connecting rods being rotatably connected to the first connecting rods; a spring is provided inside the external threaded sleeve, with both ends of the spring abutting against the external threaded sleeve and the telescopic column, respectively.

[0014] The power testing fixture for the high-load coupling described above includes an internally threaded sleeve that is threadedly connected to the externally threaded sleeve, and a baffle is installed on the internally threaded sleeve; the baffle abuts against the second connecting rod.

[0015] The power testing fixture for the high-load coupling described above: the outer wall of the baffle is arc-shaped.

[0016] The power testing fixture for the high-load coupling described above includes a fixing block mounted on the internal threaded sleeve; the fixing block is hexagonal.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] Adjusting the clamping pressure between the flange and the coupling via the adjusting component can improve connection strength and ease of installation, reducing the rigid requirements on bolt installation sequence and preventing insufficient preload due to incorrect bolt installation sequence, which could affect the accuracy of test results. Furthermore, during testing, the adjusting component can buffer impacts, vibrations, and thermal deformation, preventing structural damage to the drive module, detection module, and braking module, thereby extending the service life of the testing fixture. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the power testing fixture for high-load couplings.

[0020] Figure 2 A schematic diagram of the structure of the power testing fixture for high-load couplings after the protective cover has been removed.

[0021] Figure 3 A schematic diagram of the high-load coupling power testing fixture after removing the protective cover, taken from another perspective.

[0022] Figure 4 This is a schematic diagram of the flange structure in the power testing fixture for high-load couplings.

[0023] Figure 5 for Figure 4 A structural schematic diagram from a cross-sectional perspective.

[0024] Figure 6 This is a schematic diagram of the external threaded sleeve in the power testing fixture for high-load couplings.

[0025] Figure 7 This is a schematic diagram of the telescopic column in the power testing fixture for high-load couplings.

[0026] In the picture: 1. Base;

[0027] 2. Driver module;

[0028] 3. Detection module;

[0029] 4. Braking module;

[0030] 5. External threaded sleeve; 501. Sliding groove

[0031] 6. Telescopic column; 601. Sliding block;

[0032] 7. Flange;

[0033] 8. First link;

[0034] 9. Internal threaded sleeve; 901. Baffle; 902. Fixing block;

[0035] 10. Second link;

[0036] 11. Spring. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0038] Please see Figures 1-7As an embodiment of the present utility model, the power testing fixture for the high-load coupling includes a base 1;

[0039] It also includes a drive module 2, a detection module 3, and a braking module 4 installed on the base 1;

[0040] Multiple sets of external threaded sleeves 5; the multiple sets of external threaded sleeves 5 are respectively fixedly connected to the output end of the drive module 2, the working shaft of the detection module 3 and the working shaft of the brake module 4;

[0041] It also includes a connecting component, including a flange 7 that is slidably disposed on the external threaded sleeve 5, the flange 7 being used for connection with a coupling;

[0042] Adjusting element; the adjusting element is used to adjust the clamping force between the flange 7 and the coupling.

[0043] In this embodiment, the coupling is installed between the drive module 2 and the detection module 3, and between the detection module 3 and the braking module 4. During installation, the flange 7 is first moved horizontally along the axis of the external threaded sleeve 5 by the adjusting component, so that the flange 7 contacts the coupling; then, the clamping force between the flange 7 and the coupling is adjusted by the adjusting component, thereby providing preload for the subsequent bolt connection between the flange 7 and the coupling. This improves the connection strength and installation convenience, reduces the rigid requirements on the bolt installation sequence, and avoids insufficient preload due to incorrect bolt installation sequence, which could affect the accuracy of the test results.

[0044] Furthermore, during the testing process, the adjustment components can buffer the impact, vibration, and thermal deformation, preventing damage to the structure of the drive module 2, detection module 3, and braking module 4, thereby improving the service life of the testing fixture.

[0045] In addition, an openable and closable protective cover is provided on the outside of the detection module 3 and the flange 7 to prevent breakage and injury during testing.

[0046] As a further embodiment of this utility model, the connector also includes a telescopic column 6 installed on the flange 7, and multiple sets of sliders 601 are installed on the telescopic column 6; multiple sets of sliding grooves 501 are opened on the inner wall of the external threaded sleeve 5 to slide and engage with the sliders 601.

[0047] In this embodiment, as the adjusting component moves the flange 7 closer to and contacts the coupling, it causes the telescopic column 6 to slide outward within the external threaded sleeve 5. During this process, the slider 601 slides in the groove 501. When the drive module 2 is activated, it drives the external threaded sleeve 5 to rotate. At this time, the squeezing action of the groove wall on the slider 601 can drive the telescopic column 6 and the flange 7 to rotate synchronously, thereby driving the coupling to move.

[0048] Since the telescopic column 6 and the external threaded sleeve 5 are slidably connected, the installation difficulty can be reduced (on the one hand, it can provide enough space for the installation of the coupling, and on the other hand, it can provide enough clearance for the adjustment parts to buffer vibration, impact and thermal deformation during the test); it can also improve the applicability of the test fixture (when testing different couplings, the distance of the telescopic column 6 sliding outward can be changed to ensure that the flange 7 and the coupling are completely in contact).

[0049] As a further embodiment of this utility model, the adjusting component includes multiple sets of first connecting rods 8 rotatably mounted on the flange 7, and multiple sets of second connecting rods 10 rotatably mounted on the external threaded sleeve 5, the second connecting rods 10 being rotatably connected to the first connecting rods 8; a spring 11 is provided inside the external threaded sleeve 5, and the two ends of the spring 11 respectively abut against the external threaded sleeve 5 and the telescopic column 6.

[0050] In this embodiment, as the flange 7 approaches the coupling, it will drive the first connecting rod 8 to rotate, thereby driving the second connecting rod 10 to rotate. During this process, the included angles between the first connecting rod 8 and the second connecting rod 10, between the first connecting rod 8 and the flange 7, and between the second connecting rod 10 and the external threaded sleeve 5 all change.

[0051] When the external threaded sleeve 5 rotates, on the one hand, the flange 7 can be driven to rotate by the squeezing action of the groove wall of the slide 501 on the slider 601; on the other hand, the flange 7 can be driven to rotate by the first connecting rod 8 and the second connecting rod 10. This can ensure the effective transmission of torque under high load conditions of the coupling and avoid torque loss due to installation gap, thereby affecting the accuracy of the test results.

[0052] During the sliding process of the flange 7 driving the telescopic column 6, the elastic force of the spring 11 is released (initially, the spring 11 is in a compressed state with a large amount of compression; as the telescopic column 6 slides, the compression of the spring 11 gradually decreases); and when the flange 7 comes into contact with the coupling, the elastic force of the spring 11 provides a preload between the flange 7 and the coupling; during the test, the axial force generated by factors such as impact, vibration and thermal deformation will drive the telescopic column 6 to slide in the external threaded sleeve 5 through the flange 7. At this time, the elastic force of the spring 11 provides a buffer force, which can prevent damage to the structure of the drive module 2, detection module 3 and braking module 4, thereby improving the service life of the test fixture.

[0053] As a further embodiment of this utility model, the adjusting component also includes an internally threaded sleeve 9 that is threadedly connected to the externally threaded sleeve 5, and a baffle 901 is installed on the internally threaded sleeve 9; the baffle 901 abuts against the second connecting rod 10.

[0054] In this embodiment, in the initial state, the length of the external threaded sleeve 5 exposed on the telescopic column 6 is relatively short, and under the elastic force of the spring 11, the baffle 901 abuts against the second connecting rod 10; at this time, the distance between the flanges 7 connecting the two ends of the same coupling is relatively large, which can reduce the resistance of coupling installation; and through the threaded engagement of the external threaded sleeve 5 and the internal threaded sleeve 9, the position of the second connecting rod 10 can be locked, thereby locking the position of the telescopic column 6 in the external threaded sleeve 5, and keeping the position of the flange 7 unchanged.

[0055] Connection process: An external force is applied to drive the internal threaded sleeve 9 and the external threaded sleeve 5 to rotate relative to each other. At this time, through the threaded engagement between the external threaded sleeve 5 and the internal threaded sleeve 9, the internal threaded sleeve 9 will move along the axial direction of the external threaded sleeve 5 towards the flange 7, and drive the baffle 901 to move synchronously. Under the elastic force of the spring 11, the flange 7 is moved by the telescopic column 6, which drives the second connecting rod 10 to rotate, so that the second connecting rod 10 always remains in contact with the baffle 901. When the flange 7 is in contact with the coupling, the internal threaded sleeve 9 continues to be driven to move. Through the contact action of the coupling on the flange 7, the second connecting rod 10 does not rotate. Therefore, the baffle 901 will separate from the second connecting rod 10, thereby improving the buffering effect of the tooling and avoiding structural damage to the tooling due to excessive pressure, which affects its service life.

[0056] The contact action between the baffle 901 and the second connecting rod 10 reduces the instantaneous kinetic energy of the flange 7 in contact with the coupling, protecting the coupling and tooling, preventing excessive impact force from causing structural damage to the coupling and tooling, and ensuring the accuracy of the test results.

[0057] Furthermore, after the flange 7 contacts the coupling, it continuously drives the internal threaded sleeve 9 to rotate, so that it gradually wraps around the end of the external threaded sleeve 5, which can enhance the mechanical strength of the external threaded sleeve 5 and reduce the probability of the external threaded sleeve 5 cracking under high load (high torque) conditions.

[0058] As a further embodiment of this utility model, the outer wall of the baffle 901 is arc-shaped.

[0059] In this embodiment, the baffle 901 is arc-shaped, so that the second connecting rod 10 and the baffle 901 remain tangential (with a small contact area) when in contact, thereby reducing the friction area between the second connecting rod 10 and the baffle 901 during rotation, thus improving the service life of the tooling.

[0060] As a further embodiment of this utility model, a fixing block 902 is installed on the internal threaded sleeve 9; the fixing block 902 is hexagonal.

[0061] In this embodiment, since the initial compression of the spring 11 is large, the pressure exerted by the second connecting rod 10 against the baffle 901 is large, resulting in greater resistance to the relative rotation of the internal threaded sleeve 9 and the external threaded sleeve 5. The hexagonal fixing block 902 can be easily used with tools, and the internal threaded sleeve 9 can be rotated with the help of tools, which can improve the connection efficiency and reduce the connection difficulty.

[0062] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. A power testing fixture for a high-load coupling, comprising a base (1); Its features are, It also includes a drive module (2), a detection module (3) and a braking module (4) mounted on the base (1); Multiple sets of external threaded sleeves (5); the multiple sets of external threaded sleeves (5) are respectively fixedly connected to the output end of the drive module (2), the working shaft of the detection module (3) and the working shaft of the braking module (4); It also includes a connecting component, including a flange (7) slidably disposed on the external threaded sleeve (5), the flange (7) being used for connection with a coupling; Adjusting element; the adjusting element is used to adjust the clamping force between the flange (7) and the coupling.

2. The power testing fixture for a high-load coupling according to claim 1, characterized in that, The connector also includes a telescopic column (6) installed on the flange (7), and multiple sets of sliders (601) are installed on the telescopic column (6); multiple sets of sliding grooves (501) are opened on the inner wall of the external threaded sleeve (5) to slide and engage with the sliders (601).

3. The power testing fixture for a high-load coupling according to claim 2, characterized in that, The adjusting component includes multiple sets of first connecting rods (8) rotatably mounted on the flange (7), and multiple sets of second connecting rods (10) rotatably mounted on the external threaded sleeve (5). The second connecting rods (10) are rotatably connected to the first connecting rods (8). A spring (11) is provided inside the external threaded sleeve (5), and the two ends of the spring (11) abut against the external threaded sleeve (5) and the telescopic column (6) respectively.

4. The power testing fixture for a high-load coupling according to claim 3, characterized in that, The adjusting component also includes an internal threaded sleeve (9) that is threadedly connected to the external threaded sleeve (5), and a baffle (901) is installed on the internal threaded sleeve (9); the baffle (901) abuts against the second connecting rod (10).

5. The power testing fixture for a high-load coupling according to claim 4, characterized in that, The outer wall of the baffle (901) is arc-shaped.

6. The power testing fixture for a high-load coupling according to claim 4, characterized in that, A fixing block (902) is installed on the internal threaded sleeve (9); the fixing block (902) is hexagonal.

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