A tool for testing the torque of a rotating threaded gear at the drive end of a brake motor.

Abstract

This utility model discloses a torque verification tool for a rotating threaded gear at the drive end of a brake motor, comprising an internal gear and a drive head. The drive head is fixedly connected to or integrally formed with the first end of the internal gear, and the drive head protrudes from the internal gear. The internal gear includes a wheel body and a gear ring that meshes with the rotating threaded gear. The height of the gear ring along the axial direction of the wheel body is less than the axial height of the wheel body. The axes of the drive head, the gear ring, and the wheel body coincide. The rotating threaded gear is fixed by meshing with the gear ring, and the internal gear is twisted by the drive head connected to the tool, thereby achieving torque transmission. This torque verification tool for the rotating threaded gear at the drive end of a brake motor allows for quick installation, effective fastening, convenient assembly and disassembly, and ensures the accuracy of torque verification.

Description

Technical Field

[0001] This utility model relates to the technical field of testing tools for nuclear power plant brake motors, and in particular to a tool for testing the torque of a rotating threaded gear at the drive end of a brake motor. Background Technology

[0002] After a major overhaul, the brake motors in nuclear power plants require adjustment and verification of their brake torque to ensure proper engagement and protection of the mechanical components. This is achieved by setting a torque that, if exceeded, causes slippage, preventing excessive motor output and potential damage to the mechanical parts. However, the rotating threaded shaft at the motor drive end cannot be properly clamped or its torque verified using common general-purpose tools.

[0003] Currently, there are no dedicated tools on the market for testing this type of brake motor. To address the torque testing of rotating threaded shafts, a specialized torque testing device has been developed. This device uses two fastener halves to clamp and secure the rotating threaded shaft, relying primarily on the tension between the bolts on both sides and the fastener halves for tightening. However, this specialized torque testing device suffers from uneven bolt tightening force, leading to slippage during torque application, failure to properly clamp the shaft, and inaccurate or failed torque testing. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a tool for verifying the torque of the rotating threaded gear at the drive end of a brake motor.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a torque verification tool for a rotating threaded gear at the drive end of a brake motor, including an internal gear and a drive head, wherein the drive head is fixedly connected to or integrally formed with the first end of the internal gear, and the drive head protrudes from the internal gear.

[0006] The internal gear includes a gear body and a gear ring that meshes with a rotating threaded gear. The height of the gear ring along the axial direction of the gear body is less than the axial height of the gear body. The axes of the drive head, the gear ring, and the gear body coincide.

[0007] In some embodiments, the gear ring includes a plurality of helical teeth that mesh with a rotating threaded gear, at least two of the helical teeth being arranged opposite each other.

[0008] In some embodiments, the helix angle of the helical teeth is 23.5°-24.4°.

[0009] In some embodiments, the number of helical teeth is 4 to 13.

[0010] In some embodiments, the pitch circle pitch of the helical teeth is 5.4mm-5.6mm.

[0011] In some embodiments, the tooth tip circle diameter of the gear ring is 19.4mm-19.6mm, and / or the tooth root circle diameter of the gear ring is 27.4mm-27.6mm.

[0012] In some embodiments, the axial length of the wheel body is 40mm-50mm, and the tooth width of the gear ring is 25mm-35mm.

[0013] In some embodiments, the drive head is a square head, a pentagonal head, or a hexagonal head.

[0014] In some embodiments, both the internal gear and the drive head are made of steel.

[0015] In some embodiments, the steel used to make the internal gear and the drive head has a yield strength of 450 MPa-650 MPa and a tensile strength of 600 MPa-800 MPa.

[0016] By implementing this utility model, the following beneficial effects can be achieved:

[0017] This utility model discloses a torque testing tool for the rotating threaded gear at the drive end of a brake motor. It includes an internal gear and a drive head. The drive head is fixedly connected to or integrally formed with the first end of the internal gear, and the drive head protrudes from the internal gear. The internal gear includes a wheel body and a gear ring that meshes with the rotating threaded gear. The height of the gear ring along the axial direction of the wheel body is less than the axial height of the wheel body. The axes of the drive head, the gear ring, and the wheel body coincide. The rotating threaded gear is fixed by meshing with the gear ring, and the internal gear is twisted by the drive head connected to the tool, thus achieving torque transmission. This torque testing tool for the rotating threaded gear at the drive end of a brake motor allows for quick installation, effective fastening, convenient assembly and disassembly, and ensures accurate torque testing. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a torque verification tool for the rotating threaded gear at the drive end of a brake motor according to an embodiment of this utility model.

[0020] Figure 2 yes Figure 1 Side view of the torque test tool for the rotating threaded gear at the drive end of the brake motor;

[0021] Figure 3 yes Figure 1 A top view of the torque test tool for the rotating threaded gear at the drive end of the brake motor;

[0022] Figure 4 yes Figure 3A sectional view of the torque test tool for the rotating threaded gear at the drive end of the brake motor. Detailed Implementation

[0023] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a chemical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] See Figure 1 and Figure 2 One embodiment of this utility model discloses a torque verification tool for a rotating threaded gear at the drive end of a brake motor, comprising an internal gear 1 and a drive head 2. The drive head 2 is fixedly connected to or integrally formed with the first end of the internal gear 1, and the drive head 2 protrudes from the internal gear 1. The drive head 2 is used for connecting external tools, such as wrenches or sockets. The internal gear 1 is used for meshing with the rotating threaded gear to transmit torque. The drive head 2 is fixedly connected to the first end of the internal gear 1, for example, by welding or fastening. The drive head 2 and the internal gear 1 can also be integrally formed, for example, by 3D printing.

[0028] See you together Figure 3 The internal gear 1 includes a gear body 3 and a gear ring 4 that meshes with a rotating threaded gear. The height of the gear ring 4 along the axial direction of the gear body 3 is less than the axial height of the gear body 3. The axes of the drive head 2, the gear ring 4, and the gear body 3 are coincident. The gear body 3 and the gear ring 4 are integrally formed. The thickness and length of the gear body 3 can be set according to actual needs, such as matching the hardness and strength required by the rotating threaded gear, to prevent twisting and deformation. The coincidence of the axes of the drive head 2, the gear ring 4, and the gear body 3 ensures the effectiveness of torque transmission.

[0029] This torque testing tool for the rotating threaded gear at the drive end of the brake motor fixes the rotating threaded gear by meshing with the gear ring 4, and transmits torque by connecting the tool to the drive head 2 to twist the internal gear 1. This tool allows for quick installation, effective tightening, convenient assembly and disassembly, while ensuring accurate torque testing. It solves the problems of uneven bolt tightening force, slippage during torque application, inability to properly clamp the shaft, and inaccurate or failed torque testing in existing technologies.

[0030] In some embodiments, the gear ring 4 includes a plurality of helical teeth 5 that mesh with a rotating threaded gear, with at least two of the helical teeth 5 arranged opposite each other. Generally, the number of helical teeth 5 is 4 to 13. The number of helical teeth 5 is an integer, such as 4, 5, 8, 10, 13, etc., and all the helical teeth 5 are arranged symmetrically or as mechanically symmetrically as possible. Each helical tooth 5 can mesh with any tooth of the rotating threaded gear.

[0031] See you together Figure 4 In some embodiments, the helix angle of the helical tooth 5 is 23.5°-24.4°. The angle of the helix angle of the helical tooth 5 is consistent with the helix angle of a single tooth in a rotating threaded gear, such as 23.5°, 23.5°, 23.6°, 23.8°, 24.4°, etc., or the angle of the helix angle of the helical tooth 5 has an acceptable error compared with the helix angle of a single tooth in a rotating threaded gear.

[0032] In some embodiments, the pitch circle pitch of the helical tooth 5 is 5.4mm-5.6mm. The pitch circle pitch of the helical tooth 5 corresponds to the tooth groove in the rotating threaded gear, for example, 5.4mm, 5.5mm, 5.55mm, 5.6mm, etc. Or, the pitch circle pitch of the helical tooth 5 may have an acceptable error relative to the tooth groove in the rotating threaded gear.

[0033] In some embodiments, the addendum circle diameter of the gear ring 4 is 19.4mm-19.6mm, and / or the dedendum circle diameter of the gear ring 4 is 27.4mm-27.6mm. The addendum circle diameter of the gear ring 4 is the same as the dedendum circle diameter of the rotating threaded gear, for example, 19.4mm, 19.5mm, 19.54mm, 19.5mm, etc. Alternatively, the addendum circle diameter of the gear ring 4 is slightly larger than the dedendum circle diameter of the rotating threaded gear; for example, if the dedendum circle diameter of the rotating threaded gear is 19.5mm, then the addendum circle diameter of the gear ring 4 can be 19.6mm. The dedendum circle diameter of the gear ring 4 is the same as the addendum circle diameter of the rotating threaded gear, for example, 27.4mm, 27.45mm, 27.5mm, 27.6mm, etc. Alternatively, the root circle diameter of gear ring 4 can be slightly larger than the tip circle diameter of the rotating threaded gear. For example, if the tip circle diameter of the rotating threaded gear is 27.4 mm, then the tip circle diameter of gear ring 4 can be 27.5 mm. When the tip circle diameter of gear ring 4 is slightly larger than the root circle diameter of the rotating threaded gear, or vice versa, it must be selected within the allowable error range.

[0034] In some embodiments, the axial length of the wheel body 3 is 40mm-50mm, and the tooth width of the gear ring 4 is 25mm-35mm. The axial length of the wheel body 3 is greater than the tooth width of the gear ring 4, which refers to the length of the tooth width of the gear ring 4 along the axial direction of the wheel body 3. For example, the axial length of the wheel body 3 is 40mm, 45mm, 50mm, etc., and the tooth width of the gear ring 4 is 25mm, 30mm, 35mm, etc. Generally, the axial length of the wheel body 3 is at least 10mm greater than the tooth width of the gear ring 4 to ensure the strength of the wheel body 3. For example, if the axial length of the wheel body 3 is 40mm, the tooth width of the gear ring 4 can be 25mm, 27mm, 30mm, etc., with a maximum tooth width of 30mm.

[0035] In some embodiments, the drive head 2 is a square head, a pentagonal head, or a hexagonal head to facilitate connection to external tools. Alternatively, the drive head 2 can be configured with various head types, such as an internal hexagonal head or an external hexagonal head.

[0036] In some embodiments, both the internal gear 1 and the drive head 2 are made of steel, such as 316L steel. The 3D printing process, which involves integral molding, offers advantages such as high manufacturing precision and high tensile strength, eliminating the risk of slippage and inaccurate torque during torque testing. Furthermore, installation and disassembly are extremely simple and reliable.

[0037] In some embodiments, the steel used to manufacture the internal gear 1 and the drive head 2 has a yield strength of 450 MPa-650 MPa, a tensile strength of 600 MPa-800 MPa, and an elongation after fracture of 25%-55%. For example, yield strengths of 450 MPa, 550 MPa, 600 MPa, and 650 MPa, tensile strengths of 600 MPa, 680 MPa, 700 MPa, and 800 MPa, and elongation after fracture of 25%, 35%, 40%, and 55%, etc., are selected according to actual needs.

[0038] By implementing this utility model, the following beneficial effects can be achieved:

[0039] This utility model discloses a torque testing tool for the rotating threaded gear at the drive end of a brake motor. The rotating threaded gear is fixed by meshing with a gear ring 4, and the tool connects to the drive head 2 to twist the internal gear 1, thus achieving torque transmission. This torque testing tool for the rotating threaded gear at the drive end of a brake motor allows for quick installation, effective fastening, convenient assembly and disassembly, while ensuring the accuracy of torque testing.

[0040] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, without departing from the concept of the present utility model, the above embodiments or technical features can be freely combined, and several modifications and improvements can be made. These all fall within the protection scope of the present utility model, that is, the embodiments described "in some embodiments" can be freely combined with any of the embodiments above and below. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A tool for verifying the torque of a rotating threaded gear at the drive end of a brake motor, characterized in that, It includes an internal gear (1) and a drive head (2), wherein the drive head (2) is fixedly connected to the first end of the internal gear (1) or integrally formed, and the drive head (2) protrudes from the internal gear (1); The internal gear (1) includes a gear body (3) and a gear ring (4) that meshes with a rotating threaded gear. The height of the gear ring (4) along the axial direction of the gear body (3) is less than the axial height of the gear body (3). The axes of the drive head (2), the gear ring (4) and the gear body (3) coincide.

2. The band brake motor drive end rotation gear torque verification tool of claim 1, wherein, The gear ring (4) includes a plurality of helical teeth (5) that mesh with a rotating threaded gear, at least two of the helical teeth (5) being arranged opposite to each other.

3. The band brake motor drive end rotation gear torque verification tool of claim 2, wherein, The helix angle of the helical tooth (5) is 23.5°-24.4°.

4. The band brake motor drive end rotation gear torque verification tool of claim 2, wherein, The number of the helical teeth (5) is 4 to 13.

5. The band brake motor drive end rotation gear torque verification tool of claim 2, wherein, The pitch circle pitch of the helical tooth (5) is 5.4mm-5.6mm.

6. The band brake motor drive end rotation gear torque verification tool of claim 2, wherein, The tooth tip circle diameter of the tooth ring (4) is 19.4mm-19.6mm, and / or the tooth root circle diameter of the tooth ring (4) is 27.4mm-27.6mm.

7. The band brake motor drive end rotation gear torque verification tool of any of claims 1-6, wherein, The axial length of the wheel body (3) is 40mm-50mm, and the tooth width of the gear ring (4) is 25mm-35mm.

8. The band brake motor drive end rotation gear torque verification tool of any of claims 1-6, wherein, The drive head (2) is a four-cornered head, a five-cornered head, or a six-cornered head.

9. The band brake motor drive end rotation gear torque verification tool of any of claims 1-6, wherein, Both the internal gear (1) and the drive head (2) are made of steel.

10. The band brake motor drive end rotation gear torque verification tool of claim 9, wherein, The steel used to make the internal gear (1) and the drive head (2) has a yield strength of 450 MPa-650 MPa and a tensile strength of 600 MPa-800 MPa.

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