Clamp for measuring power of cylindrical motor

Abstract

The utility model discloses a clamp for measuring the power of a cylindrical motor, which comprises a bracket and a support, the support is arranged on the bracket, the support is provided with a first side wall and a second side wall which are used for supporting the peripheral surface of a motor to be measured, and the first side wall and the second side wall form an included angle; the device further comprises a pressing assembly for applying pressure to the tested motor, the pressing assembly comprises a connecting assembly, a cross beam and a pressure applying assembly for applying pressure to the tested motor, the connecting assembly is fixed to the support, the cross beam is fixed to the connecting assembly, and the pressure applying assembly is arranged on the cross beam. The utility model has the advantage that the tested motor is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the field of motors, in particular to a fixture for measuring the dynamometer of a cylindrical motor. Background Art

[0002] A dynamometer is a device that measures the output torque or drive torque of a machine. If the machine's rotational speed is also measured, the machine's output power or drive power can also be calculated. Dynamometers are primarily used to measure the shaft power characteristics of machines such as generators, electric motors, internal combustion engines, gas turbines, and pumps.

[0003] For dynamometer testing of cylindrical motors, the motor to be tested needs to be clamped with a fixture before measurement and connected to the dynamometer after adjusting the concentricity. The motor to be tested and the dynamometer are on the same horizontal axis. However, the existing fixture structure is relatively complex, and it is inconvenient to replace the motor. Moreover, the fixture is limited to installing small-sized motors to be tested. For large-sized motors, the replacement operation space is limited. Utility Model Content

[0004] The utility model provides a cylindrical motor dynamometer fixture. The utility model has a simple structure and is convenient for replacing the motor to be measured.

[0005] The technical solutions to the above technical problems are as follows:

[0006] A cylindrical motor dynamometer fixture comprises a bracket and a support, wherein the support is arranged on the bracket, and the support has a first side wall and a second side wall for supporting the circumference of the motor to be measured, and the first side wall and the second side wall form an angle;

[0007] It also includes a clamping assembly for applying pressure to the motor under test. The clamping assembly includes a connecting assembly, a beam, and a pressure assembly for applying pressure to the motor under test. The connecting assembly is fixed to the support, the beam is fixed to the connecting assembly, and the pressure assembly is arranged on the beam.

[0008] The process of clamping the motor under test by using the present invention is as follows: the motor under test is placed on a support, and the circumference of the motor under test is supported by the first side wall and the second side wall on the support, so that the freedom of two parts of the circumference of the motor under test is restricted, and then the circumference of the motor under test is pressed by the clamping assembly, so that the self-positioning of the third part of the motor under test is restricted, so that the motor under test is clamped between the support and the clamping assembly. When the motor under test needs to be replaced, the clamping assembly is released, the tested motor is removed, and the motor under test that needs to be tested can be clamped in the above manner. During the replacement process, if the motor under test is of the same model, the clamp only needs to operate the clamping assembly, so it has the advantage of being convenient to replace the motor under test. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1This is the assembly diagram of the cylindrical motor dynamometer fixture, the motor under test, and the dynamometer.

[0010] Figure 2 This is the assembly drawing of the fixture for measuring the dynamometer of a cylindrical motor.

[0011] Figure 3 For Figure 2 A schematic diagram showing a part of the components hidden and viewed from another direction.

[0012] Figure 4 Schematic diagram of a cylindrical motor dynamometer fixture equipped with an arc-shaped pressure block.

[0013] Bracket A, first bracket 11, first screw mechanism 12, first movable component 12a, first base 13, second screw mechanism 14, second movable component 14a, first positioning screw 15, second positioning screw 16.

[0014] Support B, first support 20 , first side wall 21 , second side wall 22 , first mounting hole 23 , nylon pad 24 .

[0015] Pressing assembly C, crossbeam 31 , connecting rod 32 , first nut 33 , second nut 34 , pressure driver 35 , pressure head 36 , arc-shaped pressure block 37 .

[0016] Dynamometer D, motor under test E, coupling F. DETAILED DESCRIPTION

[0017] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementations.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0020] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0021] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0022] like Figures 1 to 3 As shown, the cylindrical motor dynamometer fixture of this embodiment includes a bracket A, a support B, and a pressing assembly C for applying pressure to the motor E to be tested. The following describes in detail the various parts and the relationship between them.

[0023] The bracket A includes a first drive assembly that drives the support B to rise and fall, and a second drive assembly that drives the first drive assembly to translate horizontally. The support B is connected to the first drive assembly, which is in turn connected to the second drive assembly. When the motor E under test is clamped by the fixture of the present invention, the height of the support B can be adjusted by the first drive assembly, and the horizontal position of the support B can be adjusted by the second drive assembly to ensure that the axis of the motor E under test and the dynamometer D are aligned as much as possible. The motor E under test and the dynamometer D are typically connected by a coupling F.

[0024] The first drive assembly includes a first bracket 11 and a first screw mechanism 12 connected to the support B. The first screw mechanism 12 is installed on the first bracket 11. The support B is fixed to the first movable component 12a in the first screw mechanism 12. The first movable component 12a is composed of a first nut and a first slide fixed to the first nut. The support B is fixed to the first slide, and the first slide is slidably matched with the first bracket 11.

[0025] The first drive assembly further includes a first positioning screw 15, which is threadedly connected to the first bracket 11. When the first movable assembly 12a in the first screw mechanism 12 is moved to a desired position, the first positioning screw 15 is rotated so that the end of the first positioning screw 15 abuts against the first movable assembly 12a in the first screw mechanism 12, thereby positioning the first movable assembly 12a in the first screw mechanism 12. When the first movable assembly 12a needs to be moved, the first positioning screw 15 is rotated in the opposite direction to separate the first positioning screw 15 from the first movable assembly 12a. The screw in the first screw mechanism 12 is then rotated to drive the first movable assembly 12a to move linearly.

[0026] The second driving assembly includes a first base 13 and a second screw mechanism 14. The second screw mechanism 14 is installed on the first base 13. The first bracket 11 is connected to the second screw mechanism 14. The first bracket 11 is connected to the second movable assembly 14a in the second screw mechanism 14. The second movable assembly 14a is composed of a second nut and a second slide fixed to the second nut. The second slide is slidably matched with the first base 13, and the first bracket 11 is fixed to the second slide.

[0027] The second drive assembly also includes a second positioning screw 16, which is threadedly connected to the first base 13. When the second movable assembly 14a in the second screw mechanism 14 is moved to a desired position, the second positioning screw 16 is rotated so that the end of the second positioning screw 16 abuts against the second movable assembly 14a, thereby positioning the second movable assembly 14a. When it is necessary to move the second movable assembly 14a, the second positioning screw 16 is rotated in the opposite direction to separate the second positioning screw 16 from the second movable assembly 14a. The screw in the second screw mechanism 14 is then rotated to drive the second movable assembly 14a to move linearly.

[0028] Support B is mounted on bracket A. Support B has a first side wall 21 and a second side wall 22 for supporting the circumference of the motor E under test. The first side wall 21 and the second side wall 22 form an angle. In this embodiment, support B includes a first support 20. The first support 20 is L-shaped, with first mounting holes 23 defined at each end of the L-shaped first support 20. In this embodiment, multiple first mounting holes 23 are defined at each end of the L-shaped first support 20. The clamping assembly C cooperates with the first mounting holes 23. The axial direction of the first mounting holes 23 is inclined relative to the horizontal direction of the first support 20, i.e., the first mounting holes 23 are arranged at an angle.

[0029] The support B also includes a nylon pad 24, which is fixed on the first support 20. The cross-section of the nylon pad 24 is L-shaped, and the first side wall 21 and the second side wall 22 are two mutually perpendicular side walls on the L-shaped nylon pad 24. Through the action of the nylon pad 24, the motor E under test can be isolated from the first support 20, thereby preventing the first support 20 from being worn. Since the nylon pad 24 has wear-resistant properties, the coaxiality of the motor E under test and the dynamometer D after connection can still be ensured during long-term use.

[0030] The clamping assembly C applies pressure to the motor under test E. The clamping assembly C can be one or more sets. Each set of clamping assemblies C includes a connecting assembly, a crossbeam 31, and a pressure assembly for applying pressure to the motor under test E. The connecting assembly is fixed to the support B, the crossbeam 31 is fixed to the connecting assembly, and the pressure assembly is mounted on the crossbeam 31. When the motor under test E is aligned with the first side wall 21 and the second side wall 22, that is, supported by the nylon pad 24, the clamping assembly C applies pressure to the motor under test E, thereby positioning the motor under test E on the nylon pad 24.

[0031] The connecting assembly includes a connecting rod 32, a first nut 33, and a second nut 34. Connecting rod 32 is secured to support B. Connecting rod 32 is a threaded rod, and first mounting hole 23 is a threaded hole. Connecting rod 32 and first mounting hole 23 are threadedly connected, securing connecting rod 32 to support B. Connecting rod 32 passes through beam 31. First nut 33 and second nut 34 are threadedly connected to connecting rod 32, respectively. First nut 33 is located on one side of beam 31, and second nut 34 is located on the other side of beam 31. Beam 31 is clamped between first nut 33 and second nut 34. The connecting assembly supports beam 31, suspending it above support B.

[0032] The pressure assembly includes a pressure driver 35 and a pressure head 36, and the pressure driver 35 is connected to the pressure head 36. The pressure driver 35 can be a manual screw or a linear driver, and the linear driver can be an air cylinder, a hydraulic cylinder, etc.

[0033] In this embodiment, the pressure driver 35 is described using a manually operated screw as an example. The pressure driver 35 passes through the crossbeam 31 and is threadedly connected to the crossbeam 31. The pressure head 36 is connected to the pressure driver 35, for example, the pressure head 36 is fixedly connected to the pressure driver 35. When the pressure driver 35 is manually rotated, the pressure driver 35 drives the pressure head 36 toward the circumference of the motor E under test, ultimately causing the pressure head 36 to press against the circumference of the motor E under test.

[0034] The present invention is not limited to the above embodiments, for example:

[0035] like Figure 4As shown, the pressure head 36 is movably connected to the pressure driver 35, for example, the pressure head 36 is connected to the pressure driver 35 through a bearing (not shown in the figure), so that the pressure head 36 can rotate relative to the pressure driver 35; this method also includes an arc-shaped pressure block 37 for cooperating with the peripheral surface E of the motor to be measured, and the arc-shaped pressure block 37 is fixed to the pressure head 36.

[0036] When the pressure driver 35 uses a manual screw, when the operator rotates the manual screw with one hand, the operator's other hand forms a circumferential restriction on the pressure head 36, so that the pressure head 36 will not rotate with the pressure driver 35. As the manual screw is rotated, the manual screw feeds toward the circumference of the motor E under test, thereby the manual screw drives the pressure head 36 to feed toward the circumference of the motor E under test, and finally the pressure head 36 and the arc-shaped pressure block 37 are both pressed on the circumference of the motor E under test. The action of the arc-shaped pressure block 37 helps to increase the contact area between the clamping component C and the motor E under test, so that the clamping component C can better restrict the motor E under test.

Claims

1. A fixture for measuring dynamometer of a cylindrical motor, comprising a bracket (A) and a support (B), wherein the support (B) is arranged on the bracket (A), and is characterized in that: The support (B) has a first side wall (21) and a second side wall (22) for supporting the peripheral surface of the motor (E) to be measured, and the first side wall (21) and the second side wall (22) form an angle; The device also includes a pressing assembly (C) for applying pressure to the motor (E) under test. The pressing assembly (C) includes a connecting assembly, a crossbeam (31), and a pressure assembly for applying pressure to the motor (E) under test. The connecting assembly is fixed to the support (B), the crossbeam (31) is fixed to the connecting assembly, and the pressure assembly is arranged on the crossbeam (31).

2. The cylindrical motor dynamometer fixture according to claim 1, characterized in that: The support (A) comprises: a first driving assembly for driving the support (B) to move up and down, the support (B) being connected to the first driving assembly; The second driving assembly drives the first driving assembly to translate in the horizontal direction, and the first driving assembly is connected to the second driving assembly.

3. The cylindrical motor dynamometer fixture according to claim 2, characterized in that: The first driving assembly comprises: a first bracket (11), a first screw mechanism (12) connected to the support (B), and the first screw mechanism (12) is mounted on the first bracket (11); The second driving assembly comprises a first base (13) and a second screw mechanism (14). The second screw mechanism (14) is mounted on the first base (13). The first bracket (11) is connected to the second screw mechanism (14).

4. The cylindrical motor dynamometer fixture according to claim 1, characterized in that: The support (B) includes: A first support (20), wherein the first support (20) is L-shaped; Both ends of the L-shaped first support (20) are respectively provided with first mounting holes (23), and the pressing assembly (C) cooperates with the first mounting holes (23).

5. The cylindrical motor dynamometer fixture according to claim 4, characterized in that: The support (B) further comprises a nylon pad (24), which is fixed on the first support (20). The cross section of the nylon pad (24) is L-shaped, and the first side wall (21) and the second side wall (22) are two mutually perpendicular side walls on the L-shaped nylon pad (24).

6. The cylindrical motor dynamometer fixture according to claim 1, characterized in that: The connecting assembly comprises a connecting rod (32), a first nut (33), and a second nut (34). The connecting rod (32) is fixed to the support (B), and the connecting rod (32) passes through the crossbeam (31). The first nut (33) and the second nut (34) are respectively threadedly connected to the connecting rod (32). The first nut (33) is located on one side of the crossbeam (31), and the second nut (34) is located on the other side of the crossbeam (31). The crossbeam (31) is clamped between the first nut (33) and the second nut (34).

7. The cylindrical motor dynamometer fixture according to claim 1, characterized in that: The pressure-applying assembly comprises a pressure-applying driver (35) and a pressure head (36), wherein the pressure-applying driver is connected to the pressure head.

8. The cylindrical motor dynamometer fixture according to claim 7, characterized in that: The pressure driver (35) passes through the crossbeam (31) and is threadedly connected to the crossbeam (31), and the pressure head (36) is connected to the pressure driver (35).

9. The cylindrical motor dynamometer fixture according to claim 7, characterized in that: The pressure head (36) is movably connected to the pressure driver (35), so that the pressure head (36) can rotate relative to the pressure driver (35); It also includes an arc-shaped pressing block (37) for cooperating with the peripheral surface of the motor (E) to be measured, and the arc-shaped pressing block (37) is fixed to the pressure head (36).

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