A motor centering height adjusting device

Abstract

This utility model discloses a motor centering height adjustment device, comprising a base with a hollow cavity, a cam suspended within the hollow cavity, the cam being linked by a coaxial transmission rod, at least one end of the transmission rod protruding from the side wall of the base and fixedly connected to a rotating block; the rotating block being connected to a radially extending force rod; the top of the base being open and covered with a top plate, the top plate being supported by the cam and moving along the longitudinal surface where the top plate and the base fit together. This adjustment device eliminates the need to change the position of the set screw holes on the step itself when the model of the motor being tested changes, saving space at the bottom of the platform, allowing operation in confined spaces, and eliminating the need to consider the load-bearing capacity and diameter of the set screws, thus solving the problem of unchangeable set screw sizes; during adjustment, the cam achieves self-locking of the height without damaging the motor paint, exhibiting strong practicality and wide applicability.

Description

Technical Field

[0001] This utility model relates to a centering height adjustment device, specifically a deviation adjustment device for the centering height direction of a motor shaft, belonging to the field of motor testing technology. Background Technology

[0002] Currently, the height adjustment device used in the motor alignment process generally adopts a threaded hole designed at the bottom of the motor test bench. By rotating the set screw in the threaded hole, the height of the motor is adjusted, thereby achieving fine adjustment in the height direction of the motor shaft.

[0003] Problems with existing technology: First, it's necessary to pre-drill set screw holes in the motor test bench, and these holes must be located at the mounting position of the motor base. When the motor is replaced or the base position changes, the set screw positions will need to be adjusted. Ultimately, this results in frequent modifications to the test bench. However, motor test benches are generally quite heavy, making future modifications time-consuming and labor-intensive.

[0004] Secondly, during motor testing, the motor surface is usually already painted, and the motor set screws can easily damage the painted appearance of the motor base to varying degrees.

[0005] Furthermore, the adjusting set screw is usually located at the bottom of the motor stand, where the operating space is limited. When the motor is heavy and the size of the adjusting set screw increases, a large wrench space is required accordingly. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a motor centering height adjustment device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A motor centering height adjustment device includes a base with a hollow cavity inside. A cam is suspended in the hollow cavity. The cam is linked by a coaxial transmission rod. At least one end of the transmission rod protrudes through the side wall of the base and is fixed to a rotating block. The rotating block is connected to a radially extending force rod; The base has an open top and is covered with a top plate, which moves along the longitudinal surface where the top plate and the base fit together, supported by the cam.

[0008] Along the radial direction, the aforementioned rotating block is provided with cross holes for inserting a force-adding rod.

[0009] On both sides of the base, the bottom surface of the base is provided with an extension plate, and the outer end of the extension plate is provided with a U-shaped groove.

[0010] Furthermore, the aforementioned extension plate and rotating block are respectively placed on adjacent sides of the base.

[0011] At least one side of the top plate is provided with a half-waist hole, and the locking bolt is screwed through the half-waist hole to the bolt hole on the side of the base.

[0012] The advantages of this utility model are: The motor centering height adjustment device of this utility model has the following advantages: 1. When the model of the motor under test is changed and the centering height of the motor under test needs to be adjusted, there is no need to change the position of the set screw hole on the step itself.

[0013] 2. Saves space at the bottom of the platform. By moving the lever from the side, the motor height can be adjusted even in confined spaces.

[0014] 3. The height of the motor is adjusted by rotating the cam. The cam contact surface is larger than that of a regular set screw hole, which can bear a larger load. There is no need to consider the load-bearing capacity of the set screw or the diameter of the set screw, thus solving the problem of the set screw size not being able to be changed. 4. After height adjustment, the cam can self-lock at the height. Furthermore, during the adjustment process, the moving parts will not directly contact the motor, thus preventing any damage to the motor's paint.

[0015] This invention enables the adjustment of motor height during motor testing without modifying the existing test bench; it has strong practicality and wide applicability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the regulating device.

[0017] Figure 2 This is a schematic diagram of the cam structure.

[0018] Figure 3 This is a schematic diagram of the transmission rod.

[0019] The markings in the attached diagram have the following meanings: 1. Base, 2. Top plate, 3. Cam, 4. Transmission rod, 5. Rotating block, 6. Force rod, 7. Locking bolt. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] A motor centering height adjustment device consists of a base 1, a top plate 2, a cam 3, a transmission rod 4, and a force-applying rod 6.

[0022] The base is hollow inside and open at the top. Preferably, the base is a cuboid with extension plates on both sides of its bottom, and the outer ends of the extension plates are provided with U-shaped grooves for fixing.

[0023] The top plate is installed at the open end of the base, and the inner side of the top plate is in contact with the outer side of the base, with the contact surface along the longitudinal direction. That is, the top plate can slide longitudinally based on the contact surface.

[0024] A cam is suspended inside the cavity of the base. The rim of the cam contacts the bottom surface of the top plate. The cam is linked by a coaxial transmission rod. The two ends of the rotating rod are rotatably connected to the cavity wall of the base, and at least one end protrudes through the side wall of the base. The protruding end is fixed to a rotating block outside the base.

[0025] Along the radial direction of the rotating rod, the rotating block 5 is provided with several insertion holes for inserting a force-adding rod. Preferably, the insertion holes are cross holes, i.e., in a cross shape, and are respectively placed on the four sides of the rotating block. This facilitates the insertion of the force-adding rod into the insertion holes from various angles, applies pressure, and thus rotates the rotating block, which in turn rotates the cam in the base cavity. In turn, the rim of the cam supports the top plate, thereby achieving the adjustment of the top plate at different heights.

[0026] Preferably, the extension plate and the rotating block are placed on adjacent sides of the base.

[0027] Preferably, the cross-section of the rotating block is square.

[0028] At least one side of the top plate is provided with a half-waist hole, and the locking bolt 7 is screwed through the half-waist hole to the bolt hole on the side of the base.

[0029] Preferably, the locking bolt assemblies are a pair, respectively located on opposite sides of the top plate, as shown in the attached figure. Figure 2 As shown.

[0030] Usage process: The base is fixed on the motor test bench.

[0031] Applying force to the lever causes the transmission rod to drive the cam to rotate. When the cam rotates, the top plate can move in the height direction along with the rotation of the cam; the moving top plate drives the motor base to move in the height direction.

[0032] When the rotating block rotates, the force-adding rod can be inserted or removed by selecting a suitable angle of insertion hole, intermittently rotating the cam. During the insertion and removal of the force-adding rod, that is, after the force-adding rod is released, because the cam's stroke is small and the cam's contact pressure angle is extremely large, the friction between the top plate and the cam increases. This makes it difficult for the driven part to overcome the resistance and prevent it from continuing to move, thus causing a self-locking phenomenon. That is, when the force-adding rod is released, self-locking can be achieved at the height displacement of the top plate.

[0033] Adjust the top plate to a suitable height. Put the motor into test mode, tighten the bolts on the side of the top plate, press the side of the top plate against the side of the base, and lock it in place through friction to ensure that the vibration transmitted from the motor will not cause the top plate to move.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments do not limit this utility model in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A motor centering height adjustment device, characterized in that, Includes a base, the base having a hollow cavity, a cam suspended in the hollow cavity, the cam being linked by a coaxial transmission rod, at least one end of the transmission rod protruding through the side wall of the base and fixed to a rotating block; The rotating block is connected to a radially extending force rod; The base has an open top and is covered with a top plate, which moves along the longitudinal surface where the top plate and the base fit together, supported by the cam.

2. The apparatus according to claim 1, characterized in that, Along the radial direction, the rotating block is provided with cross holes for inserting a force-adding rod.

3. The apparatus according to claim 1, characterized in that, On both sides of the base, the bottom surface of the base is provided with an extension plate, and the outer end of the extension plate is provided with a U-shaped groove.

4. The apparatus according to claim 3, characterized in that, The extension plate and the rotating block are respectively placed on adjacent sides of the base.

5. The apparatus according to claim 1, characterized in that, At least one side of the top plate is provided with a semi-circular hole, and the locking bolt is screwed through the semi-circular hole to the bolt hole on the side of the base.

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