Air gap measuring tool

Abstract

An air gap measuring tool comprises a base plate, the base plate is in sliding fit with a sliding plate, the end portion of the sliding plate is provided with a wedge-shaped portion, the inclined face of the wedge-shaped portion is attached to the inclined face of an inclined sliding block, the inclined sliding block is connected with a sliding rod, the sliding rod is installed on a fixing block in a sliding mode, and the fixing block is connected with the base plate. The stator and rotor air gap measuring device can measure the stator and rotor air gap at a time, the steps are simple, the measuring time is saved, and the measuring precision is improved.

Description

Technical Field

[0001] The utility model belongs to the field of hydrological forecasting, and particularly relates to an air gap measuring tool. Background Art

[0002] The air gap refers to the air gap between the stator and the rotor. Measuring and studying the air gap is of great significance to the stable operation of the unit. When the generator is running, the magnetic flux generated by the rotor poles cuts the stator winding through the air gap, thereby generating an induced electromotive force at the end of the winding. After the load is added, the rotor will be affected by the electromagnetic force. If the gap is uneven, the electromagnetic force will also be uneven. The electromagnetic unbalanced force acts on the guide bearing of the unit, causing unit vibration and guide bearing wear.

[0003] At present, the method for measuring the air gap between the stator and rotor is to insert a pair of wedges into the gap by about 400mm, then pull out the wedges, restore them to the state when they were inserted, and use a vernier caliper to measure the thickness of the pair of wedges, that is, the air gap value. Since the measurement process requires several conversions, cumulative errors are inevitable. Secondly, there are many steps, which is time-consuming and inefficient. Since many tools are brought in, there may be risks such as leftover tools. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide an air gap measuring tool, which can measure the air gap of the stator and rotor at one time, has simple steps, saves measurement time, and helps to improve measurement accuracy.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] An air gap measuring tool comprises a base plate, which is slidably matched with a sliding plate, a wedge portion is provided at the end of the sliding plate, the inclined surface of the wedge portion fits with the inclined surface of an inclined sliding block, the inclined sliding block is connected to a sliding rod, the sliding rod is slidably mounted on a fixed block, and the fixed block is connected to the base plate.

[0007] Preferably, the base plate is a groove plate, and the sliding plate is slidably installed in the groove of the base plate.

[0008] Preferably, a locking bolt is provided on the base plate, and the locking bolt is used to fix the sliding plate.

[0009] Preferably, the fixed block is installed on the side of the base plate, the sliding plate is located between the fixed block and the base plate, and a first sliding groove is provided on the inner side of the fixed block, and the first sliding groove is slidably matched with the sliding plate.

[0010] Preferably, the sliding plate is a slot plate, and the side wall of the sliding plate is slidably matched with the first sliding slot.

[0011] Preferably, the side wall of the wedge-shaped portion is provided with an inclined slide groove, the inclination of the inclined slide groove is the same as the inclination of the inclined surface of the wedge-shaped portion, the inclined slide groove is slidably matched with the folding plate, and the folding plate is connected to the inclined sliding block; the sliding plate reciprocates horizontally to drive the inclined sliding block to move up and down.

[0012] Preferably, scale markings are provided on the substrate.

[0013] Preferably, a slide bar is used to measure the air gap.

[0014] Preferably, a second slide groove is provided on the sliding plate, a slide rail is provided on the inner side of the base plate, and the second slide groove cooperates with the slide rail.

[0015] The utility model can achieve the following beneficial effects:

[0016] The utility model can measure the air gap between the stator and the rotor at one time, has simple steps, saves measurement time, and helps to improve measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0018] Figure 1 The three-dimensional diagram of the utility model Figure 1 ;

[0019] Figure 2 The three-dimensional diagram of the utility model Figure 2 ;

[0020] Figure 3 The three-dimensional diagram of the utility model Figure 3 ;

[0021] Figure 4 This is a structural diagram of the fixed block of the utility model.

[0022] In the figure: base plate 1, sliding plate 2, wedge-shaped portion 3, inclined sliding block 4, sliding rod 5, fixing block 6, locking bolt 7, first sliding groove 8, inclined sliding groove 9, folding plate 10, scale mark 11, second sliding groove 12, and sliding rail 13. DETAILED DESCRIPTION

[0023] The preferred solution is Figures 1 to 4 As shown, an air gap measuring tool includes a base plate 1, the base plate 1 is slidably matched with a sliding plate 2, a wedge portion 3 is provided at the end of the sliding plate 2, the inclined surface of the wedge portion 3 is fitted with the inclined surface of an inclined sliding block 4, the inclined sliding block 4 is connected to a sliding rod 5, the sliding rod 5 is slidably mounted on a fixed block 6, and the fixed block 6 is connected to the base plate 1, specifically, the fixed block 6 is connected to the base plate 1 by bolts. The sliding rod 5 is used to measure the air gap. The part where the fixed block 6 is located is the measuring part.

[0024] The shape of the fixing block 6 can be selected as: a square block, a cylindrical block or a semicircular block. The fixing block 6 can be fully wrapped in the sliding plate 2 or half wrapped in the sliding plate 2.

[0025] Attach Figure 1 From the perspective of the slide plate 2, move the slide plate 2 to the left, the wedge 3 and the inclined slide block 4 slide relative to each other, and the inclined slide block 4 moves upward. On the contrary, move the slide plate 2 to the right, and the inclined slide block 4 moves downward. Definition: The inclined angle of the wedge 3 is A, the reference height of the slide bar 5 is H, and the length of the slide plate 2 moving to the left is L. Then the height increment of the slide bar 5 moving upward is △H=L·tanA, and the air gap is H+ L·tanA. Thus, a gap measurement is completed.

[0026] Preferably, the smaller the bevel angle A is set, the more accurate the reading of L will be and the smaller the measurement error will be.

[0027] In this embodiment, the base plate 1 is a groove plate, and the sliding plate 2 is slidably installed in the groove of the base plate 1. The base plate 1 is made of stainless steel, and the base plate 1 is sleeved on the outside of the sliding plate 2. The sliding plate 2 is made of stainless steel.

[0028] Furthermore, a locking bolt 7 is provided on the base plate 1, and the locking bolt 7 is used to fix the sliding plate 2. When the sliding plate 2 slides to the left to a state where it cannot slide, the locking bolt 7 is used to fix the sliding plate 2, and then the moving distance of the sliding plate 2 is read.

[0029] Furthermore, the fixed block 6 is mounted on the side of the base plate 1, the sliding plate 2 is located between the fixed block 6 and the base plate 1, and a first slide groove 8 is provided inside the fixed block 6, and the first slide groove 8 is slidably matched with the sliding plate 2. The first slide groove 8 is designed to prevent the sliding plate 2 from shaking or falling off.

[0030] Furthermore, the sliding plate 2 is a slot plate, and the side wall of the sliding plate 2 is slidably matched with the first sliding slot 8. The sliding plate 2 and the base plate 1 have similar structures, and the fixed block 6 has the following functions: on the one hand, it is used to limit the sliding plate 2; on the other hand, it is used as a basic block of the measuring part.

[0031] Furthermore, the side wall of the wedge-shaped portion 3 is provided with an inclined slide groove 9, the inclination of which is the same as the inclination of the inclined surface of the wedge-shaped portion 3, the inclined slide groove 9 is slidably matched with the folding plate 10, and the folding plate 10 is connected to the inclined slider 4; the sliding plate 2 reciprocates horizontally to drive the inclined slider 4 to move up and down. When the sliding plate 2 moves left and right, the inclined slider 4 can follow the movement.

[0032] Furthermore, a scale mark 11 is provided on the base plate 1. In the initial state of measurement, the end of the sliding plate 2 is located at the "0" scale mark 11, and the reference height of the sliding rod 5 is H at this time.

[0033] Furthermore, the sliding plate 2 is provided with a second sliding groove 12, and the inner side of the base plate 1 is provided with a sliding rail 13, and the second sliding groove 12 cooperates with the sliding rail 13 to further improve the sliding stability of the sliding plate 2.

[0034] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An air gap measurement tool, characterized in that: The invention comprises a base plate (1), the base plate (1) and a sliding plate (2) are slidably matched, a wedge-shaped portion (3) is provided at the end of the sliding plate (2), the inclined surface of the wedge-shaped portion (3) is fitted with the inclined surface of an inclined sliding block (4), the inclined sliding block (4) is connected to a sliding rod (5), the sliding rod (5) is slidably mounted on a fixed block (6), and the fixed block (6) is connected to the base plate (1).

2. An air gap measurement tool according to claim 1, characterized in that: The base plate (1) is a groove plate, and the sliding plate (2) is slidably mounted in the groove of the base plate (1).

3. The air gap measurement tool according to claim 1, characterized in that: A locking bolt (7) is provided on the base plate (1), and the locking bolt (7) is used to fix the sliding plate (2).

4. The air gap measurement tool according to claim 1, characterized in that: The fixed block (6) is mounted on the side of the base plate (1), the sliding plate (2) is located between the fixed block (6) and the base plate (1), a first sliding groove (8) is provided on the inner side of the fixed block (6), and the first sliding groove (8) is slidably matched with the sliding plate (2).

5. The air gap measurement tool according to claim 4, characterized in that: The sliding plate (2) is a slot plate, and the side wall of the sliding plate (2) is slidably matched with the first sliding slot (8).

6. The air gap measurement tool according to claim 1, characterized in that: The side wall of the wedge-shaped portion (3) is provided with an inclined slide groove (9), the inclination of the inclined slide groove (9) being the same as the inclination of the inclined surface of the wedge-shaped portion (3), the inclined slide groove (9) being slidably matched with the folding plate (10), and the folding plate (10) being connected to the inclined slide block (4); the sliding plate (2) is horizontally reciprocated to drive the inclined slide block (4) to move up and down.

7. The air gap measurement tool according to claim 1, characterized in that: A scale mark (11) is provided on the base plate (1).

8. The air gap measurement tool according to claim 1, characterized in that: The slide bar (5) is used to measure the air gap.

9. The air gap measurement tool according to claim 1, characterized in that: A second slide groove (12) is provided on the sliding plate (2), a slide rail (13) is provided on the inner side of the base plate (1), and the second slide groove (12) cooperates with the slide rail (13).

Images