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CN-224203224-U - Quick plug dabber of centrifugal switch test

CN224203224UCN 224203224 UCN224203224 UCN 224203224UCN-224203224-U

Abstract

The utility model relates to a quick plug mandrel for testing a centrifugal switch, which aims at solving the technical problems that the compression force of a test mandrel of the existing similar centrifugal switch products is difficult to adjust, the tightness is easy to change after repeated plug operation for many times, and the best state is difficult to reach. The inner side core rod of the ring opening groove on the positioning ring of the quick plug core rod is provided with through holes which are arranged at equal intervals, the exposed part of the movable block in the through holes is higher than the outer diameter of the core rod, the key point is that a cylindrical hole is arranged in the rod of the core rod, an elastic body is arranged in the cylindrical hole of the core rod, two ends of the elastic body in the cylindrical hole are respectively provided with a rear gasket and a front gasket, a small screw hole communicated with the flange of the rod body is arranged at the bottom of the cylindrical hole at the rear gasket, a front adjusting screw is arranged in the orifice of the cylindrical hole at the front gasket, an inner hexagonal hole is arranged at the top of the front adjusting screw, the elastic body is cylindrical sponge silica gel, and the end part of the rod of the core rod is correspondingly inclined with the inclined surface at the outer diameter of the movable block.

Inventors

  • LUO XIAOYUN

Assignees

  • 宁波市镇海宏业机电仪表有限公司

Dates

Publication Date
20260505
Application Date
20250516

Claims (10)

  1. 1. The quick plug mandrel for the centrifugal switch test comprises a mandrel (1), a positioning ring (4), an elastic body (5) and a movable block (6), wherein a flange at one end of the mandrel is provided with a mounting hole (101) for mounting and fixing a motor shaft, a positioning ring sleeved and limited and fixed in a step groove is arranged at a rod outer diameter step groove at the other end of the mandrel, a ring opening groove (401) is formed in the inner diameter of a ring opening of the positioning ring, through holes which are equidistantly formed in the rod body at the inner side of the ring opening groove are respectively formed in the rod body, movable blocks embedded into the through holes are respectively formed in the through holes, the inner diameters of the movable blocks respectively abut against the outer diameters of the elastic bodies in the mandrel, one ends of the outer diameters of the movable blocks respectively abut against the inner diameters below the ring opening groove of the positioning ring, the other ends of the outer diameters of the movable blocks respectively extend out of the ring opening groove of the positioning ring and are exposed, and the exposed part of the movable blocks is higher than the outer diameter of the mandrel; the novel plastic mandrel is characterized in that a cylindrical hole (102) is formed in a rod body of the mandrel (1), an elastic body (5) is arranged in the cylindrical hole of the mandrel, a rear gasket (3) and a front gasket (7) are respectively arranged at two ends of the elastic body in the cylindrical hole, a rear adjusting screw (2) is arranged in a small screw hole communicated with the flange of the rod body at the bottom of the cylindrical hole at the rear gasket, a front adjusting screw (8) is arranged in an orifice of the cylindrical hole at the front gasket, and an inner hexagonal hole (801) is formed in the top of the front adjusting screw.
  2. 2. The quick plug mandrel for the centrifugal switch test according to claim 1, wherein the outer diameter of the end part of the movable block (6) exposed out of the mandrel on one side of the mandrel (1) is reduced in a 4-degree taper, the outer diameter of the end part of the movable block exposed out of the movable block on one side of the mandrel is respectively an inclined plane (601) which is larger than 4 degrees and smaller than 6 degrees, the diameter of one end of the inclined plane of the movable block is larger than 0.35mm of the diameter of the other end, and the diameter of one end of the through hole of the mandrel is larger than 0.6mm of the diameter of the end part.
  3. 3. The centrifugal switch test quick plug mandrel according to claim 2, wherein one end of an inclined plane (601) of the inner diameter of the movable block (6) is raised in a step mode and wedged on the inner wall of the through hole of the mandrel (1), the outer diameter of the other end of the movable block is propped against a low-step groove (402) below a ring opening groove (401) of the positioning ring (4) respectively, and the depth of the low-step groove is smaller than 0.2mm.
  4. 4. The quick plug mandrel for the centrifugal switch test according to claim 2, wherein the length from the center of the through hole of the mandrel (1) to one side of the flange is two thirds of the total length of the mandrel, the length of the movable block (6) is one third of the total length of the rod body of the mandrel, and the width is 0.4mm.
  5. 5. The quick plug mandrel for testing the centrifugal switch according to claim 2, wherein the elastic body (5) is cylindrical sponge silica gel, and the elastic body deforms the elastic body in the mandrel (1) through an inner hexagonal hole (801) of the front adjusting screw (8) to adjust the tightness interval of the pressing force between the elastic body and the movable block (6).
  6. 6. The centrifugal switch test quick connect disconnect spindle of claim 5, characterized in that the screw aperture at the rear adjustment screw (2) is one half of the screw aperture at the front adjustment screw (8).
  7. 7. The quick plug mandrel for testing the centrifugal switch according to claim 1, wherein the mounting hole (101) of the mandrel (1) is fixedly arranged on a motor shaft extending out of a test motor seat (10), a test switch sheet (12) is fixedly arranged on the end face of the motor shaft extending out of the test motor seat, wiring terminals of the test switch sheet are respectively clamped by a test wire clamp (11) and connected with a power supply in parallel, a positioning ring (4) at the mandrel is higher than the test switch sheet, central holes at the base sheet metal (1301) of the test centrifugal switch body (13) are respectively plugged and sleeved into the outer diameter of the mandrel extending out of the positioning ring one by one and abut against a movable block (6) exposed out of the mandrel, and the test wire clamp is electrified through an automatic power-on/off switch at a wiring position to enable the test centrifugal switch body to be automatically closed and rotated through springs arranged in a two-side symmetrical mode and centrifugal pushing pieces arranged on two sides.
  8. 8. The quick plug mandrel for testing the centrifugal switch according to claim 7 is characterized in that at least three cylinder ejector rods (9) which are equidistantly arranged are arranged on the outer side of a motor shaft of the test motor base (10), the cylinder ejector rods are L-shaped, the L-shaped ends of the cylinder ejector rods are positioned below a test centrifugal switch body (13) with the outer diameter of a positioning ring (4), the test centrifugal switch body is inserted into the mandrel (1) and is waited to be powered off by an automatic power-on/off switch and started by a delay switch in a delay mode, so that the rotation of the test centrifugal switch body is stopped, the cylinder ejector rods extend out simultaneously and push out of the test centrifugal switch body from the mandrel, then the cylinder ejector rods automatically reset to wait for the next automatic telescopic operation, and the cylinder switch and the delay switch of the cylinder ejector rods are connected with the automatic power-on/off switch through circuits.
  9. 9. Centrifugal switch test quick-connect-disconnect spindle according to claim 8, characterized in that the cylinder rams (9) are operated synchronously by means of cylinders, respectively, or by means of cylinder cylinders at the bottom of the cylinder block provided with cylinder rams.
  10. 10. The quick plug mandrel for testing the centrifugal switch according to claim 8, wherein a baffle protection seat for pushing out the test centrifugal switch body (13) through a cylinder ejector rod (9) is arranged at a front workbench of a mandrel (1) of the test motor seat (10) and aligned with the mandrel.

Description

Quick plug dabber of centrifugal switch test Technical Field The utility model relates to a centrifugal switch test mandrel for testing a centrifugal switch, in particular to a quick plug mandrel for testing the centrifugal switch. Background The centrifugal switch is a switching device for controlling the starting coil of a single-phase motor, and is usually arranged on the rotor of the motor, and a circuit is connected in series with the starting circuit, and is mainly used for controlling the starting coil of the single-phase motor, namely, the switch is turned on when the rotor is static, and is turned off when a certain rotating speed is reached. The centrifugal switch is mainly composed of two parts, including a centrifugal mechanism rotating around a motor shaft, and a fixed switch (switch piece) having an electric contact device. The centrifugal switch product and the like need to be detected before delivery, the detection is generally realized by quick plug detection under the electrified state of a centrifugal switch test shaft core and a switch sheet which are arranged on a motor shaft, but the conventional centrifugal switch test shaft core is generally not adjustable, rubber is filled under a chuck, the elasticity of the rubber needs to be adjusted by manual operation, the whole assembly is difficult, sometimes very tight, very heavy, operation is very laborious, sometimes very light and very loose, and the axial position changes when the centrifugal switch test shaft core is tested. Disclosure of Invention In order to overcome the defects, the utility model aims to provide a quick plug mandrel for testing a centrifugal switch in the field, so that the technical problems that the compression force of a test mandrel of the existing similar centrifugal switch products is difficult to adjust, the tightness is easy to change after repeated plug operation for many times, and the best state is difficult to achieve are solved. The aim is achieved by the following technical scheme. The utility model provides a quick plug dabber of centrifugal switch test, this quick plug dabber includes plug, retainer plate, elastomer and movable block, the flange department of plug one end is equipped with the mounting hole that installs and be fixed in the motor shaft, and the outer diameter step groove department of the stick body of plug other end is equipped with the retainer plate that embolias and spacing be fixed in the step groove, and the mouth department internal diameter of retainer plate is equipped with the mouth groove, the plug department stick body of mouth groove department inboard is equipped with the equidistance and sets up the through-hole, and through-hole department is equipped with the embedding respectively the movable block of through-hole, when the internal diameter of movable block offsets with the internal elastomer external diameter of plug respectively, the external diameter one end of movable block offsets with the mouth groove department below internal diameter of retainer plate respectively, and the external diameter other end of movable block stretches out respectively and exposes the mouth groove of retainer plate, and the exposed part of movable block exceeds the external diameter of plug. The key point of the structural design is that a cylindrical hole is formed in a rod body of the core rod, an elastic body is arranged in the cylindrical hole of the core rod, a rear gasket and a front gasket are respectively arranged at two ends of the elastic body in the cylindrical hole, a rear adjusting screw is arranged in a small screw hole communicated with the bottom of the cylindrical hole at the rear gasket and the flange of the rod body, a front adjusting screw is arranged in a hole opening of the cylindrical hole at the front gasket, and an inner hexagonal hole is formed in the top of the front adjusting screw. The outer diameter of the end part of the movable block, which is exposed out of the core rod on one side of the core rod, is reduced in a 4-degree conical manner, the outer diameter of the end part of the movable block, which is exposed out of the movable block on one side of the core rod, is respectively an inclined plane which is larger than 4 degrees and smaller than 6 degrees, the diameter of one end of the inclined plane of the movable block is larger than 0.35mm of the diameter of the other end, and the diameter of one end of the through hole of the core rod is larger than 0.6mm of the diameter of the end part. One end of the inclined surface of the inner diameter of the movable block is raised in a step manner and wedged on the inner wall of the through hole of the core rod, the outer diameter of the other end of the movable block is propped against the lower step groove below the ring opening groove of the positioning ring respectively, and the depth of the lower step groove is smaller than 0.2mm. The length from the center of the through hole of the core rod to one si