CN212044188U - Quick-replacement grinding wheel structure of motor - Google Patents

Abstract

The utility model belongs to the field of motors, in particular to a structure for rapidly replacing a grinding wheel of a motor, which comprises a motor rotor shaft and a motor casing. The shaft center of the motor rotor shaft is provided with a through hole horizontally. A pull rod is inserted into the small diameter section of the through hole, the left end of the pull rod is fixed with a sliding sleeve, the sliding sleeve is inserted into the first middle diameter section, and the upper part of the sliding sleeve is along the circumference Steel balls are evenly distributed, a conical grinding head shaft is inserted into the sliding sleeve, the conical grinding head shaft is limited by the displacement of the steel ball when the sliding sleeve slides in the first middle diameter section, and there is a spring sleeve in the second middle diameter section On the pull rod, the right end of the pull rod is threadedly connected with a spring limit block, the spring limit block is located in the second middle diameter section, a pressure plate is fixed on the motor shell, and a push rod capable of horizontal telescopic movement is installed on the pressure plate. The push rod and the pull rod Located on the same horizontal line, the beneficial effect of the utility model is to realize the rapid replacement of the grinding wheel.

Description

A structure for quick replacement of grinding wheel by motor

technical field

The utility model belongs to the field of motors, in particular to a structure for rapidly replacing a grinding wheel by a motor.

Background technique

The grinding wheel of the traditional glass edging machine needs to be installed on the output shaft of the motor, but usually the output shaft of the motor is very short, and the space for removing and installing the grinding wheel is very small. Another method is to connect an external coupling to the output shaft of the motor and then connect a A short shaft is used to install the grinding wheel, so that the motor output shaft and the grinding wheel installation shaft are separated. The market is in great demand for a motor that can install the grinding wheel directly from the factory, and the replacement of the grinding wheel is convenient and quick.

Utility model content

In order to solve the above problems, the utility model proposes a structure for rapidly replacing the grinding wheel by a motor.

This kind of motor quick-replacement grinding wheel structure includes a motor rotor shaft and a motor casing. It is characterized in that the shaft center of the motor rotor shaft is horizontally opened with a through hole, and the through hole is respectively a conical section, a large diameter section, a first middle section from left to right Diameter section, small diameter section and second middle diameter section, a pull rod is inserted into the small diameter section of the through hole, the left end of the pull rod is fixed with a sliding sleeve, the sliding sleeve is inserted into the first middle diameter section, and steel balls are evenly distributed along the circumference on the sliding sleeve. A conical grinding head shaft is inserted into the sliding sleeve, and the conical grinding head shaft is limited by the displacement of the steel ball when the sliding sleeve slides in the first middle diameter section. The right end is threadedly connected with a spring limit block, the spring limit block is located in the second middle diameter section, a pressure plate is fixed on the motor shell, and a push rod capable of horizontal telescopic movement is installed on the pressure plate, and the push rod and the pull rod are located on the same horizontal line.

Preferably, the right end of the shaft of the conical grinding head is provided with an annular groove, the section of the annular groove is U-shaped, and the steel ball is in sliding contact with the annular groove.

Preferably, the motor casing and the pressing plate are fixed by bolts.

Preferably, the left end of the pull rod is welded and fixed to the sliding sleeve.

Preferably, limit holes are evenly distributed along the circumference of the sliding sleeve, and the diameter of the limit holes near the shaft of the conical grinding head is smaller than the maximum diameter of the steel ball, so that the steel ball will not fall freely after the shaft of the conical grinding head is taken out.

The large-diameter section in the utility model means that the diameter of the through hole in this section is larger than that of the medium-diameter section and the small-diameter section, and the small-diameter section means that the through-hole diameter of this section is smaller than the through-hole diameter of the large-diameter section and the small-diameter section. The middle diameter section means that the diameter of the through hole in this section is between the diameters of the through holes of the large diameter section and the small diameter section. The beneficial effects of the utility model are as follows: firstly, the conical grinding head shaft and the motor are integrated into a whole; secondly, the conical grinding head shaft can be pushed out quickly, and the grinding wheel can be replaced conveniently.

Description of drawings

Fig. 1. Tightening conical grinding head shaft structural schematic diagram of the present utility model

Figure 2. Schematic diagram of the utility model structure of loosening the conical grinding head shaft

In Figures 1 to 2, 1. Motor rotor shaft, 2. Motor housing, 3. Through hole, 301, Conical section, 302, Large diameter section, 303, First middle diameter section, 304, Small diameter section, 305 , Second middle diameter section, 4, Pull rod, 5, Sliding sleeve, 6, Steel ball, 7, Conical grinding head shaft, 701, Ring groove, 12, Spring, 8, Spring limit block, 9, Bolt, 10 , platen, 11, ejector.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In Figures 1 to 2, the structure of the motor for rapid replacement of grinding wheels includes a motor rotor shaft 1 and a motor housing 2. The shaft center of the motor rotor shaft 1 is provided with a through hole 3 horizontally, and the through hole 3 is tapered from left to right. Section 301, large diameter section 302, first middle diameter section 303, small diameter section 304 and second middle diameter section 305, a pull rod 4 is inserted into the small diameter section 304 of the through hole 3, and the left end of the pull rod 4 is welded and fixed with a sliding sleeve 5, sliding The sleeve 5 is inserted into the first middle diameter section 303, and the limit holes 501 are evenly distributed along the circumference of the sliding sleeve 5. The diameter of the limit holes 501 near the shaft 7 of the conical grinding head is smaller than the maximum diameter of the steel ball 6, so that the conical grinding After the head shaft 7 is taken out, the steel balls 6 will not fall freely.

A conical grinding head shaft 7 is inserted into the sliding sleeve 5, the right end of the conical grinding head shaft 7 is provided with an annular groove 701, the cross section of the annular groove 701 is U-shaped, the steel ball 6 is in sliding contact with the annular groove 701, and the conical grinding head shaft 7. The position is limited by the displacement of the steel ball 6 when the sliding sleeve 5 slides in the first middle diameter section 303. The second middle diameter section 303 has a spring 12 sleeved on the pull rod 4, and the right end of the pull rod 4 is threadedly connected with a spring limit block 8. The spring limit block 8 is located in the second middle diameter section 305 and is locked in the second middle diameter section 305. The motor housing 2 is fixed with a pressure plate 10 through bolts 9, and the pressure plate 10 is installed with a horizontal telescopic movement. The ejector rod 11 is driven by a pneumatic or hydraulic or crank-link mechanism or a cam, and the ejector rod 11 and the pull rod 4 are located on the same horizontal line.

In use, the spring 12 pushes the spring limit block 8 to cause the pull rod 4 to pull the conical grinding head shaft 7, and the steel ball 6 is located in the first middle diameter section 303, so that the steel ball 6 is stuck in the annular groove 701, so that the conical grinding head The tapered surface of the shaft 7 is fitted with the tapered section 301. When the grinding wheel needs to be replaced, it is only necessary to push out the top rod 11 to push out the tie rod 4, and the steel ball 6 slides out of the annular groove 701, thereby removing the tapered grinding head shaft 7. After the grinding wheel is replaced, the ejector rod 11 returns, the spring 12 drives the pull rod 4 to reset, and the steel ball 6 is re-inserted into the annular groove 701, so that the tapered surface of the tapered grinding head shaft 7 is re-fitted with the tapered section 301.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. A structure for quickly replacing a grinding wheel of a motor comprises a motor rotor shaft and a motor shell and is characterized in that a through hole is horizontally formed in the axis of the motor rotor shaft and comprises a conical section, a large-diameter section, a first middle-diameter section, a small-diameter section and a second middle-diameter section from left to right, a pull rod is inserted into the small-diameter section of the through hole, a sliding sleeve is fixed at the left end of the pull rod and inserted into the first middle-diameter section, steel balls are uniformly distributed on the sliding sleeve along the circumference, a conical grinding head shaft is inserted into the sliding sleeve, the conical grinding head shaft is limited by the displacement of the steel balls caused by the sliding of the sliding sleeve in the first middle-diameter section, a spring is sleeved on the pull rod in the second middle-diameter section, the right end of the pull rod is in threaded connection with a spring limiting block, the spring limiting block is positioned in the second middle-diameter section, the motor shell is fixed with a pressing plate, the pressing plate is provided with a push rod capable of doing horizontal telescopic motion, and the push rod and the pull rod are positioned on the same horizontal line.

2. The structure for rapidly replacing the grinding wheel by the motor as claimed in claim 1, wherein the right end of the conical grinding head shaft is provided with an annular groove, the section of the annular groove is U-shaped, and the steel ball is in sliding contact with the annular groove.

3. The structure for rapidly replacing the grinding wheel of claim 1, wherein the motor housing and the pressing plate are fixed by bolts.

4. The structure for rapidly replacing the grinding wheel by the motor as claimed in claim 1, wherein the left end of the pull rod is welded and fixed with the sliding sleeve.

5. The structure for rapidly replacing the grinding wheel by the motor as claimed in claim 1, wherein the sliding sleeve is provided with a plurality of limiting holes uniformly distributed along the circumference, the diameter of the limiting holes close to the shaft side of the conical grinding head is smaller than the maximum diameter of the steel balls, and the steel balls are placed in the limiting holes.

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