CN210650472U - Push rod extracting tool - Google Patents

Abstract

There is provided a push rod removal tool comprising: a push rod engaging portion including a mounting groove extending in a first direction for mounting a push rod; a slide bar portion having one end fixed to the push rod engaging portion; a stopper portion fixed to the other end of the slide bar portion; and a sliding mass mounted to the sliding rod such that the sliding mass is slidable on the sliding rod and is blocked by the stopper. The push rod dismounting tool can realize convenient and low-cost push rod dismounting.

Description

Push rod extracting tool

Technical Field

Embodiments of the present disclosure relate to a push rod removal tool.

Background

A coil inserting machine is a device for inserting coils into teeth forming magnetic poles of a stator core of an electric motor. A push rod is included as a coil inserting machine for pushing a slot wedge into a slot of an iron core. In some cases, the push rod may be damaged. Typically, a new push rod is used to eject the damaged push rod. However, this may cause damage to the new push rod, thereby increasing maintenance costs.

SUMMERY OF THE UTILITY MODEL

At least one embodiment of the present disclosure provides a push rod removal tool, comprising: a push rod engaging portion including a mounting groove extending in a first direction for mounting a push rod; a slide bar portion having one end fixed to the push rod engaging portion; a stopper portion fixed to the other end of the slide bar portion; and a sliding mass mounted to the sliding rod such that the sliding mass is slidable on the sliding rod and is blocked by the stopper.

The push rod removal tool may allow an operator to conveniently and inexpensively remove a damaged push rod from a coil inserting apparatus.

For example, in some embodiments, the slide bar portion extends in the first direction such that the sliding mass is slidable in the first direction.

For example, in some embodiments, the slide bar portion is a cylindrical bar having a center axis that is more than 0.5cm and less than 3cm from the bottom of the mounting slot.

For example, in some embodiments, the pushrod engaging portion further comprises a pushrod fixing member extending in a second direction perpendicular to the first direction for fixing the pushrod against an inner wall of the mounting groove.

For example, in some embodiments, the pushrod mount is a screw.

For example, in some embodiments, the sliding mass is a sliding through hole having the sliding rod portion passing therethrough, and has a mass greater than 2 kg.

For example, in some embodiments, the slide bar portion is removably secured to the push rod engaging portion.

For example, in some embodiments, the slide bar portion is greater than 20cm in length.

For example, in some embodiments, the slide bar portion is less than 50cm in length.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present disclosure, and therefore should not be considered as limiting the scope of protection, and for those skilled in the art, other related drawings may be obtained from the drawings without inventive effort.

FIG. 1 shows a perspective view of a push rod removal tool according to an embodiment of the present disclosure;

FIG. 2 illustrates a plan view of a push rod removal tool according to an embodiment of the present disclosure.

List of reference numerals:

pushrod engaging portion 110

Sliding bar portion 120

Stop portion 130

Sliding mass 140

Pushrod fixing member 112

Mounting groove 111

First direction X

Second direction Y

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. "upper", "lower", "left", "right", etc. are used merely to indicate relative positioning, and when the absolute positioning of the object being described is changed, the relative positioning may also be changed accordingly.

A stator of an electric motor includes a core including a yoke portion and a plurality of teeth portions as projections formed on an inner periphery of the yoke portion, and a coil wound around each of the teeth portions by a slot formed between adjacent ones of the teeth portions. The coil inserting machine is used to insert a previously wound coil into each slot of a core and then push an insertion member such as a slot wedge or an insulating paper into an opening portion of the slot by using a push rod. For example, the pusher may be understood as a member that is inserted into the slot together with a previously wound coil in order to restrict the coil inserted into the slot from protruding from the opening portion of the slot.

In some embodiments, the push rod may be inserted into the mounting through hole of the base of the wire inserting machine in an insertion direction along the longitudinal axis of the push rod by an interference fit, the base being driven by the drive mechanism to drive the push rod to travel along its longitudinal axis. For example, the direction of travel and the direction of insertion may be reversed. The travel of the push rod along its longitudinal axis causes the push rod to push the push-in member to be inserted into the opening of the core.

In some cases, the travel path of the pushrod may be blocked, for example, by incorrectly positioned insulation paper, a slot wedge, or the like, which results in damage to the pushrod. A new push rod is usually used to push the damaged push rod out of the mounting through hole of the base in a withdrawal direction opposite to the insertion direction. However, this may result in damage to the new push rod, resulting in waste.

Fig. 1 shows a perspective view of a push rod removal tool according to an embodiment of the present disclosure, and fig. 2 shows a plan view of a push rod removal tool according to an embodiment of the present disclosure.

As shown in fig. 1 and 2, the push rod removal tool includes a push rod engagement portion 110, a slide rod portion 120, a stop portion 130, and a sliding mass 140.

The push rod engaging portion 110 includes a push rod fixing member 112 and a mounting groove 111 extending in the first direction X. The mounting groove 111 is used to mount a push rod (not shown), and the push rod fixing member 112 is used to fix the push rod to the mounting groove 111. As shown in fig. 1, the pushrod engaging portion 110 includes two parallel side walls forming a mounting groove 111, and a pushrod fixing member 112, such as a screw. The push rod is placed into the mounting groove 111 such that the longitudinal axis of the push rod is parallel to the first direction X. The screw is screwed into one of the parallel side walls in a second direction Y perpendicular to the first direction X, and the end of the screw secures the push rod against the other parallel side wall, thereby securing the push rod into the push rod engaging portion 110. The push rod fixing member 112 extending in the second direction Y helps an operator's hand or tool not to interfere with a coil inserting machine (e.g., other push rods) to which the push rod is mounted when fixing the push rod in the push rod engaging portion 110. The present disclosure is not limited to this type of securing, however, and other putter fasteners may be used to secure the putter to the putter-engaging portion 110. For example, other pushrod fixing elements may engage, clamp, etc. the pushrod to the pushrod engaging portion 110.

One end of the slide bar portion 120 is fixed to the push rod engaging portion 110, and the slide mass 140 is mounted to the slide bar portion 120 such that the slide mass 140 can slide on the slide bar portion 120. A stop portion 130 is fixedly mounted to the other end of the slide bar portion 120 for blocking the sliding mass 140 from sliding off the slide bar portion 120.

For example, the slide bar portion 120 is a cylindrical bar extending in the first direction X, and the stopper portion 130 is a cylinder radially protruding from the slide bar portion 120 so as to have a diameter larger than that of the slide bar portion 120.

The push rod is mounted to the push rod engagement portion 110 such that the sliding mass 140 is remote from the base to which the push rod is mounted relative to the push rod and in the direction of withdrawal. Then, the sliding mass 140 is rapidly slid toward the stopping portion 130 from a side close to the push rod engaging portion 110, and when the sliding mass 140 is stopped by the stopping portion 130, it transmits kinetic energy to the push rod via the stopping portion 130, the slide rod portion 120 and the push rod engaging portion 110, thereby enabling the push rod to be pulled out of the mounting hole of the base in the withdrawing direction. Therefore, the push rod dismounting tool can simply and conveniently dismount the push rod from the base without requiring a large operation space and damaging other push rods.

The sliding mass 140 has a sliding through-hole through which the slide rod portion 120 passes. For example, the mass of the sliding mass 140 is greater than 2kg, or greater than 5 kg. The sliding of the large mass of the sliding mass 140 can generate more kinetic energy, thus enabling the push rod to be pulled out of the base more easily.

For example, the distance from the central axis of the slide bar portion 120 to the bottom of the mounting groove 111 is greater than 0.5cm and less than 3cm, or greater than 1cm and less than 2 cm. Too small a distance of the central axis of the slide rod portion 120 from the bottom of the mounting groove 111 (or, the distance of the sliding path of the sliding mass 140 to the push rod) may cause the push rod to interfere with the movement of the sliding mass 140. An excessive distance of the slide bar portion 120 from the bottom of the mounting groove 111 may cause more force components of the force received by the push rod to be applied in a direction deviating from the first direction X, thereby reducing the pulling action of the push rod by the push rod removing tool or causing damage to the mounting hole of the base.

For example, the length of the slide rod portion 120 is greater than 20cm, and thus, the slide mass 140 can have a sufficient slide stroke. For example, the length of the sliding rod portion 120 is less than 50cm, thereby reducing energy loss of the sliding mass 140 during sliding and avoiding inconvenience due to an excessive length of the push rod removing tool.

For example, in the present embodiment, the slide bar portion 120 is removably secured to the push rod engaging portion 110, such as by a threaded fit. The removable connection of the slide rod portion 120 and the push rod engaging portion 110 enables the sliding mass 140 to be replaced and facilitates storage and transportation of the push rod removal tool.

The scope of the present disclosure is not defined by the above-described embodiments but is defined by the appended claims and equivalents thereof.

Claims (9)

1. A push rod removal tool, comprising:

a push rod engaging portion including a mounting groove extending in a first direction for mounting a push rod;

a slide bar portion having one end fixed to the push rod engaging portion;

a stopper portion fixed to the other end of the slide bar portion; and

a sliding mass mounted to the slide rod such that the sliding mass is slidable on the slide rod and is blocked by the stop.

2. The push rod removal tool of claim 1,

the slide bar portion extends in the first direction such that the sliding mass is slidable in the first direction.

3. The push rod removal tool of claim 2,

the sliding rod portion is a cylindrical rod having a center axis that is spaced from the bottom of the mounting slot by a distance greater than 0.5cm and less than 3 cm.

4. The push rod removal tool of claim 1,

the push rod engagement portion further includes a push rod fixing member extending in a second direction perpendicular to the first direction for fixing the push rod against an inner wall of the mounting groove.

5. The push rod removal tool of claim 4,

the push rod fixing piece is a screw.

6. The push rod removal tool of claim 1,

the sliding mass block is provided with a sliding through hole for the sliding rod part to pass through, and the mass of the sliding mass block is more than 2 kg.

7. The push rod removal tool of claim 1,

the slide bar portion is removably secured to the push rod engaging portion.

8. The push rod removal tool of claim 1,

the length of the slide bar portion is greater than 20 cm.

9. The push rod removal tool of claim 8,

the length of the slide bar portion is less than 50 cm.

Images