CN214626724U

CN214626724U - Mouse cage type rotor core conducting bar tensioning tool

Info

Publication number: CN214626724U
Application number: CN202120617568.3U
Authority: CN
Inventors: 姜大伟
Original assignee: Nanjing Turbine & Electric Machinery Changfeng New Energy Co ltd
Current assignee: Nanjing Turbine & Electric Machinery Changfeng New Energy Co ltd
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2021-11-05
Anticipated expiration: 2031-03-26

Abstract

The utility model discloses a mouse cage type rotor core conducting bar tensioning tool, which comprises a base, a tensioning tool and a handle; the bottom circular arc of base is the same with the circular arc of rotor core excircle, and the bottom of base is equipped with two bosss, two interval between the boss is the same with the total distance of three iron core groove on the rotor core, and the middle part of base is equipped with inside hole, and tight instrument that rises is located the inside hole of base and the inside hole elastic connection of tight instrument and base that rises, tight instrument that rises and the little clearance fit of inside hole of base. The utility model has simple structure, the handle is the position where the guide bar tensioning tool is held by the operator, and the knocking point is kept away, so as to avoid the injury of the operator; the tensioning position can be ensured to be on the center of the guide strip during tensioning; the tension tool can be ensured not to be inclined when knocking and tensioning, and the iron core can not be damaged in the tensioning process; the tensioning tool is of a detachable structure, and after the expansion head is damaged, the small workpiece of the expansion head is replaced, so that the cost loss is reduced.

Description

Mouse cage type rotor core conducting bar tensioning tool

Technical Field

The utility model relates to a squirrel-cage generator, concretely relates to cage rotor core conducting bar rises and tightly installs.

Background

At present, the rotor (copper bar type) of a cage motor product produced in China needs to penetrate a formed copper bar (namely a conducting bar) into an iron core, the copper bar and the iron core are in clearance fit, and after the copper bar penetrates into the iron core, a clearance exists between the copper bar and the iron core. If not taking fastening measures, electric motor rotor can't rotate at a high speed, need strike the copper bar upper surface (the iron core is the open slot, has the gap with the copper bar upside) after the copper bar penetrates the iron core admittedly, make the copper bar produce deformation to reach the fixed purpose in copper bar and iron core.

The conventional iron core tensioning method comprises the steps of manufacturing a chisel (the head of a round steel is flattened and is subjected to heat treatment), placing the chisel at a position needing tensioning by one operator and stabilizing the chisel, and knocking the chisel by the other operator through an iron hammer to achieve the purpose of tensioning a guide bar, wherein the chisel has the following problems and risks:

1. the chisel is held by hand, the tensioning position of the chisel is controlled manually, and the tensioning position can not be ensured to meet the original design requirement;

2. when the chisel is knocked, if the chisel is not vertically arranged with the copper bar, the chisel can be inclined to damage the iron core;

3. when the chisel is knocked, if the position of the drop hammer is deviated, workers holding the chisel can be knocked to be injured, and work injuries are caused;

4. the chisel is repeatedly knocked, the head is extremely easy to damage, the chisel cannot be continuously used after the head is damaged, the consumption is extremely high, and the use cost is high;

5. after each knocking is finished, an operator holding the chisel needs to readjust the position of the chisel, the distance between two adjacent points to be tensioned on a single guide bar to be tensioned (a plurality of points to be tensioned are arranged on each guide bar) needs to be measured, the chisel is placed on the next point to be tensioned, the central position of the guide bar is accurately found, and the working efficiency is low.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a mouse cage type rotor core conducting bar tensioning tool aiming at the defects of the prior art, the mouse cage type rotor core conducting bar tensioning tool has simple structure, the handle is the position where the conducting bar tensioning tool is held by the operator, the knocking point is kept away, and the injury of the operator is avoided; the tensioning position can be ensured to be on the center of the guide strip during tensioning; the tension tool can be ensured not to be inclined when knocking and tensioning, and the iron core can not be damaged in the tensioning process; the tensioning tool is of a detachable structure, and after the expansion head is damaged, the small workpiece of the expansion head is replaced, so that the cost loss is reduced; the working efficiency is high.

In order to realize the technical purpose, the utility model discloses the technical scheme who takes does:

a mouse cage type rotor core conducting bar tensioning tool comprises a base, a tensioning tool and a handle;

the bottom of the base is an arc surface, the bottom arc of the base is the same as the arc of the excircle of the rotor core, two bosses are arranged at the bottom of the base, the distance between the two bosses is the same as the total distance of M core slots in the rotor core, M is an odd number greater than 1, an internal hole is formed in the middle of the base, the tensioning tool is located in the internal hole of the base and is elastically connected with the internal hole of the base, the tensioning tool is in small clearance fit with the internal hole of the base, the tensioning tool comprises a knocking body and an expanding head, the knocking body is detachably connected with the expanding head, and the knocking body is located above the expanding head;

the handle is fixedly connected with the base.

As a further improved technical scheme of the utility model, M is 3.

As a further improved technical scheme of the utility model, the width of base and single treat that the adjacent interval that needs between the tight point that rises on the tight conducting bar (can be called for short the conducting bar) that rises is the same.

As a further improved technical scheme of the utility model, the bottom of tight instrument and base that rises sets up perpendicularly.

As a further improved technical scheme of the utility model, the lower part of the knocking body of the tensioning tool is provided with a chute, and the upper part of the expanding head is inserted into the chute of the knocking body; the upper part of the expansion head is the same as the shape of the sliding chute, and the sliding chute is in a dovetail groove shape.

As a further improved technical scheme of the utility model, the inside hole on the base is the square hole.

As a technical scheme of the utility model, the inside hole of base includes thick hole and lower pore, it is formed with the step with lower pore hookup location to go up thick hole, first mounting groove has been seted up on the step, the bottom of the body of beating of the tight instrument that rises is seted up and is located the second mounting groove on the same vertical direction with this first mounting groove, the body of beating of the tight instrument that rises is located thick hole, the lower part of the shape head that rises is located down pore, first mounting groove and second mounting groove elastic connection.

As the utility model discloses further modified technical scheme still includes the spring, spring one end is located first mounting groove, and the other end is located the second mounting groove, first mounting groove passes through spring elastic connection with the second mounting groove.

As the utility model discloses further modified technical scheme still includes the top cap, circular mesopore has been seted up at the middle part of top cap, mesoporous diameter is less than the length of side of the last coarse hole of base, screw fixed connection is passed through at the top of top cap and base, the body of beating of the instrument that rises includes first half structure and latter half structure, first half structure and latter half structure fixed connection structure as an organic whole, first half structure is cylindrical, the latter half structure is the cuboid, the cross section diameter of first half structure is less than the cross section length of side of latter half structure, latter half structure is located in the last coarse hole of base and the little clearance fit of latter half structure and last coarse hole, first half structure upwards wears out the mesopore at top cap middle part.

As the utility model discloses further modified technical scheme, the handle all adopts the metal material with the base, the handle passes through welding mode fixed connection with the base, the body of beating of the instrument that rises and tightly adopts the 40Cr material, the shape head that rises adopts the 1Cr11MoV material.

The utility model has the advantages that:

(1) the utility model discloses two bosss of base design can block at two iron core inslots, and the shape head that rises when guaranteeing that the gib tension rises on the positive center of gib block. The width of the base is consistent with the distance between two adjacent tensioning points which are originally designed by the guide strip and need to be tensioned, the edge of the base is flush with the edge of the last tensioning point when the tool is moved at each time, the distance between the adjacent tensioning points can be ensured, and the working efficiency is high. The arc at the bottom of the base is consistent with the excircle of the rotor core, the tensioning tool is perpendicular to the arc surface at the bottom of the base, and the bottom of the tool base is attached to the excircle of the core during tensioning, so that the tensioning tool can be prevented from being inclined during knocking and tensioning, and the core can be prevented from being damaged during tensioning. The side of the tool is provided with the handle, and an operator only needs to hold the side handle in the knocking process, so that the injury of the operator holding the tool during knocking can be avoided. The tensioning part (namely the tensioning tool) of the knocking tool is designed to be a detachable structure, and after the tensioning tool is damaged, the small workpiece (namely the expansion head) at the tensioning position in the tensioning tool is replaced, so that the cost loss is reduced. The springs are arranged below the knocking body, so that the expansion head can automatically rebound after each expansion, the expansion head is prevented from being clamped in the expanded groove, the expansion tool is translated to a required position after one expansion, the next expansion can be performed, and the working efficiency is greatly improved.

(2) The arc of base bottom is unanimous with the excircle of unshakable in one's determination, and the distance is the same with the total distance in three groove unshakable in one's determination between two bosss of bottom, guarantees that the shape head that rises that is located between two bosss can align with the positive center of conducting strip, and the square inside hole of base is the guide way of the tight instrument that rises, ensures that the tight instrument that rises can not be crooked, and two little round holes (being first mounting groove) on the step are for ensuring the mounting groove of the tight instrument spring that rises resilience, and base top screw hole is the fixed orifices of top cap in the guide way.

(3) The knocking point of the iron hammer of the body to be knocked of the tensioning tool needs good toughness, the material is 40Cr, cracking and damage during knocking are avoided, the outer contour of a cuboid with the enlarged lower side size (namely a lower half structure) is in small clearance fit with a thick upper hole of a base, vertical knocking copper bars are ensured, and two small round holes (namely a second mounting groove) at the bottom of the body to be knocked are spring mounting grooves; the expansion head 2-2 is of a replaceable structure, and the material is 1Cr11MoV with high strength, so that loss is reduced.

(4) The top cover is a positioning device of the tensioning tool, so that the displacement of the tensioning tool is ensured, namely the tensioning tool automatically rebounds under the action of the spring after tensioning, and the top cover blocks the upward rebounding displacement of the tensioning tool. The round middle hole in the middle of the top cover is a hole for the tensioning tool to extend out of the base.

Drawings

Fig. 1 is a cross-sectional view of the overall structure of the embodiment of the present invention.

Fig. 2 is a top view of the overall structure of the embodiment of the present invention.

Fig. 3 is a schematic view of an angle of a handle according to an embodiment of the present invention.

Fig. 4 is a top view of the base according to the embodiment of the present invention.

Fig. 5 is a sectional view taken along line a-a in fig. 4.

Fig. 6 is a front view of the tensioning tool according to the embodiment of the present invention.

Fig. 7 is a left side view of the tensioning tool of the embodiment of the present invention.

Fig. 8 is a top view of the top cover according to the embodiment of the present invention.

Fig. 9 is a side view of a top cover according to an embodiment of the present invention.

Detailed Description

The following further description of embodiments of the present invention is made with reference to the accompanying drawings:

as shown in fig. 1 to 3, a cage rotor core conducting bar tensioning tool comprises a base 1, a tensioning tool 2 and a handle 3.

As shown in fig. 4 and 5, the bottom of the base 1 is an arc surface, the bottom arc of the base 1 is the same as the arc of the outer circle of the rotor core, two bosses 1-1 are arranged at the bottom of the base 1, the distance between the two bosses 1-1 is the same as the total distance of 3 iron core slots on the outer circle of the rotor core, an inner hole is formed in the middle of the base 1, the tensioning tool 2 is located in the inner hole of the base 1, the tensioning tool 2 is elastically connected with the inner hole of the base 1, and the tensioning tool 2 is in small clearance fit with the inner hole of the base 1. As shown in fig. 6 and 7, the tensioning tool 2 comprises a knock-shaped body 2-1 and an expansion head 2-2, the knock-shaped body 2-1 and the expansion head 2-2 are detachably connected, and the knock-shaped body 2-1 is located above the expansion head 2-2.

As shown in fig. 3, the handle 3 is fixedly connected with the base 1.

In this embodiment, each guide strip to be tensioned has a plurality of points to be tensioned, and the width of the base 1 is the same as the distance between adjacent points to be tensioned on a single guide strip to be tensioned.

In this embodiment, the tensioning tool 2 is perpendicular to the bottom of the base 1.

In this embodiment, as shown in fig. 6, the lower portion of the knocking body 2-1 of the tensioning tool 2 is provided with a sliding groove, and the upper portion of the expanding head 2-2 is slidably inserted into the sliding groove of the knocking body 2-1, so that the expanding head 2-2 is conveniently detached; the upper part of the expansion head part 2-2 is the same as the shape of the sliding chute, and the sliding chute is in a dovetail groove shape.

In this embodiment, the inner hole of the base 1 is a square hole.

In this embodiment, as shown in fig. 4 and 5, the inner holes of the base 1 include an upper coarse hole 1-2 and a lower fine hole 1-3, a step 1-4 is formed at a connection position of the upper coarse hole 1-2 and the lower fine hole 1-3, and a first mounting groove 1-5 is formed on the step 1-4. As shown in fig. 6, the bottom of the knocking body 2-1 of the tensioning tool 2 is provided with a second mounting groove 2-1-3 which is positioned in the same vertical direction as the first mounting groove 1-5, the knocking body 2-1 of the tensioning tool 2 is positioned in the upper thick hole 1-2, the lower part of the expanding head 2-2 is positioned in the lower thin hole 1-3, and the first mounting groove 1-5 is elastically connected with the second mounting groove 2-1-3.

In this embodiment, as shown in fig. 1, the device further includes a spring 4, one end of the spring 4 is located in the first mounting groove 1-5, the other end of the spring 4 is located in the second mounting groove 2-1-3, and the first mounting groove 1-5 and the second mounting groove 2-1-3 are elastically connected through the spring 4.

In this embodiment, as shown in fig. 1, 8, and 9, the portable electronic device further includes a top cover 5, a circular middle hole 5-1 is formed in the middle of the top cover 5, the diameter of the middle hole 5-1 is smaller than the side length of an upper coarse hole 1-2 of the base 1, and the top cover 5 is fixedly connected to the top of the base 1 through a screw 6 (a hexagon socket head cap screw). As shown in fig. 6, the knocking body 2-1 of the tensioning tool 2 comprises an upper half structure 2-1-1 and a lower half structure 2-1-2, the upper half structure 2-1-1 and the lower half structure 2-1-2 are fixedly connected into an integral structure, the upper half structure 2-1-1 is cylindrical, the lower half structure 2-1-2 is rectangular, the diameter of the cross section of the upper half structure 2-1-1 is smaller than the length of the cross section of the lower half structure 2-1-2, the lower half structure 2-1-2 is located in the upper coarse hole 1-2 of the base 1, and the lower half structure 2-1-2 is in small clearance fit with the upper coarse hole 1-2, the upper half structure 2-1-1 extends upwards out of the middle hole 5-1 in the middle of the top cover 5.

In this embodiment, the handle 3 and the base 1 are both made of metal, the handle 3 and the base 1 are fixedly connected by welding, the knock-shaped body 2-1 of the tensioning tool 2 is made of 40Cr, and the expansion head 2-2 is made of 1Cr11 MoV.

The tool base 1 is provided with a positioning device (namely two small bosses 1-1) which can be clamped in two iron core grooves to ensure that an expanding head 2-2 expands on the center of a guide bar when the guide bar is expanded. The width of the base 1 is consistent with the distance between two adjacent tensioning points which are originally designed and need to be tensioned, and the base 1 is enabled to be flush with the edge of the last tensioning point when the tensioning tool is moved each time, so that the distance between the adjacent tensioning points can be ensured. The bottom arc of the base 1 is consistent with the excircle of the rotor core, the tensioning tool 2 is perpendicular to the bottom arc surface of the base 1, and the bottom of the tool base 1 is attached to the excircle of the core during tensioning, so that the tensioning tool can be prevented from being inclined during knocking and tensioning, and the core can be prevented from being damaged during tensioning; frock side design handle 3, operating personnel only need hold up side handle 3 at the in-process of strikeing, and the personnel of holding up the frock can be avoided injuring when strikeing. The tensioning part (namely the tensioning tool 2) of the knocking tool is designed to be a detachable structure, and after the tensioning tool 2 is damaged, a small workpiece (namely the expansion head part 2-2) at a tensioning position in the tensioning tool 2 is replaced, so that the cost loss is reduced; the springs 4 are arranged below the knocking bodies 2-1, so that the expansion heads 2-2 can automatically rebound after each expansion, the expansion heads 2-2 are prevented from being clamped in the expanded grooves, the expansion tool is translated to a required position after one expansion, the next expansion can be carried out, and the working efficiency is greatly improved.

The bottom arc of the base 1 is consistent with the excircle of an iron core, the distance between two bosses 1-1 of the bottom 1 is the same as the total distance of three iron core grooves, so that an expanding head 2-2 positioned between the two bosses 1-1 can be aligned with the center of a guide strip to be expanded, a square inner hole of the base 1 is a guide groove of a tensioning tool 2 to ensure that the tensioning tool 2 cannot be skewed, two small round holes (namely, first mounting grooves 1-5) on steps 1-4 in the guide groove are mounting grooves for ensuring a spring 4 for springback of the tensioning tool, and a threaded hole at the top of the base 1 is a fixing hole of a top cover 5;

the knocking point of the iron hammer of the knocking body 2-1 of the tensioning tool 2 needs good toughness, the material is 40Cr, cracking and damage during knocking are avoided, the outer contour of a cuboid with the enlarged size at the lower side (namely the lower half part structure 2-1-2) is in small clearance fit with the upper thick hole 1-2 of the base 1, a vertically knocking copper bar is ensured, and two small round holes (namely the second mounting grooves 2-1-3) at the bottom of the knocking body 2-1 are spring mounting grooves; the expansion head 2-2 is of a replaceable structure, and the material is 1Cr11MoV with high strength, so that loss is reduced.

The top cover 5 is a positioning device of the tensioning tool 2, so as to ensure the displacement of the tensioning tool 2, namely, after the tensioning tool 2 is tensioned, the top cover 5 automatically rebounds under the action of the spring, and the top cover 5 blocks the upward rebounding displacement of the tensioning tool 2. The round middle hole 5-1 in the middle of the top cover 5 is a hole for the tensioning tool 2 to extend out of the base 1. Handle 3 holds up the position that the conducting bar rises and tightly installs for operating personnel, keeps away from the point of knocking, avoids causing personnel's injury.

The protection scope of the present invention includes but is not limited to the above embodiments, the protection scope of the present invention is subject to the claims, and any replacement, deformation, and improvement that can be easily conceived by those skilled in the art made by the present technology all fall into the protection scope of the present invention.

Claims

1. The utility model provides a cage rotor core conducting bar rises and tightly installs which characterized in that: comprises a base (1), a tensioning tool (2) and a handle (3);

the bottom of the base (1) is an arc surface, the bottom arc of the base (1) is the same as the arc of the excircle of the rotor core, the bottom of the base (1) is provided with two bosses (1-1), the distance between the two bosses (1-1) is the same as the total distance of M core slots on the rotor core, M is an odd number larger than 1, the middle of the base (1) is provided with an internal hole, the tensioning tool (2) is positioned in the internal hole of the base (1), the tensioning tool (2) is elastically connected with the internal hole of the base (1), the tensioning tool (2) is in small clearance fit with the internal hole of the base (1), the tensioning tool (2) comprises a knocking body (2-1) and an expanding head (2-2), the knocking body (2-1) and the expanding head (2-2) are detachably connected, the knock-shaped body (2-1) is positioned above the expansion head (2-2);

the handle (3) is fixedly connected with the base (1).

2. The mouse cage rotor core conducting bar tensioning tool according to claim 1, characterized in that: and M is 3.

3. The mouse cage rotor core conducting bar tensioning tool according to claim 1, characterized in that: the width of the base (1) is the same as the distance between adjacent tensioning points on a single guide strip to be tensioned.

4. The mouse cage rotor core conducting bar tensioning tool according to claim 3, characterized in that: the tensioning tool (2) is perpendicular to the bottom of the base (1).

5. The mouse cage rotor core conducting bar tensioning tool according to claim 4, characterized in that: the lower part of the knocking body (2-1) of the tensioning tool (2) is provided with a sliding chute, and the upper part of the expanding head (2-2) is inserted into the sliding chute of the knocking body (2-1); the upper part of the expansion head (2-2) is the same as the shape of the sliding grooves, and the sliding grooves are all in dovetail groove shapes.

6. The mouse cage rotor core conducting bar tensioning tool according to claim 1, characterized in that: the inner hole on the base (1) is a square hole.

7. The mouse cage rotor core conducting bar tensioning tool according to claim 6, characterized in that: the inner holes of the base (1) comprise an upper coarse hole (1-2) and a lower fine hole (1-3), the connecting position of the upper coarse hole (1-2) and the lower fine hole (1-3) is provided with a step (1-4), the steps (1-4) are provided with first mounting grooves (1-5), the bottom of the knocking body (2-1) of the tensioning tool (2) is provided with second mounting grooves (2-1-3) which are positioned in the same vertical direction as the first mounting grooves (1-5), the knocking body (2-1) of the tensioning tool (2) is positioned in the upper coarse hole (1-2), the lower part of the expansion head (2-2) is positioned in the lower fine hole (1-3), and the first mounting groove (1-5) is elastically connected with the second mounting groove (2-1-3).

8. The mouse cage rotor core bar tensioning tool according to claim 7, characterized in that: the spring is characterized by further comprising a spring (4), one end of the spring (4) is located in the first mounting groove (1-5), the other end of the spring (4) is located in the second mounting groove (2-1-3), and the first mounting groove (1-5) is elastically connected with the second mounting groove (2-1-3) through the spring (4).

9. The mouse cage rotor core bar tensioning tool according to claim 8, characterized in that: the tensioning tool is characterized by further comprising a top cover (5), a circular middle hole (5-1) is formed in the middle of the top cover (5), the diameter of the middle hole (5-1) is smaller than the side length of an upper thick hole (1-2) of the base (1), the top cover (5) is fixedly connected with the top of the base (1) through a screw (6), a knocking body (2-1) of the tensioning tool (2) comprises an upper half structure (2-1-1) and a lower half structure (2-1-2), the upper half structure (2-1-1) and the lower half structure (2-1-2) are fixedly connected into a whole, the upper half structure (2-1-1) is cylindrical, the lower half structure (2-1-2) is rectangular, and the diameter of the cross section of the upper half structure (2-1-1) is smaller than the lower half structure The cross section of the structure (2-1-2) is long, the lower half structure (2-1-2) is located in the upper coarse hole (1-2) of the base (1), the lower half structure (2-1-2) is in small clearance fit with the upper coarse hole (1-2), and the upper half structure (2-1-1) penetrates out of the middle hole (5-1) in the middle of the top cover (5) upwards.

10. The mouse cage rotor core conducting bar tensioning tool according to claim 1, characterized in that: the handle (3) and the base (1) are both made of metal materials, the handle (3) and the base (1) are fixedly connected in a welding mode, the knocking body (2-1) of the tensioning tool (2) is made of 40Cr materials, and the expanding head (2-2) is made of 1Cr11MoV materials.