CN102493962A - Convenient disassembly type motor extension shaft for pump - Google Patents
Convenient disassembly type motor extension shaft for pump Download PDFInfo
- Publication number
- CN102493962A CN102493962A CN2011104426527A CN201110442652A CN102493962A CN 102493962 A CN102493962 A CN 102493962A CN 2011104426527 A CN2011104426527 A CN 2011104426527A CN 201110442652 A CN201110442652 A CN 201110442652A CN 102493962 A CN102493962 A CN 102493962A
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- water pump
- shaft
- axle sleeve
- pump spindle
- motor
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Abstract
The invention relates to a convenient disassembly type motor extension shaft for a pump. The convenient disassembly type motor extension shaft for the pump is characterized in that: a water pump shaft rigid shaft sleeve is directly formed at the tail end of a water pump shaft; the water pump shaft rigid shaft sleeve is provided with a section of shaft sleeve outer conical surface which is tapered from up to down; the water pump shaft rigid shaft sleeve is provided with two to six edge-opening grooves which are communicated with the positions below the shaft sleeve outer conical surface; the inner shaft sleeve surfaces at the upper positions of the edge-opening grooves of the water pump shaft rigid shaft sleeve are in interference fit with a motor shaft; and a conical fastening sleeve is firmly arranged on the shaft sleeve outer conical surface of the water pump shaft with the rigid shaft sleeve by a fastening nut through a shaft sleeve outer thread on the rigid shaft sleeve of the water pump shaft. The invention aims to provide a convenient disassembly type motor extension shaft for a pump, wherein an independent bearing body is not required to be adopted to support the pump shaft, so that the precision of the form and position tolerance of the extension shaft can be ensured, the extension shaft is firmly connected, the pump operates more stably and reliably, and the water pump shaft is detached from the motor shaft once the water pump shaft is damaged.
Description
Technical field
The present invention relates to a kind of detachable type motor extension shaft, relate in particular to a kind of detachable type electric motor for pump extension shaft.
Background technique
Common centrifugal pipeline mounted pump or horizontal monoblock pump; The characteristics relatively shorter according to water pump shaft extension bracketed part, pump and motor adopt the close coupled type structure, utilize the pump shaft of the elongated shaft expansion of motor as single stage centrifugal pump; The coupling arrangement that has replaced traditional pump shaft, pump bearing and coupling; Make motor simpler, reduced the cost of making and installing, and the operation of pump also more steadily, reliably with connecting of centrifugal pump.But the maximum shortcoming of the type pump is: 1, the pump motor shaft extension must special ordering be made, unified industry standard useless, and supporting difficulty, versatility and interchangeability are poor; 2, water pump shaft extension working portion is in case damage, because pump adopts the close coupled type structure with motor, and motor shaft and motor rotor part are connected as a single entity, so ten minutes is difficult when maintenance or replacing water pump shaft extension working portion, and the also corresponding costliness of price; 3, be used to carry special media when water pump, when requiring to adopt anti-explosion motor, or when requiring water pump shaft extension working portion to possess the corrosion protection requirement, motor is ordered and is made the comparison difficulty, the also corresponding costliness of price.
ISGB type detachable type Piping Centrifugal Pumps adopts the standard universal motor, drives pump shaft by motor through rigid coupling; Avoided the extension shaft electric drilling match difficult; Change difficult problem, improved the versatility and the interchangeability of motor and accessory thereof, make the product maintenance convenient.But because rigid coupling has increased shaft extension bracketed part length, product need adopt the separate bearings body to support pump shaft, therefore; Volume, weight and the manufacture cost of water pump have not only been increased; And, when pump connects precision when not high with motor, owing to adopt rigid coupling; Might cause disalignment to disturb between water pump bearing and the motor bearings, influence water pump and motor bearings working life and quality.
Having product directly to produce the rigidity axle sleeve at the water pump spindle afterbody connects with motor shaft; Owing to can compress shaft extension bracketed part length; Need not adopt the separate bearings body to support pump shaft; Compared through rigid coupling driving pump shaft mode by motor with common, can reduce volume, weight and the manufacture cost of water pump, its existing product connecting mode mainly can be divided into has two types:
1, water pump spindle rigidity axle sleeve and motor shaft adopt interference fit joint.This kind mode connects firmly, can guarantee the form and position tolerance precision of extension shaft, and is also very reliable during use.But,, need repairing or when changing, water pump spindle is separated but very difficulty with motor shaft in case damage when water pump spindle or motor fore bearing, need to adopt destructive dismounting mode usually.
2, water pump spindle rigidity axle sleeve and motor shaft adopt non-interference fit, and other machinery type is assisted fastening connection.This kind mode is keeped in repair when water pump spindle or the damage of motor fore bearing or is changed more convenient; But can not guarantee the form and position tolerance precision of extension shaft; Friction and the pulsation in the rigidity axle sleeve of water pump spindle and motor shaft might appear during use; Reduce the working life and the sealing effect of mechanical water pump sealing, increase the rate of corrosion on water pump spindle rigidity axle sleeve and motor shaft surface, and the service property (quality) and the life-span of reducing water pump thus.
Summary of the invention
The objective of the invention is to provide a kind of directly produces the rigidity axle sleeve at the water pump spindle afterbody and connects with motor shaft; Can at utmost compress shaft extension bracketed part length; Need not adopt the separate bearings body to support pump shaft, water pump spindle rigidity axle sleeve and motor shaft adopt interference fit joint, can either guarantee the form and position tolerance precision of extension shaft; Connect fastening; Make the operation of pump steady more, reliable, convenient again when in a single day water pump spindle damages, water pump spindle is dismantled the detachable type electric motor for pump extension shaft that separates from motor shaft.
This detachable type electric motor for pump extension shaft of the present invention is made up of water pump spindle, tapered adapter sleeve, stop pad, tightening nut and the coupling of band rigidity axle sleeve, and it is characterized in that: described water pump spindle afterbody directly produces water pump spindle rigidity axle sleeve; Described water pump spindle stiff shaft puts one section up big and down small axle sleeve outer cone profile; Below the described axle sleeve outer cone profile one section axle sleeve outside thread is arranged; Described water pump spindle stiff shaft has put 2～6 and has opened the limit groove and pass to axle sleeve outer cone profile lower position; Internal axle sleeve face and motor shaft that described water pump spindle rigidity axle sleeve is opened limit groove upper position adopt interference fit to be of a size of interference internal axle sleeve face, and all the other internal axle sleeve faces and motor shaft adopt non-interference fit to be of a size of non-interference internal axle sleeve face; The axle sleeve outside thread that the stiff shaft of described tightening nut through the water pump spindle of band rigidity axle sleeve puts is on the axle sleeve outer cone profile with the fastening water pump spindle that is installed in band rigidity axle sleeve of described tapered adapter sleeve.
Wherein, on the described water pump spindle rigidity axle sleeve internal axle sleeve face flat key groove that matches with motor shaft is arranged, flat key groove lower position water pump spindle stiff shaft puts the flat key groove through hole of a diameter greater than the flat key well width.
Wherein, described water pump spindle rigidity axle sleeve is opened limit groove lower position water pump spindle stiff shaft and is put a diameter and open limit groove through hole greater than what open the limit well width.
Working principle of the present invention is: water pump spindle rigidity axle sleeve and motor shaft adopt interference fit joint, can either guarantee the form and position tolerance precision of extension shaft, can guarantee that again water pump spindle is fastening with connecting of motor shaft, make the operation of pump steady more, reliable; When in a single day water pump spindle damages; Only need unclamp tightening nut and tapered adapter sleeve; Owing to put at the water pump spindle stiff shaft and to have opened 2～6 in advance and open the limit groove and pass to axle sleeve outer cone profile lower position; After prestressing force is eliminated, just can very easily water pump spindle be separated from the motor shaft dismounting.
The bearing capacity that cylindrical interference connects depends primarily on the frictional force of connection magnitude of interference generation and the intensity of each part; This product can be designed as pure Desing of Interference Joint mode fully; The frictional force or the friction torque that only rely on magnitude of interference to produce; Just the torque that produces in the time of can transmitting pump working is also born the axial force (see figure 1), but this kind mode need increase magnitude of interference, interference area of contact and inclusion body external diameter, and the edge cover and the relatively difficulty that breaks; Be mainly transmitting torque when working according to water pump spindle; Axial force is by characteristics in a basic balance; This product also can be designed as the mode (see figure 2) that Desing of Interference Joint adds the flat key transmission, relies on the flat key transmitting torque, and frictional force or friction torque that magnitude of interference produces are only born axial force; This kind mode can reduce magnitude of interference, interference area of contact and inclusion body external diameter, and the edge cover can be convenient with partition.
Product of the present invention is compared effect and mainly is presented as following with prior art products:
1, adopt the close coupled type structure to compare with pump and motor; Product of the present invention can adopt the standard universal motor; Avoided the extension shaft electric drilling match difficult; Change difficult problem, improved the versatility and the interchangeability of motor and accessory thereof, make the maintenance of products maintenance, particularly the maintenance of pump shaft is convenient.
2, with comparing through rigid coupling driven pump axle construction by motor; Product of the present invention can compress shaft extension bracketed part length; Need not adopt the separate bearings body to support pump shaft; Not only can reduce volume, weight and the manufacture cost of water pump, and the disalignment that can avoid might producing between water pump bearing and the motor bearings is disturbed.
3, adopt the interference fit joint structure to compare with water pump spindle rigidity axle sleeve and motor shaft; When in a single day water pump spindle or motor fore bearing damage; Existing mode will or be opened the limit with the cover turning of water pump spindle stiff shaft and could water pump spindle be separated from the motor shaft dismounting; Whole process is difficulty very, not only will destroy water pump spindle, even might destroy motor shaft; Product of the present invention is owing to put at the water pump spindle stiff shaft and to have opened 2～6 in advance and open the limit groove and pass to axle sleeve outer cone profile lower position; Therefore; Only need unclamp tightening nut and tapered adapter sleeve, after prestressing force is eliminated, just can very easily water pump spindle be separated from the motor shaft dismounting.
4, adopt non-interference fit with water pump spindle rigidity axle sleeve and motor shaft; The auxiliary fastening connecting structure of other machinery type is compared; Product of the present invention can guarantee the form and position tolerance precision of extension shaft fully, guarantees that water pump spindle is fastening with connecting of motor shaft, connects for no gap between water pump spindle rigidity axle sleeve and the motor shaft during use; Friction and the pulsation in the rigidity axle sleeve of water pump spindle and motor shaft can not occur, make the operation of pump steady more, reliable.
5, in product of the present invention; Tapered adapter sleeve is fastening to be installed on the axle sleeve outer cone profile of water pump spindle rigidity axle sleeve, itself need not rely on additional fastening force to cause the distortion of water pump spindle rigidity axle sleeve, its purpose; Be when being used to prevent water pump spindle rigidity axle sleeve and motor shaft interference assembling; Because the existence of opening the limit groove causes the distortion of water pump spindle rigidity axle sleeve to be opened, be water pump spindle and the later dismounting of motor shaft assembling for ease; This point and common transmission joint part bulging joining sleeve all have very big difference on structural type and design concept.
Description of drawings
Fig. 1 is pure Desing of Interference Joint mode embodiment's 1 an of the present invention structural representation.
Fig. 2 is the structural representation that Desing of Interference Joint of the present invention adds the mode embodiment 2 of flat key transmission.
Symbol description among the figure: 1 water pump spindle, 2 tapered adapter sleeves, 3 stop pads, 4 tightening nuts, 5 water pump spindle rigidity axle sleeves, 6 axle sleeve outer cone profiles, 7 axle sleeve outside threads, 8 are opened limit groove, 9 interference internal axle sleeve faces, 10 non-interference internal axle sleeve faces, 11 flat key grooves, 12 and are opened limit groove through hole, 13 flat key groove through holes.
Embodiment
1 couple of pure Desing of Interference Joint mode embodiment 1 of the present invention describes below in conjunction with accompanying drawing:
In present embodiment 1; This detachable type electric motor for pump extension shaft of the present invention is by the water pump spindle 1 of band rigidity axle sleeve, tapered adapter sleeve 2, stop pad 3; Tightening nut 4 is formed with coupling, and it is characterized in that: described water pump spindle 1 afterbody directly produces water pump spindle rigidity axle sleeve 5; One section up big and down small axle sleeve outer cone profile 6 is arranged on the described water pump spindle rigidity axle sleeve 5; Below the described axle sleeve outer cone profile 6 one section axle sleeve outside thread 7 is arranged; There are 2～6 to open limit groove 8 and pass to axle sleeve outer cone profile 6 lower positions on the described water pump spindle rigidity axle sleeve 5; Internal axle sleeve face and motor shaft that described water pump spindle rigidity axle sleeve is opened limit groove 8 upper positions adopt interference fit to be of a size of interference internal axle sleeve face 9, and all the other internal axle sleeve faces and motor shaft adopt non-interference fit to be of a size of non-interference internal axle sleeve face 10; The axle sleeve outside thread 7 that the stiff shaft of described tightening nut 4 through the water pump spindle 1 of band rigidity axle sleeve puts is on the axle sleeve outer cone profile 6 with the fastening water pump spindle 1 that is installed in band rigidity axle sleeve of described tapered adapter sleeve 6; Described stop pad 3 is used to prevent that tightening nut 4 is loosening when rotated.Wherein, described water pump spindle rigidity axle sleeve is opened has a diameter to open limit groove through hole 12 greater than what open limit groove 8 width on the limit groove 8 lower position water pump spindle rigidity axle sleeves 5.
The mode embodiment 2 who adds the flat key transmission below in conjunction with 2 pairs of Desing of Interference Joint of the present invention of accompanying drawing describes:
In present embodiment 1; This detachable type electric motor for pump extension shaft of the present invention is by the water pump spindle 1 of band rigidity axle sleeve, tapered adapter sleeve 2, stop pad 3; Tightening nut 4 is formed with coupling, and it is characterized in that: described water pump spindle 1 afterbody directly produces water pump spindle rigidity axle sleeve 5; One section up big and down small axle sleeve outer cone profile 6 is arranged on the described water pump spindle rigidity axle sleeve 5; Below the described axle sleeve outer cone profile 6 one section axle sleeve outside thread 7 is arranged; There are 2～6 to open limit groove 8 and pass to axle sleeve outer cone profile 6 lower positions on the described water pump spindle rigidity axle sleeve 5; Internal axle sleeve face and motor shaft that described water pump spindle rigidity axle sleeve is opened limit groove 8 upper positions adopt interference fit to be of a size of interference internal axle sleeve face 9, and all the other internal axle sleeve faces and motor shaft adopt non-interference fit to be of a size of non-interference internal axle sleeve face 10; The axle sleeve outside thread 7 that the stiff shaft of described tightening nut 4 through the water pump spindle 1 of band rigidity axle sleeve puts is on the axle sleeve outer cone profile 6 with the fastening water pump spindle 1 that is installed in band rigidity axle sleeve of described tapered adapter sleeve 6; Described stop pad 3 is used to prevent that tightening nut 4 is loosening when rotated.Wherein, on the described water pump spindle rigidity axle sleeve 5 internal axle sleeve faces flat key groove 11 that matches with motor shaft is arranged, on the flat key groove lower position water pump spindle rigidity axle sleeve 5 the flat key groove through hole 13 of a diameter greater than flat key groove 11 width arranged.Wherein, described water pump spindle rigidity axle sleeve is opened has a diameter to open limit groove through hole 12 greater than what open limit groove 8 width on the limit groove 8 lower position water pump spindle rigidity axle sleeves 5.
The specific embodiment of the invention 1 with embodiment 2 the main distinction is:
1, embodiment 1 adopts pure Desing of Interference Joint mode, and the torque that produces when only relying on frictional force that magnitude of interference produces or friction torque to transmit pump working is also born axial force; Embodiment 2 adopts Desing of Interference Joint to add the mode of flat key transmission, relies on the flat key transmitting torque, and the frictional force or the friction torque that rely on magnitude of interference to produce are born axial force.
2, embodiment 1 needs to increase interference internal axle sleeve face magnitude of interference, interference area of contact and inclusion body water pump spindle rigidity axle sleeve external diameter, and must adopt the temperature differential method assembling, relatively also can compare difficulty during partition; Embodiment 2 can reduce interference internal axle sleeve face magnitude of interference, interference area of contact and inclusion body water pump spindle stiff shaft external diameter, can adopt the assembling of temperature differential method or plunging, relatively also can be convenient during partition.
Claims (3)
1. a detachable type electric motor for pump extension shaft is made up of water pump spindle, tapered adapter sleeve, stop pad, tightening nut and the coupling of band rigidity axle sleeve, and it is characterized in that: described water pump spindle afterbody directly produces water pump spindle rigidity axle sleeve; Described water pump spindle stiff shaft puts one section up big and down small axle sleeve outer cone profile; Below the described axle sleeve outer cone profile one section axle sleeve outside thread is arranged; Described water pump spindle stiff shaft has put 2～6 and has opened the limit groove and pass to axle sleeve outer cone profile lower position; Internal axle sleeve face and motor shaft that described water pump spindle rigidity axle sleeve is opened limit groove upper position adopt interference fit to be of a size of interference internal axle sleeve face, and all the other internal axle sleeve faces and motor shaft adopt non-interference fit to be of a size of non-interference internal axle sleeve face; The axle sleeve outside thread that the stiff shaft of described tightening nut through the water pump spindle of band rigidity axle sleeve puts is on the axle sleeve outer cone profile with the fastening water pump spindle that is installed in band rigidity axle sleeve of described tapered adapter sleeve.
2. by the described a kind of detachable type electric motor for pump extension shaft of claim 1; It is characterized in that: on the described water pump spindle rigidity axle sleeve internal axle sleeve face flat key groove that matches with motor shaft is arranged, flat key groove lower position water pump spindle stiff shaft puts the flat key groove through hole of a diameter greater than the flat key well width.
3. by the described a kind of detachable type electric motor for pump extension shaft of claim 1, it is characterized in that: described water pump spindle rigidity axle sleeve is opened limit groove lower position water pump spindle stiff shaft and is put a diameter and open limit groove through hole greater than what open the limit well width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104426527A CN102493962A (en) | 2011-12-26 | 2011-12-26 | Convenient disassembly type motor extension shaft for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104426527A CN102493962A (en) | 2011-12-26 | 2011-12-26 | Convenient disassembly type motor extension shaft for pump |
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| Publication Number | Publication Date |
|---|---|
| CN102493962A true CN102493962A (en) | 2012-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104426527A Pending CN102493962A (en) | 2011-12-26 | 2011-12-26 | Convenient disassembly type motor extension shaft for pump |
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| CN (1) | CN102493962A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715315A (en) * | 2014-12-19 | 2016-06-29 | 松下知识产权经营株式会社 | Urbo Machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2477876Y (en) * | 2001-05-08 | 2002-02-20 | 张占峰 | Single support hanging rack one-stage centrifugal pump |
| CN201106577Y (en) * | 2007-09-30 | 2008-08-27 | 深圳市龙岗区龙岗爱联宇宙机器设备厂 | Connecting structure of charging pump and motor of PCB equipment |
| CN201720950U (en) * | 2010-08-13 | 2011-01-26 | 杨贵庭 | Automatic limiting mechanism on crystal processing device |
| CN201723602U (en) * | 2010-06-24 | 2011-01-26 | 广州市白云泵业集团有限公司 | Draw bail of socked shaft |
-
2011
- 2011-12-26 CN CN2011104426527A patent/CN102493962A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2477876Y (en) * | 2001-05-08 | 2002-02-20 | 张占峰 | Single support hanging rack one-stage centrifugal pump |
| CN201106577Y (en) * | 2007-09-30 | 2008-08-27 | 深圳市龙岗区龙岗爱联宇宙机器设备厂 | Connecting structure of charging pump and motor of PCB equipment |
| CN201723602U (en) * | 2010-06-24 | 2011-01-26 | 广州市白云泵业集团有限公司 | Draw bail of socked shaft |
| CN201720950U (en) * | 2010-08-13 | 2011-01-26 | 杨贵庭 | Automatic limiting mechanism on crystal processing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715315A (en) * | 2014-12-19 | 2016-06-29 | 松下知识产权经营株式会社 | Urbo Machine |
| CN105715315B (en) * | 2014-12-19 | 2019-08-27 | 松下知识产权经营株式会社 | Turbine |
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Application publication date: 20120613 |