CN114131543A

CN114131543A - Positioning device for rotor disassembly and assembly and rotor disassembly and assembly method

Info

Publication number: CN114131543A
Application number: CN202111499966.0A
Authority: CN
Inventors: 袁帅; 李赏
Original assignee: Kyky Technology Co ltd
Current assignee: Kyky Technology Co ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-03-04

Abstract

The application provides a positioning device for disassembling and assembling a rotor and a rotor disassembling and assembling method, wherein the positioning device comprises a rotor holding tool, and the rotor holding tool comprises a holding part and a positioning part; the clamping component is arranged to be capable of clamping a rotor of the pump to be disassembled and assembled, and the positioning component is arranged to be capable of clamping the clamping component on the rotor and then positioning the clamping component on a preset structure to prevent the clamping component from rotating. The technical scheme that this application provided can fix a position the rotor when the rotor of dismouting pump, does benefit to and saves the human cost and improves dismouting efficiency.

Description

Positioning device for rotor disassembly and assembly and rotor disassembly and assembly method

Technical Field

The application relates to the technical field of pump disassembly and assembly, in particular to a positioning device for rotor disassembly and assembly and a rotor disassembly and assembly method.

Background

In the prior art, some types of pumps are provided with rotors for compressing and discharging gas, for example, molecular pumps, which have rotors mounted in chambers, and the rotors rotating at high speed compress the gas molecules in the chambers and discharge them from the gas discharge ports at a directional speed when in operation.

The rotor of molecular pump passes through the fastener to be fixed on the main shaft, because the main shaft rotates easily, is comparatively difficult when installing the rotor in the main shaft or dismantling the rotor from the main shaft, needs two people cooperation at least to realize to dismantle as the example: one person needs to wear a clean glove to lock the rotor, the other person can use a socket wrench or an inner hexagon wrench to disassemble a fastener for fixing the rotor and the molecular pump main shaft together, and then the rotor can be taken down,

for saving labor cost and improving the disassembly and assembly efficiency of the molecular pump, a technical scheme capable of conveniently disassembling and assembling the rotor of the pump is needed.

Disclosure of Invention

In view of this, the present application provides a positioning device and a method for disassembling and assembling a rotor, so as to solve the problem of difficulty in disassembling and assembling the rotor of the pump in the prior art.

In order to achieve the above object, the present application provides a positioning device for disassembling and assembling a rotor, where the positioning device includes a rotor clasping tool, and the rotor clasping tool includes a clasping component and a positioning component;

the clamping component is arranged to be capable of clamping a rotor of the pump to be disassembled and assembled, and the positioning component is arranged to be capable of clamping the clamping component on the rotor and then positioning the clamping component on a preset structure to prevent the clamping component from rotating.

Optionally, the clasping component comprises a first clasping arm, a second clasping arm and a locking piece, and the first clasping arm and the second clasping arm can relatively rotate to an open state and a closed state; in the open state, the rotor can be accommodated between the first and second clasping arms, and in the closed state, the first and second clasping arms clasping the rotor, and the locking member is configured to lock the first and second clasping arms in the closed state;

the positioning means is arranged for positioning the first and second clasping arms in the closed state on the predetermined structure.

Optionally, the clasping component further comprises a connecting plate, the first clasping arm is hinged to the connecting plate through a first rotating shaft, and the second clasping arm is hinged to the connecting plate through a second rotating shaft.

Optionally, the positioning component is a positioning pin, at least one of the first clasping arm and the second clasping arm is provided with a positioning hole, and when the first clasping arm and the second clasping arm clasp the rotor, the positioning pin passes through the positioning hole along the axial direction of the rotor and is positioned on the opening hole formed in the predetermined structure.

Optionally, the first clasping arm and the second clasping arm each include a clasping body for clasping the rotor and a positioning arm extending outward from the clasping body, and the positioning hole is formed in the positioning arm;

it is provided with two at least to hold tightly along the circumference interval on the part location arm, one of them the location arm includes the first linking arm that has first half hole that sets up on the first arm of holding tightly with the second linking arm that has second half hole that sets up on the second arm of holding tightly first hold tightly the arm with the second holds tightly the arm and is in during the closed condition, first linking arm with the amalgamation forms one on the second linking arm the location arm, just first half hole with half hole amalgamation of second forms one the locating hole.

Optionally, the inner sides of the first and second clasping arms are respectively provided with a flexible member for contacting with the rotor.

Optionally, the positioning device further comprises a pump leg locking tool, the pump leg locking tool comprises a supporting table for supporting the pump to be disassembled and assembled and at least two locking mechanisms connected to the supporting table, and each locking mechanism is used for locking one pump leg of the pump to be disassembled and assembled;

each locking mechanism comprises a first clamping part, a second clamping part and a locking component, the second clamping part can rotate relative to the first clamping part to an open state and a locking state, the pump leg can enter the space between the first clamping part and the second clamping part, the locking state enables the first clamping part and the second clamping part to clamp the pump leg, and the locking component locks the first clamping part and the second clamping part to the locking state.

Optionally, a sliding groove is formed in the support table, an installation part with an installation hole is formed in the first clamping part, and the pump leg locking tool further comprises a bolt which penetrates through the installation part and the sliding groove to connect the installation part to the support table;

wherein the bolt is movable along the chute, and the mounting portion is rotatable about the bolt relative to the support table.

Optionally, the locking member comprises a first locking member and a second locking member;

the first locking piece comprises a first threaded rod and a first locking nut in threaded fit with the first threaded rod, the first threaded rod is rotatably connected to the first end of the first clamping part and movably penetrates through the first end of the second clamping part, and the first locking nut can lock the first end of the second clamping part to the first end of the first clamping part through rotation on the side, facing away from the first clamping part, of the second clamping part;

the second locking piece is arranged to lock the second end of the second clamping portion and the second end of the first clamping portion together when the second clamping portion rotates relative to the first clamping portion to the locking state.

According to another aspect of the present application, there is also provided a rotor mounting and dismounting method, including:

adopting a holding component to hold a rotor of the pump to be disassembled;

positioning the clasping member on a predetermined structure.

The rotor disassembling and assembling method further comprises the following steps: and respectively locking one pump leg of the pump to be disassembled by adopting at least two locking mechanisms fixed on the supporting table, wherein the pump to be disassembled is positioned on the supporting table.

The technical scheme that this application provided can realize treating the location of the rotor of dismouting pump when the dismouting rotor to the cost of using manpower sparingly can be operated to the dismouting of rotor to the convenience, and improve dismouting efficiency.

Additional features and advantages of the present application will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of a rotor clasping tool according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a pump leg locking tool in an open state according to an embodiment of the application.

Fig. 3 is a partially enlarged schematic view of fig. 2.

Fig. 4 is a schematic view of the pump leg locking tool shown in fig. 2 in a locked state.

Fig. 5 is a partially cut-away schematic view of fig. 4.

FIG. 6 is a schematic view of a positioning device for positioning a molecular pump according to one embodiment of the present application.

Fig. 7 is a schematic view of fig. 6 from another angle.

Description of the reference numerals

1, a rotor holding tool; 11-a first hugging arm; 111-clasping the main body; 112-a positioning arm; 1121 — a first connecting arm; 1122-second connecting arm; 113-a positioning hole; 1131 — first half-well; 1132 — second half-hole; 12-a second hugging arm; 13-a connecting plate; 14-a first shaft; 15-a second rotating shaft; 16-a flexible member; 17-a lock; 171-bolt shank; 172-lock nut; 18-a locating pin; 2, tightly holding the pump leg; 21-supporting table; 211-a chute; 22-a clamping mechanism; 221-a first clamping portion; 222-a second clamping portion; 223-a first threaded rod; 224-a first locking nut; 225-a second threaded rod; 226-a second locking nut; 227-connecting bolt; 228-a mounting portion; 3-a rotor; 4-pump body base; 5-a main shaft; 6-fastening piece.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. In the present application, the embodiments and the features of the embodiments may be combined with each other without conflict.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application. The term "inside" and "outside" refer to the inside and the outside of the contour of each member itself.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Aiming at the problem that the rotor of the existing pump is difficult to disassemble and assemble, the application provides a positioning device for disassembling and assembling the rotor, wherein the positioning device comprises a rotor holding tool 1, and the rotor holding tool 1 comprises a holding part and a positioning part;

the clamping component is arranged to be capable of clamping a rotor of the pump to be disassembled and assembled, and the positioning component is arranged to be positioned on a preset structure to prevent the clamping component from rotating after the clamping component is clamped on the rotor.

Taking the pump to be disassembled and assembled as a molecular pump as an example, in order to avoid damaging the blades or the traction disc on the rotor when the rotor is held tightly, the holding part is held tightly on the barrel part of the rotor, for example, the holding part can be held tightly between the blades of the rotor, or between the blades of the rotor and the traction disc, or between the traction disc and the traction disc, as long as the holding part does not touch the blades and the traction disc of the rotor.

When the rotor is disassembled or assembled, the positioning device can be easily positioned, so that the rotor is convenient to disassemble and assemble, and the positioning device is particularly suitable for positioning the rotor of the molecular pump. Specifically, when the rotor is dismounted, the rotor is prevented from rotating by firstly clasping the rotor by the clasping member and then positioning the clasping member on a predetermined structure by the positioning member, so that when the bolt for fastening the rotor to the main shaft (the bolt 6 for fastening the rotor 3 to the main shaft 5 as shown in fig. 5) is loosened by a wrench or other tool, the rotor is prevented from following rotation during the rotation of the bolt. Similarly, when the rotor 3 is assembled to the main shaft 5, the rotor 3 is placed at a predetermined position of the main shaft 5, the rotor is positioned by using a rotor holding tool, and then the rotor 3 may be fastened to the main shaft 5 by using bolts.

After the positioning device provided by the application is used for positioning the rotor, only one person is needed to complete the disassembly and assembly of the rotor, the labor cost is effectively saved, and the disassembly and assembly efficiency is greatly improved.

In one embodiment of the present application, as shown in fig. 1, the clasping means includes a first clasping arm 11, a second clasping arm 12 and a locking piece 17, and the first clasping arm 11 and the second clasping arm 12 can be relatively rotated to an open state and a closed state; in the open state, the rotor can be accommodated between the first and second hugging

arms

11, 12, and in the closed state, the first and second hugging

arms

11, 12 hug the rotor, and the locking piece 17 is configured to lock the first and second hugging

arms

11, 12 in the closed state;

the positioning means is provided for positioning the first and second clasping

arms

11, 12 in the closed state on the predetermined structure.

The predetermined structure is preferably a pump body base of the pump to be disassembled and assembled, that is, the rotor is circumferentially fixed relative to the pump body base to prevent the rotor from rotating, and the predetermined structure may also be a fixed structure around the pump to be disassembled and assembled, for example, a supporting table for bearing the pump, and the rotor can also be prevented from rotating by positioning the holding component on the supporting table.

Further, the enclasping component further comprises a connecting plate 13, the first enclasping arm 11 is hinged to the connecting plate 13 through a first rotating shaft 14, and the second enclasping arm 12 is hinged to the connecting plate 13 through a second rotating shaft 15.

It can be understood that, a mode of directly hinging the first enclasping arm 11 and the second enclasping arm 12 together may also be adopted, and a mode of hinging the first enclasping arm 11 and the second enclasping arm 12 to the connecting plate 13 respectively is adopted in this embodiment, so that the relative rotation of the first enclasping arm 11 and the second enclasping arm 12 is more flexible, and the relative rotation range of the first enclasping arm 11 and the second enclasping arm 12 is larger, so that the use is more convenient.

In this embodiment, the locking member 17 includes a bolt bar 171 rotatably connected to one of the first clasping arm 11 and the second clasping arm 12 and a lock nut 172 screwed to the bolt bar 171, the other of the first clasping arm 11 and the second clasping arm 12 is provided with an accommodating groove 173, when the first clasping arm 11 and the second clasping arm 12 are in the closed state, the bolt bar 11 can be rotated into the accommodating groove 173, and the lock nut 172 is located at one end of the accommodating groove 173, so that the first clasping arm 11 and the second clasping arm 12 can be locked together by rotating the lock nut 172.

In order to lock the first enclasping arm 11 and the second enclasping arm 12 together, the locking member 17 may also be a bolt that can pass through bolt holes correspondingly formed in the first enclasping arm 11 and the second enclasping arm 12, or may also be a clamping member, etc., and is not limited herein.

In the present embodiment, as shown in fig. 1, the positioning member is a positioning pin 18, at least one of the first clasping arm 11 and the second clasping arm 12 is provided with a positioning hole 113, and when the first clasping arm 11 and the second clasping arm 12 clasp the rotor, the positioning pin 18 passes through the positioning hole 113 in the axial direction of the rotor and is positioned on the opening provided in the predetermined structure.

More specifically, each of the first clasping arm 11 and the second clasping arm 12 includes a clasping body 111 for clasping the rotor and a positioning arm 112 extending outward from the clasping body 111, and the positioning hole 113 is provided in the positioning arm 112. The clasping body 111 is preferably a circular arc structure which is matched with the outer surface of the cylinder of the rotor.

In order to better position the rotor, at least two positioning arms 112 are arranged on the clasping component at intervals along the circumferential direction of the rotor when the clasping component clasps the rotor, three positioning arms 112 are arranged at intervals along the circumferential direction in fig. 1, one of the positioning arms 112 includes a first connecting arm 1121 with a first half-hole 1131 arranged on the first clasping arm 11 and a second connecting arm 1122 with a second half-hole 1132 arranged on the second clasping arm 12, when the first clasping arm 11 and the second clasping arm 12 are in the closed state, the first connecting arm and the second connecting arm are spliced to form one positioning arm 112, and the first half-hole 1131 and the second half-hole 1132 are spliced to form one positioning hole 113.

In the present embodiment, the first connecting arm 1121 provided in the first clasping arm 11 and the second connecting arm 1122 provided in the second clasping arm 12 can be used as one positioning arm 112, and when clasping the rotor, the first connecting arm 1121 and the second connecting arm 1122 can be held by hand, thereby facilitating the operation of clasping the rotor.

Furthermore, in order to prevent the pressure exerted on the rotor by the first and second clasping

arms

11 and 12 from damaging the rotor, a flexible member 16 for contacting the rotor may be provided on the inner side of the first and second clasping

arms

11 and 12, respectively.

It will be appreciated that the holding member for holding the rotor is not limited to the above-described structure, and other structures capable of holding the rotor may be used. For example, two clamping members may be provided to abut the rotor from opposite sides of the rotor, respectively, and then opposite ends of the two clamping members may be correspondingly connected together, respectively, or clasping of the rotor may be achieved, and then positioning the two clamping members on a predetermined structure.

For further fixing a position the rotor, especially will hold the condition of part location on the pump body base of pump tightly, at the in-process of dismouting rotor, the pump body base of pump also probably receives the force and moves, for avoiding the pump body atress to produce the motion, in an embodiment, positioner still includes pump leg locking frock 2, pump leg locking frock 2 is including being used for supporting a supporting bench 21 and the connection of treating the dismouting pump be in two at least locking mechanical system 22 on supporting bench 21, every locking mechanical system 22 is used for locking a pump leg of treating the dismouting pump.

In one embodiment, as shown in fig. 2-4, each of the locking mechanisms 22 includes a first clamping portion 221, a second clamping portion 222, and a locking member, wherein the second clamping portion 222 is rotatable relative to the first clamping portion 221 to an open state in which the pump leg can enter between the first clamping portion 221 and the second clamping portion 222, and a locked state in which the first clamping portion 221 and the second clamping portion 222 clamp the pump leg, and the locking member locks the first clamping portion 221 and the second clamping portion 222 in the locked state.

In order to enable the pump leg locking tool 2 to lock pump legs of pumps with different specifications, each locking mechanism 22 is arranged to be movable on the support table 21.

Specifically, as shown in fig. 3 and 5, a sliding groove 211 is provided on the support table 21, an installation portion 228 having an installation hole is provided on the first clamping portion 221, and the pump leg locking tool 2 further includes a connection bolt 227 passing through the installation portion 228 and the sliding groove 211 to connect the installation portion 228 to the support table 21;

the connecting bolt 227 can move along the slide groove 211, and the mounting portion 228 can rotate relative to the support table 211 around the connecting bolt 227.

In this embodiment, the first clamping portion 221 is movable and rotatable, so that the first clamping portion 221 and the second clamping portion 222 can be flexibly moved and adjusted in angle according to the position of the pump leg when the pump leg is clamped, and the operation is more convenient.

In this embodiment, the locking member includes a first locking member and a second locking member.

Specifically, as shown in fig. 3, the first locking member includes a first threaded rod 223 and a first locking nut 224 in threaded engagement with the first threaded rod 223, the first threaded rod 223 is rotatably connected to the first end of the first clamping portion 221 and movably passes through the first end of the second clamping portion 222, and the first locking nut 224 can lock the first end of the second clamping portion 222 to the first end of the first clamping portion 221 by rotating on the side of the second clamping portion 222 facing away from the first clamping portion 221;

the second locking member is configured to lock the second end of the second clamping portion 222 and the second end of the first clamping portion 221 together when the second clamping portion 222 rotates to the locked state relative to the first clamping portion 221.

Alternatively, as shown in fig. 3, the second locking member includes a second threaded rod 225 and a second locking nut 226 threadedly engaged with second threaded rod 225;

a groove (not shown) is formed on an end surface (an end surface indicated by a in fig. 3) of the second end of the second clamping portion 222, when the second clamping portion 222 rotates to the locking state relative to the first clamping portion 221, the second threaded rod 225 enters the groove, and the second locking nut 226 is locked on a side of the second clamping portion 222 away from the first clamping portion 221.

It is understood that the second locking member may also be a bolt passing through correspondingly disposed holes on the first clamping portion 221 and the second clamping portion 222, or a clamping structure clamping the second ends of the second clamping portion 221 and the second clamping portion 222, which is not limited herein.

It will also be appreciated that the locking mechanism 22 for locking the pump legs is not limited to the above-described configuration, and that it is possible to unlock at least two of the pumps from the support platform 21 to prevent the pump body from moving.

adopting a holding component to hold a rotor of the pump to be disassembled;

positioning the clasping member on a predetermined structure.

Wherein said positioning said clasping member on a predetermined structure comprises:

and a positioning pin penetrates through a positioning hole formed in the clasping component and is positioned on a pump body base of the pump to be disassembled and assembled.

The rotor disassembling and assembling method further comprises the following steps: and at least two locking mechanisms fixed on the supporting platform are adopted to respectively lock the pump legs of the pump to be disassembled, wherein the pump to be disassembled is positioned on the supporting platform.

The following describes in detail a specific procedure for disassembling the rotor of the molecular pump according to one embodiment.

In one embodiment, as shown in fig. 6 and 7, a rotor 3 of the molecular pump is fixed to a main shaft 5 by bolts 6, and blades are provided on the upper part of the rotor 3 and a traction disc is provided on the lower part.

Firstly, the pump leg of the molecular pump is locked by the pump leg locking tool 2. Specifically, when the molecular pump is placed on the support platform 21, the three locking mechanisms 22 move to appropriate positions along the sliding grooves 221 on the support platform 21 and lock one pump leg respectively, the structure of the pump leg locking tool 2 and the way of locking the pump legs as described in the above embodiments can be referred to.

Then, the rotor 3 is clasped by the clasping component of the rotor clasping tool 1, specifically, the rotor 3 is clasped at a position between the blade and the traction disc, the manner of clasping the rotor by the clasping component refers to the description of the above embodiment, and then the clasping component is positioned on the opening formed on the pump body base 4 of the molecular pump by the positioning pin 18, so that the rotor 3 is positioned on the pump body base 4 in the circumferential direction.

The rotor 3 is circumferentially positioned on the pump body base 4, and after the pump body base 4 is locked on the supporting table 21, the bolt 6 is rotated by using tools such as a wrench, and the bolt 6 can be conveniently detached, so that the rotor 3 and the main shaft 5 are separated.

The mounting and dismounting of the rotor 3 on the main shaft 5 is similar and will not be described in detail here.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modifications, equivalents and the like that are within the spirit and principle of the present application should be included in the scope of the present application.

Claims

1. The positioning device for disassembling and assembling the rotor is characterized by comprising a rotor holding tool, wherein the rotor holding tool comprises a holding part and a positioning part;

2. The positioning device of claim 1, wherein the clasping means comprises a first clasping arm, a second clasping arm, and a locking member, wherein the first clasping arm and the second clasping arm are relatively rotatable to an open state and a closed state; in the open state, the rotor can be accommodated between the first and second clasping arms, and in the closed state, the first and second clasping arms clasping the rotor, and the locking member is configured to lock the first and second clasping arms in the closed state;

3. The positioning device as set forth in claim 2 wherein said clasping member further comprises a connecting plate, said first clasping arm being hingedly connected to said connecting plate via a first hinge, said second clasping arm being hingedly connected to said connecting plate via a second hinge.

4. The positioning device according to claim 2, wherein the positioning member is a positioning pin, and a positioning hole is provided in at least one of the first clasping arm and the second clasping arm, and the positioning pin passes through the positioning hole in an axial direction of the rotor and is positioned on an opening provided in the predetermined structure when the first clasping arm and the second clasping arm clasp the rotor.

5. The positioning device according to claim 4, wherein the first clasping arm and the second clasping arm each comprise a clasping body for clasping on a rotor and a positioning arm protruding outward from the clasping body, and the positioning hole is provided on the positioning arm;

6. The positioning device according to claim 2, wherein the inner sides of the first and second clasping arms are respectively provided with a flexible member for contacting the rotor.

7. The positioning device according to any one of claims 1 to 6, further comprising a pump leg locking tool, wherein the pump leg locking tool comprises a support table for supporting the pump to be disassembled and assembled and at least two locking mechanisms connected to the support table, and each locking mechanism is used for locking one pump leg of the pump to be disassembled and assembled;

8. The positioning device according to claim 7, wherein a sliding groove is formed in the support table, an installation portion with an installation hole is formed in the first clamping portion, and the pump leg locking tool further comprises a connecting bolt which penetrates through the installation portion and the sliding groove to connect the installation portion to the support table;

wherein the connecting bolt can move along the sliding groove, and the mounting part can rotate around the connecting bolt relative to the support platform.

9. The positioning device of claim 7, wherein the locking member comprises a first locking member and a second locking member;

10. A method of disassembling and assembling a rotor, comprising:

adopting a holding component to hold a rotor of the pump to be disassembled;

positioning the clasping member on a predetermined structure;