CN215057929U

CN215057929U - Rotor locking mechanism

Info

Publication number: CN215057929U
Application number: CN202121289604.4U
Authority: CN
Inventors: 刘标; 高飞; 陈俊如
Original assignee: Beijing Guodian Sida Technology Co ltd
Current assignee: Beijing Guodian Sida Technology Co ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2021-12-07
Anticipated expiration: 2031-06-09

Abstract

The utility model provides a rotor locking mechanical system, include: a rotor positioning pin; one end of the screw rod is inserted into the connecting groove of the rotor positioning pin and performs shaft rotation movement in the rotor positioning pin; and the ratchet wheel assembly is sleeved at the other end of the screw rod and used for limiting the screw rod to do unidirectional axial rotation motion. An object of the utility model is to provide a rotor locking mechanical system has solved among the prior art impeller mechanical lock structure well and has locked the impeller and lead to the rotor locating pin to return the problem in the mechanical lock.

Description

Rotor locking mechanism

Technical Field

The utility model belongs to the technical field of rotor locking technique and specifically relates to a rotor locking mechanism is related to.

Background

The mechanical lock structure locked by the wind driven generator set impeller is driven by the screw rod structure, and the screw rod is rotated to enable the mechanical lock rotor positioning pin to extend out and enter the positioning hole of the impeller rotor locking disc, so that the impeller is prevented from rotating.

However, the existing mechanical lock structure of the impeller locks the impeller, the impeller in a blade retracting state slightly rotates along with the change of wind speed under the condition of long-term impeller locking, a positioning hole of an impeller rotor locking disc repeatedly rubs a mechanical lock rotor positioning pin to cause the tendency of the rotor positioning pin to retract into the mechanical lock, and the long-term friction causes the rotor positioning pin to retract into the mechanical lock, so that great potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rotor locking mechanical system aims at solving among the prior art impeller mechanical lock structure and locks the impeller and lead to the rotor locating pin to return the problem in the mechanical lock.

The utility model provides a rotor locking mechanical system, include: a rotor positioning pin; one end of the screw rod is inserted into the connecting groove of the rotor positioning pin and performs shaft rotation movement in the rotor positioning pin; and the ratchet wheel assembly is sleeved at the other end of the screw rod and used for limiting the screw rod to do unidirectional axial rotation motion.

Further, the rotor locking mechanism further comprises a locking plate; the ratchet assembly is mounted on the locking plate.

Further, the ratchet assembly comprises a ratchet, a pawl, a cam rotating rod and a cam; the ratchet wheel is sleeved on the outer side of the screw rod, and one side face of the ratchet wheel is in contact with the locking plate; the cam rotating rod penetrates through the locking plate to be connected with the cam so as to drive the cam to do axial rotation movement; the pawl is in contact with the cam, one end of the pawl is connected with the locking plate, and the other end of the pawl is in contact with the ratchet wheel.

Further, the ratchet assembly further comprises a spring; one end of the spring is fixedly connected to the locking plate, and the other end of the spring is connected with the pawl.

Furthermore, a spring fixing pin is arranged on the locking plate, and a connecting lug is arranged on the pawl; one end of the spring is sleeved on the spring fixing pin, and the other end of the spring is fixedly connected with the connecting lug.

Further, the rotor locking mechanism also comprises a lead screw nut and a pressure ring; the screw rod nut and the compression ring are embedded into the connecting groove, and are sleeved on the screw rod; the screw rod nut is located on the inner side of the compression ring.

Further, the rotor locking mechanism further comprises a cover plate; the cover plate is sleeved on the screw rod; the cam rotating rod sequentially penetrates through the cover plate, the locking plate and the cam.

Furthermore, the compression ring and the rotor positioning pin are both provided with a first threaded hole; and a first bolt penetrates through the first threaded hole to assemble the pressing ring on the rotor positioning pin.

Furthermore, second threaded holes are formed in the cover plate and the locking plate; and a second bolt penetrates through the second threaded hole to assemble the cover plate on the locking plate.

Furthermore, a sliding groove is formed in the rotor positioning pin.

The technical scheme of the utility model reach through the locking lead screw and prevent that the rotor locating pin from returning in the mechanical lock, during clockwise rotation lead screw, the rotor locating pin stretches out mechanical lock, and ratchet subassembly restriction lead screw can only make folk prescription axial rotation motion, therefore, when the impeller under receiving the oar state has slight rotation, ratchet subassembly prevents that the lead screw from making anticlockwise rotation motion, in the mechanical lock can't be returned to the rotor locating pin, solved well through locking the impeller and lead to the rotor locating pin easily to appear returning the problem in the mechanical lock among the prior art.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front sectional view of a rotor locking mechanism according to an embodiment of the present invention;

fig. 2 is an exploded view of a rotor locking mechanism provided in an embodiment of the present invention;

fig. 3 is a schematic connection diagram of a ratchet assembly according to an embodiment of the present invention;

fig. 4 is a side view of the ratchet assembly according to an embodiment of the present invention.

Description of reference numerals:

1 is a rotor positioning pin, 11 is a connecting groove, and 12 is a sliding groove; 2 is a screw rod;

3 is a ratchet assembly, 31 is a ratchet, 32 is a pawl, 33 is a cam rotating rod, 34 is a cam, 35 is a spring, 36 is a spring fixing pin, and 37 is a connecting lug;

4 is a locking plate; 5 is a screw nut;

6 is a press ring, and 61 is a first bolt;

7 is a cover plate, 71 is a second bolt;

8 is a bearing seat, 81 is an oil filling cup, and 82 is a limit screw.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-2, the present invention provides a rotor locking mechanism, which is installed inside a bearing seat 8, the rotor locking mechanism includes a rotor positioning pin 1 and a screw rod 2, the rotor positioning pin 1 makes axial telescopic motion inside the bearing seat 8, one end of the screw rod 2 is inserted into a connecting groove 11 of the rotor positioning pin 1, and makes axial rotation motion inside the rotor positioning pin 1; the rotor positioning pin 1 is provided with a sliding groove 12, the limit screw 82 is positioned in the sliding groove 12 to limit the rotor positioning pin 1 to only do axial telescopic motion but not axial rotation motion, and further the telescopic length of the rotor positioning pin 1 is controlled.

An oil filling cup 81 is further arranged at the top of the bearing seat 8, and oil is filled into the contact surface of the rotor positioning pin 1 and the bearing seat 8, so that the friction resistance generated when the rotor positioning pin 1 and the bearing seat 2 move relatively is reduced.

The rotor locking mechanism also comprises a lead screw nut 5 and a pressure ring 6; the screw rod nut 5 and the compression ring 6 are both embedded into the connecting groove 11, and the screw rod nut 5 and the compression ring 6 are both sleeved on the screw rod 2; the lead screw nut 5 is positioned on the inner side of the compression ring 6.

The screw nut 5 is matched with the screw rod 2, and when the screw rod 2 does the shaft rotation motion, the screw nut 5 is fixed and does not do the shaft rotation motion along with the screw rod 2, which is because: suppose that screw-nut 5 also makes axle rotary motion along with lead screw 2, and axial shrinkage motion can't be made to rotor positioning pin 1, and the effect that sets up clamping ring 6 lies in: and the lead screw nut 5 is fixed, and the pressing ring 6 is pressed on the lead screw nut 5 to prevent the lead screw nut 5 from rotating.

The mode that the clamping ring 6 fixes the screw rod nut 5 is as follows: the compression ring 6 and the rotor positioning pin 1 are both provided with a first threaded hole; the first bolt 61 penetrates through the first threaded hole to assemble the compression ring 6 on the rotor positioning pin 1, and the effect of fixing the lead screw nut 5 is achieved through bolt connection.

Rotor locking mechanical system still includes lockplate 4 and ratchet assembly 3, ratchet assembly 3 cover is established the other end of lead screw 2 is in order to be used for the restriction the unilateral axle rotary motion is made to lead screw 2, ratchet assembly 3 installs on lockplate 4.

The ratchet wheel assembly 3 is arranged, and has the effects that: the screw rod 2 is limited to rotate only in a single direction, so that the rotor positioning pin cannot return into the mechanical lock.

Referring to fig. 3-4, the ratchet assembly 3 includes: a ratchet 31, a pawl 32, a cam rotating lever 33, and a cam 34; the ratchet wheel 31 is sleeved on the outer side of the screw rod 2, and one side surface of the ratchet wheel 31 is in contact with the locking plate 4; the cam rotating rod 33 penetrates through the locking plate 4 to be connected with the cam 34 so as to drive the cam 34 to do axial rotation movement; the pawl 32 is in contact with the cam 34, and one end of the pawl 32 is connected to the lock plate 4 and the other end is in contact with the ratchet 31.

The working principle is as follows: the tooth end of the pawl 32 is clamped in the tooth groove of the ratchet wheel 31, so that the screw rod 2 can only be rotated clockwise in a single direction, at the moment, the rotor positioning pin 1 extends out, the screw rod 2 cannot be rotated anticlockwise, and the rotor positioning pin 1 cannot retract; if need withdraw rotor locating pin 1, only need stir the cam dwang 33 of terminal surface, cam dwang 33 drives cam 34 and rotates jack-up pawl 32, pawl 32 with ratchet 31 contactless this moment can make its lead screw 2 anticlockwise rotation, realizes withdrawing rotor locating pin 1.

The ratchet assembly 3 further comprises a spring 35; one end of the spring 35 is fixedly connected to the locking plate 4, and the other end is connected with the pawl 32; the effect of setting up spring 35 lies in: retracting the pawl 32 to bring the pawl 32 into contact with the ratchet 31; when the cam rotating rod 33 is pulled, the pawl 32 is not in contact with the ratchet wheel 31, the spring 35 is in an elongated state at the moment, when the rotor positioning pin 1 is retracted to a proper position, the cam rotating rod 33 is loosened, and due to the elastic force of the spring 35, the pawl 32 is pulled back to enable the pawl 32 to be clamped with a clamping groove of the ratchet wheel 31, so that the rotor positioning pin 1 is prevented from being retracted.

Further, a spring fixing pin 36 is arranged on the locking plate 4, and a connecting lug 37 is arranged on the pawl 32; one end of the spring 35 is sleeved on the spring fixing pin 36, and the other end of the spring 35 is fixedly connected with the connecting lug 37.

The rotor locking mechanism further comprises a cover plate 7; the cover plate 7 is sleeved on the screw rod 2; the cam rotating rod 33 sequentially penetrates through the cover plate 7, the locking plate 4 and the cam 34 to be connected.

Further, second threaded holes are formed in the cover plate 7 and the locking plate 4; second bolts 71 pass through the second threaded holes to fit the cover plate 7 to the lock plate 4.

The use method of the rotor locking mechanism comprises the following steps: the lead screw 2 is rotated clockwise, the rotor positioning pin 1 is pushed out, after the rotor positioning pin 1 is pushed to the position, the ratchet wheel 31 and the pawl 32 are clamped to achieve the rotation stopping effect on the lead screw 2, so that the phenomenon that the rotor positioning pin 1 is automatically withdrawn due to long-time locking is prevented, when the rotor positioning pin 1 needs to be withdrawn, the cam rotating rod 33 only needs to be shifted or rotated, the cam 34 is rotated, the pawl 32 is jacked to enable the pawl 32 to be not in contact with the ratchet wheel 31, and the lead screw 2 is rotated anticlockwise to further withdraw the rotor positioning pin 1.

Therefore, the technical scheme of the utility model reach through the locking lead screw and prevent that the rotor locating pin from returning in the mechanical lock, during clockwise rotation lead screw, the rotor locating pin stretches out the mechanical lock, and ratchet subassembly restriction lead screw can only make folk prescription axial rotation motion, therefore, when the impeller under receiving the oar state has slight rotation, ratchet subassembly prevents that the lead screw makes anticlockwise rotation motion, in the mechanical lock can't be returned to the rotor locating pin, solved well among the prior art through locking the impeller and lead to the rotor locating pin easily to appear returning the problem in the mechanical lock.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A rotor locking mechanism, comprising:

a rotor positioning pin;

one end of the screw rod is inserted into the connecting groove of the rotor positioning pin and performs shaft rotation movement in the rotor positioning pin;

and the ratchet wheel assembly is sleeved at the other end of the screw rod and used for limiting the screw rod to do unidirectional axial rotation motion.

2. The rotor locking mechanism of claim 1, further comprising a locking plate;

the ratchet assembly is mounted on the locking plate.

3. The rotor locking mechanism of claim 2, wherein the ratchet assembly comprises a ratchet, a pawl, a cam rotating lever, and a cam;

the ratchet wheel is sleeved on the outer side of the screw rod, and one side face of the ratchet wheel is in contact with the locking plate;

the cam rotating rod penetrates through the locking plate to be connected with the cam so as to drive the cam to do axial rotation movement;

the pawl is in contact with the cam, one end of the pawl is connected with the locking plate, and the other end of the pawl is in contact with the ratchet wheel.

4. The rotor locking mechanism of claim 3, wherein the ratchet assembly further comprises a spring;

one end of the spring is fixedly connected to the locking plate, and the other end of the spring is connected with the pawl.

5. The rotor locking mechanism according to claim 4, wherein the locking plate is provided with a spring fixing pin and the pawl is provided with an engaging lug;

one end of the spring is sleeved on the spring fixing pin, and the other end of the spring is fixedly connected with the connecting lug.

6. The rotor locking mechanism of claim 1, further comprising a feed screw nut and a compression ring;

the screw rod nut and the compression ring are embedded into the connecting groove, and are sleeved on the screw rod;

the screw rod nut is located on the inner side of the compression ring.

7. The rotor locking mechanism of claim 3, further comprising a cover plate;

the cover plate is sleeved on the screw rod;

the cam rotating rod sequentially penetrates through the cover plate, the locking plate and the cam.

8. The rotor locking mechanism according to claim 6, wherein the compression ring and the rotor positioning pin are both provided with a first threaded hole;

and a first bolt penetrates through the first threaded hole to assemble the pressing ring on the rotor positioning pin.

9. The rotor locking mechanism according to claim 7, wherein the cover plate and the locking plate are provided with second threaded holes;

and a second bolt penetrates through the second threaded hole to assemble the cover plate on the locking plate.

10. The rotor locking mechanism of claim 1, wherein the rotor detent pin defines a slot.