CN-121976967-A - Adjustable manual jigger device and use method thereof

CN121976967ACN 121976967 ACN121976967 ACN 121976967ACN-121976967-A

Abstract

The invention discloses an adjustable manual jigger device and a use method thereof, wherein the adjustable manual jigger device comprises semicircular seat bodies, movable claw clamps and driving components, the two semicircular seat bodies are in semicircular shapes, are coaxially connected in a butt joint and screwed mode to form a complete circular ring, are sleeved on a half coupling at intervals with an axle center, two square grooves matched with the movable claw clamps are vertically embedded in the front face of each semicircular seat body at intervals along the circumferential direction of the front face, each square groove extends out of the inner arc surface and the outer arc surface of the corresponding semicircular seat body in the radial direction, radial guide rails are embedded in the positions, corresponding to the two side surfaces of each square groove, of each semicircular seat body, are arranged on the front face side close to the corresponding semicircular seat body, extend out of the inner arc surface and the outer arc surface of the corresponding semicircular seat body in the radial direction respectively, and are mounted in the corresponding square grooves in the radial direction respectively and are connected with the corresponding radial guide rails in a sliding mode through the driving components. The invention can ensure the matching precision and long-term operation stability of the rotor system.

Inventors

GU CHUNRONG
CAO XIAOJIAN
YAO JIAQI
QIU WENQIAN
ZHANG JIE
JI TIANYU
LIU XUEQING

Assignees

金通灵科技集团股份有限公司

Dates

Publication Date: 20260505
Application Date: 20260326

Claims (10)

1. The adjustable manual jigger device is characterized by comprising semicircular base bodies, movable claw clamps and driving components, wherein the two semicircular base bodies are in a semicircular shape and are coaxially connected in a butt joint mode to form a complete circular ring in a sleeved mode at intervals with the same axis, two square grooves matched with the movable claw clamps are sequentially and vertically embedded in the front face of each semicircular base body at intervals along the circumferential direction of the front face, each square groove extends out of the inner and outer cambered surfaces of the corresponding semicircular base body in the radial direction and does not extend out of the back face of the corresponding semicircular base body, radial guide rails are embedded in the positions, corresponding to the two circumferential side faces of each square groove, of each semicircular base body, each radial guide rail is arranged on the front face side of the corresponding semicircular base body and extends out of the inner and outer cambered surfaces of the corresponding semicircular base body in the radial direction, the four movable claw clamps are respectively arranged in the corresponding square grooves in the radial direction and are connected with the corresponding semicircular base body in a sliding mode through the driving components in a corresponding mode, and the four movable claw clamps are evenly locked in the radial direction, and the coupling is tightly locked.
2. The adjustable manual turning device of claim 1, wherein a first arc groove is formed in the opposite side of the end face of each semicircular seat body in an embedded mode along the arc direction of the end face of each semicircular seat body, the thickness of each first arc groove is half of the thickness of the corresponding semicircular seat body, one side surface of each first arc groove extends out of the opposite side of the corresponding semicircular seat body, the inner and outer cambered surfaces of each second arc groove extend out of the corresponding inner and outer cambered surfaces of the corresponding semicircular seat body respectively, one end of each semicircular seat body forms a splicing block I located on the front side through the first arc groove, a second arc groove is formed in the opposite side of the other end face of each semicircular seat body in an embedded mode along the arc direction of the same axis of the other end face of each semicircular seat body, the second arc grooves are matched with the corresponding first arc grooves, the arc lengths of the second arc grooves are consistent, the thickness of each second arc groove is half of the corresponding semicircular seat body, one side surface of each second arc groove extends out of the corresponding semicircular seat body, the front side of each inner and outer cambered surface of each semicircular seat body corresponds to the corresponding semicircular seat body, one end of each semicircular seat body extends out of the corresponding semicircular blocks respectively, and the corresponding semicircular blocks are located on the opposite sides of the two semicircular seat bodies, and the two semicircular seats are matched with the two semicircular seats, and the two semicircular seats are matched with the two matched with each other, and the two semicircular seat bodies are located on the opposite sides, and the opposite sides II are matched with the opposite sides, and the two semicircular seat bodies, and the two corresponding semicircular seats are matched with the two corresponding arc bodies, and each semicircular grooves are formed.
3. The adjustable manual jigger device is characterized by further comprising connecting screws, wherein a plurality of counter bores I matched with the connecting screws are vertically embedded in the front face of each splicing block I at intervals, the small diameter end of each counter bore I vertically extends out of the back face of the corresponding splicing block I, a plurality of threaded holes matched with the connecting screws are vertically embedded in the back face of each splicing block II at intervals, the opening position of each threaded hole corresponds to the opening position of each counter bore I, and two semicircular seats spliced together coaxially are screwed and fixed through the screwed fit of the connecting screws, the counter bores I and the corresponding threaded holes.
4. The adjustable hand jigger of claim 1, wherein each square groove is provided with an angle of 90 degrees when two semicircular seat bodies are spliced together coaxially, so that four movable claw clamps uniformly hold the half coupling.
5. The adjustable manual jigger device according to claim 1, further comprising a circular groove embedded in each semicircular seat body at a position corresponding to the bottom of each square groove, wherein both ends of each circular groove in the length direction extend out of inner and outer cambered surfaces of the corresponding semicircular seat body in the radial direction respectively and are communicated with the corresponding square groove integrally, the diameter of each circular groove is matched with the circumferential width of the corresponding square groove, a rod hole is embedded in each semicircular seat body at a position corresponding to the middle section of each circular groove vertically along the thickness direction of the semicircular seat body, and each rod hole is communicated with the corresponding circular groove and extends out of the reverse surface of the corresponding semicircular seat body vertically.
6. The adjustable hand jigger device according to claim 5, wherein each movable claw clip extends out of the corresponding semicircular seat body, one end face of the cambered surface is a working face of the movable claw clip, nonmetal gaskets with low hardness and high friction coefficient are respectively attached and fixed on the working faces of the movable claw clips, the contact faces of the movable claw clips are further increased through the nonmetal gaskets, meanwhile, the clamping of the half coupling is prevented, the thickness of each movable claw clip is smaller than the opening depth of the corresponding square groove, dovetail grooves matched with the radial guide rails are respectively and vertically embedded in the positions of two circumferential side faces of the movable claw clip relative to the radial guide rails, and each dovetail groove vertically extends out of the two radial end faces of the corresponding movable claw clip, and the stability of sliding adjustment of the movable claw clip along the radial direction of the semicircular seat body is ensured through the cooperation of the dovetail grooves and the corresponding radial guide rails.
7. The adjustable manual turning device of claim 6, wherein the driving assembly comprises a screw rod, a positioning rod and a fixing screw, wherein the screw rod matched with the screw rod is sleeved in each circular groove in a coaxial manner, the length of each screw rod is matched with the length of the corresponding circular groove, a half thread matched with the screw rod is further formed on the surface of each movable claw close to the corresponding screw rod side along the length direction of the movable claw, the screw rod is respectively connected with half threads of the corresponding movable claw clamp, a clamping groove is further formed in the middle section of each screw rod along the position of a rod hole in a coaxial manner, the middle section of the corresponding screw rod is made to be a polish rod through the clamping groove, a transmission interface matched with a spanner is further formed in the end face of each screw rod close to the outer arc face side of a semicircular seat in a coaxial manner, a semicircular clamping groove matched with the clamping groove is formed in one end of each movable claw clamp, the end face of each semicircular seat is respectively connected with the opposite end face of the corresponding semicircular seat in a radial direction, the opposite side face of the corresponding semicircular seat is further arranged at one end face of the corresponding semicircular seat, the opposite face of the semicircular seat is axially extended towards the opposite to the corresponding screw rod, the opposite face of the corresponding seat is further, the end of the semicircular seat is axially matched with the corresponding seat is further, the threaded seat is axially inserted into the opposite face of the corresponding seat, and the end is further is axially inserted into the end of the threaded seat through the corresponding seat, each counter bore II is arranged next to the corresponding rod hole, the large diameter end of each counter bore II is respectively communicated with the corresponding rod hole, a fixing groove is further vertically embedded in the other end face of each positioning rod close to the corresponding fixing hole, a step is formed at the other end of the corresponding positioning rod through the fixing groove, after the fixing screw is screwed into the corresponding counter bore II, one side of the large diameter end of the fixing screw is abutted to the corresponding fixing groove, and the corresponding positioning rod is respectively positioned in the radial direction, so that the positioning rod is prevented from sliding out of the semicircular seat body.
8. The adjustable manual turning gear according to claim 7, wherein each screw rod and each half thread of the movable claw clamp are trapezoidal threads, the tooth angle of each screw rod is 30 degrees, and the thread lead angle is smaller than 3 degrees, so that the self-locking property of the movable claw clamp after being installed in place is ensured while the thread strength is met.
9. The adjustable manual jigger device according to claim 7, wherein circular arc-shaped weight removing grooves are respectively and coaxially embedded in the front side and the back side of each semicircular base body relative to the two circumferential sides of each square groove, each weight removing groove on the front side and each weight removing groove on the back side are positively and negatively symmetrically arranged, the radial adjusting action of each movable claw is respectively free from interference, the weight of the whole jigger device is realized through the weight removing grooves, a plurality of lifting holes are respectively and vertically embedded in the positions of each semicircular base body relative to each weight removing groove at intervals along the circumferential direction, and prying holes matched with prying bars are respectively and vertically embedded in the radial directions between the outer circumferential surface of each semicircular base body relative to the corresponding two square grooves.
10. The use method of the adjustable manual jigger device according to any one of claims 1 to 9, characterized by comprising the following steps: Firstly, cleaning oil stains on the outer circle surface of a half coupling to be clamped so as to ensure the friction coefficient; Secondly, reversely rotating the screw rod through a transmission interface by adopting a spanner, so that the opening diameter of the four movable claw clamps is larger than the outer diameter of the half coupling; thirdly, sleeving the jigger device on a preset clamping position of the half coupling, and fastening a connecting screw; step four, the screw rods are rotated forwards alternately according to the diagonal sequence, so that the working surfaces of the four movable claw clamps are sequentially contacted with the outer circle surface of the half coupling; Step five, gradually increasing the clamping force according to the diagonal sequence until the movable claw clamps uniformly clamp the half coupling and transition clamping is forbidden; step six, inserting the pry bar into the corresponding pry hole, and then stably coiling the rotor at a constant speed; And seventhly, after the completion, reversely rotating the screw rod to enable the four movable claw clamps to retract, and then taking down the jigger device.

Description

Adjustable manual jigger device and use method thereof Technical Field The invention relates to the technical field of installation and maintenance of centrifugal compressors, in particular to an adjustable manual jigger device and a use method thereof. Background In the process of installation, overhaul and shutdown maintenance of a centrifugal compressor, regular rotor coiling is an indispensable key process, and the aims are that 1) whether jamming or friction exists between a rotor and a stator is checked, 2) bending deformation of a large shaft due to long-term static gravity is prevented, and 3) conditions are provided for subsequent processes such as centering and alignment. At present, aiming at the manual jigger operation of a large-sized centrifugal compressor, the field usually adopts two modes, namely 1) a crowbar is inserted into a bolt hole or a bolt hole of a coupler by an operator through the use of a crowbar or a special spanner, and the coupler is driven to rotate through lever force, and 2) a belt is rubbed, namely, the belt is wound on the outer circle of the coupler, and the rotor is driven to rotate through friction force generated by tensioning. However, the prior art has obvious limitations in actual operation that 1) equipment is easy to damage, rigid contact is formed between a crowbar and a metal hole wall, contact stress is large, extrusion deformation, scratch or hemming is easily generated on the edge of a pin hole or a bolt hole of a coupler, the matching precision of the coupler is damaged, the original dynamic balance of a rotor is possibly influenced, 2) tool applicability is poor, a crowbar spanner is usually fixed in size and can only adapt to a coupler with a specific hole pitch, a plurality of sets of special tools are often required to be manufactured for compressors with different specifications, and therefore, management cost is obviously increased. Therefore, how to develop an adjustable manual jigger device to solve the problems of easy damage of the coupling, poor adaptability to couplings of different specifications, portability and safety of field operation and the like of the existing jigger tool has become a difficult problem to be solved at present. Disclosure of Invention The invention aims to solve the technical problem of providing an adjustable manual turning device and a use method thereof, which can avoid the use of a metal tool to be directly inserted into a stud hole or a bolt hole of a half coupler for rigid driving, thereby preventing the precise hole wall and the outer circular surface of the half coupler from being scratched, extruded and deformed and other irreversible mechanical damages, and ensuring the matching precision and long-term running stability of a rotor system. The adjustable manual turning device comprises semicircular base bodies, movable claw clamps and driving components, wherein the semicircular base bodies are in a semicircular ring shape and coaxially connected in a butt joint mode to form a complete circular ring in a sleeved mode at intervals, two square grooves matched with the movable claw clamps are vertically embedded in the front face of each semicircular base body at intervals along the circumferential direction of the front face, each square groove extends out of the inner and outer cambered surfaces of the corresponding semicircular base body in the radial direction, the opposite faces of the corresponding semicircular base body are not extended out of the square groove, radial guide rails are embedded in the positions, corresponding to the two circumferential side faces of each square groove, of each semicircular base body, each radial guide rail is arranged on the front face side of the corresponding semicircular base body, the corresponding inner and outer cambered surfaces of the semicircular base body are respectively and radially extended out of the square groove, the four movable claw clamps are in a strip shape and are respectively and radially and tightly connected with the driving components through the square grooves in a corresponding manner, and the driving components are further evenly locked in the square groove. Preferably, a first circular arc groove is embedded and formed in the end face of one end of each semicircular seat body near the back side along the circular arc direction coaxial center of the semicircular seat body, the thickness of each first circular arc groove is half of the thickness of the corresponding semicircular seat body, one side surface of each first circular arc groove extends out of the back side of the corresponding semicircular seat body, the inner and outer cambered surfaces of each first circular arc groove extend out of the corresponding inner and outer cambered surfaces of the corresponding semicircular seat body respectively, one end of each semicircular seat body forms a splicing block I positioned on the front side through the first circular arc groove, a second circu