CN214828389U - Auxiliary lifting appliance for rotor structure of turboexpander - Google Patents

Abstract

The utility model discloses a turbo expander rotor structure auxiliary lifting appliance, which comprises a lifting beam, wherein two ends of the lifting beam are respectively provided with a main lifting arm along the length direction of the lifting beam in a sliding manner, one end of the main lifting arm, which is far away from the lifting beam, is provided with a fixed frame, an internal expansion fixture is arranged at the center of the fixed frame, which is close to one side of a rotor, the upper side and the lower side of the fixed frame are symmetrically provided with end fixtures in a sliding manner, one side of the fixed frame, which is close to the rotor, is provided with a plurality of auxiliary stabilizing air bags along the circumferential direction, and one side of the fixed frame, which is far away from the rotor, is provided with an inflatable bag connected with the auxiliary stabilizing air bags; the utility model discloses have and stabilize fixed function to important structures such as the structural impeller of rotor, bearing, have the steadiness of guaranteeing hoist and mount in-process rotor structure and the beneficial effect of security.

Description

Auxiliary lifting appliance for rotor structure of turboexpander

Technical Field

The utility model belongs to the technical field of hoist device, concretely relates to auxiliary lifting device of turboexpander rotor structure.

Background

The rotor structure is one of important components used for rotating and pressurizing in a turbo expander, and when the rotor structure is installed in a volute of the turbo expander, the components such as a bearing, a positioning clamp, an impeller and the like are generally installed on a main shaft in advance to form the rotor structure, and then the rotor structure is hoisted to the volute through a hoisting tool to be installed. But traditional rotor hoist simply articulates with rotor structure through connection structure such as lifting rope, lifting hook, at the in-process of actual hoist and mount rotor structure, because rocking of lifting rope, very easily drive rotor structure and take place to rock. When the shaking or vibration amplitude is large, important parts such as a bearing, an impeller and the like on the main shaft structure are easy to displace and even damage. Especially for the impeller subassembly of installation on the main shaft, because impeller structure is complicated and intensity is relatively weak, very easily cause the not hard up of impeller or even the damage of impeller blade in traditional hoist and mount in-process.

Consequently, hoist and mount to traditional turboexpander rotor structure hoist existence are firm inadequately, cause the defect that rotor structure rocked easily, the utility model discloses a turboexpander rotor structure assists hoist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a turbo expander rotor structure assists hoist realizes stabilizing fixedly to rotor structure, guarantees the steadiness of rotor structure hoist and mount in-process.

The utility model discloses a following technical scheme realizes:

the utility model provides a turbo expander rotor structure auxiliary lifting device, includes the hanging beam, the both ends of hanging beam slide along the length direction of hanging beam respectively and are provided with main davit, the one end that the hanging beam was kept away from to main davit is provided with the mount, the center department that the mount is close to rotor one side is provided with the anchor clamps that expand in, the upper and lower bilateral symmetry of mount slides and is provided with the tip anchor clamps, the mount is provided with the supplementary air bag that stabilizes of a plurality of along circumference on being close to one side of rotor, be provided with the gas cell of being connected with supplementary air bag on the one side of keeping away from the rotor of mount.

The rotor of the turboexpander comprises a main shaft, impellers sleeved at two ends of the main shaft and a bearing sleeved on a shaft section between the two ends of the main shaft. The main suspension arms at the two ends of the suspension beam are respectively slid, so that the distance between the main suspension arms at the two ends is adjusted to adapt to the length of the rotor for hoisting.

The fixing frame at the end part of the main suspension arm is used for installing an internal expansion fixture and an end part fixture, the internal expansion fixture is arranged corresponding to the central hole of the impeller, and the internal expansion fixture stretches into the central hole of the impeller and fixes the central hole of the impeller in an internal expansion mode, so that the central hole of the impeller is fixed. The end clamps are arranged corresponding to the outer contour of the end face of the impeller, the clamping ends of the end clamps are attached to the outer contour of the end face of the impeller by respectively sliding the end clamps on the upper side and the lower side of the fixing frame, the upper side and the lower side of the outer contour of the end face of the impeller are clamped and fixed by the end clamps on the upper side and the lower side, and the outer contour of the end face of the impeller is fixed.

The clearance between the blade that corresponds the impeller on the mount is provided with the supplementary air bag that stabilizes of a plurality of along circumference, and supplementary air bag that stabilizes is in the shrivelled state at ordinary times, fixes the centre bore of impeller through the anchor clamps that expand in, fixes the back through the terminal surface outline of tip anchor clamps to the impeller, then can carry out the auxiliary stay through supplementary air bag to the blade of impeller fixed. Place the supplementary air bag of stabilizing of shriveling in the space between the blade, then aerify in supplementary air bag of stabilizing through the gas cell for supplementary air bag of stabilizing expands gradually and is full of the clearance between the blade, and then realizes fixed to the flexible support of blade.

For better realization the utility model discloses, furtherly, the upper and lower bilateral symmetry of mount is provided with the regulation spout, the tip anchor clamps are including rotating the adjusting screw who sets up inside the regulation spout, threaded sleeve is equipped with adjusting block on the adjusting screw, and adjusting block and regulation spout sliding connection, the one end that adjusting block is close to the rotor is provided with the arc chuck.

In order to better realize the utility model discloses, furtherly, one side that the arc chuck is close to the rotor is provided with flexible blotter.

In order to better realize the utility model discloses, furtherly, interior bloated anchor clamps are including the fixed solid section of thick bamboo that sets up in mount center department, the internal thread of solid section of thick bamboo installs interior bloated screw rod, the one end that interior bloated screw rod is close to the rotor is provided with the mounting disc, it is provided with the axial interior bloated piece of a plurality of slip direction perpendicular to rotor to be provided with along circumferential direction slip on the mounting disc, the one end that interior bloated piece is close to solid section of thick bamboo is provided with first inclined plane, the one end that solid section of thick bamboo is close to interior bloated piece is provided with the second inclined plane with first inclined plane cooperation extrusion.

In order to better realize the utility model discloses, furtherly, evenly be provided with two at least perpendicular to rotor axial opening T type grooves along circumference on the mounting disc, the inside slidable mounting of open end in opening T type groove has interior bloated piece, be provided with reset spring between the blind end in opening T type groove and the interior bloated piece.

In order to better realize the utility model discloses, furtherly, fixed inside evenly is provided with two air inflation ways along circumference at least, be provided with the gas tube in the air inflation way, the one end that the gas tube is close to the rotor is connected with supplementary air port of stabilizing the gasbag, the one end that the rotor was kept away from to the gas tube is connected with the inflation inlet of gas cell.

In order to better realize the utility model, furthermore, the gas tube is provided with a vent valve.

For better realization the utility model discloses, furtherly, the length direction that still follows the hanging beam between the both ends of hanging beam slides and is provided with supplementary davit, the one end that supplementary davit kept away from the hanging beam is provided with bottom open-ended U type card, the bottom opening part of U type card is provided with flexible suspender.

For better realization the utility model discloses, furtherly, be provided with the installation spout that supplies main davit and supplementary davit slidable mounting along the length direction symmetry on two relative sides of davit, the one end that main davit and supplementary davit are close to the davit is provided with the U-shaped frame, the open end of U-shaped frame is provided with and extends to the inside gliding slip post along the installation spout of installation spout that extends to.

In order to better realize the utility model discloses, furtherly, one side that lies in the slip post in the installation spout still slides and is provided with the locking sleeve, the last through thread of locking sleeve installs and extends to the inside housing washer of installation spout, housing washer is located one of installation spout inside and serves and set up the compact heap.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

(1) the utility model discloses a set up interior bloated anchor clamps corresponding to the centre bore of impeller, through rotating the interior bloated screw rod of fixed section of thick bamboo inside, and then drive the second inclined plane on the bloated piece and extrude each other with the first inclined plane on the fixed section of thick bamboo in the drive, and then make the interior bloated piece slide towards the inner wall of impeller centre bore, until fixed with the centre bore internal expansion of impeller, effectively guarantee the steadiness of rotor structure in the hoist and mount process;

(2) the utility model discloses a corresponding the excircle profile of impeller terminal surface sets up the tip anchor clamps, through rotating adjusting screw, and then drives the adjusting block in the adjusting chute of both sides about the mount and slides towards being close to the impeller excircle, and then drives the arc chuck of both sides about with the excircle profile of impeller centre gripping fixed, and then effectively guarantees the steadiness of rotor structure in the hoist and mount process;

(3) the utility model discloses a clearance between the blade of corresponding impeller sets up supplementary stable gasbag, through placing the supplementary stable gasbag of shrivelled between the clearance of the blade of impeller, then aerify to supplementary stable gasbag through the gasbag, make supplementary stable gasbag expand the back with the clearance packing between the blade, and then carry out the flexible fixation to the blade, effectively avoid rotor structure hoist and mount in-process blade damage;

(4) the utility model is provided with the main suspension arm at the two ends of the suspension beam in a sliding way, the auxiliary suspension arm is arranged between the two ends of the suspension beam in a sliding way, and the distance between the main suspension arm and the auxiliary suspension arm is adjusted through sliding, so that the distance between the main suspension arm and the auxiliary suspension arm is adjusted, and the compatible hoisting of rotor structures with different lengths and specifications is further adapted;

(5) the utility model discloses a slide on the hanging beam and set up supplementary davit, and the one end that is close to the rotor at supplementary davit sets up U type card, and set up flexible suspender between the open end of U type card, hoist the epaxial bearing of rotor through flexible suspender, the interior bloated anchor clamps on the cooperation main davit are fixed the centre bore of main shaft tip impeller, the tip anchor clamps on the cooperation main davit are fixed the terminal surface excircle profile of main shaft tip impeller, the supplementary gasbag of stabilizing of cooperation carries out flexible fixation to the blade of impeller, and then stability and the security of rotor structure hoist and mount in-process have been improved greatly, avoid rotor structure to take place to rock at hoist and mount in-process.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the end clamp;

FIG. 4 is a schematic view of the internal expansion clamp;

FIG. 5 is a schematic view of the installation of the inner expansion block;

FIG. 6 is an installation schematic of the auxiliary boom;

FIG. 7 is a cross-sectional view of FIG. 6;

FIG. 8 is an installation schematic view of the main boom;

FIG. 9 is a cross-sectional view of FIG. 8;

FIG. 10 is a schematic view of the connection of the stabilizing balloon and the inflatable balloon;

fig. 11 is a schematic view of the fixation of the rotor.

Wherein: 1-hanging a beam; 2-main boom; 3-a fixing frame; 4-an internal expansion clamp; 5-end clamp; 6-auxiliary stabilizing air bag; 7-an inflatable bag; 8-auxiliary suspension arm; 9-U type card; 10-a flexible harness; 11-U-shaped frame; 12-a sliding post; 13-a locking sleeve; 14-a compression screw; 15-a compression block; 41-a fixed cylinder; 42-internal expansion screw rod; 43-mounting a disc; 44-inner swelling block; 51-adjusting screw; 52-adjusting the slide block; 53-arc chuck; 001-main shaft; 002-impeller; 01-adjusting the chute.

Detailed Description

Example 1:

the auxiliary lifting appliance for the rotor structure of the turboexpander comprises a lifting beam 1, wherein two ends of the lifting beam 1 are respectively provided with a main lifting arm 2 in a sliding mode along the length direction of the lifting beam 1, one end, away from the lifting beam 1, of the main lifting arm 2 is provided with a fixing frame 3, the fixing frame 3 is provided with an internal expansion clamp 4 close to the center of one side of a rotor, the upper side and the lower side of the fixing frame 3 are symmetrically provided with end clamps 5 in a sliding mode, one side, close to the rotor, of the fixing frame 3 is provided with a plurality of auxiliary stabilizing air bags 6 along the circumferential direction, and one side, away from the rotor, of the fixing frame 3 is provided with an air bag 7 connected with the auxiliary stabilizing air bags 6.

The rotor of the turboexpander mainly includes a main shaft 001, impellers 002 fitted at both ends of the main shaft 001, a bearing or a bush fitted on a shaft section between both ends of the main shaft 001, and the like.

The top of the hanging beam 1 is provided with a hanging ring or a hanging hook which is used for being conveniently connected with hoisting devices such as a crane and a trussed girder, the two ends of the hanging beam 1 are provided with main suspension arms 2 in a sliding mode, the distance between the main suspension arms 2 at the two ends is adjusted through sliding the main suspension arms 2, and therefore the hanging beam is suitable for hoisting rotors with different lengths. One end of the main suspension arm 2 close to the rotor is provided with a fixed frame 3, an inner expansion clamp 4 is arranged on the fixed frame 3 corresponding to a center hole of the impeller 002, an end clamp 5 is arranged corresponding to the outer contour of the end face of the impeller 002, and an auxiliary stabilizing air bag 6 is arranged corresponding to a gap between blades of the impeller 002.

The principle of fixing and hoisting the rotor is as follows:

the inner expansion clamp 4 extends into the center hole of the impeller, and then the clamping end of the inner expansion clamp 4 expands the inner wall of the center hole of the impeller 002 tightly, so that the center hole of the impeller 002 is expanded and fixed; sliding the end clamps 5 on the upper side and the lower side of the fixed frame 3 to enable the clamping ends of the end clamps 5 on the upper side and the lower side to be respectively attached to the upper side and the lower side of the end face outer contour of the impeller 002 and clamp the upper side and the lower side of the end face outer contour of the impeller 002, so that the end face outer contour of the impeller 002 is fixed; the auxiliary stabilizing air bag 6 in the dry-flat state extends into the gaps between the blades of the impeller 002, then the auxiliary stabilizing air bag 6 is inflated through the inflating bag 7 until the auxiliary stabilizing air bag 6 expands to fill the gaps between the blades, and then the blades are flexibly supported and fixed through the auxiliary stabilizing air bag 6.

After the impellers 002 at the two ends of the main shaft 001 are respectively fixed with a center hole, an end face outline and a blade gap through the internal expansion clamp 4, the end part clamp 5 and the auxiliary stabilizing air bag 6 at the two ends of the hanging beam 1, the hanging beam 1 can be lifted through an external lifting device, and stable and safe transportation of a rotor is realized.

Example 2:

the embodiment is further optimized on the basis of embodiment 1, as shown in fig. 3 and 11, the upper side and the lower side of the fixing frame 3 are symmetrically provided with adjusting sliding grooves 01, the end part clamp 5 comprises an adjusting screw rod 51 rotatably arranged inside the adjusting sliding groove 01, an adjusting slide block 52 is sleeved on the adjusting screw rod 51 in a threaded manner, the adjusting slide block 52 is slidably connected with the adjusting sliding groove 01, and an arc-shaped chuck 53 is arranged at one end, close to the rotor, of the adjusting slide block 52.

The upper and lower both sides of mount 3 are provided with regulation spout 01 along the direction symmetry of directional impeller 002's terminal surface outline, when needing the terminal surface outline of fixed impeller 002, through rotating adjusting screw 51, adjusting screw 51 through with the threaded connection cooperation between the screw hole on the adjusting slide 52, and then drive adjusting slide 52 along adjusting spout 01 linear sliding, and then make the arc chuck 53 of upper and lower both sides close to each other, until the arc chuck 53 of upper and lower both sides respectively with the upper and lower both sides centre gripping of impeller 002 terminal surface outline, and then realize the firm fixed of impeller 002 terminal surface outline.

One side that arc chuck 53 is close to the rotor is provided with flexible blotter, and flexible blotter obtains through the preparation of flexible materials such as rubber or foam, through setting up flexible blotter, can effectively avoid arc chuck 53 and impeller 002's terminal surface outline rigid contact, and then effectively avoid impeller 002's terminal surface outline impaired.

Other parts of this embodiment are the same as embodiment 1, and thus are not described again.

Example 3:

the embodiment is further optimized on the basis of the above embodiment 1 or 2, as shown in fig. 4 and 5, the internal expansion fixture 4 includes a fixed cylinder 41 fixedly disposed at the center of the fixed frame 3, an internal expansion screw 42 is installed on the internal thread of the fixed cylinder 41, an installation disc 43 is disposed at one end of the internal expansion screw 42 close to the rotor, an internal expansion block 44 having a plurality of sliding directions perpendicular to the axial direction of the rotor is disposed on the installation disc 43 along the circumferential sliding direction, a first inclined surface is disposed at one end of the internal expansion block 44 close to the fixed cylinder 41, and a second inclined surface matched with and extruded with the first inclined surface is disposed at one end of the fixed cylinder 41 close to the internal expansion block 44.

The center of the fixing frame 3 is provided with a mounting hole for the fixing cylinder 41 to pass through, the fixing cylinder 41 is coaxially mounted in the mounting hole, and one end of the fixing cylinder 41 far away from the rotor is fixedly connected with one side end face of the fixing frame 3 far away from the rotor through a connecting flange. The inside of the fixed cylinder 41 is provided with an internal thread, and the internal expansion screw 42 is threadedly mounted inside the fixed cylinder 41 by being threadedly engaged with the internal thread. By rotating the internal expansion screw 42, the internal expansion screw 42 and the fixed cylinder 41 are driven to move axially relative to each other.

One end of the internal expansion screw 42 close to the rotor is provided with a mounting disc 43, and a plurality of internal expansion blocks 44 sliding towards the inside of the central hole of the impeller 002 are arranged on the mounting disc 43 along the circumferential direction. Usually, the outer circle diameter of the inner expansion block 44 is smaller than the diameter of the center hole of the impeller 002, so that the inner expansion block 44 can smoothly extend into the center hole. When the centre bore needs to be expanded tightly, the interior screw rod 42 that expands rotates for interior screw rod 42 that expands is close to the solid fixed cylinder 41 along the axial and removes, and then drive interior bloated piece 44 on the mounting disc 43 and move towards the direction that is close to solid fixed cylinder 41, until the first inclined plane of interior bloated piece 44 tip and the second inclined plane of solid fixed cylinder 41 tip contact each other and extrude each other, receive extruded interior bloated piece 44 and slide towards the direction that is close to the inner wall of centre bore under the effect of radial force this moment, until the outer disc of interior bloated piece 44 expands the inner wall of centre bore tightly, and then realize the firm fixed to the centre bore of impeller 002. When needing to cancel the bloated tight of centering hole, only need screw rod 42 that expands in the reverse rotation, and then make interior screw rod 42 that expands move towards the direction of keeping away from solid fixed cylinder 41, and then make interior bloated piece 44 and solid fixed cylinder 41 keep away from each other, the first inclined plane of bloated piece 44 tip separates with the second inclined plane of solid fixed cylinder 41 tip in this moment, first inclined plane no longer receives the extrusion on second inclined plane, interior bloated piece 44 no longer receives the effect of radial force this moment, the inner wall of the tight centre bore of no longer expanding promptly.

Furthermore, the tight face that expands that interior bloated piece 44 is close to centre bore inner wall one side is provided with anti-skidding decorative pattern on, can increase the tight face that expands of interior bloated piece 44 and the frictional force between the centre bore inner wall through setting up anti-skidding decorative pattern for interior bloated piece 44 is more firm to the interior bloating in centre bore.

The rest of this embodiment is the same as embodiment 1 or 2, and therefore, the description thereof is omitted.

Example 4:

the present embodiment is further optimized on the basis of any one of the above embodiments 1 to 3, as shown in fig. 4 and 5, at least two open T-shaped grooves perpendicular to the axial direction of the rotor are uniformly arranged on the mounting disc 43 along the circumferential direction, an inner expansion block 44 is slidably mounted inside an open end of each open T-shaped groove, and a return spring 45 is arranged between a closed end of each open T-shaped groove and the inner expansion block 44.

The end of the opening T-shaped groove close to the center of the mounting disc 43 is a big end closed end, the end of the opening T-shaped groove close to the edge of the mounting disc 43 is a small end open end, and the small end open end of the opening T-shaped groove is communicated with the edge of the mounting disc 43. The inner expanding block 44 is arranged into a T-shaped sliding block corresponding to the inner contour of the opening T-shaped groove, and the big end of the T-shaped sliding block is connected with the big end closed end of the opening T-shaped groove through a return spring 45.

When the second inclined surface of the inner expansion block 44 is radially pressed by the first section of the fixed cylinder 41, the return spring 45 is stretched, and the inner expansion block 44 expands the inner wall of the central hole under the action of the radial force. When the first inclined plane of the fixed cylinder 41 does not extrude the second inclined plane on the inner expansion block 44 any more, the inner expansion block 44 does not bear radial force any more at this time, and the return spring 45 retracts and drives the inner expansion block 44 to retract and slide to the inside of the opening T-shaped groove towards the direction far away from the inner wall of the central hole, so that the inner wall of the central hole is loosened.

Other parts of this embodiment are the same as any of embodiments 1 to 3, and thus are not described again.

Example 5:

this embodiment is further optimized on the basis of any one of the above embodiments 1 to 4, as shown in fig. 10, at least two air inflation channels are uniformly arranged in the fixing frame 3 along the circumferential direction, an inflation tube is arranged in each air inflation channel, one end of the inflation tube close to the rotor is connected with an air port of the auxiliary stabilizing air bag 6, and one end of the inflation tube far away from the rotor is connected with an inflation port of the inflation bag 7.

The end of the auxiliary stabilizing air bag 6 close to the fixing frame 3 is provided with a quick connection air nozzle, and the end of the inflatable air bag 7 close to the fixing frame 3 is provided with a quick connection air nozzle. The two ends of the inflation tube are respectively communicated with the two side faces of the fixing frame 3, the two ends of the inflation tube are provided with quick connectors connected with the quick connection air nozzles, the auxiliary stabilizing air bag 6, the inflation tube and the inflation bag 7 are conveniently connected through the quick connectors and the quick connection air nozzles, and the auxiliary stabilizing air bag 6 can be inflated by inflating gas into the auxiliary stabilizing air bag 6 through the inflation tube to enable the auxiliary stabilizing air bag 6 to expand through pressing the inflation bag 7.

Furthermore, be provided with discharge valve on the gas tube, when need not fix the blade clearance of impeller 002, open the discharge valve on the gas tube, then can discharge the inside gas of supplementary stable gasbag 6 for supplementary stable gasbag 6 shriveling shrink no longer is full of the blade clearance.

Other parts of this embodiment are the same as any of embodiments 1 to 4, and thus are not described again.

Example 6:

the present embodiment is further optimized based on any one of the above embodiments 1 to 5, as shown in fig. 1, fig. 2, fig. 6, and fig. 7, an auxiliary boom 8 is further slidably disposed between two ends of the hanging beam 1 along the length direction of the hanging beam 1, a U-shaped clamp 9 with an open bottom is disposed at one end of the auxiliary boom 8 away from the hanging beam 1, and a flexible hanging strip 10 is disposed at the open bottom of the U-shaped clamp 9.

The open end of U type card 9 extends to the top of main shaft 001 in the rotor, is provided with flexible suspender 10 between the open end of U type card 9, and flexible suspender 10 is used for bearing the weight of and lifts by crane the bearing on the main shaft 001, and then realizes the supplementary hoist and mount to the rotor, further guarantees steadiness and the security of rotor hoist and mount in-process.

Other parts of this embodiment are the same as any of embodiments 1 to 5, and thus are not described again.

Example 7:

the present embodiment is further optimized based on any one of the above embodiments 1-6, as shown in fig. 6, fig. 7, fig. 8, and fig. 9, the two opposite side surfaces of the suspension beam 1 are symmetrically provided with mounting chutes for the main suspension arm 2 and the auxiliary suspension arm 8 to slide, one ends of the main suspension arm 2 and the auxiliary suspension arm 8 near the suspension beam 1 are provided with U-shaped frames 11, and the open ends of the U-shaped frames 11 are provided with sliding columns 12 extending into the mounting chutes and sliding along the mounting chutes.

The U-shaped frame 11 is installed on the top of the hanging beam 1 in a straddling manner, two side plates of the U-shaped frame 11 are respectively provided with a sliding column 12 extending into the installation sliding groove, and the sliding columns 12 slide along the installation sliding groove, so that the installation position of the main hanging arm 2 or the auxiliary hanging arm 8 on the hanging beam 1 is adjusted.

Furthermore, rolling wheels are rotatably arranged between the two side plates of the U-shaped frame 11 and are in rolling contact with the top end face of the hanging beam 1, so that the friction force between the U-shaped frame 11 and the hanging beam 1 when the U-shaped frame slides is reduced.

Other parts of this embodiment are the same as any of embodiments 1 to 6, and thus are not described again.

Example 8:

the present embodiment is further optimized on the basis of any one of the above embodiments 1 to 7, as shown in fig. 6 to 9, a locking sleeve 13 is further slidably disposed on one side of the mounting chute located at the sliding column 12, a pressing screw 14 extending into the mounting chute is threadedly mounted on the locking sleeve 13, and a pressing block 15 is disposed at one end of the pressing screw 14 located in the mounting chute.

When the main suspension arm 2 or the auxiliary suspension arm 8 needs to slide, the pressing screw 14 is rotated to drive the pressing block 15 to be far away from the inner end face of the installation chute, and at the moment, the main suspension arm 2 or the auxiliary suspension arm 8 can be smoothly slid; when the main boom 2 or the auxiliary boom 8 needs to be fixed, the compression screw 14 is rotated to drive the compression block 15 to tightly push the inner end surface of the installation chute, so that the sliding main boom 2 or the auxiliary boom 8 is fixed.

Further, be provided with the via hole on the locking sleeve 13, it is provided with the internal thread sleeve to correspond the via hole coaxial on the side of installation spout is kept away from to locking sleeve 13, and compression screw 14 is installed to the screw thread in the internal thread sleeve.

Other parts of this embodiment are the same as any of embodiments 1 to 7, and thus are not described again.

The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.

Claims (10)

1. The utility model provides a turbo expander rotor structure auxiliary lifting device, includes hanging beam (1), its characterized in that, the both ends of hanging beam (1) slide along the length direction of hanging beam (1) respectively and are provided with main davit (2), the one end that hanging beam (1) was kept away from in main davit (2) is provided with mount (3), center department that mount (3) are close to rotor one side is provided with interior bloated anchor clamps (4), the upper and lower bilateral symmetry of mount (3) slides and is provided with tip anchor clamps (5), be provided with a plurality of along circumference on one side that mount (3) are close to the rotor and assist and stabilize gasbag (6) and be connected inflatable bag (7) are provided with on one side of keeping away from the rotor of mount (3).

2. The auxiliary lifting appliance of the rotor structure of the turboexpander according to claim 1, wherein the upper side and the lower side of the fixing frame (3) are symmetrically provided with adjusting sliding grooves (01), the end clamp (5) comprises an adjusting screw rod (51) rotatably arranged in the adjusting sliding grooves (01), an adjusting sliding block (52) is sleeved on the adjusting screw rod (51) in a threaded manner, the adjusting sliding block (52) is slidably connected with the adjusting sliding grooves (01), and one end, close to the rotor, of the adjusting sliding block (52) is provided with an arc-shaped chuck (53).

3. A turbo-expander rotor structure auxiliary hoist according to claim 2, characterized in that the side of the arc-shaped clamp (53) close to the rotor is provided with a flexible buffer.

4. The auxiliary lifting appliance of the rotor structure of the turboexpander according to claim 1, wherein the internal expansion fixture (4) comprises a fixed cylinder (41) fixedly arranged at the center of the fixed frame (3), an internal expansion screw (42) is installed in the fixed cylinder (41) through internal threads, a mounting disc (43) is arranged at one end, close to the rotor, of the internal expansion screw (42), a plurality of internal expansion blocks (44) with sliding directions perpendicular to the axial direction of the rotor are arranged on the mounting disc (43) in a circumferential sliding mode, a first inclined surface is arranged at one end, close to the fixed cylinder (41), of each internal expansion block (44), and a second inclined surface which is matched and extruded with the first inclined surface is arranged at one end, close to the internal expansion blocks (44), of the fixed cylinder (41).

5. The auxiliary lifting appliance of the rotor structure of the turboexpander according to claim 4, wherein the mounting disc (43) is uniformly provided with at least two open T-shaped grooves perpendicular to the axial direction of the rotor along the circumferential direction, the open ends of the open T-shaped grooves are internally and slidably provided with inner expansion blocks (44), and a return spring (45) is arranged between the closed ends of the open T-shaped grooves and the inner expansion blocks (44).

6. The auxiliary lifting appliance for the rotor structure of the turboexpander according to claim 1, wherein at least two air inflation channels are uniformly arranged in the fixing frame (3) along the circumferential direction, an air inflation tube is arranged in each air inflation channel, one end, close to the rotor, of each air inflation tube is connected with an air port of an auxiliary stabilizing air bag (6), and one end, far away from the rotor, of each air inflation tube is connected with an air inflation port of an air inflation bag (7).

7. The auxiliary lifting appliance for the rotor structure of the turboexpander according to claim 6, wherein the gas-filled tube is provided with a gas exhaust valve.

8. The auxiliary lifting appliance of the rotor structure of the turboexpander is characterized in that an auxiliary lifting arm (8) is arranged between two ends of the lifting beam (1) in a sliding mode along the length direction of the lifting beam (1), one end, far away from the lifting beam (1), of the auxiliary lifting arm (8) is provided with a U-shaped clamp (9) with an opening at the bottom, and a flexible hanging strip (10) is arranged at the opening at the bottom of the U-shaped clamp (9).

9. The auxiliary lifting appliance of the rotor structure of the turboexpander is characterized in that two opposite side surfaces of the lifting beam (1) are symmetrically provided with mounting sliding grooves for the sliding mounting of the main lifting arm (2) and the auxiliary lifting arm (8) along the length direction, one ends of the main lifting arm (2) and the auxiliary lifting arm (8) close to the lifting beam (1) are provided with U-shaped frames (11), and the open ends of the U-shaped frames (11) are provided with sliding columns (12) which extend into the mounting sliding grooves and slide along the mounting sliding grooves.

10. The auxiliary lifting appliance for the rotor structure of the turboexpander according to claim 9, wherein a locking sleeve (13) is further slidably disposed on one side of the sliding column (12) in the mounting chute, a compression screw (14) extending into the mounting chute is threadedly mounted on the locking sleeve (13), and a compression block (15) is disposed on one end of the compression screw (14) located inside the mounting chute.

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