CN116281728A

CN116281728A - Jacking tool special for crane slewing bearing installation and application method thereof

Info

Publication number: CN116281728A
Application number: CN202211090547.6A
Authority: CN
Inventors: 史海兵; 刘广稳; 苗发荣; 周志力; 代亮玺; 郭跃; 许腾; 王杰杰; 胡尊贺; 孟凡星
Original assignee: Qingdao Port Equipment Manufacturing Co ltd
Current assignee: Qingdao Port Equipment Manufacturing Co ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-06-23

Abstract

The invention relates to a jacking tool special for installing a slewing bearing of a crane and a use method thereof, and belongs to the technical field of tool clamps. The lifting tool is used for installing the gear ring, so that manpower and material resources are greatly saved, the cost is reduced, and the potential safety hazard is reduced. The using method of the jacking tool comprises the following steps: assembling a jacking tool, adjusting an arc-shaped flange, placing sizing blocks, hoisting a turntable, pushing the jacking tool to move below the turntable, rotating a tire, adjusting the position of a gear ring, adjusting the position of the gear ring to coincide with a connecting hole on the turntable flange, finally, detaching a connecting bolt, lifting the gear ring by a jack, stopping when the jack is lifted to be in contact with the bottom surface of the turntable flange, and lowering the jacking tool and withdrawing.

Description

Jacking tool special for crane slewing bearing installation and application method thereof

Technical Field

The invention relates to a jacking tool special for installation of a slewing bearing of a crane and a use method thereof, and belongs to the technical field of tool clamps.

Background

In the operation process of the portal loading and unloading machinery portal crane, the portal crane can freely rotate by 360 degrees after grabbing goods, the portal crane is supported by an external tooth rolling bearing (also called a gear ring) between a cylinder and a rotary table, the gear ring of the cylinder faces upwards, and when the portal loading and unloading machinery portal crane is installed, the rotary table and the gear ring below are directly lifted by a large-tonnage crane, so that the portal loading and unloading machinery portal crane is installed, but the installation surface of the gear ring of the rotary table faces downwards, and the installation is difficult. In the prior art, the process of installing the gear ring of the turntable of the door machine is generally that firstly, the gear ring is hoisted to a special pallet for installing the gear ring through a crane, then, the pallet is hoisted to a position below the turntable, then, the pallet is hoisted to a lower plane of the turntable through the cooperation of two forklifts, and the pallet is fastened through fastening bolts. And not lifting every time, the gear ring bolt hole and the turntable flange bolt hole can be aligned, and multiple lifting and falling adjustment are needed, so that the operation time is prolonged, the installation time is less for half a day, and more for one day, so that the production efficiency is low. The use of two forklifts for one crane also results in increased production costs.

The conventional installation method of the slewing bearing has the following defects:

1. the crane needs 1, and cooperation operation of 2 forklifts, in the operation process, operating personnel need with 2 forklifts cooperation operation, need special commander's hand to command, operating personnel installs the operation, in whole installation, can not realize the separation of man-machine, has serious potential safety hazard.

2. In the installation process, a plurality of mechanical vehicles are required to be mutually matched, the process flow is longer, the time difference exists in the engagement between each process, the installation auxiliary time is increased, in the process of lifting by matching two forklifts, sometimes, due to the fact that gear ring bolt holes are not coincident with turntable flange bolt holes, the installation is required to be lifted again by re-falling adjustment, the installation time is too long, and the production efficiency cannot be improved.

3. In the whole installation process, 1 person of a crane driver, 2 persons of a forklift driver, 1 person of a command hand and 3 persons of an installer are required, and the gear ring can be installed by 7 persons in total, so that the use cost of 3 mechanical vehicles and the labor cost of 7 persons are increased, and the production cost is increased.

In summary, according to the current installation process flow, the installation process requires the cooperation operation of multiple persons and multiple machine types, and the potential safety hazard is large. The number of personnel and the number of mechanical uses are relatively large, so that the production cost is high, the efficiency in the installation process is difficult to improve, and the production efficiency is low.

Disclosure of Invention

The invention aims to solve the problems and provides a special jacking tool for installing a slewing bearing of a crane and a using method thereof.

The invention is realized by the following technical scheme:

the lifting tool special for the installation of the slewing bearing of the crane comprises two wheels connected together through a second rotating shaft, a bottom plate is arranged on the second rotating shaft, adjusting nuts are respectively arranged at the front end and the rear end of the bottom plate, a supporting sleeve is arranged on the bottom plate, a lifting mechanism is arranged in the supporting sleeve, the first rotating shaft is arranged above the lifting mechanism, and an arc-shaped flange is fixedly arranged at the upper end of the first rotating shaft.

By using the jacking tool disclosed by the invention, the investment of personnel is reduced from 7 to 3, the labor cost is reduced by 60%, the installation time of each turntable is reduced from the minimum half-day time to less than 2 hours, and the efficiency is improved by more than 1 time. Meanwhile, the using stations of 1 crane and 2 forklifts are reduced, and the cost of equipment is reduced. In the aspect of safety, the door machine gear ring jacking tool is used, so that the mode of carrying and jacking of a forklift is avoided, the separation of operators and mechanical vehicles is thoroughly realized, potential safety hazards are reduced, and the occurrence probability of accidents is reduced. Each trolley can save the comprehensive production cost by more than 5 kiloyuan.

The invention further improves that a condom is arranged outside the upper part of the supporting sleeve, a second bolt is arranged on the side wall of the condom, and the condom plays a role in protecting the first rotating shaft.

According to the invention, the second rotating shaft is provided with the groove, and the bottom plate is clamped in the groove, so that the bottom plate can be conveniently and accurately installed.

The invention further improves that a shaft sleeve and a bearing are sleeved between the two ends of the rotating shaft and the wheel, the two end faces of the rotating shaft are provided with end cover baffles and end covers, the end cover baffles and the end covers are arranged on the two ends of the rotating shaft through bolts I, and the end covers are connected with the wheel through countersunk screws.

The invention further improves that the lifting mechanism is a jack.

The invention also provides a use method of the special jacking tool for installing the slewing bearing of the crane, which comprises the following steps:

s1: three groups of jacking tools are assembled, two adjusting bolts are adjusted in a rotating mode, so that the jacking tools are in a horizontal state and kept stable, the direction of the arc-shaped flange is adjusted, and the maximum arc of the arc-shaped flange and the outer circle of the gear ring are in the same direction;

s2: a plurality of sizing blocks are used for supporting the lower part of the turntable, the turntable is hoisted to the upper part of the sizing blocks, the height of the sizing blocks is adjusted, the turntable flange has a height of 1.4 meters from the ground after the turntable is hoisted to the upper part of the sizing blocks, and a gap of 50mm is reserved when the jacking tool drives the gear ring to push the lower part of the turntable flange;

s3: lifting the gear ring onto the upper end surfaces of the arc flanges of the three groups of jacking tools, fixing the gear ring by using bolts through bolt holes on the gear ring and the arc flanges, pushing the jacking tools to move below the turntable, rotating tires of the jacking tools, driving the gear ring to rotate by adjusting positions, and enabling bolt connecting holes on the adjusting gear ring to coincide with the positions of connecting holes on the turntable flanges;

s4: after adjustment is completed, the bolt connected with the lifting tool and the gear ring is disassembled, the hydraulic station is started to lift the hydraulic jack, the gear ring is driven to lift, the lifting is stopped when the lifting is contacted with the bottom surface of the turntable flange, the turntable flange and the gear ring are connected by penetrating the locking bolt, the locking bolt is locked, the lifting tool is lowered, and the lifting tool is withdrawn.

The gear ring is mounted on the trolley flange by the using method, the operation is convenient and quick, the manpower, material resources and financial resources are saved, the potential safety hazard is reduced, and the occurrence probability of accidents is reduced.

In the step S1, three groups of jacking tools are arranged with the pitch circle of the gear ring mounting bolt hole as a diameter trisection.

In the step S1, when the arc-shaped flange is lifted and the direction of the arc-shaped flange is adjusted, the second bolt is in a loosening state, and after the height and the direction of the arc-shaped flange are adjusted in place, the first rotating shaft is locked by the second bolt.

Compared with the prior art, the invention has the following beneficial effects:

1. by using the jacking tool disclosed by the invention, the investment of personnel is reduced from 7 to 3, the labor cost is reduced by 60%, the installation time of each turntable is reduced from the minimum half-day time to less than 2 hours, and the efficiency is improved by more than 1 time. Meanwhile, the using stations of 1 crane and 2 forklifts are reduced, and the cost of equipment is reduced. In the aspect of safety, the door machine gear ring jacking tool is used, so that the mode of carrying and jacking of a forklift is avoided, the separation of operators and mechanical vehicles is thoroughly realized, potential safety hazards are reduced, and the occurrence probability of accidents is reduced. Each trolley can save the comprehensive production cost by more than 5 kiloyuan.

2. The gear ring is mounted on the trolley flange by the using method, the operation is convenient and quick, the manpower, material resources and financial resources are saved, the potential safety hazard is reduced, and the occurrence probability of accidents is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic front view of a jacking tool according to an embodiment of the present invention.

Fig. 2 is a schematic top view of a jacking tool according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a use state of a jacking tool according to an embodiment of the present invention.

In the figure: 1. an arc-shaped flange; 2. a first rotating shaft; 3. a support sleeve; 4. a bottom plate; 5. a second rotating shaft; 6. a wheel; 7. an end cap; 8. an end cap baffle; 9. a shaft sleeve; 10. a condom; 11. an adjusting bolt; 12. a bearing; 13. countersunk head screws; 14. a first bolt; 15. a second bolt; 16. a jack; 17. a turntable; 18. ground surface; 19. sizing block; 20. a gear ring; 21. jacking tool.

Detailed Description

The following detailed description of the invention refers to the accompanying drawings.

The lifting tool special for the installation of the slewing bearing of the crane comprises two wheels 6 connected together through a second rotating shaft 5, a bottom plate 4 is installed on the second rotating shaft 5, adjusting nuts 11 are respectively installed at the front end and the rear end of the bottom plate 4, a supporting sleeve 3 is arranged on the bottom plate 4, a jack 16 is arranged in the supporting sleeve 3, a first rotating shaft 2 is arranged above the lifting mechanism, and an arc-shaped flange 1 is fixedly arranged at the upper end of the first rotating shaft 2.

Wherein, the upper part of the supporting sleeve 3 is externally provided with a condom 10, and a second bolt 15 is arranged on the side wall of the condom 10.

Wherein, be equipped with the recess on pivot two 5, bottom plate 4 card is in the recess.

The shaft sleeve 9 and the bearing 12 are sleeved between the two ends of the second rotating shaft 5 and the wheel 6, the end cover baffle 8 and the end cover 7 are arranged on the two end surfaces of the second rotating shaft 5, the end cover baffle 8 and the end cover 7 are arranged on the two ends of the second rotating shaft 5 through the first bolt 14, and the end cover 7 is connected with the wheel 6 through the countersunk screw 13.

s1: three groups of jacking tools 21 are assembled, two adjusting bolts 11 are adjusted in a rotating mode, so that the jacking tools 21 are in a horizontal state and kept stable, the direction of the arc-shaped flange 1 is adjusted, and the maximum arc of the arc-shaped flange 1 and the outer circle of the gear ring 20 are in the same direction;

s2: a plurality of sizing blocks 19 are used for supporting the lower part of the turntable 17, the turntable 17 is hoisted to the upper part of the sizing blocks 19, the height of the sizing blocks 19 is adjusted, the flange of the turntable 17 has a height of 1.4 meters from the ground 18 after the turntable 17 is hoisted to the upper part of the sizing blocks 19, and a gap of 50mm is reserved when the jacking tool 21 drives the gear ring 20 to push to the lower part of the flange of the turntable 17;

s3: lifting the gear ring 20 onto the upper end surfaces of the arc flanges 1 of the three groups of jacking tools 21, fixing the gear ring 20 by using bolts through the gear ring 20 and bolt holes on the arc flanges 1, pushing the jacking tools 21 to move below the turntable 17, rotating the tires 6 of the jacking tools 21, driving the gear ring 20 to rotate by adjusting positions, and adjusting bolt connecting holes on the gear ring 20 to coincide with the positions of connecting holes on the flanges of the turntable 17;

s4: after the adjustment is completed, the bolt connected with the jacking tool 21 and the gear ring 20 is disassembled, the hydraulic station is started to jack up the hydraulic jack 16, the gear ring 20 is driven to ascend, the lifting is stopped when the lifting contacts with the bottom surface of the flange of the turntable 17, the flange of the turntable 17 is connected with the gear ring 20 by penetrating the locking bolt, the locking bolt is locked, the jacking tool 21 is lowered, and the lifting tool is withdrawn.

In step S1, three groups of jacking tools 21 are arranged with the pitch circle of the mounting bolt hole of the gear ring 20 as a diameter trisection;

when the arc-shaped flange 1 is lifted and the direction of the arc-shaped flange 1 is adjusted, the bolt II 15 is in a loosening state, and after the height and the direction of the arc-shaped flange 1 are adjusted in place, the bolt II 15 is used for locking the rotating shaft I2.

In the present specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same and similar parts between the embodiments are only required to be referred to each other.

The terms "upper", "lower", "outside", "inside", and the like in the description and in the claims of the present invention and in the above drawings, if any, are used for distinguishing between relative relationships in position and not necessarily for giving qualitative sense. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a special jacking frock of hoist slewing bearing installation, its characterized in that, including two wheels (6) that link together through pivot two (5), mounting plate (4) on pivot two (5), install one adjusting nut (11) respectively on bottom plate (4) front and back end, be equipped with on bottom plate (4) and support cover (3), be equipped with climbing mechanism in support cover (3), climbing mechanism top is equipped with pivot one (2), and pivot one (2) upper end is fixed and is equipped with arc flange (1).

2. The jacking tool special for installing the slewing bearing of the crane according to claim 1, wherein a condom (10) is arranged outside the upper part of the supporting sleeve (3), and a second bolt (15) is arranged on the side wall of the condom (10).

3. The jacking tool special for installing the slewing bearing of the crane according to claim 1, wherein the second rotating shaft (5) is provided with a groove, and the bottom plate (4) is clamped in the groove.

4. The jacking tool special for installing the slewing bearing of the crane according to claim 1, wherein a shaft sleeve (9) and a bearing (12) are sleeved between two ends of the second rotating shaft (5) and the wheel (6), end cover baffles (8) and end covers (7) are arranged on two end surfaces of the second rotating shaft (5), the end cover baffles (8) and the end covers (7) are installed on two ends of the second rotating shaft (5) through bolts I (14), and the end covers (7) are connected with the wheel (6) through countersunk screws (13).

5. The lifting tool special for crane slewing bearing installation according to claim 1, wherein the lifting mechanism is a jack (16).

6. The application method of the jacking tool special for the installation of the slewing bearing of the crane is characterized by comprising the following steps of:

s1: three groups of jacking tools (21) are assembled, two adjusting bolts (11) are adjusted through rotation, so that the jacking tools (21) are in a horizontal state and kept stable, the direction of the arc-shaped flange (1) is adjusted, and the maximum arc of the arc-shaped flange (1) and the outer circle of the gear ring (20) are in the same direction;

s2: a plurality of sizing blocks (19) are used for supporting below the turntable (17), the turntable (17) is hoisted above the sizing blocks (19), the height of the sizing blocks (19) is adjusted, after the turntable (17) is hoisted above the sizing blocks (19), the flange of the turntable (17) has a height of 1.4 meters from the ground (18), and a 50mm gap is reserved when the jacking tool (21) drives the gear ring (20) to push below the flange of the turntable (17);

s3: lifting the gear ring (20) onto the upper end surfaces of the arc flanges (1) of three groups of jacking tools (21), fixing the gear ring (20) by using bolts through bolt holes on the gear ring (20) and the arc flanges (1), pushing the jacking tools (21) to move below the turntable (17), rotating the tires (6) of the jacking tools (21), driving the gear ring (20) to rotate by adjusting positions, and adjusting bolt connecting holes on the gear ring (20) to coincide with connecting holes on the flanges of the turntable (17);

s4: after adjustment is completed, the bolt connected with the jacking tool (21) and the gear ring (20) is disassembled, the hydraulic station is started to enable the hydraulic jack (16) to jack, the gear ring (20) is driven to ascend, the hydraulic jack is stopped when the hydraulic jack ascends to contact with the bottom surface of the flange of the turntable (17), the locking bolt is penetrated to connect the flange of the turntable (17) with the gear ring (20), the locking bolt is locked, the jacking tool (21) is lowered, and the hydraulic jack is withdrawn.

7. The method for using the jacking tool special for installing the slewing bearing of the crane according to claim 6, wherein in the step S1, three groups of jacking tools (21) are arranged with the pitch circle of the installing bolt hole of the gear ring (20) as a diameter trisection.

8. The method for using the jacking tool special for installing the slewing bearing of the crane according to claim 6, wherein in the step S1, when the arc-shaped flange (1) is jacked and the direction of the arc-shaped flange (1) is adjusted, the bolt II (15) is in a loosening state, and when the height and the direction of the arc-shaped flange (1) are adjusted in place, the bolt II (15) is used for locking the rotating shaft I (2).