CN212769642U

CN212769642U - Device is changed to vertical rolling mill cardan shaft

Info

Publication number: CN212769642U
Application number: CN202021357877.3U
Authority: CN
Inventors: 常建宙; 董磊; 林武
Original assignee: Zenith Steel Group Co Ltd; Changzhou Zenith Special Steel Co Ltd
Current assignee: Zenith Steel Group Co Ltd; Changzhou Zenith Special Steel Co Ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2021-03-23
Anticipated expiration: 2030-07-10

Abstract

The utility model provides a universal shaft replacement device for a vertical rolling mill. When the universal shaft needs to be disassembled, the utility model is firstly installed on the frame trolley, the frame trolley is moved to the lower part of the universal shaft, the lifting device is activated, the platform is raised, and the platform is rotated, so that the bearing strut and the universal shaft socket are connected. Clamping, the platform continues to rise, so that all the gravity of the universal shaft acts on the platform, then remove the parts connected with the universal shaft, and the universal shaft is easily transported; when the universal shaft needs to be installed, first install the universal shaft on the platform. On the bearing column, and then transported to the installation position, start the lifting device, make the platform rise, and rotate the platform to install the universal shaft in place; the whole disassembly process is simple and safe, and only one person can complete the operation, improving the efficiency.

Description

Device is changed to vertical rolling mill cardan shaft

Technical Field

The utility model relates to a steel production facility technical field specifically is a device is changed to vertical rolling mill cardan shaft.

Background

And (3) rolling the bar, wherein the rolling mill is driven by a universal shaft, and the universal shaft needs to be replaced when damaged. Wherein, the traditional replacement mode that vertical rolling mill cardan shaft adopted is: disassembly requires the following steps: 1. inserting the steel wire ropes above the header and symmetrically placing the steel wire ropes; 2. respectively hanging two hoisting hoists at two ends of a steel wire rope, and hooking hooks on hooks of a universal shaft; 3. tightening the two hoisting hoists, removing the retainer pressing plate bolts to separate the hoisting hoists from the universal shaft, and removing the sliding blocks; 4. removing the bolts on the dust removing cover plate at the header end, and taking down the dust removing cover plate; 5. moving the rack changing trolley to the position below the universal shaft, simultaneously loosening the hoisting hoists on two sides by two persons, and placing the universal shaft on the rack changing trolley; 6. and moving the rack replacing trolley to convey and lift the universal shaft away. The installation requires the following steps: 1. welding hooks on two sides of the universal shaft, and transferring the universal shaft to a rack changing trolley; 2. hoisting the universal shaft to a mounting position by using a travelling crane, hooking hooks on two sides of the universal shaft by using a hand-pulled hoisting block, tensioning the hoisting block, and controlling the travelling crane to descend; 3. removing the steel wire rope for hoisting the universal shaft and the travelling crane, and simultaneously lifting the hoisting block at two sides to hoist the universal shaft; 4. slightly rotating the coupler, lifting the hoisting block after the crown gear is aligned with the outer gear of the universal shaft, and inserting the universal shaft into the crown gear; 5. and adjusting the hoisting block and the lifting cylinder to enable the plane bearing and the retainer to be positioned on the same horizontal line, installing the sliding block, and screwing the retainer bolt. The whole replacement process is complicated, the stability of the universal shaft is poor, great potential safety hazards exist, the direction is not easy to adjust when the spline of the universal shaft is installed, the working difficulty is greatly increased, at least 4-5 persons are needed in the replacement process, and manpower is wasted.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the technical problems that the universal shaft of a traditional vertical rolling mill is complex to replace, poor in safety and low in efficiency are solved.

The utility model provides a device is changed to vertical rolling mill cardan shaft, including elevating gear, the elevating gear upper end is equipped with the platform of free rotation, the platform upper end is equipped with bears the pillar.

When the universal shaft needs to be disassembled, the utility model is firstly installed on a frame trolley, the frame trolley moves to the position below the universal shaft, a lifting device is started to lift a platform, the platform is rotated to clamp a bearing pillar with a universal shaft jack, the platform continuously rises to enable the gravity of the universal shaft to be completely acted on the platform, then a part connected with the universal shaft is dismantled, and the universal shaft is easily transported away; when the universal shaft needs to be installed, the universal shaft is firstly installed on the bearing support, then the universal shaft is transported to an installation position, the lifting device is started to enable the platform to ascend, and the platform is rotated to enable the universal shaft to be installed in place; the whole dismounting process is simple to operate and high in safety, and the operation can be completed by only one person, so that the efficiency is improved.

Furthermore, the platform lower extreme is equipped with the joint hole, the elevating gear upper end is equipped with to insert locate in the joint hole and clearance fit's joint post. The platform rotation is realized through the cooperation connection of joint hole and joint post, simple structure, convenient operation.

Furthermore, the lower end of the platform is provided with a plurality of uniformly distributed universal wheels, and the peripheral wall of the platform is provided with a plurality of uniformly distributed push rods. The universal wheels are arranged, so that the platform can rotate more smoothly and stably, and the push rod is convenient for manual operation.

Furthermore, a groove is formed in the upper end of the lifting device, and the universal wheels are located in the groove. The arrangement of the groove can save space, protect the universal wheel and avoid the universal wheel from being damaged.

Furthermore, the lifting device comprises a base, a lifting platform, an oil cylinder, a first supporting rod and a second supporting rod, wherein the first supporting rod is hinged with the middle position of the second supporting rod to form an X shape, the upper end of the first supporting rod is hinged with one end of the lifting platform, and the lower end of the first supporting rod is movably hinged with one end of the base; the upper end of the second supporting rod is movably hinged with the other end of the lifting platform, and the lower end of the second supporting rod is hinged with the other end of the base; the cylinder body of the oil cylinder is hinged with the first supporting rod, and the piston rod of the oil cylinder is hinged with the second supporting rod; the groove and the clamping column are arranged at the upper end of the lifting platform. The lifting platform is lifted by starting the oil cylinder, and the structure is simple.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a front view of the present invention;

FIG. 2 is a front view of the elevator apparatus;

FIG. 3 is a front view of the platform;

FIG. 4 is a right side view of the platform

In the figure: 1. a lifting device; 2. a platform; 3. a load bearing strut; 4. a universal wheel; 11. a base; 12. a lifting platform; 13. an oil cylinder; 14. a first support bar; 15. a second support bar; 16. a clamping column; 17. a groove; 21. a clamping hole; 22. a push rod.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1, the utility model relates to a universal shaft replacing device for a vertical rolling mill, which comprises a lifting device 1, wherein the upper end of the lifting device 1 is provided with a freely rotating platform 2, and the upper end of the platform 2 is provided with a bearing support 3;

as shown in fig. 2, the lifting device 1 includes a base 11, a lifting platform 12, an oil cylinder 13, a first support rod 14 and a second support rod 15, the first support rod 14 is hinged with the middle position of the second support rod 15 and forms an X shape, the upper end of the first support rod 14 is hinged with one end of the lifting platform 12, and the lower end is movably hinged with one end of the base 11; the upper end of the second supporting rod 15 is movably hinged with the other end of the lifting platform 12, and the lower end is hinged with the other end of the base 11; the cylinder body of the oil cylinder 13 is hinged with the first supporting rod 14, and the piston rod of the oil cylinder 13 is hinged with the second supporting rod 15; a groove 17 is arranged at the upper end of the lifting platform 12, and a clamping column 16 is arranged in the groove 17;

as shown in fig. 3 and 4, the lower end of the platform 2 is provided with a clamping hole 21 for sleeving the clamping column 16, and the clamping column 16 is in clearance fit with the clamping hole 21 to realize the rotary connection of the platform 2; the lower end of the platform 2 is provided with a plurality of uniformly distributed universal wheels 4, so that the platform 2 can rotate more smoothly and stably, and the universal wheels 4 are positioned in the grooves 17 and can be prevented from being damaged; four push rods 22 are uniformly distributed on the peripheral wall of the platform 2, so that the operation of hands is facilitated;

when the universal shaft needs to be disassembled, the utility model is firstly installed on a frame trolley, the frame trolley moves to the position below the universal shaft, the lifting device 1 is started to lift the platform 2, the platform 2 is rotated to clamp the bearing support 3 with the universal shaft jack, the platform 2 continuously rises to enable the gravity of the universal shaft to be completely acted on the platform 2, then the part connected with the universal shaft is dismantled, and the universal shaft is easily transported away; when the universal shaft needs to be installed, the universal shaft is firstly installed on the bearing support 3 and then is transported to an installation position, the lifting device 1 is started to enable the platform 2 to ascend, and the platform 2 is rotated to enable the universal shaft to be installed in place; the whole dismounting process is simple to operate and high in safety, and the operation can be completed by only one person, so that the efficiency is improved.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A universal shaft replacement device for a vertical rolling mill, characterized in that it comprises a lifting device (1), the upper end of the lifting device (1) is provided with a freely rotating platform (2), and the upper end of the platform (2) is provided with a free rotating platform (2). There are load-bearing struts (3).

2. A vertical rolling mill universal shaft replacement device according to claim 1, characterized in that: the lower end of the platform (2) is provided with a clamping hole (21), and the upper end of the lifting device (1) is provided with a clamping hole (21). A clamping post (16) which is inserted into the clamping hole (21) and fits in a clearance fit.

3. A device for replacing universal joint shafts of a vertical rolling mill according to claim 2, characterized in that: the lower end of the platform (2) is provided with a plurality of uniformly distributed universal wheels (4), and the platform (2) ) peripheral wall is provided with a plurality of evenly distributed push rods (22).

4. A vertical rolling mill universal shaft replacement device according to claim 3, wherein a groove (17) is provided at the upper end of the lifting device (1), and the universal wheel (4) is located at the upper end of the lifting device (1). into the groove (17).

5 . The universal shaft replacement device for a vertical rolling mill according to claim 4 , wherein the lifting device ( 1 ) comprises a base ( 11 ), a lifting table ( 12 ), an oil cylinder ( 13 ), a first A support rod (14) and a second support rod (15), the first support rod (14) and the second support rod (15) are hinged at the middle position and form an X shape, the first support rod (14) The upper end is hinged with one end of the lifting platform (12), and the lower end is movable hinged with one end of the base (11); the upper end of the second support rod (15) is movable hinged with the other end of the lifting platform (12), and the lower end It is hinged with the other end of the base (11); the cylinder body of the oil cylinder (13) is hinged with the first support rod (14), and the piston rod of the oil cylinder (13) is hinged with the second support rod (15). ; The groove (17) and the clamping column (16) are arranged on the upper end of the lifting platform (12).