Spherical connection elevator

Abstract

The utility model discloses a spherical surface connection elevator which comprises a box body, a worm, a worm gear and a lead screw, an end cover is arranged on the top of the box body, the worm is arranged on one side of the box body, the end portion of the worm is connected with the output end of a motor through a coupler, the worm is connected with the worm gear in a meshed mode, and the lead screw is arranged on the worm gear. The lead screw is arranged in the box body, the upper end of the lead screw is connected with the joint connector through a thread and a key, the lower end of the lead screw is connected with the spherical nut through a thread, and a suspension device is arranged outside the spherical nut. According to the utility model, the spherical support, the spherical slide block and the spherical compression ring are arranged to form a unique spherical linkage structure, so that the degree of freedom of quick connection among the worm gear, the lead screw and the suspension device is greatly expanded, the negative influence of load eccentricity on the jack is reduced, the adaptability of the lifter is improved, and the failure rate and the maintenance cost are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lifting structure for aluminum electrolytic cell, in particular to a ball jointed lift, belongs to hoist technical field. BACKGROUND

[0002] The lifting mechanism is the key equipment on the upper structure of the aluminum electrolytic cell, and is important for the normal and stable operation of the electrolytic cell; in the process of manufacturing and installing the electrolytic cell, error is inevitable to cause the existence of deviation between the load axis of each lift of the lifting mechanism and the screw rod axis of the lift, thereby causing the eccentric load on the worm wheel, screw rod and the like of the lift, and resulting in the overload and damage of the lift.

[0003] The traditional screw hoist transmits the motion through the trapezoidal thread between the worm wheel and the screw rod, and completes the lifting operation of the heavy object by relying on the lifting of the screw rod itself. However, the traditional structure has many drawbacks in practical application; when the heavy object appears load eccentricity in the lifting process, the worm wheel and the screw rod will bear eccentric load, which is easy to cause the aggravation of component wear, greatly shorten the service life of the equipment, and also increase the failure rate of the equipment. Frequent maintenance not only consumes manpower and material resources, but also reduces the work efficiency. In addition, the lift of the traditional structure has poor adaptability when coping with complex working conditions, and is difficult to meet diversified work demands. CONTENT OF THE UTILITY MODEL

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art, provide a ball jointed lift, effectively eliminate the adverse effects of load eccentricity on the lift, reduce the failure rate, and prolong the service life of the equipment.

[0005] The technical scheme adopted by the utility model to solve the technical problem is:

[0006] A ball jointed lift, comprising a box body, a worm, a worm wheel and a screw rod, the top of the box body is provided with an end cover, one side of the box body is provided with a worm, the end of the worm is connected together with the output end of a motor through a shaft coupling, the worm is meshed and connected together with the worm wheel, the worm wheel is provided with a screw rod, and the screw rod is located in the box body, the upper end of the screw rod is connected together with a joint connector through threads and keys, the lower end of the screw rod is connected together with a spherical nut through threads, and the outside of the spherical nut is provided with a suspension device.

[0007] The upper portion of the joint connector is provided with a thrust bearing, the lower portion of the joint connector is provided with a spherical surface support, the joint connector is provided with a transmission pin, the end of the transmission pin is sleeved with a spherical surface sliding block, and the spherical surface sliding block is in contact together with the spherical surface support in the box body and the spherical surface pressure ring on the end cover.

[0008] The end cover is provided with a spherical compression ring, and the lower surface of the spherical compression ring is in contact with the spherical support on the top of the joint connector.

[0009] The spherical nut is connected with the suspension device through a pin shaft.

[0010] The worm gear and the lead screw are coaxially arranged and connected through a key.

[0011] The positive beneficial effects of the utility model are as follows:

[0012] 1. The utility model discloses a unique spherical linkage structure formed by the spherical support, the spherical sliding block and the spherical compression ring, which effectively eliminates the adverse effect of load eccentricity on the elevator, reduces the abnormal wear and damage of key components such as the worm gear and the lead screw caused by eccentric load, and greatly reduces the failure rate of the equipment.

[0013] 2. The utility model adopts the meshing transmission of the worm and the worm gear and the precise connection of the lead screw and the spherical nut, ensures the transmission accuracy and stability of the elevator, and the coaxial arrangement of the worm gear and the lead screw further improves the transmission efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a structural schematic view of the utility model;

[0015] Fig. 2 It is a structural schematic view of the utility model;

[0016] Fig. 3 It is a structural schematic view of the joint connector of the utility model;

[0017] Wherein: 1 - box, 2 - worm, 3 - worm gear, 4 - end cover, 5 - spherical compression ring, 6 - spherical support, 7 - thrust support, 9 - joint connector, 9.1 - transmission pin, 9.2 - spherical sliding block, 11 - lead screw, 12 - spherical nut, 13 - suspension device. DETAILED DESCRIPTION

[0018] The utility model will be further explained and described in combination with the drawings:

[0019] Embodiment, see Figs. 1-3The utility model provides a spherical jointed elevator, including box 1, worm 2, worm wheel 3 and screw rod 11, is provided with end cover 4 at the top of box 1, is provided with worm 2 at the side of box 1, the end of worm 2 is connected together with the output end of motor through the shaft coupling, worm 2 is engaged together with worm wheel 3, is provided with screw rod 11 on worm wheel 3, and screw rod 11 is located in box 1, and the upper end of screw rod 11 is connected together through thread and key with joint connector 9, and is connected together through thread with spherical nut 12 at the lower end of screw rod 11, and is provided with suspension device 13 outside spherical nut 12.

[0020] It is provided with thrust bearing 7 above joint connector 9, is provided with spherical support 6 below joint connector 9, is provided with transmission pin 9.1 on joint connector 9, is provided with spherical slide 9.2 on the end of transmission pin 9.1, and spherical slide 9.2 is contacted together with spherical support 6 in box 1, spherical pressure ring 5 on end cover 4.

[0021] It is provided with spherical pressure ring 5 on end cover 4, and the lower surface of spherical pressure ring 5 is contacted together with the spherical support 6 on the top of joint connector 9.

[0022] Spherical nut 12 is connected together with suspension device 13 through pin shaft.

[0023] Worm wheel 3 is coaxial with screw rod 11 and is connected together through key.

[0024] In the above description, the thrust bearing is located between the end cover and the joint connector, the outer ring is matched with the inner stop of the end cover, and the inner ring is matched with the boss of the joint connector. The main function is to bear the axial force generated by the screw rod during operation, to ensure the stability of the joint connector in the axial direction during rotation, and to prevent axial movement.

[0025] In the above description, the joint connector is a key part connecting the screw rod and other components, connected with the upper end of the screw rod through thread and key, can transmit the rotary motion and axial force of the screw rod, the transmission pin and the spherical slide on the end are contacted with the spherical support and the spherical pressure ring, and can realize a certain angle of swing during the movement of the device, making the movement more flexible.

[0026] Working principle:

[0027] After the motor is started, the worm is driven to rotate, the worm drives the worm gear to rotate, since the worm gear and the screw rod are coaxially arranged through the key connection, so the screw rod rotates; the rotation of the screw rod makes the spherical nut move up and down under the action of the thread, and then drives the suspension device to realize the lifting or lowering of the weight. In this process, when the load eccentricity occurs, the spherical joint structure at the joint connector plays a role; the spherical surface matching between the spherical surface support, the spherical surface compression ring and the spherical surface slider can adaptively adjust the angle and position, effectively absorb the eccentric load, avoid the worm gear and the screw rod bearing excessive eccentric stress, so as to protect the key components of the equipment and reduce the failure rate.

[0028] The utility model discloses a spherical surface support, spherical surface slider and spherical surface compression ring are set up, form the unique spherical surface linkage structure, greatly expand the free degree of quick connection between worm gear, screw rod, suspension device, reduce the negative influence of load eccentricity to the hoist, improve the adaptability of elevator, reduce the failure rate and maintenance cost.

Claims

1. A spherical coupling elevator comprising a box (1), a worm (2), a worm wheel (3) and a screw (11), characterized in that: The top of the box (1) is provided with an end cover (4), one side of the box (1) is provided with a worm (2), the end of the worm (2) is connected with the output end of the motor through a shaft coupling, the worm (2) is engagedly connected with a worm gear (3), the worm gear (3) is provided with a lead screw (11), and the lead screw (11) is located in the box (1), the upper end of the lead screw (11) is connected with a joint connector (9) through threads and keys, the lower end of the lead screw (11) is connected with a spherical nut (12) through threads, and the outer portion of the spherical nut (12) is provided with a suspension device (13).

2. A spherical articulation lift according to claim 1, wherein: The upper portion of the joint connector (9) is provided with a thrust bearing (7), the lower portion of the joint connector (9) is provided with a spherical support (6), the joint connector (9) is provided with a transmission pin (9.1), the end of the transmission pin (9.1) is sleeved with a spherical sliding block (9.2), and the spherical sliding block (9.2) is in contact with the spherical support (6) in the box (1) and a spherical compression ring (5) on the end cover (4).

3. A spherical articulation lift as claimed in claim 2, wherein: The end cover (4) is provided with a spherical compression ring (5), and the lower surface of the spherical compression ring (5) is in contact with the spherical support (6) on the top of the joint connector (9).

4. A spherical articulation lift according to claim 1, wherein: The spherical nut (12) is connected with the suspension device (13) through a pin shaft.

5. A spherical articulation lift as claimed in claim 1, wherein: The worm gear (3) and the lead screw (11) are coaxially arranged and connected through keys.

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