CN215105132U

CN215105132U - Novel concentric screw hoist

Info

Publication number: CN215105132U
Application number: CN202023090160.XU
Authority: CN
Inventors: 陈广明; 詹雪舰
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-12-10
Anticipated expiration: 2030-12-21

Abstract

The utility model discloses a novel concentric screw rod headstock gear mainly includes power device, reduction gears and the hoist mechanism triplex that comprises outer screw rod and concentric rod, and concentric screw rod is hollow pipe shape, and the internal diameter slightly is greater than the outer screw rod in lower part, and concentric screw rod upper end is connected with drive gear and thrust bearing, and the lower tip has inner thread structure, and the lower part is outer screw rod, forms the screw pair with the concentric screw rod internal spiral connection in upper portion. The gate is connected with the bottom of the outer screw rod, and the power device drives the concentric screw rod to rotate after being decelerated by the decelerating mechanism, so as to drive the outer screw rod and the gate to move up and down, thereby realizing the opening and closing of the gate. This headstock gear adopts the hollow transfer line of installing the internal thread nut to replace the harness cord screw rod, makes the hoist and close the whole hollow bar inner chambers of promotion stroke of headstock gear screw rod in the computer lab, and normal open and close stroke screw rod no longer stands out the headstock gear upper end, and the equipment management of being convenient for is maintained, and the headstock gear roof need not the trompil, more does not have the worry of seepage, and the computer lab is inside and the outward appearance is clean and tidy pleasing to the eye.

Description

Novel concentric screw hoist

Technical Field

The utility model relates to a technical field is opened and close to the gate, concretely relates to novel concentric screw rod headstock gear.

Background

The screw hoist is a machine which drives a screw to move up and down linearly after being decelerated by a reducer by using a motor, the screw is directly connected with a gate vane or is connected with the gate vane through a guide sliding block and a connecting rod, and the gate is controlled by moving up and down the screw. The screw type hoist has simple structure and convenient installation and maintenance, is used for controlling the opening and closing of the gates of reservoirs, irrigation areas, riverways, embankments and pump station engineering, and has extremely wide application in the water conservancy industry.

At present, the screw hoist has mature technology and simple structure, but the following problems generally exist: 1) the top of the opening and closing machine room above the screw needs to be provided with a hole to ensure the stroke of the screw, so that leakage is easy to occur and the appearance is influenced; 2) the whole length of the screw is long, and the maintenance and management are difficult when the gate and the hoist are replaced.

SUMMERY OF THE UTILITY MODEL

For overcoming prior art's defect, the utility model aims to provide a novel concentric screw rod headstock gear to overcome among the prior art the problem that the headstock gear top needs the trompil.

Therefore, the utility model provides a novel concentric screw rod headstock gear, including concentric rod, be hollow pipe shape, concentric rod passes through thrust bearing and frame rotation and is connected, concentric rod lower part has the internal thread structure, outer screw rod, with the coaxial setting of concentric rod, and outer screw rod with the vice connection of internal thread structure spiral, the gate, with outer screw rod bottom is connected to and reduction gears, the input is connected with the power device transmission, the output with concentric rod top transmission is connected, is used for the drive concentric rod rotates, in order to drive outer screw rod and gate reciprocate, realize the switching of gate.

Further, the internal thread structure is an internal thread nut, and the internal thread nut is fixedly connected with the bottom of the concentric rod.

Further, the inner diameter of the concentric rod is slightly larger than the nominal diameter of the outer thread screw.

Further, the speed reducing mechanism comprises a belt transmission mechanism and a worm gear speed reducer, and the power device is a driving motor.

Further, the worm gear speed reducer is arranged above the concentric rod, and a turbine shaft of the worm gear speed reducer is in transmission connection with the top of the concentric rod.

Compared with the prior art, the beneficial effects of the utility model are that: the concentric screw hoist of the utility model adopts the hollow transmission rod provided with the internal screw nut to replace the screw nut, so that the hoisting stroke of the hoist screw in the machine room is completely embedded in the hollow transmission rod, and the upper end part of the hoist does not protrude during normal opening and closing, thereby facilitating the equipment management and maintenance; meanwhile, the screw and the hollow transmission rod are designed in a segmented mode, so that the hoist and the gate are convenient to replace and maintain; in addition, the top of the machine room is opened and closed without holes, leakage is avoided, and the interior and the appearance of the machine room are neat and attractive.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the novel concentric screw hoist of the utility model.

Description of the reference numerals

1. A worm gear reducer; 2. a thrust bearing chamber; 3. a belt drive mechanism; 4. a frame; 5. a concentric rod; 6. An internal thread nut; 7. an external thread screw; 8. lifting lugs; 9. and (4) a gate.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Fig. 1 shows some embodiments according to the invention.

As shown in fig. 1, a novel concentric screw hoist comprises a worm gear reducer 1, a thrust bearing chamber 2, a belt transmission mechanism 3, a frame 4, a concentric rod 5, an inner screw nut 6, an outer screw 7, a lifting lug 8 and a gate 9, wherein the worm gear reducer 1, the belt transmission mechanism 3 and a power driving mechanism formed by a driving motor arranged on one side of the thrust bearing chamber 2 are arranged conventionally, and the power device (the driving motor) and the speed reduction mechanism (the worm gear reducer 1 and the belt transmission mechanism 3) are arranged conventionally.

Specifically, as shown in fig. 1, the concentric rod 5 and the outer screw rod 7 are extended in the vertical direction, the gate 9 is disposed at the lower side of the outer screw rod 7, and the gate 9 is connected with the bottom of the outer screw rod 7 through a lifting lug 8 disposed at the upper end thereof.

Wherein, concentric rod 5 is hollow tubular structure, and the upper portion of concentric rod 5 is connected to the worm-gear axle among the worm gear reduction gear, and gravity transmits to the frame through thrust bearing, and 5 bottom inboard installations female screw nuts 6 of concentric rod, outer silk screw 7 are located 5 downside of concentric rod to with female screw nut 6 threaded connection, concentric rod 5, female screw nut 6 and outer silk screw 7 constitute hoist mechanism, are used for promoting gate 9.

When concentric rod 5 rotated under power drive mechanism's drive, outer silk screw 7 was spiral rotation in concentric rod 5, and outer silk screw 7 removes along vertical direction when the pivoted, because the gate 9 outside is provided with vertical guider to can drive the gate and reciprocate, finally realize the switching of gate 9.

Specifically, as shown in fig. 1, the worm gear reducer 1 and the thrust bearing are mounted on the frame 4, the outer ring of the thrust bearing is fixedly connected with the frame 4, and the inner ring of the thrust bearing is connected with the upper part of the concentric rod 5, so that the concentric rod 5 can rotate in the thrust bearing around the vertical direction.

The worm and gear speed reducer 1 is arranged above the top of the concentric rod 5, the top of the concentric rod 5 is fixedly connected with an output shaft of the worm and gear speed reducer 1, and the worm and gear speed reducer 1 is used for driving the concentric rod 5 to rotate.

The belt transmission mechanism 3 is arranged on the same side of the thrust bearing and the worm gear reducer 1, one belt pulley of the belt transmission mechanism 3 is in transmission connection with the driving motor, and the other belt pulley is in transmission connection with the input shaft of the worm gear reducer 1.

When the driving motor drives the belt transmission mechanism 3 to work, the rotating power is transmitted to the worm and gear reducer 1, the worm and gear reducer 1 drives the concentric rod 5 to rotate, and then the outer screw rod 7 and the gate 9 are driven to move up and down, and finally the gate 9 is opened and closed.

In some embodiments, the bottom of the concentric rod 5 may be directly processed with an internal thread structure, and the internal thread structure is in threaded fit with the external screw 7, so that the external screw 7 can also perform a spiral motion in the concentric rod 5, and finally the effect of opening and closing the gate 9 is achieved.

The utility model discloses a hoist will traditional hoist built-in worm wheel/lead screw nut separation, adopt hollow transfer line to replace lead screw nut and worm gear reducer to form wholly, motor output torque is after worm gear speed reduction, rotated by the hollow transfer line of worm gear drive, and the interior screw nut of tip rotates in step under the drive, and the outer screw rod of being connected through interior screw nut drive lower part and gate again is opened and close from top to bottom by outer screw rod drive gate.

When the motor drives the concentric rod to rotate, the screw nut at the bottom of the concentric rod and the outer screw rod at the lower part form spiral fit, and the outer screw rod moves up and down but does not rotate, so that the gate can be driven to move up and down.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a novel concentric screw rod headstock gear which characterized in that includes:

the concentric rod (5) is in a hollow round tube shape, the concentric rod (5) is rotatably connected with the rack (4) through a thrust bearing, the lower part of the concentric rod (5) is provided with an internal thread structure,

an external thread screw (7) which is coaxially arranged with the concentric rod (5), and the external thread screw (7) is connected with the internal thread structure screw pair,

a gate (9) connected to the bottom of the external screw (7), an

And the input end of the speed reducing mechanism is in transmission connection with a power device, the output end of the speed reducing mechanism is in transmission connection with the top of the concentric rod (5) and is used for driving the concentric rod (5) to rotate so as to drive the outer screw rod (7) and the gate (9) to move up and down, and the gate (9) is opened and closed.

2. The novel concentric screw hoist of claim 1, characterized in that the internal thread structure is an internal thread nut (6), and the internal thread nut (6) is fixedly connected with the bottom of the concentric rod (5).

3. The new concentric screw hoist according to claim 1, characterized by the fact that the inner diameter of the concentric rod (5) is greater than the nominal diameter of the outer threaded screw (7).

4. The novel concentric screw hoist of claim 1, characterized in that the reduction mechanism comprises a belt transmission mechanism (3) and a worm gear reducer (1), and the power device is a drive motor.

5. The new concentric screw hoist according to claim 4, characterized by the fact that the worm gear reducer (1) is placed above the concentric rod (5) and the turbine shaft of the worm gear reducer (1) forms a coaxial direct connection with the top of the concentric rod (5).