CN218813554U

CN218813554U - DC-powered screw hoist

Info

Publication number: CN218813554U
Application number: CN202223367132.7U
Authority: CN
Inventors: 周爱传; 魏建宏; 支世全
Original assignee: Changzhou Lanling Automation Equipment Co ltd
Current assignee: Changzhou Lanling Automation Equipment Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-04-07
Anticipated expiration: 2032-12-15

Abstract

The utility model belongs to the technical field of the screw rod headstock gear, especially, DC power supply's screw rod headstock gear now provides following scheme, including the organism, set up in the inside DC brushless motor of organism, install in the worm of DC brushless motor output end portion, with the driven worm wheel of worm meshing, worm wheel middle part screw drive has the valve rod of vertical setting, valve rod and flashboard fixed connection. The utility model discloses a set up stroke drive mechanism and absolute encoder, the operation of stroke drive mechanism drive absolute encoder, absolute encoder output digital signal is connected to control circuit through the cable, control circuit makes DC brushless motor stop according to absolute encoder's signal, realize that the gate is opened the position and is closed the position, can both the automatic shutdown, because of having used absolute encoder, when the screw hoist is confirmed to open and is closed the position, need not open the lid and just can debug, avoid the trouble because of uncapping arouses, also convenient debugging simultaneously.

Description

DC-powered screw hoist

Technical Field

The utility model relates to a screw rod headstock gear technical field especially relates to a DC power supply's screw rod headstock gear.

Background

The screw hoist is a machine which uses a threaded rod to connect with a gate leaf directly or through a guide slide block and a connecting rod, and the screw moves up and down to hoist the gate. With the wide development of water conservancy and hydropower engineering, the gate is widely used as a hoist and a gate on engineering projects such as riverway dams in reservoir irrigation areas, hydropower stations and the like. When foreign matters are below the gate plate and the gate is closed by the screw hoist, the screw hoist is easy to continue to operate, so that the screw is easy to bend and is damaged; in addition, in the opening or closing process of the gate, an operator is required to judge whether the gate is blocked or not according to own experience and make corresponding operation, and the judgment only according to the experience is easy to generate errors, so that the use of equipment is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at prior art's defect, provide a DC power supply's screw rod headstock gear for screw rod machine continuation operation leads to the screw rod crooked when making the gate totally close easily when solving when closing the gate, perhaps directly leads to the gate not to have the problem of totally closing.

A direct-current-powered screw hoist comprises a hoist body, a direct-current brushless motor arranged in the hoist body, a worm arranged at the output end part of the direct-current brushless motor, and a worm wheel meshed with the worm for transmission, wherein a vertically arranged valve rod is spirally transmitted in the middle of the worm wheel, the valve rod is fixedly connected with a flashboard, one side of the worm, which is far away from the worm wheel, is in transmission connection with a stroke transmission mechanism, the stroke transmission mechanism is connected with an absolute encoder through a transmission shaft, and the absolute encoder is electrically connected with a control circuit;

the stroke transmission mechanism comprises a connecting shaft, a gear and a joint, the gear is in meshed transmission connection with the worm, the gear is coaxially fixed on the connecting shaft, and the joint and the connecting shaft are integrally arranged and are inserted into a groove in the lower end of the transmission shaft.

By adopting the technical scheme, the automatic stop of the gate can be realized when the gate is opened to the position and closed to the position.

The shaft of the absolute encoder is inserted into the hole of the transmission shaft and fastened by a screw.

By adopting the technical scheme, the absolute encoder can normally operate.

The joint is arranged in a cuboid.

By adopting the technical scheme, the absolute encoder can be driven to rotate when the stroke transmission mechanism rotates.

The notch profile of the lower end of the transmission shaft is matched with the profile of the joint.

By adopting the technical scheme, the absolute encoder can normally operate.

The utility model discloses DC power supply's screw rod headstock gear's beneficial effect is:

through setting up stroke drive mechanism and absolute encoder, the operation of stroke drive mechanism drive absolute encoder, absolute encoder output digital signal is connected to control circuit through the cable, control circuit makes direct current brushless motor stop according to absolute encoder's signal, realize that the gate is opened the position and is closed the position, can both the automatic shutdown, because of having used absolute encoder, when the screw hoist is confirmed to open and is closed the position, need not open the lid and just can debug, avoid because of the trouble that uncaps and arouse, also convenient debugging simultaneously.

Drawings

Fig. 1 is a position distribution diagram of a screw hoist body and a worm wheel of the dc power supply of the present invention;

fig. 2 is a front view of the dc-powered screw hoist of the present invention;

fig. 3 is an enlarged view of a position a in fig. 2 of the dc-powered screw hoist of the present invention.

In the figure: 1. a body; 2. a DC brushless motor; 3. a worm; 4. a worm gear; 5. a stroke transmission mechanism; 501. a connecting shaft; 502. a gear; 503. a joint; 6. a drive shaft; 7. a valve stem; 8. a shutter plate; 9. an absolute encoder; 10. a control circuit.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be clearly and clearly defined.

Referring to fig. 1-3, a direct current powered screw hoist comprises a machine body 1, a direct current brushless motor 2 arranged inside the machine body 1, a worm 3 arranged at the output end part of the direct current brushless motor 2, and a worm wheel 4 in meshed transmission with the worm 3, wherein a vertically arranged valve rod 7 is in spiral transmission in the middle of the worm wheel 4, the valve rod 7 is fixedly connected with a flashboard 8, one side of the worm 3, which is far away from the worm wheel 4, is in transmission connection with a stroke transmission mechanism 5, the stroke transmission mechanism 5 is connected with an absolute encoder 9 through a transmission shaft 6, and the absolute encoder 9 is electrically connected with a control circuit 10;

through external group battery (48V DC power supply), drive DC brushless motor 2 rotates, through the groove of 2 heads of DC brushless motor, drives worm 3 and rotates, and worm 3 drives worm wheel 4 and rotates, drives valve rod 7 through screw mechanism and upwards or moves down, drives flashboard 8 and upwards or moves down, plays and opens or close the gate effect.

The stroke transmission mechanism 5 comprises a connecting shaft 501, a gear 502 and a joint 503, the gear 502 is in meshing transmission connection with the worm 3, the gear 502 is coaxially fixed on the connecting shaft 501, the joint 503 and the connecting shaft 501 are integrally arranged and are inserted into a groove at the lower end of the transmission shaft 6, and the joint 503 is in a rectangular structure;

when the worm 3 rotates, the gear 502 on the stroke transmission mechanism 5 is driven to rotate, so that the connecting shaft 501 of the stroke transmission mechanism 5 rotates, the joint 503 at the upper end of the connecting shaft 501 of the stroke transmission mechanism 5 is inserted into the groove at the lower end of the transmission shaft 6, and the shaft of the absolute encoder 9 is inserted into the hole of the transmission shaft 6 and is fastened by screws; when the travel transmission mechanism 5 rotates, the absolute encoder 9 is driven to rotate. The absolute encoder 9 outputs digital signals to be connected to the control circuit 10 through a cable, and the control circuit 10 stops the motor according to the signals of the absolute encoder 9, so that the gate can be automatically stopped when being opened to a position and closed to the position.

The shaft of the absolute encoder 9 is inserted into the hole of the transmission shaft 6 and is fastened by a screw, and the notch contour of the lower end part of the transmission shaft 6 is matched with the contour of the joint 503;

it should be noted that: because of using absolute encoder 9, when the screw headstock gear confirmed the position of opening and closing, need not open the lid and just can debug, avoid the trouble because of uncapping arouses, also convenient debugging simultaneously. Meanwhile, the control circuit 10 detects the voltage and current values applied to the dc brushless motor 2, calculates the voltage and current values, and determines the real-time power of the dc brushless motor 2, and when the power reaches a set value (the set value can be set on site), the control circuit 10 stops the dc brushless motor 2, thereby realizing the "over-force" protection. The valve rod 7 is prevented from being broken or bent to prevent the valve from being damaged.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The utility model provides a direct current power supply's screw rod headstock gear, includes organism (1), sets up in inside direct current brushless motor (2) of organism (1), installs in direct current brushless motor (2) output end portion worm (3), with worm (3) meshing driven worm wheel (4), its characterized in that: a vertically arranged valve rod (7) is in spiral transmission in the middle of the worm wheel (4), the valve rod (7) is fixedly connected with the flashboard (8), one side, far away from the worm wheel (4), of the worm (3) is in transmission connection with a stroke transmission mechanism (5), the stroke transmission mechanism (5) is connected with an absolute encoder (9) through a transmission shaft (6), and the absolute encoder (9) is electrically connected with a control circuit (10);

the stroke transmission mechanism (5) comprises a connecting shaft (501), a gear (502) and a joint (503), the gear (502) is in meshing transmission connection with the worm (3), the gear (502) is coaxially fixed on the connecting shaft (501), and the joint (503) and the connecting shaft (501) are integrally arranged and inserted into a groove at the lower end of the transmission shaft (6).

2. The dc powered screw hoist of claim 1, characterized in that: the shaft of the absolute encoder (9) is inserted into the hole of the transmission shaft (6) and is fastened through a screw.

3. The dc powered screw hoist of claim 2, characterized in that: the joint (503) is arranged in a cuboid.

4. The dc powered screw hoist of claim 3, characterized in that: the notch profile of the lower end of the transmission shaft (6) is matched with the profile of the joint (503).