CN218992946U

CN218992946U - Pitching mechanism

Info

Publication number: CN218992946U
Application number: CN202320078856.5U
Authority: CN
Inventors: 曹时凯; 李杰谟; 高嵩
Original assignee: Tianjin Josen Technology Co ltd
Current assignee: Tianjin Josen Technology Co ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-05-09
Anticipated expiration: 2033-01-10

Abstract

A pitching mechanism belongs to a transmission mechanism, a nut support is arranged in a support of the pitching mechanism, a bearing hole is formed in the front end of the nut support relatively, a bearing is embedded in the bearing hole, two ends of a rotating shaft are respectively inserted in the bearing and connected with a mounting seat, a mounting plate and a nut are arranged at the rear end of the nut support, a gear motor is arranged on the mounting plate, a screw rod and a guide pillar are respectively arranged between the mounting plate and the nut, two ends of the guide pillar are respectively fixedly arranged on the mounting plate and the nut, the bottom of the screw rod is rotatably arranged in a nut plate, an output shaft of the gear motor is connected with the top of the screw rod, and two ends of a crank are respectively connected with the nut and the rotating shaft. The beneficial effects of the utility model are as follows: through nut, lead screw and crank combined action, the mode of increasing the arm of force reduces gear motor's moment and power, realizes that little motor drives heavy load, increases gear motor's selectivity, and gear motor's selection scope is wider.

Description

Pitching mechanism

Technical Field

The utility model belongs to the field of transmission, and particularly relates to a pitching mechanism.

Background

The common screen pitching adopts a screen rotating shaft to be directly connected with an output shaft of a gear motor, and the rotating shaft is directly driven to rotate through the output shaft so as to drive the screen to pitch. The connection mode has the defects that: the torque borne by the screen rotating shaft is the torque of the speed reducing motor, and the required motor has high power and more severe volume and performance requirements

Disclosure of Invention

The utility model aims to overcome the defects and provide a pitching mechanism which reduces the moment and the power of a speed reduction motor through the combined action of a nut, a screw rod and a crank, thereby realizing that a small motor drives a large load.

The utility model aims at realizing the following technical scheme: a pitch mechanism, characterized by: including support, nut support, bearing a, pivot, nut, mounting panel, gear motor, guide pillar, lead screw and crank, the support wall is equipped with the window, and nut support installs in the support, and the front end of nut support is located the window outside, and the both sides of nut support front end set up relative bearing hole, and bearing hole embedment bearing a, the both ends of pivot cartridge respectively in bearing a, with nut support sliding fit, the rear end of nut support is equipped with mounting panel and lower mounting panel, installs the mounting panel on the mounting panel, gear motor installs on the mounting panel, lead screw and guide pillar pass the nut respectively, the top and the output shaft of gear motor of lead screw, the tail end and the nut leg joint of lead screw, the both ends of guide pillar respectively with mounting panel and nut leg joint, the both ends of crank are connected with nut and pivot respectively.

The nut support comprises a nut support a and a nut support b, wherein the nut support b is connected to the front end of the nut support a, opposite bearing holes are formed in two sides of the nut support b, and bearings are embedded in the bearing holes.

The two ends of the rotating shaft are respectively inserted into the bearings, are in sliding fit with the nut bracket b, and are fixed in the bearing holes of the nut bracket b through gaskets and snap springs.

The lower support plate of the nut support is in sliding fit with a bearing c, and the tail end of the screw rod is connected with the nut support through the bearing c.

The beneficial effects of the utility model are as follows:

1. the pitching mechanism reduces the moment and the power of the gear motor by increasing the force arm, increases the selectivity of the gear motor and has wider selection range of the gear motor.

2. The speed reducing motor, the screw rod nut and the connecting rod are connected with each other to act together to drive the pitching of the screen, and the moment of the speed reducing motor is reduced by increasing the moment arm, so that the small motor drives a large load.

Drawings

FIG. 1 is a schematic anatomical illustration of the structure of the present utility model.

Fig. 2 is a side view of a structure for use with the present utility model.

Fig. 3 is a schematic view of the A-A direction structure of fig. 2.

Fig. 4 is a rear view of the structure of the present utility model in use.

Fig. 5 is a schematic view of the B-B direction structure of fig. 4.

Fig. 6 is a schematic view of the C-C direction structure of fig. 4.

Wherein:

1-support, 2-nut support a, 3-bearing a, 4-rotating shaft, 5-mounting seat a, 6-mounting seat b, 7-nut support b, 8-nut, 9-mounting plate, 10-gear motor, 11-guide pillar, 12-screw rod, 18-bearing c, 20-crank, 21-gasket, 22-snap spring and 23-screen.

Detailed Description

Examples: as shown in the figure, the pitching mechanism comprises a bracket 1, a nut bracket a2, a bearing a3, a rotating shaft 4, a mounting seat a5, a mounting seat b6, a nut bracket b7, a nut 8, a mounting plate 9, a gear motor 10, a guide post 11, a screw rod 12, a bearing c18, a crank 20, a gasket 21 and a clamp spring 22, wherein a window is arranged on the wall of the bracket 1, the nut bracket a2 is mounted in the bracket 1, the front end of the nut bracket a2 is positioned outside the window, the nut bracket b7 is fixedly connected, opposite bearing holes are formed in the two sides of the front end of the nut bracket b7, the bearing a3 is embedded in the bearing holes, the two ends of the rotating shaft 4 are respectively inserted into the bearing a3 and are in sliding fit with the nut bracket b7, the bearing is fixed through the gasket 21 and the clamp spring 22, the mounting seat a5 and the mounting seat b6 which are fixed at the rear end of a screen 23, an upper support plate and a lower support plate are arranged at the rear end of the nut bracket a2, the gear motor 10 is mounted on the mounting plate 9, the screw rod 12 and the guide post 11 respectively pass through the nut 8, the top end of the output shaft of the screw rod 12 and the screw rod 12 is connected with the output shaft of the gear motor 10 and the end of the gear motor 10, the two ends of the bearing bracket 18 are respectively connected with the two ends of the nut bracket 2 through the bearing c 2 and the bearing bracket 2 and the two end of the nut 2 through the bearing bracket 2.

Working principle:

the screen 23 is fixedly connected with the mounting seat a5 and the mounting seat b6, the gear motor 10 is electrified to drive the screw rod 12 to rotate, the screw rod 12 drives the nut 8 to realize up-down linear motion, the nut 8 drives the crank 20 to rotate up-down, and because the crank 20 is connected with the rotating shaft 4 in a D-shaped position and the rotating shaft 4 rotates relative to the nut bracket b7, the crank 20 rotates to drive the rotating shaft 4 to rotate, the mounting seat a5, the mounting seat b6 are fixedly connected with the rotating shaft 4 in a D-shaped manner, and the rotating shaft 4 rotates to drive the mounting seat a5 and the mounting seat b6 to rotate, so that the screen 23 is driven to realize pitching motion.

Because the crank, the screw rod and the nut are added between the rotating shaft and the motor, the moment required for realizing the pitching of the screen is equal to the thrust of the nut multiplied by the effective moment arm between the nut and the rotating shaft, namely, the moment required for driving the pitching of the screen by adopting the mode is much smaller than the moment required for directly driving the pitching of the screen by adopting the speed reducing motor, and the required motor size and power are also much smaller.

Claims

1. A pitch mechanism, characterized by: the device comprises a bracket, a nut bracket, a bearing a, a rotating shaft, a nut, a mounting plate, a gear motor, a guide post, a screw rod and a crank, wherein a window is arranged on the wall of the bracket, the nut bracket is mounted in the bracket, the front end of the nut bracket is positioned outside the window, opposite bearing holes are formed in the two sides of the front end of the nut bracket, the bearing a is embedded in the bearing holes, the two ends of the rotating shaft are respectively inserted in the bearing a and are in sliding fit with the nut bracket, an upper support plate and a lower support plate are arranged at the rear end of the nut bracket, the mounting plate is mounted on the upper support plate, the gear motor is mounted on the mounting plate, the screw rod and the guide post respectively penetrate through the nut, the top end of the screw rod is connected with the output shaft of the gear motor, the tail end of the screw rod is connected with the nut bracket, the two ends of the guide post are respectively connected with the mounting plate and the nut bracket, and the two ends of the crank are respectively connected with the nut and the rotating shaft.

2. The pitch mechanism as defined in claim 1, wherein: the nut support comprises a nut support a and a nut support b, wherein the nut support b is connected to the front end of the nut support a, opposite bearing holes are formed in two sides of the nut support b, and bearings are embedded in the bearing holes.

3. The pitch mechanism as defined in claim 2, wherein: the two ends of the rotating shaft are respectively inserted into the bearings, are in sliding fit with the nut bracket b, and are fixed in the bearing holes of the nut bracket b through gaskets and snap springs.

4. A pitch mechanism according to claim 1 or 2, wherein: the lower support plate of the nut support is in sliding fit with a bearing c, and the tail end of the screw rod is connected with the nut support through the bearing c.