CN105605189B - Mechanical pulley transmission device - Google Patents

Abstract

The invention discloses a mechanical pulley transmission device, which comprises a shell, an input shaft and an output shaft, wherein a cavity is arranged in the shell, an annular track is arranged on the side wall of the cavity, at least two pulley devices are slidably arranged in the annular track, each pulley device comprises a pulley body capable of rotating, the input shaft and the output shaft are rotatably arranged on the shell, the input shaft and the output shaft extend into the cavity, an input blade is fixedly arranged at the end part of the input shaft positioned in the cavity, an output blade is fixedly arranged at the end part of the output shaft positioned in the cavity, a plurality of input upright columns are arranged on the input blade, a plurality of output upright columns are arranged on the output blade, each input upright column is connected with one output upright column by winding a pulley body in a pulley device through a rope, and the distance from the input upright column to the central line of the input shaft is smaller than the distance from the output upright column to the central line of the output shaft. The invention can adjust the transmission efficiency, realize high-efficiency transmission, has simple structure and also has the advantage of amplifying power.

Description

A mechanical pulley transmission

technical field

The invention relates to a mechanical pulley transmission device.

Background technique

The existing mechanical transmission mechanism will lose a lot of energy in the process of transmitting motion, and the transmission efficiency is low and not perfect. Therefore, the present invention provides a brand new mechanical pulley transmission device to solve the above problems.

Contents of the invention

In order to solve the above problems, the present invention provides a mechanical pulley transmission device.

The technical solution adopted by the present invention to solve its technical problems is:

A mechanical pulley transmission device, comprising a casing, an input shaft and an output shaft, the casing has a cavity, the side wall of the cavity is provided with an annular track, and at least two pulleys are slidably installed in the annular track, each A pulley includes at least one pulley body that can rotate by itself, the input shaft and output shaft are rotatably installed on the casing, and the two are coaxially arranged, the input shaft and the output shaft extend into the cavity, and the input shaft is located in the cavity An input blade is fixedly arranged at the end inside the cavity, an output blade is fixedly arranged at the end of the output shaft in the cavity, a number of input columns are arranged on the input blade, and a number of output columns are arranged on the output blade, each An input column is connected to an output column through a rope around a pulley body in a pulley, and the distance between the input column and the centerline of the input shaft is smaller than the distance between the output column and the centerline of the output shaft.

The input blade is provided with at least one rotatable auxiliary pulley on each input column or near the input column. The rope is wound around the first pulley body, then the auxiliary pulley, and then the next pulley body. Continuous circulation, and finally fixedly connected with the output column.

The invention also includes a plurality of toggling rods, one end of which is fixedly installed on the output blade, and the other end is matched with the pulley.

The pulley also includes a mounting seat, two sets of rollers are arranged on both sides of the mounting seat, the two sets of rollers cooperate with the circular track, the pulley body is rotatably installed on the mounting seat, and a In the elongated hole, a position-adjustable limit rod is arranged in the elongated hole, and the toggle rod is inserted into the elongated hole to cooperate with the limit rod; a ratchet is also arranged on the mounting seat.

A ratchet cooperating with the pawl is arranged on the inner side wall of the housing.

The annular track includes two opposite annular guide grooves, the roller is provided with an annular positioning groove with a V-shaped cross section, and the inner side walls of the annular guide groove are provided with annular protrusions matching the annular positioning groove .

The annular track includes two oppositely arranged annular guide grooves, the rollers are cylindrical rollers, and the side walls of the annular guide grooves are configured as cylindrical surfaces.

The beneficial effects of the present invention are: the present invention uses the input blade to drive the rope, and the rope passes through the pulley body and the auxiliary pulley to drive the output blade. The ratio of the distance or the number of the pulley body and the auxiliary pulley around the warp can adjust the transmission efficiency to realize high-efficiency transmission. The invention has simple structure, high transmission efficiency and the advantage of power amplification.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further described:

Fig. 1 is a schematic diagram one of the present invention;

Fig. 2 is a second schematic diagram of the present invention.

detailed description

With reference to Fig. 1～Fig. 2, the present invention is a kind of mechanical pulley transmission device, comprises casing 1, input shaft 6 and output shaft 5, has a cavity 2 in casing 1, and the side wall of cavity 2 is provided with an annular track, and the annular track Three pulleys 3 are slidably installed inside (the number of pulleys 3 can be set according to actual conditions, can be two or four or more), each pulley 3 includes at least one pulley body 4 that can rotate, and an input shaft 6 The input shaft 6 and the output shaft 5 are rotatably mounted on the casing 1, and the two are arranged coaxially. The input shaft 6 and the output shaft 5 extend into the cavity 2, and the end of the input shaft 6 located in the cavity 2 is fixedly provided with a plate shaped input blade 8, the end of the output shaft 5 located in the cavity 2 is fixedly provided with a plate-shaped output blade 7, and three input columns 10 are arranged on the edge of the input blade 8, and the input blade is placed on each input column or input At least one rotatable auxiliary pulley is arranged near the column, and three output columns 9 are arranged on the edge of the output blade 7, and each input column 10 is connected with an output column 9 through a pulley body 4 in a pulley device 3 by a rope 11, Or one end of the rope 11 is fixedly connected with an input column 10, and the other end is wound into the pulley body, the auxiliary pulley, and the pulley body (forming a structure of multiple pulley blocks) one by one on the pulley, and then fixedly connected with the output column, and the input column 10 is connected to the input column. The distance from the centerline of the shaft 6 is smaller than the distance from the output column 9 to the centerline of the output shaft 5 . The present invention includes three toggle levers 12, one end of the toggle lever 12 is fixedly installed on the output blade 7, and the other end is matched with the pulley 3; the pulley 3 also includes a mounting seat 13, and two sets of rollers 14 are arranged on both sides of the mounting seat 13 , two groups of rollers 14 cooperate with the circular track, the pulley body 4 is rotatably installed on the mounting base 13, and an elongated hole 15 is also arranged on the mounting base 13, and a position-adjustable limit rod 16 is arranged in the elongated hole 15 The toggle rod 12 is inserted into the elongated hole 15 to cooperate with the stop rod 16. By adjusting the stop rod 16, the ropes 11 on both sides of the pulley body 4 can be tangent to the input blade 8 and the output blade 7 respectively, and the limit One end of the rod towards the toggle lever is fixedly provided with a spring 17 (this spring 17 is used to reduce the rigid collision between the limit lever and the toggle lever), which can reach the best transmission efficiency at this time; Claw; the inner wall of the housing 1 is provided with a ratchet 18 cooperating with the pawl, and the cooperation between the pawl 22 and the ratchet 18 can effectively prevent reverse rotation.

The present invention uses the input blade 8 to drive the rope 11, and the rope 11 passes through the pulley body 4 and the auxiliary pulley to drive the output blade 7, by adjusting the distance from the input column 10 to the center line of the input shaft 6 and the distance between the output column 9 and the center line of the output shaft 5 The ratio of the distance or the number of the pulley body and the auxiliary pulley around the warp can adjust the transmission efficiency to realize high-efficiency transmission. The invention has simple structure, high transmission efficiency and the advantage of power amplification.

As shown in the figure, the annular track includes two oppositely arranged annular guide grooves 19. The roller 14 is provided with an annular positioning groove 20 with a V-shaped cross section. The annular protrusion 21 of. The cooperation of the annular protrusion 21 and the annular positioning groove 20 can reduce the lateral transmission of the roller 14 and reduce energy waste. Wherein the roller is also set as a cylindrical roller, correspondingly, the side wall of the annular guide groove 19 is set as a cylindrical surface.

The above-mentioned embodiments are only preferred versions of the present invention, and the present invention also has other embodiments. Those skilled in the art can also make equivalent modifications or replacements without departing from the spirit of the present invention, and these equivalent modifications or replacements are all included within the scope set by the claims of the present application.

Claims (7)

1. A mechanical pulley transmission, characterized in that it comprises a housing, an input shaft and an output shaft, a cavity is provided in the housing, the side wall of the cavity is provided with an annular track, and at least Two pulleys, each pulley includes at least one rotatable pulley body, the input shaft and the output shaft are rotatably mounted on the casing, and the two are coaxially arranged, the input shaft and the output shaft extend into the cavity, The end of the input shaft located in the cavity is fixedly provided with an input blade, the end of the output shaft located in the cavity is fixedly provided with an output blade, the input blade is provided with several input columns, and the output blade is provided with A plurality of output columns, each input column is connected to an output column through a rope around a pulley body in a pulley, and the distance between the input column and the centerline of the input shaft is smaller than the distance between the output column and the centerline of the output shaft. 2. A mechanical pulley transmission device according to claim 1, characterized in that said input blade is provided with at least one rotatable auxiliary pulley on or near each input column, and said rope passes through the first The first pulley body is then wound around the auxiliary pulley, and then the next pulley body is passed around for a continuous cycle, and finally it is fixedly connected with the output column. 3. A mechanical pulley transmission device according to claim 1, characterized in that it further comprises a plurality of toggling rods, one end of which is fixedly installed on the output blade, and the other end is matched with the pulley. 4. A mechanical pulley transmission device as claimed in claim 3, characterized in that the pulley device also includes a mounting seat, two sets of rollers are arranged on both sides of the mounting seat, and the two sets of rollers cooperate with the circular track, and the The pulley body is rotatably mounted on the mounting base, and an elongated hole is arranged on the mounting base, and a position-adjustable limit rod is arranged in the elongated hole. The bit bar is matched; a ratchet is also arranged on the mounting seat. 5. A mechanical pulley transmission device according to claim 4, characterized in that a ratchet cooperating with the ratchet is arranged on the inner wall of the housing. 6. A kind of mechanical pulley transmission device as claimed in claim 4, characterized in that said annular track comprises two oppositely arranged annular guide grooves, said roller is provided with an annular positioning groove with a V-shaped cross section, said Both inner sidewalls of the annular guide groove are provided with annular protrusions matched with the annular positioning groove. 7. A kind of mechanical pulley transmission device as claimed in claim 4, wherein the annular track comprises two oppositely arranged annular guide grooves, the rollers are cylindrical rollers, and the side walls of the annular guide grooves are arranged as cylindrical surface.