Drawings
Fig. 1 is a schematic diagram of a driving structure of a double-group servo motor in a worm gear double-shaft speed reducer based on gear changing and speed regulation.
Fig. 2 is a schematic diagram of a partial structure of a single group of servo motor drive type in a worm gear double-shaft speed reducer based on gear change and speed regulation.
Fig. 3 is a schematic internal perspective view of a main machine of a worm gear double-shaft speed reducer based on gear change speed regulation.
Fig. 4 is a schematic diagram of an internal side view structure of a main machine of a worm gear double-shaft speed reducer based on gear change speed regulation.
Fig. 5 is a schematic diagram of a three-dimensional structure of a double-shaft output mechanism in a worm gear double-shaft speed reducer based on gear change and speed regulation.
Fig. 6 is a schematic diagram of a top view structure of a double-shaft output mechanism in a worm gear double-shaft speed reducer based on gear change speed regulation.
Fig. 7 is a schematic diagram of a side view structure of a double-shaft output mechanism in a worm gear double-shaft speed reducer based on gear change speed regulation.
Fig. 8 is an enlarged schematic view of the structure of A1 in fig. 7.
Fig. 9 is an enlarged schematic view of the structure of A2 in fig. 6.
Fig. 10 is an enlarged schematic view of the structure of A3 in fig. 6.
FIG. 11 is an enlarged schematic view of the structure of A4 in FIG. 1;
Wherein: the speed reducer main unit 1, the double-shaft output mechanism 2, the servo motor i 10, the servo motor ii 11, the coupling 12, the worm i 13, the worm ii 14, the worm wheel i 15, the worm wheel ii 16, the bearing i 17, the lower end cover 18, the output shaft i 19, the output shaft ii 20, the connecting flange 22, the hanging ring 24, the ventilation oil plug 25, the connecting clamping hole 26, the fixed speed shaft 28, the speed changing shaft 29, the speed changing shaft connecting cylinder 30, the fixed speed shaft connecting cylinder 31, the clamping pin 32, the bearing ii 33, the connecting rod 34, the start-stop connecting sleeve 35, the start-stop transmission cylinder rod 36, the start-stop push block 37, the electric telescopic rod i 38, the mounting plate 39, the rotary ring 40, the rotary rail 41, the positioning hole 42, the telescopic positioning post 43, the spring 45, the spring connecting ring 46, the positioning insertion hole 47, the positioning plunger 48, the main driving tooth i 49, the main driving tooth ii 50, the main driving tooth iii 51, the speed adjusting tooth iii 52, the speed adjusting tooth iii 53, the speed adjusting tooth iii 54, the connecting shaft 55, the positioning key 56, 57, the speed adjusting sleeve 58, the electric telescopic rod ii 59, the fixed rod i 60, the rotary block ii 62, the rotary ring groove ii 64, the rotary ring groove ii 65, the driving tooth iii and the driving tooth iii of the driving tooth iii.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1-7, a worm gear double-shaft speed reducer based on gear changing and speed regulation comprises a speed reducer main machine 1, wherein the speed reducer main machine 1 is used for providing power for double-shaft output, the speed reducer main machine 1 comprises a double-group worm gear transmission structure and a group of driving components, the input ends of the worm gear transmission structure are respectively connected with the driving components, the output ends of the double-group worm gear structure are respectively connected with an output shaft II 20 and an output shaft I19 which are arranged in an internal and external rotation sleeved mode, and the output shaft I19 and the output shaft II 20 independently operate, namely double-shaft output is realized;
the driving assembly is driven by a single group of servo motors or a double group of servo motors, the single group of servo motors drive the output shaft I19 and the output shaft II 20 to start and stop running synchronously under the connection action of the worm gear transmission structure, the energy saving and cost reduction functions are realized, and the double group of servo motors drive the output shaft I19 and the output shaft II 20 to start and stop running asynchronously under the connection action of the worm gear transmission structure, so that the energy saving and cost reduction type automatic control device has the advantages of strong controllability and flexible operation;
The double-shaft output mechanism 2 is detachably connected to the outer ends of the output shafts I19 and II 20, and drives the double-shaft output mechanism 2 to perform instant stop constant-speed output and controllable variable-speed output under the rotary drive of the output shafts I19 and II 20, wherein the double-shaft output mechanism 2 comprises constant-speed output units and variable-speed output units which are distributed in a rotating fit manner, the constant-speed output units are detachably connected with the output shaft II 20, the constant-speed output units comprise automatic start-stop transmission components, the output ends of the automatic start-stop transmission components are connected with constant-speed shafts 28, the constant-speed shafts 28 are connected with an external device structure to be used, and under the connection of the automatic start-stop transmission components, the constant-speed shafts 28 and the output shaft II 20 are controlled to synchronously rotate at constant speed or the constant-speed shafts 28 are controlled to independently stop (the output shaft II 20 is in an operating state), so that the functions of providing quick start-stop and constant-speed output are realized;
The speed change output unit is connected with the output shaft I19 in a detachable mode, the speed change output unit comprises an automatic speed regulation component, the output end of the automatic speed regulation component is connected with a speed change shaft 29, the speed change shaft 29 is connected with an external device to be used in a structure and is installed, on the premise that the rotating speed of the output shaft I19 is inconvenient, the speed change output unit is connected with the automatic speed regulation component, the speed change output unit can provide speed outputs of different gears for the speed change shaft 29, namely, a flexible speed change output function is achieved, the fixed speed output unit and the speed change output unit are matched with each other, the problems that structural damage is caused by frequent start and stop or overhigh speed change frequency are solved, the service life is prolonged to a certain extent, and the use range of the speed reducer is increased.
In the embodiment of the invention, the outer sides of the connection of the worm and gear transmission structure and the output shafts I19 and II 20 are provided with a box body, a shell and the like according to the shape of the structure, so that the structure can be installed, wrapped and protected, and normal operation can be performed, and the box body and the shell structure which are specifically used are of a conventional structure and are not repeated herein; meanwhile, the box body is provided with a hanging ring 24 and a ventilation oil plug 25, which are all conventional structures of a speed reducer and are not described in detail herein;
Referring to fig. 1-4, the worm and gear transmission structure comprises a box body, wherein the inner side of an output shaft I19 is rotationally sleeved on the outer side of an output shaft II 20 through a bearing, the inner ends of the output shaft I19 and the output shaft II 20 extend to the inner side of the box body and are respectively connected with a worm wheel I15 and a worm wheel II 16, the outer sides of the worm wheel I15 and the worm wheel II 16 are respectively meshed with a vertically distributed worm I13 and a worm II 14, the top ends of the worm I13 and the worm II 14 are connected with a connecting flange 22 through a coupling 12, the top of the connecting flange 22 is connected with a driving assembly, namely, under the operation of the driving assembly, the connecting flange 22 is synchronously driven to control the worm I13 and the worm II 14 to rotate, and then the worm I19 and the output shaft II 20 are driven to rotate by the meshing of the worm I13 and the worm wheel I15;
When the driving assembly adopts double groups of servo motors, the driving assembly comprises a servo motor I10 and a servo motor II 11 which are connected to the tops of a connecting flange 22 on the upper side of a worm I13 and a worm II 14, namely, the rotation operation of the servo motor I10 and the servo motor II 11 is utilized, and the operation driving of an output shaft I19 and an output shaft II 20 is realized through the connection of structures such as the connecting flange 22 and a coupling 12, namely, the operation speed and the operation direction of the servo motor I10 and the servo motor II 11 are controlled respectively, so that the double-shaft output can be controlled flexibly;
When the driving assembly adopts a single group of servo motors, the single group of servo motors comprise driven teeth 69 connected to the top ends of the connecting flanges 22 at the tops of the worm I13 and the worm II 14, a group of driving teeth 68 are meshed between the driven teeth 69 at the two sides, the middle part of the top of each driving tooth 68 is connected with a servo motor III 66, the servo motors III 66 are started to operate, the driving teeth 68 are driven to rotate, then the worm I13 and the worm II 14 are driven to rotate under the simultaneous meshed connection of the driving teeth 68 and the driven teeth 69 at the two sides, and then the output shaft I19 and the output shaft II 20 are synchronously driven to rotate under the connection of the worm wheel I15, the worm wheel II 16 and the like;
it should be noted that, in the process of machining, errors exist in the worm and gear, and meanwhile, gaps are generated in the running process of the worm and gear, so that in order to increase the accuracy of the worm and gear, gap adjustment needs to be performed on the worm and gear, and the adjustment method is to reduce the center distance between the worm and gear;
the specific operation is as follows: the bottom ends of the worm I13 and the worm II 14 are rotationally connected with a lower end cover 18 through a bearing I17, the lower end cover 18 and a connecting flange 22 are both arranged into an inner and outer circular eccentric structure, and the central distance can be reduced and adjusted by simultaneously rotating the angles of the lower end cover 18 and the connecting flange 22 during adjustment;
Specifically, for reducing wear during operation, cuSn12 is selected for materials of the worm I13, the worm II 14, the worm wheel I15 and the worm wheel II 16, meanwhile, roughness of the worm I13 and the worm II 14 is smaller than Ra0.6, and tooth shapes of the worm are selected from Niman worm tooth shapes.
In one example of the invention, the automatic start-stop transmission assembly comprises a fixed speed shaft connecting disc 31 which is connected with an output shaft II 20 in a plug-in manner, a connecting rod 34 is connected to the fixed speed shaft connecting disc 31 at the center of one end far away from the output shaft II 20, a start-stop connecting sleeve 35 is arranged at the end part of the connecting rod 34, the inside of the start-stop connecting sleeve 35 is arranged into a cavity structure, one side far away from the connecting rod 34 is arranged into an opening shape, a group of start-stop transmission barrel rods 36 are rotatably connected to the inside of the start-stop connecting sleeve 35, a group of positioning pieces are axially arranged in the inside of the start-stop transmission barrel rods 36 and used for limiting the rotation of the start-stop transmission barrel rods 36 in the inside of the start-stop connecting sleeve 35, one end of the start-stop transmission barrel rods 36 far away from the connecting rod 34 is connected with a fixed speed shaft 28, the fixed speed shaft connecting disc 31 rotates along with the output shaft II 20 after the fixed speed shaft connecting disc 31 is connected with the output shaft II 20, then the start-stop connecting sleeve 35 is synchronously driven to rotate under the connection of the connecting rod 34, and then under the action of the positioning pieces, the start-stop transmission barrel rods 36 are controlled to rotate along with the start-stop connecting sleeve 35;
Specifically, referring to fig. 8 and 11, a circle of rotating ring 40 is installed on the peripheral outer wall of the end part of the start-stop transmission cylinder rod 36 facing the start-stop connecting sleeve 35, a rotating track 41 which is in rotary connection with the rotating ring 40 is arranged in the inner wall of the start-stop connecting sleeve 35 corresponding to the rotating ring 40, and the start-stop transmission cylinder rod 36 is kept to be rotatably installed in the start-stop connecting sleeve 35 by utilizing the rotary connection between the rotating ring 40 and the rotating track 41;
The positioning piece comprises a plurality of telescopic holes which are formed on the circumferential outer side wall of one side of the start-stop type transmission cylinder rod 36, which is close to the rotary ring 40, the telescopic holes are uniformly distributed on the outer wall of the start-stop type transmission cylinder rod 36 in a ring shape, a telescopic positioning column 43 is elastically arranged in each telescopic hole, a positioning hole 42 is formed on the inner wall of a start-stop connecting sleeve 35 corresponding to the outer end part of the telescopic positioning column 43, the telescopic positioning column 43 is spliced with the positioning hole 42, a circle of spring connecting rings 46 are arranged on the circumferential side wall of the telescopic positioning column 43, which faces the inner side of the start-stop type transmission cylinder rod 36, a plurality of uniformly distributed springs 45 are elastically connected between the spring connecting rings 46 and the inner wall of the start-stop type transmission cylinder rod 36 in a ring shape, when the springs 45 are in a free state, the end parts of the telescopic positioning column 43 are controlled to shrink into the telescopic holes, a group of start-stop pushing blocks 37 are axially arranged in the middle part of the start-stop type transmission cylinder rod 36, the side of the start-stop push block 37 far away from the start-stop transmission cylinder rod 36 is connected with an electric telescopic rod I38, the end part of the electric telescopic rod I38 is provided with a mounting plate 39, the mounting plate 39 is fixed at the opening of the start-stop transmission cylinder rod 36, the start-stop push block 37 is arranged into a conical structure, the start-stop push block 37 moves along the inside of the start-stop transmission cylinder rod 36 under the movement drive of the electric telescopic rod I38, the conical structure with the gradually increased diameter of the start-stop push block 37 is utilized, simultaneously, the outward thrust is exerted on the telescopic positioning column 43 until the telescopic positioning column 43 is inserted into a corresponding positioning hole 42, at the moment, the start-stop transmission cylinder rod 36 is fixedly connected with the start-stop connecting sleeve 35, the start-stop transmission cylinder rod 36 is driven to rotate at the same time when the start-stop connecting sleeve 35 is driven to rotate, the fixed speed shaft 28 is driven to rotate, and conversely, when the telescopic positioning column 43 is not inserted into the positioning hole 42, the start-stop connecting sleeve 35 is in a separated state, at the moment, the fixed speed shaft 28 cannot receive rotary thrust, namely is in a static state, so that the start and stop of the fixed speed shaft 28 can be accurately and quickly controlled by controlling the electric telescopic rod I38;
Specifically, the middle part of the end of the start-stop push block 37 is provided with a positioning inserting rod 48, the middle part in the start-stop transmission cylinder rod 36 corresponding to the positioning inserting rod 48 is provided with a positioning inserting hole 47, and the positioning inserting rod 48 is inserted into the positioning inserting hole 47, so that the accurate positioning of the start-stop push block 37 during the forced movement is ensured.
As a preferred embodiment of the invention, the automatic speed regulating assembly comprises a speed changing shaft connecting cylinder 30 which is connected with an output shaft I19 in a plugging manner, a plurality of main driving teeth I49, main driving teeth II 50 and main driving teeth III 51 with diameters which are changed in sequence are arranged on the peripheral outer wall of the speed changing shaft connecting cylinder 30 at equal intervals along the axial direction, the main driving teeth I49, the main driving teeth II 50 and the main driving teeth III 51 synchronously rotate along with the speed changing shaft connecting cylinder 30, one side of the main driving teeth I49, the main driving teeth II 50 and the main driving teeth III 51 is provided with a group of connecting shafts 55, three groups of speed regulating teeth I52, speed regulating teeth II 53 and speed regulating teeth III 54 with constant intervals are sleeved on the connecting shafts 55, the centers of the speed regulating teeth I52, the speed regulating teeth II 53 and the speed regulating teeth III 54 are all arranged on the connecting shafts 55 in a sliding manner through sliding sleeves, positioning keys 56 are arranged on the peripheral outer wall of the connecting shafts 55 along the axial direction, a positioning chute is formed at the position, corresponding to the positioning key 56, of the inner side of the sliding sleeve, the positioning key 56 and the positioning chute are circumferentially limited, namely, the sliding sleeve is ensured to rotate, the connecting shaft 55 is driven to rotate, wherein the speed regulating teeth I52 and the main driving teeth I49, II 53 and the main driving teeth II 50, III 54 and III 51 are all arranged to be in a mutual meshed structure, the distance between the main driving teeth I49, II 50 and III 51 is smaller than the distance between the speed regulating teeth II 53, II 53 and III 54, namely, the speed regulating teeth I52 and I49, II 53 and II 50, III 54 and III 51 are ensured to have a meshed position state at any moment, and then the diameters of the main driving teeth I49, II 50 and III 51 are different, when the speed change shaft is driven by the rotation of the speed change shaft connecting cylinder 30, the corresponding speed change teeth I52, II 53 and III 54 are driven to rotate at different speeds, so that the speed change output of the speed change shaft 29 is realized;
In order to keep the connecting shaft 55 stably arranged on one side of the speed change shaft connecting cylinder 30 to run, two positioning blocks 57 are rotatably arranged at two ends of the connecting shaft 55, one side of the positioning blocks 57 facing the speed change shaft connecting cylinder 30 is rotatably connected to the side wall of the speed change shaft connecting cylinder 30 through a fixing rod II 65 and a fixing rod I60 respectively, namely, the connecting shaft 55 is kept in a static state relative to the rotation of the speed change shaft connecting cylinder 30;
Specifically, referring to fig. 8 and 9, a rotary block i 61 is installed at the end of a fixed rod ii 65, a rotary ring groove i 62 is formed in the circumferential outer side wall of the transmission shaft connecting cylinder 30 corresponding to the rotary block i 61, the rotary block i 61 is placed in the rotary ring groove i 62 to rotate, a rotary ring groove ii 63 is formed in the vertical side wall of the transmission shaft connecting cylinder 30 corresponding to the fixed rod i 60, a rotary block ii 64 is connected to the end of the fixed rod i 60, and the rotary block ii 64 is placed in the rotary ring groove ii 63 to rotate, namely, stability between the positioning block 57 and the transmission shaft connecting cylinder 30 is ensured;
One side of the speed regulating tooth III 54 is sleeved with a group of moving parts, and the moving parts are used for driving the sliding sleeve to move along the connecting shaft 55, namely, gears for regulating corresponding rotating speeds are meshed, namely, automatic speed regulation is realized;
The moving part comprises a speed regulating sleeve 58 which is sleeved outside the speed regulating teeth III 54, one side of the speed regulating sleeve 58 is connected with an electric telescopic rod II 59, one side of the electric telescopic rod II 59 is fixed on the positioning block 57 through a connecting rod, namely, the electric telescopic rod II 59 is started to drive the speed regulating sleeve 58 to move, and then, through the sleeve clamp between the speed regulating sleeve 58 and the speed regulating teeth III 54, the sliding sleeve is driven to axially move along the connecting shaft 55, so that the position adjustment of the speed regulating teeth I52, the speed regulating teeth II 53 and the speed regulating teeth III 54 is realized.
The main driving teeth I49, the main driving teeth II 50 and the main driving teeth III 51, the speed regulating teeth II 53 and the speed regulating teeth III 54 are all in a constant design, so that when the position of the moving part is adjusted, accurate distance movement can be realized, and accurate gear engagement conversion is ensured in a short time;
As a preferred embodiment of the invention, the axial distance difference between the gear shaft connecting cylinder 30 and the fixed speed shaft connecting disc 31 is equal to the axial distance difference between the outer surfaces of the output shaft I19 and the output shaft II 20, namely, the fixed speed shaft connecting disc 31 and the gear shaft connecting cylinder 30 can be simultaneously inserted and installed with the corresponding output shaft II 20 and the output shaft I19, and a group of bearings II 33 are arranged between the gear shaft connecting cylinder 30 and the fixed speed shaft connecting disc 31 and used for keeping independent rotation between the gear shaft connecting cylinder 30 and the fixed speed shaft connecting disc 31;
The gear shaft connecting cylinder 30 and the fixed speed shaft connecting disc 31 are annularly provided with a plurality of clamping pins 32 towards the side surfaces of the output shaft I19 and the output shaft II 20, the outer side walls of the output shaft I19 and the output shaft II 20 corresponding to the clamping pins 32 are provided with connecting clamping holes 26, and the clamping pins 32 are clamped with the connecting clamping holes 26, so that the detachable connection between the gear shaft connecting cylinder 30 and the fixed speed shaft connecting disc 31 and the output shaft I19 and the output shaft II 20 is realized.
It should be noted that, the above-mentioned groups of main driving teeth and speed adjusting teeth are not limited to the above-mentioned three groups, and the specific design number can be determined according to the type of accuracy of actually required speed adjustment, and detailed descriptions thereof are omitted here.
The working principle of the invention is as follows: at the idle position of the device, all driving parts, namely power elements, electric devices and an adaptive power supply, are connected through wires, the electric connection is completed between the electric devices in sequence, the detailed connection means is a well-known technology in the field, the following main description mainly describes the working principle and process, a single group of servo motors or double groups of servo motors are used as power sources according to the control requirement or the energy-saving requirement without explaining the electric control, then when the power is output, the driving parts are connected with an external equipment structure to be used through a constant speed shaft 28 and a variable speed shaft 29, when the driving parts operate, the driving parts are matched with a worm gear transmission structure to drive an output shaft I19 and an output shaft II 20 to rotate, then synchronously drive a variable speed shaft connecting cylinder 30 and a constant speed shaft connecting disc 31 connected with the driving parts to rotate, and when the constant speed shaft 28 is used for power output, the electric telescopic rod I38 is controlled to drive the start-stop push block 37 to move in the start-stop transmission cylinder rod 36, the telescopic positioning column 43 is controlled to be clamped with the positioning hole 42, so that the fixed-speed rotation or stop of the fixed-speed shaft 28 is realized, when the speed change shaft 29 is used for power output, the electric telescopic rod II 59 is controlled to drive the sliding sleeve to move along the connecting shaft 55, the proper main driving teeth I49 and the speed change teeth I52, the main driving teeth II 50 and the speed change teeth II 53 or the main driving teeth III 51 and the speed change teeth III 54 are selected to be meshed according to the requirement of the speed to be output, then the power output is carried out, namely the speed conversion under the condition of no stop is realized, namely the damage degree of the high-frequency start-stop and speed change of the speed reducer host 1 is reduced by utilizing the fixed-speed output unit and the speed change output unit, namely the automatic operation is realized at the same time, the speed change drive device has high safety and wide application range, strong controllability and the like.
While the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes may be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.