A synchronous control structure of differential double rack transmission

Abstract

The present invention relates to the technical field of differential double-rack transmission, and specifically to a synchronous control structure of differential double-rack transmission, comprising a first servo motor and a left transmission rod and a right transmission rod; the left transmission rod and the right transmission rod are distributed in a straight line; the output end of the first servo motor is provided with a rotating shaft; one end of the outer wall of the rotating shaft is fixedly connected with a first bevel gear; the outer side wall of the left transmission rod is provided with a planetary gear plate, and the planetary gear plate and the first bevel gear are meshed with each other; the present invention drives the first rotating shaft and the third bevel gear to rotate through a pair of second servo motors, so that the rotation of the third bevel gear drives the slide plate to move downward until it is clamped in a clamping groove on a pair of rack bodies, so that when the connecting plate rotates, the pair of slide plates drives the pair of rack bodies to rotate, reducing the pressure of the second bevel gear, reducing its wear, and increasing its service life, while also reducing the probability of failure due to severe wear of the second bevel gear.

Description

Technical Field

[0001] The present invention relates to the technical field of differential double rack transmission, in particular to a synchronous control structure of a differential double rack transmission. Background Art

[0002] The differential double rack transmission structure is a complex mechanical transmission device, which consists of two racks, one or more planetary gears, and other components for fixing and driving. It drives the planetary gears through external devices such as motors, so that the planetary gear set transmits the power of the servo motor to the racks on both sides through the revolution and rotation of the internal gears, and realizes differential control at the same time. Because of its high precision and ability to maintain stable transmission accuracy, it is widely used in automobiles and other equipment that requires precise control of the speed difference of the drive wheels on both sides.

[0003] In the prior art, when the planetary gear transmits the power of the servo motor to the racks on both sides through the revolution and rotation of the internal gear to achieve differential control, the racks on both sides are mostly driven to rotate by the teeth of the internal gear. When the racks on both sides rotate at the same time, they are mainly driven by the teeth of the internal gear, so that the teeth of the internal gear bear greater pressure, making the teeth of the internal gear easy to wear or damage, resulting in a reduction in its service life and an increase in its failure rate. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that when the planetary gear transmits the power of the servo motor to the racks on both sides to realize differential control through the revolution and rotation of the internal gear, the racks on both sides are mostly driven to rotate by the teeth of the internal gear. When the racks on both sides rotate at the same time, they are mainly driven by the teeth of the internal gear, so that the pressure on the teeth of the internal gear is relatively large, making the teeth of the internal gear easy to wear or damage, resulting in a reduction in its service life and an increase in its failure rate. A synchronous control structure of a differential double rack transmission is proposed.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A synchronous control structure of a differential double-rack transmission, comprising a first servo motor and a left transmission rod and a right transmission rod; the left transmission rod and the right transmission rod are distributed in a straight line; the output end of the first servo motor is provided with a rotating shaft; one end of the outer wall of the rotating shaft is fixedly connected to a first bevel gear; the outer wall of the left transmission rod is provided with a planetary gear plate, and the planetary gear plate and the first bevel gear are meshed with each other; the outer walls of the left transmission rod and the right transmission rod are fixedly connected to a rack body at opposite ends; a connecting plate is fixedly connected to one side of the outer wall of the planetary gear plate; the bottom end of the outer wall of the connecting plate is rotatably connected to a second bevel gear through a rotating rod, and the second bevel gear is connected to a pair of rack bodies meshing with each other; a pair of sliding grooves are provided at the top of the outer wall of the connecting plate; a pair of slide plates are slidably connected to the inner side walls of the sliding grooves; a pair of outer side walls of the rack bodies are provided with positioning grooves, and the pair of positioning grooves are matched with a pair of slide plates respectively; a group of tooth grooves are provided on one side of the outer wall of a pair of slide plates, and the two groups of tooth grooves are symmetrical about the center line of the second bevel gear; a pair of second servo motors are fixedly connected to the top of the outer wall of the connecting plate; a pair of first rotating shafts are provided at the output ends; a third bevel gear is fixedly connected to the opposite end of the outer wall of the first rotating shaft, and a pair of third bevel gears are respectively meshed with the two groups of tooth grooves.

[0007] As a preferred embodiment of the present invention, square through grooves are provided at the bottom ends of opposite sides of the outer wall of the skateboard; opposite sides of the inner walls of a pair of square through grooves are fixedly connected with limiting blocks by a first spring; limiting grooves are provided on opposite sides of the inner wall of the locking groove, and a pair of limiting grooves are respectively matched with a pair of limiting blocks.

[0008] As a preferred embodiment of the present invention, the vertical section of the limit groove is an isosceles trapezoidal shape; the cross-section of one end of the limit block located outside the square through groove is an isosceles trapezoidal shape, and the limit block matches the limit groove; the inclined surface of the limit block matches the locking groove; the outer side wall of the limit block is slidably connected to the inner side wall of the square through groove.

[0009] As a preferred embodiment of the present invention, the outer side walls of the left transmission rod and the right transmission rod are fixedly connected with auxiliary plates; a group of fixing grooves are opened on the opposite sides of the outer walls of a pair of auxiliary plates, and the two groups of fixing grooves are in a circular array; the top end of the outer wall of the connecting plate is fixedly connected with a square plate; the outer walls of the square plate are fixedly connected with fixing rods on opposite sides, and the fixing rods match the fixing grooves.

[0010] As a preferred embodiment of the present invention, the fixed rod includes a fixed shell and a moving rod; the outer side wall of the moving rod is slidably connected to the inner side wall of the fixed shell; the inner side wall of the fixed shell is provided with an adjustment plate; a second spring is fixedly connected to one side of the outer wall of the adjustment plate, and one end of the outer wall of the second spring is fixedly connected to one end of the outer wall of the moving rod; a linkage block is fixedly connected to one side of the outer wall of the moving rod, and the linkage block is in the shape of a right-angled trapezoid; an auxiliary block is fixedly connected to one side of the outer wall of the sliding plate, and the auxiliary block is in the shape of a right-angled trapezoid; the inclined surface of the auxiliary block contacts the inclined surface of the linkage block.

[0011] As a preferred embodiment of the present invention, a first through groove is provided on one side of the outer wall of the fixed shell; the outer wall of the adjustment plate is slidably connected to the first through groove and the inner wall of the fixed shell; one side of the outer wall of the fixed block is rotatably connected to a threaded rod through a first square plate, and one end of the outer wall of the threaded rod passes through the adjustment plate; the threaded rod is threadedly connected to the adjustment plate.

[0012] As a preferred embodiment of the present invention, a protective shell is provided at one end of the outer wall of the planetary gear plate; the protective shell is cylindrical; a fixing plate is fixedly connected to the outer wall of the protective shell; a group of bolts are threadedly connected to one side of the outer wall of the fixing plate, and one end of the outer wall of a group of bolts passes through the fixing plate; a group of thread grooves are opened at one end of the outer wall of the planetary gear plate, and a group of thread grooves are respectively matched with a group of bolts; the protective shell matches the right transmission rod.

[0013] As a preferred embodiment of the present invention, the protective shell includes a left half shell and a right half shell; connecting grooves are provided at both ends of the outer wall of the left half shell; connecting blocks are fixedly connected at both ends of the outer wall of the right half shell, and a pair of connecting blocks are respectively matched with a pair of connecting grooves; the protective shell is made of transparent material.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The outer side walls of the left transmission rod and the right transmission rod are fixedly connected with auxiliary plates, and the outer sides opposite to the outer wall of the square plate are fixedly connected with fixing rods, and the fixing rods are matched with the fixing grooves, so that when a pair of fixing blocks are inserted into the fixing grooves on the pair of auxiliary plates, the fixing rods can further reduce the pressure of the second bevel gear, so that when the left transmission rod and the right transmission rod rotate at the same speed, the device can be driven by the cooperation of the second bevel gear, the slide plate and the fixing rod, so that the pressure borne by each component is small under the cooperation of the second bevel gear, the slide plate and the fixing rod, so that each component is not easy to be damaged or worn seriously, so that the service life of the device is further improved, and the device is also safer and more reliable, and the device is not easy to cause the second bevel gear to be worn seriously, resulting in an increase in the failure rate.

[0016] 2. The fixed rod includes a fixed shell and a moving rod, so that when a pair of rack bodies need to perform differential rotation, the slide plate will move upward to contact the fixation of the pair of rack bodies. When the slide plate moves upward, the upward movement of the slide plate will drive the auxiliary block to move upward. When the auxiliary block moves upward, the inclined surface of the auxiliary block contacts the inclined surface of the linkage block, so that the upward movement of the auxiliary block will drive the linkage block to move horizontally, so that the linkage block drives the moving rod to move horizontally, disengage from the fixed groove, contact the fixation of the fixed rod and the auxiliary disk, so that the device can release the fixation of the fixed rod and the slide plate at the same time, and when the slide plate moves downward, the moving rod will reset under the elastic force of the second spring, so that the fixed rod and the slide plate fix the auxiliary disk and the rack body at the same time, so that the fixing and releasing operations of the fixed rod in the device are relatively convenient, simple and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0018] Figure 1 It is the main structure diagram of the present invention;

[0019] Figure 2 It is a partial structural diagram of the main body of the present invention;

[0020] Figure 3 It is an exploded structural diagram of the connecting plate, the second bevel gear and the rack body of the present invention;

[0021] Figure 4 It is a cross-sectional structural diagram of the rack body of the present invention;

[0022] Figure 5 It is an exploded structural diagram of the connecting plate and the sliding plate of the present invention;

[0023] Figure 6 It is an exploded structural diagram of the slide plate and the limit block of the present invention;

[0024] Figure 7 is a structural diagram of a fixing rod of the present invention;

[0025] Figure 8 It is an exploded structural diagram of the fixed shell and the movable rod of the present invention;

[0026] Fig. 9 It is an exploded structural diagram of the left half shell and the right half shell of the present invention;

[0027] Fig.10 The structural diagram of the left half shell of the present invention

[0028] In the figure: 1, first servo motor; 2, left transmission rod; 3, right transmission rod; 4, rotating shaft; 5, first bevel gear; 6, planetary gear plate; 7, rack body; 8, connecting plate; 9, second bevel gear; 10, sliding through groove; 11, slide plate; 12, positioning groove; 13, tooth groove; 14, second servo motor; 15, first rotating shaft; 16, third bevel gear; 17, square through groove; 18, limit block; 19, limit groove; 20, auxiliary plate; 21, fixed groove; 22, square plate; 23, fixed rod; 231, fixed shell; 232, moving rod; 24, adjusting plate; 25, linkage block; 26, auxiliary block; 27, first through groove; 28, threaded rod; 29, protective shell; 30, fixed plate; 31, bolt; 32, threaded groove; 291, left half shell; 292, right half shell; 33, connecting groove; 34, connecting block. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1:

[0031] See also Figure 1 - Figure 8As shown, a synchronous control structure of differential double rack transmission includes a first servo motor 1 and a left transmission rod 2 and a right transmission rod 3; the left transmission rod 2 and the right transmission rod 3 are distributed in a straight line; the output end of the first servo motor 1 is provided with a rotating shaft 4; one end of the outer wall of the rotating shaft 4 is fixedly connected to a first bevel gear 5; the outer wall of the left transmission rod 2 is provided with a planetary gear plate 6, and the planetary gear plate 6 and the first bevel gear 5 are meshed with each other; the outer walls of the left transmission rod 2 and the right transmission rod 3 are fixedly connected to a rack body 7 at one end; a connecting plate 8 is fixedly connected to one side of the outer wall of the planetary gear plate 6; the bottom end of the outer wall of the connecting plate 8 is rotatably connected to a second bevel gear 9 through a rotating rod, and the second bevel gear 9 is connected to a pair of The rack bodies 7 mesh with each other; a pair of sliding grooves 10 are provided at the top of the outer wall of the connecting plate 8; a pair of slide plates 11 are slidably connected to the inner side walls of the pair of sliding grooves 10; a pair of outer side walls of the rack bodies 7 are provided with a positioning groove 12, and a pair of positioning grooves 12 are matched with a pair of slide plates 11 respectively; a group of tooth grooves 13 are provided on one side of the outer wall of a pair of slide plates 11, and the two groups of tooth grooves 13 are symmetrical about the center line of the second bevel gear 9; a pair of second servo motors 14 are fixedly connected to the top of the outer wall of the connecting plate 8; a pair of first rotating shafts 15 are provided at the output ends; a third bevel gear 16 is fixedly connected to the opposite ends of the outer walls of the pair of first rotating shafts 15, and a pair of first The three-bevel gear 16 is respectively meshed with the two sets of tooth grooves 13, and the first servo motor 1 drives the rotating shaft 4 and the first bevel gear 5 to rotate, so that the first bevel gear 5 drives the planetary gear plate 6 to rotate, so that the planetary gear plate 6 drives the connecting plate 8 and the second bevel gear 9 to rotate, so that the second bevel gear 9 drives a pair of rack bodies 7 and the left transmission rod 2 and the right transmission rod 3 to rotate, so that the left transmission rod 2 and the right transmission rod 3 rotate at the same speed. When the second bevel gear 9 drives the pair of rack bodies 7 to rotate through the gear teeth, the first rotating shaft 15 and the third bevel gear 16 are driven to rotate through a pair of second servo motors 14. Because the pair of third bevel gears 16 are respectively meshed with the two sets of tooth grooves 13, a pair of The rotation of the third bevel gear 16 drives the pair of slides 11 to move downward until they are stuck in the locking grooves 12 on the pair of rack bodies 7. Therefore, when the connecting plate 8 rotates, the pair of slides 11 will drive the pair of rack bodies 7 to rotate, thereby reducing the pressure on the second bevel gear 9, thereby reducing its wear and tear, increasing its service life, and also reducing the probability of failure due to severe wear of the second bevel gear 9. When the pair of rack bodies 7 need to perform differential rotation, the second servo motor 14 mostly reverses the third bevel gear 16, so that the slide 11 moves up and disengages from the locking grooves 12, so that the slide 11 will not affect the differential rotation of the pair of rack bodies 7.

[0032] The outer side walls of the left transmission rod 2 and the right transmission rod 3 are fixedly connected with auxiliary plates 20; a group of fixing grooves 21 are opened on the opposite sides of the outer walls of the pair of auxiliary plates 20, and the two groups of fixing grooves 21 are in a circumferential array; the top of the outer wall of the connecting plate 8 is fixedly connected with a square plate 22; the outer walls of the square plate 22 are fixedly connected with fixing rods 23 on the opposite sides, and the fixing rods 23 match the fixing grooves 21, and the pair of fixing blocks are clamped into the pair of auxiliary plates 20 by fixing the outer side walls of the left transmission rod 2 and the right transmission rod 3 with the auxiliary plates 20, and the outer walls of the square plate 22 are fixedly connected with fixing rods 23 on the opposite sides, and the fixing rods 23 match the fixing grooves 21. When the left transmission rod 2 and the right transmission rod 3 are rotated at the same speed, the second bevel gear 9, the slide plate 11 and the fixed rod 23 can be used to drive the device. When the left transmission rod 2 and the right transmission rod 3 are in the fixed groove 21, the fixed rod 23 can further reduce the pressure of the second bevel gear 9, so that when the left transmission rod 2 and the right transmission rod 3 rotate at the same speed, the second bevel gear 9, the slide plate 11 and the fixed rod 23 cooperate with each other, and the pressure borne by each component is small, so that each component is not easy to be damaged or worn seriously, so that the service life of the device is further improved, and the device is safer and more reliable, and the device is not easy to cause the second bevel gear 9 to be worn seriously, resulting in an increase in the failure rate.

[0033] A square through groove 17 is provided at the bottom ends of the opposite sides of the outer wall of the slide plate 11; the opposite sides of the inner walls of a pair of square through grooves 17 are fixedly connected to a limiting block 18 by a first spring; limiting grooves 19 are provided on the opposite sides of the inner wall of the locking groove 12, and a pair of limiting grooves 19 are matched with a pair of limiting blocks 18 respectively. When the slide plate 11 is inserted into the locking groove 12 on the rack body 7, the limiting block 18 on the slide plate 11 will also enter the locking groove 12. When the limiting block 18 enters the locking groove 12, the limiting block 18 will enter the limiting groove 19 in the locking groove 12 under the elastic force of the first spring, so that when the slide plate 11 is inserted into the locking groove 12 on the rack body 7, the limiting block 18 will increase the contact area between the slide plate 11 and the rack body 7, so that the slide plate 11 and the rack body 7 are more stable during movement, and the pressure of the slide plate 11 will also be shared by the limiting block 18, thereby reducing the pressure of the slide plate 11.

[0034] The fixed rod 23 includes a fixed shell 231 and a moving rod 232; the outer side wall of the moving rod 232 is slidably connected to the inner side wall of the fixed shell 231; the inner side wall of the fixed shell 231 is provided with an adjusting plate 24; a second spring is fixedly connected to one side of the outer wall of the adjusting plate 24, and one end of the outer wall of the second spring is fixedly connected to one end of the outer wall of the moving rod 232; a linkage block 25 is fixedly connected to one side of the outer wall of the moving rod 232, and the linkage block 25 is in the shape of a right-angled trapezoid; an auxiliary block 26 is fixedly connected to one side of the outer wall of the slide plate 11, and the auxiliary block 26 is in the shape of a right-angled trapezoid; the inclined surface of the auxiliary block 26 contacts the inclined surface of the linkage block 25, and the fixed rod 23 includes the fixed shell 231 and the moving rod 232, so that when a pair of rack bodies 7 need to be rotated differentially, the slide plate 11 will move upward to contact the fixation of the pair of rack bodies 7, and when the slide plate 11 moves upward When moving, the upward movement of the slide plate 11 will drive the auxiliary block 26 to move upward. When the auxiliary block 26 moves upward, the inclined surface of the auxiliary block 26 contacts the inclined surface of the linkage block 25, so that the upward movement of the auxiliary block 26 will drive the linkage block 25 to move horizontally, so that the linkage block 25 drives the moving rod 232 to move horizontally, disengage from the fixing groove 21, and contact the fixing rod 23 and the auxiliary disk 20, so that the device can release the fixing of the fixing rod 23 and the slide plate 11 at the same time, and when the slide plate 11 moves downward, the moving rod 232 will reset under the elastic force of the second spring, so that the fixing rod 23 and the slide plate 11 fix the auxiliary disk 20 and the rack body 7 at the same time, so that the fixing and releasing operations of the fixing rod 23 in the device are relatively convenient, simple, and quick, and the operation of the device is also more flexible and practical.

[0035] The vertical section of the limiting groove 19 is in the shape of an isosceles trapezoid; the cross section of the end of the limiting block 18 located outside the square through groove 17 is in the shape of an isosceles trapezoid, and the limiting block 18 matches the limiting groove 19; the inclined surface of the limiting block 18 matches the positioning groove 12; the outer wall of the limiting block 18 is slidably connected to the inner wall of the square through groove 17, and the cross section of the end of the limiting block 18 located outside the square through groove 17 is in the shape of an isosceles trapezoid, so that when the limiting block 18 encounters the rack body 7 as the slide plate 11 moves downward, the inclined surface of the limiting block 18 will encounter the edge of the positioning groove 12 on the rack body 7, and when the slide plate 11 continues to move downward, the limiting block 18 The inclined surface of the limit block 18 will be subjected to pressure, thereby driving the first spring to contract. When the slide plate 11 moves to a certain position, the limit block 18 will pop out under the elastic force of the first spring and be stuck in the limit groove 19. When the slide plate 11 moves upward, the inclined surface of the limit block 18 will contact the inclined surface of the limit groove 19. Under the action of the upward force of the slide plate 11, the limit block 18 will also contract, so that when the limit block 18 is stuck in and out of the limit groove 19, the overall structure of the limit block 18 and the limit groove 19 makes the insertion and disengagement operations of the limit block 18 more convenient and does not require manual assistance, so it is more flexible and more practical.

[0036] A first through slot 27 is provided on one side of the outer wall of the fixed shell 231; the outer side wall of the adjusting plate 24 is slidably connected to the first through slot 27 and the inner side wall of the fixed shell 231; a threaded rod 28 is rotatably connected to one side of the outer wall of the fixed block through the first square plate, and one end of the outer wall of the threaded rod 28 passes through the adjusting plate 24; the threaded rod 28 is threadedly connected to the adjusting plate 24, and by rotating the threaded rod 28, since the threaded rod 28 is threadedly connected to the adjusting plate 24, the rotation of the threaded rod 28 can drive the adjusting plate 24 to move in the fixed shell 231, and the movement of the adjusting plate 24 will drive the second spring and the moving rod 232 to move, so that the device can adjust the elastic force of the second spring and the extension distance of the moving rod 232 by moving the threaded rod 28, so that when the elastic force of the second spring is reduced, the moving rod 232 can still be inserted into the fixed slot 21 through the rotation of the threaded rod 28, thereby increasing the service life of the device.

[0037] Embodiment 2:

[0038] See also Figure 1 and Fig. 9 - Fig.10 As shown, a protective shell 29 is provided at one end of the outer wall of the planetary gear plate 6; the protective shell 29 is cylindrical; a fixing plate 30 is fixedly connected to the outer wall of the protective shell 29; a group of bolts 31 are threadedly connected to one side of the outer wall of the fixing plate 30, and one end of the outer wall of the group of bolts 31 passes through the fixing plate 30; a group of thread grooves 32 are opened at one end of the outer wall of the planetary gear plate 6, and a group of thread grooves 32 are respectively matched with a group of bolts 31; the protective shell 29 is matched with the right transmission rod 3, and the bolts 31 on the fixing plate 30 on the protective shell 29 are aligned with the thread grooves 32 on the planetary gear plate 6, and then the bolts 31 are rotated to make a group of bolts 31 rotate and snap into the thread grooves 32. At this time, the protective shell 29 is fixed to the planetary gear plate 6, so that each component in the device is protected therein by the protective shell 29, so that the protective shell 29 includes each component, so that each component is not easily affected by the external environment, so that the device is not easily affected by the external environment in various environments, so that the device is more practical and the failure rate of the device is further reduced.

[0039] The protective shell 29 includes a left half shell 291 and a right half shell 292; both ends of the outer wall of the left half shell 291 are provided with connecting grooves 33; both ends of the outer wall of the right half shell 292 are fixedly connected with connecting blocks 34, and a pair of connecting blocks 34 are matched with a pair of connecting grooves 33 respectively; the protective shell 29 is made of transparent material, and the protective shell 29 includes a left half shell 291 and a right half shell 292, so that when the protective shell 29 is installed, the connecting block 34 on the right half shell 292 is first aligned with the connecting groove 33 on the left half shell 291, so that the left half shell 291 and the right half shell 292 are combined, and then a set of bolts 31 are turned. , fix the left half shell 291 and the right half shell 292. At this time, the installation of the protective shell 29 is completed. When the protective shell 29 needs to be disassembled, only one set of bolts 31 needs to be reversed to move the bolts 31 out of the threaded groove 32 to release the fixation, and the protective shell 29 can be disassembled, thereby making the disassembly and installation of the protective shell 29 more convenient, simple and quick. In addition, because the protective shell 29 is made of transparent material, the staff can also observe the situation inside the protective shell 29 through the protective shell 29 without disassembling the protective shell 29, so that when the staff needs to observe whether the device has a fault, it is more convenient.

[0040] When the present invention is in use, the first servo motor 1 drives the rotating shaft 4 and the first bevel gear 5 to rotate, so that the first bevel gear 5 drives the planetary gear plate 6 to rotate, so that the planetary gear plate 6 drives the connecting plate 8 and the second bevel gear 9 to rotate, so that the second bevel gear 9 drives a pair of rack bodies 7 and the left transmission rod 2 and the right transmission rod 3 to rotate, so that the left transmission rod 2 and the right transmission rod 3 rotate at the same speed. When the second bevel gear 9 drives the pair of rack bodies 7 to rotate through the gear teeth, the first rotating shaft 15 and the third bevel gear 16 are driven to rotate through the pair of second servo motors 14. Because the pair of third bevel gears 16 are respectively meshed with the two groups of tooth grooves 13, the rotation of the pair of third bevel gears 16 drives the pair of slide plates 11 to move downward until they are stuck in the positioning grooves 12 on the pair of rack bodies 7. , so that when the connecting plate 8 rotates, a pair of slide plates 11 will drive a pair of rack bodies 7 to rotate, thereby reducing the pressure of the second bevel gear 9, thereby reducing its wear and increasing its service life. At the same time, the probability of failure caused by severe wear of the second bevel gear 9 is reduced. When the pair of rack bodies 7 need to rotate differentially, the second servo motor 14 mostly reverses the third bevel gear 16 to move the slide plate 11 up and disengage from the positioning groove 12, so that the slide plate 11 will not affect the differential rotation of the pair of rack bodies 7, and when the slide plate 11 is stuck in the positioning groove 12 on the rack body 7, the limit block 18 on the slide plate 11 will also enter the positioning groove 12. When the limit block 18 enters the positioning groove 12, the limit block 18 will be in the first spring When the slide plate 11 enters the limiting groove 19 in the positioning groove 12 under the action of elastic force, so that the slide plate 11 is clamped in the positioning groove 12 on the rack body 7, the limiting block 18 increases the contact area between the slide plate 11 and the rack body 7, so that the slide plate 11 and the rack body 7 are more stable during movement, and the pressure of the slide plate 11 will also be shared by the limiting block 18, thereby reducing the pressure of the slide plate 11, and the cross-section of one end of the limiting block 18 located outside the square through groove 17 is in the shape of an isosceles trapezoid, so that when the limit block 18 encounters the rack body 7 as the slide plate 11 moves downward, the inclined surface of the limiting block 18 will encounter the edge of the positioning groove 12 on the rack body 7, and when the slide plate 11 continues to move downward, the inclined surface of the limiting block 18 will be subjected to pressure, thereby driving the first spring to contract. When the slide plate 11 moves to a certain position, the limit block 18 will pop out under the elastic force of the first spring and get stuck in the limit groove 19, and when the slide plate 11 moves up, the inclined surface of the limit block 18 will contact the inclined surface of the limit groove 19, and under the action of the upward force of the slide plate 11, the limit block 18 will also shrink, so that when the limit block 18 is stuck in and out of the limit groove 19, the overall structure of the limit block 18 and the limit groove 19 makes the insertion and disengagement operations of the limit block 18 more convenient and no manual assistance is required, so it is more flexible and more practical, and the outer side walls of the left transmission rod 2 and the right transmission rod 3 are fixedly connected with the auxiliary plate 20, and the outer sides opposite to the outer wall of the square plate 22 are fixedly connected with the fixing rod 23, and the fixing rod 23 matches the fixing groove 21,When a pair of fixing blocks are inserted into the fixing grooves 21 on a pair of auxiliary disks 20, the fixing rod 23 can further reduce the pressure of the second bevel gear 9, so that when the left transmission rod 2 and the right transmission rod 3 rotate at the same speed, the device can be driven by the cooperation of the second bevel gear 9, the slide plate 11 and the fixing rod 23, so that the pressure borne by each component is small under the cooperation of the second bevel gear 9, the slide plate 11 and the fixing rod 23, so that each component is not easy to be damaged or worn seriously, so that the service life of the device is further improved, and the device is safer and more reliable, and the device is not easy to cause the second bevel gear 9 to be worn seriously, resulting in an increase in the failure rate, and the fixing rod 23 includes a fixing shell 231 and a moving rod 232, so that a pair of racks When the body 7 needs to perform differential rotation, the slide plate 11 will move upward to contact the fixation of a pair of rack bodies 7. When the slide plate 11 moves upward, the upward movement of the slide plate 11 will drive the auxiliary block 26 to move upward. When the auxiliary block 26 moves upward, the inclined surface of the auxiliary block 26 contacts the inclined surface of the linkage block 25, so that the upward movement of the auxiliary block 26 will drive the linkage block 25 to move horizontally, so that the linkage block 25 drives the moving rod 232 to move horizontally, disengage from the fixing groove 21, and contact the fixing rod 23 and the auxiliary disk 20, so that the device can release the fixing of the fixing rod 23 and the slide plate 11 at the same time. When the slide plate 11 moves downward, the moving rod 232 will reset under the elastic force of the second spring, so that the fixing rod 23 and the slide plate 11 can simultaneously contact the auxiliary disk 20 and the rack body 7 are fixed, so that the fixing and releasing operations of the fixing rod 23 in the device are relatively convenient, simple, and quick, and the operation of the device is also more flexible and practical. By rotating the threaded rod 28, since the threaded rod 28 is threadedly connected with the adjusting plate 24, the rotation of the threaded rod 28 can drive the adjusting plate 24 to move in the fixed shell 231, and the movement of the adjusting plate 24 will drive the second spring and the moving rod 232 to move, so that the device can adjust the elastic force of the second spring and the extension distance of the moving rod 232 by the movement of the threaded rod 28. When the elastic force of the second spring is reduced, the moving rod 232 can still be stuck in the fixing groove 21 by the rotation of the threaded rod 28, so that the service life of the device is increased, and By aligning the bolts 31 on the fixing plate 30 on the protective shell 29 with the threaded grooves 32 on the planetary gear plate 6, and rotating the bolts 31, a group of bolts 31 are rotated and clamped into the threaded grooves 32. At this time, the protective shell 29 is fixed to the planetary gear plate 6, so that each component in the device is protected by the protective shell 29, so that the protective shell 29 includes each component, so that each component is not easily affected by the external environment, so that the device is not easily affected by the external environment in various environments, so that the device is more practical, and the failure rate of the device is further reduced. In addition, the protective shell 29 includes a left half shell 291 and a right half shell 292. When the protective shell 29 is installed, first align the connecting block 34 on the right half shell 292 with the connecting groove 33 on the left half shell 291,The left half shell 291 and the right half shell 292 are combined, and then a set of bolts 31 are turned to fix the left half shell 291 and the right half shell 292. At this time, the installation of the protective shell 29 is completed. When the protective shell 29 needs to be disassembled, only one set of bolts 31 needs to be reversed to move the bolts 31 out of the thread groove 32 to release the fixation, and then the protective shell 29 can be disassembled, so that the disassembly and installation of the protective shell 29 are more convenient, simple and quick. In addition, the protective shell 29 is made of a transparent material, so that the protective shell 29 can be observed through the protective shell 29 without disassembling it, so that when the staff needs to observe whether the device has a fault, it is more convenient.

[0041] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A synchronous control structure of differential double rack transmission, comprising a first servo motor (1) and a left transmission rod (2) and a right transmission rod (3); the left transmission rod (2) and the right transmission rod (3) are distributed in a straight line; the output end of the first servo motor (1) is provided with a rotating shaft (4); one end of the outer wall of the rotating shaft (4) is fixedly connected to a first bevel gear (5); the outer wall of the left transmission rod (2) is provided with a planetary gear plate (6), and the planetary gear plate (6) and the first bevel gear (5) are meshed with each other; the outer walls of the left transmission rod (2) and the right transmission rod (3) are fixedly connected to a rack body (7) at opposite ends; one side of the outer wall of the planetary gear plate (6) is fixedly connected to a connecting plate (8); the bottom end of the outer wall of the connecting plate (8) is rotatably connected to a second bevel gear (9) through a rotating rod, and the second bevel gear (9) and a pair of rack bodies (7) are meshed with each other; characterized in that A pair of sliding grooves (10) are provided at the top of the outer wall of the connecting plate (8); the inner side walls of the pair of sliding grooves (10) are slidably connected to a slide plate (11); the outer side walls of the pair of rack bodies (7) are provided with a positioning groove (12), and the pair of positioning grooves (12) are matched with the pair of slide plates (11) respectively; a group of tooth grooves (13) are provided on one side of the outer wall of the pair of slide plates (11), and the two groups of tooth grooves (13) are symmetrical about the center line of the second bevel gear (9); a pair of second servo motors (14) are fixedly connected to the top of the outer wall of the connecting plate (8); the output ends of the pair of second servo motors (14) are provided with a first rotating shaft (15); the opposite ends of the outer walls of the pair of first rotating shafts (15) are fixedly connected to a third bevel gear (16), and the pair of third bevel gears (16) are respectively meshed with the two groups of tooth grooves (13).

2. A synchronous control structure of a differential double rack transmission according to claim 1, characterized in that: The bottom ends of the outer wall of the slide plate (11) are provided with square through grooves (17); the inner walls of a pair of the square through grooves (17) are fixedly connected to limiting blocks (18) on opposite sides via a first spring; and the inner walls of the locking groove (12) are provided with limiting grooves (19) on opposite sides, and the pair of limiting grooves (19) are matched with the pair of limiting blocks (18) respectively.

3. A synchronous control structure of a differential double rack transmission according to claim 2, characterized in that: The vertical section of the limiting groove (19) is in the shape of an isosceles trapezoid; the cross section of one end of the limiting block (18) located outside the square through groove (17) is in the shape of an isosceles trapezoid, and the limiting block (18) matches the limiting groove (19); the inclined surface of the limiting block (18) matches the locking groove (12); the outer side wall of the limiting block (18) is slidably connected to the inner side wall of the square through groove (17).

4. A synchronous control structure of a differential double rack transmission according to claim 3, characterized in that: The outer side walls of the left transmission rod (2) and the right transmission rod (3) are both fixedly connected to auxiliary plates (20); a group of fixing grooves (21) are opened on opposite sides of the outer walls of a pair of auxiliary plates (20), and the two groups of fixing grooves (21) are in a circular array; the top end of the outer wall of the connecting plate (8) is fixedly connected to a square plate (22); the outer wall of the square plate (22) is fixedly connected to fixing rods (23) on opposite sides, and the fixing rods (23) match the fixing grooves (21).

5. The synchronous control structure of a differential double rack transmission according to claim 4, characterized in that: The fixed rod (23) comprises a fixed shell (231) and a movable rod (232); the outer wall of the movable rod (232) is slidably connected to the inner wall of the fixed shell (231); the inner wall of the fixed shell (231) is provided with an adjustment plate (24); a second spring is fixedly connected to one side of the outer wall of the adjustment plate (24), and one end of the outer wall of the second spring is fixedly connected to one end of the outer wall of the movable rod (232); a linkage block (25) is fixedly connected to one side of the outer wall of the movable rod (232), and the linkage block (25) is in the shape of a right-angled trapezoid; an auxiliary block (26) is fixedly connected to one side of the outer wall of the slide plate (11), and the auxiliary block (26) is in the shape of a right-angled trapezoid; the inclined surface of the auxiliary block (26) contacts the inclined surface of the linkage block (25).

6. A synchronous control structure of a differential double rack transmission according to claim 5, characterized in that: A first through groove (27) is formed on one side of the outer wall of the fixed shell (231); the outer wall of the adjustment plate (24) is slidably connected to the first through groove (27) and the inner wall of the fixed shell (231); a threaded rod (28) is rotatably connected to one side of the outer wall of the fixed block via a first square plate, and one end of the outer wall of the threaded rod (28) passes through the adjustment plate (24); the threaded rod (28) is threadedly connected to the adjustment plate (24).

7. The synchronous control structure of a differential double rack transmission according to claim 1, characterized in that: A protective shell (29) is provided at one end of the outer wall of the planetary gear plate (6); the protective shell (29) is cylindrical; a fixing plate (30) is fixedly connected to the outer wall of the protective shell (29); a group of bolts (31) are threadedly connected to one side of the outer wall of the fixing plate (30), and one end of the outer wall of the group of bolts (31) passes through the fixing plate (30); a group of thread grooves (32) are opened at one end of the outer wall of the planetary gear plate (6), and the group of thread grooves (32) are matched with the group of bolts (31) respectively; the protective shell (29) is matched with the right transmission rod (3).

8. The synchronous control structure of a differential double rack transmission according to claim 7, characterized in that: The protective shell (29) comprises a left half shell (291) and a right half shell (292); both ends of the outer wall of the left half shell (291) are provided with connection grooves (33); both ends of the outer wall of the right half shell (292) are fixedly connected with connection blocks (34), and a pair of connection blocks (34) are respectively matched with a pair of connection grooves (33); the protective shell (29) is made of a transparent material.

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