Online differential adjustment device and transmission system

Abstract

The invention provides an online differential adjustment device and a transmission system, and relates to the technical field of transmission systems for conveying equipment. The online differential adjustment device comprises a transmission mechanism and an adjustment mechanism; the transmission mechanism comprises a first bevel gear, a second bevel gear and a third bevel gear, the gear shaft of the first bevel gear is coaxial with the third bevel gear and the two are arranged oppositely with an interval; the second bevel gear comprises two oppositely arranged second bevel gears, the two second bevel gears are arranged oppositely with an interval and coaxially; the second bevel gear is arranged between the first bevel gear and the second bevel gear, a driving shaft is connected between the two second bevel gears, and the second bevel gear can rotate relative to the driving shaft; the adjustment mechanism comprises a locking member and an adjustment member; the speed difference of the transmission system of the two conveying mechanisms can be adjusted online, no shutdown is required, less time is required, production efficiency is improved, operation is convenient, the differential adjustment range is large, and the adjustment accuracy is high.

Description

Technical Field

[0001] The present invention relates to the technical field of transmission systems of conveying equipment, and in particular to an online differential speed adjustment device and a transmission system. Background Art

[0002] For segmented transmissions with longer transmission chains, when the speed ratio is constant, small errors in the transmission system often accumulate over time and exceed the technical requirements, causing phase shifts in components with fixed relative phases, affecting the normal operation of the entire machine or affecting product quality.

[0003] For example, when two conveying mechanisms are used to transport two parts that need to be docked, the two conveying mechanisms are driven by a transmission system respectively. At the beginning, the two transmission mechanisms drive the two conveying mechanisms to move respectively, and simultaneously transport the two parts to the docking operation station, so that the two parts can be docked accurately; however, as the operation time increases, the small errors of the transmission systems corresponding to the two conveying mechanisms will gradually accumulate and amplify, resulting in the synchronization of the two conveying mechanisms failing to meet the use requirements. At this time, it is often necessary to adjust the differential speed of the transmission systems of the two conveying mechanisms before the operation can be carried out.

[0004] The differential adjustment form of the existing transmission system is one of shutdown adjustment, which wastes a lot of time and affects production efficiency. The other is online adjustment, that is, non-stop adjustment, specifically changing the position of the differential adjustment wheel to change the transmission ratio, such as the patent application number CN201020569137.6, entitled "Glass Tempering Furnace Main Furnace Differential Wheel Mechanism". The disadvantages of this method are complex structure, small adjustable differential range, and low operating accuracy. Summary of the invention

[0005] The object of the present invention is to provide an online differential speed adjustment device to solve the problem in the prior art that when adjusting the differential speed of a transmission system online, the adjustable differential speed range is small.

[0006] Another object of the present invention is to provide a transmission system to solve the problem in the prior art that when the differential speed of the transmission system is adjusted online, the adjustable differential speed range is small.

[0007] The online differential speed adjustment device provided by the present invention comprises a transmission mechanism and an adjustment mechanism;

[0008] The transmission mechanism comprises a first bevel gear, a second bevel gear and a third bevel gear, wherein the first bevel gear is coaxial with the third bevel gear and the two are arranged opposite to each other with an interval;

[0009] The second bevel gears include two oppositely arranged second bevel gears, the two second bevel gears are coaxial and relatively spaced apart; the second bevel gear is arranged between the first bevel gear and the second bevel gear 36, and the second bevel gear is meshed and connected with the first bevel gear and the third bevel gear respectively; a driving shaft is connected between the two second bevel gears, and the second bevel gear can rotate relative to the driving shaft;

[0010] The adjusting mechanism comprises a locking member and an adjusting member, wherein the locking member and the adjusting member are respectively connected to the third bevel gear, the locking member is used to switch the third bevel gear between a rotatable state and a locked state, and the adjusting member is used to apply a force to the third bevel gear to drive the third bevel gear to rotate when the third bevel gear is in the rotatable state;

[0011] The first bevel gear is a power input end, and the drive shaft is a power output end; or, the drive shaft is a power input end, and the first bevel gear is a power output end.

[0012] Furthermore, the module and the number of teeth of the first bevel gear are the same as the module and the number of teeth of the third bevel gear, and the module and the number of teeth of the two second bevel gears are the same.

[0013] Further, the module and the number of teeth of the first bevel gear, the module and the number of teeth of the second bevel gear, and the module and the number of teeth of the third bevel gear are all the same.

[0014] Furthermore, an output shaft is connected to the center of the driving shaft, the output shaft is arranged perpendicular to the driving shaft, and the output shaft is arranged coaxially with the third bevel gear.

[0015] Furthermore, the locking member includes a worm wheel, a worm and a fastener, the worm is connected to the worm wheel, the worm wheel is fixedly connected to the third bevel gear, and the fastener is used to fix the worm.

[0016] Furthermore, the online differential adjustment device also includes a housing, the transmission mechanism, the worm wheel and the worm are arranged in the housing, the fastener is fixed on the housing, and the fastener can fix the worm relative to the housing.

[0017] Furthermore, one end of the worm away from the worm wheel is connected to an auxiliary shaft, and the fastener is used to be connected to the auxiliary shaft.

[0018] Furthermore, the auxiliary shaft passes through the box body, and the fastener is fixed on the outer side wall of the box body.

[0019] Furthermore, the adjusting member is a hand wheel, and the hand wheel is fixedly connected to the worm.

[0020] The transmission system provided by the present invention comprises the online differential adjustment device provided by the present invention.

[0021] The online differential adjustment device provided by the present invention can connect the gear shaft of the first bevel gear to the power input mechanism when in use, and the drive shaft is the power output end, which is connected to the component to be driven; or the drive shaft can be connected to the power input mechanism, and the first bevel gear is the power output end, which is connected to the component to be driven. Taking the first bevel gear as the power input end and the drive shaft as the power output end as an example, when the locking member of the adjustment mechanism limits the third bevel gear to a locked state, the transmission ratio of the first bevel gear to the second bevel gear is determined, and the first bevel gear can drive the second bevel gear to rotate and revolve relative to the third bevel gear. Since the second bevel gear can rotate relative to the drive shaft, the second bevel gear can only drive the drive shaft to revolve relative to the third bevel gear, that is, the drive shaft rotates with the same axis as the axial extension direction of the gear shaft of the third bevel gear, and the output speed of the drive shaft is controlled by the revolving speed of the second bevel gear relative to the third bevel gear. When the speed difference needs to be adjusted, that is, when the output speed of the transmission system including the online differential adjustment device needs to be adjusted, the locking member limits the third bevel gear to a self-rotating state. At this time, the adjusting member applies a self-rotating force to the third bevel gear, thereby changing the rotation speed of the third bevel gear relative to the second bevel gear, that is, changing the speed of the revolution of the second bevel gear relative to the third bevel gear, thereby achieving the purpose of adjusting the output speed of the drive shaft.

[0022] The online differential speed adjustment device of the present invention can adjust the differential speed of the transmission system of two conveying mechanisms online by adjusting the output speed of the driving shaft, without stopping the machine, requiring less time, and improving production efficiency; at the same time, the differential speed is adjusted by the third bevel gear, which is easy to operate, has a large differential speed adjustment range, and has high adjustment accuracy.

[0023] The transmission system provided by the present invention includes the online differential adjustment device provided by the present invention, and has the same beneficial effects as the online differential adjustment device provided by the present invention. For details, please refer to the description of the effects of the online differential adjustment device, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of one direction of an online differential speed adjustment device provided by an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of another direction of the online differential speed adjustment device provided by an embodiment of the present invention;

[0027] Figure 3 A schematic diagram showing the rotation direction of an online differential speed adjustment device provided in an embodiment of the present invention.

[0028] Icons: 1-power output transmission assembly; 2-power input transmission assembly; 3-housing; 4-first bevel gear; 5-second bevel gear; 6-third bevel gear; 7-worm; 8-worm wheel; 9-fastener; 10-handwheel; 11-auxiliary shaft; 12-drive shaft; 13-connecting shaft. 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 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] like Figure 1 to Figure 3 As shown, this embodiment provides an online differential adjustment device, including a transmission mechanism and an adjustment mechanism.

[0031] The transmission mechanism includes a first bevel gear 4, a second bevel gear 5 and a third bevel gear 6. The gear shaft of the first bevel gear 4 and the gear shaft of the third bevel gear 6 have the same axial direction, and the two are arranged oppositely at intervals. The second bevel gear 5 includes two oppositely arranged second bevel gears 5, and the two second bevel gears 5 are arranged oppositely at intervals, and the gear shafts are arranged coaxially. The second bevel gear 5 is arranged between the first bevel gear 4 and the third bevel gear 6, and the second bevel gear 5 is meshed and connected with the first bevel gear 4 and the third bevel gear 6 respectively; a driving shaft 12 is connected between the two second bevel gears 5, and the second bevel gear 5 can rotate relative to the driving shaft 12. The adjustment mechanism includes a locking member and an adjusting member, and the locking member and the adjusting member are respectively connected to the third bevel gear 6. The locking member is used to switch the third bevel gear 6 between a rotatable state and a locked state. The adjusting member is used to apply a force to the third bevel gear 6 to drive the third bevel gear 6 to rotate when the third bevel gear 6 is in a rotatable state.

[0032] Among them, the first bevel gear 4 is the power input end, and the drive shaft 12 is the power output end; or, the drive shaft 12 is the power input end, and the gear shaft of the first bevel gear 4 is the power output end. That is, when the online differential adjustment device of this embodiment is in use, the gear shaft of the first bevel gear 4 can be connected to the power input mechanism, such as the power input transmission assembly 2 (sprocket, pulley, gear, etc.). At this time, the drive shaft 12 is the power output end, connected to the component to be driven. Specifically, the drive shaft 12 can be connected to the component to be driven through the power output transmission assembly 1, such as a sprocket, pulley, gear, etc. Alternatively, the drive shaft 12 can also be connected to the power input mechanism. At this time, the gear shaft of the first bevel gear 4 is the power output end, connected to the component to be driven.

[0033] It should be noted that the second bevel gear 5 can rotate relative to the drive shaft 12 , that is, the drive shaft 12 does not rotate with the second bevel gear 5 , but the drive shaft 12 will revolve along the third bevel gear 6 together with the second bevel gear 5 .

[0034] Taking the gear shaft of the first bevel gear 4 as the power input end and the drive shaft 12 as the power output end as an example, when the locking piece of the adjusting mechanism limits the third bevel gear 6 to a locked state, the transmission ratio of the first bevel gear 4 and the second bevel gear 5 is determined, and the first bevel gear 4 can drive the second bevel gear 5 to rotate and revolve relative to the third bevel gear 6. Since the second bevel gear 5 can rotate relative to the drive shaft 12, the second bevel gear 5 can only drive the drive shaft 12 to revolve relative to the third bevel gear 6, that is, the drive shaft 12 rotates with the same axis as the axial extension direction of the gear shaft of the third bevel gear 6, and the output speed of the drive shaft 12 is controlled by the revolution speed of the second bevel gear 5 relative to the third bevel gear 6. When the speed difference needs to be adjusted, that is, when the output speed of the transmission system including the online differential adjustment device needs to be adjusted, the locking member limits the third bevel gear 6 to a self-rotating state. At this time, the adjusting member applies a self-rotating force to the third bevel gear 6, thereby changing the rotation speed of the third bevel gear 6 relative to the second bevel gear 5, that is, changing the speed of the revolution of the second bevel gear 5 relative to the third bevel gear 6, thereby achieving the purpose of adjusting the output speed of the drive shaft 12.

[0035] The online differential speed adjustment device of this embodiment can adjust the differential speed of the transmission system of the two conveying mechanisms online by adjusting the output speed of the drive shaft 12. Specifically, the online differential speed adjustment device of this embodiment can be installed in the transmission system of one of the conveying mechanisms, and then the speed ratio of the transmission system installed with the online differential speed adjustment device can be adjusted to achieve the speed difference adjustment of the two transmission systems. No shutdown is required, less time is required, and production efficiency is improved; at the same time, the differential speed is adjusted by the third bevel gear 6, which is easy to operate, has a large differential speed adjustment range, and high adjustment accuracy.

[0036] Specifically, when the locking member limits the third bevel gear 6 to a rotatable state, the adjusting member applies a force to the third bevel gear 6, so that when the third bevel gear 6 rotates in the same direction as the first bevel gear 4, the orbital speed of the second bevel gear 5 relative to the third bevel gear 6 is reduced, thereby reducing the rotation speed of the drive shaft 12 and reducing the transmission speed ratio; when the adjusting member applies a force to the third bevel gear 6, so that the third bevel gear 6 rotates in opposite directions to the first bevel gear 4, the orbital speed of the second bevel gear 5 relative to the third bevel gear 6 is accelerated, thereby accelerating the rotation speed of the drive shaft 12 and increasing the transmission speed ratio.

[0037] Specifically, in this embodiment, the first bevel gear 4 and the third bevel gear 6 have the same module and number of teeth to facilitate the arrangement of the second bevel gear 5. The two second bevel gears 5 have the same module and number of teeth to ensure that the drive shaft 12 rotates smoothly.

[0038] In a preferred embodiment, the first bevel gear 4, the second bevel gear 5 and the third bevel gear 6 have the same module and the same number of teeth. That is, the first bevel gear 4, the second bevel gear 5 and the third bevel gear 6 are bevel gears of the same size or the same model. In this form, the center of the drive shaft 12 is on the same straight line as the center of the first bevel gear 4 and the third bevel gear 6, that is, they are all on the axis of the first bevel gear 4 and the third bevel gear 6. At this time, the rotation axis of the drive shaft 12 can be easily determined, so that the drive shaft 12 can be conveniently connected to the power input mechanism or the component to be driven.

[0039] In order to facilitate the drive shaft 12 to output or input power, a connecting shaft 13 is connected to the center of the drive shaft 12, and the connecting shaft 13 is arranged perpendicular to the drive shaft 12, and the connecting shaft 13 is arranged coaxially with the third bevel gear 6. Specifically, a mounting hole is arranged at the center of the drive shaft 12, and the connecting shaft 13 is penetrated in the mounting hole, and the connecting shaft 13 and the drive shaft 12 cannot move relative to each other in the circumferential direction of the connecting shaft 13, that is, the connecting shaft 13 needs to be relatively fixed with the hole wall of the mounting hole in the circumferential direction, so that the drive shaft 12 can drive the connecting shaft 13 to rotate; specifically, the connecting shaft 13 and the drive shaft 12 can be key-connected.

[0040] To facilitate the arrangement of the connecting shaft 13, through holes may be axially provided on the third bevel gear 6 and / or the first bevel gear 4 so that the connecting shaft 13 can pass through the through holes and be connected to the power input mechanism or the component to be driven.

[0041] As a specific form of the adjustment mechanism of the linear differential adjustment device of this embodiment, the locking member includes a worm wheel 8, a worm 7 and a fastener 9. The worm 7 is connected to the worm wheel 8, the worm wheel 8 is fixedly connected to the third bevel gear 6, and the fastener 9 is used to fix the worm 7.

[0042] Specifically, the online differential adjustment device generally further includes a housing 3, a transmission mechanism, a worm wheel 8 and a worm 7 are arranged in the housing 3, a fastener 9 is fixed on the housing 3, and the fastener 9 can fix the worm 7 relative to the housing 3. That is, the fastener 9 can limit the rotation of the worm 7, and the fastener 9 can be a clamping member, and a clamping portion is provided on the worm 7. After the fastener 9 is clamped with the clamping portion, the worm 7 is fixed. When the fastener 9 is separated from the clamping portion, the locking member makes the third bevel gear 6 in a state where it can rotate by itself, and when the fastener 9 is clamped with the clamping portion, the locking member makes the third bevel gear 6 in a locked state, that is, a state where it cannot rotate by itself.

[0043] The worm gear 8 and the third bevel gear 6 can be fixedly connected by bolts or the like.

[0044] In this embodiment, in order to facilitate the locking or separation operation of the fastener 9 and the worm 7, the fastener 9 is fixed on the outer wall of the box body 3, and the end of the worm 7 away from the worm wheel 8 is connected to an auxiliary shaft 11. The auxiliary shaft 11 passes through the box body 3, and the fastener 9 is used to connect to the auxiliary shaft 11.

[0045] Corresponding to the form of the above-mentioned locking member, the adjusting member is a hand wheel 10 , and the hand wheel 10 is fixedly connected to the worm 7 . Specifically, the hand wheel 10 is fixedly connected to one end of the auxiliary shaft 11 passing through the box body 3 .

[0046] It should be noted that the hand wheel 10 , the auxiliary shaft 11 and the worm 7 are arranged coaxially as much as possible.

[0047] The power of the linear differential adjustment device of this embodiment is input through the sprocket of the power input transmission assembly 2. Assuming the speed is 2Nrpm (N in 2N is a positive integer, rpm is revolutions per minute), the sprocket in the power input transmission assembly 2 and the first bevel gear 4 are connected as a whole by bolts, so the speed of the first bevel gear 4 is 2Nrpm. The first bevel gear 4 drives the two second bevel gears 5 (the second bevel gears 5 are equivalent to planetary gears) to rotate, and the second bevel gear 5 drives the third bevel gear 6 to rotate. The main reduction ratio is calculated as follows:

[0048] Assume that the angular velocity of the first bevel gear 4 is ω1, the angular velocity of the second bevel gear 5 is ω2, and the angular velocity of the third bevel gear 6 is ω3; the reduction ratio between the first bevel gear 4 and the second bevel gear 5 is i12, the reduction ratio between the second bevel gear 5 and the third bevel gear 6 is i23, and the reduction ratio between the first bevel gear 4 and the third bevel gear 6 (the third bevel gear 6 is in an unlocked state) is i13:

[0049] i13=(ω1-ω2) / (ω2ω1-ω3)=-(Z1 / Z3)=-1

[0050] 1-(ω1 / ω2)=-1, (ω1 / ω2)=i12=2

[0051] The bevel gear teeth number and module of the first bevel gear 4, the second bevel gear 5 and the third bevel gear 6 are equal, so the rotation speed of the drive shaft 12 around the center line of the connecting shaft 13 is half of the sprocket input rotation speed 2Nrpm of the power input transmission assembly 2, which is Nrpm.

[0052] The connecting shaft 13 passes through the mounting hole of the driving shaft 12, and the two are connected by a key, so the driving shaft 12 drives the connecting shaft 13, and the speed of the connecting shaft 13 is Nrpm. The connecting shaft 13 is connected to the sprocket of the power output transmission assembly 1, and is connected by a key, so the speed of the sprocket of the power output transmission assembly 1 is Nrpm. That is, the input-output speed ratio of the online differential adjustment device is 2:1.

[0053] When the machine is working normally, the fastener 9 is in a locked state, the auxiliary shaft 11 and the worm 7 do not rotate, the worm 7 locks the worm wheel 8, and the third bevel gear 6 does not rotate. When the machine is abnormal and needs to be adjusted, the fastener 9 is loosened without stopping the machine, and the hand wheel 10 is turned. The hand wheel 10 can be rotated forward and reversed as needed, so that the worm 7 drives the worm wheel 8, and the worm wheel 8 drives the third bevel gear 6 to adjust the speed steplessly, so as to achieve the phase adjustment of the upper and lower related parts of the online differential adjustment device of this embodiment.

[0054] Naturally, when the connecting shaft 13 is used as input and the first bevel gear 4 is used as output as required, the corresponding input-output speed ratio becomes 1:2.

[0055] The online differential adjustment device of this embodiment is similar to a planetary differential mechanism, with a compact structure and smooth transmission. It can be adjusted in both positive and negative phases, and can be adjusted online steplessly. It is convenient and labor-saving to adjust parts with large deadweight online. It can be set at the power input or output position to facilitate the connection with the upper and lower power.

[0056] This embodiment also provides a transmission system, which includes the online differential adjustment device provided in this embodiment.

[0057] Specifically, the gear shaft of the first bevel gear 4 is connected to the power input transmission assembly 2 of the power input mechanism, and specifically, the first bevel gear 4 and the sprocket of the power input transmission assembly 2 are fixed as one by bolts; the connecting shaft 13 is connected to the power output transmission assembly 1, so as to be connected to the component to be driven through the power output transmission assembly 1, and specifically, the connecting shaft 13 can be connected to the shaft key of the power output transmission assembly 1. Alternatively, the connecting shaft 13 connected to the drive shaft 12 can be fixedly connected to the power input mechanism, and the first bevel gear 4 can be fixedly connected to the component to be driven.

[0058] The transmission system of this embodiment can combine the required speed ratio by adjusting the number of teeth of the upper and lower transmission connectors of the power output transmission assembly 1 and the power input transmission assembly 2. That is, when the third bevel gear 6 is in a locked state, the speed ratio of the online differential adjustment device of the transmission system of this embodiment is constant. If different speed ratios are required in different transmission systems, they can be achieved by adjusting the gear ratio of other reduction gear sets connected to the power output transmission assembly 1 or the power input transmission assembly 2 of the transmission system.

[0059] The dynamic system of this embodiment has the same beneficial effects as the online differential adjustment device provided in this embodiment. For details, please refer to the description of the effects of the online differential adjustment device, which will not be repeated here.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An online differential adjustment device, characterized in that: Installed in the transmission system of one of the two conveying mechanisms, the online differential adjustment device includes a transmission mechanism and an adjustment mechanism; The transmission mechanism comprises a first bevel gear (4), a second bevel gear (5) and a third bevel gear (6), wherein the first bevel gear (4) and the third bevel gear (6) are coaxial and arranged opposite to each other with a spacing; The second bevel gear (5) comprises two second bevel gears (5) arranged opposite to each other, the two second bevel gears (5) are coaxial and arranged at a relative interval; the second bevel gear (5) is arranged between the first bevel gear (4) and the third bevel gear (6), and the second bevel gear (5) is meshedly connected with the first bevel gear (4) and the third bevel gear (6) respectively; a driving shaft (12) is connected between the two second bevel gears (5), and the second bevel gear (5) can rotate relative to the driving shaft (12); The adjusting mechanism comprises a locking member and an adjusting member, wherein the locking member and the adjusting member are respectively connected to the third bevel gear (6), the locking member is used to switch the third bevel gear (6) between a self-rotating state and a locked state, and the adjusting member is used to apply a force to the third bevel gear (6) to drive the third bevel gear (6) to rotate when the third bevel gear (6) is in the self-rotating state, the locking member comprises a worm wheel (8), a worm (7) and a fastener (9), the worm (7) is connected to the worm wheel (8), the worm wheel (8) is fixedly connected to the third bevel gear (6), the fastener (9) is used to fix the worm (7), and the adjusting member is a hand wheel (10), and the hand wheel (10) is fixedly connected to the worm (7); The first bevel gear (4) is a power input end, and the drive shaft (12) is a power output end; or, the drive shaft (12) is a power input end, and the first bevel gear (4) is a power output end.

2. The online differential adjustment device according to claim 1, characterized in that: The module and the number of teeth of the first bevel gear (4) are the same as the module and the number of teeth of the third bevel gear (6), and the modules and the number of teeth of the two second bevel gears (5) are the same.

3. The online differential speed adjustment device according to claim 1 or 2, characterized in that: The module and the number of teeth of the first bevel gear (4), the module and the number of teeth of the second bevel gear (5), and the module and the number of teeth of the third bevel gear (6) are all the same.

4. The online differential speed adjustment device according to claim 3, characterized in that: A connecting shaft (13) is connected to the center of the driving shaft (12), the connecting shaft (13) is arranged perpendicular to the driving shaft (12), and the connecting shaft (13) is arranged coaxially with the third bevel gear (6).

5. The online differential speed adjustment device according to claim 1, characterized in that: The online differential adjustment device also includes a housing (3), the transmission mechanism, the worm wheel (8) and the worm (7) are arranged in the housing (3), the fastener (9) is fixed on the housing (3), and the fastener (9) can fix the worm (7) and the housing (3) relative to each other.

6. The online differential speed adjustment device according to claim 5, characterized in that: An end of the worm (7) away from the worm wheel (8) is connected to an auxiliary shaft (11), and the fastener (9) is used to be connected to the auxiliary shaft (11).

7. The online differential speed adjustment device according to claim 6, characterized in that: The auxiliary shaft (11) passes through the box body (3), and the fastener (9) is fixed on the outer side wall of the box body (3).

8. A transmission system, characterized in that: It comprises the online differential speed adjustment device as described in any one of claims 1-7.

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