CN112196958B

CN112196958B - Power transmission device with double transmission systems acting in coordination

Info

Publication number: CN112196958B
Application number: CN202011039068.2A
Authority: CN
Inventors: 王丽红; 于明
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-09-10
Anticipated expiration: 2040-09-28
Also published as: CN112196958A

Abstract

The utility model provides a power transmission device, includes two sets of power transmission system, input shaft, output shaft, lower carriage, erects support and carousel group, and every group power transmission system includes a swing arm, the fixed head of swing arm rotates to be connected on the input shaft, the first inside bearing of activity is connected with the axis of rotation, swing arm one side is equipped with one-level transmission and second grade transmission, erect and be equipped with the output shaft on the support, the output shaft is organized with the carousel and is connected, the carousel group includes two sets of carousels, is equipped with tertiary transmission and level four transmission between every group carousel and the swing arm, and two sets of carousel border position pass through fixed axle fixed connection, and two sets of carousel centers are located same straight line with fixed axle center three, the output shaft is with the border position fixed connection of a set of carousel wherein, just the output shaft aligns with fixed axle center. According to the power transmission device, the transmission chain or the transmission belt is always in a dynamic working state, and the two sets of transmission systems act in a coordinated manner and are mutually restrained, so that the stability of a transmission result is ensured.

Description

Power transmission device with double transmission systems acting in coordination

Technical Field

The invention relates to the field of speed changing devices, in particular to a power transmission device with a double transmission system acting in a coordinated manner.

Background

When a mechanical product or a working machine needs to change output torque or output rotating speed, a power transmission system, such as a speed increaser or a speed reducer, is usually connected. The common speed reducer is mostly in a gear transmission structure or a worm and gear transmission structure, the transmission parts of the structure are tightly combined, the transmission ratio is accurate and stable, but the requirement on the processing precision of the transmission parts is high correspondingly, the cost is high, and the speed reducer is not suitable for remote transmission speed reduction. Although the chain transmission and belt transmission mode solves the problem of remote transmission speed reduction, the transmission stability is poor, and the fixed and unchangeable transmission ratio cannot be ensured only by one annular chain or annular belt to transmit power.

Disclosure of Invention

In order to solve the problems, the invention adopts a mode of coordinated action of double transmission systems to manufacture a novel power transmission device, a transmission chain or a transmission belt is always in a dynamic working state, and the two sets of transmission systems are coordinated and controlled mutually to ensure the stability of a transmission result.

The technical scheme of the invention is as follows:

a power transmission device comprises two groups of power transmission systems, an input shaft, an output shaft, a lower bracket, a vertical bracket and a rotating disc group;

the input shaft is assembled on the lower bracket, and the output shaft is assembled on the vertical bracket;

each group of power transmission systems comprises a swing arm, each swing arm is provided with a movable head and a fixed head, the fixed heads are rotatably connected to an input shaft, one side of each fixed head is provided with a first transmission wheel fixed together with the input shaft, the movable heads are internally and bearing-connected with a rotating shaft, a second transmission wheel and a third transmission wheel are fixed on the rotating shaft, the second transmission wheel, the third transmission wheel and the first transmission wheel are positioned at the same side of the swing arm, the first transmission wheel and the second transmission wheel are sleeved with an annular belt or an annular chain, and the swing arms, the first transmission wheel, the second transmission wheel and the third transmission wheel of the two groups of power transmission systems are identical in structure and size;

the turntable set comprises two groups of turntables, the middle position of each group of turntables is fixedly connected with a fourth driving wheel with the same size, the axle center of the fourth driving wheel is parallel to the axle center of the input shaft, the fourth driving wheel is respectively connected with third driving wheels of two groups of power transmission systems through an annular belt or an annular chain, the edge positions of the two groups of turntables are fixedly connected through a fixed shaft, the centers of the two groups of turntables and the center of the fixed shaft are positioned on the same straight line, and the fixed shaft is equidistant from the axle centers of the two fourth driving wheels;

the output shaft is fixedly connected with the edge of one group of turntables, and the output shaft is aligned with the axis of the fixed shaft.

According to the power transmission device, the first driving wheel, the second driving wheel and the third driving wheel on the power transmission system are positioned at the inner side positions of the two swing arms, so that the structure of the power transmission device is more compact.

As an embodiment, the distance between the two third driving wheels between the two sets of power transmission systems is smaller than the distance between the two second driving wheels, so that the assembly of the two sets of power transmission systems is facilitated.

As another embodiment, the distance between the two third driving wheels between the two groups of power transmission systems is equal to the distance between the two second driving wheels, so that the distance between the two groups of power transmission systems can be minimized, and the structure is most compact.

According to the power transmission device, the size of each group of the turntables is larger than that of the fourth transmission wheel, so that the fixed shaft is convenient to mount, and meanwhile, the fixed shaft is prevented from interfering with the fourth transmission wheel.

According to the power transmission device, the ends, far away from the movable head, of the swing arms are further provided with the balance heads, the balance modules are connected between the balance heads of the two swing arms, and the torsion generated by rotation of one swing arm is transmitted to the other swing arm through the balance modules.

Further, the balance module comprises a balance block, a balance hook and a fixed seat, the balance hook is connected with a balance head and a balance block of the swing arm, the center of the balance block is rotatably connected onto the fixed seat, and the fixed seat is located at the center of the two swing arms.

Furthermore, the balance hook comprises an L-shaped structure, one end of the balance hook is rotatably connected to the two ends of the balance block, and the other end of the balance hook is rotatably connected to the balance head of the swing arm.

As another balancing scheme, a balancing spring can be connected between the swing arm and the lower bracket, and the swing arm is assisted to return by the tension of the balancing spring, so that an annular belt or an annular chain between the third driving wheel and the fourth driving wheel is in a tensioned state.

The power transmission device further comprises a shell, the lower support is fixed to the bottom of the shell, an oil filling port is formed in the top of the shell, an oil discharging port is formed in the bottom of the shell, and the oil filling port is located above the turntable group. When the transmission mode adopts chain transmission, lubricating oil can be injected into the oil injection port, and the oil level at least reaches the lowest end position of the first transmission wheel.

The invention has the beneficial effects that:

1. the invention discloses a power transmission device, which adopts two groups of power transmission systems, wherein each group of power transmission system comprises swing arms, a first transmission wheel, a second transmission wheel and a third transmission wheel which have the same structure and size, the power of an input shaft is transmitted backwards to the fourth transmission wheel, the fourth transmission wheels of the two groups of power transmission systems are respectively fixed on two groups of turntables, the two groups of turntables are fixed through a fixed shaft and rotate around the axial direction of an output shaft coaxial with the fixed shaft, through the coordinated action of the two groups of power transmission systems, the input shaft can drive the two fourth transmission wheels to rotate in a vertical plane while rotating, a transmission chain or a transmission belt is always in a dynamic working state, an annular belt or an annular chain on the fourth transmission wheel can be tensioned along with the up-down action of the two swing arms and the mutual traction, and the stability of a transmission result is ensured.

2. According to the power transmission device disclosed by the invention, the design of the balance module can enable the two swing arms to continuously bear a downward force, so that an annular belt or an annular chain between the swing arms and the turntable group is ensured to be in a tensioned state.

3. According to the power transmission device disclosed by the invention, each driving wheel and the turntable group are arranged between the two swing arms, the structure is compact, and auxiliary devices such as a tension wheel and the like are not required to be arranged.

Drawings

The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.

In the drawings:

fig. 1 is an overall configuration diagram of a power transmission device of embodiment 1;

FIG. 2 is a schematic view of the structure of FIG. 1 with the housing removed;

fig. 3 is an isometric view of the power transmission device of the embodiment 1;

FIG. 4 is a front view of FIG. 2;

FIG. 5 is a top view of FIG. 4;

FIG. 6 is a right side view of FIG. 4;

FIG. 7 is a schematic structural view of a swing arm;

the components represented by the reference numerals in the figures are:

1. the oil filling device comprises an input shaft, 2, an output shaft, 3, a lower bracket, 31, a side longitudinal beam, 32, a cross beam, 4, a vertical bracket, 5, a primary transmission, 51, a first chain wheel, 52, a second chain wheel, 53, a chain, 6, a secondary transmission, 61, a third chain wheel, 62, a fourth chain wheel, 7, a tertiary transmission, 71, a fifth chain wheel, 72, a sixth chain wheel, 8, a quaternary transmission, 81, a seventh chain wheel, 82, an eighth chain wheel, 9, a bearing seat, 10, a first swing arm, 101, a movable head, 102, a fixed head, 103, a balance head, 11, a second swing arm, 12, a turntable group, 121, a first turntable, 122, a second turntable, 123, a third turntable, 124, a fixed shaft, 13, a balance module, 131, a balance block, 132, a balance hook, 133, a fixed seat, 14, a shell, 141, an oil filling opening, 142 and an oil discharging opening.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided so that this disclosure can be more completely understood and fully conveyed to those skilled in the art, and the present disclosure may be implemented in various forms without being limited to the embodiments set forth herein.

The directions "front and back", "left and right", etc. mentioned in the present invention are only used to express the relative positional relationship, and are not restricted by any specific directional references in practical application.

Example 1

Referring to fig. 1 to 6, fig. 1 to 6 illustrate a power transmission device of this embodiment, which includes two sets of power transmission systems, an input shaft 1, an output shaft 2, a lower bracket 3, a vertical bracket 4, a turntable set 12, a balancing module 13, and a housing 14;

the power transmission system in this embodiment takes chain transmission as an example, bearing blocks 9 penetrate through two ends of the input shaft 1, and the bearing blocks 9 are fixed on the lower bracket 3. Specifically, the lower bracket 3 includes side longitudinal beams 31 and a cross beam 32, as shown in fig. 2, the bearing seat 9 is welded on the side longitudinal beams 31 on both sides, the cross beam 32 is connected between the side longitudinal beams 31 on both sides, and preferably, the cross beam 32 includes a position below the input shaft 1 to enhance the strength of the lower bracket 3.

Further, a vertical support 4 vertically arranged is erected on the side longitudinal beam 31, and a shaft sleeve and an output shaft 2 are assembled at the upper end of the vertical support 4. Preferably, a cross beam 32 is also arranged below the vertical support 4.

In this embodiment, the two sets of power transmission systems respectively include a primary transmission 5, a tertiary transmission 7, a first swing arm 10, and a secondary transmission 6, a quaternary transmission 8, and a second swing arm 11, and the primary transmission 5, the tertiary transmission 7, the first swing arm 10, and the secondary transmission 6, the quaternary transmission 8, and the second swing arm 11 are respectively disposed on the left and right sides of the input shaft 1. And the primary transmission 5, the tertiary transmission 7, the first swing arm 10, the secondary transmission 6, the quaternary transmission 8 and the second swing arm 11 have the same structure size.

Further, the structure of the first swing arm 10 is shown in fig. 7, and includes a movable head 101, a fixed head 102 and a balance head 103, bearings are provided in the movable head 101 and the fixed head 102, the fixed head 102 is rotatably connected to the input shaft 1, a first chain wheel 51 fixed together with the input shaft 1 is provided on one side of the fixed head 102, a rotating shaft penetrates through the movable head 101, a second chain wheel 52 and a fifth chain wheel 71 are sequentially fixed on the rotating shaft, the second chain wheel 52, the fifth chain wheel 71 and the first chain wheel 51 are located on the same side of the first swing arm 10, a chain 53 is sleeved on the first chain wheel 51 and the second chain wheel 52, and the first chain wheel 51, the second chain wheel 52 and the chain 53 form a primary transmission 5.

Similarly, a second swing arm 11 is arranged on the right side of the input shaft 1, a third chain wheel 61 is arranged on the inner side of a fixed head 102 of the second swing arm 11, a fourth chain wheel 62 and a seventh chain wheel 81 are arranged on a rotating shaft in a movable head 101 of the second swing arm 11, and the third chain wheel 61, the fourth chain wheel 62 and the chain 53 form a secondary transmission 6.

Referring to fig. 6, a rotary table set 12 is fixedly connected to the inner side of the output shaft 2, the rotary table set 12 includes two sets of rotary tables, one set of rotary tables includes a first rotary table 121 and a second rotary table 122, the other set of rotary tables includes a third rotary table 123, and the first rotary table 121, the second rotary table 122 and the third rotary table 123 are the same in size. And the middle positions of the two groups of turntables are fixedly connected with a sixth chain wheel 72 and an eighth chain wheel 82 which have the same size, and the axes of the sixth chain wheel 72 and the eighth chain wheel 82 are parallel to the axis of the input shaft 1. The sixth chain wheel 72, the fifth chain wheel 71 and the chain 53 form a three-stage transmission 7, and the eighth chain wheel 82, the seventh chain wheel 81 and the chain 53 form a four-stage transmission 8. The first-stage transmission 5 can drive the third-stage transmission 7 to act, and the second-stage transmission 6 can drive the fourth-stage transmission 8 to act.

Furthermore, the edge positions of the second turntable 122 and the third turntable 123 are fixedly connected through a fixing shaft 124, the centers of the two groups of turntables and the center of the fixing shaft 124 are located on the same straight line, and the distance between the fixing shaft 124 and the axes of the two fourth driving wheels is equal, as shown in fig. 4. Preferably, a fourth turntable is further connected to the third turntable 123, so that the weights of the two groups of turntables of the turntable group 2 are equal, and thus the turntable group 12 can rotate in a coordinated manner without providing an additional counterweight.

Further, the sixth sprocket 72 and the eighth sprocket 82 are smaller in size than the first turntable 121, the second turntable 122 and the third turntable 123. The fixing shaft 124 is penetrated outside the sixth sprocket 72 and the eighth sprocket 82 to avoid interference.

Further, the output shaft 2 is fixedly connected to the edge of the first rotating disk 121, and the output shaft 2 is aligned with the axis of the fixed shaft 124.

In this embodiment, the first swing arm 10 and the second swing arm 11 are located between the two bearing seats 9 of the lower frame 3, and the primary transmission 5 and the secondary transmission 6 are located inside the first swing arm 10 and the second swing arm 11, so that the structure of the power transmission device is more compact.

Furthermore, the tertiary gear 7 can be adjacent to the quaternary gear 8 or the secondary gear 6. When the three-stage transmission 7 is adjacent to the four-stage transmission 8, the assembly of two groups of power transmission systems can be conveniently carried out. When the tertiary drive 7 is adjacent to the secondary drive 6, the distance between the two sets of power transmission systems is minimal and the structure is most compact. The structure given in this embodiment is such that the three-stage transmission 7 is adjacent to the four-stage transmission 8, see fig. 6.

Referring to fig. 5, in order to ensure that the chains 53 of the three-stage transmission 7 and the four-stage transmission 8 are kept in a tensioned state and ensure the stability of the transmission result, the ends of the first swing arm 10 and the second swing arm 11 are further provided with balancing heads 103 for connecting the balancing modules 13.

Further, the balancing module 13 includes a balancing block 131, a balancing hook 132 and a fixing seat 133, the balancing hook 132 connects the balancing head 103 of the swing arm and the balancing block 131, the center of the balancing block 131 is rotatably connected to the fixing seat 133, and the fixing seat 133 is located at the center of the two swing arms.

Further, the balance hook 132 includes an L-shaped structure, one end of which is rotatably connected to two end positions of the balance weight 131, and the other end of which is rotatably connected to the balance head 103 of the swing arm. When the two swing arms move up and down, the torque generated by the rotation of one swing arm can be transmitted to the other swing arm through the balance module 13. The two swing arms are continuously acted by a downward force, and the chain 53 between the swing arms and the turntable set 12 is ensured to be in a tensioned state.

In addition, one end of the swing arm movable head 101 can also be provided with an adjusting device for adjusting the tightness of the primary transmission 5 and the secondary transmission 6.

As another balancing scheme, a balancing spring may be further connected between the swing arm and the lower bracket 3, and the swing arm is assisted to return by the tension of the balancing spring, so that the chain 53 between the swing arm and the turntable set 12 is in a tensioned state.

Referring to fig. 1, a housing 14 is further provided outside the power transmission device, the lower bracket 3 is fixed at the bottom of the housing 14, an oil filling port 141 is provided at the top of the housing 14, an oil discharge port 142 is provided at the bottom, and the oil filling port 141 is located above the rotary table 12 and can enable the filled lubricating oil to flow through the chain wheel on the rotary table 12. The oil level of the filling reaches at least the lowermost position of the first drive wheel.

The power transmission device adopts two groups of power transmission systems, the sizes of parts contained in each group of power transmission systems are the same, power is transmitted to the sixth chain wheel 72 through the first-stage transmission 5 and the third-stage transmission 7 after being connected with the input shaft 1, is transmitted to the eighth chain wheel 82 through the second-stage transmission 6 and the fourth-stage transmission 8, the sixth chain wheel 72 and the eighth chain wheel 82 are respectively fixed on two groups of turntables, the two groups of turntables are fixed through a fixed shaft 124, and rotates around the axial direction of the output shaft 2 which is coaxial with the fixed shaft 124, and through the coordinated action of the two groups of power transmission systems, while the input shaft 1 rotates, the sixth chain wheel 72 and the eighth chain wheel 82 can be driven to rotate in a vertical plane, in the process, the chain 53 is always in a dynamic working state, and along with the up-and-down action and the mutual traction of the two swing arms and the action of the balance module 13, the chain 53 can be tightened, so that the stability of a transmission result is ensured.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or additions or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A power transmission device with double transmission systems acting in a coordinated manner is characterized by comprising two groups of power transmission systems, an input shaft, an output shaft, a lower bracket, a vertical bracket and a rotating disc group;

each group of power transmission systems comprises a swing arm, each swing arm is provided with a movable head and a fixed head, the fixed heads are rotatably connected to an input shaft, one side of each fixed head is provided with a first transmission wheel fixed together with the input shaft, the movable heads are internally and bearing-connected with a rotating shaft, a second transmission wheel and a third transmission wheel are fixed on the rotating shaft, the second transmission wheel, the third transmission wheel and the first transmission wheel are positioned at the same side of the swing arm, the first transmission wheel and the second transmission wheel are sleeved with an annular belt or an annular chain, and a balance spring is connected between the swing arm and the lower support;

the rotary table set comprises two groups of rotary tables, the middle position of each group of rotary tables is fixedly connected with a fourth driving wheel, the fourth driving wheels are respectively connected with the third driving wheels of the two groups of power transmission systems through annular belts or annular chains, the edge positions of the two groups of rotary tables are fixedly connected through a fixed shaft, and the centers of the two groups of rotary tables and the center of the fixed shaft are positioned on the same straight line;

2. The power transmission device with two coordinated transmission systems as claimed in claim 1, wherein the first transmission wheel, the second transmission wheel and the third transmission wheel of the power transmission system are located at the inner side positions of the two swing arms.

3. A dual drive system co-ordinated power transmission as claimed in claim 2 wherein the distance between the two third drive wheels between the two sets of power transmission systems is less than the distance between the two second drive wheels.

4. A dual drive system co-ordinated power transmission as claimed in claim 2 wherein the distance between the two third drive wheels between the two sets of power transmission systems is equal to the distance between the two second drive wheels.

5. A dual drive system co-ordinated power transmission as claimed in claim 1 in which the size of each set of discs is greater than the size of the fourth drive wheel.

6. The power transmission device with the double transmission systems acting in coordination according to claim 1, wherein one end of each of the swing arms, which is far away from the movable head, is further provided with a balance head, a balance module is connected between the balance heads of the two swing arms, and a torque force generated by rotation of one swing arm is transmitted to the other swing arm through the balance module.

7. The power transmission device with two coordinated actions of transmission systems as claimed in claim 6, wherein said balance module comprises a balance block, a balance hook and a fixed seat, said balance hook connects the balance head of the swing arm and the balance block, said balance block is connected to the fixed seat in a center rotation way.

8. The dual driveline coordinated power transmission apparatus of claim 7, wherein the balance hook comprises an L-shaped structure connected to both end positions of the balance weight.

9. The dual drive system coordinated power transmission device of claim 1, further comprising a housing, wherein said lower bracket is fixed at the bottom of said housing, said housing is provided with an oil injection port at the top and an oil discharge port at the bottom, said oil injection port is located above said turntable assembly.