CN117386774A - Double-driving structure of roller cam single output shaft - Google Patents

Abstract

The invention relates to the technical field of roller cams, and discloses a double-driving structure of a single output shaft of a roller cam, which comprises a driven disc, two cams and two mounting seats, wherein the driven disc is meshed with the two cams through needle bearings on the surfaces of the driven disc; the mounting seat comprises an L-shaped bottom plate, two symmetrical guide rods are fixedly connected to the L-shaped bottom plate, and an extension mechanism is arranged between the two guide rods in a clamping and sliding manner along the length direction of the guide rods; the extension mechanism comprises a shell, and a driving piece is arranged on one side of the shell. When the driven plate rapidly brakes the cam by the driving piece under the condition of high-speed rotation, the shell can move along the length direction of the guide rod for a certain distance with the cam, so that sharp noise caused by strong friction between the surface ribs and the needle roller bearing caused by continuous rotation of the cam can be avoided, impact force generated when the cam moves can be buffered, and the problem that the contact part of the cam and the mounting seat is deformed and damaged due to overlarge stress is avoided.

Description

Double-driving structure of roller cam single output shaft

Technical Field

The invention relates to the technical field of numerical control rotary tables, in particular to a double-driving structure of a single output shaft of a roller cam.

Background

The roller cam is a common element in a mechanical transmission system, is widely applied to various mechanical transmission systems, such as an engine valve control system, a machine tool, conveying equipment and the like, has the characteristics of simple structure, high reliability, stable movement and the like, and provides convenience for automatic production.

At present, the roller cam turntable structure with double driving parts can enable the torque force and the stress force of the output main shaft to be more even through the double driving structure, but the roller cam has the defects that in practical application, the roller cam has the following defects under specific application conditions:

when the high-load high-speed motion is carried out, the driving piece brakes the cam in a sudden braking way, the cam can stop rotating due to the stopping of the driving shaft of the driving piece (such as a motor), but at the moment, the driven disc can continuously rotate under the action of inertia, so that the needle roller bearing on the surface of the driven disc can impact the rib of the cam surface in a stopping state, the surface of the needle roller bearing can be in severe friction with the cam rib, sharp noise is generated between the needle roller bearing and the cam, and in addition, the deformation damage can be generated due to overlarge stress between the needle roller bearing and the cam.

Disclosure of Invention

The invention aims to provide a double-driving structure of a single output shaft of a roller cam, which is used for solving the technical problems that when the roller cam performs sudden braking during high-speed movement, a needle bearing and the cam generate noise due to intense friction and are easy to damage.

In order to achieve the above object, the present invention provides the following technical solutions: a double-driving structure of a single output shaft of a roller cam comprises a driven disc, two cams and two mounting seats, wherein the driven disc is meshed with the two cams through needle bearings on the surfaces of the driven disc;

the mounting seat comprises an L-shaped bottom plate, two symmetrical guide rods are fixedly connected to the L-shaped bottom plate, and an extension mechanism is arranged between the two guide rods in a clamping and sliding manner along the length direction of the guide rods;

the extension mechanism comprises a shell, one side of the shell is provided with a driving piece, and the driving piece is connected with a corresponding cam for driving the cam to rotate;

the shell is provided with a second positioning block capable of locking the position of the second positioning block on the guide rod, the second positioning block can unlock the shell when the cam is suddenly braked, and the guide rod is sleeved with a first spring for pushing the shell to reset.

Preferably, the both sides of shell are all fixedly connected with inside side lever that is hollow structure, and two guide bars are slided respectively and are pegged graft in the inside of two side levers, and the dead lever of one side all fixedly connected with throughout the side lever of two guide bars, and spring one is located between side lever inner wall one side and the dead lever to be used for promoting the side lever to move towards the direction of keeping away from the dead lever all the time.

Preferably, the movable rod I inserted in one side of the shell is fixedly connected to the L-shaped bottom plate, the surface of the movable rod I is provided with two locating grooves II which are vertically symmetrical, the upper side and the lower side of the shell are respectively connected with the sliding rod I in a penetrating mode, the bottoms of the two sliding rods I are fixedly connected with the connecting frames, the number of the locating blocks II is two, the two locating blocks II are respectively fixedly connected to one opposite sides of the two connecting frames and inserted in the corresponding locating grooves II, and the sliding rod I is sleeved with a spring IV which is used for pushing the connecting frames to the direction of the locating grooves II.

Preferably, one side of shell is equipped with the spliced pole, one side fixedly connected with connecting seat of spliced pole, and the driving piece is installed on the connecting seat, the opposite side fixedly connected with of spliced pole is two bilateral symmetry and be located the connecting rod of shell, one side common fixedly connected with fixed plate of spliced pole is kept away from to two connecting rods, and all cup jointed the rubber piece that is located between shell inner wall and the fixed plate surface on two connecting rods, when the driving piece carries out emergency brake to the cam under the high-speed rotation, the rubber piece can be flattened and make two locating pieces second carry out opposite removal on the shell inner wall by the fixed plate.

Preferably, two sliding rods which are vertically symmetrical are clamped and connected in the shell in a sliding manner along the length direction of the sliding rods, two symmetrical hollow rods are fixedly connected to the inner wall of the shell, two opposite sides of the two hollow rods are clamped and connected with movable rods II in a sliding manner, a gap is formed between one end of each movable rod II, which faces the rubber block, and the surface of the rubber block, a spring II which is used for pushing the two movable rods II to push the two movable rods II, which face the rubber block, is arranged in the two hollow rods, a connecting rod I which is inclined is hinged to each of the two hollow rods, one end of each of the two connecting rods I is hinged to the corresponding sliding rod II, and the positioning block II can move left and right along with the sliding rod II to correspondingly lift.

Preferably, the rotary drum is rotationally connected to the connecting frame, a pushing block which is in a right triangle structure is fixedly connected to one side of the sliding rod II, and an inclined surface of the pushing block is contacted with the circumferential surface of the rotary drum.

Preferably, the first movable rod is of a T-shaped structure so as to prevent the shell from being separated from the first movable rod when the shell slides.

Preferably, the first positioning groove is formed in one of the fixed rods, the locking mechanism is arranged on the shell and comprises an L-shaped block fixedly connected to one side of one side rod, a rotating rod is connected to the L-shaped block in a rotating mode, the first positioning block matched with the first positioning groove is formed at one end of the rotating rod, and the third spring used for pushing the rotating rod to rotate towards the direction of the fixed rod is arranged on the L-shaped block.

Preferably, one side of the shell is provided with a sliding block in a clamping sliding manner along the length direction of the sliding block, one side of the sliding block is fixedly connected with an L-shaped plate, one side of the L-shaped plate is fixedly connected with a push rod corresponding to the rotating rod, and the sliding block can slide towards one side when the rubber block is flattened, so that the push rod can reserve a space for the rotating rod to rotate in the positioning groove I.

Preferably, the hardness of the rubber block positioned below is greater than that of the rubber block positioned above, a flexible plate is inserted between the two rubber blocks, two stop rods which are bilaterally symmetrical and are contacted with the two sides of the top surface of the flexible plate are fixedly connected in the shell, an H-shaped sliding block is inserted in the stroke groove in a clamping sliding manner, a spring five for supporting the H-shaped sliding block is arranged in the stroke groove, a connecting rod II which is inclined is hinged to one side of the H-shaped sliding block positioned outside the shell, and one side of the connecting rod II is hinged to the sliding block.

Compared with the prior art, the technical scheme provided by the invention has the beneficial effects that:

when the driven plate rapidly brakes the cam by the driving piece under the condition of high-speed rotation, the surface of the driven plate and the needle roller bearing meshed with the cam can bring stronger impact force to the cam, and at the moment, the second positioning block can release the locking of the shell between the two guide rods, so that the shell can move for a certain distance along the length direction of the guide rods with the cam, the problem that sharp noise is generated due to strong friction between the surface ribs and the needle roller bearing caused by continuous rotation of the cam can be avoided, the impact force generated when the cam moves can be buffered, and the problem that the contact part of the cam and the mounting seat is deformed and damaged due to overlarge stress is avoided.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic top view of the structure of the present invention;

FIG. 3 is a schematic elevation view of a partial structure of the present invention;

FIG. 4 is a schematic view of the cross-sectional structure of FIG. 3 taken along the line A-A in accordance with the present invention;

FIG. 5 is a schematic perspective view of the structure of FIG. 3 according to the present invention;

FIG. 6 is a schematic view of a mounting base structure according to the present invention;

FIG. 7 is a schematic view of an extension mechanism according to the present invention;

FIG. 8 is a schematic view showing the disassembly of the housing structure of the present invention;

FIG. 9 is a schematic illustration of a further housing structure of the present invention shown disassembled;

fig. 10 is an exploded view of another partial structure of the present invention.

In the figure:

1. a driven plate;

2. a cam;

3. a mounting base; 31. an L-shaped bottom plate; 32. a guide rod; 33. a first spring; 34. a fixed rod; 35. a positioning groove I; 36. a movable rod I; 361. a positioning groove II; 37. a second positioning block; 371. a first sliding rod; 372. a connection frame; 373. a rotating drum;

4. an extension mechanism; 41. a housing; 42. a side bar; 43. a connecting column; 431. a connecting seat; 44. a connecting rod; 45. a fixing plate; 46. a rubber block; 461. a sliding rod II; 462. a hollow rod; 4621. a second spring; 463. a second movable rod; 464. a first connecting rod; 465. a pushing block; 47. a ductile plate; 48. a stop lever;

5. a locking mechanism; 51. an L-shaped block; 52. a rotating lever; 53. a first positioning block; 54. an L-shaped plate; 55. a push rod; 56. a sliding block;

6. a travel groove; 61. an H-shaped sliding block; 62. a second connecting rod;

7. a driving member.

Detailed Description

The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.

Example 1

Referring to fig. 1 to 10, in a first embodiment of the present invention, the present invention provides a dual-driving structure of a roller cam single output shaft, which includes a driven disc 1, two cams 2 and two mounting seats 3, wherein the driven disc 1 is engaged with the two cams 2 through needle bearings on the surface of the driven disc 1; the mounting seat 3 comprises an L-shaped bottom plate 31, two symmetrical guide rods 32 are fixedly connected to the L-shaped bottom plate 31, and an extension mechanism 4 is arranged between the two guide rods 32 in a clamping and sliding manner along the length direction of the guide rods; the extension mechanism 4 comprises a housing 41, one side of the housing 41 is provided with a driving piece 7, and the driving piece 7 is connected with the corresponding cam 2 for driving the cam to rotate; the second positioning block 37 capable of locking the position of the second positioning block on the guide rod 32 is arranged on the shell 41, so that the shell 41 is fixed between the two guide rods 32, meanwhile, the second positioning block 37 can unlock the shell 41 when the cam 2 is suddenly braked, the first spring 33 for pushing the shell 41 to reset is sleeved on the guide rod 32, a motor can be selected as the driving piece 7, a driving shaft of the motor is fixed with one end of the cam 2, and the cam 2 is driven to rotate through rotation of the driving shaft.

Through the design, the driving piece 7 can drive the cam 2 to rotate and drive the output shaft on the driven disc 1 to rotate through the engagement with the needle bearing on the surface of the driven disc 1, when the driven disc 1 rapidly rotates and the driving piece 7 rapidly brakes the cam 2, the needle bearing on the surface of the cam 2 engaged with the cam 2 can bring stronger impact force to the cam 2 after stopping rotating due to the inertia effect of the driven disc 1, so that the cam 2 is pushed to one side, at the moment, the positioning block two 37 can release the locking of the shell 41 between the two guide rods 32, so that the shell 41 can move for a certain distance with the cam 2 along the length direction of the guide rods 32, and therefore, the problem that the cam 2 can continuously rotate to cause strong friction between the surface ribs and the needle bearing to generate sharp noise, and the problem that the first spring 33 can shrink through self elastic action and buffer the impact force when the cam 2 moves to avoid deformation and damage of the contact part of the cam 2 and the mounting seat 3 due to overlarge stress can be avoided.

Regarding the specific connection manner between the housing 41 and the two guide rods 32, the side rods 42 with hollow structures are fixedly connected to both sides of the housing 41, and the two guide rods 32 are respectively slidably inserted into the two side rods 42, so that the housing 41 can slide left and right along the axial direction of the guide rods 32.

Meanwhile, one side of each guide rod 32 is fixedly connected with a fixed rod 34 penetrating through the side rod 42, and the first spring 33 is located between one side of the inner wall of the side rod 42 and the fixed rod 34 and used for pushing the side rod 42 to move towards a direction away from the fixed rod 34 all the time, so that the first spring 33 can elastically shrink and buffer the first spring 33 by itself when the housing 41 slides on the guide rod 32 due to sudden braking of the cam 2, and the first spring 33 can push the housing 41 to reset after braking of the driven disc 1 due to elastic action of the first spring.

In order to fix the position of the extension mechanism 4 under normal use of the driven disc 1 and the cam 2, a first movable rod 36 inserted on one side of the housing 41 can be fixedly connected to the L-shaped bottom plate 31, two positioning grooves 361 which are vertically symmetrical are formed in the surface of the first movable rod 36, a first sliding rod 371 is inserted and connected to the upper side and the lower side of the housing 41, connecting frames 372 are fixedly connected to the bottoms of the two first sliding rods 371, the number of the two positioning blocks 37 is two, the two second positioning blocks 37 are respectively fixedly connected to one side of the two connecting frames 372 opposite and inserted into the corresponding positioning grooves 361, and a fourth spring for pushing the connecting frames 372 towards the direction of the second positioning grooves 361 is sleeved on the first sliding rod 371 so as to press the second positioning blocks 37 into the positioning grooves 361 on the first movable rod 36, so that the second positioning grooves 361 form locking with the housing 41, and the extension mechanism 4 is fixed on the mounting seat 3.

In the case where the driven disc 1 is in a high-speed rotation state, when the driving element 7 makes a sudden brake on the cam 2, the lock of the housing 41 by the second positioning block 37 is released in the following specific manner: one side of the shell 41 is provided with a connecting column 43, one side of the connecting column 43 is fixedly connected with a connecting seat 431, a driving piece 7 is arranged on the connecting seat 431, the other side of the connecting column 43 is fixedly connected with two connecting rods 44 which are vertically symmetrical and located in the shell 41, one side of the two connecting rods 44 away from the connecting column 43 is fixedly connected with a fixed plate 45 together, rubber blocks 46 located between the inner wall of the shell 41 and the surface of the fixed plate 45 are sleeved on the two connecting rods 44, when the driving piece 7 carries out emergency braking on the cam 2 rotating at a high speed, the rubber blocks 46 can be flattened on the inner wall of the shell 41 by the fixed plate 45, and the two positioning blocks 37 are enabled to carry out opposite movement, so that the positioning blocks two 37 can be separated from the inside of the positioning groove two 361 and release the limit between the shell 41 and the movable rod one 36, and the whole shell 41 can be pulled to one side by the cam 2.

Example two

On the basis of the first embodiment, please refer to fig. 1-10, which is a second embodiment of the present invention, and the embodiment is different from the above embodiment in that: two sliding rods 461 which are vertically symmetrical are clamped and slidingly connected in the shell 41 along the length direction of the shell 41, two symmetrical hollow rods 462 are fixedly connected to the inner wall of the shell 41, two movable rods 463 are clamped and slidingly inserted at opposite sides of the two hollow rods 462, a gap is formed between one end of each movable rod 463 facing the corresponding rubber block 46 and the surface of each rubber block 46, two springs 4621 for pushing the corresponding movable rod 463 to push the corresponding movable rod 463 to the corresponding rubber block 46 are arranged in the two hollow rods 462, inclined connecting rods 464 are hinged to the corresponding hollow rods 462, one ends of the corresponding connecting rods 464 are hinged to the corresponding sliding rods 461 respectively, so that when the cam 2 is pulled to one side by the inertia of the driven disc 1 at a high speed, the fixed plate 45 can flatten the corresponding rubber blocks 46 in the shell 41, the diameters of the corresponding rubber blocks 46 can extend outwards and extrude the corresponding movable rods 463 into the corresponding hollow rods 462, the corresponding connecting rods 463 can push the corresponding sliding rods 461 to slide towards one side along with the movement of the corresponding movable rods 463, and the corresponding positioning blocks 37 can be lifted up and down, and the corresponding positioning blocks 37 can be lifted up and separated from the corresponding positioning blocks 361.

Further, the connecting frame 372 is rotatably connected with the rotating drum 373, one side of the second sliding rod 461 is fixedly connected with a pushing block 465 having a right triangle structure, the inclined surface of the pushing block 465 contacts with the circumferential surface of the rotating drum 373, the second sliding rod 461 drives the pushing block 465 to move toward the connecting frame 372, and the rotating drum 373 moves upward along the inclined surface of the pushing block 465 to drive the second positioning block 37 to separate from the second positioning groove 361.

Example III

Referring to fig. 1 to 10, a third embodiment of the present invention is shown based on the first embodiment and the second embodiment, and the difference between the third embodiment and the first embodiment is that:

the first movable rod 36 has a T-shaped structure, so that the housing 41 can be prevented from being separated from the first movable rod 36 when sliding, the distance travel of the cam 2 is limited, the cam 2 cannot be separated from the engagement with the needle bearing on the surface of the driven disc 1 due to the movement of the cam during braking, and the design is more reasonable.

One of the fixed bars 34 is provided with a first positioning groove 35, the shell 41 is provided with a locking mechanism 5, the locking mechanism 5 comprises an L-shaped block 51 fixedly connected to one side of one side bar 42, the L-shaped block 51 is rotationally connected with a rotating bar 52, one end of the rotating bar 52 is provided with a first positioning block 53 which is matched with the first positioning groove 35, the L-shaped block 51 is provided with a third spring for pushing the rotating bar 52 to rotate towards the fixed bar 34, and after the cam 2 is suddenly braked to enable the shell 41 to slide on the guide bar 32 for a certain distance, the first positioning block 53 can be inserted into the first positioning groove 35 under the pushing of the third spring to form a limit, so that the shell 41 and the cam 2 can keep a moving state without being immediately pushed back to reset by the first spring 33.

The sliding block 56 is connected to one side of the housing 41 in a clamping and sliding manner along the length direction, the L-shaped plate 54 is fixedly connected to one side of the sliding block 56, the push rod 55 corresponding to the rotating rod 52 is fixedly connected to one side of the L-shaped plate 54, and the sliding block 56 can slide to one side when the rubber block 46 is flattened, so that the push rod 55 can be driven to synchronously move, and a space for the rotating rod 52 to rotate in the positioning groove one 35 is reserved;

it should be noted that, the hardness of the rubber block 46 located below is greater than the hardness of the rubber block 46 located above, and the flexible plate 47 is inserted between the two rubber blocks 46, two stop rods 48 which are symmetrical left and right and are contacted with two sides of the top surface of the flexible plate 47 are fixedly connected in the shell 41, an H-shaped sliding block 61 is inserted in the travel groove 6 in a clamping sliding manner, a spring five for supporting the H-shaped sliding block 61 is arranged in the travel groove 6, one side of the H-shaped sliding block 61 located in the shell 41 is contacted with one side of the bottom of the flexible plate 47, one side of the H-shaped sliding block 61 located outside the shell 41 is hinged with a second inclined connecting rod 62, one side of the second connecting rod 62 is hinged on the sliding block 56, when the two rubber blocks 46 are flattened, as the hardness of the lower rubber block 46 is higher, the bottom of the rubber block 46 is pressed above is concave, the flexible plate 47 is pressed into an inverted V-shaped structure, the middle part of the flexible plate 47 is pressed and jacked by the two rubber blocks 46, the two sides of the flexible plate 47 are limited by the stop rods 48, and the stop rods 48 are moved downwards, and the two stop rods are pushed by the stop rods to the two stop rods 32 to move to the position of the first connecting rod and the two stop the position of the flexible plate 46 to the position of the two guide blocks and the position of the flexible plate 46 is further deformed by the position of the positioning block 35 when the positioning rod is moved by the positioning groove and can be moved by the positioning rod 35 and can be moved by the position between the stop the position of the stop block and the position of the stop rod 35 and the position of the positioning rod 35;

after the cam 2 is impacted by the inertia of the driven disc 1, the flattened rubber block 46 slowly recovers the shape, and the spring five pushes the H-shaped sliding block 61 to reset upwards, so that the second connecting rod 62 can pull the sliding block 56 to move synchronously and reset, and the push rod 55 contacts with the rotating rod 52 and presses the rotating rod 52 to rotate in the moving process, so that the first positioning block 53 is separated from the first positioning groove 35, and the housing 41 and the cam 2 are reset.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the simple modifications belong to the protection scope of the present invention.

In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.

Moreover, any combination of the various embodiments of the invention can be made without departing from the spirit of the invention, which should also be considered as disclosed herein.

Claims (10)

1. The utility model provides a roller cam single output axle's dual drive structure, includes driven disc (1), two cams (2) and two mount pad (3), and driven disc (1) meshes with two cams (2) through its surperficial needle bearing, its characterized in that:

the mounting seat (3) comprises an L-shaped bottom plate (31), two symmetrical guide rods (32) are fixedly connected to the L-shaped bottom plate (31), and an extension mechanism (4) is arranged between the two guide rods (32) in a clamping and sliding manner along the length direction of the guide rods;

the extension mechanism (4) comprises a shell (41), one side of the shell (41) is provided with a driving piece (7), and the driving piece (7) is connected with the corresponding cam (2) for driving the cam to rotate;

the shell (41) is provided with a second positioning block (37) capable of locking the position of the second positioning block on the guide rod (32), the second positioning block (37) can unlock the shell (41) when the cam (2) is suddenly braked, and the guide rod (32) is sleeved with a first spring (33) for pushing the shell (41) to reset.

2. The dual drive structure of a roller cam single output shaft of claim 1, wherein: two sides of the shell (41) are fixedly connected with side rods (42) with hollow structures, the two guide rods (32) are respectively inserted into the two side rods (42) in a sliding mode, one sides of the two guide rods (32) are fixedly connected with fixing rods (34) penetrating through the side rods (42), and the first springs (33) are located between one side of the inner walls of the side rods (42) and the fixing rods (34) and used for pushing the side rods (42) to move towards a direction away from the fixing rods (34) all the time.

3. The dual drive structure of a roller cam single output shaft of claim 2, wherein: the L-shaped bottom plate (31) is fixedly connected with a movable rod I (36) inserted into one side of the shell (41), two locating grooves II (361) which are vertically symmetrical are formed in the surface of the movable rod I (36), sliding rods I (371) are connected to the upper side and the lower side of the shell (41) in an inserted mode, connecting frames (372) are fixedly connected to the bottoms of the two sliding rods I (371), the number of the two locating blocks II (37) is two, the two locating blocks II (37) are respectively fixedly connected to one opposite sides of the two connecting frames (372) and inserted into the corresponding locating grooves II (361), and springs IV for pushing the connecting frames (372) to the directions of the locating grooves II (361) are sleeved on the sliding rods I (371).

4. A roller cam single output shaft dual drive arrangement as claimed in claim 3 wherein: one side of shell (41) is equipped with spliced pole (43), one side fixedly connected with connecting seat (431) of spliced pole (43), and driving piece (7) are installed on connecting seat (431), the opposite side fixedly connected with of spliced pole (43) is two bilateral symmetry and be located connecting rod (44) in shell (41), one side fixedly connected with fixed plate (45) jointly of spliced pole (43) is kept away from to two connecting rods (44), and rubber piece (46) between shell (41) inner wall and fixed plate (45) surface have all been cup jointed on two connecting rods (44), when driving piece (7) carry out emergency brake to cam (2) under the high-speed rotation, rubber piece (46) can be flattened on shell (41) inner wall by fixed plate (45) and make two locating pieces two (37) carry out opposite removal.

5. The dual drive structure of a roller cam single output shaft of claim 4, wherein: two sliding rods II (461) which are vertically symmetrical are clamped and connected in the shell (41) in a sliding manner along the length direction of the shell, two symmetrical hollow rods (462) are fixedly connected to the inner wall of the shell (41), two opposite sides of the two hollow rods (462) are clamped and connected with two movable rods II (463) in a sliding manner, a gap is formed between one end of each movable rod II (463) facing the rubber block (46) and the surface of the rubber block (46), two springs II (4621) for pushing the two movable rods II (463) to push the rubber block (46) are arranged in the two hollow rods (462), inclined connecting rods I (464) are hinged to the two hollow rods (462), one ends of the two connecting rods I (464) are hinged to the corresponding sliding rods II (461) respectively, and the positioning block II (37) can move left and right along with the sliding rods II (461) to correspondingly lift.

6. The dual drive structure of a roller cam single output shaft of claim 5, wherein: the rotary drum (373) is rotationally connected to the connecting frame (372), a pushing block (465) which is in a right triangle structure is fixedly connected to one side of the sliding rod II (461), and an inclined surface of the pushing block (465) is contacted with the circumferential surface of the rotary drum (373).

7. A roller cam single output shaft dual drive arrangement as claimed in claim 3 wherein: the movable rod I (36) is of a T-shaped structure so as to prevent the shell (41) from being separated from the movable rod I (36) when sliding.

8. The dual drive structure of a roller cam single output shaft of claim 4, wherein: one of them dead lever (34) has offered constant head tank one (35), be provided with locking mechanism (5) on shell (41), locking mechanism (5) are including L type piece (51) of fixed connection in one of them side lever (42) one side, rotate on L type piece (51) and be connected with dwang (52), one end of dwang (52) is formed with locating piece one (53) with constant head tank one (35) looks adaptation, and be equipped with on L type piece (51) and be used for promoting dwang (52) and carry out pivoted spring three towards dead lever (34) direction.

9. The dual drive structure of a roller cam single output shaft of claim 8, wherein: one side of the shell (41) is clamped and slidingly connected with a sliding block (56) along the length direction of the shell, one side of the sliding block (56) is fixedly connected with an L-shaped plate (54), one side of the L-shaped plate (54) is fixedly connected with a push rod (55) corresponding to the rotating rod (52), and the sliding block (56) can slide towards one side when the rubber block (46) is flattened, so that the push rod (55) reserves a space for the rotating rod (52) to rotate in the positioning groove I (35).

10. The dual drive structure of a roller cam single output shaft of claim 9, wherein: the hardness of the rubber block (46) positioned below is greater than that of the rubber block (46) positioned above, a flexible plate (47) is inserted between the two rubber blocks (46), two stop rods (48) which are bilaterally symmetrical and are contacted with two sides of the top surface of the flexible plate (47) are fixedly connected in the shell (41), an H-shaped sliding block (61) is inserted in the travel groove (6) in a clamping sliding manner, a spring five used for supporting the H-shaped sliding block (61) is arranged in the travel groove (6), one side of the H-shaped sliding block (61) positioned in the shell (1) is contacted with one side of the bottom of the flexible plate (47), a connecting rod II (62) which is inclined is hinged to one side of the H-shaped sliding block (61) positioned outside the shell (41), and one side of the connecting rod II (62) is hinged to the sliding block (56).