CN117703044A

CN117703044A - Trowelling machine for three-trowelling optical disc

Info

Publication number: CN117703044A
Application number: CN202410079016.XA
Authority: CN
Inventors: 赵国峰; 赵月起; 赵飞; 赵泽辉; 赵少松
Original assignee: Hebei Kexinbo Mechanical And Electrical Equipment Co ltd
Current assignee: Hebei Kexinbo Mechanical And Electrical Equipment Co ltd
Priority date: 2024-01-19
Filing date: 2024-01-19
Publication date: 2024-03-15

Abstract

The invention relates to a trowelling machine with three trowelling discs, and belongs to the technical field of concrete construction machinery. Comprises a frame, an engine, a transmission mechanism and a trowelling disk mechanism; the optical disk smearing mechanism is provided with three triangular arrangement, namely a front optical disk smearing mechanism, a front two optical disks smearing mechanism and a rear middle optical disk smearing mechanism; each group of trowelling discs is independently connected with the corresponding engine through power; two control levers are arranged, namely a first control lever and a second control lever; three operation transmission rotating shafts are arranged, namely a first rotating shaft, a second rotating shaft and a third rotating shaft; the first control rod controls the front erasing disc to swing back and forth; the first control rod also controls the rear middle trowelling disc to swing left and right; the second control rod controls the left and right swing of the front two trowelling discs; the second rotating shaft and the third rotating shaft are connected and driven through a chain wheel mechanism; the third rotating shaft controls the back middle trowelling disc to swing back and forth; the second control rod controls the front two wiper discs to swing back and forth. Compared with the traditional troweling machine with two troweling disc mechanisms, the troweling machine has high working efficiency.

Description

Trowelling machine for three-trowelling optical disc

Technical Field

The invention relates to a trowelling machine with three trowelling discs, and belongs to the technical field of concrete construction machinery.

Background

The driving trowelling machine is a machine for trowelling a concrete surface and mainly comprises a frame, an engine, a transmission mechanism and a trowelling disk mechanism. Wherein, the trowelling piece of trowelling disk mechanism is direct with ground contact, trowelling is carried out ground through continuous rotation. The actions of advancing, retreating, steering and the like of the trowelling machine are realized by changing the contact angle of the trowelling piece and the ground.

At present, the driving trowelling machine is provided with two trowelling disc mechanisms, and the two trowelling disc mechanisms are separated by a certain distance, so that safe work can be ensured. However, this would result in the area between the two trowelling disc mechanisms not being capable of one-time trowelling, requiring controlled movement of the machine to trowelle the area, which is inefficient.

Disclosure of Invention

The present invention is directed to a troweling machine for a three-coat optical disc, which solves the above technical problems.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

a troweling machine for three-troweling optical discs comprises a frame, an engine, a transmission mechanism and a troweling disc mechanism; the trowelling disc mechanism comprises a worm gear reducer and a trowelling piece; the upper end of the worm gear reducer is hung on the frame, and the lower end of the worm gear reducer is connected with a trowelling rotating shaft in a power mode; a plurality of trowelling sheets are vertically arranged around the lower end of the trowelling rotating shaft, and the trowelling sheets are connected with the trowelling rotating shaft by trowelling connecting rods; taking the advancing direction as the longitudinal direction and the left-right direction as the transverse direction; the optical disk smearing mechanism is provided with three triangular arrangement, namely a front optical disk smearing mechanism, a front two optical disks smearing mechanism and a rear middle optical disk smearing mechanism; each group of trowelling discs is independently connected with the corresponding engine through power; two control levers are arranged, namely a first control lever and a second control lever; three operation transmission rotating shafts are arranged, namely a first rotating shaft, a second rotating shaft and a third rotating shaft; the first operating lever is connected with the previous trowelling disc through a first rotating shaft and a first connecting rod mechanism and controls the previous trowelling disc to swing back and forth; the first control rod is also connected with the rear middle trowelling disc through a second connecting rod mechanism, and controls the rear middle trowelling disc to swing left and right; the second control rod is connected with the front two trowelling discs through a second rotating shaft and a third connecting rod mechanism, and controls the front two trowelling discs to swing back and forth; the second rotating shaft and the third rotating shaft are connected and driven through a chain wheel mechanism; the third rotating shaft is connected with the rear middle trowelling disc through a fourth connecting rod mechanism and controls the rear middle trowelling disc to swing back and forth; the second control rod is connected with the front two trowelling discs through a fifth connecting rod mechanism and controls the front two trowelling discs to swing left and right.

The technical scheme of the invention is further improved as follows: the first connecting rod mechanism, the third connecting rod mechanism and the fourth connecting rod mechanism are identical in structure and comprise a first ball-head connecting rod, a straight connecting rod and a second ball-head connecting rod which are sequentially hinged; the first ball connecting rod is also hinged with the control transmission rotating shaft, the second ball connecting rod is hinged with one end of the rocker shaft in a ball joint manner, and the other end of the rocker shaft is fixedly connected with the trowelling disc mechanism.

The technical scheme of the invention is further improved as follows: the second connecting rod mechanism comprises an inclined connecting rod, a vertical connecting rod, a transverse ball connecting rod, a rotating shaft rod with a connecting rod and a tail end ball connecting rod which are sequentially hinged; the rotating shaft rod is symmetrically and fixedly provided with two connecting rods; the outer end of one connecting rod is hinged with a transverse ball-head connecting rod, and the outer end of the other connecting rod is hinged with a tail end ball-head connecting rod; the vertical connecting rod is fixedly connected with the frame in a rotating way and swings under the driving of the inclined connecting rod.

The technical scheme of the invention is further improved as follows: the fifth connecting rod mechanism comprises a transverse ball head connecting rod II, a short connecting rod I, a rotating rod, a short connecting rod II and a short ball head connecting rod which are connected in sequence; one end of the transverse ball-head connecting rod II is hinged with the ball head of the second control rod, and the other end of the transverse ball-head connecting rod II is hinged with the ball head of the short connecting rod I; the other end of the first short connecting rod is fixedly connected with the rotating rod; a second short connecting rod is fixedly arranged on the other side of the rotating rod, opposite to the first short connecting rod, and the other end of the second short connecting rod is hinged with the short ball head connecting rod; the other end of the short ball head connecting rod is hinged with the trowelling disc mechanism.

The technical scheme of the invention is further improved as follows: three troweling disc machines form isosceles triangle distribution; two groups of trowelling disc mechanisms are arranged on the front side, and one group of trowelling disc mechanisms are arranged on the rear side; the working areas of the three trowelling disk mechanisms are overlapped.

The technical scheme of the invention is further improved as follows: the driving motors of the three trowelling disk mechanisms are controlled by the same throttle.

The technical scheme of the invention is further improved as follows: the lower ends of the first operating rod and the second operating rod are hinged with a linkage ball connecting rod; and two ends of the linkage ball head connecting rod are respectively hinged with the lower ends of the first operating rod and the second operating rod.

By adopting the technical scheme, the invention has the following technical effects:

the invention relates to a trowelling machine for a three-trowelling optical disk, which adopts a driving control mode. The trowelling machine is characterized in that three groups of trowelling disc mechanisms are hung on a frame, and the three trowelling disc mechanisms form front-back triangular distribution. The two trowelling disk mechanisms in the front are distributed left and right, one trowelling disk mechanism is arranged in the middle of the rear, the trowelling surface can be finished in the area between the two trowelling disk mechanisms in the front, and compared with a trowelling machine of the two trowelling disk mechanisms in the prior art, the one-time trowelling work area is large, and the work efficiency is high.

The invention realizes the control of the ground contact angle of the three trowelling disk mechanisms by utilizing the control lever, the operation transmission rotating shaft and the transmission when the link mechanism is operated, thereby realizing the forward and backward actions of the trowelling machine.

The connecting rod mechanism uses a ball head hinged connection mode at a plurality of positions, so that the transmission of the control action is more flexible, and the control transmission mechanism can be arranged more flexibly.

Drawings

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

FIG. 2 is a second perspective view of the present invention;

FIG. 3 is a schematic view of three trowelling disc mechanisms and a frame of the present invention;

FIG. 4 is a top view of three trowelling disk mechanisms of the present invention;

FIG. 5 is a schematic illustration of a first of three trowelling disk mechanisms of the present invention;

FIG. 6 is a schematic diagram II of three trowelling disk mechanisms of the present invention;

FIG. 7 is a schematic diagram III of three trowelling disk mechanisms of the present invention;

FIG. 8 is a schematic view of a first, third and fourth linkage of the present invention;

FIG. 9 is a schematic view of a fifth linkage of the present invention;

FIG. 10 is a schematic illustration of a second linkage of the present invention with a rear middle trowelling tab connection;

FIG. 11 is a schematic illustration of a fourth linkage of the present invention with a rear trowelling disc connection;

the device comprises a frame 1, a worm gear reducer 3, a front polishing disc 4, a front two polishing disc 5, a rear middle polishing disc 6, a first control rod 7, a second control rod 8, a first rotating shaft 9, a second rotating shaft 10, a third rotating shaft 11, a first ball head connecting rod 12, a straight connecting rod 13, a second ball head connecting rod 14, a rocker shaft 15, an inclined connecting rod 16, a vertical connecting rod 17, a transverse ball head connecting rod 18, a rotating shaft rod 19, a connecting rod 20, a tail end ball head connecting rod 21, a transverse ball head connecting rod two, a short connecting rod 22, a short connecting rod 23, a rotating rod 24, a short connecting rod two, a short ball head connecting rod 25, a short ball head connecting rod 26, a linkage ball head connecting rod 27, a polishing sheet 28 and a polishing rotating shaft 28.

Detailed Description

The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The invention relates to a trowelling machine for a three-trowelling disc, in particular to a driving trowelling machine which is used for trowelling and finishing a concrete pavement. The trowelling machine is added with one trowelling disc on the basis of two conventional trowelling discs, and a control transmission structure is correspondingly arranged.

As shown in fig. 1 and 2, the troweling machine mainly comprises a frame 1, an engine, a transmission mechanism and a troweling disc mechanism. The frame 1 is the whole foundation of the machine, and a transmission mechanism, a control mechanism, an engine, a trowelling disc mechanism, a driving seat, an accelerator pedal and the like are arranged on the frame.

The trowelling disk mechanism includes a worm gear reducer 2 and a trowelling blade 27. The input end of the worm gear reducer 2 is connected with the power of the engine, and a belt connection transmission mode is adopted. The engine is mounted at the upper end of the frame 1, and the upper end of the worm gear reducer 2 is mounted at the lower side of the frame 1 in a hanging manner and is positioned below the corresponding engine. The lower end of the worm gear reducer 2 is provided with a trowelling rotating shaft 28 in a power connection manner. A plurality of polishing sheets 27 are vertically and circumferentially arranged at the lower end of the polishing rotating shaft 28. The trowelling shaft 28 drives the trowelling piece 27 to rotate. The worm gear reducer 2 drives the trowelling shaft 28 after realizing the deceleration of the output rotation speed. Specifically, a trowelling link is further provided, and the trowelling sheet 27 is connected with the trowelling shaft 28 by using the trowelling link. That is, the trowelling blade 27 is mounted on a trowelling link which is in turn mounted vertically on a trowelling pivot 28. The trowelling disk mechanism adopts a hanging installation mode and can swing back and forth or swing left and right. The part of the trowelling disc mechanism is arranged in a traditional mode.

In the following description, the advancing direction is taken as the longitudinal direction, and the left-right direction is taken as the transverse direction.

As shown in fig. 3 and 4, the trowelling disc mechanisms of the trowelling machine are three groups and are arranged in a triangle, and the trowelling disc mechanisms are respectively a front trowelling disc 3, a front two trowelling discs 4 and a rear middle trowelling disc 5. The rear middle trowelling disc 5 is positioned at a rear position corresponding to the middle of the front trowelling disc 3 and the front two trowelling discs 4, so that the rear middle trowelling disc 5 can trowelling and finishing a blank area between the front trowelling disc 3 and the front two trowelling discs 4 when the machine walks longitudinally. In a specific implementation, preferably, the three trowelling-disc machines constitute an isosceles triangle distribution. Wherein, set up two sets of trowelling disk mechanisms in the front side, set up a set of trowelling disk mechanism in the rear side. The working areas of the three trowelling disc mechanisms in the longitudinal advancing direction have overlapping areas, but the three trowelling disc mechanisms have no interference phenomenon of the trowelling sheets 27 in the working process.

Each group of trowelling disc mechanisms of the trowelling machine is provided with an independent engine, each group of trowelling disc mechanisms is connected with the corresponding engine through power, and three groups of engines are required to be arranged in total.

The trowelling machine is provided with two levers, a first lever 6 and a second lever 7 respectively. The control of the operating lever on the optical disk smearing mechanism is realized by the two operating levers 7 and the connecting rod mechanism. The trowelling disc mechanism is hung on the frame 1 and can swing back and forth and left and right. The control of the trowelling disc mechanism is mainly used for controlling the trowelling disc to swing back and forth and swing left and right so as to change the contact angle between the plane of the trowelling disc and the ground, thereby realizing the actions of advancing, retreating and the like.

As shown in fig. 4-7, the trowelling machine is provided with three operation transmission rotating shafts, namely a first rotating shaft 8, a second rotating shaft 9 and a third rotating shaft 10. The first lever 6 is connected to the previous wiper disc 3 through a first shaft 8 and a first link mechanism, and can be used to control the previous wiper disc 3 to swing back and forth. The first operating lever 6 can rotate the first rotating shaft 8, and the front-back rotation of the first rotating shaft 8 can be transmitted to the previous optical disc 3 through the first connecting rod mechanism, so that the previous optical disc 3 swings back and forth.

The first control rod 6 is further connected with the rear middle trowelling disc 5 through a second link mechanism, and left and right shaking of the first control rod 6 can be transmitted to the rear middle trowelling disc 5 through the second link mechanism and used for controlling the rear middle trowelling disc 5 to swing left and right.

The second lever 7 is connected to the front two wiper discs 4 via a second shaft 9 and a third link mechanism, and can be used to control the front two wiper discs 4 to swing back and forth. The second operating lever 7 can enable the second rotating shaft 9 to rotate, and the front-back rotation of the second rotating shaft 9 can be transmitted to the front trowelling disc 4 through the third link mechanism, so that the front trowelling disc swings back and forth.

The second rotating shaft 9 and the third rotating shaft 10 are connected and driven through a chain wheel mechanism, namely, chain wheels are arranged on the second rotating shaft 9 and the third rotating shaft 10, the two chain wheels are driven through a chain, and the third rotating shaft 10 can be driven to rotate through the transmission of the chain wheels and the chain. The third rotating shaft 10 is connected with the rear middle trowelling disc 5 through a fourth link mechanism; the back-and-forth rotation of the third rotating shaft 10 can control the back-and-forth swinging of the back-middle trowelling disc 5.

The second control lever 7 is connected with the front two trowelling discs 4 through a fifth link mechanism, and left and right shaking of the second control lever 7 is transmitted to the front two trowelling discs 4 through the fifth link mechanism, so that the front two trowelling discs 4 can be controlled to swing back and forth.

The lower part of the first operating lever 6 is hinged with the first rotating shaft 8, can swing left and right around a hinge point, and can also drive the first rotating shaft 8 to rotate back and forth. The two ends of the first rotating shaft 8 are rotatably connected with the frame 1.

The lower part of the second control lever 7 is hinged with the second rotating shaft 9, can swing left and right around a hinge point, and can also drive the second rotating shaft 9 to rotate back and forth. The two ends of the second rotating shaft 9 are rotatably connected with the frame 1.

The first, third and fourth link mechanisms are identical in structure, and each link mechanism comprises a first ball-head link 11, a straight link 12 and a second ball-head link 13 which are sequentially hinged. The first ball-head connecting rod 11 is also connected with the control transmission rotating shaft in a hinged manner, namely in a ball-head hinged manner with the corresponding first rotating shaft 8 and second rotating shaft 9. The other end of the first ball-head connecting rod 11 is hinged with a straight connecting rod 12, the other end of the straight connecting rod 12 is hinged with a ball head of a second ball-head connecting rod 13, and the other end of the second ball-head connecting rod 13 is hinged with one end of a rocker shaft 14. The other end of the rocker shaft 14 is fixedly connected with a trowelling disk mechanism. The ball-head connecting rod is adopted and hinged by the ball head, so that flexible control and transmission can be realized. Specifically, fig. 8 and 11 show the same. Here, the first ball-end link 11 corresponding to the fourth link mechanism is connected to the third shaft 10 in an articulated manner. The first ball-head connecting rod 11 corresponding to the first connecting rod mechanism is hinged with the first rotating shaft 8. The first ball-head connecting rod 11 corresponding to the second connecting rod mechanism is hinged with the second rotating shaft 9.

As shown in fig. 10, the second link mechanism includes an inclined link 15, a vertical link 16, a lateral ball link 17, a rotating shaft lever 18 having a connecting rod 19, and a terminal ball link 20, which are hinged in order. One end of the oblique connecting rod 15 is hinged with the first operating rod 6, and is in the same hinged connection position with the left-right swinging hinge point of the first operating rod 6. When the first lever 6 swings left and right, the tilt link 15 can be rotated about the hinge point. During operation, the tilt link 15 is rotated about its own axis. The other end of the oblique connecting rod 15 is hinged with the vertical connecting rod 16, the upper end of the vertical connecting rod 16 is rotatably connected with the frame 1, the connecting point of the oblique connecting rod 15 and the vertical connecting rod 16 is the same point with the rotating connecting point of the vertical connecting rod and the frame 1, and when the oblique connecting rod 15 rotates, the vertical connecting rod 16 can transversely swing left and right by taking the rotating connecting point as the center. Under the rotation of the diagonal link 15, the swinging drive for the vertical link 16 is achieved. The lower end of the vertical connecting rod 16 is a swinging end and is hinged with a transverse ball connecting rod 17. The other end of the transverse ball-head connecting rod is connected with the rotating shaft rod 18; specifically, two connecting rods 19 are symmetrically and vertically fixedly arranged on two sides of the rotating shaft rod 18 to form an integrated structure; the outer end of one connecting rod 19 is hinged with a transverse ball connecting rod 21, and the outer end of the other connecting rod 19 is hinged with a tail end ball connecting rod 20. The outermost end of the end ball connecting rod 20 is connected with the rear middle trowelling disc 5, and drives and controls the rear middle trowelling disc 5 to swing left and right.

As shown in fig. 9, the fifth link mechanism includes a transverse ball-end link two 21, a short link one 22, a rotating lever 23, a short link two 24, and a short ball-end link 25, which are sequentially connected. The fifth link mechanism is used for controlling the left-right swing of the front two wiper discs 4. One end of the transverse ball-head connecting rod II 21 is hinged with the ball head at the lower end of the second control rod 7, and the other end of the transverse ball-head connecting rod II 21 is hinged with the ball head of the short connecting rod I22; the other end of the first short connecting rod 22 is fixedly connected with a rotating rod 23; the other side of the rotating rod 23 opposite to the first short connecting rod 22 is fixedly provided with a second short connecting rod 24, and the first short connecting rod 22 and the second short connecting rod 24 are perpendicular to the rotating rod 23. The other end of the second short connecting rod 24 is hinged with a short ball head connecting rod 25; the other end of the short ball-head connecting rod 25 is hinged with the trowelling disc mechanism. The whole extending direction and the transmission direction of the fifth link mechanism are both left and right directions, and the left and right swinging of the second control lever 7 can be transmitted to the front two trowelling discs 4, so that the front two trowelling discs 4 can swing left and right.

In a specific implementation, a linkage ball-joint connecting rod 26 may be hinged at the lower ends of the first operating rod 6 and the second operating rod 7, so as to realize linkage when the first operating rod 6 and the second operating rod 7 swing left and right. Specifically, as shown in fig. 6 and 7, two ends of the linkage ball-end connecting rod 26 are respectively hinged with the lower ends of the first operating rod 6 and the second operating rod 7.

When the machine is used in a manipulation, the first control lever 6 and the second control lever 7 swing left and right and back and forth, and the swing amplitude does not need to be particularly large. The control mechanism of the machine can be realized.

In a specific implementation, the driving motors of the three trowelling disc mechanisms of the trowelling machine are controlled by the same accelerator to realize the rotation speed synchronization of the three trowelling disc mechanisms.

The connecting rods and the like used in the machine are generally required to be correspondingly arranged on the frame for mounting if the connecting rods and the like are required to be connected with the frame.

The invention relates to a trowelling machine for three-trowelling optical discs, which adopts a driving control mode. Three troweling disk machines form front-back triangular distribution. The trowelling disc mechanism located in the middle of the rear can trowelle the area between the two trowelling disc mechanisms in front, and the trowelling machine has a large one-time trowelling working area and high working efficiency.

The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A troweling machine for three-troweling optical discs comprises a frame (1), an engine, a transmission mechanism and a troweling disc mechanism; the trowelling disc mechanism comprises a worm gear reducer (2) and a trowelling sheet (27); the upper end of the worm gear reducer (2) is hung and installed on the frame (1), and the lower end of the worm gear reducer is connected with a trowelling rotating shaft (28) in a power mode; a plurality of trowelling sheets (27) are vertically and circumferentially arranged at the lower end of the trowelling rotating shaft (28), and the trowelling sheets (27) are connected with the trowelling rotating shaft (28) by using trowelling connecting rods; taking the advancing direction as the longitudinal direction and the left-right direction as the transverse direction; the method is characterized in that: the optical disk smearing mechanism is provided with three triangular arrangements, namely a front optical disk smearing mechanism (3), a front two optical disks smearing mechanism (4) and a rear middle optical disk smearing mechanism (5); each group of trowelling discs is independently connected with the corresponding engine through power; two control levers are arranged, namely a first control lever (6) and a second control lever (7); three operation transmission rotating shafts are arranged, namely a first rotating shaft (8), a second rotating shaft (9) and a third rotating shaft (10); the first operating rod (6) is connected with the previous optical disk (3) through a first rotating shaft (8) and a first connecting rod mechanism to control the previous optical disk (3) to swing back and forth; the first control rod (6) is also connected with the rear middle trowelling disc (5) through a second link mechanism, and controls the rear middle trowelling disc (5) to swing left and right; the second operating rod (7) is connected with the front two wiper discs (4) through a second rotating shaft (9) and a third connecting rod mechanism, and controls the front two wiper discs (4) to swing back and forth; the second rotating shaft (9) and the third rotating shaft (10) are connected and driven through a chain wheel mechanism; the third rotating shaft (10) is connected with the rear middle trowelling disc (5) through a fourth connecting rod mechanism, and controls the rear middle trowelling disc (5) to swing back and forth; the second control rod (7) is connected with the front two wiper discs (4) through a fifth link mechanism and controls the front two wiper discs (4) to swing left and right.

2. A troweling machine for a three-coat optical disc according to claim 1, wherein: the first connecting rod mechanism, the third connecting rod mechanism and the fourth connecting rod mechanism are identical in structure and comprise a first ball-head connecting rod (11), a straight connecting rod (12) and a second ball-head connecting rod (13) which are sequentially hinged; the first ball connecting rod (11) is also hinged with the control transmission rotating shaft, the second ball connecting rod (13) is hinged with one end of the rocker (14) in a ball head mode, and the other end of the rocker (14) is fixedly connected with the trowelling disc mechanism.

3. A troweling machine for a three-coat optical disc according to claim 1, wherein: the second link mechanism comprises an inclined link (15), a vertical link (16), a transverse ball-head link (17), a rotating shaft rod (18) with a connecting rod (19) and a tail end ball-head link (20) which are hinged in sequence; the rotating shaft lever (18) is symmetrically and fixedly provided with two connecting rods (19); the outer end of one connecting rod (19) is hinged with a transverse ball connecting rod (21), and the outer end of the other connecting rod (19) is hinged with a tail end ball connecting rod (20); the vertical connecting rod (16) is rotationally connected and fixed with the frame (1), and swings under the drive of the inclined connecting rod (15).

4. A troweling machine for a three-coat optical disc according to claim 1, wherein: the fifth connecting rod mechanism comprises a transverse ball head connecting rod II (21), a short connecting rod I (22), a rotating rod (23), a short connecting rod II (24) and a short ball head connecting rod (25) which are connected in sequence; one end of the transverse ball-head connecting rod II (21) is hinged with the ball head of the second control rod (7), and the other end of the transverse ball-head connecting rod II is hinged with the ball head of the short connecting rod I (22); the other end of the first short connecting rod (22) is fixedly connected with the rotating rod (23); a second short connecting rod (24) is fixedly arranged on the other side of the rotating rod (23) relative to the first short connecting rod (22), and the other end of the second short connecting rod (24) is hinged with a short ball head connecting rod (25); the other end of the short ball head connecting rod (25) is hinged with the trowelling disc mechanism.

5. A troweling machine for a three-coat optical disc according to claim 1, wherein: three troweling disc machines form isosceles triangle distribution; two groups of trowelling disc mechanisms are arranged on the front side, and one group of trowelling disc mechanisms are arranged on the rear side; the working areas of the three trowelling disk mechanisms are overlapped.

6. A troweling machine for a three-coat optical disc according to claim 1, wherein: the driving motors of the three trowelling disk mechanisms are controlled by the same throttle.

7. A troweling machine for a three-coat optical disc according to claim 1, wherein: the lower ends of the first control rod (6) and the second control rod (7) are hinged with a linkage ball-head connecting rod (26); two ends of the linkage ball-head connecting rod (26) are respectively hinged with the lower ends of the first operating rod (6) and the second operating rod (7).