WO2023151323A1

WO2023151323A1 - Finger-type sheet mechanism having active expansion and contraction function of agricultural radial tire building machine

Info

Publication number: WO2023151323A1
Application number: PCT/CN2022/129784
Authority: WO
Inventors: 张晓辰; 丁倩; 孙博; 李宝龙
Original assignee: 天津赛象科技股份有限公司
Priority date: 2022-02-14
Filing date: 2022-11-04
Publication date: 2023-08-17
Also published as: CN114454531A; CN114454531B

Abstract

A finger-type sheet mechanism having an active expansion and contraction function of an agricultural radial tire building machine, comprising a rack (1) and a plurality of expansion and contraction mechanisms (2) mounted on the rack at equal intervals. The rack (1) is composed of a moving assembly (101), a height adjustment assembly (102), and a driving assembly (103). The height adjustment assembly (102) is fixedly mounted at the top of the moving assembly (101), and the driving assembly (103) is mounted at the top of the height adjustment assembly (102), wherein the moving assembly (101) comprises a moving seat (1011), and moving wheels (1012) are fixedly mounted at the four corners of the bottom of the moving seat (1011). By actively controlling the expansion and contraction of finger-type sheets by controlling the extension and retraction of an electric cylinder, the finger type sheets are prevented from being in a bending stress and friction state for a long time, and the service life of the finger-type sheets can be prolonged. Given a long processing period and high cost of finger-type sheets, maintenance shutdown time and cost of spares can also be reduced for a client, and the height of the finger-type sheet mechanism can be adjusted during use, thereby greatly improving practicability.

Description

A finger mechanism of agricultural radial tire building machine with active expansion and contraction function

technical field

The invention relates to the technical field of radial tire production, in particular to a finger mechanism of an agricultural radial tire building machine with active expansion and contraction functions.

Background technique

Radial tires are a structural form of tires, which are different from bias tires, arched tires, pressure-regulated tires, etc. The international code name of radial tire is "R", commonly known as "steel wire tire".

During the tire building process, the bead needs to be inserted into the outer circle of the carcass tube, and the rubber material on the edge of the carcass tube is turned over to wrap the bead through the turning-up process to achieve seamless interface processing in the tire production process. Improve tire stability and quality. For agricultural radial tire building machines, the diameter of the inner opening of the bead is smaller than the diameter of the outer circle of the carcass tube, so a finger mechanism is required to insert the bead into the outer circle of the carcass tube. The rubber material on both sides of the carcass tube is wrapped and the diameter after wrapping must be smaller than the diameter of the bead to realize the inserting of the bead.

The finger mechanism is mainly used in the wrapping process of the tire building equipment. It is composed of multiple arc-shaped fingers to form a circle, which is evenly distributed around the main shaft of the building drum. With one end of the finger as the axis, the umbrella can be opened and closed. Generally, there are two sets of finger mechanism in the forming equipment, which are respectively arranged on both sides of the forming drum. After the composite parts of the carcass tube on the forming drum are laminated, before the bead is placed on the outer circle of the carcass tube , the two side edges of the carcass tube composite are wrapped by the finger-shaped piece mechanism, and then the push ring discs on both sides move the bead along the outer surface of the finger-shaped piece along the axial direction of the main shaft, and insert the bead into the carcass on the outer circle of the cylinder.

The finger mechanism of the agricultural radial tire building machine in the prior art uses the elastic force of the spring itself to provide power, does not have the function of active expansion and contraction, and the finger is subjected to bending stress for a long time during use, which results in a long service life of the finger. It is greatly shortened, and at the same time, the spring will gradually lose its elasticity when it is in a tight state for a long time. The spring needs to be replaced regularly to ensure the normal use of the structure, and the practicability is poor.

Contents of the invention

The technical task of the present invention is to address the above deficiencies and provide an agricultural radial tire building machine finger mechanism with an active expansion and contraction function, which actively controls the expansion and contraction of the finger by controlling the expansion and contraction of the electric cylinder, avoiding the expansion and contraction of the finger. Long-term exposure to bending stress and friction can increase the service life of the fingers. In view of the long processing cycle and high cost of the fingers, it can also reduce downtime maintenance time and spare parts costs for customers, and can be used during use. The height adjustment of the finger mechanism greatly increases the practicability of the present invention and solves the above problems.

Technical scheme of the present invention is realized like this:

A finger mechanism of an agricultural radial tire building machine with an active expansion and contraction function, comprising: a frame and several expansion and contraction mechanisms mounted equidistantly on the frame;

Wherein, the frame is composed of a moving assembly, a lifting assembly and a driving assembly, the lifting assembly is fixedly installed on the top of the moving assembly, and the driving assembly is installed on the top of the lifting assembly.

In the aforementioned finger mechanism of an agricultural radial tire building machine with active expansion and contraction functions, the moving assembly includes a moving seat, and moving wheels are fixedly installed at four corners of the bottom of the moving seat.

The above-mentioned finger plate mechanism of agricultural radial tire building machine with active expansion and contraction function, wherein the lifting assembly includes a mounting base, a servo motor, a threaded shaft, a threaded sleeve, a lifting plate and two support rods, the mounting The bottom of the seat is fixedly connected to the top of the moving seat, the bottom of the servo motor is fixedly installed at the center of the top of the mounting seat, and the bottom of the threaded shaft is fixedly installed on the output shaft of the servo motor. The threaded sleeve is threadedly installed on the threaded shaft, and the inner ring of the threaded sleeve is provided with an internal thread meshing with the threaded shaft, the lifting plate is fixedly installed on the threaded sleeve, and the two The support rods are symmetrically connected to both sides of the top of the lifting plate.

The above-mentioned finger mechanism of agricultural radial tire building machine with active expansion and contraction function, wherein, the driving assembly includes a ring plate, two mounting ears, two electric cylinders, two driving rods and a driving ring. The bottom of the ring plate is fixedly connected to the tops of the two support rods, the two mounting ears are symmetrically connected to the edge of the ring plate, and the two electric cylinders are respectively fixedly mounted on the two mounting ears , the output end of the electric cylinder is movable through the installation ear, one end of the two driving rods is fixedly connected to the output ends of the two electric cylinders, and the driving ring is fixedly connected to the two the other end of the drive rod.

The above-mentioned finger mechanism of agricultural radial tire building machine with active expansion and contraction function, wherein the expansion and contraction mechanism is composed of a first mounting seat, a finger body, a second mounting seat, a connecting rod, and a first pin 1. The second pin shaft and the third pin shaft; the finger body is a plurality of arc-shaped structures, and the plurality of finger body bodies form a cylinder adapted to the tire;

Wherein, the mounting ends of the finger body are respectively provided with a first mounting hole and a second mounting hole;

Wherein, the first mounting hole on the finger body is rotatably mounted on the first mounting seat through the first pin shaft, the first mounting seat is mounted on the ring plate, and the connecting rod One end of the connecting rod is rotatably mounted on the second mounting hole on the finger body through the second pin shaft, and the other end of the connecting rod is rotatably mounted on the second mounting base through the third pin shaft , and the second mount is installed on the drive ring.

The above-mentioned finger mechanism of agricultural radial tire building machine with active expansion and contraction function, wherein the lifting assembly further includes positioning rods symmetrically connected to both sides of the bottom of the mounting seat, and the surface of the positioning rod is slidingly connected to There is a positioning sleeve, the side of the positioning sleeve close to the lifting plate is fixedly connected to the side of the lifting plate, and the lifting assembly also includes a connecting plate fixedly connected to the top of the two positioning rods.

The above-mentioned finger mechanism of agricultural radial tire building machine with active expansion and contraction function, wherein, the top of the threaded shaft is rotatably connected to the bottom of the connecting plate through a ball bearing, and the side of the support rod is provided with a The connecting plate is matched with the through groove, and the connecting plate is slidably arranged with the inner wall of the through groove.

The above-mentioned finger mechanism of agricultural radial tire building machine with active expansion and contraction function, wherein, the drive assembly further includes a linear optical axis fixedly connected to the side of the drive ring, and the surface of the linear optical axis is slidably set There is a linear bearing, and the side of the linear bearing close to the ring plate is fixedly connected with the ring plate.

The above-mentioned finger mechanism of agricultural radial tire building machine with active expansion and contraction function, wherein, the first mounting seat is fixedly installed on the ring plate through the first mounting bolt, and the second mounting seat is fixed on the ring plate through the first mounting bolt. Two mounting bolts are fixedly mounted on the sides of the drive ring.

The above-mentioned finger mechanism of agricultural radial tire building machine with active expansion and contraction function, wherein, the end surface of the finger body is set in an arc shape.

Compared with prior art, advantage and positive effect of the present invention are:

1. In the present invention, the set moving assembly is composed of a moving seat and a moving wheel, which facilitates the movement of the finger mechanism of the present invention, thereby facilitating the operation of the staff;

2. In the present invention, the lifting assembly is composed of a mounting seat, a servo motor, a threaded shaft, a threaded sleeve, a lifting plate and two support rods, which is convenient for lifting and adjusting the finger mechanism of the present invention, thereby facilitating the use of the staff , and then improve the practicability of the finger mechanism of the present invention;

3. In the present invention, the set drive assembly is composed of a ring plate, two mounting ears, two electric cylinders, two drive rods and a drive ring, and the set expansion and contraction mechanism is composed of a first mounting seat, a finger body, a second It is composed of mounting base, connecting rod, first pin, second pin and third pin. The electric cylinder is used to actively control the expansion and contraction of the finger body, which greatly facilitates the staff to adjust the bead of the radial tire. Inserted and installed through multiple pin shafts, it is convenient to replace the finger body.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is a schematic structural view of the finger mechanism of an agricultural radial tire building machine with an active expansion and contraction function according to an embodiment of the present invention;

Fig. 2 is a structural schematic diagram of another perspective of the finger mechanism of the agricultural radial tire building machine with active expansion and contraction function according to an embodiment of the present invention;

Fig. 3 is a schematic structural view of the frame in the finger mechanism of the agricultural radial tire building machine with active expansion and contraction function according to an embodiment of the present invention;

Fig. 4 is a structural schematic diagram of the moving assembly in the finger mechanism of the agricultural radial tire building machine with active expansion and contraction function according to an embodiment of the present invention;

Fig. 5 is a structural schematic diagram of the lifting assembly in the finger mechanism of the agricultural radial tire building machine with active expansion and contraction function according to an embodiment of the present invention;

Fig. 6 is a schematic structural view of the driving assembly in the finger mechanism of the agricultural radial tire building machine with active expansion and contraction function according to an embodiment of the present invention;

Fig. 7 is a structural schematic diagram of the expansion and contraction mechanism in the finger mechanism of the agricultural radial tire building machine with active expansion and contraction function according to an embodiment of the present invention;

Fig. 8 is a schematic diagram of the exploded structure of the expansion and contraction mechanism in the finger mechanism of the agricultural radial tire building machine with active expansion and contraction function according to an embodiment of the present invention;

Fig. 9 is a schematic diagram of the combined structure of the driving assembly and the expansion-contraction mechanism in the finger mechanism of the agricultural radial tire building machine with active expansion-contraction function according to an embodiment of the present invention.

In the picture:

1. Rack; 101. Moving component; 102. Lifting component; 103. Driving component; 1011. Moving seat; 1012. Moving wheel; 1021. Mounting seat; 1022. Servo motor; 1023. Thread shaft; 1024. Thread sleeve; 1025, lifting plate; 1026, support rod; 1027, positioning rod; 1028, positioning sleeve; 1029, connecting plate; 1031, ring plate; 1032, mounting ear; 1033, electric cylinder; 1034, driving rod; 1035, driving ring; 1036, linear optical axis; 1037, linear bearing

2. Expansion and contraction mechanism; 201, first mounting seat; 202, finger body; 2021, first mounting hole; 2022, second mounting hole; 203, second mounting seat; 204, connecting rod; 205, first Pin shaft; 206, the second pin shaft; 207, the third pin shaft.

Detailed ways

In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Example 1

As shown in Figures 1-9, a finger mechanism of an agricultural radial tire building machine with active expansion and contraction function according to an embodiment of the present invention includes a frame 1 and several equidistantly installed on the frame 1 Expansion and contraction mechanism 2;

Wherein, the frame 1 is composed of a moving assembly 101, a lifting assembly 102 and a driving assembly 103, the lifting assembly 102 is fixedly installed on the top of the moving assembly 101, and the driving assembly 103 is installed on the top of the lifting assembly 102. top;

Wherein, the moving assembly 101 includes a moving seat 1011, and the four corners of the bottom of the moving seat 1011 are fixedly equipped with moving wheels 1012;

Wherein, the lifting assembly 102 includes a mounting base 1021, a servo motor 1022, a threaded shaft 1023, a threaded sleeve 1024, a lifting plate 1025 and two support rods 1026, and the bottom of the mounting base 1021 is fixedly connected to the bottom of the moving base 1011. top, the bottom of the servo motor 1022 is fixedly installed at the center of the top of the mounting seat 1021, the bottom of the threaded shaft 1023 is fixedly installed on the output shaft of the servo motor 1022, and the threaded sleeve 1024 is screwed on On the threaded shaft 1023, and the inner ring of the threaded sleeve 1024 is provided with an internal thread that engages with the threaded shaft 1023, the lifting plate 1025 is fixedly installed on the threaded sleeve 1024, and the two The support rods 1026 are symmetrically connected to both sides of the top of the lifting plate 1025;

Wherein, the drive assembly 103 includes a ring plate 1031, two mounting ears 1032, two electric cylinders 1033, two drive rods 1034 and a drive ring 1035, the bottom of the ring plate 1031 is fixedly connected to the two support rods 1026, the two mounting ears 1032 are symmetrically connected to the edge of the ring plate 1031, and the two electric cylinders 1033 are respectively fixedly installed on the two mounting ears 1032, and the output of the electric cylinder 1033 One end of the two driving rods 1034 is fixedly connected to the output ends of the two electric cylinders 1033, and the driving ring 1035 is fixedly connected to the two driving rods 1034. the other end of

Wherein, the expansion and contraction mechanism 2 is composed of a first mounting base 201, a finger body 202, a second mounting base 203, a connecting rod 204, a first pin shaft 205, a second pin shaft 206 and a third pin shaft 207; The finger body 202 is a plurality of arc-shaped structures, and the plurality of finger bodies form a cylinder suitable for the tire;

Wherein, the mounting ends of the finger body 202 are respectively provided with a first mounting hole 2021 and a second mounting hole 2022;

Wherein, the first mounting hole 2021 on the finger body 202 is rotatably mounted on the first mounting seat 201 through the first pin shaft 205, and the first mounting seat 201 is mounted on the ring plate 1031 Above, one end of the connecting rod 204 is rotatably mounted on the second mounting hole 2022 on the finger body 202 through the second pin shaft 206, and the other end of the connecting rod 204 is passed through the third pin The shaft 207 is rotatably mounted on the second mount 203 , and the second mount 203 is mounted on the drive ring 1035 .

By adopting the above-mentioned technical scheme, the expansion and contraction of the finger-shaped sheet is actively controlled by controlling the expansion and contraction of the electric cylinder, so as to avoid the long-term bending stress and friction of the finger-shaped sheet, which can improve the service life of the finger-shaped sheet. The processing cycle is long and the cost is high, which can also reduce downtime and maintenance time for customers and reduce the cost of spare parts, and the height of the finger mechanism can be adjusted during use, thereby greatly increasing the practicability of the present invention;

Wherein, the lifting assembly 102 is composed of a mounting base 1021, a servo motor 1022, a threaded shaft 1023, a threaded sleeve 1024, a lifting plate 1025 and two support rods 1026, which is convenient for lifting and adjusting the finger mechanism of the present invention, thereby facilitating the staff The use of, and then improved the practicability of finger piece mechanism of the present invention;

Among them, the driving assembly 103 is composed of a ring plate 1031, two mounting ears 1032, two electric cylinders 1033, two driving rods 1034 and a driving ring 1035, and the expansion and contraction mechanism 2 provided is composed of a first mounting seat 201, a finger body 202, the second mounting seat 203, the connecting rod 204, the first pin 205, the second pin 206 and the third pin 207, and the electric cylinder 1033 is used to actively control the expansion and contraction of the finger body 202, which is extremely large It is convenient for the staff to insert the bead of the radial tire, and it is installed through a plurality of pin shafts, which facilitates the replacement of the finger body 202 .

Example 2

As shown in Figures 1-4, the difference between this embodiment and Embodiment 1 is that the moving wheel 1012 is a universal wheel.

By adopting the above technical solution, it is convenient to move the finger mechanism of the present invention, thereby facilitating the operation of the staff.

Example 3

As shown in Figures 1-5, the difference between this embodiment and Embodiment 2 is that the lifting assembly 102 also includes positioning rods 1027 symmetrically connected to both sides of the bottom of the mounting base 1021, and the positioning rods 1027 The surface is slidingly connected with a positioning sleeve 1028, and the side of the positioning sleeve 1028 close to the lifting plate 1025 is fixedly connected with the side of the lifting plate 1025. The lifting assembly 102 also includes two positioning rods 1027 fixedly connected The connecting plate 1029 at the top, the top of the threaded shaft 1023 is rotatably connected with the bottom of the connecting plate 1029 through a ball bearing, the side of the support rod 1026 is provided with a through groove suitable for the connecting plate 1029, and the The connecting plate 1029 is slidably arranged with the inner wall of the through groove.

By adopting the above-mentioned technical solution, the lifting assembly 102 is limited, thereby increasing the stability of the height adjustment of the expansion-contraction mechanism 2 .

Example 4

As shown in Figures 1-7, the difference between this embodiment and Embodiment 3 is that the driving assembly 103 also includes a linear optical axis 1036 fixedly connected to the side of the driving ring 1035, and the linear optical axis 1036 A linear bearing 1037 is provided slidingly on the surface, and a side of the linear bearing 1037 close to the ring plate 1031 is fixedly connected with the ring plate 1031 .

By adopting the above-mentioned technical solution, the driving ring 1035 is limited, and the stability of the driving ring 1035 is increased, thereby improving the stability of the expansion and contraction of the finger body 202 of the present invention.

Example 5

As shown in Figures 1-8, the difference between this embodiment and Embodiment 4 is that the first mounting base 201 is fixedly installed on the ring plate 1031 through the first mounting bolts, and the second mounting base 203 The second mounting bolt is fixedly installed on the side of the driving ring 1035 , and the end surface of the finger body 202 is arranged in an arc shape.

By adopting the above technical solution, it is convenient to disassemble and assemble the expansion-contraction mechanism 2, and by setting the arc-shaped finger body 202, scratches to the bead are avoided, thereby improving the practicability of the present invention.

In order to facilitate the understanding of the above-mentioned technical solution of the present invention, the working principle or operation mode of the present invention in the actual process will be described in detail below.

In actual application, the device is moved to an appropriate position through the moving wheel 1012 under the moving seat 1011, and then the electric cylinder 1033 is opened to drive the driving ring 1035 to move in a direction close to the ring plate 1031 through the driving rod 1034, so that the connecting rod 204 Under the linkage action of the finger body 202, the finger body 202 is moved to the extended state, and then the end of the carcass tube is wrapped by several finger body bodies 202. At this time, the electric cylinder 1033 is driven in reverse, so that several fingers The shape sheet body 202 compresses the carcass tube to make it smaller, and then the bead can be easily set on the carcass tube; and the height adjustment of the expansion and contraction mechanism 2 is facilitated by setting the lifting assembly 102, thereby improving the index of the present invention. The suitability of the sheet mechanism.

Through the above specific implementation manners, those skilled in the technical field can easily realize the present invention. However, it should be understood that the present invention is not limited to the specific embodiments described above. On the basis of the disclosed embodiments, those skilled in the art can arbitrarily combine different technical features, so as to realize different technical solutions.

Claims

A finger mechanism of an agricultural radial tire building machine with an active expansion and contraction function, characterized in that it comprises: a frame (1) and several expansion and contraction mechanisms (2) equidistantly installed on the frame (1) );

Wherein, the frame (1) is composed of a moving assembly (101), a lifting assembly (102) and a driving assembly (103), and the lifting assembly (102) is fixedly installed on the top of the moving assembly (101), so The driving assembly (103) is installed on the top of the lifting assembly (102).
The finger mechanism of an agricultural radial tire building machine with an active expansion and contraction function according to claim 1, wherein the moving assembly (101) includes a moving seat (1011), and the moving seat (1011) Moving wheels (1012) are fixedly installed at the four corners of the bottom.
The finger mechanism of an agricultural radial tire building machine with an active expansion and contraction function according to claim 2, wherein the lifting assembly (102) includes a mounting seat (1021), a servo motor (1022), a screw thread Shaft (1023), threaded sleeve (1024), lifting plate (1025) and two support rods (1026), the bottom of the mounting base (1021) is fixedly connected to the top of the moving base (1011), and the servo The bottom of the motor (1022) is fixedly installed at the center of the top of the mounting seat (1021), the bottom of the threaded shaft (1023) is fixedly installed on the output shaft of the servo motor (1022), and the threaded sleeve ( 1024) is threadedly mounted on the threaded shaft (1023), and the inner ring of the threaded sleeve (1024) is provided with an internal thread meshing with the threaded shaft (1023), and the lifting plate (1025) is fixed Installed on the threaded sleeve (1024), the two support rods (1026) are symmetrically connected to both sides of the top of the lifting plate (1025).
The finger mechanism of an agricultural radial tire building machine with an active expansion and contraction function according to claim 3, wherein the drive assembly (103) includes a ring plate (1031) and two mounting ears (1032) , two electric cylinders (1033), two driving rods (1034) and a driving ring (1035), the bottom of the ring plate (1031) is fixedly connected to the tops of the two supporting rods (1026), the two The mounting ears (1032) are symmetrically connected to the edge of the ring plate (1031), and the two electric cylinders (1033) are respectively fixedly installed on the two mounting ears (1032), and the electric cylinders (1033 )’s output end is movable through the installation ear (1032), and one end of the two driving rods (1034) is respectively fixedly connected to the output ends of the two electric cylinders (1033), and the driving ring (1035 ) is fixedly connected to the other end of the two driving rods (1034).
The finger mechanism of an agricultural radial tire building machine with active expansion and contraction function according to claim 4, characterized in that the expansion and contraction mechanism (2) consists of a first mounting seat (201), a finger body (202), the second mount (203), connecting rod (204), the first pin (205), the second pin (206) and the third pin (207); the finger body ( 202) is a plurality of arc-shaped structures, and a plurality of said finger-shaped sheet bodies surround a cylinder adapted to the tire;

Wherein, the mounting ends of the finger body (202) are respectively provided with a first mounting hole (2021) and a second mounting hole (2022);

Wherein, the first mounting hole (2021) on the finger body (202) is rotatably mounted on the first mounting seat (201) through the first pin shaft (205), and the first mounting seat (201) is installed on the ring plate (1031), and one end of the connecting rod (204) is rotated and installed on the finger body (202) through the second pin shaft (206). hole (2022), the other end of the connecting rod (204) is rotatably mounted on the second mount (203) through the third pin (207), and the second mount (203) Installed on the drive ring (1035).
The finger mechanism of an agricultural radial tire building machine with an active expansion and contraction function according to claim 3, wherein the lifting assembly (102) also includes two symmetrically connected bottoms of the mounting seat (1021). The positioning rod (1027) on the side, the surface of the positioning rod (1027) is slidingly connected with a positioning sleeve (1028), and the side of the positioning sleeve (1028) close to the lifting plate (1025) is connected to the lifting plate ( 1025), the lifting assembly (102) also includes a connecting plate (1029) fixedly connected to the top of the two positioning rods (1027).
The finger mechanism of an agricultural radial tire building machine with active expansion and contraction function according to claim 4, characterized in that, the top of the threaded shaft (1023) is connected to the connecting plate (1029) through a ball bearing The bottom is rotatably connected, and the side of the support rod (1026) is provided with a through groove matching the connecting plate (1029), and the connecting plate (1029) is slidingly arranged on the inner wall of the through groove.
The finger mechanism of an agricultural radial tire building machine with active expansion and contraction function according to claim 4, characterized in that, the drive assembly (103) also includes a ring fixedly connected to the side of the drive ring (1035) A linear optical axis (1036), the surface of the linear optical axis (1036) is slidingly provided with a linear bearing (1037), and the side of the linear bearing (1037) close to the ring plate (1031) is in contact with the ring plate (1031) Fixed connection.
The finger mechanism of an agricultural radial tire building machine with an active expansion and contraction function according to claim 5, characterized in that the first mounting seat (201) is fixedly installed on the ring plate by first mounting bolts (1031), the second installation seat (203) is fixedly installed on the side of the drive ring (1035) through a second installation bolt.
The finger mechanism of an agricultural radial tire building machine with an active expansion and contraction function according to claim 5, wherein the end surface of the finger body (202) is set in an arc shape.