CN213975722U

CN213975722U - Double-guide-rail synchronous transmission system

Info

Publication number: CN213975722U
Application number: CN202022856593.5U
Authority: CN
Inventors: 施勤飞
Original assignee: Guangdong Huisider Automation Technology Co ltd
Current assignee: Guangdong Huisider Automation Technology Co ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-08-17
Anticipated expiration: 2030-12-01

Abstract

The utility model relates to a double-guide-rail synchronous transmission system, which comprises two bases which are oppositely arranged, wherein each base is respectively provided with a closed-loop guide rail, and the two closed-loop guide rails are oppositely arranged; the inner side of the closed-loop guide rail is provided with a driving chain wheel and a driven chain wheel, the driving chain wheel is connected with the driven chain wheel through a closed-loop chain, the closed-loop chain is connected with a sliding seat, the sliding seat is provided with a pulley matched with the closed-loop guide rail, the two sliding seats arranged on the two bases are connected through a jig plate, and the two driving chain wheels arranged on the two bases are in synchronous linkage; still be furnished with positioning mechanism between two bases, the positioning mechanism both sides are equipped with spacing portion respectively, and spacing portion rotates with positioning mechanism and sets up, and the slide is equipped with spacing portion complex spacing groove, spacing groove and spacing portion cooperation are in order to realize the accurate positioning to the tool board. The double-guide-rail transmission system not only realizes highly synchronous transmission at two ends of the jig plate positioned on the two closed-loop guide rails, but also realizes accurate positioning of the jig plate by utilizing the positioning mechanism, and has higher use value.

Description

Double-guide-rail synchronous transmission system

Technical Field

The utility model relates to a transmission machinery technical field, in particular to double guide rail synchronous transmission system.

Background

With the increasing development of science and technology, the demand of various industries on workpiece transmission is larger and higher, and the requirements are also higher and higher. In the production process of manufacturing, processing, testing and the like of products, the application of the transmission track is increasingly wide. The existing conveying track mainly comprises a single-track conveying and a double-track conveying. The monorail transmission structure is relatively simple, convenient to control and maintain and low in installation cost, but the transmission stability is relatively poor, the mechanical bearing capacity is low, and stable transmission and online processing of high-quality products are not facilitated. The double-track transmission can provide higher mechanical bearing capacity and realize stable transmission of large-quality products, but the difficulty is higher when the two tracks in the double-track transmission are controlled to be completely synchronously transmitted, and the control cost is higher. Above all, in double track way transmission course, because tool board both ends set up respectively on the track of difference, the span is great for the positioning accuracy and the stability homogeneous phase of tool board in processing station department are relatively poor, and do not do benefit to operating personnel to realize high accuracy processing to the product on the tool board. In view of this, it is very important to develop a dual-guide-rail synchronous transmission system, so as to improve the accurate positioning of the jig plate while realizing the stable transmission of the product.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model provides a double-guide-rail synchronous transmission system, which comprises two bases which are oppositely arranged, wherein each base is respectively provided with a closed-loop guide rail, and the two closed-loop guide rails on the two bases are oppositely arranged; a driving chain wheel and a driven chain wheel are arranged on the inner side of the closed-loop guide rail in a matching mode, the driving chain wheel is connected with the driven chain wheel through a closed-loop chain, a sliding seat is connected onto the closed-loop chain, the sliding seat is provided with a pulley matched with the closed-loop guide rail, two sliding seats arranged on the two bases are connected through a jig plate, and the two driving chain wheels arranged on the two bases are synchronously linked to drive the two ends of the jig plate to synchronously drive on the two closed-loop guide rails; a positioning mechanism is further arranged between the two bases, limiting parts are arranged on two sides of the positioning mechanism respectively, the limiting parts are arranged in a rotating mode with the positioning mechanism, limiting grooves matched with the limiting parts are formed in the sliding seat, and the limiting grooves are matched with the limiting parts to achieve accurate positioning of the jig plate.

Furthermore, the positioning mechanism comprises two cylinders which are arranged in a back-to-back manner, and the telescopic ends of the two cylinders respectively correspond to the two bases; the flexible end of cylinder even has the drive block, the flexible end fixed connection of drive block one side and cylinder, the fixed connecting rod that is provided with of opposite side, the connecting rod rotates and sets up on the base, still be equipped with the connecting block on the connecting rod, fixed the setting on connecting rod of connecting block one side, the opposite side even has spacing portion.

Furthermore, the base is provided with mounting plates at positions corresponding to the two ends of the connecting rod respectively, the mounting plates are provided with mounting holes, and the two ends of the connecting rod are rotatably arranged with the two mounting holes respectively.

Furthermore, the slide is equipped with spacing seat in the one side that carries on the back with the closed loop guide rail, set up curved spacing groove on the spacing seat, spacing portion is cylindric structure, cylindric structure with the spacing groove phase-match.

Furthermore, a shared electromagnetic valve is arranged between the two cylinders and used for enabling the two cylinders to synchronously move.

Furthermore, a driving motor is arranged between the two bases and is respectively connected with the two driving chain wheels arranged on the two bases through a two-outlet speed reducer so as to enable the two driving chain wheels to synchronously rotate

Furthermore, the shaft core of the driving sprocket is connected with the output shaft of the speed reducer through a coupler.

Furthermore, the shaft core of the driving chain wheel is also provided with a tensioning sleeve.

Furthermore, the slide seat is fixedly arranged with the closed loop chain through a connecting plate.

Furthermore, the inside wall and the outside wall of the closed-loop guide rail are respectively provided with a continuous sliding groove, and the sliding seat is provided with a first pulley matched with the continuous sliding groove of the inside wall and a second pulley matched with the continuous sliding groove of the outside wall.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses a two guide rail synchronous transmission system, this two guide rail synchronous transmission system has set a driving motor between two bases, driving motor links to each other with two driving sprocket that set up on two bases respectively through the speed reducer of one play two formulas, makes two driving sprocket realize synchronous drive, has further realized the synchronous drive of two closed loop chains for the tool board that is located on two closed loop guide rails can stable transmission, has reduced the control degree of difficulty, has reduced synchronous control's cost. Most importantly, the double-guide-rail synchronous transmission system is additionally provided with the positioning mechanism between the two bases, so that the telescopic end of the cylinder can drive the connecting rod to rotate together through the driving block in the telescopic motion process, and further the connecting block positioned on the connecting rod and the limiting part arranged on the connecting block rotate together, so that the buckling or separation between the limiting part and the limiting groove is realized, and the purpose of accurately positioning the jig plate is achieved. The positioning mechanism is arranged, so that the jig plate loaded with the product can be accurately stopped on the processing station, and the processing precision of the product is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of a dual-guideway synchronous transmission system in embodiment 1.

Fig. 2 is a schematic structural diagram of a dual-rail synchronous transmission system without a jig board in embodiment 1.

Fig. 3 is a top view of the dual-track synchronous transmission system without a jig board in embodiment 1.

Fig. 4 is an enlarged view of the first connection relationship among the base, the closed-loop guide rail, the closed-loop chain, the cylinder, the driving block, the connecting rod, the connecting block, the limiting portion, the limiting groove, the limiting seat, and the slide carriage in embodiment 1.

Fig. 5 is an enlarged view of a second connection relationship among the base, the closed-loop guide rail, the closed-loop chain, the cylinder, the driving block, the connecting rod, the connecting block, the limiting portion, the limiting groove, the limiting seat and the slide carriage in embodiment 1.

Fig. 6 is an enlarged view of the connection relationship among the base, the closed-loop guide rail, the closed-loop chain, the cylinder, the driving block, the connecting rod, the connecting block, the limiting portion, the limiting groove, the limiting seat and the slide carriage in embodiment 1.

Fig. 7 is a schematic view of the connection relationship among the base, the closed-loop guide rail, the closed-loop chain, the driving motor, the reducer, and the driving sprocket in embodiment 1.

Reference numerals

The device comprises a base 1, a closed-loop guide rail 2, a driving chain wheel 3, a driven chain wheel 4, a closed-loop chain 5, a jig plate 6, a cylinder 7, a driving block 8, a connecting rod 9, a mounting plate 10, a driving motor 11, a speed reducer 12, a connecting block 13, a limiting part 14, a sliding seat 15, a pulley 16, a limiting seat 17, a linkage shaft 18, a reinforcing plate 19, a fixing plate 20 and a connecting plate 21.

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for purposes of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced and do not represent actual dimensions; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the same or similar reference numerals correspond to the same or similar parts; the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent.

Detailed Description

The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more clearly understand the advantages and features of the present invention and to clearly define the scope of the present invention.

Example 1

As shown in fig. 1 to 7, the present embodiment provides a dual-guide synchronous transmission system, which includes two bases 1 disposed oppositely, and the two bases 1 are parallel to each other. Each base 1 is provided with a closed-loop guide rail 2, the closed-loop guide rails 2 are of an oval structure, the closed-loop guide rails 2 are fixedly installed on the bases 1, and the two closed-loop guide rails 2 located on the two bases 1 are opposite in position and are in a relatively arranged state. The base 1 is provided with a driving chain wheel 3 and a driven chain wheel 4 on the inner side of the closed loop guide rail 2, the driving chain wheel 3 and the driven chain wheel 4 are respectively arranged at two ends of an oval structure, and the driving chain wheel 3 is provided with a power device which is used for driving the driving chain wheel 3 to rotate. And the two driving chain wheels 3 on the two bases 1 correspond to each other in position, and the two driven chain wheels 4 on the two bases 1 correspond to each other in position. The driving chain wheel 3 on each base 1 is connected with the driven chain wheel 4 on the same base 1 through the closed-loop chain 5, namely the driving chain wheel 3 and the driven chain wheel 4 are respectively meshed with the closed-loop chain 5, and the driving chain wheel 3 drives the closed-loop chain 5 and the driven chain wheel 4 to transmit together. The closed-loop chain 5 is also fixedly connected with a sliding seat 15, the position between the sliding seat 15 and the closed-loop chain 5 is relatively fixed, the sliding seat 15 is also provided with a pulley 16 matched with the closed-loop guide rail 2, and the pulley 16 can slide on the closed-loop guide rail 2. When the driving sprocket 3 drives the driven sprocket 4 to rotate through the closed loop chain 5, the driven closed loop chain 5 drives the sliding seat 15 to slide on the closed loop guide rail 2. The two slide bases 15 arranged on the two bases 1 are connected through the jig plate 6, that is, one side of the jig plate 6 is fixed with the slide base 15 on one of the bases 1, and the other side of the jig plate 6 is fixed with the slide base 15 on the other base 1. The jig plate 6 is parallel to the ground and perpendicular to the two bases 1, and the jig plate 6 is used for placing a product to be processed so as to drive the product to be transmitted. In order to ensure that the two sliding seats 15 at the two ends of the jig plate 6 can synchronously slide on the two closed-loop guide rails 2 and ensure stable transmission of the jig plate 6, it is generally necessary to synchronously link the two driving sprockets 3 disposed on the two bases 1 so as to synchronously transmit the two closed-loop chains 5 on the two bases 1, and further, the two ends of the jig plate 6 can also synchronously transmit on the two closed-loop guide rails 2, as shown in fig. 1 to 3.

In order to enable the jig plate 2 to be accurately stopped at a designated station, a positioning mechanism is particularly arranged between the two bases 1, the positioning mechanism is arranged in the middle of the two bases 1, limiting parts 14 are respectively arranged on two sides of the positioning mechanism, the two limiting parts 14 respectively correspond to the two bases 1, and the limiting parts 14 and the positioning mechanism are rotatably arranged. The slide seat 15 is provided with a limit groove matched with the limit part 14, and the limit groove is matched with the limit part 14 to realize accurate positioning of the jig plate 6. That is, when the slide seat 15 slides to the position corresponding to the position limiting portion 14, the power device on the driving sprocket 3 is first closed to stop the motion of the closed-loop chain 5, and then the position limiting portions 14 on both sides of the positioning mechanism are controlled to rotate simultaneously to make the position limiting portions 14 buckle with the position limiting grooves on the slide seat 15, so as to realize secondary accurate positioning of the slide seat 15 and improve the position matching accuracy between the slide seat 15 and the work station, as shown in fig. 2 and 3.

Preferably, the positioning mechanism comprises two cylinders 7 which are arranged oppositely, that is, the tail parts of the two cylinders 7 are arranged oppositely, and the telescopic ends of the two cylinders 7 are arranged oppositely, that is, the two telescopic ends of the two cylinders 7 correspond to the two bases 1 respectively. The flexible end of cylinder 7 even has drive block 8, and drive block 8 sets up with flexible end is perpendicular, and drive block 8 one side and the flexible end fixed connection of cylinder 7, the opposite side is fixed and is provided with connecting rod 9, and connecting rod 9 keeps parallel with the long limit of closed loop guide rail 2, and connecting rod 9 rotates and sets up on base 1. When the telescopic end of the cylinder 7 extends or retracts, the telescopic end can drive the connecting rod 9 to rotate through the driving block 8. Still be equipped with a connecting block 13 on the connecting rod 9, one side of connecting block 13 is fixed to be set up on connecting rod 9, with connecting rod 9 fixed connection, and the opposite side of connecting block 13 even has spacing portion 14. In the present technical solution, the connecting block 13 and the driving block 8 are distributed on opposite sides of the connecting rod 9, that is, when the telescopic end pushes the driving block 8 to move toward the side close to the substrate 1, the limiting portion 14 on the connecting block 13 just moves toward the side far from the base 1, and vice versa, as shown in fig. 2 and 6.

Preferably, the base 1 is provided with mounting plates 10 at positions corresponding to two ends of the connecting rod 9, the two mounting plates 10 are parallel, mounting holes are formed in the mounting plates 10, and two ends of the connecting rod 9 are respectively arranged in the two mounting holes and rotatably connected with the two mounting holes, as shown in fig. 4-6. The rotational connection can be realized here by means of bearings or by means of a structural design. For example, the end of the connecting rod 9 is inserted through the mounting hole, and a circular or annular locking portion is disposed at the end of the connecting rod 9 (the locking portion is disposed outside the mounting hole), and the diameter of the locking portion needs to be larger than the inner diameter of the mounting hole, so as to ensure that the connecting rod 9 can rotate freely in the mounting hole, but cannot be separated from the mounting hole. Of course, similar structures can be applied to the present technical solution as long as the connecting rod 9 can be rotatably connected to the mounting hole, and are not particularly limited.

Preferably, as shown in fig. 5 and 6, the sliding seat 15 is provided with a limiting seat 17 on the side opposite to the closed-loop guide rail 2, and the limiting seat 17 is arranged perpendicular to the sliding seat 15, that is, the limiting seat 17 extends perpendicularly to the side where the positioning mechanism is located. The limiting seat 17 is further provided with an arc-shaped limiting groove on the side opposite to the sliding seat 15, and the opening direction of the limiting groove corresponds to the limiting part 14 of the positioning mechanism. The limiting part 14 arranged on the connecting block 13 is of a cylindrical structure, and the cylindrical structure is matched with the limiting groove. When the cylindrical structure block was in the arc spacing inslot, slide 15 position was fixed by the accuracy, and after cylindrical structure and arc spacing inslot separation, slide 15 can continue to slide on closed loop guide rail 2 under the drive of closed loop chain 5.

Preferably, a common solenoid valve is arranged between the two cylinders 7, and the common solenoid valve is respectively connected with the two cylinders 7 in a control mode and used for enabling the two cylinders 7 to move synchronously. The common electromagnetic valve in the technical scheme is a conventional electromagnetic valve in the prior art, and the connection mode of the common electromagnetic valve and the two cylinders 7 can refer to a control mode in the prior art, which is not described herein again. The setting of sharing solenoid valve has avoided producing little time error when operating personnel controls two cylinders 7 simultaneously, and then influences the synchronous working of two cylinders 7, reduces the secondary positioning accuracy to tool board 6.

Certainly, the positioning mechanism in this technical solution is not limited to the above-mentioned connection structure, for example, the two cylinders 7 may also be directly connected to the limiting portions 14 at the telescopic ends thereof, and the telescopic ends of the cylinders 7 directly drive the limiting portions 14 to move, so that the limiting portions 14 are close to the base 1 or far away from the base 1, and further the limiting portions 14 are buckled with or separated from the limiting grooves, so as to achieve the function of limiting the sliding seat 15.

Preferably, as shown in fig. 1, 2, 3 and 7, a driving motor 11 is further provided between the two bases 1, and the driving motor 11 is a power unit for the two driving sprockets 3 on the two base plates 1. The driving motor 11 is respectively connected with the two driving sprockets 3 arranged on the two bases 1 through a one-out-two type speed reducer 12, so that the two driving sprockets 3 can synchronously rotate. Specifically, because the two-in-one speed reducer 12 in the prior art is provided with two output shafts, and the two output shafts are respectively connected with the two driving sprockets 3 on the two substrates 1, an effect that one driving motor 11 drives the two driving sprockets 3 simultaneously can be realized, so that the two driving sprockets 3 achieve a very high synchronous transmission effect. In this embodiment, the shaft core of the driving sprocket 3 is connected to the output shaft of the speed reducer 12 through a coupler, and the shaft core of the driving sprocket 3 is provided with a tensioning sleeve, and the tensioning sleeve and the coupler are installed in the same bearing seat. This technical scheme is through setting up a driving motor 11 between two base plates 1 to make driving motor 11 link to each other with two driving sprocket 3 through the speed reducer 12 of one play two formulas, not only reduced the control cost, also improved two driving sprocket 3's synchronous control precision simultaneously, have higher practical value.

Preferably, as shown in fig. 6, the sliding base 15 is fixedly arranged with the closed loop chain 5 through a connecting plate 21. That is, the slide carriage 15 is provided with a connecting plate 21 at a side corresponding to the closed-loop chain 5, and the connecting plate 21 is fixed with the closed-loop chain 5 by bonding, welding, screwing or clamping. And the closed-loop chain 5 drives the sliding seat 15 to slide on the closed-loop guide rail 2 through the connecting plate 21.

Preferably, as shown in fig. 5 and 6, the inner and outer side walls of the closed-loop guide 2 are provided with continuous runners, respectively. The sliding base 15 is provided with a first pulley matched with the inner side wall continuous chute and a second pulley matched with the outer side wall continuous chute. I.e. the first pulley is arranged inside the closed-loop guide rail 2, the second pulley is arranged outside the closed-loop guide rail 2, and the closed-loop guide rail 2 is arranged between the first pulley and the second pulley. The first pulley can slide in the inner sliding groove of the closed-loop guide rail 2, and the second pulley can slide in the outer sliding groove of the closed-loop guide rail 2.

Preferably, the base 1 is provided with at least one in-place detection device on a side corresponding to the jig plate 6, wherein said in-place detection device includes, but is not limited to, an infrared in-place detection device and a laser in-place detection device. The in-place detection device is mainly used for detecting the position of the jig plate 6, so that when the jig plate 6 reaches an appointed station, an operator can be reminded of carrying out on-line processing on a product in real time.

The accurate positioning process to the tool board among this technical scheme is as follows:

in the normal transmission process of the product, the driving motor 11 can drive the two driving sprockets 3 on the two bases 1 to synchronously rotate through the two-type speed reducer 12, the two driving sprockets 3 respectively drive the driven sprocket 4 on the same base 1 to synchronously rotate through the closed-loop chain 5, and then the closed-loop chain 5 on the two bases 1 is ensured to be synchronously driven. The two synchronously-driven closed-loop chains 5 respectively drive two ends of the jig plate 6 to synchronously move through the slide seat 15 arranged on the two closed-loop chains, so that stable transmission of products is realized. When the jig plate 6 reaches the designated station, the driving motor 11 is turned off at the moment, so that the driving chain wheel 3 stops rotating, and the closed-loop chain 5 stops driving. Subsequently, utilize the shared solenoid valve, start two cylinders 7 simultaneously, the flexible end of cylinder 7 drives connecting rod 9 through drive block 8 and rotates in the mounting hole, and then makes spacing portion 14 and spacing groove looks lock of setting on connecting block 13, realizes the secondary accurate positioning to tool board 6, improves the position accuracy of tool board 6, promotes operating personnel's the machining precision to the product.

The embodiment provides a pair of guide rail synchronous transmission system, a driving motor 11 has been set between two bases 1, driving motor 11 links to each other with two driving sprocket 3 that set up on two bases 1 respectively through the speed reducer 12 of one play two formulas, make two driving sprocket 3 realize synchronous drive, further realized two closed loop chain 5's synchronous drive, make tool board 6 that is located on two closed loop guide rails 2 can the steady transmission, the control degree of difficulty has been reduced, the cost of synchro control has been reduced. Most importantly, the double-guide-rail synchronous transmission system is additionally provided with the positioning mechanism between the two bases 1, so that the telescopic end of the air cylinder 7 can drive the connecting rod 9 to rotate together through the driving block 8 in the telescopic motion process, and further the connecting block 13 positioned on the connecting rod 9 and the limiting part 14 arranged on the connecting block 13 rotate together along with the connecting block, so that buckling or separation between the limiting part 14 and the limiting groove is realized, and the purpose of secondary accurate positioning of the jig plate 6 is achieved. The arrangement of the positioning mechanism is favorable for accurately stopping the jig plate 6 loaded with the product on the processing station so as to improve the processing precision of the product.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A double-guide-rail synchronous transmission system is characterized by comprising two bases which are oppositely arranged, wherein closed-loop guide rails are respectively arranged on the bases, and the two closed-loop guide rails on the two bases are oppositely arranged; a driving chain wheel and a driven chain wheel are arranged on the inner side of the closed-loop guide rail in a matching mode, the driving chain wheel is connected with the driven chain wheel through a closed-loop chain, a sliding seat is connected onto the closed-loop chain, the sliding seat is provided with a pulley matched with the closed-loop guide rail, two sliding seats arranged on the two bases are connected through a jig plate, and the two driving chain wheels arranged on the two bases are synchronously linked to drive the two ends of the jig plate to synchronously drive on the two closed-loop guide rails; a positioning mechanism is further arranged between the two bases, limiting parts are arranged on two sides of the positioning mechanism respectively, the limiting parts are arranged in a rotating mode with the positioning mechanism, limiting grooves matched with the limiting parts are formed in the sliding seat, and the limiting grooves are matched with the limiting parts to achieve accurate positioning of the jig plate.

2. The dual-guide-rail synchronous transmission system as claimed in claim 1, wherein the positioning mechanism comprises two cylinders which are arranged oppositely, and the telescopic ends of the two cylinders respectively correspond to the two bases; the flexible end of cylinder even has the drive block, the flexible end fixed connection of drive block one side and cylinder, the fixed connecting rod that is provided with of opposite side, the connecting rod rotates and sets up on the base, still be equipped with the connecting block on the connecting rod, fixed the setting on connecting rod of connecting block one side, the opposite side even has spacing portion.

3. The system as claimed in claim 2, wherein the base has mounting plates at positions corresponding to the two ends of the connecting rod, the mounting plates having mounting holes, and the two ends of the connecting rod are rotatably disposed with the two mounting holes.

4. The system of claim 2, wherein the sliding base has a limiting seat on a side opposite to the closed-loop guideway, the limiting seat has an arc-shaped limiting groove, the limiting portion has a cylindrical structure, and the cylindrical structure is matched with the limiting groove.

5. The double-guide-rail synchronous transmission system as claimed in claim 2, wherein a common electromagnetic valve is provided between the two cylinders, and the common electromagnetic valve is used for enabling the two cylinders to synchronously move.

6. The dual-guideway synchronous transmission system of claim 1, wherein a driving motor is provided between the two bases, and the driving motor is connected to two driving sprockets provided on the two bases through a two-out type speed reducer, respectively, so as to realize synchronous rotation of the two driving sprockets.

7. The dual-guideway synchronous transmission system of claim 6, wherein the shaft core of the driving sprocket is connected with the output shaft of the reducer through a coupling.

8. The system of claim 7, wherein the shaft core of the driving sprocket is further provided with a tension sleeve.

9. A double-track synchronous conveyor system as in claim 1 wherein said carriage is fixedly attached to said closed loop chain by a connecting plate.

10. The dual track synchronous conveyor system as claimed in claim 1, wherein the inner and outer side walls of the closed loop track are respectively provided with a continuous sliding groove, and the sliding base is provided with a first pulley engaged with the continuous sliding groove of the inner side wall and a second pulley engaged with the continuous sliding groove of the outer side wall.