Automatic tension adjusting mechanism for wire-driven high-speed conveying line

Abstract

The utility model relates to the technical field of conveying line especially is concerned on a kind of automatic tensioning adjustment mechanism for line drive high-speed conveying line, it includes: conveying line rack, conveying track and conveying platform, conveying platform is slidably connected in conveying track, and conveying platform is equipped with tensioning module, and tensioning module includes transmission seat, central shaft and tensioning cylinder, transmission seat is fixedly installed in conveying platform, central shaft is rotatably installed in transmission seat, and tensioning cylinder is coaxially sleeved in central shaft;Drive line body and line drive module, drive line body one end is connected in conveying platform, and the other end is rolled in tensioning cylinder, and line drive module is used to drive drive line body to drive conveying platform to carry out to and fro movement on conveying track;Trigger module is used to drive central shaft to rotate along first rotating direction from shaft.The overall mechanism of the present application realizes online automatic tensioning, without stopping or manual intervention, can solve the problems such as adjustment lag, loss of shutdown, poor adaptability of traditional mode.

Description

Technical Field

[0001] This utility model relates to the technical field of conveyor lines, and in particular to an automatic tensioning adjustment mechanism for line-driven high-speed conveyor lines. Background Technology

[0002] As a highly efficient material handling equipment, the linear drive high-speed conveyor line is widely used in various industrial fields due to its advantages such as high transmission speed, high space utilization, and flexible layout. In this type of conveyor line, the linear body (such as steel wire, chain, rope, etc.) is the core transmission component. It achieves reciprocating motion through the drive device (usually a motor paired with a drum to transport the linear body), thereby pulling the material on the conveyor line to complete the transfer from the starting point to the end point. Among them, the tension stability of the linear body is the key factor that determines the running accuracy and reliability of the conveyor line. If the tension is insufficient, the linear body is prone to slippage and the transmission gap will increase, which can easily lead to the problem of material conveying position deviation. In existing technologies, the linear body elongates under tension during continuous driving, leading to insufficient tension and consequently a decrease in the positional accuracy of the conveyor line. To address this issue, most tension adjustment mechanisms on the market are offline adjustment methods. Common approaches include: 1. Manual mechanical adjustment, such as installing bolts or eccentric wheels at the tension adjustment end of the conveyor line. When the linear body elongates and causes insufficient tension, operators must stop the machine and manually adjust the tension. The adjustment accuracy relies on experience and lacks real-time monitoring and automatic judgment functions. Adjustment is only performed after an accuracy failure or collision, resulting in a significant delay in adjustment timing. 2. Using counterweight adjustment, for example, suspending a counterweight on the tension wheel bracket, and continuously applying tension to the tension wheel through the gravity of the counterweight to keep the linear body under a certain tension. However, this method is only suitable for scenarios with installation space in the vertical direction, and the tension adjustment range is fixed. It cannot be dynamically adjusted according to changes in the load of the conveyor line, making it difficult to adapt to different conveyor lines. Therefore, how to design an automatic tension adjustment mechanism for line-driven high-speed conveyor lines that can solve the problems of adjustment lag and production impact caused by downtime in the existing technology, while also taking into account strong adaptability, simple structure, and controllable cost, is a technical problem that enterprise technicians urgently need to solve. Utility Model Content

[0003] To address the shortcomings of the prior art, this application provides an automatic tension adjustment mechanism for line-driven high-speed conveyor lines.

[0004] The above-mentioned inventive objective of this application is achieved through the following technical solutions: An automatic tension adjustment mechanism for a line-driven high-speed conveyor line includes: The conveyor line frame, conveyor track, and conveyor platform are provided. The conveyor track is fixedly installed on the conveyor line frame, and the conveyor platform is slidably connected to the conveyor track. The conveyor platform is equipped with a tensioning module, which includes a transmission seat, a central shaft, and a tensioning cylinder. The transmission seat is fixedly installed on the conveyor platform, the central shaft is rotatably installed on the transmission seat, and the tensioning cylinder is coaxially sleeved on the central shaft. The drive line and the line drive module are connected at one end to the conveyor platform and at the other end to the tensioning drum. The line drive module is installed on the conveyor frame and is used to drive the drive line to drive the conveyor platform to move back and forth on the conveyor track. The trigger module is located at the end of the conveyor frame. There is a trigger position on the conveyor track. When the conveyor platform moves to the trigger position, the trigger module is used to drive the central shaft to rotate along the first rotation direction.

[0005] Preferably, a sliding key is provided on the outer side of the central shaft along its length, and a groove is provided inside the tensioning cylinder for sliding engagement with the sliding key. The tensioning cylinder and the central shaft are slidably connected through the groove and the sliding key. An installation sleeve is provided between the tensioning cylinder and the central shaft, and the central shaft passes through the installation sleeve without contacting the installation sleeve. The installation sleeve is fixedly installed on the transmission seat and has an external thread section on its outer side. An internal thread section is provided on the inner side of the tensioning cylinder for thread engagement with the external thread section. The tensioning cylinder is threadedly connected to the installation sleeve through the engagement of the internal thread section and the external thread section.

[0006] Preferably, the triggering module includes a follower block, a mounting base, a wedge block, and a spring. The follower block is located at the end of the central shaft away from the tensioning cylinder and a protrusion is fixedly connected to its outer side. A torsion spring is provided between the follower block and the central shaft. The torsion spring is sleeved on the central shaft and one end is fixedly connected to the follower block. When the follower block rotates in the first rotation direction, the torsion spring is used to provide the follower block with an elastic restoring force for rotation in the second rotation direction. A first one-way bearing is provided between the follower block and the central shaft. The first one-way bearing is sleeved on the central shaft. The inner ring of the first one-way bearing is fixedly connected to the central shaft, and the outer ring of the first one-way bearing is fixedly connected to the follower block. When the follower block rotates in the first rotation direction, the outer and inner rings of the first one-way bearing are locked, allowing the first one-way bearing and the central shaft to rotate together in the first rotation direction. Furthermore, when the follower block rotates in the second rotation direction, the outer ring and inner ring of the first one-way bearing are in a movable state. The outer ring of the first one-way bearing can rotate in the second rotation direction, while the inner ring and central shaft of the first one-way bearing are in a stationary state. The first rotation direction is opposite to the second rotation direction. The mounting base is fixedly installed at the end of the conveyor frame. The wedge block is rotatably connected to the mounting base. One end of the spring is fixedly connected to the mounting base and the other end is fixedly connected to the straight end of the wedge block away from its inclined surface. When the conveyor platform moves to the trigger position, the bump is located below the inclined surface of the wedge block and abuts against the inclined surface of the wedge block.

[0007] Preferably, a second one-way bearing is provided between the transmission seat and the central shaft. The second one-way bearing is sleeved on the central shaft, the inner ring of the second one-way bearing is fixedly connected to the central shaft, and the outer ring of the second one-way bearing is fixedly connected to the transmission seat. The second one-way bearing is used to prevent the central shaft from rotating in the second rotation direction.

[0008] Preferably, the trigger module further includes a limiting post, which is fixedly connected to the mounting base and is used to abut against the flat end of the wedge block near its inclined surface.

[0009] Preferably, an angle limiting groove is provided on the outer side of the follower block, and a limiting block is provided on the transmission seat in the direction of the angle limiting groove. The limiting block is located on the rotation path of the follower block and is used to abut against the inner sidewall of the angle limiting groove.

[0010] Preferably, the automatic tensioning adjustment mechanism of the line-driven high-speed conveyor also includes a positioning module set on the conveyor track. The positioning module includes a positioning column and a positioning drive component. The conveyor platform has a positioning groove, which is inserted into the positioning column. When the conveyor platform moves to the trigger position, the positioning drive component is used to drive the positioning column to move closer to or away from the positioning groove.

[0011] Preferably, the conveying track is any one of a straight track, a circular track, an elliptical track, or a rectangular track.

[0012] Preferably, the line drive module includes a circulating drum, a drive motor, and a line support wheel assembly. The circulating drum is rotatably mounted on the conveyor track. The output shaft of the drive motor is coaxially fixedly mounted on the circulating drum. The drive line is wound onto the circulating drum with both ends extending out and respectively connected to the conveyor platform and wound onto the tension drum. The line support wheel assembly is used to support the drive line and guide the drive line to form a closed loop route.

[0013] Preferably, the automatic tensioning adjustment mechanism of the line-driven high-speed conveyor also includes a position sensing module disposed on the conveyor track. The position sensing module includes a working position sensor, a trigger position sensor and a controller. The working position sensor is disposed in the middle section of the conveyor track and is used to detect the conveyor platform passing the working position sensor. The trigger position sensor is disposed at the end of the conveyor track and is used to detect the conveyor platform located at the trigger position. The working position sensor, the trigger position sensor and the line-driven module are all controlled and connected to the controller.

[0014] Compared with the prior art, the advantages of this utility model are as follows: This utility model uses a conveying platform that is slidably connected to the conveying track. The tensioning cylinder of the tensioning module is connected to the central shaft through a sliding key and a sliding groove, and is threadedly connected to a fixed mounting sleeve. The follower block of the trigger module is linked to the central shaft through a first one-way bearing. When the conveying platform moves to the trigger position, the protrusion of the follower block abuts against the inclined surface of the wedge block and drives the central shaft to rotate in the first rotation direction, causing the tensioning cylinder to move axially and rotate under the drive of the central shaft to wind up the drive line. At the same time, the second one-way bearing restricts the central shaft from reversing to maintain tension. This structural design realizes online automatic tensioning of the drive line. Compared with the traditional manual mechanical adjustment method, there is no need to stop the machine or rely on manual judgment of the adjustment time. Compared with the counterweight adjustment method, it is not limited by vertical installation space and is adaptable to various applications. Multiple conveyor tracks are available. Simultaneously, the linear adjustment method using a tensioning cylinder and mounting sleeve threaded drive, combined with the guiding action of a sliding key and groove, allows for precise control of the drive line's winding amount, significantly improving tension adjustment accuracy. Furthermore, through the structural linkage of the trigger module and tensioning module, the drive line is tensioned while simultaneously winding and aligning the drive elevator on the tensioning cylinder, preventing overlap and improving tension stability. Additionally, the combination of a second and first one-way bearing prevents the central shaft from reversing, further preventing slack and tension instability caused by drive line reversal. Moreover, the conveyor tracks can be configured in various shapes such as straight, circular, elliptical, or rectangular, offering high adaptability and flexibly meeting the high-precision, high-continuity operation requirements of high-speed conveyor lines in various industrial scenarios. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the transport track in this application; Figure 2 yes Figure 1 A magnified view of part A in the middle; Figure 3 This is a side view of the tensioning module in this application; Figure 4 This is a cross-sectional structural diagram of the tensioning module in this application; Figure 5 This is a schematic diagram of the assembly structure of the wedge block, spring and mounting base in this application; Figure 6 This is a schematic diagram of the structure when the triggering module and the tensioning module work together in this application; Figure 7 This is a schematic diagram of the side structure of the follower block in this application; Figure 8 yes Figure 1 A magnified view of part B in the middle section; Figure 9This is a structural schematic diagram of an embodiment of the present application in which the positioning drive is a linear cylinder; Figure 10 This is a schematic diagram of the structure when the positioning drive is a rotary cylinder in one embodiment of this application; Figure 11 This is a schematic diagram illustrating the working principle of this application.

[0016] Reference numerals in the attached drawings: 1. Conveying track; 2. Conveying platform; 3. Drive line; 4. Line drive module; 41. Circulating drum; 42. Drive motor; 43. Line support wheel assembly; 5. Trigger module; 51. Follower block; 52. Mounting seat; 53. Wedge block; 54. Spring; 55. Protrusion; 56. Torsion spring; 57. First one-way bearing; 58. Second one-way bearing; 59. Limiting post; 510. Angle limiting groove; 511. Limiting block; 6. Tensioning module; 61. Transmission seat; 62. Central shaft; 63. Tensioning cylinder; 64. Sliding key; 65. Slide groove; 67. Mounting sleeve; 7. Positioning module; 71. Positioning post; 72. Positioning drive component; 8. Working position sensor; 9. Trigger position sensor; 10. Controller. Detailed Implementation

[0017] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of this application, including various details to aid understanding. These should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0018] It should be noted that the terms "first," "second," etc., used in this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. The implementation methods described in the following exemplary embodiments do not represent all implementation methods consistent with this disclosure.

[0019] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article, unless otherwise specified, generally indicates that the preceding and following related objects have an "or" relationship.

[0020] The following is a reference appendix. Figure 1 To be continued Figure 11 This application describes an automatic tension adjustment mechanism for a line-driven high-speed conveyor line.

[0021] like Figure 1 , Figure 2 , Figure 8 and Figure 11 As shown, the automatic tensioning adjustment mechanism for a line-driven high-speed conveyor includes a conveyor frame, a conveyor track 1, a conveyor platform 2, a drive line 3, a line drive module 4, and a trigger module 5. The conveyor track 1 is fixedly installed on the conveyor frame, and the conveyor platform 2 is slidably connected to the conveyor track 1. The conveyor platform 2 is equipped with a tensioning module 6, which includes a transmission seat 61, a central shaft 62, and a tensioning cylinder 63. The transmission seat 61 is fixedly installed on the conveyor platform 2, the central shaft 62 is rotatably installed on the transmission seat 61, and the tensioning cylinder 63 is coaxially sleeved on the central shaft 62. One end of the drive line 3 is connected to the conveyor platform 2, and the other end is wound into the tensioning cylinder 63. The line drive module 4 is installed on the conveyor frame. The conveyor rail 1 is used to drive the drive line 3 to drive the conveyor platform 2 to move back and forth on the conveyor rail 1. The trigger module 5 is set at the end of the conveyor frame. There is a trigger position on the conveyor rail 1. When the conveyor platform 2 moves to the trigger position, the trigger module 5 drives the central shaft 62 to rotate from the shaft in the first rotation direction. The drive line 3 drives the conveyor platform 2 to move under the action of the online drive module 4. When the conveyor platform 2 moves to the trigger position, the trigger module 5 drives the central shaft 62 to rotate in the first rotation direction, so that the tensioning cylinder 63 winds up the drive line 3 to compensate for the elongation, so as to realize the automatic tension adjustment of the online drive conveyor line and complete the tension compensation without stopping the machine.

[0022] Specifically, such as Figure 3 and Figure 4 As shown, a sliding key 64 is provided on the outer side of the central shaft 62 along its own length direction. A groove 65 is provided inside the tensioning cylinder 63 for sliding engagement with the sliding key 64. The tensioning cylinder 63 and the central shaft 62 are slidably connected through the groove 65 and the sliding key 64. A mounting sleeve 67 is provided between the tensioning cylinder 63 and the central shaft 62. The central shaft 62 passes through the mounting sleeve 67 but does not contact the mounting sleeve 67. The mounting sleeve 67 is fixedly installed on the transmission seat 61 and has an external thread section (not shown in the figure) on its outer side. An internal thread section is provided on the inner side of the tensioning cylinder 63 for thread engagement with the external thread section. (Not shown in the figure) The tensioning cylinder 63 is threadedly connected to the mounting sleeve 67 through the engagement of the internal thread section and the external thread section. The central shaft 62 and the tensioning cylinder 63 are slidably engaged through the sliding key 64 and the sliding groove 65. The tensioning cylinder 63 is threadedly connected to the mounting sleeve 67. When the central shaft 62 rotates, the tensioning cylinder 63 moves axially under the action of the thread and rotates under the drive of the central shaft 62 to realize the arrangement and winding of the drive line 3. This structure converts the rotational motion of the central shaft 62 into the rotation and linear motion of the tensioning cylinder 63, ensuring that the drive line 3 is wound evenly and the tension is adjusted accurately, thereby improving the stability of the tensioning mechanism.

[0023] As a preferred option, such as Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the trigger module 5 includes a follower block 51, a mounting base 52, a wedge block 53, and a spring 54. The follower block 51 is located at the end of the central shaft 62 away from the tension cylinder 63, and a protrusion 55 is fixedly connected to its outer side. A torsion spring 56 is provided between the follower block 51 and the central shaft 62. The torsion spring 56 is sleeved on the central shaft 62, and one end of it is fixedly connected to the follower block 51. When the follower block 51 rotates in the first rotation direction, the torsion spring 56 is used to provide the follower block 51 with an elastic restoring force for rotation in the second rotation direction. A first one-way bearing 57 is provided between the follower block 51 and the central shaft 62. The first one-way bearing 57 is sleeved on the central shaft 62. The inner ring of the first one-way bearing 57 is fixedly connected to the central shaft 62, and the outer ring of the first one-way bearing 57 is fixedly connected to the follower block 51. When the follower block 51 rotates in the first rotation direction, the outer ring and inner ring of the first one-way bearing 57 are locked, so that the first one-way bearing 57 and the central shaft 62 can rotate together in the first rotation direction. When the follower block 51 rotates in the second rotation direction, the outer ring and inner ring of the first one-way bearing 57 are in a movable state. The outer ring of the first one-way bearing 57 can rotate in the second rotation direction, while the inner ring of the first one-way bearing 57 and the central shaft 62 are in a stationary state. The first rotation direction is opposite to the second rotation direction. Mounting base 52 is fixedly installed at the end of the conveyor frame. Wedge block 53 is rotatably connected to mounting base 52. One end of spring 54 is fixedly connected to mounting base 52 and the other end is fixedly connected to the flat end of wedge block 53 away from its inclined surface. When the conveyor platform 2 moves to the trigger position, protrusion 55 is located below the inclined surface of wedge block 53 and abuts against the inclined surface of wedge block 53. The follower block 51 is connected to the central shaft 62 through the first one-way bearing 57. When the conveying platform 2 is in place, the protrusion 55 slides along the inclined surface of the wedge block 53 to drive the follower block 51 to rotate. Then, the inner ring of the first one-way bearing 57 drives the central shaft 62 to rotate. Then, the torsion spring 56 and the spring 54 respectively drive the follower block 51 and the wedge block 53 to reset without affecting the central shaft 62. The mechanical linkage structure of the trigger module 5 realizes automatic triggering of tension. The first one-way bearing 57 ensures that the tensioning action is irreversible, and the spring 54 resets the mechanism to ensure that it can be reused. Multiple tensioning cycles can be completed without manual intervention, which is suitable for the continuous operation requirements of high-speed conveyor lines. It should be noted that a one-way bearing is a type of bearing that can rotate freely in one direction but is locked in another. One-way bearings are also called overrunning clutches, a name derived from different industries and functions. The metal housing of a one-way bearing contains many rollers, needle rollers, or balls. The shape of its rolling seats (cavities) allows it to roll only in one direction, while generating significant resistance in the other. The locked state mentioned above refers to the outer ring, inner ring, and the connecting balls being in a synchronized state, meaning they rotate synchronously. The active state refers to the outer ring, inner ring, and the connecting balls being in a disengaged state, meaning the rotation of the outer ring does not affect the movement of the inner ring. The balls only affect the inner ring in the first rotational direction; in the second rotational direction, they cannot transmit power to the inner ring. The specific internal structure and working principle of a one-way bearing are common knowledge to those skilled in the art and will not be elaborated here.

[0024] As a preferred option, such as Figure 4 As shown, a second one-way bearing 58 is provided between the transmission seat 61 and the central shaft 62. The second one-way bearing 58 is sleeved on the central shaft 62. The inner ring of the second one-way bearing 58 is fixedly connected to the central shaft 62, and the outer ring of the second one-way bearing 58 is fixedly connected to the transmission seat 61. The second one-way bearing 58 is used to prevent the central shaft 62 from rotating in the second rotation direction. By providing the second one-way bearing 58, the central shaft 62 can be prevented from reversing under the reaction force of the tension of the drive line 3, avoiding the situation where the tensioning cylinder 63 rotates and the line becomes slack, thus improving the stability of tension control.

[0025] Furthermore, such as Figure 5 and Figure 6 As shown, the trigger module 5 also includes a limiting post 59, which is fixedly connected to the mounting base 52 and is used to abut against the flat end of the wedge block 53 near its inclined surface. The limiting post 59 can limit the rotation angle of the wedge block 53, preventing the protrusion 55 from getting stuck or difficult to disengage due to excessive rotation, ensuring that the trigger module 5 operates accurately and stably, and improving the stability of the trigger module 5.

[0026] Furthermore, such as Figure 7 As shown, an angle limiting groove 510 is provided on the outer side of the follower block 51, and a limiting block 511 is provided on the transmission seat 61 in the direction of the angle limiting groove 510. The limiting block 511 is located on the rotation path of the follower block 51 and is used to abut against the inner sidewall of the angle limiting groove 510. The angle limiting groove 510 of the follower block 51 and the limiting block 511 of the transmission seat 61 cooperate to limit the rotation angle of the follower block 51. This can prevent the follower block 51 from being damaged by overload due to excessive rotation angle, and prevent the position of the protrusion 55 from shifting, ensuring that the protrusion 55 can contact the inclined surface of the wedge block 53 after reaching the trigger position.

[0027] As a preferred option, such as Figure 9 and Figure 10 As shown, the automatic tensioning adjustment mechanism of the line-driven high-speed conveyor also includes a positioning module 7 set on the conveyor track 1. The positioning module 7 includes a positioning column 71 and a positioning drive component 72. The conveyor platform 2 has a positioning groove, which is inserted into the positioning column 71. When the conveyor platform 2 moves to the trigger position, the positioning drive component 72 is used to drive the positioning column 71 to move closer to or away from the positioning groove. When the conveyor platform 2 moves to the trigger position, the positioning drive component 72 drives the positioning column 71 to insert into the positioning groove, which can fix the position of the conveyor platform 2 during the tensioning process, avoid the conveyor platform 2 from shifting due to the tension change of the drive line 3, ensure the precise coordination of the trigger module 5 and the tensioning module 6, and improve the accuracy of tension adjustment. It should be noted that the positioning drive component 72 can be a linear cylinder or a rotary cylinder. When a linear cylinder is used, the positioning pin 71 is connected through the cylinder piston rod, and the positioning pin 71 is driven to complete the insertion with the positioning groove by linear motion. When a rotary cylinder is used, the positioning pin 71 is connected through the cylinder piston rod, and the positioning pin 71 is driven to complete the insertion with the positioning groove by rotary motion. There is no restriction here. In actual assembly, when the positioning post 71 is inserted into the positioning groove, a small displacement space is left between the positioning post 71 and the positioning groove so that the conveying platform 2 can move slightly to drive the protrusion 55 on the follower block 51 to abut against the inclined surface of the wedge block 53.

[0028] It should also be noted that the conveyor track 1 can be set as any one of a straight track, a circular track, an elliptical track or a rectangular track, which can make the tensioning mechanism adapt to different layouts of line-driven conveyor lines and broaden its application scenarios.

[0029] As a preferred option, such as Figure 8 and Figure 11 As shown, the line drive module 4 includes a circulating drum 41, a drive motor 42, and a line support wheel set 43. The circulating drum 41 is rotatably mounted on the conveying track 1. The output shaft of the drive motor 42 is coaxially fixedly mounted on the circulating drum 41. The drive line 3 is wound onto the circulating drum 41 with both ends extending out and connected to the conveying platform 2 and wound onto the tension drum 63, respectively. The line support wheel set 43 is used to support the drive line 3 and guide the drive line 3 to form a closed loop route. The line drive module 4 forms a closed loop route for the drive line 3 through the circulating drum 41, the drive motor 42, and the line support wheel set 43. The module drives the circulating drum 41 to perform forward and reverse rotation through the drive motor 42, realizing the cyclic transmission of the drive line 3 and ensuring the stable transmission of power for the reciprocating motion of the conveying platform 2. By setting the line support wheel set 43, the drive line 3 can be guided along the route, optimizing the force distribution of the drive line 3, reducing line wear, and extending its service life. It should be noted that the line support wheel group 43 may include several guide wheels. By arranging several guide wheels according to the shape of the conveyor track 1, it can adapt to conveyor tracks 1 of different shapes. Then, the drive line 3 extends out of both ends of the circulating drum 41 and is placed on several guide wheels on the path so that the guide wheels play a supporting and guiding role.

[0030] As a preferred option, such as Figure 6 and Figure 11 As shown, the automatic tensioning adjustment mechanism of the line-driven high-speed conveyor also includes a position sensing module mounted on the conveyor track 1. The position sensing module includes a working position sensor 8, a trigger position sensor 9, and a controller 10. The working position sensor 8 is located in the middle section of the conveyor track 1 and is used to detect the conveyor platform 2 passing through it. The trigger position sensor 9 is located at the end of the conveyor track 1 and is used to detect the conveyor platform 2 at the trigger position. The working position sensor 8, the trigger position sensor 9, and the line-driven module 4 are all controlled and connected to the controller 10. The working position sensor 8 can detect the conveyor platform 2 passing through the middle section of the conveyor track 1, and the trigger position sensor 9 can detect the conveyor platform 2 at the end of the conveyor track 1 at the trigger position. The conveyor platform 2 is monitored, and both transmit the detected position signals to the controller 10. This allows the controller 10 to monitor the real-time running position of the conveyor platform 2 in the middle working section and accurately capture the timing when the conveyor platform 2 reaches the trigger position at the end of the conveyor track 1. This provides accurate signal basis for the subsequent positioning module 7 to drive the positioning column 71 to insert into the positioning groove of the conveyor platform 2 and for the trigger module 5 to start the tensioning action. This avoids false triggering or delay of tensioning due to the position judgment deviation of the conveyor platform 2. At the same time, it realizes the monitoring of the position of the conveyor platform 2 throughout its entire stroke, further improving the comprehensiveness and accuracy of the mechanism's automated control, ensuring the coordinated and orderly transmission of materials and automatic tensioning action of the conveyor line, and reducing operational failures caused by the lack of position monitoring. It should be noted that, for the position sensing module, in actual operation, multiple working position sensors 8 can be set on the conveying track 1. Technicians can determine whether the conveying platform 2 is in a normal material transmission state by setting the number of times and time that the conveying platform 2 passes through different working position sensors 8. They can also actively control the conveying platform 2 to move to the trigger position. If the conveying platform 2 is not in a normal material transmission state, the working position sensor 8 can send a signal to the line drive module 4, so that the drive line 3, driven by the line drive module 4, drives the conveying platform 2 to move to the trigger position, and sends a signal to the positioning module 7 through the trigger position sensor 9, so that the positioning module 7 fixes the conveying platform 2 for subsequent tensioning processes.

[0031] The implementation principle of an automatic tension adjustment mechanism for a line-driven high-speed conveyor line according to an embodiment of this application is as follows: During operation, in the material transfer phase, the drive motor 42 drives the conveyor platform 2 to reciprocate along the track. The working position sensor 8 monitors its position, and the second one-way bearing 58 restricts the central shaft 62 from reversing to maintain the tension of the conveyor line. When the drive line 3 extends and moves the conveyor platform 2 to the end of the track, the position sensor 9 is triggered to transmit a signal to the controller 10. The controller 10 controls the positioning post 71 of the positioning module 7 to insert into the positioning groove of the conveyor platform 2 to fix the position. Then, the slight movement of the conveyor platform 2 causes the protrusion 55 on the follower block 51 to abut against the inclined surface of the wedge block 53, pushing the follower block 51 to rotate in the first rotation direction, thus maintaining tension. The cylinder 63 moves and rotates axially under the threaded engagement to complete the winding of the drive line 3, thereby compensating for the elongation of the drive line 3. After tensioning, the controller 10 controls the positioning column 71 to disengage, and the conveying platform 2 moves in the opposite direction to make the protrusion 55 disengage from the wedge block 53. The wedge block 53 and the follower block 51 are reset under the action of the spring 54 and the torsion spring 56. The second one-way bearing 58 maintains the tension of the drive line 3, and the conveying platform 2 returns to the middle section of the conveying track 1 to resume material transmission. The entire mechanism realizes online automatic tensioning without stopping or manual intervention, which can solve the problems of adjustment lag, downtime loss and poor adaptability of traditional methods.

[0032] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An automatic tension adjustment mechanism for a line-driven high-speed conveyor line, characterized in that, include: The conveyor frame, conveyor track (1) and conveyor platform (2) are provided. The conveyor track is fixedly installed on the conveyor frame. The conveyor platform (2) is slidably connected to the conveyor track (1). The conveyor platform (2) is equipped with a tensioning module (6). The tensioning module (6) includes a transmission seat (61), a central shaft (62) and a tensioning cylinder (63). The transmission seat (61) is fixedly installed on the conveyor platform (2). The central shaft (62) is rotatably installed on the transmission seat (61). The tensioning cylinder (63) is coaxially sleeved on the central shaft (62). The drive line (3) and the line drive module (4) are connected at one end to the conveying platform (2) and at the other end to the tensioning drum (63). The line drive module (4) is installed on the conveyor frame and is used to drive the drive line (3) to drive the conveying platform (2) to move back and forth on the conveying track (1). The trigger module (5) is located at the end of the conveyor frame. There is a trigger position on the conveyor track (1). When the conveyor platform (2) moves to the trigger position, the trigger module (5) drives the central shaft (62) to rotate along the first rotation direction.

2. The automatic tensioning adjustment mechanism for a line-driven high-speed conveyor line as described in claim 1, characterized in that, A sliding key (64) is provided on the outer side of the central shaft (62) along its own length direction. A groove (65) is provided inside the tensioning cylinder (63) for sliding engagement with the sliding key (64). The tensioning cylinder (63) and the central shaft (62) are slidably connected through the groove (65) and the sliding key (64). An installation sleeve (67) is provided between the tensioning cylinder (63) and the central shaft (62). The central shaft (62) passes through the installation sleeve (67) and does not contact the installation sleeve (67). The installation sleeve (67) is fixedly installed on the transmission seat (61) and has an external thread section on its outer side. An internal thread section is provided on the inner side of the tensioning cylinder (63) for thread engagement with the external thread section. The tensioning cylinder (63) is threadedly connected to the installation sleeve (67) through the engagement of the internal thread section and the external thread section.

3. The automatic tensioning adjustment mechanism for a line-driven high-speed conveyor line as described in claim 1, characterized in that, The trigger module (5) includes a follower block (51), a mounting base (52), a wedge block (53), and a spring (54). The follower block (51) is located at the end of the central shaft (62) away from the tension cylinder (63), and a protrusion (55) is fixedly connected to its outer side. A torsion spring (56) is provided between the follower block (51) and the central shaft (62). The torsion spring (56) is sleeved on the central shaft (62), and one end of it is fixedly connected to the follower block (51). 1) When rotating in the first rotation direction, the torsion spring (56) is used to provide the follower block (51) with an elastic restoring force to rotate in the second rotation direction. A first one-way bearing (57) is provided between the follower block (51) and the central shaft (62). The first one-way bearing (57) is sleeved on the central shaft (62). The inner ring of the first one-way bearing (57) is fixedly connected to the central shaft (62), and the outer ring of the first one-way bearing (57) is fixedly connected to the follower block (51). When the follower block (51) rotates in the first rotation direction, the outer ring and inner ring of the first one-way bearing (57) are locked, allowing the first one-way bearing (57) and the central shaft (62) to rotate together in the first rotation direction. Furthermore, when the follower block (51) rotates in the second rotation direction, the outer ring and inner ring of the first one-way bearing (57) are in an active state, the outer ring of the first one-way bearing (57) can rotate in the second rotation direction, and the inner ring of the first one-way bearing (57) and the central shaft (62) are in a stationary state, and the first rotation direction is opposite to the second rotation direction. The mounting base (52) is fixedly installed at the end of the conveyor frame, the wedge block (53) is rotatably connected to the mounting base (52), and one end of the spring (54) is fixedly connected to the mounting base (52) and the other end is fixedly connected to the straight end of the wedge block (53) away from its inclined surface. When the conveying platform (2) moves to the trigger position, the bump (55) is located below the inclined surface of the wedge block (53) and abuts against the inclined surface of the wedge block (53).

4. The automatic tensioning adjustment mechanism for a line-driven high-speed conveyor line as described in claim 1, characterized in that, A second one-way bearing (58) is provided between the transmission seat (61) and the central shaft (62). The second one-way bearing (58) is sleeved on the central shaft (62). The inner ring of the second one-way bearing (58) is fixedly connected to the central shaft (62), and the outer ring of the second one-way bearing (58) is fixedly connected to the transmission seat (61). The second one-way bearing (58) is used to prevent the central shaft (62) from rotating in the second rotation direction.

5. An automatic tensioning adjustment mechanism for a line-driven high-speed conveyor line as described in claim 3, characterized in that, The trigger module (5) also includes a limiting post (59), which is fixedly connected to the mounting base (52) and is used to abut against the flat end of the wedge block (53) near its inclined surface.

6. An automatic tensioning adjustment mechanism for a line-driven high-speed conveyor line as described in claim 3, characterized in that, An angle limiting groove (510) is provided on the outer side of the follower block (51), and a limiting block (511) is provided on the transmission seat (61) in the direction of the angle limiting groove (510). The limiting block (511) is located on the rotation path of the follower block (51) and is used to abut against the inner wall of the angle limiting groove (510).

7. An automatic tensioning adjustment mechanism for a line-driven high-speed conveyor line as described in claim 1, characterized in that, It also includes a positioning module (7) set on the conveying track (1). The positioning module (7) includes a positioning column (71) and a positioning drive (72). The conveying platform (2) has a positioning groove, which is inserted into the positioning column (71). When the conveying platform (2) moves to the trigger position, the positioning drive (72) is used to drive the positioning column (71) to move closer to or away from the positioning groove.

8. An automatic tensioning adjustment mechanism for a line-driven high-speed conveyor line as described in claim 1, characterized in that, The conveying track (1) can be any one of a straight track, a circular track, an elliptical track or a rectangular track.

9. An automatic tensioning adjustment mechanism for a line-driven high-speed conveyor line as described in claim 1, characterized in that, The line drive module (4) includes a circulating drum (41), a drive motor (42), and a line support wheel assembly (43). The circulating drum (41) is rotatably mounted on the conveying track (1). The output shaft of the drive motor (42) is coaxially fixedly mounted on the circulating drum (41). The drive line (3) is wound on the circulating drum (41) with its two ends extending out and connected to the conveying platform (2) and wound on the tensioning drum (63) respectively. The line support wheel assembly (43) is used to support the drive line (3) and guide the drive line (3) to form a closed loop route.

10. An automatic tensioning adjustment mechanism for a line-driven high-speed conveyor line as described in claim 1, characterized in that, It also includes a position sensing module set on the conveying track (1). The position sensing module includes a working position sensor (8), a trigger position sensor (9), and a controller (10). The working position sensor (8) is set in the middle section of the conveying track (1) and is used to detect the conveying platform (2) passing through the working position sensor (8). The trigger position sensor (9) is set at the end of the conveying track (1) and is used to detect the conveying platform (2) located at the trigger position. The working position sensor (8), the trigger position sensor (9), and the line drive module (4) are all controlled and connected to the controller (10).

Images