Transmission limiting device and method for heat preservation vibration groove cleaning pipe

Abstract

The invention relates to the technical field of cigarette production, and discloses a transmission limiting device and method for a heat preservation vibration groove cleaning pipe. The device comprises a hollow structure arranged in a workbench, and guide rods extending in the conveying direction are arranged on the two sides of the inner wall of the hollow structure; the sliding supporting assembly is composed of a supporting plate and a supporting base which are fixed to the output end of the driving mechanism, and guide channels are formed in the side walls of the supporting plate and the supporting base and are in sliding fit with the guide rods. The driving mechanism is located in the hollow structure, the servo motor drives the ball screw and the ball nut seat to drive the supporting assembly to reciprocate, and the connecting plate is detachably connected to the supporting seat through the connecting rod; the pipe fitting clamping unit is composed of a fixing plate, an adjusting screw rod and a clamping plate and is matched with the bearing piece to clamp and support the cleaning pipe. The device is in modular layout, rapid assembly and maintenance are facilitated, it is ensured that the cleaning pipe stably operates along the inner wall of the vibration groove, and efficient and automatic cleaning of the heat-preservation vibration groove is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of cigarette production, and in particular relates to a transmission limiting device and method for a heat-insulating vibration trough cleaning pipe. Background Art

[0002] During tobacco industry tobacco leaf processing in tobacco-making workshops, a combination of a Sirox expansion unit and an insulated vibration trough is typically used to rapidly expand the cut tobacco leaves. The Sirox expansion unit applies high-temperature, high-humidity steam to the leaves, causing them to rapidly absorb water and expand. The insulated vibration trough then receives the expanded, high-temperature, high-humidity leaves. Its insulation structure maintains a stable temperature and humidity environment within the trough, while slowly conveying the leaves through vibration, effectively minimizing moisture loss. This process ensures that the leaves maintain an appropriate moisture content and expansion state before entering the tobacco drying machine for dehydration, thereby improving the filling value and processing adaptability of the leaves, while also enhancing the aroma and flavor of the cigarettes and improving the smoking quality.

[0003] However, during this process, the expanded tobacco shreds are very likely to adhere to the inner wall or bottom of the heat-insulating vibration trough due to their high moisture content, loose structure, and increased viscosity of the fiber surface. If these attached tobacco shreds are not removed in time, they will stick to and entangle with the subsequently transported expanded tobacco shreds, gradually accumulating to form clumps of tobacco containing wet clumps, which are mixed with the normal tobacco shreds. These wet clumps have a dense structure and high water content, and even after subsequent hot air drying, the moisture inside them is difficult to completely evaporate. Ultimately, these wet clumps enter the market along with the finished cigarettes, and the residual moisture slowly precipitates, resulting in the appearance of "yellow spots" on the surface of the cigarettes, seriously affecting the appearance and quality of the cigarettes, and becoming a major source of defects in quality control in the tobacco-making workshop.

[0004] Therefore, in order to reduce the production of wet tobacco clumps and ensure the quality of finished tobacco, the inner wall of the insulated vibration trough needs to be cleaned frequently and effectively. In existing cleaning systems, a relatively simple structure of a single-sided slide rail combined with a chain drive or a single-sided push rod linear drive insulated vibration trough cleaning tube transmission limit mechanism is mostly used. This type of mechanism usually consists of a drive motor arranged on one side of the trough body, which drives the insulated vibration trough cleaning tube to reciprocate along the inner wall of the trough body through a chain, belt or push rod assembly. The insulated vibration trough cleaning tube scrapes, brushes or rinses the tobacco residue and water vapor condensation on the surface of the trough wall through the scraper, bristles or nozzle structure provided on its outside, thereby realizing automatic cleaning operations in the trough. This type of one-sided drive structure has the advantages of small space occupation, low processing and manufacturing cost, and easy installation and maintenance due to its compact layout, short drive chain and simple control system. Therefore, it is widely used in existing silk-making workshops and is particularly suitable for renovation scenarios with limited equipment structure or medium and low-frequency cleaning needs.

[0005] However, in actual use, operators reported incomplete cleaning of certain areas of the tank wall, or problems with the cleaning mechanism becoming stuck, shaking, or operating erratically during reciprocating motion, impacting cleaning efficiency and the equipment's continuous operation. After tracking and analyzing long-term field operations, it was discovered that these issues primarily stemmed from the existing structure's widespread use of a single-sided drive system. This resulted in uneven force applied to the cleaning mechanism during movement within the tank, causing it to deflect or oscillate, reducing operational stability and cleaning coverage.

[0006] In order to solve at least one of the above problems, the present application is proposed. Summary of the Invention

[0007] In order to solve the above problems, the purpose of the present invention is to provide a transmission limit device for a heat-insulating vibration trough cleaning tube and an operating method thereof. By setting a sliding support structure with multi-point guidance and ball screw drive, and cooperating with a pipe clamping assembly with stable clamping and reliable support, the guiding accuracy and clamping stability of the cleaning tube during its operation along the trough body are improved, and the cleaning tube is prevented from deflecting, shaking or getting stuck during operation, thereby achieving efficient, continuous and uniform cleaning of the inner wall of the heat-insulating vibration trough by the cleaning tube, significantly improving the cleaning operation effect and reducing the formation of wet tobacco clumps.

[0008] The present invention adopts the following technical solutions:

[0009] The first aspect of the present invention provides a transmission limit device for a heat-insulating vibration trough cleaning pipe.

[0010] The workbench 1 has a hollow structure extending in the direction of the cleaning tube, and at least two parallel guide rods 11 extending in the direction of the cleaning tube are provided on two opposite inner side walls of the hollow structure.

[0011] The sliding support assembly includes a support plate 2 and a support base 3 located above the support plate 2. The support plate 2 is fixedly connected to the top of the output end of the drive mechanism. The support plate 2 and the support base 3 are respectively provided with groove structures on the facing side walls. The two grooves are combined to form a guide channel that slides with the guide rod 11.

[0012] The driving mechanism is provided in the hollow structure and below the sliding support assembly, and is a linear driving device for driving the sliding support assembly to move back and forth along the guide rod 11, and the bottom of the output end thereof is connected to the connecting plate 4;

[0013] A linkage connection assembly, comprising the connection plate 4 and a connection rod 5 for detachably connecting the connection plate 4 to the support base 3;

[0014] Pipe clamping unit, comprising:

[0015] a pair of vertical fixing plates 6 oppositely disposed on the top of the support base 3;

[0016] Two adjusting screws 7 pass through the two fixing plates 6 respectively, and the opposite ends are fixedly connected to the clamping plates 71 respectively. By rotating the adjusting screws 7, the two clamping plates 71 are driven to move toward or away from each other.

[0017] Preferably, the pipe clamping unit further includes a supporting member 72 , which is provided on the support seat 3 and located between the two fixing plates 6 for supporting the bottom of the cleaning pipe.

[0018] Preferably, the driving mechanism comprises:

[0019] The drive mounting bases fixed to both ends of the inner wall of the hollow structure are the first mounting base 81 and the limiting plate 82;

[0020] A ball screw 83, one end of which passes through the first mounting seat 81 and is connected to the output end of the servo motor, and the other end of which is rotatably connected to the limit plate 82 through a bearing;

[0021] The ball nut seat 84 is sleeved on the outer periphery of the ball screw 83 , with its top fixedly connected to the support plate 2 and its bottom fixedly connected to the connecting plate 4 .

[0022] Preferably, the ball nut seat 84 is located between the support plate 2 and the connecting plate 4 , with its top fixedly connected to the support plate 2 and its bottom fixedly connected to the connecting plate 4 .

[0023] Preferably, the guide channel is a U-shaped groove opened on the facing side walls of the support plate 2 and the support seat 3 , and the two U-shaped grooves are spliced together to form a sliding channel for accommodating the guide rod 11 .

[0024] Preferably, the supporting member 72 is connected to the supporting seat 3 via an oblique support rod 73 , one end of the oblique support rod 73 is fixed to the supporting seat 3 , and the other end extends obliquely upward and connected to the supporting member 72 .

[0025] Preferably, a limiting ring 9 is sleeved on the adjusting screw 7 , and the limiting ring 9 is located between the clamping plate 71 and the fixing plate 6 to limit the axial movement range of the clamping plate 71 .

[0026] Preferably, the supporting member 72 is an arc-shaped supporting plate, and its arc surface shape matches the outer wall of the bottom of the cleaning tube.

[0027] Preferably, a rubber pad 74 is provided on the arcuate surface of the supporting member 72 to enhance the support stability of the cleaning tube and prevent slipping.

[0028] The second invention of the present invention provides a method for implementing transmission limiting of a cleaning pipe using the transmission limiting device described in the first aspect, characterized by comprising the following steps:

[0029] Step (1), sleeve the guide channel formed by the support plate 2 and the support seat 3 of the sliding support assembly through the groove on the outer peripheral wall of the guide rod 11;

[0030] Step (2), rotating the adjusting screw 7 to adjust the spacing between the clamping plates 71 to clamp or release the cleaning tube;

[0031] Step (3), support the bottom of the cleaning tube by the support member 72 and fix the cleaning tube with the clamping plate 71;

[0032] Step (4), start the servo motor to drive the ball screw 83 to rotate, so that the ball nut seat 84 drives the support plate 2 to move back and forth along the guide rod 11;

[0033] Step (5) controls the start and stop and the rotation direction of the servo motor to drive the cleaning tube to move back and forth along the inner wall of the vibration tank to complete the cleaning operation.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. The present invention realizes the double-track sliding guide of the cleaning pipe support mechanism by arranging two guide rods extending along the conveying direction of the cleaning pipe inside the workbench and arranging a spliced guide channel cooperating with the guide rods on the sliding support assembly. The guide length is long and the constraint accuracy is high, which effectively prevents deviation, swing and jamming during operation, and significantly improves the movement stability and cleaning coverage uniformity of the cleaning pipe in the insulation vibration trough.

[0036] 2. The present invention utilizes a servo motor to rotate the ball screw, driving the ball nut seat to reciprocate in a linear direction. The nut seat is fixedly connected to the support plate, and the motion is transmitted to the support seat and clamping structure above via a connecting rod, forming a rigid, continuous force transmission chain with a clear transmission path. This structure ensures smooth transmission of driving force from bottom to top, effectively avoiding problems such as shaking, misalignment, or loose clamping caused by uneven force. This ensures that the cleaning tube maintains a stable posture during operation, achieving higher precision and greater reliability in tank cleaning operations.

[0037] 3. The cleaning tube is adjustable and clamped by a twin-screw driven clamping plate structure. Combined with the arc-shaped support structure set in the center, it can effectively fix cleaning tubes of different diameters or materials to prevent unstable behaviors such as sliding and rotation during the cleaning process. At the same time, the clamping plate stroke is limited by the limit ring to avoid deformation or damage of the cleaning tube caused by excessive clamping.

[0038] At the same time, the arc-shaped support member arranged under the clamping assembly fits well with the shape of the cleaning tube. A flexible rubber pad is provided on its surface to increase the friction coefficient of the supporting contact surface, enhance the stable supporting effect of the cleaning tube, and avoid sinking or displacement of the cleaning tube caused by vibration of the tank body or changes in the cleaning load.

[0039] 4. To improve the adaptability and maintenance convenience of the device, the present invention adopts a modular design in structure. Specifically, the device consists of five functional units: a guide module, a sliding support module, a drive module, a linkage module, and a clamping module. The structural interface of each unit is clear, which is convenient for manufacturing and assembly. Considering the maintenance and use requirements of the entire system, the above five functional units can be further summarized into three modules, namely the drive module, the guide module, and the clamping module. Specifically including:

[0040] The drive module consists of a servo motor, a ball screw, a ball nut seat and mounting structures at both ends (such as the first mounting seat and the limit plate), which is used to provide a smooth reciprocating drive for the cleaning pipe;

[0041] The guide module includes a guide rod arranged on the inner wall of the hollow structure of the workbench, and a support plate and a support seat that slide with the guide rod. The stability of the motion path is ensured by the limiting effect of the guide channel.

[0042] The clamping module consists of a fixing plate, an adjusting screw, a clamping plate and a supporting structure installed on a supporting seat, and is used for adjustably clamping and supporting the cleaning pipe.

[0043] The three modules are connected by standard fasteners, with clear structural interfaces and no interference, allowing for independent assembly and disassembly, quick replacement, and flexible combination. This modular design not only significantly reduces the difficulty of equipment maintenance and adjustment, but also allows for flexible configuration and expansion of guide rail length, clamping opening, and drive stroke parameters based on the structural dimensions, cleaning range, or cleaning frequency requirements of different insulation vibration troughs. This design offers excellent system adaptability and engineering scalability, making it particularly suitable for retrofitting and upgrading existing equipment and customizing new equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without inventive effort. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0045] Figure 1 It is a first isometric view of the present invention;

[0046] Figure 2 It is a second isometric view of the present invention;

[0047] Figure 3 It is a schematic diagram of the front cross-sectional structure of the present invention;

[0048] Figure 4It is a schematic diagram of the right side cross-sectional structure of the present invention;

[0049] Figure numerals: A, cleaning tube; 1, workbench; 11, guide rod; 2, support plate; 3, support seat; 4, connecting plate; 5, connecting rod; 6, fixing plate; 7, adjusting screw; 71, splint; 72, supporting member; 73, diagonal support rod; 81, first mounting seat; 82, limiting plate; 83, ball screw; 84, ball nut seat; 9, limiting ring. DETAILED DESCRIPTION

[0050] The present application is further described in detail below with reference to the embodiments.

[0051] Example 1

[0052] In order to verify the structural rationality and motion stability of the transmission limit device of the present invention, the following Figure 1-4 , the structural layout and assembly debugging of each module of the device are explained in detail, so that the relevant technical personnel can implement it accordingly.

[0053] The transmission limit device of the heat preservation vibration trough cleaning pipe of the present invention mainly includes five modules: a guide module, a sliding support module, a driving module, a linkage module and a clamping module, wherein:

[0054] The guide module includes a workbench 1 and a guide structure provided thereon. The workbench 1 is composed of four columns and four crossbeams connected by welding or bolts to form a rectangular frame, which encloses a through longitudinal open channel 11, which is used to provide a linear motion path for the sliding support assembly. On the inner side walls of the columns on both sides of the channel, two guide rods 11 extending along the conveying direction of the cleaning pipe are symmetrically arranged. The two ends of the guide rod 11 are mounted on the inner wall of the column through a metal fixing seat. The fixing seat is firmly connected to the column by bolts or welding, which plays the role of limiting and supporting the end of the guide rod. The fixing seat at the end of the guide rod is provided with a through-hole structure that cooperates with the guide rod. The guide rod is positioned by interference fit, screw locking or pin plugging to achieve end limit fixation and facilitate disassembly and maintenance. The surface of the guide rod is coated with polytetrafluoroethylene (PTFE) coating to reduce the sliding friction coefficient and improve the operating stability and guiding accuracy of the sliding support assembly.

[0055] The sliding support module comprises a support plate 2 and a support seat 3, both machined from steel plate and located on either side of the middle of the guide module. Semicircular U-shaped grooves are provided on the opposing sidewalls of the support plate 2 and support seat 3. When aligned vertically, these grooves form a closed circular guide channel extending along the direction of the cleaning tube's conveyance. These channels are fitted onto guide rods 11. This guide channel provides a clearance fit with the guide rods to ensure sliding positioning, ensuring low-resistance, rock-free, and non-binding linear motion of the sliding support assembly on the guide rods.

[0056] The driving module includes a first mounting seat 81 fixed on the column at one end of the workbench 1 frame and a limit plate 82 fixed on the opposite column. The servo motor is installed on the outside of the first mounting seat 81, and its output shaft is concentrically connected to the ball screw 83 through a coupling to drive the screw to rotate. One end of the ball screw 83 is supported by the first mounting seat 81, and the other end passes through the limit plate 82. The rolling bearing installed on the limit plate 82 is used to achieve rotational fit to ensure stable rotation of the screw. The ball nut seat 84 is sleeved on the outer periphery of the ball screw 83, the top is fixed to the bottom surface of the support plate 2 by bolts, and the bottom is connected to the connecting plate 4 by bolts to form a rigid drive structure, realizing efficient reciprocating transmission of the cleaning tube A. One end of the connecting rod 5 is fixed to the connecting plate 4 by bolts, and the other end is inserted into the mounting ear hole of the side wall of the support seat 3 through a pin shaft, and is locked by a quick-release pin, forming a stable and easy-to-disassemble connection structure. This structure ensures the rigid integration of the drive module and the support assembly, which not only ensures operational stability but also facilitates routine maintenance and disassembly, avoiding loose connections caused by vibration or load.

[0057] The clamping module includes two parallel fixed plates 6 mounted on the top of the support base 3 to support the clamping structure. Two adjusting screws 7 pass through the two fixed plates 6 respectively, one end of which is adjusted and fixed by a locking nut, and the other end passes through the fixed plate 6 and is welded with a clamping plate 71 at the opposite end of the two adjusting screws 7. The clamping plate 71 is provided with an arc-shaped clamping surface, and a rubber pad 74 is adhered to the surface to increase the clamping friction and protect the surface of the cleaning tube A. By rotating the adjusting screw 7, the clamping plate 71 is driven to move axially to achieve clamping or loosening of the cleaning tube A. The limiting ring 9 is sleeved on the adjusting screw 7 and located between the clamping plate 71 and the fixed plate 6 to limit the axial movement of the clamping plate 71 and prevent over-clamping. A diagonal support rod 73 is welded between the two fixed plates 6. The diagonal support rod 73 is tilted upward and close to the clamping plate 71. Its free end is connected to an arc-shaped support plate 72 that matches the shape of the cleaning tube A. The surface of the support plate 72 is also adhered with a rubber pad 74 to support the bottom of the cleaning tube and prevent slippage.

[0058] This embodiment also carried out whole-machine debugging, specifically, powering on the servo motor, setting the speed and reciprocating stroke of the ball screw 83, and confirming that the sliding support assembly moves smoothly on the guide rod without sticking or abnormal wear; rotating the adjusting screw 7 to test the clamping force and the stopping effect of the limit ring 9; installing the actual cleaning tube and conducting a trial run with the nozzle, and observing that the cleaning tube moves along the inner wall of the vibration groove without deviation, shaking, or loosening, verifying the structural reliability and movement stability of the device.

[0059] It should be noted that to accommodate the clamping requirements of cleaning tubes of varying diameters, the support member 72 and the support base 3 may also be connected via a hinged structure. An adjustable hinged joint is provided between the diagonal support rod 73 and the support base 3 to facilitate adjustment of the support member's tilt angle to achieve close support for the bottom of the cleaning tube. The hinged joint may also be coupled with a locking nut, a stopper hole, or a friction pair structure to reliably lock the support member after angle adjustment, ensuring that the support member remains stable and does not shake during operation.

[0060] Example 2

[0061] The cleaning device described in this embodiment is installed in the insulated vibration trough at the rear end of the Sirox expansion unit in the silk-making workshop of a cigarette factory. The entire device is fixed to a workbench 1. The workbench 1 serves as the device's support frame, carrying guide rods 11 and sliding support components, ensuring the device's structural stability and accurate positioning. The workbench 1 can be mounted near the vibration trough using bolts, a quick-release mechanism, or other methods that ensure the overall stability of the device during operation. This facilitates disassembly, transportation, and reinstallation, meeting the needs of diverse operating environments.

[0062] The length of the vibration tank is about 6 meters. To ensure the cleaning effect and operation stability, its inner wall needs to be cleaned at high frequency every 2 hours. The specific operation steps are as follows:

[0063] Step 1: Splice the support plate 2 and the support seat 3 in the sliding support assembly onto the guide rod 11 through the groove to form a guide channel to achieve accurate covering and sliding positioning of the guide rod 11, ensuring stable sliding of the assembly along the guide rod 11.

[0064] Step 2: rotate the adjusting screw 7 to adjust the spacing of the clamping plates 71 so that the clamping plates 71 can flexibly clamp or release the cleaning tubes 70 according to different diameters, ensuring that the cleaning tubes 70 are firmly fixed and do not slip during operation.

[0065] Step 3: Support the bottom of the cleaning tube 70 with the support member 72 and fix the cleaning tube 70 at three points with the clamping plate 71 to ensure that the cleaning tube 70 remains stable during vibration and reciprocating sliding to avoid shaking and displacement.

[0066] Step 4: Start the servo motor to drive the ball screw 83 to rotate, so that the ball nut seat 84 drives the connected support plate 2 to slide back and forth along the guide rod 11, thereby achieving precise driving of the sliding support assembly.

[0067] Step 5: By controlling the start and stop and the rotation direction of the servo motor, the cleaning tube 70 is moved back and forth along the inner wall of the vibration tank to complete the cleaning operation of the inner wall of the vibration tank, ensuring uniform and efficient cleaning effect.

[0068] Cleaning process and principle:

[0069] The cleaning tube 70, secured by a clamping plate 71 and a support member 72, performs high-frequency reciprocating motion along the inner wall of the vibration tank. A cleaning head 73, suitable for the material of the inner wall of the vibration tank, is mounted at the end of the cleaning tube 70. The cleaning head 73 can be configured as a scraper, brush, or nozzle, depending on actual needs. The scraper and brush directly contact the inner wall of the vibration tank by applying appropriate mechanical pressure, achieving effective physical wiping. The nozzle structure uses high-pressure liquid or air jets to flush away attached impurities, thereby achieving efficient cleaning.

[0070] The reciprocating motion is precisely controlled by a servo motor, which enables the cleaning tube 70 to slide back and forth along the inner wall of the vibration trough at a preset speed and frequency, ensuring that every section of the inner wall of the vibration trough is evenly cleaned, avoiding dead corners and missed areas.

[0071] During the cleaning process, the sliding support assembly is guided by the guide rod 11 to achieve smooth sliding, ensuring that the cleaning tube 70 is in a stable position during the reciprocating motion, reducing vibration and jumping, and improving the cleaning effect and the service life of the device.

[0072] This cleaning method does not require disassembly of the vibration trough and has a high degree of automation. It is suitable for the production environment of a silk-making workshop and can effectively reduce maintenance time and labor costs, thereby improving the overall operating efficiency of the production line.

[0073] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made thereto in form and detail without departing from the scope defined by the claims of the present application. The dimensions described in the drawings and embodiments are not related to specific physical objects and are not used to limit the scope of protection of the present application. The physical dimensions can be selected and changed according to actual needs.

Claims

1. A transmission limit device for a heat-insulating vibration trough cleaning pipe, characterized in that: include: A workbench (1) is provided with a hollow structure extending in the direction of conveyance of the cleaning pipe, and at least two parallel guide rods (11) extending in the direction of conveyance of the cleaning pipe are provided on two opposite inner side walls of the hollow structure; A sliding support assembly comprises a support plate (2) and a support seat (3) located above the support plate (2), wherein the support plate (2) is fixedly connected to the top of the output end of the driving mechanism, and groove structures are respectively provided on the facing side walls of the support plate (2) and the support seat (3), and the two grooves are combined to form a guide channel that slides with the guide rod (11); A driving mechanism is provided in the hollow structure and below the sliding support assembly, and is a linear driving device for driving the sliding support assembly to move back and forth along the direction of the guide rod (11), and a connecting plate (4) is connected to the bottom of the output end thereof; A linkage connection assembly, comprising the connection plate (4) and a connection rod (5) for detachably connecting the connection plate (4) to the support seat (3); Pipe clamping unit, comprising: A pair of fixing plates (6) vertically and oppositely arranged at the top end of the support base (3); Two adjusting screws (7) respectively penetrate the two fixed plates (6), and are provided with clamping plates (71) at opposite ends. The two clamping plates (71) are driven to move toward or away from each other by rotating the adjusting screws (7).

2. The transmission limiting device according to claim 1, characterized in that: The pipe clamping unit further comprises a supporting member (72), which is arranged on the support seat (3) and located between the two fixing plates (6) and is used for supporting the bottom of the cleaning pipe.

3. The transmission limiting device according to claim 1, characterized in that: The driving mechanism comprises: The driving mounting seats fixed to the two ends of the inner wall of the hollow structure are respectively a first mounting seat (81) and a limiting plate (82); A ball screw (83), one end of which passes through the first mounting seat (81) and is connected to the output end of the servo motor, and the other end of which is rotatably connected to the limit plate (82) through a bearing; The ball nut seat (84) is sleeved on the outer periphery of the ball screw (83), and its top is fixedly connected to the support plate (2), and its bottom is fixedly connected to the connecting plate (4).

4. The transmission limiting device according to claim 3, characterized in that: The ball nut seat (84) is located between the support plate (2) and the connecting plate (4), with its top fixedly connected to the support plate (2) and its bottom fixedly connected to the connecting plate (4).

5. The transmission limiting device according to claim 1, characterized in that: The guide channel is a U-shaped groove formed on the facing side walls of the support plate (2) and the support seat (3), and the two U-shaped grooves are combined to form a sliding channel for accommodating the guide rod (11).

6. The transmission limiting device according to claim 2, characterized in that: The supporting member (72) is connected to the supporting seat (3) via an oblique support rod (73), one end of the oblique support rod (73) is fixed to the supporting seat (3), and the other end extends obliquely upward and is connected to the supporting member (72).

7. The transmission limiting device according to claim 1, characterized in that: A limiting ring (9) is sleeved on the adjusting screw (7), and the limiting ring (9) is located between the clamping plate (71) and the fixing plate (6) and is used to limit the axial movement range of the clamping plate (71).

8. The transmission limiting device according to claim 2, characterized in that: The supporting member (72) is an arc-shaped supporting plate, and its arc surface shape matches the outer wall of the bottom of the cleaning tube.

9. The transmission limiting device according to claim 8, characterized in that: A rubber pad (74) is provided on the arc-shaped surface of the supporting member (72) for enhancing the support stability of the cleaning pipe and preventing slippage.

10. A method for implementing transmission limiting of a cleaning pipe using the transmission limiting device according to claim 9, characterized in that: The following steps are involved: Step (1), the support plate (2) and the support seat (3) of the sliding support assembly are assembled into a guide channel through the groove and sleeved on the outer peripheral wall of the guide rod (11); Step (2), rotating the adjusting screw (7) to adjust the spacing between the clamping plates (71) to clamp or release the cleaning tube; Step (3), supporting the bottom of the cleaning tube by the supporting member (72), and fixing the cleaning tube with the clamping plate (71); Step (4), starting the servo motor to drive the ball screw (83) to rotate, so that the ball nut seat (84) drives the support plate (2) to move back and forth along the guide rod (11); Step (5) controls the start and stop and the rotation direction of the servo motor to drive the cleaning tube to move back and forth along the inner wall of the vibration tank to complete the cleaning operation.

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