Roller kiln puller

Abstract

The utility model discloses a kind of roller kiln pull rod devices, roller kiln pull rod device is used to clean roller bar, and roller kiln pull rod device includes box, cleaning pipe and winch.The inner peripheral wall of cleaning pipe is equipped with multiple scrapers, and cleaning pipe includes first semicircular shell and second semicircular shell, first semicircular shell has first axial edge and second axial edge, second semicircular shell has third axial edge and fourth axial edge, first axial edge and third axial edge are rotatably connected by pivoting structure, and second semicircular shell can rotate around pivoting structure so that fourth axial edge and second axial edge are close to each other or separate.Winch is installed to box, and the driving end of winch is connected with pull rope, one end of pull rope is connected with roller bar, and winch can pull pull rope to drive roller bar to pass through cleaning pipe, so that scraper cleans the outer peripheral wall of roller bar.The roller kiln pull rod device is simple in structure, easy to operate, time-saving and labor-saving, and improves overall work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, and in particular to a roller kiln rod pulling device. Background Technology

[0002] In the sintering process of ternary cathode materials using lithium carbonate as the lithium source in a roller kiln, some lithium carbonate decomposes upon heating, producing lithium compound crystals. These crystals readily form at the kiln exhaust port, on both sides of the rollers, or at the top. After melting, they fall and adhere to the roller surface, causing nodules to form on the roller surface. This interferes with the stable movement of the saggers within the kiln, potentially leading to furnace arching accidents. Cleaning these hardened and firmly bonded lithium crystals is extremely difficult; manual cleaning is inefficient and poses safety hazards, ultimately severely impacting production efficiency and safety. Utility Model Content

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, this invention proposes a roller kiln rod pulling device.

[0004] This utility model embodiment provides a roller kiln rod-pulling device for cleaning rollers, the roller kiln rod-pulling device comprising:

[0005] Box;

[0006] A cleaning tube is provided with multiple scrapers on its inner peripheral wall. The cleaning tube includes a first semi-circular shell and a second semi-circular shell. The first semi-circular shell has a first axial edge and a second axial edge. The second semi-circular shell has a third axial edge and a fourth axial edge. The first semi-circular shell is fixedly installed in the housing. The first axial edge and the third axial edge are rotatably connected by a pivot structure. The second semi-circular shell can rotate around the pivot structure so that the fourth axial edge is close to or separates from the second axial edge.

[0007] A winch is installed in the housing. A pull rope is connected to the drive end of the winch. One end of the pull rope is connected to the roller. When the roller passes through the cleaning pipe and moves axially along the cleaning pipe, the scraper at least partially abuts against the outer peripheral wall of the roller.

[0008] According to some embodiments of the present invention, the pivoting structure includes a first circular tube, a second circular tube, and a rotating shaft. The first circular tube is fixedly installed on the first axial edge, the second circular tube is fixedly installed on the third axial edge, and the rotating shaft passes through both the first circular tube and the second circular tube. The second semi-circular shell is capable of rotating around the axis of the rotating shaft.

[0009] The second axial edge is provided with a third circular tube, and the fourth axial edge is provided with a fourth circular tube. The cleaning tube also includes a locking pin. When the fourth axial edge and the second axial edge are close to each other so that the first semi-circular shell and the second semi-circular shell cooperate to form the cleaning tube, the locking pin can be simultaneously inserted into the third circular tube and the fourth circular tube.

[0010] According to some embodiments of the present invention, there are multiple cleaning tubes, which are arranged at intervals along the front-to-back direction and are coaxially arranged.

[0011] According to some embodiments of the present invention, the roller kiln rod pulling device further includes a bracket, which is fixedly installed on the box body, and the first semi-circular shell is fixedly installed on the bracket.

[0012] According to some embodiments of the present invention, the outer peripheral wall of the roller bar is provided with a first through hole, the roller kiln bar pulling device further includes a connecting shaft and a pin, the outer peripheral wall of the connecting shaft is provided with a second through hole, the connecting shaft can be inserted into the roller bar along the axial direction of the roller bar, the pin is simultaneously inserted through the first through hole and the second through hole to fix the connecting shaft and the roller bar relatively, the end of the connecting shaft away from the roller bar is provided with a hook, and the pull rope is connected to the hook.

[0013] According to some embodiments of the present invention, the box body is provided with a partition, the partition is located below the upper end face of the box body, the cleaning pipe is installed on the upper end face of the box body, and the winch is installed on the partition.

[0014] According to some embodiments of the present invention, the upper end face of the box is provided with a first fixed pulley, the front side of the box is provided with a second fixed pulley, the winch is located below the first fixed pulley and behind the second fixed pulley, and the pull rope is connected to the winch, the second fixed pulley and the first fixed pulley in sequence.

[0015] According to some embodiments of the present invention, a ring is provided at the end of the pull rope away from the winch, and the hook is attached to the ring.

[0016] According to some embodiments of the present invention, the bottom of the box is provided with multiple roller assemblies, and the multiple roller assemblies together support the box.

[0017] The roller kiln rod pulling device according to the embodiment of this utility model has at least the following technical effects:

[0018] 1. The winch pulls the rope, causing the rope to move the roller. As the roller moves, it passes through the interior of the cleaning pipe, where scrapers remove lithium crystals from the roller surface. This roller kiln roller-pulling device has a simple structure, is easy to operate, saves time and labor, and improves overall work efficiency.

[0019] 2. The locking pin and the cooperation of the third and fourth round tubes provide a quick and secure locking method. After the cleaning tube is closed, it can quickly fix the first and second semicircular shells into a whole, ensuring the stability and reliability of the cleaning tube structure during the scraping process and preventing the shell from accidentally opening due to vibration or force, which would affect the cleaning effect or safety.

[0020] 3. The opening and closing design of the cleaning tube makes loading and unloading the rollers extremely convenient. The operator only needs to open the second semi-circular shell to easily place or remove the rollers to be cleaned into the lower first semi-circular shell, greatly simplifying the operation. The winch, in conjunction with the pull rope, enables the automatic traction and movement of the rollers within the cleaning tube, automating the scraping process and significantly reducing the labor intensity of workers.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure of the roller kiln rod pulling device according to some embodiments of the present invention;

[0024] Figure 2 This is a partial structural schematic diagram of the roller kiln rod pulling device according to some embodiments of the present invention;

[0025] Figure 3 This is a partial structural schematic diagram of the roller kiln rod pulling device according to some embodiments of the present invention;

[0026] Figure 4 This is a partial structural schematic diagram of the roller kiln rod pulling device according to some embodiments of the present invention;

[0027] Figure 5 This is an exploded view of a portion of the structure of the roller kiln rod-pulling device according to some embodiments of this utility model;

[0028] Figure 6 This is a partial structural schematic diagram of the roller kiln rod pulling device according to some embodiments of the present invention.

[0029] Icon labels:

[0030] Box body 100; roller 110; first through hole 111; connecting shaft 120; second through hole 121; pin 130; hook 131; partition 140; first fixed pulley 151; second fixed pulley 152; third fixed pulley 153; roller assembly 160;

[0031] Cleaning tube 200; scraper 210; bracket 220;

[0032] First semi-circular shell 300; First axial edge 310; Second axial edge 320; Third circular tube 330;

[0033] Second semi-circular shell 400; Third axial edge 410; Fourth axial edge 420; Fourth circular tube 430; Locking pin 440;

[0034] Pivoting structure 500; First circular tube 510; Second circular tube 520; Rotating shaft 530;

[0035] 600 winch; 610 pull rope; 620 ring. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0037] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0039] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0040] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0041] According to some embodiments of this utility model, refer to Figures 1 to 5 The roller kiln rod-pulling device is used to clean the rollers 110. The axis of the rollers 110 is in the front-to-back direction. The roller kiln rod-pulling device includes a housing 100, a cleaning pipe 200, and a winch 600. The axis of the cleaning pipe 200 is in the front-to-back direction, and both ends of the cleaning pipe 200 are open. The inner circumferential wall of the cleaning pipe 200 is provided with multiple scrapers 210. The scrapers 210 can be made of wear-resistant materials such as polyurethane, high-chromium cast iron, or hard alloy to effectively scrape away crystals without being easily worn.

[0042] Reference Figure 3 and Figure 4 The cleaning pipe 200 includes a first semi-circular shell 300 and a second semi-circular shell 400. The first and second semi-circular shells 300 and 400 are preferably made of wear-resistant, corrosion-resistant materials with a certain strength, such as 304 / 316L stainless steel, high-chromium wear-resistant cast steel, or surface-hardened carbon steel. The first semi-circular shell 300 has a first axial edge 310 and a second axial edge 320, which are parallel to each other and extend in the front-rear direction. The second semi-circular shell 400 has a third axial edge 410 and a fourth axial edge 420, which are parallel to each other and extend in the front-rear direction. The first semi-circular shell 300 is fixedly installed in the housing 100. The first semi-circular shell 300 is U-shaped when viewed from front to back with its opening facing upwards. The first axial edge 310 and the third axial edge 410 are rotatably connected by a pivot structure 500, thereby allowing the first and second semi-circular shells 300 and 400 to be rotatably connected. The second semi-circular shell 400 can rotate around the pivot structure 500, allowing the fourth axial edge 420 to approach or separate from the second axial edge 320. A winch 600 is mounted on the housing 100, and a pull rope 610 is connected to the drive end of the winch 600. The pull rope 610 can be made of steel wire rope, synthetic fiber cable such as nylon or polyester rope, or a chain. One end of the pull rope 610 is connected to the roller 110. The winch 600 can pull the pull rope 610 forward, thereby moving the roller 110 forward and through the cleaning pipe 200. During the process of the roller 110 passing through the cleaning pipe 200, the scraper 210 on the inner circumferential wall of the cleaning pipe 200 cleans the outer circumferential wall of the roller 110, thereby scraping away crystals.

[0043] Preferred, refer to Figure 6 The free end of the scraper 210 extends at an angle in the opposite direction to the movement of the roller 110, which facilitates the scraper 210 scraping off the crystals on the roller 110. That is, the roller 110 moves from back to front, while the scraper 210 tilts backward.

[0044] Understandably, referring to Figure 3 At this point, the fourth axial edge 420 can separate from the second axial edge 320, facilitating the placement of the roller 110 onto the first semi-circular housing 300. Then, the second semi-circular housing 400 is rotated so that the fourth axial edge 420 can approach the second axial edge 320. The first and second semi-circular housings 300 and 400 together form the cleaning tube 200. The winch 600 pulls the rope 610, causing the rope to move the roller 110. During this movement, the roller 110 passes through the interior of the cleaning tube 200, and the scraper 210 scrapes off the lithium crystals on the surface of the roller 110. It should be noted that when the fourth axial edge 420 can approach the second axial edge 320, the operator can press the first semicircular shell 300 and the second semicircular shell 400 with their hands to prevent them from separating. Alternatively, magnets are provided on the fourth axial edge 420 and the second axial edge 320 to attract each other and fix them in place. Alternatively, due to the weight of the second semicircular shell 400, it is ensured that the fourth axial edge 420 and the second axial edge 320 can stick together and not separate when the winch 600 pulls the roller 110. Alternatively, the fourth axial edge 420 and the second axial edge 320 are respectively provided with snap-fit ​​structures to achieve a fastening connection.

[0045] This roller kiln roller removal device has a simple structure, is easy to operate, saves time and labor, and improves overall work efficiency. The openable cleaning pipe 200 design makes loading and unloading the rollers 110 extremely convenient. The operator only needs to open the second semi-circular housing 400 to easily place or remove the rollers 110 to be cleaned into or out of the lower first semi-circular housing 300, greatly simplifying the operation. The winch 600, in conjunction with the pull rope 610, enables automatic traction and movement of the rollers 110 within the cleaning pipe 200, automating the scraping process and significantly reducing the labor intensity of workers.

[0046] Preferred, refer to Figure 3 and Figure 4The pivot structure 500 includes a first circular tube 510, a second circular tube 520, and a rotating shaft 530. The first circular tube 510, the second circular tube 520, and the rotating shaft 530 are preferably made of wear-resistant materials, such as surface-hardened medium carbon steel, stainless steel, or bronze bushings, to ensure smooth rotation and durability. The axes of the first circular tube 510, the second circular tube 520, and the rotating shaft 530 are all coaxially arranged in a front-rear direction. The first circular tube 510 is fixedly installed on the first axial edge 310, the second circular tube 520 is fixedly installed on the third axial edge 410, and the rotating shaft 530 passes through both the first circular tube 510 and the second circular tube 520. The second semi-circular shell 400 can rotate about the axis of the rotating shaft 530, thereby rotating relative to the first semi-circular shell 300. The pivot structure 500 has a simple structure, facilitating the rotational connection between the first semi-circular shell 300 and the second semi-circular shell 400. The pivot structure 500 can also use hinges, latches, or integrally formed flexible connectors to achieve relative rotation between the first semicircular shell 300 and the second semicircular shell 400. The pivot structure 500 is simple and reliable in design, ensuring that the second semicircular shell 400 can open and close smoothly and stably around the axis of the pivot shaft 530, ensuring the accuracy and durability of the cleaning tube 200 assembly.

[0047] Preferred, refer to Figure 3 and Figure 4 The second axial edge 320 is provided with a third circular tube 330, and the fourth axial edge 420 is provided with a fourth circular tube 430. The axial directions of the third circular tube 330 and the fourth circular tube 430 are both in the front-back direction. The cleaning tube 200 also includes a locking pin 440. Preferably, the locking pin 440 is slidably connected to the first semi-circular shell 300 and can slide relative to the first semi-circular shell 300 in the front-back direction. When the fourth axial edge 420 and the second axial edge 320 approach each other so that the first semi-circular shell 300 and the second semi-circular shell 400 cooperate to form the cleaning tube 200, the third circular tube 330 and the fourth circular tube 430 move relative to each other and are coaxial. The locking pin 440 can slide forward and pass through the third circular tube 330 and the fourth circular tube 430 simultaneously, thereby fixing the first semi-circular shell 300 and the second semi-circular shell 400 relative to each other. The locking pin 440, together with the third round tube 330 and the fourth round tube 430, provides a quick and secure locking method. After the cleaning tube 200 is closed, it can quickly fix the first semicircular shell 300 and the second semicircular shell 400 into a whole, ensuring that the cleaning tube 200 is structurally stable and reliable during the scraping process, and preventing the shell from accidentally opening due to vibration or force, which would affect the cleaning effect or safety.

[0048] Preferably, there are multiple cleaning tubes 200, which are arranged at intervals in the front-to-back direction and coaxially. The roller 110 can pass through multiple cleaning tubes 200 simultaneously. The scrapers of the multiple cleaning tubes 200 scrape the surface of the roller 110. By setting multiple cleaning tubes 200 in series, the number of scrapers 210 and the coverage area are increased. The surface of the roller 110 is scraped multiple times and more thoroughly in one traction process, which significantly improves the de-crystallization efficiency and effect of a single treatment and improves the de-crystallization efficiency of the roller 110.

[0049] Preferred, refer to Figures 2 to 4 The roller kiln rod pulling device also includes a bracket 220, which is fixedly installed on the housing 100. A first semi-circular shell 300 is fixedly installed on the bracket 220. The bracket 220 can lift the first semi-circular shell 300, creating a certain distance between the roller 110 passing through the cleaning pipe 200 and the upper surface of the housing 100. The bracket 220 lifts the cleaning pipe 200, leaving space between the roller 110 and the upper surface of the housing 100. This space design allows the scraped lithium crystals to fall smoothly onto the upper surface of the housing 100 for temporary storage, effectively preventing the accumulated crystals below the roller 110 from hindering its movement or affecting the subsequent contact of the scraper blade 210 with the roller 110 surface, ensuring the cleaning process continues effectively.

[0050] Preferred, refer to Figure 5 The outer peripheral wall of the roller 110 is provided with a first through hole 111. The roller kiln roller pulling device also includes a connecting shaft 120 and a pin 130. The outer peripheral wall of the connecting shaft 120 is provided with a second through hole 121. The connecting shaft 120 can be inserted into the roller 110 along the axial direction of the roller 110. When the pin 130 is simultaneously inserted into the first through hole 111 and the second through hole 121, the connecting shaft 120 and the roller 110 are relatively fixed. Preferably, the pin 130 is provided with an external thread, and the first through hole 111 and the second through hole 121 are provided with internal threads. The pin 130 is simultaneously inserted and threadedly connected to the first through hole 111 and the second through hole 121, thereby enhancing the connection stability between the roller 110 and the connecting shaft 120. A hook 131 is provided at the end of the connecting shaft 120 away from the roller 110, and the pull rope 610 is connected to the hook 131. The connecting shaft 120 and the roller 110 are detachably connected by a pin 130, which facilitates the pull rope 610 to pull the roller 110 through the connecting shaft 120. The hook 131 design makes the connection and separation between the pull rope 610 and the connecting shaft 120 very simple and quick, further improving the convenience and efficiency of the entire device operation.

[0051] Preferred, refer to Figure 1The housing 100 is provided with a partition 140, which is located below the upper end face of the housing 100. The cleaning pipe 200 is installed on the upper end face of the housing 100, and the winch 600 is installed on the partition 140. The upper end face of the housing 100 is provided with a first fixed pulley 151, the front side of the housing 100 is provided with a second fixed pulley 152, and the upper end of the front side of the housing 100 is provided with a third fixed pulley 153. The winch 600 is located below the first fixed pulley 151 and behind the second fixed pulley 152. The pull rope 610 is connected from one end connected to the winch 600 to the other end sequentially to the second fixed pulley 152, the third fixed pulley 153, and the first fixed pulley 151. The pull rope 610 is sequentially laid on the second fixed pulley 152, the third fixed pulley 153, and the first fixed pulley 151 and connected to the roller 110. With the cooperation of the first fixed pulley 151, the second fixed pulley 152, and the third fixed pulley 153, the direction of the pull rope 610 can be changed. The upper end of the housing 100 separates the winch 600 from the working area, which is the location of the cleaning pipe 200 and the crystal temporary storage area. This helps protect the winch 600 from contamination or damage from falling crystals. The clever arrangement of multiple fixed pulleys changes the traction direction of the pull rope 610, allowing the winch 600 to be installed horizontally at a lower position inside the housing 100, lowering the center of gravity of the equipment, optimizing the force transmission path, making traction smoother, and maintaining the compactness of the housing 100 structure.

[0052] Preferred, refer to Figure 2 The end of the pull rope 610 away from the winch 600 is provided with a ring 620, and the hook 131 can be hung on the ring 620. The cooperation between the ring 620 and the hook 131 is an extremely convenient connection method, which allows the connection and disconnection of the pull rope 610 and the connecting shaft 120 to be completed instantly, which greatly facilitates the operation and improves the efficiency of preparation work.

[0053] Preferred, refer to Figure 1 The bottom of the housing 100 is equipped with multiple roller assemblies 160, each comprising a wheel frame, axle, and rollers. The wheel frame and axle are preferably made of carbon steel or alloy steel; the rollers are preferably made of cast iron, nylon, polyurethane-coated, or pneumatic tires. The multiple roller assemblies 160 collectively support the housing 100, providing excellent mobility for the entire device. This allows for easy movement within the workshop and flexible deployment near kilns where the rollers 110 need cleaning, improving equipment utilization and operational flexibility.

[0054] The workflow of this technical solution includes:

[0055] The first semicircular shell 300 and the second semicircular shell 400 rotate relative to each other, causing the fourth axial edge 420 to separate from the second axial edge 320. The roller 110 is placed on the first semicircular shell 300, and the second semicircular shell 400 is rotated so that the fourth axial edge 420 can approach the second axial edge 320. The first semicircular shell 300 and the second semicircular shell 400 form a cleaning tube 200, and the third circular tube 330 and the fourth circular tube 430 move relative to each other until they are coaxial. The locking pin 440 slides forward and passes through both the third circular tube 330 and the fourth circular tube 430, thereby fixing the first semicircular shell 300 and the second semicircular shell 400 relative to each other. The connecting shaft 120 is inserted rearward into the roller 110, and the pin 130 passes through both the first through hole 111 and the second through hole 121, thereby fixing the connecting shaft 120 and the roller 110 relative to each other. The hook 131 at the front end of the connecting shaft 120 is hung on the ring 620 at one end of the pull rope 610. The winch 600 pulls the rope 610, causing the rope 610 to move the roller 110 forward. During the movement, the roller 110 passes through the inside of the cleaning tube 200, and the scraper 210 scrapes off the lithium crystals on the surface of the roller 110.

[0056] In this specification, the reference to the term "some embodiments" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0057] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A roller kiln puller for cleaning a roller bar (110), characterized in that, The roller kiln bar-pulling device includes: Box (100); A cleaning tube (200) is provided with a plurality of scrapers (210) on its inner peripheral wall. The cleaning tube (200) includes a first semi-circular shell (300) and a second semi-circular shell (400). The first semi-circular shell (300) has a first axial edge (310) and a second axial edge (320). The second semi-circular shell (400) has a third axial edge (410) and a fourth axial edge (420). The first semi-circular shell (300) is fixedly installed on the housing (100). The first axial edge (310) and the third axial edge (410) are rotatably connected by a pivot structure (500). The second semi-circular shell (400) can rotate around the pivot structure (500) so that the fourth axial edge (420) and the second axial edge (320) move closer to each other or separate. A winch (600) is installed in the housing (100). The drive end of the winch (600) is connected to a pull rope (610). One end of the pull rope (610) is connected to the roller (110). When the roller (110) passes through the cleaning pipe (200) and moves axially along the cleaning pipe (200), the scraper (210) at least partially abuts against the outer peripheral wall of the roller (110).

2. The roller kiln pull rod device of claim 1, wherein, The pivot structure (500) includes a first circular tube (510), a second circular tube (520), and a pivot shaft (530). The first circular tube (510) is fixedly installed on the first axial edge (310), the second circular tube (520) is fixedly installed on the third axial edge (410), and the pivot shaft (530) passes through both the first circular tube (510) and the second circular tube (520). The second semi-circular shell (400) is capable of rotating around the axis of the pivot shaft (530).

3. The roller kiln puller bar assembly of claim 1, wherein, The second axial edge (320) is provided with a third round tube (330), and the fourth axial edge (420) is provided with a fourth round tube (430). The cleaning tube (200) also includes a locking pin (440). When the fourth axial edge (420) and the second axial edge (320) are close to each other so that the first semi-circular shell (300) and the second semi-circular shell (400) cooperate to form the cleaning tube (200), the locking pin (440) can be simultaneously inserted into the third round tube (330) and the fourth round tube (430).

4. The roller hearth kiln pull bar apparatus of claim 1, wherein, The cleaning tubes (200) are multiple, and the multiple cleaning tubes (200) are arranged at intervals in the front-back direction and the multiple cleaning tubes (200) are coaxially arranged.

5. The roller hearth kiln pull bar apparatus of claim 1 wherein, The roller kiln rod pulling device also includes a bracket (220), which is fixedly installed on the housing (100), and the first semi-circular shell (300) is fixedly installed on the bracket (220).

6. The roller hearth pull rack of claim 1 wherein, The outer peripheral wall of the roller (110) is provided with a first through hole (111). The roller kiln pulling device also includes a connecting shaft (120) and a pin (130). The outer peripheral wall of the connecting shaft (120) is provided with a second through hole (121). The connecting shaft (120) can be inserted into the roller (110) along the axial direction of the roller (110). The pin (130) passes through both the first through hole (111) and the second through hole (121) to fix the connecting shaft (120) and the roller (110) relative to each other. The end of the connecting shaft (120) away from the roller (110) is provided with a hook (131). The pull rope (610) is connected to the hook (131).

7. The roller hearth kiln puller bar assembly of claim 6, wherein, The housing (100) is provided with a partition (140), which is located below the upper end face of the housing (100). The cleaning pipe (200) is installed on the upper end face of the housing (100), and the winch (600) is installed on the partition (140).

8. The roller hearth kiln puller bar assembly of claim 7, wherein, The upper end face of the housing (100) is provided with a first fixed pulley (151), and the front side of the housing (100) is provided with a second fixed pulley (152). The winch (600) is located below the first fixed pulley (151) and behind the second fixed pulley (152). The pull rope (610) is connected to the winch (600), the second fixed pulley (152) and the first fixed pulley (151) in sequence.

9. The roller hearth puller bar assembly of claim 7, wherein, The end of the pull rope (610) away from the winch (600) is provided with a ring (620), and the hook (131) is hung on the ring (620).

10. The roller hearth pull rack apparatus of claim 1 wherein, The bottom of the housing (100) is provided with a plurality of roller assemblies (160), and the plurality of roller assemblies (160) together support the housing (100).

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