Chain type friction conveying device

Abstract

The chain type friction conveying device comprises a conveying chain and a conveying trolley, and the conveying trolley is located below the conveying chain. The conveying trolley comprises a trolley body and a trolley top friction piece arranged above the trolley body, and a chain friction piece matched with the trolley top friction piece is further arranged at the bottom of the conveying chain. According to the technical scheme, the friction pieces matched with each other are arranged on the conveying trolley and the conveying chain, the conveying trolley is directly driven to advance through the friction force between the friction pieces, the conveying speed is effectively increased, and the problem that the single side of a driving wheel is abraded in an existing rolling bar type friction conveying device is solved.

Description

Technical Field

[0001] This invention relates to the field of automobile manufacturing technology, and more particularly to a conveying device, and more specifically, a chain friction conveying device. Background Technology

[0002] On existing automobile production assembly lines, suspended conveyor systems are commonly used for material transport. Traditional conveyor systems are chain conveyors, where a conveyor chain runs continuously along a conveyor track. The chain engages with a trolley located below it via a matching drag connection device (e.g., a pusher claw at the bottom of the chain and a locking claw at the top of the trolley). The chain then drags the trolley along the track. However, because the pusher claws are intermittently positioned, the trolley cannot start immediately and must wait for the next pusher claw to arrive before connection can be established, resulting in low efficiency. Furthermore, the mechanical connection between the pusher claw and the locking claw causes significant impact during connection. To achieve light-load, high-speed, and impact-free conveying, a friction conveying device (i.e., driving the conveying trolley through friction) has emerged. For example, the roller-type friction conveying device shown in CN105292964A drives the drive shaft (roller) to rotate via a motor. The top of the conveying trolley has an inclined drive wheel, with the axle of the drive wheel forming an acute angle with the axis of the drive shaft. When the outer edge of the drive wheel contacts the outer surface of the drive shaft, the drive wheel also begins to rotate due to friction. The rotating drive wheel generates an axial motion component, thereby driving the conveying trolley to move along the track. This conveying device operates by friction, unlike chain conveying devices which have significant impacts and do not require waiting. Therefore, it has a high conveying speed and can be started at any time. In the process of developing this invention, the inventors discovered at least the following problems in the prior art: In the aforementioned roller-type friction conveying device, due to the inclined arrangement of the drive wheel, the distance traveled after one revolution of the drive wheel is much smaller than the circumference of the drive wheel, resulting in low efficiency. Therefore, with a fixed output power and rotational speed of the drive device, the speed increase of the conveying trolley is limited, and sometimes it still cannot meet the speed requirements. Therefore, how to further improve the conveying speed of the friction conveying device is a problem that needs to be solved. Summary of the Invention

[0003] This invention provides a chain-type friction conveying device to solve the problem of low conveying speed in existing roller-type friction conveying devices. To achieve the above objectives, embodiments of the present invention provide a chain friction conveying device, comprising: a conveying chain and a conveying trolley, the conveying trolley being located below the conveying chain; the conveying trolley includes a vehicle body and a roof friction component disposed above the vehicle body, and a chain friction component that forms static friction with the roof friction component is also disposed at the bottom of the conveying chain. Furthermore, there is one conveyor chain and the chain friction element is a first chain friction element; or, there are two conveyor chains and the chain friction element is a second chain friction element connected to the two conveyor chains. Furthermore, the bottom of the conveyor chain is connected to an outwardly extending connecting plate, and the first chain friction element is connected to the bottom of the connecting plate in a detachable or fixed manner. Furthermore, a support extending outward is connected to the side of the first chain friction member; a first upper guide rail is provided above the conveyor chain, and a first lower guide rail is provided below the support member. Furthermore, the two conveyor chains are arranged in parallel, and the second chain friction element is sandwiched between the two conveyor chains, forming a hamburger-like sandwich structure with the two conveyor chains. Furthermore, the two conveyor chains and the second chain friction element are connected together by a second pin. Furthermore, each conveyor chain is equipped with a second upper guide rail above it and a second lower guide rail below it. Furthermore, the conveyor chain is a roller chain with multiple rollers, and a rolling track for the rollers to roll is formed between the second upper guide rail and the second lower guide rail; the bottom of the second upper guide rail extends into the space between two opposing inner chain plates, and the top of the second lower guide rail extends into the space between two opposing inner chain plates. Furthermore, the roof friction component has a block structure; among the dimensions of the roof friction component, the length dimension > the width dimension > the height dimension. Furthermore, the top surface of the roof friction component and the bottom surface of the chain friction component are both flat. Furthermore, each conveyor trolley is equipped with two roof friction components; the roof friction components are detachably connected to the pallet located below them; lifting rods are connected to the top of the trolley body, and each pallet is connected to two lifting rods distributed at the front and rear. The above technical solution has the following beneficial effects: In this technical solution, a roof friction component is installed on the top of the conveyor trolley. When it is pushed up by the lifting rod and squeezed against the bottom of the conveyor chain, the friction between the two can directly drive the conveyor trolley forward. Unlike existing roller-type friction conveyor devices, there is no need to install drive wheels. At this time, the moving speed of the conveyor chain is the same as the moving speed of the conveyor trolley. Therefore, compared with the existing technology, with the same power of the drive device, the moving speed of the conveyor trolley is greatly improved, thereby effectively improving production efficiency. In addition, this technical solution also has the following characteristics: In existing roller-type friction conveyors, because the rollers rotate in one direction and the drive wheels are located on both sides of the rollers, one side of the drive wheel always experiences greater friction during actual use, resulting in more noticeable wear on that side than the other, a phenomenon known as "uneven wear." This leads to unstable transmission and requires frequent adjustments and maintenance. However, with this new technical solution, the top of the friction component on the roof is flat, resulting in more uniform wear and eliminating uneven wear. Even with minor wear, replacement is unnecessary (similar to existing conveyor trolleys, the lifting rod contains a spring that maintains the pressure of the roof friction component on the conveyor chain). Therefore, maintenance and replacement cycles are longer, reducing equipment and labor costs. Attached Figure Description

[0004] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the structure of a chain friction conveying device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the conveying trolley in an embodiment of the present invention; Figure 3 This is a schematic diagram of the chain structure using the first chain friction element in an embodiment of the present invention; Figure 4 This is a schematic diagram of the installation of the first chain friction component in an embodiment of the present invention; Figure 5 This is a schematic diagram of the chain structure using the second chain friction element in an embodiment of the present invention; Figure 6 This is a schematic diagram of the arrangement of the second chain friction element in the conveying track in an embodiment of the present invention; Figure 7 This is a schematic diagram of the installation of the roof friction component in an embodiment of the present invention; Figure 8 This is a schematic diagram of the installation of the second chain friction component in an embodiment of the present invention; Figure 9 This is a schematic diagram from another perspective of a chain friction conveying device according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the arrangement of the first chain friction element in the conveying track in an embodiment of the present invention; Figure 11 This is a schematic diagram of the installation of the first chain friction component from another perspective in an embodiment of the present invention; Figure 12 This is a cross-sectional schematic diagram of the chain in this invention; Reference numerals: 10. Conveying trolley; 11. Car body; 12. Lifting rod; 121. Rod end neck; 13. Roof friction component; 14. Pallet; 15. Supporting wheel; 16. Brake trigger baffle; 141. Through hole; 20. Conveying rail; 21. Second conveyor chain channel; 22. Second lower guide rail; 23. Second upper guide rail; 24. First conveyor chain channel; 25. First lower guide rail; 26. First upper guide rail; 30. Conveying chain; 31. Chain 311. Inner chain plate; 312. Sleeve; 313. Connecting plate; 32. First pin; 33. Outer chain plate; 331. Outer chain plate hole; 34. Second pin; 35. Roller; 40. Drive unit; 41. First pulley; 42. Second pulley; 50. Chain friction element; 51. First chain friction element; 511. Screw hole; 512. Support element; 52. Second chain friction element; 521. Weight reduction hole; 522. Connecting hole. Detailed Implementation

[0005] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. like Figure 1 , Figure 2 As shown, an embodiment of the present invention provides a chain friction conveying device, including a conveying chain 30 and a conveying trolley 10, the conveying trolley 10 being located below the conveying chain 30; the conveying trolley 10 includes a car body 11 and a car roof friction member 13 disposed above the car body 11, and a chain friction member 50 that forms static friction with the car roof friction member 13 is also disposed at the bottom of the conveying chain 30. To solve the aforementioned problems, this technical solution eliminates the need for rotating rollers and instead uses a conveyor chain 30 set along the conveyor track 20. Power transmission is then achieved through the contact between the conveyor chain 30 and the conveyor trolley 10, thereby increasing the conveying speed. In this application, the conveyor trolley 10 and the conveyor chain 30 travel along the conveyor track 20, such as Figure 6As shown, the conveyor track 20 is made of a profile with multiple passages in the middle. The conveyor trolley 10 relies on the support wheels 15 to support its own weight. The lower side of the conveyor track 20 has a passage for the support wheels 15 to travel, and the upper side also has a passage for the conveyor chain 30 to travel (such as the first conveyor chain channel 24 and the second conveyor chain channel 21 described later). At the same time, a passage is opened in the middle for components such as the lifting rod 12 and the roof friction component 13 to pass through. The structure of the trolley body 11 and the lifting rod 12 of this conveyor trolley 10 is similar to that of the prior art. The core difference is that the top of the lifting rod 12 no longer has a drive wheel, but instead has a roof friction component 13 installed. When the brake trigger baffle 16 at the front end of the trolley body 11 is not triggered, the lifting rod 12 is in a raised state, which will cause the top surface of the roof friction component 13 to contact the bottom surface of the chain friction component 50 above. The friction between the two achieves a rapid connection, thereby causing the conveyor chain 30 to drive the conveyor trolley 10 to move. This method combines the existing friction conveying device with a chain conveying device, replacing the rollers with a conveyor chain 30. In this case, the moving speed of the conveyor chain 30 is the same as the moving speed of the conveyor trolley 10. Therefore, compared with the existing friction conveying device, the moving speed of the conveyor trolley 10 is greatly improved under the same power of the drive device, thereby effectively improving production efficiency. During configuration, such as Figure 1 As shown, a drive device 40 is installed at a specific position on the conveyor track 20. The drive device 40 is preferably a geared motor. The output end of the geared motor is a first pulley 41, which then drives a second pulley 42 to rotate via belt drive. A sprocket is coaxially arranged on the second pulley 42, and the sprocket is used to drive the conveyor chain 30. According to actual measurements, in one specific embodiment, the original roller friction conveying device had a moving speed of 35 m / min for the original conveying trolley. However, when the drive device 40 was modified into the chain friction conveying device of this application without changing the drive device 40, the moving speed of the conveying trolley 10 was 50 m / min. Therefore, the conveying speed was greatly improved. If, during operation, the brake trigger baffle 16 is triggered by a stop device or other facility, the lifting rod 12 will fall via a linkage mechanism installed inside the vehicle body 11. This will cause the roof friction component 13 to detach from the bottom surface of the conveyor chain 30. At this point, power cannot be transmitted to the conveyor trolley 10, causing it to stop operating. The processes of triggering the brake trigger baffle 16 and lowering the lifting rod 12 are similar to existing technologies, and therefore will not be described in detail here. In addition, such as Figure 1As shown, the conveyor chain 30 is wound around two drive sprockets distributed at both ends, and the drive sprockets are driven by the drive device 40. Therefore, the conveyor chain 30 actually forms a closed loop path with two layers of rotation. The conveyor chain 30 referred to in this technical solution refers to the conveyor chain 30 that is currently in the lower layer, because only the conveyor chain 30 in the lower layer can cooperate with the roof friction member 13 below it to provide power for the conveyor trolley 10. Furthermore, the conveyor chain 30 and the chain friction element 50 can take the following two forms: 1) First form: The conveyor chain 30 is a single-row chain, and the corresponding chain friction element 50 is the first chain friction element 51. In this case, since only one row of conveyor chain 30 is set, the cost is lower and it has an advantage in terms of cost, and the structure is relatively simpler; it occupies less space and is suitable for installation in narrow spaces. 2) The second form: The conveyor chain 30 is a double-row chain. Correspondingly, the chain friction element 50 adopts the second chain friction element 52. Compared with the first form, this method is more complex in structure. However, due to the adoption of the hamburger-like structure of double-row conveyor chain 30 plus second chain friction element 52 described later, the two rows of conveyor chains 30 drive the middle second chain friction element 52, resulting in more balanced force and better running stability. like Figure 3 , Figure 4 As shown, this is a specific implementation of the first form. The conveyor chain 30 is a single chain (i.e., a single-row chain), and the conveyor chain 30 is composed of multiple chain links 31 connected together, as follows: Figure 12 As shown, each link 31 consists of two inner chain plates 311 distributed on the left and right sides and two sleeves 312. The sleeves 312 are used to fix the two inner chain plates 311 on both sides together. An outer chain plate 33 is provided on the outer side of each link 31. The outer chain plate 33 has an outer chain plate hole 331. When a first pin 32 (used to connect multiple links 31) passes through the outer chain plate hole 331 and the sleeve 312 in sequence, the outer chain plate 33 can be connected to the link 31. The outer chain plate 33 and the link 31 are staggered, thus connecting two adjacent links 31 together. Simultaneously, in order to install the first chain friction element 51 on the conveyor chain 30 and make it move synchronously with the conveyor chain 30, in this technical solution, as... Figure 4 , Figure 11As shown, a connecting plate 313 extending horizontally outward is fixedly connected to the bottom of each inner chain plate 311. The connecting plate 313 can be formed directly by bending the bottom end of the inner chain plate 311. That is, each inner chain plate 311 and each connecting plate 313 present an integrated L-shaped structure. One chain link has two inner chain plates 311 and two connecting plates 313. In other words, one chain link 31 has two L-shaped structures formed by the inner chain plates 311 and the connecting plates 313. The two L-shaped structures can be arranged symmetrically to achieve smooth chain operation. The connecting plate 313 has openings on its surface, and the flat first chain friction member 51 also has screw holes 511. Then, the first chain friction member 51 can be installed below the connecting plate 313 by bolts. Furthermore, such as Figure 3 As shown, a support member 512 extending horizontally outward is also connected to the side of the first chain friction member 51. Meanwhile, as... Figure 10 As shown, a first upper guide rail 26 is provided above the conveyor chain 30, and a first lower guide rail 25 is provided below the support member 512. In this way, when the conveyor chain 30 is running in the first conveyor chain channel 24, the first upper guide rail 26 can press down on the conveyor chain 30 from above to ensure that when the lifting rod 12 of the conveyor trolley 10 is in the lifted state, the conveyor chain 30 also remains horizontal and will not arch upward. At this time, there can be sufficient pressure between the roof friction member 13 and the first chain friction member 51, thereby generating sufficient friction. The first lower guide rail 25 supports the support member 512, thereby ensuring that the conveyor chain 30 does not sag. In practical applications, such as Figure 3 As shown, it is not necessary to provide a support member 512 for every single first chain friction member 51; one can be provided every few, for example, one support member 512 for every six first chain friction members 51. The support member 512 can be sheet-shaped or strip-shaped to suit spaces with limited thickness, for example... Figure 3 In the middle, the support member 512 is a rectangular sheet to minimize the space and height occupied and provide a larger support surface. like Figure 5 , Figure 8 As shown, the second form is implemented in a specific way. In this case, a double-row chain is used, that is, there are two conveyor chains 30, and the two conveyor chains 30 are arranged in parallel. Then, the second chain friction element 52 is sandwiched between the two conveyor chains 30 to form a hamburger sandwich structure. At this time, the friction driving force can be evenly transmitted to the conveying trolley 10 from both sides, reducing the off-center load phenomenon of the conveying trolley 10, reducing the risk of wear, and ensuring stable operation. Meanwhile, when this hamburger-style sandwich structure is adopted, due to the presence of double-row conveyor chains 30, the corresponding sprockets used for driving must also be made in double rows. That is, two sprockets of the same specification and arranged in parallel are set on the axle where the second pulley 42 is located. The distance between the two sprockets is the same as the distance between the two conveyor chains 30 in the hamburger-style sandwich structure. In this way, when the second pulley 42 rotates, the power is transmitted to the sprockets through the shaft. The two sprockets rotate synchronously, and each sprocket meshes with one conveyor chain 30, thereby driving the entire hamburger-style sandwich structure to run. Furthermore, in this second form, such as Figure 6 As shown, each conveyor chain 30 is provided with a second upper guide rail 23 above it and a second lower guide rail 22 below it. The bottom surface of the second upper guide rail 23 and the top surface of the second lower guide rail 22 are both planes, providing moving tracks for the conveyor chain 30. When the conveyor chain 30 runs in the second conveyor chain channel 21, the second upper guide rail 23 presses down on the conveyor chain 30 from above and the second lower guide rail 22 supports the conveyor chain 30 from below, so that the conveyor chain 30 is in a horizontal state, ensuring that there is sufficient pressure between the roof friction member 13 and the second chain friction member 52, thereby generating sufficient friction. Furthermore, if the conveyor chain 30 is a regular chain, the sleeve 312 will directly contact the second upper guide rail 23 or the second lower guide rail 22. Since the sleeve 312 itself cannot rotate, this results in sliding friction with relatively high frictional force. Therefore, the conveyor chain 30 is preferably a roller chain, and the structure of the roller chain is as follows: Figure 12 As shown, a roller 35 is also fitted on the outside of the sleeve 312. The roller 35 can rotate around the sleeve 312. At this time, the bottom surface of the second upper guide rail 23 can form rolling contact with the roller 35, and the top surface of the second lower guide rail 22 can also form rolling contact with the roller 35 (the distance between the bottom surface of the second upper guide rail 23 and the top surface of the second lower guide rail 22 is slightly larger than the outer diameter of the roller 35, so the second upper guide rail 23 and the second lower guide rail 22 usually do not contact the roller 35 at the same time. When no conveyor trolley 10 passes by, the roller chain naturally droops due to gravity, and the roller 35 contacts the top surface of the second lower guide rail 22. When the conveyor trolley 10 passes by, due to the lifting action of the lifting rod 12, the roller 35 contacts the bottom surface of the second upper guide rail 23. However, no matter which guide rail contacts the roller 35, it is all rolling friction). Compared with the sliding friction between ordinary chains and guide rails, it can effectively reduce the friction between the conveyor chain 30 and the guide rails and reduce wear. At this time, as Figure 12 As shown, the bottom of the second upper guide rail 23 should extend between the two oppositely arranged inner chain plates 311, and the top of the second lower guide rail 22 should extend between the two oppositely arranged inner chain plates 311, so as to avoid each guide rail from touching the inner chain plates 311 on both sides and affecting normal operation. In addition, for the first type mentioned above (i.e., the conveyor chain 30 is a single-row chain), the conveyor chain 30 can also be a roller chain, so that when the roller 35 contacts the bottom surface of the first upper guide rail 26, it is a rolling friction, so as to reduce the friction force. Furthermore, the specific installation method of the second chain friction element 52 is as follows: Figure 8 As shown: The front and rear ends of the second chain friction member 52 are connected to the two adjacent chain links 31 respectively. At this time, the first pin 32 (whose structure is the same as the existing conventional pin) is lengthened to form the second pin 34. The second pin 34 passes through the outer chain plate hole 331 and sleeve 312 on the left conveyor chain 30 in sequence, then through the connecting hole 522 opened on the second chain friction member 52, and then through the outer chain plate hole 331 and sleeve 312 on the right conveyor chain 30, thereby connecting the conveyor chains 30 on both sides to the second chain friction member 52. In this method, only the first pin 32 needs to be lengthened. The assembly method is almost the same as the existing chain assembly method. There is no need to introduce other connecting parts, which simplifies the overall structure, reduces processing and assembly costs, and ensures connection strength. Meanwhile, it is also possible to achieve the preset function by opening only one connection hole 522 on each second chain friction component 52. However, in this case, the second chain friction component 52 is in a single-axis suspended state, which is not stable enough under vibration and external force. It may swing around the second pin 34, or even fail to make normal contact with the roof friction component 13. Therefore, if Figure 8 As shown, two connecting holes 522 should be opened on the upper part of each second chain friction member 52. The distance between the two connecting holes 522 is equal to the distance between the two outer chain plate holes 331 on the outer chain plate 33. Furthermore, the two connecting holes 522 should be symmetrically arranged so that the second chain friction member 52 is subjected to balanced force and ensures that it runs more smoothly. Furthermore, when the thickness of the chain friction component 50 is large, for example... Figure 8 The second chain friction element 52 shown only has friction on its bottom surface, therefore a weight-reducing hole 521 can be formed in its middle to reduce the overall weight. The weight-reducing hole 521 can be of various shapes, but a preferred shape is... Figure 8The square hole shape shown makes processing easier and allows for the removal of as much unwanted material as possible, resulting in more thorough weight reduction. The second chain friction element 52 is not symmetrical about the second pin 34, because the part above the second pin 34 does not contribute to providing friction for the conveyor trolley 10. Therefore, the main body of the second chain friction element 52 should be located below the connecting hole 522, and the part below the connecting hole 522 is used to contact the roof friction element 13. Thus, the weight reduction hole 521 is opened below the connecting hole 522, and the two connecting holes 522 are symmetrically distributed on both sides of the weight reduction hole 521 as much as possible to maintain the balance of the second chain friction element 52 to the greatest extent. In addition to achieving lightweight design, the 521 weight-reducing holes also help dissipate heat, preventing premature aging of the material due to the accumulation of heat generated by friction. Furthermore, the roof friction element 13 can be of various shapes, as long as its top can contact the chain friction element 50 to achieve transmission. However, in order to maintain stable and efficient operation, such as Figure 2 , Figure 7 As shown, the roof friction component 13 is preferably a block structure, more preferably a rectangular block structure, and should have a relatively flat shape. This results in a smaller height dimension, making it more stable when pulled by friction. Otherwise, if it is tall and thin, it is prone to generating a large overturning moment on the bottom surface of the roof friction component 13, causing it to tip over or loosen, and easily leading to breakage in the middle. Correspondingly, its length dimension is relatively long, and its width dimension is slightly shorter than its length dimension, ensuring more contact between the roof friction component 13 and the chain friction component 50 in the running direction, thus ensuring stability. In one specific embodiment, the length, width, and height dimensions of the roof friction component 13 are 145mm × 90mm × 44mm, respectively. Furthermore, both the roof friction component 13 and the chain friction component 50 are preferably made of non-metallic materials, such as rubber, nylon, or ultra-high molecular weight materials. Furthermore, to make the transmission smoother, such as Figure 2 , Figure 9 As shown, the top surface of the roof friction component 13 and the bottom surface of the chain friction component 50 are both flat. If needed, textures can also be designed on the contact surfaces to enhance friction. Furthermore, such as Figure 2 As shown, each conveyor trolley 10 is equipped with two roof friction components 13, which are arranged one in front of the other to ensure that the conveyor trolley 10 can run stably during operation. The two roof friction components 13 serve as backups for each other, so that even if one of them fails, the conveyor trolley 10 can still maintain operation with basic friction. Furthermore, such as Figure 7As shown, in order to ensure more reasonable force distribution and easier disassembly and maintenance, the lifting rod 12 is not directly connected to the roof friction component 13. Instead, two lifting rods 12 are used as a group, and a support plate 14 is first set on their top. Then, the cover-shaped roof friction component 13 is detachably connected to the support plate 14 (e.g., by bolt connection). That is, during maintenance, it is not necessary to remove the connection between the support plate 14 and a group of lifting rods 12. Only the roof friction component 13 needs to be removed. like Figure 7 As shown, for ease of installation, four grooves are formed at the four corners of the roof friction component 13. Each groove has a threaded hole at its bottom for the bolt to pass through, meaning the roof friction component 13 is a rectangular block structure with its four corners cut out. This design facilitates wrench operation during installation, especially using a socket wrench to tighten the nuts by inserting it into the groove from top to bottom. Furthermore, this design lowers the position of the connecting bolts, resulting in a smaller overturning moment in the direction of movement when subjected to friction from the roof friction component 13, leading to greater stability and a reduced bolt length, thus reducing costs. Furthermore, such as Figure 7 As shown, the pallet 14 has a through hole 141, and the top of the lifting rod 12 has a rod end neck 121. The rod end neck 121 passes through the through hole 141, and there is a preset radial gap between the rod end neck 121 and the through hole 141. This design allows the rod end neck 121 to move appropriately within the through hole 141, so that the posture of the pallet 14 can be adjusted slightly to compensate for the dimensional errors generated during processing and assembly, and to ensure that the roof friction component 13 can be stably fitted with the chain friction component 50. In the above detailed description, various features are combined together in a single embodiment to simplify this disclosure. This approach to disclosure should not be construed as reflecting an intention that embodiments of the claimed subject matter require more features than are explicitly stated in each claim. Rather, as reflected in the appended claims, the invention is presented with fewer features than all of the features of the single disclosed embodiment. Therefore, the appended claims are hereby explicitly incorporated into the detailed description, wherein each claim stands alone as a preferred embodiment of the invention. The disclosed embodiments have been described above to enable any person skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit and scope of this disclosure. Therefore, this disclosure is not limited to the embodiments given herein, but is consistent with the broadest scope of the principles and novel features disclosed in this application. The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A chain friction conveyor device, characterized in that, include: The conveyor chain (30) and the conveyor trolley (10) are located below the conveyor chain (30). The conveyor trolley (10) includes a car body (11) and a roof friction member (13) disposed above the car body (11). The bottom of the conveyor chain (30) is also provided with a chain friction member (50) that forms static friction with the roof friction member (13).

2. The chain friction conveyor device as described in claim 1, characterized in that, The conveyor chain (30) is one piece, and the chain friction element (50) is the first chain friction element (51). Alternatively, the conveyor chain (30) may consist of two chains, and the chain friction element (50) may be a second chain friction element (52) connected to the two conveyor chains (30).

3. The chain friction conveyor device as described in claim 2, characterized in that, The bottom of the conveyor chain (30) is connected to a connecting plate (313) that extends outward, and the first chain friction member (51) is connected to the bottom of the connecting plate (313) in a detachable or fixed manner.

4. The chain friction conveyor device as described in claim 3, characterized in that, The first chain friction member (51) is also connected to a support member (512) extending outward; a first upper guide rail (26) is provided above the conveyor chain (30), and a first lower guide rail (25) is provided below the support member (512).

5. The chain friction conveyor device as described in claim 2, characterized in that, The two conveyor chains (30) are arranged in parallel, and the second chain friction member (52) is sandwiched between the two conveyor chains (30). The second chain friction member (52) and the two conveyor chains (30) form a hamburger sandwich structure.

6. The chain friction conveyor device as described in claim 5, characterized in that, The two conveyor chains (30) and the second chain friction element (52) are connected together by a second pin (34).

7. The chain friction conveyor device as described in claim 5, characterized in that, Each of the conveyor chains (30) is provided with a second upper guide rail (23) above it and a second lower guide rail (22) below it.

8. The chain friction conveyor device as described in claim 7, characterized in that, The conveyor chain (30) is a roller chain with multiple rollers (35), and a rolling track for the rollers (35) is formed between the second upper guide rail (23) and the second lower guide rail (22); The bottom of the second upper guide rail (23) extends between two opposing inner chain plates (311), and the top of the second lower guide rail (22) extends between two opposing inner chain plates (311).

9. The chain friction conveyor device as described in claim 1, characterized in that, The roof friction component (13) is a block structure; among the dimensions of the roof friction component (13), the length dimension > the width dimension > the height dimension.

10. The chain friction conveyor device as described in claim 1, characterized in that, The top surface of the roof friction component (13) and the bottom surface of the chain friction component (50) are both flat.

11. The chain friction conveyor device as described in claim 1, characterized in that, Each of the conveying trolleys (10) is provided with two of the roof friction parts (13); the roof friction parts (13) are detachably connected to the pallet (14) located below them; a lifting rod (12) is connected above the vehicle body (11), and each pallet (14) is connected to two lifting rods (12) distributed in front and behind.

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