Jacking guardrail of chain conveyor

Abstract

The invention relates to the technical field of logistics conveyors, in particular to a jacking guardrail of a chain conveyor, which comprises a jacking assembly, a connecting assembly, a buffering assembly and a limiting assembly, the jacking assemblies are symmetrically installed on the two sides of the chain conveyor, the connecting assemblies are connected with the jacking assemblies, the buffering assemblies are connected with the jacking assemblies, and the limiting assemblies are connected with the buffering assemblies. The height of the guardrail and the passing width of goods can be freely adjusted through the jacking assembly and the connecting assembly, the buffering process is more stable and double buffering force can be provided through sliding of a gear and a rack in the opposite directions, the limiting assembly can rotate in the sliding process, X-shaped structure supporting is formed when the limiting assembly makes contact with the buffering assembly, and the buffering effect is improved. The buffering assembly can push the goods back after the impact force is relieved, so that the goods are put in storage in order; the problems that in the goods warehousing process, the height of a guardrail and the passing width of goods cannot be adjusted in real time according to warehousing goods, and therefore the goods collide with the guardrail, and the guardrail is deformed and damaged are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of logistics conveyors, and particularly relates to a lifting guardrail for a chain conveyor. Background Art

[0002] A chain conveyor is a continuous conveying device that uses a chain to transmit power and is currently widely used in industrial production and the logistics field; when the chain conveyor conveys materials, the conveying distance is usually relatively long, and the vibration generated during conveying will cause the conveyed materials to fall from both sides. Therefore, guardrails are usually provided on both sides of the chain conveyor to ensure the normal conveying of materials.

[0003] When used for item warehousing, due to the different sizes and shapes of the conveyed items, in order to ensure their stable conveying, it is necessary to stop the machine and manually adjust the position of the guardrail every time the product is changed. Most of the existing conveyor guardrails are customized special parts, and their installation positions and heights are fixed, which limits the adjustment range, and the structure is complex. The stability during installation and use is poor, and professional tools are required for adjustment, which takes a long time and has low work efficiency, and cannot meet the needs of modern production. The prior art has proposed good solutions to this problem. For example, a fast-adjustable conveyor guardrail with the patent publication number CN209160747U can arbitrarily adjust the position of the guardrail strip in both the horizontal and vertical directions through the design of the first long strip-shaped through hole and the second long strip-shaped through hole to adapt to the width and height dimensions of different conveyed items, which is flexible and adaptable to a wide range of conveyed items.

[0004] Although the prior art has solved the problem that the guardrail of a conventional chain conveyor cannot move freely to adapt to goods of different widths and heights, there are still the following problems: This adjustment method can only be adjusted before transportation and cannot quickly adjust the guardrail height and the width that the goods can pass through according to the changes of the goods during transportation. And when the goods are warehoused, it is usually necessary to ensure that the goods are regular, and the guardrail is needed to sort the goods so that the goods are neatly warehoused. When the goods to be warehoused change, there will be goods with a width greater than the distance between the guardrails on both sides or the goods will tilt and slide, which will impact the guardrail. When the guardrail is subjected to a large external force impact, it will be deformed or damaged, and the connection part between the guardrail and the conveyor will become loose and break under the vibration impact, thus affecting the stability of the conveying.

[0005] In view of the above situation, in order to overcome the above technical problems, the present invention designs a lifting guardrail for a chain conveyor. Summary of the Invention

[0006] The present invention provides a lifting guardrail for a chain conveyor, which solves the problem that the height of the guardrail and the width through which the goods can pass cannot be adjusted in a timely manner according to the goods being stored during the process of goods entering the warehouse, resulting in the goods hitting the guardrail and deforming and damaging the guardrail. By providing a lift assembly that can be adjusted in real time, and a connection assembly that can freely adjust the width of the lifting guardrail, the height and width of the lifting guardrail can be freely adjusted. A buffer assembly is provided to cooperate with the connection assembly to fixedly connect the two lift assemblies. When the goods impact one of the buffer assemblies, the two will slide in opposite directions through a gear and rack, making the buffering process smoother while providing double buffering force. During the sliding process, the limit assembly will rotate, and an X-shaped structure support will be formed when the limit assembly contacts the buffer assembly. The buffer assembly will push the goods back after the impact force is removed, enabling the goods to enter the warehouse neatly.

[0007] To achieve the above object, the present invention provides the following technical solutions: A lifting guardrail for a chain conveyor, used for a chain conveyor; includes a lift assembly, a connection assembly, a buffer assembly, and a limit assembly; the lift assemblies are symmetrically installed on both sides of the chain conveyor; the connection assembly is connected to the lift assembly; the buffer assembly is connected to the lift assembly. When the goods shift and squeeze the buffer assembly, the buffer assembly slides horizontally. When the buffer assembly on the lift assembly closer to the inner side of the chain conveyor slides, it drives the buffer assembly on the lift assembly on the outer side of the chain conveyor to slide in the opposite direction. When the impact force of the goods decreases, the buffer assembly will push the goods back and regularize them; the limit assembly is connected to the buffer assembly. When the buffer assembly slides, it drives the limit assembly to rotate and applies a force in the opposite direction to the sliding direction of the buffer assembly, thereby limiting the buffer assembly.

[0008] Preferably, the lift assembly includes a housing, a motor, a mounting plate, a transmission member, a transmission chain, and a lifting guardrail; the motor is installed at the lower part of the housing; the mounting plate is arranged at the upper part of the housing, and a limit sliding hole is opened on the mounting plate; the transmission member is arranged above the mounting plate; the transmission chain is connected to the output end of the motor and the transmission member; the lifting guardrail includes a guardrail body, a sliding shaft, and a sliding groove; the guardrail body is arranged above the mounting plate; the sliding shaft is arranged at the lower part of the guardrail body and is slidably installed in the limit sliding hole; the sliding groove is opened at the lower ends of both sides of the guardrail body.

[0009] In the above solution, through the design of the top component, the lifting guardrail can be freely adjusted in the vertical direction, and the adjustment can be quickly carried out by using the motor adjustment. Thus, when the transported goods change, the height can be quickly changed without manual adjustment. And in cooperation with the connection component, the passing width of the goods can be changed, so as to realize the sorting function; using the transmission chain for transmission can ensure operation in working environments with high temperature, heavy load and a large amount of dust. Compared with using hydraulic lifting, it is more suitable for harsh environments and has lower maintenance costs.

[0010] Preferably, the transmission part includes a support, a rotating shaft, a transmission bearing, a transmission gear, a transmission block and a rolling bearing; the support is installed at both ends of the upper side of the mounting plate; the rotating shaft is rotatably connected to the support; the transmission bearing is installed in the support and sleeved on the rotating shaft; the transmission gear is sleeved in the middle of the rotating shaft; the transmission block is connected to both ends of the rotating shaft; the rolling bearing is rotatably connected to the transmission block and installed in the sliding groove.

[0011] In the above solution, the motor drives the transmission gear to rotate through the transmission chain. The transmission gear drives the rotating shaft to rotate. When the transmission gear rotates, it drives the transmission block to rotate. When the transmission block rotates, it will drive the guardrail body to perform a lifting movement in the vertical direction through the sliding movement of the rolling bearing in the sliding groove. And due to the limiting effect between the sliding shaft and the limiting sliding hole, the guardrail body can only move in the vertical direction, and at the same time, it can play a role in limiting and supporting the buffer component.

[0012] Preferably, the connection component includes a mounting rail groove and a connection guide rail; the mounting rail groove is opened on the right side of the housing; the connection guide rail is arranged on the left side of the housing, and the connection guide rail is matched with the mounting rail groove.

[0013] In the above solution, through the cooperation between the mounting rail groove and the connection guide rail, the conveying length and the conveying width can be freely adjusted. By freely splicing multiple sets of lifting components, the passing width of the goods can be changed, and it can be realized through multiple sets of lifting guardrails. The lifting guardrails on the front section of the conveying route prevent the goods from falling from both sides of the conveyor. When the goods continue to be conveyed, since the distance between the lifting guardrails on both sides of the front section of the route is smaller than the distance between the lifting guardrails on the rear section of the route, the sorting effect on the goods can be realized, and the goods can be gradually arranged neatly, thereby reducing the probability of the goods hitting the lifting guardrails and preventing damage to the lifting guardrails.

[0014] Preferably, the buffer assembly includes a buffer slideway, a buffer plate, a buffer spring, a buffer connecting plate, a rack chute, a first rack, a second rack, a buffer gear and a connecting rod; the buffer slideway is formed on the guardrail body; the buffer plate is slidably mounted on the buffer slideway; the buffer spring is connected between the buffer plate and the guardrail body; the buffer connecting plate is mounted on the housing; the rack chutes are symmetrically formed on both sides of the buffer connecting plate; the first rack and the second rack are respectively slidably mounted in the rack chutes on both sides of the buffer connecting plate; the buffer gear is meshingly mounted between the first rack and the second rack; two connecting rods are provided, one is connected between the first rack and the inner buffer plate, and the other is connected between the second rack and the outer buffer plate.

[0015] In the above solution, when the goods impact the buffer plate, the buffer plate will slide and compress the buffer spring. The buffer sliding of the buffer plate can avoid the damage caused by the impact of the goods; and when the inner buffer plate is impacted and undergoes buffer sliding, the first rack will slide, and the first rack will drive the buffer gear to rotate. When the buffer gear rotates, it will drive the second rack to slide in the opposite direction to the first rack to pull the outer buffer plate. At this time, the buffer spring connected to the inner buffer plate will be compressed, and the buffer spring connected to the outer buffer plate will be stretched, so that the elastic forces of the two groups of buffer springs can simultaneously achieve buffering and provide a reaction force, enhancing the buffering effect.

[0016] Preferably, the connecting rod is of a telescopic structure; a rubber layer is provided on the surface of the buffer plate.

[0017] In the above solution, the telescopic structure of the connecting rod can meet the requirement that when the buffer plate moves vertically together with the guardrail body, the connecting rod can be stretched, and when the inner buffer plate is impacted and undergoes a horizontal sliding movement, the connecting rod and the first rack still maintain a connection relationship. Through the connection of the connecting rod, the buffer plate drives the first rack to move in the same direction, and the outer buffer plate will drive the second rack to move in the same direction through the connection between the connecting rod and the second rack; the rubber layer on the surface of the buffer plate can avoid damage to the surface of the buffer plate by the goods.

[0018] Preferably, the limiting assembly includes a first limiting rotating plate, a second limiting rotating plate, a limiting rod and a support member; the first limiting rotating plate is connected to the buffer gear; the second limiting rotating plate is rotatably mounted above the first limiting rotating plate; the limiting rod is connected to the lower end of the buffer plate; the support member is connected between the first limiting rotating plate and the second limiting rotating plate.

[0019] In the above solution, during the buffering process, the buffering gear will rotate, and the first limiting rotating plate connected to the buffering gear will rotate together with the buffering gear. Since the movement direction of the first rack is the same as that of the inner buffering plate, and the movement direction of the second rack is the same as that of the outer buffering plate, when the first rack moves outward, looking from the top view, the buffering gear rotates counterclockwise, driving the first limiting rotating plate to rotate counterclockwise. At this time, the limiting rod on the inner buffering plate moves inward together with the buffering plate. When the movement reaches the point where the limiting rod contacts the first limiting rotating plate, since the movement directions of the limiting rod and the first limiting rotating plate are opposite, a limiting effect will be generated between the two at this time, thereby preventing the buffering plate from further moving; and during this process, the second limiting rotating plate will move in the opposite direction to the first limiting rotating plate under the thrust of the support member. At this time, the second limiting rotating plate will generate a reaction thrust on the connecting rod, thereby preventing the buffering plate from continuing to move, and an X-shaped support structure is formed between the first limiting rotating plate and the second limiting rotating plate, which will enhance the support effect on the buffering plate and prevent the lifting guardrail from being damaged due to the impact of goods.

[0020] Preferably, the support member includes a fixed rod seat, a hinged sliding sleeve, and a support rotating rod; the fixed rod seat is arranged between the first limiting rotating plate and the second limiting rotating plate; two hinged sliding sleeves are provided, symmetrically slidably mounted on the fixed rod seat with respect to the center of the buffering gear; two groups of support rotating rods are symmetrically arranged with respect to the center of the buffering gear, with two in each group. One is connected between the first limiting rotating plate and the hinged sliding sleeve, and the other is connected between the second limiting rotating plate and the hinged sliding sleeve.

[0021] In the above solution, when the first limiting rotating plate rotates with the buffering gear, it will push the hinged sliding sleeve to slide on the fixed rod seat through the support rotating rod, and when the hinged sliding sleeve slides, it will drive another support rotating rod symmetrically arranged about the axis of the fixed rod seat to push the second limiting rotating plate to rotate in the opposite direction to the first limiting rotating plate. At this time, the second limiting rotating plate and the first limiting rotating plate will form an X-shaped structure, and the thrust directions generated by both are opposite to the movement direction of the buffering plate, thereby forming a limiting and supporting effect. At the same time of the X-shaped structure support, a triangular support is formed for the first limiting rotating plate and the second limiting rotating plate through the support rotating rod, making the overall support structure more stable.

[0022] Compared with the prior art, the beneficial effects of the present invention are: 1. Compared with the existing guardrails of chain conveyors, the present invention can freely adjust the height of the lifting guardrail during the cargo transportation process, and can adjust the width of the cargo passage by combining, so as to achieve the purpose of sorting the cargo. Moreover, the lifting assembly is realized by chain drive, which can ensure its use under harsh working conditions and when transporting heavy goods, reducing the maintenance cost. At the same time, the present invention is provided with a buffer assembly, which forms a more stable supporting force through the connection between two lifting assemblies. When one of the buffer plates is impacted, the buffer gear can drive the buffer plate on the other lifting assembly to move in the opposite direction. During this process, the buffer process can be made more stable through the first rack, the second rack and the buffer gear, and two groups of buffer springs connected to the two buffer plates can be made such that one group undergoes a compression movement and the other group undergoes a stretching movement, thereby obtaining a greater buffer force to protect the lifting guardrail, and after the impact force is removed, the cargo can be pushed back, so that the cargo can be stored in the warehouse more neatly.

[0023] 2. By providing a smooth rubber layer on the surface of the buffer plate, the present invention can further improve the protection effect, avoiding the concave damage to the surface of the buffer plate caused by the collision of the cargo. At the same time, the elastic modulus of the spring is set to gradually increase along its axial direction. On the one hand, during the buffer process, the buffer force can be gradually increased, thereby improving the buffer effect and protecting the buffer plate and the lifting assembly. On the other hand, when the size of the cargo is slightly larger than the distance between the opposite buffer plates, the buffer plate can be adaptively adjusted to make it adapt to the width change of the cargo. For the cargo with a width meeting the size requirements, a smaller clamping force can be provided, and this clamping force is less than the frictional force between the conveyor and the cargo, which can ensure that the cargo is regularized by the clamping force and thus stored in the warehouse smoothly. When the size of the cargo exceeds the allowable passing range, the clamping force gradually increases with the compression process of the buffer spring, making the cargo unable to move further, thereby realizing the screening and sorting effect of the cargo.

[0024] 3. By providing a limiting assembly, when the buffer gear rotates, it will drive the first limiting rotating plate to rotate, and when the first limiting rotating plate rotates, it will drive the second limiting rotating plate to rotate in the opposite direction through the support member. The second limiting rotating plate and the first limiting rotating plate will form an X-shaped structure, and the thrust directions generated by both are opposite to the movement direction of the buffer plate, thereby forming a limiting and supporting effect. At the same time, when the X-shaped structure provides support, a triangular support is formed for the first limiting rotating plate and the second limiting rotating plate through the support rotating rod, making the overall support structure more stable and preventing damage to the lifting guardrail. Description of the Drawings

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 is the overall structure diagram of the present invention; Figure 2 is the side view of the jacking component of the present invention; Figure 3 is the schematic diagram of the internal structure of the jacking component of the present invention; Figure 4 is the schematic diagram of the connection component structure of the present invention; Figure 5 is the schematic diagram of the buffer component structure of the present invention; Figure 6 is the schematic diagram of the buffer plate connection structure of the present invention; Figure 7 is the schematic diagram of the limit component structure of the present invention; Figure 8 is the movement trend diagram of the buffer component and the limit component of the present invention; In the figure: 1. Jacking component; 11. Housing; 12. Motor; 13. Mounting plate; 131. Limit sliding hole; 14. Transmission member; 141. Support; 142. Rotating shaft; 143. Transmission bearing; 144. Transmission gear; 145. Transmission block; 146. Rolling bearing; 15. Transmission chain; 16. Lifting guardrail; 161. Guardrail body; 162. Sliding shaft; 163. Sliding groove; 2. Connection component; 21. Mounting rail groove; 22. Connection guide rail; 3. Buffer component; 31. Buffer slideway; 32. Buffer plate; 321. Rubber layer; 33. Buffer spring; 34. Buffer connecting plate; 35. Rack chute; 36. Rack one; 37. Rack two; 38. Buffer gear; 39. Connecting rod; 4. Limit component; 41. Limit rotating plate one; 42. Limit rotating plate two; 43. Limit rod; 44. Support member; 441. Fixed rod seat; 442. Hinge sliding sleeve; 443. Support rotating rod; a. Chain conveyor. Specific Embodiments

[0027] To better understand the above technical solutions, the following will detail the above technical solutions in combination with the accompanying drawings of the specification and specific embodiments.

[0028] Please refer to Figures 1 to 8 , the present invention provides a jacking guardrail for a chain conveyor, and the technical solution is as follows: As a specific embodiment of the present invention, referring toFigure 1 , Figure 2 and Figure 8 , a lifting guardrail for a chain conveyor, for the chain conveyor a; comprising a lifting assembly 1, a connecting assembly 2, a buffer assembly 3 and a limiting assembly 4; the lifting assembly 1 is symmetrically installed on both sides of the chain conveyor a; the connecting assembly 2 is connected to the lifting assembly 1; the buffer assembly 3 is connected to the lifting assembly 1, and when the goods shift and squeeze the buffer assembly 3, the buffer assembly 3 slides horizontally, and when the buffer assembly 3 on the inner side of the lifting assembly 1 near the chain conveyor a slides, it drives the buffer assembly 3 on the outer side of the lifting assembly 1 of the chain conveyor a to slide in the opposite direction; the limiting assembly 4 is connected to the buffer assembly 3, and when the buffer assembly 3 slides, it drives the limiting assembly 4 to rotate and applies a force to the buffer assembly 3 in the direction opposite to the sliding direction of the buffer assembly 3.

[0029] As a specific embodiment of the present invention, referring to Figure 1 , Figure 2 and Figure 3 , the lifting assembly 1 includes a housing 11, a motor 12, a mounting plate 13, a transmission member 14, a transmission chain 15 and a lifting guardrail 16; the motor 12 is installed at the lower part of the housing 11; the mounting plate 13 is arranged at the upper part of the housing 11, and a limiting sliding hole 131 is opened on the mounting plate 13; the transmission member 14 is arranged above the mounting plate 13; the transmission chain 15 is connected to the output end of the motor 12 and the transmission member 14; the lifting guardrail 16 includes a guardrail body 161, a sliding shaft 162 and a sliding groove 163; the guardrail body 161 is arranged above the mounting plate 13; the sliding shaft 162 is arranged at the lower part of the guardrail body 161 and is slidably installed in the limiting sliding hole 131; the sliding groove 163 is opened at the lower ends of both sides of the guardrail body 161. Through the design of the top-setting assembly, the lifting guardrail 16 can be freely adjusted in the vertical direction, and the adjustment can be quickly carried out by using the motor 12, so as to ensure that the height can be quickly changed when the transported goods change without manual adjustment, and the width of the goods passing through can be changed in cooperation with the connecting assembly 2, so as to realize the sorting function; using the transmission chain 15 for transmission can ensure that it can work in a working environment with high temperature, heavy load and a lot of dust. Compared with using hydraulic lifting, it is more suitable for harsh environments and has lower maintenance costs.

[0030] As a specific embodiment of the present invention, referring to Figure 3, the transmission member 14 includes a support 141, a rotating shaft 142, a transmission bearing 143, a transmission gear 144, a transmission block 145, and a rolling bearing 146; the support 141 is installed at both ends of the upper side of the mounting plate 13; the rotating shaft 142 is rotatably connected to the support 141; the transmission bearing 143 is installed in the support 141 and sleeved on the rotating shaft 142; the transmission gear 144 is sleeved on the middle of the rotating shaft 142; the transmission block 145 is connected to both ends of the rotating shaft 142; the rolling bearing 146 is rotatably connected to the transmission block 145 and installed in the sliding groove 163. The motor 12 drives the transmission gear 144 to rotate through the transmission chain 15. The transmission gear 144 drives the rotating shaft 142 to rotate. When the transmission gear 144 rotates, it drives the transmission block 145 to rotate. When the transmission block 145 rotates, it will drive the guardrail body 161 to perform a jacking movement in the vertical direction through the sliding movement of the rolling bearing 146 in the sliding groove 163. And due to the limiting effect between the sliding shaft 162 and the limiting sliding hole 131, the guardrail body 161 can only move in the vertical direction, and at the same time, it can play a role in limiting and supporting the buffer assembly 3.

[0031] As a specific embodiment of the present invention, refer to Figure 4 , the connection assembly 2 includes a mounting rail groove 21 and a connection guide rail 22; the mounting rail groove 21 is opened on the right side of the housing 11; the connection guide rail 22 is arranged on the left side of the housing 11, and the connection guide rail 22 is matched with the mounting rail groove 21. Through the cooperation between the mounting rail groove 21 and the connection guide rail 22, the conveying length and width can be freely adjusted. By freely splicing multiple sets of lifting assemblies 1, the passing width of the goods can be changed, and this can be achieved through multiple sets of lifting guardrails 16. The lifting guardrails 16 on the front conveying route prevent the goods from falling from both sides of the conveyor. When the goods continue to be conveyed, since the distance between the lifting guardrails 16 on both sides of the front route is less than the distance between the lifting guardrails 16 on the rear route, the sorting effect on the goods can be achieved, and the goods can be gradually arranged neatly, thereby reducing the probability of the goods hitting the lifting guardrail 16 and preventing damage to the lifting guardrail 16.

[0032] As a specific embodiment of the present invention, refer to Figure 5 , Figure 6 and Figure 7, the buffer assembly 3 includes a buffer slideway 31, a buffer plate 32, a buffer spring 33, a buffer connecting plate 34, a rack chute 35, a first rack 36, a second rack 37, a buffer gear 38 and a connecting rod 39; the buffer slideway 31 is opened on the guardrail body 161; the buffer plate 32 is slidably installed on the buffer slideway 31; the buffer spring 33 is connected between the buffer plate 32 and the guardrail body 161; the buffer connecting plate 34 is installed on the housing 11; the rack chutes 35 are symmetrically opened on both sides of the buffer connecting plate 34; the first rack 36 and the second rack 37 are respectively slidably installed in the rack chutes 35 on both sides of the buffer connecting plate 34; the buffer gear 38 is meshingly installed between the first rack 36 and the second rack 37; two connecting rods 39 are provided in total, one is connected between the first rack 36 and the inner buffer plate 32, and the other is connected between the second rack 37 and the outer buffer plate 32. When the goods impact the buffer plate 32, the buffer plate 32 will slide and compress the buffer spring 33, and the buffer sliding of the buffer plate 32 can avoid the damage caused by the impact of the goods; and when the inner buffer plate 32 is impacted and undergoes buffer sliding, the first rack 36 will slide, and the first rack 36 will drive the buffer gear 38 to rotate. When the buffer gear 38 rotates, it drives the second rack 37 to slide in the opposite direction to the first rack 36 to pull the outer buffer plate 32. At this time, the buffer spring 33 connected to the inner buffer plate 32 will be compressed, and the buffer spring 33 connected to the outer buffer plate 32 will be stretched, so that the elastic forces of the two groups of buffer springs 33 can simultaneously achieve buffering and provide a reaction force, enhancing the buffering effect.

[0033] As a specific implementation manner of the present invention, refer to Figure 5 , Figure 6 , Figure 7 and Figure 8, the connecting rod 39 is a telescopic structure; a rubber layer 321 with a smooth surface is provided on the surface of the buffer plate 32, and the buffer plate 32 is made of 45 steel. Since the storage route is relatively long, a chain conveyor a is used for transportation. At this time, the thickness of the buffer plate cannot be set too thick. By increasing the thickness to prevent deformation, for every 1 mm increase, more materials are required, and the cost is high. At the same time, due to its long length, it is more likely to deform under impact force; the elastic modulus of the buffer spring 33 gradually increases along its axis. The telescopic structure of the connecting rod 39 can meet the requirement that when the buffer plate 32 moves vertically together with the guardrail body 161, the connecting rod 39 can be stretched, and when the inner buffer plate 32 is impacted and slides horizontally, the connecting rod 39 and the first rack 36 still maintain a connection relationship. Through the connection of the connecting rod 39, the buffer plate 32 drives the first rack 36 to move in the same direction, and the outer buffer plate 32 will drive the second rack 37 to move in the same direction through the connection between the connecting rod 39 and the second rack 37; the rubber layer 321 on the surface of the buffer plate 32 can prevent the surface of the buffer plate 32 from being damaged by the goods; on the one hand, the fact that the elastic modulus of the buffer spring 33 gradually increases along its axis can make the buffer force gradually increase during the buffering process, thereby improving the buffering effect and protecting the buffer plate 32 and the lifting assembly 1. On the other hand, when the size of the goods is slightly larger than the distance between the opposing buffer plates 32, the buffer plates 32 can be adjusted adaptively so that they can adapt to the width change of the goods. For goods with a width meeting the size requirements, a smaller clamping force can be provided, and this clamping force is less than the friction force between the chain conveyor a and the goods, which can ensure that the goods are regularized by the clamping force and thus smoothly enter the warehouse. When the size of the goods exceeds the allowable passing range, the clamping force gradually increases with the compression process of the buffer spring 33, making the goods unable to move further, thereby achieving the screening and sorting effect of the goods.

[0034] As a specific embodiment of the present invention, referring to Figure 5 , Figure 6 , Figure 7 and Figure 8, the limiting component 4 includes a first limiting rotating plate 41, a second limiting rotating plate 42, a limiting rod 43 and a support member 44; the first limiting rotating plate 41 is connected to the buffer gear 38; the second limiting rotating plate 42 is rotatably installed above the first limiting rotating plate 41; the limiting rod 43 is connected to the lower end of the buffer plate 32; the support member 44 is connected between the first limiting rotating plate 41 and the second limiting rotating plate 42. During the buffering process, the buffer gear 38 will rotate, and the first limiting rotating plate 41 connected to the buffer gear 38 will rotate together with the buffer gear 38. Since the movement direction of the first rack 36 is the same as that of the inner buffer plate 32, and the movement direction of the second rack 37 is the same as that of the outer buffer plate 32, when the first rack 36 moves outward, looking from the top view, the buffer gear 38 rotates counterclockwise, driving the first limiting rotating plate 41 to rotate counterclockwise. At this time, the limiting rod 43 on the inner buffer plate 32 moves inward together with the buffer plate 32. When the movement reaches the contact between the limiting rod 43 and the first limiting rotating plate 41, since the movement directions of the limiting rod 43 and the first limiting rotating plate 41 are opposite directions, a limiting effect will be generated between the two at this time, thereby preventing the buffer plate 32 from further moving; and during this process, the second limiting rotating plate 42 will move in the opposite direction to the first limiting rotating plate 41 under the thrust of the support member 44. At this time, the second limiting rotating plate 42 will generate a counter-thrust on the connecting rod 39, thereby preventing the buffer plate 32 from continuing to move. Moreover, an X-shaped support structure is formed between the first limiting rotating plate 41 and the second limiting rotating plate 42, which will enhance the support effect on the buffer plate 32 and prevent damage to the lifting guardrail 16 caused by the impact of goods.

[0035] As a specific embodiment of the present invention, refer to Figure 5 , Figure 6 , Figure 7 and Figure 8, the support member 44 includes a fixed rod base 441, a hinged sliding sleeve 442, and a support rotating rod 443; the fixed rod base 441 is arranged between the first limiting rotating plate 41 and the second limiting rotating plate 42, and both ends of the fixed rod base 441 are fixedly connected to the buffer connecting plate 34. Moreover, the length of the line connecting the two end points of the fixed rod base 441 is longer than the lengths of the first limiting rotating plate 41 and the second limiting rotating plate 42, ensuring that when rotating to a state where the axes of the first limiting rotating plate 41, the second limiting rotating plate 42, and the fixed rod base 441 are in the same vertical plane, the connection positions at both ends of the fixed rod base 441 will not cause jamming; two hinged sliding sleeves 442 are provided in total, symmetrically slidingly mounted on the fixed rod base 441 with respect to the center of the buffer gear 38; two groups of support rotating rods 443 are symmetrically arranged with respect to the center of the buffer gear 38, with two rods in each group. One of them is connected between the first limiting rotating plate 41 and the hinged sliding sleeve 442, and the other is connected between the second limiting rotating plate 42 and the hinged sliding sleeve 442. When the first limiting rotating plate 41 rotates with the buffer gear 38, it will push the hinged sliding sleeve 442 to slide on the fixed rod base 441 through the support rotating rod 443. When the hinged sliding sleeve 442 slides, it will drive another support rotating rod 443 symmetrically arranged with respect to the axis of the fixed rod base 441 to push the second limiting rotating plate 42 to rotate in the opposite direction to the first limiting rotating plate 41. At this time, the second limiting rotating plate 42 and the first limiting rotating plate 41 will form an X-shaped structure, and the thrust directions generated by both of them are opposite to the movement direction of the buffer plate 32, thus forming a limiting and supporting effect. Moreover, while the X-shaped structure provides support, a triangular support is formed for the first limiting rotating plate 41 and the second limiting rotating plate 42 through the support rotating rod 443, making the overall support structure more stable.

[0036] Workflow: Place two jacking assemblies 1 on both sides of the chain conveyor a, connect the two jacking assemblies 1 on the same side through the connecting assembly 2, and place the goods on the chain conveyor a; according to the size of the passing goods, start the motor 12 to raise the lifting guardrail 16, and then start the chain conveyor a for transportation; when the goods tilt and hit the buffer plate 32, the buffer plate 32 compresses the buffer spring 33 for buffering, and the limiting assembly 4 rotates to limit the buffer plate 32.

[0037] Specifically, if it is necessary to raise the lifting guardrail 16 close to the chain conveyor a, start the motor 12. The motor 12 drives the transmission gear 144 to rotate through the transmission chain 15. The transmission gear 144 drives the rotating shaft 142 to rotate. When the transmission gear 144 rotates, it drives the transmission block 145 to rotate. When the transmission block 145 rotates, it will drive the guardrail body 161 to perform a vertical jacking movement through the sliding movement of the rolling bearing 146 in the sliding groove 163, thus realizing the lifting movement of the lifting guardrail 16. And during this process, the connecting rod 19 will perform a telescopic movement to maintain the connection between the first rack 36 and the inner buffer plate 32. When the goods are dumped or offset and impact the inner buffer plate 32, the inner buffer plate 32 will slide and compress the buffer spring 33. The buffer sliding of the buffer plate 32 can avoid damage caused by the impact of the goods. When the inner buffer plate 32 is impacted and undergoes buffer sliding, it will drive the first rack 36 to slide together. The first rack 36 will drive the buffer gear 38 to rotate. The rotation of the buffer gear 38 drives the rack to slide in the opposite direction to the first rack 36 to pull the outer buffer plate 32. At this time, the buffer spring 33 connected to the inner buffer plate 32 will be compressed, and the buffer spring 33 connected to the outer buffer plate 32 will be stretched, enabling the elastic forces of the two sets of buffer springs 33 to achieve buffering and provide a reaction force simultaneously, further enhancing the buffering effect. During the buffering process, the buffer gear 38 rotates, and the limit rotating plate 41 connected to the buffer gear 38 will rotate together with the buffer gear 38. Since the movement direction of the first rack 36 is the same as that of the inner buffer plate 32, and the movement direction of the second rack 37 is the same as that of the outer buffer plate 32. When the first rack 36 moves outward, looking from the top view, the buffer gear 38 rotates counterclockwise, driving the limit rotating plate 41 to rotate counterclockwise. At this time, the limit rod 43 on the inner buffer plate 32 moves inward together with the buffer plate 32. When it moves to contact the limit rotating plate 41, since the movement directions of the limit rod 43 and the limit rotating plate 41 are opposite, a limiting effect will be generated between the two, thus preventing the buffer plate 32 from further moving. During this process, since the limit rotating plate 41 rotates with the buffer gear 38, at this time, the limit rotating plate 41 will push the articulated sliding sleeve 442 to slide on the fixed rod seat 441 through the support rod 443. When the articulated sliding sleeve 442 slides, it will drive another support rod 443 symmetric about the axis of the fixed rod seat 441 to push the limit rotating plate 42 to rotate in the opposite direction to the limit rotating plate 41. At this time, the limit rotating plate 42 will generate a reaction force on the connecting rod 39, thus preventing the buffer plate 32 from continuing to move. And an X-shaped support structure is formed between the limit rotating plate 41 and the limit rotating plate 42, which will enhance the support effect on the buffer plate 32. When the impact force generated by the goods is completely removed, under the elastic force of the buffer spring 33, it will push back and regularize the goods, enabling the goods to be stored smoothly and neatly. When the size of the goods is slightly larger than the distance between the opposite buffer plates 32, the buffer plates 32 can be adjusted adaptively to adapt to the width change of the goods. For goods with a width meeting the size requirements, a smaller clamping force can be provided, and this clamping force is less than the friction force between the chain conveyor a and the goods, which can ensure that the goods are regularized by the clamping force and thus stored smoothly. When the size of the goods exceeds the allowable passing range, the clamping force gradually increases with the compression process of the buffer spring 33, making the goods unable to move further, thus achieving the screening and sorting effect of the goods.

[0038] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A lifting guardrail for a chain conveyor, used for a chain conveyor (a); characterized in that: It includes a jacking assembly (1), a connecting assembly (2), a buffer assembly (3) and a limiting assembly (4); the jacking assembly (1) is symmetrically installed on both sides of the chain conveyor (a); the connecting assembly (2) is connected to the jacking assembly (1); the buffer assembly (3) is connected to the jacking assembly (1). When the goods shift and squeeze the buffer assembly (3), the buffer assembly (3) slides horizontally. When the buffer assembly (3) on the jacking assembly (1) near the inner side of the chain conveyor (a) slides, it drives the buffer assembly (3) on the jacking assembly (1) on the outer side of the chain conveyor (a) to slide in the opposite direction; the limiting assembly (4) is connected to the buffer assembly (3). When the buffer assembly (3) slides, it drives the limiting assembly (4) to rotate and applies a force opposite to the sliding direction of the buffer assembly (3) to the buffer assembly (3).

2. The lifting guardrail of a chain conveyor according to claim 1, characterized in that: The jacking assembly (1) includes a housing (11), a motor (12), a mounting plate (13), a transmission member (14), a transmission chain (15) and a lifting guardrail (16); the motor (12) is installed on the lower layer in the middle of the housing (11); the mounting plate (13) is arranged on the upper part of the housing (11), and a limiting sliding hole (131) is opened on the mounting plate (13); the transmission member (14) is arranged above the mounting plate (13); the transmission chain (15) is connected to the output end of the motor (12) and the transmission member (14); the lifting guardrail (16) includes a guardrail body (161), a sliding shaft (162) and a sliding groove (163); the guardrail body (161) is arranged above the mounting plate (13); the sliding shaft (162) is arranged at the lower part of the guardrail body (161) and is slidably installed in the limiting sliding hole (131); the sliding groove (163) is opened at the lower ends on both sides of the guardrail body (161).

3. The lifting guardrail of a chain conveyor according to claim 2, characterized in that: The transmission member (14) includes a support (141), a rotating shaft (142), a transmission bearing (143), a transmission gear (144), a transmission block (145) and a rolling bearing (146); the support (141) is installed at both ends on the upper side of the mounting plate (13); the rotating shaft (142) is rotatably connected to the support (141); the transmission bearing (143) is installed in the support (141) and sleeved on the rotating shaft (142); the transmission gear (144) is sleeved in the middle of the rotating shaft (142); the transmission block (145) is connected to both ends of the rotating shaft (142); the rolling bearing (146) is rotatably connected to the transmission block (145) and installed in the sliding groove (163).

4. The jacking guardrail of a chain conveyor according to claim 2, characterized in that: The connecting assembly (2) includes a mounting rail groove (21) and a connecting guide rail (22); the mounting rail groove (21) is opened on the right side of the housing (11); the connecting guide rail (22) is arranged on the left side of the housing (11), and the connecting guide rail (22) is matched with the mounting rail groove (21).

5. The lifting guardrail of a chain conveyor according to claim 2, characterized in that: The buffer assembly (3) includes a buffer slideway (31), a buffer plate (32), a buffer spring (33), a buffer connecting plate (34), a rack chute (35), a first rack (36), a second rack (37), a buffer gear (38) and a connecting rod (39); the buffer slideway (31) is opened on the guardrail body (161); the buffer plate (32) is slidably installed on the buffer slideway (31); the buffer spring (33) is connected between the buffer plate (32) and the guardrail body (161); the buffer connecting plate (34) is installed on the housing (11); the rack chute (35) is symmetrically opened on both sides of the buffer connecting plate (34); the first rack (36) and the second rack (37) are respectively slidably installed in the rack chutes (35) on both sides of the buffer connecting plate (34); the buffer gear (38) is meshingly installed between the first rack (36) and the second rack (37); two connecting rods (39) are provided in total, one is connected between the first rack (36) and the inner buffer plate (32), and the other is connected between the second rack (37) and the outer buffer plate (32).

6. The lifting guardrail of a chain conveyor according to claim 5, characterized in that: The connecting rod (39) is a telescopic structure; a rubber layer (321) with a smooth surface is provided on the surface of the buffer plate (32); the elastic modulus of the buffer spring (33) gradually increases along the axis direction towards the guardrail body (161).

7. The lifting guardrail of a chain conveyor according to claim 5, wherein: The limiting assembly (4) includes a first limiting rotating plate (41), a second limiting rotating plate (42), a limiting rod (43) and a support member (44); the first limiting rotating plate (41) is connected to the buffer gear (38); the second limiting rotating plate (42) is rotatably installed above the first limiting rotating plate (41); the limiting rod (43) is connected to the lower end of the buffer plate (32); the support member (44) is connected between the first limiting rotating plate (41) and the second limiting rotating plate (42).

8. The lifting guardrail of a chain conveyor according to claim 7, characterized in that: The support member (44) includes a fixed rod seat (441), a hinged sliding sleeve (442) and a support rotating rod (443); the fixed rod seat (441) is arranged between the first limiting rotating plate (41) and the second limiting rotating plate (42); two hinged sliding sleeves (442) are provided in total, and are symmetrically slidably installed on the fixed rod seat (441) with respect to the center of the buffer gear (38); two groups of support rotating rods (443) are symmetrically arranged with respect to the center of the buffer gear (38), and each group has two, one of which is connected between the first limiting rotating plate (41) and the hinged sliding sleeve (442), and the other is connected between the second limiting rotating plate (42) and the hinged sliding sleeve (442).

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