Product transportation device and transportation line

Abstract

According to the product conveying device and the conveying line, the product conveying device comprises a lifting mechanism used for driving products to ascend and descend; the lifting mechanism comprises a motor assembly, a driving shaft, a lifting plate and a chain; the motor assembly is provided with a rotatable output shaft; the driving shaft is connected with the output shaft through the torsion limiter and is used for rotating along with the output shaft; the lifting plate is used for bearing products; the other end of the chain is connected with the lifting plate; the chain moves along with the driving shaft to drive the lifting plate to lift; wherein the torsion limiter is configured to be disconnected with the driving shaft or the output shaft under the condition that the resistance of the chain is greater than a torsion set value; in other words, when the chain is stuck and the load of the motor is increased to a certain value, the torsion limiter can play a role in slipping between the driving shaft and the output shaft so as to protect the device.

Description

Technical Field

[0001] The utility model relates to the technical field of product transportation, in particular to a product transportation device and a transportation line. Background Art

[0002] In the current industrial field, steel drum transport devices are widely used in various production, warehousing and logistics links, especially in the petroleum, chemical, food and other industries. As an important packaging and transportation tool, the transportation efficiency and safety of steel drums are of great importance. However, in actual operation, steel drum transport devices often face various challenges and potential problems.

[0003] During the transportation of steel drums, due to improper placement of steel drums, mismatched conveying speeds or unreasonable design of the transport path, steel drums are prone to collision and extrusion, causing the conveyor chain to be subjected to excessive pressure or even stuck. In addition, mechanical failures such as chain breakage and drive wheel damage will also directly affect the normal operation of the steel drum transport device.

[0004] When the conveyor chain is stuck, the lifting device often cannot work properly and is in an overloaded state. In this case, the motor, as the main power source of the lifting device, will be subjected to huge torque and load. A motor that is in an overloaded state for a long time will not only reduce its working efficiency and service life, but may also cause damage to the motor and even cause the entire steel drum transport device to shut down, seriously affecting production progress and economic benefits.

[0005] Therefore, there is an urgent need for a product transportation device and a transportation line that can solve the above problems. Utility Model Content

[0006] In order to overcome the above problems, the utility model provides a product transport device and a transport line, which solve the problem that the current product transport device is prone to chain jamming and motor overload.

[0007] In a first aspect, the present application provides a product transport device, including a lifting mechanism for driving the product to be lifted and lowered;

[0008] The lifting mechanism comprises:

[0009] a motor assembly having a rotatable output shaft;

[0010] A driving shaft connected to the output shaft through a torque limiter and configured to rotate along with the output shaft;

[0011] Lifting plate, used to carry products;

[0012] A chain, one end of which is meshed with the driving shaft and the other end of which is connected to the lifting plate; the chain is used to follow the movement of the driving shaft to drive the lifting plate to move up and down;

[0013] Wherein, the torque limiter is configured to be disconnected from the driving shaft or the output shaft when the chain resistance is greater than a torque setting value.

[0014] In some embodiments of the present application, the motor assembly includes:

[0015] A rotating motor, wherein the rotating motor has a rotating shaft, and a first transmission wheel is arranged on the rotating shaft;

[0016] An output shaft is provided with a second transmission wheel, and the first transmission wheel and the second transmission wheel are driven by a chain or a belt.

[0017] In some embodiments of the present application, the torque limiter includes:

[0018] A first fixed sleeve, sleeved on the driving shaft;

[0019] A second fixed sleeve, sleeved on the output shaft, the fixed sleeve comprising a first boss abutting against the first fixed sleeve and a second boss disposed away from the first fixed sleeve;

[0020] A fixing plate, arranged between the first boss and the second boss, and arranged close to the first boss;

[0021] A movable plate, disposed between the fixed plate and the second boss, and disposed close to the fixed plate;

[0022] A compression spring is arranged between the movable plate and the second boss to press the movable plate to abut against the fixed plate.

[0023] In some embodiments of the present application, the fixing plate is connected to the first fixing sleeve by bolts, and the fixing plate is configured to adjust the compression amount of the compression spring and the torque setting value by connecting the fixing plate and the first fixing sleeve by the bolts.

[0024] In some embodiments of the present application, the chain includes a first sub-chain and a second sub-chain; the first sub-chain is used to connect the first side of the lifting plate, and the second sub-chain is used to connect the second side of the lifting plate, and the second side and the second side are opposite sides of the lifting plate.

[0025] In some embodiments of the present application, the number of the first sub-chains is two, and they are connected to the first side portion at intervals;

[0026] And / or, the number of the second sub-chains is two, and they are connected to the second side portion at intervals.

[0027] In some embodiments of the present application, the product transport device further includes a feeding mechanism, which is disposed near the bottom or top of the lifting mechanism and is used to load or unload materials for the lifting mechanism; the feeding mechanism includes:

[0028] A telescopic cylinder having a telescopic end;

[0029] A limit assembly having a first position state and a second position state, wherein the telescopic cylinder is used to drive the limit assembly to switch between the first position state and the second position state;

[0030] The limit assembly is configured to limit the movement of the product in the feeding mechanism to the lifting mechanism when the limit assembly is in the first position; and is configured to release the restriction on the product when the limit assembly is in the second position.

[0031] In some embodiments of the present application, the position limiting assembly includes a first rod portion and a second rod portion arranged at a fixed angle, and a connection point between the first rod portion and the second rod portion is fixed;

[0032] The first rod portion is connected to the telescopic end, and a limiting wheel is provided at one end of the second rod portion away from the connection point; the telescopic end extends to push the first rod portion, and the second rod portion follows the movement of the first rod portion to move the limiting wheel away from the product; the telescopic end contracts and pulls the first rod portion, and the second rod portion follows the movement of the first rod portion to move the limiting wheel close to the product and block the product.

[0033] In some embodiments of the present application, there are two limit assemblies, which are disposed on both sides of the feeding route of the feeding mechanism.

[0034] In a second aspect, the present application also provides a transport line, comprising the above-mentioned product transport device.

[0035] The beneficial effects of the utility model are as follows: the utility model adopts a product transportation device and a transportation line, the product transportation device includes a lifting mechanism for driving the product to be lifted and lowered; the lifting mechanism includes a motor assembly, a driving shaft, a lifting plate and a chain; the motor assembly has a rotatable output shaft; the driving shaft is connected to the output shaft through a torque limiter and is used to rotate with the output shaft; the lifting plate is used to carry the product; one end of the chain is engaged with the driving shaft, and the other end is connected to the lifting plate; the chain is used to follow the movement of the driving shaft to drive the lifting plate to rise and fall; wherein the torque limiter is configured to disconnect the driving shaft or the output shaft when the chain resistance is greater than the torque setting value; that is, when the chain is stuck and the motor load increases to a certain value, the torque limiter can play a slipping role between the driving shaft and the output shaft to protect the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the structure of a product transport device provided by an embodiment of the utility model;

[0037] Figure 2 The utility model provides an embodiment of Figure 1 Schematic diagram of the local A enlarged structure;

[0038] Figure 3 A schematic diagram of the structure of a product transport device provided by another embodiment of the utility model;

[0039] Figure 4 A schematic diagram of the structure of a product transport device provided by another embodiment of the utility model;

[0040] Figure 5 This is a schematic structural diagram of a product transport device provided in yet another embodiment of the present utility model.

[0041] Specific element symbol description:

[0042] 100-lifting mechanism, 110-motor assembly, 111-rotating motor, 112-rotating shaft, 113-first transmission wheel, 114-output shaft, 115-second transmission wheel, 120-driving shaft, 130-torque limiter, 131-first fixed sleeve, 132-second fixed sleeve, 133-fixed plate, 134-movable plate, 135-compression spring, 140-chain, 141-first sub-chain, 142-second sub-chain, 150-lifting plate, 200-feeding mechanism, 210-telescopic cylinder, 211-telescopic end, 220-limiting assembly, 221-first rod, 222-second rod, 223-limiting wheel, 300-product, 1321-first boss, 1322-second boss. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. The following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0044] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance. In addition, terms such as "horizontal", "vertical", and "overhanging" do not require that the components are absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly tilted. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0045] In the current industrial field, steel drum transport devices are widely used in various production, warehousing and logistics links, especially in the petroleum, chemical, food and other industries. As an important packaging and transportation tool, the transportation efficiency and safety of steel drums are of great importance. However, in actual operation, steel drum transport devices often face various challenges and potential problems.

[0046] During the transportation of steel drums, due to improper placement of steel drums, mismatched conveying speeds or unreasonable design of the transport path, steel drums are prone to collision and extrusion, causing the conveyor chain to be subjected to excessive pressure or even stuck. In addition, mechanical failures such as chain breakage and drive wheel damage will also directly affect the normal operation of the steel drum transport device.

[0047] When the conveyor chain is stuck, the lifting device often cannot work properly and is in an overloaded state. In this case, the motor, as the main power source of the lifting device, will be subjected to huge torque and load. A motor that is in an overloaded state for a long time will not only reduce its working efficiency and service life, but may also cause damage to the motor and even cause the entire steel drum transport device to shut down, seriously affecting production progress and economic benefits.

[0048] Specifically, in the production process of the assembly line, the steel barrels need to be transported to the finished product warehouse after production is completed. The warehouses are divided into warehouses on the same floor and warehouses on the upper and lower floors. The warehouses on the same floor can be transported horizontally, while warehouses on the upper and lower floors often require lifting devices for transportation. The steel barrels are transported from the horizontal conveying device to the lifting device, and the lifting device transports the steel barrels upstairs or downstairs, and then transported horizontally to the designated location for storage. At present, most domestic lifting devices have the following deficiencies and shortcomings: due to the difference in the flow step and flow beat between the input end and the front section or the output end and the rear section of the lifting device, the steel barrels are crowded at the input end or output end of the steel barrel, or due to mechanical failure of the lifting device, the steel barrels fall over. The conveying chain is stuck. At this time, the load of the motor driving the lifting device increases, and the overload operation causes damage to the motor. It not only brings inconvenience to production, but also greatly increases production costs.

[0049] Therefore, the present application improves the traditional product transportation device and transportation line based on this.

[0050] See also Figure 1 and Figure 2 , Figure 1 The schematic diagram of the structure of the product 300 transport device provided in this embodiment is shown. Figure 2 This embodiment provides Figure 1 A schematic diagram of the enlarged structure of a local A; a product 300 transport device provided in this embodiment, the product 300 transport device includes a lifting mechanism 100, which is used to drive the product 300 to rise and fall; the lifting mechanism 100 includes a motor assembly 110, a driving shaft 120, a lifting plate 150 and a chain 140; the motor assembly 110 has a rotatable output shaft 114; the driving shaft 120 is connected to the output shaft 114 through a torque limiter 130, and is used to rotate with the output shaft 114; the lifting plate 150 is used to carry the product 300; one end of the chain 140 is engaged with the driving shaft 120, and the other end is connected to the lifting plate 150; the chain 140 is used to follow the movement of the driving shaft 120 to drive the lifting plate 150 to rise and fall; wherein the torque limiter 130 is configured to disconnect the torque limiter 130 from the driving shaft 120 or the output shaft 114 when the resistance of the chain 140 is greater than the torque setting value.

[0051] The current product 300 transport device, especially its lifting mechanism 100, is prone to the situation where the chain 140 gets stuck, causing the motor to overload. However, in this application, when the chain 140 gets stuck and causes the motor load to increase to a certain value, the torque limiter 130 can play a slipping role between the driving shaft 120 and the output shaft 114 to protect the device. During the transportation process, even if a mechanical failure occurs, causing the steel barrel to fall over and the conveying chain 140 to get stuck, it will not cause more damage to the steel barrel, let alone damage to the motor. After the fault is eliminated, the lifting mechanism 100 can resume normal operation.

[0052] In some embodiments of this application, please continue to refer to Figure 2 The motor assembly 110 of this embodiment includes: a rotating motor 111, the rotating motor 111 has a rotating shaft 112, and a first transmission wheel 113 is arranged on the rotating shaft 112; an output shaft 114, and a second transmission wheel 115 is arranged on the output shaft 114. The first transmission wheel 113 and the second transmission wheel 115 are driven by a chain 140 or a belt.

[0053] In some embodiments of this application, please refer to Figure 3 , Figure 3A schematic diagram of the structure of the product 300 transportation device provided in this embodiment is shown; the torque limiter 130 of this embodiment includes: a first fixed sleeve 131, which is sleeved on the driving shaft 120; a second fixed sleeve 132, which is sleeved on the output shaft 114, and the fixed sleeve includes a first boss 1321 abutting against the first fixed sleeve 131 and a second boss 1322 arranged away from the first fixed sleeve 131; a fixed plate 133, which is arranged between the first boss 1321 and the second boss 1322, and is arranged close to the first boss 1321; a movable plate 134, which is arranged between the fixed plate 133 and the second boss 1322, and is arranged close to the fixed plate 133; a compression spring 135, which is arranged between the movable plate 134 and the second boss 1322 to squeeze the movable plate 134 to abut against the fixed plate 133.

[0054] It should be explained that the torque limiter 130 (also called torque limiter, safety coupling, safety clutch, BMOOM limiter) is a component that connects the driving machine and the working machine. Its main function is overload protection. When the required torque exceeds the set value due to overload or mechanical failure, the torque limiter 130 limits the torque transmitted by the transmission system in the form of slipping. At the same time, it can also output a signal to stop the motor and reducer, and automatically restore the connection when the overload disappears. This prevents mechanical damage and avoids expensive downtime losses. The torque limiter 130 uses a spring-loaded friction surface, adjusts the spring force with a nut or bolt, and presets its sliding torque. According to the working principle, it can be divided into a friction torque limiter and a steel ball torque limiter (ball torque limiter), and its application range: electronic equipment industry, automated production line, conveyor industry, etc.

[0055] Specifically, the required slip torque of the torque limiter 130 is determined by the load condition or the design strength of the machine. If the load condition of the machine is unknown, the slip torque of the torque limiter is set to 1.2 to 2 times the torque generated by the motor associated with its mounting shaft.

[0056] In some embodiments of this application, please continue to refer to Figure 3 The fixing plate 133 is connected to the first fixing sleeve 131 by bolts, and the fixing plate 133 is configured to adjust the compression amount of the compression spring 135 and the torque setting value by bolting the fixing plate 133 and the first fixing sleeve 131. The torque is easy to adjust and read, and the disengagement torque value can be easily adjusted to the set value by simply rotating the adjustment bolt and then using the dial and torque indicator.

[0057] In some embodiments of this application, please refer to Figure 4 , Figure 4A schematic structural diagram of the product 300 transport device provided in this embodiment is shown; the chain 140 of this embodiment includes a first sub-chain 141 and a second sub-chain 142; the first sub-chain 141 is used to connect the first side portion of the lifting plate 150, and the second sub-chain 142 is used to connect the second side portion of the lifting plate 150, and the second side portion and the second side portion are opposite sides of the lifting plate 150.

[0058] In some embodiments of the present application, the number of the first sub-chains 141 is two and they are connected to the first side at intervals; and / or the number of the second sub-chains 142 is two and they are connected to the second side at intervals. Fixing the lifting plate 150 at four points is conducive to improving the stability of the lifting plate 150.

[0059] In some embodiments of this application, please continue to refer to Figure 1 and Figure 4 The product 300 transport device of this embodiment also includes a feeding mechanism 200, which is arranged near the bottom or top of the lifting mechanism 100 and is used to load or unload materials for the lifting mechanism; the feeding mechanism 200 includes: a telescopic cylinder 210, having a telescopic end 211; a limiting component 220, having a first position state and a second position state, and the telescopic cylinder 210 is used to drive the limiting component 220 to switch between the first position state and the second position state; the limiting component 220 is configured to limit the movement of the product 300 in the feeding mechanism 200 to the lifting mechanism 100 when the limiting component 220 is in the first position state; and is configured to release the restriction on the product 300 when the limiting component 220 is in the second position state.

[0060] In some embodiments, when the lifting mechanism 100 needs to lift the product 300, the feeding mechanism 200 is set at a position close to the bottom of the lifting mechanism 100 for loading, and the feeding mechanism 200 is set at a position close to the top of the lifting mechanism 100 for unloading. When the lifting mechanism 100 needs to lower the product 300, the feeding mechanism 200 is set at a position close to the bottom of the lifting mechanism 100 for unloading, and the feeding mechanism 200 is set at a position close to the top of the lifting mechanism 100 for loading.

[0061] In some embodiments of this application, please refer to Figure 5 , Figure 5A schematic structural diagram of the product 300 transport device provided in the present embodiment is shown; the limiting assembly 220 of the present embodiment includes a first rod portion 221 and a second rod portion 222 which are arranged at a fixed angle, and the connection point between the first rod portion 221 and the second rod portion 222 is fixed; the first rod portion 221 is connected to the telescopic end 211, and a limiting wheel 223 is provided at the end of the second rod portion 222 which is away from the connection point; the telescopic end 211 is extended to push the first rod portion 221, and the second rod portion 222 follows the movement of the first rod portion 221 to move the limiting wheel 223 away from the product 300; the telescopic end 211 contracts and pulls the first rod portion 221, and the second rod portion 222 follows the movement of the first rod portion 221 to move the limiting wheel 223 close to the product 300 and block the product 300.

[0062] In some embodiments of this application, please continue to refer to Figure 5 In this embodiment, there are two limit assemblies 220, which are arranged on both sides of the feeding route of the feeding mechanism 200.

[0063] The working process of the product 300 transport device of the present application is as follows: in the actual working process, the gas source and the power source are first started. The lifting device (corresponding to the lifting mechanism 100) and its front and rear steel barrel conveying rollers are in operation. The cylinder shaft is in a retracted state.

[0064] The steel drum (corresponding to product 300) is horizontally transported by the conveyor chain of the assembly line and reaches the limit piece in front of the lifting device (corresponding to the limit component 220). The lifting device moves upward. When the chain plate (corresponding to the lifting plate 150) reaches the sensor 2, the solenoid valve opens, the air pressure in the lower chamber rises, and the air pressure in the upper chamber drops, pushing the telescopic end 211 of the cylinder (corresponding to the telescopic cylinder 210) to extend, pushing the lower part of the limit component 220 forward, and the limit arm of the limit component 220 (corresponding to the second rod 222) opens. The steel drum moves forward on the conveying roller. When the limit component 220 contacts the air valve switch, the solenoid valve opens, the air pressure in the upper chamber rises, and the air pressure in the lower chamber drops, pushing the cylinder shaft to contract, pulling the lower part of the limit component 220 backward, and the limit arm of the limit piece inward, restricting the second steel drum from moving forward.

[0065] The first steel barrel moves forward, enters the center position of the front chain plate of the lifting device, and continues to move forward. When the chain plate reaches the sensor, the limit piece opens and the second steel barrel moves forward. At this time, the first steel barrel is lifted upward during the operation of the lifting device.

[0066] The lifting device continues to operate, and the first and second steel drums are lifted upward, and the third steel drum enters the lifting device. The lifting device continues to operate, and when the steel drum is lifted to the top of the device, the chain plate runs horizontally, and when the steel drum reaches another horizontal conveyor roller, it is conveyed by the horizontal roller and transported to the finished product stacking position in the warehouse. The production operator takes the steel drum off the conveyor chain and neatly places it in the finished product area.

[0067] Similarly: the steel barrels are transported from top to bottom.

[0068] When a steel drum is lifted or lowered by the lifting device, a mechanical failure occurs, causing the drum to fall over and jam the conveying chain 140. When the required torque exceeds the set value due to overload or mechanical failure, the torque limiter 130 limits the torque transmitted by the transmission system in the form of slipping, and gives a signal output at the same time as slipping, stopping the motor and reducer. When the overload condition disappears, the connection is automatically restored and the equipment continues to operate.

[0069] Furthermore, in order to better implement the product 300 transportation device provided in any of the above embodiments, based on the above product 300 transportation device, the present application also provides a transportation line, including the above product 300 transportation device.

[0070] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only for example and does not constitute a limitation of the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements and amendments to the present application. Such modifications, improvements and amendments are suggested in the present application, so such modifications, improvements and amendments still belong to the spirit and scope of the exemplary embodiments of the present application.

[0071] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0072] Similarly, it should be noted that in order to simplify the description of the disclosure of this application and thus help understand one or more utility model embodiments, in the above description of the embodiments of this application, multiple features are sometimes combined into one embodiment, drawing or description thereof. However, this disclosure method does not mean that the features required by the object of this application are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.

[0073] In some embodiments, numbers describing the number of components and attributes are used. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise specified, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the setting of such numerical values ​​is as accurate as possible within the feasible range.

[0074] Each patent, patent application, patent application publication, and other materials, such as articles, books, specifications, publications, documents, etc., cited in this application is hereby incorporated by reference in its entirety, except for application history documents that are inconsistent with or conflicting with the content of this application, and documents that limit the broadest scope of the claims of this application (currently or later attached to this application). It should be noted that if the descriptions, definitions, and / or use of terms in the attached materials of this application are inconsistent or conflicting with the content of this application, the descriptions, definitions, and / or use of terms in this application shall prevail.

[0075] The technical solutions provided in the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the present utility model. At the same time, for technicians in this field, according to the idea of ​​the present utility model, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present utility model.

Claims

1. A product transport device, characterized in that: It includes a lifting mechanism for driving the product to move up and down; the lifting mechanism includes: a motor assembly having a rotatable output shaft; A driving shaft connected to the output shaft through a torque limiter and configured to rotate along with the output shaft; Lifting plate, used to carry products; A chain, one end of which is meshed with the driving shaft and the other end of which is connected to the lifting plate; the chain is used to follow the movement of the driving shaft to drive the lifting plate to move up and down; The torque limiter is configured to be disconnected from the driving shaft or the output shaft when the chain resistance is greater than a torque setting value.

2. The product transport device according to claim 1, characterized in that: The motor assembly comprises: A rotating motor, wherein the rotating motor has a rotating shaft, and a first transmission wheel is arranged on the rotating shaft; An output shaft is provided with a second transmission wheel, and the first transmission wheel and the second transmission wheel are driven by a chain or a belt.

3. The product transport device according to claim 1 or 2, characterized in that: The torque limiter comprises: A first fixed sleeve, sleeved on the driving shaft; A second fixed sleeve, sleeved on the output shaft, the fixed sleeve comprising a first boss abutting against the first fixed sleeve and a second boss disposed away from the first fixed sleeve; A fixing plate, arranged between the first boss and the second boss, and arranged close to the first boss; A movable plate, disposed between the fixed plate and the second boss, and disposed close to the fixed plate; A compression spring is arranged between the movable plate and the second boss to press the movable plate to abut against the fixed plate.

4. The product transport device according to claim 3, characterized in that: The fixing plate is connected to the first fixing sleeve by bolts, and the fixing plate is configured to adjust the compression amount of the compression spring and the torque setting value by connecting the fixing plate and the first fixing sleeve by the bolts.

5. The product transport device according to claim 1, characterized in that: The chain includes a first sub-chain and a second sub-chain; the first sub-chain is used to connect the first side of the lifting plate, and the second sub-chain is used to connect the second side of the lifting plate, and the second side and the second side are opposite sides of the lifting plate.

6. The product transport device according to claim 5, characterized in that: The number of the first sub-chains is two, and the first sub-chains are connected to the first side portion at intervals; And / or, the number of the second sub-chains is two, and they are connected to the second side portion at intervals.

7. The product transport device according to claim 1, characterized in that: The product transport device further includes a feeding mechanism, which is arranged near the bottom or top of the lifting mechanism and is used to load or unload materials for the lifting mechanism; the feeding mechanism includes: A telescopic cylinder having a telescopic end; A limit assembly having a first position state and a second position state, wherein the telescopic cylinder is used to drive the limit assembly to switch between the first position state and the second position state; The limit assembly is configured to limit the movement of the product in the feeding mechanism to the lifting mechanism when the limit assembly is in the first position; and is configured to release the restriction on the product when the limit assembly is in the second position.

8. The product transport device according to claim 7, characterized in that: The limiting assembly comprises a first rod portion and a second rod portion arranged at a fixed angle, and a connection point between the first rod portion and the second rod portion is fixed; The first rod portion is connected to the telescopic end, and a limiting wheel is provided at one end of the second rod portion away from the connection point; the telescopic end extends to push the first rod portion, and the second rod portion follows the movement of the first rod portion to move the limiting wheel away from the product; the telescopic end contracts and pulls the first rod portion, and the second rod portion follows the movement of the first rod portion to move the limiting wheel close to the product and block the product.

9. The product transport device according to claim 8, characterized in that: The number of the limit assemblies is two, and they are arranged on both sides of the feeding route of the feeding mechanism.

10. A transport line, characterized in that: A product transport device comprising the product transport device according to any one of claims 1 to 9.

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