A steel sheet conveying device

Abstract

The application relates to the technical field of steel plate transportation, and provides a steel plate transportation device, which comprises a chassis, the chassis is used for placing a steel plate thereon, a first direction limiting unit is installed on the chassis and is used for blocking the movement of the steel plate, the first direction limiting unit comprises a limiting structure, an elastic mechanism and a buffer structure, the limiting structure is detachably connected with the chassis, the elastic mechanism comprises a spring assembly and a roller, the spring assembly is fixed with the limiting structure, the axis of the spring assembly is perpendicular to the plane where the chassis is located, and the roller is arranged at the bottom of the spring assembly; the limiting structure comprises a sliding rail, the bottom of the buffer structure comprises an inclined part, the inclined part contacts the roller, and when the buffer structure moves in the direction of the limiting structure along the sliding rail, the roller moves upwards along the inclined part and compresses the spring assembly. Through the arrangement of the elastic mechanism and the buffer structure, the overall stress of the device is more dispersed, the service life of the device is prolonged, and the safety and reliability of the transportation process are ensured.

Description

Technical Field

[0001] This invention relates to the field of steel plate transportation technology, and in particular to a steel plate transportation device. Background Technology

[0002] During railway transportation, the steel plates, due to their significant weight, exhibit considerable inertia. When the train starts or brakes, the steel plates, under the influence of inertia, are prone to displacement or misalignment relative to the transport carriage along the direction of travel, causing impact and damage to the carriage walls and the vehicle structure. Therefore, existing technologies typically employ dedicated steel plate supports within the transport carriage to limit and fix the steel plates, reducing the risk of impact to the carriage walls. For example, Chinese patent CN223014611U discloses a steel plate support that, through its limiting structure, effectively constrains the steel plates during transportation, mitigating the direct impact of the steel plates on the internal structure of the vehicle.

[0003] However, technicians discovered significant defects in the aforementioned steel plate support frame during long-term use. Specifically, the column components used to restrict the movement of the steel plate along the train's direction of travel are subjected to enormous cyclic impact loads under frequent start-stop conditions. Each time the train starts or brakes, the steel plate exerts a considerable force on the column, leading to fatigue accumulation and a shortened service life. Premature damage to such columns not only increases the frequency of equipment maintenance and replacement, raising transportation costs, but may also weaken the support frame's ability to restrain the steel plate under certain conditions, potentially causing the steel plate to shift and impact the train wall again, thus affecting transportation safety.

[0004] Therefore, there is a need in this field to provide a new type of steel plate support structure that can effectively limit the displacement of steel plates during railway transportation, protect the carriage walls from impact, and facilitate storage and transportation, while improving impact resistance and the service life of key load-bearing components, thus ensuring the safety of railway steel plate transportation. Summary of the Invention

[0005] The purpose of this invention is to provide a steel plate transport device that solves the technical problems of steel plate displacement impacting the carriage, weak impact resistance of steel frame, and short service life in the prior art.

[0006] This invention provides a steel plate transport device, comprising: a base frame for placing steel plates thereon; a first-direction limiting unit mounted on the base frame for blocking movement of the steel plates, the first-direction limiting unit including a limiting structure, an elastic mechanism, and a buffer structure; the limiting structure is detachably connected to the base frame, the elastic mechanism includes a spring assembly and a roller, the spring assembly is fixed to the limiting structure, the axis of the spring assembly is perpendicular to the plane of the base frame, and the roller is disposed at the bottom of the spring assembly; the limiting structure includes a slide rail, and the bottom of the buffer structure includes an inclined portion that contacts the roller; when the buffer structure moves along the slide rail toward the limiting structure, the roller moves upward along the inclined portion and compresses the spring assembly.

[0007] Furthermore, the limiting structure includes two parallel first columns, the first columns being perpendicular to the plane of the base frame; the limiting structure also includes a first crossbar, the first crossbar being fixed to the two first columns, and the spring assembly being fixed to the first crossbar.

[0008] Furthermore, the elastic mechanism includes at least two of the spring assemblies.

[0009] Furthermore, the elastic mechanism includes three spring assemblies, namely a first spring assembly, a second spring assembly, and a third spring assembly. The first spring assembly, the second spring assembly, and the third spring assembly are sequentially fixed to the first crossbar. The second spring assembly is fixed at the midpoint of the first crossbar. The distances between the first spring assembly, the third spring assembly, and the second spring assembly are the same and greater than or equal to one-quarter of the length of the first crossbar. The buffer structure includes three inclined portions, namely a first inclined portion, a second inclined portion, and a third inclined portion. The first inclined portion, the second inclined portion, and the third inclined portion correspond to the first spring assembly, the second spring assembly, and the third spring assembly, respectively. The inclination angles of the first inclined portion and the third inclined portion are the same and greater than the inclination angle of the second inclined portion.

[0010] Furthermore, the width of the buffer structure is less than the distance between the two first pillars.

[0011] Furthermore, the spring assembly includes a first spring and a second spring, with the first spring sleeved outside the second spring; the first spring and the second spring have different elastic stiffnesses.

[0012] Furthermore, the spring assembly also includes a spring limiting cylinder and a spring support rod. The spring limiting cylinder is fixed to the first crossbar. The first spring and the second spring are located inside the spring limiting cylinder. The first end of the spring support rod contacts the first spring and / or the second spring and is located inside the spring limiting cylinder. The second end of the spring support rod is fixed to the roller.

[0013] Furthermore, the free length of the first spring is less than the free length of the second spring, the compression length of the first spring is greater than or equal to the compression length of the second spring, and the elastic stiffness of the first spring is greater than the elastic stiffness of the second spring.

[0014] Furthermore, the limiting structure also includes a second crossbar, which is fixed to the two first columns, and the slide rail is fixed to the second crossbar. The number of slide rails corresponds to the number of spring assemblies.

[0015] Furthermore, the slide rail includes a track and a slotted steel plate located above the track, and a slider is provided at the bottom of the inclined portion, the slider being connected to the inclined portion via a support block.

[0016] Furthermore, the first column includes a snap-fit ​​limiting part, and the base frame includes a first column mounting part and a snap-fit ​​assembly. The first column is installed into the first column mounting part, and the snap-fit ​​assembly is snapped into the snap-fit ​​limiting part, so that the first column is fixed to the base frame.

[0017] Furthermore, the first column mounting part includes a first guide groove and a second guide groove, and the first column includes a first protrusion and a second protrusion, the first protrusion cooperating with the first guide groove, and the second protrusion cooperating with the second guide groove.

[0018] Furthermore, the first column includes a web and a first wing plate and a second wing plate vertically connected to both sides of the web, the first wing plate and the second wing plate being arranged parallel to each other, and a first side plate and a second side plate parallel to the web and located on both sides of the web, the two ends of the first side plate and the second side plate being connected to the first wing plate and the second wing plate respectively. Furthermore, the first column also includes an upper cover plate and a lifting ring, the lifting ring being located above the upper cover plate.

[0019] Furthermore, the first column also includes a U-shaped plate, which is fixedly disposed on the outside of the first wing plate.

[0020] Furthermore, the tilt angle of the tilted portion is less than or equal to 45°.

[0021] Furthermore, it also includes a second direction limiting unit, which includes a second column. The base frame also includes a second direction limiting unit limiting part, which includes an insertion hole. A plurality of insertion holes are distributed at intervals along the second direction to form a row, and the two rows of insertion holes are staggered in the first direction. The second column is configured to allow insertion into any one of the insertion holes.

[0022] Furthermore, the second directional limiting unit also includes a pull rope, the two ends of which are respectively connected to the base frame and the second column.

[0023] The embodiments of the present invention have at least the following technical effects: The steel plate transport device provided in this embodiment of the invention includes a base frame and a first-direction limiting unit. In use, the base frame is located below the steel plate, and the first-direction limiting unit is used to limit the inertial movement of the steel plate in the transport direction caused by starting or braking, protecting the end walls of the carriage from damage. The first-direction limiting unit includes a limiting structure, an elastic mechanism, and a buffer structure. The elastic mechanism includes a spring assembly and a roller. The spring assembly is fixed to the limiting structure, and the roller is located below the spring assembly. A slide rail is fixed to the limiting structure. The bottom of the buffer structure near the limiting structure has an inclined portion, allowing the buffer structure to move along the slide rail. When the steel plate impacts the buffer structure, the buffer structure moves towards the limiting structure. At this time, the inclined surface of the inclined portion pushes the roller upward. As the roller moves upward, it compresses the spring assembly. The cooperation between the inclined portion and the elastic mechanism transforms the impact force of the steel plate on the buffer structure from a force parallel to the bottom of the carriage to a force perpendicular to the bottom of the carriage. The force on the surface is reduced, mitigating the impact of forces parallel to the bottom of the carriage on the limiting structure and effectively extending its service life. Furthermore, the limiting structure is fixedly connected to the base frame; even if the spring assembly exerts an upward force on the limiting structure during compression, the limiting structure will not detach from the base frame because it is connected. This connection also distributes the impact force of the steel plate on the first-direction limiting unit to the base frame, resulting in a more even distribution of stress on the entire steel plate transport device and reducing the risk of damage. When not in use, the limiting structure can be disconnected from the base frame, and the first-direction limiting unit can be completely removed for easy disassembly and storage.

[0024] In this embodiment, by setting an elastic mechanism and a buffer structure, the impact force parallel to the bottom surface of the carriage is converted into an upward impact force perpendicular to the bottom surface of the carriage. This reduces the impact on the limiting structure that is parallel to the bottom surface of the carriage. At the same time, since the limiting structure is connected to the base frame, the limiting structure will not move upward. Therefore, the force supporting the limiting structure upward will also be distributed to the base frame, making the overall force of the device more dispersed, improving the service life of the device, and ensuring the safety and reliability of the transportation process. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a three-dimensional structural schematic diagram of a steel plate transport device provided in an embodiment of the present invention; Figure 2 This is a top view of a steel plate transport device provided in an embodiment of the present invention; Figure 3 This is a three-dimensional structural diagram of the first direction limiting unit provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the base frame structure provided in an embodiment of the present invention; Figure 5 This is a top view schematic diagram of the first direction limiting unit structure provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the spring assembly structure provided in an embodiment of the present invention.

[0027] Icons: 1-Base frame; 2-First direction limiting unit; 3-Second direction limiting unit; 11-First column mounting part; 12-Second direction limiting unit limiting part; 21-Limiting structure; 22-Elastic mechanism; 23-Buffer structure; 31-Second column; 32-Pull rope; 110-Snap-fit ​​assembly; 111-First guide groove; 112-Second guide groove; 120-Insertion hole; 213-Second crossbar; 210-Slide rail; 211-First column; 212-First crossbar; 221-Spring assembly; 222-Roller; 231-Inclined part; 2110-Snap-fit ​​limiting part ; 2111-Body plate; 2112-First wing plate; 2113-Second wing plate; 2114-First side plate; 2115-Second side plate; 2116-Top cover plate; 2117-Lifting ring; 2118-U-shaped plate; 2119-First protrusion; 2211-First spring; 2212-Second spring; 2213-Spring limiting cylinder; 2214-Spring support rod; 2311-First inclined part; 2312-Second inclined part; 2313-Third inclined part; 22101-First spring assembly; 22102-Second spring assembly; 22103-Third spring assembly. Detailed Implementation

[0028] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. 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.

[0029] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0030] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or combinations thereof. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0031] Please see Figures 1 to 6 This invention provides a steel plate transport device, comprising: a base frame 1 for placing steel plates thereon; a first direction limiting unit 2 mounted on the base frame 1 for blocking the movement of the steel plates; the first direction limiting unit 2 includes a limiting structure 21, an elastic mechanism 22, and a buffer structure 23; the limiting structure 21 is detachably connected to the base frame 1; the elastic mechanism 22 includes a spring assembly 221 and a roller 222; the spring assembly 221 is fixed to the limiting structure 21; the axis of the spring assembly 221 is perpendicular to the plane of the base frame 1; the roller 222 is disposed at the bottom of the spring assembly 221; the limiting structure 21 includes a slide rail 210; the bottom of the buffer structure 23 includes an inclined portion 231; the inclined portion 231 contacts the roller 222; when the buffer structure 23 moves along the slide rail 210 toward the limiting structure 21, the roller 222 moves upward along the inclined portion 231 and compresses the spring assembly 221.

[0032] In this embodiment, the steel plate transport device includes a base frame 1 and a first direction limiting unit 2. When in use, the base frame 1 is located below the steel plate, and the first direction limiting unit 2 is used to limit the inertial movement of the steel plate in the transport direction caused by starting or braking, so as to protect the end wall of the carriage from damage, i.e., the first direction in the figure. The first-direction limiting unit 2 includes a limiting structure 21, an elastic mechanism 22, and a buffer structure 23. The elastic mechanism 22 includes a spring assembly 221 and a roller 222. The spring assembly 221 is fixed to the limiting structure 21, and the roller 222 is located below the spring assembly 221. The plane perpendicular to the bottom of the carriage where the buffer structure 23 is located is parallel to the plane perpendicular to the bottom of the carriage where the limiting structure 21 is located. A slide rail 210 is provided at the bottom of the limiting structure 21, and an inclined portion 231 is provided at the bottom of the buffer structure 23 near the limiting structure 21. The buffer structure 23 can move along the slide rail 210. When the steel plate impacts the buffer structure 23, the buffer structure 23 moves towards the limiting structure 21, i.e., moves in the first direction. At this time, the inclined surface of the inclined portion 231 pushes the roller 222 upward. When the roller 222 moves upward, it compresses the spring assembly 221. The cooperation between 31 and the elastic mechanism 22 transforms the impact force of the steel plate on the buffer structure 23 from a force parallel to the bottom surface of the carriage to a force perpendicular to the bottom surface of the carriage, reducing the impact of the force parallel to the bottom surface of the carriage on the limiting structure 21 and effectively extending the service life of the limiting structure 21. Moreover, the limiting structure 21 is fixedly connected to the base frame 1. Even if the spring assembly 221 exerts an upward force on the limiting structure 21 when compressed, the limiting structure 21 will not detach from the base frame 1 because the limiting structure 21 is connected to the base frame 1. Furthermore, due to this connection, the impact force of the steel plate on the first direction limiting unit 2 can be distributed to the base frame 1, making the stress structure of the entire steel plate transport device more evenly distributed and reducing the risk of device damage. When not in use, the limiting structure 21 can be disconnected from the base frame 1, and the first direction limiting unit 2 can be completely removed for easy disassembly and storage.

[0033] In this embodiment, by setting the elastic mechanism 22 and the buffer structure 23, the impact force parallel to the bottom surface of the carriage is converted into an upward impact force perpendicular to the bottom surface of the carriage. This reduces the impact parallel to the bottom surface of the carriage on the limiting structure 21. At the same time, since the limiting structure 21 is connected to the base frame 1, the limiting structure 21 will not move upward. Therefore, the force supporting the limiting structure 21 upward will also be distributed to the base frame 1, making the overall force of the device more dispersed, improving the service life of the device, and ensuring the safety and reliability of the transportation process.

[0034] Optionally, the limiting structure 21 includes two parallel first columns 211, which are perpendicular to the plane of the base frame 1; it also includes a first crossbar 212, with both ends of the first crossbar 212 fixed to the two first columns 211 respectively, and a spring assembly 221 fixed to the first crossbar 212. In this embodiment, the two ends of the first crossbar 212 are fixed to the two first columns 211 respectively, and the spring assembly 221 is fixed to the first crossbar 212. When the spring assembly 221 is compressed, it transmits the pressure to the first crossbar 212. The impact force that was originally parallel to the bottom surface of the carriage is converted into an upward impact force perpendicular to the bottom surface of the carriage. The presence of the first crossbar 212 allows the upward impact force to be transmitted to the entire limiting structure 21, which is beneficial for the dispersion of the impact force.

[0035] Optionally, the elastic mechanism 22 includes at least two spring assemblies 221. In this embodiment, at least two spring assemblies 221 are fixed to the first crossbar 212, which can both distribute the impact load and improve the fatigue life of each spring assembly, and also distribute the impact force on the first crossbar 212 to two positions, reducing the single-point impact on the first crossbar 212 when using a single spring assembly, and improving the service life of the first crossbar 212.

[0036] Optionally, the elastic mechanism 22 includes three spring assemblies 221, namely a first spring assembly 22101, a second spring assembly 22102, and a third spring assembly 22103. The first spring assembly 22101, the second spring assembly 22102, and the third spring assembly 22103 are sequentially fixed to the first crossbar 212. The second spring assembly 22102 is fixed at the midpoint of the first crossbar 212. The distances between the first spring assembly 22101 and the third spring assembly 22103 and the second spring assembly 22102 are the same and greater than 1 / 3. It is equal to one-quarter of the length of the first crossbar 212; the buffer structure includes three inclined parts 231, namely the first inclined part 2311, the second inclined part 2312 and the third inclined part 2313. The first inclined part 2311, the second inclined part 2312 and the third inclined part 2313 correspond to the rollers at the bottom of the first spring assembly, the rollers at the bottom of the second spring assembly and the rollers at the bottom of the third spring assembly, respectively. The inclination angles of the first inclined part 2311 and the third inclined part 2313 are the same and greater than the inclination angle of the second inclined part 2312.

[0037] In this embodiment, the two ends of the first crossbar 212 are fixedly connected to the first column 211. The torque on the first crossbar 212 near the first column 211 is different from the torque at the midpoint of the first crossbar 212. The impact force threshold that the first crossbar 212 near the first column 211 can withstand is greater than the impact force threshold at the midpoint of the first crossbar 212. Therefore, the second spring assembly 22102 is located at the midpoint of the first crossbar 212. The distance between the first spring assembly 22101 and the third spring assembly 22103 and the second spring assembly 22102 is greater than or equal to one-quarter of the length of the first crossbar 212. Preferably, the first spring assembly 22101 and the third spring assembly 22103 are closer to the two first columns 211, that is, the distance between the first spring assembly 22101 and the third spring assembly 22103 and the second spring assembly 22102 is greater than one-quarter of the length of the first crossbar 212. The tilt angles of the corresponding first tilted portion 2311 and third tilted portion 2313 are greater than the tilt angle of the second tilted portion 2312, so that the force on the first spring assembly and the third spring assembly on the first crossbar 212 is greater than the force on the second spring assembly, ensuring that the impact energy on the first crossbar 212 is balanced and not easily damaged.

[0038] Optionally, the width W of the buffer structure 23 is less than the distance D between the two first columns 211. In this embodiment, the distance between the two first columns 211 should be the distance between the two closest surfaces of the two first columns 211. Since the width W of the buffer structure 23 is less than the distance D between the two first columns 211, when the buffer structure 23 is impacted by the steel plate, it will not collide with the two first columns 211, but will instead retract into the space formed by the line connecting the two first columns 211. This prevents the buffer structure 23 from being sandwiched between the first columns 211 and the steel plate. The buffer structure 23 only serves a buffering function and converts part of the horizontal impact force into a vertical impact force. Moreover, this design does not cause the buffer structure 23 to occupy more space, allowing it to accommodate more types of steel plates. Specifically, when the roller 222 moves to the highest point of the inclined section 231, the distance between the plane of the side of the buffer structure 23 near the steel plate and the plane of the side of the two first columns 211 away from the steel plate is less than the distance between the plane of the side of the two first columns 211 near the steel plate and the plane of the side of the two first columns 211 away from the steel plate.

[0039] Optionally, the spring assembly 221 includes a first spring 2211 and at least one second spring 2212, with the first spring 2211 sleeved on the outside of the second spring 2212; the first spring 2211 and the second spring 2212 have different elastic stiffnesses.

[0040] In this embodiment, by setting a first spring 2211 and a second spring 2212 with different stiffnesses, the spring with lower stiffness compresses first upon initial impact, absorbing the initial vibration energy with lower stiffness and slowing down the rate of increase of the impact force. When the compression exceeds a predetermined threshold, the spring with higher stiffness begins to intervene and share the load with the spring with lower stiffness, providing a larger reaction force to limit displacement. This arrangement makes the entire buffering process exhibit a gradual characteristic of being soft first and then stiff, which can effectively reduce the peak force in the early stage of impact and ensure sufficient limiting capacity under large impact, thereby reducing the instantaneous impact damage to the first crossbar 212 and the entire limiting structure 21 and extending its service life. Moreover, the first spring 2211 is sleeved on the outside of the second spring 2212, and the inner and outer springs are nested, which not only improves the space utilization rate and obtains the superimposed elastic force of the two springs in the limited axial installation space, but also improves the radial stability of the spring during compression and reduces the risk of lateral bending and instability during compression. Furthermore, two springs are installed so that when one spring fails, the other spring can still maintain basic buffering and limiting functions, preventing the steel plate from directly impacting the vehicle wall or pillar, thus further improving transportation safety.

[0041] Optionally, the spring assembly 221 further includes a spring limiting cylinder 2213 and a spring support rod 2214. The spring limiting cylinder 2213 is fixed to the first crossbar 212. The first spring 2211 and the second spring 2212 are located inside the spring limiting cylinder 2213. The first end of the spring support rod 2214 contacts the first spring 2211 or the second spring 2212 and is located inside the spring limiting cylinder 2213. The second end of the spring support rod 2214 is fixed to the roller 222. The spring support rod 2214 moves up and down along the spring limiting cylinder 2213. In this embodiment, the spring limiting cylinder 2213 ensures the radial stability of the spring during compression and reduces lateral bending during compression. One end of the spring support rod 2214 abuts against the first spring 2211 or the second spring 2212, and the other end is fixed to the roller 222. The roller 222 abuts against the inclined surface of the inclined portion 231. When the steel plate impacts the buffer structure 23, the buffer structure 23 moves towards the limiting structure 21. At this time, the inclined surface of the inclined part 231 pushes the roller 222 to rotate and move upward. When the spring support rod 2214 moves upward, it compresses the spring assembly 221. Figure 6 In the middle, at least one of the two ends of the second spring 2212 needs to be fixed with the spring limiting sleeve 2213 or the spring support rod 2214, and only one of the two ends of the first spring 2211 needs to be fixed with the spring limiting sleeve 2213 or the spring support rod 2214, and both ends cannot be fixed.

[0042] Optionally, the free length of the first spring 2211 is less than the free length of the second spring 2212, and the compression length of the first spring 2211 is greater than or equal to the compression length of the second spring 2212; the elastic stiffness of the first spring 2211 is greater than the elastic stiffness of the second spring 2212. In this embodiment, the first spring 2211, which has a shorter free length but a higher elastic stiffness, is sleeved on the outside of the second spring 2212, which has a longer free length but a lower elastic stiffness. When the buffer structure 23 moves toward the limiting structure 21, it first compresses only the second spring 2212. After the compression exceeds a predetermined threshold, the first spring 2211 also participates. The first spring 2211 and the second spring 2212 are compressed together, which reduces instantaneous impact damage and ensures sufficient limiting capability. Since the elastic stiffness of the first spring 2211 is greater than that of the second spring 2212, the compression length of the first spring 2211 is set to be greater than or equal to that of the second spring 2212. The first spring 2211 provides more buffering force, which can effectively protect the second spring 2212 from being damaged by impact.

[0043] It should be noted that when the buffer structure 23 is not impacted by the steel plate, the second spring 2212 is already in a compressed state, causing the roller 222 to press against the inclined surface of the inclined part 231, but at this time the first spring 2211 is still in a free state and is not compressed.

[0044] Optionally, the limiting structure 21 further includes a second crossbar 213, with both ends of the second crossbar 213 fixed to the first column 211. A slide rail 210 is fixed to the second crossbar 213, and the position and number of slide rails 210 correspond to the position and number of spring assemblies 221. In this embodiment, the slide rail 210 is fixed to the second crossbar 213, and the second crossbar 213 is fixed to the first column 211. The buffer structure 23 ensures its position is stable when moving along the slide rail 210.

[0045] Optionally, the slide rail 210 includes a track and a slotted steel plate located above the track. A slider is provided at the bottom of the inclined portion, and the slider is connected to the inclined portion through a support block. In this embodiment, the slotted steel plate can prevent dust, iron filings, and other debris from falling into the track and prevent sliding jamming. Preferably, the track has a V-shaped cross-section, and the slider cross-section can be V-shaped or trapezoidal to fit the track.

[0046] Optionally, the first column 211 includes a snap-fit ​​limiting part 2110, and the base frame 1 includes a first column mounting part 11 and a snap-fit ​​component 110. The first column 211 is installed into the first column mounting part 11, and the snap-fit ​​component 110 is snapped into the snap-fit ​​limiting part 2110, thereby fixing the first column 211 to the base frame 1. In this embodiment, the first column 211 is provided with a snap-fit ​​limiting part 2110. After the snap-fit ​​limiting part 2110 is aligned with the snap-fit ​​component 110, the snap-fit ​​component 110 is snapped into the snap-fit ​​limiting part 2110, and the first column 211 is fixed to the base frame 1, so that even if the first column 211 is subjected to an upward force, it will not detach from the base frame 1.

[0047] Optionally, the first column mounting portion 11 includes a first guide groove 111 and a second guide groove 112, and the first column 211 includes a first protrusion 2119 and a second protrusion. In this embodiment, the first column mounting portion 11 is provided with the first guide groove 111 and the second guide groove 112 to facilitate the installation of the first column 211, and the first protrusion 2119 and the second protrusion are respectively engaged in the first guide groove 111 and the second guide groove 112 to move downward. Optionally, the first column 211 includes a web 2111 and a first wing plate 2112 and a second wing plate 2113 vertically connected to both sides of the web 2111, and two side plates. The first wing plate 2112 and the second wing plate 2113 are arranged parallel to each other, and the first wing plate 2112, the web 2111 and the second wing plate 2113 together form two opposing opening slots. The two side plates include a first side plate 2114 and a second side plate 2115, which respectively close the openings of the two opening slots. In this embodiment, the plane where the web plate 2111 is located is parallel to the second direction, which is beneficial for the steel plate to withstand pressure when impacted along the first direction; a locking pin hole is provided on the first side plate 2114, which can serve as a locking and limiting part 2110. Even if the spring assembly 221 is compressed and has an upward supporting force on the limiting structure 21, it will not separate from the base frame 1 because the locking pin shaft is locked in the locking pin hole; when it needs to be disassembled after use, it is only necessary to disengage the locking pin shaft from the locking pin hole and lift the limiting structure 21 upward to remove the limiting structure 21.

[0048] Preferably, the web 2111 and the first flange 2112 and the second flange 2113 vertically connected to both sides of the web are H-beams, and the first side plate 2114 and the second side plate 2115 are both welded to the first flange 2112 and the second flange 2113.

[0049] Optionally, the first column 211 further includes an upper cover plate 2116 and a lifting ring 2117, with the lifting ring 2117 located above the upper cover plate 2116. In this embodiment, the upper cover plate 2116 is located at one end along the length of the first column 211. During disassembly or installation, the lifting ring 2117 is easier to use in conjunction with other machinery for hoisting, making it convenient and labor-saving. Preferably, the upper cover plate 2116 is welded to the first wing plate 2112, the second wing plate 2113, and the two sealing plates, and the lifting ring 2117 is welded to the upper cover plate 2116.

[0050] Optionally, the first column 211 further includes a U-shaped plate 2118, which is fixedly disposed on the outer side of the first wing plate 2112. In this embodiment, the two ends of the U-shaped opening of the U-shaped plate 2118 are fixed to the first wing plate 2112, and the bottom of the U-shaped plate 2118 contacts the base frame. The U-shaped plate 2118 enhances the impact resistance of the first column 211.

[0051] Optionally, the tilt angle of the inclined portion 231 is less than or equal to 45°. In this embodiment, the tilt angle of the inclined portion 231 is less than or equal to 45°, so the buffer structure will not violently compress the spring due to a small impact, and the tilt angle of less than or equal to 45° is also conducive to the rolling of the roller, avoiding the roller not rolling upward due to an excessively large tilt angle. The tilt angle of the inclined portion 231 refers to the acute angle formed by the inclined surface of the inclined portion 231 in contact with the roller 222 and the horizontal plane where the slide rail 210 is located.

[0052] Optionally, a second-direction limiting unit 3 is also included. The second-direction limiting unit 3 includes a second column 31, and the base frame 1 also includes a second-direction limiting unit limiting part 12. The second-direction limiting unit limiting part includes insertion holes 120. Multiple insertion holes 120 are distributed at intervals along the second direction to form a row, and the two rows of insertion holes 120 are staggered in the first direction. The second column 31 is configured to allow insertion into any one of the insertion holes 120. In this embodiment, the second column 31 can be inserted into any one of the insertion holes 120, which can be adjusted according to the width of the steel plate. The staggered distribution of multiple insertion holes 120 facilitates more precise adjustment of the position of the second column 31 and reduces the impact caused by the movement of the steel plate in the second direction.

[0053] Optionally, the second directional limiting unit 3 further includes a pull rope 32, with its two ends connected to the base frame 1 and the second column 31, respectively. In this embodiment, the pull rope 32 facilitates storage and prevents loss after the second column 31 is removed.

[0054] Those skilled in the art will understand that the steps, measures, and schemes in the various operations, methods, and processes discussed in this invention can be alternated, modified, combined, or deleted. Furthermore, other steps, measures, and schemes in the various operations, methods, and processes discussed in this invention can also be alternated, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and schemes in the prior art that are similar to those disclosed in this invention can also be alternated, modified, rearranged, decomposed, combined, or deleted.

[0055] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0056] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0057] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0058] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A steel plate conveying device, characterized in that, include: A base frame, on which steel plates are placed; A first directional limiting unit is mounted on the base frame to block the movement of the steel plate. The first directional limiting unit includes a limiting structure, an elastic mechanism, and a buffer structure. The limiting structure is detachably connected to the base frame. The elastic mechanism includes a spring assembly and a roller. The spring assembly is fixed to the limiting structure. The axis of the spring assembly is perpendicular to the plane where the base frame is located. The roller is located at the bottom of the spring assembly. The limiting structure includes a slide rail, and the bottom of the buffer structure includes an inclined portion that contacts the roller. When the buffer structure moves along the slide rail toward the limiting structure, the roller moves upward along the inclined portion and compresses the spring assembly. The limiting structure includes two parallel first columns, which are perpendicular to the plane of the base frame. The limiting structure also includes a first crossbar, which is fixed to the two first columns, and the spring assembly is fixed to the first crossbar. The width of the buffer structure is less than the distance between the two first columns; When the roller moves to the highest point of the inclined section, the distance between the plane of the buffer structure near the steel plate and the plane of the two first columns away from the steel plate is less than the distance between the plane of the two first columns near the steel plate and the plane of the two first columns away from the steel plate.

2. The steel plate conveying device according to claim 1, characterized in that, The elastic mechanism includes at least two of the spring assemblies.

3. The steel plate conveying device according to claim 2, characterized in that, The elastic mechanism includes three spring assemblies, namely a first spring assembly, a second spring assembly, and a third spring assembly. The first spring assembly, the second spring assembly, and the third spring assembly are sequentially fixed to a first crossbar. The second spring assembly is fixed at the midpoint of the first crossbar. The distances between the first spring assembly, the third spring assembly, and the second spring assembly are the same and greater than or equal to one-quarter of the length of the first crossbar. The buffer structure includes three inclined portions, namely a first inclined portion, a second inclined portion, and a third inclined portion. The first inclined portion, the second inclined portion, and the third inclined portion correspond to the first spring assembly, the second spring assembly, and the third spring assembly, respectively. The inclination angles of the first inclined portion and the third inclined portion are the same and greater than the inclination angle of the second inclined portion.

4. The steel plate conveying device according to claim 1, characterized in that, The spring assembly includes a first spring and a second spring, with the first spring sleeved on the outside of the second spring; the first spring and the second spring have different elastic stiffnesses.

5. The steel plate conveying device according to claim 4, characterized in that, The spring assembly further includes a spring limiting cylinder and a spring support rod. The spring limiting cylinder is fixed to the first crossbar. The first spring and the second spring are located inside the spring limiting cylinder. The first end of the spring support rod contacts the first spring and / or the second spring and is located inside the spring limiting cylinder. The second end of the spring support rod is fixed to the roller.

6. The steel plate conveying device according to claim 5, characterized in that, The free length of the first spring is less than the free length of the second spring, the compression length of the first spring is greater than or equal to the compression length of the second spring, and the elastic stiffness of the first spring is greater than the elastic stiffness of the second spring.

7. The steel plate conveying device according to claim 1, characterized in that, The limiting structure also includes a second crossbar, which is fixed to the two first columns. The slide rail is fixed to the second crossbar, and the number of slide rails corresponds to the number of spring assemblies.

8. The steel plate conveying device according to claim 1, characterized in that, The first column includes a snap-fit ​​limiting part, and the base frame includes a first column mounting part and a snap-fit ​​assembly. The first column is installed into the first column mounting part, and the snap-fit ​​assembly is snapped into the snap-fit ​​limiting part, so that the first column is fixed to the base frame.

9. The steel plate conveying device according to claim 1, characterized in that, The tilt angle of the inclined portion is less than or equal to 45°.

10. The steel plate conveying device according to claim 1, characterized in that, It also includes a second direction limiting unit, which includes a second column. The base frame also includes a second direction limiting unit limiting part, which includes an insertion hole. A plurality of insertion holes are distributed at intervals along the second direction to form a row, and the two rows of insertion holes are staggered in the first direction. The second column is configured to allow insertion into any one of the insertion holes.

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