Marble slab transport and hoist structure

Abstract

The utility model belongs to marble plate material transportation field discloses a kind of marble plate transportation lifting structure, comprising: the bearing platform is used to support the material to be transferred;The driving portion of multiple lifting assemblies is electrically connected with the same control system, to make multiple flexible transmission portion synchronous action, and the supporting platform is provided with rigid guide assembly in vertical direction, the overall lifting of the bearing platform is driven by rigid guide device, the bearing platform is divided into multiple control regions along length direction, and independent lifting assembly is configured for each region, so that lifting force distribution is more uniform, and the stability of the bearing platform is improved, and multiple lifting assemblies improve the bearing strength of the bearing platform, when the weight of the two ends of the bearing platform is not parallel, the lifting assembly close to the side of feed inlet still maintains vertical direction upper and lower correspondence with marble plate, to provide stable support for the bearing platform.

Description

Technical Field

[0001] This disclosure pertains to the field of marble slab transportation, specifically relating to a marble slab transportation and lifting structure. Background Technology

[0002] In processes such as drying marble slabs, when dealing with multi-layer drying boxes, the marble slabs need to be transported to feed inlets of different heights. Currently, a transport device with an adjustable marble support platform is used.

[0003] For example, Chinese patent document CN102589264A discloses a multi-layer drying oven system, which uses a lifting system to lift workpieces on the conveyor section and send them into different layers of the drying oven. This lifting system includes a lifting platform, a lifting chain that drives the lifting platform, and a drive motor. However, to maintain the stability of the lifting platform's movement, a single drive source is usually used. However, with only one drive source, the lifting platform's load-bearing capacity is relatively weak. Since marble slabs are heavy, when one side of the marble slab detaches from the lifting platform and enters the drying oven, the lifting platform experiences uneven stress, which can easily lead to tilting or shaking of the platform, thus affecting the stable conveying and accurate positioning of the slab. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this disclosure is to provide a marble slab transportation and lifting structure that solves the problem that, in existing technologies, when a single drive source lifts the load-bearing platform, the platform is prone to tilting and shaking when the marble slab partially moves off the platform or the load is unevenly distributed.

[0005] The objective of this disclosure can be achieved through the following technical solutions:

[0006] A marble slab transport and lifting structure includes: a support platform for supporting materials to be transferred;

[0007] At least two sets of lifting components, each set of lifting components including at least two flexible transmission parts arranged at intervals along the width direction of the bearing platform, and a drive part for driving the flexible transmission parts to move up and down synchronously;

[0008] Among them, the flexible transmission parts in different lifting components are arranged along the length direction of the bearing platform;

[0009] The drive units of the multiple lifting components are electrically connected to the same control system to enable the multiple flexible transmission units to operate synchronously, and the support platform is provided with a rigid guide component in the vertical direction, which drives the overall lifting of the support platform through the rigid guide device.

[0010] In some disclosures, the support frame includes multiple parallel support legs, a flexible transmission unit is located on the side of the support legs near the bearing platform, and angle steel is fixed at the edge of the bearing platform, with the bearing platform fixedly connected to the lifting assembly via the angle steel.

[0011] In some disclosures, the flexible transmission unit includes a first chain and a first sprocket. The inner side of the support leg is rotatably connected to a plurality of first sprockets, which are vertically distributed. A first chain that meshes with the first sprocket is provided on the outer side of the first sprocket. The first sprocket at the top is connected to the drive unit.

[0012] In some disclosures, the bearing platform includes a rigid frame, support rods, and rollers. The rigid frame is slidably arranged on the inner side of multiple support legs, and the side of the rigid frame is parallel to the rectangle formed by the multiple support legs. Multiple support rods are equidistantly arranged on the inner side of the bearing platform along the length direction, and multiple rollers are equidistantly fixed on the outer wall of the support rods, and the uppermost ends of the multiple rollers are located in the same plane.

[0013] In some disclosures, the support platform includes rollers equidistantly arranged on a support rod, wherein the diameter of the rollers is larger than the diameter of the support rod, and multiple rollers have the same diameter.

[0014] In some disclosures, the rigid guide assembly includes guide rods and guide grooves, with guide rods fixed to the sidewalls of the plurality of support legs, and guide grooves adapted to the guide rods fixed to the sidewalls of the bearing platform.

[0015] In some disclosures, at least two second sprockets are fixed to the end of the support rod, and adjacent support rods are connected by second chains. Through the cooperation of multiple second chains and second sprockets, when one support rod rotates, it can drive multiple support rods to rotate synchronously.

[0016] In some disclosures, tensioners are provided on one side of the first chain and one side of the second chain, respectively.

[0017] The explanations of the nouns, conjunctions, or adjectives used in the above technical solutions are as follows:

[0018] A fixed connection refers to a connection in which parts or components are fixed in place and there is no relative movement between them;

[0019] A rotating connection is a connection between parts that allows the parts to rotate relative to each other.

[0020] Threaded connections are a type of detachable fixed connection with advantages such as simple structure, reliable connection, and convenient assembly and disassembly. They are widely used in mechanical engineering and connection structure fields.

[0021] A sliding connection is a connection between parts that allows the parts to slide against each other.

[0022] The beneficial effects of this disclosure are:

[0023] 1. By dividing the carrying platform into multiple control zones along its length and configuring independent lifting components for each zone, the lifting force distribution becomes more uniform, and the stability of the carrying platform's ascent is improved. Furthermore, the multiple lifting components enhance the carrying strength of the carrying platform. When the weights at both ends of the carrying platform are not parallel, the lifting component near the feed inlet remains vertically aligned with the marble slab, thus providing stable support for the carrying platform.

[0024] 2. At the same time, rigid guide components are set around the bearing platform in the same direction as the lifting of the flexible transmission unit to ensure that the bearing platform moves in a parallel state, thereby reducing the tilting of the platform along the width direction and the diagonal twisting caused by asynchronous lifting.

[0025] 3. The drive units of multiple lifting components are coordinated by the same control system, ensuring synchronized operation from an electrical perspective. When slight asynchrony occurs between drive units due to response delays, load differences, or other reasons, the flexible transmission unit can absorb temporary stroke or force differences through its elastic deformation, providing mechanical buffering and adaptive compensation for the system. The cooperation between the rigid guide components and the flexible transmission unit not only ensures the overall guiding accuracy of the platform but also reduces structural overload, internal stress concentration, or drive conflicts that may occur in a purely rigid lifting structure when multiple drive sources are asynchronous, thereby improving and increasing the smoothness of the load-bearing platform. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this disclosure;

[0028] Figure 2 This is a schematic diagram of the connection structure between the lifting component and the support frame according to an embodiment of this disclosure;

[0029] Figure 3 This is a schematic diagram of the overall structure of the support frame according to an embodiment of the present disclosure;

[0030] Figure 4 This is a schematic diagram of the overall structure of the carrier platform according to an embodiment of this disclosure;

[0031] Figure 5 This is a schematic diagram of the connection structure between the support rod and the roller according to an embodiment of the present disclosure.

[0032] In the diagram: 1. Support frame; 101. Support leg; 2. Flexible transmission unit; 21. First chain; 22. First sprocket; 3. Drive unit; 4. Rigid guide assembly; 41. Guide rod; 42. Guide groove; 5. Bearing platform; 51. Rigid frame; 52. Support rod; 53. Roller; 54. Second chain; 55. Second sprocket; 511. Angle steel. Detailed Implementation

[0033] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0034] Please refer to Figures 1 to 5 A marble slab transport and lifting structure includes: a support platform 5 for supporting materials to be transferred;

[0035] At least two sets of lifting components, each set of lifting components includes at least two flexible transmission parts 2 arranged at intervals along the width direction of the bearing platform 5, and a drive part 3 for driving the flexible transmission parts 2 to lift synchronously.

[0036] Among them, the flexible transmission part 2 in different lifting components is arranged along the length direction of the bearing platform 5;

[0037] The drive unit 3 of multiple lifting components is electrically connected to the same control system so that multiple flexible transmission units 2 can operate synchronously, and the bearing platform 5 is provided with a rigid guide component 4 in the vertical direction, which drives the bearing platform 5 to rise and fall as a whole through the rigid guide device.

[0038] The support platform 5 is divided into at least two control zones along its length, each zone being controlled by a lifting assembly. Each lifting assembly contains at least two flexible transmission parts 2 (e.g., lifting points located on the left and right sides of the same end of the support platform 5) directly connected by a common drive unit 3. This makes all the flexible transmission parts 2 within the same lifting assembly a rigid moving body, with their lifting movements synchronized, thus ensuring the simultaneous lifting and lowering of lifting assemblies on the same side. This reduces the tilting of the support platform 5 along its diagonal, thereby reducing lateral displacement of the marble slab on its upper surface. Since the drying chamber's inlet is rectangular, tilting in the front-to-back direction has a relatively small impact on the marble entering the inlet.

[0039] A rigid guide component 4 is provided on the outer side of the support platform 5. The support platform is perpendicular to the rigid guide component 4. The rigid guide component 4 forces the support platform 5 to remain in a parallel state. When multiple drive units 3 are not started simultaneously, the support platform 5 is driven by the flexible transmission unit 2 to move along the rigid guide component 4. The elastic deformation of the flexible transmission unit 2 itself provides compensation when the two drive units 3 cannot drive synchronously. Thus, it can provide rigid guidance for the overall movement of the support platform 5, and also allow a certain degree of flexibility in the transmission link. This alleviates the structural overload or drive conflict that may be caused by absolutely rigid connection, so that when adjusting the height of the marble, the marble slab can be kept in a horizontal state and moved.

[0040] Multiple drive units 3 are controlled by a PLC control system, so that two drive units 3 can rotate the machine simultaneously.

[0041] Please refer to Figures 1 to 3 The support frame 1 includes multiple parallel support legs 101. The flexible transmission part 2 is located on the side of the support leg 101 close to the bearing platform 5. An angle steel 511 is fixed at the edge of the bearing platform 5. The bearing platform 5 is fixedly connected to the lifting assembly through the angle steel 511.

[0042] This support frame 1 serves as the load-bearing and force-transmitting skeleton of the entire lifting system. Its core working principle lies in achieving rigid support.

[0043] In use, multiple angle steels 511 on the bearing platform 5 are connected to the flexible transmission parts 2 on the inner side of multiple support legs 101 respectively. When the flexible transmission parts 2 move upward, they drive the bearing platform 5 to move upward through the angle steels 511. The multiple angle steels 511 and multiple flexible transmission parts 2 provide multiple upward moving forces to the bearing platform 5, distributing the huge lifting load to various positions on the edge of the platform, which helps to reduce stress concentration and reduce the risk of platform structural deformation.

[0044] Please refer to Figures 1 to 2 The flexible transmission unit 2 includes a first chain 21 and a first sprocket 22. Multiple first sprockets 22 are rotatably connected to the inner side of the support leg 101, and the multiple first sprockets 22 are vertically distributed. A first chain 21 that meshes with the first sprocket 22 is provided on the outer side of the first sprocket 22. The first sprocket 22 located at the top is connected to the drive unit 3.

[0045] The drive unit 3 includes a servo motor and a reducer, with the output shaft of the reducer being interference-fitted to the keyway of the first sprocket 22. The drive unit 3 can also be a single servo motor, where the output shaft of the servo motor is interference-fitted to the keyway of the first sprocket 22 to enable the first sprocket 22 to rotate. The method of driving the first sprocket 22 to rotate via a motor is well known to those skilled in the art and therefore need not be elaborated upon.

[0046] The flexible transmission unit 2 uses a chain connection. Compared to the lifting assembly, which consists of two electric telescopic rods, when the two electric telescopic rods are not driven simultaneously, stress concentration occurs at the connection between the rigid guide assembly 4 and the bearing platform 5. With the lifting assembly using a chain, when one set of lifting assemblies moves upward first, the second chain 54 in the other flexible transmission unit 2 is divided into two parts at the connection with the angle steel 511. The second chain 54 below the angle steel 511 is more taut than the second chain 54 above the angle steel 511. Utilizing the elastic deformation capacity of the second chain 54, the other lifting assembly, which starts later, can catch up during this period, allowing the final lifting force on the bearing platform 5 from both sides to be rebalanced and synchronized. This avoids the direct and instantaneous conversion of asynchronous errors into destructive mechanical internal stress, as is the case with rigid telescopic rods.

[0047] In some embodiments, the flexible transmission part 2 can be a belt drive and a rope drive, with the transmission wheels being a belt pulley and a rope pulley, and the flexible components being a transmission belt and a transmission rope.

[0048] Please refer to Figures 4 to 5 The bearing platform 5 includes a rigid frame 51, support rods 52 and rollers 53. The rigid frame 51 is slidably arranged on the inner side of multiple support legs 101, and the side of the rigid frame 51 is parallel to the rectangle formed by the multiple support legs 101. Multiple support rods 52 are equidistantly arranged on the inner side of the bearing platform 5 along the length direction, and multiple rollers 53 are equidistantly fixed on the outer wall of the support rods 52, and the uppermost ends of the multiple rollers 53 are located in the same plane.

[0049] In use, the marble slab is placed on the rollers 53 on the support platform 5. Since the rollers 53 have the same diameter, the lower end of the marble is tangent to the upper apex of the rollers 53. When the support rod 52 rotates, it drives the rollers 53 on the support rod 52 to rotate. The friction between the rollers 53 and the lower end of the marble is used to move the marble along the length of the support platform 5. When the height of the support platform 5 is parallel to the feed inlet of the specified layer height in the drying box, the support rod 52 drives the rollers 53 to rotate, and the rollers 53 are used to feed the marble into the drying box through the feed inlet of the drying box.

[0050] However, since each roller 53 is an independent constraint point that contacts the bottom surface of the marble, when the slab tends to deviate laterally, the edge of the marble will first contact the rims of several rollers 53 along the path ahead. Because the rollers 53 can rotate freely around their own axes, this contact does not significantly hinder the slab's movement, but generates a continuous, distributed lateral guiding force that "pushes" the slab back to its central trajectory. This is equivalent to arranging multiple sets of "automatic centering" guide points in the forward direction. Therefore, the matrix arrangement of rollers 53 can correct any deviation in the marble, improving the straightness of the path as the slab enters the drying chamber's feed inlet.

[0051] Please refer to Figures 4 to 5 The bearing platform 5 includes rollers 53 equidistantly arranged on the support rod 52, and the diameter of the rollers 53 is larger than the diameter of the support rod 52, and multiple rollers 53 have the same diameter.

[0052] Since the diameter of each roller 53 is larger than the diameter of the support rod 52 to which it is located, only the outer circumferential surface of the roller 53 contacts the lower surface of the marble. Compared to the support rod 52 directly contacting the lower end surface of the marble, this reduces the contact area between the load-bearing component and the lower end surface of the marble.

[0053] Please refer to Figures 2 to 3 The rigid guide assembly 4 includes a guide rod 41 and a guide groove 42. The side walls of the multiple support legs 101 are respectively fixed with guide rods 41, and the side walls of the bearing platform 5 are fixed with guide grooves 42 that are adapted to the guide rods 41.

[0054] In use, the guide rod 41 and the guide groove 42 cooperate to restrict the parallel upward movement of the bearing platform 5. The cross-section of the guide rod 41 can be concentric, rectangular, etc., and the guide rod 41 is set through the corresponding guide groove 42. The bearing platform 5 moves vertically along the guide rod 41 through the guide groove 42.

[0055] Please refer to Figure 4 At least two second sprockets 55 are fixed to the end of the support rod 52, and two adjacent support rods 52 are connected by a second chain 54. Through the cooperation of multiple second chains 54 and second sprockets 55, when one support rod 52 rotates, it can drive multiple support rods 52 to rotate synchronously.

[0056] Of course, in some embodiments, a rubber belt and a drive wheel are used instead of the second chain 54 and the second sprocket 55. However, since the temperature of marble is high after drying, and the rubber belt has weak high temperature resistance, using the second chain 54 and the second sprocket 55 to mesh and drive can increase the service life of the bearing platform 5.

[0057] Tensioners are provided on one side of the first chain 21 and one side of the second chain 54 respectively;

[0058] The tensioner is the core holding device of the belt and chain drive system. It automatically adjusts the tension of the chain through elastic or hydraulic structure. The tensioner on the outside of the chain controls the tension of the chain, which is a conventional technology and will not be described in detail here.

[0059] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0060] The foregoing has shown and described the basic principles, main features, and advantages of this disclosure. Those skilled in the art should understand that this disclosure is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this disclosure. Various changes and modifications can be made to this disclosure without departing from its spirit and scope, and all such changes and modifications fall within the scope of this disclosure as claimed.

Claims

1. A marble slab transport and lifting structure, characterized in that, include: The carrying platform (5) is used to support materials to be transferred; At least two sets of lifting components, each set of lifting components includes at least two flexible transmission parts (2) arranged at intervals along the width direction of the bearing platform (5), and a drive part (3) for driving the flexible transmission parts (2) to rise and fall synchronously; Among them, the flexible transmission parts (2) in different lifting components are arranged along the length direction of the bearing platform (5); The drive units (3) of the multiple lifting components are electrically connected to the same control system so that the multiple flexible transmission units (2) operate synchronously, and the bearing platform (5) is provided with a rigid guide component (4) in the vertical direction, which drives the bearing platform (5) to rise and fall as a whole through the rigid guide device.

2. The marble slab transport and lifting structure according to claim 1, characterized in that, A support frame (1) is slidably provided on the outer side of the bearing platform (5). The support frame (1) includes multiple parallel support legs (101). The flexible transmission part (2) is located on the side of the support leg (101) close to the bearing platform (5). An angle steel (511) is fixed at the edge of the bearing platform (5). The bearing platform (5) is fixedly connected to the lifting assembly through the angle steel (511).

3. The marble slab transport and lifting structure according to claim 2, characterized in that, The flexible transmission part (2) includes a first chain (21) and a first sprocket (22). The inner side of the support leg (101) is rotatably connected to a plurality of first sprockets (22), and the plurality of first sprockets (22) are vertically distributed. A first chain (21) that meshes with the first sprocket (22) is provided on the outer side of the first sprocket (22). The first sprocket (22) located at the top is connected to the drive part (3).

4. The marble slab transport and lifting structure according to claim 3, characterized in that, The bearing platform (5) includes a rigid frame (51), support rods (52) and rollers (53). The rigid frame (51) is slidably arranged on the inner side of multiple support legs (101), and the side of the rigid frame (51) is parallel to the rectangle formed by the multiple support legs (101). Multiple support rods (52) are equidistantly arranged on the inner side of the bearing platform (5) along the length direction, and multiple rollers (53) are equidistantly fixed on the outer wall of the support rods (52), and the uppermost ends of the multiple rollers (53) are located in the same plane.

5. A marble slab transport and lifting structure according to claim 4, characterized in that, The bearing platform (5) includes rollers (53) equidistantly arranged on the support rod (52), and the diameter of the rollers (53) is larger than the diameter of the support rod (52), and multiple rollers (53) have the same diameter.

6. A marble slab transport and lifting structure according to claim 2, characterized in that, The rigid guide assembly (4) includes a guide rod (41) and a guide groove (42). The side walls of the plurality of support legs (101) are respectively fixed with guide rods (41), and the side walls of the bearing platform (5) are fixed with guide grooves (42) adapted to the guide rods (41).

7. A marble slab transport and lifting structure according to claim 5, characterized in that, At least two second sprockets (55) are fixed to the end of the support rod (52), and two adjacent support rods (52) are connected by a second chain (54). Through the cooperation of multiple second chains (54) and second sprockets (55), when one of the support rods (52) rotates, it can drive multiple support rods (52) to rotate synchronously.

8. A marble slab transport and lifting structure according to claim 7, characterized in that, Tensioners are provided on one side of the first chain (21) and one side of the second chain (54).

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