Underground conveying line for integrally supporting ceramic tiles
By installing an underground roller conveyor and bracket structure for the whole-pallet tile conveying line, the transportation problem caused by the long distance between the tile warehouse and the production workshop has been solved, achieving efficient and automated transfer and reducing the labor intensity of workers and production costs.
Patent Information
- Application Number
- CN202511514449.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-22
- Publication Date
- 2026-01-06
AI Technical Summary
In current tile production, the distance between the tile warehouse and the production workshop is relatively far, resulting in long transportation distances, easy damage, and low efficiency of manual transfer, which increases the labor intensity of workers and production costs.
An underground conveyor line is used, which utilizes a roller conveyor mechanism and a bracket structure to realize the automatic transfer of whole trays of tiles. Combined with a double-layer conveyor channel and a lifting mechanism, the conveying efficiency is improved and the labor intensity of workers and production costs are reduced.
It enables efficient and automated transfer of tiles, reduces breakage, improves production efficiency and equipment utilization, saves floor space, and reduces labor intensity and production costs.
Smart Images
Figure CN121269271A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of ceramic tile conveying equipment technology, and more particularly to an underground conveying line for a whole tray of ceramic tiles. Background Technology
[0002] In the existing ceramics industry, due to space limitations, tile warehouses are usually some distance away from production workshops. The product warehousing process requires a large area of space and needs to bypass the tile production line equipment. Tile damage often occurs due to long transportation distances and bumpy roads. Furthermore, long-distance conveyor equipment is prone to failure and requires maintenance, resulting in low actual work efficiency.
[0003] To prevent damage during logistics after the tiles are packaged, wooden pallets are usually used to support several tile packages. Specifically, several tile packages and wooden pallets are moved together as a whole pallet of tiles. In the current technology, the transfer of whole pallets of tiles is usually carried out by forklifts, which is labor-intensive and inefficient for workers. Summary of the Invention
[0004] To address the aforementioned shortcomings, the present invention aims to propose an underground conveyor line for whole trays of ceramic tiles, thereby solving the problem.
[0005] To achieve this objective, the present invention adopts the following technical solution: An underground conveying line for a whole tray of ceramic tiles includes a tunnel, a roller conveying mechanism, at least two first lifting mechanisms, and several trays. The tunnel is located below the workshop floor, and the roller conveying mechanism passes through the tunnel. The two first lifting mechanisms are respectively located at both ends of the tunnel and are respectively connected to both ends of the roller conveying mechanism. The first lifting mechanisms are used to pass trays into or out of the roller conveying mechanism. The bracket is used to support the entire tray of tiles; The roller conveying mechanism is provided with a first conveying channel and a second conveying channel. The first conveying channel is located above the second conveying channel. The conveying direction of the first conveying channel is the same as the direction of the tile entering the warehouse. The first conveying channel is used to convey the bracket and the whole tray of tiles on it. The conveying direction of the second conveying channel is opposite to that of the first conveying channel. The second conveying channel is used to return the bracket.
[0006] Preferably, it also includes at least two ground conveying mechanisms, the length of which is at least twice the length of the bracket. Each ground conveying mechanism corresponds to one of the first lifting mechanisms, and one end of each ground conveying mechanism is connected to the first lifting mechanism. Each ground conveying mechanism is used to transfer a whole tray of tiles into or out of the first lifting mechanism to which it is connected.
[0007] Preferably, both the first lifting mechanism and the ground conveying mechanism are provided with upper and lower double-layer conveying platforms. When the first lifting mechanism is in a high position, the heights of the upper and lower double-layer conveying platforms of the ground conveying mechanism and the first lifting mechanism are the same. When the first lifting mechanism is in a low position, the heights of the upper and lower double-layer conveying platforms of the first lifting mechanism correspond to the first conveying channel and the second conveying channel, respectively.
[0008] Preferably, it further includes at least two second lifting mechanisms, each corresponding to one of the ground conveying mechanisms, and the second lifting mechanism is connected to the end of the ground conveying mechanism away from the first lifting mechanism.
[0009] Preferably, the first lifting mechanism includes a fixed bracket, a rectangular lifting platform, and at least two hydraulic cylinders. The fixed bracket is provided with four guide rails in the vertical direction. The rectangular lifting platform is provided with stabilizing parts at its four corners, arranged in a group of one above the other. The stabilizing parts are slidably embedded in the guide rails. The hydraulic cylinders are fixed to the bottom of the tunnel. The telescopic ends of the two hydraulic cylinders are respectively connected to the opposite sides of the rectangular lifting platform. The hydraulic cylinders are used to drive the rectangular lifting platform to reciprocate in the vertical direction.
[0010] Preferably, the bracket is made of welded iron square tubing. The bracket includes a rectangular outer frame, at least one longitudinal beam, and several transverse beams. The longitudinal beam is arranged along the length of the rectangular outer frame, and the transverse beams are arranged along the width of the rectangular outer frame. The two ends of the longitudinal beam are respectively connected to the opposite sides of the rectangular outer frame, and the two ends of the transverse beams are respectively connected to the other opposite sides of the rectangular outer frame. The several transverse beams are arranged at equal intervals along the length of the longitudinal beam. The top surfaces of the rectangular outer frame, the longitudinal beam, and the transverse beams are arranged on the same plane.
[0011] Preferably, the bracket is 1.6m long, and the first lifting mechanism is 1.6m long along the direction of the tile conveying into the warehouse.
[0012] Preferably, both the input and output of the first lifting mechanism are conveyed by rollers.
[0013] Preferably, the surface of the tunnel is made of reinforced concrete with a thickness of 0.6m, the height difference between the bottom of the tunnel and the workshop floor is 3~3.6m, the height of the tunnel interior is 2.5~3m and the width is 2.5~3m, the height of the first conveying channel is 1.4~2m, and the height of the second conveying channel is 0.2~0.3m.
[0014] Preferably, maintenance stairs are provided at both ends of the tunnel, and maintenance passages are provided on both sides of the roller conveyor mechanism. The maintenance stairs connect the workshop floor and the maintenance passages.
[0015] The technical solution provided by this invention may include the following beneficial effects: 1. The manual forklift transport on the ground is replaced with an underground automated transport system. A roller conveyor mechanism is selected, and a bracket is added as a transfer structure to address the characteristics of the wooden pallets in a full pallet of tiles. This avoids direct contact between the wooden pallets and the rollers, and prevents the rotating rollers from affecting the surrounding structure of the wooden pallets. This achieves automated transport of full pallets of tiles, greatly improving production efficiency, reducing the labor intensity of workers, and effectively reducing production costs. The roller conveyor mechanism is a commonly used transport device in the ceramic production industry. It can be disassembled from existing idle production lines and installed underground, improving the utilization rate of the equipment.
[0016] 2. By setting up a double-layer structure with a first conveyor channel and a second conveyor channel, with the upper layer serving as the direction for conveying tiles into the warehouse and the lower layer serving as the direction for conveying empty trays back to the warehouse, the overall conveying efficiency is improved and the floor space is saved. The underground conveyor line improves the utilization rate of the workshop. Underground transportation is shorter, more efficient, and eliminates the need to construct steel platforms to consider load-bearing capacity, thus saving more money.
[0017] 3. At least two trays can be placed on the ground conveying mechanism at the same time, which facilitates multiple forklifts to pick up and put down at the same time, thus improving conveying efficiency.
[0018] 4. Both the ground conveying mechanism and the first lifting mechanism adopt a double-layer structure of upper and lower double-layer conveying platforms. Combined with the double-layer structure of the first and second conveying channels in the roller conveying mechanism, a complete upper-layer tile warehousing conveying process and a lower-layer bracket return conveying process are realized, further improving conveying efficiency.
[0019] 5. Once the pallet carrying a full pallet of tiles reaches the upper conveyor platform of the ground conveyor mechanism near one end of the warehouse, the forklift removes the pallet. The empty pallet is then transported by the upper conveyor platform to the second lifting mechanism, which subsequently lowers the empty pallet to the lower conveyor platform of the same ground conveyor mechanism, allowing the empty pallet to enter the return transport process. Furthermore, the second lifting mechanism can also serve as a location for the forklift to pick up and place full pallets of tiles, further improving conveying efficiency in conjunction with the forklift.
[0020] 6. The rectangular frame, longitudinal beams, and transverse beams on the bracket can distribute the force on the wooden tray, improve the stability of tile conveying, and reduce tile transport losses. A conveying plane is formed by several rollers spaced at intervals, which, together with the bracket, achieves smooth tile conveying.
[0021] 7. The tunnel uses a reinforced concrete structure, which is more durable, lower in cost, and requires no daily maintenance. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention.
[0023] Figure 2 This is a three-dimensional structural diagram of an embodiment of the present invention.
[0024] Figure 3 for Figure 2 Enlarged view of point A in the middle.
[0025] Figure 4 for Figure 2 Enlarged view of point B in the middle.
[0026] The components include: tunnel 1, roller conveyor mechanism 2, first conveyor channel 21, second conveyor channel 22, first lifting mechanism 3, fixed bracket 31, guide rail 311, rectangular lifting platform 32, stabilizing part 321, hydraulic cylinder 33, bracket 4, rectangular outer frame 41, longitudinal beam 42, cross beam 43, workshop floor 5, whole tray of tiles 6, ground conveyor mechanism 7, and second lifting mechanism 8. Detailed Implementation
[0027] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0028] In the description of this invention, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish and describe features, without any order or emphasis.
[0029] In the description of this invention, unless otherwise stated, "a plurality of" means two or more.
[0030] 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0031] The embodiments of the present invention are described below with reference to the accompanying drawings.
[0032] An underground conveying line for whole trays of ceramic tiles includes a tunnel 1, a roller conveying mechanism 2, at least two first lifting mechanisms 3, and several brackets 4. The tunnel 1 is located below the workshop floor 5. The roller conveying mechanism 2 passes through the tunnel 1. The two first lifting mechanisms 3 are respectively located at both ends of the tunnel 1 and are respectively connected to both ends of the roller conveying mechanism 2. The first lifting mechanisms 3 are used to pass the brackets 4 into or out of the roller conveying mechanism 2. The bracket 4 is used to support the entire tray of ceramic tiles 6; The roller conveying mechanism 2 is provided with a first conveying channel 21 and a second conveying channel 22. The first conveying channel 21 is located above the second conveying channel 22. The conveying direction of the first conveying channel 21 is the same as the direction of the tile entering the warehouse. The first conveying channel 21 is used to convey the bracket 4 and the whole tray of tiles 6 on it. The conveying direction of the second conveying channel 22 is opposite to the conveying direction of the first conveying channel 21. The second conveying channel 22 is used to return the bracket 4.
[0033] To facilitate forklift transport, the packaged tiles are carried on wooden pallets. The tiles and pallets are moved together as a single pallet of tiles (6). Since the wooden pallets need to be shipped with the tiles, and are composed of several wooden planks, they are designed as disposable consumables to reduce costs. During transport, if external forces are applied unevenly to the pallets, the pallet's structure can easily loosen, leading to instability in the overall structure of the pallet and potential damage during subsequent transfers. Therefore, in existing technologies, the transfer of pallets of tiles typically uses forklifts, which is labor-intensive and inefficient for workers.
[0034] This invention proposes an underground conveyor line for pallets of ceramic tiles, replacing manual forklift transport on the ground with automated underground transport. A roller conveyor mechanism is used, and considering the characteristics of the wooden pallets in the pallets, a bracket is added as a transfer structure to prevent direct contact between the wooden pallets and the rollers, thus avoiding the impact of several rotating rollers on the surrounding structure of the wooden pallets. This achieves automated transport of pallets of ceramic tiles, significantly improving production efficiency, reducing labor intensity, and effectively lowering production costs. The roller conveyor mechanism is a commonly used transport device in the ceramic production industry, and it can be disassembled from existing idle production lines and installed underground, improving equipment utilization.
[0035] In practical use, workers control a forklift to lift a wooden pallet and place the entire pallet of tiles 6 onto a bracket 4 on a first lifting mechanism 3 located away from the tile warehouse. The first lifting mechanism 3 then transfers the bracket 4 and the entire pallet of tiles 6 onto a first conveying channel 21. A roller conveyor 2 then transports the bracket 4 to the first lifting mechanism 3 located near the tile warehouse. The first lifting mechanism 3 then transfers the bracket 4 and the entire pallet of tiles 6 out, where another forklift in the tile warehouse lifts the wooden pallet and sends the entire pallet of tiles 6 into the tile warehouse. The empty bracket 4 is then transferred by the first lifting mechanism 3 into a second conveying channel 22, and then back to the first lifting mechanism 3 located away from the tile warehouse by the roller conveyor 2. This cycle is repeated to achieve the inbound transport of the entire pallet of tiles.
[0036] like Figure 1 and Figure 2 As shown, by setting up a double-layer structure with a first conveyor channel 21 and a second conveyor channel 22, the upper layer serves as the direction for conveying tiles into the warehouse, and the lower layer serves as the direction for the return conveying of empty trays 4, improving overall conveying efficiency and saving floor space. The underground conveyor line improves workshop utilization. Underground transportation is shorter, more efficient, and eliminates the need to construct steel platforms to consider load-bearing capacity, thus saving costs.
[0037] Preferably, it also includes at least two ground conveying mechanisms 7, the length of which is at least twice the length of the bracket 4. The ground conveying mechanism 7 corresponds one-to-one with the first lifting mechanism 3. One end of the ground conveying mechanism 7 is connected to the first lifting mechanism 3. The ground conveying mechanism 7 is used to transfer the entire tray of tiles 6 into or out of the first lifting mechanism 3 to which it is connected.
[0038] At least two brackets 4 can be placed on the ground conveying mechanism 7 at the same time, which facilitates multiple forklifts to pick up and put down at the same time, thus improving conveying efficiency.
[0039] Preferably, both the first lifting mechanism 3 and the ground conveying mechanism 7 are provided with upper and lower double-layer conveying platforms. When the first lifting mechanism 3 is in a high position, the heights of the upper and lower double-layer conveying platforms of the ground conveying mechanism 7 and the first lifting mechanism 3 are the same. When the first lifting mechanism 3 is in a low position, the heights of the upper and lower double-layer conveying platforms of the first lifting mechanism 3 correspond to the first conveying channel 21 and the second conveying channel 22, respectively.
[0040] Both the ground conveying mechanism 7 and the first lifting mechanism 3 adopt a double-layer structure of upper and lower double-layer conveying platforms. Together with the double-layer structure of the first conveying channel 21 and the second conveying channel 22 in the roller conveying mechanism 2, a complete upper-layer tile warehousing conveying process and a lower-layer bracket 4 return conveying process are realized, further improving conveying efficiency.
[0041] Preferably, it also includes at least two second lifting mechanisms 8, each corresponding to one of the ground conveying mechanisms 7, and the second lifting mechanism 8 is connected to the end of the ground conveying mechanism 7 away from the first lifting mechanism 3.
[0042] Once the pallet 4, carrying a full pallet of tiles 6, reaches the upper conveying platform of the ground conveying mechanism 7 near one end of the warehouse, the forklift removes the pallet of tiles 6. The empty pallet 4 is then transported by the upper conveying platform to the second lifting mechanism 8. Subsequently, the second lifting mechanism 8 lowers the empty pallet 4 to the lower conveying platform of the same ground conveying mechanism 7, allowing the empty pallet 4 to enter the return transport process. Furthermore, the second lifting mechanism 8 can also serve as a location for the forklift to pick up and place the full pallet of tiles 6, further improving conveying efficiency in conjunction with the forklift.
[0043] Preferably, the first lifting mechanism 3 includes a fixed bracket 31, a rectangular lifting platform 32, and at least two hydraulic cylinders 33. The fixed bracket 31 is provided with four guide rails 311 in the vertical direction. The rectangular lifting platform 32 is provided with stabilizing parts 321 at its four corners. The stabilizing parts 321 are arranged in a group, one above the other. The stabilizing parts 321 are slidably embedded in the guide rails 311. The hydraulic cylinders 33 are fixed to the bottom of the tunnel 1. The telescopic ends of the two hydraulic cylinders 33 are respectively connected to the opposite sides of the rectangular lifting platform 32. The hydraulic cylinders 33 are used to drive the rectangular lifting platform 32 to reciprocate in the vertical direction.
[0044] like Figure 3 As shown, a hydraulic drive structure is adopted, which is more precise and easier to maintain than a chain structure. This improves the lifting stability of the first lifting mechanism 3, avoids damage to the tiles during lifting, and increases the yield rate of the tiles.
[0045] Preferably, the bracket 4 is made of welded iron square tubing. The bracket 4 includes a rectangular outer frame 41, at least one longitudinal beam 42, and several transverse beams 43. The longitudinal beam 42 is arranged along the length direction of the rectangular outer frame 41, and the transverse beams 43 are arranged along the width direction of the rectangular outer frame 41. The two ends of the longitudinal beam 42 are respectively connected to the opposite sides of the rectangular outer frame 41, and the two ends of the transverse beams 43 are respectively connected to the other opposite sides of the rectangular outer frame 41. The several transverse beams 43 are arranged at equal intervals along the length direction of the longitudinal beam 42. The top surfaces of the rectangular outer frame 41, the longitudinal beam 42, and the transverse beams 43 are arranged on the same plane.
[0046] like Figure 4 As shown, the rectangular outer frame 41, longitudinal beam 42 and transverse beam 43 on the bracket 4 can distribute the force on the wooden support, improve the stability of tile conveying, and reduce tile transportation losses.
[0047] Preferably, the bracket 4 is 1.6m long, and the first lifting mechanism 3 is 1.6m long along the direction of conveying the tiles into the warehouse.
[0048] In one embodiment, the first lifting mechanism 3 can move one tray 4 at a time. The wooden trays for the tiles are available in two sizes: 800mm×800mm and 750mm×1500mm. When the wooden tray is 800mm×800mm, the tray 4 can hold two trays of tiles; when the wooden tray is 750mm×1500mm, the tray 4 can hold one tray of tiles. The first lifting mechanism 3 moves one tray 4 per minute, with each tray averaging 120m. 2 The maximum daily output is 172,800 square meters, but the actual production line output is only 45,000 square meters. 2 This can meet production demands.
[0049] Preferably, both the input and output of the first lifting mechanism 3 are achieved using roller conveyors.
[0050] Preferably, both the ground conveying mechanism 7 and the second lifting mechanism 8 employ roller conveying.
[0051] A conveying plane is formed by several rollers spaced at intervals, which, together with the bracket 4, enables stable conveying of tiles. In a specific embodiment, the rollers are electric rollers. Compared with conveyor lines using C-belts, wide belts, or chain drives, roller conveyors offer better stability, durability, and load-bearing capacity. The attached drawings only show a schematic diagram of the electric rollers; the electrical connection structures and control devices involved are not shown in the drawings. The electric roller conveyors involved are all existing technologies and will not be described in detail here. It is sufficient to achieve synchronous rotation of several rollers to move the items on them.
[0052] Preferably, the surface of the tunnel 1 is made of reinforced concrete with a thickness of 0.6m, the height difference between the bottom of the tunnel 1 and the workshop ground 5 is 3~3.6m, the internal height of the tunnel 1 is 2.5~3m and the width is 2.5~3m, the height of the first conveying channel 21 is 1.4~2m, and the height of the second conveying channel 22 is 0.2~0.3m.
[0053] Tunnel 1 utilizes a reinforced concrete structure, which is more durable, lower in cost, and requires no routine maintenance. Specifically, the height of the first conveying channel 21 of the roller conveyor mechanism 2 is matched to the height of a full pallet of tiles 6, and the height of the second conveying channel 22 is matched to the height of a wooden pallet. Including the support height of the roller conveyor mechanism 2, the required depth of Tunnel 1 is 3-3.6m. In contrast, existing technologies using elevated steel structures for tile storage, which require an overall height exceeding 5 meters due to the intersection of the conveying direction with ground equipment and the need to avoid forklifts and personnel access, also present corrosion risks and require ongoing maintenance, resulting in high operating costs.
[0054] Preferably, maintenance stairs are provided at both ends of the tunnel 1, and maintenance passages are provided on both sides of the roller conveyor mechanism 2. The maintenance stairs connect the workshop floor 5 and the maintenance passages.
[0055] Tunnel 1 is equipped with maintenance stairs and inspection passages to facilitate personnel access to tunnel 1 for equipment maintenance.
[0056] Other configurations and operations according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.
[0057] In the description of this specification, references to terms such as "embodiment," "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 the invention. In this specification, 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.
[0058] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims
1. An underground conveyor line for a whole tray of ceramic tiles, characterized in that: The system includes a tunnel, a roller conveyor mechanism, at least two first lifting mechanisms, and several brackets. The tunnel is located below the workshop floor, and the roller conveyor mechanism passes through the tunnel. The two first lifting mechanisms are respectively located at both ends of the tunnel and are respectively connected to both ends of the roller conveyor mechanism. The first lifting mechanisms are used to pass the brackets into or out of the roller conveyor mechanism. The bracket is used to support the entire tray of tiles; The roller conveying mechanism is provided with a first conveying channel and a second conveying channel. The first conveying channel is located above the second conveying channel. The conveying direction of the first conveying channel is the same as the direction of the tile entering the warehouse. The first conveying channel is used to convey the bracket and the whole tray of tiles on it. The conveying direction of the second conveying channel is opposite to that of the first conveying channel. The second conveying channel is used to return the bracket.
2. The underground conveying line for a whole tray of ceramic tiles according to claim 1, characterized in that: It also includes at least two ground conveying mechanisms, the length of which is at least twice the length of the bracket. Each ground conveying mechanism corresponds to one of the first lifting mechanisms. One end of each ground conveying mechanism is connected to the first lifting mechanism. Each ground conveying mechanism is used to transfer a whole tray of tiles into or out of the first lifting mechanism to which it is connected.
3. The underground conveying line for a whole tray of ceramic tiles according to claim 2, characterized in that: Both the first lifting mechanism and the ground conveying mechanism are equipped with upper and lower double-layer conveying platforms. When the first lifting mechanism is in a high position, the heights of the upper and lower double-layer conveying platforms of the ground conveying mechanism and the first lifting mechanism are the same. When the first lifting mechanism is in a low position, the heights of the upper and lower double-layer conveying platforms of the first lifting mechanism correspond to the first conveying channel and the second conveying channel, respectively.
4. The underground conveying line for a whole tray of ceramic tiles according to claim 1, characterized in that: It also includes at least two second lifting mechanisms, each corresponding to one of the ground conveying mechanisms, and the second lifting mechanism is connected to the end of the ground conveying mechanism away from the first lifting mechanism.
5. The underground conveying line for a whole tray of ceramic tiles according to claim 1, characterized in that: The first lifting mechanism includes a fixed bracket, a rectangular lifting platform, and at least two hydraulic cylinders. The fixed bracket is provided with four guide rails in the vertical direction. The rectangular lifting platform is provided with stabilizing parts at its four corners. The stabilizing parts are arranged in a group, one above the other. The stabilizing parts are slidably embedded in the guide rails. The hydraulic cylinders are fixed to the bottom of the tunnel. The telescopic ends of the two hydraulic cylinders are respectively connected to the opposite sides of the rectangular lifting platform. The hydraulic cylinders are used to drive the rectangular lifting platform to reciprocate in the vertical direction.
6. The underground conveying line for a whole tray of ceramic tiles according to claim 1, characterized in that: The bracket is made of welded iron square tubing. The bracket includes a rectangular outer frame, at least one longitudinal beam and several transverse beams. The longitudinal beam is arranged along the length of the rectangular outer frame, and the transverse beams are arranged along the width of the rectangular outer frame. The two ends of the longitudinal beam are respectively connected to the opposite sides of the rectangular outer frame, and the two ends of the transverse beams are respectively connected to the other opposite sides of the rectangular outer frame. The several transverse beams are arranged at equal intervals along the length of the longitudinal beam. The top surfaces of the rectangular outer frame, the longitudinal beam and the transverse beams are arranged on the same plane.
7. The underground conveying line for a whole tray of ceramic tiles according to claim 1, characterized in that: The bracket is 1.6m long, and the first lifting mechanism is 1.6m long along the direction of the tile conveying into the warehouse.
8. The underground conveying line for a whole tray of ceramic tiles according to claim 1, characterized in that: The input and output of the first lifting mechanism both use roller conveyors.
9. The underground conveying line for a whole tray of ceramic tiles according to claim 1, characterized in that: The surface of the tunnel is made of reinforced concrete with a thickness of 0.6m. The height difference between the bottom of the tunnel and the workshop floor is 3~3.6m. The internal height of the tunnel is 2.5~3m and the width is 2.5~3m. The height of the first conveying channel is 1.4~2m and the height of the second conveying channel is 0.2~0.3m.
10. An underground conveying line for a whole tray of ceramic tiles according to any one of claims 1-9, characterized in that: Maintenance stairs are provided at both ends of the tunnel, and maintenance passages are provided on both sides of the roller conveyor mechanism. The maintenance stairs connect the workshop floor and the maintenance passages.