A tobacco leaf elevatable intensive curing barn

Abstract

The application discloses a tobacco leaf liftable dense curing barn, which comprises a curing barn frame arranged in a barn body, a tobacco clamp supporting device arranged in the curing barn frame, the tobacco clamp supporting device comprising a bottommost layer tobacco clamp supporting frame, a second layer tobacco clamp supporting frame and a third layer tobacco clamp supporting frame arranged horizontally in sequence from bottom to top, a lifting transmission system mounted at the top of the curing barn frame, the second layer tobacco clamp supporting frame and the third layer tobacco clamp supporting frame movably arranged in the curing barn frame, and steel wires of the lifting transmission system connected with the second layer tobacco clamp supporting frame and the third layer tobacco clamp supporting frame downwards; and a safety protection device arranged on the curing barn frame and a cam plate matched with the safety protection device arranged on the second layer tobacco clamp supporting frame and the third layer tobacco clamp supporting frame. The device is not needed to be manually operated in the middle during use, and the tobacco clamp can be automatically lifted and lowered, so that the work efficiency is improved and the labor intensity of workers is reduced.

Description

Technical Field

[0001] This invention belongs to the field of tobacco processing, and specifically relates to a height-adjustable dense curing barn for tobacco. Background Technology

[0002] Currently, most intensive tobacco curing barns use tobacco clips to hold and load tobacco leaves. During curing, the clips must be evenly placed on each layer of the loading racks according to the technical specifications for intensive curing barns. This work is primarily done manually, which is labor-intensive, inefficient, and involves the danger of climbing to heights. Therefore, a simple and easy-to-use intelligent tobacco clip loading and unloading device that replaces manual labor according to the technical specifications for intensive curing barns has become an urgent problem to be solved in the current tobacco loading and unloading process of intensive curing barns. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention aims to provide a height-adjustable, intensive tobacco curing barn. This device eliminates the need for manual operation during use; the raising and lowering of the tobacco clamps are automatic, requiring only the manual press of a remote control button. This significantly improves work efficiency and effectively reduces the labor intensity of workers.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A height-adjustable, intensive tobacco curing barn includes a curing barn frame housed within the barn. The curing barn frame contains tobacco clamp support devices, which consist of a bottom-level support frame, a second-level support frame, and a third-level support frame arranged horizontally from bottom to top. The second and third-level support frames are vertically movably installed within the curing barn frame. A lifting transmission system is installed at the top of the curing barn frame, with corresponding steel cables connected downwards to the second and third-level support frames. The curing barn frame also features a safety protection device, with cam plates on the second and third-level support frames that cooperate with the safety protection device. The lifting transmission system is also connected to a power unit. The lifting transmission system, power unit, and control system are all connected together.

[0005] Preferably, the curing barn frame includes longitudinal beams, transverse beams, and columns. Multiple transverse beams are vertically fixed between two longitudinal beams, and the columns are vertically fixed below the longitudinal beams and transverse beams, forming a rectangular frame structure. A row of short columns is vertically arranged in the middle of the lower part of the curing barn frame along the length of the longitudinal beams. The first layer of tobacco clip support plates is installed on both sides of the short columns and on the lower inner side of the two rows of columns, with the four first layer tobacco clip support plates on the same horizontal plane. The bottom layer of tobacco clip support frame is set on the first layer of tobacco clip support plate. Multiple longitudinal supports are symmetrically installed on the two rows of columns. The longitudinal supports are fixedly installed on the side walls of the columns on the same side that are close to each other. The longitudinal supports are divided into two layers. The safety protection device is installed on the longitudinal supports. Multiple transverse supports are symmetrically installed on the lower inner side of the columns. The transverse supports are used to support the second layer of tobacco clip support frame. The curing barn frame has two second layer tobacco clip support frames and a third layer of tobacco clip support frames in each longitudinal direction.

[0006] Preferably, each of the two cigarette clip support frames includes a support longitudinal beam, a support transverse beam, and a support column; the two support longitudinal beams and the two support transverse beams are perpendicular to each other to form a rectangular frame structure, and the support column is vertically fixed between the upper and lower rectangular frame structures.

[0007] Preferably, the second and third cigarette clip support frames are each equipped with first rollers on the sides near the four corners, and the two cigarette clip support frames roll up and down along the lateral sides of the two side columns via the first rollers. Preferably, the two cigarette clip support frames are equipped with roller mounting plates near the four corners and on the same side as the first rollers. Second rollers are mounted on the roller mounting plates, and the two cigarette clip support frames roll up and down along the longitudinal sides of the two side columns via the second rollers.

[0008] Preferably, the second and third cigarette clip support frames are respectively equipped with two first cam plates on their sides. The upper part of the first cam plate is a flat plate, one side of the lower part is a first rectangular opening, the upper part of the other side of the lower part is a second rectangular opening, and the lower part of the other side of the lower part is equipped with a first cam. The front and rear sides of the third cigarette clip support frame are also equipped with two second cam plates, and the middle of the second cam plate is equipped with a second cam. The middle of the flat plate of the upper part of the first cam plate of the third cigarette clip support frame is also equipped with a third cam.

[0009] Preferably, the safety protection device includes a main slider seat, a main slider, a main slider column, a vertical slider seat, a vertical slider, and a horizontal slider. Two main sliders are arranged side by side, and the two main sliders are fixedly connected and slidably installed in the main slider seat through a central shaft. The ends of the two main sliders extending out of the main slider seat are provided with a first inclined surface. The main slider spring seats fixed to both sides of the main slider extend outward through the first slot in the main slider seat. One end of the main spring is horizontally fixed to the outer wall of the main slider seat, and the other end is fixed to the outer end of the main slider seat. The main spring is a compression spring. A main slider column is vertically installed on the top of the main slider. The upper end of the main slider column moves outward through the second slot in the top of the main slider seat and is provided with a second inclined surface. The vertical slider seat is vertically fixed to the second slot in the top of the main slider seat by screws. The vertical slider is vertically slidably installed in the vertical slider seat. The lower end of the vertical slider is provided with a third inclined surface that cooperates with the second inclined surface. The vertical slider has a spring pin fixed to its side, which moves through the third slotted hole on the vertical slider seat and extends outward. A fixed pin is installed in the lower middle part of the vertical slider seat. The two ends of the vertical spring are fixed to the spring pin and the fixed pin, respectively. The vertical spring is a tension spring. A square hole is horizontally opened in the middle of the vertical slider. The square hole has a first inner inclined surface. A hollow square seat is horizontally provided on one side of the middle of the vertical slider seat. The horizontal slider slides horizontally in the hollow square seat through the square hole in the middle of the vertical slider. The horizontal slider has a second inner inclined surface that cooperates with the first inner inclined surface. The outer end of the horizontal slider that extends out of the hollow square seat has an abutting inclined surface that cooperates with the corresponding cam plate. The other end extends outward through the square hole and moves through the main slider seat, and is equipped with a spring baffle. A stop block is fixed on the side wall of the vertical slider seat. A horizontal spring is provided between the extended stop block and the spring baffle. The horizontal spring is a compression spring.

[0010] Preferably, the lifting transmission system has two sets, each connected to the second-layer cigarette clip support frame and the third-layer cigarette clip support frame respectively. The lifting transmission system includes a first left arched support, a second left arched support, a first right arched support, a second right arched support, and a middle arched support. The first and second left arched supports are horizontally installed on the crossbeam on the left side of the curing barn frame, the first and second right arched supports are horizontally installed on the crossbeam on the right side of the curing barn frame, and the middle arched support is installed on the crossbeam in the middle of the curing barn frame. The first and second left vertical pulleys are respectively installed below the first and second left arched supports, the first and second right vertical pulleys are respectively installed below the first and second right arched supports, and the first left and first right turning pulleys are respectively installed below the second left and second right arched supports. The double pulleys are horizontally installed on the middle column of the middle arched support. The pulleys include a left horizontal pulley and a right horizontal pulley; the wire rope fixing block is installed on the middle column of the central arch support; the hydraulic cylinder is horizontally installed on the middle column of the central arch support, and a piston rod pulley is installed on the end of the hydraulic piston rod of the hydraulic cylinder; the mounting plate is horizontally fixed on the side of the central arch support, the upper limit switch and the lower limit switch are installed on the mounting plate, and the limit switch strike rod that cooperates with the two limit switches is installed on the hydraulic piston rod; one end of the left wire rope is fixed to the wire rope fixing block, and the other end passes through the piston rod pulley, the left horizontal pulley, the first left turning pulley, the second left vertical pulley and the first left vertical pulley in sequence, and then vertically downwards to connect with the left side of the corresponding cigarette clip support frame; one end of the right wire rope is fixed to the second layer of wire rope fixing blocks, and the other end passes through the piston rod pulley, the right horizontal pulley, the first right turning pulley, the second right vertical pulley and the first right vertical pulley in sequence, and then vertically downwards to connect with the right side of the corresponding cigarette clip support frame.

[0011] Preferably, the power unit includes a hydraulic oil tank, an electric motor, an oil pump, a solenoid valve seat, a first solenoid valve, and a second solenoid valve. The electric motor, oil pump, and solenoid valve seat are installed above the hydraulic oil tank. The electric motor is connected to the oil pump. The inlet of the oil pump is connected to the hydraulic oil tank through an oil pipe. The outlet of the oil pump is connected to the solenoid valve seat. The first and second solenoid valves are installed on the solenoid valve seat. The inlets and outlets of the two solenoid valves are connected to the hydraulic oil interfaces before and after the corresponding hydraulic cylinders of the two sets of lifting transmission systems through oil pipes.

[0012] Preferably, the control system includes a control box, a controller, and a remote controller. The controller is installed inside the control box, and the control box is installed outside the drying room. The controller and the remote controller are equipped with corresponding control buttons.

[0013] The beneficial effects of this invention are as follows: 1. This invention, through the cooperation of a safety protection device and a cam plate, ensures that when the third-layer cigarette clip support frame moves upward, the upper main slider automatically extends after reaching its position to support the third-layer cigarette clip support frame and prevent it from falling. When the second-layer cigarette clip support frame moves upward, the latch automatically unlocks to extend the lower main slider. During descent, the safety protection device and cam plate work together to cause the second-layer cigarette clip support frame to first move upward a short distance to retract and lock the lower main slider (preparing for the descent of the third layer) before descending. Similarly, when the third-layer cigarette clip support frame descends, it first moves upward a short distance to retract and lock the upper main slider before descending. After descending a short distance, the main slider is unlocked to prepare for the next upward movement of the third-layer cigarette clip support frame. When the third-layer cigarette clip support frame descends to the second layer, the cam plate on the third layer unlocks the main slider of the second layer, preparing for the next upward movement of the second-layer cigarette clip support frame.

[0014] 2. The cigarette clip support frame of this invention is raised to the position and is in two safety protection states: one is that the main slider of the safety protection device supports it, and the other is that the hydraulic piston rod is locked. Even if the main slider fails, the piston rod moves, or the wire rope fails, the cigarette clip support frame will not fall, thereby significantly improving the safety of the device.

[0015] 3. By setting the first roller and the second roller, the present invention can not only effectively limit the up and down movement of the second layer cigarette clip support frame and the third layer cigarette clip support frame, but also effectively reduce the friction force when the second layer cigarette clip support frame and the third layer cigarette clip support frame move, thereby significantly improving the movement stability of the second layer cigarette clip support frame and the third layer cigarette clip support frame.

[0016] 4. In this invention, a partition is used at the upper part of the drying oven frame to separate the interior of the drying oven from the hydraulic cylinders, limit switches, etc. in the lifting transmission system, and a partition is used at the rear part of the drying oven frame to separate the interior of the drying oven from the control box and power unit, so as to prevent the influence of high temperature and high humidity on hydraulic and electrical components. Attached Figure Description

[0017] Figure 1 This is a structural diagram of the drying room frame of the present invention; Figure 2 This is a structural diagram of the second layer cigarette clip support frame of the present invention; Figure 3 This is a structural diagram of the third layer cigarette clip support frame of the present invention; Figure 4 This is a structural diagram of the first roller and the second roller of the present invention; Figure 5 This is a partial structural diagram of the second-layer cigarette clip support frame of the present invention; Figure 6 This is a partial structural diagram of the third-layer cigarette clip support frame of the present invention; Figure 7 This is a schematic diagram of the lifting transmission system of the present invention; Figure 8 This is a structural diagram of the first right-hand arched support of the present invention; Figure 9 This is a structural diagram of the second left arched support of the present invention; Figure 10 This is a structural diagram of the arched support in this invention; Figure 11 This is a structural diagram of the power unit of the present invention; Figure 12 This is a structural diagram of the safety protection device of the present invention; Figure 13 This is a schematic diagram showing the installation of the main slider, horizontal slider, and vertical slider of the present invention; Figure 14 This is a structural diagram of the control box of the present invention; Figure 15 This is a schematic diagram of the installation of the remote control button of the present invention. Detailed Implementation

[0018] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention.

[0019] The present invention proposes a high-density tobacco curing barn with adjustable height, including a curing barn frame 1 installed inside the barn. The curing barn frame 1 is equipped with tobacco clamp support devices. The tobacco clamp support devices include a bottom layer tobacco clamp support frame, a second layer tobacco clamp support frame 21 and a third layer tobacco clamp support frame 22 arranged horizontally from bottom to top. The two tobacco clamp support devices are installed vertically and vertically inside the curing barn frame 1.

[0020] Specifically, such as Figure 1As shown, the curing barn frame 1 includes longitudinal beams 101, transverse beams 102, and columns 103. Multiple transverse beams 102 are vertically fixed between two parallel longitudinal beams 101. The columns 103 are vertically fixed below the longitudinal beams 101 and transverse beams 102, forming a rectangular frame structure. A row of short columns 104 is vertically arranged in the middle below the curing barn frame 1 along the length of the longitudinal beams 101. First-layer tobacco clip support plates 107 are installed on both sides of the short columns 104 and on the inner sides of the two rows of columns 103, with the four first-layer tobacco clip support plates 107 on the same horizontal plane. The bottom layer tobacco clip support frame is located on the first-layer tobacco clip support plates 107. Multiple longitudinal supports 105 are symmetrically installed on the front and rear rows of columns 103. The longitudinal supports 105 are fixedly installed on the side walls of the columns 103 on the same side, close to each other. The longitudinal supports 105 are divided into two layers, with eight supports in each layer. Safety protection devices are installed on the longitudinal supports 105. Multiple horizontal supports 106 are symmetrically installed on the lower inner side of the upright 103, with four supports on each side of the upright 103. The horizontal supports 106 are used to support the second layer of tobacco clip support frame 21. The interior of the curing barn frame 1 has two second layer tobacco clip support frames 21 and three layer tobacco clip support frames 22 arranged longitudinally.

[0021] like Figure 2-3 As shown, both the second-layer cigarette clip support frame 21 and the third-layer cigarette clip support frame 22 include a support longitudinal beam 201, a support cross beam 202, and a support column 203; the two support longitudinal beams 201 and the two support cross beams 202 form a rectangular frame structure perpendicular to each other, and the support column 203 is vertically fixed between the upper and lower rectangular frame structures.

[0022] like Figure 4-6 As shown, first rollers 204 are installed on the sides of the second-layer cigarette clip support frame 21 and the third-layer cigarette clip support frame 22 near the four corners. The two cigarette clip support frames can roll up and down along the lateral sides of the two side columns 103 via the first rollers 204. L-shaped roller mounting plates 206 are installed on the sides of the two cigarette clip support frames near the four corners, on the same side as the first rollers 204. Second rollers 205 are installed on the roller mounting plates 206. The two cigarette clip support frames can roll up and down along the longitudinal sides of the two side columns 103 via the second rollers 205. By setting the first rollers 204 and the second rollers 205, not only can the up and down movement of the second-layer cigarette clip support frame 21 and the third-layer cigarette clip support frame 22 be effectively limited, but the friction force during the movement of the second-layer cigarette clip support frame 21 and the third-layer cigarette clip support frame 22 can also be effectively reduced, thereby significantly improving the movement stability of the second-layer cigarette clip support frame 21 and the third-layer cigarette clip support frame 22.

[0023] The second-layer cigarette clip support frame 21 and the third-layer cigarette clip support frame 22 are respectively equipped with two first cam plates 71. The upper part of the first cam plate 71 is a flat plate, one side of the lower part is a first rectangular opening, the upper part of the other side of the lower part is a second rectangular opening, and the lower part of the other side of the lower part is equipped with a first cam 711. The upper half of the flat plate of the first cam plate 71 of the third-layer cigarette clip support frame 22 is also equipped with a third cam 712. The front and rear sides of the third-layer cigarette clip support frame 22 are also equipped with two second cam plates 72, and the middle of the second cam plate 72 is equipped with a second cam 721.

[0024] like Figure 12-13 As shown, the drying room frame 1 is also equipped with a safety protection device. The cam plates installed on the two tobacco clip support frames cooperate with the safety protection device. The safety protection device includes a main slider seat 501, a main slider 502, a main slider column 503, a vertical slider seat 506, a vertical slider 507, and a horizontal slider 511. The bottom two sides of the main slider seat 501 are provided with mounting plates. The main slider seat 501 is fixed to the longitudinal support 105 by bolts through the mounting holes on the mounting plates.

[0025] Two main sliders 502 are arranged side by side, fixedly connected and slidably mounted in the main slider seat 501 by a central shaft. The ends of the two main sliders 502 extending out of the main slider seat 501 have a first inclined surface. Main slider spring seats 504, fixedly connected to both sides of the main sliders 502, extend outward through a first slot in the main slider seat 501. One end of a main spring 505 is horizontally fixed to the outer wall of the main slider seat 501, and the other end is fixed to the outer end of the main slider seat 501. The main spring 505 is a compression spring, allowing the main sliders 502 to slide horizontally within the main slider seat 501. When the main sliders 502 are not subjected to external force, they are in an extended state under the elastic force of the main spring 505. A main slider column 503 is vertically mounted on the top of the main sliders 502. The upper end of the main slider column 503 extends outward through a second slot in the top of the main slider seat 501 and has a second inclined surface. The vertical slider seat 506 is vertically fixed to the second slot at the top of the main slider seat 501 by screws. The vertical slider 507 is vertically slidably installed inside the vertical slider seat 506. The lower end of the vertical slider 507 has a third inclined surface that mates with the second inclined surface. A spring pin 508 is fixedly mounted on the side of the vertical slider 507. The spring pin 508 movably passes through the third slot on the vertical slider seat 506 and extends outward. A fixing pin 509 is installed in the lower middle part of the vertical slider seat 506. The two ends of the vertical spring 510 are fixedly connected to the spring pin 508 and the fixing pin 509, respectively. The vertical spring 510 is a tension spring. When the vertical slider 507 is not subjected to external force, it is in a downward stretched state under the action of the vertical spring 510. The lower part of the vertical slider seat 506 has a stop to limit the downward displacement of the vertical slider 507. A square hole is horizontally opened through the middle of the vertical slider 507, and a first inner inclined surface is provided inside the square hole. A hollow square seat is horizontally provided on one side of the middle of the vertical slider seat 506. The horizontal slider 511 is horizontally slidably installed in the hollow square seat through the square hole in the middle of the vertical slider 507. The horizontal slider 511 is provided with a second inner inclined surface that cooperates with the first inner inclined surface. The outer end of the horizontal slider 511 extending out of the hollow square seat is provided with an abutting inclined surface that cooperates with the corresponding cam plate. The other end extends outward through the square hole and movably through the main slider seat 501, and is equipped with a spring baffle 512. A stop block is fixed on the side wall of the vertical slider seat 506. A horizontal spring is provided between the extended stop block and the spring baffle 512. The horizontal spring is a compression spring. When the horizontal slider 511 is not under force, it is in the extended state under the action of the horizontal spring.

[0026] When the main slider 502 is subjected to an external force, it retracts. If the retraction stroke of the main slider 502 is small, the main slider column 503 will not touch the vertical slider 507, and the vertical slider 507 will not move. When the external force disappears, the main slider 502 extends again. When the main slider 502 is subjected to an external force and its retraction stroke is large, the main slider column 503 will touch the vertical slider 507. With the cooperation of the second and third inclined planes, the vertical slider 507 rises, and the main slider 502 continues to retract. When the stroke of the main slider column 503 passes the vertical slider 507, the vertical slider 507 slides down under the action of the vertical spring 510, thus moving the main slider... When the column 503 is locked, the main slider 502 remains retracted even when the external force disappears. When the main slider 502 is locked, the horizontal slider 511 retracts when it is subjected to external force. The second inner inclined surface of the horizontal slider 511 contacts the first inner inclined surface at the opening in the middle of the vertical slider. As the horizontal slider 511 continues to retract, it pushes the vertical slider upward. After the lower part of the vertical slider is lifted, the column 503 of the main slider separates and unlocks from the vertical slider. The main slider 502 extends under the action of the main spring 505. When the external force on the horizontal slider 511 disappears, the horizontal slider 511 extends and resets under the action of the horizontal spring.

[0027] like Figure 7-10As shown, a lifting transmission system is installed at the top of the curing barn frame 1. The corresponding steel wire rope of the lifting transmission system is connected downwards to the second-layer tobacco clip support frame 21 and the third-layer tobacco clip support frame 22. Specifically, there are two sets of lifting transmission systems, one horizontally and one vertically, connected to the second-layer tobacco clip support frame 21 and the other horizontally and the other to the third-layer tobacco clip support frame 22. The lifting transmission system includes a first left arched support 311, a second left arched support 312, a first right arched support 331, a second right arched support 332, and a central arched support 32. The first left arched support 311 and the second left arched support 312 are horizontally installed on the crossbeam 102 on the left side of the drying oven frame 1. The first right arched support 331 and the second right arched support 332 are horizontally installed on the crossbeam 102 on the right side of the drying oven frame 1. The middle arched support 32 is installed on the crossbeam 102 in the middle of the drying oven frame 1. The first left vertical pulley and the second left vertical pulley 362 are respectively installed below the first left arched support 311 and the second left arched support 312. The first right vertical pulley 361 and the second right vertical pulley are respectively installed below the first right arched support 331 and the second right arched support 332. The first left turning pulley 363 and the first right turning pulley are respectively installed below the second left arched support 311 and the second right arched support 332. The arch support 312 is located below the second right arch support 332; double pulleys are horizontally installed on the middle column 321 of the middle arch support 32, and the double pulleys include a left horizontal pulley 364 and a right horizontal pulley 365; a wire rope fixing block 37 is installed on the middle column 321 of the middle arch support 32; a hydraulic cylinder 351 is horizontally installed on the middle column 321 of the middle arch support 32, and a piston rod pulley 366 is installed at the end of the hydraulic piston rod of the hydraulic cylinder 351; a mounting plate 38 is horizontally fixed on the side of the middle arch support 32, and a rising limit switch 381 and a falling limit switch 382 are installed on the mounting plate 38, and a limit switch strike rod that cooperates with the two limit switches is installed on the hydraulic piston rod. One end of the left wire rope 341 is fixed to the wire rope fixing block 37, and the other end passes through the piston rod pulley 366, the left horizontal pulley 364, the first left turning pulley 363, the second left vertical pulley 362 and the first left vertical pulley in sequence, and then vertically downwards to connect with the left side of the corresponding cigarette clip support frame; one end of the right wire rope 342 is fixed to the second layer wire rope fixing block 37, and the other end passes through the piston rod pulley 366, the right horizontal pulley 365, the first right turning pulley, the second right vertical pulley and the first right vertical pulley 361 in sequence, and then vertically downwards to connect with the right side of the corresponding cigarette clip support frame.

[0028] like Figure 11As shown, the lifting transmission system is also connected to a power unit, which includes a hydraulic oil tank 401, an electric motor 402, an oil pump 403, a solenoid valve seat 404, a first solenoid valve 405, and a second solenoid valve 406. The electric motor 402, oil pump 403, and solenoid valve seat 404 are mounted above the hydraulic oil tank 401. The electric motor 402 is connected to the oil pump 403. The inlet of the oil pump 403 is connected to the hydraulic oil tank 401 via an oil pipe, and the outlet of the oil pump 403 is connected to the solenoid valve seat 404. The first solenoid valve 405 and the second solenoid valve 406 are mounted on the solenoid valve seat 404. The inlets and outlets of the two solenoid valves are connected to the hydraulic oil interfaces before and after the corresponding hydraulic cylinders 351 of the two lifting transmission systems via oil pipes. All solenoid valves are three-position four-way solenoid valves. When the coil of the solenoid valve is de-energized, the valve core is in the middle position, and both the inlet and outlet of the valve are closed, thereby locking the oil circuit.

[0029] like Figure 14-15 As shown, the present invention also includes a control system, which includes a control box 601, a controller, and a remote controller 602. The controller is a programmable logic controller (PLC) and is installed inside the control box 601, which is installed at the rear of the oven. The start button 612, stop button 613, emergency stop button 614, second-floor A descent button 615, second-floor A ascent button 616, second-floor B descent button 617, second-floor B ascent button 618, third-floor A descent button 619, third-floor B ascent button 620, third-floor B descent button 621, and third-floor B ascent button 622 are all installed on the front panel of the control box 601 for easy operation. The remote control buttons 623, 624, 625, 626, 627, 628, 629, 630, 630, 631, 632, 633 of the second-floor A remote control down button, 624, 625, 626, 627, 628, 629, 630, 630, 631, 632, 633 of the third-floor A remote control down button, 634, 625, 626, 637, 628, 629, 630 of the third-floor B remote control up button, 631, 632, and 633 of the third-floor B remote control up button, as well as the remote control start button, remote control stop button, and remote control emergency stop button, are all installed on the remote control 602. The remote control 602 can wirelessly transmit the information of the button press to the controller within a certain range.

[0030] A partition is used on the upper part of the curing oven frame 1 to separate the interior of the curing oven from the hydraulic cylinder 351, limit switch, etc. in the lifting transmission system. A partition is used at the rear of the curing oven frame 1 to separate the interior of the curing oven from the control box 601 and the power unit to prevent the effects of high temperature and high humidity on hydraulic and electrical components.

[0031] The working principle of this invention is as follows: When there are no tobacco clips in the curing barn, both second-layer tobacco clip support frames 21 and both third-layer tobacco clip support frames 22 are lowered to their lowest positions. At this time, tobacco clips are manually placed onto the third-layer tobacco clip support frame 22 near the rear of the curing barn. The third-layer tobacco clip support frame 22 has two rows of tobacco clips placed longitudinally. When the third-layer tobacco clip support frame 22 is full of tobacco clips, the remote start button 631 on the remote control 602 is pressed, powering on the system. The motor 402 starts running and drives the hydraulic oil pump 403. Pressing the corresponding remote lift button on the remote control 602 wirelessly transmits a signal to the controller. The controller energizes the electromagnetic coil of the corresponding solenoid valve, and hydraulic oil enters the tail of the hydraulic cylinder 351 that controls the movement of the third-layer tobacco clip support frame 22 through the oil pipe. This pushes the hydraulic piston rod to extend, and the left and right steel wire ropes 341 and 342 of the corresponding lifting transmission system, under the action of the piston rod pulley 366, horizontal pulley, steering pulley, and vertical pulley, pull up the third-layer tobacco clip support frame 22.

[0032] During the upward movement of the third-layer cigarette clip support frame 22, the third cams 712 on the four second cam plates 72 installed on the third-layer cigarette clip support frame 22 will touch the horizontal slider 511 of the safety protection device on the lower longitudinal support 105. The horizontal slider 511 retracts and uses its second inner inclined surface to push the vertical slider 507 upward. The lower part of the vertical slider 507 is unlocked and disengaged from the main slider column 503. The main slider 502 extends under the action of the main spring 505 to prepare for the support of the second-layer cigarette clip support frame 21.

[0033] The third-layer cigarette clip support frame 22 continues to rise. The third cam 712 on the upper part of the four first cam plates 71 installed on the third-layer cigarette clip support frame 22 will touch the horizontal slider 511 of the safety protection device installed on the upper longitudinal support 105. The horizontal slider 511 retracts and uses its second inner inclined surface to push the vertical slider 507 upward. The lower part of the vertical slider 507 is unlocked and disengaged from the main slider column 503. The main slider 502 extends under the action of the main spring 505. However, since its outer side is the first cam plate 71, the main slider 502 will not fully extend. Under the action of the main spring 505, the main slider 502 rests on the first cam plate 71, preparing for the support of the third-layer cigarette clip support frame 22.

[0034] As the third-layer cigarette clip support frame 22 continues to rise, the main slider 502 in the safety protection device on the upper longitudinal support 105 has extended and pressed against the first cam plate 71. Since the main slider 502 is a two-part slider with a notch in the middle, it will not touch the third cam 712 on the upper part of the first cam plate 71. Because the lower parts of the first cam plate 71 have notches on both sides, when the main slider 502 enters the notch at the lower part of the first cam plate 71, it extends completely under the action of the main spring 505. At this time, the hydraulic piston rod in the lifting transmission system corresponding to the third-layer cigarette clip support frame 22... When the limit switch rod hits the corresponding upper limit switch 381, the upper limit switch 381 sends a signal to the controller. The controller de-energizes the corresponding solenoid valve, cuts off the oil circuit, stops the hydraulic cylinder 351 from supplying oil, and the hydraulic piston rod stops moving forward and is locked. At this time, the third-layer cigarette clip support frame 22 is raised to the position and is in two safety protection states: one is that the main slider 502 of the safety protection device supports it, and the other is that the third-layer hydraulic piston rod is locked. Even if the main slider 502 fails, or the piston rod moves or the wire rope fails, the third-layer cigarette clip support frame 22 will not fall.

[0035] When the second layer cigarette clip support frame 21 is filled with cigarette clips, press the corresponding remote control up button on the remote control 602. The remote control 602 wirelessly transmits the signal to the controller, which controls the electromagnetic coil of the corresponding solenoid valve to be energized. Hydraulic oil enters the tail of the hydraulic cylinder 351 controlled by the second layer cigarette clip support frame 21 through the oil pipe, pushing the hydraulic piston rod to extend. The corresponding wire rope is pulled up by the hydraulic piston rod, piston rod pulley 366, etc., to move the second layer cigarette clip support frame 21 upward.

[0036] As the third layer of tobacco clamp support frame 22 has unlocked the safety protection device installed on the longitudinal support 105 on the lower layer of the curing chamber frame 1 during the upward process, the main slider 502 of its safety protection device is in the extended state. When the second-layer cigarette clip support frame 21 moves upward and touches the main slider 502, the main slider 502 presses tightly against the first cam plate of the second-layer cigarette clip support frame 21. When the main slider 502 enters the notch at the bottom of the first cam plate 71, it extends completely under the action of the main spring 505. At this time, the limit switch rod installed on the hydraulic piston rod will touch the corresponding rise-to-position limit switch 381. The rise-to-position limit switch 381 sends a signal to the controller, which controls the corresponding solenoid valve to de-energize, cuts off the oil circuit, stops the hydraulic cylinder 351 from supplying oil, and the hydraulic piston rod stops moving forward and is in a locked state. At this time, the second-layer cigarette clip support frame 21 is raised to the position and is in two safety protection states: one is that the main slider 502 of the safety protection device supports it, and the other is that the hydraulic piston rod is locked. Even if the main slider 502 fails, or the piston rod moves or the wire rope fails, the second-layer cigarette clip support frame 21 will not fall.

[0037] Following the same method, raise the other two third-layer tobacco clip support frames 22 and the second-layer tobacco clip support frame 21. After all four tobacco clip support frames have been raised, press the remote control stop button 632 on the remote control 602 to cut off the system power. At this point, the bottommost tobacco clip can be installed. After the bottommost tobacco clip is installed, the tobacco leaf curing can begin.

[0038] After the tobacco leaves are cured, the bottom layer of tobacco clips should be removed from the curing room first. Then, press the remote start button 631 on the remote control 602 to power on the system. The motor 402 will start running and drive the hydraulic oil pump 403. Press the corresponding remote descent button on the remote control 602. The remote control 602 will wirelessly transmit a signal to the controller. The controller will energize the solenoid coil of the corresponding solenoid valve. Hydraulic oil will enter the tail of the second-layer hydraulic cylinder 351 through the oil pipe, pushing the corresponding hydraulic piston rod to extend. The wire rope, under the action of the hydraulic piston rod and piston rod pulley 366, will pull the second-layer tobacco clip support frame 21 upward. The first cam plate 71 installed on the second layer cigarette clip support frame 21 also moves upward. The first cam 711 at the lower right corner of the first cam plate 71 will push the main slider 502 to retract. The main slider column 503 on the main slider 502 also retracts and its inclined surface will lift the vertical slider 507. When the main slider column 503 continues to retract and passes the inclined surface at the bottom of the vertical slider 507, the vertical slider 507 moves downward under the action of the vertical spring 510, locking the main slider column 503. At this time, the main slider 502 is completely retracted. At this time, the controller controls the electromagnetic coil of the corresponding solenoid valve to de-energize and the electromagnetic coil at the other end to be energized. The hydraulic oil enters the front of the hydraulic cylinder 351 through the oil pipe, pushing the hydraulic piston rod to retract. The wire rope is lowered by the hydraulic piston rod and the piston rod pulley 366, and the second layer cigarette clip support frame 21 moves downward.

[0039] To improve the reliability of the entire system, no electrical components are installed inside the curing chamber. The process from the lifting of the second layer of tobacco clip support frame 21 to the lowering of the second layer of tobacco clip support frame 21 is determined by the controller delay.

[0040] When the second layer of tobacco clip support frame 21 descends onto the horizontal bracket 106 installed on the drying oven frame 1, the limit switch rod installed on the corresponding hydraulic piston rod will hit the lowering limit switch 382. The lowering limit switch 382 will send a signal to the controller, which will de-energize the corresponding solenoid valve, cut off the oil circuit, stop the hydraulic cylinder 351 from supplying oil, and the hydraulic piston rod will retract forward and be in a locked state. The second layer of tobacco clip support frame 21 has been lowered and the dried tobacco clips can be taken away.

[0041] After the second layer of cigarette clips is removed, press the corresponding remote lowering button on the remote control 602. The remote control 602 wirelessly transmits a signal to the controller, which controls the corresponding solenoid valve to push the corresponding hydraulic piston rod to extend. The steel wire rope pulls the third layer cigarette clip support frame 22 upward. The first cam plate 71 installed on the third layer cigarette clip support frame 22 also moves upward. The first cam 711 at the lower right corner of the first cam plate 71 pushes the main slider 502 to retract. The main slider column 503 on the main slider 502 also retracts, and its inclined surface lifts the vertical slider 507. When the main slider column 503 continues to retract and passes the inclined surface below the vertical slider 507, the vertical slider 507 moves downward under the action of the vertical spring 510, locking the main slider column 503. At this time, the main slider 502 is completely retracted. At this time, the controller controls the corresponding solenoid valve to act, causing the steel wire rope to lower the third layer cigarette clip support frame 22 downward.

[0042] During the descent of the third-layer cigarette clip support frame 22, since the main slider 502 is fully retracted, the cam at the lower part of the first cam plate 71 will not touch the main slider 502 during the descent. However, the third cam 712 at the upper part of the first cam plate 71 will touch the horizontal slider 511 in the safety protection device. The horizontal slider 511 retracts, and during the retraction process, its inner inclined surface will push up the vertical slider 507. After the vertical slider 507 is raised to a certain distance, the vertical slider 507 unlocks from the main slider column 503. The main slider 502 extends under the action of the main spring 505. However, since the first cam plate 71 has already descended to a certain position, the main slider 502 will not enter the notch in the first cam plate 71, but will instead be above the notch at the lower part of the first cam plate 71. When the third cam 712 at the upper part of the first cam plate 71 passes the horizontal slider 511, the vertical slider 507 descends to the lowest position under the action of the vertical spring 510. Under the action of the horizontal spring, the horizontal slider 511 extends to its maximum position. The third-layer cigarette clip support frame 22 continues to descend. After the first cam plate 71 passes the main slider 502, the main slider 502 extends completely.

[0043] The third-layer cigarette clip support frame 22 continues to descend. Since the second-layer cigarette clip support frame 21 has retracted and locked the main slider 502 of the lower safety protection device during its descent, the descent of the third-layer cigarette clip support frame 22 is not affected by the lower main slider 502. During the continued descent of the third-layer cigarette clip support frame 22, when the second cam plate 72 touches the horizontal slider 511 in the lower safety protection device, the horizontal slider 511 retracts. During the retraction process, the inclined surface of the horizontal slider 511 will push up the vertical slider 507. After the vertical slider 507 is raised to a certain distance, the vertical slider 507 unlocks from the main slider column 503, and the main slider 502 extends under the action of the main spring 505. When the second cam 721 on the upper part of the second cam plate 72 of the third-layer cigarette clip support frame 22 passes the horizontal slider 511, the vertical slider 507 descends to the bottom under the action of the vertical spring 510. Under the action of the horizontal spring, the horizontal slider 511 extends to its maximum position. The third-layer cigarette clip support frame 22 continues to descend. After the second cam plate 72 passes the main slider 502, the main slider 502 extends completely.

[0044] The third-layer cigarette clip support frame 22 continues to descend. When the third-layer cigarette clip support frame 22 descends onto the second-layer cigarette clip support frame 21, the limit switch on the hydraulic piston rod corresponding to the third-layer cigarette clip support frame 22 will hit the descent limit switch 382. The descent limit switch 382 sends a signal to the controller, which de-energizes the solenoid valve, cuts off the oil circuit, stops the hydraulic cylinder 351 from supplying oil, and the hydraulic piston rod retracts forward and is locked. The descent of the third-layer cigarette clip support frame 22 is complete.

[0045] Press the remote stop button 632 on the remote control 602 to cut off the power to the system and end the tobacco curing process.

[0046] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A height-adjustable, high-density tobacco curing barn, comprising a curing barn frame disposed within the barn, characterized in that: The curing barn frame is equipped with a tobacco clamp support device, which includes a bottom layer, a second layer, and a third layer of tobacco clamp support frames arranged horizontally from bottom to top. The second and third layer tobacco clamp support frames are vertically movable within the curing barn frame. A lifting transmission system is installed at the top of the curing barn frame, and the corresponding steel wire rope of the lifting transmission system is connected downward to the second and third layer tobacco clamp support frames. The curing barn frame is also equipped with a safety protection device, and cam plates that cooperate with the safety protection device are installed on the second and third layer tobacco clamp support frames. The lifting transmission system is also connected to a power unit. The lifting transmission system, the power unit, and the control system are connected. The second and third cigarette clip support frames are also equipped with two first cam plates on their sides respectively. The upper part of the first cam plate is a flat plate, one side of the lower part is a first rectangular opening, the upper part of the other side of the lower part is a second rectangular opening, and the lower part of the other side of the lower part is equipped with a first cam. The front and rear sides of the third cigarette clip support frame are also equipped with two second cam plates, and the middle of the second cam plate is equipped with a second cam. The middle of the flat plate of the upper part of the first cam plate of the third cigarette clip support frame is also equipped with a third cam. The safety protection device includes a main slider seat, a main slider, a main slider column, a vertical slider seat, a vertical slider, and a horizontal slider. Two main sliders are arranged side by side, and the two main sliders are fixedly connected and slidably installed in the main slider seat through a central shaft. The ends of the two main sliders extending out of the main slider seat have a first inclined surface. Main slider spring seats fixed to both sides of the main slider extend outward through a first slot in the main slider seat. One end of the main spring is horizontally fixed to the outer wall of the main slider seat, and the other end is fixed to the outer end of the main slider seat. The main spring is a compression spring. A main slider column is vertically installed on the top of the main slider. The upper end of the main slider column moves outward through a second slot in the top of the main slider seat and has a second inclined surface. The vertical slider seat is vertically fixed to the second slot in the top of the main slider seat by screws. The vertical slider is vertically slidably installed in the vertical slider seat. The lower end of the vertical slider has a third inclined surface that cooperates with the second inclined surface. A spring pin is fixedly mounted on the side of the vertical slider. The spring pin moves through the third slotted hole on the vertical slider seat and extends outward. A fixed pin is installed in the lower middle part of the vertical slider seat. The two ends of the vertical spring are fixedly connected to the spring pin and the fixed pin, respectively. The vertical spring is a tension spring. A square hole is horizontally opened in the middle of the vertical slider. The square hole has a first inner inclined surface. A hollow square seat is horizontally provided on one side of the middle of the vertical slider seat. The horizontal slider slides horizontally in the hollow square seat through the square hole in the middle of the vertical slider. The horizontal slider has a second inner inclined surface that cooperates with the first inner inclined surface. The outer end of the horizontal slider that extends out of the hollow square seat has an abutting inclined surface that cooperates with the corresponding cam plate. The other end extends outward through the square hole and moves through the main slider seat. A spring baffle is installed thereon. A stop block is fixed on the side wall of the vertical slider seat. A horizontal spring is provided between the extended stop block and the spring baffle. The horizontal spring is a compression spring. The lifting transmission system has two sets, each connected to the second and third layer tobacco clip support frames respectively. The lifting transmission system includes a first left arched support, a second left arched support, a first right arched support, a second right arched support, and a central arched support. The first and second left arched supports are horizontally installed on the left-side crossbeam of the curing barn frame, the first and second right arched supports are horizontally installed on the right-side crossbeam of the curing barn frame, and the central arched support is installed on the middle crossbeam of the curing barn frame. The first and second left vertical pulleys are respectively installed below the first and second left arched supports, the first and second right vertical pulleys are respectively installed below the first and second right arched supports, and the first left and first right turning pulleys are respectively installed below the second left and second right arched supports. Double pulleys are horizontally installed on the central column of the central arched support. It includes a left horizontal pulley and a right horizontal pulley; a wire rope fixing block is installed on the middle column of the central arch support; a hydraulic cylinder is horizontally installed on the middle column of the central arch support, and a piston rod pulley is installed on the end of the hydraulic piston rod of the hydraulic cylinder; a mounting plate is horizontally fixed on the side of the central arch support, and a rise limit switch and a fall limit switch are installed on the mounting plate, and a limit switch strike rod that cooperates with the two limit switches is installed on the hydraulic piston rod; one end of the left wire rope is fixed to the wire rope fixing block, and the other end passes through the piston rod pulley, the left horizontal pulley, the first left turning pulley, the second left vertical pulley, and the first left vertical pulley in sequence before vertically downward and connecting to the left side of the corresponding cigarette clip support frame; one end of the right wire rope is fixed to the second layer of wire rope fixing blocks, and the other end passes through the piston rod pulley, the right horizontal pulley, the first right turning pulley, the second right vertical pulley, and the first right vertical pulley in sequence before vertically downward and connecting to the right side of the corresponding cigarette clip support frame.

2. The height-adjustable dense curing barn for tobacco leaves according to claim 1, characterized in that: The curing barn frame includes longitudinal beams, transverse beams, and columns. Multiple transverse beams are vertically fixed between two longitudinal beams. The columns are vertically fixed below the longitudinal and transverse beams, forming a rectangular frame structure. A row of short columns is vertically arranged in the middle of the lower part of the curing barn frame along the length of the longitudinal beams. First-layer tobacco clip support plates are installed on both sides of the short columns and on the lower inner sides of the two rows of columns, with the four first-layer tobacco clip support plates on the same horizontal plane. The lowest-level tobacco clip support frame is located on the first-layer tobacco clip support plate. Multiple longitudinal supports are symmetrically installed on the two rows of columns, fixed to the side walls of the columns on the same side, and are divided into two layers. The safety protection device is installed on the longitudinal supports. Multiple transverse supports are symmetrically installed on the lower inner side of the columns, supporting the second-layer tobacco clip support frame. Each longitudinal section inside the curing barn frame has two second-layer tobacco clip support frames and three third-layer tobacco clip support frames.

3. The height-adjustable dense curing barn for tobacco leaves according to claim 2, characterized in that: Both cigarette clip support frames include support longitudinal beams, support transverse beams, and support columns; the two support longitudinal beams and two support transverse beams are perpendicular to each other to form a rectangular frame structure, and the support columns are vertically fixed between the upper and lower rectangular frame structures.

4. The height-adjustable dense curing barn for tobacco leaves according to claim 2, characterized in that: The second and third cigarette clip support frames are each equipped with first rollers on the sides near the four corners. The two cigarette clip support frames roll up and down along the lateral sides of the two side columns via the first rollers.

5. The height-adjustable dense curing barn for tobacco leaves according to claim 4, characterized in that: Near the four corners of the two cigarette clip support frames, on the same side as the first roller, a roller mounting plate is installed. A second roller is installed on the roller mounting plate. The two cigarette clip support frames roll up and down along the longitudinal side of the two side columns via the second roller.

6. The height-adjustable dense curing barn for tobacco leaves according to claim 1, characterized in that: The power unit includes a hydraulic oil tank, an electric motor, an oil pump, a solenoid valve seat, a first solenoid valve, and a second solenoid valve. The electric motor, oil pump, and solenoid valve seat are installed above the hydraulic oil tank. The electric motor is connected to the oil pump. The inlet of the oil pump is connected to the hydraulic oil tank through an oil pipe. The outlet of the oil pump is connected to the solenoid valve seat. The first and second solenoid valves are installed on the solenoid valve seat. The inlets and outlets of the two solenoid valves are connected to the hydraulic oil interfaces before and after the corresponding hydraulic cylinders of the two sets of lifting transmission systems through oil pipes.

7. The height-adjustable dense curing barn for tobacco leaves according to claim 1, characterized in that: The control system includes a control box, a controller, and a remote controller. The controller is installed inside the control box, and the control box is installed outside the drying room. The controller and remote controller are equipped with corresponding control buttons.

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