Wood chip stacking warehouse and material storing and discharging method thereof

Abstract

Wood chips are piled in a piling area, a conveying belt, a rail and the piling area are arranged, a discharging screw stretches across the piling area, the discharging screw pokes the wood chips on the bottom edge of a wood chip pile in the piling area to the conveying belt when rotating, the two ends of the discharging screw are rotationally connected with corresponding traveling frames respectively, the traveling frames are suitable for traveling along the rail, and the discharging screw drives the discharging screw to move along the rail. And the discharging screw is fed along the stacking area in a positioning manner. Compared with the prior art, the discharging screw continuously supplies wood chips to the conveying belt at a stable speed, so that the conveying belt continuously supplies wood chips to equipment such as a wood shaving machine at a stable speed, the input cost of a forklift and workers is reduced, the labor intensity of the workers is reduced, and collision of people and vehicles in a stacking area is avoided.

Description

Technical Field

[0001] The invention relates to wood chip processing, in particular to a wood chip storage and a material storage and discharge method thereof. Background Art

[0002] Wood is a valuable resource for people's lives, and the rational use of wood is one of the focuses of the country and board companies. Specifically, in wood processing companies, after cutting straight and thick wood sections, the remaining wood and wood chips derived from cutting are waste products, and the remaining wood will also be broken into wood chips. Therefore, wood processing companies derive various wood chips, which are relatively wasteful when they are directly discarded or used as firewood; particle board companies rationally use these wood chips, which will make full use of wood resources in a very profitable way.

[0003] Particleboard companies purchase wood chips and store them in a warehouse, which then transports the chips to the chipper via a conveyor belt. The length and width of the warehouse is generally greater than 10 meters, and the chip warehouse (chip storage and retrieval device) is a large storage device.

[0004] The existing technology mainly uses a forklift to scoop up the wood chips from the pile area and then transfer the wood chips to the conveyor belt. In this method, when a single forklift is used, the scooping, transfer and dumping of the wood chips are three non-synchronous processes, resulting in intermittent transportation of wood chips, which is not conducive to the continuous operation of the wood chipper; when at least two forklifts are used, there is a risk of collision between the forklifts when they are moving, the fuel consumption cost of the vehicle and personnel is relatively high, and the dumping rate of the forklift is also relatively unstable. Summary of the invention

[0005] The present invention aims to solve at least one of the above-mentioned technical problems and provide a wood chip storage warehouse, which can output wood chips continuously and steadily, reduce human involvement and risks, and reduce costs.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A wood chip storage warehouse comprises a storage area, a conveyor belt, a track and a discharge screw, wherein the storage area is suitable for storing wood chips, the conveyor belt is arranged with the storage area, the track is arranged with the storage area, the discharge screw spans the storage area, and the discharge screw is suitable for pushing wood chips at the bottom edge of the wood chip pile in the storage area to the conveyor belt when rotating, and the two ends of the discharge screw are respectively rotatably connected to corresponding traveling frames, and at least one traveling wheel of the traveling frame is drivingly connected to a traveling motor, and the traveling frame is suitable for walking along the track to adjust the discharge screw along the storage area.

[0008] Compared with the prior art, the beneficial effects of the present application include: the discharging screw continuously and steadily supplies wood chips to the conveyor belt, making it convenient for the conveyor belt to continuously and steadily supply wood chips to equipment such as the planer, thereby reducing the input costs of forklifts and workers, reducing the labor intensity of workers, and avoiding collisions between people and vehicles in the stacking area.

[0009] As an improvement of the above technical solution, the discharge screw is rotatably connected to a baffle, which is suitable for flipping to the front or rear side of the discharge screw. The baffle is used to define a discharge channel suitable for the rotation of the discharge screw together with the wood chip pile.

[0010] As an improvement of the above technical solution, the discharging screw drive is connected to a torque sensor, the traveling motor and the torque sensor are electrically connected to a central processing unit, the central processing unit is suitable for controlling the traveling motor to perform feed according to the feedback value of the torque sensor being lower than a threshold value, and the central processing unit is suitable for controlling the traveling motor to pause according to the feedback value of the torque sensor being higher than a limit value.

[0011] As an improvement of the above technical solution, the traveling frame is provided with a front limit proximity switch suitable for detecting that the traveling frame moves to the front limit of the stacking area, and a rear limit proximity switch suitable for detecting that the traveling frame moves to the rear limit of the stacking area. The front limit proximity switch, the rear limit proximity switch and the traveling motor are all electrically connected to a central processing unit. The central processing unit is suitable for controlling the traveling motor to adjust backward as the feed direction according to detection by the front limit proximity switch, and the central processing unit is suitable for controlling the traveling motor to adjust forward as the feed direction according to detection by the rear limit proximity switch.

[0012] As an improvement of the above technical solution, walls are set at both ends of the pile area, and multiple baffles are arranged axially on both sides of the pile area, and adjacent baffles are spliced, and limited ground grooves and limited skylights are set on both sides of the pile area, the limited ground grooves are suitable for accommodating the corresponding lower ends of the multiple baffles, and the limited skylights are suitable for the baffles to move up and down, and the discharging screw is rotatably connected to a top frame at one end close to the conveyor belt, and is rotatably connected to a top block at the other end, the top frame and the top block are both triangular or trapezoidal, and the bottom edge is suitable for being accommodated in the limited ground groove, and the two waists are suitable for the baffles to climb or slide down, and the belly hole of the top frame is suitable for discharging wood chips.

[0013] As an improvement of the above technical solution, the top frame is trapezoidal, and a second recess is provided on the top edge of the top frame. The second recess is provided with a follower screw extending along the top edge. The follower screw is rotatably connected to the top frame, and the baffle on any waist of the top frame is suitable for transitioning to the other waist through the follower screw.

[0014] As an improvement of the above technical solution, a plurality of feed belts are distributed above the stack area at intervals along the axial direction.

[0015] A method for discharging wood chips from a stockpile, comprising the following steps:

[0016] Stockpiling, wood chips are dumped into the stockpile area to form a wood chip pile in the stockpile area;

[0017] The cutting tool is fed in, and the discharge screw is squeezed toward the wood chip pile, so that the first wood chip is present in the thread gap of the discharge screw;

[0018] Discharging, the discharging screw rotates, and the threaded sheet of the discharging screw drives the first row of wood chips to move along the axial direction of the discharging screw, and the first row of wood chips is scraped to the conveyor belt;

[0019] Discharging: The conveyor belt rotates cyclically, and the wood chips in the pile area are discharged outward through the conveyor belt;

[0020] When the discharge screw rotates, the discharge screw continuously or intermittently squeezes the wood chip pile, so that one or more layers of the first discharge wood chips exist in the thread gap of the discharge screw, and the conveyor belt continuously rotates in a cycle.

[0021] As an improvement of the above technical solution, in the feeding step, the enclosure is flipped to the front or rear side of the discharge screw, and the discharge screw drags the enclosure to squeeze towards the wood chip pile together. The enclosure and the wood chip pile together define a discharge channel suitable for the rotation of the discharge screw.

[0022] As an improvement of the above technical solution, in the feeding step, the traveling frame drives the discharging screw to move forward or backward for adjustment, and the discharging screw drives the top frame and the top block to move, so that one waist of the top frame and the top block are relatively lifted by the corresponding baffle plate, and the other waist is relatively slid down by the corresponding baffle plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0024] Figure 1 This is a schematic diagram of the structure of a wood chip storage bin according to an embodiment of the present invention;

[0025] Figure 2 for Figure 1 A partial cross-sectional view showing a wood chip storage bin from a rearward perspective;

[0026] Figure 3 for Figure 2 A schematic diagram of the local structure of a wood chip storage is shown;

[0027] Figure 4 for Figure 1 A schematic diagram showing the structure of the wood chip warehouse after some parts are hidden;

[0028] Figure 5 for Figure 4 A schematic diagram showing the partial structure of the wood chip storage Figure 1 ;

[0029] Figure 6 for Figure 4 A schematic diagram showing the partial structure of the wood chip storage Figure 2 ;

[0030] Figure 7 for Figure 1 A schematic diagram showing the partial structure of the wood chip storage bin from another three-dimensional perspective;

[0031] Figure 8 for Figure 7 An exploded view showing the structure with some components hidden;

[0032] Fig. 9 The figure is a schematic diagram of the trapezoidal top frame structure of the wood chip storage bin according to an embodiment of the present invention.

[0033] The accompanying drawings are only one specific embodiment of the present invention, and the form and structure of this specific embodiment should not limit the expansion of other embodiments.

[0034] Stacking area 100, limiting ground groove 110, limiting plate 120, limiting and guiding strip 130,

[0035] Conveyor belt 200,

[0036] Track 310, traveling frame 320, traveling wheel 321, second driven sprocket 322,

[0037] A discharge screw 400, a first driven sprocket 410;

[0038] enclosure 500, first mounting ear 510, second mounting ear 520,

[0039] The wall 610, the baffle 620,

[0040] Top frame 710, second recess 711, follower screw 712, top block 720, shield 721,

[0041] Feed belt 800,

[0042] Then pile up the fence 900 meters higher. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Reference Figures 1 to 3The present invention provides a wood chip storage warehouse (wood chip storage and retrieval device), including a stacking area 100, a conveyor belt 200, a track 310 and a discharge screw 400. The stacking area 100 is suitable for storing wood chips, the conveyor belt 200 is arranged with the stacking area 100, the track 310 is arranged with the stacking area 100, the discharge screw 400 spans the stacking area 100, and the discharge screw 400 is suitable for pushing the wood chips at the bottom edge of the wood chip pile in the stacking area 100 to the conveyor belt 200 when rotating. The two ends of the discharge screw 400 are respectively rotatably connected to the corresponding traveling frames 320, and the traveling wheels 321 of at least one traveling frame 320 are drivingly connected to the traveling motor. The traveling frame 320 is suitable for walking along the track 310 to adjust the position of the discharge screw 400 along the stacking area 100.

[0045] It can be understood that the conveyor belt 200 includes a belt, a pulley and a feed motor, and both ends of the belt are wound around corresponding pulleys, that is, at least two pulleys are provided, and at least one pulley is drivingly connected to the feed motor.

[0046] On the other hand, the carriage 320 has n rows of wheels 321, and the track 310 includes n parallel rails; preferably, the carriage 320 is provided with 2 rows of wheels 321, and the track 310 is provided with 2 parallel rails. Figures 1 to 3 , Figure 5 and Figure 6 The travel motor chain drives the travel wheel 321, and the rotating shaft of the travel wheel 321 is provided with a second driven sprocket 322. The travel frame 320 in the figure hides the travel motor and the second driving sprocket thereon, and the second driven sprocket 322 is connected to the travel motor through the second chain and the second driving sprocket. The travel motor can also drive the travel wheel 321 through a gear system, a belt, etc.

[0047] It is understandable that the discharge screw 400 is connected to the discharge motor. Figures 1 to 3 , Figure 5 and Figure 6 The discharging motor chain drives the discharging screw 400, and the discharging screw 400 is provided with a first driven sprocket 410. The carriage 320 in the figure hides the discharging motor and the first driving sprocket thereon, and the first driven sprocket 410 is connected to the discharging motor through the first chain and the first driving sprocket. The discharging motor can also drive the discharging screw 400 through a gear system, a belt, etc.

[0048] Electric motors (electric motors / electric motors), pneumatic motors and hydraulic motors are all motors.

[0049] A method for discharging wood chips from a stockpile, comprising the following steps:

[0050] Stock, see Figure 1 and Figure 2 The V 1 、V 2direction, the wood chips are dumped into the pile area 100, and a wood chip pile is formed in the pile area 100;

[0051] The discharge screw 400 is fed into the wood chip pile, so that the first wood chips are present in the thread gap of the discharge screw 400;

[0052] Layout, see Figure 1 and Figure 2 The V 3 The discharging screw 400 rotates in the same direction, and the threaded sheet of the discharging screw 400 drives the first row of wood chips to move along the axial direction of the discharging screw 400, so as to scrape the first row of wood chips toward the conveyor belt 200;

[0053] Discharge, see Figure 1 and Figure 2 The V 4 The conveyor belt 200 circulates and rotates in the direction, and the wood chips in the pile area 100 are output to the outside through the conveyor belt 200;

[0054] When the discharge screw 400 rotates, the discharge screw 400 continuously or intermittently squeezes the wood chip pile, so that the lower end of the discharge screw 400 is buried by one or more layers of wood chips, so that one or more layers of first-discharge wood chips exist in the thread gap of the discharge screw 400, and the conveyor belt 200 continuously rotates in a cycle. The discharge screw 400 eats one edge of the wood chip pile, rather than a single point, so the wood chip pile collapses more smoothly and orderly.

[0055] Reference Figures 1 to 3 The discharge screw 400 rotates to continuously scrape the wood chips to the conveyor belt 200, and the conveyor belt 200 continuously rotates in a cycle to continuously supply wood chips to the shaving machine.

[0056] It is understandable that, referring to Figure 1 and Figure 3 , depending on whether the conveyor belt 200 is located at the left or right end of the discharge screw 400, the discharge screw 400 rotates in the corresponding direction, and the discharge screw 400 scrapes the wood chips to the conveyor belt 200. Regardless of whether the carriage 320 adjusts the discharge screw 400 forward or backward, the conveyor belt 200 is always located at the left or right end of the discharge screw 400, and the discharge screw 400 always scrapes the wood chips in the corresponding direction. On the other hand, it can be understood that according to the pile shape and collapse characteristics of the pile, referring to Figure 1 and Figure 3 , the discharge screw 400 scrapes the material at the bottom of the discharge pile.

[0057] In some designs, the surrounding of the discharge screw 400 is not provided with a fence 500; when the front and rear sides and the lower end of the discharge screw 400 are buried by wood chips, the discharge screw 400 rotates and actually starts to discharge the wood chips, so that the wood chips are discharged to the conveyor belt 200. Figures 1 to 3 , Figure 6, there is a pile of wood chips to be discharged in front of the discharge screw 400, and the traveling frame 320 is suitable for driving the discharge screw 400 to adjust its position forward to squeeze the wood chip pile, so that the front side of the discharge screw 400 is buried first, and the discharge screw 400 then rotates for a certain period of time, so that the rear side of the discharge screw 400 is buried with one or more layers of other wood chips, and the thread gap of the discharge screw 400 has one or more layers of first wood chips to be discharged, that is, a discharge channel is defined between the other wood chip layer and the wood chip pile, and the first wood chips to be discharged exist in the discharge channel, and the discharge screw 400 continues to rotate to scrape the first wood chips to be discharged to the conveyor belt 200. Therefore, in this way, the discharge screw 400 and the wood chips complement each other, and one or more layers of other wood chips must always remain on the front and rear sides of the discharge screw 400, and the pile area 100 needs to have other wood chips that are difficult for the discharge screw 400 to discharge. It can be understood that when the discharge screw 400 wants to discharge multiple layers of wood chips simultaneously (to increase the discharge rate of the wood chip pile), the discharge screw 400 needs to squeeze deeper into the wood chip pile (i.e., increase the cutting amount), and multiple layers of other wood chips need to remain on the rear side of the discharge screw 400; similarly, when the discharge screw 400 is only preset with one layer of other wood chips, the discharge efficiency of the wood chip pile is low.

[0058] To solve the problem of sufficient material discharge in the pile area 100, refer to Figure 1 , Figure 4 , Figure 5 , Figure 7 and Figure 8 In some embodiments of the present invention, the discharge screw 400 is rotatably connected to the enclosure 500. In the feeding step, the enclosure 500 is suitable for flipping to the front or rear side of the discharge screw 400. The discharge screw 400 drags the enclosure 500 to squeeze the wood chip pile together. The enclosure 500 is used to define a discharge channel suitable for the rotation of the discharge screw 400 together with the wood chip pile. Figures 1 to 3 , Figure 6 , the discharging screw 400 first performs the discharging of the front side wood chip pile, and the enclosure 500 first flips to the rear side of the discharging screw 400; specifically, the traveling frame 320 drives the discharging screw 400 to adjust its position forward at a relatively low speed (that is, the discharging screw 400 presents a rolling cutter that cuts forward), such as 2mm / s, and the discharging screw 400 squeezes toward the wood chip pile, so that the lower end of the discharging screw 400 is continuously buried with one or more layers of wood chips, and the enclosure 500 is A discharge channel is defined between the block 500 and the wood chip pile, and the discharge screw 400 rotates, and the threaded sheet of the discharge screw 400 scrapes the first discharged wood chips to the conveyor belt 200; when the wood chip pile in front of the discharge screw 400 is discharged, the block 500 is flipped to the front side of the discharge screw 400, and the traveling frame 320 drives the discharge screw 400 to adjust its position backward, and the discharge screw 400 is squeezed to the new wood chip pile behind it.

[0059] It is understandable that, referring to Figure 1The traveling frame 320 drives the discharge screw 400 to squeeze the wood chip pile in front. When the discharge screw 400 discharges the wood chip pile in front of it, a new wood chip pile can be stacked in the rear of the discharge screw 400.

[0060] The length and width of the stacking area 100 is at least 10 meters. In order to solve the problem of the detachability and convenience of the enclosure 500, refer to Figure 8 One end of the enclosure 500 is detachably connected to a first mounting ear 510, and the other end is integrally formed with or detachably connected to a second mounting ear 520. The enclosure 500 is rotatably connected to the discharge screw 400 through the first mounting ear 510 and the second mounting ear 520, so that the enclosure 500 can rotate around the axis of the discharge screw 400, so that the enclosure 500 can be flipped to the front or rear side of the discharge screw 400.

[0061] Compared with the prior art, the beneficial effects of the present application include: the discharge screw 400 continuously and steadily supplies wood chips to the conveyor belt 200, which facilitates the conveyor belt 200 to continuously and steadily supply wood chips to equipment such as the planer, reduces the investment cost of forklifts and workers, reduces the labor intensity of workers, and avoids collisions between people and vehicles in the stacking area.

[0062] The cable arrangement problem of the traveling motor and the discharging motor has not been solved. A sky bridge extending along the axial direction is arranged above the track 310. A plurality of pulleys are arranged on the sky bridge. The pulleys are suitable for walking along the sky bridge. The cables are connected to the core shafts of the corresponding pulleys at certain intervals; therefore, when the traveling frame 320 drives the discharging screw 400 to adjust its position forward and backward, the cables are stretched or redundantly suspended.

[0063] In some designs, the traveling frame 320 and the discharging screw 400 move / feed at a constant rate according to the discharging speed of the discharging screw 400; in the feeding step, the traveling frame 320 drives the discharging screw 400 to feed at a constant rate. In some designs, a workbench and a control button are set on the traveling frame 320, and the traveling motor is electrically connected to the corresponding control button; when the worker on the workbench finds that the discharging screw 400 has a small amount of cutting (that is, the discharging screw 400 is squeezed into the wood chip pile shallowly, and the discharging screw 400 buries less wood chips), the worker controls the traveling frame 320 to move by the control button so that the discharging screw 400 can bury more wood chips.

[0064] In some embodiments of the present invention, the discharging screw 400 is connected to a torque sensor, such as a torque detection module provided by some motors, a torque detection module provided by encoders, or a torque detection module provided by motor dynamometers. The driving motor and the torque sensor are both electrically connected to the central processor, and the central processor is suitable for controlling the driving motor to perform feeding according to the feedback value of the torque sensor being lower than the threshold value, and the central processor is suitable for controlling the driving motor to pause according to the feedback value of the torque sensor being higher than the limit value. It can be understood that some motors are electrically connected to the central processor through motor drivers, and the torque detection module of the motor driver is electrically connected to the central processor through the motor driver. On the other hand, the central processor can be a common ECU, such as a PLC, a single-chip microcomputer, etc., or a CPU. In the feeding step, when the torque of the discharging screw 400 is less than the threshold value, the traveling frame 320 drives the discharging screw 400 to squeeze toward the wood chip pile, and when the torque of the discharging screw 400 is greater than the limit value, the traveling frame 320 and the discharging screw 400 pause feeding.

[0065] In some designs, a control switch (knob or button, etc.) is provided on the traveling frame 320 for determining whether the traveling frame 320 is moving forward or backward as the moving / feeding direction. The control switch is electrically connected to the central processing unit, and / or the traveling motor is connected to the traveling wheel 321 through a gear system transmission, and a lever is provided on the traveling frame 320 for controlling the gear system to perform forward transmission or reverse transmission; when the worker sees that the discharge screw 400 is about to move to the front end or the rear end of the stacking area 100, the worker executes the control switch or the lever to make the traveling frame 320 and the discharge screw 400 turn back and adjust their positions.

[0066] In some embodiments of the present invention, the traveling frame 320 is provided with a front limit proximity switch suitable for detecting the front limit of the traveling frame 320 when it moves to the stacking area 100, and a rear limit proximity switch suitable for detecting the rear limit of the traveling frame 320 when it moves to the stacking area 100. The front limit proximity switch, the rear limit proximity switch and the traveling motor are all electrically connected to the central processor. The central processor is suitable for controlling the traveling motor to adjust the position backward as the feed direction according to the detection of the front limit proximity switch, and the central processor is suitable for controlling the traveling motor to adjust the position forward as the feed direction according to the detection of the rear limit proximity switch. Its control principle is similar to the forward and reverse drag control of the three-phase asynchronous motor. The two limit switches are respectively connected in series with the coils of the corresponding relays, and the first normally open contact of the relay is connected in parallel. The first normally open contact of the relay is connected in series with the coil of the corresponding contactor, that is, the contactor is a forward / reverse adjustment contactor. The first normally open contacts of the contactors associated with the two limit switches are used to control the on and off of the working power supply of the traveling motor.

[0067] It can be understood that both the front limit proximity switch and the rear limit proximity switch can be sensors or mechanical switches (i.e. contact switches with a touch rod).

[0068] Reference Figures 1 to 8 In some embodiments of the present invention, a fence 610 is provided at both ends of the stacking area 100, and a plurality of baffles 620 are arranged axially on both sides of the stacking area 100, and adjacent baffles 620 are spliced, and limited ground grooves 110 and limited skylights are provided on both sides of the stacking area 100, the limited ground grooves 110 are suitable for accommodating the lower ends of the corresponding plurality of baffles 620, and the limited skylights are suitable for the baffles 620 to move up and down, and one end of the discharging screw 400 close to the conveyor belt 200 is rotatably connected to a top frame 710, and the other end is rotatably connected to a top block 720, the top frame 710 and the top block 720 are both triangular or trapezoidal, and the bottom edge is suitable for being accommodated in the limited ground groove 110, the two waists are suitable for the baffles 620 to climb or slide down, and the belly hole of the top frame 710 is suitable for discharging wood chips. In the feeding step, the traveling frame 320 drives the discharge screw 400 to move forward or backward to adjust the position, and the discharge screw 400 drives the top frame 710 and the top block 720 to move, so that the top frame 710 and the top block 720 are relatively raised by the corresponding baffle 620 on one side, and the other side is relatively slid down by the corresponding baffle 620. When the discharge screw 400 rotates, the top frame 710 and the top block 720 are restrained by the two bottom corners, so that the bottom edge remains contained in the limiting groove 110.

[0069] Regarding the "climbing or sliding of the baffle 620", it can be understood that it is a relative movement; in practice, both the top frame 710 and the top block 720 use the bottom angle to scoop up the baffle 620 during movement, and then use the corresponding waist to hold up the baffle 620, and the other waist allows the baffle 620 to slide during movement.

[0070] The present invention adopts a triangular or trapezoidal movable top, which can not only solve the problem that the discharging screw 400 can lift up the baffle 620 approaching the discharging screw 400 when it moves forward or backward, and prevent the baffle 620 from affecting the rotation of the discharging screw 400, and the discharging screw 400 can move smoothly and the discharging end of the discharging screw 400 can be discharged smoothly, but also solve the technical problem of stably enclosing and stacking wood chips in the stacking area 100; that is, the stacking area 100 can be flexibly opened and closed at any position; the top frame 710 and the top block 720 both have two corners that limit each other to prevent the top frame 710 and the top block 720 from flipping (forward or reverse), and the top frame 710 and the top block 720 both allow the discharging screw 400 to rotate and can be adjusted forward and backward with the discharging screw 400 so that the baffle 620 can climb or slide.

[0071] Reference Figure 2 , Figure 3 , two limit plates 120 are disposed on both sides of the stacking area 100, and the two limit plates 120 define a limit skylight. Figure 1 , Figure 4 , Figures 6 to 8 The lower end of the baffle 620 is chamfered or rounded to improve the convenience of scooping up the baffle 620.

[0072] On the other hand, the lower end of the baffle 620 can be fixed by the limited groove 110, and the bottom edges and corners of the top frame 710 and the top block 720 are suitable for effectively shoveling the baffle 620, and are suitable for effectively shoveling out the wood chips that may be stuck in the limited groove 110. The baffle 620 can be disassembled and assembled by plugging and unplugging, which is convenient and fast. The top frame 710 and the top block 720 are triangular or trapezoidal, and the top frame 710 and the top block 720 are relatively balanced in force.

[0073] In addition, only the part of the baffle 620 close to the discharge screw 400 is raised and lowered, and the baffle 620 in other areas remains stationary to surround the wood chips. The position close to the discharge screw 400 is also a shallow position of the material pile, and the baffle 620 that needs to be raised and lowered can be flexibly raised and lowered.

[0074] In some settings, the two ends of the discharge screw 400 are rotatably connected to the corresponding sliders, and the sliders are connected to the wall of the stacking area 100 through telescopic plates. The telescopic plates refer to the plate ribs commonly used in machine tools (used to cover the lead screw nut pair). Compared with the above-mentioned baffle 620 method, the telescopic plate needs to surround the wood chips and be telescopic, so the telescopic power of the telescopic plate consumes more energy; inside the telescopic plate, the sub-plates are connected to each other to ensure the overall shape of the telescopic plate, so each sub-plate is the weak rib of the telescopic plate, and the overall strength of the telescopic plate is relatively low. In order to ensure the flexibility of telescopic, the sub-plates are required to have high precision and deformation resistance.

[0075] Reference Figures 5 to 9 On the other hand, in order to ensure that the baffle 620 is lifted and lowered smoothly, the waists of the top frame 710 are relatively flat, and there is a certain distance between the bottom corner of the top frame 710 and the discharge screw 400. The belly hole of the top frame 710 in this distance area is suitable for naturally discharging some wood chips in advance. Compared with the discharge screw 400, no power source is required.

[0076] In some embodiments of the present invention, a roller is accommodated in the limiting groove 110. Figure 8 , Fig. 9 The top frame 710 and the top block 720 are both provided with a plurality of first recesses suitable for riding on corresponding rollers at the bottom edge, and the top frame 710 and the top block 720 are both suitable for riding on the rollers and moving along the limited floor groove 110. In the present invention, the top frame 710 and the top block 720 can move smoothly with the discharge screw 400, reducing the resistance of the traveling frame 320 driving the top frame 710 and the top block 720, and the top frame 710 and the top block 720 can more effectively shovel the blocking piece 620 and the wood chips in the limited floor groove 110.

[0077] Reference Figure 8In some embodiments of the present invention, a shield 721 is connected to the inner side of the top block 720. The shield 721 is suitable for isolating the lower end of the baffle 620 that has been lifted by the top block 720 from the wood chip. The shield 721 is suitable for isolating the section of the limited floor groove 110 that has been pulled out of the baffle 620 from the wood chip. On the other hand, the body of the top block 720 can be a frame, which is lighter, and the shield 721 is thin and suitable for covering the belly hole of the top block 720; the body of the top block 720 can also be a closed plate, and the shield 721 is presented as a shield of the top block body. The shield 721 is preferably formed integrally with the top block body.

[0078] Reference Fig. 9 In some embodiments of the present invention, the top frame 710 is trapezoidal, and a second recess 711 is provided on the top edge of the top frame 710. The second recess 711 is provided with a follower screw 712 extending along the top edge. The follower screw 712 is rotatably connected to the top frame 710, and the baffle 620 on any waist of the top frame 710 is suitable for transitioning to the other waist through the follower screw 712. When wood chips are entrained between the climbing baffle 620 and the top frame 710, the entrained wood chips will climb onto the follower screw 712, and then move along the axial direction of the follower screw 712. Because the follower screw 712 is also driven to rotate, the follower screw 712 pushes the entrained wood chips to both sides of the top frame 710, so that the wood chips are out of the entrainment.

[0079] Reference Figure 3 , Figure 4 In some embodiments of the present invention, a notch is provided on the discharge side of the stacking area 100 and is connected to a limiting and guiding bar 130. The discharge side of the stacking area 100 and the limiting and guiding bar 130 jointly define the notch as a corresponding limiting ground groove 110. The limiting and guiding bar 130 is provided with an inclined eave suitable for guiding the wood chips to the conveyor belt 200.

[0080] Reference Figure 1 In some embodiments of the present invention, a plurality of feed belts 800 are distributed axially above the stacking area 100, and the plurality of feed belts 800 may store the same wood or different woods. Correspondingly, a plurality of discharge screws 400 may be provided, and each discharge screw 400 is rotatably connected to a different traveling frame 320; each discharge screw 400 may be used to scrape the same wood or different woods.

[0081] On the other hand, one end of the feed belt 800 feeds wood chips into the stockpile 100, and the other end can receive wood from the feed hopper, which is suitable for receiving wood chips dumped by vehicles; the other end of the feed belt 800 can also receive wood chips produced by a chipper, which is obtained by crushing wood, branches, etc., and is stored in the stockpile 100 through the feed belt 800. The feed belt 800 generally needs to be tilted, and the lower end is suitable for wood chips falling from vehicles or chippers.

[0082] In some embodiments of the present invention, the stacking area 100 is provided with a re-stacking fence 900 that is higher than the fence 610 and the baffle 620. The re-stacking fence 900 is located in the center of the stacking area 100, and the feed belt 800 is suitable for dropping wood chips into the re-stacking fence 900. According to the characteristics of the material pile, the fence is provided at the center of the stacking area 100 to further increase the stacking height of the wood chip warehouse.

[0083] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Any modification or equivalent substitution that does not depart from the spirit and scope of the present invention shall be included in the scope of the technical solution of the present invention.

Claims

1. A wood chip storage, characterized in that: include: The stockpile area is suitable for storing wood chips; a conveyor belt arranged with the pile area; a track aligned with the stack area; A discharge screw rod spans across the pile area, and is suitable for pushing wood chips at the bottom edge of the wood chip pile in the pile area to the conveyor belt when rotating. Both ends of the discharge screw rod are respectively rotatably connected to corresponding traveling frames, and at least one traveling wheel of the traveling frame is transmission-connected to a traveling motor. The traveling frame is suitable for walking along the track to adjust the discharge screw rod along the pile area.

2. The wood chip storage base according to claim 1, characterized in that: The discharge screw is rotatably connected to a baffle, which is suitable for flipping to the front side or the rear side of the discharge screw. The baffle is used to define a discharge channel suitable for the rotation of the discharge screw together with the wood chip pile.

3. The wood chip storage base according to claim 1, characterized in that: The discharging screw drive is connected to a torque sensor, and the traveling motor and the torque sensor are both electrically connected to a central processing unit. The central processing unit is suitable for controlling the traveling motor to perform feed according to the feedback value of the torque sensor being lower than a threshold value, and the central processing unit is suitable for controlling the traveling motor to pause according to the feedback value of the torque sensor being higher than a limit value.

4. The wood chip storage bin according to claim 1, characterized in that: The traveling frame is provided with a front limit proximity switch suitable for detecting that the traveling frame moves to the front limit of the stacking area, and a rear limit proximity switch suitable for detecting that the traveling frame moves to the rear limit of the stacking area. The front limit proximity switch, the rear limit proximity switch and the traveling motor are all electrically connected to the central processing unit. The central processing unit is suitable for controlling the traveling motor to adjust backward as the feed direction according to the detection of the front limit proximity switch, and the central processing unit is suitable for controlling the traveling motor to adjust forward as the feed direction according to the detection of the rear limit proximity switch.

5. The wood chip storage according to any one of claims 1 to 4, characterized in that: Walls are set at both ends of the stacking area, and multiple baffles are arranged axially on both sides of the stacking area. Adjacent baffles are spliced, and limited ground grooves and limited skylights are set on both sides of the stacking area. The limited ground grooves are suitable for accommodating the corresponding lower ends of the multiple baffles, and the limited skylights are suitable for the baffles to move up and down. The discharging screw is rotatably connected to a top frame at one end close to the conveyor belt, and is rotatably connected to a top block at the other end. The top frame and the top block are both triangular or trapezoidal, and the bottom edge is suitable for being accommodated in the limited ground groove, and the two waists are suitable for the baffles to climb or slide down, and the belly hole of the top frame is suitable for discharging wood chips.

6. The wood chip storage base according to claim 5, characterized in that: The top frame is trapezoidal, and a second recess is provided on the top edge of the top frame. The second recess is provided with a follower screw extending along the top edge. The follower screw is rotatably connected to the top frame, and the baffle on any waist of the top frame is suitable for transitioning to the other waist through the follower screw.

7. The wood chip storage base according to claim 5, characterized in that: A plurality of feed belts are distributed above the stack area at intervals in the axial direction.

8. A method for discharging wood chips from a stockpile, characterized in that: The following steps are involved: Stockpiling, wood chips are dumped into the stockpile area to form a wood chip pile in the stockpile area; The cutting tool is fed in, and the discharge screw is squeezed toward the wood chip pile, so that the first discharge wood chips are stored in the thread gap of the discharge screw; Discharging, the discharging screw rotates, and the threaded sheet of the discharging screw drives the first row of wood chips to move along the axial direction of the discharging screw, and the first row of wood chips is scraped to the conveyor belt; Discharging: The conveyor belt rotates cyclically, and the wood chips in the pile area are discharged outward through the conveyor belt; When the discharge screw rotates, the discharge screw continuously or intermittently squeezes the wood chip pile, so that one or more layers of the first discharge wood chips exist in the thread gap of the discharge screw, and the conveyor belt continuously rotates in a cycle.

9. The method for discharging wood chips from a stockpile according to claim 8, characterized in that: In the feeding step, the enclosure is flipped to the front or rear side of the discharge screw, and the discharge screw drags the enclosure to squeeze toward the wood chip pile together. The enclosure and the wood chip pile together define a discharge channel suitable for the rotation of the discharge screw.

10. The method for discharging wood chips from a stockpile according to claim 8, characterized in that: In the feeding step, the traveling frame drives the discharging screw to move forward or backward for adjustment, and the discharging screw drives the top frame and the top block to move, so that one waist of the top frame and the top block is relatively raised by the corresponding baffle plate, and the other waist is relatively slid down by the corresponding baffle plate.

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