A wing bag sand barrier laying device

Abstract

The present invention proposes a wing bag sand barrier laying device, comprising a main frame, with running gears provided on both sides of the main frame, and a sand opening and gathering device provided in front of the main frame; the main frame further comprising a sub-frame located between the running gears, with a front end hinged to the front side of the main frame and a rear end controlled by a first lifting device to swing up and down; the device further comprises a sand lifting and conveying device, a guide device, a binding device, and a sand filling device fixed to the sub-frame and located behind the sand opening and gathering device; a holding shaft is provided on the main frame or the sub-frame, and a rolled wing bag sand barrier is placed on the holding shaft, which guides the strip of wing bag sand barrier into a roll through a guide mechanism, and then sends it to the guide device, binding device, and sand filling device, and finally outputs it from the rear of the main frame; the main frame further comprises a power source. The present invention has the advantage of being applicable to unmanned and automated laying of wing bag sand barriers in desert areas.

Description

Technical Field

[0001] The invention relates to the field of feather bag sand barrier laying devices, and in particular to a feather bag sand barrier laying device. Background Art

[0002] Sand barriers, also known as mechanical sand barriers or wind barriers, are constructed from materials such as firewood, straw, clay, branches, planks, and pebbles. They are effective engineering sand fixation measures that reduce wind speed and stabilize the sand surface. Their primary function is to stabilize mobile and semi-mobile sand dunes.

[0003] Flat-laid sand barriers are sand-fixing barriers that use firewood, grass, pebbles, clay or asphalt emulsions, polyacrylamide and other high-molecular polymers to cover or spray on the sand surface to isolate the contact between wind and loose sand layers, so that when the wind and sand flow passes through the sand surface, it will not cause wind erosion and will not increase the sand content in the wind and sand flow, so that the sand will not be moved even when the wind passes, and the quicksand will be fixed in place.

[0004] Vertical sand barriers are mostly sand-accumulating barriers. Their principle of sand control is as follows: Any obstacle encountered along the sand flow's path reduces wind speed, causing some of the carried sand to settle around the obstacle. This reduces the amount of sand carried by the wind and thus helps prevent and control wind-blown sand damage. Furthermore, vertical sand barriers, when deployed in multiple rows, can reduce wind speed between barriers, thereby mitigating or preventing further sand blowing and wind erosion between barriers.

[0005] At present, the laying of wing bag sand barriers has problems such as low degree of automation, lack of mechanization and intelligent equipment, resulting in excessively high labor costs. Therefore, a wing bag sand barrier laying device suitable for unmanned and automated laying of sand barriers in the desert was designed and developed. Summary of the Invention

[0006] Based on the above problems, the purpose of the present invention is to provide a wing bag sand barrier laying device that can be used for unmanned and automatic laying of wing bag sand barriers in desert areas.

[0007] In response to the above problems, the following technical solutions are provided: a feather bag sand barrier laying device, comprising a main frame, walking devices are provided on both sides of the main frame, and a sand opening and gathering device is provided in front of the main frame; the main frame is also provided with a sub-frame located between the walking devices, the front end of which is hinged to the front side of the main frame, and the rear end is controlled to swing up and down by a first lifting device; it also includes a sand lifting and conveying device, a guide device, a binding device and a sand filling device fixed on the sub-frame and located behind the sand opening and gathering device; a holding shaft is provided on the main frame or the sub-frame, and the rolled feather bag sand barrier is placed on the holding shaft, and the strip-shaped feather bag sand barrier is guided into a roll through a guiding mechanism and then sent to the guide device, the binding device and the sand filling device, and finally output from the rear of the main frame; the main frame is also provided with a power source.

[0008] In the above structure, the first lifting device is a winch, which controls the swing of the sub-frame through a cable to lift or lower the sand lifting and conveying device, the outlet device, the binding device and the sand filling device; the power source is an internal combustion engine, which cooperates with the hydraulic station to provide power for the whole machine; the walking device is driven by the power source to drive the wing bag sand barrier laying device forward; the sand opening and gathering device can remove obstacles or loosen the sand, and then the loosened sand is lifted to the sand filling device through the sand lifting and conveying device and filled into the wing bag sand barrier, and the wing bag sand barrier is exported in cooperation with the outlet device, and the wing bag sand barrier is bound by the binding device, thereby realizing the laying of the wing bag sand barrier, which has the advantages of high degree of automation and fast laying efficiency (the guiding mechanism is the same as the existing packaging bag forming principle, which will not be described in detail here).

[0009] The present invention is further provided that the sand opening and collecting device includes a drum frame, the rear end of the drum frame is hinged to the main frame, the front end of the drum frame is provided with a sand opening drum which is driven to rotate by a first drive, and the front end of the drum frame is controlled to swing up and down by a second lifting device; the outer wall of the sand opening drum is surrounded by a first sand collecting blade and a second sand collecting blade which are spirally arranged along its axial direction, the first sand collecting blade and the second sand collecting blade are spaced apart from each other in the axial direction of the sand opening drum so that the two form a sand collecting section at the outer wall of the sand opening drum between the first sand collecting blade and the second sand collecting blade, and the spiral directions of the first sand collecting blade and the second sand collecting blade are opposite to each other; the outer edge of the first sand collecting blade and the second sand collecting blade on the side away from the central axis of the sand drum is provided with sand opening teeth spaced apart along the spiral direction.

[0010] In the above structure, the sand-opening drum is driven to rotate by the first driver, and the first sand-gathering blade and the second sand-gathering blade are used to contact the sand surface to loosen and level the hardened sand or uneven sand areas, and the upper loosened sand is driven and gathered in the axial direction of the sand-opening drum, thereby forming a sand gathering area. The sand-opening teeth can effectively loosen the hardened and agglomerated sand, and can also clean and break obstacles, so as to facilitate the sand lifting and conveying device to carry out sand taking and filling operations; the second lifting device is a winch, which controls the sand-opening depth of the sand-opening drum by driving the cable. When the sand-opening drum encounters an obstacle, it can automatically swing up and retreat to protect the sand-opening drum; the first driver is preferably a hydraulic motor.

[0011] The present invention is further configured such that hard alloy is welded on the tooth walls on both sides of the sand-opening teeth facing toward or / and facing away from the rotation direction of the sand-opening drum.

[0012] In the above structure, the toughness of the sand cutting teeth themselves is maintained while the wear resistance of the parts in contact with the sand is ensured.

[0013] The present invention is further configured as follows: the sand lifting and conveying device includes a sand lifting auger driven by a second drive, the lower end of which is toward the rear of the main frame and the upper end is inclined toward the front of the main frame, the sand lifting auger is offset from the dividing line between the main frame or the auxiliary frame; the lower and upper ends of the sand lifting auger are respectively provided with a sand taking port and a sand discharge port; the lower end of the sand lifting auger is provided with a sand collecting plate, and the sand collecting plates are two pieces arranged at an angle to each other and whose projection in the axial direction of the sand lifting auger is V-shaped, the sand taking port is located at the bottom of the V-shaped notch of the two sand collecting plates, and the V-shaped notches of the sand taking port and the two sand collecting plates are facing the front of the main frame; the side of the sand collecting plate facing the sand discharge port is provided with a sand pressing plate fixed on the auxiliary frame, and the height of the sand pressing plate near the V-shaped notch of the two sand collecting plates is higher than the height of the sand pressing plate near the bottom of the V-shaped groove of the two sand collecting plates.

[0014] In the above structure, when the wing bag sand barrier laying device moves forward, the loosened sand is guided and gathered toward the bottom of the V-shaped groove of the two sand collecting plates through the two sand collecting plates, so as to ensure the sand lifting efficiency of the sand lifting auger during lifting and improve the fullness of the sand lifting. At the same time, the sand pressing plate can also effectively suppress the dust at the sand taking port, reduce dust pollution, and realize energy-saving, environmentally friendly and efficient desert sand taking. The inclined sand pressing plate lowers the height of the sand when the wing bag sand barrier laying device moves forward, further improving the sand lifting fullness of the sand lifting auger; the second drive is preferably a hydraulic motor.

[0015] The present invention is further configured as follows: the export device includes an export fixing frame fixedly connected to the sub-frame, and the export fixing frame is hinged with an export swing frame; it also includes an extrusion roller installed on the adjustment frame and driven to rotate by a third driver; the export swing frame, the adjustment frame, the third driver and the extrusion roller are two groups, which are symmetrically arranged with each other, and the two export swing frames are connected by a synchronous shaft so that the two can swing synchronously at the same angle relative to the export fixing frame during adjustment; the hinge axis of the export swing frame and the export fixing frame is arranged at 90 degrees perpendicular to the axis of the extrusion roller, and the axes of the two extrusion rollers are parallel to each other; the adjustment frame is slidably arranged relative to the export swing frame to control the spacing distance between the two extrusion rollers.

[0016] In the above structure, after the guiding mechanism guides the strip-shaped feather bag sand barrier into a roll, the feather bag sand barrier guided into the roll is controlled by the opposite rolling of the two squeezing rollers. The opposite rolling and squeezing can ensure that the height of the two sides of the feather bag sand barrier is not easily misaligned when it is conveyed to the downstream binding device, and control the output traction speed of the feather bag sand barrier, assisting the downstream binding device to provide positioning and shaping for the wing bag sand barrier; when adjusting, the output swing frame realizes swing adjustment and positioning through the adaptation of the fan-shaped groove and the swing frame screw to control the pitch angle of the squeezing roller during output. Generally, the axis of the squeezing roller is perpendicular to the output direction of the feather bag sand barrier. If, in the traction state, the feather bag sand barrier has a downward tendency relative to the squeezing roller, it is necessary to adjust the output swing frame to make the squeezing roller rise (that is, the output angle is higher than the original output direction of the wing bag sand barrier), so that when the squeezing roller rolls into the feather bag sand barrier, the wing bag sand barrier can form an upward lifting traction force to offset the downward tendency, thereby ensuring the reliability of the output traction of the wing bag sand barrier.

[0017] The present invention is further configured such that the outer wall of the squeezing roller is provided with a rubber layer, and the two squeezing rollers squeeze and roll against each other.

[0018] In the above structure, the rubber coating can improve the friction force, reduce or avoid the slipping phenomenon when the squeezing roller pulls the wing bag sand barrier, and at the same time, the rubber coating can use its own elasticity to achieve certain wear compensation and adaptive fitting effects.

[0019] The present invention is further configured such that the adjustment frame includes a driver support plate and a squeeze roller support plate, the driver support plate and the squeeze roller support plate are connected and fixed by a connecting rod, and the third driver is fixed on the driver support plate; the squeeze roller support plate is provided with two support rollers that are spaced apart from each other and supported tangentially to the squeeze roller.

[0020] In the above structure, the two supporting rollers are both tangentially supported by the squeezing roller, thereby improving the rigidity of the squeezing roller.

[0021] The present invention is further configured such that one end of the squeezing roller is connected to the power of the third driver, and the supporting roller is supported by one end of the squeezing roller away from the third driver.

[0022] In the above structure, the end of the squeezing roller away from the third driver is a cantilever end, so the rigidity is poor, and the overall rigidity is improved by supporting it through the support roller.

[0023] The present invention is further configured such that an adapting groove is provided on an outer wall of the squeezing roller, and the supporting roller is adapted to the adapting groove.

[0024] In the above structure, the adaption groove is adapted to the support roller, which can play a good guiding role and ensure the relative axial position between the squeezing roller and the support roller. If the support roller directly contacts the outer wall of the squeezing roller, due to the problem of excessive concentration of contact stress, local wear of the rubber layer in this part will occur.

[0025] The present invention is further configured such that the derivation swing frame is provided with a slide groove, and the driver support plate and the squeeze roller support plate are slidably matched relative to the slide groove; and a clamp is further provided between the derivation swing frame and the adjustment frame.

[0026] In the above structure, the compactor is used to adjust the spacing between the two sets of squeezing rollers and provide a certain squeezing force therebetween.

[0027] The present invention is further configured such that the compressor includes a sliding rod fixed on an adjusting frame and capable of sliding relative to a guide swing frame, and a high-strength rubber sleeve is provided on the sliding rod; the guide swing frame is provided with a push plate abutting against the end face of the high-strength rubber sleeve, and the guide swing frame is provided with an adjusting screw for adjusting the position of the push plate.

[0028] In the above structure, the rubber sleeve is sleeved on the sliding rod, one end of the rubber sleeve is against the adjusting frame, and the other end is against the push plate. The adjusting screw cooperates with the thread of the lead-out swing frame, so that the end of the adjusting screw is in contact with the push plate and the thrust is applied to the rubber sleeve. When the two extrusion rollers contact and extrude, the rubber sleeve is further compressed to provide elastic energy storage, so that the two extrusion rollers always maintain the extrusion force.

[0029] The present invention is further configured such that the third driver is a stepping motor or a servo motor.

[0030] In the above structure, the third driver can also be driven by a hydraulic motor or connected to the power source of the feather bag sand barrier laying device for driving.

[0031] The present invention is further configured as follows: the binding device includes a binding fixing frame fixedly connected to the sub-frame, the binding fixing frame is provided with a binding swing frame, one end of the binding swing frame is hinged to the binding fixing frame, and the other end is arranged to swing downward, and the swing direction of the downward end of the binding swing frame is in the same direction as the output direction of the wing bag sand barrier; a swing limiting mechanism and a reset device are provided between the binding fixing frame and the binding swing frame; a binding port is provided at the swinging end of the binding swing frame, and a binder driven by a fourth driver is provided in the binding port.

[0032] In the above structure, the fourth driver is used to control the binder to bind the two sides of the wing bag sand barrier. Since the binding swing frame can swing relative to the binding fixed frame, when binding, when the stapler penetrates the wing bag sand barrier, the binder will move in the output direction of the wing bag sand barrier, thereby achieving the purpose of synchronous following. At the same time, due to the use of the binder for binding, the reliability of the work can be effectively guaranteed in a windy and sandy environment, avoiding the shortcomings of the existing sewing equipment with too many precision parts and too high lubrication requirements, which easily lead to sand entering and adhering to the inside and affecting its normal operation; the fourth driver is preferably a cylinder.

[0033] The present invention is further configured such that the swing limiting mechanism includes a swing groove arranged along the swing direction, and a swing pin adapted to the swing groove to limit its reciprocating swing limit position, the swing groove is opened on the binding swing frame, and the swing pin is located on the binding fixed frame; the reset device controls the binding swing frame to swing to the side opposite to the output direction of the feather bag sand barrier; the binder is a stapler.

[0034] In the above structure, the swing groove is adapted to the swing pin to limit the swing angle of the binding swing frame. When the binding is completed, the binding swing frame, which is swung by the traction of the wing bag sand barrier, is reset by the reset device to return to its position for the next binding.

[0035] The present invention is further configured such that the reset device is a tension spring, both ends of which are respectively connected to the tension spring ears of the binding fixing frame and the binding swing frame.

[0036] In the above structure, the two ends of the tension spring are respectively hooked on the tension spring ears of the binding fixing frame and the tension spring ears of the binding swing frame.

[0037] The present invention is further configured such that the binding fixing frame includes a fixing plate and a support beam installed on the fixing plate and extending in the direction of outputting the feather bag sand barrier, and the binding swing frame is hinged on the extending end of the support beam.

[0038] In the above structure, the binding swing frame and the lead-out device are separated to avoid interference between the two.

[0039] The present invention is further configured as follows: the sand filling device includes a sand filling auger fixedly connected to the auxiliary frame and driven by a fifth dynamic drive, the front end of the sand filling auger faces the front of the main frame and is provided with a sand inlet, and the rear end faces the rear end of the main frame and is provided with a sand filling port, and the sand filling port is located below the sand discharge port; it also includes a sand barrier conveying mechanism located on one side of the output direction of the sand filling port, the sand barrier conveying mechanism includes a conveying frame and a driving wheel installed on the conveying frame and driven by a sixth dynamic drive, the driving wheels are two groups and are arranged at intervals in the output direction of the sand filling port; it also includes a conveyor belt arranged on the two driving wheels and driven by the driving wheels, the upper belt surface of the conveyor belt runs in the same direction as the output direction of the sand filling port, and the upper belt surface of the conveyor belt is located below the cross-section of the sand filling auger.

[0040] In the above structure, when the sand-filling auger fills the wing bag sand barrier with sand, the wing bag sand barrier that has been filled with sand can first fall on the sand barrier conveying mechanism, and then be transported to the ground through the sand barrier conveying mechanism, thereby reducing the situation where the wing bag sand barrier falls due to its own weight after being filled with sand and pulls the unfilled wing bag sand barrier to slide out, resulting in incomplete sand filling; at the same time, the conveyor belt can control the conveying speed through the sixth dynamic drive, thereby providing a certain resistance to the output of the wing bag sand barrier, forcing the sand filled into the sand filling port to fill the wing bag sand barrier as much as possible, thereby ensuring the quality of sand filling.

[0041] The present invention is further configured such that a conveying tooth plate is provided on the outer belt wall of the conveyor belt, and the conveying tooth plates are arranged at intervals toward the output direction of the sand filling port. The conveyor belt is formed by connecting a number of chain plates, and each chain plate is provided with one or more conveying tooth plates. A middle section of the conveying tooth plate facing away from the chain plate is concave to form a load-bearing depression.

[0042] In the above structure, the conveying tooth plate can increase the friction between the chain plate and the wing bag sand barrier, reducing slippage between each other; the chain plate cooperates with the conveying tooth plate to further enhance its own rigidity to carry the wing bag sand barrier after it has been filled with sand; the carrying depression can be more adapted to the bottom of the wing bag sand barrier after it has been filled with sand, and reduce the deformation problem caused by stress concentration at the bottom of the wing bag sand barrier under its own weight.

[0043] The present invention is further configured such that the conveyor frame is further provided with a support plate located between the two driving wheels and used for supporting and abutting against the lower surface of the upper belt surface of the conveyor belt.

[0044] In the above structure, the support plate can improve the supporting rigidity of the conveyor belt between the two driving wheels.

[0045] The present invention is further configured such that the outer wall of the sand filling port is provided with a molding cylinder arranged concentrically therewith.

[0046] In the above structure, the shaping cylinder is used to guide the wing bag sand barrier into a cylinder.

[0047] The present invention is further configured such that the fifth dynamic driver is located at one end of the sand-filling auger provided with a sand inlet.

[0048] In the above structure, the fifth dynamic driver is a hydraulic motor; the sixth dynamic driver is a stepping motor or a servo motor.

[0049] The beneficial effects of the present invention are as follows: the first lifting device is a winch, which controls the swing of the sub-frame through a cable to lift or lower the sand lifting and conveying device, the outlet device, the binding device and the sand filling device; the power source is an internal combustion engine, which cooperates with the hydraulic station to provide power for the entire machine; the walking device is driven by the power source to drive the wing bag sand barrier laying device forward; the sand opening and gathering device can remove obstacles or loosen the sand, and then the loosened sand is lifted to the sand filling device through the sand lifting and conveying device and filled into the wing bag sand barrier, and the wing bag sand barrier is exported in cooperation with the outlet device, and the wing bag sand barrier is bound by the binding device, thereby realizing the laying of the wing bag sand barrier, which has the advantages of high degree of automation and fast laying efficiency (the guiding mechanism is the same as the existing packaging bag forming principle, which will not be described in detail here). BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a schematic diagram of the right-view orthographic projection structure of the present invention.

[0051] Figure 2It is a schematic diagram of the three-dimensional structure from the first viewing angle of the present invention.

[0052] Figure 3 This is a schematic diagram of the three-dimensional structure from a second viewing angle of the present invention.

[0053] Figure 4 It is a schematic diagram of the three-dimensional structure from a third viewing angle of the present invention.

[0054] Figure 5 This is a schematic diagram of the three-dimensional structure of the auxiliary frame of the present invention from a first perspective.

[0055] Figure 6 This is a schematic diagram of the three-dimensional structure of the auxiliary frame of the present invention from a second viewing angle.

[0056] Figure 7 This is a schematic diagram of the three-dimensional structure of the sand opening and gathering device of the present invention from the first perspective.

[0057] Figure 8 This is a schematic diagram of the three-dimensional structure of the sand opening and gathering device of the present invention from a second perspective.

[0058] Figure 9 For the present invention Figure 7 Schematic diagram of the enlarged structure of part A.

[0059] Figure 10 It is a schematic diagram of the right-side orthographic projection structure of the sand lifting and conveying device of the present invention.

[0060] Figure 11 It is a bottom view structural schematic diagram of the sand lifting and conveying device of the present invention.

[0061] Figure 12 This is a schematic diagram of the three-dimensional structure of the sand lifting and conveying device of the present invention from a first perspective.

[0062] Figure 13 This is a schematic diagram of the three-dimensional structure of the sand lifting and conveying device of the present invention from a second perspective.

[0063] Figure 14 This is a schematic diagram of the three-dimensional structure of the export device of the present invention from the first perspective.

[0064] Figure 15 This is a schematic diagram of the third perspective structure of the export device of the present invention.

[0065] Figure 16 It is a schematic diagram of the three-dimensional structure of the export swing frame of the export device of the present invention in the swinging state.

[0066] Figure 17 This is a schematic diagram of the exploded three-dimensional structure of the export device of the present invention from a first perspective.

[0067] Figure 18 This is a schematic diagram of the exploded three-dimensional structure of the export device of the present invention from a second perspective.

[0068] Figure 19 It is a schematic diagram of the three-dimensional structure of the binding device of the present invention in the returned state of the binding swing frame.

[0069] Figure 20 It is a side view of the binding swing frame of the binding device of the present invention in the returned state.

[0070] Figure 21 It is a schematic diagram of the three-dimensional structure of the binding frame of the binding device of the present invention in a swinging state.

[0071] Figure 22 It is a side view of the binding frame of the binding device of the present invention in a swinging state.

[0072] Figure 23 It is a schematic diagram of the three-dimensional structure of the binding device of the present invention.

[0073] Figure 24 This is a schematic diagram of the three-dimensional structure of the sand filling device of the present invention from the first perspective.

[0074] Figure 25 This is a schematic diagram of the three-dimensional structure of the sand filling device of the present invention from a second viewing angle.

[0075] Figure 26 For the present invention Figure 24 Schematic diagram of the enlarged structure of part B.

[0076] Figure 27 This is a schematic diagram of the layout structure of the wing bag sand barrier of the present invention.

[0077] Figure 28 It is a schematic diagram of the cross-sectional structure of the wing bag sand barrier of the present invention.

[0078] Meaning of the numbers in the figure: 1-main frame; 10-traveling device; 11-first lifting device; 12-auxiliary frame; 13-holding shaft; 14-wing bag sand barrier; 2-sand opening and gathering device; 20-drum frame; 21-first drive; 22-sand opening drum; 221-first sand gathering blade; 222-second sand gathering blade; 223-sand collecting section; 224-sand opening tooth; 2241-hard alloy; 23-second lifting device; 3-sand lifting and conveying Device; 30-sand lifting auger; 301-sand taking port; 302-sand discharge port; 31-second drive; 32-sand collecting plate; 33-sand pressing plate; 4-export device; 40-export fixing frame; 401-swing frame screw; 41-export swing frame; 411-synchronizing shaft; 412-sector groove; 413-slide; 42-adjusting frame; 421-drive support plate; 422-squeeze roller support plate; 4221-support roller; 423-connection Rod; 43-third drive; 44-squeezing roller; 441-rubber layer; 442-adapting slot; 45-pressing device; 451-sliding rod; 452-rubber sleeve; 453-push plate; 454-adjusting screw; 5-binding device; 50-binding fixed frame; 501-swing pin; 502-fixing plate; 503-support beam; 51-binding swing frame; 511-binding port; 512-swing slot; 52-swing limit mechanism; 53-reset Device; 531-tension spring ear; 54-fourth driver; 55-binding device; 6-sand filling device; 60-sand filling auger; 601-sand inlet; 602-sand filling port; 603-molding cylinder; 61-fifth dynamic driver; 70-sand barrier conveying mechanism; 71-conveying frame; 711-support plate; 72-sixth dynamic driver; 73-driving wheel; 74-conveyor belt; 741-conveying tooth plate; 7411-bearing recess; 742-chain plate. DETAILED DESCRIPTION

[0079] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0080] refer to Figures 1 to 28 ,like Figures 1 to 28The shown device for laying a feather bag sand barrier includes a main frame 1, with walking devices 10 on both sides of the main frame 1, and a sand opening and gathering device 2 in front of the main frame 1; the main frame 1 is also provided with a sub-frame 12 located between the walking devices 10, with the front end hinged to the front side of the main frame 1, and the rear end controlled to swing up and down by a first lifting device 11; it also includes a sand lifting and conveying device 3, a guide device 4, a binding device 5 and a sand filling device 6 fixed on the sub-frame 12 and located behind the sand opening and gathering device 2; a holding shaft 13 is provided on the main frame 1 or the sub-frame 12, and a rolled feather bag sand barrier 14 is placed on the holding shaft 13, and the strip-shaped feather bag sand barrier 14 is guided into a tube by a guiding mechanism and then sent to the guide device 4, the binding device 5 and the sand filling device 6, and finally output from the rear of the main frame 1; the main frame 1 is also provided with a power source (not shown in the figure).

[0081] In the above structure, the first lifting device 11 is a winch, which controls the swing of the sub-frame 12 through a cable to lift or lower the sand lifting and conveying device 3, the outlet device 4, the binding device 5 and the sand filling device 6; the power source (not shown in the figure) is an internal combustion engine, which cooperates with the hydraulic station (not shown in the figure) to provide power for the entire machine; the walking device 10 is driven by the power source (not shown in the figure) to drive the wing bag sand barrier laying device forward; the sand opening and gathering device 2 can clear obstacles or loosen the sand, and then the loosened sand is lifted to the sand filling device 6 through the sand lifting and conveying device 3 and filled into the wing bag sand barrier 14, and cooperates with the outlet device 4 to export the wing bag sand barrier 14, and the binding device 5 binds the wing bag sand barrier 14, thereby realizing the laying of the wing bag sand barrier 14, which has the advantages of high degree of automation and fast laying efficiency (the guiding mechanism is the same as the existing packaging bag forming principle, which will not be described in detail here).

[0082] In this embodiment, Figures 1 to 9 As shown, Figure 27 and 28 As shown, the sand opening and collecting device 2 includes a drum frame 20, the rear end of the drum frame 20 is hinged to the main frame 1, and the front end of the drum frame 20 is provided with a sand opening drum 22 driven to rotate by a first driver 21, and the front end of the drum frame 20 is controlled to swing up and down by a second lifting device 23; the outer wall of the sand opening drum 22 is surrounded by a first sand collecting blade 221 and a second sand collecting blade 222 which are spirally arranged along its axial direction, and the first sand collecting blade 221 and the second sand collecting blade 222 are spaced apart from each other in the axial direction of the sand opening drum 22 so that a sand collecting section 223 is formed at the outer wall of the sand opening drum 22 between the first sand collecting blade 221 and the second sand collecting blade 222, and the spiral directions of the first sand collecting blade 221 and the second sand collecting blade 222 are opposite to each other; the outer edge of the first sand collecting blade 221 and the second sand collecting blade 222 on the side away from the central axis of the sand drum 22 is provided with sand opening teeth 224 spaced apart along the spiral direction.

[0083] In the above structure, the sand-opening drum 22 is driven to rotate by the first driver 21, and the first sand-collecting blade 221 and the second sand-collecting blade 222 are used to contact the sand surface to loosen and level the hardened sand or uneven sand areas, and the upper loosened sand is driven and gathered in the axial direction of the sand-opening drum 22, thereby forming a sand gathering area. The sand-opening teeth 224 can effectively loosen the hardened and agglomerated sand, and can also clean and crush obstacles, so as to facilitate the sand-lifting and conveying device 3 to perform sand-taking and filling operations; the second lifting device 23 is a winch, which controls the sand-opening depth of the sand-opening drum 22 by driving the cable. When the sand-opening drum 22 encounters an obstacle, it can automatically swing up and retreat to protect the sand-opening drum 22; the first driver 21 is preferably a hydraulic motor.

[0084] In this embodiment, hard alloys 2241 are welded on the tooth walls on both sides of the sand-cutting teeth 224 facing or / and facing away from the rotation direction of the sand-cutting drum 22 .

[0085] In the above structure, the sand-cutting teeth 224 maintain their toughness while ensuring the wear resistance of the parts in contact with sand.

[0086] In this embodiment, Figures 1 to 6 、 Figures 10 to 13 、 Figure 27 and 28 As shown, the sand lifting and conveying device 3 includes a sand lifting auger 30 with a lower end facing the rear of the main frame 1 and an upper end facing the front of the main frame 1 and is inclined. The sand lifting auger 30 is driven by a second driver 31. The sand lifting auger 30 is offset from the dividing line between the main frame 1 or the auxiliary frame 12; the lower and upper ends of the sand lifting auger 30 are respectively provided with a sand taking port 301 and a sand discharging port 302; the lower end of the sand lifting auger 30 is provided with a sand collecting plate 32, and the sand collecting plate 32 is two pieces arranged at an angle to each other and arranged at the sand lifting auger 3 0 The projection in the axial direction is V-shaped, and the sand taking port 301 is located at the bottom of the V-shaped notch of the two sand collecting plates 32. The sand taking port 301 and the V-shaped notches of the two sand collecting plates 32 face the front of the main frame 1; the side of the sand collecting plate 32 facing the sand discharge port 302 is provided with a sand pressing plate 33 fixed on the sub-frame 12, and the height H1 of the sand pressing plate 33 near the V-shaped notch of the two sand collecting plates 32 is higher than the height H2 of the sand pressing plate 33 near the bottom of the V-shaped groove of the two sand collecting plates 32.

[0087] In the above structure, when the wing bag sand barrier laying device moves forward, the loosened sand is guided and gathered toward the bottom of the V-shaped groove of the two sand collecting plates 32, so as to ensure the sand lifting efficiency of the sand lifting auger 30 during lifting, and improve the fullness of the sand lifting. At the same time, the sand pressing plate 33 can also effectively suppress the dust at the sand taking port 301, reduce dust pollution, and realize energy-saving, environmentally friendly and efficient desert sand taking. The inclined sand pressing plate 33 lowers the height of the sand when the wing bag sand barrier laying device moves forward, further improving the sand lifting fullness of the sand lifting auger 30; the second driver 31 is preferably a hydraulic motor.

[0088] In this embodiment, Figures 1 to 6 、 Figures 14 to 18 、 Figure 27 and 28 As shown, the export device 4 includes an export fixed frame 40 fixedly connected to the sub-frame 12, and the export fixed frame 40 is hinged with an export swing frame 41; it also includes an extrusion roller 44 installed on the adjustment frame 42 and driven to rotate by a third driver 43; the export swing frame 41, the adjustment frame 42, the third driver 43 and the extrusion roller 44 are two groups, which are symmetrically arranged with each other, and the two export swing frames 41 are connected by a synchronization shaft 411 so that the two can swing synchronously at the same angle relative to the export fixed frame 40 when adjusted; the hinge axis of the export swing frame 41 and the export fixed frame 40 is hinged at 90 degrees to the axis of the extrusion roller 44, and the axes of the two extrusion rollers 44 are parallel to each other; the adjustment frame 42 is slidably arranged relative to the export swing frame 41 to control the spacing distance between the two extrusion rollers 44.

[0089] In the above structure, after the guiding mechanism (not shown in the figure) guides the strip-shaped feather bag sand barrier 14 into a tube, the feather bag sand barrier 14 guided into the tube is controlled by rolling with two squeezing rollers 44. The rolling and squeezing can ensure that the height of the two sides of the feather bag sand barrier 14 is not easy to be misplaced when it is transported to the downstream binding device 5, and control the output traction speed of the feather bag sand barrier 14, and assist the downstream binding device 5 to provide positioning and shaping for the feather bag sand barrier 14; when adjusting, the output swing frame 41 is adapted to the swing frame screw 401 through the fan-shaped groove 412 to achieve swing adjustment and positioning , to control the pitch angle of the squeezing roller 44 during output. Generally, the axis of the squeezing roller 44 is perpendicular to the output direction of the wing bag sand barrier 14. For example, in the traction state, the wing bag sand barrier 14 has a downward trend relative to the squeezing roller 44. At this time, it is necessary to adjust the output swing frame 41 to make the squeezing roller 44 rise (that is, the output angle is higher than the original output direction of the wing bag sand barrier 14), so that the squeezing roller 44 can form an upward traction force for the wing bag sand barrier 14 when it rolls into the wing bag sand barrier 14 to offset the downward trend and ensure the reliability of the output traction of the wing bag sand barrier 14.

[0090] In this embodiment, the outer wall of the squeezing roller 44 is provided with a rubber layer 441 , and the two squeezing rollers 44 squeeze and roll against each other.

[0091] In the above structure, the rubber coating 441 can increase the friction force, reduce or avoid the slipping phenomenon when the squeezing roller 44 pulls the wing bag sand barrier 14, and at the same time, the rubber coating 441 can use its own elasticity to achieve certain wear compensation and adaptive fitting effects.

[0092] In this embodiment, the adjustment frame 42 includes a driver support plate 421 and a squeezing roller support plate 422. The driver support plate 421 and the squeezing roller support plate 422 are connected and fixed by a connecting rod 423. The third driver 43 is fixed on the driver support plate 421. The squeezing roller support plate 422 is provided with two support rollers 4221 that are spaced apart from each other and supported tangentially to the squeezing roller 44.

[0093] In the above structure, the two supporting rollers 4221 are both tangentially supported by the squeezing roller 44 , thereby improving the rigidity of the squeezing roller 44 .

[0094] In this embodiment, one end of the squeezing roller 44 is connected to the third driver 43 , and the supporting roller 4221 is supported by the end of the squeezing roller 44 away from the third driver 43 .

[0095] In the above structure, the end of the squeezing roller 44 away from the third driver 43 is a cantilever end, so the rigidity is relatively poor, and is supported by the supporting roller 4221 to improve the overall rigidity.

[0096] In this embodiment, an adapting groove 442 is formed on the outer wall of the squeezing roller 44 , and the supporting roller 4221 is adapted to the adapting groove 442 .

[0097] In the above structure, the adaption groove 442 is adapted to the support roller 4221, which can play a good guiding role and ensure the relative axial position between the squeezing roller 44 and the support roller 4221. If the support roller 4221 directly contacts the outer wall of the squeezing roller 44, due to the problem of excessive concentration of contact stress, local wear of the rubber coating 441 at this position will occur.

[0098] In this embodiment, the derivation swing frame 41 is provided with a slide groove 413 , and the driver support plate 421 and the squeeze roller support plate 422 are slidably matched relative to the slide groove 413 ; a clamp 45 is further provided between the derivation swing frame 41 and the adjustment frame 42 .

[0099] In the above structure, the compactor 45 is used to adjust the spacing between the two sets of squeezing rollers 44 and provide a certain squeezing force therebetween.

[0100] In this embodiment, the compressor 45 includes a slide rod 451 fixed on the adjustment frame 42 and capable of sliding relative to the derivation swing frame 41, and a high-strength rubber sleeve 452 is provided on the slide rod 451; the derivation swing frame 41 is provided with a push plate 453 that abuts against the end face of the high-strength rubber sleeve 452, and the derivation swing frame 41 is provided with an adjustment screw 454 for adjusting the position of the push plate 453.

[0101] In the above structure, the rubber sleeve 452 is sleeved on the slide rod 451, one end of the rubber sleeve 452 is against the adjustment frame 42, and the other end is against the push plate 453. The adjusting screw 454 is threadedly engaged with the guide swing frame 41, so that the end of the adjusting screw 454 is in contact with the push plate 453 and exerts thrust on the rubber sleeve 452, and further compresses the rubber sleeve 452 to provide elastic energy storage when the two squeezing rollers 44 contact and squeeze. So that the two squeezing rollers 44 always maintain the squeezing force.

[0102] In this embodiment, the third driver 43 is a stepping motor or a servo motor.

[0103] In the above structure, the third driver 43 can also be driven by a hydraulic motor or connected to the power source (not shown in the figure) of the feather bag sand barrier laying device for driving.

[0104] In this embodiment, Figures 1 to 6 、 Figures 19 to 23 、 Figure 27 and 28 As shown, the binding device 5 includes a binding fixing frame 50 fixedly connected to the sub-frame 12, and the binding fixing frame 50 is provided with a binding swing frame 51. One end of the binding swing frame 51 is hinged to the binding fixing frame 50, and the other end is set to swing downward. The swing direction of the downward end of the binding swing frame 51 is in the same direction as the output direction of the wing bag sand barrier 14; a swing limiting mechanism 52 and a reset device 53 are provided between the binding fixing frame 50 and the binding swing frame 51; a binding port 511 is provided at the swinging end of the binding swing frame 51, and a binder 55 driven by a fourth driver 54 is provided in the binding port 511.

[0105] In the above structure, the fourth driver 54 controls the binder 55 to bind the two sides of the wing bag sand barrier 14. Since the binding swing frame 51 can swing relative to the binding fixed frame 50, when binding, when the stapler 55 penetrates the wing bag sand barrier 14, the binder 55 will move following the output direction of the wing bag sand barrier 14, thereby achieving the purpose of synchronous following. At the same time, due to the use of the binder 55 for binding, the reliability of the work can be effectively guaranteed in a windy and sandy environment, avoiding the shortcomings of the existing sewing equipment with too many precision parts and too high lubrication requirements, which easily lead to sand entering and adhering to the inside and affecting its normal operation; the fourth driver 54 is preferably a cylinder.

[0106] In this embodiment, the swing limiting mechanism 52 includes a swing slot 512 arranged along the swing direction, and a swing pin 501 adapted to the swing slot 512 to limit its reciprocating swing limit position. The swing slot 512 is opened on the binding swing frame 51, and the swing pin 501 is located on the binding fixed frame 50; the reset device 53 controls the binding swing frame 51 to swing to the side opposite to the output direction of the feather bag sand barrier 14; the binder 55 is a stapler.

[0107] In the above structure, the swing groove 512 is adapted to the swing pin 501, which can limit the swing angle of the binding swing frame 51. When the binding is completed, the binding swing frame 51, which is pulled by the wing bag sand barrier 14 and swings, is reset by the reset device 53 to return to its original position for the next binding.

[0108] In this embodiment, the reset device 53 is a tension spring, and both ends thereof are connected to the tension spring ears 531 of the binding fixing frame 50 and the binding swing frame 51 respectively.

[0109] In the above structure, both ends of the tension spring are hooked on the tension spring ears 531 of the binding fixing frame 50 and the tension spring ears 531 of the binding swing frame 51 respectively.

[0110] In this embodiment, the binding fixing frame 50 includes a fixing plate 502 and a support beam 503 installed on the fixing plate 502 and extending toward the output direction of the feather bag sand barrier 14 , and the binding swing frame 51 is hinged to the extended end of the support beam 503 .

[0111] In the above structure, the binding swing frame 51 is spaced apart from the lead-out device 4 to avoid interference between the two.

[0112] In this embodiment, Figures 1 to 6 ,like Figures 24 to 28 As shown, the sand filling device 6 includes a sand filling auger 60 fixedly connected to the sub-frame 12 and driven by a fifth dynamic driver 61. The front end of the sand filling auger 60 faces the front of the main frame 1 and is provided with a sand inlet 601, and the rear end faces the rear end of the main frame 1 and is provided with a sand filling port 602. The sand filling port 602 is located below the sand discharge port 302; it also includes a sand barrier conveying mechanism 70 located on one side of the output direction of the sand filling port 602, and the sand barrier conveying mechanism 70 includes a conveying frame 71 and a driving wheel 73 installed on the conveying frame 71 and driven by a sixth dynamic driver 72. The driving wheels 73 are two groups and are arranged at intervals in the output direction of the sand filling port 602; it also includes a conveyor belt 74 arranged on the two driving wheels 73 and driven by the driving wheel 73. The belt surface of the conveyor belt 74 runs in the same direction as the output direction of the sand filling port 602, and the belt surface of the conveyor belt 74 is located below the cross-section of the sand filling auger 60.

[0113] In the above structure, when the sand filling auger 60 fills the wing bag sand barrier 14 with sand, the wing bag sand barrier 14 that has been filled with sand can first fall on the sand barrier conveying mechanism 70, and then be transported to the ground by the sand barrier conveying mechanism 70, thereby reducing the situation where the wing bag sand barrier 14 falls due to its own weight after being filled with sand and pulls the wing bag sand barrier 14 that has not been filled with sand to slide out, resulting in incomplete sand filling; at the same time, the conveyor belt 74 can control the conveying speed through the sixth dynamic driver 72, thereby providing a certain resistance to the output of the wing bag sand barrier 14, forcing the sand filled into the sand filling port 602 to fill the wing bag sand barrier 14 as much as possible, thereby ensuring the quality of sand filling.

[0114] In this embodiment, a conveying tooth plate 741 is provided on the outer belt wall of the conveyor belt 74, and the conveying tooth plates 741 are arranged at intervals toward the output direction of the sand filling port 602. The conveyor belt 74 is connected by a number of chain plates 742, and each chain plate 742 is provided with one or more conveying tooth plates 741. The middle section of the conveying tooth plate 741 facing away from the chain plate 742 is concave to form a bearing recess 7411.

[0115] In the above structure, the conveying tooth plate 741 can increase the friction between it and the wing bag sand barrier 14, reducing slippage between each other; the chain plate 742 cooperates with the conveying tooth plate 741 to further enhance its own rigidity to carry the wing bag sand barrier 14 that has been filled with sand; the carrying recess 7411 can be more adapted to the bottom of the wing bag sand barrier 14 that has been filled with sand, and reduce the stress concentration at the bottom of the wing bag sand barrier 14 caused by its own weight, thereby causing deformation problems.

[0116] In this embodiment, the conveyor frame 71 is further provided with a support plate 711 located between the two driving wheels 73 for supporting and abutting against the lower surface of the upper belt surface of the conveyor belt 74 .

[0117] In the above structure, the support plate 711 can improve the supporting rigidity of the conveyor belt 74 between the two driving wheels 73 .

[0118] In this embodiment, the outer wall of the sand filling port 602 is provided with a shaping cylinder 603 arranged concentrically therewith.

[0119] In the above structure, the shaping cylinder 603 is used to guide the wing bag sand barrier 14 into a cylinder.

[0120] In this embodiment, the fifth dynamic driver 61 is located at one end of the sand filling auger 60 where the sand inlet 601 is provided.

[0121] In the above structure, the fifth dynamic driver 61 is a hydraulic motor; the sixth dynamic driver 72 is a stepping motor or a servo motor.

[0122] The beneficial effects of the present invention are as follows: the first lifting device 11 is a winch, which controls the swing of the sub-frame 12 through a cable to lift or lower the sand lifting and conveying device 3, the outlet device 4, the binding device 5 and the sand filling device 6; the power source is an internal combustion engine, which cooperates with the hydraulic station to provide power for the entire machine; the walking device 10 is driven by the power source to drive the wing bag sand barrier laying device forward; the sand opening and gathering device 2 can remove obstacles or loosen the sand, and then the loosened sand is lifted to the sand filling device 6 through the sand lifting and conveying device 3 and filled into the wing bag sand barrier 14, and cooperates with the outlet device 4 to export the wing bag sand barrier 14, and the binding device 5 binds the wing bag sand barrier 14, thereby realizing the laying of the wing bag sand barrier 14, which has the advantages of high degree of automation and fast laying efficiency (the guiding mechanism is the same as the existing packaging bag forming principle, which will not be described in detail here).

[0123] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the scope of protection of the present invention.

Claims

1. A feather bag sand barrier laying device, comprising a main frame with running devices provided on both sides of the main frame, characterized in that: A sand opening and gathering device is provided in front of the main frame; the main frame is also provided with a sub-frame located between the walking devices, the front end of which is hinged to the front side of the main frame, and the rear end is controlled to swing up and down by a first lifting device; it also includes a sand lifting and conveying device, a guide device, a binding device and a sand filling device fixed to the sub-frame and located behind the sand opening and gathering device; a holding shaft is provided on the main frame or the sub-frame, and the rolled feather wing bag sand barrier is placed on the holding shaft, and the strip-shaped feather wing bag sand barrier is guided into a tube through a guiding mechanism and then sent to the guide device, the binding device and the sand filling device, and finally output from the rear of the main frame; the main frame is also provided with a power source; the sand opening and gathering device includes a roller frame, the rear end of which is hinged to the main frame, The front end of the drum frame is provided with a sand-opening drum which is driven to rotate by a first driver, and the front end of the drum frame is controlled to swing up and down by a second lifting device; a first sand-collecting blade and a second sand-collecting blade which are spirally arranged along the axial direction of the sand-opening drum are arranged around the outer wall of the sand-opening drum, and the first sand-collecting blade and the second sand-collecting blade are spaced apart from each other in the axial direction of the sand-opening drum so that a sand collecting section is formed at the outer wall of the sand-opening drum between the first sand-collecting blade and the second sand-collecting blade, and the spiral directions of the first sand-collecting blade and the second sand-collecting blade are opposite to each other; the outer edge of the first sand-collecting blade and the second sand-collecting blade on one side away from the central axis of the sand drum is provided with sand-opening teeth spaced apart along the spiral direction; the sand lifting and conveying device includes The lower end of the bracket is toward the rear of the main frame, and the upper end is inclined toward the front of the main frame. The sand-lifting auger is driven by the second drive, and the sand-lifting auger is offset from the dividing line between the main frame or the auxiliary frame; the lower and upper ends of the sand-lifting auger are respectively provided with a sand taking port and a sand discharge port; the lower end of the sand-lifting auger is provided with a sand collecting plate, and the sand collecting plates are two pieces arranged at an angle to each other and projected in a V shape in the axial direction of the sand-lifting auger, and the sand taking port is located at the bottom of the V-shaped notch of the two sand collecting plates, and the V-shaped notches of the sand taking port and the two sand collecting plates face the front of the main frame; the side of the sand collecting plate facing the sand discharge port is provided with a sand pressing plate fixed on the auxiliary frame, and the height of the sand pressing plate near the V-shaped notch of the two sand collecting plates is higher than that of the sand pressing plate The height of the plate near the bottom of the V-shaped groove of the two sand collecting plates; the derivation device includes a derivation fixed frame fixedly connected to the auxiliary frame, and the derivation fixed frame is hinged with a derivation swing frame; it also includes an extrusion roller installed on the adjustment frame and driven to rotate by a third driver; the derivation swing frame, the adjustment frame, the third driver and the extrusion roller are two groups, which are symmetrically arranged with each other, and the two derivation swing frames are connected by a synchronous shaft so that the two can swing synchronously at equal angles relative to the derivation fixed frame when adjusted; the hinge axis of the derivation swing frame and the derivation fixed frame is perpendicular to the axis of the extrusion roller at 90 degrees, and the axes of the two extrusion rollers are parallel to each other; the adjustment frame is slidably arranged relative to the derivation swing frame to control the spacing between the two extrusion rollers;The binding device includes a binding fixing frame fixedly connected to the sub-frame, the binding fixing frame is provided with a binding swing frame, one end of the binding swing frame is hinged to the binding fixing frame, and the other end is drooped and swung, and the swing direction of the drooping end of the binding swing frame is in the same direction as the output direction of the feather bag sand barrier; a swing limit mechanism and a reset device are provided between the binding fixing frame and the binding swing frame; a binding port is provided at the swing end of the binding swing frame, and a binder driven by a fourth driver is provided in the binding port; the sand filling device includes a sand filling auger fixedly connected to the sub-frame and driven by a fifth dynamic driver, and the sand filling auger The front end of the auger faces the front of the main frame and is provided with a sand inlet, while the rear end faces the rear end of the main frame and is provided with a sand filling port, which is located below the sand discharge port. The auger also includes a sand barrier conveying mechanism located on the side of the sand filling port in the direction of output. The sand barrier conveying mechanism includes a conveying frame and drive wheels mounted on the conveying frame and driven by a sixth dynamic driver. The drive wheels are in two sets and are spaced apart in the direction of output from the sand filling port. The auger also includes a conveyor belt mounted on the two drive wheels and driven by the drive wheels. The upper surface of the conveyor belt runs in the same direction as the output direction of the sand filling port, and the upper surface of the conveyor belt is located below the cross-section of the sand filling auger.

2. The feather bag sand barrier laying device according to claim 1, characterized in that: Hard alloy is welded on the tooth walls on both sides of the sand-opening teeth facing toward or / and facing away from the rotation direction of the sand-opening drum.

3. The feather bag sand barrier laying device according to claim 1, characterized in that: The outer wall of the squeezing roller is provided with a rubber layer, and the two squeezing rollers squeeze and roll each other.

4. The feather bag sand barrier laying device according to claim 1, characterized in that: The swing limiting mechanism includes a swing groove arranged along the swing direction, and a swing pin adapted to the swing groove to limit its reciprocating swing limit position, the swing groove is opened on the binding swing frame, and the swing pin is located on the binding fixed frame; the reset device controls the binding swing frame to swing to the side opposite to the output direction of the feather bag sand barrier; the binder is a stapler.

5. The feather bag sand barrier laying device according to claim 1, characterized in that: A conveying tooth plate is provided on the outer belt wall of the conveyor belt, and the conveying tooth plates are arranged at intervals toward the output direction of the sand filling port. The conveyor belt is formed by connecting several chain plates, and each chain plate is provided with one or more conveying tooth plates. The middle section of the conveying tooth plate facing away from the chain plate is concave to form a load-bearing depression.

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