Sand paving device

Abstract

The sand paver comprises a frame, a sand groove assembly is arranged at the lower end of the frame, a sand scraping plate assembly is arranged below the sand groove assembly, the sand scraping plate assembly comprises two sand scraping plates which are oppositely arranged, a gap is formed between the two sand scraping plates, the two sand scraping plates are fixedly connected with the frame, and an air bag assembly is arranged between the two sand scraping plates. The air bag assembly comprises two air bags which are oppositely arranged, the gap is blocked when the two air bags are inflated, and the gap is opened when the two air bags are deflated; the sand groove assembly comprises a sand receiving groove and a vibration groove, the sand receiving groove is located above the vibration groove and connected with the frame, an eccentric vibration assembly is arranged on one side of the vibration groove, a shock absorber assembly is arranged on the other side of the vibration groove, and the vibration groove is connected with the eccentric vibration assembly and the shock absorber assembly at the same time. When the sand paving device is used for sand paving, the sand discharging amount can be stabilized, it is guaranteed that no sand leaks, the sand discharging reliability is improved, the 3D printing quality is guaranteed, and the economic benefits of enterprises are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of 3D printing equipment, and in particular relates to a sand spreading device. Background Art

[0002] Sand mold 3D printing technology is a sand mold additive manufacturing technology that combines inkjet printing with traditional resin sand molding technology. The resin is selectively sprayed onto the surface of the molding sand premixed with a curing agent through a nozzle. The resin and curing agent produce a cross-linking reaction, thereby bonding the molding sand into a specified shape.

[0003] The sand paving device used in the prior art is combined with Figure 20 As shown, the sand spreading device is composed of a sand scraping plate 101 , a rotating shaft cylinder 102 , a vibration motor 103 , a sand trough 104 , a baffle 105 , and a rotating shaft 106 .

[0004] The sand spreading mechanism operates as follows: the sand spreading mechanism moves to the sand receiving position, where the upper sand delivery assembly delivers printing sand to the sand trough 104. After receiving the sand, the module drives the sand spreading mechanism forward. During this forward movement, the rotating shaft cylinder 102 drives the rotating shaft 106 to open the baffle 105. Simultaneously, the vibration motor 103 is activated. Vibration forces the sand out of the sand spreading mechanism. The scraper 101 then scrapes the fallen sand.

[0005] The technical defects of the above-mentioned sand spreader are: first, there is no shielding part on the upper part of the sand trough 104, which poses a risk of polluting the printing environment; second, the baffle 105 is made of bent sheet metal, and there is a gap when closed. Sand with smaller particle size (such as expanded clay sand, etc.) cannot be used for printing, and sand leakage is easy to occur when using materials with smaller particle size; third, the vibration motor 103 is an ordinary speed-regulating motor, and the amount of sand applied cannot be accurately controlled. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a sand spreader. During the 3D printing process, the sand spreader of the present invention is used for sand spreading, which is compatible with small-grained sand, stabilizes the amount of sand placed, ensures that there is no sand leakage, improves the reliability of sand placement, and thus ensures the quality of 3D printed products and further improves the economic benefits of the enterprise.

[0007] In order to solve the above technical problems, the technical solution of the present invention is:

[0008] The sanding machine comprises a frame, a sand groove assembly arranged at the lower end of the frame, a sand scraping plate assembly arranged below the sand groove assembly, the sand scraping plate assembly comprising two oppositely arranged sand scraping plates, a gap arranged between the two sand scraping plates, the two sand scraping plates being fixedly connected with the frame, an air bag assembly arranged between the two sand scraping plates, the air bag assembly comprising two oppositely arranged air bags, the gap being blocked when the two air bags are inflated, and the gap being opened when the two air bags are deflated; the sand groove assembly comprises a sand receiving groove and a vibrating groove, the sand receiving groove being arranged above the vibrating groove, the sand receiving groove being connected with the frame, one side of the vibrating groove being provided with an eccentric vibrating assembly, and the other side of the vibrating groove being provided with a damper assembly, the vibrating groove being connected with the eccentric vibrating assembly and the damper assembly at the same time.

[0009] Further, the two sand scraping plates are defined as a front sand scraping plate and a rear sand scraping plate, the two air bags are defined as a front air bag and a rear air bag, the front sand scraping plate is provided with a front sand scraping plate notch, the rear sand scraping plate is provided with a rear sand scraping plate notch, the front sand scraping plate notch is oppositely arranged with the rear sand scraping plate notch, the front air bag is arranged in the front sand scraping plate notch, and the rear air bag is arranged in the rear sand scraping plate notch.

[0010] Further, the sanding machine further comprises an auger assembly, the auger assembly comprising a speed reducer motor arranged on the frame, a power output end of the speed reducer motor being connected with an auger, the auger being transversely arranged in the sand receiving groove along the length direction of the sand receiving groove.

[0011] Further, the vibrating groove comprises a vibrating groove body, the vibrating groove body comprising an upper part and a lower part connected together, the upper part being a rectangular structure, the lower part being a structure with a wide upper part and a narrow lower part, a filter screen mounting portion being arranged in the vibrating groove body at the connection between the upper part and the lower part, and a lower end of the lower part being contracted into a discharge port.

[0012] Further, the eccentric vibrating assembly comprises an eccentric vibrating power member, the eccentric vibrating power member being mounted on the frame, a power output end of the eccentric vibrating power member being connected with one end of a light shaft, the other end of the light shaft being rotatably mounted on the frame, a plurality of eccentric sleeves being rotatably arranged on the light shaft, the eccentric sleeves being spaced apart, and the eccentric sleeves being fixedly connected with the vibrating groove.

[0013] Further, the eccentric vibrating power member is a servo motor.

[0014] Furthermore, the vibration damper assembly has multiple vibration damper seat structures arranged at intervals, and the vibration damper seat structure includes a vibration damper seat mounting bracket, the vibration damper seat mounting bracket is fixedly connected to the frame, a vibration damper seat is provided on the vibration damper seat mounting bracket, a vibration damper seat connecting block is provided on the vibration damper seat, and the vibration damper seat connecting block is fixedly connected to the vibration groove.

[0015] Furthermore, the sand spreading device also includes a heating component, and the heating component includes a reflector mounting bracket, one end of the reflector mounting bracket is fixedly connected to the frame, and the other end of the reflector mounting bracket is fixedly provided with a reflector, and a quartz heating tube is provided in the reflector; and a temperature sensor is provided on the reflector.

[0016] Furthermore, the sand spreading device also includes a front sand guard plate, a rear sand guard plate, a left sand guard plate, and a right sand guard plate; the front sand guard plate is arranged on the front side of the vibration trough, and a front side gap is provided between the front sand guard plate and the vibration trough; the rear sand guard plate is arranged on the rear side of the vibration trough, and a rear side gap is provided between the rear sand guard plate and the vibration trough; the left sand guard plate is fixedly provided on the front scraping plate, the rear scraping plate, the front sand guard plate, and the left end portion of the rear sand guard plate; the right sand guard plate is fixedly provided on the front scraping plate, the rear scraping plate, the front sand guard plate, and the right end portion of the rear sand guard plate.

[0017] Furthermore, a door assembly is provided at the upper end of the frame.

[0018] Due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0019] The sand paving device of the present invention includes a frame, a sand trough assembly is provided at the lower end of the frame, a sand scraping plate assembly is provided below the sand trough assembly, the sand scraping plate assembly includes two oppositely arranged sand scraping plates, a gap is provided between the two sand scraping plates, the two sand scraping plates are respectively fixedly connected to the frame, an air bag assembly is provided between the two sand scraping plates, the air bag assembly includes two oppositely arranged air bags, the gap is blocked when the two air bags are inflated, and the gap is opened when the two air bags are deflated; the sand trough assembly includes a sand receiving trough and a vibration trough, the sand receiving trough is located above the vibration trough, the sand receiving trough is connected to the frame, an eccentric vibration assembly is provided on one side of the vibration trough, and a shock absorber assembly is provided on the other side of the vibration trough, and the vibration trough is connected to the eccentric vibration assembly and the shock absorber assembly at the same time. In the process of 3D printing, the sand paving device of the present invention is used for sand paving, which can be compatible with small-grained sand, stabilize the amount of sand discharged, and ensure that no sand is leaked, thereby improving the reliability of sand discharge, thereby ensuring the quality of 3D printed products and further improving the economic benefits of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a perspective view of the sand spreading device of the present invention;

[0021] Figure 2 It is a three-dimensional view of the sand spreading device of the present invention from another angle;

[0022] Figure 3 yes Figure 1 A three-dimensional diagram of the middle structure;

[0023] Figure 4 yes Figure 2 A three-dimensional diagram of the middle structure;

[0024] Figure 5 yes Figure 3 Side view of

[0025] Figure 6 yes Figure 5 A partial enlarged view of area A in the middle;

[0026] Figure 7 yes Figure 4 Schematic diagram of the structure without the rear protective cover;

[0027] Figure 8 yes Figure 7 A three-dimensional diagram of the middle vibration damping seat structure;

[0028] Figure 9 yes Figure 7 A three-dimensional view of the middle vibration damping seat structure from another angle;

[0029] Figure 10 yes Figure 8 an enlarged perspective view of the middle vibration tank;

[0030] Figure 11 yes Figure 8 an enlarged perspective view of the middle vibration tank from another angle;

[0031] Figure 12 yes Figure 8 An enlarged perspective view of the middle sand trough;

[0032] Figure 13 yes Figure 1 A three-dimensional diagram of the middle structure;

[0033] Figure 14 yes Figure 13 an enlarged perspective view of the middle auger assembly;

[0034] Figure 15 yes Figure 8 An enlarged perspective view of the center front scraper plate;

[0035] Figure 16 yes Figure 8 An enlarged perspective view of the middle and rear scraper plates;

[0036] Figure 17 yes Figure 1 an enlarged perspective view of the central eccentric vibrating assembly;

[0037] Figure 18 yes Figure 2 an enlarged perspective view of the heating assembly;

[0038] Figure 19 yes Figure 7 An enlarged perspective view of the middle front sand guard plate;

[0039] Figure 20 It is a three-dimensional diagram of a sand spreading device in the prior art;

[0040] In the figure, 1. feed hopper; 2. door; 3. vibration damping seat structure; 31. vibration damping seat mounting bracket; 32. vibration damping seat; 33. vibration damping seat connecting block; 4. auger assembly; 41. reduction motor; 42. auger; 43. auger mounting bracket; 5. vibration trough; 51. vibration trough body; 52. filter screen mounting part; 53. discharge port; 6. eccentric vibration assembly; 61. servo motor; 62. optical axis; 63. optical axis mounting bracket; 64. optical axis bearing; 65. left sealing cover; 66. eccentric sleeve; 67. right sealing cover; 68. servo motor mounting bracket; 7. heating assembly; 71. reflector cover mounting bracket; 72. reflector cover; 73. quartz heating tube; 74. temperature sensor; 8. front scraper; 81. front scraper notch; 9 , rear scraper; 91, rear scraper notch; 10, sand connecting trough; 11, front airbag; 12, rear airbag; 13, front sand baffle; 131, front sand baffle connecting part; 1311, front sand baffle strip hole; 132, front sand baffle sand retaining part; 133, front sand baffle transition part; 14, rear sand baffle; 15, front rib; 16, rear rib; 17, left sand baffle; 171, left sand baffle guide part; 18, right sand baffle; 181, right sand baffle guide part; 19, front protective cover; 20, rear protective cover; 21, filter screen; 22, frame; 23, material shortage sensor; 24, material full sensor; 101, scraper; 102, rotating shaft cylinder; 103, vibration motor; 104, sand trough; 105, baffle; 106, rotating shaft. DETAILED DESCRIPTION

[0041] The present invention will be further described below with reference to the accompanying drawings and examples.

[0042] Combine Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 ,as well as Figure 7As shown together, a sand spreading device includes a frame 22, a sand trough assembly is provided at the lower end of the frame 22, a scraper plate assembly is provided below the sand trough assembly, the scraper plate assembly includes two scrapers arranged opposite to each other, a gap is provided between the two scrapers, the two scrapers are fixedly connected to the frame 22 respectively, an airbag assembly is provided between the two scrapers, the airbag assembly includes two airbags arranged opposite to each other, the gap is blocked when the two airbags are inflated, and the gap is opened when the two airbags are deflated.

[0043] The airbag can be purchased from an external supplier. It is made of flexible rubber and opens and closes with medium-pressure gas. The soft material provides excellent sealing.

[0044] Combine Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 15 ,as well as Figure 16 As shown together, the two scraping plates are defined as the front scraping plate 8 and the rear scraping plate 9, respectively, and the two airbags are defined as the front airbag 11 and the rear airbag 12, respectively. The front scraping plate 8 is provided with a front scraping plate notch 81, and the rear scraping plate 9 is provided with a rear scraping plate notch 91. The front scraping plate notch 81 and the rear scraping plate notch 91 are arranged opposite to each other, the front airbag 11 is arranged in the front scraping plate notch 81, and the rear airbag 12 is arranged in the rear scraping plate notch 91.

[0045] Preferably, the front scraping plate 8 is fixedly connected to the frame 22 via a plurality of spaced front ribs 15 , and the rear scraping plate 9 is fixedly connected to the frame 22 via a plurality of spaced rear ribs 16 .

[0046] Preferably, a front protective cover 19 is provided on the front side of the frame 22 , and a rear protective cover 20 is provided on the rear side of the frame 22 .

[0047] Combine Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 10 、 Figure 11 ,as well as Figure 12 As shown together, the sand trough assembly includes a sand receiving trough 10 and a vibration trough 5. The sand receiving trough 10 is located above the vibration trough 5. The sand receiving trough 10 is fixedly connected to the frame 22. The sand receiving trough 10 is a rectangular structure with open ends at the upper and lower ends.

[0048] Along the length direction of the vibration trough 5, an eccentric vibration component 6 is provided on one side of the vibration trough 5, and a vibration damper component is provided on the other side of the vibration trough. The vibration trough 5 is connected to the eccentric vibration component 6 and the vibration damper component at the same time.

[0049] Preferably, the vibrating trough 5 includes a vibrating trough body 51, which comprises a connected upper portion and a lower portion. The upper portion is a rectangular structure, into which the lower end of the sand receiving trough 10 is inserted. A filter mounting portion 52 is provided within the vibrating trough body 51 at the junction of the upper and lower portions, and the filter 21 is mounted on the filter mounting portion 52. The lower portion is a structure that is wide at the top and narrow at the bottom, with the lower end of the lower portion converging to form a discharge port 53, which is located directly above the gap.

[0050] Combine Figure 1 、 Figure 3 ,as well as Figure 17 As shown in the figure, in this embodiment, the eccentric vibration assembly is located at the rear side of the vibration trough 5. The eccentric vibration assembly 6 includes an eccentric vibration power member, preferably, the eccentric vibration power member is a servo motor 61, and the servo motor 61 can be used to accurately control the amount of sand discharged.

[0051] The servo motor 61 is fixedly mounted on the lower surface of the frame 22 via a servo motor mounting bracket 68. The power output end of the servo motor 61 is connected to one end of the optical axis 62, and the other end of the optical axis 62 is rotatably mounted on the frame 22. A plurality of optical axis mounting brackets 63 are fixedly mounted on the lower surface of the frame 22, and the plurality of optical axis mounting brackets 63 are spaced apart. Optical axis bearings 64 are also disposed on the sides of the optical axis mounting brackets 63, and the optical axis 62 is rotatably mounted on the optical axis bearings 64. A plurality of eccentric sleeves 66 are rotatably mounted on the optical axis 62, and the eccentric sleeves 66 are mounted on the optical axis 62 via eccentric sleeve bearings. A left sealing cap 65 is disposed on the left side of each eccentric sleeve bearing, and a right sealing cap 67 is disposed on the right side of each eccentric sleeve bearing. The plurality of eccentric sleeves 66 are spaced apart, and the eccentric sleeves 66 are fixedly connected to the vibration trough 5. Preferably, the portion where the eccentric sleeves 66 are connected to the vibration trough 5 is compatible with the structure of the vibration trough 5.

[0052] Combine Figure 1 、 Figure 7 、 Figure 8 ,as well as Figure 9 As shown, the vibration damper assembly includes multiple vibration damper seat structures 3 spaced apart. The vibration damper seat structures 3 include vibration damper seat mounting brackets 31 fixedly connected to the lower surface of the frame 22. A vibration damper seat 32 is provided on the vibration damper seat mounting brackets 31. A vibration damper seat connecting block 33 is provided on the vibration damper seat 32. The vibration damper seat connecting block 33 is fixedly connected to the vibration trough 5. The portion where the vibration damper seat connecting block 33 is connected to the vibration trough 5 serves as a shape-defending structure for the vibration trough 5.

[0053] Combine Figure 1 、 Figure 13 ,as well as Figure 14As shown together, preferably, the sand spreading device further includes an auger assembly 4, which includes a reduction motor 41 provided on the upper surface of the frame 22. The power output end of the reduction motor 41 is connected to an auger 42. The auger 42 is arranged transversely in the sand receiving trough 10 along the length direction of the sand receiving trough 10. An auger mounting bracket 43 is fixedly provided on the frame 22 at the other end opposite to the reduction motor 41. One end of the auger 42 is connected to the output end of the reduction motor 41, and the other end of the auger 42 is rotatably mounted on the auger mounting bracket 43.

[0054] Combine Figure 1 as well as Figure 18 As shown, the sanding machine preferably further includes a heating assembly 7, which comprises a plurality of spaced reflector mounting brackets 71. One end of the reflector mounting bracket 71 is fixedly connected to the frame 22, and a reflector 72 is fixedly mounted on the other end of the reflector mounting bracket 71. A quartz heating tube 73 is disposed within the reflector 72 along its length. Furthermore, a temperature sensor 74 is preferably provided on the reflector 72. The heating assembly 7 can increase the temperature of the sand surface, thereby improving the curing speed and molding accuracy. The heating time and temperature are adjustable.

[0055] Combine Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 ,as well as Figure 7 As shown together, preferably, the sand spreading device further includes a front sand guard plate 13 , a rear sand guard plate 14 , a left sand guard plate 17 , and a right sand guard plate 18 .

[0056] Combine Figure 7 as well as Figure 19 As shown, the front sand shield 13 is disposed at the front side of the vibration trough 5, with a front gap defined between the front sand shield 13 and the vibration trough 5. Preferably, the front sand shield 13 includes a transversely disposed front sand shield connecting portion 131, which is fixedly connected to the front scraping plate 8 and is provided with a front sand shield strip hole 1311. The front sand shield 13 also includes a front sand shield sand retaining portion 132 and a front sand shield transition portion 133. The front sand shield sand retaining portion 132 is connected to the front sand shield connecting portion 131 via the front sand shield transition portion 133. Preferably, the front sand shield connecting portion 131, the front sand shield transition portion 133, and the front sand shield sand retaining portion 132 are integrally formed. The front side gap is set between the front sand guard plate sand retaining part 132 and the vibration groove 5. The size of the front side gap between the front sand guard plate sand retaining part 132 and the vibration groove 5 can be adjusted through the front sand guard plate strip hole 1311.

[0057] Combine Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 ,as well as Figure 7 As shown, the rear sand guard 14 is disposed at the rear side of the vibration trough 5, with a rear gap defined between the rear sand guard 14 and the vibration trough 5. Preferably, the rear sand guard 14 includes a transversely disposed rear sand guard connecting portion, which is fixedly connected to the rear scraping plate 9 and provided with a rear sand guard strip hole. The rear sand guard 14 also includes a rear sand guard sand retaining portion and a rear sand guard transition portion, with the rear sand guard sand retaining portion and the rear sand guard connecting portion connected via the rear sand guard transition portion. Preferably, the rear sand guard connecting portion, the rear sand guard transition portion, and the rear sand guard sand retaining portion are integrally formed. The rear gap is defined between the rear sand guard sand retaining portion and the vibration trough 5, and the size of the front gap between the rear sand guard sand retaining portion and the vibration trough 5 can be adjusted using the rear sand guard strip hole.

[0058] The left sand guard plate 17 is fixedly arranged on the left end portion of the front sand scraping plate 8, the rear sand scraping plate 9, the front sand guard plate 13, and the rear sand guard plate 14. The left sand guard plate 17 also includes a left sand guard plate guide portion 171, which guides the overflowing sand.

[0059] The right sand guard plate 18 is fixedly arranged at the right end of the front sand scraping plate 8, the rear sand scraping plate 9, the front sand guard plate 13, and the rear sand guard plate 14. The right sand guard plate 18 also includes a right sand guard plate guide portion 181, which guides the overflowing sand.

[0060] Combine Figure 1 、 Figure 2 、 Figure 3 ,as well as Figure 4 As shown, a door assembly is also provided at the upper end of the frame 22. The door assembly includes a door 2 that opens and closes on the upper surface of the frame 22, with a sealing gasket interposed between the door 2 and the frame 22. The door 2 is pivotally connected to the frame 22 via hinges. The arrangement of the door 2 and the sealing gasket minimizes the emission of sand and dust, creating a relatively friendly environment around the sanding machine and providing a comfortable working environment for workers. Furthermore, the door's convenient opening facilitates subsequent maintenance and cleaning.

[0061] A material shortage sensor 23 is provided on the left side of the frame 22 , and a material full sensor 24 is provided on the right side of the frame 22 . The material shortage sensor 23 and the material full sensor 24 are used together to detect whether the sand tank assembly is full of sand.

[0062] A feed hopper 1 is also provided on the frame 22 , and the feed hopper 1 is communicated with the sand receiving trough 10 .

[0063] The process of paving with the paving machine of the present application is described in detail as follows:

[0064] The lack of material sensor 23 and the full material sensor 24 detect no signal in the sand tank assembly. At this time, the program defaults that there is no sand or the amount of sand does not meet the requirement of the next process in the sand tank assembly, and the PLC sends a signal to control the paving machine to move to the material receiving position. After the paving machine moves to the material receiving position, the sand falls and enters the sand receiving tank 10 of the sand tank assembly through the feeding hopper 1. This process is a prior art and will not be described in detail here. At this time, the reduction motor drives the auger to rotate to convey the sand from the left side to the right side. When the lack of material sensor 23 and the full material sensor 24 detect a signal, the PLC defaults that the sand tank assembly is full of sand. The reduction motor 41 stops rotating and the feeding process is completed. The feeding process is known to those skilled in the art and will not be described here.

[0065] After the sand adding process is completed, the paving machine will perform the sand paving process. The PLC control module controls the paving machine to move to the initial paving position. At this time, the front air bag 11 and the rear air bag 12 are deflated to open the gap between the front sand scraping plate 8 and the rear sand scraping plate 9. The servo motor 61 drives the eccentric vibration assembly to rotate to form a vibration force acting on the vibration tank 5. The function of the damping seat 32 is to support the vibration tank 5 to prevent vibration from being transmitted to the frame 22. The sand falls from the discharge port 53 of the vibration tank 5 and finally falls from the gap between the front sand scraping plate 8 and the rear sand scraping plate 9. When this action is completed, the paving machine moves as a whole to pave the sand on the entire plane. During the movement, the front sand scraping plate 8 cooperates with the rear sand scraping plate 9 to scrape the sand surface flat. The left sand blocking plate 17 and the right sand blocking plate 18 are used to trim the sand surface on the left and right sides to prevent the sand surface from expanding. When the paving machine moves to the end position, the front air bag 11 and the rear air bag 12 are inflated to block the gap between the front sand scraping plate 8 and the rear sand scraping plate 9. Moreover, the servo motor 61 stops working. When paving sand again, the above process is repeated.

[0066] During the sand paving process, if the sand surface needs to be heated, the quartz heating tube 73 of the heating assembly 7 can be started to work to heat the sand surface.

[0067] After printing is completed, the door 2 is opened, the inside of the paving machine is cleaned with a brush, and the impurities on the filter screen 21 are removed to prevent the gap between the front sand scraping plate 8 and the rear sand scraping plate 9 from being blocked. After cleaning is completed, the door 2 is closed.

[0068] After the equipment operates for a certain period of time, lubricating oil needs to be added to the eccentric vibration assembly 6 to ensure smooth operation.

[0069] In the description of the present application, it should be understood that the "front wiper blade", "front wiper blade notch", "rear wiper blade", "rear wiper blade notch", "front air bag", "rear air bag", "front sand barrier", "front sand barrier connecting part", "front sand barrier strip hole", "front sand barrier sand blocking part", "front sand barrier transition part", "rear sand barrier", "rear sand barrier connecting part", "rear sand barrier strip hole", "rear sand barrier sand blocking part", "rear sand barrier transition part", "front rib plate", "rear rib plate", "left sand barrier", "left sand barrier guide part", "right sand barrier", "right sand barrier guide part", "front protective cover", "rear protective cover", "left side", "right side", "one end", "the other end", "one side", "the other side" and the like described orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of the description of the application and simplify the description, and not to indicate or imply that the device or element must have a particular orientation, with a particular orientation and operation, therefore can not be understood as a limitation on the application.

[0070] Although the above describes the specific embodiments of the present application, those skilled in the art should understand that the described embodiments are only a part of the embodiments of the present application, not all the embodiments, these are only examples, the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, without any creative labor, but these changes and modifications all fall within the protection scope of the present application.

Claims

1. A sand spreading device, characterized in that: The invention comprises a frame, a sand trough assembly is provided at the lower end of the frame, a scraping plate assembly is provided below the sand trough assembly, the scraping plate assembly comprises two scraping plates arranged opposite to each other, a gap is provided between the two scraping plates, the two scraping plates are respectively fixedly connected to the frame, an airbag assembly is provided between the two scraping plates, the airbag assembly comprises two airbags arranged opposite to each other, the gap is blocked when the two airbags are inflated, and the gap is opened when the two airbags are deflated; The sand trough assembly includes a sand receiving trough and a vibration trough, the sand receiving trough is located above the vibration trough, the sand receiving trough is connected to the frame, an eccentric vibration assembly is provided on one side of the vibration trough, and a shock absorber assembly is provided on the other side of the vibration trough, and the vibration trough is connected to the eccentric vibration assembly and the shock absorber assembly at the same time.

2. The sand spreading device according to claim 1, wherein: The two scraping plates are defined as a front scraping plate and a rear scraping plate respectively, and the two airbags are defined as a front airbag and a rear airbag respectively. The front scraping plate is provided with a front scraping plate notch, and the rear scraping plate is provided with a rear scraping plate notch. The front scraping plate notch is arranged opposite to the rear scraping plate notch. The front airbag is arranged in the front scraping plate notch, and the rear airbag is arranged in the rear scraping plate notch.

3. The sand spreading device according to claim 2, wherein: The sand spreading device also includes an auger assembly, which includes a reduction motor arranged on the frame. The power output end of the reduction motor is connected to the auger, and the auger is horizontally arranged in the sand receiving trough along the length direction of the sand receiving trough.

4. The sand spreading device according to claim 1, wherein: The vibration trough includes a vibration trough body, which includes an upper part and a lower part connected together. The upper part is a rectangular structure, and the lower part is a structure that is wide at the top and narrow at the bottom. A filter screen installation part is provided in the vibration trough body, and the lower end of the lower part is contracted to form a discharge port.

5. The sand spreading device according to claim 1, wherein: The eccentric vibration assembly includes an eccentric vibration power part, which is installed on the frame. The power output end of the eccentric vibration power part is connected to one end of the optical axis, and the other end of the optical axis is rotatably installed on the frame; a plurality of eccentric sleeves are rotatably arranged on the optical axis, and the plurality of eccentric sleeves are arranged at intervals, and the eccentric sleeves are fixedly connected to the vibration groove.

6. The sand spreading device according to claim 5, characterized in that: The eccentric vibration power part is a servo motor.

7. The sand spreading device according to claim 1, wherein: The vibration damper assembly comprises a plurality of vibration damper seat structures arranged at intervals, wherein the vibration damper seat structure comprises a vibration damper seat mounting bracket, the vibration damper seat mounting bracket is fixedly connected to the frame, a vibration damper seat is provided on the vibration damper seat mounting bracket, a vibration damper seat connecting block is provided on the vibration damper seat, and the vibration damper seat connecting block is fixedly connected to the vibration groove.

8. The sand spreading device according to claim 7, characterized in that: The sand spreading device also includes a heating component, which includes a reflector mounting bracket, one end of which is fixedly connected to the frame, and the other end of which is fixedly provided with a reflector, wherein a quartz heating tube is provided in the reflector; and a temperature sensor is provided on the reflector.

9. The sand spreading device according to claim 2, wherein: The sand spreading device also includes a front sand guard plate, a rear sand guard plate, a left sand guard plate, and a right sand guard plate; the front sand guard plate is arranged on the front side of the vibration trough, and a front side gap is provided between the front sand guard plate and the vibration trough; the rear sand guard plate is arranged on the rear side of the vibration trough, and a rear side gap is provided between the rear sand guard plate and the vibration trough; the left sand guard plate is fixedly provided on the front scraping plate, the rear scraping plate, the front sand guard plate, and the left end portion of the rear sand guard plate; the right sand guard plate is fixedly provided on the front scraping plate, the rear scraping plate, the front sand guard plate, and the right end portion of the rear sand guard plate.

10. The sand spreading device according to claim 1, wherein: A door assembly is also provided at the upper end portion of the frame.

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