Electric gate for grain scraper

Abstract

The utility model relates to conveying equipment, in particular to an electric gate for a grain scraper. Comprising a shell, a lead screw, a lead screw nut and an inserting plate, a partition plate is arranged in the shell and divides the shell into a front shell body and a rear shell body, the lead screw is rotationally installed in the rear shell body, the lead screw nut is matched with the lead screw, the inserting plate is horizontally installed on the lead screw nut and penetrates through the upper end of the partition plate, a grain flowing bottom plate is arranged at the top end of the front shell body, and a grain flowing hole set is formed in the grain flowing bottom plate. The inserting plate is matched with the bottom surface of the grain flowing bottom plate; the lead screw is provided with a compression spring assembly for preventing the lead screw nut from slipping, and the compression spring assembly comprises a fixing ring, a compression spring and a sliding ring which are arranged on the lead screw in a sleeving mode. According to the utility model, the problem of grain mixed storage caused by gate material storage is solved; a traditional connecting reducing part is removed, the grain flowing bottom plate and the electric gate are of an integrated structure, and the problems that field installation is long in time efficiency, difficult to operate and inconvenient to disassemble are solved. The grain flowing hole group of the grain flowing bottom plate solves the problem of batten deformation caused by traditional splayed holes.

Description

Technical Field

[0001] The utility model relates to a conveying device, in particular to an electric gate for a grain scraper conveyor. Background Art

[0002] When conveying grain to a silo, a scraper conveyor and an electric gate are usually adopted. For a traditional electric gate, a connecting flange is arranged at the connection between the plug plate and the bottom plate of the scraper conveyor. In this structure, when the silo stops feeding grain, the gate plug plate is in a closed state. Therefore, when the grain flows through the gate, it will accumulate in the flange cylinder at the connection between the gate plug plate and the bottom plate and fill it up. Since a silo does not store a single kind of material alone, adjacent silos will share a scraper conveyor. Therefore, when bin A on the same path stops feeding grain and bin B is feeding grain, the grain is conveyed by the scraper conveyor and first passes through bin A, filling up the gate flange cylinder on bin A. When bin A feeds grain again, these accumulated grains will enter the silo first, resulting in the phenomenon of mixed storage of grains.

[0003] For a traditional electric gate, since a connecting flange needs to be made for connection with the scraper conveyor, it is generally bent from a section steel or a steel plate, increasing a certain height on the original height of the scraper conveyor, which is labor-consuming, material-consuming and inconvenient for installation. The traditional scraper conveyor and the electric gate are assembled by on-site hole opening. The on-site workers use an angle grinder or plasma cutting, which is inconvenient for operation, and the cut surface is not smooth and neat. For the transmission mechanism of the screw nut and the screw of the traditional electric gate cooperating with the limit switch, the limit switch will malfunction occasionally. In the case where the limit switch fails, the plug plate will keep moving forward until it abuts against the side plate of the housing. Due to the influence of the reaction force, it will cause varying degrees of damage to the screw, the bearing seat and the reduction motor.

[0004] When opening holes in the grain flow bottom plate, while ensuring the flow of grain, it is also necessary to support the scraper of the scraper conveyor. The traditional hole opening methods include parallel straight rows and octagonal hole openings. However, for the parallel ones, grain will be stored in the path, and when the size of the machine type is large, the support bars will deform and collapse, interfering with the advancing plug plate. Summary of the Utility Model

[0005] The utility model aims to solve the above technical problems, and thus provides an electric gate for a grain scraper conveyor, which solves the problem of mixed storage of grains, improves the service life of the electric gate and reduces the maintenance cost.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0007] An electric gate for a grain scraper, comprising a housing, a lead screw, a lead screw nut and a plug plate. A partition is provided inside the housing, which divides the housing into a front housing and a rear housing. The lead screw is rotatably installed in the rear housing, the lead screw nut is matched with the lead screw, and the plug plate is horizontally installed on the lead screw nut and penetrates through the upper end of the partition. A grain flowing bottom plate is provided at the top of the front housing, and a set of grain flowing holes is provided on the grain flowing bottom plate. The plug plate is matched with the bottom surface of the grain flowing bottom plate;

[0008] The lead screw is provided with a compression spring assembly for preventing the lead screw nut from slipping off. The compression spring assembly includes a fixed ring sleeved on the lead screw, a compression spring and a sliding ring.

[0009] Compared with the prior art, the beneficial effects of the present utility model adopting the above technical solution are as follows:

[0010] 1) It solves the problem of grain mixing caused by material storage in the electric gate;

[0011] 2) Removing the traditional connecting reducer, the grain flowing bottom plate and the electric gate are of an integral structure, solving the problems of long on-site installation time, difficult operation and inconvenient disassembly;

[0012] 3) The set of grain flowing holes on the grain flowing bottom plate solves the problem of slat deformation caused by the traditional eight-shaped opening.

[0013] Furthermore, the optimized solution of the present utility model is:

[0014] Plug welding holes are provided at the outer end of the grain flowing bottom plate, and the plug welding holes are welded to the front housing.

[0015] The set of grain flowing holes includes a middle hole group and side hole groups on both sides of the middle hole group. The grain flowing holes in the middle hole group are isosceles trapezoid-shaped and the area of the hole opening decreases along the conveying direction of the scraper. The grain flowing holes in the side hole groups are right trapezoid-shaped and the area of the hole opening increases along the conveying direction of the scraper.

[0016] The front and rear ends of the lead screw are respectively rotatably connected to the rear housing through a front bearing seat and a rear bearing seat. The compression spring assembly is respectively placed inside the front bearing seat and the rear bearing seat, and the fixed ring is respectively in close contact with the front bearing seat and the rear bearing seat.

[0017] Rollers for supporting the plug plate are respectively provided on the side plates of the front housing.

[0018] Rollers for supporting the plug plate are provided on the side plates of the rear housing.

[0019] Supporting plate strips for supporting the plug plate are provided on the side plates of the rear housing.

[0020] The outer end of the lead screw is connected to a driving mechanism through a star-shaped coupling, and the driving mechanism is installed on the rear housing.

[0021] A lower flange is installed at the bottom of the front housing.

[0022] The front housing and the rear housing are stepped. Description of the Drawings

[0023] Figure 1 Isometric view of the electric gate of the embodiment of the present utility model;

[0024] Figure 2 Isometric view of the electric gate and the scraper conveyor of the embodiment of the present utility model;

[0025] Figure 3 Front view of the electric gate of the embodiment of the present utility model;

[0026] Figure 4 Is Figure 3 Top view of;

[0027] Figure 5 Is Figure 3 Left view of;

[0028] Figure 6 Is Figure 4 A-A sectional view of;

[0029] Figure 7 Is Figure 4 B-B sectional view of;

[0030] Figure 8 View of the fully opened state of the plug plate of the electric gate of the embodiment of the present utility model;

[0031] Figure 9 Isometric view of the housing of the embodiment of the present utility model;

[0032] Figure 10 Front view of the grain flow bottom plate of the embodiment of the present utility model;

[0033] Figure 11 Is Figure 10 Left view of.

[0034] In the figure: housing 1; side plate 101; front end plate 102; rear end plate 103; partition 104; front housing 105; rear housing 106; support plate 107; cover plate 108; lower flange 109; lead screw 2; front bearing 3; rear bearing 4; front bottom plate 5; rear bottom plate 6; star coupling 7; reduction motor 8; junction box 801; lead screw nut 9; plug plate 10; felt 11; roller 12; support strip 13; limit switch 14; fixing ring 15; compression spring 16; sliding ring 17; grain flow bottom plate 18; middle hole group 1801; side hole group 1802; grain flow hole 1803; plug weld hole 1804; ear plate 19; scraper conveyor 20. Detailed Description of the Embodiment

[0035] The present utility model will be further described in detail below with reference to the drawings and embodiments.

[0036] See Figures 1-9 Figures 1-9 , this embodiment provides an electric gate for a grain scraper, which is mainly composed of a housing 1, a lead screw 2, a lead screw nut 9, a plug plate 10, and a grain flow bottom plate 18. The housing 1 is a rectangular frame structure, which is mainly composed of two side plates 101, a front end plate 102, a rear end plate 103, and a partition plate 104. The side plates 101, the front end plate 102, and the rear end plate 103 are all grooved and the grooves face outward. The upper end surfaces of the two side plates 101 are step structures. The partition plate 104 is horizontally installed in the housing 1. The partition plate 104 is located at the step structure of the side plates 101. The partition plate 104 divides the housing 1 into a front housing 105 and a rear housing 106, and the front housing 105 and the rear housing 106 are in a step structure. An angular support plate 107 is installed at the step structure of the rear housing 106, and the vertical part of the support plate 107 is located behind and above the partition plate 104. A cover plate 108 is installed on the upper part of the rear housing 106, and the cover plate 108 is in an inverted U shape. A lower flange 109 is installed at the bottom of the front housing 105.

[0037] The lead screw 2 is installed in the rear housing 106. The front and rear ends of the lead screw 2 are respectively rotatably connected to a front bearing 3 and a rear bearing 4. The front bearing 3 and the rear bearing 4 are respectively connected to a front bottom plate 5 and a rear bottom plate 6 by bolts. The front bottom plate 5 and the rear bottom plate 6 are respectively welded to the two side plates 101. The rear end of the lead screw 2 penetrates through the rear end plate 103 and is installed with a star coupling 7. The star coupling 7 is connected to a driving mechanism. The driving mechanism uses a reduction motor 8. The reduction motor 8 is connected to the rear end plate 103 through a base. A junction box 801 is installed on the outside of the front end plate 102 to improve safety. The star coupling 7 can bring better transmission effect and prevent the influence of excessive coaxiality of the two shafts caused by production and assembly errors. The star coupling 7 can withstand greater torque, has better elastic pad performance, and is small in size, meeting the space requirements.

[0038] A lead screw nut 9 is screwed on the lead screw 2. The lead screw nut 9 cooperates with the lead screw 2. The rear end of the horizontal plug plate 10 is connected to the lead screw nut 9 by bolts. The plug plate 10 penetrates through the upper end of the partition plate 104 and is located below the support plate 107. The reduction motor 8 is linked with one end of the lead screw 2 through the star coupling 7, driving the lead screw 2 to make a rotary motion. The lead screw nut 9 cooperates with the lead screw 2 to achieve the effect of advancing and retreating. The lead screw nut 9 drives the plug plate 10 to open and close the front housing 105.

[0039] On the rear side of the upper part of the partition plate 104 and the rear side of the vertical part of the support plate 107, felts 11 are respectively installed. The upper and lower two felts 11 are arranged in a staggered manner. The felt 11 is used to seal the plug board 10 to prevent materials from entering the rear housing 106 from the front housing 105. Rollers 12 are respectively installed on the side plates 101 in the front housing 106 and the rear housing 105. The roller 12 is used to support the plug board 10 to make the telescopic movement of the plug board 10 smooth and prevent jamming. A horizontal support bar 13 is installed on the inner plate surface of the side plate 101 of the front housing 105. The support bar 13 supports both sides of the plug board 10 to prevent the plug board 10 from deforming and keep it in a horizontal state. The support bar 13 can also prevent material leakage. Since there needs to be a gap between the plug board 10 and the side plate 101, the design of the support bar 13 just blocks the gap. Two limit switches 14 are installed on the inner plate surface of a side plate 101 of the rear housing 106. The limit switch 14 is used to limit the lead screw nut 9 and the plug board 10. The installation holes of the limit switch 14 are long holes, which improves the efficiency of assembly and debugging.

[0040] Two sets of compression spring assemblies are arranged on the lead screw 2. The two sets of compression spring assemblies are respectively placed inside the front bearing 3 and the rear bearing 4. The compression spring assembly is mainly composed of a fixed ring 15, a compression spring 16 and a sliding ring 17. The fixed ring 15, the compression spring 16 and the sliding ring 17 are respectively sleeved on the lead screw 2, and the fixed ring 15 is closely attached to the front bearing 3 or the rear bearing 4. During operation, the limit switch 14 may have occasional failures. When the limit switch 14 fails, even if the lead screw 2 always drives the lead screw nut 9 to move forward, the lead screw nut 9 will be pushed against the shaft head position of the lead screw 2 due to the reaction force of the compression spring 16, and no damage will be caused to the equipment. Moreover, when the lead screw 2 rotates reversely, the lead screw nut 9 will also be affected by the reaction force of the compression spring 16 and return to the lead screw 2 again, causing the plug board 10 to move.

[0041] A grain flow bottom plate 18 is installed on the top of the front housing 105. The grain flow bottom plate 18 is in a Z shape and is horizontally arranged. The inner vertical part of the grain flow bottom plate 18 is located inside the vertical part of the cover plate 108, and the outer vertical part of the grain flow bottom plate 18 is located outside the front end plate 102. The bottom surface of the grain flow bottom plate 18 cooperates with the plug board 10. Ear plates 19 are respectively installed at both ends of the grain flow bottom plate 18 in the conveying direction of the scraper conveyor. The ear plates 19 are connected to the side plate 101 through bolts. A plurality of plug weld holes 1804 are opened at the outer end of the horizontal part of the grain flow bottom plate 18. During on-site installation, the plug weld holes 1804 are welded to the wing plate of the front end plate 102.

[0042] The grain flow bottom plate 18 is provided with multiple groups of grain flow hole groups. Each group of grain flow hole groups is composed of a middle hole group 1801 and side hole groups 1802 on both sides. The side hole groups 1802 are arranged on both sides of the middle hole group 1801 and symmetrically. The middle hole group 1801 and the side hole groups 1802 are provided with three grain flow holes 1803 along the conveying direction of the scraper conveyor. The grain flow holes 1803 of the middle hole group 1801 are isosceles trapezoid-shaped and the area of the hole openings decreases along the conveying direction of the scraper conveyor. The grain flow holes 1803 of the side hole groups 1802 are right trapezoid-shaped and the area of the hole openings increases along the conveying direction of the scraper conveyor. The grain flow bottom plate 18 of this embodiment adopts a design of laser cutting and sheet metal bending formed integrally. The grain flow bottom plate 18 is connected to the housing through ear plates 19 and bolt groups. On-site, only the installation holes need to be opened according to the outer dimension of the bottom plate. After the holes are opened, welding is carried out, which reduces the time cost caused by on-site construction and brings greater convenience to future replacement and maintenance. The structure and shape of the grain flow holes 1803 prevent the slats from deforming due to over-large cutting dimensions, which hinders the advancement of the plug board 10, and prevent the storage of grain in the path due to different cutting shapes.

[0043] The scraper conveyor 20 is installed on the upper part of the grain flow bottom plate 18. The scraper conveyor 20 is directly installed on the grain flow bottom plate 18, removing the connecting flange and flange cylinder between the electric gate and the scraper conveyor 20. While solving the problem of space utilization, it saves materials and improves the service performance. The structural design in which the plug board 10, the scraper conveyor 20 and the grain flow bottom plate 18 are in contact realizes the self-cleaning function of the scraper conveyor 20 and the electric gate, and solves the problem of material mixing caused by the storage of materials in the traditional electric gate. The assembly and installation form of the electric gate, the scraper conveyor 20 and the flow bottom plate 18 solves the problems of difficult on-site hole opening operation, unsightliness and long working hours.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An electric gate for a grain scraper, comprising a housing, a lead screw, a lead screw nut and a plug plate. A partition is provided inside the housing, which divides the housing into a front housing and a rear housing. The lead screw is rotatably installed in the rear housing, the lead screw nut is engaged with the lead screw, and the plug plate is horizontally installed on the lead screw nut and penetrates through the upper end of the partition. It is characterized in that: A grain flow bottom plate is provided at the top of the front housing. The grain flow bottom plate is provided with a set of grain flow holes, and the plug plate cooperates with the bottom surface of the grain flow bottom plate; The lead screw is provided with a compression spring assembly for preventing the lead screw nut from slipping off. The compression spring assembly includes a fixed ring sleeved on the lead screw, a compression spring and a sliding ring.

2. The electric gate for a grain scraper according to claim 1, wherein: Plug welding holes are provided at the outer end of the grain flow bottom plate, and the plug welding holes are welded to the front housing.

3. The electric gate for the grain scraper according to claim 1, characterized in that: The set of grain flow holes includes a middle hole set and side hole sets on both sides of the middle hole set. The grain flow holes in the middle hole set are isosceles trapezoid in shape and the area of the hole opening decreases along the conveying direction of the scraper. The grain flow holes in the side hole sets are right trapezoid in shape and the area of the hole opening increases along the conveying direction of the scraper.

4. The electric gate for a grain scraper according to claim 1, wherein: The front and rear ends of the lead screw are respectively rotatably connected to the rear housing through a front bearing seat and a rear bearing seat. The compression spring assembly is respectively placed inside the front bearing seat and the rear bearing seat, and the fixed ring is respectively in close contact with the front bearing seat and the rear bearing seat.

5. The electric gate for a grain scraper according to claim 1, characterized in that: Rollers for supporting the plug plate are respectively provided on the side plates of the front housing.

6. The electric gate for a grain scraper according to claim 1, characterized in that: Rollers for supporting the plug plate are provided on the side plates of the rear housing.

7. The electric gate for a grain scraper according to claim 1, characterized in that: A support strip for supporting the plug plate is provided on the side plate of the rear housing.

8. The electric gate for a grain scraper according to claim 1, characterized in that: The outer end of the lead screw is connected to a driving mechanism through a star coupling, and the driving mechanism is installed on the rear housing.

9. The electric gate for a grain scraper according to claim 1, characterized in that: A lower flange is installed at the bottom of the front housing.

10. The electric gate for a grain scraper according to claim 1, characterized in that: The front housing and the rear housing are in a stepped shape.

Images