Lifting grain distributor

Abstract

The utility model discloses a lifting grain distributor in the technical field of grain storage equipment, which comprises a central material guide column and a material distribution device sleeved on the central material guide column, and the material distribution device comprises a sleeve and a chute distributed on the sleeve; the sleeve sleeves the central material guide column in a sliding manner, and the sleeve ascends and descends to drive the chute to realize material distribution at different heights; a plurality of contact units are distributed on the inner wall face of the sleeve and used for making contact with the outer wall face of the center material guiding column so as to prevent the sleeve from colliding with the center material guiding column. The contact unit comprises a contact wheel used for making contact with the center guide column and a tensioning assembly used for installing the contact wheel on the inner wall face of the sleeve, and the tensioning assembly enables the contact wheel to be kept at the initial position under the condition that the contact wheel is not subjected to external force and enables the contact wheel to move within the set stroke when the contact wheel is subjected to the external force. Therefore, the contact wheel can avoid the convex or deformed part on the surface of the central material guide column.

Description

Technical Field

[0001] The utility model relates to the technical field of grain storage equipment, in particular to a lifting grain distributor. Background Art

[0002] In the existing grain storage field (rice, millet, corn, highland barley, oats, buckwheat, quinoa, barley, etc.), most of them are grain silos. The grain is fed directly into the silo from the top or enters the silo through a fixed material distribution device. There is a relatively high drop in the silo process, which can easily cause the grain to break and aggravate the grading of the grain.

[0003] In order to solve the above problems, most of the current lifting type material distribution devices are used when entering the warehouse. The lifting type material distribution device has a variety of installation methods, including the inclusion of the distribution device on a central material guide column, the distribution device can be raised and lowered on the central material guide column, so that different heights of distribution can be achieved, reducing the drop when the grain enters the warehouse, achieving the effect of reducing the grain breakage rate and grain grading.

[0004] However, due to the long length of the central material guide column, it is manufactured in sections during production and then assembled on-site in the silo. Quality defects generated during the production process, assembly defects generated during the assembly process, and lateral pressure of grain during loading and use may cause deformation and bulges on the surface of the central material guide column. In order to prevent friction with the central material guide column, a contact wheel is installed in the inner cavity of the feeding device. However, traditional contact wheels are fixed to the inner cavity of the feeding device. As a result, when an external defect appears on the central material guide column, it may affect the normal lifting and lowering of the feeding device and the normal operation of the equipment. The feeding device has low tolerance.

[0005] Based on this, the utility model designs a lifting grain distributor to solve the above problems. Utility Model Content

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lifting grain distributor, comprising a central material guide column and a material distribution device sleeved on the central material guide column, characterized in that the material distribution device comprises a sleeve and a chute arranged on the sleeve; the sleeve is slidably sleeved on the central material guide column, and the sleeve is lifted and lowered to drive the chute to achieve material distribution at different heights; the chute is tilted downward at one end away from the sleeve; a plurality of contact units are arranged on the inner wall of the sleeve for contacting with the outer wall of the central material guide column to prevent the sleeve from rubbing against the central material guide column; the contact unit comprises a contact wheel and a tensioning assembly installed in the sleeve, and the tensioning assembly provides elastic support for the contact wheel so that the contact wheel contacts the central material guide column.

[0007] As a further solution of the utility model, the tensioning assembly includes a movable part and an elastic part; one end of the movable part is connected to the contact wheel, and the other end is hinged to the inner wall of the sleeve to limit the freedom of the contact wheel; the elastic part is arranged between the movable part and the sleeve to support the movable part so that the movable part can be reset after moving.

[0008] As a further solution of the utility model, the movable part is a connecting rod rotatably mounted on the inner wall of the sleeve, and the contact wheel is mounted on the first end of the connecting rod; the elastic part is a compression spring, and the first end and the second end of the compression spring are respectively fixed to the inner wall of the sleeve and the first side surface of the connecting rod.

[0009] As a further solution of the utility model, the tensioning assembly also includes a base and an adjustment mechanism for adjusting the position of the base, the first end of the compression spring is fixed to the first side surface of the base, and the adjustment mechanism is used to adjust the distance between the base and the inner wall surface of the sleeve to change the position of the first end of the compression spring, thereby achieving the effect of adjusting the initial position of the contact wheel; the first side surface of the base is opposite to the first side surface of the connecting rod.

[0010] As a further solution of the utility model, the adjustment mechanism includes an adjustment screw and a plane bearing that cooperate with the base thread, and the plane bearing is used to rotate the adjustment screw and set it in the sleeve, and rotate the adjustment screw to adjust the position of the base to change the initial position of the contact wheel; the adjustment mechanism also includes a guide screw, which passes through the base and the sleeve at the same time and is respectively provided with locking pieces at both ends, which are used to lock the base and the sleeve through the locking pieces while guiding the base, thereby further increasing the stability of the base.

[0011] As a further solution of the present utility model, a spring guide rod is rotatably arranged on the connecting rod, and the end of the spring guide rod away from the connecting rod passes through a slotted hole opened on the first side surface of the base to enter the inner cavity of the base and is fixed with an anti-retraction part for preventing the spring guide rod from withdrawing from the inner cavity of the base; the inner cavity of the base includes a first wall surface and a second wall surface opposite to each other along the axial direction of the spring guide rod; when the first end of the connecting rod approaches the base, the anti-retraction part will abut against the first wall surface of the inner cavity of the base to make the connecting rod reach the first limit position and stop, and when the first end of the connecting rod is away from the base, the anti-retraction part will abut against the second wall surface of the inner cavity of the base to make the connecting rod reach the second limit position and stop.

[0012] As a further solution of the utility model, the spring guide rod is inserted into the compression spring and a fixing surface for fixing the second end of the compression spring is formed on the spring guide rod; the fixing surface is formed on one side of the spring guide rod facing the base.

[0013] As a further solution of the utility model, the sleeve is manufactured in separate parts.

[0014] As a further solution of the utility model, a material distribution port is provided below the connection between the sleeve and the chute.

[0015] As a further solution of the utility model, the contact wheel is a polyurethane wheel.

[0016] The utility model has the following beneficial effects:

[0017] The device mounts the contact wheel on a tensioning assembly on the inner wall of the sleeve. The tensioning assembly allows the contact wheel to remain in the initial position when not subject to external force, and allows the contact wheel to move within a set stroke when subjected to external force. When the contact wheel contacts the deformed surface of the center guide column during the lifting and lowering process of the sleeve, the contact wheel can smoothly pass through the deformed portion of the center guide column through the movement of the contact wheel, so that the sleeve is more tolerant of the flatness of the outer surface of the center guide column during movement, has lower usage requirements, and is more applicable.

[0018] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is a structural schematic diagram of the material distributing device in the utility model.

[0022] Figure 3 It is a schematic diagram of the internal structure of the sleeve 21 in the present invention.

[0023] Figure 4 It is a schematic diagram of the installation structure of the tensioning assembly in the utility model.

[0024] Figure 5 It is a structural schematic diagram of the tensioning assembly in the utility model.

[0025] Figure 6 It is a structural schematic diagram of the base 34 in the present invention.

[0026] Legend:

[0027] 1. Central material guide column; 11. Feeding port; 21. Sleeve; 22. Chute; 23. Material distribution port; 31. Contact wheel; 32. Connecting rod; 33. Compression spring; 34. Base; 35. Adjusting screw; 36. Lead screw; 37. Spring guide rod; 38. Joint bearing; 341. Slotted hole; 342. First wall surface; 343. Second wall surface; 351. Plane bearing; 371. Fixed surface; DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0029] The present application provides a lifting grain distributor, including a central material guide column 1 and a material distribution device sleeved on the central material guide column 1, the material distribution device includes a sleeve 21 and a chute 22 arranged on the sleeve 21, the sleeve 21 is sleeved on the central material guide column 1 and can move along the axial direction of the central material guide column 1, and the sleeve 21 can be driven to rise and fall on the central material guide column 1 through a lifting device located on the top of the granary, the central material guide column 1 is provided with a circle of discharge openings 11 along the circumferential direction, and multiple circles of discharge openings 11 are provided along the axial direction, the chute 22 is circumferentially arranged on the sleeve 21, and each circle of discharge openings 11 is provided. The number and arrangement of the material openings 11 are the same as those of the chute 22. By controlling the height of the sleeve 21 through the lifting device so that the entrance of the chute 22 is aligned with the discharge opening 11, the grain can be transported to the chute 22 through the discharge opening 11. The end of the chute 22 away from the sleeve 21 is tilted downward, which is used to make the grain slide toward the end away from the sleeve 21 under the action of gravity, so that the landing point of the grain is away from the central guide column 1 to achieve uniform distribution. The lifting and lowering of the sleeve 21 and the discharge openings 11 at different heights on the central guide column 1 can achieve distribution at different heights to prevent the grain from being broken due to excessive discharge height.

[0030] like Figure 1-3 As shown, a plurality of contact units are installed on the inner wall of the sleeve 21, and the contact units include a contact wheel 31 for contacting the central material guide column 1 and a tensioning assembly for installing the contact wheel 31 on the inner wall of the sleeve 21. The tensioning assembly allows the contact wheel 31 to remain in the initial position when not subjected to external force, and allows the contact wheel 31 to move within a set stroke when the contact wheel 31 is subjected to external force, that is, after the contact wheel 31 contacts the central material guide column 1, the contact wheel 31 can prevent the central material guide column 1 from rubbing against the sleeve 21, and can also move within a set stroke in conjunction with the tensioning assembly, so that the contact wheel 31 can pass smoothly when encountering a protrusion or deformation part on the surface of the central material guide column 1 that does not exceed the moving stroke of the contact wheel 31, thereby making the sleeve 21 more inclusive.

[0031] Among them, the arrangement of the contact units in the sleeve 21 and the shape of the sleeve 21, the shape of the central material guide column 1 and the number of chutes 22 are not limited in this application, as long as it can be ensured that the sleeve 21 and the central material guide column 1 will not collide with each other in any direction.

[0032] Figure 3 An example of the installation of the tensioning assembly in the sleeve 21 is shown. In this example, contact units are installed on both sides of the chute 22 on the inner wall of the sleeve 21. At the same time, the contact units are symmetrically arranged along the axial direction of the sleeve 21 about the center of the sleeve 21 to prevent the sleeve 21 from tilting and rubbing against the central material guide column 1.

[0033] An example of a tensioning assembly, in this example, the tensioning assembly includes a connecting rod 32 and a compression spring 33 that rotate on the inner wall of the sleeve 21, the first end of the connecting rod 32 is used to install the contact wheel 31, and the second end of the connecting rod 32 is used to be rotatably connected to the joint bearing 38 fixed to the inner wall of the sleeve 21, that is, the connecting rod 32 can rotate around the hinge axis of the second end and the joint bearing 38 to achieve the effect that the contact wheel 31 can be moved, the first end of the compression spring 33 is fixedly connected to the inner wall of the sleeve 21, and the second end is fixedly connected to the first side surface of the connecting rod 32, and the connecting rod 3 2 faces the inner wall of the sleeve 21, and the spring allows the connecting rod 32 to be maintained at a fixed angle without external force. When the connecting rod 32 is at this angle, the position of the contact wheel 31 is the initial position, and due to the deformable characteristic of the compression spring 33, when the contact wheel 31 contacts the protrusion or deformation position on the central material guide column 1, the contact wheel 31 is squeezed and drives the connecting rod 32 to rotate to compress the compression spring 33, so that the contact wheel 31 can retreat and smoothly pass through the protrusion and deformation position on the central material guide column 1.

[0034] Figure 4Another example of a tensioning assembly is shown. In this example, the tensioning assembly includes a connecting rod 32, a compression spring 33 and a base 34. The first end of the connecting rod 32 is used to install the contact wheel 31, and the second end of the connecting rod 32 is used to be rotatably connected to a joint bearing 38 fixed to the inner wall surface of the sleeve 21. The first end of the compression spring 33 is fixed to the first side surface of the base 34, and the second end of the compression spring 33 is fixed to the first side surface of the connecting rod 32. The first side surface of the base 34 is opposite to the first side surface of the connecting rod 32. The base 34 is threaded with an adjusting screw 35, and the end of the adjusting screw 35 away from the base 34 is rotatably set on the sleeve 21, since the adjusting screw 35 and the base 34 are threadedly matched, the distance between the base 34 and the inner wall of the sleeve 21 can be adjusted by rotating the adjusting screw 35. When the base 34 moves toward the axis of the sleeve 21, it will simultaneously drive the first end of the connecting rod 32 and the contact wheel 31 to approach the axis of the sleeve 21, and vice versa, it will drive the first end of the connecting rod 32 and the contact wheel 31 away from the axis of the sleeve 21 to adjust the initial position of the contact wheel 31. In this example, the initial position of the contact wheel 31 can be changed by adjusting the position of the base 34 to adapt to central material guide columns 1 of different sizes.

[0035] Figure 4-5 An installation example of the adjusting screw 35 is shown. In this example, a plane bearing 351 is fixedly installed on the outer surface of the sleeve 21. The adjusting screw 35 is fixedly connected to a side of the plane bearing 351 away from the sleeve 21 to achieve a rotational connection between the adjusting screw 35 and the sleeve 21. At the same time, one end of the adjusting screw 35 is located outside the sleeve 21, which can facilitate the rotation of the adjusting screw 35.

[0036] Further, such as Figure 4 As shown, the adjustment mechanism also includes a guide screw 36, which is simultaneously passed through the base 34 and the sleeve 21, and a nut is threadedly engaged on the guide screw 36. The base 34 and the sleeve 21 are pressed tightly by the screw head of the guide screw 36 and the nut to increase the stability of the base 34. When the distance between the base 34 and the inner wall surface of the sleeve 21 is reduced, the adjusting screw 35 is directly rotated. When it is necessary to increase the distance between the base 34 and the inner wall surface of the sleeve 21, it is necessary to first loosen the nut on the guide screw 36 so that the nut on the guide screw 36 makes room, and then the adjusting screw 35 can be rotated to move the base 34. The movement of the base 34 is guided by the guide screw 36 and the adjusting screw 35 to limit the direction of movement of the base 34, and the base 34 and the sleeve 21 are pressed tightly by the screw head of the guide screw 36 and the nut engaged on the guide screw 36 to increase the stability of the base 34.

[0037] Further, such as Figure 4-6As shown, a spring guide rod 37 is rotatably provided on the connecting rod 32, the first end of the spring guide rod 37 is used to be rotatably connected with the connecting rod 32, and the second end passes through the slotted hole 341 opened on the first side of the base 34 to enter the inner cavity of the base 34 and threadedly engage with the nut, and the nut on the spring guide rod 37 is used to prevent the second end of the spring guide rod 37 from withdrawing from the inner cavity of the base 34. The inner cavity of the base 34 includes a first wall surface 342 and a second wall surface 343 opposite to each other along the axial direction of the spring guide rod 37. When the contact wheel 31 is squeezed by an external force to make the first end of the connecting rod 32 rotate, the spring guide rod 37 will be on the connecting rod 32 The connecting rod 32 also moves under the drive of the base 34. When the first end of the connecting rod 32 is close to the base 34, the anti-retraction member will abut against the first wall 342 of the inner cavity of the base 34 to limit the first limit position of the connecting rod 32. When the first end of the connecting rod 32 is away from the base 34, the anti-retraction member will abut against the second wall 343 of the inner cavity of the base 34 to limit the second limit position of the connecting rod 32. The first limit position of the connecting rod 32 is the position where the contact wheel 31 is closest to the inner wall of the sleeve 21, and the second limit position of the connecting rod 32 is the position where the contact wheel 31 is farthest from the inner wall of the sleeve 21, thereby achieving the effect of controlling the stroke of the contact wheel 31.

[0038] Further, such as Figure 4 As shown, the spring guide rod 37 is hinged at the middle position of the connecting rod 32, and the travel of the first end of the connecting rod 32 is magnified by the lever to increase the set travel of the contact wheel 31.

[0039] Further, such as Figure 4 As shown, the spring guide rod 37 is inserted into the compression spring 33 to prevent the compression spring 33 from being deformed away from the axial direction.

[0040] like Figure 5 As shown, in some examples, a fixing surface 371 is formed on the spring guide rod 37, and the second end of the compression spring 33 is fixed on the fixing surface 371 formed by the spring guide rod 37, so that the compression spring 33 moves following the spring guide rod 37, and the fixing surface 371 is formed on the side of the spring guide rod 37 facing the base 34.

[0041] like Figure 3 As shown, in some examples, the sleeve 21 is manufactured in a split manner, which can make the transportation of the sleeve 21 more convenient, and because the sleeve 21 is sleeved on the central material guide column 1, by manufacturing the sleeve 21 in a split manner, the sleeve 21 can be assembled on the central material guide column 1 after the installation of the central material guide column 1 is completed. At the same time, during the later maintenance process, the sleeve 21 can be directly removed from the central material guide column 1, which is more convenient for maintenance, providing convenient conditions for early production, transportation, assembly and later maintenance.

[0042] like Figure 2-3As shown, in some examples, a feed distribution port 23 is provided on the sleeve 21, and the opening position of the feed distribution port 23 is located below the chute 22, so that when the sleeve 21 rises to the top of the central material guide column 1, the discharge port 11 of the central material guide column 1 will be aligned with the feed distribution port 23, and grain can continue to be transported into the granary through the feed distribution port 23 to increase the storage capacity.

[0043] Preferably, the contact wheel 31 is a polyurethane wheel to prevent the contact wheel 31 from generating sparks when rubbing against the central material guide column 1, thereby ensuring the safety of the granary.

[0044] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A lifting grain distributor, comprising a central material guide column (1) and a material distribution device sleeved on the central material guide column (1), characterized in that: The material distribution device comprises a sleeve (21) and a chute (22) arranged on the sleeve (21); The sleeve (21) is slidably mounted on the central material guide column (1), and the sleeve (21) is raised and lowered to drive the chute (22) to achieve material distribution at different heights; The end of the chute (22) away from the sleeve (21) is inclined downward, so as to allow the grain to slide in the chute (22) toward the end away from the sleeve (21) under the action of gravity; The inner wall surface of the sleeve (21) is provided with a plurality of contact units for contacting the outer wall surface of the central material guiding column (1) to prevent the sleeve (21) and the central material guiding column (1) from rubbing against each other; The contact unit comprises a contact wheel (31) and a tensioning assembly installed in a sleeve (21), wherein the tensioning assembly provides elastic support for the contact wheel (31) so that the contact wheel (31) contacts the central material guide column (1).

2. A lifting grain distributor according to claim 1, characterized in that: The tensioning assembly includes a movable part and an elastic part; One end of the movable member is connected to the contact wheel (31), and the other end is hinged to the inner wall of the sleeve (21) to limit the degree of freedom of the contact wheel (31); The elastic member is arranged between the movable member and the sleeve (21) to support the movable member so that the movable member can be reset after moving.

3. The lifting grain distributor according to claim 2, characterized in that: The movable member is a connecting rod (32) rotatably mounted on the inner wall surface of the sleeve (21), and the contact wheel (31) is mounted on the first end of the connecting rod (32); The elastic member is a compression spring (33), and the first end and the second end of the compression spring (33) are respectively fixed to the inner wall surface of the sleeve (21) and the first side surface of the connecting rod (32).

4. The lifting grain distributor according to claim 3, characterized in that: The tensioning assembly further comprises a base (34) and an adjusting mechanism for adjusting the position of the base (34); the first end of the compression spring (33) is fixedly arranged on a first side surface of the base (34); the interval between the base (34) and the inner wall surface of the sleeve (21) is adjusted by the adjusting mechanism to change the position of the first end of the compression spring (33), thereby achieving the effect of adjusting the initial position of the contact wheel (31); The first side surface of the base (34) is opposite to the first side surface of the connecting rod (32).

5. The lifting grain distributor according to claim 4, characterized in that: The adjustment mechanism comprises an adjustment screw (35) threadedly matched with the base (34) and a plane bearing (351), wherein the plane bearing (351) is used to rotate the adjustment screw (35) to be disposed on the sleeve (21), and the adjustment screw (35) is rotated to adjust the position of the base (34) to change the initial position of the contact wheel (31); The adjustment mechanism further comprises a guide screw (36), which passes through the base (34) and the sleeve (21) at the same time and is provided with locking members at both ends, so as to guide the base (34) and lock the base (34) and the sleeve (21) through the locking members, thereby further increasing the stability of the base (34).

6. The lifting grain distributor according to claim 4, characterized in that: A spring guide rod (37) is rotatably provided on the connecting rod (32), and one end of the spring guide rod (37) away from the connecting rod (32) passes through a slot-shaped hole (341) provided on a first side surface of the base (34) to enter the inner cavity of the base (34) and is fixed with an anti-retraction member for preventing the spring guide rod (37) from withdrawing from the inner cavity of the base (34); The inner cavity of the base (34) comprises a first wall surface (342) and a second wall surface (343) which are opposite to each other along the axial direction of the spring guide rod (37); When the first end of the connecting rod (32) is close to the base (34), the anti-retraction member will abut against the first wall surface (342) of the inner cavity of the base (34) so ​​that the connecting rod (32) reaches the first limit position and stops; when the first end of the connecting rod (32) is away from the base (34), the anti-retraction member will abut against the second wall surface (343) of the inner cavity of the base (34) so ​​that the connecting rod (32) reaches the second limit position and stops.

7. The lifting grain distributor according to claim 6, characterized in that: The spring guide rod (37) is inserted into the compression spring (33) and a fixing surface (371) for fixing the second end of the compression spring (33) is formed on the spring guide rod (37); The fixing surface (371) is formed on a side of the spring guide rod (37) facing the base (34).

8. The lifting grain distributor according to claim 1, characterized in that: The sleeve (21) is manufactured in separate parts.

9. The lifting grain distributor according to claim 1, characterized in that: A material distribution port (23) is provided below the connection between the sleeve (21) and the chute (22).

10. The lifting grain distributor according to claim 1, characterized in that: The contact wheel (31) is a polyurethane wheel.

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