Small sand screening device for civil construction engineering

Abstract

The utility model relates to the technical field of sand screening, in particular to a small sand screening device for civil construction engineering, which comprises a rectangular frame support, two Y-shaped supports are symmetrically arranged on the front side and the rear side of the left end of the rectangular frame support, and two idler wheels are respectively hinged to two ends of the upper portion of each Y-shaped support through two hinge shafts. The two rolling wheels are connected with the outer wall of the roller ring in a rolling mode, the right end of the roller ring is fixedly connected with the large opening end of a conical-barrel-shaped gauze element, the small opening end of the conical-barrel-shaped gauze element is fixedly connected with a rotating connecting disc, the left end and the right end of the roller ring are provided with an outer protective cover and an inner protective cover respectively, the large opening end of the outer protective cover faces leftwards, and the large opening end of the inner protective cover faces rightwards. The radius of the large opening of the outer shield and the inner shield is larger than the maximum distance between the roller on the outermost side and the axis of the roller ring; a moving wheel assembly is arranged on the left side of the bottom end of the rectangular frame support, and a hand-push support is arranged at the right end of the rectangular frame support. The small sand screening device is convenient to move, and the service life of the small sand screening device can be prolonged.

Description

Technical Field

[0001] This utility model relates to the field of sand screening technology, and in particular to a small sand screening device for civil engineering projects. Background Technology

[0002] Civil engineering refers to the construction of civil facilities. In my country, civil facilities refer to various buildings, structures, and equipment set up within the planned construction area of ​​urban areas and towns (townships) to provide paid or free public goods and services to residents based on government responsibility and obligations. The construction of various public infrastructure supporting urban life falls under the scope of civil engineering, such as common urban roads, bridges, subways, and various pipelines closely related to daily life: rainwater, sewage, water supply, greywater, electricity (outside the designated area), telecommunications, heating, gas, etc. The construction of squares and urban green spaces also falls under the scope of civil engineering.

[0003] In civil engineering construction, sand screening equipment is used to screen sand for subsequent use. For example, Chinese patent application number CN202122926799.5 discloses a small sand screening machine for construction engineering. This small sand screening machine needs to be lifted or raised as a whole when moving, which is inconvenient. At the same time, this small sand screening machine does not have a protective mechanism at the entrance end of the conical screen. When sand is shoveled into the conical screen, sand can easily enter the connection between the roller frame and the rolling bearing, which will cause rapid wear of the roller frame and the rolling bearing. Utility Model Content

[0004] The purpose of this utility model is to provide a small sand screening device for civil engineering projects to solve the technical problems existing in the background art.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A small sand screening device for civil engineering includes: a rectangular frame support, a hinge shaft, and a roller ring. Two Y-shaped supports are symmetrically arranged on the front and rear sides of the left end of the rectangular frame support. Two rollers are hinged to the upper ends of the Y-shaped supports via two hinge shafts, and the rollers are respectively connected to the outer wall of the roller ring. A conical mesh is fixedly connected to the right end of the roller ring, and a rotating connecting plate is fixedly connected to the small end of the conical mesh. The rotating connecting plate is detachably fixedly connected to a drive assembly that drives its axial rotation. An outer protective cover and an inner protective cover are respectively provided at the left and right ends of the roller ring. Both the outer and inner protective covers are conical, with the large end of the outer protective cover facing left and the large end of the inner protective cover facing right. The radius of the large opening of the outer and inner protective covers is greater than the maximum distance between the outermost roller and the axis of the roller ring. A movable wheel assembly is provided on the left side of the bottom end of the rectangular frame support, and a hand-push bracket is provided on the right end of the rectangular frame support.

[0007] Furthermore, the upper V-shaped opening of the Y-shaped bracket faces the axis of the roller ring, the center-to-center distance between the inner two rollers of the four rollers on the two Y-shaped brackets is less than the outer diameter of the roller ring, and the center-to-center distance between the outer two rollers of the four rollers on the two Y-shaped brackets is greater than the outer diameter of the roller ring.

[0008] Furthermore, the outer wall of the roller ring is provided with an annular protrusion in the middle, and the outer wall of the roller is provided with an annular groove that cooperates with the annular protrusion in the middle.

[0009] Furthermore, several diagonal braces are evenly arranged between the roller ring and the rotating connecting disc, and all the diagonal braces are in close contact with the outer wall of the conical mesh.

[0010] Furthermore, the drive assembly includes: a fixed bracket, fasteners, a connector, a motor output shaft, and a motor. The fixed bracket is fixedly connected to the middle of the right end of the rotating connecting plate. The connector is detachably fixedly connected to the fixed bracket via fasteners. The connector is fixedly connected to the left end of the motor output shaft. The right end of the motor output shaft is fixedly connected to a motor output terminal.

[0011] Furthermore, it also includes: bearing 1, L-shaped support plate, motor bracket and reinforcing rib. The L-shaped support plate is fixedly connected to the top right side of the rectangular frame support. The motor output shaft passes through bearing 1 and is rotatably connected to the middle position of the upper part of the L-shaped support plate. The bottom end of the motor is fixedly connected to the top of the motor bracket. The motor bracket is L-shaped and is fixedly connected to the lower right end of the L-shaped support plate. The reinforcing rib is welded and fixed to the right-angled inner end of the motor bracket.

[0012] Furthermore, the fastener includes a bolt and a nut, the fixed bracket has a through hole 1 extending vertically, the connector has a through hole 2 extending vertically, the bolt passes through the through hole 1 and the through hole 2 in sequence and is threaded to the nut at the outer end of the fixed bracket.

[0013] Furthermore, the movable wheel assembly includes: uprights, crossbars, bearings, and movable wheels. There are two uprights, which are symmetrically fixedly connected to the left front and rear sides of the bottom end of the rectangular frame support. The bottom ends of the two uprights are fixedly connected to the front and rear sides of the outer wall of the crossbar. The front and rear ends of the crossbar are respectively rotatably connected to two movable wheels through two bearings.

[0014] Furthermore, there are two hand-push brackets symmetrically arranged front and back. Each hand-push bracket includes an L-shaped handle and a support leg. The support leg is inclined upward from left to right. The right end of the support leg is fixedly connected to the left side of the bottom end of the L-shaped handle. The left end of the vertical part of the L-shaped handle is fixedly connected to the right end of the rectangular frame support. When the support leg is placed parallel to the ground, the lower inclined side of the conical mesh is parallel to the ground or inclined downward from left to right relative to the ground.

[0015] Furthermore, a connecting brace is fixedly connected between the horizontal portions of the L-shaped handles of the two push-arm brackets, and a placement plate for placing heavy objects is fixedly connected to the top of the legs of the two push-arm brackets.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] The entire device can be easily moved by the set movable wheel assembly and the hand-push bracket; by setting an outer protective cover and an inner protective cover on the outside and inside of the roller ring at the large opening end of the conical mesh, sand can be prevented from entering between the roller and the roller ring, thus avoiding rapid wear of the roller ring and roller. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a longitudinal sectional view of the present invention at the roller;

[0020] Figure 3 This is a bottom view of the present invention;

[0021] Figure 4 This is a transverse longitudinal sectional view of the present invention.

[0022] The labels in the attached diagram are as follows: 1-Rectangular frame support, 2-Y-shaped bracket, 3-Hinge shaft, 4-Roller, 5-Roller ring, 6-Conical mesh, 7-Rotating connecting plate, 8-Fixed bracket, 9-Fastener, 10-Connector, 11-Motor output shaft, 12-Motor, 13-Bearing 1, 14-L-shaped support plate, 15-Motor bracket, 16-Reinforcing rib, 17-Outer cover, 18-Inner cover, 19-Diagonal brace, 20-Upright pole, 21-Horizontal bar, 22-Bearing 2, 23-Moving wheel, 24-Hand-push bracket, 25-Connecting support, 26-Placement plate. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] See Figures 1-4As shown, a small sand screening device for civil engineering is characterized by comprising: a rectangular frame support 1, a hinge shaft 3, and a roller ring 5. Two Y-shaped supports 2 are symmetrically arranged on the front and rear sides of the left end of the rectangular frame support 1. Two rollers 4 are hinged to the upper ends of the Y-shaped supports 2 via the two hinge shafts 3. The two rollers 4 are respectively rolled and connected to the outer wall of the roller ring 5. The right end of the roller ring 5 is fixedly connected to the large end of a conical mesh 6, and the small end of the conical mesh 6 is fixedly connected to a rotating connecting disc 7. The receiving plate 7 is detachably fixedly connected to a drive assembly that drives its axial rotation. The left and right ends of the roller ring 5 are respectively provided with an outer protective cover 17 and an inner protective cover 18. Both the outer protective cover 17 and the inner protective cover 18 are conical. The large opening end of the outer protective cover 17 faces to the left, and the large opening end of the inner protective cover 18 faces to the right. The large opening radius of the outer protective cover 17 and the inner protective cover 18 is greater than the maximum distance between the outermost roller 4 and the axis of the roller ring 5. A movable wheel assembly is provided on the left side of the bottom end of the rectangular frame support 1, and a hand-push bracket 24 is provided on the right end of the rectangular frame support 1.

[0025] In this embodiment, the upper V-shaped opening of the Y-shaped bracket 2 faces the axis of the roller ring 5. The axis distance between the inner two rollers 4 on the two Y-shaped brackets 2 is smaller than the outer diameter of the roller ring 5, and the axis distance between the outer two rollers 4 on the two Y-shaped brackets 2 is larger than the outer diameter of the roller ring 5. The roller ring 5 can be well supported by the four rollers 4 in conjunction with the two Y-shaped brackets 2, and the roller ring 5 can also be prevented from falling off.

[0026] In this embodiment, an annular protrusion is provided in the middle of the outer wall of the roller ring 5, and an annular groove is provided in the middle of the outer wall of the roller 4 to cooperate with the annular protrusion. The annular protrusion and the annular groove can further improve the stability of the connection between the roller ring 5 and the roller 4.

[0027] In this embodiment, a plurality of diagonal bracing rods 19 are evenly arranged between the roller ring 5 and the rotating connecting disc 7. The plurality of diagonal bracing rods 19 are all in close contact with the outer wall of the conical mesh 6. The diagonal bracing rods 19 can ensure the support strength of the conical mesh 6 under load.

[0028] In this embodiment, the drive assembly includes: a fixed bracket 8, a fastener 9, a connector 10, a motor output shaft 11, and a motor 12. The fixed bracket 8 is fixedly connected to the middle of the right end of the rotating connecting plate 7. The connector 10 is detachably fixedly connected to the fixed bracket 8 via the fastener 9. The connector 10 is fixedly connected to the left end of the motor output shaft 11, and the output end of the motor 12 is fixedly connected to the right end of the motor output shaft 11. The assembly also includes: a bearing 13, an L-shaped support plate 14, a motor bracket 15, and reinforcing ribs 16. The L-shaped support plate 14 is fixedly connected to the right side of the top of the rectangular frame support 1. The motor output shaft 11 is rotatably connected through the bearing 13. At the upper middle position of the L-shaped support plate 14, the bottom end of the motor 12 is fixedly connected to the top of the motor bracket 15. The motor bracket 15 is L-shaped and is fixedly connected to the lower right end of the L-shaped support plate 14. The reinforcing rib 16 is welded and fixed to the right-angled inner end of the motor bracket 15. The fastener 9 includes a bolt and a nut. The fixing bracket 8 has a through hole 1 that runs vertically through it, and the connector 10 has a through hole 2 that runs vertically through it. The bolt passes through the through hole 1 and the through hole 2 in sequence and is threaded to the nut at the outer end of the fixing bracket 8. The fastener 9 facilitates the quick installation or removal of the conical mesh, which in turn facilitates subsequent cleaning or replacement.

[0029] In this embodiment, the movable wheel assembly includes: uprights 20, crossbars 21, bearings 22, and movable wheels 23. There are two uprights 20, which are symmetrically fixedly connected to the front and rear left sides of the bottom end of the rectangular frame support 1. The bottom ends of the two uprights 20 are fixedly connected to the front and rear sides of the outer wall of the crossbar 21. The front and rear ends of the crossbar 21 are respectively rotatably connected to two movable wheels 23 through two bearings 22.

[0030] In this embodiment, there are two hand-push brackets 24 arranged symmetrically at the front and back. The hand-push bracket 24 includes an L-shaped handle and a support leg. The support leg is inclined upward from left to right. The right end of the support leg is fixedly connected to the left side of the bottom end of the L-shaped handle. The left end of the vertical part of the L-shaped handle is fixedly connected to the right end of the rectangular frame support 1. When the support leg is placed parallel to the ground, the lower inclined side of the conical mesh 6 is parallel to the ground or inclined downward from left to right relative to the ground, so that the sand shoveled in will not slip out from the large opening end of the conical mesh 6.

[0031] In this embodiment, a connecting support 25 is fixedly connected between the horizontal portions of the L-shaped handles of the two push brackets 24, and a placement plate 26 for placing heavy objects is fixedly connected to the top of the legs of the two push brackets 24. Placing heavy objects on the placement plate 26 can ensure the stability of the entire device in the working state.

[0032] When using the device, the operator pushes or pulls the entire device to the location on the construction site where sand screening is required, using the hand-operated support 24 and the moving wheel assembly. Then, the support legs are placed parallel to the ground, and a weight is placed on the placement plate 26. Next, the motor 12 is started, driving the motor output shaft 11 to rotate. This, in turn, drives the rotating connecting plate 7 to rotate via the connector 10, fasteners 9, and fixed support 8. The rotating connecting plate 7 then drives the conical mesh 6 and the roller ring 5 to rotate. At this point, the operator... Sand can be sieved by shoveling the sieve into the wide end of the conical mesh 6. Since the left and right ends of the roller ring 5 are respectively equipped with an outer cover 17 and an inner cover 18, both of which are conical, the wide end of the outer cover 17 faces to the left and the wide end of the inner cover 18 faces to the right. The radius of the wide end of the outer cover 17 and the inner cover 18 is greater than the maximum distance between the outermost roller 4 and the axis of the roller ring 5. Therefore, sand will not enter between the roller 4 and the roller ring 5, thus avoiding rapid wear of the roller ring 5 and the roller 4.

[0033] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent substitutions, and improvements made by those skilled in the art to the above embodiments without departing from the scope of the present utility model's technical solution and based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model's technical solution.

Claims

1. A small sand screening device for civil engineering projects, characterized in that, include: The rectangular frame support (1), hinge shaft (3), and roller ring (5) are provided. Two Y-shaped brackets (2) are symmetrically arranged on the front and rear sides of the left end of the rectangular frame support (1). Two rollers (4) are hinged to the upper ends of the Y-shaped brackets (2) through the two hinge shafts (3). The two rollers (4) are respectively connected to the outer wall of the roller ring (5). The right end of the roller ring (5) is fixedly connected to the large end of the conical mesh (6). The small end of the conical mesh (6) is fixedly connected to the rotating connecting plate (7). The rotating connecting plate (7) is detachably fixedly connected to a drive mechanism. The drive assembly for axial rotation has an outer cover (17) and an inner cover (18) respectively provided at the left and right ends of the roller ring (5). Both the outer cover (17) and the inner cover (18) are conical. The large opening of the outer cover (17) faces to the left, and the large opening of the inner cover (18) faces to the right. The large opening radius of the outer cover (17) and the inner cover (18) is greater than the maximum distance between the outermost roller (4) and the axis of the roller ring (5). A movable wheel assembly is provided on the left side of the bottom end of the rectangular frame support (1), and a hand-push bracket (24) is provided on the right end of the rectangular frame support (1).

2. The small sand screening device for civil engineering projects according to claim 1, characterized in that: The upper V-shaped opening of the Y-shaped bracket (2) faces the axis of the roller ring (5). The distance between the axes of the two inner rollers (4) on the two Y-shaped brackets (2) is less than the outer diameter of the roller ring (5). The distance between the axes of the two outer rollers (4) on the two Y-shaped brackets (2) is greater than the outer diameter of the roller ring (5).

3. The small sand screening device for civil engineering as described in claim 1, characterized in that: The outer wall of the roller ring (5) is provided with an annular protrusion in the middle, and the outer wall of the roller (4) is provided with an annular groove that cooperates with the annular protrusion in the middle.

4. A small sand screening device for civil engineering projects according to claim 1, characterized in that: A number of diagonal braces (19) are evenly arranged between the roller ring (5) and the rotating connecting disc (7), and the diagonal braces (19) are all in close contact with the outer wall of the conical mesh (6).

5. A small sand screening device for civil engineering projects according to claim 1, characterized in that: The drive assembly includes: a fixed bracket (8), a fastener (9), a connector (10), a motor output shaft (11), and a motor (12). The fixed bracket (8) is fixedly connected to the middle of the right end of the rotating connecting plate (7). The connector (10) is detachably fixedly connected to the fixed bracket (8) via the fastener (9). The connector (10) is fixedly connected to the left end of the motor output shaft (11). The output end of the motor (12) is fixedly connected to the right end of the motor output shaft (11).

6. A small sand screening device for civil engineering projects according to claim 5, characterized in that: Also includes: The components include a bearing (13), an L-shaped support plate (14), a motor bracket (15), and a reinforcing rib (16). The L-shaped support plate (14) is fixedly connected to the right side of the top of the rectangular frame support (1). The motor output shaft (11) passes through the bearing (13) and is rotatably connected to the middle position of the upper part of the L-shaped support plate (14). The bottom end of the motor (12) is fixedly connected to the top of the motor bracket (15). The motor bracket (15) is L-shaped and is fixedly connected to the lower right end of the L-shaped support plate (14). The reinforcing rib (16) is welded and fixed to the right-angled inner end of the motor bracket (15).

7. A small sand screening device for civil engineering projects according to claim 5, characterized in that: The fastener (9) includes a bolt and a nut. The fixed bracket (8) has a through hole that runs vertically through the top and bottom. The connector (10) has a through hole that runs vertically through the bottom and bottom. The bolt passes through the through hole and the through hole in sequence and is threaded to the nut at the outer end of the fixed bracket (8).

8. A small sand screening device for civil engineering projects according to claim 1, characterized in that: The movable wheel assembly includes: uprights (20), crossbars (21), bearings (22) and movable wheels (23). There are two uprights (20), which are symmetrically fixedly connected to the front and rear left sides of the bottom of the rectangular frame support (1). The bottom ends of the two uprights (20) are fixedly connected to the front and rear sides of the outer wall of the crossbar (21). The front and rear ends of the crossbar (21) are respectively rotatably connected to two movable wheels (23) through two bearings (22).

9. A small sand screening device for civil engineering projects according to claim 1, characterized in that: Two hand-push brackets (24) are symmetrically arranged in front and back. The hand-push brackets (24) include: an L-shaped handle and a support leg. The support leg is inclined upward from left to right. The right end of the support leg is fixedly connected to the left side of the bottom end of the L-shaped handle. The left end of the vertical part of the L-shaped handle is fixedly connected to the right end of the rectangular frame support (1). When the support leg is placed parallel to the ground, the lower inclined side of the conical mesh (6) is parallel to the ground or inclined downward from left to right relative to the ground.

10. A small sand screening device for civil engineering projects according to claim 9, characterized in that: A connecting brace (25) is fixedly connected between the horizontal parts of the L-shaped handles of the two push brackets (24), and a placement plate (26) for placing heavy objects is fixedly connected to the top of the legs of the two push brackets (24).

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