Aggregate vibrating screen for construction

Abstract

This utility model relates to the field of building construction technology, and more particularly to a vibrating screen for aggregates in building construction. It includes a material box, a screen plate, a vibrator, an intermediate seat, a base, and a slope adjustment mechanism. The material box has a hollow square structure with openings at the top and front. The screen plate is inclined on the upper part of the inner walls on both sides of the material box, with its front end angled downwards. A fine material plate is inclined below the screen plate, with its front end angled downwards. The vibrator is fixed to the bottom of the fine material plate. The bottom of the material box is connected to the square-shaped intermediate seat by several vibration-damping springs. The two front sides of the bottom of the intermediate seat are hinged to the two front sides of the top of the base. The bottom rear end of the intermediate seat is connected to the top rear end of the base via the slope adjustment mechanism. This utility model can adjust the slope of the screen plate according to the characteristics of different aggregates, thereby achieving the best screening effect.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a vibrating screen for aggregates used in building construction. Background Technology

[0002] During construction, to ensure that concrete or asphalt mixtures have precise mix proportions and excellent quality, aggregates (sand and gravel) need to be graded, screened, and impurities removed according to particle size using an aggregate vibrating screen. However, different aggregates have different characteristics. For dry, free-flowing materials (such as dry sand and small stones), which are easy to pass through the screen, the slope can be appropriately increased to improve the processing speed. For wet, sticky, or highly frictional materials, the slope needs to be reduced to allow for a longer screening time, giving the material a chance to disperse and pass through the screen.

[0003] Based on the above problems, this utility model proposes an aggregate vibrating screen for building construction, which can adjust the slope of the aggregate vibrating screen. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a vibrating screen for aggregates in construction. By setting a screen plate and a fine material plate and cooperating with a slope adjustment mechanism, the slope of the screen plate can be adjusted according to the characteristics of the aggregates to improve the screening effect.

[0005] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: This utility model discloses a vibrating screen for aggregates in construction, including a material box, a screen plate, a vibrator, an intermediate seat, a base, and a slope adjustment mechanism. The material box has a hollow square structure with an open top and front end. The screen plate is provided on the upper part of the inner walls on both sides of the material box and is inclined. The front end of the screen plate is inclined downward. The fine material plate is provided on the lower part of the screen plate and is inclined downward. The vibrator is fixed at the bottom of the fine material plate. The bottom of the material box is connected to the square-shaped intermediate seat by a number of vibration isolation springs. The two sides of the bottom front end of the intermediate seat are hinged to the two sides of the top front end of the base. The bottom rear end of the intermediate seat is connected to the top rear end of the base by the slope adjustment mechanism.

[0006] The intermediate seat and the base are identical rectangular frame structures. The bottom front sides of the intermediate seat are respectively connected to yoke plates. The top front sides of the base are provided with a hinge plate. The bottom center of the yoke plate is provided with a hinge groove for the hinge plate to be inserted. The lower sides of the outer wall of the yoke plate are hinged to the upper side of the outer wall of the hinge plate by a pin.

[0007] The slope adjustment mechanism includes a crossbar, a first connecting rod, a second connecting rod, a fixed base, a slide rail, a lead screw, a movable block, and a motor. The crossbar is located in the middle of the base along the front-rear direction. The fixed base is located on the rear side of the top of the crossbar. The fixed base has a square structure with a protrusion integrally formed at its front top. The slide rail is located on the top of the fixed base along the front-rear direction. The middle of the protrusion is connected to the outer wall of the front end of the lead screw via a bearing. The motor is fixed to the front wall of the protrusion, and the output end of the motor is fixedly connected to the front end of the lead screw. The movable block has a threaded hole in the middle that matches the external thread of the lead screw, and a sliding groove at the bottom of the movable block that slides with the slide rail. The top ends of the two first connecting rods are hinged to the middle of the rear bottom of the intermediate base, and the bottom ends of the first connecting rods are hinged to the lower outer wall of the movable block. The top ends of the two second connecting rods are hinged to the middle of the inner wall of the first connecting rod, and the bottom ends of the second connecting rods are hinged to the middle of the rear bottom of the base.

[0008] The bottom of the fixed base is provided with a square limiting groove, and the bottom sides of the movable block are provided with square extension blocks. The bottom end of the first connecting rod is hinged to the lower part of the outer wall of the extension block. The inner walls of the extension blocks are connected by a limiting rod, which can slide along the limiting groove.

[0009] The top front end of the material box is inclined downwards, and the inclination angle of the top of the material box is the same as the inclination angle of the screen plate; several reinforcing plates are connected between the upper sides of the inner walls of the two sides of the material box; a tensioning mechanism is provided between the side walls of the material box and the two sides of the screen plate.

[0010] The tensioning mechanism includes a tensioning plate, a tensioning bolt, a tensioning nut, and a buffer block. The bottom end of the tensioning plate is connected to the top two sides of the screen plate. The tensioning plate is inclined. The screw of the tensioning bolt passes vertically through the middle of the tensioning plate. The tensioning bolt passes through the side wall of the material box and is threadedly connected to the tensioning nut. The buffer block is provided between the inner wall of the tensioning nut and the outer wall of the material box.

[0011] The buffer block has a circular cross-section and a triangular longitudinal section. The buffer block is axially fitted onto the outer wall of the tensioning bolt's screw. The buffer block is made of rubber.

[0012] The outer wall of the material box is equipped with an "L"-shaped shield.

[0013] The beneficial effects of this utility model are as follows: (1) This utility model sets a screen plate on the upper part of the inner wall of the material box and a fine material plate on the lower part of the screen plate. The material box is vibrated by a vibrator, so as to screen the aggregate on the screen plate for coarse and fine materials. The coarse and fine materials are discharged from the top of the screen plate and the fine material plate respectively. By hinged at the front end between the intermediate seat and the base, and connected at the rear end between the intermediate seat and the base by a slope adjustment mechanism, the slope of the screen plate can be adjusted according to the characteristics of different aggregates, so as to achieve the best screening effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 for Figure 2 A magnified view of a portion of the image; Figure 4 This is a top view of the present invention; Figure 5 for Figure 4 A cross-sectional view along AA; Figure 6 This is a schematic diagram of the tensioning mechanism in this utility model.

[0015] In the attached diagram, 1 is the material box, 2 is the screen plate, 3 is the vibrator, 4 is the intermediate seat, 5 is the base, 6 is the slope adjustment mechanism, 7 is the fine material plate, 8 is the vibration isolation spring, 9 is the yoke plate, 10 is the hinge plate, 11 is the pin, 12 is the reinforcing plate, 13 is the tensioning mechanism, 14 is the shield, 61 is the crossbar, 62 is the first connecting rod, 63 is the second connecting rod, 64 is the fixed seat, 65 is the slide rail, 66 is the lead screw, 67 is the movable block, 68 is the motor, 69 is the protruding block, 70 is the threaded hole, 71 is the slide groove, 72 is the limiting groove, 73 is the extension block, 74 is the limiting rod, 131 is the tensioning plate, 132 is the tensioning bolt, 133 is the tensioning nut, and 134 is the buffer block. Detailed Implementation

[0016] The present invention will be further described below: Please see Figure 1-6 , This utility model discloses a vibrating screen for aggregates used in construction, comprising a material box 1, a screen plate 2, a vibrator 3, an intermediate seat 4, a base 5, and a slope adjustment mechanism 6. The material box 1 has a hollow square structure with openings at the top and front. The screen plate 2 is inclined above the inner walls on both sides of the material box 1, with the front end of the screen plate 2 inclined downward. A fine material plate 7 is inclined below the screen plate 2, with the front end of the fine material plate 7 inclined downward. The vibrator 3 is fixed to the bottom of the fine material plate 7. The bottom of the material box 1 is connected to the square-shaped intermediate seat 4 by several vibration isolation springs 8. The two sides of the bottom front end of the intermediate seat 4 are connected to the base 5. The top front end of the seat 5 is hinged on both sides. The bottom rear end of the intermediate seat 4 is connected to the top rear end of the base 5 through the slope adjustment mechanism 6. This utility model sets a screen plate 2 above the inner wall of the material box 1 and a fine material plate 7 below the screen plate 2. The material box 1 is vibrated by the vibrator 3, thereby screening the aggregate on the screen plate 2 for coarse and fine materials. The coarse and fine materials are discharged from the top of the screen plate 2 and the fine material plate 7, respectively. By hinged at the front end between the intermediate seat 4 and the base 5 and connected at the rear end between the intermediate seat 4 and the base 5 through the slope adjustment mechanism 6, the slope of the screen plate 2 can be adjusted according to the characteristics of different aggregates, thereby achieving the best screening effect.

[0017] Furthermore, the intermediate seat 4 and the base 5 are square frame structures with the same shape. The bottom front end of the intermediate seat 4 is connected to the two sides of the yoke plate 9 respectively. The top front end of the base 5 is provided with the hinge plate 10 between the two sides. The bottom center of the yoke plate 9 is provided with a hinge groove for the hinge plate 10 to be inserted. The lower sides of the outer wall of the yoke plate 9 are hinged to the upper side of the outer wall of the hinge plate 10 by a pin 11.

[0018] Furthermore, the slope adjustment mechanism 6 includes a crossbar 61, a first connecting rod 62, a second connecting rod 63, a fixed base 64, a slide rail 65, a lead screw 66, a movable block 67, and a motor 68. The crossbar 61 is located in the middle of the base 5 along the front-rear direction. The fixed base 64 is located on the rear side of the top of the crossbar 61. The fixed base 64 has a square structure, with a protrusion 69 integrally formed on its front top. The slide rail 65, arranged along the front-rear direction, is located on the top of the fixed base 64. The middle of the protrusion 69 is connected to the outer wall of the front end of the lead screw 66 via a bearing. The motor 68 is fixed to the front wall of the protrusion 69, and the output end of the motor 68 is fixedly connected to the front end of the lead screw 66. The movable block 67 has a threaded hole 70 in the middle that matches the external thread of the lead screw 66, and a sliding groove 71 at the bottom of the movable block 67 that slides with the slide rail 65. The two first connecting rods 62 and 63 are connected in a series of components. The top end of the first connecting rod 62 is hinged to the bottom of the rear end of the intermediate seat 4, and the bottom end of the first connecting rod 62 is hinged to the lower outer wall of the movable block 67. The top ends of the two second connecting rods 63 are hinged to the middle of the inner wall of the first connecting rod 62, and the bottom ends of the second connecting rods 63 are hinged to the bottom of the rear end of the base 5. When it is necessary to adjust the slope of the screen plate 2, the motor 68 is turned on. The output end of the motor 68 drives the lead screw 66 to rotate. Since the bottom slide groove 71 of the movable block 67 slides with the slide rail 65 and the threaded hole 70 in the middle of the movable block 67 matches the external thread of the lead screw 66, the rotation of the lead screw 66 can move the movable block 67 axially, thereby driving the bottom end of the first connecting rod 62, which is hinged to the lower outer wall, to move laterally. The second connecting rod 63 can support the middle of the first connecting rod 62, changing the distance between the intermediate seat 4 and the rear end of the base 5, thereby realizing the adjustment of the slope of the screen plate 2.

[0019] Furthermore, the bottom of the fixed base 64 is provided with a square limiting groove 72, and the bottom sides of the movable block 67 are provided with square extension blocks 73. The bottom end of the first connecting rod 62 is hinged to the lower outer wall of the extension block 73. The inner walls of the extension blocks 73 are connected by a limiting rod 74. The limiting rod 74 can slide along the limiting groove 72 and can play a limiting role to ensure that the movable block 67 will not detach from the lead screw 66 during the slope adjustment process.

[0020] Furthermore, the top front end of the material box 1 is inclined downwards, and the inclination angle of the top of the material box 1 is the same as the inclination angle of the screen plate 2; several reinforcing plates 12 are connected between the upper sides of the inner walls of the two sides of the material box 1. By setting the reinforcing plates 12, the connection strength of the material box 1 can be improved and its service life can be extended; a tensioning mechanism 13 is provided between the side wall of the material box 1 and the two sides of the screen plate 2. The tensioning mechanism 13 tensions the screen plate 2, so that the screen plate 2 maintains sufficient tension, avoids deformation and twisting of the screen plate due to relaxation during vibration, ensures that the screen plate is always in a flat state, maintains the normal shape and size of the screen holes, and ensures screening accuracy.

[0021] Furthermore, the tensioning mechanism 13 includes a tensioning plate 131, a tensioning bolt 132, a tensioning nut 133, and a buffer block 134. The bottom end of the tensioning plate 131 is connected to the top two sides of the screen plate 2. The tensioning plate 131 is inclined. The screw of the tensioning bolt 132 passes vertically through the middle of the tensioning plate 131. The tensioning bolt 132 passes through the side wall of the material box 1 and is threadedly connected to the tensioning nut 133. The buffer block 134 is provided between the inner wall of the tensioning nut 133 and the outer wall of the material box 1. When tensioning is required, the user first fixes the tensioning bolt 132 with a tool, and then tightens the tensioning nut 133 to tension the screen plate. The inclined arrangement of the tensioning bolt 132 allows the tensioning mechanism to apply a downward force to the screen plate 2 during the tensioning process. This effectively counteracts the lateral and longitudinal stresses generated by material impact and vibration, enhances the structural stability of the screen plate, and extends its service life.

[0022] Furthermore, the buffer block 134 has a circular cross-section and a triangular longitudinal section. The buffer block 134 is axially fitted onto the outer wall of the tension bolt 132. The buffer block 134 is made of rubber, which allows the tension nut 133 to be tensioned better and avoids wear between the tension nut 133 and the outer wall of the material box 1.

[0023] Furthermore, an "L"-shaped shield 14 is provided on the upper part of the outer wall of the material box 1, which can protect the tensioning nut 132 and buffer block 134 and other parts on the outside of the tensioning mechanism 13, and extend their service life.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A vibrating screen for aggregates used in construction, characterized in that: It includes a material box (1), a screen plate (2), a vibrator (3), an intermediate seat (4), a base (5), and a slope adjustment mechanism (6). The material box (1) has a hollow square structure with an opening at the top and front. The inner walls on both sides of the material box (1) are provided with the inclined screen plate (2). The front end of the screen plate (2) is inclined downward. The bottom of the screen plate (2) is provided with the inclined fine material plate (7). The front end of the fine material plate (7) is inclined downward. The vibrator (3) is fixed at the bottom of the fine material plate (7). The bottom of the material box (1) is connected to the square-shaped intermediate seat (4) by a number of vibration isolation springs (8). The two sides of the bottom front end of the intermediate seat (4) are hinged to the two sides of the top front end of the base (5). The bottom rear end of the intermediate seat (4) is connected to the top rear end of the base (5) by the slope adjustment mechanism (6).

2. The aggregate vibrating screen for construction as described in claim 1, characterized in that: The intermediate seat (4) and the base (5) are square frame structures with the same shape. The bottom front of the intermediate seat (4) is connected to the two sides of the bottom front of the intermediate seat (4) respectively. The top front of the base (5) is provided with a hinge plate (10). The bottom of the yoke plate (9) is provided with a hinge groove for the hinge plate (10) to be inserted. The lower sides of the outer wall of the yoke plate (9) are hinged to the upper side of the outer wall of the hinge plate (10) by a pin (11).

3. The aggregate vibrating screen for building construction according to claim 2, characterized in that: The slope adjustment mechanism (6) includes a crossbar (61), a first connecting rod (62), a second connecting rod (63), a fixed seat (64), a slide rail (65), a lead screw (66), a movable block (67), and a motor (68). The crossbar (61) is provided in the middle of the base (5) along the front-back direction. The fixed seat (64) is provided on the rear side of the top of the crossbar (61). The fixed seat (64) has a square structure and a protrusion (69) is integrally formed on the top of its front end. The slide rail (65) is provided on the top of the fixed seat (64) along the front-back direction. The middle part of the protrusion (69) is connected to the outer wall of the front end of the lead screw (66) through a bearing. The motor (68) is fixed on the front wall of the protrusion (69). The output end of the motor (68) is fixedly connected to the front end of the lead screw (66). The movable block (67) has a threaded hole (70) in the middle that matches the external thread of the lead screw (66), and the bottom of the movable block (67) has a sliding groove (71) that slides in conjunction with the slide rail (65). The top ends of the two first connecting rods (62) are hinged to the middle of the rear bottom of the intermediate seat (4), and the bottom end of the first connecting rod (62) is hinged to the lower outer wall of the movable block (67); the top ends of the two second connecting rods (63) are hinged to the middle of the inner wall of the first connecting rod (62), and the bottom end of the second connecting rod (63) is hinged to the middle of the rear bottom of the base (5).

4. The aggregate vibrating screen for building construction according to claim 3, characterized in that: The bottom of the fixed base (64) is provided with a square limiting groove (72), and the bottom sides of the movable block (67) are provided with square extension blocks (73). The bottom end of the first connecting rod (62) is hinged to the lower outer wall of the extension block (73). The inner walls of the extension blocks (73) are connected by a limiting rod (74), and the limiting rod (74) can slide along the limiting groove (72).

5. A vibrating screen for aggregates used in construction according to claim 4, characterized in that: The top front end of the material box (1) is inclined downward, and the inclination angle of the top of the material box (1) is the same as the inclination angle of the sieve plate (2); several reinforcing plates (12) are connected between the upper sides of the inner walls of the two sides of the material box (1); a tensioning mechanism (13) is provided between the side wall of the material box (1) and the two sides of the sieve plate (2).

6. A vibrating screen for aggregates used in construction according to claim 5, characterized in that: The tensioning mechanism (13) includes a tensioning plate (131), a tensioning bolt (132), a tensioning nut (133), and a buffer block (134). The bottom end of the tensioning plate (131) is connected to the top two sides of the screen plate (2). The tensioning plate (131) is inclined. The screw of the tensioning bolt (132) passes vertically through the middle of the tensioning plate (131). The tensioning bolt (132) passes through the side wall of the material box (1) and is threadedly connected to the tensioning nut (133). The buffer block (134) is provided between the inner wall of the tensioning nut (133) and the outer wall of the material box (1).

7. A vibrating screen for aggregates used in construction according to claim 6, characterized in that: The buffer block (134) has a circular cross-section and a triangular longitudinal section. The buffer block (134) is axially fitted onto the outer wall of the tensioning bolt (132). The buffer block (134) is made of rubber.

8. A vibrating screen for aggregates used in construction according to claim 7, characterized in that: The outer wall of the material box (1) is provided with an "L"-shaped shield (14).

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