Gravel screening device for earth-rock engineering construction

Abstract

The utility model relates to the field of earth-rock engineering, and discloses a gravel screening device for earth-rock engineering construction, which comprises a box body, a disassembly and assembly component is arranged in the box body, a feeding mechanism is arranged at the rear end of the top of the box body, the feeding mechanism comprises a feeding hopper, the feeding hopper is fixedly arranged at the rear end of the top of the box body, and a discharging hopper is arranged at the rear end of the top of the box body. A fixed plate is fixedly installed on the front portion of the feeding hopper, a contraction groove is formed in the fixed plate, a baffle is movably installed at the position, penetrating through the bottom of the fixed plate and located in the contraction groove, of the fixed plate, and a plurality of guide rail grooves are formed in the front portion of the baffle; and a first screw rod is movably mounted at the top of the baffle plate and penetrates through the top of the fixed plate. Through sliding of a first screw rod and a baffle, the feeding amount of the gravel is convenient to adjust, and the situation that screening of the gravel at the upper end is affected due to thick gravel accumulation is prevented; through a clamping seat and a second screw rod, the sieve plate can be conveniently and quickly disassembled, assembled and cleaned, and sieve plates with different pore diameters can be replaced.

Description

Technical Field

[0001] This utility model relates to the field of earthwork engineering, specifically a sand and gravel screening device for earthwork engineering construction. Background Technology

[0002] Earthwork engineering involves site leveling, excavation, transportation, and filling of earth and stone during construction, road and bridge, and water conservancy projects. Different earthwork projects, such as roadbed filling and building foundation pouring, have specific requirements for the particle size of sand and gravel, which need to be screened to remove oversized or undersized particles that do not meet the requirements.

[0003] The publication number CN215902141U discloses a sand and gravel screening device for earthwork construction, which includes a screening box, two partitions, a first screening plate, a second screening plate, two third screening plates, and two storage bins; a feeding port is provided at the top center of the screening box.

[0004] The above-mentioned screening device can achieve four-stage screening based on the different diameters of sand and gravel. However, during feeding, due to the thick accumulation of sand and gravel, the sand and gravel at the top cannot be fully screened, making it inconvenient to adjust the amount of sand and gravel fed. Furthermore, different construction sites require different particle sizes for screening, making it inconvenient to quickly disassemble and replace the screen plate. Utility Model Content

[0005] The purpose of this utility model is to provide a sand and gravel screening device for earthwork construction, so as to solve the technical problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A sand and gravel screening device for earthwork construction includes a box body. A disassembly and assembly assembly is installed inside the box body. A feeding mechanism is installed at the rear end of the top of the box body. The feeding mechanism includes a feeding hopper, which is fixedly installed at the rear end of the top of the box body. A fixing plate is fixedly installed at the front of the feeding hopper. A shrinkage groove is formed inside the fixing plate. A baffle is movably installed inside the shrinkage groove, penetrating the bottom of the fixing plate. Several guide rail grooves are formed at the front of the baffle. A first screw is movably installed at the top of the baffle, penetrating the top of the fixing plate. A knob is fixedly installed at the top end of the first screw.

[0008] Preferably, the baffle is located in the shrinkage groove and is slidably arranged up and down, and the length between the two ends of the baffle matches the distance between the inner walls on both sides of the box.

[0009] Preferably, the bottom end of the first screw is connected to the baffle via a bearing, and the first screw passes through the interior of the fixed plate in a threaded connection.

[0010] Preferably, the disassembly assembly includes two sets of mounting brackets and a screen plate. The two sets of mounting brackets are respectively fixedly installed on the inner walls of both sides of the housing. The screen plate is movably installed between the two sets of mounting brackets. Two fixing columns are fixedly installed on the top of the mounting brackets. A second screw is movably connected through the fixing columns and the interior of the mounting brackets. A handle is fixedly installed on the front end of the screen plate. A first discharge plate is installed on the front part of the housing. A collecting plate is fixedly installed inside the housing and directly below the screen plate. A second discharge plate is installed on one side of the front end of the collecting plate.

[0011] Preferably, the sieve plate is slidably disposed between the two sets of card seats, and a rubber pad is disposed between the card seats and the sieve plate.

[0012] Preferably, the second screw is threaded through the inside of the fixed column, and the bottom end of the second screw is engaged with the reserved holes on both sides of the top of the sieve plate.

[0013] Preferably, the aggregate plate is located inside the box and is arranged at an angle.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1) This sand and gravel screening device, by setting a feeding mechanism, the first screw drives the baffle to slide up and down, so that the distance between the bottom end of the baffle and the screen plate changes, which makes it easy to adjust the amount of sand and gravel fed and prevents the sand and gravel from accumulating too thickly and affecting the screening of the sand and gravel at the top.

[0016] 2) This sand and gravel screening device, by setting up a disassembly and assembly component, the screen plate is located between two sets of brackets and fixed by the second screw. The screen plate can be slid back and forth by the handle, which facilitates the quick disassembly and cleaning of the screen plate and allows for the replacement of screen plates with different apertures. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a sand and gravel screening device for earthwork construction according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the internal structure of the feeding mechanism in an embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the disassembly and assembly components in an embodiment of this utility model.

[0020] In the diagram: 1. Box body; 2. Assembly / disassembly assembly; 3. Feeding mechanism; 4. Feed hopper; 5. Fixing plate; 6. Shrinkage groove; 7. Baffle; 8. Guide rail groove; 9. First screw; 10. Knob; 11. Card seat; 12. Screen plate; 13. Fixing column; 14. Second screw; 15. Handle; 16. First discharge plate; 17. Collecting plate; 18. Second discharge plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] Combination Figures 1-3 A sand and gravel screening device for earthwork construction includes a box 1, a disassembly and assembly assembly 2 installed inside the box 1, and a feeding mechanism 3 installed at the rear end of the top of the box 1.

[0024] See Figure 2 Furthermore, the feeding mechanism 3 includes a feeding hopper 4, which is fixedly installed on the top of the housing 1 near the rear end. A fixing plate 5 is fixedly installed on the front of the feeding hopper 4. A shrinkage groove 6 is opened inside the fixing plate 5. A baffle 7 is movably installed through the bottom of the fixing plate 5 and inside the shrinkage groove 6. Several guide rail grooves 8 are opened on the front of the baffle 7. A first screw 9 is movably installed on the top of the baffle 7 and through the top of the fixing plate 5. A knob 10 is fixedly installed on the top of the first screw 9.

[0025] The baffle 7 is located in the shrinkage groove 6 and is slidably arranged up and down. The length between the two ends of the baffle 7 matches the distance between the inner walls on both sides of the box 1. The baffle 7 is used to block the accumulated sand and gravel and is guided and slid by the guide rail groove 8.

[0026] The bottom end of the first screw 9 is connected to the baffle 7 by a bearing. The first screw 9 passes through the inside of the fixed plate 5 and is threaded. The first screw 9 drives the baffle 7 to slide up and down to adjust the amount of sand and gravel fed.

[0027] Specifically, sand and gravel are added into the feed hopper 4, and the sand and gravel are screened by the vibration of the vibrators on both sides of the box 1. The first screw 9 drives the baffle 7 to slide up and down to adjust the amount of sand and gravel fed, so as to prevent accumulation from affecting the screening of the upper part of the sand and gravel.

[0028] Example 2

[0029] See Figure 3Furthermore, based on Embodiment 1, the disassembly assembly 2 includes two sets of card holders 11 and a screen plate 12. The two sets of card holders 11 are fixedly installed on the inner walls of both sides of the housing 1. The screen plate 12 is movably installed between the two sets of card holders 11. Two fixing columns 13 are fixedly installed on the top of the card holders 11. A second screw 14 is movably connected through the fixing columns 13 and the inside of the card holders 11. A handle 15 is fixedly installed on the front end of the screen plate 12. A first discharge plate 16 is installed on the front of the housing 1. A collecting plate 17 is fixedly installed inside the housing 1 and directly below the screen plate 12. A second discharge plate 18 is installed on one side of the front end of the collecting plate 17.

[0030] The screen plate 12 is slidably positioned between two sets of card holders 11. A rubber pad is provided between the card holders 11 and the screen plate 12. The rubber pad in the interlayer separates the card holders 11 and the screen plate 12, reducing the noise generated by the contact vibration of the metal parts.

[0031] The second screw 14 passes through the inside of the fixed column 13 and is threaded. The bottom end of the second screw 14 is engaged with the reserved holes on both sides of the top of the screen plate 12. The second screw 14 slides up and down through the thread and engages with the reserved holes of the screen plate 12, which facilitates the installation and disassembly of the screen plate 12.

[0032] The collecting plate 17 is located inside the box 1 and is set at an angle. The small particles of sand and gravel screened out fall onto the collecting plate 17 and are discharged through the second discharge plate 18.

[0033] Specifically, the screen plate 12 is inserted between two sets of clamps 11 and is fixed by the second screw 14, which facilitates the disassembly and replacement of the screen plate 12. The sand and gravel are screened by the screen plate 12, and the small particles of sand and gravel screened out are collected by the collection plate 17.

[0034] In actual operation, sand and gravel are added into the feed hopper 4, and the vibration is generated by the vibrators on both sides of the box 1, so that the sand and gravel are screened through the screen plate 12. The screened sand and gravel are discharged through the first discharge plate 16 and the second discharge plate 18 respectively.

[0035] When adjusting the feed rate, the sand and gravel accumulate in the feed hopper 4. By rotating the knob 10, the first screw 9 drives the baffle 7 to slide up and down under the action of the screw thread, thereby changing the distance between the bottom end of the baffle 7 and the screen plate 12, thus adjusting the feed rate of the sand and gravel and preventing the sand and gravel from accumulating too thickly and affecting the screening of the sand and gravel at the top.

[0036] When disassembling and assembling, the screen plate 12 is located between the two sets of brackets 11 and is fixed by engaging with the reserved hole on the top of the screen plate 12 through the second screw 14. Rotate the second screw 14 to disengage from the reserved hole on the top of the screen plate 12, and slide the screen plate 12 forward through the handle 15 to remove it, so as to replace the screen plate 12 with a different aperture, which facilitates the disassembly and assembly of the screen plate 12.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sand and gravel screening device for earthwork construction, comprising a housing (1), characterized in that: The box (1) is equipped with a disassembly assembly (2) inside, and a feeding mechanism (3) is installed on the top of the box (1) near the rear end; The feeding mechanism (3) includes a feeding hopper (4), which is fixedly installed at the rear end of the top of the box (1). A fixing plate (5) is fixedly installed at the front of the feeding hopper (4). A shrinkage groove (6) is provided inside the fixing plate (5). A baffle (7) is movably installed through the bottom of the fixing plate (5) and inside the shrinkage groove (6). A plurality of guide rail grooves (8) are provided at the front of the baffle (7). A first screw (9) is movably installed at the top of the baffle (7) and through the top of the fixing plate (5). A knob (10) is fixedly installed at the top of the first screw (9).

2. The sand and gravel screening device for earthwork construction according to claim 1, characterized in that: The baffle (7) is located in the shrinkage groove (6) and is slidably arranged up and down. The length between the two ends of the baffle (7) matches the distance between the inner walls on both sides of the box (1).

3. The sand and gravel screening device for earthwork construction according to claim 1, characterized in that: The bottom end of the first screw (9) is connected to the baffle (7) by a bearing, and the first screw (9) is threaded through the inside of the fixed plate (5).

4. The sand and gravel screening device for earthwork construction according to claim 1, characterized in that: The disassembly and assembly assembly (2) includes two sets of card holders (11) and a screen plate (12). The two sets of card holders (11) are fixedly installed on the inner walls of the two sides of the box body (1). The screen plate (12) is movably installed between the two sets of card holders (11). Two fixing columns (13) are fixedly installed on the top of the card holders (11). A second screw (14) is movably connected through the fixing columns (13) and the card holders (11). A handle (15) is fixedly installed at the front end of the screen plate (12). A first discharge plate (16) is installed at the front of the box body (1). A collection plate (17) is fixedly installed inside the box body (1) and directly below the screen plate (12). A second discharge plate (18) is installed on one side of the front end of the collection plate (17).

5. The sand and gravel screening device for earthwork construction according to claim 4, characterized in that: The sieve plate (12) is slidably positioned between two sets of card seats (11), and a rubber pad is provided between the card seats (11) and the sieve plate (12).

6. The sand and gravel screening device for earthwork construction according to claim 4, characterized in that: The second screw (14) is threaded through the inside of the fixed column (13), and the bottom end of the second screw (14) is snapped into the reserved holes on both sides of the top of the sieve plate (12).

7. The sand and gravel screening device for earthwork construction according to claim 4, characterized in that: The aggregate plate (17) is located inside the box (1) and is set at an angle.

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