Gravel screening device for constructional engineering

Abstract

The utility model discloses a gravel screening device for constructional engineering, which relates to the field of constructional engineering instruments and comprises a frame, a screening mechanism and a driving mechanism, the screening mechanism is arranged on the upper portion of the frame, the driving mechanism is arranged at the bottom of the frame, and the screening mechanism is in driving connection with the driving mechanism. The screening mechanism comprises a screening frame, a sand grain guide plate, a limiting plate, a plurality of screens and a cover plate, the screening frame is slidably arranged on the rack and obliquely arranged, the sand grain guide plate is arranged at the bottom of the screening frame, the limiting plate is transversely installed on the screening frame, clamping grooves are formed in the upper end face and the lower end face of the limiting plate, and elastic limiting mechanisms are arranged on the screens corresponding to the clamping grooves. The screen is arranged between the screening frame and the limiting plate, the screen is clamped in the clamping groove through an elastic limiting mechanism, the cover plates are located on the edges of the left side and the right side of the screening frame, and the limiting plate and the screen are covered with the cover plates. According to the utility model, the screen is convenient to clean, the damaged part of the screen can be quickly replaced, and the whole screen does not need to be replaced.

Description

Technical Field

[0001] The utility model belongs to the field of construction engineering machinery, and in particular relates to a sand and gravel screening device for construction engineering. Background Art

[0002] A sand screening machine is a kind of sand mining machinery that uses screening equipment to separate coarse and fine materials. It screens sand based on the working principle of manually screening sand with an inclined screen. Most of the existing sand screening machines fix the screen with bolts. After long-term use, larger sand particles are stuck in the mesh holes, which makes it difficult to clean these larger sand particles. The sand screening net needs to be removed for cleaning. When the screen is damaged by the impact of sand and gravel, the entire screen needs to be replaced. The problems existing in the prior art are: it is not easy to clean and disassemble. The existing sand screening machine fixes the screen with bolts, which is cumbersome to disassemble, and it is difficult to disassemble and assemble in some positions, which affects the cleaning efficiency of the sand screening net and reduces the use of the sand screening machine.

[0003] Chinese utility model patent CN 220406324 U discloses a sand screening machine that is easy to clean the screen. The sand screening machine is provided with a fixed control mechanism that is easy to replace, so that the screen can be quickly disassembled. However, when a certain part of the screen is damaged or blocked, the sand screening machine can only replace the entire screen, and it is impossible to replace the damaged part of the screen separately, so the maintenance cost of the equipment is high.

[0004] Therefore, how to propose a sand and gravel screening device for construction engineering that can realize the separate replacement of damaged parts of the screen has become a problem that technical personnel in this field need to solve. Utility Model Content

[0005] In view of this, the utility model provides a sand and gravel screening device for construction engineering. The utility model can realize the individual replacement of the gauze at the damaged part by arranging the screen into multiple groups, thereby reducing the equipment maintenance cost.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The sieves are connected to the bottom of the sieve by a spring, and the sieves are connected to the bottom of the sieve by a spring.

[0008] Furthermore, the bottom plate of the screening frame is provided with threaded holes, the limiting plate is provided with countersunk waist holes corresponding to the threaded holes, and the screening frame and the limiting plate are connected with the countersunk waist hole bolts.

[0009] Furthermore, the bottom and top ends of the screening frame are both provided with adjusting screws.

[0010] Furthermore, the elastic limiting mechanism includes a locking pin and a spring, a mounting hole is provided at the end of the frame of the screen, a long hole connected to the mounting hole is provided above the mounting hole, the locking pin is in a ┴ shape, and the locking pin is provided with a toggle rod perpendicular to the locking pin, the locking pin is slidably set in the mounting hole, the toggle rod is correspondingly set in the long hole, the spring is set in the mounting hole, one end of the spring abuts against the bottom of the mounting hole, and the other end of the spring surrounds the locking pin and abuts against the toggle rod.

[0011] Furthermore, the driving mechanism includes a dual-axis motor, a driving wheel, a belt, a driven wheel and a vibration assembly, the dual-axis motor is arranged on a frame, the driving wheel is arranged on the output shafts on both sides of the dual-axis motor, the vibration assembly is arranged on the frame below the screening frame, the driven wheel is arranged on the vibration assembly, and the belt is sleeved on the driving wheel and the driven wheel for driving the vibration assembly to rotate.

[0012] Furthermore, a rubber pad is provided on the inner side of the cover plate.

[0013] The beneficial effects of the utility model are as follows: the utility model arranges the screen into multiple groups and fixes them by limiting plates and cover plates. When the screen is damaged due to the impact of sand and gravel on the screen during the working screening process, only the screen group at the damaged part can be replaced without replacing the entire screen. The replacement process is simple, saving equipment maintenance costs. The screen has high positioning accuracy and can be quickly disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a rear view of the utility model;

[0016] Figure 3 This is a schematic diagram of the installation of the limit plate and the screen of the utility model;

[0017] Figure 4 This is a cross-sectional view of the screen frame of the utility model.

[0018] In the figure: 1-frame; 2-screening frame; 3-sand guide plate; 4-limiting plate; 5-screen; 6-cover plate; 7-guide rod; 8-shock-absorbing spring; 9-countersunk waist hole; 10-locking pin; 11-reset spring; 12-toggle rod; 13-adjusting screw; 14-dual-axis motor. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "horizontal", "inner", "outer", "one side", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a circuit connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] Example 1

[0022] like Figure 1-4 As shown, this embodiment discloses a sand and gravel screening device for construction engineering, including a frame 1, a screening mechanism and a driving mechanism, the screening mechanism is arranged on the upper part of the frame 1, the driving mechanism is arranged at the bottom of the frame 1, and the screening mechanism is drivingly connected to the driving mechanism.

[0023] Specifically, the screening mechanism in this embodiment includes a screening frame 2, a sand guide plate 3, two limit plates 4, three screens 5 and two cover plates 6. The legs of the frame 1 are provided with slide rods 7, and shock-absorbing springs 8 are sleeved on the slide rods 7. The screening frame 2 is provided with guide holes corresponding to the slide rods 7. The screening frame 2 slides on the slide rods 7 through the guide holes and abuts against the shock-absorbing springs 8.

[0024] The screening frame 2 is tilted, and the sand guide plate 3 is arranged at the bottom of the screening frame 2. The tilting direction of the sand guide plate 3 is opposite to that of the screening frame 2. Two limit plates 4 are horizontally installed on the screening frame 2. Specifically, the bottom plate of the screening frame 2 is provided with threaded holes, and the limit plates 4 are provided with countersunk waist holes 9 corresponding to the threaded holes. The screening frame 2 and the limit plates 4 are bolted together through the countersunk waist holes 9. The reverse arrangement of the screening frame 2 and the sand guide plate 3 allows impurities and sand to fall from two directions respectively, thereby achieving effective screening of sand. The arrangement of the countersunk waist holes 9 of the limit plates 4 facilitates the adjustment of the position of the limit plates 4 when the screen 5 is initially installed to avoid the generation of gaps.

[0025] The upper and lower end surfaces of the limiting plate 4 are both provided with a snap-in groove, and the screen 5 is provided with an elastic limiting mechanism corresponding to the snap-in groove. The screen 5 is arranged between the screening frame 2 and the limiting plate 4, and the screen 5 is snapped in the snap-in groove through the elastic limiting mechanism. Specifically, the elastic limiting mechanism includes a locking pin 10 and a reset spring 11, and a mounting hole is arranged at the end of the frame of the screen 5, and a long hole connected to the mounting hole is arranged above the mounting hole. The locking pin 10 is ┴-shaped, and the locking pin 10 is provided with a toggle rod 12 perpendicular to the locking pin 10. The locking pin 10 is slidably arranged in the mounting hole, and the toggle rod 12 is correspondingly arranged in the long hole, and the reset spring 11 is arranged in the mounting hole, one end of the reset spring 11 abuts against the bottom of the mounting hole, and the other end of the reset spring 11 surrounds the locking pin 10 and abuts against the toggle rod 12.

[0026] The cover plate 6 is located at the edges of the left and right sides of the screening frame 2. The cover plate 6 is installed above the limit plate 4 and the screen 5. A rubber pad is arranged on the inner side of the cover plate 6. The rubber pad ensures that the cover plate 6 effectively abuts against the limit plate 4 and the screen 5 to reduce vibration noise.

[0027] As a preferred embodiment of the present invention, the bottom and top ends of the screening frame 2 are provided with adjusting screws 13, and the adjusting screws 13 are threadedly connected to the screening frame 2. The setting of the adjusting screws 13 can facilitate the adjustment of the positions of the limiting plate 4 and the screening frame 2 when the limiting plate 4 is installed for the first time, thereby ensuring that the screen 5 is tightly against the screening frame 2 and the limiting plate 4 to avoid the generation of gaps.

[0028] The driving mechanism includes a dual-axis motor 14, a driving wheel, a belt, a driven wheel and a vibration component. The dual-axis motor 14 is arranged on the frame 1, the driving wheel is arranged on the output shafts on both sides of the dual-axis motor 14, the vibration component is arranged on the frame 1 below the screening frame 2, the driven wheel is arranged on the vibration component, and the belt is arranged on the driving wheel and the driven wheel to drive the vibration component to rotate.

[0029] In the present embodiment, the screen 5 is arranged into three groups, so that the screens 5 at different damaged parts can be replaced conveniently, especially the top screen 5 which is most susceptible to the impact of sand and gravel. When the top screen needs to be replaced, it is only necessary to open the cover plate 6, pull the toggle rod 12 to remove the damaged screen 5 from the limit plate, replace the new screen 5 and then cover the cover plate 6.

[0030] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A sand and gravel screening device for construction engineering, characterized in that: The invention comprises a frame, a screening mechanism and a driving mechanism, wherein the screening mechanism is arranged at the upper part of the frame, the driving mechanism is arranged at the bottom of the frame, the screening mechanism is drivingly connected to the driving mechanism, the screening mechanism comprises a screening frame, a sand guide plate, a limiting plate, a plurality of screens and a cover plate, the screening frame is slidingly arranged on the frame, the screening frame is tilted, the sand guide plate is arranged at the bottom of the screening frame, the inclination direction of the sand guide plate is opposite to that of the screening frame, the limiting plate is transversely installed on the screening frame, the upper and lower end surfaces of the limiting plate are both provided with snap-in grooves, the screen is provided with an elastic limiting mechanism corresponding to the snap-in groove, the screen is arranged between the screening frame and the limiting plate, the screen is snapped in the snap-in groove through the elastic limiting mechanism, the cover plate is located at the edges on the left and right sides of the screening frame, and the cover plate is covered on the limiting plate and the screen.

2. A sand and gravel screening device for construction engineering according to claim 1, characterized in that: The bottom plate of the screening frame is provided with threaded holes, the limiting plate is provided with countersunk waist holes corresponding to the threaded holes, and the screening frame and the limiting plate are connected with the countersunk waist hole bolts.

3. A sand and gravel screening device for construction engineering according to claim 1, characterized in that: The bottom and top ends of the screening frame are both provided with adjusting screws.

4. The sand and gravel screening device for construction engineering according to claim 1, characterized in that: The elastic limiting mechanism includes a locking pin and a spring. A mounting hole is provided at the end of the frame of the screen. A long hole connected to the mounting hole is provided above the mounting hole. The locking pin is in a ┴ shape. The locking pin is provided with a toggle rod perpendicular to the locking pin. The locking pin is slidably arranged in the mounting hole. The toggle rod is correspondingly arranged in the long hole. The spring is arranged in the mounting hole. One end of the spring abuts against the bottom of the mounting hole. The other end of the spring surrounds the locking pin and abuts against the toggle rod.

5. The sand and gravel screening device for construction engineering according to claim 1, characterized in that: The driving mechanism includes a dual-axis motor, a driving wheel, a belt, a driven wheel and a vibration component. The dual-axis motor is arranged on a frame, the driving wheel is arranged on the output shafts on both sides of the dual-axis motor, the vibration component is arranged on the frame below the screening frame, the driven wheel is arranged on the vibration component, and the belt is sleeved on the driving wheel and the driven wheel to drive the vibration component to rotate.

6. The sand and gravel screening device for construction engineering according to claim 1, characterized in that: A rubber pad is arranged on the inner side of the cover plate.

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