Sand screening device for road construction

Abstract

The utility model discloses a sand screening device for road construction, which comprises a support, a lifter, a motor and an expansion piece, the support is connected with a moving frame in a sliding manner, the left end of the moving frame is rotatably provided with a screening frame, the lifter is rotatably arranged between the moving frame and the screening frame, the motor is arranged on the support, the motor is fixedly connected with an eccentric wheel, and the eccentric wheel is fixedly connected with the expansion piece. The eccentric wheel is rotationally connected with a push-pull rod, a connecting lug rotationally connected with the push-pull rod is arranged on the side face of the movable frame, the two expansion pieces are installed on the side face of the screen frame, and the expansion pieces are connected with baffles. The double-screw bolts are screwed to support the screen frame upwards so that the screen frame can incline, sand is put into the screen frame, the motor controls the screen frame to move left and right through the moving frame, the sand and impurities are separated, the impurities move to the discharging hopper along the screen frame, the sand can be continuously screened, manual impurity cleaning is not needed, and the continuous sand screening efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to sand screening technical field, concretely is a sand screening device for highway construction. BACKGROUND

[0002] The sand is screened before use, the larger particle impurities such as stone in the sand are screened out, the quality and purity of the sand are improved, and the sand can better play a role in building materials such as concrete and mortar.

[0003] In the related art, a sand efficient screening device for highway construction (publication number CN217289278U) is found by searching, which drives the screening frame to move upward by a driving device, and the screening frame starts to move downward under the action of gravity, then the connecting block extrudes the spring to generate vibration, and the screening frame can reciprocate up and down to achieve the purpose of continuous vibration and complete sand screening.

[0004] However, in the above scheme, when too much sand is screened in the screening frame, the frame door needs to be opened by the handle, and then the impurities at the bottom of the screening frame can be swept out. In the continuous sand screening process, it is necessary to stop work to clean the impurities, which not only affects the sand screening efficiency, but also needs manual operation, which is not suitable for continuous sand screening. SUMMARY

[0005] The utility model aims at providing a sand screening device for highway construction to solve the problems in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a sand screening device for highway construction, comprising a support, a moving frame is slidably connected to the support, a screening frame is rotatably installed at the left end of the moving frame, the moving frame drives the screening frame to reciprocate, realizing sand screening, and the moving frame improves the stability of the screening frame movement;

[0007] A lifter is rotatably installed between the moving frame and the screening frame, the lifter controls the inclination angle of the screening frame, facilitating the automatic sliding of impurities out of the screening frame without manual cleaning of the impurities;

[0008] A motor is installed on the support, and an eccentric wheel is fixedly connected to the motor, the eccentric wheel is rotatably connected to a push-pull rod, the moving frame side is provided with a connecting lug rotatably connected to the push-pull rod, and the reciprocating movement of the screening frame is realized by the motor;

[0009] A telescopic device is provided on both sides of the screening frame, the telescopic device is connected to a baffle, the baffle can prevent sand from flowing down with impurities, and more sand is retained.

[0010] Further, the bracket upper and lower surface installs the guider, the guider is installed to the bracket, the guider guides the mobile frame to translate on the bracket, the guider includes the guide rail and the roller that rolls in the guider, the roller is connected with the mobile frame through the wheel frame, and the roller moves on the guide rail can reduce the resistance of the mobile frame movement, reduces the abrasion.

[0011] Further, the sieve frame left end is fixedly connected with the discharge hopper, the bracket left end is installed with the guide hopper, and the guide hopper is located below the discharge hopper, and the impurities fall on the guide hopper from the discharge hopper, which can prevent the impurities from falling into the sand.

[0012] Further, the lifter includes a threaded cylinder and a threaded rod screwed in the threaded cylinder, a connecting seat is rotatably installed on the upper end of the threaded rod, and the length of the combination of the threaded rod and the threaded cylinder can be changed by screwing the threaded rod, so that the inclination adjustment of the sieve frame is realized.

[0013] Further, the telescopic device includes a sleeve and a supporting rod inserted into the sleeve, a handle bolt abutting against the supporting rod is screwed on the surface of the sleeve, the distance between the baffle and the sieve frame is changed by adjusting the lifting of the supporting rod, and the handle bolt is used to limit the sliding of the supporting rod.

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

[0015] The threaded rod is screwed upward to support the sieve frame to make it inclined, the sand is put into the sieve frame, the motor controls the sieve frame to move left and right through the mobile frame, the sand and impurities are separated, the impurities move along the sieve frame to the discharge hopper, the sand can be continuously screened, manual cleaning of impurities is not required, and the sand continuous screening efficiency is high.

[0016] After the baffle moves downward, the flow speed of the sand in the sieve frame can be blocked, which is beneficial to the full screening of the sand, reduces the content of the sand in the impurities, and improves the yield of pure sand. DRAWINGS

[0017] Figure 1 It is the overall structure schematic view of the utility model;

[0018] Figure 2 It is the structure schematic view of the sieve frame and the baffle connection of the utility model;

[0019] Figure 3 It is the structure schematic view of the connecting seat and the threaded rod connection of the utility model;

[0020] Figure 4 It is the state diagram of the guide hopper support of the utility model.

[0021] In the figure: 1, support; 2, motor; 3, eccentric wheel; 4, push-pull rod; 5, connecting lug; 6, wheel frame; 7, guide rail; 8, roller; 9, moving frame; 10, sieve frame; 11, discharge hopper; 12, limit pin; 13, guide hopper; 14, threaded cylinder; 15, sleeve; 16, baffle; 17, connecting seat; 18, stud; 19, support rod; 20, handle pin; 21, baffle piece. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Embodiment: Please refer to Figures 1-4 The present application provides a technical solution: a sand screening device for highway construction, comprising a support 1, a moving frame 9 is slidably connected to the support 1, a sieve frame 10 is rotatably installed at the left end of the moving frame 9, the moving frame 9 supports the sieve frame 10, and the moving frame 9 drives the sieve frame 10 to move when translating, and the sieve frame 10 screens sand;

[0024] A lifter is rotatably installed between the moving frame 9 and the sieve frame 10, the lifter controls the inclination angle of the sieve frame 10, and the inclined sieve frame 10 can send impurities out, and in the process of moving the sieve frame 10, the impurities are shaken off along the inclined sieve frame 10 and fall to the ground;

[0025] A motor 2 is installed on the support 1, and an eccentric wheel 3 is fixedly connected to the motor 2, the push-pull rod 4 is rotatably connected to the eccentric wheel 3, the moving frame 9 is provided with a connecting lug 5 rotatably connected to the push-pull rod 4, the motor 2 controls the reciprocating motion of the push-pull rod 4 through the eccentric wheel 3, the push-pull rod 4 drives the moving frame 9 to move left and right through the connecting lug 5, and then the motor 2 smoothly drives the sieve frame 10 to move left and right;

[0026] A telescopic device is provided on the side surface of the sieve frame 10, and the telescopic device is connected with a baffle 16, which can limit the rapid flow of sand along the sieve frame 10, preventing the sand from falling to the ground with impurities before being screened.

[0027] In the present embodiment, as Figure 1 shown, a guide is installed on the upper and lower surfaces of the support 1, the guide is installed on the support 1, the guide guides the translation of the moving frame 9 on the support 1, the guide can prevent the moving frame 9 and the support 1 from wearing each other, and also improves the stability of the reciprocating movement of the moving frame 9.

[0028] In this embodiment, as shown in Figure 1 The guide includes guide rails 7 and rollers 8 in rolling contact on the guide, the rollers 8 are connected with the moving frame 9 through a wheel frame 6, the guide rails 7 are distributed up and down and matched with the two rollers 8 up and down, which can position the moving frame 9 and prevent the moving frame 9 from jumping.

[0029] In this embodiment, as shown in Figure 1 The discharge hopper 11 can prevent impurities from falling to the lower part of the support 1 and falling on the sieved sand.

[0030] In this embodiment, as shown in Figure 1 And Figure 4 The guide hopper 13 is installed at the left end of the support 1 and located below the discharge hopper 11, the guide hopper 13 can transport impurities to a place farther away from the support 1, and the lower part of the support 1 is provided with a baffle 21 which can block the flow of sand towards the impurities.

[0031] In this embodiment, as shown in Figure 2 The guide hopper 13 is rotatably connected with the support 1, and a limiting pin 12 is screwed on the guide hopper 13, after the guide hopper 13 is unfolded, the limiting pin 12 is screwed to contact with the support 1, to ensure that the guide hopper 13 will not move.

[0032] In this embodiment, as shown in Figure 1 And Figure 3 The lifter includes a threaded cylinder 14 and a stud 18 screwed in the threaded cylinder 14, the upper end of the stud 18 is rotatably installed with a connecting seat 17, the connecting seat 17 is rotatably installed with the sieve frame 10, the threaded cylinder 14 is rotatably connected with the moving frame 9, when the stud 18 is screwed, the stud 18 moves in the threaded cylinder 14, the stud 18 supports the sieve frame 10 through the connecting seat 17, to adjust the inclination of the sieve frame 10.

[0033] In this embodiment, as shown in Figure 1 And Figure 2 The telescopic device includes a sleeve 15 and a support rod 19 inserted into the sleeve 15, a handle pin 20 is screwed on the surface of the sleeve 15 to abut against the support rod 19, loosening the handle pin 20 can make the support rod 19 move in the sleeve 15, adjusting the distance between the baffle 16 and the sieve frame 10 by the support rod 19 can facilitate to limit the flow space of sand, and tightening the handle pin 20 can limit the movement of the baffle 16.

[0034] Specific, use, the sand to be screened is poured into the screening frame 10, the motor 2 rotates to control the reciprocating translation of the moving frame 9 on the guide rail 7 through the eccentric wheel 3 and the push-pull rod 4, the moving frame 9 drives the screening frame 10 to move, in the process of moving the screening frame 10 left and right, the sand moves in the screening frame 10, the sand with small particle size falls below the support 1 through the screening frame 10, the impurities are left in the screening frame 10, since the screening frame 10 moves in the inclined state, with the movement of the screening frame 10, the impurities roll along the screening frame 10 and fall into the discharge hopper 11, the guide hopper 13 receives the impurities from the discharge hopper 11, and the impurities are a distance away from the screened sand, cooperating with the blocking effect of the baffle 21 on the sand, to avoid the impurities from mixing with the sand again.

[0035] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sand screening device for road construction, characterized in that, Include: Support (1), the mobile frame (9) is slid on the support (1), the left end of the mobile frame (9) is rotatably mounted with a screen frame (10); Lifter, the lifter is rotatably mounted between the mobile frame (9) and the screen frame (10), and the lifter controls the inclination angle of the screen frame (10); Motor (2), the motor (2) is mounted to the support (1), and the motor (2) is fixedly connected with an eccentric wheel (3), the eccentric wheel (3) is rotatably connected with a push-pull rod (4), the mobile frame (9) side is provided with a connecting lug (5) rotatably connected with the push-pull rod (4); The telescopic device is provided with two telescopic devices and is mounted to the side surface of the screen frame (10), and the telescopic device is connected with a baffle (16).

2. A sand screening device for road construction as claimed in claim 1, wherein: The support (1) is mounted with a guider on the upper and lower surfaces, the guider is mounted to the support (1), and the guider guides the mobile frame (9) to translate on the support (1).

3. A sand screening device for road construction as claimed in claim 2, wherein: The guider includes a guide rail (7) and a roller (8) rolling on the guider, the roller (8) is connected with the mobile frame (9) through a wheel frame (6).

4. The sand screening device for road construction as claimed in claim 1, wherein: The left end of the screen frame (10) is fixedly connected with a discharge hopper (11).

5. A sand screening device for road construction as claimed in claim 4, wherein: The left end of the support (1) is mounted with a guide hopper (13), and the guide hopper (13) is located below the discharge hopper (11).

6. A sand screening device for road construction as claimed in claim 5, wherein: The guide hopper (13) is rotatably connected with the support (1), and the guide hopper (13) is screwed with a limiting pin (12).

7. A sand screening device for road construction as claimed in claim 1, wherein: The lifter includes a threaded cylinder (14) and a threaded stud (18) screwed in the threaded cylinder (14), and the threaded stud (18) is rotatably mounted with a connecting seat (17) on the upper end.

8. A sand screening device for road construction as claimed in claim 1, wherein: The telescopic device includes a sleeve (15) and a supporting rod (19) inserted into the sleeve (15), and the sleeve (15) is screwed with a handle pin (20) abutting against the supporting rod (19) on the surface.

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