A screening device for the production of prestressed concrete hollow slab beams

Abstract

The utility model discloses a screening device for the production of prestressed concrete hollow slab beams, including a bracket, a screening mechanism and a cleaning mechanism. A screening box is fixed to the top of the outer wall of the bracket, and a discharge port is provided at the bottom of the inner wall of the screening box. The screening mechanism is installed in the inner wall of the screening box. The screening device for the production of prestressed concrete hollow slab beams can be provided with a screening mechanism so that when it is necessary to screen the raw materials during concrete preparation, the raw materials can be poured onto the screening net, and when the vibration motor is started, the vibration block cooperates with the elastic telescopic structure composed of a spring and a fixed frame to drive the screening net to vibrate at a high frequency, and the raw materials on the screening net are shaken and screened. Qualified raw materials can fall into the screening box through the screening net, and are discharged and collected through the discharge port, which effectively improves the screening efficiency and effect of the device.

Description

Technical Field

[0001] The utility model relates to the technical field related to concrete production and processing, in particular to a screening device for producing prestressed concrete hollow slab beams. Background Art

[0002] Concrete is a general term for engineering composite materials that are made of aggregates bonded together by cementitious materials. The term concrete usually refers to cement as a cementitious material, sand and stone as aggregates; mixed with water in a certain proportion and obtained by mixing. It is also called ordinary concrete, which is widely used in civil engineering. When making concrete, the raw materials need to be screened, and the raw materials that meet the composite requirements can be used for the pre-setting of concrete. Therefore, there is an urgent need for a screening device for the production of prestressed concrete hollow slab beams.

[0003] A screening device currently used in the production of prestressed concrete hollow slab beams generally adopts a leaky mesh splashing screening, which has a poor screening effect. The gaps in the screen are easily stuck with raw materials, causing blockage and affecting the screening efficiency. After the screening is completed, it is not convenient to remove unqualified products on the screen. Utility Model Content

[0004] The utility model aims to provide a screening device for the production of prestressed concrete hollow slab beams, so as to solve the problem that a screening device for the production of prestressed concrete hollow slab beams currently used in the above-mentioned background technology generally adopts leakage screen splashing screening, the screening effect is not good, the gaps in the screen are easily stuck with raw materials to cause blockage and affect the screening efficiency, and after the screening is completed, it is not convenient to remove unqualified products on the screen.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a screening device for the production of prestressed concrete hollow slab beams, comprising a bracket, a screening mechanism and a cleaning mechanism, a screening box is fixed to the top of the outer wall of the bracket, and a discharge port is arranged at the bottom of the inner wall of the screening box, the screening mechanism is installed in the inner wall of the screening box, the screening mechanism comprises a fixed frame, a spring, a vibration block, a vibration motor and a screening net, the fixed frame is installed in the inner wall of the screening box, and springs are installed on the upper and lower inner walls of the fixed frame, the top of the spring is connected to the vibration block, and a vibration motor is installed at one end of the outer wall of the vibration block, and the other end of the vibration block is connected to the screening net.

[0006] Preferably, the screening net forms a telescopic structure with a fixed frame through a spring, and the spring and the fixed frame include a mounting frame, a driving motor, a rotating frame, a slide, a sliding rod and a scraper, the mounting frame is fixed on the outer wall of the screening box, and a driving motor is installed on one end of the outer wall of the mounting frame, the driving motor output shaft is internally connected to the rotating frame, and the sliding frame is connected to the outer wall of the rotating frame, the sliding rod is penetrated by the inner wall of the sliding frame, and the scraper is connected to the top of the sliding rod.

[0007] Preferably, the scraper forms a movable structure with the slide frame through a slide rod, and the outer wall of the slide rod is tightly fitted with the inner wall of the slide frame.

[0008] Preferably, the scraper forms a rotating structure with the mounting frame through a rotating frame.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The screening device for the production of prestressed concrete hollow slab beams has a screening mechanism, so that when the raw materials for concrete preparation need to be screened, the raw materials can be poured onto the screening net, and the vibration motor is started. Under the elastic telescopic structure composed of the vibration block, spring and fixed frame, the screening net is driven to vibrate at a high frequency, and the raw materials on the screening net are shaken and screened. Qualified raw materials can fall into the screening box through the screening net, and are discharged and collected through the discharge port, which effectively improves the screening efficiency and effect of the device;

[0011] 2. The screening device for the production of prestressed concrete hollow slab beams has a cleaning mechanism. Such a setting can ensure that unqualified raw materials will remain on the outer wall of the screening net after the screening work is completed. The driving motor can be started, and the scraper can be driven to rotate by the driving motor and the rotating frame. The scraper can extend outward when falling under the movable structure of the slide rod and the slide frame, and fit tightly with the outer wall of the screening net. The outer wall of the screening net can be scraped and cleaned by the scraper, and the unqualified raw materials can be removed from the screening net, which is convenient for the device to carry out the next step of repeated screening work, and effectively improves the working efficiency and ease of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the connection structure of the screening mechanism of the utility model;

[0014] Figure 3 It is a schematic diagram of the connection structure of the material cleaning mechanism of the utility model.

[0015] In the figure: 1. bracket; 2. screening box; 3. discharge port; 4. screening mechanism; 401. fixed frame; 402. spring; 403. vibration block; 404. vibration motor; 405. screening net; 5. cleaning mechanism; 501. mounting frame; 502. driving motor; 503. rotating frame; 504. sliding frame; 505. sliding rod; 506. scraper. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-3 The utility model provides a technical solution: a screening device for the production of prestressed concrete hollow slab beams, comprising a bracket 1, a screening mechanism 4 and a cleaning mechanism 5, a screening box 2 is fixed to the top of the outer wall of the bracket 1, and a discharge port 3 is arranged at the bottom of the inner wall of the screening box 2, the screening mechanism 4 is installed in the inner wall of the screening box 2, the screening mechanism 4 comprises a fixed frame 401, a spring 402, a vibration block 403, a vibration motor 404 and a screening net 405, the fixed frame 401 is installed in the inner wall of the screening box 2, and springs 402 are installed on the upper and lower inner walls of the fixed frame 401, the top of the spring 402 is connected to the vibration block 403, and a vibration motor 404 is installed at one end of the outer wall of the vibration block 403, the screening net 405 forms a telescopic structure with the fixing frame 401 through the spring 402, and the spring 402 is symmetrically arranged with the central axis of the fixing frame 401 as the axis, so that when the raw materials for concrete preparation need to be screened, the raw materials can be poured onto the screening net 405, and when the vibration motor 404 is started, the vibration block 403 cooperates with the elastic telescopic structure formed by the spring 402 and the fixing frame 401 to drive the screening net 405 to vibrate at a high frequency, and the raw materials on the screening net 405 are shaken and screened, and qualified raw materials can fall into the screening box 2 through the screening net 405, and are discharged and collected through the discharge port 3, which effectively improves the screening efficiency and effect of the device;

[0018] The other end of the vibration block 403 is connected to a screening net 405. The cleaning mechanism 5 includes a mounting frame 501, a driving motor 502, a rotating frame 503, a slide 504, a slide bar 505 and a scraper 506. The mounting frame 501 is fixed to the outer wall of the screening box 2, and a driving motor 502 is installed at one end of the outer wall of the mounting frame 501. The output shaft of the driving motor 502 is connected to the rotating frame 503 inwardly, and the outer wall of the rotating frame 503 is connected to the slide 504. The inner wall of the slide 504 is penetrated by a slide bar 505, and the top of the slide bar 505 is connected to a scraper 506. This arrangement can be used after the screening work is completed. Unqualified raw materials will remain on the outer wall of the screening net 405. The driving motor 502 can be started, and the scraper 506 can be driven to rotate by the driving motor 502 in cooperation with the rotating frame 503. The scraper 506 can extend outward when falling under the movable structure of the slide bar 505 and the slide frame 504, and fit tightly with the outer wall of the screening net 405. The outer wall of the screening net 405 can be scraped and brushed by the scraper 506 to remove the unqualified raw materials from the screening net 405, so that the device can carry out the next step of repeated screening, thereby effectively improving the working efficiency and ease of use of the device.

[0019] Working principle: When the device is used for work, when it is necessary to screen the raw materials for concrete preparation, the raw materials can be poured onto the screening net 405, and the vibration motor 404 is started. Under the elastic telescopic structure formed by the vibration block 403, the spring 402 and the fixing frame 401, the screening net 405 is driven to vibrate at a high frequency, and the raw materials on the screening net 405 are shaken and screened. Qualified raw materials can fall into the screening box 2 through the screening net 405, and are discharged and collected through the discharge port 3. Secondly, after the screening work is completed, unqualified raw materials will remain on the screening box 2. On the outer wall of the net 405, the driving motor 502 can be started, and the scraper 506 can be driven to rotate by the driving motor 502 in cooperation with the rotating frame 503. The scraper 506 can extend outward when falling under the movable structure of the slide rod 505 and the slide frame 504, and fit tightly with the outer wall of the screening net 405. The outer wall of the screening net 405 can be scraped and cleaned by the scraper 506, and unqualified raw materials can be removed from the screening net 405, which is convenient for the device to carry out the next step of repeated screening. In this way, the operating process of a screening device for the production of prestressed concrete hollow slab beams is completed.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screening device for the production of prestressed concrete hollow slab beams, characterized in that: The invention comprises a support (1), a screening mechanism (4) and a cleaning mechanism (5); a screening box (2) is fixed to the top of the outer wall of the support (1), and a discharge port (3) is arranged at the bottom of the inner wall of the screening box (2); the screening mechanism (4) is installed in the inner wall of the screening box (2); the screening mechanism (4) comprises a fixing frame (401), a spring (402), a vibration block (403), a vibration motor (404) and a screening net (405); the fixing frame (401) is installed in the inner wall of the screening box (2), and springs (402) are installed on the upper and lower inner walls of the fixing frame (401); the top of the spring (402) is connected to the vibration block (403), and one end of the outer wall of the vibration block (403) is installed with a vibration motor (404); the other end of the vibration block (403) is connected to the screening net (405); and the cleaning mechanism (5) is installed at the top of the outer wall of the screening box (2).

2. A screening device for producing prestressed concrete hollow slab beams according to claim 1, characterized in that: The screening net (405) forms a telescopic structure with the fixing frame (401) through the spring (402), and the spring (402) is symmetrically arranged with the central axis of the fixing frame (401) as an axis.

3. A screening device for producing prestressed concrete hollow slab beams according to claim 1, characterized in that: The material cleaning mechanism (5) comprises a mounting frame (501), a driving motor (502), a rotating frame (503), a slide (504), a slide bar (505) and a scraper (506); the mounting frame (501) is fixed on the outer wall of the screening box (2); the driving motor (502) is mounted on one end of the outer wall of the mounting frame (501); the rotating frame (503) is connected inwardly to the output shaft of the driving motor (502); the rotating frame (503) is connected to the outer wall of the rotating frame (503); the slide bar (505) is penetrated through the inner wall of the slide bar (504); and the scraper (506) is connected to the top end of the slide bar (505).

4. A screening device for producing prestressed concrete hollow slab beams according to claim 3, characterized in that: The scraper (506) forms a movable structure through the sliding rod (505) and the sliding frame (504), and the outer wall of the sliding rod (505) is tightly fitted with the inner wall of the sliding frame (504).

5. A screening device for producing prestressed concrete hollow slab beams according to claim 3, characterized in that: The scraper (506) forms a rotating structure through the rotating frame (503) and the mounting frame (501).

Images