Semi-automatic screen supplementing device
By designing a semi-automatic screening device, and automatically screening with screen racks and hammers, physical consumption and health problems caused by manual screening in the prior art are solved, and an efficient and safe screening process is achieved.
Patent Information
- Application Number
- CN202421572597.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-04
AI Technical Summary
In the prior art, the screening test of coarse aggregate requires workers to perform manual re-screening, which leads to high physical consumption and heavy burden, and has an impact on workers' physical health.
A semi-automatic screen replenishment device is designed, including a screen rack and a hammer suspended on the screen rack. The screen rack can fix and incline the screen, and the hammer can automatically hit the screen, instead of manual screen replenishment operation.
Through the semi-automatic screening device, artificial physical consumption is reduced, screening efficiency is improved, repeated high-intensity labor is avoided to the body of workers, and the thoroughness and efficiency of screening are ensured.
Smart Images
Figure CN222817307U_ABST
Abstract
Description
Technical Field
[0001] The present embodiment relates to the field of engineering aggregate testing and detection, and specifically to a semi-automatic screening device. Background Art
[0002] Aggregate refers to the granular material used as the main component of concrete and asphalt mixture in engineering. Different projects have different requirements for the particle size, shape and quality of aggregate. Through screening, aggregate can be divided into different particle size levels to meet the needs of different projects. In addition, screening can remove soil, impurities and particles that do not meet the requirements in aggregate, and improve the purity and quality of aggregate. Therefore, screening of aggregate is of great significance in the field of construction engineering.
[0003] In the prior art, the screening test of coarse aggregate requires manual rescreening of the aggregate on each type of sieve after screening by the shaking screen. According to the 2024 "Highway Engineering Aggregate Test Regulations" T0302-2024, workers are required to slightly tilt the screen surface, aim at one side of the sieve and hit it with the base of the hand diagonally upward, about 150 times per minute, and rotate the screen surface every 25 times, each time by about 60°. In actual construction, workers need to perform rescreening in the prescribed manner, which is high-intensity and heavy-duty, and requires too many knocks. For sieves with multiple types of mesh, this step must be performed for each type of sieve. To complete a test, the sieve and aggregate must be tilted and lifted all the time, which consumes a lot of physical strength. In addition, the sieve needs to be "tilted upward and vigorously hit" with the base of the palm thousands of times for a rescreening, which affects the health of the workers. Utility Model Content
[0004] The embodiment of the present specification provides a semi-automatic screening device, including a screen frame for fixing the screen, and a striking hammer suspended on the screen frame to swing and strike the screen, wherein the screen frame includes a fixed frame and an opening and closing frame; one end of the opening and closing frame is hinged to one end of the fixed frame, so that the opening and closing frame can rotate around the fixed frame to close the screen frame, thereby fixing the screen with a hoop; the opening and closing frame can rotate around the fixed frame to open the screen frame, thereby removing the screen.
[0005] The embodiments of the present specification replace the manual labor of holding the screen by designing a bracket that can fix the inclined screen, and the screen frame can be opened and closed to allow the screen to enter and exit and adjust the angle. In addition, the screen frame is provided with a hoop member that hoops the screen, so that the screen can be stably placed inside it. A swingable hammer is hung on the screen frame, which hits the side of the screen when swinging, and violently strikes the screen, replacing manual palm slapping, and the strength and frequency of the hammer can be set, avoiding the physical exhaustion of workers and physical damage. Furthermore, the screening can be more thorough and the screening efficiency is higher.
[0006] Further as a preferred embodiment, the fixing frame includes a first hoop portion, and the opening and closing frame includes a second hoop portion, and when the screen frame is closed, the first hoop portion and the second hoop portion are respectively located on opposite sides of the screen and jointly hoop the screen.
[0007] As a further preferred solution, the first hoop portion includes an upper first hoop member for limiting the top of the screen and a lower first hoop member for limiting the bottom of the screen.
[0008] As a further preferred solution, the second hoop portion includes an upper second hoop member for limiting the top of the screen and a lower second hoop member for limiting the bottom of the screen.
[0009] As a further preferred solution, the first hoop portion and the second hoop portion have different heights, so that the screen is fixed on the screen frame at an angle.
[0010] As a further preferred solution, a buckle is provided at one end of the opening and closing frame for opening and closing, and can be connected to the fixing frame.
[0011] As a further preferred embodiment, the screen frame includes a cantilever rod, one end of which is fixed to the screen frame and the other end of which extends outwardly.
[0012] As a further preferred embodiment, a semicircular ring is provided at one end of the cantilever rod extending outward, and the striking hammer is sleeved on the semicircular ring and swings along the arc of the semicircular ring; when the striking hammer swings inward, it strikes the side of the screen.
[0013] As a further preferred solution, the device also includes a motor for driving the striking hammer to swing.
[0014] Further as a preferred embodiment, the supplementary screening device also includes a plurality of scale marks provided on the upper surface of the screen frame, so that the screen is rotated according to the scale marks.
[0015] The main beneficial effects of the above technical solution are:
[0016] The screen frame that can fix the screen replaces the manual labor of holding the screen and ensures that the screen meets the specified tilt angle. The screen frame can be opened and closed for easy access and angle adjustment. In addition, the screen frame includes a hoop to completely hoop the screen, which is safe and stable. The hammer automatically hits the screen to perform the re-screening operation, replacing the pure manual beating. While improving the screening efficiency, it not only saves manpower but also avoids the harm to workers caused by repeated high-intensity labor.
[0017] Further or more detailed beneficial effects will be described in detail in conjunction with specific examples in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The utility model is further described below in conjunction with the accompanying drawings:
[0019] Figure 1 It is a front view of the semi-automatic screening device of this embodiment.
[0020] Figure 2 It is a top view of the semi-automatic screening device of this embodiment.
[0021] Figure 3 It is a side view of the opening and closing part of the semi-automatic screening device of this embodiment in the open state.
[0022] As shown in the figure: screen frame 1, cantilever rod 11, semicircular ring 12, fixed frame 2, upper first hoop member 21, lower first hoop member 22, opening and closing frame 3, upper second hoop member 31, lower second hoop member 32, buckle 33, striking hammer 4, and scale mark 5. DETAILED DESCRIPTION
[0023] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the specific implementation of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the implementation of the utility model.
[0024] A semi-automatic re-screening device, which can be made of metal, hard plastic, rubber and other materials, supports the screen in an inclined state, and completes the screening by beating with a hammer. In addition to rotating the screen surface, it can automatically complete other re-screening processes. Figure 1 , Figure 2 and Figure 3 As shown, the device of this embodiment includes a screen frame 1, and the screen frame 1 includes a fixed frame 2 and an opening and closing frame 3 that can rotate and open around the fixed frame 2. One end of the opening and closing frame 3 is hinged to one end of the fixed frame 2. When the opening and closing frame 3 is closed, it is clamped with the fixed frame 2 to fix the screen.
[0025] Specifically, the fixing frame 2 in the present embodiment comprises a first hoop portion, and the first hoop portion comprises an upper first hoop member 21 for limiting the top of the screen, and a lower first hoop member 22 for limiting the bottom of the screen. The upper and lower first hoop members are identical in shape and parallel to each other, wherein the lower first hoop member 22 holds up the screen and carries the weight of the screen, and the upper first hoop member 21 is used to limit the movement of the screen in the height direction to prevent it from jumping when being beaten. The upper and lower first hoop members are parallel to each other, and the spacing between the two is matched with the thickness of the screen after combination, that is, slightly larger than the thickness of the combined screen. In the present embodiment, the upper and lower first hoop members have the same structure and are installed in opposite directions. Specifically, the structure is an overall arc-shaped plate-like structure, and the cross-section of the plate-like structure is L-shaped, wherein the side of the L-shape in the horizontal direction is used to cooperate with the second hoop member to realize the hoop of the screen, thereby limiting the position of the screen from the circumferential direction; the side of the L-shape in the up and down directions is used to limit the position of the screen at the top or bottom, so that the relatively arranged upper and lower first hoop members clamp the screen at the required height.
[0026] Further, the opening and closing frame 3 includes a second hoop part whose shape and size match the first hoop part, and the second hoop part includes an upper second hoop member 31 for limiting the top of the screen and a lower second hoop member 32 for limiting the bottom of the screen. Specifically, when the opening and closing frame 3 is closed, the upper first hoop member 21 and the lower first hoop member 22 can be respectively combined with the upper second hoop member 31 and the lower second hoop member 32 to form a closed-shape frame, which is combined with each other and hoops and fixes the screen. In this embodiment, the upper second hoop member 31 and the lower second hoop member 32 are also plate-like structures with the same structure and opposite installation directions, and the side edges thereof in the horizontal direction cooperate with the side edges of the upper and lower first hoop members in the horizontal direction to realize the hoop of the screen and limit the screen from the circumferential direction; the side edges thereof in the up-down direction cooperate with the side edges of the first hoop member in the up-down direction to limit the screen at the top or bottom. Thus, the upper second hoop member 31 and the lower second hoop member 32 clamp the screen within a height that the screen frame can handle, and limit the left-right displacement of the screen so that the screen will not fall out of the screen frame 1 .
[0027] Further preferably, the angle formed by the horizontal direction and the vertical direction side edges of the upper and lower first hoop members and the upper and lower second hoop members can be changed according to the shape of the screen. For example, if the screen is large and expands, the L-shaped cross section can be adaptively adjusted to an open cross section with an obtuse angle to support the screen in a larger range. In addition, the first hoop part and the second hoop part are both provided with rubber pads to reduce the collision force between the screen and the screen frame 1, and increase the friction to prevent the screen from sliding, thereby achieving an anti-slip and shock-absorbing effect.
[0028] Generally speaking, the first hoop portion and the second hoop portion are semicircular arc-shaped, and a hinge is provided at one end of the fixed frame 2, which is connected to one end of the opening and closing frame 3, so that the opening and closing frame 3 can rotate freely around this end point to achieve the opening and closing of the opening and closing frame 3. The two are matched and combined to form a complete cylindrical frame, which can match the most common circular screen. As a preference, scale marks can be added to the upper layer of the screen frame 1. From a top view, if Figure 2 As shown, when the fixed frame 2 and the opening and closing frame 3 are combined into a complete circle, the circle is divided into six equal parts for marking, and the angle between each two marks is 60°. According to the mark, the worker can rotate the screen once according to the mark every 25 times. The specific operation is: open the opening and closing frame 3, hold the screen from the position corresponding to one of the scale marks, rotate the screen clockwise or counterclockwise, and align the position of the hand holding with another adjacent scale mark, that is, complete a rotation operation of supplementary screening. A large number of repeated measurements or inaccurate human estimates are eliminated, making the screening more scientific and sufficient. In some embodiments, the fixed frame 2 and the opening and closing frame 3 can also be combined into a cubic frame to match the rectangular screen. The settings of shape, size and curvature are all to meet actual screening needs.
[0029] Further, the spacing between the upper first hoop member 21 and the lower first hoop member 22 should be equal to the spacing between the upper second hoop member 31 and the lower second hoop member 32. Under this premise, the first hoop portion and the second hoop portion are arranged at different horizontal heights. In other words, the hoop frame assembled by the fixed frame 2 and the opening and closing frame 3 is inclined relative to the horizontal plane, so that the screen placed therein is also in an inclined state, which meets the specifications of the regulations. In some embodiments, the upper second hoop member 31 and the lower second hoop member 32 can be equipped with a guide screw nut or a slide rail equipped with a brake stepping motor to achieve up and down displacement, so that the inclination angle of the screen can be adjusted according to the situation.
[0030] The other end of the opening and closing frame 3 that is not connected, that is, the end that can move freely, is provided with a buckle 33 for connecting with the fixed frame 2. When the opening and closing frame 3 is closed and enters the working state, the buckle is connected and buckled. When the screening is finished or the screen needs to be rotated, the buckle can be opened to conveniently take the screen and operate it. In some embodiments, the buckle is set as an adjustable buckle, and the tightness can be adjusted to a certain extent, so that it can match screens of more sizes, or fix the screen more firmly.
[0031] The screen frame 1 also includes a cantilever rod 11, which is a slender rod, one end of which is fixed to the screen frame 1 and the other end extends outward. A semicircular ring 12 is provided at the end of the cantilever rod 11 extending outward, and the striking hammer 4 is sleeved on the semicircular ring 12 and swings along the arc of the semicircular ring 12. The cantilever rod 11 can be fixed on the fixed frame 2 or on the opening and closing frame 3. The length of the cantilever rod 11 is less than the length of the hammer handle of the striking hammer 4, so that when the striking hammer 4 swings freely, it can touch the side of the screen obliquely upward and inward. Each swing can complete a violent knock on the screen as described in the regulations.
[0032] Preferably, a motor can be added to the cantilever rod 11 to drive the striking hammer 4 to swing back and forth on its own, and the strength and frequency can be manually controlled, thereby saving manpower for striking with the palm of the hand.
[0033] The striking hammer can be installed on the fixing frame 2 or on the opening and closing frame 3. Preferably, in some embodiments, the upper second hoop member 31 and the lower second hoop member 32 are multiple brackets that are discontinuous in sections, and two upper second hoop members 31 are provided at a certain distance in the horizontal direction, and the striking hammer 4 is kept at the same distance from the upper second hoop members 31 on both sides and is located in the middle position. The striking hammer 4 can swing inward through the gap between the two upper second hoop members 31 to strike the screen, and the corresponding lower second hoop members 32 are provided with three corresponding to the positions of the two upper second hoop members 31 and the striking hammer. In some embodiments, the upper second hoop member 31 can be set to be segmented, and the lower second hoop member 32 can be set to be continuous, so as to hoop the screen more stably without affecting the passage of the striking hammer 4. In some embodiments, a striking channel can also be opened on the upper second hoop member 31 and the lower second hoop member 32 according to the travel trajectory of the striking hammer to guide the swing direction of the striking hammer 4 so that it does not deviate during the swinging process, thereby extending the service life of the device.
[0034] Preferably, the supplementary screening device of the present embodiment has a plurality of legs for supporting the screen frame 1. The plurality of legs are fixed to each other at least at the two ends and the midpoint of the fixed frame 2 to keep the center of gravity of the device stable during the beating. The lower end of the leg is provided with a fixed foot, which is in the shape of a flat plate and has a large deadweight, and is also used to stabilize the center of gravity. Workers can also step on the fixed foot to position the device. If the supplementary screening device does not need to be moved, bolts and other fixing components can be installed on the fixed foot to fix the supplementary screening device of the present embodiment at a preset point.
[0035] The beneficial effects that this embodiment may produce include:
[0036] 1. The screen frame that can fix the screen replaces the manual labor of holding the screen and ensures that the screen meets the specified inclination angle. The screen frame can be opened and closed, which is convenient for taking it and adjusting the angle of being struck. In addition, the screen frame has a limited hoop to completely hoop the screen, which is safe and stable to place.
[0037] 2. The hammer automatically strikes the screen to perform re-screening operations, replacing pure manual beating. This improves screening efficiency, saves manpower and avoids the harm to workers caused by repeated high-intensity labor.
[0038] The above is only a preferred embodiment of the utility model, and does not limit the scope of the utility model. In addition, the terms "vertical", "lateral", "front", "rear", etc. mentioned in the embodiments of the utility model indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying 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 utility model. It should be further explained that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like in the description should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.
[0039] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate 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 claims and their equivalents.
Claims
1. A semi-automatic screen replenishing device, comprising a screen frame (1) for fixing a screen, and a striking hammer (4) suspended on the screen frame for swinging and striking the screen, characterized in that: The sieve frame (1) comprises a fixed frame (2) and an opening and closing frame (3); one end of the opening and closing frame (3) is hinged to one end of the fixed frame (2), so that the opening and closing frame (3) can rotate around the fixed frame (2) to close the sieve frame (1), thereby fixing the sieve with a hoop; the opening and closing frame (3) can rotate around the fixed frame (2) to open the sieve frame (1), thereby removing the sieve.
2. A semi-automatic screening device according to claim 1, characterized in that: The fixing frame (2) comprises a first hoop portion, and the opening and closing frame (3) comprises a second hoop portion. When the screen frame (1) is closed, the first hoop portion and the second hoop portion are respectively located on opposite sides of the screen and jointly hoop the screen.
3. A semi-automatic screening device according to claim 2, characterized in that: The first hoop portion comprises an upper first hoop member (21) for limiting the position of the top of the screen, and a lower first hoop member (22) for limiting the position of the bottom of the screen.
4. A semi-automatic screening device according to claim 2, characterized in that: The second hoop portion comprises an upper second hoop member (31) for limiting the position of the top of the screen, and a lower second hoop member (32) for limiting the position of the bottom of the screen.
5. A semi-automatic screening device according to claim 2, characterized in that: The first hoop portion and the second hoop portion have different heights, so that the screen is fixed on the screen frame at an angle.
6. A semi-automatic screening device according to claim 1, characterized in that: One end of the opening and closing frame (3) that is movable for opening and closing is provided with a buckle (33) and can be connected to the fixing frame (2).
7. A semi-automatic screening device according to claim 1, characterized in that: The screen frame (1) comprises a cantilever rod (11), one end of the cantilever rod (11) is fixed to the screen frame (1), and the other end extends outwards.
8. A semi-automatic screening device according to claim 7, characterized in that: A semicircular ring (12) is provided at one end of the cantilever rod (11) extending outward, and the striking hammer (4) is sleeved on the semicircular ring and swings along the arc of the semicircular ring; The striking hammer strikes the side surface of the screen when swinging inward.
9. A semi-automatic screening device according to claim 1, characterized in that: It also includes a motor for driving the striking hammer (4) to swing.
10. A semi-automatic screening device according to claim 1, characterized in that: It also includes a plurality of scale marks (5) arranged on the upper surface of the screen frame (1), so that the screen can be rotated according to the scale marks (5).