Portable sand screening equipment

Abstract

The utility model discloses portable sand screening equipment which comprises a folding frame, a folding net and a telescopic frame, the folding frame comprises a pair of U-shaped arms, at least one connecting arm is arranged between the end of each U-shaped arm and the end of the other U-shaped arm, every two adjacent connecting arms are connected through a first rotating component, and the connecting arms and the U-shaped arms are connected through a second rotating component. The folding net comprises a pair of first filter screens and at least one second filter screen, every two adjacent second filter screens are connected through a second rotating component, the first filter screen and the adjacent second filter screen are connected through a second rotating component, the telescopic frame is hinged to one U-shaped arm, and at least one limiting rope is connected to the telescopic frame; locking mechanisms are arranged between every two adjacent connecting arms and between the U-shaped arms and the adjacent connecting arms, after the folded folding frame, the folded folding net and the telescopic frame are unfolded, the telescopic frame is rotated to enable the limiting ropes to be tensioned, the sand screening equipment can be used after being placed on the ground, and the folded sand screening equipment is small in size and convenient to carry.

Description

Technical Field

[0001] The utility model relates to the technical field related to sand screening, and in particular to a portable sand screening device. Background Art

[0002] The sand screening machine can filter out sand and gravel that are too large in volume in the sand pile. Sand and gravel that are smaller in volume than the filter will fall down, and large sand and gravel will be filtered out by the filter to obtain sand and gravel that meets the use requirements.

[0003] Although automatic sand screening machines are already available in the prior art, they are inconvenient to carry and transport. Therefore, many projects with low construction volume will assemble simple sand screening devices on site using wire mesh and wooden frames. The assembled sand screening devices are also inconvenient to carry. After the construction is completed, the simple sand screening devices will be disassembled and the on-site materials will need to be reassembled into a simple sand screening device at another construction site. Therefore, it is necessary to design a portable sand screening equipment. Utility Model Content

[0004] In view of the above technical problems, the purpose of the present utility model is to overcome the problem that the sand screening device in the prior art is inconvenient to carry.

[0005] In order to achieve the above-mentioned object, the utility model provides a portable sand screening device, comprising: a folding frame, a folding net assembled on the folding frame, and a telescopic frame;

[0006] The folding frame includes a pair of hollow U-shaped arms, at least one hollow connecting arm is provided between the end of each U-shaped arm and the end of the other U-shaped arm, and the two adjacent connecting arms and the connecting arm and the U-shaped arm are connected by a first rotating member. The folding net includes a pair of first filter nets fixedly connected to the two U-shaped arms and at least one second filter net assembled on the two opposite connecting arms, and the two adjacent second filter nets and the first filter net and the adjacent second filter net are connected by a second rotating member. One end of the telescopic frame is hinged to one of the U-shaped arms, and at least one limiting rope connected to the U-shaped arm is connected to the telescopic frame. A locking mechanism is provided between the two adjacent connecting arms and between the U-shaped arm and the adjacent connecting arm.

[0007] Preferably, the first rotating member includes a pair of parallel rotating shafts and rotating arms axially connected to the pair of rotating shafts, wherein one rotating shaft is axially connected to the end of the connecting arm, and the other rotating shaft is axially connected to the end of the corresponding connecting arm or U-shaped arm.

[0008] Preferably, the second rotating member includes a pair of connecting plates and a transition plate located between the pair of connecting plates and having two opposite sides hinged to the corresponding connecting plates through hinge shafts, one of the connecting plates is fixedly connected to the edge of the second filter screen, and the other connecting plate is fixedly connected to the edge of the corresponding second filter screen or the first filter screen, and a pair of hinge shafts are respectively arranged coaxially with the corresponding rotating shafts.

[0009] Preferably, both ends of the hinge shaft are respectively assembled on both ends of the U-shaped arm or on the ends of two opposite connecting arms.

[0010] Preferably, the locking mechanism includes a sliding arm and a handle fixedly connected to the sliding arm, the sliding arm is slidably arranged in the connecting arm or the U-shaped arm, and the connecting arm and the U-shaped arm are both provided with a strip-shaped through groove for the corresponding handle to pass through, and the sliding arm can slide away from the hinge of the telescopic frame to be inserted into the adjacent connecting arm or U-shaped arm.

[0011] Preferably, the sliding arm is provided with a recessed groove for avoiding the end of the hinge shaft.

[0012] Preferably, the end of the telescopic frame away from the hinge is equipped with a supporting foot.

[0013] According to the above technical solution, the utility model provides a portable sand screening equipment, which has the following beneficial effects when in use: the folding frame is opened, the folding net is also unfolded accordingly, and then the telescopic frame is stretched out, the telescopic frame is rotated so that the limit rope is tightened, and the folding frame and the telescopic frame are placed on the ground at one end away from the hinge point of the two. At this time, the folding frame and the filter net are in an inclined state after being unfolded, so that sand screening can be carried out. The folded sand screening equipment is small in size, easy to carry, and can be reused.

[0014] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation methods; and the parts not involved in the present invention are the same as the existing technology or can be implemented by using the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a three-dimensional structure diagram of a portable sand screening device provided by this utility model when in use Figure 1 ;

[0017] Figure 2 This is a three-dimensional structure diagram of a portable sand screening device provided by this utility model when in use Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of a portable sand screening device provided by the present invention when folded;

[0019] Figure 4 This is a portable sand screening equipment provided by this utility Figure 1 A magnified schematic diagram of point A in the middle;

[0020] Figure 5 This is a partially exploded schematic diagram of a portable sand screening device provided by the present invention;

[0021] Figure 6 It is a partial three-dimensional structural diagram of a portable sand screening device provided by the present invention.

[0022] Description of Reference Numerals

[0023] 1. Telescopic frame; 2. U-shaped arm; 3. Connecting arm; 4. First filter screen; 5. Second filter screen; 6. Limiting rope; 7. Rotating shaft; 8. Rotating arm; 9. Connecting plate; 10. Articulated shaft; 11. Transition plate; 12. Sliding arm; 13. Handle; 14. Strip groove; 15. Support foot. DETAILED DESCRIPTION

[0024] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0025] In the present invention, unless otherwise stated, directional words such as "upper, lower, inside, outside" contained in a term merely represent the orientation of the term in normal usage, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term.

[0026] like Figure 1-6 As shown, a portable sand screening device comprises: a folding frame, a folding net assembled on the folding frame and a telescopic frame 1;

[0027] The folding frame includes a pair of hollow U-shaped arms 2, and at least one hollow connecting arm 3 is provided between the end of each U-shaped arm 2 and the end of the other U-shaped arm 2. The two adjacent connecting arms 3 and the connecting arm 3 and the U-shaped arm 2 are connected by a first rotating member. The folding net includes a pair of first filter nets 4 fixedly connected to the two U-shaped arms 2 and at least one second filter net 5 assembled on two opposite connecting arms 3. The two adjacent second filter nets 5 and the first filter net 4 and the adjacent second filter net 5 are connected by a second rotating member. One end of the telescopic frame 1 is hinged to one of the U-shaped arms 2, and at least one limiting rope 6 connected to the U-shaped arm 2 is connected to the telescopic frame 1. A locking mechanism is provided between the two adjacent connecting arms 3 and between the U-shaped arm 2 and the adjacent connecting arm 3.

[0028] The telescopic frame 1 is an existing mature technology, and other working principles and its structure are not described in this article.

[0029] When it needs to be used, the foldable folding frame is opened, and the connecting arms 3 and the U-shaped arms 2 will rotate around the corresponding connections, so that a pair of U-shaped arms 2 and several connecting arms 3 are located in the same plane, and the adjacent connecting arms 3 or the connecting arms 3 and the U-shaped arms 2 are fixed by the locking mechanism. When the folding frame is opened, the folding net is also unfolded accordingly. Then, after the telescopic frame 1 is stretched out, the telescopic frame 1 is rotated around the hinge away from the folding frame, so that the angle between the telescopic frame 1 and the folding frame increases until the limiting rope 6 is tightened, and the folding frame and the telescopic frame 1 are placed on the ground at one end away from the hinge. At this time, the folding frame and the filter net are in an inclined state after unfolding, so that sand screening can be carried out. The folded sand screening equipment is small in size, easy to carry, and can be reused.

[0030] The first rotating member includes a pair of parallel rotating shafts 7 and rotating arms 8 axially connected to the pair of rotating shafts 7, wherein one rotating shaft 7 is axially connected to the end of the connecting arm 3, and the other rotating shaft 7 is axially connected to the end of the corresponding connecting arm 3 or U-shaped arm 2.

[0031] When the folding frame is folded, the connecting arms 3 or the U-shaped arms 2 rotate around the corresponding rotating shafts 7 , so that two adjacent connecting arms 3 or a connecting arm 3 and an adjacent U-shaped arm 2 come into contact.

[0032] The second rotating member includes a pair of connecting plates 9 and a transition plate 11 located between the pair of connecting plates 9 and with opposite sides hinged to the corresponding connecting plates 9 through hinge shafts 10. One of the connecting plates 9 is fixedly connected to the edge of the second filter screen 5, and the other connecting plate 9 is fixedly connected to the edge of the corresponding second filter screen 5 or the first filter screen 4. The pair of hinge shafts 10 are respectively coaxially arranged with the corresponding rotating shafts 7.

[0033] The two hinge shafts 10 correspond to the two rotating shafts 7 of the first rotating member respectively, so when the folding frame is unfolded or folded, the folding net can be driven to unfold or fold.

[0034] The two ends of the hinge shaft 10 are respectively assembled on the two ends of the U-shaped arm 2 or on the ends of the two opposite connecting arms 3, which can always keep the hinge shaft 10 coaxial with the corresponding rotating shaft 7 so that the folding net can be folded and unfolded smoothly.

[0035] The locking mechanism includes a sliding arm 12 and a handle 13 fixedly connected to the sliding arm 12. The sliding arm 12 is slidably arranged in the connecting arm 3 or the U-shaped arm 2. The connecting arm 3 and the U-shaped arm 2 are both provided with a strip-shaped through-slot 14 for the corresponding handle 13 to pass through. The sliding arm 12 can slide away from the hinge of the telescopic frame 1 to be inserted into the adjacent connecting arm 3 or U-shaped arm 2.

[0036] After the folding frame is unfolded, the handle 13 can be pushed to drive the sliding arm 12 to slide in the corresponding connecting arm 3 or U-shaped arm 2, so that the sliding arm 12 can be inserted into the adjacent connecting arm 3 or U-shaped arm 2; when the sliding arm 12 is inserted into the adjacent connecting arm 3 or U-shaped arm 2, the unfolded folding frame can always be located in the same plane.

[0037] The slide arm 12 is provided with a recessed groove for circumventing the end of the hinge shaft 10 .

[0038] The end of the telescopic frame 1 away from the hinge is equipped with a supporting foot 15.

[0039] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0040] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0041] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A portable sand screening device, characterized in that: include: A folding frame, a folding net assembled on the folding frame, and a telescopic frame (1); The folding frame comprises a pair of hollow U-shaped arms (2), at least one hollow connecting arm (3) is provided between the end of each U-shaped arm (2) and the end of the other U-shaped arm (2), and the two adjacent connecting arms (3) and the connecting arm (3) and the U-shaped arm (2) are connected by a first rotating member. The folding net comprises a pair of first filter nets (4) fixedly connected to the two U-shaped arms (2) and at least one second filter net (5) assembled on two opposite connecting arms (3), and the two adjacent second filter nets (5) and the first filter net (4) and the adjacent second filter net (5) are connected by a second rotating member. One end of the telescopic frame (1) is hinged to one of the U-shaped arms (2), and the telescopic frame (1) is connected to at least one limiting rope (6) connected to the U-shaped arm (2). A locking mechanism is provided between the two adjacent connecting arms (3) and between the U-shaped arm (2) and the adjacent connecting arm (3).

2. A portable sand screening device according to claim 1, characterized in that: The first rotating member comprises a pair of parallel rotating shafts (7) and rotating arms (8) axially connected to the pair of rotating shafts (7), wherein one rotating shaft (7) is axially connected to the end of the connecting arm (3), and the other rotating shaft (7) is axially connected to the end of the corresponding connecting arm (3) or the U-shaped arm (2).

3. A portable sand screening device according to claim 2, characterized in that: The second rotating member comprises a pair of connecting plates (9) and a transition plate (11) located between the pair of connecting plates (9) and having two opposite sides hinged to the corresponding connecting plates (9) via hinge shafts (10), wherein one connecting plate (9) is fixedly connected to the edge of the second filter screen (5), and the other connecting plate (9) is fixedly connected to the edge of the corresponding second filter screen (5) or the first filter screen (4), and the pair of hinge shafts (10) are respectively arranged coaxially with the corresponding rotating shafts (7).

4. A portable sand screening device according to claim 3, characterized in that: The two ends of the hinge shaft (10) are respectively assembled on the two ends of the U-shaped arm (2) or on the ends of two opposite connecting arms (3).

5. The portable sand screening device according to claim 4, characterized in that: The locking mechanism comprises a sliding arm (12) and a handle (13) fixedly connected to the sliding arm (12); the sliding arm (12) is slidably arranged in the connecting arm (3) or the U-shaped arm (2); the connecting arm (3) and the U-shaped arm (2) are both provided with a strip-shaped through slot (14) for the corresponding handle (13) to pass through; the sliding arm (12) can slide away from the hinge of the telescopic frame (1) to be inserted into the adjacent connecting arm (3) or the U-shaped arm (2).

6. The portable sand screening device according to claim 5, characterized in that: The sliding arm (12) is provided with a recessed groove for avoiding the end of the hinge shaft (10).

7. The portable sand screening device according to claim 1, characterized in that: The end of the telescopic frame (1) away from the hinge is equipped with a supporting foot (15).

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