Cross beam structure and flip-flow screen

Abstract

The utility model belongs to the technical field of screening mechanical equipment, and particularly relates to a cross beam structure and a flip-flow screen, the flip-flow screen comprises a screen surface and the cross beam structure, specifically, the cross beam structure comprises a cross beam pipe body, the two ends of the cross beam pipe body are fixedly connected with connecting pieces, the cross beam pipe body is composed of a first sheet metal part, a second sheet metal part, a plurality of studs and two reinforcing parts, wherein the first sheet metal part and the second sheet metal part are fixedly connected between the two connecting pieces, the first sheet metal part and the second sheet metal part are oppositely arranged, a cavity is formed between the first sheet metal part and the second sheet metal part, and gaps are reserved in the upper contact ends and the lower contact ends of the first sheet metal part and the second sheet metal part; the studs are inserted into the cavity in a penetrating mode through gaps reserved in the upper and lower contact ends of the first sheet metal part and the second sheet metal part, one end of each stud extends out of the lower end of the cavity and is fixedly connected with a limiting block, and the other end of each stud extends out of the upper end of the cavity and is connected with a positioning assembly; the opposite side walls of the first sheet metal part and the second sheet metal part are each fixedly connected with a reinforcing part. The device can effectively improve the overall bending strength of the cross beam in the application of the flip-flow screen, reduce the damage rate and prolong the service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of screening mechanical equipment, and in particular relates to a crossbeam structure and a relaxation screen. Background Art

[0002] Screening machinery is a kind of equipment that classifies materials according to their particle size. Since moist fine-grained materials tend to stick together and clog the screen holes, screening them with ordinary rigid screen machines often results in reduced processing capacity and screening efficiency.

[0003] The flap screen uses a flexible polyurethane screen surface. During the operation of the screen machine, this type of screen surface can break up the materials that stick to each other and stratify the materials to prepare for the material to pass through the screen. When the material sticks to the screen surface and blocks the screen holes, the highly elastic polyurethane screen surface can instantly bounce the material and clean the screen surface. Therefore, the flap screen can well solve the problem of deep screening of moist fine-grained materials.

[0004] The existing relaxation screen has a screen surface fixed on the crossbeam, and the crossbeam drives the screen surface to do relaxation movement for screening, so the crossbeam is an important part of the relaxation screen. The crossbeam used in the existing relaxation screen is generally a hollow tubular structure. The relaxation screen crossbeam is tapped on the crossbeam tube body, and the screen surface fixing bolts are directly screwed into the crossbeam to fix the screen surface. Since the screen surface fixing bolts are in contact with the screened material, they are vulnerable parts. Since the relaxation screen has a high vibration frequency and a large amplitude, the method of screwing the bolts directly into the crossbeam weakens the bending strength of the crossbeam. The crossbeam is easily broken and damaged due to the low bending strength, which affects the service life. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the purpose of the utility model is to provide a beam structure and a relaxation screen, which can effectively improve the overall bending strength of the beam, reduce the damage rate, and extend the service life.

[0006] The technical solution of the utility model is:

[0007] A crossbeam structure, comprising a crossbeam tube body, both ends of which are fixedly connected to connecting pieces, and the crossbeam tube body comprises:

[0008] A first sheet metal part and a second sheet metal part are fixedly connected between the two connecting parts, the first sheet metal part and the second sheet metal part are arranged opposite to each other and a cavity is formed therebetween, and gaps are reserved at upper and lower contact ends of the first sheet metal part and the second sheet metal part;

[0009] A plurality of studs are evenly distributed between the two connecting members, and the studs are inserted into the cavity through the gaps reserved between the upper and lower contact ends of the first sheet metal member and the second sheet metal member, one end of the stud extends out of the lower end of the cavity and is fixedly connected to the limiting block, and the other end extends out of the upper end of the cavity and is connected to the positioning assembly, and the positioning assembly is used to cooperate with the limiting block to ensure the stability of the stud;

[0010] Two reinforcing parts are arranged on both sides of the stud and located in the cavity, one of the reinforcing parts is fixedly connected to the first sheet metal part, and the other reinforcing part is fixedly connected to the second sheet metal part, and the reinforcing parts are used to increase the bending strength of the first sheet metal part or the second sheet metal part.

[0011] Preferably, the first sheet metal part is a U-shaped plate body, the first sheet metal part has an inclined main board body, one end of the main board body is fixedly connected to the first side panel, and the other end is fixedly connected to the second side panel, the first side panel is parallel to the second side panel and both are arranged at an angle with the main board body, the length of the first side panel is less than the length of the second side panel, and the angle between the main board body and the first side panel and the second side panel is an arc transition, the second sheet metal part has the same structure as the first sheet metal part and is symmetrically arranged, the cross-section of the cavity formed by the first sheet metal part and the second sheet metal part is an isosceles trapezoid, and the positioning component is located on the side of the cavity close to the first side panel.

[0012] Preferably, the angle between the two main boards in the first sheet metal component and the second sheet metal component is between 20° and 28°.

[0013] Preferably, the two reserved gaps at the upper and lower contact ends of the first sheet metal part and the second sheet metal part are arranged opposite to each other.

[0014] Preferably, the reinforcement portion includes at least one reinforcement rib, which is formed by two vertically arranged plates fixedly connected, a side wall of the reinforcement rib is arranged to fit the main board of the first sheet metal part or the second sheet metal part, and the main board and the reinforcement rib are fixed by multiple bolts and nuts.

[0015] Preferably, the positioning assembly includes a limit plate, which is arranged vertically with the stud, and the length of the limit plate is the same as the spacing between the two connecting parts, the limit plate is fitted with the outer wall of the first side plate, and a plurality of screw holes are opened on the limit plate, and the plurality of screw holes correspond to the studs one by one, the studs are screwed with the corresponding screw holes, and the studs extend through the screw holes to the side of the limit plate away from the first side plate.

[0016] Preferably, the side wall edges of the limiting plate facing away from the first side plate are all provided with protrusions.

[0017] A loose-fitting screen comprises any one of the above-mentioned beam structures, wherein the loose-fitting screen has a screen surface, the screen surface is arranged on a side of the beam structure close to a positioning assembly, and the screen surface is connected to the studs through a pressure strip and a fixing nut, and the protrusion on the first side panel is embedded in the screen surface.

[0018] Compared with the prior art, the beam structure and the relaxation screen of the utility model have the following beneficial effects:

[0019] 1. The device uses a beam body with a cavity formed by combining the first sheet metal part and the second sheet metal part to replace the traditional tubular beam, and then the gaps reserved between the first sheet metal part and the second sheet metal part at the upper and lower ends of the cavity can facilitate the installation of the studs, without tapping holes on the beam, thereby ensuring the inherent strength of the first sheet metal part and the second sheet metal part. At the same time, the studs are limited between the first sheet metal part and the second sheet metal part by the cooperation of the limit block and the positioning assembly, so that the studs exert a smaller force on the first sheet metal part and the second sheet metal part after being stressed, thereby enhancing the overall bending strength of the beam, and then adding reinforcement parts to the inner side walls of the first sheet metal part and the second sheet metal part to increase the thickness of the first sheet metal part and the second sheet metal part, further enhancing the bending strength of the beam, so that the service life of the beam can be effectively extended during the use of the relaxation screen;

[0020] 2. The device forms an intermediate cavity by combining the first sheet metal part and the second sheet metal part. When the stud is broken or damaged, the damaged and broken stud can be quickly taken out from under the beam for convenient replacement, making maintenance more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the crossbeam structure in the embodiment of the utility model;

[0022] Figure 2 It is a longitudinal section schematic diagram of the crossbeam structure in the embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the combined structure of the first sheet metal component and the second sheet metal component in an embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the limit plate in the embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the longitudinal section structure of the limiting plate in the embodiment of the utility model;

[0026] Figure 6 It is a schematic diagram of the application of the crossbeam structure in the embodiment of the utility model in the relaxation screen.

[0027] Description of reference numerals:

[0028] 1. Beam body; 101. First sheet metal part; 1011. Main board body; 1012. First side plate; 1013. Second side plate; 102. Second sheet metal part; 103. Gap; 104. Cavity; 2. Connector; 3. Reinforcement part; 4. Limiting plate; 5. Stud; 6. Bolt; 7. Screen surface; 8. Pressure strip; 9. Fixing nut; 10. Screening material. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0031] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] See also Figures 1 to 3As shown, in order to effectively improve the overall bending strength of the beam, reduce the damage rate, and extend the service life of the beam during the application of the relaxation screen. This embodiment provides a beam structure and a relaxation screen. Specifically, the beam structure includes a beam tube body 1, and both ends of the beam tube body 1 are fixedly connected to the connecting parts 2. The beam tube body 1 is composed of a first sheet metal part 101, a second sheet metal part 102, a plurality of studs 5 and two reinforcement parts 3, wherein the first sheet metal part 101 and the second sheet metal part 102 are fixedly connected between the two connecting parts 2. Preferably, the connecting part 2 adopts a flange, and the two ends of the first sheet metal part 101 and the second sheet metal part 102 are respectively welded and fixed to the flange, the first sheet metal part 101 and the second sheet metal part 102 are arranged opposite to each other and a cavity 104 is formed therebetween, and the upper and lower contact ends of the first sheet metal part 101 and the second sheet metal part 102 are both reserved with gaps 103; A plurality of studs 5 are evenly distributed between the two connecting members 2, and the studs 5 are inserted into the cavity 104 through the gap 103 reserved by the upper and lower contact ends of the first sheet metal 101 and the second sheet metal 102. One end of the stud 5 extends out of the lower end of the cavity 104 and is fixedly connected to the limiting block, and the other end extends out of the upper end of the cavity 104 and is connected to the positioning component, and the positioning component is used to cooperate with the limiting block to ensure the stability of the stud 5; and then two reinforcing parts 3 are arranged on both sides of the stud 5 and located in the cavity 104, and one of the reinforcing parts 3 is fixedly connected to the first sheet metal 101, and the other reinforcing part 3 is fixedly connected to the second sheet metal 102. The arrangement of the reinforcing part 3 can increase the bending strength of the first sheet metal 101 and the second sheet metal 102.

[0033] See also Figure 2 and Figure 3 As shown, further, in order to enhance the bending resistance of the crossbeam, the first sheet metal part 101 is a U-shaped plate body, the first sheet metal part 101 has an inclined main board body, one end of the main board body is fixedly connected to the first side plate 1012, and the other end is fixedly connected to the second side plate 1013, the first side plate 1012 is parallel to the second side plate 1013 and both are set with an angle between the main board body, the length of the first side plate 1012 is less than the length of the second side plate 1013, and the angle between the main board body and the first side plate 1012 and the second side plate 1013 is an arc transition, the second sheet metal part 102 has the same structure as the first sheet metal part 101 and is symmetrically arranged, the cross-section of the cavity 104 formed by the first sheet metal part 101 and the second sheet metal part 102 is an isosceles trapezoid, and the angle between the two main boards in the first sheet metal part 101 and the second sheet metal part 102, that is, the angle between the extension lines of the two waists of the above-mentioned isosceles trapezoid is between 20°-28°.

[0034] See also Figure 2 and Figure 3As shown, in order to ensure the bending strength of the cross beam tube body 1, two gaps 103 reserved at the upper and lower contact ends of the first sheet metal part 101 and the second sheet metal part 102 are arranged opposite to each other, so that the stud 5 can be in a vertical working state.

[0035] See also Figure 1 and Figure 2 As shown, in order to improve the bending strength of the crossbeam tube body 1, each reinforcement portion 3 includes at least one reinforcement rib, and the reinforcement rib is formed by two vertically arranged plates fixedly connected. Preferably, the reinforcement rib is made of angle steel, and one side wall of the reinforcement rib is fitted with the main board of the first sheet metal part 101 or the second sheet metal part 102, and the main board and the reinforcement rib are fixed by multiple bolts 6 and nuts.

[0036] See also Figure 2 and Figure 4 As shown, further, in order to ensure the stability of the stud 5, reduce the shaking of the stud 5 during use, and improve the protection of the stud 5, the positioning assembly includes a limit plate 4, preferably the limit plate 4 is made of steel plate, the limit plate 4 and the stud 5 are vertically arranged, and the length of the limit plate 4 is the same as the spacing between the two connecting parts 2, the limit plate 4 is fitted with the outer wall of the first side plate 1012, and a plurality of screw holes are opened on the limit plate 4, and the plurality of screw holes correspond to the stud 5 one by one, the stud 5 is screwed to the corresponding screw holes, and the stud 5 extends through the screw holes to the side of the limit plate 4 away from the first side plate 1012.

[0037] See also Figures 1 to 6 As shown, specifically, when in use, the flap screen includes the above-mentioned beam structure, the screen surface 7 of the flap screen is arranged on the side of the beam structure close to the positioning component, and the screen surface 7 is connected to the stud 5 through a pressure strip and a fixing nut, and the screened material 10 is added from the screen surface 7. The beam body with the cavity 104 formed by the combination of the first sheet metal part 101 and the second sheet metal part 102 replaces the traditional tubular beam, and the gaps reserved at the upper and lower ends of the cavity 104 between the first sheet metal part 101 and the second sheet metal part 102 can facilitate the installation of the stud 5, without tapping holes on the beam, thereby ensuring the inherent strength of the first sheet metal part 101 and the second sheet metal part 102. At the same time, the stud 5 is limited between the first sheet metal part 101 and the second sheet metal part 102 by the cooperation of the limit block and the positioning assembly, so that the stud 5 generates a smaller force on the first sheet metal part 101 and the second sheet metal part 102 after being stressed, thereby enhancing the overall bending strength of the beam, and then adding a reinforcement part 3 on the inner side walls of the first sheet metal part 101 and the second sheet metal part 102 to increase the thickness of the first sheet metal part 101 and the second sheet metal part 102, further enhancing the bending strength of the beam, so that the service life of the beam can be effectively extended during the use of the relaxation screen.

[0038] See also Figure 5As shown, further, the side wall edges of the limiting plate 4 facing away from the first side plate 1012 are provided with protrusions. After the crossbeam structure is installed and connected to the screen surface 7, since the screen plate is made of soft polyurethane material, the protrusions on the first side plate 1012 will be embedded in the screen surface 7, which can effectively prevent the screen surface 7 from slipping and sliding, and the screening effect is better.

[0039] like Figure 2 and Figure 6 As shown, in addition, when the relaxation screen is in use, the screen surface 7 is installed on one side of the positioning assembly, that is, the screen surface 7 is fixed to the limiting plate 4. In this way, by utilizing the two inclined main board bodies of the first sheet metal 101 and the second sheet metal 102, the screened material can quickly pass through the beam and enter the chute under the screen. At the same time, the angle between the two main board bodies is limited between 20° and 28°, which can reduce the accumulation of materials on the beam tube body 1 and facilitate the screening of materials.

[0040] In addition, in the use of traditional pipe body crossbeams, when the bolts connected to the screen surface 7 are damaged, it is easy to cause the thread failure or bolt breakage on the crossbeam, and the broken bolts enter the pipe body, making it difficult to remove them. However, the present device forms an intermediate cavity 104 through the combination of the first sheet metal part 101 and the second sheet metal part 102. When the stud 5 is broken or damaged, the damaged and broken stud 5 can be quickly taken out from under the crossbeam for easy replacement, making maintenance more convenient and quick.

[0041] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A crossbeam structure, comprising a crossbeam tube (1), both ends of the crossbeam tube (1) being fixedly connected with connecting pieces (2), characterized in that: The crossbeam tube body (1) comprises: A first sheet metal part (101) and a second sheet metal part (102) are fixedly connected between the two connecting parts (2); the first sheet metal part (101) and the second sheet metal part (102) are arranged opposite to each other and a cavity (104) is formed therebetween; and gaps (103) are reserved at upper and lower contact ends of the first sheet metal part (101) and the second sheet metal part (102); A plurality of studs (5) are evenly distributed between the two connecting members (2); the studs (5) are inserted into the cavity (104) through gaps (103) reserved between the upper and lower contact ends of the first sheet metal member (101) and the second sheet metal member (102); one end of the stud (5) extends out of the lower end of the cavity (104) and is fixedly connected to a limiting block, while the other end extends out of the upper end of the cavity (104) and is connected to a positioning component; the positioning component is used to cooperate with the limiting block to ensure the stability of the stud (5); Two reinforcing parts (3) are arranged on both sides of the stud (5) and are located in the cavity (104), one of the reinforcing parts (3) is fixedly connected to the first sheet metal part (101), and the other reinforcing part (3) is fixedly connected to the second sheet metal part (102), and the reinforcing parts (3) are used to increase the bending strength of the first sheet metal part (101) or the second sheet metal part (102).

2. A beam structure according to claim 1, characterized in that: The first sheet metal part (101) is a U-shaped plate body, the first sheet metal part (101) has an inclined main plate body, one end of the main plate body is fixedly connected to a first side plate (1012), and the other end is fixedly connected to a second side plate (1013), the first side plate (1012) and the second side plate (1013) are parallel, and both are arranged at an angle with the main plate body, the length of the first side plate (1012) is less than the length of the second side plate (1013), and the angles between the main plate body and the first side plate (1012) and the second side plate (1013) are in the form of arc transitions, the second sheet metal part (102) and the first sheet metal part (101) have the same structure and are symmetrically arranged, the cross section of the cavity (104) formed by the first sheet metal part (101) and the second sheet metal part (102) is an isosceles trapezoid, and the positioning component is located on a side of the cavity (104) close to the first side plate (1012).

3. A beam structure according to claim 2, characterized in that: The included angle between the two main plate bodies in the first sheet metal part (101) and the second sheet metal part (102) is between 20° and 28°.

4. A beam structure according to claim 2, characterized in that: The two reserved gaps (103) at the upper and lower contact ends of the first sheet metal part (101) and the second sheet metal part (102) are arranged opposite to each other.

5. A beam structure according to claim 2, characterized in that: The reinforcing portion (3) comprises at least one reinforcing rib, the reinforcing rib being formed by two vertically arranged plate bodies being fixedly connected, a side wall of the reinforcing rib being arranged in close contact with a main plate body of the first sheet metal component (101) or the second sheet metal component (102), and the main plate body and the reinforcing rib being fixed by a plurality of bolts (6) and nuts.

6. A beam structure according to claim 2, characterized in that: The positioning assembly comprises a limit plate (4), the limit plate (4) and the stud (5) are arranged vertically, and the length of the limit plate (4) is the same as the spacing between the two connecting members (2), the limit plate (4) is in contact with the outer wall of the first side plate (1012), a plurality of screw holes are provided on the limit plate (4), the plurality of screw holes correspond to the studs (5) one by one, the studs (5) are screwed to the corresponding screw holes, and the studs (5) extend through the screw holes to the side of the limit plate (4) away from the first side plate (1012).

7. A beam structure according to claim 6, characterized in that: The side wall edges of the limiting plate (4) facing away from the first side plate (1012) are all provided with protrusions.

8. A relaxation screen, comprising a beam structure as claimed in any one of claims 2 to 7, characterized in that: The relaxation screen has a screen surface (7), and the screen surface (7) is arranged on a side of the beam structure close to the positioning component. The screen surface (7) is connected to the stud (5) through a pressure strip (8) and a fixing nut (9), and the protrusion on the first side plate (1012) is embedded in the screen surface.

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