Cross beam assembly and rice sieve

Abstract

The utility model relates to the technical field of cross beams of rice sieves, and discloses a cross beam assembly and a rice sieve, the cross beam assembly comprises a cross beam and at least one screw rod, the cross beam is hollow, the cross beam is provided with at least one installation structure, and the installation structure comprises a sliding groove and a clamping groove which are communicated; the screw can be inserted into the sliding groove, can be clamped in the clamping groove in a sliding mode through the sliding groove, and can be connected with the clamping groove in a clamped mode so as to limit rotation of the screw relative to the cross beam. The weight of the cross beam can be reduced, and the screw cannot rotate relative to the cross beam when the screw is connected with the cross beam.

Description

Technical Field

[0001] The utility model relates to the technical field of rice sieve crossbeams, and particularly relates to a crossbeam assembly and a rice sieve. Background Art

[0002] In a rice polishing machine and a rice milling machine, the rice is polished or milled by a rotating roller in a sieve assembly. In the sieve assembly, there are two crossbeams, two sieve frames and a plurality of sieves. The two crossbeams are arranged at intervals up and down. The two sieve frames are arranged on both sides of the crossbeams. The crossbeams are respectively connected to the two crossbeams through screws and nuts. The plurality of sieves are respectively connected to the two sieve frames.

[0003] Publication No. CN203170368U discloses a rice milling chamber of a rice milling machine, which includes a main shaft. The main shaft is a hollow tubular structure with ventilation holes on the main shaft. A sand roller is sleeved outside the main shaft. There are ventilation grooves on the sand roller. There are crossbeams above and below the sand roller. There are two left and right sieve plates fixed on the sieve frames. The two ends of the sieve frames are fixed on the crossbeams through fixing bolts. There are spiral grooves on the sand roller. The spiral grooves on the sand roller are of an equal depth and equal width structure.

[0004] In the above rice milling machine, the screw is threadedly connected to the crossbeam. The sieve frame is sleeved on the screw and fixed to the crossbeam through a nut. Among them, the crossbeam adopts a solid structure. The solid crossbeam has a high cost and a heavy weight, and is not convenient for installation. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the above technical deficiencies, and provide a crossbeam assembly and a rice sieve to solve the technical problem that the crossbeam in the prior art adopts a solid structure, resulting in a heavy weight and being not convenient for installation.

[0006] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] In a first aspect, the utility model provides a crossbeam assembly, including:

[0008] A crossbeam, the inside of the crossbeam is hollow, and the crossbeam is provided with at least one installation structure. The installation structure includes a sliding groove and a clamping groove that are communicated with each other; and

[0009] At least one screw, the screw can be inserted into the sliding groove and can be slidably clamped in the clamping groove through the sliding groove. The screw can be clamped with the clamping groove to limit the relative rotation of the screw with respect to the crossbeam.

[0010] In one of the embodiments, the screw includes a first threaded portion, a clamping portion and a second threaded portion that are connected in sequence. The outer diameters of the first threaded portion, the clamping portion and the second threaded portion are smaller than the inner diameter of the sliding groove. The clamping portion can be slidably inserted into the clamping groove from the sliding groove and clamped with the clamping groove.

[0011] In one embodiment, the peripheral wall of the clamping portion has a first plane and a second plane that are parallel to each other. The first plane and the second plane are disposed on both sides of the clamping portion, and the first plane and the second plane are in contact with the inner wall of the card slot.

[0012] In one embodiment, the peripheral wall of the clamping portion further includes a first arc surface and a second arc surface. The first arc surface, the first plane, the second arc surface, and the second plane are sequentially connected end to end. The first arc surface and the second arc surface are coaxial with the first threaded portion and the second threaded portion, respectively. The shape of the inner wall of the card slot is matched with the shape formed by the combination of the first plane, the second arc surface, and the second plane.

[0013] In one embodiment, when the clamping portion is clamped in the card slot, the first threaded portion and the second threaded portion are located on both sides of the cross beam, and can limit the movement of the clamping portion in a direction perpendicular to the cross beam.

[0014] In one embodiment, the radial cross-sectional dimension of the first threaded portion and the second threaded portion is greater than the radial cross-sectional dimension of the card slot.

[0015] In one embodiment, the cross beam is a square tube.

[0016] In one embodiment, the cross beam assembly further includes two receiving plugs. The two receiving plugs are respectively disposed at both ends of the cross beam and are both connected to the cross beam.

[0017] In one embodiment, both ends of the cross beam are open;

[0018] A plugging portion is formed on the side of the receiving plug facing the cross beam, and the plugging portion is cooperatively plugged into the cross beam.

[0019] In a second aspect, the present invention further provides a rice sieve, including the above-mentioned cross beam assembly.

[0020] Compared with the prior art, for the cross beam assembly provided by the present invention, the cross beam adopts a hollow structure, which can greatly reduce the weight of the cross beam and avoid the problem of heavy weight during the installation of the cross beam. After the cross beam adopts a hollow structure, it is not easy to machine a threaded hole on the cross beam. Therefore, the present invention further provides an installation structure. When it is necessary to install the screw on the cross beam, first insert the screw into the chute, and then slide it into the card slot through the chute, and make the screw be clamped with the card slot. At this time, the screw cannot rotate relative to the cross beam. When installing a nut on the screw, rotate the nut, and the screw will not rotate relative to the cross beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a schematic structural diagram of a crossbeam assembly provided by an embodiment of the present utility model;

[0022] Figure 2 It is the present utility model Figure 1 A partial enlarged schematic view at position A in it;

[0023] Figure 3 It is a partial structural schematic diagram of the crossbeam in the crossbeam assembly provided by an embodiment of the present utility model;

[0024] Figure 4 It is a schematic structural diagram of the screw rod in the crossbeam assembly provided by an embodiment of the present utility model;

[0025] Figure 5 It is a schematic structural diagram of the screw rod in the crossbeam assembly provided by an embodiment of the present utility model;

[0026] Figure 6 It is a cross-sectional view along the Figure 5 B - B line in it;

[0027] Figure 7 It is a partial structural schematic diagram of the crossbeam and a partial structural schematic diagram of the socket joint in the crossbeam assembly provided by an embodiment of the present utility model.

[0028] Explanation of reference numerals:

[0029] Crossbeam 1;

[0030] Chute 1a;

[0031] Card slot 1b;

[0032] Screw rod 2;

[0033] First thread portion 21;

[0034] Clamping portion 22;

[0035] Second thread portion 23;

[0036] First plane 22a;

[0037] Second plane 22b;

[0038] First arc surface 22c;

[0039] Second arc surface 22d;

[0040] Receiving plug 3;

[0041] Insertion portion 31. Detailed implementation manners

[0042] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0043] In order to solve the technical problem that the cross beam has a heavy weight due to its solid structure, the present utility model provides a cross beam assembly and a rice sieve, which can solve the technical problem of inconvenient installation caused by the heavy weight of the cross beam.

[0044] It should be noted that the cross beam assembly described in the present utility model is used for but not limited to rice sieves, etc. For the convenience of description, in the present utility model, only the case where the cross beam assembly is applied to a rice sieve is taken as an example for description, and the principle of the cross beam assembly applied to other types of equipment is substantially the same as that applied to a rice sieve, and will not be elaborated one by one here.

[0045] Please refer to Figure 1 and Figure 2 , the present utility model provides a cross beam assembly, including a cross beam 1 and at least one screw 2. The inside of the cross beam 1 is hollow, and the cross beam 1 is provided with at least one installation structure. The installation structure includes a sliding groove 1a and a clamping groove 1b that are connected and communicated; the screw 2 can be inserted into the sliding groove 1a and can be slidably clamped in the clamping groove 1b through the sliding groove 1a. The screw 2 can be clamped with the clamping groove 1b to limit the relative rotation of the screw 2 with respect to the cross beam 1.

[0046] Specifically, the cross beam 1 adopts a hollow structure, which can greatly reduce the weight of the cross beam 1 and avoid the problem of heavy weight during the installation of the cross beam 1. After the cross beam 1 adopts a hollow structure, it is not easy to machine threaded holes on the cross beam 1. For this reason, the present utility model further sets an installation structure. When it is necessary to realize the installation of the screw 2 and the cross beam 1, first insert the screw 2 into the sliding groove 1a, and then slidably insert it into the clamping groove 1b through the sliding groove 1a, and make the screw 2 clamped with the clamping groove 1b. At this time, the screw 2 cannot rotate relative to the cross beam 1. When installing a nut on the screw 2, rotate the nut, and the screw 2 will not rotate relative to the cross beam 1.

[0047] It should be understood that a clamping structure can be additionally added to the screw 2 so that the clamping structure is clamped with the clamping groove 1b, or the screw 2 itself can be processed so that the cross section of the screw 2 is polygonal to realize the clamping of the screw 2 and the clamping groove 1b. As Figure 2 , Figure 4 and Figure 5 shown, in one of the embodiments, the screw 2 includes a first threaded portion 21, a clamping portion 22 and a second threaded portion 23 connected in sequence. The outer diameters of the first threaded portion 21, the clamping portion 22 and the second threaded portion 23 are smaller than the inner diameter of the sliding groove 1a. The clamping portion 22 can be slidably inserted into the clamping groove 1b from the sliding groove 1a and clamped with the clamping groove 1b.

[0048] It should be understood that the number of mounting structures and the screw 2 can be one, two or more. In one embodiment, the number of mounting structures and the screw 2 is multiple and they correspond to each other one by one.

[0049] It should be understood that the chute 1a and the clamping groove 1b can be inclined relative to the cross beam 1 or perpendicular to the cross beam 1.

[0050] It should be understood that the first thread portion 21 and the second thread portion 23 can be stud bolts, threaded rods, etc.

[0051] When it is necessary to realize the clamping connection between the screw 2 and the clamping groove 1b, insert the first thread portion 21, the clamping portion 22 and the second thread portion 23 into the chute 1a, and then slide the first thread portion 21, the clamping portion 22 and the second thread portion 23, so that the clamping portion 22 slides and is inserted into the clamping groove 1b, and the clamping portion 22 is clamped in the clamping groove 1b, realizing the clamping connection between the screw 2 and the clamping groove 1b to restrict the rotation of the screw 2 relative to the cross beam 1.

[0052] It should be understood that the screw 2 and the clamping groove 1b can be clamped by matching the clamping groove 1b with a flat clamping block, or a part of the screw 2 can be set to be flat so that the flat part is clamped with the clamping groove 1b. As Figure 6 shown, in one embodiment, the peripheral wall of the clamping portion 22 has a first plane 22a and a second plane 22b that are parallel to each other. The first plane 22a and the second plane 22b are arranged on both sides of the clamping portion 22, and the first plane 22a and the second plane 22b are attached to the inner wall of the clamping groove 1b.

[0053] It should be understood that the first thread portion 21 and the second thread portion 23 are arranged on both sides of the cross beam 1 and are used to connect with the sieve frames on both sides of the cross beam 1.

[0054] In this embodiment, by providing the first plane 22a and the second plane 22b that are parallel to each other on the clamping portion 22, through the cooperation of the first plane 22a, the second plane 22b and the inner wall of the clamping groove 1b, the clamping connection between the clamping portion 22 and the clamping groove 1b is realized, and the rotation of the clamping portion 22 relative to the cross beam 1 can be restricted.

[0055] As Figure 6 shown, in one embodiment, the peripheral wall of the clamping portion 22 further includes a first arc surface 22c and a second arc surface 22d. The first arc surface 22c, the first plane 22a, the second arc surface 22d and the second plane 22b are connected end to end in sequence. The first arc surface 22c and the second arc surface 22d are coaxial with the first thread portion 21 and the second thread portion 23, and the shape of the inner wall of the clamping groove 1b is matched with the shape formed by the combination of the first plane 22a, the second arc surface 22d and the second plane 22b.

[0056] With the above settings, when it is necessary to process and form the clamping portion 22, the first plane 22a and the second plane 22b can be formed on the screw rod 2 by trimming, so that the clamping portion 22 can be processed on the screw rod 2, which is convenient for processing and can realize the clamping of the clamping portion 22 and the clamping groove 1b.

[0057] As Figure 2 shown, in one of the embodiments, when the clamping portion 22 is clamped in the clamping groove 1b, the first threaded portion 21 and the second threaded portion 23 are located on both sides of the cross beam 1 and can limit the movement of the clamping portion 22 in the direction perpendicular to the cross beam 1.

[0058] With the above settings, the first threaded portion 21 and the second threaded portion 23 can limit the movement of the clamping portion 22 in the direction perpendicular to the cross beam 1, and can limit the movement of the screw rod 2 in the direction perpendicular to the cross beam 1. When the nut is threadedly connected to the first threaded portion 21 or the second threaded portion 23, the abutment of the first threaded portion 21 and the second threaded portion 23 against the cross beam 1 can prevent the screw rod 2 from moving relative to the cross beam 1.

[0059] It should be understood that the movement of the first threaded portion 21 and the second threaded portion 23 in the direction perpendicular to the cross beam 1 can be limited by providing limit pins or limit shafts on the first threaded portion 21 and the second threaded portion 23. In one of the embodiments, the radial cross-sectional dimension of the first threaded portion 21 is larger than the radial cross-sectional dimension of the clamping groove 1b.

[0060] By making the radial cross-sectional dimensions of the first threaded portion 21 and the second threaded portion 23 larger than the radial cross-sectional dimension of the clamping groove 1b, the first threaded portion 21 and the second threaded portion 23 cannot slide axially into the clamping groove 1b, realizing the limit of the screw rod 2 in the direction perpendicular to the cross beam 1.

[0061] It should be understood that the cross beam 1 can be a pipe body of various shapes. In one of the embodiments, the cross beam 1 is a square pipe.

[0062] By setting the cross beam 1 as a square pipe, the square pipe is a standard part and can be obtained by purchase at a low price. Secondly, the side surface of the sieve frame can be fitted with the sieve frame.

[0063] As Figure 1 shown, in one of the embodiments, the cross beam assembly further includes two receiving plugs 3, and the two receiving plugs 3 are respectively arranged at both ends of the cross beam 1 and are both connected to the cross beam 1.

[0064] By providing two receiving plugs 3, the two receiving plugs 3 connect the cross beam 1, and the cross beam 1 can be fixed to the frame of the rice polishing machine.

[0065] It should be understood that the connection between the receiving plug 3 and the cross beam 1 can be realized by welding, bonding, bolts, etc., such as Figure 7As shown, in one of the embodiments, both ends of the crossbeam 1 are open; a plug-in portion 31 is formed on one side of the receiving plug 3 facing the crossbeam 1, and the plug-in portion 31 is fitted and inserted into the crossbeam 1.

[0066] When it is necessary to connect the receiving plug 3 to the crossbeam 1, the plug-in portion 31 can be fitted and inserted into the crossbeam 1, which is convenient for installation.

[0067] The present utility model also relates to a rice sieve, including the above-mentioned crossbeam assembly.

[0068] The specific embodiments of the present utility model described above do not constitute a limitation on the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model should be included in the protection scope of the claims of the present utility model.

Claims

1. A beam assembly, characterized in that: include: A crossbeam, wherein the interior of the crossbeam is hollow and the crossbeam is provided with at least one mounting structure, wherein the mounting structure comprises a sliding groove and a clamping groove that are connected to each other; and At least one screw rod, the screw rod can be inserted into the slide groove, and can be slidably clamped in the clamping groove through the slide groove, and the screw rod can be clamped with the clamping groove to limit the rotation of the screw rod relative to the crossbeam.

2. The crossbeam assembly according to claim 1, characterized in that: The screw rod includes a first threaded portion, a clamping portion and a second threaded portion which are connected in sequence. The outer diameters of the first threaded portion, the clamping portion and the second threaded portion are smaller than the inner diameter of the slide groove. The clamping portion can be slidably inserted into the clamping groove from the slide groove and clamped with the clamping groove.

3. The crossbeam assembly according to claim 2, characterized in that: The peripheral wall of the clamping portion has a first plane and a second plane parallel to each other, the first plane and the second plane are arranged on both sides of the clamping portion, and the first plane and the second plane are in contact with the inner wall of the clamping slot.

4. The crossbeam assembly according to claim 3, characterized in that: The peripheral wall of the clamping portion also includes a first arc surface and a second arc surface. The first arc surface, the first plane, the second arc surface and the second plane are connected end to end in sequence. The first arc surface and the second arc surface are coaxially arranged with the first threaded portion and the second threaded portion. The shape of the inner wall of the clamping groove matches the shape formed by the combination of the first plane, the second arc surface and the second plane.

5. The crossbeam assembly according to claim 2, characterized in that: When the clamping portion is clamped in the clamping slot, the first threaded portion and the second threaded portion are located on both sides of the crossbeam and can limit the clamping portion from moving in a direction perpendicular to the crossbeam.

6. The crossbeam assembly according to claim 5, characterized in that: The radial cross-sectional dimensions of the first threaded portion and the second threaded portion are larger than the radial cross-sectional dimensions of the slot.

7. The crossbeam assembly according to claim 1, characterized in that: The crossbeam is a square tube.

8. The crossbeam assembly according to claim 1, characterized in that: It also includes two socket plugs, which are respectively arranged at two ends of the crossbeam and are both connected to the crossbeam.

9. The crossbeam assembly according to claim 8, characterized in that: Both ends of the crossbeam are open; A plug-in portion is formed on one side of the socket plug facing the crossbeam, and the plug-in portion is plugged into the crossbeam.

10. A rice sieve, characterized in that: Comprising a crossbeam assembly as described in any one of claims 1-9.

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