Bar and bar screen

Abstract

The utility model provides a bar and a bar screen, relates to the technical field of screening equipment, and adopts the technical scheme that the bar comprises a bar body, the outer surface of the bar body is provided with four planes, namely an upper plane, a lower plane, a left plane and a right plane, the upper plane and the lower plane are oppositely arranged, the left plane and the right plane are oppositely arranged, and the bar screen is arranged on the bar body. And grooves are formed in the left plane and the right plane. The bar screen comprises the bar and further comprises a support, a square sleeve is fixed to the support, the square connector is clamped into the square sleeve, the stud extends out of the square sleeve, and a nut is installed on the stud. The utility model has the effects that the strength of the bar is greatly improved, and the impact fracture is effectively prevented; the bar body is provided with the square connector, edges and planes, the square sleeve matched with the bar body is used during installation, positioning in the circumferential direction is achieved, and looseness caused by rotation in the using process of the bar is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of screening equipment, in particular to a bar, and further relates to a bar screen. Background Art

[0002] Mobile heavy screening stations are widely used in scenarios such as mines and construction waste recycling, mainly for the screening of coarse materials. After the materials are crushed, the particle size of the materials is irregular, the particle diameter is large, and the weight is large. If the screening meshes of each layer of the screening box all adopt mesh screens, faults such as frequent mesh breakage, loosening, and blockage will occur. Therefore, the common technical solution in the industry is that the first layer of the screening mesh of the screening box is replaced by a bar screen or a grate screen, and most of them use bar screens. The installation position of the bar screen in the screening box is as Figure 6 shown.

[0003] Currently, the commonly used bar screen adopts needle-shaped bars, which are locked to the bracket by nuts, and its installation structure is as Figure 7 shown. This bar screen has two problems: 1. The strength of the needle-shaped bars is insufficient, and the bars often break when impacted by large-particle high-density materials (such as large stones); 2. The circumferential positioning effect of the needle-shaped bars is not ideal. During continuous operation, due to the rotation of the bars, the fasteners become loose, resulting in the bars falling off. The schematic diagram of the needle-shaped bars and their installation structure is as Figures 7 to 9 shown. The breakage or falling off of the bars not only affects the screening effect and reduces the operation efficiency, but the broken or fallen-off needle-shaped bars will also cause irreversible damage to the conveyor belt. Content of the Utility Model

[0004] The purpose of the utility model is, first of all, to solve the problem that the strength of the needle-shaped bars adopted by the existing bar screen is insufficient, and to propose and design an I-shaped bar, which greatly improves the strength of the bar and effectively prevents impact breakage.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a bar, including a bar body, the outer surface of the bar body has four planes, namely an upper plane, a lower plane, a left plane and a right plane, the upper plane and the lower plane are arranged oppositely, the left plane and the right plane are arranged oppositely, and grooves are arranged on both the left plane and the right plane. Overall, an I-shaped bar is formed. In the case of the same weight and the same material, compared with the needle-shaped bar, this I-shaped bar in this solution has higher strength. By designing the cross-section of the bar as an I-shaped, the strength of the bar is greatly improved, and impact breakage is effectively prevented.

[0006] In addition, in view of the problem that the needle-shaped bars used in the existing bar screens cause the fasteners to loosen due to rotation, resulting in the bars falling off, the present utility model is further improved in that a square connecting head is provided at the installation end of the bar body. By providing a square connecting head on the bar body, which has edges and planes, a square sleeve matching with it is used during installation to achieve circumferential positioning, effectively preventing the bars from loosening due to rotation during use.

[0007] Furthermore, a positioning groove is provided on the square connecting head. Specifically, the positioning groove is arranged along the length direction of the bar body and is provided on the edge of the square connecting head. The positioning grooves are provided on all four sides of the square connecting head in the length direction of the bar body. Four positioning grooves are evenly distributed on the square connecting head to achieve tight engagement with the square sleeve during installation, thereby achieving positioning and preventing the bars from rotating.

[0008] Furthermore, the square connecting head has an outer end face, and the positioning groove penetrates the outer end face. This is more conducive to the insertion of the square sleeve during installation.

[0009] Furthermore, a stud is provided on the outer end face of the square connecting head. It is used for fastening with a nut during installation.

[0010] Furthermore, the end of the bar body far from the square connecting head to the end close to the square connecting head gradually becomes wider from thin.

[0011] On the other hand, the present utility model also provides a bar screen, which includes the above-mentioned bars, and also includes a bracket. A square sleeve is fixed on the bracket, the square connecting head is clamped into the square sleeve, the stud extends out of the square sleeve, and a nut is installed on the stud. Through the cooperation between the square connecting head on the bar and the square sleeve, circumferential positioning is achieved, effectively preventing the bars from loosening due to rotation during use; the bar is fixed on the bracket through the cooperation of the nut and the stud.

[0012] Furthermore, positioning protrusions are provided in the inner cavity of the square sleeve, and the positioning protrusions are clamped into the positioning grooves of the square connecting head. This further strengthens the positioning function and prevents the bars from rotating.

[0013] Furthermore, the positioning protrusions in the square sleeve do not penetrate the square sleeve. That is, the length of the positioning protrusion is less than the length of the square sleeve, and the end face of the positioning protrusion abuts and clamps with the end face of the positioning groove to achieve positioning at one end inside, and the other end outside is locked through a nut and a gasket.

[0014] It can be seen from the above technical solutions that the present utility model has the following advantages:

[0015] This solution provides a bar and a bar screen. By designing the cross-section of the bar as an I-shaped, the strength of the bar is greatly improved, effectively preventing impact fracture. By setting a square connecting head on the bar body and matching it with a square sleeve, circumferential positioning is achieved, effectively preventing the bar from loosening due to rotation during use, thus avoiding the bar from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of Embodiment 1 of the specific implementation of the present invention.

[0018] Figure 2 It is a schematic inner structure diagram of Embodiment 2 of the specific implementation of the present invention.

[0019] Figure 3 It is a schematic outer structure diagram of Embodiment 2 of the specific implementation of the present invention.

[0020] Figure 4 It is a schematic three-dimensional structure diagram of the square sleeve in Embodiment 2 of the specific implementation of the present invention.

[0021] Figure 5 It is a schematic sectional structure diagram of the square sleeve in Embodiment 2 of the specific implementation of the present invention.

[0022] Figures 6 - 9 It is a schematic diagram of the prior art described in the background art of the present invention.

[0023] In the figure, 1 is the bar body, 2 is the upper plane, 3 is the groove, 4 is the square connecting head, 5 is the positioning groove, 6 is the stud, 7 is the bracket, 8 is the square sleeve, 9 is the nut, 10 is the inner cavity, and 11 is the positioning protrusion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to make the purpose, features, and advantages of the present invention more obvious and understandable, the technical solutions in the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments of the present invention. Obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of this patent. In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. Specific Embodiment 1

[0026] As Figure 1 shown, this specific embodiment provides a bar, including a bar body 1. The outer surface of the bar body 1 has four planes, namely an upper plane 2, a lower plane, a left plane and a right plane. The upper plane 2 and the lower plane are arranged oppositely, and the left plane and the right plane are arranged oppositely. Grooves 3 are provided on both the left plane and the right plane, forming an I-shaped bar as a whole. Under the condition of the same weight and the same material, it has higher strength compared with a needle-shaped bar.

[0027] Among them, a square connector 4 is provided at the installation end of the bar body 1, and a positioning groove 5 is provided on the square connector 4. Specifically, the positioning groove 5 is arranged along the length direction of the bar body 1 and is provided on the four sides of the square connector 4. The square connector 4 has an outer end face, and the positioning groove 5 penetrates the outer end face. 4 positioning grooves 5 are evenly distributed on the square connector 4 to achieve a tight fit with the square sleeve 8 during installation, thereby enhancing the circumferential positioning function and effectively preventing the bar from loosening due to rotation during use.

[0028] Among them, a stud 6 is provided on the outer end face of the square connector 4. It is used for fastening with a nut 9 during installation.

[0029] In addition, one end of the bar body 1 far from the square connector 4 to the end close to the square connector 4 becomes wider from thinner. Specific Embodiment 2

[0031] As Figures 2 to 5 shown, this specific embodiment provides a bar screen, including the bar in Specific Embodiment 1, and further including a bracket 7. A square sleeve 8 is fixed on the bracket 7. The square connector 4 is snapped into the square sleeve 8, and the stud 6 extends out of the square sleeve 8. Through the cooperation of the square connector 4 on the bar and the square sleeve 8, circumferential positioning is achieved, effectively preventing the bar from loosening due to rotation during use. A nut 9 and a gasket are installed on the stud 6; the bar is fixed on the bracket 7 through the cooperation of the nut 9 and the stud 6.

[0032] Among them, referring to Figure 4 , a positioning protrusion 11 is provided in the inner cavity 10 of the square sleeve 8, and the positioning protrusion 11 is snapped into the positioning groove 5 of the square connector 4 to further strengthen the positioning function and prevent the bar from rotating.

[0033] In addition, referring to Figure 5 , the positioning protrusion 11 in the square sleeve 8 does not penetrate the square sleeve 8, that is, the length of the positioning protrusion 11 is less than the length of the square sleeve 8. The end face of the positioning protrusion 11 abuts and clamps with the end face of the positioning groove 5 to achieve positioning at one end of the inner side, and the outer end is locked through the nut 9 and the gasket.

[0034] In the description of the present utility model, the terms "upper", "lower", "outer side", "inner side", etc. (if any) in the specification, claims and the above-mentioned drawings are used to distinguish the relative relationship in position, and do not have to be given a qualitative definition. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0035] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can also be the communication inside two elements. It can be a wireless connection or a wired connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bar, comprising a bar body, characterized in that, The outer surface of the bar body has four planes, namely the upper plane, the lower plane, the left plane and the right plane. The upper plane and the lower plane are arranged opposite to each other, and the left plane and the right plane are arranged opposite to each other. Grooves are provided on both the left plane and the right plane.

2. The bar as claimed in claim 1, wherein A square connector is provided at the installation end of the bar body.

3. The bar as claimed in claim 2, wherein, A positioning groove is provided on the square connector.

4. The bar as claimed in claim 3, wherein The positioning groove is arranged along the length direction of the bar body and is provided on the edge of the square connector.

5. The bar as claimed in claim 3, wherein The square connector has an outer end face, and the positioning groove penetrates the outer end face.

6. The bar as claimed in claim 5, wherein A stud is provided on the outer end face of the square connector.

7. The bar according to any one of claims 2-6, characterized in that One end of the bar body away from the square connector becomes wider from thin to the end close to the square connector.

8. A bar screen, characterized in that, It includes the bar described in claim 6, and also includes a bracket. A square sleeve is fixed on the bracket. The square connector is snapped into the square sleeve, the stud extends out of the square sleeve, and a nut is installed on the stud.

9. The bar screen according to claim 8, characterized in that, A positioning protrusion is provided in the inner cavity of the square sleeve, and the positioning protrusion is snapped into the positioning groove of the square connector.

10. The bar screen according to claim 9, wherein, The length of the positioning protrusion is less than the length of the square sleeve.

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