Combined grate bar

Abstract

The utility model discloses a combined type screen bar which comprises three sections of detachable screen bars, each of a left side screen bar and a right side screen bar comprises a group of complete screen holes and a group of 1 / 2 screen holes, two sides of a middle screen bar are respectively provided with a group of 1 / 2 screen holes, and after the middle screen bar is installed, the 1 / 2 screen holes in the two sides of the middle screen bar are respectively combined with the 1 / 2 screen holes in the left side screen bar and the 1 / 2 screen holes in the right side screen bar to form a group of complete screen holes. And a plurality of sieve pore units with the same size are arranged in each group of sieve pores. The whole grate bar is divided into the three-section type structure, the size is reduced, the problem of casting cracks caused by the too large size is avoided, in addition, the two blocks on the two sides in the three-section type structure each comprise a set of complete sieve holes, and the group of sieve holes are formed in the casting process with the standard hole diameter; meanwhile, four groups of 1 / 2 sieve holes are formed between the two sieve holes on the two sides and the middle sieve hole to be combined into two groups of complete sieve holes, and the combined sieve holes can be polished and finished even if the sizes of the sieve holes are different, so that the sizes of the sieve holes are consistent, and finally, the sieving quality is ensured.

Description

Technical Field

[0001] The utility model relates to a sieve bar for a crusher, in particular to a combined sieve bar. Background Art

[0002] The sieve bar is a component in a crusher for mines. It has several sieve holes. During crushing, the ore is screened through the sieve holes. The ore with a particle size smaller than the aperture of the sieve hole falls through the sieve hole, while the ore larger than the aperture of the sieve hole falls after being crushed.

[0003] The sieve bars are generally divided into single beams and double beams. Both single beams and double beams include multiple sieve bars. During installation, multiple sieve bars need to be assembled. There is a problem with the assembly structure, that is, the size of the blanking port is often inconsistent during assembly, resulting in inaccurate screening in the screening step during the crushing process. However, if it is set as an integral structure, the probability of cracks in casting will increase, affecting the overall structural strength. Summary of the Utility Model

[0004] Based on the deficiencies in the prior art that the inconsistent size of the blanking holes caused by the assembly of multiple sieve bars affects the screening accuracy, and setting the sieve bar as an integral structure will increase the probability of cracks in casting and affect the overall structural strength, the utility model provides a combined sieve bar.

[0005] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0006] The combined sieve bar includes a left sieve bar, a middle sieve bar, and a right sieve bar. The left and right sides of the middle sieve bar are detachably connected to the left sieve bar and the right sieve bar respectively. Both the left sieve bar and the right sieve bar include a set of complete sieve holes and a set of 1 / 2 sieve holes. Each side of the middle sieve bar is provided with a set of 1 / 2 sieve holes, and after the middle sieve bar is installed, the 1 / 2 sieve holes on both sides of it are combined with the 1 / 2 sieve holes on the left sieve bar and the right sieve bar to form a set of complete sieve holes. Each set of sieve holes includes several sieve hole units of the same size.

[0007] Preferably, the horizontal spacing of each set of sieve holes is the same.

[0008] Preferably, each set of sieve holes includes several sieve hole units with the same vertical spacing.

[0009] Preferably, a guiding baffle is provided between adjacent two sets of sieve holes.

[0010] Preferably, both ends of the guiding baffle are provided with arc-shaped chamfers.

[0011] Preferably, there are mutually abutting steps between the left sieve bar and the middle sieve bar, and between the right sieve bar and the middle sieve bar, and there are mutually abutting abutting surfaces between the steps. Through holes are provided at the steps, and mounting bolts are provided in the through holes.

[0012] Preferably, after the left sieve bar, the middle sieve bar and the right sieve bar are installed, an arched structure with the middle arched outwards is formed.

[0013] Preferably, the arched structure is a circular arched structure.

[0014] Preferably, the abutting surfaces between the middle sieve bar and the left sieve bar and between the middle sieve bar and the right sieve bar, except for the abutting surfaces of the steps, are all located on the radial section of the circular arched structure.

[0015] Preferably, after the left sieve bar, the middle sieve bar and the right sieve bar are installed, an arched curved surface concave inwards is formed at both ends.

[0016] Compared with the prior art, the advantages of the present utility model are as follows: In this application, the entire sieve bar is divided into a three-section structure, which reduces the volume and thus avoids the problem of casting cracks caused by excessive volume. In addition, both of the two blocks on both sides in the three-section structure include a set of complete sieve holes, and this set of sieve holes is formed with standard apertures during casting. At the same time, four groups of 1 / 2 sieve holes are provided between the two blocks on both sides and the one block in the middle to be combined into two sets of complete sieve holes. Even if the sizes of the combined sieve holes are different, they can be polished and trimmed, so as to ensure that the sizes of all sieve holes are the same, and finally ensure the screening quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present utility model will be further described in detail below in conjunction with the drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are only drawn for the purpose of explaining the preferred embodiments and should not be regarded as limiting the scope of the present utility model. In addition, unless otherwise specified, the drawings only schematically show the composition or structure of the described object and may include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0018] Figure 1 is the top view of this application;

[0019] Figure 2 is the perspective view of this application;

[0020] Figure 3 is the perspective view of this application;

[0021] Figure 4 is the side view of this application;

[0022] In the figure: 101, left sieve bar; 1011, 1031, steps; 102, middle sieve bar; 103, right sieve bar; 104, guiding baffle; 105, sieve hole; 106, 1 / 2 sieve hole; 107, arched curved surface; 108, abutting surface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only descriptive and exemplary, and should not be construed as limiting the scope of protection of the present utility model.

[0024] It should be noted that like reference numerals represent like items in the following drawings. Therefore, once an item is defined in one drawing, it may not be further defined and explained in subsequent drawings.

[0025] This embodiment mainly elaborates on the title of the combined sieve bars, specifically as follows:

[0026] Currently, sieve bars are generally divided into single-beam and double-beam types. Both single-beam and double-beam types include multiple sieve bars. During installation, multiple sieve bars need to be assembled. There is a problem with the assembly structure, that is, the sizes of the blanking openings are often inconsistent during assembly, resulting in inaccurate screening during the sieving step in the crushing process. However, if it is set as an integral structure, the probability of casting cracks will increase, affecting the overall structural strength.

[0027] Main scheme :

[0028] In response to the above problems, this embodiment provides a combined sieve bar. Referring to the attached Figures 1 - 4 , it includes a left sieve bar 101, a left sieve bar 102, and a right sieve bar 103. The left and right sides of the left sieve bar 102 are detachably connected to the left sieve bar 101 and the right sieve bar 103 respectively. Both the left sieve bar 101 and the right sieve bar 103 include a set of complete sieve holes 105 and a set of 1 / 2 sieve holes 106. Each side of the left sieve bar 102 is provided with a set of 1 / 2 sieve holes 106, and after the left sieve bar 102 is installed, the 1 / 2 sieve holes 106 on both sides of it are combined with the 1 / 2 sieve holes 106 on the left sieve bar 101 and the right sieve bar to form a set of complete sieve holes 105. Each set of sieve holes 105 includes several sieve hole units 105 of the same size. This solution divides the entire sieve bar into a three-section structure, reducing the volume, thereby avoiding the problem of casting cracks due to excessive volume. In addition, in the three-section structure, both of the two blocks on the two sides include a set of complete sieve holes 105. This set of sieve holes 105 is formed with standard apertures during casting. At the same time, there are four sets of 1 / 2 sieve holes 106 between the two blocks on the two sides and the middle block to form two sets of complete sieve holes 105. Even if the sizes of the combined sieve holes 105 are inconsistent, they can be polished and trimmed, so as to ensure that the sizes of all sieve holes 105 are the same, and finally ensure the screening quality.

[0029] Preferably, the lateral spacing of each set of sieve holes 105 is the same, and each set of sieve holes 105 includes several sieve hole units 105 with the same longitudinal spacing. Setting the sieve holes 105 equally spaced in both the horizontal and vertical directions can improve the overall uniformity of the sieve holes 105 and the screening effect.

[0030] Preferably, a guiding baffle 104 is provided between two adjacent groups of screening holes 105. The guiding baffle 104 forms a number of blanking grooves, and each blanking groove divides the added ore, and cooperates with the screening holes 105 in each blanking groove for screening. The ore with small particle size falls through the screening holes 105, while the ore with large particle size is further broken and then falls through the gaps of the crushing tooth plates.

[0031] Preferably, the two ends of the guiding baffle 104 are provided with arc-shaped chamfers. Compared with the right-angled settings on both sides of the guiding baffle 104, chamfering is more conducive to feeding and discharging.

[0032] Installation structure :

[0033] As shown in Figure 1 , 3 , Figure 4, steps 1011 and 1031 that abut against each other are provided between the left screening bar 101 and the left screening bar 102, and between the right screening bar 103 and the left screening bar 102, and there is an abutting surface 108 that abuts against each other between the steps 1011 and 1031. Through holes are provided at the steps 1011 and 1031, and mounting bolts are provided in the through holes.

[0034] Preferably, after the left screening bar 101, the left screening bar 102, and the right screening bar 103 are installed, an arched structure with the middle arched outward is formed. The arched structure can increase its structural strength, and the force borne on the convex side is greater than that of a flat structure.

[0035] Preferably, the arched structure is a circular arched structure. Preferably, the abutting surfaces between the left screening bar 102 and the left screening bar 101, and between the left screening bar 102 and the right screening bar 103 are located on the radial section of the circular arched structure except for the abutting surface 108 of the steps 1011 and 1031. The circular arched structure is more standard and has less manufacturing difficulty. In addition, its force is more uniform.

[0036] Preferably, after the left screening bar 101, the left screening bar 102, and the right screening bar 103 are installed, concave arched surfaces 107 are formed at both ends. This structure is installed in cooperation with the crusher table. An arched platform is provided on the table and extends into the concave arched surface 107 to abut against it, so that it can provide a force in the left-right direction and increase the stability after installation.

[0037] The above has introduced the title provided by the present utility model in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the present utility model and its core idea. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. Combined screen bar, characterized in that: It includes left-side screen bars, middle screen bars and right-side screen bars. The left and right sides of the middle screen bar are detachably connected to the left-side screen bar and the right-side screen bar respectively. The left-side screen bar and the right-side screen bar each include a group of complete screen holes and a group of 1 / 2 screen holes. A group of 1 / 2 screen holes is provided on each side of the middle screen bar. After the middle screen bar is installed, the 1 / 2 screen holes on both sides are respectively combined with the 1 / 2 screen holes on the left screen bar and the right screen to form a complete group of screen holes. Each group of screen holes includes a number of screen hole units of the same size.

2. The combined screen bar according to claim 1, characterized in that: The lateral spacing between each group of sieve holes is the same.

3. The combined screen bar according to claim 2, characterized in that: Each group of sieve holes includes a plurality of sieve hole units with the same longitudinal spacing.

4. The combined screen bar according to claim 1, characterized in that: A guide baffle is provided between two adjacent groups of sieve holes.

5. The combined screen bar according to claim 4, characterized in that: Arc-shaped chamfers are arranged at both ends of the guide baffle.

6. The combined screen bar according to claim 1, characterized in that: Steps abutting against each other are arranged between the left screen bar and the middle screen bar, and between the right screen bar and the middle screen bar, and abutting surfaces abutting against each other are arranged between the steps. Penetrating mounting holes are arranged at the steps, and mounting bolts are arranged in the mounting holes.

7. The combined screen bar according to claim 6, characterized in that: After the left screen bar, the middle screen bar and the right screen bar are installed, an arched structure with the middle part arched outwards is formed.

8. The combined screen bar according to claim 7, characterized in that: The arch structure is a round arch structure.

9. The combined screen bar according to claim 8, characterized in that: The abutting surfaces of the middle screen bar and the left screen bar, and the abutting surfaces of the middle screen bar and the right screen bar are all located on the radial section of the circular arch structure except the abutting surface of the step.

10. The combined screen bar according to claim 6, characterized in that: After the left screen bar, the middle screen bar and the right screen bar are installed, concave arched surfaces are formed at both ends.

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