Grid section

Abstract

The utility model belongs to the technical field of fire grate bars, and particularly provides a grate bar which comprises a cross beam, supporting legs, bottom supports, main distance pieces and rotating abutting pieces, the two main distance pieces are arranged on the front side wall and the rear side wall of the cross beam respectively, the bottom supports are arranged at the lower ends of the supporting legs, the bottom supports and the supporting legs are combined to form an L shape, and the two bottom supports are symmetrically arranged on the left side and the right side of the bottom face of the cross beam. The four rotating abutting pieces are arranged on the front side wall and the rear side wall of the cross beam in pairs correspondingly. According to the scheme, the rotary abutting pieces are arranged to ensure that the grid sections maintain a stable spacing relation in the turning process of the trolley, and meanwhile, the action of the grid sections in the turning process is smoother; by optimizing the structural characteristics of the supporting legs, the front side walls and the rear side walls of the supporting legs are inclined planes, and the situation that adjacent grid sections rigidly collide in the trolley overturning process is avoided; and by adopting a flexible assembly type structure, the grid section can meet the use requirements under different working conditions.

Description

Technical Field

[0001] The utility model belongs to the technical field of grate bars, and in particular provides a grate bar. Background Art

[0002] In a sintering or pelletizing machine, bulk material, such as iron ore, is loaded onto a moving grate mounted on a trolley. The trolley then travels through the processing stations for heat treatment and discharge. After the stations, the trolley is flipped over to discharge the heat-treated product and then returned to its starting point. The grate is composed of multiple parallel bars that allow airflow. The bars are connected to the trolley via a tongue-and-groove design, which maintains a constant movement for self-cleaning.

[0003] The common grate structure on the market is relatively simple and single. Under the premise that the grate spacing is large and the trolley turning radius is large enough, there will be no extrusion and offset between adjacent grate bars. However, for equipment with a small grate spacing or a small trolley turning radius, considering that there is an assembly method with the beam ground as the main support surface and the bottom end face of the leg as the auxiliary assembly point, the bottom end of the leg may collide during the trolley turning process, making it difficult to maintain the trolley turning stability while ensuring a small grate spacing. Utility Model Content

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a grate bar, comprising a crossbeam, supporting legs, a bottom support, a main spacer and a rotating abutment, wherein the two main spacers are respectively arranged on the front side wall and the rear side wall of the crossbeam, the bottom support is arranged at the lower end of the supporting legs, and the two are combined to form an L shape, the two supporting legs are symmetrically arranged on the left and right sides of the bottom surface of the crossbeam, and the four rotating abutments are respectively arranged in groups of two on the front side wall and the rear side wall of the crossbeam;

[0005] Wherein, the rotating abutment is cylindrical, the rotating abutment is horizontally arranged, and the central axis of the rotating abutment and the bottom surface of the crossbeam are located in the same horizontal plane;

[0006] The rotating abutment member is provided with a plurality of grooves and a plurality of bosses, and the grooves and bosses are alternately combined;

[0007] The alternating order of the grooves and bosses on the two corresponding rotating abutments on the front and rear sides of the beam is opposite, and the alternating order of the grooves and bosses on the two corresponding rotating abutments on the left and right sides of the beam is also opposite.

[0008] Furthermore, the front and rear side walls of the supporting legs are both inclined surfaces.

[0009] Furthermore, the rotating abutment is an assembled rotating abutment, and a rotating abutment assembly groove is provided on the front side wall and the rear side wall of the crossbeam, and the position of the rotating abutment assembly groove matches the assembly position of the rotating abutment;

[0010] A positioning ring is provided in the rotating abutment assembly groove, and a positioning ring embedding groove is provided on the side of the rotating abutment that cooperates with the rotating abutment assembly groove, and a screw is axially installed in the center of the rotating abutment. The screw passes through the positioning ring during the threaded connection process to fix the rotating abutment.

[0011] Furthermore, the grate bars further include bottom abutment members, and the two bottom abutment members are arranged at the bottoms of the two bottom brackets, and the front and rear ends of the bottom abutment members respectively extend outwards from the front and rear sides of the bottom brackets.

[0012] Furthermore, the bottom abutment is an assembled bottom abutment, a bottom abutment assembly groove is provided on the bottom surface of the bottom support, the bottom abutment is a long plate structure, the bottom abutment is embedded in the bottom abutment assembly groove, and the two are fixedly connected by bolts.

[0013] Furthermore, the grate bars also include side spacers, the main spacer is located at the center of the side wall of the beam, and the four side spacers are respectively arranged at the left and right ends of the front and rear side walls of the beam.

[0014] Furthermore, the main spacer is rhombus-shaped, and the side spacer is triangular-shaped.

[0015] The beneficial effects of using the utility model are:

[0016] This solution ensures that the grate bars maintain a stable spacing relationship during the turning of the trolley by providing a rotating abutment, and at the same time, makes the grate bars move more smoothly during the process;

[0017] By optimizing the structural features of the outriggers and making their front and rear side walls inclined, rigid collisions between adjacent grate bars during the trolley flipping process are avoided.

[0018] By adopting a flexible and assembled structure, it is ensured that the grate bars can meet the requirements of different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is the main view of the utility model;

[0021] Figure 3 It is a top view of multiple spliced utility models;

[0022] Figure 4 It is a bottom view of the utility model;

[0023] Figure 5 This is a structural diagram of the assembly slot of the utility model;

[0024] Figure 6 for Figure 1Enlarged view of point a in the middle;

[0025] Figure 7 It is a left view of the utility model;

[0026] Figure 8 It is a left view of multiple pieces of the present invention spliced together;

[0027] Reference numerals include:

[0028] 1. Crossbeam; 2. Support legs; 3. Bottom bracket; 4. Main spacer;

[0029] 5. Rotating abutment member; 501. Rotating abutment member assembly groove; 502. Groove; 503. Boss; 504. Screw;

[0030] 6. Bottom abutment member; 601. Bottom abutment member assembly groove;

[0031] 7. Side spacers;

[0032] α, rotation compensation angle; β, side spacer opening angle; γ, beam end face opening angle. DETAILED DESCRIPTION

[0033] The present invention is described in detail below with reference to the accompanying drawings.

[0034] Reference Figures 1-8 A grate comprises a crossbeam 1, legs 2, a bottom support 3, a main spacer 4 and a rotating abutment 5. Two main spacers 4 are respectively arranged on the front side wall and the rear side wall of the crossbeam 1, and the bottom support 3 is arranged at the lower end of the legs 2. The combination of the two forms an L shape. The two legs 2 are symmetrically arranged on the left and right sides of the bottom surface of the crossbeam 1. Four rotating abutments 5 are respectively arranged in groups of two on the front side wall and the rear side wall of the crossbeam 1.

[0035] The rotating abutment member 5 is cylindrical, and is arranged horizontally. The central axis of the rotating abutment member 5 and the bottom surface of the beam 1 are located in the same horizontal plane.

[0036] Reference Figure 7 Specifically, the front and rear side walls of the support leg 2 are both inclined surfaces, which are used for rotation compensation, and the rotation compensation angle α is 10 degrees to 15 degrees.

[0037] Preferably, the beam 1 is a quadrangular prism, the front and rear side surfaces of the beam 1 are both isosceles trapezoids, and the two are parallel to each other, the left and right end surfaces of the beam 1 are both inclined surfaces, the top and bottom surfaces of the beam 1 are both rectangular, and the area of the top surface is smaller than that of the bottom surface.

[0038] Preferably, a plurality of grooves 502 and a plurality of bosses 503 are provided on the rotating abutment 5, and the grooves 502 and the bosses 503 are alternately combined, wherein the alternating order of the grooves 502 and the bosses 503 on the rotating abutment 5 corresponding to the front and rear sides of the beam 1 is opposite, and the alternating order of the grooves 502 and the bosses 503 on the two rotating abutment 5 corresponding to the left and right sides of the beam 1 is also opposite.

[0039] Preferably, the rotating abutment 5 is an assembled rotating abutment, and a rotating abutment assembly groove 501 is provided on the front side wall and the rear side wall of the crossbeam 1. The position of the rotating abutment assembly groove 501 matches the assembly position of the rotating abutment 5.

[0040] A positioning ring is provided in the rotating abutment assembly groove 501, and a positioning ring groove is provided on the side of the rotating abutment 5 that cooperates with the rotating abutment assembly groove 501, and a screw 504 is axially assembled in the center of the rotating abutment 5. The screw 504 passes through the positioning ring during the threaded connection process to fix the rotating abutment 5.

[0041] A grate bar further includes a bottom abutment member 6 , wherein the two bottom abutment members 6 are arranged at the bottom of the two bottom brackets 3 , and the front and rear ends of the bottom abutment members 6 extend outward from the front and rear sides of the bottom brackets 3 respectively.

[0042] Preferably, the bottom abutment 6 is an assembled bottom abutment, and a bottom abutment assembly groove 601 is provided on the bottom surface of the bottom support 3. The bottom abutment 6 is a long plate structure, and the bottom abutment 6 is embedded in the bottom abutment assembly groove 601, and the two are fixedly connected by bolts.

[0043] A grate bar further includes side spacers 7, a main spacer 4 is located at the center of the side wall of the beam 1, and four side spacers 7 are respectively arranged at the left and right ends of the front and rear side walls of the beam 1;

[0044] Specifically, the main spacer 4 is rhombus-shaped and the side spacer 7 is triangular;

[0045] The side spacer opening angle β is smaller than the beam end surface opening angle γ.

[0046] The above content is only a preferred embodiment of the present invention. For ordinary technicians in this field, many changes can be made in the specific implementation methods and application scope based on the concept of the present invention. As long as these changes do not deviate from the concept of the present invention, they all fall within the scope of protection of the present invention.

Claims

1. A grate bar, characterized in that: The invention comprises a crossbeam, a support leg, a bottom bracket, a main spacer and a rotating abutment. The two main spacers are respectively arranged on the front side wall and the rear side wall of the crossbeam. The bottom bracket is arranged at the lower end of the support leg. The combination of the two forms an L shape. The two support legs are symmetrically arranged on the left and right sides of the bottom surface of the crossbeam. The four rotating abutments are respectively arranged in groups of two on the front side wall and the rear side wall of the crossbeam. Wherein, the rotating abutment is cylindrical, the rotating abutment is horizontally arranged, and the central axis of the rotating abutment and the bottom surface of the crossbeam are located in the same horizontal plane; The rotating abutment member is provided with a plurality of grooves and a plurality of bosses, and the grooves and bosses are alternately combined; The alternating order of the grooves and bosses on the two corresponding rotating abutments on the front and rear sides of the beam is opposite, and the alternating order of the grooves and bosses on the two corresponding rotating abutments on the left and right sides of the beam is also opposite.

2. A grate bar according to claim 1, characterized in that: The front and rear side walls of the supporting legs are both inclined surfaces.

3. A grate bar according to claim 1, characterized in that: The rotating abutment is an assembled rotating abutment. The front and rear side walls of the crossbeam are both provided with rotating abutment assembly grooves, and the positions of the rotating abutment assembly grooves match the assembly positions of the rotating abutment. A positioning ring is provided in the rotating abutment assembly groove, and a positioning ring embedding groove is provided on the side of the rotating abutment that cooperates with the rotating abutment assembly groove, and a screw is axially installed in the center of the rotating abutment. The screw passes through the positioning ring during the threaded connection process to fix the rotating abutment.

4. A grate bar according to claim 1, characterized in that: The grate bars further include bottom abutment members, which are arranged at the bottoms of the two bottom brackets. The front and rear ends of the bottom abutment members respectively extend outwards from the front and rear sides of the bottom brackets.

5. A grate bar according to claim 4, characterized in that: The bottom abutment is an assembled bottom abutment, a bottom abutment assembly groove is provided on the bottom surface of the bottom support, the bottom abutment is a long plate structure, the bottom abutment is embedded in the bottom abutment assembly groove, and the two are fixedly connected by bolts.

6. A grate bar according to claim 1, characterized in that: The grate bars also include side spacers, the main spacer is located at the center of the side wall of the beam, and the four side spacers are respectively arranged at the left and right ends of the front and rear side walls of the beam.

7. A grate bar according to claim 6, characterized in that: The main spacer is in a diamond shape, and the side spacer is in a triangle shape.

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