A detachable drop plate

Abstract

The application discloses a detachable drop plate and belongs to the field of coal mine screening. The detachable drop plate comprises a feeding frame, a supporting mechanism, a drop plate, a gear and a rack. The supporting mechanism is arranged on the feeding frame to fix and support the drop plate. The supporting mechanism is provided with a supporting plate and a mounting frame. The spring is arranged to buffer the impact force received by the drop plate, so that the impact force received by the drop plate is reduced, the damage of the drop plate is reduced, and the service life is prolonged. The gear and the rack are arranged outside the feeding frame to control the overturning of the supporting mechanism, so that the inclination angle of the drop plate can be adjusted, and the purpose of adjusting the guide angle is achieved.

Description

Technical Field

[0001] This invention belongs to the field of coal screening, specifically relating to a detachable drop plate. Background Technology

[0002] Sine roller screens are used for coarse screening, fine screening, raw coal screening, and aggregate screening. In actual screening processes, the conditions are very complex, with materials often containing hard large rocks and ironware. When these impurities are transported by belt conveyor from the head chute into the roller screen inlet, the height difference and gravitational acceleration cause them to impact the drop plates inside the inlet. Under prolonged impact, even wear-resistant steel plates will suffer severe wear until they become unusable and the inlet needs replacement. Since the drop plates inside the roller screen inlet are welded to the inlet frame, replacing the drop plates requires replacing the entire inlet, increasing the customer's production and operating costs, increasing the labor intensity of workers, extending the normal equipment maintenance period, and impacting the operating costs of mineral processing enterprises. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of this invention is to provide a detachable drop plate, which increases the service life of the drop plate and makes the disassembly and replacement of the drop plate more convenient.

[0004] The objective of this invention can be achieved through the following technical solutions:

[0005] A detachable drop plate includes a feeding frame, a drop plate disposed inside the feeding frame, and a support mechanism installed inside the feeding frame.

[0006] The support mechanism includes a mounting frame, which includes a first mounting plate mounted on the feed frame, and a second mounting plate fixed above the first mounting plate. A support plate is provided above the second mounting plate, and a drop plate is fixed to the upper end of the support plate by pan head screws. Two guide rods are fixed at the lower end of the support plate, and the guide rods pass through the second mounting plate and are slidably connected to it. A frustum is provided on the guide rod, the diameter of which is larger than the diameter of the guide rod, and the frustum is located between the first and second mounting plates. A spring is sleeved on the guide rod, and the two ends of the spring are fixedly connected to the first mounting plate and the frustum, respectively. Under the elastic force of the spring, the frustum tends to move in accordance with the second mounting plate, so that the support plate can be suspended above the second mounting plate.

[0007] Furthermore, the drop plate is manufactured through the following steps:

[0008] S1. Overlay welding; Direct overlay welding of high-hardness, high-alloy wear-resistant welding wire onto A3 steel plate;

[0009] S2. Machining: Milling and grinding the steel plate after welding to prepare a drop plate of the required size;

[0010] S3. Drilling: Using plasma cutting technology, holes are cut into the drop plate for installing pan head screws.

[0011] The beneficial effects of this invention are:

[0012] 1. The drop plate is fixedly supported by a support mechanism on the feeding frame. The support mechanism is equipped with a support plate and a mounting frame. Springs are used to buffer the impact force on the drop plate, thereby reducing the impact force on the drop plate and reducing damage to the drop plate, thus increasing its service life.

[0013] 2. By setting gears and racks on the outside of the feed frame, the rotation of the support mechanism can be controlled, thereby adjusting the tilt angle of the drop plate and achieving the purpose of adjusting the guide angle. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the feeding frame structure according to an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the support mechanism structure according to an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the support plate structure according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the mounting bracket structure according to an embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of the limiting block structure according to an embodiment of the present invention. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figure 1-6 As shown, a detachable drop plate includes a feeding frame 1, in which a drop plate 3 is installed. Coal gangue falls through the drop plate 3 to complete the feeding guidance.

[0023] A support mechanism 2 is provided on the feeding frame 1, and a drop plate 3 is fixed in the support mechanism 2. The support mechanism 2 includes a mounting frame 21 installed on the feeding frame 1. The mounting frame 21 includes a first mounting plate 211 installed on the feeding frame 1. A second mounting plate 212 is fixedly installed above the first mounting plate 211 and is suspended above the first mounting plate 211. A support plate 22 is provided above the second mounting plate 212. Two guide rods 221 are fixedly provided at the lower end of the support plate 22 and pass through the second mounting plate 21. 2. It is slidably connected to the second mounting plate 212; a frustum 222 is provided on the guide rod 221, the diameter of the frustum 222 is larger than the diameter of the guide rod 221, and the frustum 222 is located between the first mounting plate 211 and the second mounting plate 212. A spring 23 is sleeved on the guide rod 221, and the two ends of the spring 23 are fixedly connected to the first mounting plate 211 and the frustum 222 respectively. Under the elastic force of the spring 23, the frustum 222 has a tendency to move in contact with the second mounting plate 212, so that the support plate 22 can be suspended above the second mounting plate 212.

[0024] The drop plate 3 is fixed to the upper end of the support plate 22 by pan head screws, which facilitates disassembly and replacement; and when the coal gangue falls and collides with the drop plate 3, the spring 23 provides a buffering effect for the drop plate 3, thereby reducing the impact force on the drop plate 3, thus reducing the damage to the drop plate and increasing its service life.

[0025] In this embodiment, the guide rod 221 can pass through the first mounting plate 211 during sliding. A limit block 24 is provided at the end of the guide rod 221, and a screw 241 is provided on the limit block 24. A threaded hole 223 is provided at the end of the guide rod 221. By screwing the screw 241 into the threaded hole 223, the limit block 24 and the guide rod 221 can be fixedly connected. When the screw 241 on the limit block 24 is screwed in place, under the elastic force of the spring 23, the limit block 24 can be tightly attached to the lower end surface of the first mounting plate 211. At this time, the frustum 222 is not attached to the second mounting plate 212. Thus, by turning the limit block 24 to change the position of the limit block 24, the maximum distance between the support plate 22 and the first mounting plate 212 can be adjusted, thereby changing the buffer force of the spring 23.

[0026] A rotating rod 213 is fixed on each side of the first mounting plate 211. The two rotating rods 213 are coaxial and pass through the opposite side walls of the feeding frame 1, and are rotatably connected to the feeding frame 1.

[0027] A gear 4 is fixed on one of the rotating rods 213. Two fixed plates 11 are provided on the side of the feeding frame 1. A lead screw 6 is rotatably connected between the two fixed plates 11. A rack 5 is slidably connected to the feeding frame 1. The rack 5 meshes with the gear 4. The lead screw 6 passes through the side of the rack 5 in the vertical direction and is threadedly connected to the rack 5. A drive device 7 for driving the lead screw 6 to rotate is fixed on one of the fixed plates 11. By controlling the operation of the drive device 7, the mounting frame 21 can be rotated around the rotating rod 213, thereby adjusting the tilt angle of the drop plate 3 and achieving the purpose of adjusting the guide angle.

[0028] In this embodiment, to enhance the wear resistance and hardness of the drop plate 3 material, the drop plate is manufactured in the following manner:

[0029] S1. Overlay welding; Direct overlay welding of high-hardness, high-alloy wear-resistant welding wire onto A3 steel plate;

[0030] S2. Machining: Milling and grinding the steel plate after welding to prepare a drop plate of the required size;

[0031] S3. Drilling: Using plasma cutting technology, holes are cut into the drop plate for installing pan head screws.

[0032] Working principle:

[0033] The drop plate 3 is fixedly supported by a support mechanism 2 on the feed frame. The support mechanism 2 is equipped with a support plate 22 and a mounting bracket 21. A spring 23 is used to buffer the impact force on the drop plate 3, thereby reducing the impact force on the drop plate 3 and reducing damage to the drop plate, thus increasing its service life. By setting a gear 4 and a rack 5 on the outside of the feed frame 1, the support mechanism 2 is controlled to rotate, thereby adjusting the tilt angle of the drop plate 3 and achieving the purpose of adjusting the guide angle.

[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A detachable drop plate comprising a feeding frame (1), a drop plate (3) is arranged in the feeding frame (1), characterized in that, The support mechanism (2) is installed in the feeding frame (1); The support mechanism (2) comprises a mounting frame (21), the mounting frame (21) comprises a first mounting plate (211) mounted on the feeding frame (1), and a second mounting plate (212) is fixed above the first mounting plate (211); a support plate (22) is arranged above the second mounting plate (212), and the drop plate (3) is fixed at the upper end of the support plate (22) through a pan head screw; two guide rods (221) are fixed at the lower end of the support plate (22), the guide rods (221) penetrate through the second mounting plate (212) and are in sliding connection with the second mounting plate (212); a circular table (222) is arranged on the guide rod (221), the diameter of the circular table (222) is greater than the diameter of the guide rod (221), and the circular table (222) is located between the first mounting plate (211) and the second mounting plate (212); a spring (23) is sleeved on the guide rod (221), and the two ends of the spring (23) are fixedly connected with the first mounting plate (211) and the circular table (222) respectively; under the elastic force of the spring (23), the circular table (222) has a movement trend of abutting against the second mounting plate (212), so that the support plate (22) can be suspended above the second mounting plate (212); The guide rod (221) can penetrate through the first mounting plate (211) during sliding, and a limiting block (24) is threadedly connected to the end of the guide rod (221); and when the limiting block (24) is screwed into place, under the elastic force of the spring (23), the limiting block (24) can abut against the lower end face of the first mounting plate (211), at this time, the circular table (222) is not abutted against the second mounting plate (212); Two rotating rods (213) are fixed at the two sides of the first mounting plate (211) respectively, the two rotating rods (213) are coaxial, the two rotating rods (213) penetrate through opposite two side walls of the feeding frame (1) and are in rotary connection with the feeding frame (1); One of the rotating rods (213) is fixed with a gear (4), two fixed plates (11) are arranged on the side surface of the feeding frame (1), a lead screw (6) is rotatably connected between the two fixed plates (11), a rack (5) is slidably connected to the feeding frame (1), the rack (5) is in meshing connection with the gear (4), the lead screw (6) penetrates through the side of the rack (5) along the vertical direction and is in threaded connection with the rack (5), and one of the fixed plates (11) is fixed with a driving device (7) for driving the lead screw (6) to rotate.

2. The demountable fall board of claim 1, wherein, The drop plate is manufactured through the following steps: S1, build-up welding; high-hardness and high-alloy wear-resistant welding wires are directly built up on A3 steel plates; S2, mechanical processing; the steel plates after build-up welding are milled and polished to prepare drop plates with required sizes; S3, punching; holes for mounting pan head screws are cut on the drop plates by using a plasma cutting process.

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