Novel repositioning hopper for bucket wheel machine of thermal power plant

Abstract

The utility model relates to the technical field of power plant hopper equipment, and disclose a novel power plant bucket -wheel machine variable position hopper, including hopper body, be provided with blanking buffer subassembly on the hopper body, the end of hopper body is provided with overload impact resistance subassembly, the both sides of hopper body are provided with two mounting brackets symmetrically, the utility model discloses a blanking buffer subassembly is provided on the hopper body, the end of hopper body is provided with overload impact resistance subassembly, wherein the blanking buffer subassembly among the guide plate can provide the both sides of hopper body with reinforced support, can effectively buffer the material falling into the side of guide plate, greatly reduce the impact of material directly to the middle part or both sides of hopper body, and the receiving support frame in overload impact resistance subassembly can strengthen the impact resistance of hopper body end part, effectively prevent its damage fracture under the falling of overweight material, guarantee normal conveying of material, improve the security of overall material conveying.

Description

Technical Field

[0001] This utility model relates to the technical field of hopper equipment in thermal power plants, specifically a novel variable displacement hopper for a bucket wheel excavator in a thermal power plant. Background Technology

[0002] As a core piece of equipment for coal storage and reclaiming in thermal power plants, the bucket wheel excavator's operating efficiency, wear resistance, and adaptability directly affect the stability of coal supply and operating costs of the power plant. With the thermal power industry's transformation towards "high efficiency, energy saving, and low consumption," the types of coal used in coal yards are becoming increasingly complex (e.g., alternating use of lignite, bituminous coal, and mixed coal), leading to greater fluctuations in the height of coal stockpiles. Traditional fixed-structure bucket wheels are gradually revealing their insufficient adaptability.

[0003] A search revealed that Chinese Patent Publication No. CN 223408560 U discloses a novel variable-position hopper for a thermal power plant bucket wheel excavator. The hopper comprises: two side plates symmetrically arranged; a rear end plug positioned at one end of each of the two side plates, the rear end plug being trapezoidal in shape, with the ends of the two side plates fitting against the edges of the rear end plug; and a sealing skin positioned at the bottom outer side of the side plates, the lower side of which fits against the conveyor belt. This novel variable-position hopper for a thermal power plant bucket wheel excavator, through the inclination of the side plates and rear end plug, transforms the overall shape of the hopper into a channel-like structure, providing strong constraint and concentration of the coal flow. This ensures the coal falls onto the conveyor belt at the middle position, and changes the linear seal between the sealing skin and the receiving belt to a planar seal, increasing the contact area between the sealing skin and the belt, thus improving sealing performance and reliability.

[0004] The hoppers in the aforementioned patents still have certain shortcomings. Because the existing bucket wheel excavator hoppers lack effective overload protection mechanisms, the hoppers are easily damaged by continuous falling material impacts or some materials exceeding the rated load during continuous operation, causing the hopper body to deform or even the bucket wheel chamber to break and become unusable, resulting in material spillage and posing a significant risk of use. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a novel displacement hopper for bucket wheel excavators in thermal power plants. This solves the problem that existing bucket wheel excavator hoppers lack effective overload protection mechanisms, making them susceptible to damage during continuous operation due to continuous material impact or material exceeding the rated load. This damage can lead to hopper deformation, or even bucket wheel breakage, rendering the hopper unusable and causing material spillage, posing a significant risk to its use.

[0006] This utility model provides the following technical solution: a novel displacement hopper for a bucket wheel excavator in a thermal power plant, comprising a hopper body, a material dropping buffer assembly provided on the hopper body, an overload and impact-resistant assembly provided at the end of the hopper body, and two mounting brackets symmetrically arranged on both sides of the hopper body; The material feeding buffer assembly includes guide plates symmetrically inserted on both sides of the hopper body. A side baffle is vertically arranged on the bottom side of the guide plate. Several bottom through holes are evenly opened on the bottom walls of both sides of the hopper body. Several limiting screws are evenly arranged on the bottom of the guide plate. A buffer spring is sleeved on each limiting screw. The bottom of each limiting screw passes through the bottom through hole. A limiting nut is sleeved on the bottom of the limiting screw. Three limiting grooves are evenly opened on the side wall of the hopper body. Several limiting sliders are evenly arranged on the side of the guide plate. The limiting sliders are slidably inserted into the limiting grooves. The overload and impact-resistant component includes a receiving support frame disposed at the end of the hopper body. Two connecting slots are symmetrically opened on both sides of the bottom end of the receiving support frame. The receiving support frame is secured to the end of the hopper body through the connecting slots. Two connecting blocks are symmetrically arranged on both sides of the bottom end of the receiving support frame. Each connecting block is provided with a fastening hole. Two connecting fixing blocks are symmetrically arranged on both sides of the hopper body.

[0007] Preferred technical solution 1: The connecting fixing block has a connecting through hole, and the side of the connecting through hole has a side screw hole, and the bottom end of the connecting plug passes through the connecting through hole.

[0008] Preferred technical solution 2: A fastening bolt is inserted into the side screw hole, and the end of the fastening bolt extends through the side screw hole into the fastening insertion hole.

[0009] Preferred technical solution 3: The middle part of the bottom end of the hopper body is open.

[0010] This solution allows the material falling from the hopper body to be more concentrated and fall onto the conveyor belt through the middle of the bottom of the hopper body.

[0011] Preferred technical solution four: The side of the guide plate is inclined.

[0012] This solution enables the material falling onto the guide plate to be better guided to the middle of the hopper body, and reduces the impact of the material on the sides of the guide plate.

[0013] Preferred technical solution five: The side walls of the material receiving support frame are all inclined.

[0014] This solution allows materials falling onto the side wall of the receiving support frame to fall more effectively.

[0015] Compared with the prior art, this utility model provides a novel variable displacement hopper for a thermal power plant bucket wheel excavator, which has the following beneficial effects: This utility model has a material drop buffer assembly on the hopper body and an overload anti-impact assembly at the end of the hopper body. The guide plate in the material drop buffer assembly can provide reinforced support for both sides of the hopper body, and the bottom of the guide plate is supported by a buffer spring, which can effectively buffer the material falling into the side of the guide plate, greatly reducing the impact of the material directly on the middle or sides of the hopper body. The receiving support frame in the overload anti-impact assembly can enhance the impact resistance of the end of the hopper body, effectively preventing it from being damaged and broken when overweight materials fall, ensuring the normal conveying of materials and improving the overall safety of material conveying. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 For the present utility model Figure 1 Exploded view of the structure of the material feeding buffer assembly; Figure 3 For the present utility model Figure 2 Enlarged view of the middle limit screw structure; Figure 4 For the present utility model Figure 1 A schematic diagram of the structure of the intermediate material receiving support frame.

[0017] In the diagram: 1. Hopper body; 2. Material discharge buffer assembly; 3. Overload impact resistant assembly; 4. Mounting frame; 201. Guide plate; 202. Side baffle; 203. Bottom perforation; 204. Limiting screw; 205. Buffer spring; 206. Limiting nut; 207. Limiting groove; 208. Limiting slider; 301. Material receiving support frame; 302. Connecting slot; 303. Connecting insert; 304. Fastening insertion hole; 305. Connecting fixing block; 306. Connecting through hole; 307. Side screw hole; 308. Fastening bolt. Detailed Implementation

[0018] Please see Figure 1-4 , Example 1: A novel displacement bucket for a thermal power plant bucket wheel excavator includes a bucket body 1, a material drop buffer assembly 2 on the bucket body 1, an overload and impact resistant assembly 3 at the end of the bucket body 1, and two mounting brackets 4 symmetrically arranged on both sides of the bucket body 1.

[0019] The material feeding buffer assembly 2 includes guide plates 201 symmetrically inserted on both sides of the hopper body 1. A side baffle 202 is vertically arranged on the side of the bottom end of the guide plate 201. Several bottom through holes 203 are evenly opened on the bottom walls of both sides of the hopper body 1. Several limiting screws 204 are evenly arranged on the bottom end of the guide plate 201. A buffer spring 205 is sleeved on each limiting screw 204. The bottom end of each limiting screw 204 passes through the bottom through hole 203. A limiting nut 206 is sleeved on the bottom end of the limiting screw 204. Three limiting grooves 207 are evenly opened on the side wall of the hopper body 1. Several limiting sliders 208 are evenly arranged on the side of the guide plate 201. The limiting sliders 208 are slidably inserted into the limiting grooves 207.

[0020] The overload and impact-resistant component 3 includes a receiving support frame 301 disposed at the end of the hopper body 1. Two connecting slots 302 are symmetrically provided on both sides of the bottom end of the receiving support frame 301. The receiving support frame 301 is secured to the end of the hopper body 1 through the connecting slots 302. Two connecting blocks 303 are symmetrically provided on both sides of the bottom end of the receiving support frame 301. Each connecting block 303 is provided with a fastening hole 304. Two connecting fixing blocks 305 are symmetrically provided on both sides of the hopper body 1. A connecting through hole 306 is provided on the connecting fixing block 305. A side screw hole 307 is provided on the side of the connecting through hole 306. The bottom end of the connecting block 303 passes through the connecting through hole 306. A fastening bolt 308 is inserted into the side screw hole 307. The end of the fastening bolt 308 extends through the side screw hole 307 into the fastening hole 304.

[0021] Example 2: The difference between this example and Example 1 is that the bottom of the hopper body 1 is open at the middle.

[0022] This allows the material falling from the hopper body 1 to be more concentrated and fall onto the conveyor belt through the middle of the bottom of the hopper body 1.

[0023] Example 3: The difference between this example and Example 1 is that the side of the guide plate 201 is inclined.

[0024] This allows the material falling onto the guide plate 201 to be better guided to the middle of the hopper body 1, and reduces the impact of the material on the sides of the guide plate 201.

[0025] Example 4: The difference between this example and Example 1 is that the side walls of the receiving support frame 301 are all inclined.

[0026] This allows the material falling onto the side wall of the receiving support frame 301 to fall more effectively.

[0027] In this embodiment, because the existing bucket wheel excavator buckets lack an effective overload protection mechanism, the buckets are easily damaged by continuous falling material impact or some material exceeding the rated load during continuous operation, causing the bucket body to deform or even the bucket wheel chamber to break and become unusable, resulting in material spillage and posing a significant risk of use.

[0028] In summary, in practical implementation, by setting a material drop buffer assembly 2 and an overload anti-impact assembly 3 on the hopper body 1, and by symmetrically inserting guide plates 201 in the material drop buffer assembly 2 on both sides of the hopper body 1, the material falling into both sides of the hopper body 1 can directly contact the guide plates 201, avoiding direct impact of the material on both sides of the hopper body 1. The bottom side of the guide plate 201 is pierced through the bottom through hole 203 by a limiting screw 204, and the limiting screw 204 is fitted with a sleeve A buffer spring 205 is provided, which can provide elastic support for the guide plate 201. When the guide plate 201 is subjected to continuous impact from the material, the rebound force of the buffer spring 205 can provide appropriate buffering for the guide plate 201, thereby improving the service life of the guide plate 201 and the hopper body 1. The side of the guide plate 201 is slidably inserted into the limiting groove 207 through the provided limiting slider 208, making the connection between the guide plate 201 and the side wall of the hopper body 1 more stable.

[0029] The receiving support frame 301 in the overload anti-impact component 3 is engaged with the end of the hopper body 1 through the connecting slot 302. Since the top opening of the receiving support frame 301 is larger than the top opening of the hopper body 1, it can effectively increase the receiving area inside the hopper body 1, which is more conducive to the falling of materials. The receiving support frame 301 is thicker than the end of the hopper body 1, which can resist the falling of some materials exceeding the rated load, enhance the impact resistance when materials fall at the end of the hopper body 1, provide effective protection for the end of the hopper body 1, prevent the hopper body 1 from being easily damaged or broken during use, ensure the normal conveying of materials, and improve the overall safety of material conveying.

Claims

1. A novel variable displacement bucket for a thermal power plant bucket wheel excavator, comprising a bucket body (1), characterized in that: The hopper body (1) is provided with a material drop buffer assembly (2), the end of the hopper body (1) is provided with an overload anti-impact assembly (3), and two mounting brackets (4) are symmetrically arranged on both sides of the hopper body (1). The material feeding buffer assembly (2) includes guide plates (201) symmetrically inserted on both sides of the hopper body (1). A side baffle (202) is vertically arranged on the side of the bottom end of the guide plate (201). Several bottom through holes (203) are evenly opened on the bottom walls of both sides of the hopper body (1). Several limiting screws (204) are evenly arranged on the bottom end of the guide plate (201). A buffer spring (205) is sleeved on each of the limiting screws (204). The bottom end of each limiting screw (204) passes through the bottom through hole (203). A limiting nut (206) is sleeved on the bottom end of the limiting screw (204). Three limiting grooves (207) are evenly opened on the side wall of the hopper body (1). Several limiting sliders (208) are evenly arranged on the side of the guide plate (201). The limiting sliders (208) are slidably inserted into the limiting grooves (207). The overload anti-impact component (3) includes a receiving support frame (301) disposed at the end of the hopper body (1). Two connecting slots (302) are symmetrically opened on both sides of the bottom end of the receiving support frame (301). The receiving support frame (301) is secured to the end of the hopper body (1) through the connecting slots (302). Two connecting blocks (303) are symmetrically arranged on both sides of the bottom end of the receiving support frame (301). Each connecting block (303) is provided with a fastening hole (304). Two connecting fixing blocks (305) are symmetrically arranged on both sides of the hopper body (1).

2. The novel variable displacement bucket for a thermal power plant bucket wheel excavator according to claim 1, characterized in that: The connecting fixing block (305) has a connecting through hole (306), and a side screw hole (307) is provided on the side of the connecting through hole (306). The bottom end of the connecting plug (303) passes through the connecting through hole (306).

3. The novel variable displacement bucket for a thermal power plant bucket wheel excavator according to claim 2, characterized in that: A fastening bolt (308) is inserted into the side screw hole (307), and the end of the fastening bolt (308) extends through the side screw hole (307) into the fastening insertion hole (304).

4. The novel variable displacement bucket for a thermal power plant bucket wheel excavator according to claim 3, characterized in that: The bottom of the hopper body (1) is open at the middle.

5. The novel variable displacement bucket for a thermal power plant bucket wheel excavator according to claim 4, characterized in that: The side of the guide plate (201) is inclined.

6. The novel variable displacement bucket for a thermal power plant bucket wheel excavator according to claim 5, characterized in that: The side walls of the receiving support frame (301) are all inclined.

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