Novel asphalt regeneration metering scale discharging mechanism

Abstract

The utility model belongs to the technical field of asphalt discharging mechanisms, and relates to a novel asphalt regeneration metering scale discharging mechanism which comprises a door body shell, a left discharging door, a right discharging door, an air cylinder, a crank arm, a shaft sleeve, an air cylinder installation base, a left synchronous gear set, a right synchronous gear set, a gear protection cover and a discharging door shaft. The left discharging door and the right discharging door are installed on the door body shell through the discharging door shaft, the left synchronous gear set and the right synchronous gear set are installed on the discharging door shaft through key connection, and the gear protective cover is installed on the door body shell. Precise synchronization of the two material doors is achieved through gear meshing, and it is guaranteed that the two doors are opened or closed at the same time.

Description

Technical Field

[0001] This utility model belongs to the technical field of asphalt unloading mechanism, specifically relating to a novel asphalt recycling metering scale unloading mechanism. Background Technology

[0002] Asphalt recycling weighing scales are key equipment in asphalt mixing plants for accurate metering of waste asphalt mixtures. The technical performance of the unloading mechanism directly affects the accuracy of the recycling mix proportions and production efficiency. Currently, the unloading mechanism commonly used in the industry is a dual-door independent drive structure.

[0003] Traditional asphalt recycling weighing scales use a dual-gate structure for the unloading gate, with each gate controlled by a cylinder. The two gates are independent of each other. Due to pressure fluctuations, response delays, and mechanical assembly errors in the dual cylinders, the two unloading gates cannot achieve perfectly synchronized operation, making it difficult to open or close synchronously. This easily leads to material jamming and complicated operation. Therefore, a novel unloading mechanism for asphalt recycling weighing scales is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a new type of asphalt recycling weighing scale unloading mechanism. In view of the shortcomings of the prior art, the two unloading gates can be linked to achieve synchronous opening or both closing, preventing material from getting stuck in the gates. The structure is simple, the operation and control are simple, and the installation is convenient.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a novel asphalt recycling weighing scale unloading mechanism, including a gate shell, the gate shell having a square structure, left and right discharge gates being installed on the gate shell via a discharge gate shaft, left and right synchronous gear sets being installed on the discharge gate shaft via a key connection, and a cylinder being installed on the gate shell via a cylinder mounting seat, the cylinder being connected to the left and right discharge gates via a crank arm and a bushing.

[0006] Preferably, the outer shell of the gate is a square structure formed by four connecting plates, and the unloading gate is installed inside and installed on the bucket body connecting plate by bolts to form a sealed structure.

[0007] Preferably, the left and right synchronous gear sets are 1 / 4 gears, which are connected to the unloading gate shaft by a key.

[0008] Preferably, the bottom of the door shell is provided with a wear-resistant liner made of NM400 wear-resistant steel with a thickness of 5-8mm, which is connected to the door shell by countersunk bolts.

[0009] Preferably, the cylinder is a double-acting cylinder with a diameter of 80-100mm and a stroke of 150-200mm. The piston rod end of the cylinder is provided with a universal joint, and the universal joint is provided with a pin.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] 1. This utility model utilizes gear meshing to achieve precise synchronization of two material gates, ensuring that both gates open or close simultaneously;

[0012] 2. This utility model allows two unloading gates to be linked, enabling them to open synchronously or both to close, preventing material from getting stuck in the gates. It has a simple structure, is easy to operate and control, and is convenient to install. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 A side view of a novel asphalt recycling weighing scale unloading mechanism according to one embodiment;

[0015] Figure 2 This is a front view of a novel asphalt recycling weighing scale unloading mechanism according to one embodiment;

[0016] In the above figures, 1. Door shell, 2. Left and right feeding doors, 3. Cylinder, 4. Crank arm and bushing, 5. Cylinder mounting base, 6. Left and right synchronous gear set, 7. Unloading door shaft. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0019] Example 1, such as Figure 1-2 As shown, a novel asphalt recycling weighing scale unloading mechanism includes a gate shell 1, which serves as a support frame for the unloading mechanism, bearing other components and preventing asphalt leakage. The gate shell 1 has a square structure, and left and right discharge gates 2 are installed on the gate shell 1 via a discharge gate shaft 7. The discharge gate shaft 7 serves as the rotation center shaft of the left and right discharge gates 2, transmitting power from the cylinder 3 to the left and right discharge gates 2, ensuring precise power transmission.

[0020] A left and right synchronous gear set 6 is installed on the unloading gate shaft 7 via a key connection. The meshing of the left and right synchronous gear sets 6 forces the left and right unloading gates 2 to move synchronously. The gear meshing angle is reasonably designed to eliminate the jamming problem caused by the asynchronous operation of the traditional dual cylinders 3, replacing the independent control of the traditional dual cylinders 3, reducing costs and reducing failure points. A cylinder 3 is installed on the gate shell 1 via a cylinder mounting seat 5. The cylinder 3 is connected to the left and right unloading gates 2 via a crank arm and bushing 4. The cylinder 3 serves as a power source, converting linear motion into rotational motion of the unloading gate shaft 7 through the crank arm and bushing 4. The left and right unloading gates 2 control the unloading flow of asphalt through opening and closing actions. The synchronous gear set achieves complete synchronization of the left and right gates, avoiding jamming on one side.

[0021] The specific design of the aforementioned key components will be discussed in detail below:

[0022] The outer shell 1 of the gate is a square structure formed by four connecting plates. The unloading gate is installed inside and bolted to the bucket body connecting plate to form a sealed structure. The four rectangular steel plates are preferably made of Q235 carbon steel and are welded or bolted together to form a square frame. The top and bottom plates have shaft holes for installing the unloading gate shaft 7, and the side plates have pre-reserved fixing interfaces for the cylinder mounting seat 5. The frame of the outer shell 1 is fixed to the outer bucket body connecting plate with bolts, and a profile sealing strip, preferably EPDM rubber strip, is embedded at the joints to form a leak-proof structure. The inner cavity size of the outer shell 1 is slightly larger than the unfolded area of ​​the unloading gate to ensure that the unloading gate opens and closes without interference.

[0023] The left and right synchronous gear sets 6 are quarter-gears, connected to the unloading gate shaft 7 via a key. The gears are quarter-circular arc gears (90° arc length), with a module of 4-6 and 20-25 teeth. They are made of 40Cr tempered steel and surface-hardened to improve wear resistance. The gears are fixed to the unloading gate shaft 7 via a flat key, and the meshing angle of the left and right gears is strictly limited to 90° to ensure that the left and right unloading gates 2 open and close synchronously to the fully open (90°) or fully closed (0°) position. The quarter-gears occupy little space, making them suitable for installation within the limited space of the gate housing 1. This avoids the interference problems of traditional full gears and replaces the independent control of the traditional dual cylinders 3 with gear meshing, eliminating the asynchronous jamming phenomenon of the left and right gates caused by the difference in cylinder 3 response time.

[0024] The bottom of the gate shell 1 is equipped with a wear-resistant liner plate made of NM400 wear-resistant steel, with a thickness of 5-8mm, which is connected to the gate shell 1 by countersunk bolts. It is fixed by 8-12 evenly distributed M10 countersunk bolts, with the bolt heads embedded in the surface of the liner plate to ensure a smooth inner wall of the unloading channel. The NM400 wear-resistant steel significantly extends the liner plate's lifespan, avoiding the problem of easy wear and perforation of the shell without a dedicated liner plate in traditional structures. The countersunk bolt connection facilitates quick liner plate replacement, reducing downtime for maintenance.

[0025] The cylinder 3 is a double-acting cylinder with a diameter of 80-100mm and a stroke of 150-200mm. The piston rod end of the cylinder 3 is equipped with a universal joint with a pin. The piston rod end of the cylinder 3 is connected to the universal joint and is connected to the crank arm and bushing 4 through the pin.

[0026] Working principle: The unloading mechanism of the asphalt recycling weighing scale at the asphalt plant uses left and right synchronous gear sets 6 to achieve synchronous operation of the left and right discharge gates 2. The overall structure consists of a gate shell 1 and four connecting plates assembled together. After the scale body completes the weighing, the cylinder 3 receives the command and starts to move, driving the left and right discharge gates 2 through the crank arm and bushing 4. During the movement, the left and right synchronous gear sets 6 installed on the discharge gate shaft 7 operate simultaneously, and the two left and right synchronous gear sets 6 begin to mesh, realizing the synchronous operation of the left and right discharge gates 2.

[0027] Application scenarios: It is particularly suitable for high-frequency unloading, unloading 30-50 times per hour in asphalt recycling production lines and high-viscosity modified asphalt at temperatures of 160-180℃. Through gear synchronization and wear-resistant design, the overall equipment failure rate can be reduced from 15% in traditional solutions to below 3%.

[0028] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A novel asphalt recycling weighing scale unloading mechanism, characterized in that, The device includes a door shell, which is a square structure. Left and right discharge doors are mounted on the door shell via a discharge door hinge. Left and right synchronous gear sets are mounted on the discharge door hinge via a key connection. A cylinder is mounted on the door shell via a cylinder mounting seat. The cylinder is connected to the left and right discharge doors via a crank arm and a bushing.

2. The novel asphalt recycling weighing scale unloading mechanism according to claim 1, characterized in that, The outer shell of the gate is a square structure formed by four connecting plates. The unloading gate is installed inside and is bolted to the connecting plate of the bucket body to form a sealed structure.

3. The novel asphalt recycling weighing scale unloading mechanism according to claim 1, characterized in that, The left and right synchronous gear sets are 1 / 4 gears, which are connected to the unloading gate shaft by a key.

4. The novel asphalt recycling weighing scale unloading mechanism according to claim 1, characterized in that, The bottom of the door shell is equipped with a wear-resistant liner made of NM400 wear-resistant steel, with a thickness of 5-8mm, which is connected to the door shell by countersunk bolts.

5. The novel asphalt recycling weighing scale unloading mechanism according to claim 1, characterized in that, The cylinder is a double-acting cylinder with a diameter of 80-100mm and a stroke of 150-200mm. The piston rod end of the cylinder is equipped with a universal joint, and the universal joint is equipped with a pin.

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