Scraper conveyor with overload protection

Abstract

The utility model discloses a kind of scraper conveyors with overload protection, including conveying component, the circular friction block is movably connected with the side surface of circular connecting disc, the third sprocket is movably connected with the side surface of circular friction block, shearing pin is movably penetrated between the third sprocket and circular friction block and circular connecting disc, the utility model relates to scraper conveyor technical field;The scraper conveyor with overload protection, by setting the cooperation structure of circular connecting disc, circular friction block, third sprocket and shearing pin, form double overload protection mechanism.When equipment appears overload, first, preliminary overload buffer is realized by the relative sliding between circular connecting disc and circular friction block, if overload continues and reaches set threshold, shearing pin will break, completely cut off the power connection of motor and subsequent transmission component, effectively avoid motor and conveying component damage due to continuous overload, significantly improve the safety and reliability of equipment operation.

Description

Technical Field

[0001] This utility model relates to the field of scraper conveyor technology, specifically a scraper conveyor with overload protection. Background Technology

[0002] Overload-protected scraper conveyors are conveying equipment that integrates overload protection mechanisms into traditional scraper conveyors. They use a scraper chain as their core, with a motor-driven sprocket that rotates the scrapers in a trough to transport materials. Simultaneously, they are equipped with mechanical or electrical protection devices to address overload conditions such as material blockage and jamming. These devices monitor abnormal signals such as current and torque, automatically stopping and slowing down when the overload reaches a threshold, preventing motor burnout, chain breakage, and other malfunctions. This ensures safe equipment operation, reduces production interruptions, and improves reliability, making them widely used in mining, metallurgy, and other industries.

[0003] The "scraper conveyor" disclosed in patent publication number "CN212638962U" includes a machine body, a feed inlet at the top of the machine body, a discharge outlet at the bottom of the machine body, rotating rollers at both ends of the machine body, the rotating rollers being set inside the cavity of the machine body, a motor for driving the rotating rollers being installed on the machine body, a conveyor belt connecting the two rotating rollers, the conveyor belt rotating along the feed inlet toward the discharge outlet, a number of scrapers being provided along the length of the conveyor belt, the scrapers being evenly distributed on the surface of the conveyor belt, and a cleaning mechanism for cleaning the scrapers being provided at the end of the machine body away from the discharge outlet.

[0004] The aforementioned patent can remove residual material powder and prevent the accumulation and spoilage of material residue from affecting product quality. However, if the scraper gets stuck or material accumulates during the conveying process, the load will increase sharply, causing the motor current to surge and continuous overload to overheat the motor windings. This can burn out the motor or even cause a short circuit or fire. In addition, the cleaning mechanisms are all located inside the machine body and have a compact structure. When the parts are damaged or need cleaning, the cover plate must be removed to operate, which increases the difficulty of maintenance and downtime.

[0005] Therefore, this utility model provides a scraper conveyor with overload protection to solve the above problems. Utility Model Content

[0006] In view of the shortcomings of the existing technology, this utility model provides a scraper conveyor with overload protection, which solves the above problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a scraper conveyor with overload protection, comprising a conveying assembly, the conveying assembly including a conveyor body, an upper mounting plate fixedly connected to the top of the conveyor body, a mounting block fixedly connected to the upper surface of the upper mounting plate, a motor fixedly connected to the side surface of the mounting block, a circular connecting disc fixedly connected to the output shaft of the motor, a circular friction block movably connected to the side surface of the circular connecting disc, a third sprocket movably connected to the side surface of the circular friction block, and a shearing pin movably communicating between the third sprocket, the circular friction block, and the circular connecting disc.

[0008] Furthermore, both ends of the shear pin are threaded, and nuts are screwed onto the threaded side surfaces. A stabilizing plate is movably connected to the output side surface of the motor, and the bottom of the stabilizing plate is fixedly connected to the upper surface of the upper mounting plate.

[0009] By adopting the above technical solution, a dual overload protection mechanism is formed through the cooperative structure of a circular connecting disc, a circular friction block, a third sprocket, and a shear pin. When the equipment is overloaded, the relative sliding between the circular connecting disc and the circular friction block first achieves initial overload buffering. If the overload continues and reaches a set threshold, the shear pin will break, completely cutting off the power connection between the motor and subsequent transmission components. This effectively prevents damage to the motor and conveying components due to continuous overload, significantly improving the safety and reliability of equipment operation.

[0010] Furthermore, the third sprocket is engaged with a second chain, and the other side of the second chain is engaged with a second sprocket. A drive shaft is fixedly connected to the side surface of the second sprocket, and the side surface of the drive shaft movably extends through both sides of the conveyor body.

[0011] By adopting the above technical solution, the motor power is stably transmitted to the drive shaft through the meshing transmission of the third sprocket, the second chain and the second sprocket. The transmission efficiency is high and the transmission ratio is stable, ensuring the smooth operation of the conveying components. The drive shaft is movably connected to both sides of the conveyor body, and the installation structure is stable, which can effectively withstand the load force during the conveying process and improve the overall structural strength of the equipment.

[0012] Furthermore, there are two drive shafts in corresponding positions. A driven roller is fixedly connected to the side surface of each drive shaft. A first sprocket is fixedly connected to both ends of each driven roller. A conveyor chain is engaged with each of the two first sprockets. There are two conveyor chains in corresponding positions. A strip scraper is fixedly connected between the two conveyor chains.

[0013] Using the above technical solution, the driven rollers on the two drive shafts cooperate with the conveyor chain through the first sprocket to drive the strip scraper to move and realize material conveying. The setting of the double conveyor chain makes the strip scraper evenly stressed and more stable in operation, avoiding the uneven load or jamming that may occur when a single chain is driven. The strip scraper can efficiently scrape and convey materials under the drive of the conveyor chain, improving the conveying efficiency.

[0014] Furthermore, a protective component is provided on the outer side of the conveyor body. The protective component includes two irregular mounting plates, which are positioned correspondingly. The inner surfaces of the two irregular mounting plates are fixedly connected to the side surface of the conveyor body.

[0015] Using the above technical solution, two irregular mounting plates at corresponding positions are fixed to the side surface of the conveyor body, providing a stable mounting base for the protective components. Its structural design can adapt to the shape characteristics of the conveyor body, ensuring the tightness and stability of the connection between the protective components and the conveying components.

[0016] Furthermore, each of the two irregular mounting plates has a mounting groove on its upper surface, and a detachable protective plate is movably connected to the inner wall of each of the two mounting grooves. A vertical mounting plate is fixedly connected between the two irregular mounting plates, and a PLC control panel is fixedly connected to the outer surface of the vertical mounting plate.

[0017] By adopting the above technical solution, the movable connection between the detachable protective plate and the mounting groove and the irregular mounting plate facilitates disassembly and assembly, avoiding the need for complex disassembly of the cover plate to repair the interior when the parts are damaged or need cleaning. This not only protects the internal transmission components of the equipment, but also facilitates maintenance and repair, improving the ease of operation of the equipment.

[0018] Furthermore, the irregular mounting plate is fixedly connected to the rear end with two mounting strips, which are positioned correspondingly, and side protective plates are fixedly connected to the upper surface of each mounting strip.

[0019] By adopting the above technical solution, the side protective plates on the mounting strip can protect the sides and rear end of the conveyor body, prevent operators from accidentally touching the operating parts, and block the splashing that may occur during material conveying, thereby further improving the safety of equipment operation.

[0020] Beneficial effects

[0021] This invention provides a scraper conveyor with overload protection. Compared with the prior art, it has the following advantages:

[0022] 1. This scraper conveyor with overload protection employs a dual overload protection mechanism through a combination of a circular connecting disc, a circular friction block, a third sprocket, and a shear pin. When an overload occurs, initial overload buffering is achieved through the relative sliding between the circular connecting disc and the circular friction block. If the overload persists and reaches a set threshold, the shear pin will break, completely severing the power connection between the motor and subsequent transmission components. This effectively prevents damage to the motor and conveying components due to continuous overload, significantly improving the safety and reliability of the equipment operation.

[0023] 2. This scraper conveyor with overload protection features a movable connection between a detachable protective plate and an irregular mounting plate via a mounting groove. This facilitates disassembly and assembly, avoiding the need for complex disassembly of the cover plate to repair internal components when they are damaged or require cleaning. It not only protects the internal transmission components of the equipment but also facilitates maintenance and repair, improving the ease of operation of the equipment. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a perspective view of the external structure of this utility model;

[0026] Figure 2 This is a top view of the structure of this utility model;

[0027] Figure 3 This is the utility model Figure 2 Enlarged view of the structure at point A in the image;

[0028] Figure 4 This is a partial structural side view of this utility model.

[0029] In the diagram: 1. Conveying assembly; 101. Conveying body; 102. Driven roller; 103. First sprocket; 104. Conveying chain; 105. Second sprocket; 106. Second chain; 107. Third sprocket; 108. Shear pin; 109. Circular friction block; 110. Circular connecting disc; 111. Thread; 112. Nut; 113. Motor; 114. Stabilizing plate; 115. Mounting block; 116. Upper mounting plate; 117. Drive shaft; 118. Strip scraper; 2. Protective assembly; 201. Irregular mounting plate; 202. Mounting groove; 203. Vertical mounting plate; 204. PLC control panel; 205. Removable protective plate; 206. Mounting strip; 207. Side protective plate. Detailed Implementation

[0030] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0031] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0032] Reference Figures 1 to 4 This application provides a scraper conveyor with overload protection, including a conveying assembly 1. The conveying assembly 1 includes a conveyor body 101. An upper mounting plate 116 is fixedly connected to the top of the conveyor body 101. A mounting block 115 is fixedly connected to the upper surface of the upper mounting plate 116. A motor 113 is fixedly connected to the side surface of the mounting block 115. A circular connecting disc 110 is fixedly connected to the output shaft of the motor 113. A circular friction block 109 is movably connected to the side surface of the circular connecting disc 110. A third sprocket 107 is movably connected to the side surface of the circular friction block 109. A shearing pin 108 movably passes through the third sprocket 107, the circular friction block 109, and the circular connecting disc 110. Threads 111 are provided on both ends of the shearing pin 108. Nuts 112 are screwed onto the side surface of the threaded pin 111. A stabilizing plate 114 movably passes through the output end side surface of the motor 113. The bottom of the stabilizing plate 114 is fixedly connected to the upper surface of the upper mounting plate 116.

[0033] In this embodiment, the motor 113 drives the circular connecting disc 110 to rotate via the output shaft. The circular connecting disc 110 transmits power to the third sprocket 107 via the circular friction block 109. The shear pin 108 passes through the third sprocket 107, the circular friction block 109, and the circular connecting disc 110 to achieve synchronous transmission among the three. When the equipment is overloaded, the circular connecting disc 110 and the circular friction block 109 first slide relative to each other for initial buffering. If the overload force exceeds the bearing limit of the shear pin 108, the shear pin 108 breaks to cut off the power transmission. The thread 111 and the nut 112 cooperate to fix and disassemble the shear pin 108. The stabilizing plate 114 supports the output end of the motor 113 to ensure transmission stability. The upper mounting plate 116 provides a fixed foundation for the mounting block 115 and the stabilizing plate 114. The mounting block 115 realizes the fixed installation of the motor 113.

[0034] Reference Figures 1 to 4 In one aspect of this embodiment, a third sprocket 107 engages with a second chain 106, and a second sprocket 105 engages with the other side of the second chain 106. A drive shaft 117 is fixedly connected to the side surface of the second sprocket 105, and the side surface of the drive shaft 117 movably extends through both sides of the conveyor body 101.

[0035] In this embodiment, the third sprocket 107 rotates under the drive of the motor 113. Through meshing with the second chain 106, it drives the second sprocket 105 to rotate synchronously. The second sprocket 105 transmits power to the drive shaft 117. The drive shaft 117 achieves stable rotation through the mounting structure that runs through both sides of the conveyor body 101, thereby transmitting the power of the motor 113 to the subsequent conveying components.

[0036] Reference Figures 1 to 4 In one aspect of this embodiment, there are two drive shafts 117 in corresponding positions. A driven roller 102 is fixedly connected to the side surface of each of the two drive shafts 117. A first sprocket 103 is fixedly connected to both ends of each of the two driven rollers 102. A conveying chain 104 is meshed with each of the two first sprockets 103. There are two conveying chains 104 in corresponding positions. A strip scraper 118 is fixedly connected between the two conveying chains 104.

[0037] In this embodiment, the two drive shafts 117 rotate synchronously under the action of power, driving the driven roller 102 fixed on them to rotate. The first sprockets 103 at both ends of the driven roller 102 rotate with the driven roller 102, and drive the conveying chain 104 to circulate through meshing with the conveying chain 104. The two conveying chains 104 drive the strip scraper 118 fixed between them to move synchronously, realizing the material conveying operation.

[0038] Reference Figures 1 to 4 In one aspect of this embodiment, a protective component 2 is provided on the outer side of the conveyor body 101. The protective component 2 includes two irregular mounting plates 201, which are positioned in corresponding positions. The inner surfaces of the two irregular mounting plates 201 are fixedly connected to the side surface of the conveyor body 101.

[0039] In this embodiment, two irregular mounting plates 201 at corresponding positions are fixedly connected to the side surface of the conveyor body 101 through their inner surfaces to form the mounting base of the protective component 2. Its structure is adapted to the shape of the conveyor body 101, providing stable support for subsequent protective components and realizing the protective function for key parts of the conveyor component 1.

[0040] Reference Figures 1 to 4In one aspect of this embodiment, mounting grooves 202 are provided on the upper surfaces of the two irregular mounting plates 201, and detachable protective plates 205 are movably connected to the inner walls of the two mounting grooves 202. A vertical mounting plate 203 is fixedly connected between the two irregular mounting plates 201, and a PLC control panel 204 is fixedly connected to the outer surface of the vertical mounting plate 203.

[0041] In this embodiment, the detachable protective plate 205 covers the equipment transmission components through a movable connection with the mounting groove 202, providing safety protection and facilitating disassembly and maintenance; the vertical mounting plate 203 is fixed between two irregular mounting plates 201 to form a mounting carrier, and the PLC control panel 204 is fixed on the vertical mounting plate 203 to realize the setting of equipment operating parameters and the issuance of control commands.

[0042] Reference Figures 1 to 4 In one aspect of this embodiment, an irregular mounting plate 201 is fixedly connected to a mounting strip 206 at its rear end. There are two mounting strips 206 in total, and their positions correspond. A side protection plate 207 is fixedly connected to the upper surface of each of the two mounting strips 206.

[0043] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0044] Working principle: When the equipment starts, the motor 113 drives the circular connecting disc 110 to rotate through the output shaft. The circular connecting disc 110 transmits power to the third sprocket 107 through the circular friction block 109. The shearing pin 108 passes through the three to achieve synchronous transmission. The stabilizing plate 114 ensures the transmission stability of the output end of the motor 113. The third sprocket 107 drives the second sprocket 105 to rotate through meshing with the second chain 106, which in turn drives the transmission shaft 117 to rotate. When the two transmission shafts 117 rotate synchronously, they drive the driven roller 102 and the first sprockets 103 at both ends to rotate. The first sprockets 103 drive the conveyor chain 104 to circulate through meshing, so that the strip scraper 118 fixed between the two conveyor chains 104 moves with the chain to realize material conveying. If an overload occurs during operation, the circular connecting disc 110 and the circular friction block 109 will first slide relative to each other for initial buffering. When the overload force exceeds the threshold, the shear pin 108 will break, cutting off the power transmission to protect the equipment. The thread 111 and nut 112 cooperate to facilitate the disassembly and replacement of the shear pin 108. In the protective assembly 2, the irregular mounting plate 201 provides a mounting base for the protective components. The removable protective plate 205 achieves protection and maintenance convenience through the mounting groove 202. The PLC control panel 204 is installed through the vertical mounting plate 203 to realize equipment operation. The side protective plate 207 supported by the mounting strip 206 forms protection for the sides and rear of the machine body, ensuring the safe and stable operation of the equipment as a whole.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A scraper conveyor with overload protection, comprising a conveying assembly (1), characterized in that: The conveying assembly (1) includes a conveyor body (101), an upper mounting plate (116) is fixedly connected to the top of the conveyor body (101), a mounting block (115) is fixedly connected to the upper surface of the upper mounting plate (116), a motor (113) is fixedly connected to the side surface of the mounting block (115), a circular connecting disc (110) is fixedly connected to the output shaft of the motor (113), a circular friction block (109) is movably connected to the side surface of the circular connecting disc (110), a third sprocket (107) is movably connected to the side surface of the circular friction block (109), and a shear pin (108) movably passes between the third sprocket (107), the circular friction block (109), and the circular connecting disc (110).

2. A scraper conveyor with overload protection according to claim 1, characterized in that: The shear pin (108) has threads (111) on both sides, and nuts (112) are screwed onto the threaded (111) side surface. A stabilizing plate (114) is movably connected to the output side surface of the motor (113), and the bottom of the stabilizing plate (114) is fixedly connected to the upper surface of the upper mounting plate (116).

3. A scraper conveyor with overload protection according to claim 1, characterized in that: The third sprocket (107) is engaged with the second chain (106), and the second chain (106) is engaged with the second sprocket (105) on the other side. A drive shaft (117) is fixedly connected to the side surface of the second sprocket (105), and the side surface of the drive shaft (117) is movably connected to both sides of the conveyor body (101).

4. A scraper conveyor with overload protection according to claim 3, characterized in that: There are two drive shafts (117) in corresponding positions. A driven roller (102) is fixedly connected to the side surface of each drive shaft (117). A first sprocket (103) is fixedly connected to both ends of each driven roller (102). A conveying chain (104) is meshed with each of the two first sprockets (103). There are two conveying chains (104) in corresponding positions. A strip scraper (118) is fixedly connected between the two conveying chains (104).

5. A scraper conveyor with overload protection according to claim 1, characterized in that: A protective component (2) is provided on the outside of the conveyor body (101). The protective component (2) includes an irregular mounting plate (201). There are two irregular mounting plates (201) and their positions correspond. The inner surfaces of the two irregular mounting plates (201) are fixedly connected to the side surface of the conveyor body (101).

6. A scraper conveyor with overload protection according to claim 5, characterized in that: The upper surfaces of the two irregular mounting plates (201) are provided with mounting grooves (202), and the inner walls of the two mounting grooves (202) are movably connected with detachable protective plates (205). A vertical mounting plate (203) is fixedly connected between the two irregular mounting plates (201), and a PLC control panel (204) is fixedly connected to the outer surface of the vertical mounting plate (203).

7. A scraper conveyor with overload protection according to claim 5, characterized in that: The irregular mounting plate (201) is fixedly connected to the rear end of the mounting strip (206). There are two mounting strips (206) and their positions correspond. The upper surfaces of the two mounting strips (206) are fixedly connected to side protection plates (207).

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