Double-chain track ball type scraper conveyor

Abstract

The utility model relates to the technical field of scraper conveyors, in particular to a double-chain track ball type scraper conveyor which comprises a middle pipe joint, one end of the middle pipe joint is fixedly connected with a driving box, the interior of the driving box is rotationally connected with a driving chain wheel set, and the other end of the middle pipe joint is fixedly connected with a driven box. A rotatable driven chain wheel set is connected into the driven box in a sliding mode, a self-locking mechanism is arranged on the driven chain wheel set, the driven chain wheel set is in transmission connection with the driving chain wheel set through two closed annular chains, and a plurality of scraping plates are arranged between the two chains at intervals. The ratchet wheel disc is applied to the double-chain track ball type scraper conveyor as a self-locking mechanism, more reliable and safer operation guarantee is provided for the conveyor, and by limiting accidental rotation of the driven chain wheel set, the stability of the conveyor is protected, and the service life of the conveyor is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of scraper conveyor technology, and in particular to a double-chain track ball bearing scraper conveyor. Background Technology

[0002] A scraper conveyor, also known as a chain conveyor or buried scraper conveyor, is a conveying device that uses scraper chains moving within a closed trough to propel materials along the trough.

[0003] During the lifting process of the scraper conveyor, as the tilt angle increases, the gravitational component of the material in the trough gradually increases. The scraper chain needs to overcome greater resistance to propel the material along the trough. When the motor power is insufficient, it cannot provide enough thrust to overcome the gravitational component and friction of the material, resulting in insufficient thrust of the scraper chain. This can lead to chain reversal, affecting production efficiency and potentially causing equipment failure and safety accidents. Summary of the Invention

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a double-chain track ball bearing scraper conveyor.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a double-chain track ball bearing scraper conveyor, including an intermediate tube section. One end of the intermediate tube section is fixedly connected to a drive box, and a drive sprocket assembly is rotatably connected inside the drive box. The other end of the intermediate tube section is fixedly connected to a passive box, and a rotatable passive sprocket assembly is slidably connected inside the passive box. The passive sprocket assembly is provided with a self-locking mechanism. The passive sprocket assembly is connected to the drive sprocket assembly through two closed annular chains. Several scrapers are arranged at intervals between the two chains.

[0006] Preferably, the passive sprocket assembly includes a shaft with two sets of spaced-apart sprockets fixed on it. The sprockets engage with a chain. The left and right inner walls of the passive housing are each provided with two sets of spaced-apart guide plates, and a bearing seat is slidably connected between the two sets of guide plates. The shaft is installed between the two sets of bearing seats, and an arc-shaped frame is connected between the two sets of bearing seats. A nut seat is provided on the outer side of the end wall of the passive housing, and a screw extending into the inner cavity of the passive housing is connected to the nut seat. The inner end of the screw is movably connected to the arc-shaped frame, and a handwheel is provided on the outer end of the screw.

[0007] Preferably, the self-locking mechanism is a ratchet disc, and there are two sets of ratchet discs, which are respectively located on both sides of the rotating shaft. The ratchet disc is sleeved on the rotating shaft, and one end of the ratchet disc is fixedly connected to the corresponding bearing seat.

[0008] Preferably, the ratchet disc includes a disc body and a ratchet located within the disc body. The disc body includes a front cover and a rear cover. The rear cover is fastened to the front cover by multiple sets of fixing bolts. The rotating shaft passes through the front cover, the ratchet, and the rear cover in sequence. The ratchet is fixedly connected to the rotating shaft. One end of the rear cover is provided with a connecting flange, which is fixedly connected to a corresponding bearing seat. A pawl is fitted on the fixing bolt within the disc body, and the pawl engages with the ratchet.

[0009] Preferably, the inner wall of the rear cover is fixed with a spring sheet corresponding to the pawl, and the spring sheet presses the pawl against the ratchet.

[0010] Preferably, the left and right inner walls of the intermediate tube section are each fixed with a U-shaped groove corresponding to the chain, the U-shaped groove extends along the direction of the intermediate tube section, and the chain is embedded in the U-shaped groove.

[0011] Preferably, the U-shaped groove is made of polytetrafluoroethylene.

[0012] After adopting the above technical solution, the beneficial effects of this utility model are:

[0013] The application of ratchet discs as a self-locking mechanism in double-chain track ball scraper conveyors provides more reliable and safer operation for the conveyor. By limiting the accidental rotation of the passive sprocket assembly, it helps protect the stability of the conveyor and extend its service life. Attached Figure Description

[0014] 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 based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the intermediate pipe section;

[0017] Figure 3 This is a schematic diagram of the passive sprocket assembly.

[0018] Figure 4 This is a schematic diagram of the overall structure of the ratchet disc;

[0019] Figure 5 This is a schematic diagram of the internal structure of the ratchet disc.

[0020] Explanation of reference numerals in the attached diagram: 1-Driven gearbox, 2-Intermediate pipe section, 3-Feed inlet, 4-Passive gearbox, 5-Passive sprocket assembly, 6-Chain, 7-Discharge outlet, 8-Driven sprocket assembly, 9-Flange, 10-Scraper, 11-U-groove, 12-Shaft, 13-Sprocket, 14-Bearing seat, 15-Linear slide rail, 16-Arc frame, 17-Screw, 18-Ratchet disc, 19-Guide plate, 20-Front cover, 21-Pawl, 22-Rear cover, 23-Fixing bolt, 24-Connecting flange, 25-Ratchet, 26-Spring plate, 27-Nut seat, 28-End wall, 29-Handwheel. Detailed Implementation

[0021] The features and exemplary embodiments of various aspects of this utility model will now be described in detail. To make the objectives, technical solutions, and advantages of this utility model clearer, the following description, in conjunction with the accompanying drawings and specific embodiments, will provide a further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it. Those skilled in the art will recognize that this utility model can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it.

[0022] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this utility model. It should also be noted in the description of this utility model that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] like Figure 1 As shown, an embodiment of this utility model provides a double-chain track ball bearing scraper conveyor, including an intermediate tube section 2, with a feed inlet 3 at the top of one end of the intermediate tube section 2. A drive unit 1 is fixedly connected to one end of the intermediate tube section 2, and a discharge outlet 7 is provided at the bottom of the drive unit 1. A drive sprocket assembly 8 is rotatably mounted inside the drive unit 1. A drive device, which is driven and connected to the drive sprocket assembly 8, is fixedly mounted on the outer side of the drive unit 1 to provide the necessary power to drive the drive sprocket assembly 8 to rotate. A passive unit 4 is fixedly connected to the other end of the intermediate tube section 2, and a rotatable passive sprocket assembly 5 is slidably connected inside the passive unit 4.

[0024] The driven sprocket assembly 5 is connected to the driving sprocket assembly 8 via two closed loop chains 6. These two chains 6 form a closed loop, passing around the driving sprocket assembly 8 and the driven sprocket assembly 5, thus achieving continuous motion. Between the two chains 6, several scrapers 10 are spaced apart. These scrapers 10 move with the movement of the chains 6 to push materials inside the conveyor.

[0025] like Figure 2 As shown, the intermediate tube section 2 has flanges 9 at both ends for connecting the drive box 1 or the driven box 4. The drive box 1, intermediate tube section 2, and driven box 4 are securely connected together with bolts or other fasteners to form a single conveyor structure. U-shaped grooves 11 corresponding to the chains 6 are fixed to the left and right inner walls of the intermediate tube section 2. The U-shaped grooves 11 extend along the direction of the intermediate tube section 2, and the chains 6 are embedded in the U-shaped grooves 11. This helps maintain the correct position of the chains 6 inside the intermediate tube section 2, preventing them from deviating from the track due to vibration or external forces. At the same time, the U-shaped grooves 11 also provide additional support for the chains 6, increasing the stability and durability of the conveyor. The U-shaped grooves 11 are made of polytetrafluoroethylene (PTFE), reducing the friction between the chains 6 and the groove walls, thereby reducing wear.

[0026] like Figure 3 As shown, the driven sprocket assembly 5 includes a shaft 12, on which two sets of spaced-apart sprockets 13 are fixed, and the sprockets 13 engage with the chain 6. Two sets of spaced-apart guide plates 19 are provided on the left and right inner walls of the driven housing 4, and a bearing seat 14 is slidably connected between the two sets of guide plates 19 via a linear slide rail 15. The shaft 12 is installed between the two sets of bearing seats 14, and an arc-shaped frame 16 connects the two sets of bearing seats 14. A nut seat 27 is provided on the outer side of the end wall 28 of the driven housing 4, and a screw 17 extending into the inner cavity of the driven housing 4 is connected to the nut seat 27. The inner end of the screw 17 is movably connected to the arc-shaped frame 16, and a handwheel 29 is provided on the outer end of the screw 17.

[0027] Rotating the handwheel 29 drives the screw 17 to rotate. The screw 17 matches the thread inside the nut seat 27, allowing the rotation of the screw 17 to be converted into linear motion, which in turn pulls or pushes the arc frame 16. When the arc frame 16 moves, it drives the two sets of bearing seats 14 to move synchronously, thereby changing the position of the driven sprocket assembly 5 inside the driven housing 4. The adjustment of the position of the driven sprocket assembly 5 directly affects the tension of the chain 6. By precisely adjusting the position of the driven sprocket assembly 5, the operator can achieve precise control of the tension of the chain 6 to ensure the smooth operation and high efficiency of the conveyor.

[0028] like Figure 3 -to Figure 5As shown, the passive sprocket assembly 5 is equipped with a self-locking mechanism. Two sets of ratchet discs 18 are installed on either side of the rotating shaft 12, and this symmetrical layout enhances the reliability of the self-locking mechanism. The ratchet disc 18 includes a disc body and a ratchet 25 located within the disc body. The disc body includes a front cover 20 and a rear cover 22, with the rear cover 22 fastened to the front cover 20 via multiple sets of fixing bolts 23. The rotating shaft 12 passes sequentially through the front cover 20, the ratchet 25, and the rear cover 22, with the ratchet 25 fixedly connected to the rotating shaft 12. A connecting flange 24 is provided at one end of the rear cover 22, and the connecting flange 24 is fixedly connected to the corresponding bearing seat 14. A pawl 21 is fitted onto the fixing bolt 23 within the disc body, and the pawl 21 engages with the ratchet 25. Spring plates 26, corresponding one-to-one with the pawl 21, are fixed to the inner wall of the rear cover 22, pressing the pawl 21 against the ratchet 25.

[0029] When the shaft 12 rotates normally, the pawl 21 slides smoothly along the tooth groove of the ratchet 25 without interfering with its rotation. If the shaft 12 attempts to rotate counterclockwise, the pawl 21 will be firmly locked in the tooth groove of the ratchet 25 due to the pressure of the spring plate 26, thus preventing its rotation. This ensures that the driven sprocket assembly 5 remains stable when it does not need to move, effectively preventing rotation caused by accidents or external forces.

[0030] The embodiments described above are not exhaustive, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the invention, enabling those skilled in the art to effectively utilize the invention and its modifications. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. A double chain track ball-type flight conveyor, characterized by: The utility model provides a kind of intermediate pipe section (2), one end of the intermediate pipe section (2) is fixedly connected with driving box (1), the inside rotationally connected with driving sprocket set (8) of driving box (1), the other end of the intermediate pipe section (2) is fixedly connected with passive box (4), the inside slidingly connected with rotatable passive sprocket set (5) of passive box (4), passive sprocket set (5) is provided with self-locking mechanism, passive sprocket set (5) is driven connection with driving sprocket set (8) by two closed loop chains (6), and a plurality of scrapers (10) are arranged at intervals between two chain (6);Passive sprocket set (5) includes shaft (12), two groups of chain wheels (13) are fixed on the shaft (12) and are spaced apart, the chain wheel (13) is engaged with chain (6), the left and right inner walls of passive box (4) are provided with two groups of guide plates (19) and are spaced apart, and the bearing seat (14) is slidingly connected between the two groups of guide plates (19), the shaft (12) is installed between two groups of bearing seat (14), and arc frame (16) is connected between two groups of bearing seat (14), the outer side of the end wall (28) of passive box (4) is provided with nut seat (27), the screw rod (17) that projects into the inner cavity of passive box (4) is connected with nut seat (27), and the inner end of screw rod (17) is movably connected with arc frame (16), and the outer end of screw rod (17) is provided with hand wheel (29).

2. The double-strand rail ball-type scraper conveyor according to claim 1, characterized in that: The self-locking mechanism is ratchet disc (18), two groups of ratchet disc (18) are arranged on the two sides of shaft (12), and the ratchet disc (18) is sleeved on the shaft (12), and one end of the ratchet disc (18) is fixedly connected with the corresponding bearing seat (14).

3. The double-stranded chain track, ball-bearing flight conveyor according to claim 2, characterized in that: The ratchet disc (18) includes disc body and ratchet wheel (25) in the disc body, the disc body includes front cover (20) and rear cover (22), the rear cover (22) is buckled and installed with front cover (20) by a plurality of fixed pins (23), the shaft (12) passes through front cover (20), ratchet wheel (25) and rear cover (22) in sequence, the ratchet wheel (25) is fixedly connected with the shaft (12), one end of the rear cover (22) is provided with connecting flange (24), the connecting flange (24) is fixedly connected with the corresponding bearing seat (14), the fixed pin (23) in the disc body is sleeved with pawl (21), and the pawl (21) is engaged with ratchet wheel (25).

4. The dual track, rail, ball-screw conveyor of claim 2, wherein: The inner wall of the rear cover (22) is fixed with the spring sheet (26) corresponding to the pawl (21), and the spring sheet (26) presses the pawl (21) to the ratchet wheel (25).

5. The dual track rail ball drag conveyor of claim 1, wherein: The left and right inner walls of the intermediate pipe section (2) are fixed with the U-shaped groove (11) corresponding to the chain (6), the U-shaped groove (11) extends along the direction of the intermediate pipe section (2), and the chain (6) is embedded in the U-shaped groove (11).

6. The double chain track, ball-bearing flight conveyor of claim 5, wherein: The material of the U-shaped groove (11) is polytetrafluoroethylene.

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