Double-loop hybrid drive conveyor tail

Abstract

The invention discloses a double-loop hybrid drive conveyor tail, relates to the technical field of conveying machinery, and provides a double-loop hybrid drive conveyor tail aiming at the technical defects of large single drive starting impact, tensioning lag and fault shutdown of a long-distance heavy-load belt conveyor tail. The device structurally comprises a main body, a roller, a left set of independent transmission link and a right set of independent transmission link, wherein a first loop on the left side comprises a first driving machine, a second transmission belt, an air cylinder, a first transmission belt and a rolling output shaft, and a second loop on the right side comprises a second driving machine, a driving gear, a driven gear, a third transmission belt and the roller. The two loops can be connected in parallel or output in a switching mode, and smooth starting, constant-tension operation and drive redundancy are achieved with the assistance of air cylinder torque buffering and dynamic tensioning.

Description

Technical Field

[0001] The invention relates to the technical field of conveying machinery, in particular to a conveyor tail with a dual-circuit hybrid drive. Background Art

[0002] Belt conveyors are widely used in industries such as mining, ports, and metallurgy due to their high continuous operation efficiency and long conveying distances. The tail gear performs key functions such as return guide, tensioning, and auxiliary drive. Existing conveyors utilize a single motor and reducer drive or a purely hydraulic tensioning mode. While these systems offer simple operating logic and compact structure, they struggle to achieve both efficient drive and stable tensioning in heavy-load conveying applications with fluctuating operating conditions.

[0003] Traditional single-motor drive systems often experience high shock, belt slippage, and instantaneous motor overload during the low-speed, high-torque startup phase. Furthermore, they rely on mechanical tensioning or screw tensioning mechanisms for tension compensation, resulting in delayed adjustment response and an inability to suppress conveyor belt deviation and tension fluctuations in real time. On the other hand, while purely hydraulic drive solutions offer high torque output capabilities, they suffer from high hydraulic system energy consumption, a high risk of leakage, and high maintenance costs, making them difficult to meet energy-saving and environmental protection requirements. Most tail conveyors have a single power train structure. Failure of the core drive components necessitates shutdown and maintenance of the entire conveyor line, lacking the necessary redundancy. Tensioning control relies on open-loop or low-precision closed-loop strategies, making it impossible to accurately compensate for real-time load changes. This leads to premature wear of the conveyor belt, uneven force on the rollers, and reduced system reliability. Summary of the Invention

[0004] The main purpose of the present invention is to provide a dual-circuit hybrid driven conveyor tail, which can effectively solve the problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows: a dual-circuit hybrid drive conveyor tail, wherein a plurality of rollers are provided above the main body at intervals along the conveying direction, a rolling output shaft is fixed to the left end of the roller, the rolling output shaft is synchronously connected to a first drive shaft installed on the left side of the main body through a first transmission belt, and the first drive shaft is coaxially fixedly connected to a cylinder provided above the main body; The cylinder is connected to the first driving machine installed on the outside of the main body through a second transmission belt arranged on the outside of the main body, and the first driving machine, the second transmission belt, the cylinder, the first driving shaft, the first transmission belt and the rolling output shaft together constitute a first driving circuit; A second driving machine is provided below the main body, and the output end of the second driving machine is coaxially connected to the second driving shaft. A driving gear is fixed to the end of the second driving shaft. The driving gear is meshed and connected with a driven gear installed below the main body. The driven gear is connected to the right end of the roller through a third transmission belt. The second driving machine, the second driving shaft, the driving gear, the driven gear, the third transmission belt and the roller together constitute a second driving circuit; A rotating mechanism, a connecting rod and a piston are sequentially arranged inside the cylinder from top to bottom, and both sides of the piston are connected to an external air path through an intake valve and an exhaust valve respectively.

[0006] Furthermore, both ends of the rolling output shaft are supported in bearing seats mounted on the side panels of the main body via 6204 deep groove ball bearings, and the bearing seats are fixed to the side panels via four M12×35 hexagon socket bolts.

[0007] Furthermore, the first transmission belt and the second transmission belt are both HTD-5M synchronous toothed belts, and the corresponding pulleys have 28 teeth and 45 teeth respectively. The pulleys are detachably connected to their respective shafts through a 10mm×8mm flat key.

[0008] Furthermore, the rotating mechanism is a double eccentric crank disc structure, and the double eccentric crank disc is coaxially fixed to the end of the first drive shaft by two steel eccentric plates with a thickness of 8 mm and a locating pin with a diameter of 6 mm.

[0009] Furthermore, the driving gear and the driven gear are involute spur gears with a module of 2.5 and a pressure angle of 20°. The driving gear has 24 teeth and the driven gear has 48 teeth. The two are detachably connected to the corresponding shaft ends through six evenly distributed M6 countersunk screws.

[0010] Furthermore, the first driving motor and the second driving motor are respectively mounted on two 10 mm thick mounting plates welded on the bottom of the main body, and each mounting plate is fixed to the foundation through four 14.5 mm diameter through holes and 14 mm diameter anchor bolts.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The present invention constructs a dual-circuit hybrid drive architecture of "electric drive main circuit and buffer boost circuit" by arranging a motor reduction unit and a gear belt cylinder coordination unit on both sides of the tail of the aircraft. During the startup phase, the buffer boost circuit can first provide large torque, flexibly absorb impact and perform real-time tensioning, and then smoothly switch to the normal operation of the high-efficiency electric drive main circuit, thereby reducing problems such as belt slippage, instantaneous motor overload and tensioning hysteresis. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ; Figure 3 This is an enlarged view of part A of the present invention; Figure 4 Schematic diagram of the internal structure of the cylinder of the present invention.

[0013] In the figure: 1. Main body; 2. Roller; 3. Rolling output shaft; 4. First drive shaft; 5. First transmission belt; 6. Cylinder; 601. Rotating mechanism; 602. Connecting rod; 603. Piston; 604. Intake valve; 605. Exhaust valve; 7. Second transmission belt; 8. First driving motor; 9. Second driving motor; 10. Second drive shaft; 11. Driving gear; 12. Driven gear; 13. Third transmission belt. DETAILED DESCRIPTION

[0014] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is intended only to enable those skilled in the art to better understand and implement the subject matter described herein, and is not intended to limit the scope of protection, applicability, or examples set forth in the claims. The functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the present specification. Various examples may omit, replace, or add various processes or components as needed. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described relative to some examples may also be combined in other examples.

[0015] As used herein, the term "including" and its variations are open terms meaning "including but not limited to". The term "based on" means "based at least in part on". The terms "one embodiment" and "an embodiment" mean "at least one embodiment". The term "another embodiment" means "at least one other embodiment". The terms "first", "second", etc. may refer to different or the same objects. Other definitions may be included below, whether explicit or implicit. Unless the context clearly indicates otherwise, the definition of a term is consistent throughout the specification. Example

[0016] See also Figure 1-4 , the present invention provides a technical solution: A dual-circuit hybrid drive conveyor tail, wherein a plurality of rollers 2 are provided above the main body 1 at intervals along the conveying direction. A rolling output shaft 3 is fixed to the left end of each roller 2. The rolling output shaft 3 is synchronously connected to a first drive shaft 4 installed on the left side of the main body 1 via a first transmission belt 5. The first drive shaft 4 is coaxially fixedly connected to a cylinder 6 provided above the main body 1. The cylinder 6 is connected to the first driving machine 8 installed on the outside of the main body 1 through a second transmission belt 7 provided on the outside of the main body 1. The first driving machine 8, the second transmission belt 7, the cylinder 6, the first driving shaft 4, the first transmission belt 5 and the rolling output shaft 3 together constitute a first driving circuit; A second driving machine 9 is provided below the main body 1. The output end of the second driving machine 9 is coaxially connected to the second driving shaft 10. A driving gear 11 is fixed to the end of the second driving shaft 10. The driving gear 11 is meshed and connected with a driven gear 12 installed below the main body 1. The driven gear 12 is connected to the right end of the roller 2 through a third transmission belt 13. The second driving machine 9, the second driving shaft 10, the driving gear 11, the driven gear 12, the third transmission belt 13 and the roller 2 together constitute a second driving circuit. The cylinder 6 includes a rotating mechanism 601 , a connecting rod 602 and a piston 603 arranged in sequence from top to bottom. Both sides of the piston 603 are connected to an external air path through an intake valve 604 and an exhaust valve 605 , respectively.

[0017] like Figure 1 As shown, the device of this embodiment includes a roller, a rolling output shaft, a first drive motor, and other components. One side of the roller is connected to a first transmission belt via the rolling output shaft, the other end of which is connected to a first transmission shaft coaxially arranged with the roller. This first transmission shaft is connected to a coaxially arranged cylinder, which is in turn connected to the first drive motor via a second transmission belt. Therefore, after the first drive motor is started, it sequentially drives the cylinder to rotate via the second transmission belt. The coaxially connected first transmission shaft also receives rotational power, which is then transferred to the rolling output shaft via the first transmission belt, thereby driving the roller to rotate. The spatial relationship of these components is as follows: the first drive motor is typically located at one end of the device, with the second transmission belt connecting its drive wheel to the input end of the cylinder; the cylinder is coaxially arranged with the first transmission shaft, which is connected to the roller's rolling output shaft via the first transmission belt. This structure allows the power generated by the first drive motor to be transmitted to the roller via the cylinder, achieving the roller's rotational motion.

[0018] like Figure 4As shown, the internal structure of the cylinder is similar to that of an engine cylinder, with an intake valve and an exhaust valve provided on the wall, and fixed to the first transmission shaft by bearings or axial supports. Components such as an eccentric cam, a connecting rod and a piston are provided in the cylinder. When the cylinder rotates with the first driving engine, the cam drives the piston to perform linear reciprocating motion through the connecting rod, thereby realizing the process of gas suction and exhaust. Specifically, when the piston reciprocates in the cylinder cavity, it inhales external gas through the intake valve and discharges the gas through the exhaust valve, completing an intake and exhaust cycle. The linkage principle of the above-mentioned cylinder and connecting rod mechanism ensures that the entire device can compress or transport the medium while rotating the drive roller. The cylinder drive mechanism needs to be used in conjunction with a matching air supply system during operation, but it is not shown in the figure in the embodiment, and technicians can design it according to their needs. Example

[0019] This embodiment adopts the second driving mode: a second driving machine is provided on the other side of the device, and its output shaft is connected to the second driving shaft through a shaft coupling. A driving gear is fixed on the outside of the second driving shaft, and the driving gear is engaged with the driven gear arranged on the roller driving shaft. The driven gear is connected to the rolling output shaft of the roller through a third transmission belt. When the second driving machine is working, it drives the second driving shaft to rotate, causing the driving gear to rotate. The driving gear drives the driven gear to rotate through engagement, and then transmits the torque to the rolling output shaft through the third transmission belt, thereby driving the roller to rotate. Compared with the cylinder drive of the first embodiment, this gear transmission scheme has a simple and direct structure. It is low-cost and highly reliable in application scenarios where only the roller needs to be rotated without the need for additional compressed air. It should be noted that the driven gear can also be provided on an auxiliary shaft parallel to the axis of the roller, and the roller is driven to rotate by a belt. The above structural diagram is only for reference.

[0020] Those skilled in the art will appreciate that the various embodiments disclosed above may be modified and altered in various ways without departing from the essence of the invention. Therefore, the scope of protection of the present invention shall be defined by the appended claims.

[0021] It should be noted that not all steps and units in the above processes are required, and certain steps or units can be omitted according to actual needs. The execution order of each step is not fixed and can be determined as needed. The device structure described in the above embodiments can be a physical structure or a logical structure, that is, some units may be implemented by the same physical entity, or some units may be implemented by multiple physical entities, or may be implemented by certain components in multiple independent devices.

[0022] The specific embodiments set forth above describe exemplary embodiments, but do not represent all embodiments that can be implemented or fall within the scope of protection of the claims. The term "exemplary" used throughout this specification means "used as an example, instance, or illustration" and does not mean "preferred" or "having advantages" over other embodiments. For the purpose of providing an understanding of the described technology, the specific embodiments include specific details. However, these technologies can be implemented without these specific details. In some instances, in order to avoid obscuring the concepts of the described embodiments, well-known structures and devices are shown in block diagram form.

[0023] The foregoing description of the present disclosure is provided to enable any person skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but is intended to be consistent with the widest range of principles and novel features disclosed herein.

Claims

1. A dual-circuit hybrid driven conveyor tail, comprising a main body (1) and a first driving machine (8), characterized in that: A plurality of rollers (2) are provided above the main body (1) at intervals along the conveying direction. A rolling output shaft (3) is fixedly provided at the left end of the roller (2). The rolling output shaft (3) is synchronously connected to a first drive shaft (4) installed on the left side of the main body (1) through a first transmission belt (5). The first drive shaft (4) is coaxially fixedly connected to a cylinder (6) provided above the main body (1). The cylinder (6) is connected to a first driving machine (8) installed outside the main body (1) through a second transmission belt (7) arranged outside the main body (1), and the first driving machine (8), the second transmission belt (7), the cylinder (6), the first driving shaft (4), the first transmission belt (5) and the rolling output shaft (3) together constitute a first driving circuit; A second driving machine (9) is provided below the main body (1), and an output end of the second driving machine (9) is coaxially connected to a second driving shaft (10). A driving gear (11) is fixed to the end of the second driving shaft (10), and the driving gear (11) is meshed and connected with a driven gear (12) installed below the main body (1). The driven gear (12) is connected to the right end of the roller (2) through a third transmission belt (13). The second driving machine (9), the second driving shaft (10), the driving gear (11), the driven gear (12), the third transmission belt (13) and the roller (2) together constitute a second driving circuit; The cylinder (6) is provided with a rotating mechanism (601), a connecting rod (602) and a piston (603) in order from top to bottom. Both sides of the piston (603) are connected to an external air path through an intake valve (604) and an exhaust valve (605) respectively.

2. The dual-circuit hybrid drive conveyor tail according to claim 1, characterized in that: Both ends of the rolling output shaft (3) are supported in bearing seats mounted on the side panels of the main body (1) via 6204 deep groove ball bearings, and the bearing seats are fixed to the side panels via four M12×35 hexagon socket bolts.

3. The dual-circuit hybrid drive conveyor tail according to claim 1, characterized in that: The first transmission belt (5) and the second transmission belt (7) are both HTD-5M synchronous toothed belts, and the corresponding pulleys have 28 teeth and 45 teeth respectively. The pulleys are detachably connected to their respective shafts through 10mm×8mm flat keys.

4. The dual-circuit hybrid drive conveyor tail according to claim 1, characterized in that: The rotating mechanism (601) is a double eccentric crank disc structure, wherein the double eccentric crank disc is coaxially fixed to the end of the first drive shaft (4) by means of two 8mm thick steel eccentric plates with the aid of a 6mm diameter positioning pin.

5. The dual-circuit hybrid drive conveyor tail according to claim 1, characterized in that: The driving gear (11) and the driven gear (12) are involute spur gears with a module of 2.5 and a pressure angle of 20°. The driving gear (11) has 24 teeth and the driven gear (12) has 48 teeth. The two gears are detachably connected to the corresponding shaft ends through six evenly distributed M6 countersunk screws.

6. The dual-circuit hybrid drive conveyor tail according to claim 1, characterized in that: The first driving engine (8) and the second driving engine (9) are respectively mounted on two 10 mm thick mounting plates welded to the bottom of the main body (1), and each mounting plate is fixed to the foundation via four 14.5 mm diameter through holes and 14 mm diameter anchor bolts.

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