A cross-belt sorter with easy adjustment

Abstract

The utility model belongs to the crossband sorting machine field, concretely relates to a crossband sorting machine convenient to adjust, including frame and bifurcation conveyor, be provided with position adjusting mechanism between frame and bifurcation conveyor, the lower end fixed mounting of bifurcation conveyor has four even distribution's adjusting pipe, four adjusting pipe between the common sliding connection has adjusting plate. The utility model discloses a worm and a screw drive combination mode is used to the bifurcation conveyor height adjustment, worm gear mechanism has reverse self -locking characteristic, namely worm can drive worm wheel, but worm wheel cannot reverse drive worm, thereby effectively prevented the bifurcation conveyor height self -change in the equipment operation process due to vibration, ensure the stability of working condition, and adjusting plate and four adjusting pipe sliding connection, and supplement with guide block, guarantee the stability and structure rigidity in the process of lifting, avoid the card stagnation or sway when adjusting.

Description

Technical Field

[0001] This utility model relates to the field of cross-belt sorting machine technology, specifically a cross-belt sorting machine that is easy to adjust. Background Technology

[0002] As a core sorting equipment in modern logistics hubs, cross-belt sorters are widely used in express delivery, e-commerce and warehousing due to their high efficiency and accuracy. Their basic working principle is that a trolley running on a circular track uses a small conveyor belt (i.e., "cross belt") perpendicular to the direction of travel on the trolley to throw packages laterally, thereby achieving dynamic sorting to designated compartments. In this system, the fork conveyor, as a key end-effector, undertakes the important function of receiving sorted items and smoothly guiding them to different diversion channels. However, in actual engineering applications and production layouts, the installation environment and process requirements of sorting systems vary greatly. For example, in order to adapt to different site limitations, optimize sorting line flow, or connect to downstream conveying equipment of different specifications (such as packaging machines, loading lines, etc.), it is often necessary to make fine adjustments to the horizontal distance between the forklift conveyor and the main sorting machine frame, as well as its own installation height. At present, most cross-belt sorting machines on the market have obvious shortcomings in the design of this link, which seriously affects the adaptability and stability of the equipment. Firstly, existing technology presents significant inconveniences in terms of horizontal spacing adjustment. The common practice is to simply bolt the forklift conveyor to the frame. When adjustment is needed, maintenance personnel must use tools to loosen multiple bolts one by one, roughly position it based on manual experience, and then retighten it. This process is not only cumbersome, labor-intensive, and time-consuming, severely impacting the operational efficiency of the logistics center, but it also makes it difficult to guarantee the symmetry and accuracy of the adjustment of the two forklift conveyors. Inaccurate positioning can easily cause items to jam, deflect, or even fall at the junction, resulting in sorting errors or equipment damage. Secondly, regarding height adjustment, a long-neglected but crucial issue is the stability after adjustment. Some designs may offer height adjustment functionality, such as through simple screw jacks or pin-type structures. However, these structures generally lack effective self-locking and anti-loosening mechanisms. The sorting machine generates continuous vibration during operation. More importantly, the sorted goods (especially heavy packages) experience a significant impact when falling into the forklift conveyor. This continuous vibration and sudden impact directly affect the adjustment mechanism, causing slight, gradual displacement or loosening of traditional screw-type or pin-type mechanisms. Over time, the originally set height changes, creating a height difference between the forklift conveyor and downstream equipment, forming a step. This not only causes goods to bounce and tip over during transport, generating noise and damage, but in the long run, this unstable support state also accelerates mechanism fatigue, creating safety hazards and rendering the adjustment function ineffective. Therefore, improvements to existing technologies are necessary. Utility Model Content

[0003] The purpose of this invention is to provide an easily adjustable cross-belt sorting machine, which solves the problems of inconvenient spacing adjustment and easy loosening after height adjustment.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an easily adjustable cross-belt sorting machine, comprising a frame and a fork conveyor, wherein a position adjustment mechanism is provided between the frame and the fork conveyor, four evenly distributed adjustment tubes are fixedly installed at the lower end of the fork conveyor, an adjustment plate is slidably connected between the four adjustment tubes, a support frame is fixedly connected at the lower end of the adjustment plate, a screw is fixedly installed at the lower end of the fork conveyor, an internally threaded tube is fixedly installed in the middle of the inner side of the adjustment plate, two symmetrically distributed mounting brackets are fixedly connected at the lower end of the adjustment plate, a rotating shaft is mounted inside the two mounting brackets through a bearing, a worm gear is fixedly connected to the outer side of the rotating shaft, and a worm wheel is fixedly connected to the outer side of the internally threaded tube.

[0005] Preferably, the rack is equipped with a linear conveyor inside, a reversing conveyor is provided in the middle of the rack, a bracket is fixedly installed at the lower end of the rack, the reversing conveyor is located between two branch conveyors, and the bottom of the bracket is equipped with height adjustment feet and anti-slip pads to achieve horizontal leveling of the entire rack and stable support on the ground.

[0006] Preferably, the internally threaded tube is connected to the screw via a thread, the worm meshes with the worm wheel, and handwheels are fixedly connected to both ends of the rotating shaft. The module and helix angle of the worm and worm wheel are precisely calculated to ensure that their transmission has a reliable reverse self-locking function.

[0007] Preferably, a guide block is fixedly connected to the outer side of the adjusting plate. The guide block is slidably connected to the adjusting tube. The guide block and the adjusting tube are fitted with a clearance to form a sliding pair that resists torsional load, ensuring that the adjusting plate can only move smoothly in the vertical direction during the lifting and lowering process, without any radial sway.

[0008] Preferably, the position adjustment mechanism includes a fixed plate, which is fixedly installed at the lower end of the frame. An internal threaded sleeve is installed inside the fixed plate via a bearing. A lead screw is threadedly connected inside the internal threaded sleeve. A connecting frame is fixedly installed at one end of the lead screw. A plug-in frame is bolted to the outside of the fork conveyor. A large gear is fixedly connected to the outside of the internal threaded sleeve. A motor is fixedly installed on the outside of the fixed plate. A small gear is fixedly connected to the outside of the output shaft of the motor. The motor is preferably a servo motor with braking function, which is connected to the system controller via a wire.

[0009] Preferably, the connector frame consists of a C-shaped strip and two rods. The connecting frame is slidably connected to the two rods of the connector frame. The two rods of the connector frame are optical axes, and their surfaces are hard chrome plated to improve wear resistance.

[0010] Preferably, the pinion meshes with the large gear, and two symmetrically distributed guide rods are fixedly connected to the outer side of the connecting frame. The guide rods are slidably connected to the fixed plate. The guide rods are arranged parallel to the axis of the lead screw, and there are two of them, which are placed on both sides of the lead screw to form a stable double guide structure.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model uses a combination of worm gear and threaded transmission to adjust the height of the forklift conveyor. The worm gear mechanism has a reverse self-locking characteristic, that is, the worm can drive the worm wheel, but the worm wheel cannot drive the worm in the reverse direction. This effectively prevents the height of the forklift conveyor from changing on its own due to vibration during equipment operation, ensuring the stability of the working state. In addition, the adjusting plate is slidably connected to the four adjusting tubes and is supplemented by guide blocks to ensure the smoothness and structural rigidity during the lifting process, avoiding jamming or shaking during adjustment.

[0012] 2. This utility model is driven by a motor, allowing operators to easily start the adjustment program simply by using control buttons or a human-machine interface. This greatly reduces the labor intensity and time cost for operators, making the adjustment work simple and quick. Furthermore, the motor smoothly and evenly transmits power to the internal threaded sleeve and lead screw through the meshing of a pinion and a large gear. This transmission method avoids the uncertainties of manual operation and enables precise linear displacement of the bifurcated conveyor. Attached Figure Description

[0013] Figure 1 The overall structure of this utility model is three-dimensional. Figure 1 ; Figure 2 The overall structure of this utility model is three-dimensional. Figure 2 ; Figure 3 For the present utility model Figure 1 A partial three-dimensional structural diagram; Figure 4 For the present utility model Figure 2 A 3D view of the adjustment plate; Figure 5 For the present utility model Figure 2 A magnified 3D view of the local structure; Figure 6 For the present utility model Figure 5 A 3D enlarged view of the connecting frame; Figure 7 For the present utility model Figure 2 A 3D magnified view of the adjusting rod; Figure 8 For the present utility model Figure 2 A 3D magnified view of the handwheel; Figure 9 For the present utility model Figure 3 Enlarged view of the structure of part A.

[0014] In the diagram: 1. Frame; 2. Forklift conveyor; 3. Position adjustment mechanism; 4. Linear conveyor; 5. Reversing conveyor; 6. Support; 7. Adjusting pipe; 8. Adjusting plate; 9. Support leg; 10. Screw; 11. Internal threaded pipe; 12. Mounting bracket; 13. Shaft; 14. Worm gear; 15. Handwheel; 16. Worm wheel; 17. Guide block; 31. Fixing plate; 32. Internal threaded sleeve; 33. Lead screw; 34. Connecting bracket; 35. Plug-in bracket; 36. Guide rod; 37. Large gear; 38. Motor; 39. Small gear. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-9An easily adjustable cross-belt sorting machine includes a frame 1 and a fork conveyor 2. A position adjustment mechanism 3 is provided between the frame 1 and the fork conveyor 2. Four evenly distributed adjustment pipes 7 are fixedly installed at the lower end of the fork conveyor 2. An adjustment plate 8 is slidably connected between the four adjustment pipes 7. A support frame 9 is fixedly connected to the lower end of the adjustment plate 8. A screw 10 is fixedly installed at the lower end of the fork conveyor 2. An internally threaded tube 11 is fixedly installed in the middle of the inner side of the adjustment plate 8. Two symmetrically distributed mounting brackets 12 are fixedly connected to the lower end of the adjustment plate 8. A rotating shaft 13 is mounted inside the two mounting brackets 12 through a bearing. A worm gear 14 is fixedly connected to the outer side of the rotating shaft 13. A worm wheel 16 is fixedly connected to the outer side of the internally threaded tube 11.

[0017] Please see Figure 1-9 The frame 1 is equipped with a linear conveyor 4 inside, a reversing conveyor 5 in the middle of the frame 1, and a bracket 6 fixedly installed at the lower end of the frame 1. The reversing conveyor 5 is located between two bifurcated conveyors 2. The bottom of the bracket 6 is equipped with height adjustment feet and anti-slip pads to achieve horizontal leveling of the entire frame 1 and stable support on the ground. The internal threaded tube 11 is connected to the screw 10 by threads, and the worm 14 meshes with the worm wheel 16. Handwheels 15 are fixedly connected to both ends of the rotating shaft 13. The module and helix angle of the worm 14 and the worm wheel 16 are precisely calculated to ensure that their transmission has a reliable reverse self-locking function. A guide block 17 is fixedly connected to the outside of the adjusting plate 8. The guide block 17 is slidably connected to the adjusting tube 7. The guide block 17 and the adjusting tube 7 adopt a clearance fit to form a sliding pair that resists torsional load, ensuring that the adjusting plate 8 can only move smoothly in the vertical direction during the lifting and lowering process, without any radial sway.

[0018] Please see Figure 1-9The position adjustment mechanism 3 includes a fixed plate 31. The fixed plate 31 is fixedly installed at the lower end of the frame 1. An internal threaded sleeve 32 is installed inside the fixed plate 31 via a bearing. A lead screw 33 is threadedly connected inside the internal threaded sleeve 32. A connecting bracket 34 is fixedly installed at one end of the lead screw 33. A plug-in bracket 35 is bolted to the outside of the fork conveyor 2. A large gear 37 is fixedly connected to the outside of the internal threaded sleeve 32. A motor 38 is fixedly installed on the outside of the fixed plate 31. A small gear 39 is fixedly connected to the outside of the output shaft of the motor 38. The motor 38 is preferably a servo motor with braking function. The machine is connected to the system controller via wires. The plug-in frame 35 consists of a C-shaped strip and two rods. The connecting frame 34 is slidably connected to the two rods of the plug-in frame 35. The two rods of the plug-in frame 35 are optical axes with hard chrome plating to improve wear resistance. The pinion 39 meshes with the gear 37. Two symmetrically distributed guide rods 36 are fixedly connected to the outside of the connecting frame 34. The guide rods 36 are slidably connected to the fixed plate 31. The guide rods 36 are parallel to the axis of the lead screw 33. There are two of them, which are placed on both sides of the lead screw 33 to form a stable double guide structure.

[0019] The specific implementation process of this utility model is as follows: When it is necessary to adjust the horizontal distance between the forklift conveyor 2 and the frame 1, the motor 38 is started. The motor 38 drives the small gear 39 to rotate. The small gear 39 meshes with the large gear 37 fixed on the outside of the inner threaded sleeve 32, thereby driving the inner threaded sleeve 32 to rotate in the bearing of the fixed plate 31. The rotation of the inner threaded sleeve 32 causes the lead screw 33 connected to it by the thread to produce axial linear motion. The lead screw 33 pushes or pulls the plug-in frame 35 fixed to the forklift conveyor 2 through the connecting frame 34, and finally realizes that the forklift conveyor 2 moves away from or closer to the frame 1. During this process, the guide rod 36 fixed on the connecting frame 34 slides along the fixed plate 31, providing guidance and support for the entire movement process, preventing it from rotating, and ensuring the smoothness and accuracy of the adjustment. When the overall height of the forklift conveyor 2 needs to be adjusted, the operator rotates any one of the handwheels 15. The handwheel 15 drives the rotating shaft 13 and the worm gear 14 on it to rotate synchronously. The worm gear 14 drives the worm wheel 16 that meshes with it to rotate. Since the worm wheel 16 is fixedly installed on the outside of the internal threaded tube 11, the internal threaded tube 11 also rotates. The internal threaded tube 11 is connected to the screw 10 fixedly installed at the lower end of the forklift conveyor 2 by a thread. At this time, the rotation of the internal threaded tube 11 is restricted by the adjusting plate 8. The adjusting plate 8 is slidably connected to the adjusting tube 7 through the guide block 17. It can only move up and down and cannot rotate. According to the principle of thread transmission, the rotational motion of the internal threaded tube 11 will be converted into its own upward or downward motion along with the entire adjusting plate 8 and the support frame 9, thereby lifting or lowering the forklift conveyor 2 to achieve height adjustment. After the adjustment is completed, thanks to the inherent reverse self-locking characteristics of the worm gear mechanism, the height position will be reliably locked and will not change on its own due to the load or equipment vibration.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An easily adjustable cross-belt sorting machine, comprising a frame (1) and a fork conveyor (2), characterized in that: A position adjustment mechanism (3) is provided between the frame (1) and the fork conveyor (2). Four evenly distributed adjustment tubes (7) are fixedly installed at the lower end of the fork conveyor (2). An adjustment plate (8) is slidably connected between the four adjustment tubes (7). A support frame (9) is fixedly connected at the lower end of the adjustment plate (8). A screw (10) is fixedly installed at the lower end of the fork conveyor (2). An internal threaded tube (11) is fixedly installed in the middle of the inner side of the adjustment plate (8). Two symmetrically distributed mounting brackets (12) are fixedly connected at the lower end of the adjustment plate (8). A rotating shaft (13) is installed inside the two mounting brackets (12) through a bearing. A worm gear (14) is fixedly connected to the outer side of the rotating shaft (13). A worm wheel (16) is fixedly connected to the outer side of the internal threaded tube (11).

2. The easily adjustable cross-belt sorting machine according to claim 1, characterized in that: The frame (1) is equipped with a linear conveyor (4) inside, and a reversing conveyor (5) is provided in the middle of the frame (1). A bracket (6) is fixedly installed at the lower end of the frame (1), and the reversing conveyor (5) is located between two branch conveyors (2).

3. The easily adjustable cross-belt sorting machine according to claim 1, characterized in that: The internally threaded tube (11) is connected to the screw (10) by a thread, the worm (14) meshes with the worm wheel (16), and handwheels (15) are fixedly connected to both ends of the rotating shaft (13).

4. The easily adjustable cross-belt sorting machine according to claim 1, characterized in that: A guide block (17) is fixedly connected to the outside of the adjusting plate (8), and the guide block (17) is slidably connected to the adjusting tube (7).

5. The easily adjustable cross-belt sorting machine according to claim 1, characterized in that: The position adjustment mechanism (3) includes a fixed plate (31). The fixed plate (31) is fixedly installed at the lower end of the frame (1). An internal threaded sleeve (32) is installed inside the fixed plate (31) through a bearing. A lead screw (33) is threadedly connected inside the internal threaded sleeve (32). A connecting frame (34) is fixedly installed at one end of the lead screw (33). A plug-in frame (35) is bolted to the outside of the fork conveyor (2). A large gear (37) is fixedly connected to the outside of the internal threaded sleeve (32). A motor (38) is fixedly installed on the outside of the fixed plate (31). A small gear (39) is fixedly connected to the outside of the output shaft of the motor (38).

6. The easily adjustable cross-belt sorting machine according to claim 5, characterized in that: The plug-in frame (35) consists of a C-shaped strip and two rods, and the connecting frame (34) is slidably connected to the two rods of the plug-in frame (35).

7. The easily adjustable cross-belt sorting machine according to claim 5, characterized in that: The small gear (39) meshes with the large gear (37), and two symmetrically distributed guide rods (36) are fixedly connected to the outer side of the connecting frame (34). The guide rods (36) are slidably connected to the fixed plate (31).

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