Lightweight sorting trolley

Abstract

The utility model provides a kind of light weight sorting trolley, is installed on transport track, including frame, conveyer belt, walking drive source and gyro wheel group, the frame includes the rectangular frame enclosed by two first section bars and two second section bars, the first section bar is parallel to the width direction of the conveyer belt, the second section bar is parallel to the length direction of the conveyer belt;Two roller cylinders parallel to the width direction of the conveyer belt are rotatably installed on the frame, the conveyer belt is wound on the two roller cylinders;The gyro wheel group is connected with rectangular frame, and it is located at the bottom of the rectangular frame, it rotates under the drive of the walking drive source, realizes the walking of sorting trolley along transport track.The utility model has the beneficial effect that: by using the rectangular frame enclosed by four section bars, the chassis of frame is realized, which helps to reduce the overall quality of sorting trolley, reduce the wear of gyro wheel group, prolong the service life of gyro wheel group.

Description

Technical Field

[0001] This utility model relates to the field of logistics sorting technology, and in particular to a lightweight sorting cart. Background Technology

[0002] With the rapid development of the e-commerce industry, the market demand for automated sorting machines, which can automatically sort goods and improve logistics efficiency, has increased significantly. They are widely used in production logistics systems or logistics distribution centers in various industries. Automated sorting machines typically include a transport track, a feeding mechanism and a receiving mechanism distributed along the extension direction of the transport track, and sorting trolleys that move along the transport track. The sorting trolleys receive goods from the feeding mechanism and then move along the transport track to the corresponding delivery position in the receiving mechanism to complete one sorting of the goods.

[0003] Existing sorting carts consist of a conveyor belt for receiving or delivering goods, a chassis at the bottom of the conveyor belt, side plates welded to both sides of the chassis, and a roller assembly connected to the chassis. The roller assembly rolls in conjunction with the transport track, enabling the sorting cart to move along the track. While this type of sorting cart has a stable structure, it suffers from problems such as heavy weight and complex installation. The heavy weight leads to severe wear on the rollers in the roller assembly, requiring frequent inspection or replacement; the complex installation structure makes disassembly difficult, resulting in challenging maintenance in the future. Utility Model Content

[0004] The purpose of this utility model is to provide a lightweight sorting cart, which adopts a simple chassis-less frame, has a small overall weight, and is easy to maintain.

[0005] This utility model provides a lightweight sorting cart, installed on a transport track, including a frame, a conveyor belt, a driving source, and a roller assembly. The frame includes a rectangular frame formed by two first profiles and two second profiles. The first profiles are parallel to the width direction of the conveyor belt, and the second profiles are parallel to the length direction of the conveyor belt. Two rollers parallel to the width direction of the conveyor belt are rotatably mounted on the frame, and the conveyor belt is wound around the two rollers. The roller assembly is connected to the rectangular frame and located at the bottom of the rectangular frame. It rotates under the drive of the driving source, enabling the sorting cart to travel along the transport track.

[0006] Preferably, both the first profile and the second profile are aluminum profiles.

[0007] Preferably, the ends of the first profile and the second profile abut against each other vertically, and the two are connected by a first clamp.

[0008] Preferably, the roller assembly is connected to the second profile via a second clamp.

[0009] Preferably, the roller assembly includes a drive wheel section, which includes a drive wheel and a limiting wheel, both distributed on both sides along the moving direction of the sorting trolley, for contacting the side wall of the transport track, and the drive wheel rotates under the drive of the walking drive source.

[0010] Preferably, the drive wheel further includes a support and a cantilever hinged to the support, the cantilever and the support are connected by a spring, the limiting wheel is rotatably disposed at the bottom of the cantilever, and the drive wheel is rotatably disposed at the bottom of the support.

[0011] Preferably, the roller assembly further includes a driven wheel section, which includes a traveling wheel and a plurality of guide wheels. The traveling wheel is used to travel on the top of the transport track; the plurality of guide wheels are distributed on both sides along the moving direction of the sorting trolley and are used to contact the side wall of the transport track.

[0012] Preferably, it further includes two side plates respectively disposed on two second profiles, the side plates being parallel to the length direction of the conveyor belt, the two side plates being disposed on both sides of the conveyor belt along the width direction of the conveyor belt, and forming a first opening and a second opening respectively between them and the two ends of the conveyor belt.

[0013] Preferably, the second opening is further provided with a baffle parallel to the width direction of the conveyor belt.

[0014] Preferably, it also includes a positioning sensor connected to one of the second profiles.

[0015] The advantages of this utility model are:

[0016] 1. By using a rectangular frame formed by four profiles, the chassis of the sorting cart is eliminated, which helps to reduce the overall weight of the sorting cart, reduce wear on the roller assembly, and extend the service life of the roller assembly. The lightweight sorting cart also facilitates later installation and maintenance, and even in automated sorting machines with multi-layer transport tracks, it is easier to replace the entire sorting cart.

[0017] 2. The clamps connect adjacent profiles and the roller assembly to the profiles, making installation faster, disassembly easier, and maintenance and adjustment more convenient. It adapts to components of different shapes and sizes and enables positioning between adjacent profiles. Furthermore, it allows for focusing on design and workmanship at the production end, eliminating the need for additional time and manpower for adaptive adjustments during installation, thus effectively reducing production costs. Attached Figure Description

[0018] like Figure 1 This is an exploded view of the sorting cart of this utility model;

[0019] Figure 2and Figure 3 These are perspective views of the sorting cart of this utility model from different viewpoints;

[0020] Figure 4 This is a schematic diagram of the mounting structure of the vehicle frame, the driving wheel section, and the driven wheel section.

[0021] Figure 5 A three-dimensional view of the drive wheel;

[0022] Figure 6 This is a perspective view of the first driven wheel.

[0023] Figure 7 A three-dimensional view of the first clamp;

[0024] Figure 8 This is a three-dimensional view of the second clamp.

[0025] Component designation explanation:

[0026] 11 Conveyor Belt

[0027] 12 rollers

[0028] 21 Side panels

[0029] 22 baffles

[0030] 3 Conveyor belt drive source

[0031] 4. Drive wheel section

[0032] 41. Drive wheel

[0033] 42 limit wheels

[0034] 431 support

[0035] 432 cantilever

[0036] 44 Springs

[0037] 45 Walking drive source

[0038] 451 pulley

[0039] 452 Synchronous Belt

[0040] 46 First connecting part

[0041] 5 Driven wheel section

[0042] 501 First Driven Gear

[0043] 502 Second Driven Gear

[0044] 51 Guide Wheel

[0045] 52 Walking wheels

[0046] 531 U-shaped channel

[0047] 532 Connecting Plate

[0048] 5321 Opening

[0049] 54 Second connecting part

[0050] 6. Frame

[0051] 61 First Profile

[0052] 62 Second Profile

[0053] 63 First embrace

[0054] 631 First Mounting Plate

[0055] 632 Second Mounting Plate

[0056] 64 Second Clamp

[0057] 641 Third Mounting Plate

[0058] 642 Fourth Mounting Plate

[0059] 643 Installation Department

[0060] 7. Positioning Sensor Detailed Implementation

[0061] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate this utility model and are not intended to limit it.

[0062] In the description of this utility model, it should be noted that the terms "vertical," "horizontal," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," 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 utility model 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 utility model. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0063] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0064] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0065] Figure 2 The image shown is a perspective view of the sorting cart of this utility model. In the following description, it will be referred to as... Figure 2 The attached diagram serves as a reference for direction. Figure 2 In the diagram, the width direction of the conveyor belt 11 is defined as the left-right direction, and the drive wheel set 4 is located on the right side of the conveyor belt 11; the length direction of the conveyor belt 11 is defined as the front-back direction, and the baffle 22 is located on the front side of the side plate 21; the direction perpendicular to the left-right and front-back directions is defined as the up-down direction, and the drive wheel set 11 is located below the conveyor belt 11.

[0066] like Figure 1-3 As shown, this utility model provides a lightweight sorting trolley installed on a transport track. The sorting trolley includes a frame 6, a conveyor belt 11, a driving source 45, and a roller assembly. The frame 6 comprises a rectangular frame formed by two first profiles 61 and two second profiles 62. The first profiles 61 are parallel to the width direction of the conveyor belt 11, and the second profiles 62 are parallel to the length direction of the conveyor belt 11. Two rollers 12, parallel to the width direction of the conveyor belt 11, are rotatably mounted on the frame 6, and the conveyor belt 11 is wound around the two rollers 12. One of the rollers 12 is connected to the conveyor belt driving source 3, or is an electric roller. When the roller 12 rotates, it drives the conveyor belt 11 to translate, realizing the receiving or delivery of items. The roller assembly is connected to the rectangular frame and located at the bottom of the rectangular frame. It rotates under the drive of the driving source 45, enabling the sorting trolley to travel along the transport track.

[0067] Compared to the chassis-based frames used in existing technologies, this invention achieves chassis-free chassis construction by employing a rectangular frame formed by four profiles. This helps reduce the overall weight of the sorting cart, decreases wear on the roller assembly, and extends the roller assembly's lifespan. The lightweight sorting cart also facilitates later installation and maintenance, making it easier to replace the entire cart even in automated sorting machines with multi-layer transport tracks.

[0068] Preferably, both the first profile 61 and the second profile 62 are lightweight aluminum profiles, and the rectangular frame formed by the four aluminum profiles can further reduce the weight of the frame 6. Compared with existing sorting carts with frames welded from carbon steel square tubes, the overall weight of the sorting cart of this invention can be reduced by about 10 kg.

[0069] like Figure 1 , Figure 3-4 As shown, the ends of the first profile 61 and the second profile 62 abut against each other, and are connected by a first clamp 63. A cavity for accommodating the conveyor belt 11 is provided in the rectangular frame.

[0070] Specifically, the end of the second profile 62 is positioned above the end of the first profile 61, and the conveyor belt 11 is positioned in the cavity located between the two second profiles 62 and above the first profile 61. Alternatively, those skilled in the art may, as needed, position the end of the second profile 62 below the end of the first profile 61, in which case the conveyor belt 11 is positioned in the cavity located between the two first profiles 61 and above the second profile 62.

[0071] like Figure 7 As shown, the first clamp 63 is specifically a U-shaped clamp, which includes a vertically arranged first mounting plate 631, and horizontally arranged second mounting plates 632 connected to the upper and lower sides of the first mounting plate 631. The ends of the first profile 61 and the second profile 62 are abutted between the two second mounting plates 632. The first mounting plate 631 and the second mounting plate 632 each have one or more of the following: round holes and elongated holes. The upper second mounting plate 632 is fastened to the second profile 62 by multiple bolts, and the lower second mounting plate 632 is fastened to the first profile 61 by multiple bolts. The first mounting plate 631 is simultaneously fastened to both the first profile 61 and the second profile 62 by multiple bolts.

[0072] like Figure 1-5 As shown, the roller assembly includes a drive wheel section 4, which includes a support 431, a cantilever 432 hinged to the support 431, a limiting wheel 42 rotatably mounted at the bottom of the cantilever 432, and a drive wheel 41 rotatably mounted at the bottom of the support 431. A travel drive source 45 is mounted on the support 431, and the drive wheel 41 rotates under the drive of the travel drive source 45. The axes of the drive wheel 41 and the limiting wheel 42 both extend in the vertical direction and are distributed on both sides along the movement direction of the sorting trolley, for contact with the side wall of the transport track. The arrangement of the cantilever 432 and the spring 44 provides a certain degree of flexibility for the steering of the sorting trolley, and the elastic force of the spring 44 ensures that the drive wheel 41 and the limiting wheel 42 are in close contact with the side wall of the transport track.

[0073] The way the travel drive source 45 drives the drive wheel 41 to rotate is not limited. The output shaft of the travel drive source 45 can be directly connected to the drive wheel 41 coaxially to drive the drive wheel 41 to rotate; or it can be connected to the pulley 451 located below the support 431 coaxially, and the pulley 451 and the drive wheel 41 are connected by a synchronous belt 452.

[0074] like Figure 1-4 As shown, the roller assembly further includes multiple driven wheel sections 5, each driven wheel section 5 including a traveling wheel 52 and multiple guide wheels 51. The axis of the traveling wheel 52 extends in the front-to-back direction for traveling on the top of the transport track; the axis of the guide wheel 51 extends in the up-down direction, and the multiple guide wheels 51 are distributed on both sides along the moving direction of the sorting trolley for contacting the side wall of the transport track.

[0075] like Figure 4 and Figure 8 As shown, the roller assembly is connected to the second profile 62 via a second clamp 64. The second clamp 64 includes a vertically arranged third mounting plate 641, with horizontally arranged fourth mounting plates 642 connected to its upper and lower sides respectively. The second profile 62 is positioned between the two fourth mounting plates 642, and the third mounting plate 641 and the fourth mounting plate 642 are each fastened to the second profile 62 by multiple bolts. A mounting portion 643 is also provided on the side of the third mounting plate 641 away from the second profile 62, for connecting to the roller assembly. The second clamp 64 can be a one-piece U-shaped clamp, where the fourth mounting plate 642 and the third mounting plate 641 are integrally connected; or it can be a separate clamp, where the fourth mounting plate 642 and the third mounting plate 641 are positioned and connected via inserts and slots.

[0076] like Figure 4 and Figure 5 As shown, a first connecting part 46 is also provided on the support 431 of the drive wheel part 4. Both the first connecting part 46 and the mounting part 643 have connecting holes that are parallel to the vertical direction. The two are fastened together by bolts, and the relative position between the drive wheel part 4 and the second profile 62 is fixed.

[0077] like Figure 4 and Figure 6 As shown, the driven wheel section 5 also includes a second connecting section 54, a U-shaped groove 531, and a connecting plate 532 connected in sequence. The traveling wheel 52 is rotatably mounted in the U-shaped groove 531, and multiple guide wheels 51 are rotatably mounted on the bottom of the connecting plate 532. An opening 5321 is also provided on the connecting plate 532, through which the traveling wheel 52 protrudes to facilitate contact with the top of the transport track. The second connecting section 54 is used to connect with the mounting section 643.

[0078] The driven wheel section 5 specifically includes two configuration forms: the first configuration form adopted by the first driven wheel section 501, and the second configuration form adopted by the second driven wheel section 502. For example... Figure 5 As shown, in the first driven wheel portion 501, the U-shaped groove 531 is vertically arranged, with groove plates on its top and front and rear sides, and open on its left and right sides and bottom. The second connecting portion 54, the U-shaped groove 531, and the connecting plate 532 are connected sequentially from top to bottom. Both the second connecting portion 54 and the mounting portion 643 have connecting holes axially parallel to the vertical direction, and the two are fastened together by bolts. The relative position between the first driven wheel portion 501 and the second profile 62 is fixed. Figure 4 As shown, in the second driven wheel portion 502, the U-shaped groove 531 is horizontally arranged, with groove plates on one of its left and right sides and on both its front and rear sides. The top and bottom sides and the other side of its left and right sides are open. The second connecting portion 54 is located on one of the groove plates on the left or right sides of the U-shaped groove 531, and the connecting plate 532 is located at the bottom of the U-shaped groove 531. Both the second connecting portion 54 and the mounting portion 643 have connecting holes axially parallel to the vertical direction. The two are hinged together by another U-shaped groove, meaning the second driven wheel portion 502 can swing relative to the second profile 62.

[0079] This invention uses clamps to connect adjacent profiles and roller assemblies to profiles, resulting in faster installation, easier disassembly, and convenient maintenance or adjustment. It adapts to components of different shapes and sizes and enables precise positioning between adjacent profiles. Furthermore, it allows for focused design and workmanship at the production end, eliminating the need for additional time and manpower for adaptive adjustments during installation, thus effectively reducing production costs. Existing welding methods suffer from insufficient strength and susceptibility to deformation; clamp connections effectively overcome these problems.

[0080] like Figure 1 and Figure 4 As shown, in a specific embodiment of this utility model, the roller 12 is rotatably mounted between two opposing first clamps 63, and located on the front or rear side of the second profile 62. The conveyor belt drive source 3 is fixed to the outside of one of the first clamps 63 by a mounting bracket. Specifically, the conveyor belt drive source 3 and the travel drive source 45 are servo motors.

[0081] In an automated sorting machine, the number of transport tracks is not limited; it can be one or two guide rails. When the transport track includes one guide rail, the driving wheel 4 and driven wheel 5 are located in the middle of the second profile 62 to ensure that the sorting trolley can move stably along the guide rail. When the transport track includes two guide rails, there are four driven wheel 5s, distributed at the four corners of the rectangular frame. Each guide rail is connected to two driven wheel 5s, and the driving wheel 4 is located near one of the driven wheel 5s.

[0082] like Figure 1 and Figure 2 As shown, the sorting trolley provided by this utility model also includes two side plates 21 bolted to two second profiles 62. Each side plate 21 is parallel to the length direction of the conveyor belt 11, and the two side plates 21 are arranged on the left and right sides of the conveyor belt 11 along the width direction of the conveyor belt 11, forming a first opening and a second opening with the front and rear ends of the conveyor belt 11, respectively. The sorting trolley can receive goods from the first opening and deliver goods from the second opening. Preferably, a baffle 22 parallel to the width direction of the conveyor belt 11 is also provided at the second opening, that is, the sorting trolley only receives and delivers goods through the first opening, and both side plates 21 and baffle 22 are used to prevent goods from falling off the conveyor belt 11.

[0083] Furthermore, such as Figure 1 and Figure 3 As shown, the sorting trolley provided by this utility model also includes a positioning sensor 7 connected to one of the second profiles 62. The positioning sensor 7 is specifically a photoelectric sensor, which is used for positioning and obstacle avoidance of the sorting trolley on the transport track.

[0084] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A lightweight sorting cart, installed on a transport track, characterized in that, Includes a frame (6), conveyor belt (11), drive unit (45), and roller assembly. The frame (6) includes a rectangular frame formed by two first profiles (61) and two second profiles (62), wherein the first profiles (61) are parallel to the width direction of the conveyor belt (11) and the second profiles (62) are parallel to the length direction of the conveyor belt (11). Two rollers (12) parallel to the width direction of the conveyor belt (11) are rotatably mounted on the frame (6), and the conveyor belt (11) is wound around the two rollers (12); The roller assembly is connected to the rectangular frame and located at the bottom of the rectangular frame. It rotates under the drive of the walking drive source (45) to realize the movement of the sorting trolley along the transport track.

2. The sorting cart according to claim 1, characterized in that, Both the first profile (61) and the second profile (62) are aluminum profiles.

3. The sorting cart according to claim 1, characterized in that, The ends of the first profile (61) and the second profile (62) abut against each other, and the two are connected by a first clamp (63).

4. The sorting cart according to claim 1, characterized in that, The roller assembly is connected to the second profile (62) via a second clamp (64).

5. The sorting cart according to claim 1, characterized in that, The roller assembly includes an active wheel section (4), which includes an active wheel (41) and a limiting wheel (42), both of which are distributed on both sides along the moving direction of the sorting trolley and are used to contact the side wall of the transport track. The active wheel (41) rotates under the drive of the walking drive source (45).

6. The sorting cart according to claim 5, characterized in that, The drive wheel part (4) also includes a support (431) and a cantilever (432) hinged to the support (431). The cantilever (432) and the support (431) are connected by a spring (44). The limiting wheel (42) is rotatably disposed at the bottom of the cantilever (432), and the drive wheel (41) is rotatably disposed at the bottom of the support (431).

7. The sorting cart according to claim 5, characterized in that, The roller assembly also includes a driven wheel section (5), which includes a traveling wheel (52) and a plurality of guide wheels (51). The traveling wheel (52) is used to travel on the top of the transport track; the plurality of guide wheels (51) are distributed on both sides along the moving direction of the sorting trolley and are used to contact the side wall of the transport track.

8. The sorting cart according to claim 1, characterized in that, It also includes two side plates (21) respectively disposed on two second profiles (62), the side plates (21) being parallel to the length direction of the conveyor belt (11), the two side plates (21) being disposed on both sides of the conveyor belt (11) along the width direction of the conveyor belt (11), and forming a first opening and a second opening respectively between them and the two ends of the conveyor belt (11).

9. The sorting cart according to claim 8, characterized in that, The second opening is also provided with a baffle (22) parallel to the width direction of the conveyor belt (11).

10. The sorting cart according to claim 1, characterized in that, It also includes a positioning sensor (7) connected to one of the second profiles (62).

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