A reciprocating motion drive structure for a transport trolley

Abstract

This utility model discloses a reciprocating motion drive structure for a transport trolley, including a track and a frame. The frame is movably mounted above the track, and a rolling assembly with rollers at its bottom supports the frame and allows it to move on the track. A transmission assembly is mounted on the frame to drive the frame to reciprocate on the track. This transmission assembly includes a synchronous pulley driven by a motor, a transition pulley pivotally mounted on the frame, and a synchronous belt. The two ends of the synchronous belt are fixed to connecting plates at both ends of the track. The transition pulleys are distributed on both sides of the synchronous pulley, and the synchronous belt is wound around the transition pulleys and the synchronous pulley. When the motor drives the synchronous pulley to rotate, the synchronous belt, in conjunction with the transition pulleys, drives the frame to reciprocate on the track. By replacing direct drive with synchronous belt transmission, and relying on the meshing of the synchronous belt teeth and the fixing at both ends, the start-stop impact can be effectively buffered, and slippage errors can be eliminated, resulting in smooth start-stop and high positioning accuracy.

Description

Technical Field

[0001] This utility model belongs to the technical field of transport trolleys and relates to a reciprocating motion drive structure for transport trolleys. Background Technology

[0002] In industrial production and logistics, transport trolleys are commonly used material handling equipment. Currently, most transport trolleys on the market use a power source structure that is directly connected to the trolley's roller axles. While this traditional design can achieve basic transport functions, it has many drawbacks.

[0003] During startup, the power source directly acts on the roller shaft, generating a large instantaneous torque. Over time, this torque can damage the trolley track, creating pits at the initial track position, affecting track flatness and trolley stability. Simultaneously, it accelerates roller surface wear, shortens roller lifespan, and increases equipment maintenance costs.

[0004] Furthermore, when the trolley comes to a sudden stop, due to inertia, it cannot stop immediately and will continue to slide forward for a distance, resulting in inaccurate positioning. This defect makes this type of transport trolley unsuitable for applications requiring high positioning accuracy. Utility Model Content

[0005] The purpose of this utility model is to provide a reciprocating motion drive structure for a transport trolley, and to solve the technical problems mentioned in the background art through structural improvement.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A reciprocating motion drive structure for a transport trolley includes a track and a frame. The frame is movably mounted above the track and has a rolling assembly at its bottom. The rolling assembly includes rollers that are rotatably mounted on the track to support the frame and enable it to move on the track. A transmission assembly is mounted on the frame to drive the frame to reciprocate on the track. The transmission assembly includes a synchronous pulley driven by a motor, a transition pulley pivotally mounted on the frame, and a synchronous belt.

[0008] The two ends of the synchronous belt are fixed to the connecting plates at both ends of the track. The transition pulleys are distributed on both sides of the synchronous pulleys, and the synchronous belt is wound around the transition pulleys and the synchronous pulleys. When the motor drives the synchronous pulleys to rotate, the synchronous belt and the transition pulleys work together to drive the frame to reciprocate on the track.

[0009] As a further improvement of one embodiment of the present invention, the rolling assembly includes a support shaft, the support shaft is mounted on the frame via a first bearing, and the rollers are fixed to both ends of the support shaft and roll in cooperation with the track.

[0010] As a further improvement of one embodiment of the present invention, the transmission assembly includes a double-head reducer, a motor and a transmission shaft. The input end of the double-head reducer is connected to the motor, and the output end of the double-head reducer is connected to the transmission shaft through a coupling. The synchronous pulley is disposed on the transmission shaft.

[0011] As a further improvement of one embodiment of the present invention, the synchronous belt is a toothed synchronous belt, and the surfaces of the synchronous pulley and the transition pulley are provided with matching tooth grooves.

[0012] As a further improvement of one embodiment of the present invention, the two ends of the synchronous belt are anchored to the connecting plates at both ends of the track by bolts or snap fasteners.

[0013] As a further improvement of one embodiment of the present invention, the surface of the roller is covered with a polyurethane wear-resistant layer.

[0014] As a further improvement of one embodiment of the present invention, an elastic buffer pad is provided at the initial end of the track.

[0015] As a further improvement of one embodiment of this utility model, the motor is a servo motor or a stepper motor.

[0016] The above technical solution has the following advantages: by replacing direct drive with synchronous belt drive, and relying on the meshing of synchronous belt teeth and the fixing at both ends, the start-stop impact can be effectively buffered and the sliding error can be eliminated, which has the characteristics of smooth start-stop and high positioning accuracy. Attached Figure Description

[0017] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0019] Figure 1 This is a structural schematic diagram of the present invention.

[0020] Figure 2 A schematic diagram of the transmission component and its surrounding structure provided by this utility model.

[0021] In the picture:

[0022] 1. Track;

[0023] 2. Support shaft;

[0024] 3. Rollers;

[0025] 4. Frame;

[0026] 5. Transition wheel;

[0027] 6. Synchronous belt;

[0028] 7. Electric motor;

[0029] 8. Synchronous pulley;

[0030] 9. Drive shaft;

[0031] 10. Connecting plate. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0034] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model. Example

[0035] See Figures 1-2 As shown, a reciprocating motion drive structure for a transport trolley includes a track 1 and a frame 4. The frame 4 is movably disposed above the track 1, and a rolling assembly is disposed at its bottom. The rolling assembly includes rollers 3 that are rotatably mounted on the track 1 to support the frame 4 and enable the frame 4 to move on the track 1.

[0036] The transmission assembly mounted on the frame 4 is crucial for driving its reciprocating motion. This transmission assembly comprises a motor 7, a synchronous pulley 8, a transition pulley 5, and a synchronous belt 6. The motor 7 serves as the power source, driving the synchronous pulley 8 to rotate. The transition pulleys 5 are pivotally mounted on the frame 4 and symmetrically distributed on both sides of the synchronous pulley 8. This arrangement effectively distributes the force and ensures the stability of the transmission.

[0037] The synchronous belt 6 is a crucial link connecting various components to achieve transmission. Its two ends are reliably fixed to the connecting plates 10 at both ends of the track 1 using methods such as bolt anchoring or snap-locking. The synchronous belt 6 is wound around the transition pulley 5 and the synchronous pulley 8, forming a closed transmission circuit.

[0038] When motor 7 starts and drives synchronous pulley 8 to rotate, synchronous belt 6 begins to move under the drive of synchronous pulley 8. Simultaneously, transition pulley 5 guides and supports synchronous belt 6, enabling it to run along a predetermined trajectory. Since both ends of synchronous belt 6 are fixed, its movement is converted into reciprocating linear motion of the frame 4 on track 1, thus realizing the reciprocating transport function of the transport trolley. Because the transmission between synchronous pulley 8 and synchronous belt 6 is toothed, the operation is smooth, the start and stop positions are precise, effectively buffering start and stop impacts and eliminating slippage errors. It can be widely used in various scenarios requiring reciprocating transport.

[0039] In this embodiment, the rolling assembly includes a support shaft 2, which is mounted on the frame 4 via a first bearing, allowing it to rotate along its own axis, effectively reducing rotational friction and improving transmission efficiency. Rollers 3 are securely fixed to both ends of the support shaft 2, their outer contours precisely matching the track 1 to form a good rolling fit.

[0040] The transmission assembly is the core component driving the reciprocating motion of the vehicle frame. This assembly includes a double-headed reducer, a motor 7, and a drive shaft 9. The double-headed reducer plays a crucial role in reducing speed and increasing torque during transmission. Its input end is tightly connected to the motor 7, ensuring a stable introduction of the power output from the motor 7 into the reducer. The output end of the double-headed reducer is connected to the drive shaft 9 via a coupling. This coupling effectively compensates for axial, radial, and angular displacements between the two shafts, ensuring smooth and reliable power transmission. A synchronizing pulley 8 is fixedly mounted on the drive shaft 9 and rotates synchronously with the drive shaft 9.

[0041] In this embodiment, a toothed synchronous belt 6 is selected. This design enables more precise transmission between the synchronous belt 6, the synchronous pulley 8, and the transition pulley 5, avoiding slippage. The surfaces of the synchronous pulley 8 and the transition pulley 5 are provided with toothed grooves that match the synchronous belt 6, and the two mesh with each other, further improving the stability and accuracy of the transmission.

[0042] In this embodiment, the surface of the roller 3 is covered with a polyurethane wear-resistant layer. The polyurethane material has good wear resistance, elasticity and shock absorption properties, which can effectively reduce the wear between the roller 3 and the track 1, reduce operating noise and extend the service life of the roller 3.

[0043] Meanwhile, an elastic buffer pad is set at the initial end of track 1. When the frame moves to the initial end of track 1, the elastic buffer pad can play a role in buffering and shock absorption, avoiding rigid collision between the frame and the end of track 1, and protecting the frame and track 1 from damage.

[0044] The motor used in this embodiment is either a servo motor or a stepper motor. Both types of motors have the characteristics of high control precision and stable operation. They can accurately control the speed and direction according to the instructions of the control system, thereby achieving precise control of the reciprocating motion of the frame.

[0045] The reciprocating motion drive structure for the transport trolley provided by this utility model abandons the traditional direct drive method and adopts synchronous belt transmission. The synchronous belt, with its teeth precisely meshing with the synchronous pulley and transition pulley, and its two ends firmly fixed to the track, offers significant advantages during operation. The transition pulley provides good guidance, and the synchronous pulley provides stable driving force; together, they effectively buffer the impact force when the trolley starts and stops, avoiding damage to the equipment from rigid collisions. Simultaneously, this transmission method eliminates slippage errors, ensuring smooth start and stop of the trolley on the track and significantly improving positioning accuracy.

[0046] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0047] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0048] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A reciprocating motion drive structure for a transport trolley, comprising a track (1) and a frame (4), wherein the frame (4) is movably disposed above the track (1), and a rolling assembly is disposed at its bottom, the rolling assembly comprising rollers (3) rotatably mounted on the track (1) for supporting the frame (4) and enabling the frame (4) to move on the track (1); characterized in that, The frame (4) is provided with a transmission assembly, which is used to drive the frame (4) to reciprocate on the track (1). The transmission assembly includes a synchronous pulley (8) driven by a motor (7), a transition pulley (5) pivotally mounted on the frame (4), and a synchronous belt (6). The two ends of the synchronous belt (6) are fixed on the connecting plates (10) at both ends of the track (1). The transition wheel (5) is distributed on both sides of the synchronous wheel (8), and the synchronous belt (6) is wound around the transition wheel (5) and the synchronous wheel (8). When the motor (7) drives the synchronous wheel (8) to rotate, the frame (4) is driven to reciprocate on the track (1) through the cooperation of the synchronous belt (6) and the transition wheel (5).

2. The reciprocating motion drive structure for the transport trolley according to claim 1, characterized in that, The rolling assembly includes a support shaft (2), which is mounted on the frame (4) via a first bearing. The rollers (3) are fixed to both ends of the support shaft (2) and roll in cooperation with the track (1).

3. The reciprocating motion drive structure for the transport trolley according to claim 1, characterized in that, The transmission assembly includes a double-head reducer, a motor (7) and a transmission shaft (9). The input end of the double-head reducer is connected to the motor (7), and the output end of the double-head reducer is connected to the transmission shaft (9) through a coupling. The synchronous pulley (8) is mounted on the transmission shaft (9).

4. The reciprocating motion drive structure for the transport trolley according to claim 1, characterized in that, The synchronous belt (6) is a toothed synchronous belt, and the surfaces of the synchronous pulley (8) and the transition pulley (5) are provided with matching tooth grooves.

5. The reciprocating motion drive structure for the transport trolley according to claim 1, characterized in that, The timing belt (6) is anchored at both ends to the connecting plates (10) at both ends of the track (1) by bolts or clips.

6. The reciprocating motion drive structure for the transport trolley according to claim 1, characterized in that, The surface of the roller (3) is covered with a polyurethane wear-resistant layer.

7. The reciprocating motion drive structure for the transport trolley according to claim 1, characterized in that, An elastic buffer pad is provided at the initial end of the track (1).

8. The reciprocating motion drive structure for the transport trolley according to claim 1, characterized in that, The motor (7) is a servo motor or a stepper motor.

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