Conveying device

Abstract

The utility model provides a conveying device which comprises a bottom frame and a lifting frame, the lifting frame is arranged on the bottom frame through a lifting mechanism, and walking wheels are further arranged on the bottom frame. The lifting mechanism comprises a guide rail, a cam mechanism and a motor, the guide rail is arranged on the bottom frame in the vertical direction, the lifting frame is arranged on the guide rail in a sliding mode, the cam mechanism is arranged on the bottom frame, a cam of the cam mechanism abuts against the lower surface of the lifting frame, and the motor is in driving connection with the cam mechanism and can drive the cam of the cam mechanism to rotate to upwards jack up the lifting frame. The conveying device is simple in structure, small in occupied space and low in maintenance cost.

Description

Technical Field

[0001] The utility model relates to storage logistics equipment, in particular to a conveying device. Background Art

[0002] In the warehouse logistics system, the conveyor trolley is a key component, especially those trolleys with lifting function. In order to achieve the lifting function, the commonly used lifting mechanisms include hydraulic cylinders and scissor lifts. However, these lifting mechanisms usually take up a large space.

[0003] 1. Hydraulic cylinder: The hydraulic cylinder is lifted and lowered by the pressure of hydraulic oil. It has high load capacity and stability and is suitable for occasions that require precise control and large loads. However, the hydraulic system has more components and occupies a large space.

[0004] 2. Scissor lift mechanism: The scissor lift mechanism uses a scissor-like structure to achieve lifting and lowering, and is usually used in situations where a larger lifting height is required. Although this mechanism has a simple structure and is easy to maintain, it will also take up a large space when it is unfolded. Utility Model Content

[0005] In view of the defects in the prior art, the utility model provides a conveying device with simple structure, small occupied space and low maintenance cost.

[0006] The utility model provides a conveying device, comprising: a base frame and a lifting frame, wherein the lifting frame is arranged on the base frame through a lifting mechanism, and the base frame is also provided with walking wheels;

[0007] The lifting mechanism includes: a guide rail, a cam mechanism and a motor. The guide rail is arranged on the base frame in a vertical direction. The lifting frame is slidably arranged on the guide rail. The cam mechanism is arranged on the base frame. The cam of the cam mechanism is against the lower surface of the lifting frame. The motor is drivingly connected to the cam mechanism and can drive the cam of the cam mechanism to rotate and lift the lifting frame upward.

[0008] The working principle of a conveying device provided by the utility model is as follows: the lifting frame is lifted upward by the rotation of the cam, thereby realizing the lifting function, having a simple structure, small occupied space and low maintenance cost.

[0009] According to an embodiment of the present invention, the cam mechanism further comprises: a connecting rod and a driving plate, wherein the connecting rod is connected between the cam and the driving plate, and the output shaft of the motor is drivingly connected to the driving plate.

[0010] According to an embodiment of the present invention, the cam mechanisms are two sets that are symmetrical on the left and right, and the two sets of cam mechanisms share a motor and a drive disk.

[0011] According to an embodiment of the present invention, a detachable lifting base is provided at the lower end of the lifting frame, and the cam abuts against the lower end of the lifting base.

[0012] According to an embodiment provided by the utility model, the cam switches between a lifting position and a loosening position. When the cam is in the lifting position, the position state of the cam is a negative angle, and the extension line of the connecting rod passes through the rotation axis of the driving disk.

[0013] According to an embodiment of the present invention, a block for limiting the maximum reverse rotation angle of the cam is further provided on the base frame, and when the cam is in the top-lifting position, the block abuts against the side of the cam rotating in the reverse direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0015] Figure 1 This is a schematic structural diagram of a conveying device provided in one embodiment of the utility model.

[0016] Description of Reference Numerals

[0017] 1-base, 2-lifting frame, 3-guide rail, 4-travel wheel, 5-cam, 6-connecting rod, 7-driving disc, 8-motor, 9-lifting base. DETAILED DESCRIPTION

[0018] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0019] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0020] Reference Figure 1 The present embodiment provides a conveying device, comprising: a base frame 1 and a lifting frame 2, wherein the lifting frame 2 is arranged on the base frame 1 through a lifting mechanism, and the base frame 1 is also provided with walking wheels 4;

[0021] The lifting mechanism includes: a guide rail 3, a cam mechanism and a motor 8. The guide rail 3 is arranged on the base frame 1 in the vertical direction. The lifting frame 2 is slidably arranged on the guide rail 3. The cam mechanism is arranged on the base frame 1. The cam 5 of the cam mechanism is against the lower surface of the lifting frame 2. The motor 8 is connected to the cam mechanism and can drive the cam 5 of the cam mechanism to rotate and lift the lifting frame 2 upward.

[0022] The lifting frame 2 is lifted upward by the rotation of the cam 5, thereby realizing the lifting function, which has a simple structure, small occupied space and low maintenance cost.

[0023] Specifically, the cam mechanism further includes: a connecting rod 6 and a driving plate 7, the connecting rod 6 is connected between the cam 5 and the driving plate 7, and the output shaft of the motor 8 is drivingly connected to the driving plate 7. When lifting, the motor 8 drives the driving plate 7 to rotate, thereby driving the cam 5 to swing through the connecting rod 6, and lifting the lifting frame 2 upward.

[0024] In this embodiment, the cam mechanisms are two sets of symmetrical left and right cam mechanisms, and the two sets of cam mechanisms share a motor 8 and a drive disk 7. The shared drive disk 7 enables the two sets of cam mechanisms to act synchronously and operate stably.

[0025] The lower end of the lifting frame 2 is provided with a detachable lifting base 9, and the cam 5 abuts against the lower end of the lifting base 9. The lifting base 9 is connected to the lifting frame 2 by bolts, and as the contact surface of the cam 5, wear-resistant materials can be used, and lubricating grease can be applied, and it is easy to replace after damage, and the maintenance cost is low.

[0026] More specifically, the cam 5 switches between the lifting position and the releasing position. When the cam 5 is in the lifting position, the position state of the cam 5 is a negative angle, and the extension line of the connecting rod 6 passes through the rotation axis of the driving plate 7. When the cam 5 is at the highest point, the position state of the cam 5 is 0 degrees, and the rotation toward the driving plate 7 is a positive rotation. When the cam 5 is in the releasing position, the position state of the cam 5 is greater than 0 degrees and less than 90 degrees. The driving plate 7 rotates, driving the cam 5 to rotate in the opposite direction. After passing the highest point of the cam 5, it continues to rotate and finally reaches the lifting position. When in the lifting position, the position state of the cam 5 is a negative angle.

[0027] When the cam 5 is in the jacking position, the extension line of the connecting rod 6 passes through the rotation axis of the driving disk 7, that is, the connecting rod 6, the hinge point between the connecting rod 6 and the driving disk 7, and the rotation center of the driving disk 7 are in the same line. Under the action of gravity, self-locking is achieved, and at the same time, the torque of the connecting rod 6 on the driving disk 7 is 0, thereby avoiding long load time of the motor 8 and extending the service life.

[0028] In another embodiment, a stopper is further provided on the base frame 1 for limiting the maximum reverse rotation angle of the cam 5. When the cam 5 is in the top-up position, the stopper abuts against the reverse rotation side of the cam 5. The stopper locks the position of the lifting frame 2 to prevent the lifting frame 2 from falling due to damage to the connecting rod 6.

[0029] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0030] In the description of this specification, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A conveying device, characterized in that: include: A base frame (1) and a lifting frame (2), wherein the lifting frame (2) is arranged on the base frame (1) via a lifting mechanism, and the base frame (1) is also provided with walking wheels (4); The lifting mechanism comprises: a guide rail (3), a cam mechanism and a motor (8); the guide rail (3) is arranged on the base frame (1) in a vertical direction; the lifting frame (2) is slidably arranged on the guide rail (3); the cam mechanism is arranged on the base frame (1); a cam (5) of the cam mechanism abuts against a lower surface of the lifting frame (2); and the motor (8) is drivingly connected to the cam mechanism and can drive the cam (5) of the cam mechanism to rotate and lift the lifting frame (2) upward.

2. A conveying device according to claim 1, characterized in that: The cam mechanism further comprises: a connecting rod (6) and a driving disk (7); the connecting rod (6) is connected between the cam (5) and the driving disk (7); and the output shaft of the motor (8) is drivingly connected to the driving disk (7).

3. A conveying device according to claim 2, characterized in that: The cam mechanisms are composed of two sets that are symmetrical on the left and right, and the two sets of cam mechanisms share a motor (8) and a drive disk (7).

4. A conveying device according to claim 2, characterized in that: A detachable lifting base (9) is provided at the lower end of the lifting frame (2), and the cam (5) abuts against the lower end of the lifting base (9).

5. A conveying device according to claim 2, characterized in that: The cam (5) switches between a lifting position and a loosening position. When the cam (5) is in the lifting position, the position state of the cam (5) is a negative angle, and the extension line of the connecting rod (6) passes through the rotation axis of the driving disk (7).

6. A conveying device according to claim 2, characterized in that: The base frame (1) is also provided with a block for limiting the maximum reverse rotation angle of the cam (5); when the cam (5) is in the top-lifting position, the block abuts against the side of the cam (5) rotating in the reverse direction.

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