Improved lifting device for goods
By introducing trigger components into the cargo lifting device to automatically control the protective door and power components, the problems of rapid mechanical wear, complex operation, long time consumption and insufficient safety of the existing device are solved, and automated safety protection and accurate unloading are achieved.
Patent Information
- Application Number
- CN202422043811.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-08-22
AI Technical Summary
Existing cargo lifting devices have problems such as rapid mechanical wear, complex operation, long time consumption, high energy consumption and insufficient safety performance. In particular, high-rise cargo lifting requires manual judgment to determine whether it is in place, which poses a safety hazard.
An improved cargo lifting device has been designed, which uses a trigger component to automatically trigger the drive unit to control the opening of the protective door and the pause of the power component. By automatically triggering the component when the lifting unit reaches the unloading position, the protective door can be safely opened and the power component can be accurately stopped.
The safety of the lifting device is improved, the protective door opens automatically, and the power component stops automatically without manual judgment, ensuring that the goods arrive at the unloading location accurately, improving the ease and safety of operation.
Smart Images
Figure CN223303939U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of lifting devices, and in particular to an improved cargo lifting device. Background Art
[0002] A cargo lift is a type of lifting and lowering machinery that allows cargo to be transported between upper and lower levels by manually operating the control system's buttons. Cargo lifts can be categorized by type: scissor-type cargo lifts and rail-type cargo lifts.
[0003] Existing cargo lifts commonly suffer from defects such as rapid mechanical wear, complex and time-consuming operation, high energy consumption, and insufficient safety features. Commercially available lifts lack safety doors, requiring manual operation to maintain pressure on high-rise cargo lifts. Releasing the pressure stops the lift, and upon reaching the corresponding floor, the lift does not automatically stop, requiring manual verification. These defects limit their efficient application in modern logistics systems and pose certain safety risks. Therefore, the market urgently needs a new cargo lift with a more rational structure, simple operation, and enhanced safety. Summary of the Invention
[0004] The purpose of this application is to provide an improved cargo lifting device.
[0005] To achieve the above objectives, the technical solution adopted in this application is: an improved cargo lifting device, used for lifting cargo between multiple layers of decks, including a power component for lifting, a lifting part for loading cargo, and a protective door. The power component is suitable for lifting the lifting part to the deck of the corresponding height. A trigger component and a driving part are provided above each layer of the deck. In the initial state, the driving part extends and limits the protective door; the lifting part lifts and lowers the cargo and passes through the deck to reach the unloading position. During the process, the lifting part acts on the trigger component. When the lifting part reaches the unloading position, the trigger component triggers and controls the driving part to retract.
[0006] As a preferred embodiment, the lifting part includes a trigger part installed on its side, and the trigger assembly has an elastically contractible trigger stroke. When the lifting part is lifted, the trigger part approaches and finally acts on the trigger assembly to activate the trigger stroke. When the lifting part reaches the unloading position, the trigger stroke reaches a maximum value and the trigger assembly is triggered.
[0007] As a preference, the top of the trigger part is provided with an inclined surface for guiding; the trigger assembly includes a travel switch and a slider, the slider is provided with a first elastic reset member, the travel switch includes a second elastic reset member, and the travel switch is electrically connected to the driving part; when the lifting part is lifted, the inclined surface of the trigger part acts on the slider to move the slider and finally acts on the travel switch, and when the lifting part reaches the unloading position, the travel switch is triggered.
[0008] As a preference, the driving part is configured as a cylinder, and in an initial state, the piston rod of the cylinder is extended to limit the movement of the protective door; when the lifting part reaches the unloading position, the cylinder opens and retracts the piston rod, and the restriction of the protective door is released.
[0009] As a preference, the lifting device further comprises guide rails for limiting the movement of the lifting part, and the guide rails are provided at four locations; the protective door is provided on the outside of two adjacent guide rails.
[0010] As a preference, side panels are provided between the guide rails corresponding to the two sides of the protective door, and the trigger assembly is mounted on the side panels; the side panels are U-shaped panels, and the side panels pass through all the layer panels.
[0011] As a preference, the trigger assembly is of a symmetrical structure, the travel switch and the slider are both provided at two locations, and a first elastic reset member is provided between the two sliders.
[0012] As a preference, the power assembly is a chain transmission assembly, a cylinder, a hydraulic cylinder, or a pneumatic-hydraulic hybrid power assembly.
[0013] As a preferred embodiment, thresholds are provided at the top and bottom of the shelf, the protective door is slidably set in the thresholds, the threshold located at the bottom of the shelf is provided with a guide part, the protective door is limited by the threshold and the guide part, and the threshold has a limiting hole corresponding to the position of the driving part, and the driving part enters the limiting hole when extended to limit the protective door.
[0014] As a preference, a connecting assembly is provided on the top of the lifting part, and the connecting assembly is formed by connecting a plurality of rods; a connecting part is provided on the bottom of the power assembly, and the connecting part is connected to the connecting assembly; the trigger part is installed on the connecting assembly, and the trigger part is located within the opening range of the side panel, and the trigger part acts with the trigger assembly inside the side panel.
[0015] Compared with the prior art, the present invention has the following advantages:
[0016] By setting a trigger component, when the lifting part reaches the unloading position, the trigger component can be automatically triggered, thereby releasing the restriction of the protective door by the drive unit. Only then can the protective door slide open. Moreover, when the trigger component is triggered, it can also control the power component to pause, eliminating the need for manual judgment of whether it is in place. While ensuring that the lifting part reaches the unloading position accurately, it can also ensure the safe opening of the protective door. Obviously, the above-mentioned trigger component automatically opens, and without the need for additional transmission components, a control component needs to be set for electronic control. The trigger component is a switch that triggers the electronic control, and the switch automatically opens when the lifting part reaches the predetermined position. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.
[0018] Figure 2 yes Figure 1 Front view of .
[0019] Figure 3 yes Figure 1 Internal structure view.
[0020] Figure 4 It is the structural view of the trigger component.
[0021] Figure 5 It is a structural view that triggers another working state of the component.
[0022] In the figure: 1. Protective door; 2. Shelf; 3. Side panel; 4. Trigger assembly; 5. Door sill; 6. Drive unit; 7. Power assembly; 8. Lifting unit; 9. Connecting assembly; 10. Guide rail; 11. Connecting unit; 12. Trigger unit; 13. Travel switch; 14. Slider; 15. First elastic return member; 16. Second elastic return member; 17. Cylinder. DETAILED DESCRIPTION
[0023] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0024] In the description of this application, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, the directions and positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of this application.
[0025] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.
[0026] The terms "comprises" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.
[0027] Example:
[0028] Reference Figures 1 to 5 This embodiment proposes an improved cargo lifting device for lifting cargo between multiple layers of decks 2, comprising a power assembly 7 for lifting, a lifting portion 8 for loading cargo, and a protective door 1. The power assembly 7 is adapted to lift the lifting portion 8 to a deck 2 at a corresponding height. For ease of control, the cargo lifting device may be provided with a PLC controller for corresponding electric control. Figure 1 As shown, it corresponds to the multiple layers of the shelf, and each layer 2 represents a layer of the shelf. The number of layers 2 can be freely set as needed. The lifting device of this embodiment can be installed in a modular manner. For example, the installed control module (i.e., the above-mentioned PLC), control relays and other accessories adopt a modular design and installation, which makes it easy to install and inspect. In addition, to ensure safety, the entire system of this embodiment can be powered by a low-voltage 24V DC power supply and an emergency stop function can be set to ensure safety during operation.
[0029] like Figure 4As shown, a trigger assembly 4 and a drive unit 6 are provided above each layer 2. In the initial state, the drive unit 6 is extended and limits the protective door 1. The lifting unit 8 is lifted and lowered with cargo and passes through the layer 2 to reach the unloading position. During this process, the lifting unit 8 acts on the trigger assembly 4. When the lifting unit 8 reaches the unloading position, the trigger assembly 4 triggers and controls the drive unit 6 to retract. In this embodiment, the trigger assembly 4 is provided, and when the lifting unit 8 reaches the unloading position, the trigger assembly 4 can be automatically triggered, thereby releasing the restriction of the drive unit 6 on the protective door 1. Only then can the protective door 1 slide open. Moreover, when the trigger assembly 4 is triggered, it can simultaneously control the power assembly 7 to pause, eliminating the need for manual judgment of whether it is in place. While ensuring that the lifting unit 8 accurately reaches the unloading position, it can also ensure the safe opening of the protective door 1. Obviously, the above-mentioned trigger assembly 4 automatically opens. Without the need for an additional transmission assembly, a control assembly needs to be provided for electronic control. The trigger assembly 4 is a switch that triggers the electronic control, and the switch automatically opens when the lifting unit 8 reaches the predetermined position.
[0030] The lifting part 8 can be configured as follows Figure 3 The cargo frame shown can also be a flat panel or other forms.
[0031] The following is a preferred embodiment of the interaction between the trigger assembly 4 and the lifting unit 8: the lifting unit 8 includes a trigger portion 12 installed on its side. The trigger assembly 4 has an elastically contractible trigger stroke. When the lifting unit 8 is lifted, the trigger portion 12 approaches and finally acts on the trigger assembly 4 to start the trigger stroke. When the lifting unit 8 reaches the unloading position, the trigger stroke reaches its maximum value and the trigger assembly 4 is triggered. The trigger portion 12 cannot be set in the lifting space of the lifting unit 8 because the lifting unit 8 itself needs to carry cargo and it occupies a large area of the lifting device cross-section. Therefore, in this embodiment, the trigger portion 12 is set on the side of the lifting unit 8, as shown in FIG. Figure 3 As shown, the lifting device includes guide rails 10 for limiting the movement of the lifting unit 8. The guide rails 10 are provided at four locations; the protective door 1 is located outside two adjacent guide rails 10. A certain gap exists between the two adjacent guide rails 10. The trigger unit 12 is provided on the side of the lifting unit 8, correspondingly in the gap between the guide rails 10. The trigger assembly 4 is also located in this area. Therefore, the trigger unit 12 and the trigger assembly 4 do not interfere with the lifting of the lifting unit 8. Furthermore, by simply positioning the trigger assembly 4 in the appropriate position, the trigger unit 12 can easily trigger the trigger assembly 4 automatically when the lifting unit 8 reaches the corresponding shelf 2.
[0032] Of course, this embodiment provides a guide rail 10 for limiting lifting. For example, when the power component uses a sprocket for lifting, providing the guide rail 10 can improve stability. When the power component is configured as a component such as a cylinder 17, the guide rail 10 can be provided to further increase stability. Alternatively, the guide rail 10 may not be provided and the device can be used normally.
[0033] like Figure 4 As shown, the top of the trigger part 12 is provided with an inclined surface for guiding; the trigger assembly 4 includes a limit switch 13 and a slider 14, the slider 14 is provided with a first elastic reset member 15, the limit switch 13 includes a second elastic reset member 16, and the limit switch 13 is electrically connected to the driving part 6; when the lifting part 8 is lifted, the inclined surface of the trigger part 12 acts on the slider 14, at this time the first elastic reset member 15 is compressed to move the slider 14 and finally act on the limit switch 13, when the lifting part 8 reaches the unloading position, the limit switch 13 is triggered. When the lifting part 8 rises, the trigger part 12 also rises accordingly until the trigger part 12 contacts the slider 14. The trigger part 12 continues to rise, and the slider 14 moves and compresses the second elastic reset member 16 under the action of the inclined surface. At this time, the slider 14 and the travel switch 13 are close and finally contacted. Then the slider 14 causes the travel switch 13 to produce a stroke and finally triggers it, so that the drive part 6 is started, and then the drive part 6 is automatically opened. At this time, the restriction of the protective door 1 is released, and the protective door 1 can be opened. This can prevent the protective door 1 from opening when the lifting part 8 is not in place. At the same time, the protective door 1 can be set as an electric door. The protective door 1 can also open automatically after the drive is turned on and the restriction is released. In conjunction with the unloading or loading mechanism, the process of lifting materials can be realized, and the loading and unloading operations can be automatically performed.
[0034] After the trigger portion 12 has completely passed through the trigger assembly 4, Figure 5 At this time, the first elastic reset member 15 is reset, and the second elastic reset member 16 is also reset, so that the limit switch 13 is closed. At this time, the control drive unit 6 is reset to limit the protective door 1.
[0035] In this embodiment, the first elastic return member 15 and the second elastic return member 16 are preferably springs.
[0036] In this embodiment, the drive unit 6 is preferably configured as a cylinder 17. Initially, the piston rod of the cylinder 17 is extended to restrict the movement of the protective door 1. When the lifting unit 8 reaches the unloading position, the cylinder 17 opens and retracts the piston rod, releasing the restriction on the protective door 1. Of course, the drive unit 6 can also be configured as a common structure such as a screw slide as needed. The principle behind this is easy to understand and will not be further described.
[0037] like Figure 1 、 Figure 3 As shown, side panels 3 are provided between the guide rails 10 corresponding to the two sides of the protective door 1. Here, the two sides of the protective door 1 are as shown in FIG. Figure 1As shown, on the left and right sides of the protective door 1, the side panels 3 are set between the two corresponding guide rails 10 on the left and right sides, and the trigger assembly 4 is installed on the side panels 3; the side panels 3 are U-shaped panels and pass through all the layer panels 2. The side panels 3 can prevent the trigger part 12 and part of the trigger assembly 4 from being exposed to the outside to prevent certain dangers during manual operation; at the same time, the side panels 3 are set in a U shape. Figure 1 The middle part is a right-angled U-shape, and its inner cavity can facilitate the installation of the trigger component 4 and the lifting and lowering of the trigger part 12.
[0038] like Figure 4 As shown, further, the trigger assembly 4 is a symmetrical structure, and the travel switch 13 and the slider 14 are each provided at two locations, and a first elastic reset member 15 is provided between the two sliders 14 (when the slider 14 is provided on only one side, the first elastic reset member 15 also needs to be installed, and its purpose is to enable the trigger part to automatically reset after passing through the slider 14). On this basis, the protective door 1 can also be provided at two locations, and the same applies to the drive unit 6. Therefore, the protective doors 1 on both sides can play the same role. The first elastic reset member 15 can be provided as a spring, and whether the trigger assembly 4 is symmetrical or provided on only one side, its principle remains essentially unchanged, and therefore will not be described in detail.
[0039] The power assembly 7 of this embodiment is a chain transmission assembly or a cylinder 17 or a hydraulic cylinder; the chain transmission assembly, the cylinder 17, and the hydraulic rod are all common drive structures, and their working principles for lifting are relatively simple, so they will not be described in detail.
[0040] like Figure 1 As shown, thresholds 5 are provided at the top and bottom of the shelf 2, and the protective door 1 is slidably set in the thresholds 5. The threshold 5 located at the bottom of the shelf 2 is provided with a guide part, and the protective door 1 is limited by the threshold 5 and the guide part. A limiting hole is provided in the threshold 5 corresponding to the position of the driving part 6. When the driving part 6 is extended, it enters the limiting hole to limit the protective door 1.
[0041] like Figure 3 、 Figure 4 and Figure 5 As shown, the top of the lifting unit 8 is provided with a connecting assembly 9, which is composed of multiple connected rods; the bottom of the power assembly is provided with a connecting portion 11, which is connected to the connecting assembly 9; the trigger unit 12 is installed on the connecting assembly 9 and is located within the opening of the side panel 3. The trigger unit 12 interacts with the trigger assembly 4 within the side panel 3. This ensures that the interaction between the trigger unit 12 and the trigger assembly 4 does not interfere with the normal lifting of the lifting unit 8.
[0042] The above describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.
Claims
1. An improved cargo lifting device for lifting cargo between multiple layers of decks, comprising a power assembly for lifting, a lifting portion for carrying cargo, and a protective door, wherein the power assembly is adapted to lift the lifting portion to the deck at a corresponding height, and characterized in that: A trigger assembly and a driving part are provided above each layer of the shelf. In the initial state, the driving part extends and limits the protective door; the lifting part lifts and lowers with cargo and passes through the shelf to reach the unloading position. During the process, the lifting part acts on the trigger assembly. When the lifting part reaches the unloading position, the trigger assembly triggers and controls the driving part to retract.
2. The improved cargo lifting device according to claim 1, characterized in that: The lifting part includes a trigger part installed on its side. The trigger component has an elastically contractible trigger stroke. When the lifting part is lifted, the trigger part approaches and finally acts on the trigger component to activate the trigger stroke. When the lifting part reaches the unloading position, the trigger stroke reaches the maximum value and the trigger component is triggered.
3. The improved cargo lifting device according to claim 2, characterized in that: The top of the trigger part is provided with an inclined surface for guiding; the trigger assembly includes a travel switch and a slider, the slider is provided with a first elastic reset member, the travel switch includes a second elastic reset member, and the travel switch is electrically connected to the driving part; when the lifting part is lifted, the inclined surface of the trigger part acts on the slider to move the slider and finally acts on the travel switch, and when the lifting part reaches the unloading position, the travel switch is triggered.
4. The improved cargo lifting device according to claim 3, characterized in that: The driving part is configured as a cylinder, and in an initial state, the piston rod of the cylinder is extended to restrict the movement of the protective door; when the lifting part reaches the unloading position, the cylinder opens and retracts the piston rod, and the restriction of the protective door is released.
5. The improved cargo lifting device according to claim 2, characterized in that: It also includes guide rails for limiting the movement of the lifting part, and the guide rails are provided at four locations; the protective door is provided on the outside of two adjacent guide rails.
6. The improved cargo lifting device according to claim 5, characterized in that: A side plate is provided between the guide rails corresponding to the two sides of the protective door, and the trigger assembly is installed on the side plate; the side plate is a U-shaped plate body, and the side plate passes through all the layer plates.
7. The improved cargo lifting device according to claim 3, characterized in that: The trigger assembly has a symmetrical structure. The travel switch and the slider are both provided at two locations. A first elastic reset member is provided between the two sliders.
8. The improved cargo lifting device according to claim 1, characterized in that: The power assembly is a chain transmission assembly, a cylinder, a hydraulic cylinder, or a pneumatic-hydraulic hybrid power assembly.
9. The improved cargo lifting device according to claim 1, characterized in that: Thresholds are provided at the top and bottom of the shelf, and the protective door is slidably set in the thresholds. The threshold located at the bottom of the shelf is provided with a guide part, and the protective door is limited by the threshold and the guide part. The threshold has a limiting hole corresponding to the position of the driving part, and the driving part enters the limiting hole when extended to limit the protective door.
10. The improved cargo lifting device according to claim 6, characterized in that: A connecting assembly is provided at the top of the lifting part, and the connecting assembly is formed by connecting multiple rods; a connecting part is provided at the bottom of the power assembly, and the connecting part is connected to the connecting assembly; the trigger part is installed on the connecting assembly, and the trigger part is located within the opening range of the side panel, and the trigger part acts with the trigger assembly inside the side panel.