Telescopic lifting loading and unloading platform

Abstract

The utility model provides a telescopic lifting loading and unloading platform. The telescopic lifting loading and unloading platform comprises a base, a bearing platform, a variable-amplitude oil cylinder, a control box and a control switch. The base is arranged in a reserved pit in the ground of a building structure. The side end of the bearing platform is hinged to the top end of the base. One opposite end of the variable-amplitude oil cylinder is hinged to the middle of the base, and the other opposite end of the variable-amplitude oil cylinder is hinged to the bottom end of the bearing platform; the control switch is arranged on the bearing platform; the control switch comprises a sealed transparent container, an electrode is arranged in the transparent container, the electrode is close to one end of the transparent container, and the electrode is electrically connected with the control box through a wire; and a conducting medium is arranged in the transparent container and can slide in the transparent container to be in contact with or separated from the electrode. The telescopic lifting loading and unloading platform is low in failure rate, convenient to install and debug and capable of avoiding personnel dangerous accidents.

Description

Technical Field

[0001] The present application relates to the technical field of logistics equipment, and in particular to a telescopic lifting and unloading platform. Background Art

[0002] The telescopic lifting and unloading platform is a key equipment for the loading and unloading port of the modern cold chain logistics platform. It can realize the seamless logistics connection between the platform and the vehicle. All loading and unloading forklifts can directly enter the car for loading and unloading through the telescopic lifting and unloading platform.

[0003] The telescopic lifting platform has four actions: rising, falling, extending and retracting. All functions of the telescopic lifting platform are realized through these actions. Among them, the extension and retraction actions require the main panel to change its amplitude to a certain angle before the sling can be extended and connected to the car, so the amplitude change angle of the main panel needs to be detected.

[0004] At present, the detection of amplitude angle mostly adopts mechanical travel switch, which realizes the opening and closing of contacts by pushing the built-in elastic switch through the swing arm. Because the opening and closing action is mechanical, the over-position of the mechanical travel switch can easily cause damage to the contacts. In addition, the failure rate of the mechanical contacts is very high due to repeated use of the travel switch, and the internal spring device will also increase the failure rate due to fatigue, resulting in a high failure rate of the entire telescopic lifting platform. Moreover, the mechanical travel switch is installed on the back side of the platform, which not only has high maintenance costs, but also makes the installation, debugging and adjustment of the equipment inconvenient. It requires two people to cooperate, one of whom climbs to the bottom of the equipment for debugging, which is also easy to cause personnel accidents. Utility Model Content

[0005] The embodiment of the present application provides a telescopic lifting and loading and unloading platform, including a base, a load-bearing platform, a variable-length oil cylinder, a control box, and a control switch;

[0006] The base is arranged in a reserved pit on the ground of the building structure, and the side end of the bearing platform is hinged to the top end of the base; the opposite end of the amplitude cylinder is hinged to the middle part of the base, and the opposite other end of the amplitude cylinder is hinged to the bottom end of the bearing platform;

[0007] The control switch is arranged on the carrying platform; the control switch includes a sealed transparent container, an electrode is arranged in the transparent container, the electrode is close to one end of the transparent container, and the electrode is electrically connected to the control box through a wire; a conductive medium is arranged in the transparent container, and the conductive medium can slide in the transparent container until it contacts or separates from the electrode.

[0008] The embodiment of the present application provides a telescopic lifting and loading and unloading platform, which uses the sliding characteristics and conductivity of the conductive medium to turn the electrode on or off, and the electrode can be turned on / off without any mechanical action. During installation and debugging, it is only necessary to first raise the bearing platform to the highest position, rotate the transparent container at an angle so that the conductive medium can just pour to the lower end to the end where the electrode is located, turn on the electrode, output the signal, and then fix the transparent container. Because the transparent container is visible, debugging can be performed by observing the position of the conductive medium in the transparent container, which is very convenient and can avoid dangerous accidents to personnel.

[0009] In the subsequent operation of the equipment, as the carrying platform rises, the electrode opening and closing signals will be accurately provided at the set position. When the carrying platform descends, the conductive medium will quickly leave the electrode due to the increase in the lower end of the inclination angle, and the electrode will be disconnected, thereby realizing the entire operation process. The control switch completely relies on its own sliding characteristics and the effect of gravity to realize the electrode opening and closing function, without causing switch over-position and metal fatigue, and can be used for a long time without trouble.

[0010] In one possible implementation manner, the telescopic lifting and unloading platform provided in the embodiment of the present application comprises a bearing frame, a telescopic frame, a main panel, a strap and a telescopic cylinder; the main panel is arranged on the bearing frame, and the strap is arranged on the telescopic frame;

[0011] The side end of the supporting frame is hinged to the top end of the base, the amplitude-changing cylinder is hinged to the bottom end of the supporting frame, the telescopic frame is slidably arranged below the supporting frame, one opposite end of the telescopic cylinder is connected to the supporting frame, and the other opposite end of the telescopic cylinder is connected to the telescopic frame.

[0012] In one possible implementation manner, the telescopic lifting and unloading platform provided in the embodiment of the present application has a vertical leg provided on the base, and the bottom end of the leg is connected to the base; the leg is located below the slat and on the relatively outer side of the boom cylinder.

[0013] In one possible implementation manner, in the telescopic lifting and unloading platform provided in the embodiment of the present application, the conductive medium is a conductive fluid.

[0014] In one possible implementation manner, in the telescopic lifting and unloading platform provided in an embodiment of the present application, the conductive fluid includes mercury.

[0015] In one possible implementation manner, in the telescopic lifting and unloading platform provided in the embodiment of the present application, the conductive medium is a metal ball.

[0016] In one possible implementation manner, in the telescopic lifting and unloading platform provided in the embodiment of the present application, the conductive medium is conductive powder.

[0017] In one possible implementation manner, in the telescopic lifting and unloading platform provided in an embodiment of the present application, the conductive powder is metal powder or carbon-based powder.

[0018] In one possible implementation manner, in the telescopic lifting and unloading platform provided in the embodiment of the present application, the transparent container is in the shape of a circular tube.

[0019] In one possible implementation manner, in the telescopic lifting and unloading platform provided in the embodiment of the present application, the transparent container is a transparent glass tube or a transparent plastic tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 is a schematic diagram of a telescopic lifting and unloading platform provided in an embodiment of the present application (in a retracted state);

[0022] Figure 2 is a schematic diagram of a telescopic lifting and unloading platform provided in an embodiment of the present application (in an extended state);

[0023] Figure 3 yes Figure 1 The enlarged schematic diagram of point A in the middle;

[0024] Figure 4 is a schematic diagram of the control switch (retracted state);

[0025] Figure 5 is a schematic diagram of the control switch (extended state);

[0026] Description of reference numerals:

[0027] 10- base;

[0028] 11- Legs;

[0029] 20-carrying platform;

[0030] 21-carrying frame;

[0031] 22- telescopic frame;

[0032] 23- Main panel;

[0033] 24-planking;

[0034] 25- telescopic cylinder;

[0035] 30-luffing cylinder;

[0036] 40-control box;

[0037] 50-control switch;

[0038] 51- transparent container;

[0039] 52-conductive medium;

[0040] 53-electrode;

[0041] 54- conductor wire;

[0042] 60-Building structure;

[0043] 60a-Reserved pit space. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0045] Figure 1 is a schematic diagram of a telescopic lifting and unloading platform provided in an embodiment of the present application (in a retracted state);

[0046] Figure 2 is a schematic diagram of a telescopic lifting and unloading platform provided in an embodiment of the present application (in an extended state);

[0047] Figure 3 yes Figure 1 The enlarged schematic diagram of point A in the middle; Figure 4 is a schematic diagram of the control switch (retracted state); Figure 5 This is a schematic diagram of the control switch (extended state).

[0048] See also Figure 1-Figure 5 As shown, the embodiment of the present application provides a telescopic lifting and unloading platform, including a base 10, a bearing platform 20, a variable amplitude oil cylinder 30, a control box 40 and a control switch 50, wherein:

[0049] The base 10 is arranged in a reserved pit 60a on the ground of the building structure 60, and the side end of the carrying platform 20 is hinged to the top of the base 10. One opposite end of the luffing cylinder 30 is hinged to the middle of the base 10, and the other opposite end of the luffing cylinder 30 is hinged to the bottom end of the carrying platform 20, and the carrying platform 20 is rotated by the extension / retraction action of the luffing cylinder 30.

[0050] See also Figure 4 and Figure 5 As shown, the control switch 50 is arranged on the carrying platform 20, and the control switch 50 includes a sealed transparent container 51, and an electrode 53 is arranged in the transparent container 51, and the electrode 53 is close to one end of the transparent container 51, and the electrode 53 is electrically connected to the control box 40 through a wire 54. A conductive medium 52 is arranged in the transparent container 51, and the conductive medium 52 can slide in the transparent container 51 to contact or separate with the electrode 53, so as to provide the on / off signal of the electrode 53 to the control box 40.

[0051] Since the conductive medium 52 can slide in the transparent container 51, the sliding characteristics and conductivity of the conductive medium 52 can be used to turn on or off the electrode 53, and the electrode 53 can be turned on / off without any mechanical action. During installation and debugging, it is only necessary to first raise the carrying platform 20 to the highest position, rotate the transparent container 51 at an angle so that the conductive medium 52 can just pour to the lower end to the end where the electrode 53 is located, turn on the electrode 53, output a signal, and then fix the transparent container 51. Because the transparent container 51 is visible, debugging can be performed by observing the position of the conductive medium 52 in the transparent container 51, which is very convenient and can avoid dangerous accidents to personnel.

[0052] In the subsequent operation of the equipment, as the carrying platform 20 rises, the electrode 53 opening and closing signals will be accurately provided at the set position. When the carrying platform 20 descends, the conductive medium 52 will quickly leave the electrode 53 due to the increase in the lower end of the inclination angle, and the electrode 53 will be disconnected, thereby realizing the entire operation process. The control switch 50 completely relies on its own sliding characteristics and the action of gravity to realize the opening and closing function of the electrode 53, without causing switch over-position and metal fatigue, and can be used for a long time without trouble.

[0053] See also Figure 3 As shown, specifically, the bearing platform 20 includes a bearing frame 21, a telescopic frame 22, a main panel 23, a strap 24 and a telescopic cylinder 25. The main panel 23 is arranged on the bearing frame 21, and the strap 24 is arranged on the telescopic frame 22. The side end of the bearing frame 21 is hinged to the top end of the base 10, the amplitude cylinder 30 is hinged to the bottom end of the bearing frame 21, the telescopic frame 22 is slidably arranged below the bearing frame 21, one opposite end of the telescopic cylinder 25 is connected to the bearing frame 21, and the other opposite end of the telescopic cylinder 25 is connected to the telescopic frame 22. The telescopic frame 22 is extended and retracted by the extension / retraction action of the telescopic cylinder 25.

[0054] A vertical leg 11 is provided on the base 10, the bottom end of the leg 11 is connected to the base 10, and the leg 11 is located below the butt plate 24 and relatively outside the luffing cylinder 30. When the carrying platform 20 is in the retracted state, the front end of the carrying platform 20 rests on the leg 11, and a part of the weight is borne by the leg 11, thereby reducing the force on the luffing cylinder 30.

[0055] Specifically, the transparent container 51 is in the shape of a round tube, such as a transparent glass tube or a transparent plastic tube, which has high transparency, good stability and durability.

[0056] In the embodiment of the present application, the conductive medium 52 may be a conductive fluid. For example, mercury is used as the conductive fluid, and mercury is very suitable as the conductive medium 52 due to its good fluidity and good conductivity.

[0057] In addition, the conductive medium 52 can also be a metal ball. The conductive medium 52 can be a larger metal ball or a plurality of small balls. The balls can contact or separate from the electrode 53 by rolling in the transparent container 51 .

[0058] Furthermore, the conductive medium 52 may also be conductive powder, for example, metal powder or carbon-based powder, and the powder may be in contact with or separated from the electrode 53 by utilizing the fluidity of the powder in the transparent container 51 .

[0059] In the description of the embodiments of the present application, it should be understood that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. The orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0060] The terms "first", "second", "third", "fourth", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein. For example, it can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application 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 with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A telescopic lifting loading and unloading platform, characterized in that: It includes a base, a bearing platform, a luffing cylinder, a control box and a control switch; The base is arranged in a reserved pit on the ground of the building structure, and the side end of the bearing platform is hinged to the top end of the base; the opposite end of the amplitude cylinder is hinged to the middle part of the base, and the opposite other end of the amplitude cylinder is hinged to the bottom end of the bearing platform; The control switch is arranged on the carrying platform; the control switch includes a sealed transparent container, an electrode is arranged in the transparent container, the electrode is close to one end of the transparent container, and the electrode is electrically connected to the control box through a wire; a conductive medium is arranged in the transparent container, and the conductive medium can slide in the transparent container until it contacts or separates from the electrode.

2. The telescopic lifting and unloading platform according to claim 1, characterized in that: The bearing platform comprises a bearing frame, a telescopic frame, a main panel, a strap and a telescopic cylinder; the main panel is arranged on the bearing frame, and the strap is arranged on the telescopic frame; The side end of the supporting frame is hinged to the top end of the base, the amplitude-changing cylinder is hinged to the bottom end of the supporting frame, the telescopic frame is slidably arranged below the supporting frame, one opposite end of the telescopic cylinder is connected to the supporting frame, and the other opposite end of the telescopic cylinder is connected to the telescopic frame.

3. The telescopic lifting and unloading platform according to claim 2, characterized in that: The base is provided with vertical legs, the bottom ends of which are connected to the base; the legs are located below the buttresses and on the relatively outer sides of the boom cylinders.

4. The telescopic lifting and unloading platform according to any one of claims 1 to 3, characterized in that: The conductive medium is a conductive fluid.

5. The telescopic lifting and unloading platform according to claim 4, characterized in that: The conductive fluid includes mercury.

6. The telescopic lifting loading and unloading platform according to any one of claims 1 to 3, characterized in that: The conductive medium is a metal ball.

7. The telescopic lifting and unloading platform according to any one of claims 1 to 3, characterized in that: The conductive medium is conductive powder.

8. The telescopic lifting loading and unloading platform according to claim 7, characterized in that: The conductive powder is metal powder or carbon-based powder.

9. The telescopic lifting and unloading platform according to any one of claims 1 to 3, characterized in that: The transparent container is in the shape of a circular tube.

10. The telescopic lifting loading and unloading platform according to claim 9, characterized in that: The transparent container is a transparent glass tube or a transparent plastic tube.

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