Lifting platform capable of preventing overload falling

Abstract

The utility model belongs to the field of lifters, and relates to a lifting platform capable of preventing overload falling, which comprises a lifting platform, the lifting platform comprises a chassis, a hydraulic oil cylinder and a lifting frame, the lifting frame is connected with a plurality of bulges, each bulge is provided with a through hole which is through up and down, a sliding rod is connected in each through hole in a sliding manner, and the lifting platform is connected with the hydraulic oil cylinder. The upper end of the sliding rod is fixedly connected with a supporting plate, a testing frame is arranged on the base plate and comprises a testing plate used for bearing the weight of the supporting plate and goods, a metal rod is connected to the lower portion of the testing plate, a supporting plate is installed on the base plate, and the top end of the supporting plate is connected with a position sensor used for detecting the position of the metal rod.

Description

Technical Field

[0001] This utility model belongs to the field of lifting platforms and relates to a lifting platform that prevents overload falls. Background Technology

[0002] Application CN201920253193.X discloses an overload protection device for a lifting platform, which determines whether the load is overloaded by detecting the vibration generated when overloaded goods enter the platform. However, this technical solution has a serious drawback: when goods enter the platform in multiple stages, the vibration generated is less than that generated when goods enter all at once, making this prior art impractical. Therefore, a new technical solution is urgently needed to replace it. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a lifting platform that prevents overloaded falls.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a lifting platform for preventing overload falls, comprising a lifting platform, a chassis, a hydraulic cylinder, and a lifting frame. The lifting frame is connected to several protrusions, each protrusion having a through hole extending vertically. A sliding rod is slidably connected within the through hole, and a support plate is fixedly connected to the upper end of the sliding rod. A test frame is provided on the chassis, the test frame including a test plate for bearing the weight of the support plate and goods. A metal rod is connected below the test plate. A support plate is installed on the chassis, and a position sensor for detecting the position of the metal rod is connected to the top of the support plate.

[0005] Preferably, the test fixture includes two sleeves, with a test plate connected between the two sleeves.

[0006] Preferably, the sleeve is slidably connected to a support frame for intervening between the test frame and the slide bar, the support frame including a pressure bar pressing against the middle of the test plate.

[0007] Preferably, the chassis is provided with mounting holes, and the support plate is provided with key-shaped holes corresponding to the mounting holes.

[0008] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0009] This invention uses the deformation of a test plate to reflect the weight of the goods carried on the pallet. When the goods are too heavy, the metal rod connected to the middle of the lower surface of the test plate descends to the same level as the position sensor, allowing the position sensor to detect the metal rod and issue an early warning. The structure of this invention is based on an existing lifting platform, with additions, without replacing the existing lifting platform structure. Therefore, this invention is easily assembled and upgraded using existing lifting platforms. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a structural diagram of a lifting platform designed to prevent falls due to overload.

[0012] Figure 2 A lifting platform that prevents overload falls is different from Figure 1 A schematic diagram of the structure of the viewpoint.

[0013] In the above figures, 1. chassis; 2. hydraulic cylinder; 3. lifting frame; 4. protrusion; 5. slide bar; 6. support plate; 7. test plate; 8. metal rod; 9. support plate; 10. position sensor; 11. sleeve; 12. bearing frame; 13. pressure bar; 14. key hole. Detailed Implementation

[0014] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0015] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0016] like Figure 1 , Figure 2 As shown, to prevent the weight of the loaded goods from exceeding the safe lifting and lowering range of the lifting platform, an overload-preventing lifting platform is provided. The lifting platform includes a chassis 1, a hydraulic cylinder 2, and a lifting frame 3. The hydraulic cylinder 2 drives the lifting frame 3 to lift. Several protrusions 4 are connected to the outer side of the lifting frame 3. Each protrusion 4 has a through hole extending vertically. A sliding rod 5 is slidably connected within the through hole. A support plate 6 is fixedly connected to the upper end of the sliding rod 5. The support plate 6 is above the lifting frame 3. A test frame is provided on the chassis 1. The test frame includes a test plate 7 for supporting the weight of the support plate 6 and the goods. A metal rod 8 is connected below the test plate 7. A support plate 9 is installed on the chassis 1. A position sensor 10 for detecting the position of the metal rod 8 is connected to the top of the support plate 9. The position sensor 10 is electrically connected to a controller (not shown in the figure). The controller is electrically connected to a speaker, which is used to issue a warning.

[0017] The detection and early warning method of this utility model is as follows: When the lifting frame 3 is lowered to the lowest point, the lifting frame 3 no longer provides upward support for the pallet 6, but instead the test plate 7 provides it. When goods are loaded on the pallet 6, the test plate 7 bends under pressure, and the metal rod 8 descends. When goods exceeding the lifting range are loaded, the metal rod 8 descends to the same level as the position sensor 10 / proximity switch, so that the position sensor 10 can detect the metal rod 8, thereby transmitting information to the controller, triggering an early warning, and preventing overload and fall.

[0018] Furthermore, the test fixture includes two sleeves 11, with a test plate 7 connected between the two sleeves 11.

[0019] Furthermore, the sleeve 11 is slidably connected to a support frame 12 for intervening between the test frame and the slide rod 5. The support frame 12 includes a pressure rod 13 pressing against the middle of the test plate 7. Multiple slide rods 5 ensure that the support plate 6 can move in the vertical direction. However, since multiple slide rods 5 make multiple contacts with the test plate 7, the deformation of the test plate 7 is not obvious. Therefore, the pressure is concentrated at the contact point between the pressure rod 13 and the test plate 7 by the support frame 12, making the deformation of the test plate 7 more obvious and facilitating observation and testing.

[0020] Furthermore, the chassis 1 is provided with mounting holes, and the support plate 9 is provided with key-shaped holes 14 corresponding to the mounting holes, so that the height of the position sensor 10 can be adjusted.

[0021] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A lifting platform for preventing overload falls, comprising a lifting platform, said lifting platform including a chassis, hydraulic cylinders, and a lifting frame, characterized in that, The lifting frame is connected to several protrusions, each protrusion having a through hole running vertically through it. A sliding rod is slidably connected within the through hole, and a support plate is fixedly connected to the upper end of the sliding rod. A test frame is provided on the chassis, the test frame including a test plate for supporting the weight of the support plate and the goods. A metal rod is connected below the test plate, and a support plate is installed on the chassis. A position sensor for detecting the position of the metal rod is connected to the top of the support plate.

2. The lifting platform for preventing overload falls according to claim 1, characterized in that, The test fixture includes two sleeves, and a test plate is connected between the two sleeves.

3. The lifting platform for preventing overload falls according to claim 2, characterized in that, The sleeve is slidably connected to a support frame for intervening in the test frame and the slide bar, the support frame including a pressure bar that presses against the middle of the test plate.

4. The lifting platform for preventing overload falls according to claim 1, characterized in that, The chassis is provided with mounting holes, and the support plate is provided with key-shaped holes corresponding to the mounting holes.

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