Guardrail for entrance and exit of lifting platform

Abstract

The utility model discloses a lifting platform entrance and exit guardrail, which relates to the field of safety protection equipment, and adopts the technical scheme that the lifting platform entrance and exit guardrail comprises a stand column fixedly arranged on one side of a lifting platform entrance and exit, a groove is formed in one side of the stand column, a guide groove is further formed in the upper part of one side of the groove, and a plurality of groups of shear fork units are arranged in the groove; the plurality of groups of scissor units are hinged with one another through pin shafts to form a synchronous telescopic structure; each group of scissor units comprises two connecting rods which are rotationally connected with each other, one connecting rod of one group of scissor units close to the upright post is rotationally connected with the middle part of the groove, and a sliding block is rotationally arranged at one end of the other connecting rod and slides in the guide groove. The automatic linkage guardrail has the advantages that automatic linkage of the guardrail and the lifting car is achieved through matching of the driving rack, the middle gear and the driven rack, additional manual operation is not needed, and use is convenient; the guardrail state can be automatically adjusted according to the position of the lifting car.

Description

Technical Field

[0001] The utility model relates to the field of safety protection equipment, in particular to an inlet and outlet guardrail of a lifting platform. Background Art

[0002] A lifting platform generally refers to a mechanical device or structure used to lift objects, people or equipment from a lower position to a higher position. It is usually composed of a supporting structure, a lifting mechanism (such as a hydraulic system, chain drive, screw drive, etc.), a lifting car and other parts to achieve stable, safe and efficient lifting operations.

[0003] In feed processing plants, lifting platforms are a commonly used device. However, in actual production environments, since there are no guardrails at the entrances and exits of existing lifting platforms, personnel are prone to close contact and mechanical injury accidents when working on the lifting platforms, or personnel may fall into the foundation pit after the platform is raised, posing a major safety hazard.

[0004] To solve this problem, the factory uses foldable safety isolation fences for protection. It is only closed when loading and unloading, and can be unfolded at other times. It can effectively maintain a safe distance between personnel and the lifting platform, ensuring that no safety accidents occur during the feed processing process.

[0005] However, the foldable safety isolation fence is operated manually. Since many workers have weak safety awareness, are unskilled in operation, or simplify the operation process for convenience, the safety fence may not be folded or unfolded correctly, and thus cannot effectively play its protective role, increasing the risk of safety accidents. Utility Model Content

[0006] In view of the above technical problems, the utility model provides an inlet and outlet guardrail for a lifting platform.

[0007] The technical solution is as follows: a column fixedly arranged on one side of the inlet and outlet of the lifting platform; a groove is provided on one side of the column; a guide groove is provided on the upper part of one side of the groove; a plurality of scissor-type units are arranged in the groove; the plurality of scissor-type units are hinged to each other through pins to form a synchronously retractable structure;

[0008] Each group of the scissor-type units includes two connecting rods rotatably connected to each other, wherein one connecting rod of a group of the scissor-type units close to the column is rotatably connected to the middle of the groove, and a slider is rotatably set at one end of the other connecting rod, and the slider slides in the guide groove.

[0009] Preferably, a driven rack is provided on one side of the column, the driven rack slides up and down along the guide groove, and the upper end of the driven rack is fixedly connected to the slider.

[0010] Preferably, a mounting plate is fixedly provided on the column, an intermediate gear is rotatably provided on the mounting plate, and the intermediate gear is meshed with the driven rack.

[0011] Preferably, a driving rack is fixedly provided on one side of the lift car of the lifting platform through a fixing frame, and when the driving rack contacts the intermediate gear, the driving rack meshes with the intermediate gear.

[0012] The beneficial effects brought about by the technical solution provided by the embodiment of the utility model are: through the cooperation of the active rack, the intermediate gear and the driven rack, the guardrail and the lifting car are automatically linked, no additional manual operation is required, and it is easy to use; the guardrail status can be automatically adjusted according to the position of the lifting car, effectively preventing people from entering or leaving the lifting platform at inappropriate times, thereby ensuring the safety of people. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the usage state of an embodiment of the utility model.

[0014] Figure 2 for Figure 1 An enlarged schematic diagram of part A.

[0015] Figure 3 It is a schematic diagram of the expanded scissor unit in the overall structure of an embodiment of the utility model.

[0016] Figure 4 This is a schematic diagram of the contraction of the scissor unit in the overall structure of an embodiment of the utility model.

[0017] Among them, the figures are marked as: 1. lifting platform; 2. lifting car; 3. column; 4. groove; 5. scissors unit; 6. connecting rod; 7. guide groove; 8. driven rack; 9. mounting plate; 10. intermediate gear; 11. driving rack. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. Of course, the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second" and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0021] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. A person skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0022] Example 1: See Figures 1 to 4 The utility model provides a guardrail for the entrance and exit of a lifting platform, comprising a column 3 fixedly arranged on one side of the entrance and exit of a lifting platform 1, a groove 4 being provided on one side of the column 3, a guide groove 7 being further provided on the upper part of one side of the groove 4, a plurality of groups of scissor units 5 being arranged in the groove 4, and the plurality of groups of scissor units 5 being hinged to each other by pins to form a structure that can be retracted and extended synchronously;

[0023] Each group of scissor lift units 5 includes two connecting rods 6 that are rotatably connected to each other, wherein one connecting rod 6 of a group of scissor lift units 5 close to the column 3 is rotatably connected to the middle of the groove 4, and a slider is rotatably set at one end of the other connecting rod 6, and the slider slides in the guide groove 7.

[0024] A driven rack 8 is provided on one side of the column 3 , and the driven rack 8 slides up and down along the guide groove 7 , and the upper end of the driven rack 8 is fixedly connected to the slider.

[0025] A mounting plate 9 is fixedly provided on the column 3 , an intermediate gear 10 is rotatably provided on the mounting plate 9 , and the intermediate gear 10 is meshed with the driven rack 8 .

[0026] A driving rack 11 is fixedly provided on one side of the lift car 2 of the lifting platform 1 through a fixing frame. When the driving rack 11 contacts the intermediate gear 10 , the driving rack 11 meshes with the intermediate gear 10 .

[0027] When the utility model is used, when the lift car 2 of the lifting platform 1 starts to move downward, the active rack 11 fixed on one side of the lift car 2 rises and falls accordingly; when the active rack 11 descends and approaches the intermediate gear 10, the two mesh with each other, and as the active rack 11 continues to move, it drives the intermediate gear 10 to rotate, and the rotation of the intermediate gear 10 interacts with the driven rack 8, causing the driven rack 8 to slide upward along the guide groove;

[0028] The driven rack 8 drives the slider connected thereto to move in the guide groove while sliding upward, thereby prompting the scissor unit to perform telescopic action, thereby opening the inlet and outlet of the lifting platform 1, making it easier for workers to carry out loading and unloading operations.

[0029] When the lift car 2 of the lifting platform 1 starts to move upward, the active rack 11 fixed on one side of the lift car 2 rises accordingly, thereby driving the intermediate gear 10 to rotate. The rotation of the intermediate gear 10 interacts with the driven rack 8, causing the driven rack 8 to slide downward along the guide groove;

[0030] As the driven rack 8 slides downward, it drives the slider connected to it to move in the guide groove, thereby prompting the scissor unit 5 to unfold. As a result, the inlet and outlet of the lifting platform 1 are closed through the scissor unit 5, which can effectively maintain a safe distance and ensure that no safety accidents occur.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A guardrail for the entrance and exit of a lifting platform, characterized in that: It comprises a column (3) fixedly arranged on one side of the inlet and outlet of the lifting platform (1), a groove (4) is provided on one side of the column (3), a guide groove (7) is further provided on the upper part of one side of the groove (4), a plurality of groups of scissor-type units (5) are arranged in the groove (4), and the plurality of groups of scissor-type units (5) are hinged to each other through pins to form a structure that can be retracted and extended synchronously; Each group of the scissor-type units (5) comprises two connecting rods (6) rotatably connected to each other, wherein one connecting rod (6) of the group of the scissor-type units (5) close to the column (3) is rotatably connected to the middle of the groove (4), and a slider is rotatably provided at one end of the other connecting rod (6), and the slider slides in the guide groove (7).

2. The lifting platform entrance and exit guardrail according to claim 1 is characterized in that: A driven rack (8) is provided on one side of the column (3), and the driven rack (8) slides up and down along the guide groove (7), and the upper end of the driven rack (8) is fixedly connected to the slider.

3. The lifting platform entrance and exit guardrail according to claim 2, characterized in that: A mounting plate (9) is fixedly provided on the upright column (3), an intermediate gear (10) is rotatably provided on the mounting plate (9), and the intermediate gear (10) is meshed with the driven rack (8).

4. The lifting platform entrance and exit guardrail according to claim 3, characterized in that: An active rack (11) is fixedly provided on one side of the lift car (2) of the lifting platform (1) via a fixing frame. When the active rack (11) contacts the intermediate gear (10), the active rack (11) meshes with the intermediate gear (10).

Images