A modular guard for a portal crane

Abstract

The utility model provides a kind of portal crane is used module type guardrail to be dismantled, it is related to guardrail technical field, including pedestal one and first module guardrail, first module guardrail is detachably installed in the rear end of pedestal one;It further includes second module guardrail, two second module guardrails are respectively detachably installed in the left and right ends of pedestal one, and two second module guardrails and first module guardrail constitute U-shaped side fence structure;Or, it further includes third module guardrail, two third module guardrails are respectively detachably installed in the left and right ends of pedestal one, and third module guardrail includes pedestal two and the U-shaped guardrail body being set on pedestal two, pedestal two and pedestal one horizontal butt joint, and the length direction of pedestal two is perpendicular to the length direction of pedestal one, the U-shaped opening direction of two U-shaped guardrail bodies is oppositely arranged.The guardrail can be suitable for different support leg of portal crane, and effectively improve the installation and dismantling efficiency, save installation and dismantling cost, reduce safety risk and can be reused.

Description

Technical Field

[0001] This utility model relates to the field of guardrail technology, and more specifically, to a modular guardrail for the installation and dismantling of gantry cranes. Background Technology

[0002] Gantry cranes are multi-action lifting machines used to vertically lift and horizontally move heavy objects. They are mainly suitable for open outdoor areas. The outriggers of a gantry crane include one rigid leg and two flexible legs. During the installation and dismantling of gantry cranes, the installation and dismantling of the outriggers and cable trays are the most dangerous. In the power construction industry, their installation and dismantling operations are considered high-risk sub-projects. During the installation and dismantling of the gantry crane cable trays and outriggers, the cable trays are usually 16m-20m above the ground. A slight mistake could result in a fall from height and injury. Therefore, the role of guardrails is extremely important during the installation and dismantling of gantry cranes.

[0003] In existing gantry crane installation and dismantling operations, scaffolding is typically erected using scaffold pipes and boards as temporary guardrails. This requires collaboration among multiple departments and necessitates erection, monitoring, and inspection before each use, as well as dismantling after installation. This results in low efficiency, high cost, and safety risks associated with gantry crane installation and dismantling. Utility Model Content

[0004] This utility model aims to solve the problems of low installation and dismantling efficiency, high cost, safety issues, and high risks associated with existing gantry cranes.

[0005] To solve the above problems, this utility model provides a modular guardrail for the installation and dismantling of a gantry crane, including a base and a first modular guardrail, wherein the first modular guardrail is detachably installed at the rear end of the base. It also includes a second module guardrail, two of which are detachably installed at the left and right ends of the base one, and the two second module guardrails and the first module guardrail form a U-shaped side rail structure; or, it also includes a third module guardrail, two of which are detachably installed at the left and right ends of the base one, and the third module guardrail includes a base two and a U-shaped guardrail body disposed on the base two, the base two is horizontally connected to the base one, and the length direction of the base two is perpendicular to the length direction of the base one, and the U-shaped openings of the two U-shaped guardrail bodies are arranged opposite each other.

[0006] The modular guardrail for installing and dismantling gantry cranes provided by this utility model has the following advantages compared to the prior art: The modular guardrails used for installing and dismantling this gantry crane are divided into two types: "rigid leg guardrails" and "flexible leg guardrails," depending on the type of outriggers. "Flexible Leg Guardrail": Based on base one, the first module guardrail is installed at the rear end of base one, and then the second module guardrail is installed at the left and right ends of base one respectively, so that the two second module guardrails and the first module guardrail form a U-shaped side rail structure to protect the safety of workers when working on the guardrail, thus making it convenient for this guardrail to be used in the installation and dismantling of the bridge frame and flexible leg of the existing gantry crane. "Rigid Leg Guardrail": Similarly, based on base one, the first module guardrail is installed at the rear end of base one. Then, base two is installed horizontally on both the left and right ends of base one, ensuring that the length direction of base two is perpendicular to the length direction of base one. Then, U-shaped guardrail bodies are installed on the two base two, with the U-shaped openings of the two U-shaped guardrail bodies facing each other. Together with the first module guardrail, they provide safety protection for workers when working on the guardrail. Workers can move back and forth between base one and base two, making the working range larger. This makes it easier for this guardrail to be used on existing gantry cranes during the installation and dismantling of the bridge frame and rigid legs. The "rigid leg guardrail" and "flexible leg guardrail" are suitable for the disassembly and assembly of various models of gantry crane legs (rigid and flexible legs). They can be quickly installed and disassembled, with simple and reliable structure, greatly enhanced functionality, and wide applicability. They can save companies the installation and disassembly costs of gantry cranes, improve installation and disassembly efficiency, reduce safety risks, and are reusable, convenient and quick. After disassembly, they are easy to transport.

[0007] Furthermore, ear seat one and ear seat two are welded to the front end of the base one.

[0008] Furthermore, fixed columns are symmetrically arranged on the left and right sides of the front end of the base one, and the bottom end of the fixed columns is connected to the ear seat one through a pin and an ear pin.

[0009] Furthermore, each of the ear seat 1, ear seat 2, and fixed column is provided with an insertion through hole 1 that is engaged with the pin.

[0010] Furthermore, the insertion end of the pin is provided with a locking through hole that cooperates with the lug pin.

[0011] Furthermore, a fixing column is welded to the top of both the first base and the second base.

[0012] Furthermore, a male ear plate 2 is welded to the top of the second base close to the side of the first base, and ear seats 3 are fixedly connected to the top left and right sides of the first base. The male ear plate 2 and ear seats 3 are detachably connected by pins and ear pins.

[0013] Furthermore, both the male ear plate 2 and the ear seat 3 are provided with through holes 2 that are inserted and engaged with the pin.

[0014] Furthermore, both the first base and the second base are made by welding square tubes and angle iron.

[0015] Furthermore, the U-shaped guardrail body is made of welded round tubes. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a modular guardrail for installing and dismantling a gantry crane according to the present invention; Figure 2 This is a structural schematic diagram of another modular guardrail for installing and dismantling a gantry crane according to this utility model; Figure 3 For the present utility model Figure 1 Top view; Figure 4 For the present utility model Figure 2 Top view; Figure 5 For the present utility model Figure 4 A partial schematic diagram; Figure 6 For the present utility model Figure 1 A schematic diagram of the structure of base one; Figure 7 For the present utility model Figure 2 A schematic diagram of the structure of base one; Figure 8 This is a schematic diagram showing the connection state between the pin and the lug of this utility model; Figure 9 This is a schematic diagram of the structure of the fixing column of this utility model.

[0017] Explanation of reference numerals in the attached figures: 1. Base 1; 2. First Module Fence; 3. Third Module Fence; 301. U-shaped Fence Body; 302. Base 2; 303. Male Ear Plate 2; 304. Ear Seat 3; 305. Through Hole 2; 4. Fixed Post; 5. Ear Seat 1; 6. Ear Seat 2; 7. Male Ear Plate 1; 8. Pin; 801. Locking Through Hole; 9. Ear Pin; 10. Fixed Post; 11. Second Module Fence; 12. Through Hole 1. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings showing multiple embodiments according to this application. It should be understood that the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort will fall within the scope of protection of this application.

[0019] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in the description of this application is for the purpose of describing specific embodiments only and is not intended to limit the use of open-ended terms such as "comprising," "including," "having," "containing," etc., in the description, claims, and accompanying drawings. Therefore, "comprising," "including," or "having" refers to, for example, a method or apparatus having one or more steps or elements, but not limited to having only these one or more elements. The terms "first," "second," etc., in the description, claims, or accompanying drawings are used to distinguish different objects, not to describe a specific order or hierarchy. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, in the attached diagram, the X-axis represents the vertical direction, that is, the front-to-back position, and the positive direction of the X-axis (that is, the direction the arrow points to) represents the front, and the negative direction of the X-axis (that is, the direction opposite to the positive direction of the X-axis) represents the back. In the attached diagram, the Y-axis represents the horizontal direction, that is, the left-to-right position, and the positive direction of the Y-axis (that is, the direction the arrow points to) represents the left, and the negative direction of the Y-axis (that is, the direction opposite to the positive direction of the Y-axis) represents the right. In the attached diagram, the Z-axis represents the vertical direction, that is, the up-to-down position, and the positive direction of the Z-axis (that is, the direction the arrow points to) represents the up, and the negative direction of the Z-axis (that is, the direction opposite to the positive direction of the Z-axis) represents the down.

[0022] It should also be noted that the aforementioned X-axis, Y-axis and Z-axis are only for the purpose of facilitating the description of this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can be a direct connection or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] It should be emphasized that when the term "comprising / including" is used in this specification, it is used to explicitly indicate the presence of the stated feature, integer, step, or component, but does not exclude the presence or addition of one or more other features, integers, steps, parts, or groups of features, integers, steps, or parts.

[0025] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0026] See Figure 1 and Figure 2 A modular guardrail for installing and dismantling a gantry crane according to an embodiment of the present invention includes a base 1 and a first modular guardrail 2, wherein the first modular guardrail 2 is detachably installed at the rear end of the base 1. It also includes a second module guardrail 11, with two second module guardrails 11 detachably installed at the left and right ends of the base 1, and the two second module guardrails 11 and the first module guardrail 2 forming a U-shaped side rail structure; or, it also includes a third module guardrail 3, with two third module guardrails 3 detachably installed at the left and right ends of the base 1, and the third module guardrail 3 includes a second base 302 and a U-shaped guardrail body 301 set on the second base 302. The second base 302 is horizontally connected to the base 1, and the length direction of the second base 302 is perpendicular to the length direction of the base 1. The U-shaped openings of the two U-shaped guardrail bodies 301 are arranged opposite each other.

[0027] In this embodiment, the modular guardrail for the installation and dismantling of the gantry crane is divided into "rigid leg guardrail" and "flexible leg guardrail" according to the different legs of the gantry crane: "Flexible leg guardrail": Based on the base 1, the first modular guardrail 2 is installed at the rear end of the base 1, and then the second modular guardrail 11 is installed at the left and right ends of the base 1 respectively, so that the two second modular guardrails 11 and the first modular guardrail 2 form a U-shaped side rail structure to protect the safety of the workers when working on the guardrail, thereby facilitating the use of this guardrail in the installation and dismantling of the bridge frame and flexible legs of the existing gantry crane; "Rigid Leg Guardrail": Similarly, based on base 1, the first module guardrail 2 is installed at the rear end of base 1. Then, base 2 302 is installed horizontally on both the left and right ends of base 1, ensuring that the length direction of base 2 302 is perpendicular to the length direction of base 1. Then, U-shaped guardrail bodies 301 are installed on the two base 2 302 respectively, with the U-shaped openings of the two U-shaped guardrail bodies 301 facing each other. Together with the first module guardrail 2, they provide safety protection for workers when working on the guardrail. Workers can move back and forth between base 1 and base 2 302, making the working range larger. This makes it easier for this guardrail to be used on existing gantry cranes during the installation and dismantling of bridge frames and rigid legs.

[0028] In summary, this modular guardrail for gantry crane installation and dismantling utilizes a modular structure and employs both "rigid leg guardrails" and "flexible leg guardrails" to accommodate the installation and dismantling of various gantry crane outriggers (rigid and flexible legs). It allows for selection of any guardrail type based on actual usage requirements, enabling quick installation and dismantling. Its simple and reliable structure significantly enhances functionality and broad applicability, saving companies on gantry crane installation and dismantling costs, improving efficiency, reducing safety risks, and offering reusability and convenience. Furthermore, it facilitates transportation after dismantling. In actual use, once the guardrail is installed, it can save 10-22 hours or more per installation and dismantling cycle. Additionally, it saves over 8,000 yuan in platform scaffolding erection costs per operation, significantly reducing the overall installation and dismantling costs for gantry cranes.

[0029] See Figure 3 , Figure 4 and Figure 5 Optionally, ear seat 5 and ear seat 6 are welded to the front end of base 1.

[0030] In this embodiment, when using this guardrail, at a location where the gantry crane bridge and outriggers are easily connected for installation and disassembly, several male head lugs 7 are first welded onto one side of the outrigger. The male head lugs 7 are then installed by correspondingly inserting them into the lug seats 6. Then, pins 8 are inserted into the insertion joints, and lugs 9 are inserted into each pin 8. This achieves the installation and fixation of the guardrail on one side of the outrigger. Two sets of "flexible leg guardrails" are used for each flexible leg and are installed and fixed symmetrically. Two sets of "rigid leg guardrails" are used for the rigid leg and are installed and fixed symmetrically on opposite sides of the rigid leg.

[0031] See Figure 1 and Figure 2 Optionally, fixed columns 4 are symmetrically arranged on the left and right sides of the front end of the base 1, and the bottom end of the fixed columns 4 is connected to the ear seat 5 through pins 8 and ear pins 9.

[0032] In this embodiment, by adding a fixed column 4 and welding an ear seat 2 6 onto the fixed column 4, the male ear plate 1 7 and the ear seat 2 6 are connected and installed accordingly, and then a pin 8 is inserted at the connection point, and an ear pin 9 is inserted into each pin 8, the stability of the guardrail installed on the support leg side is further enhanced.

[0033] See Figure 1 and Figure 2 Optionally, the ear seat 5, the ear seat 6, and the fixed column 4 are all provided with through holes 12 that are inserted and matched with the pin 8, and the male ear plate 7 is also provided with through holes 12.

[0034] In this embodiment, after the fixed column 4 and the ear seat 5 are plugged in, it is easy to insert the pin 8 into the through hole 12 of the two and pass through it, so as to limit and fix the ear seat 5 and the fixed column 4 after plugging in and installing them; after the male ear plate 7 and the ear seat 6 are plugged in, it is easy to insert the pin 8 into the through hole 12 of the two and pass through it, so as to limit and fix the male ear plate 7 and the ear seat 6 after plugging in and installing them, thereby realizing the use of the guardrail at the legs (rigid legs and flexible legs) of the gantry crane.

[0035] See Figure 8 Optionally, the insertion end of the pin 8 is provided with a locking through hole 801 that cooperates with the ear pin 9.

[0036] In this embodiment, during the assembly of the guardrail, after the pin 8 is inserted through the plug-in connection, the lug 9 is inserted into the locking through hole 801 on the plug end of the pin 8 to lock the pin 8, prevent it from falling off, and make each plug-in connection more secure.

[0037] See Figure 1 and Figure 2 Optionally, a fixing post 10 is welded to the top of both the base 1 and the base 2 302.

[0038] In this embodiment, the first module fence 2 and the second module guardrail 11 are easily installed on the base 1 by fixing post 10; the U-shaped guardrail body 301 is easily installed on the base 2 by fixing post 10.

[0039] It should be noted that, in order to further enhance the stability after installation, through holes 12 are made on the fixing post 10, the plug-in end of the first module fence 2, the plug-in end of the second module guardrail 11, and the plug-in end of the U-shaped guardrail body. After installation, a pin 8 is inserted into the through hole 12 at the plug-in connection, and a lug 9 is inserted into the locking through hole 801 on the plug-in end of the pin 8, thereby locking the pin 8 and preventing it from falling off, making the connection of each plug-in installation joint more secure.

[0040] See Figure 2 and Figure 5 Optionally, a male ear plate 303 is welded to the top of the base 2 302 on the side close to the base 1, and ear seats 304 are fixedly connected to the top left and right sides of the base 1. The male ear plate 2 303 and ear seats 304 are detachably connected by pins 8 and ear pins 9.

[0041] In this embodiment, the male ear plate 2 303 is first inserted into the ear base 304, and then connected to the connection between the two by the pin 8. The ear pin 9 is then inserted into the locking through hole 801 on the pin 8 to lock and fix the connection, thereby further enabling the installation of the base 2 302 on the left and right sides of the base 1.

[0042] See Figure 2 and Figure 5 Optionally, both the male ear plate 2 303 and the ear seat 3 304 are provided with through holes 2 305 that are inserted and matched with the pin 8.

[0043] In this embodiment, after the male ear plate 2 303 and ear seat 3 304 are plugged and installed, a pin 8 is inserted into the through hole 2 305 of the two and passes through, thereby achieving the limiting and fixing of the male ear plate 2 303 and ear seat 3 304 after plugging and installing.

[0044] See Figure 1 and Figure 2 Optionally, both base 1 and base 2 302 are made of square tubes and angle iron welded together; The U-shaped guardrail body 301 is made of round tube welding.

[0045] In this embodiment, the modular guardrail for the installation and dismantling of the gantry crane is made of square steel, angle iron and other profiles for the base 1 and base 2 302, and round tube and other profiles for the U-shaped guardrail body 301, the first module fence 2 and the second module guardrail 11. This structure is stable, the materials are readily available, and it is also convenient to transport after dismantling.

[0046] Although the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A modular guardrail for installing and dismantling a gantry crane, characterized in that, It includes a base (1) and a first module guardrail (2), the first module guardrail (2) being detachably installed at the rear end of the base (1); It also includes a second module guardrail (11), two second module guardrails (11) are detachably installed at the left and right ends of the base one (1), and the two second module guardrails (11) and the first module guardrail (2) form a U-shaped side rail structure; or, it also includes a third module guardrail (3), two third module guardrails (3) are detachably installed at the left and right ends of the base one (1), and the third module guardrail (3) includes a base two (302) and a U-shaped guardrail body (301) set on the base two (302). The base two (302) is horizontally connected to the base one (1), and the length direction of the base two (302) is perpendicular to the length direction of the base one (1). The U-shaped opening directions of the two U-shaped guardrail bodies (301) are set opposite to each other.

2. The modular guardrail for installing and dismantling a gantry crane according to claim 1, characterized in that, The front end of the base 1 (1) is welded with ear seat 1 (5) and ear seat 2 (6).

3. The modular guardrail for installing and dismantling a gantry crane according to claim 2, characterized in that, The base (1) has fixed columns (4) symmetrically arranged on the left and right sides of its front end. The bottom end of the fixed columns (4) is connected to the ear seat (5) through pins (8) and ear pins (9).

4. The modular guardrail for installing and dismantling a gantry crane according to claim 3, characterized in that, The ear seat 1 (5), ear seat 2 (6), and fixed column (4) are all provided with through holes 1 (12) that are inserted and matched with the pin (8).

5. The modular guardrail for installing and dismantling a gantry crane according to claim 3, characterized in that, The pin (8) has a locking through hole (801) that cooperates with the ear pin (9) on the insertion end.

6. The modular guardrail for installing and dismantling a gantry crane according to claim 1, characterized in that, The top of the base one (1) and the top of the base two (302) are both welded with fixing columns (10).

7. The modular guardrail for installing and dismantling a gantry crane according to claim 1, characterized in that, The top of the second base (302) is welded to the side of the first base (1) with a male ear plate (303). The top left and right sides of the first base (1) are fixedly connected with ear seats (304). The male ear plate (303) and ear seats (304) are detachably connected by a pin (8) and an ear pin (9).

8. The modular guardrail for installing and dismantling a gantry crane according to claim 7, characterized in that, Both the male ear plate 2 (303) and the ear seat 3 (304) are provided with through holes 2 (305) that are inserted and matched with the pin (8).

9. The modular guardrail for installing and dismantling a gantry crane according to claim 1, characterized in that, Both the base one (1) and the base two (302) are made of square tubes and angle iron welded together.

10. The modular guardrail for installing and dismantling a gantry crane according to claim 1, characterized in that, The U-shaped guardrail body (301) is made of round tube welding.

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