Lifting appliance capable of lifting guardrail plates with various widths

Abstract

The utility model relates to a lifting appliance capable of lifting guardrail plates with various widths, and belongs to the technical field of lifting appliances, the lifting appliance comprises a main beam and a positioning piece, and the main beam is in sliding fit with a plurality of concentric-square-shaped rods; the upper ends of the concentric-square-shaped rods are arranged on the main beam in a sleeving mode, limiting cross beams are further arranged on the concentric-square-shaped rods, and a guardrail plate is placed between every two concentric-square-shaped rods; the positioning pieces are used for positioning the plurality of guardrail plates on the concentric-square-shaped rods; the positioning piece is connected with a limiting cross beam in the concentric-square-shaped rod; the main beam is a prism, and a row of positioning holes arranged along the long axis of the main beam are formed in the main beam; an elastic plug pin assembly is arranged on each concentric-square-shaped rod, and a locking plug pin of each elastic plug pin assembly is connected with a positioning hole formed in the main beam. The dual-rectangular-shaped rods with replaceable positions are arranged on the main beams, so that guardrail plates with different widths can be conveniently adapted. The main beam is arranged to be a prism so that the concentric-square-shaped rod can be prevented from rotating around the main beam in the circumferential direction, and safety accidents caused by the fact that the guardrail plate falls off from the lifting appliance are reduced.

Description

Technical Field

[0001] This application relates to the technical field of lifting devices, and in particular to a lifting device capable of lifting guardrail panels of various widths. Background Technology

[0002] Guardrails are safety facilities on roads, absorbing collision energy, protecting vehicle passengers, and preventing vehicles from running off the road. As long, strip-shaped workpieces, guardrails require galvanizing during processing to achieve rust and corrosion resistance. After galvanizing, the guardrails are typically neatly arranged on racks and then lifted by a gantry crane to a cooling tank for cooling. Once cooled, they are then lifted back to racks in the workpiece placement area.

[0003] Traditional lifting tools can lift multiple guardrail panels at once, which can improve work efficiency. However, the width of the guardrail panels that the same lifting tool can lift is fixed. When it is necessary to lift guardrail panels of different widths, different lifting tools need to be changed, which is inconvenient. Utility Model Content

[0004] To facilitate the adaptation of lifting devices to guardrail panels of different widths, this application provides a lifting device capable of lifting guardrail panels of various widths. The lifting device for lifting guardrail panels of various widths provided in this application adopts the following technical solution:

[0005] A lifting device capable of hoisting guardrail panels of various widths includes a main beam and a positioning component. Several loop rods are slidably fitted onto the main beam. The upper end of each loop rod is sleeved on the main beam, and a limiting beam is also provided on each loop rod. Guardrail panels are placed between every two loop rods. The positioning component is used to position several guardrail panels on the loop rods. The positioning component is connected to the limiting beam in the loop rod. The main beam is a prism, and a row of positioning holes arranged along the long axis of the main beam is provided on the main beam. Each loop rod is provided with a resilient pin assembly, and the locking pin of the resilient pin assembly is connected to the positioning hole on the main beam.

[0006] By adopting the above technical solution, in order to adapt to guardrails of different widths, the loop bars are all slidably connected to the main beam, and the number of positioning holes in the main beam is greater than the number of loop bars. When it is necessary to move the loop bars, the locking pins installed on the loop bars are disengaged from the positioning holes in the main beam, and then the loop bars are moved to the preset position on the main beam. The locking pins are then connected to the positioning holes in the main beam, thereby adjusting the distance between adjacent loop bars and achieving the effect of adapting to guardrails of different widths.

[0007] Preferably, the resilient pin assembly includes a mounting bracket and a locking pin. The mounting bracket is U-shaped and is mounted on a U-shaped rod. The locking pin is mounted on the mounting bracket, which has a through hole for the locking pin to be inserted into. The locking pin is used to be inserted into a positioning hole on the main beam through the through hole. One end of the locking pin extends out of the mounting bracket from the main beam.

[0008] By adopting the above technical solution, the retaining rod is positioned in the positioning hole of the main beam by locking pin, thereby facilitating the stability of the retaining rod.

[0009] Preferably, the elastic pin assembly further includes a spring, the locking pin is provided with a connecting piece, and the connecting piece is located inside the mounting bracket; the spring is sleeved on the locking pin and located inside the mounting bracket, one end of the spring abuts against the connecting piece of the locking pin, and the other end of the spring abuts against the mounting bracket.

[0010] By adopting the above technical solution, and by setting a spring between the connecting piece of the locking pin and the mounting bracket, the locking pin can be automatically reset.

[0011] Preferably, the locking pin has a pinch head at the end away from the main beam.

[0012] By adopting the above technical solution, and by setting a pinching head on the locking pin, it is easy to disengage the locking pin from the positioning hole of the main beam.

[0013] Preferably, at least two lifting lugs are also fixedly connected to the main beam, and the lifting lugs are used to connect to the gantry crane.

[0014] By adopting the above technical solution, lifting lugs are installed on the main beam to facilitate the lifting of the main beam by the gantry crane.

[0015] Preferably, the positioning element includes a pin, which is connected to a pin hole in the guardrail panel, and the pin is also connected to a limiting beam on the spiral bar.

[0016] By adopting the above technical solution, several guardrail panels are fitted onto pins through their own set pin holes, and the side walls of the pins also abut against the limiting beam. When the boom moves upward, the boom lifts away the pins fitted with the guardrail panels through the limiting beam.

[0017] Preferably, one end of the pin is provided with a handle.

[0018] By adopting the above technical solution, a handle is provided at the end of the pin, which makes it easy to pull the pin out of the pin hole of the guardrail.

[0019] Preferably, the main beam is a prism.

[0020] By adopting the above technical solution, the main beam is set as a prism to prevent the spiral bar from rotating around the main beam, thereby reducing the occurrence of safety accidents caused by the guardrail falling off the lifting device.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. By installing repositionable spiral bars on the main beam, it is easy to adapt to guardrail panels of different widths.

[0023] 2. The main beam is designed as a prism to prevent the spiral bar from rotating around the main beam, thereby reducing the risk of the guardrail falling off the lifting device and causing a safety accident. Attached Figure Description

[0024] Figure 1 This is a schematic diagram illustrating the overall structure in the embodiments of this application.

[0025] Figure 2 This is a schematic diagram illustrating a partial structure in the embodiments of this application.

[0026] Figure 3 This is a schematic diagram illustrating the structure of the spiral rod in the embodiments of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Main beam; 11. Positioning hole; 12. Lifting lug; 2. Retractable rod; 21. Limiting crossbeam; 3. Elastic pin assembly; 31. Mounting bracket; 32. Locking pin; 33. Spring; 34. Connecting piece; 35. Pinch head; 4. Guardrail plate; 5. Positioning component; 51. Handle. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0029] This application discloses a lifting device capable of lifting guardrail panels of various widths, as described in the embodiments below. Figures 1-2 The system includes a main beam 1, loop bars 2, elastic pin assemblies 3, guardrail panels 4, and positioning components 5. In this embodiment, two main beams 1 are provided, arranged parallel to each other. A row of loop bars 2 arranged along the long axis of each main beam 1 is slidably installed on each main beam 1. The loop bars 2 on the two main beams 1 correspond one-to-one. A guardrail panel 4 is stored between two adjacent loop bars 2 on the same main beam 1. The guardrail panel 4 is arranged perpendicular to the length of the main beam 1, and its two ends are located at the two main beams 1 respectively. The positioning component 5 includes pins that pass through several loop bars 2 on the same main beam 1, thereby connecting several guardrail panels 4 in series on the main beam 1. The elastic pin assembly 3 is installed on the upper end of the loop bars 2, positioning the loop bars 2 on the main beam 1.

[0030] Reference Figures 1-2The main beam 1 is a quadrangular prism, and a row of positioning holes 11 arranged along the long axis of the main beam 1 are opened on the top wall of the main beam 1. By setting the main beam 1 as a quadrangular prism, the rotation of the loop rod 2 sleeved on the main beam 1 around the main beam 1 is reduced, thereby reducing the risk of the guardrail 4 falling off the lifting device and causing a safety accident. In order to allow the loop rod 2 to be repositioned on the main beam 1, the number of positioning holes 11 on the main beam 1 is greater than the number of loop rods 2. In this embodiment, there are 55 positioning holes 11. A lifting lug 12 is welded to each end of the long axis of the main beam 1. The lifting lug 12 is connected to the gantry crane by a steel wire rope. 27 identical spiral rods 2 are slidably fitted between the two lifting lugs 12 of the main beam 1. The spiral rods 2 are all vertically installed on the main beam 1, and the upper end of each spiral rod 2 is sleeved on the main beam 1. A limiting beam 21 is set at a lower position of the spiral rod 2. The long axis of the limiting beam 21 is perpendicular to the long axis of the spiral rod 2. A guardrail plate 4 is placed between every two spiral rods 2. Each guardrail plate 4 is provided with a pin hole. In this embodiment, the main beam 1 can lift 25 guardrail plates 4 at a time. The length of the pin is greater than the length of the main beam 1, and the end of the pin is provided with a handle 51 for easy dragging. The pins position the guardrail 4 on the main beam 1 through the pin holes on several guardrail 4. The side wall of the pin also abuts against the limiting beam 21. When the loop rod 2 moves upward, the loop rod 2 lifts the pin through the limiting beam 21, thereby lifting the guardrail 4.

[0031] Reference Figures 1-2 The advantage of vertically setting the loop bar 2 on the main beam 1 is that it is convenient to place the guardrail 4 between the two loop bars 2; the pin hole on the guardrail 4 can be used with the lifting equipment to achieve lifting. Before lifting the guardrail 4 with the lifting equipment, the guardrail 4 is usually placed on the placement frame. The height of the placement frame from the ground is usually relatively low. In order to ensure that the limiting beam 21 on the loop bar 2 can be below the pin hole of the guardrail 4 after the lifting equipment is lowered, the limiting beam 21 is set at a lower position of the loop bar 2.

[0032] Reference Figures 2-3The elastic pin assembly 3 includes a mounting bracket 31, a spring 33, and a locking pin 32. The mounting bracket 31 is U-shaped and is welded to the top wall of the U-shaped rod 2. Both the top and bottom walls of the mounting bracket 31 have through holes, and the two through holes are coaxial. The locking pin 32 is slidably mounted on the mounting bracket 31 in the vertical direction through the through holes. Both ends of the locking pin 32 extend out of the mounting bracket 31, with the lower end of the locking pin 32 extending into the positioning hole 11 of the main beam 1 to fix the U-shaped rod 2 to the main beam 1. A pinch head 35 is welded to the upper end of the locking pin 32. A connecting piece 34 is welded to the locking pin 32 inside the mounting bracket 31. The connecting piece 34 is located close to the main beam 1. A spring 33 is installed between the connecting piece 34 and the inner top surface of the mounting bracket 31. The spring 33 is sleeved on the locking pin 32, with one end of the spring 33 abutting against the connecting piece 34 and the other end of the spring 33 abutting against the inner top wall of the mounting bracket 31.

[0033] Reference Figures 2-3 When it is necessary to adjust the position of the loop rod 2 on the main beam 1, pinch the lifting head 35 and pull it upward to separate the lower end of the locking pin 32 from the positioning hole 11 on the main beam 1. Then move the loop rod 2 to the preset position on the main beam 1, and then release the lifting head 35. The lower end of the locking pin 32 will extend into the positioning hole 11 of the main beam 1 under the action of the spring 33, thereby fixing the loop rod 2.

[0034] The implementation principle of a lifting device capable of lifting guardrail panels of various widths according to an embodiment of this application is as follows: Galvanized guardrail panels 4 are typically placed neatly and horizontally on a placement frame. A gantry crane moves the lifting device above the guardrail panels 4 using steel wire ropes. The gantry crane then lowers the lifting device until workers can touch the elastic pin assembly 3 at the upper end of the loop rod 2, placing the loop rod 2 above the guardrail panels 4. Then, workers readjust the position of the loop rod 2 on the main beam 1 according to the width of the guardrail panels 4. Subsequently, the gantry crane lowers the lifting device again until the limiting beam 21 of the loop rod 2 is lower than the pin hole of the guardrail panel 4. Then, the guardrail panels 4 below the main beam 1 are connected in series by pins. Then, the gantry crane is started. The gantry crane also has an electric hoist. The electric hoist is connected to the lifting lug 12 on the main beam 1 by a steel wire rope. The electric hoist is responsible for winding the steel wire rope to lift or lower the lifting device, and the gantry crane is responsible for moving the lifting device. The guardrail panel 4 is lifted into the cooling pool by the gantry crane. After the guardrail panel 4 is cooled to a certain preset temperature, the guardrail panel 4 is lifted to the placement area of ​​the guardrail panel 4 by the gantry crane. When the guardrail panel 4 is lowered into the placement frame in the placement area, the pin is pulled out from the guardrail panel 4 by the handle 51 on the pin, so that the guardrail panel 4 is removed from the lifting device.

[0035] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lifting device capable of lifting guardrail panels of various widths, characterized in that: It includes a main beam (1) and a positioning component (5), and the main beam (1) has several spiral rods (2) that slide together. The upper end of the spiral rod (2) is sleeved on the main beam (1), and a limiting crossbeam (21) is also provided on the spiral rod (2). A guardrail plate (4) is placed between every two spiral rods (2). The positioning component (5) is used to position several guardrail panels (4) on the spiral bar (2); The positioning component (5) is connected to the limiting beam (21) in the loop rod (2); The main beam (1) is provided with a row of positioning holes (11) arranged along the long axis of the main beam (1); Each of the spiral rods (2) is provided with an elastic pin assembly (3), and the elastic pin assembly (3) is used to connect with the positioning hole (11) opened on the main beam (1).

2. The lifting device for lifting guardrail panels of various widths according to claim 1, characterized in that: The resilient pin assembly (3) includes a mounting bracket (31) and a locking pin (32). The mounting bracket (31) is U-shaped and is mounted on the U-shaped rod (2). The locking pin (32) is mounted on the mounting bracket (31), which has a through hole for the locking pin (32) to be inserted into, and the locking pin (32) is used to be inserted into the positioning hole (11) on the main beam (1) through the through hole; The locking pin (32) extends out of the mounting bracket (31) at the end away from the loop rod.

3. The lifting device for lifting guardrail panels of various widths according to claim 2, characterized in that: The elastic pin assembly (3) further includes a spring (33), and the locking pin (32) is provided with a connecting piece (34), and the connecting piece (34) is located inside the mounting bracket (31); The spring (33) is sleeved on the locking pin (32) and located inside the mounting bracket (31). One end of the spring (33) abuts against the connecting piece (34) of the locking pin (32), and the other end of the spring (33) abuts against the mounting bracket (31).

4. A lifting device for lifting guardrail panels of various widths according to claim 2, characterized in that: The locking pin (32) has a pinch head (35) at the end away from the loop rod.

5. A lifting device for lifting guardrail panels of various widths according to claim 1, characterized in that: The main beam (1) is also provided with at least two lifting lugs (12), which are used to connect with the gantry crane.

6. A lifting device for lifting guardrail panels of various widths according to claim 1, characterized in that: The positioning element (5) includes a pin for inserting into a pin hole in the guardrail (4), and the pin is also connected to a limiting beam (21) on the spiral bar (2).

7. A lifting device for lifting guardrail panels of various widths according to claim 6, characterized in that: One end of the pin is provided with a handle (51).

8. A lifting device for lifting guardrail panels of various widths according to claim 1, characterized in that: The main beam (1) is a prism.

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