Iron plate hoisting tool and method of use thereof

Abstract

This invention provides a steel plate hoisting tool, comprising: two parallel horizontal bars; one end of a lifting beam located at the middle of the horizontal bars, and the other end of the lifting beam located at the middle of another horizontal bar; the lifting beam is located on the horizontal bars and hoisted by a crane; multiple guide columns, one at each end of each horizontal bar; the guide columns are located below the horizontal bars and are perpendicular to the horizontal bars; a sliding platform is slidably connected to the multiple guide columns; the sliding platform includes a connecting part, two support rods, and multiple clamping arms; each support rod is slidably connected to two guide columns on the same side, and the two support rods are connected by the connecting part; each support rod has a clamping arm at each end, and the midpoint between the two clamping arms is located on the same vertical plane as the lifting beam. This invention, by setting the sliding platform on the railcar and positioning the sliding platform, allows the guide columns to automatically fall under their own weight, thereby placing the steel plate hoisted by the lifting beam into the railcar, avoiding direct handling by workers and maintaining the side alignment of the steel plate.

Description

Technical Field

[0001] This invention relates to the technical field of hoisting tools, and more particularly to the technical field of hoisting tools for iron plates. Background Technology

[0002] Currently, the steel mill is shipping over 120 railcars carrying steel plates. Four people are needed to align the sides of each railcar. After the steel plate is lifted into the railcar by a suction cup and lowered to a point 10 cm below the rim, the workers, holding alignment tools, stand at the four side doors of the railcar to ensure the lifted and lowered steel plates are on a vertical line, with a vertical error not exceeding 1 cm. Because the suction cup cannot completely center the steel plate, the lifting beam sways, requiring personnel to repeatedly adjust the plate to achieve alignment. If the plate cannot be perfectly aligned vertically, the sides of the steel plate will not be flush. In this situation, the railcar is unevenly loaded, posing a transportation risk that requires rectification. Furthermore, the suction cup should not lift more than 40 mm of steel plate at a time.

[0003] In addition, it currently takes 50 minutes to work on 10 steel plates in one railcar, which is inefficient; and it also requires staff to perform alignment work on the car, resulting in a waste of human resources. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a steel plate hoisting tool to solve the problems of steel plates not being able to be aligned in the center of the railcar, excessive labor time, and low efficiency due to the need for too many workers in the prior art.

[0005] To achieve the above and other related objectives, the present invention provides a steel plate hoisting tool, comprising:

[0006] Two crossbars, the two crossbars are arranged parallel to each other;

[0007] A lifting beam, one end of which is located at the middle of the crossbar, and the other end of which is located at the middle of another crossbar; and the lifting beam is located on the crossbar and is hoisted onto the crane;

[0008] Multiple guide posts are provided, with one guide post at each end of each crossbar; the guide posts are located below the crossbar and are perpendicular to the crossbar;

[0009] A sliding platform is slidably connected to a plurality of guide columns; the sliding platform includes a connecting part, two support rods and a plurality of clamping arms; each support rod is slidably connected to two guide columns on the same side, and the two support rods are connected to each other through the connecting part; each support rod has a clamping arm at each end, and the midpoint between the two clamping arms is located on the same vertical plane as the lifting beam.

[0010] Preferably, the sliding platform is slidably connected to the guide post via a sliding sleeve.

[0011] Preferably: the sliding sleeve includes a sleeve and a plurality of rollers; the sleeve has a plurality of rollers circumferentially arranged on its sidewall; the sleeve is disposed on a guide post, and the plurality of rollers are in sliding contact with the guide post; the sleeve is disposed on the support rod.

[0012] Preferably, the lower end of the guide post is provided with a limiting flange, and the lower end of the sleeve is provided with a groove that matches the limiting flange.

[0013] Preferably, the clamping arm includes a right-angled triangular support block, a base, a fixed seat, a connecting rod, and a spring; the base is connected to the support rod; one end of the base is provided with a fixed seat, and the other end of the base has a through hole; a right-angled triangular support block is provided under the base, the right-angled triangular support block is rotatably connected to the lower end of the connecting rod, and the upper end of the connecting rod passes through the through hole to its upper end; one end of the spring is connected to the upper end of the connecting rod, and the other end of the spring is connected to the fixed seat.

[0014] Preferably, the lifting beam is provided with a plurality of locking assemblies along its axial direction, each locking assembly including two locking buckles, and the two locking buckles are respectively connected to both sides of the steel plate by a lifting strap.

[0015] A method of using a steel plate hoisting tool as described above, wherein the method of use includes:

[0016] Step 1: Each locking assembly of the lifting beam is connected to both sides of the steel plate via two lifting straps, and the overhead crane lifts the lifting beam.

[0017] Step 2: The crane lowers the lifting beam until the sliding platform rests on the upper frame of the railcar; the two clamping arms clamp the two sides of the upper frame;

[0018] Step 3: The guide column descends in the sleeve, and the lifting beam gradually lowers the suspended steel plate to the bottom plate of the railcar.

[0019] As described above, the iron plate hoisting tool of the present invention has the following beneficial effects:

[0020] This invention utilizes a crane-connected lifting beam to lift and lower steel plates. Furthermore, the invention employs a sliding platform with two clamping arms that engage with both sides of the railcar, positioning the lifting beam at the longitudinal section of the railcar. This ensures the steel plates are aligned within the railcar, maintaining side alignment during each lift. Additionally, by installing a sliding platform on the railcar and positioning it, the guide column automatically lowers under its own weight, placing the steel plates from the lifting beam into the railcar. This eliminates the need for direct handling by workers and ensures proper side alignment of the steel plates. Attached Figure Description

[0021] Figure 1 The image shown is a perspective view of a steel plate hoisting tool according to the present invention;

[0022] Figure 2 Displayed as Figure 1 A magnified view of A;

[0023] Figure 3 The diagram shows a schematic of a steel plate hoisting tool of the present invention installed in a railcar carriage;

[0024] Figure 4 The diagram shows a sliding table and connecting part of a steel plate hoisting tool according to the present invention;

[0025] Figure 5 The diagram shows a steel plate hoisting tool according to the present invention for hoisting a steel plate.

[0026] Component designation explanation

[0027] 01 Steel Plate

[0028] 02 Railcar Car

[0029] 021 Top Frame

[0030] 1. Crossbar

[0031] 2. Hanging beam

[0032] 21 Locking

[0033] 22. Suspenders

[0034] 3 guide pillars

[0035] 4. Sliding platform

[0036] 41 Connecting part

[0037] 411 Sleeve

[0038] 412 Rollers

[0039] 42 Support rod

[0040] 43 Clamping Arm

[0041] 431 Right-angled triangular support block

[0042] 432 Base

[0043] 433 Fixture

[0044] 434 Link

[0045] 435 spring Detailed Implementation

[0046] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0047] Please see Figures 1 to 5 It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0048] like Figure 1 As shown, the present invention provides a steel plate hoisting tool, comprising:

[0049] Two horizontal bars 1 are set up side by side in parallel;

[0050] The lifting beam 2 has one end located at the middle of the crossbar 1 and the other end located at the middle of another crossbar 1; and the lifting beam 2 is located on the crossbar 1 and is hoisted onto the crane.

[0051] Multiple guide posts 3 are provided, with one guide post 3 at each end of each crossbar 1; the guide posts 3 are located below the crossbar 1 and are perpendicular to the crossbar 1;

[0052] The sliding table 4 is slidably connected to multiple guide columns 3. The sliding table 4 includes a connecting part 41, two support rods 42 and multiple clamping arms 43. Each support rod 42 is slidably connected to two guide columns 3 on the same side, and the two support rods 42 are connected to each other through the connecting part 41. Each support rod 42 has a clamping arm 43 at both ends, and the midpoint between the two clamping arms 43 is located on the same vertical plane as the lifting beam 2.

[0053] This invention uses a crane to connect the lifting beam 2, thereby enabling the lifting and lowering of the steel plate hoisting tool. Furthermore, the invention uses the two clamping arms 43 of the sliding platform 4, which are engaged with the sides of the railcar 02, so that the lifting beam 2 is positioned at the longitudinal section of the railcar 02. This ensures that the steel plate 01 being hoisted is aligned with the railcar 02, maintaining the side of the steel plate 01 during each hoisting. Additionally, when the sliding platform 4 is positioned on the upper frame 021 of the railcar 02, the guide column 3 automatically lowers, gradually lowering the steel plate 01 suspended by the lifting beam 2 into the railcar 02, avoiding direct handling by workers and improving production efficiency.

[0054] Since the existing steel plate 01 generally requires manual calibration before being lowered by a crane, this may pose safety hazards during operation and requires more staff to assist in the same process. Therefore, in order to enable the lifting beam 2 to automatically suspend the steel plate 01 and gradually lower it into the railcar 02, a sliding platform 4 is now installed, which is slidably connected to the guide column 3 through a sliding sleeve. After the sliding platform 4 is positioned, the guide column 3 slides downward within the sliding sleeve. At the same time, the guide column 3 drives the lifting beam 2 and the crossbar 1 to descend together, completing the work of hoisting the steel plate 01 into the railcar 02.

[0055] To avoid jamming of the guide post 3 within the sliding sleeve, the sliding sleeve is specifically configured to include a sleeve 411 and multiple rollers 412. Multiple rollers 412 are arranged around the side wall of the sleeve 411 in a circumferential manner. The sleeve 411 is slidably mounted on a guide post 3, and the multiple rollers 412 slide in contact with the outer surface of the guide post 3. The sleeve 411 is mounted on the support rod 42.

[0056] In order to effectively control the falling speed of the guide post 3 in the sliding sleeve, the distance between the roller 412 and the guide post 3 can be controlled, thereby controlling the friction of the roller 412 on the guide post 3.

[0057] To prevent the sliding platform 4 from sliding out from the lower end of the guide post 3, a limiting flange 31 is provided at the lower end of the guide post 3, and a groove matching the limiting flange 31 is provided at the lower end of the sleeve 411. When the sleeve 411 slides down to the lower end of the guide post 3, the upper end face of the limiting flange 31 will block the sleeve 411.

[0058] In order to clamp both sides of the railcar 02; such as Figure 1 and Figure 2As shown, the clamping arm 43 includes a right-angled triangular support block 431, a base 432, a fixed seat 433, a connecting rod 434, and a spring 435. The base 432 is connected to the support rod 42. One end of the base 432 is provided with a fixed seat 433, and the end face of the other end of the base 432 has a through hole. The right-angled triangular support block 431 is provided under the base 432. The right-angled triangular support block 431 is rotatably connected to the lower end of the connecting rod 434, and the upper end of the connecting rod 434 passes through the through hole to the top of it. One end of the spring 435 is connected to the upper end of the connecting rod 434, and the other end of the spring 435 is connected to the fixed seat 433.

[0059] To enable the lifting beam 2 to hoist the steel plate 01 and ensure that the lifting beam 2 is positioned on the longitudinal section of the steel plate 01, multiple locking assemblies are installed on the lifting beam 2 along its axial direction. Each locking assembly includes two locking buckles 21, which are connected to both sides of the steel plate 01 via lifting straps 22. Furthermore, the lengths of the lifting straps 22 must be consistent, and the two locking buckles 21 must be symmetrical along the longitudinal section of the lifting beam 2, so that the lifting beam 2 can be positioned on the longitudinal section of the steel plate 01 during hoisting.

[0060] In addition to the above embodiments, the iron plate hoisting tool of the present invention also has the following method of use:

[0061] Step 1: Each locking assembly of the lifting beam 2 is connected to both sides of the steel plate 01 via two lifting straps 22, and then the lifting beam is lifted by a crane; thus, the crane lifts the steel plate 01 through the lifting beam 2, and the lifting beam 2 is positioned on the longitudinal section of the steel plate;

[0062] Step 2: The crane lowers the lifting beam 2 until the sliding platform 4 rests on the upper frame 021 of the railcar 02. At this time, the two clamping arms 43 will clamp the two sides of the upper frame 021, so that the lifting beam 2 is located on the longitudinal section of the railcar 02. Therefore, when the lifting beam 2 is lowered, the center line of the steel plate 01 will be located on the longitudinal section of the railcar 02. Furthermore, since the above steps are performed every time the lifting is carried out, the two sides of all the steel plates 01 will be flush, avoiding the need for manual adjustment of the sides of the steel plates 01.

[0063] Step 3: The guide column 3 descends in the sleeve 411, and the lifting beam 2 gradually lowers the suspended steel plate 01 onto the bottom plate of the railcar 02. After the sliding table 4 is positioned, the guide column 3 will descend in the sleeve 411 due to its own weight. The guide column 3 will drive the lifting beam 2 above it to descend together, so that the lifting beam 2 will lower the suspended steel plate 01 onto the railcar 02.

[0064] In summary, this invention positions the lifting beam 2 and steel plate 01 using a hoisting method, so that the lifting beam 2 is located on the longitudinal section of the steel plate 01. Simultaneously, this invention positions the railcar carriage 02 using the sliding platform 4, so that the lifting beam 2 is located on the longitudinal section of the railcar carriage 02. This allows the centerline of the steel plate 01 to be directly set on the longitudinal section of the railcar carriage 02 via the lifting beam 2. Furthermore, this invention ensures that the sides of overlapping multiple layers of steel plates 01 remain flush after multiple hoisting operations. In addition, since this invention only requires aligning the sliding platform 4 and the railcar carriage 02 to define the position of the subsequent steel plates 01, it reduces the number of workers required for aligning the steel plates 01, greatly improving work efficiency and reducing production costs.

[0065] Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0066] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A tool for lifting iron plates, characterized in that, include: Two crossbars, the two crossbars are arranged parallel to each other; A lifting beam, one end of which is located at the middle of the crossbar, and the other end of which is located at the middle of another crossbar; and the lifting beam is located on the crossbar and is hoisted onto the crane; Multiple guide posts are provided, with one guide post at each end of each crossbar; the guide posts are located below the crossbar and are perpendicular to the crossbar; A sliding platform is slidably connected to a plurality of guide columns; the sliding platform includes a connecting part, two support rods and a plurality of clamping arms; each support rod is slidably connected to two guide columns on the same side, and the two support rods are connected to each other through the connecting part; each support rod has a clamping arm at each end, and the midpoint between the two clamping arms is located on the same vertical plane as the lifting beam.

2. The iron plate hoisting tool according to claim 1, characterized in that: The sliding platform is slidably connected to the guide post via a sliding sleeve.

3. The iron plate hoisting tool according to claim 2, characterized in that: The sliding sleeve includes a sleeve and a plurality of rollers; the sleeve has a plurality of rollers circumferentially arranged on its sidewall; the sleeve is disposed on a guide post, and the plurality of rollers are in sliding contact with the guide post; the sleeve is disposed on the support rod.

4. The iron plate hoisting tool according to claim 3, characterized in that: The lower end of the guide post is provided with a limiting flange, and the lower end of the sleeve is provided with a groove that matches the limiting flange.

5. The iron plate hoisting tool according to claim 1, characterized in that: The clamping arm includes a right-angled triangular support block, a base, a fixed seat, a connecting rod, and a spring; the base is connected to the support rod; one end of the base is provided with a fixed seat, and the other end of the base has a through hole; a right-angled triangular support block is provided under the base, and the right-angled triangular support block is rotatably connected to the lower end of the connecting rod, and the upper end of the connecting rod passes through the through hole to its upper end; one end of the spring is connected to the upper end of the connecting rod, and the other end of the spring is connected to the fixed seat.

6. The iron plate hoisting tool according to claim 3, characterized in that: The lifting beam is provided with a plurality of locking assemblies along its axial direction. Each locking assembly includes two locking buckles, and the two locking buckles are respectively connected to both sides of the steel plate by a lifting strap.

7. A method of using the iron plate hoisting tool as described in claim 6, characterized in that, The method of use includes: Step 1: Each locking assembly of the lifting beam is connected to both sides of the steel plate via two lifting straps, and the overhead crane lifts the lifting beam. Step 2: The crane lowers the lifting beam until the sliding platform rests on the upper frame of the railcar; the two clamping arms clamp the two sides of the upper frame; Step 3: The guide column descends in the sleeve, and the lifting beam gradually lowers the suspended steel plate to the bottom plate of the railcar.

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