U-shaped steel reinforcing bar lifting device

Abstract

The present application relates to the technical field of hanging machinery, and particularly relates to a lifting appliance for U-shaped steel bars. The lifting appliance comprises a row storage rack and a lifting mechanism. The row storage rack is used for storing a plurality of U-shaped steel bars. The plurality of U-shaped steel bars are arranged at equal intervals on the row storage rack, so as to facilitate simultaneous carrying of the plurality of U-shaped steel bars. The lifting mechanism is arranged on both sides of the row storage rack. The lifting mechanism comprises a lifting appliance support, a driving structure and a plurality of clamping structures. The plurality of clamping structures are arranged one by one in correspondence with the plurality of U-shaped steel bars. The driving structure and the clamping structures are arranged at both ends of the lifting appliance support. The driving structure can drive the clamping structures to clamp both sides of the U-shaped steel bars. When the U-shaped steel bars are carried, the clamping structures clamp both ends of the U-shaped steel bars. In this way, the U-shaped steel bars are prevented from falling due to position movement during carrying, so as to achieve the purpose of simultaneous carrying of the plurality of U-shaped steel bars.

Description

Technical Field

[0001] This invention relates to the field of hoisting machinery technology, and in particular to a hoisting tool for U-shaped steel bars. Background Technology

[0002] Currently, the construction of buildings requires the cooperation of multiple building materials, among which U-shaped steel bars are used extensively. The purpose of U-shaped steel bars is to assist in the molding of cement in construction. The molding of cement cannot be separated from the fixing of U-shaped steel bars. However, the current method of transporting U-shaped steel bars is mostly to have workers use iron chains or steel wire ropes to tie several U-shaped steel bars stacked together at two ends, and then rely on gantry cranes to lift them to the steel bar skeleton binding jig. Then, the binding iron chains or steel wire ropes are untied manually, and the steel bars are sorted out one by one. Finally, the workers carry them one by one to the designated location.

[0003] The problem with existing technology is that the steel bars are in a messy state after forming and cannot be arranged neatly and orderly. When placing them in the beam, they still need to be picked out manually, which is labor-intensive and inefficient. At the same time, workers also need to carry them to the designated position one by one, resulting in high transportation costs and low transportation efficiency.

[0004] Therefore, there is an urgent need for a lifting tool for U-shaped steel bars to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a lifting tool for U-shaped steel bars, which can transport multiple U-shaped steel bars to a designated location and improve transportation efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Lifting tools for U-shaped steel bars include:

[0008] A storage rack is used to store multiple U-shaped steel bars, with the multiple U-shaped steel bars arranged at equal intervals on the storage rack;

[0009] A lifting mechanism is provided on both sides of the material storage rack. The lifting mechanism includes a lifting device bracket, a driving structure, and multiple clamping structures. The driving structure and the clamping structures are both provided at both ends of the lifting device bracket. The driving structure can drive the clamping structures to clamp the two sides of the U-shaped steel bar.

[0010] As a preferred technical solution for the above-mentioned lifting device for U-shaped steel bars, the clamping structure includes a linkage unit and multiple clamping arms. The linkage unit is rotatably connected to the multiple clamping arms and is connected to the driving structure. The linkage unit can push the multiple clamping arms to move simultaneously toward the U-shaped steel bar.

[0011] As a preferred technical solution for the above-mentioned lifting device for U-shaped steel bars, the clamping arm includes a clamping arm body and an elastic recovery member. One end of the elastic recovery member is fixedly connected to the clamping arm body, and the other end of the elastic recovery member is fixedly connected to the lifting device bracket. The clamping arm body is rotatably connected to the lifting device bracket.

[0012] As a preferred technical solution for the above-mentioned lifting tool for U-shaped steel bars, the lifting tool bracket is provided with a steel bar positioning seat, and the clamping arm is rotatably connected to the steel bar positioning seat.

[0013] As a preferred technical solution for the lifting device for the U-shaped steel bar, a clamping plate is provided at the end of the clamping arm that contacts the U-shaped steel bar.

[0014] As a preferred technical solution for the above-mentioned U-shaped rebar lifting device, the linkage unit includes two linkage plates and multiple extrusion plates. The driving structure is fixedly installed at both ends of the lifting device bracket along the length of the first direction. The end of each linkage plate near the lifting device bracket is connected to the output end of the driving structure, and the extension direction of the linkage plate is in the same direction as the width direction of the lifting device bracket. One end of the extrusion plate is rotatably connected to the linkage plate, and the other end of the extrusion plate is rotatably connected to the lifting device bracket. The other end of the extrusion plate is a fan-shaped structure, and the distance from the connection point of the extrusion plate and the lifting device bracket to the arc-shaped side of the fan-shaped structure tends to increase.

[0015] As a preferred technical solution for the above-mentioned lifting device for U-shaped steel bars, the linkage unit further includes a hinge shaft. One end of the hinge shaft is fixedly connected to the extrusion plate, and the extension direction of the hinge shaft is perpendicular to the extension direction of the extrusion plate. The other end of the hinge shaft is fixedly provided with a steel bar receiving plate, which is perpendicular to the hinge shaft. After the U-shaped steel bar is clamped, the steel bar receiving plate is perpendicular to the bent end of the steel bar.

[0016] As a preferred technical solution for the above-mentioned lifting device for U-shaped steel bars, a clamping adjustment wheel is provided at one end of the clamping arm that contacts the extrusion plate, and the clamping adjustment wheel is rotatably located at one end of the clamping arm.

[0017] As a preferred technical solution for the above-mentioned lifting device for U-shaped steel bars, a radial joint bearing is provided between the clamping adjustment wheel and the clamping arm.

[0018] As a preferred technical solution for the above-mentioned lifting device for U-shaped steel bars, the clamping arm further includes a positioning rubber plate, and the positioning rubber plate and the main body of the clamping arm are respectively disposed on both sides of the clamping plate.

[0019] Beneficial effects of this invention:

[0020] The lifting device for U-shaped steel bars includes a storage rack and a lifting mechanism. The storage rack stores multiple U-shaped steel bars at equal intervals to facilitate simultaneous handling. The lifting mechanism is located on both sides of the storage rack and includes a lifting device support, a drive structure, and multiple clamping structures. Each clamping structure corresponds to one U-shaped steel bar. The drive structure and clamping structures are located at both ends of the lifting device support. The drive structure drives the clamping structures to clamp the two ends of the U-shaped steel bars. During handling, the clamping structures hold the two ends of the U-shaped steel bars in place, preventing them from shifting and falling during transport, thus achieving the goal of moving multiple U-shaped steel bars simultaneously. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0022] Figure 1 This is a front view of the lifting tool for U-shaped steel bars provided in an embodiment of the present invention;

[0023] Figure 2 for Figure 1 A magnified view of a section at point I;

[0024] Figure 3 This is a schematic diagram showing the state of the clamping arm of the U-shaped rebar lifting device after it has been pushed, according to an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram showing the connection state of the driving structure and the clamping structure provided in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram showing the positions of the extrusion plate and the clamping adjustment wheel provided in an embodiment of the present invention;

[0027] Figure 6 for Figure 1 Sectional view at point AA;

[0028] Figure 7 for Figure 6 Enlarged view of section II in the middle;

[0029] Figure 8 for Figure 1 Sectional view at point BB;

[0030] Figure 9 This is a side view of the lifting tool for U-shaped steel bars provided in an embodiment of the present invention;

[0031] Figure 10 for Figure 9 A magnified view of a section at point III.

[0032] In the picture:

[0033] 100. U-shaped steel bars;

[0034] 1. Material storage rack; 2. Lifting device bracket; 3. Drive structure; 4. Clamping structure; 41. Linkage unit; 411. Linkage plate; 412. Extrusion plate; 413. Hinge shaft; 414. Rebar receiving plate; 42. Clamping arm; 421. Clamping arm body; 422. Elastic recovery component; 423. Clamping plate; 424. Positioning rubber plate; 425. Adjusting screw; 5. Rebar positioning seat; 6. Clamping adjusting wheel; 7. Radial spherical bearing; 8. Lifting ring. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0036] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0039] In existing technologies, the handling of U-shaped steel bars usually involves workers using chains or wire ropes to tie several U-shaped steel bars stacked together at two points, then using a gantry crane to lift them into a steel bar cage binding jig. Next, workers manually untie the chains or wire ropes and sort out the steel bars one by one. Finally, workers move them one by one to a designated location.

[0040] The problem with existing technology is that the U-shaped steel bars are in a messy state after forming and cannot be arranged neatly and orderly. When placing the U-shaped steel bars in the beam, they still need to be picked by hand, which is labor-intensive and inefficient. At the same time, workers also need to carry the U-shaped steel bars to the designated position one by one, resulting in high handling costs and low handling efficiency.

[0041] To address this, the present invention provides a lifting device for U-shaped reinforcing bars, which can be simultaneously moved to a designated location.

[0042] like Figure 1 and Figure 2 As shown, the lifting device for U-shaped steel bars includes a storage rack 1 and a lifting mechanism. The storage rack 1 is used to store multiple U-shaped steel bars 100, which are evenly spaced on the storage rack 1 to facilitate simultaneous handling. The lifting mechanism is located on both sides of the storage rack 1 and includes a lifting device bracket 2, a drive structure 3, and multiple clamping structures 4. Each clamping structure 4 corresponds to one of the multiple U-shaped steel bars 100. The drive structure 3 and the clamping structures 4 are located at both ends of the lifting device bracket 2. The drive structure 3 can drive the clamping structures 4 to clamp the two ends of the U-shaped steel bars 100. When handling the U-shaped steel bars 100, the clamping structures 4 clamp the two ends of the U-shaped steel bars 100 to prevent them from falling due to positional movement during handling.

[0043] In some embodiments, reference Figures 2 to 5 The clamping structure 4 includes a linkage unit 41 and multiple clamping arms 42. The linkage unit 41 is rotatably connected to the multiple clamping arms 42 and is connected to the drive structure 3. The linkage unit 41 can push the multiple clamping arms 42 to move simultaneously toward the U-shaped steel bar 100. This achieves the purpose of multiple clamping arms 42 clamping multiple U-shaped steel bars 100 at the same time.

[0044] Furthermore, in this embodiment, the clamping arm 42 includes a clamping arm body 421 and an elastic restoring member 422. One end of the elastic restoring member 422 is fixedly connected to the clamping arm body 421, and the other end is fixedly connected to the lifting bracket 2. The clamping arm body 421 is rotatably connected to the lifting bracket 2. Under the support of the lifting bracket 2, the clamping arm body 421 can rotate around the lifting bracket 2 under the push of the linkage unit 41. The lifting bracket 2 provides support and limitation for the clamping arm body 421. Both ends of the elastic restoring member 422 are fixedly connected to the clamping arm body 421 and the lifting bracket 2, respectively. Thus, when the thrust of the linkage unit 41 on the clamping arm body 421 disappears, the elastic restoring member 422 will achieve the purpose of resetting the clamping arm body 421 under the action of its own restoring force.

[0045] The clamping arm body 421 has a mounting hole on its side wall facing the elastic recovery member 422. An adjusting screw 425 is provided in the mounting hole. The adjusting screw 425 can adjust the length of the elastic recovery member 422 extending into the mounting hole, thereby achieving the purpose of clamping the U-shaped steel bar 100 and restoring the clamping arm body 421 to its initial position.

[0046] Specifically, in this embodiment, reference continues to be made to... Figure 2 and Figure 3 The lifting bracket 2 is equipped with a rebar positioning seat 5, and the clamping arm 42 is rotatably connected to the rebar positioning seat 5. Specifically, the clamping arm body 421 is rotatably connected to the rebar positioning seat 5. The purpose of the rebar positioning seat 5 is to enable the clamping arm body 421 to rotate during the pushing process. This allows the upper and lower ends of the clamping arm body 421 to move in opposite directions, thereby achieving the purpose of clamping the U-shaped rebar 100.

[0047] The clamping arm body 421 can be a C-shaped structure. A specific shape of the clamping arm body 421 is provided here. As long as it can clamp the U-shaped steel bar 100, it is within the protection range.

[0048] The clamping arm 42 also includes a clamping plate 423 that contacts the U-shaped steel bar 100. Specifically, the clamping plate 423 is provided at the end of the clamping arm body 421 that contacts the U-shaped steel bar 100. The clamping plate 423 directly contacts the clamping arm 42, thereby achieving the purpose of clamping the U-shaped steel bar 100.

[0049] To prevent the U-shaped steel bar 100 from being scratched due to friction between the clamping plate 423 and the U-shaped steel bar 100, the clamping arm 42 also includes a positioning rubber plate 424, and the positioning rubber plate 424 and the clamping arm body 421 are respectively disposed on both sides of the clamping plate 423.

[0050] Specifically, in this embodiment, such as Figures 2 to 8As shown, the linkage unit 41 includes two linkage plates 411 and multiple pressing plates 412. The linkage plates 411 are fixedly connected to the drive structure 3, which is fixedly installed at both ends of the first direction length of the lifting bracket 2. Thus, the two drive structures 3 support the linkage plates 411 and allow them to move relative to the lifting bracket 2. One end of the pressing plate 412 is rotatably connected to the linkage plate 411, and the other end is rotatably connected to the lifting bracket 2. The other end of the pressing plate 412 has a fan-shaped structure, and the distance from the connection point between the pressing plate 412 and the lifting bracket 2 to the arc-shaped side of the fan-shaped structure tends to increase. This allows the pressing plate 412 to push the clamping arm body 421 during rotation, enabling the clamping arm body 421 to rotate relative to the lifting bracket 2, moving away from or closer to the oppositely positioned clamping arm body 421. In this embodiment, the drive structure 3 is preferably a cylinder. Due to the characteristics of the cylinder, the linkage plate 411 will not move relative to the position during the clamping of the U-shaped steel bar 100, thus ensuring the clamping force of the clamping arm on the U-shaped steel bar 100 and preventing the U-shaped steel bar 100 from falling off.

[0051] Optionally, in this embodiment, the linkage unit 41 further includes a hinge shaft 413. One end of the hinge shaft 413 is fixedly connected to the extrusion plate 412, and the extension direction of the hinge shaft 413 is perpendicular to the extension direction of the extrusion plate 412. The other end of the hinge shaft 413 is fixedly provided with a rebar receiving plate 414, which is perpendicular to the hinge shaft 413 and perpendicular to the bent end of the rebar. The rebar receiving plate 414 is fixedly connected to the hinge shaft 413, so that the rebar receiving plate 414 can rotate together with the hinge shaft 413. During the clamping process of the U-shaped rebar 100, the rebar receiving plate 414 and the clamping arm 42 body move simultaneously. The clamping arm body 421 cooperates to clamp both ends of the U-shaped rebar 100, while the rebar receiving plate 414 extends to the bottom of the U-shaped rebar 100 to support it. When the U-shaped steel bar 100 is released, the cylinder rod of the cylinder retracts. At this time, the linkage plate 411 also moves with the retraction of the cylinder rod, and the clamping arm body 421 loses the pressure of the pressing plate 412 and resets under the action of the elastic recovery member 422.

[0052] Furthermore, in this embodiment, as Figure 9 and Figure 10 As shown, a clamping adjusting wheel 6 is provided at the end of the clamping arm 42 that contacts the pressing plate 412. The clamping adjusting wheel 6 is rotatably mounted at one end of the clamping arm 42, facilitating the pushing of the clamping arm body 421. Furthermore, a radial joint bearing 7 is provided between the clamping adjusting wheel 6 and the clamping arm 42. This facilitates the movement of the clamping arm body 421.

[0053] like Figure 9 As shown, the top of the lifting bracket 2 is equipped with a lifting ring 8, which facilitates the lifting of the lifting bracket 2 by overhead cranes, jacks or cranes.

[0054] The lifting process for this U-shaped steel bar is as follows:

[0055] After the U-shaped steel bars 100 are evenly spaced on the storage rack 1, the drive structure 3 drives the linkage plate 411 to move linearly. Multiple extrusion plates 412 connected to the linkage plate 411 rotate around the hinge shaft 413, simultaneously pushing the clamping arms 42 to rotate. After the clamping arms 42 rotate, both ends of the U-shaped steel bars 100 are equipped with clamping arms 42. Then, the drive structure 3 returns to its original state. Under the action of the elastic recovery member 422, the clamping arms 42 return to their initial state. At this time, the hinge shaft 413 also returns to its initial state. Thus, the rotation of the clamping arms 42 clamps the U-shaped steel bars 100, and the steel bar receiving plate 414 is located directly below the bent end of the U-shaped steel bar 100. The system supports the U-shaped steel bars 100, thus limiting their position under the combined action of the clamping arm 42 and the steel bar receiving plate 414. The crane hook passes through the lifting ring 8 and lifts the U-shaped steel bars 100 as a whole, enabling the simultaneous transport of multiple U-shaped steel bars 100. After being transported to the destination, the drive structure 3 drives the linkage plate 411 to move linearly. Simultaneously, the multiple pressing plates 412 connected to the linkage plate 411 rotate around the hinge axis 413, pushing the clamping arm 42 to rotate. The rotation of the clamping arm 42 releases both ends of the U-shaped steel bars 100, and the steel bar receiving plate 414 no longer limits their position. When the U-shaped steel bars 100 need to be evenly spaced on the storage rack 1, they remain sequentially arranged after being transported to the designated location. Construction personnel only need to take them as needed, without sorting.

[0056] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A lifting tool for U-shaped reinforcing bars, characterized in that, include: A storage rack (1) is used to store multiple U-shaped steel bars (100), and the multiple U-shaped steel bars (100) are equally spaced on the storage rack (1); The lifting mechanism is set on both sides of the material storage rack (1). The lifting mechanism includes a lifting bracket (2), a driving structure (3) and multiple clamping structures (4). The driving structure (3) and the clamping structures (4) are both set at both ends of the lifting bracket (2). The driving structure (3) can drive the clamping structure (4) to clamp the two sides of the U-shaped steel bar (100). The clamping structure (4) includes a linkage unit (41) and multiple clamping arms (42). The linkage unit (41) is rotatably connected to the multiple clamping arms (42). The linkage unit (41) is connected to the driving structure (3). The linkage unit (41) can push the multiple clamping arms (42) to move simultaneously toward the U-shaped steel bar (100). The linkage unit (41) includes two linkage plates (411) and multiple extrusion plates (412). The drive structure (3) is fixedly installed at both ends of the lifting bracket (2) along the first direction. The end of each linkage plate (411) near the lifting bracket (2) is connected to the output end of the drive structure (3). The extension direction of the linkage plate (411) is in the same direction as the width direction of the lifting bracket (2). One end of the extrusion plate (412) is rotatably connected to the linkage plate (411), and the other end of the extrusion plate (412) is rotatably connected to the lifting bracket (2). The other end of the extrusion plate (412) is a fan-shaped structure. The distance from the connection point of the extrusion plate (412) and the lifting bracket (2) to the arc-shaped side of the fan-shaped structure tends to increase. The linkage unit (41) further includes a hinge shaft (413), one end of which is fixedly connected to the extrusion plate (412), the extension direction of which is perpendicular to the extension direction of which is perpendicular to the extrusion plate (412), and a steel bar receiving plate (414) is fixedly provided at the other end of which is perpendicular to the hinge shaft (413). After the U-shaped steel bar (100) is clamped, the steel bar receiving plate (414) is perpendicular to the bent end of the steel bar. The clamping arm (42) includes a clamping arm body (421) and an elastic recovery member (422). One end of the elastic recovery member (422) is fixedly connected to the clamping arm body (421), and the other end of the elastic recovery member (422) is fixedly connected to the lifting bracket (2). The clamping arm body (421) is rotatably connected to the lifting bracket (2).

2. The lifting tool for U-shaped steel bars according to claim 1, characterized in that, The lifting bracket (2) is provided with a rebar positioning seat (5), and the clamping arm (42) is rotatably connected to the rebar positioning seat (5).

3. The lifting tool for U-shaped steel bars according to claim 1, characterized in that, The clamping arm (42) is provided with a clamping plate (423) at the end that contacts the U-shaped steel bar (100).

4. The lifting tool for U-shaped steel bars according to claim 1, characterized in that, The clamping arm (42) is provided with a clamping adjustment wheel (6) at one end that contacts the extrusion plate (412), and the clamping adjustment wheel (6) is rotatably disposed at one end of the clamping arm (42).

5. The lifting tool for U-shaped steel bars according to claim 4, characterized in that, A radial joint bearing (7) is provided between the clamping adjustment wheel (6) and the clamping arm (42).

6. The lifting tool for U-shaped steel bars according to claim 3, characterized in that, The clamping arm (42) also includes a positioning rubber plate (424), and the positioning rubber plate (424) and the main body of the clamping arm (42) are respectively disposed on both sides of the clamping plate (423).

Images