U-shaped steel bar handling device

Abstract

The present invention discloses a U-shaped steel bar handling device, wherein the Y-direction moving component is slidably connected to the X-direction moving component, the X-direction moving component is slidably connected to the Z-direction moving component, a Z-direction bracket component is fixedly mounted on the Z-direction moving component, and the lower end of the Z-direction bracket component is fixedly connected to a clamping mechanism. The present invention can allow the clamping mechanism to move in three dimensions, namely, the X-direction, the Y-direction, and the Z-direction, according to work needs, so that the clamping mechanism is moved to a suitable position, and the clamping mechanism works to grab or put down the U-shaped steel bar to achieve the taking and placing of the U-shaped steel bar. Multiple sets of clamping mechanisms can automatically transport and take and place the U-shaped steel bar, can adapt to the clamping of U-shaped steel bars of multiple specifications, realize automated handling, save labor, and can also significantly reduce the labor intensity of workers, reduce the labor cost of the enterprise, improve production efficiency, maintain safety in the production process, and reduce production hazards.

Description

Technical Field

[0001] The invention relates to the technical field of building steel bar welding equipment, in particular to a U-shaped steel bar transporting device. Background Art

[0002] The steel cage, as the skeleton of a building, consists of stirrups and U-shaped steel bars. It plays a major load-bearing role and is used in large quantities during the construction process. Concrete has high compressive strength but very low tensile strength. It plays a role in restraining the pile concrete, allowing it to withstand a certain amount of axial tension.

[0003] Currently, rebar cages are primarily fabricated using wire tying or welding processes. Specifically, workers assemble and nest U-shaped rebar and stirrups, moving them into position, and then use welding equipment or wire tying to connect the stirrups to the longitudinal bars. In most existing construction projects, rebar cages are manually wound and tied or bent and then welded. With the rapid development of intelligent construction, the existing rebar cage manufacturing process can no longer meet the demand for more efficient cage processing. To achieve automated cage production, existing technology has evolved to use U-shaped rebar, replacing the original double rebar.

[0004] Manually fabricated steel cages are unevenly spaced, loose, and easily deformed, affecting project quality. They also require a significant amount of manpower and are costly to produce. Furthermore, the varying specifications of the steel cages required on construction sites make manual handling time-consuming and labor-intensive, resulting in low efficiency and potential safety hazards. Therefore, further improvements to existing technologies are needed. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a U-shaped steel bar handling device, comprising: a Y-direction moving component, an X-direction moving component, a Z-direction moving component, a Z-direction bracket assembly and a clamping mechanism, wherein the Y-direction moving component is slidingly connected to the X-direction moving component, the X-direction moving component is slidingly connected to the Z-direction moving component, a Z-direction bracket assembly is fixedly mounted on the Z-direction moving component, and the lower end of the Z-direction bracket assembly is fixedly connected to the clamping mechanism.

[0006] Preferably, the Z-direction moving component includes a Z-direction mounting seat, a screw mounting cover, a servo motor, a screw and a lifting nut, the X-direction moving component is fixedly connected to the Z-direction mounting seat, the screw mounting cover is fixedly mounted on the Z-direction mounting seat, the servo motor is fixedly mounted on the upper end of the screw mounting cover, the output end of the servo motor extends into the screw mounting cover and is connected to the screw transmission, and the lower end of the screw is adaptively connected to the lifting nut.

[0007] Preferably, the Z-direction bracket assembly includes a main frame, a Z-direction slide rail assembly, a crossbeam and a suspension beam. Z-direction slide rail assemblies are respectively installed on both sides of the main frame. The Z-direction slide rail assembly is slidably connected to the Z-direction mounting seat. A crossbeam is welded in the middle of the main frame. The crossbeam is fixedly connected to the lifting nut. A suspension beam is welded at the bottom of the main frame.

[0008] Preferably, the clamping mechanism includes a clamping base plate, a tensioning assembly, a main clamping jaw, a rigid contact assembly and a flexible contact assembly. The cantilever beam is fixedly connected to the clamping base plate, the tensioning assembly is fixedly installed on the clamping base plate, the main clamping jaw is fixedly installed on the tensioning assembly, the rigid contact assembly is fixedly installed on the inner side of the lower end of the main clamping jaw, a flexible contact assembly is provided above the rigid contact assembly, the flexible contact assembly includes a flexible guide shaft, a spring, a first rubber plate and a first pad, a mounting hole is provided on the main clamping jaw, a flexible guide shaft is passed through and fixedly connected to the mounting hole, the other end of the flexible guide shaft is abutted against the first pad, a plurality of springs are fixedly installed between the flexible guide shaft and the first pad, and a first rubber plate is attached to the other side of the first pad.

[0009] Preferably, the rigid contact assembly includes a second rubber plate and a rigid clamping block, one side of the second rubber plate is fixed to the inner side of the lower end of the main clamping jaw, and the other side of the second rubber plate is fixedly connected to the rigid clamping block.

[0010] Preferably, the tensioning assembly includes a cylinder, a linear guide, a rotating mechanism and a fixed shaft, and the cylinder and the linear guide are respectively fixedly mounted on the clamping jaw base plate, and the linear guides are relatively arranged, and a main clamping jaw is installed on the linear guide, and one side of the main clamping jaw is fixedly connected to the output end of the cylinder through a connecting piece, and a rotating mechanism is clamped between the relatively arranged main clamping jaws, and the rotating mechanism includes a rotating block, a sliding hole and a cam follower, and sliding holes are relatively opened on the rotating block, and a cam follower is slidably connected in the sliding hole, and one end of the cam follower is fixedly connected to the main clamping jaw, and a fixed shaft is movably passed through the middle of the rotating block, and one end of the fixed shaft extends out of the clamping jaw base plate and is fixedly connected to the clamping jaw base plate.

[0011] Preferably, the X-direction moving assembly includes an X-direction base plate, an X-direction guide rail, an X-direction slider assembly and an X-direction motor. The Y-direction moving assembly is fixedly connected to the X-direction base plate. The X-direction guide rail is installed on the X-direction base plate. The X-direction slider assembly is adapted to be slidably installed on the X-direction guide rail. The X-direction slider assembly is fixedly connected to the Z-direction mounting seat. The Z-direction mounting seat is also provided with an X-direction motor. The X-direction motor drives the X-direction slider assembly to slide.

[0012] Preferably, the Y-direction moving component includes a Y-direction guide rail, a Y-direction slider assembly and a support plate. The relatively arranged Y-direction guide rails are adapted to be slidably mounted with a Y-direction slider assembly. A support plate is fixed on the Y-direction slider assembly, and the upper end of the support plate is fixedly connected to the bottom of the X-direction base plate.

[0013] Preferably, baffles are detachably mounted on the outer side of the Z-direction mounting seat and the outer side of the crossbeam.

[0014] Preferably, an accordion protective cover is further included, and both ends of the accordion protective cover are respectively arranged between the baffle and the X-direction bottom plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The present invention can move the clamping mechanism in three dimensions, namely, X, Y and Z, according to work needs, so that the clamping mechanism is moved to a suitable position, and then the clamping mechanism is moved to the top of the U-shaped steel bar. The servo motor controls the lifting nut through the screw drive to drive the Z-axis bracket assembly to lift or lower it to the corresponding position. Then the clamping mechanism works to grab or put down the U-shaped steel bar to achieve the taking and placing of the U-shaped steel bar. Multiple sets of clamping mechanisms can automatically transport and take and place the U-shaped steel bar, and can adapt to the clamping of U-shaped steel bars of multiple specifications, realize automatic handling, save labor, and greatly reduce the labor intensity of workers, reduce the labor cost of enterprises, improve production efficiency, maintain safety in the production process, and reduce production hazards.

[0017] (2) The present invention uses the rigid clamping block of the clamping mechanism and the first rubber plate to cooperate with each other. When the tensioning mechanism is opened or tightened, the U-shaped steel bar can be clamped more stably and is not easy to fall off. The spring and flexible guide shaft provided on the flexible contact component can achieve better positioning and buffering between the first rubber plate and the first pad, thereby protecting the clamped U-shaped steel bar. The lower part of the inner side of the rigid clamping block is provided with an inclined surface, which is inclined downward and inward, and is suitable for clamping U-shaped steel bars of various specifications. The inclined surface can also better stabilize the clamped U-shaped steel bar and increase the friction force, and has a good clamping effect on both ordinary steel bars and threaded steel bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the overall structure of the present invention with an organ protective cover installed;

[0020] Figure 3 It is a structural schematic diagram of the X-direction moving assembly, the Z-direction moving assembly, the Z-direction bracket assembly and the clamping mechanism of the present invention;

[0021] Figure 4It is a structural schematic diagram of the Z-direction moving assembly, the Z-direction bracket assembly and the clamping mechanism of the present invention;

[0022] Figure 5 For the present invention Figure 4 Rear view;

[0023] Figure 6 It is a structural schematic diagram of the Z-direction moving assembly of the present invention;

[0024] Figure 7 Schematic diagram of the structure of the clamping mechanism of the present invention

[0025] Figure 8 It is a rear view of the clamping mechanism of the present invention;

[0026] Figure 9 is a cross-sectional view of the clamping mechanism of the present invention;

[0027] Figure 10 It is a structural schematic diagram of the clamping mechanism of the present invention cut along the linear guide rail;

[0028] Figure 11 It is a cross-sectional view of the rigid contact assembly of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1 to 11 As shown, a U-shaped steel bar handling device includes a Y-direction guide rail 101, a Y-direction slider assembly 102, a support plate 103, an X-direction base plate 201, an X-direction guide rail 202, an X-direction slider assembly 203, an X-direction motor 204, a Z-direction mounting seat 3011, a Z-direction slide rail assembly 3022, a screw mounting cover 303301, a servo motor 304, a screw 305, a lifting nut 306, a main frame 401, a crossbeam 402, a suspension beam 403, and a clamping claw base 50150. 1. Tensioning assembly 502, main clamping jaw 503, flexible guide shaft 504, spring 505, first rubber plate 506, first pad 507, second rubber plate 508, rigid clamping block 509, inclined surface 510, cylinder 602, linear guide rail 603, rotating mechanism 604, rotating block 605, sliding hole 606, cam follower 607, fixed shaft 608, connecting piece 609, mounting slot 610, U-shaped steel bar 7, baffle 8 and accordion protective cover 9.

[0031] In the description of the present invention, unless otherwise specified, "plurality" means two or more; terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0033] like Figures 1 to 11 As shown, the Y-direction moving assembly is slidably connected to the X-direction moving assembly, the X-direction moving assembly is slidably connected to the Z-direction moving assembly, a Z-direction bracket assembly is fixedly mounted on the Z-direction moving assembly, and the lower end of the Z-direction bracket assembly is fixedly connected to the clamping mechanism.

[0034] The X-direction moving assembly includes an X-direction base plate 201, an X-direction guide rail 202, an X-direction slider assembly 203 and an X-direction motor 204. The Y-direction moving assembly is fixedly connected to the X-direction base plate 201. The X-direction guide rail 202 is installed on the X-direction base plate 201. The X-direction slider assembly 203 is adapted to be slidably installed on the X-direction guide rail 202. The X-direction slider assembly 203 is fixedly connected to the Z-direction mounting seat 301. The Z-direction mounting seat 301 is also provided with an X-direction motor 204. The X-direction motor 204 drives the X-direction slider assembly 203 to slide, and the X-direction slider assembly 203 drives the Z-direction mounting seat 301 to slide on the X-direction guide rail 202.

[0035] The Y-direction moving assembly includes a Y-direction guide rail 101, a Y-direction slider assembly 102 and a support plate 103. The Y-direction slider assemblies 102 are adapted to be slidably installed on the relatively arranged Y-direction guide rails 101. The support plate 103 is fixed on the Y-direction slider assembly 102. The upper end of the support plate 103 is fixedly connected to the bottom of the X-direction base plate 201, driving the X-direction base plate to slide on the Y-direction guide rail 101.

[0036] The Z-direction moving assembly includes a Z-direction mounting seat 301, a screw mounting cover 303, a servo motor 304, a screw 305 and a lifting nut 306. The X-direction moving assembly is fixedly connected to the Z-direction mounting seat 301. The screw mounting cover 303 is fixedly mounted on the Z-direction mounting seat 301. The servo motor 304 is fixedly mounted on the upper end of the screw mounting cover 303. The output end of the servo motor 304 extends into the screw mounting cover 303 and is transmission-connected to the screw 305. The lower end of the screw 305 is adaptively connected to the lifting nut 306.

[0037] The Z-direction bracket assembly includes a main frame 401, a Z-direction slide rail assembly 302, a crossbeam 402 and a suspension beam 403. The Z-direction slide rail assemblies 302 are respectively installed on both sides of the main frame 401. The Z-direction slide rail assembly 302 is slidably connected to the Z-direction mounting seat 301 (the Z-direction slide rail assembly 302 is a common linear guide rail structure on the market, which is not an innovation of the present invention, so the present invention does not describe the Z-direction slide rail assembly 302 in detail). A crossbeam 402 is welded to the middle of the main frame 401, and the crossbeam 402 is fixedly connected to the lifting nut 306. The suspension beam 403 is welded to the bottom of the main frame 401.

[0038] The lifting nut 304 on the Z-direction moving assembly clamps the crossbeam 402, and the Z-direction support assembly is lifted or lowered by the servo motor 302, and both sides of the main frame 401 and the Z-direction mounting seat 301 slide up and down within the range of motion of the Z-direction slide rail assembly 302.

[0039] The clamping mechanism includes a clamping jaw base plate 501, a tensioning assembly 502, a main clamping jaw 503, a rigid contact assembly and a flexible contact assembly. The suspension beam 403 is fixedly connected to the clamping jaw base plate 501, and the tensioning assembly 502 is fixedly installed on the clamping jaw base plate 501. The main clamping jaw 503 is fixedly installed with a relatively arranged main clamping jaw 503. The rigid contact assembly is fixedly installed on the inner side of the lower end of the main clamping jaw 503. A flexible contact assembly is provided above the rigid contact assembly. The flexible contact assembly includes a flexible guide shaft 504, a spring 505, a first excellent rubber plate 506 and a first pad 507. A mounting hole is provided on the main clamping jaw 503, and a flexible guide shaft 504 is passed through and fixedly connected to the mounting hole. The other end of the flexible guide shaft 504 is abutted against the first pad 507. A plurality of springs 505 are fixedly installed between the first pad 507, and a first high-strength rubber plate 506 is attached to the other side of the first pad 507. The rigid contact component includes a second high-strength rubber plate 508 and a rigid clamping block 509. One side of the second high-strength rubber plate 508 is fixedly arranged on the inner side of the lower end of the main clamping jaw 503, and the other side of the second high-strength rubber plate 508 is fixedly connected to the rigid clamping block 509. During operation, the clamping mechanism can be grasped by at least one group. In order to achieve a better clamping effect, the present invention sets three groups of clamping mechanisms to clamp the U-shaped steel bar 7. Specifically, the three groups of clamping mechanisms in the present invention are unevenly arranged. The two groups of clamping mechanisms are respectively fixedly mounted on the left and right ends of the suspension beam 403, and the middle group of clamping mechanisms is arranged on the clamping mechanism closer to the right end (for the appended claims of the present invention). Figure 4 The straight-line distance from the middle set of clamping mechanisms to the left end clamping mechanism is greater than the straight-line distance from the middle set of clamping mechanisms to the right end clamping mechanism. This setting is because the bottom of the U-shaped steel bar is the connecting part, and the weight of the bottom is greater than the weight of the opening. The middle set of clamping mechanisms closer to the right end can easily balance the overall weight of the U-shaped steel bar and achieve a more stable clamping effect.

[0040] Through the combination of rigidity and flexibility of the rigid clamping block 509 and the first rubber plate 506, and their mutual cooperation, when the tensioning mechanism 502 performs the opening or tightening action, the U-shaped steel bar 7 can be clamped more stably (it has a good clamping effect on both ordinary steel bars and threaded steel bars, especially threaded steel bars. Since the cross-section of threaded steel bars is elliptical and has a non-standard circular structure, the clamping sizes of the rigid contact component and the flexible contact component may be slightly different during the grasping process. The flexible contact component is set at the upper end for a better clamping effect). The spring 505 and the flexible guide shaft 504 set on the flexible contact component achieve better positioning and buffering between the first rubber plate 506 and the first pad 507, thereby protecting the clamped U-shaped steel bar 7.

[0041] The straight-line distance between the oppositely arranged first rubber plates 506 is smaller than the straight-line distance between the oppositely arranged rigid clamps 509, which ensures that the U-shaped steel bar 7 is stably clamped at the flexible contact component when clamping the U-shaped steel bar 7; the height of the rigid clamp 509 is 20-50 mm, and the lower part of the inner side of the rigid clamp 509 is provided with an inclined surface 510, which is inclined downward and inward to adapt to clamping U-shaped steel bars 7 of various specifications. The inclined surface 510 can also better stabilize the clamped U-shaped steel bar 7 and increase friction. The height of the first rubber plate 506 is 220-250 mm, and the distance between the top of the rigid clamp 509 and the first rubber plate 506 is 60 mm. Figure 1-Figure 3 As shown, U-shaped steel bars 7 of various specifications and widths can be clamped at one time.

[0042] The working principle of the clamping mechanism is as follows: the tensioning mechanism 502 moves outward to perform the opening action, driving the main clamping jaw 503 to open. At this time, the U-shaped steel bar 7 is transported to the middle of the main clamping jaw 503, and the tensioning mechanism 502 begins to tighten inward, driving the main clamping jaw 503 to close inward. At this time, the two sides of the U-shaped steel bar 7 are respectively attached to the first excellent rubber plate 506 and the rigid clamping jaw 509, and the tensioning mechanism 502 is then tightened. The first excellent rubber plate 506 and the rigid clamping jaw 509 clamp the U-shaped steel bar 7 with both rigidity and flexibility. The lower part of the inner side of the rigid clamping block 509 is provided with an inclined surface 510, which is inclined downward and inward to adapt to clamping U-shaped steel bars 7 of various specifications. The inclined surface 510 can also better stabilize the clamped U-shaped steel bar 7 to increase friction, and keep the U-shaped steel bar 7 clamped and not easy to fall off.

[0043] The tensioning assembly 502 includes a cylinder 602, a linear guide 603, a rotating mechanism 604 and a fixed shaft 608. The cylinder 602 and the linear guide 603 are fixedly installed on the clamping jaw base plate 501 respectively. The linear guide 603 are arranged relative to each other. The linear guide 603 and the main clamping jaw 503 are arranged symmetrically to ensure that the center will not be offset when clamping the U-shaped steel bar, thereby achieving a better clamping effect. A main clamping jaw 503 is installed on the linear guide rail 603, and one side of the main clamping jaw 503 is fixedly connected to the output end of the cylinder 602 through a connecting piece 609. A rotating mechanism 604 is clamped between the relatively arranged main clamping jaws 503. The rotating mechanism 604 includes a rotating block 605, a sliding hole 606 and a cam follower 607. Sliding holes 606 are relatively opened on the rotating block 605, and a cam follower 607 is slidably connected in the sliding hole 606. One end of the cam follower 607 is fixedly connected to the main clamping jaw 503, and a fixed shaft 608 is movably penetrated in the middle of the rotating block 605. One end of the fixed shaft 608 extends out of the clamping jaw base plate 501 and is fixedly connected to the clamping jaw base plate 501.

[0044] The working principle of the tensioning assembly 502 is as follows: under the operation of the cylinder 602, the main clamping jaw 503 is pushed to perform reciprocating motion through the connecting piece 609, and the rotating block 605 is synchronously driven to rotate around the fixed axis 608. A cam follower 607 is installed in the sliding hole 606 provided on the rotating block 605 to ensure the synchronous movement of the main clamping jaw 503 and the rotating block 605, so as to achieve the purpose of clamping or putting down the U-shaped steel bar 7.

[0045] Baffles 8 are detachably installed on the outside of the Z-direction mounting seat 301 and the outside of the crossbeam 402. The two ends of the accordion protective cover 9 are respectively placed between the baffle 8 and the X-direction base plate 201, covering the X-direction moving component and protecting the X-direction base plate 201 and the X-direction guide rail 202. The accordion protective cover 9 is compressible, and the movement of the Z-direction moving component on the X-direction guide rail 201 will not be affected.

[0046] The working principle of the present invention is as follows: according to work needs, the clamping mechanism can be moved in three dimensions, namely, X, Y and Z, so that the clamping mechanism is moved to a suitable position, and then the clamping mechanism is moved to directly above the U-shaped steel bar 7. The servo motor 302 is driven by the lead screw 303 to control the lifting nut 304 to drive the Z-direction bracket assembly as a whole to lift or lower it to the corresponding position, and then the clamping mechanism works to grab or put down the U-shaped steel bar 7 to realize the taking and placing of the U-shaped steel bar 7. Multiple sets of clamping mechanisms can automatically transport and take and place the U-shaped steel bar 7, can adapt to the clamping of U-shaped steel bars 7 of multiple specifications, realize automated handling, save labor, and can also greatly reduce the labor intensity of workers, reduce the labor cost of the enterprise, improve production efficiency, maintain safety in the production process, and reduce production hazards.

[0047] The present invention has a simple structure, low manufacturing cost, and wide economic adaptability. It can not only achieve excellent clamping and lifting effects on steel bars with circular cross sections, but also on square or elliptical threaded steel bars with rounded cross sections.

[0048] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of rights of the present invention. Therefore, modifications, equivalent changes, improvements, etc. made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A U-shaped steel bar handling device, characterized in that: include: A Y-direction moving component, an X-direction moving component, a Z-direction moving component, a Z-direction bracket component and a clamping mechanism, wherein the Y-direction moving component is slidably connected to the X-direction moving component, the X-direction moving component is slidably connected to the Z-direction moving component, a Z-direction bracket component is fixedly mounted on the Z-direction moving component, and the lower end of the Z-direction bracket component is fixedly connected to the clamping mechanism; the clamping mechanism comprises a clamping jaw base plate (501), a tensioning component (502), a main clamping jaw (503), a rigid contact component and a flexible contact component, a tensioning component (502) is fixedly mounted on the clamping jaw base plate (501), a main clamping jaw (503) arranged relatively is fixedly mounted on the tensioning component (502), a rigid contact component is fixedly mounted on the inner side of the lower end of the main clamping jaw (503), a flexible contact component is provided above the rigid contact component, and the flexible contact component comprises a flexible guide shaft (504), a spring (505), a first rubber plate (506) and A first pad (507), a mounting hole is provided on the main clamp (503), a flexible guide shaft (504) is passed through and fixedly connected in the mounting hole, the other end of the flexible guide shaft (504) is abutted on the first pad (507), a plurality of springs (505) are fixedly installed between the flexible guide shaft (504) and the first pad (507), and a first high-strength rubber plate (506) is attached to the other side of the first pad (507); the rigid contact component includes a second high-strength rubber plate (508) and a rigid clamp (509), one side of the second high-strength rubber plate (508) is fixedly provided on the inner side of the lower end of the main clamp (503), and the other side of the second high-strength rubber plate (508) is fixedly connected to the rigid clamp (509), and the lower part of the inner side of the rigid clamp (509) is provided with an inclined surface (510), and the inclined surface (510) is inclined downward and inward to adapt to clamping U-shaped steel bars (7) of various specifications;The tensioning assembly (502) includes a cylinder (602), a linear guide rail (603), a rotating mechanism (604) and a fixed shaft (608). The cylinder (602) and the linear guide rail (603) are fixedly mounted on the jaw base plate (501), respectively. The linear guide rails (603) are arranged opposite to each other. A main jaw (503) is mounted on the linear guide rail (603). One side of the main jaw (503) is fixedly connected to the output end of the cylinder (602) through a connecting piece (609). A rotating mechanism (604) is clamped between the oppositely arranged main jaws (503). 604), the rotating mechanism (604) includes a rotating block (605), a sliding hole (606) and a cam follower (607), the rotating block (605) is provided with a sliding hole (606) opposite to the rotating block (605), the cam follower (607) is slidably connected in the sliding hole (606), one end of the cam follower (607) is fixedly connected to the main clamping jaw (503), a fixed shaft (608) is movably passed through the middle of the rotating block (605), one end of the fixed shaft (608) extends out of the clamping jaw bottom plate (501) and is fixedly connected to the clamping jaw bottom plate (501).; 2. A U-shaped steel bar handling device according to claim 1, characterized in that: The Z-direction moving assembly comprises a Z-direction mounting seat (301), a screw mounting cover (303), a servo motor (304), a screw (305) and a lifting nut (306); the X-direction moving assembly is fixedly connected to the Z-direction mounting seat (301); a screw mounting cover (303) is fixedly mounted on the Z-direction mounting seat (301); a servo motor (304) is fixedly mounted on the upper end of the screw mounting cover (303); an output end of the servo motor (304) extends into the screw mounting cover (303) and is transmission-connected to the screw (305); and a lower end of the screw (305) is adaptively connected to the lifting nut (306).

3. A U-shaped steel bar handling device according to claim 2, characterized in that: The Z-direction support assembly comprises a main frame (401), a Z-direction slide rail assembly (302), a crossbeam (402) and a suspension beam (403), wherein the Z-direction slide rail assembly (302) is respectively installed on both sides of the main frame (401), the Z-direction slide rail assembly (302) is slidably connected to the Z-direction mounting seat (301), a crossbeam (402) is welded to the middle of the main frame (401), the crossbeam (402) is fixedly connected to the lifting nut (306), and a suspension beam (403) is welded to the bottom of the main frame (401).

4. A U-shaped steel bar handling device according to claim 3, characterized in that: The X-direction moving assembly comprises an X-direction base plate (201), an X-direction guide rail (202), an X-direction slider assembly (203) and an X-direction motor (204); the Y-direction moving assembly is fixedly connected to the X-direction base plate (201); the X-direction guide rail (202) is mounted on the X-direction base plate (201); the X-direction slider assembly (203) is adapted to be slidably mounted on the X-direction guide rail (202); the X-direction slider assembly (203) is fixedly connected to the Z-direction mounting seat (301); the Z-direction mounting seat (301) is further provided with an X-direction motor (204); the X-direction motor (204) drives the X-direction slider assembly (203) to slide.

5. The U-shaped steel bar handling device according to claim 4, characterized in that: The Y-direction moving assembly comprises a Y-direction guide rail (101), a Y-direction slider assembly (102) and a support plate (103); the Y-direction slider assembly (102) is adapted to be slidably mounted on the relatively arranged Y-direction guide rail (101); the support plate (103) is fixed on the Y-direction slider assembly (102); and the upper end of the support plate (103) is fixedly connected to the bottom of the X-direction base plate (201).

6. The U-shaped steel bar handling device according to claim 5, characterized in that: Baffles (8) are detachably mounted on the outer sides of the Z-direction mounting seat (301) and the crossbeam (402).

7. The U-shaped steel bar handling device according to claim 6, characterized in that: It also includes an accordion protective cover (9), with both ends of the accordion protective cover (9) respectively positioned between the baffle (8) and the X-direction bottom plate (201).

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