Grab dredger I-shaped steel rising and falling transportation frame

Abstract

The invention provides a grab dredger I-shaped steel lifting transportation frame which comprises a frame body and transportation wheels arranged at the bottom of the frame body, and further comprises a chain block arranged at the top of the frame body and used for lifting operation. The side supports comprise vertical rods fixedly arranged on the side walls of the frame body and transverse rods symmetrically arranged on the two side walls of the vertical rods along the side faces where the vertical rods are located, and the balance weight mechanisms are fixedly arranged on the side walls of the transverse rods and comprise balance weight frames and balance weight blocks capable of vertically moving along the balance weight frames. When the I-shaped steel is unloaded, the transportation frame is pushed to the bottom of the I-shaped beam, the I-shaped steel is hoisted through the chain block, and when the I-shaped steel is hoisted through the hoisting end, the balancing weight is driven to move downwards along the balance weight frame, so that the center of the whole transportation frame is lowered; and meanwhile, the side supports can be driven to extend outwards from the inner sides of the transverse rods, so that the supporting area of the side supports is increased, and the operation stability during I-shaped steel lifting is improved.

Description

Technical Field

[0001] The invention relates to the technical field of grab ship equipment, and in particular to an I-beam lifting and lowering transport frame of a grab ship. Background Art

[0002] For an ultra-large non-self-propelled grab ship, every dispatch requires sealing and reinforcement. Because the turntable crane weighs 2,985 tons, the load on the crane turntable is very large, so the reinforcement of the crane turntable is the top priority of the work. Before each dispatch, it is necessary to weld and connect 8 400×400×20mm I-beams with lengths ranging from 8 to 14m at a specific position of the turntable and the deck surface. After arriving at the destination, the cabin is cut open with wind welding. The previous method was to hang a hand winch on the top of the I-beam and support the lower end with a 3T hand-cranked hydraulic car. However, due to the heavy weight of the I-beam, every time the I-beam was lowered, the hand-cranked hydraulic car slipped due to excessive force, the direction was difficult to control, and even the body of the car was deformed. This not only caused the hydraulic car to malfunction, but also posed certain safety hazards. Summary of the invention

[0003] The invention provides an I-beam lifting and lowering transport frame for a grab ship, which can improve the operation stability when lifting the I-beam.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A grab ship I-beam lifting and lowering transport frame comprises a frame body and transport wheels arranged at the bottom of the frame body, and also comprises:

[0006] A hand chain hoist, which is arranged on the top of the frame and is used for lifting operations;

[0007] A side bracket, the side bracket comprising a vertical rod fixed to the side wall of the frame body and a horizontal rod symmetrically arranged on both side walls of the vertical rod along the side where the vertical rod is located;

[0008] A counterweight mechanism, the counterweight mechanism is fixed to the side wall of the crossbar, and the counterweight mechanism includes a counterweight frame and a counterweight block capable of vertically moving along the counterweight frame;

[0009] A transmission mechanism, which is arranged between the lifting end of the hand chain hoist and the counterweight block, and is used to achieve synchronous displacement of the counterweight block and the lifting end; and

[0010] The side support is movably arranged at the end of the cross bar, and the side support can be driven by the downward movement of the counterweight block to extend outward from the inside of the cross bar to achieve auxiliary support.

[0011] Preferably, the frame includes a rectangular parallelepiped frame and reinforcing columns fixedly arranged on each side of the rectangular parallelepiped frame.

[0012] Preferably, the counterweight mechanism also includes guide rails arranged on two opposite side walls inside the counterweight frame, and guide blocks cooperating with the guide rails are provided at both ends of the counterweight block; a driving mechanism is fixedly provided on the side wall of the counterweight frame, and the driving mechanism includes a driving motor, a screw arranged at the output end of the driving motor, and a screw nut which moves spirally along the axial direction of the screw, and the end of the screw nut away from the screw is fixedly connected to the end of the counterweight block.

[0013] Preferably, the transmission mechanism includes a first transmission wheel arranged at the top of the counterweight frame, a second transmission wheel arranged on the side wall of the vertical rod, a conversion assembly arranged at the bottom end of the vertical rod, a main transmission rope connected to the lifting end at one end and passing through the first transmission wheel and the second transmission wheel in sequence and extending outward at the other end, a third transmission wheel arranged at the top of the counterweight frame, and a branch transmission rope connected to the main transmission rope at one end and passing through the conversion assembly at the other end and extending through the third transmission wheel to the counterweight block.

[0014] Preferably, the conversion assembly includes two conversion wheel groups cross-arranged on the side wall of the vertical rod, each conversion wheel group includes two relatively arranged fourth transmission wheels for the transmission rope to pass through, and a mounting plate arranged on the outside of the two fourth transmission wheels and fixedly connected to the side wall of the vertical rod.

[0015] Preferably, a cavity is provided inside the cross bar, and a driven block is slidably connected to the side wall of the cross bar close to the counterweight block, and a driving inclined surface matching the driven block is provided at the bottom of the counterweight block. A sleeve is fixed on the side wall of the inner cavity of the cross bar, and a return spring is provided between the side wall of the sleeve away from the driven block and the inner wall of the inner cavity of the cross bar.

[0016] Preferably, the side wall of the cross bar is provided with a through hole communicating with the inner cavity thereof, and the driven block is slidably disposed in the through hole.

[0017] Preferably, the side support includes a support column slidably arranged in the inner cavity of the cross bar, a hydraulic support rod vertically fixed at one end of the support column away from the cross bar, and a side support wheel arranged at the bottom of the hydraulic support rod; a driving gear is also provided at the end of the lead screw, and a driven rack extending outward to mesh with the driving gear is also provided on the side wall of the support column; a sliding rod capable of sliding along the sleeve is fixed on the side wall of the support column placed in the inner cavity of the cross bar.

[0018] Preferably, a side wall of one side of the cross bar is provided with a sliding groove, and the driven rack is slidably arranged in the sliding groove.

[0019] Preferably, an engagement groove is formed on the side wall on the other side of the cross bar, and an engagement strip capable of cooperating with the engagement groove is fixedly formed on the side wall of the support column away from the driven rack.

[0020] It can be seen from the above technical scheme that the present invention has the following beneficial effects: in the present invention, when it is necessary to unload the I-beam, the transport frame is pushed to the central position of the bottom of the I-beam, and the transport wheel is braked, and the I-beam is lifted by pulling the hand winch. Specifically, in the process of lifting the I-beam, one end of the transmission mechanism can be connected to the lifting end of the hand winch, and the other end is connected to the counterweight mechanism. In this way, when the I-beam is lifted by the lifting end, the counterweight block will be driven to move downward along the counterweight frame to lower the center of the entire transport frame. At the same time, when the counterweight block moves downward, the side support can be driven to extend outward from the inside of the cross bar to increase the support area of ​​the side support. In this way, the side support and the frame body jointly support the transport frame to improve the operation stability when lifting the I-beam. After the lifting is completed, the transport wheel releases the brake and the I-beam can be transported to any direction, thereby realizing the lifting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0022] Figure 2 This is a structural schematic diagram in which the hand chain hoist and one side of the counterweight mechanism are removed;

[0023] Figure 3 for Figure 2 A partial enlarged view of part A;

[0024] Figure 4 It is a structural schematic diagram of the connection between the counterweight mechanism and the vertical rod;

[0025] Figure 5 is a schematic diagram of the structure of the counterweight;

[0026] Figure 6 It is a schematic diagram of the structure of the connection between the crossbar and the internal support column thereon;

[0027] Figure 7 is a structural schematic diagram of the crossbar;

[0028] Figure 8 It is a structural schematic diagram of the connection between the driven block and the support column;

[0029] Fig. 9 for Figure 8 Schematic diagram of the structure from another side perspective.

[0030] In the figure: 10, frame; 110, reinforcement column; 20, transport wheel; 30, hand chain hoist; 310, lifting end; 410, vertical rod; 420, horizontal rod; 421, sliding groove; 422, meshing groove; 430, driven block; 440, sleeve; 450, return spring; 510, counterweight frame; 520, counterweight block; 521, driving inclined plane; 530, guide rail; 540, guide block; 550, driving motor; 560, Lead screw; 570, lead screw nut; 610, first transmission wheel; 620, second transmission wheel; 630, main transmission rope; 640, third transmission wheel; 650, sub-transmission rope; 661, fourth transmission wheel; 662, mounting plate; 70, side support; 710, support column; 720, hydraulic support rod; 730, side support wheel; 740, driving gear; 750, driven rack; 760, sliding rod; 770, meshing strip. DETAILED DESCRIPTION

[0031] A preferred embodiment of the present invention is described in detail below with reference to the accompanying drawings.

[0032] To achieve the above purpose, the embodiment of the present invention adopts the following technical solution: Figure 1 , Figure 2A grab ship I-beam lifting and landing transport frame, comprising a frame body 10 and a transport wheel 20 arranged at the bottom of the frame body 10, and also comprising a hand chain hoist 30, a side bracket, a counterweight mechanism, a transmission mechanism and a side support 70. Further, the hand chain hoist is arranged at the top of the frame body for lifting operations, and the side bracket comprises a vertical rod 410 fixedly mounted on the side wall of the frame body 10 and a cross bar 420 symmetrically arranged on the two side walls of the vertical rod along the side where the vertical rod 410 is located, the counterweight mechanism is fixedly mounted on the side wall of the cross bar 420, and the counterweight mechanism comprises a counterweight frame 510 and a counterweight block 520 capable of vertically moving along the counterweight frame, the transmission mechanism is arranged between the lifting end 310 of the hand chain hoist 30 and the counterweight block 520, for realizing synchronous displacement of the counterweight block 520 and the lifting end 310, the side support is movably arranged at the end of the cross bar 420, and the side support can be supported by the counterweight block 5 20 The downward drive extends outward from the inner side of the cross bar 420 to achieve auxiliary support. When the I-beam needs to be unloaded, the transport frame is pushed to the central position of the bottom of the I-beam, and the transport wheel is braked. The I-beam is lifted by pulling the hand winch. Specifically, in the process of lifting the I-beam, one end of the transmission mechanism can be connected to the lifting end of the hand winch, and the other end is connected to the counterweight mechanism. In this way, when the I-beam is lifted by the lifting end, the counterweight block will be driven to move downward along the counterweight frame to lower the center of the entire transport frame. At the same time, when the counterweight block moves downward, the side support can be driven to extend outward from the inner side of the cross bar to increase the supporting area of ​​the side support. In this way, the side support and the frame body jointly support the transport frame to improve the operation stability when lifting the I-beam. After the lifting is completed, the transport wheel releases the brake and the I-beam can be transported to any direction to achieve the lifting operation.

[0033] As a preferred technical solution of this embodiment, the frame 10 includes a rectangular frame and reinforcing columns 110 fixedly arranged on each side of the rectangular frame. When in use, the transport wheels are movably arranged at the bottom of the rectangular frame to drive the rectangular frame to move freely. The reinforcing columns can be arranged on each side of the rectangular frame to improve the stability of each surface of the rectangular frame.

[0034] Reference Figure 4 As a preferred technical solution of this embodiment, the counterweight mechanism further includes guide rails 530 arranged on two opposite side walls inside the counterweight frame 510, and correspondingly, guide blocks 540 cooperating with the guide rails are arranged at both ends of the counterweight block 520, so that when the guide blocks move along the guide rails, the counterweight block can be vertically moved along the counterweight frame;

[0035] It should be noted that the counterweight block in this embodiment can not only move along the counterweight frame under the action of its own gravity, but also be driven to move by an external driving force. Therefore, a driving mechanism is fixedly provided on the side wall of the counterweight frame 510. Furthermore, the driving mechanism includes a driving motor 550, a lead screw 560 arranged at the output end of the driving motor, and a lead screw nut 570 that moves spirally along the axial direction of the lead screw. The end of the lead screw nut away from the lead screw is fixedly connected to the end of the counterweight block 520. When in use, the lead screw is driven to rotate by the driving motor, and the lead screw then drives the lead screw nut to move along the axial direction of the lead screw. Since the lead screw nut is connected to the counterweight block, the lead screw nut can be driven to move vertically in the counterweight frame.

[0036] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 As a preferred technical solution of this embodiment, the transmission mechanism includes a first transmission wheel 610, a second transmission wheel 620, a conversion assembly, a main transmission rope 630, a third transmission wheel 640 and a sub-transmission rope 650. The first transmission wheel 610 is rotatably set on the top of the counterweight frame 510, the second transmission wheel 620 is rotatably set on the side wall of the vertical rod 410, the conversion assembly is set at the bottom end of the vertical rod, one end of the main transmission rope 630 is connected to the lifting end, and the other end of the main transmission rope passes through the first transmission wheel 610 and the second transmission wheel 620 in sequence and extends outward, and the third transmission wheel 640 is rotatably set on the side wall of the counterweight frame 510. At the top, one end of the sub-transmission rope 650 is connected to the main transmission rope, and the other end of the sub-transmission rope passes through the conversion assembly and extends through the third transmission wheel 640 to be connected to the counterweight block 520. When the transmission mechanism is set between the lifting end and the counterweight mechanism, that is, when the counterweight block needs to be moved synchronously by the action of the lifting end, as the lifting end moves upward, under the action of the counterweight block's own gravity, the sub-transmission rope will be pulled along the conversion assembly and the third transmission wheel. The sub-transmission rope will then pull the main transmission rope to drive the main transmission rope along the first transmission wheel and the second transmission wheel, thereby realizing the transmission between the lifting end and the counterweight block.

[0037] It should be noted that, in this embodiment, the cross-sectional diameter of the branch transmission rope is half of the cross-sectional diameter of the main transmission rope.

[0038] Reference Figure 3Furthermore, the conversion assembly includes two conversion wheel groups arranged in a cross shape on the side wall of the vertical rod 410. Specifically, each conversion wheel group includes two fourth transfer wheels 661 arranged opposite to each other for the sub-transmission rope 650 to pass through, and a mounting plate 662 arranged on the outside of the two fourth transmission wheels and fixedly connected to the side wall of the vertical rod 410. It should be noted that the fourth transmission wheel type is rotatably arranged on the mounting plate. When in use, the sub-transmission rope first contacts with one of the conversion wheel groups, and at this time the sub-transmission rope is vertically distributed along the vertical rod. As the sub-transmission rope contacts with the other conversion wheel group, since the two conversion wheel groups form a "cross" cross section, the sub-transmission rope will be converted by the other conversion wheel group to extend in the direction of the counterweight mechanism on both sides, thereby achieving the purpose of converting the transmission direction so as to contact the counterweight blocks on both sides.

[0039] Reference Figure 4 , Figure 5 , Figure 6 As a preferred technical solution of this embodiment, a cavity is provided inside the cross bar 420, and a driven block 430 is slidably connected to the side wall of the cross bar 420 close to the counterweight block 520. A driving inclined surface 521 matching the driven block is provided at the bottom of the counterweight block 520. A sleeve 440 is fixed to the side wall of the driven block 430 placed in the inner cavity of the cross bar, and a return spring 450 is provided between the side wall of the sleeve 440 away from the side of the driven block 430 and the inner wall of the inner cavity of the cross bar. When in use, when the counterweight block moves down along the counterweight frame, the driving inclined surface at the bottom of the counterweight block contacts the driven block. Since the side wall of the driven block is provided with a driving surface matching the driving inclined surface, as the counterweight block moves down, the driven block will be driven to slide along the side wall of the cross bar, and the driven block will then drive the sleeve to compress the return spring. When the counterweight block is separated from the driven block, the driven block can be extended from the inside of the cross bar and reset under the action of the return spring.

[0040] Reference Figure 7 Furthermore, in order to achieve stable sliding of the driven block 430 along the side wall of the cross bar 420, a through hole communicating with the inner cavity of the cross bar 420 is opened on the side wall of the cross bar 420, and the driven block 430 is slidably arranged in the through hole.

[0041] Reference Figure 6 As a preferred technical solution of this embodiment, the side support 70 includes a support column 710, a hydraulic support rod 720 and a side support wheel 730. The support column 710 is slidably arranged in the inner cavity of the cross bar 420 and can be extended from the inside of the cross bar to obtain a supporting effect. The hydraulic support rod 720 is vertically fixed at one end of the support column away from the cross bar, and the side support wheel 730 is arranged at the bottom of the hydraulic support rod;

[0042] Reference Figure 6 , Figure 8 , Fig. 9Furthermore, a driving gear 740 is also provided at the end of the lead screw 560, and a driven rack 750 is also provided on the side wall of the support column 710 to extend outward and mesh with the driving gear. At the same time, the support column 710 is placed on one side of the inner cavity of the cross bar 420 and is fixed with a sliding rod 760 that can slide along the sleeve 440. When in use, the driving motor 550 drives the lead screw to rotate, and it will drive the counterweight block to move vertically downward along the counterweight frame. In this process, the driving gear is synchronously driven to rotate, and the driving gear in turn drives the driven rack to slide on the side wall of the cross bar, and the driven rack in turn drives the support column to slide along the inner cavity of the cross bar. Since the support column is placed on one side of the inner cavity of the cross bar and a sliding rod is provided, the support column will synchronously drive the sliding rod to slide along the sleeve, so that the support column can be extended from the inner cavity of the cross bar to increase the support area, and then the hydraulic support rod is used to extend the side support wheel downward to The cam is in contact with the ground to achieve the auxiliary support effect of the side support. In addition, the side support wheels can also play an auxiliary movement effect during the movement of the entire transport frame; as the counterweight block continues to move downward, when the driving inclined surface at the bottom of the counterweight block contacts the driven block, it will drive the driven block to move toward the inner cavity of the cross bar, and the driven block will then drive the sliding rod to move synchronously through the sleeve and compress the return spring. At this time, under the drive of the sliding rod, the support column and the driven rack are driven to move, so that the driven rack and the active rack are out of mesh, which can limit the distance that the support rod extends out of the cross bar; when the driving motor drives the counterweight block to move upward through the lead screw to separate the counterweight block and the driven block, the driven block is extended into the inner cavity of the cross bar under the action of the restoring force of the return spring, thereby realizing the reset of the driven block. At the same time, under the drive of the driven block, the driven rack is driven to re-engage with the active gear through the sliding rod and the support column.

[0043] Reference Figure 7 Furthermore, in order to achieve stable sliding of the driven rack along the side wall of the cross bar, a sliding groove 421 is opened on one side wall of the cross bar 420, and the driven rack 750 is slidably set in the sliding groove 421, so that the driven rack can be driven to move in the sliding groove under the drive of the driving gear.

[0044] Furthermore, an engaging groove 422 is provided on the side wall of the other side of the cross bar 420, and an engaging strip 770 capable of cooperating with the engaging groove 422 is fixedly provided on the side wall of the support column 710 away from the driven rack 750. When in use, when the driven block moves toward the inner cavity of the cross bar, the sliding rod and the support column are driven to move toward the inner cavity of the cross bar through the sleeve, and the engaging strip on the side of the support column away from the driven rack engages with the engaging groove, so that when the support column is extended along the inner cavity of the cross bar, stable sliding can be achieved.

[0045] It should be noted that the two ends of the transmission mechanism in the present invention can be connected to the lifting end and the counterweight mechanism, that is, the transmission mechanism and the counterweight mechanism act synchronously. In this way, the driving force of the counterweight mechanism when it is working can be used to assist in lifting the lifting end, thereby reducing the lifting burden of the hand winch; in addition, the transmission mechanism can also be connected only to the counterweight mechanism, that is, the counterweight mechanism can work alone. At this time, the counterweight mechanism drives the counterweight block to move downward to achieve the extension or retraction of the side support from the cross bar.

[0046] When in use, when the two ends of the transmission mechanism need to be connected to the lifting end and the counterweight mechanism respectively, one end of the main transmission rope of the transmission mechanism is connected to the lifting end, and the branch transmission ropes on both sides are connected to the counterweight block. When the hand chain hoist works to pull up the I-beam, under the action of the driving motor of the counterweight mechanism, the counterweight block is driven to move down along the counterweight frame through the lead screw, thereby driving the transmission mechanism to transmit on the side wall of the transport frame. When the lead screw rotates, it drives the driven rack to slide along the side wall of the cross bar through the active gear, thereby driving the support column to extend from the inner cavity of the cross bar, and at the same time drives the sliding rod in the sleeve. Slide, thereby realizing the extension of the side support to achieve the auxiliary support effect. When the counterweight block continues to move downward and moves to the point where the driving inclined surface at its bottom contacts the driven block, the driven block will be driven to move toward the inner cavity of the cross bar. When the driven block moves, it drives the sliding rod and the support column to move through the casing, and finally separates the driven rack from the driving gear, so that the support column no longer extends outward, thereby realizing the auxiliary support function of the side support; after the auxiliary support of the side support is completed, as the counterweight block moves upward and the driven block is reset, the driven rack meshes with the driving gear again.

[0047] The above-described embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A grab ship I-beam lifting and landing transport frame, characterized in that: The invention comprises a frame (10) and a transport wheel (20) arranged at the bottom of the frame (10), and further comprises: A hand chain hoist (30), which is arranged on the top of the frame and is used for lifting operations; A side bracket, the side bracket comprising a vertical rod (410) fixedly mounted on a side wall of the frame body (10) and a horizontal rod (420) symmetrically arranged on two side walls of the vertical rod along a side surface where the vertical rod (410) is located; A counterweight mechanism, the counterweight mechanism being fixedly mounted on a side wall of the crossbar (420), and comprising a counterweight frame (510) and a counterweight block (520) capable of vertically moving along the counterweight frame; A transmission mechanism, the transmission mechanism being arranged between the lifting end (310) of the hand chain hoist (30) and the counterweight block (520), and being used for realizing synchronous displacement of the counterweight block (520) and the lifting end (310); and A side support (70) is movably arranged at the end of the cross bar (420), and the side support can be driven by the downward movement of the counterweight block (520) to extend outward from the inside of the cross bar (420) to achieve auxiliary support.

2. The I-beam lifting and transporting frame of a grab ship according to claim 1, characterized in that: The frame (10) comprises a rectangular parallelepiped frame and reinforcing columns (110) fixedly arranged on each side of the rectangular parallelepiped frame.

3. The I-beam lifting and landing transport frame of a grab ship according to claim 1, characterized in that: The counterweight mechanism also includes guide rails (530) arranged on two opposite side walls inside the counterweight frame (510), and guide blocks (540) cooperating with the guide rails are arranged at both ends of the counterweight block (520); a driving mechanism is fixedly arranged on the side wall of the counterweight frame (510), and the driving mechanism includes a driving motor (550), a lead screw (560) arranged at the output end of the driving motor, and a lead screw nut (570) that moves helically along the axial direction of the lead screw, and the end of the lead screw nut away from the lead screw is fixedly connected to the end of the counterweight block (520).

4. The I-beam lifting and transporting frame of a grab ship according to claim 3, characterized in that: The transmission mechanism includes a first transmission wheel (610) arranged at the top of the counterweight frame (510), a second transmission wheel (620) arranged on the side wall of the vertical rod (410), a conversion assembly arranged at the bottom end of the vertical rod, a main transmission rope (630) having one end connected to the lifting end and the other end passing through the first transmission wheel (610) and the second transmission wheel (620) in sequence and extending outward, a third transmission wheel (640) arranged at the top of the counterweight frame (510), and a branch transmission rope (650) having one end connected to the main transmission rope and the other end passing through the conversion assembly and extending through the third transmission wheel (640) to be connected to the counterweight block (520).

5. The I-beam lifting and landing transport frame of a grab ship according to claim 4, characterized in that: The conversion assembly comprises two conversion wheel groups arranged in a cross shape on the side wall of the vertical rod (410), each conversion wheel group comprising two fourth transmission wheels (661) arranged opposite to each other for the transmission rope (650) to pass through, and a mounting plate (662) arranged outside the two fourth transmission wheels and fixedly connected to the side wall of the vertical rod (410).

6. The I-beam lifting and transporting frame of a grab ship according to claim 3, characterized in that: A cavity is provided inside the cross bar (420); a driven block (430) is slidably connected to the side wall of the cross bar (420) close to the counterweight block (520); a driving inclined surface (521) matching the driven block is provided at the bottom of the counterweight block (520); a sleeve (440) is fixedly provided on the side wall of the inner cavity of the cross bar on which the driven block (430) is placed; a return spring (450) is provided between the side wall of the sleeve (440) away from the driven block (430) and the inner wall of the inner cavity of the cross bar.

7. The I-beam lifting and landing transport frame of a grab ship according to claim 6, characterized in that: A through hole communicating with the inner cavity of the cross bar (420) is formed on the side wall of the cross bar (420), and the driven block (430) is slidably disposed in the through hole.

8. The I-beam lifting and transporting frame of a grab ship according to claim 6, characterized in that: The side support (70) comprises a support column (710) slidably arranged in the inner cavity of the cross bar (420), a hydraulic support rod (720) vertically fixed at one end of the support column away from the cross bar, and a side support wheel (730) arranged at the bottom of the hydraulic support rod; the end of the lead screw (560) is also provided with a driving gear (740), and the side wall of the support column (710) is also provided with a driven rack (750) extending outward to mesh with the driving gear; the side wall of the support column (710) placed on one side of the inner cavity of the cross bar (420) is fixed with a sliding rod (760) capable of sliding along the sleeve (440).

9. The I-beam lifting and landing transport frame of a grab ship according to claim 8, characterized in that: A sliding groove (421) is provided on one side wall of the crossbar (420), and the driven rack (750) is slidably arranged in the sliding groove (421).

10. The I-beam lifting and landing transport frame of a grab ship according to claim 9, characterized in that: The side wall on the other side of the cross bar (420) is provided with an engagement groove (422), and the side wall of the support column (710) on the side away from the driven rack (750) is fixed with an engagement bar (770) capable of cooperating with the engagement groove (422).

Images