Assembling method of combined type shelving device applied to suspension arm and lifting hook

Abstract

The invention provides an assembling method of a combined type shelving device applied to a suspension arm and a lifting hook, which comprises the following steps: firstly, determining the position of a rack, welding and fixing the rack on a ship deck, then welding a supporting platform on one side of the rack and welding a mounting platform on the top of the rack respectively, and then vertically welding a suspension arm shelving frame on the mounting platform, the axis of the opening in the bracket and the horizontal straight line passing through the center of the mounting platform are located in the same vertical plane, finally, the vertical plane serves as the reference, a lifting hook placing frame is welded to the supporting platform, and it is guaranteed that the axis of the bracket and the axis of the inclined face of the first support are located in the same vertical plane; in this way, the variable amplitude and angle change of the lifting arm in the vertical plane are controlled, the lifting hook can be accurately lowered to the inclined face of the first support to be placed, and meanwhile the lifting arm can fall into the lifting arm placing frame. The lifting hook and the lifting arm can be accurately placed, and the method is simple and high in practicability.

Description

Technical Field

[0001] The invention relates to the technical field of cranes, and in particular to an assembly method of a combined shelving device applied to a boom and a hook. Background Art

[0002] Large cranes are usually installed on the decks of large engineering ships. Generally, the crane needs to control the hook to lift large and heavy cargoes. When the boom and hook are not needed to lift the cargoes, the boom and hook need to be placed on the ship to prevent the boom and hook from being affected by wind and waves and swaying at a large angle during the navigation of the ship. In order to better place the boom and hook, the placement device needs to be accurately assembled so that the boom, hook and placement device can be reasonably matched.

[0003] For example, the patent document with Chinese patent application number 202211077388.6 and publication date 2022.11.01 discloses a method for installing a crane rack and hook box integrated structure on the hull outer plate, comprising the following steps: S1. Pre-assemble and match the transverse tube and the toggle plate slot of the crane rack and hook box integrated structure on the ground, and then move the toggle plate away from the transverse tube; S2. Install a block on the hull outer plate along the direction of the transverse tube as an inner fulcrum; S3. Add a support seat on the outer side of the crane rack and hook box integrated structure as an outer fulcrum; S4. Weld the weld between the toggle plate and the hull outer plate; S5. Contract the threaded pull rod to slide the crane rack and hook box integrated structure to the transverse tube to contact the hull outer plate; S6. Weld the weld between the transverse tube and the main hull outer plate, as well as the weld between the transverse tube slot and the toggle plate to complete all welding work on the crane rack and the hook box body; S7. Remove the support seat.

[0004] The above document discloses welding and assembly between the crane rack and the hook box integrated structure and the hull outer plate, so that the connection between the crane rack and the hook box integrated structure and the hull outer plate is more stable; however, when placing the hook, the hook will keep shaking, making it difficult for the operator to quickly put the hook into the hook box, so other placing devices are needed to place the hook. In order to make the boom, the hook and the placing device reasonably cooperate, the placing device needs to be reasonably and accurately assembled. Summary of the invention

[0005] The object of the present invention is to provide an assembly method for a combined placing device applied to a boom and a hook, which can enable the hook and the boom to be placed accurately, and the method is simple and highly practical.

[0006] To achieve the above object, an assembly method of a combined shelving device applied to a boom and a hook comprises the following steps: S1 Determine the position of the stand on the ship deck, and then fix and weld the bottom of the stand to the ship deck; S2 Weld a support platform on one side of the stand so that the support platform is perpendicular to the vertical axis of the stand, and then weld a fixing rod between the stand and the support platform; S3 welds the mounting platform on the top of the rack so that the mounting platform and the bottom of the rack are parallel to the mounting surface of the deck; S4 Weld the boom support frame to the installation platform so that the bracket and the installation platform are vertically arranged and the axis of the opening on the bracket and the horizontal line passing through the center of the installation platform are in the same vertical plane; S5, taking the vertical plane of step S4 as a reference, draws an intersecting straight line between the vertical plane and the plane where the support platform is located on the support platform, and then respectively measures the width of the first bracket and the second bracket, and the distance between the flush ends of the first bracket and the second bracket; S6: Taking the intersecting straight line of step S5 as a reference, draw a first straight line perpendicular to the intersecting straight line on the plane where the support platform is located, then take the intersection of the first straight line and the intersecting straight line as a starting point, draw a fixed point on the first straight line, make the distance between the intersection and the fixed point equal to the half value of the width of the first bracket, then take the intersecting straight line as a symmetry axis, draw a symmetric point of the fixed point on the first straight line, and obtain the fixed point position of the first bracket on the support platform; S7 repeats step S6 to make a second straight line, so that the distance between the first straight line and the second straight line is equal to the distance between the flush ends of the first bracket and the second bracket, and obtains the fixed point position of the second bracket on the supporting platform; S8 places the assembled hook shelf rack on the fixed point position of the support platform, and welds and fixes the first bracket and the second bracket.

[0007] The purpose of the above method is to ensure that the axis of the bracket and the axis of the inclined surface of the first bracket are in the same vertical plane, so that when the hook is located above the hook shelf through the boom amplitude change, it can be ensured that the boom is also located in the vertical plane. It only needs to control the boom to change the angle in the vertical plane, so that the hook can be accurately lowered to the inclined surface of the first bracket to complete the placement, and the boom can also fall into the boom shelf.

[0008] Furthermore, step S1 also includes taking the center of the rotary platform base as a reference point, and then setting the gantry position installation point on a horizontal straight line passing through the reference point, so that the distance between the reference point and the installation point is equal to 2 / 3 of the boom length.

[0009] The above arrangement facilitates the measurement of the distance between the step and the rotary platform, thereby facilitating the installation of the stand. Further, the vertical axis of the stand is made to coincide with the installation point.

[0010] The above arrangement can ensure that the center of the gantry and the center of the rotary platform are in the same plane, thus ensuring that the boom is accurately placed on the gantry.

[0011] Furthermore, step S2 also includes placing the lifting platform on the mounting surface with the mounting point as a reference, and then placing the support platform on the lifting platform, raising the support platform to a desired height through the lifting platform, and then welding one end of the support platform to the frame, welding the fixing rod to the other end of the support platform, and finally welding the fixing rod to the frame.

[0012] The above arrangement can ensure that the vertical axis of the support platform and the frame are perpendicular after welding.

[0013] Furthermore, step S3 also includes making the axis of the installation platform and the horizontal line passing through the reference point in the same vertical plane.

[0014] With the above arrangement, after the boom is aligned with the straight line where the platform is located, the boom can be accurately lowered onto the bracket of the mounting platform.

[0015] Furthermore, step S4 also includes taking the axis of the opening on the bracket as a reference, making a third straight line perpendicular to the axis of the opening on the bracket on the plane where the bracket is located, determining the angle between the third straight line and the axis of the bracket by the angle between the axis of the bracket and the axis of the opening, and then measuring the distance between the bracket and the axis of the opening on the bracket to determine the inclination angle of the bracket, and then fixing the bracket on the bracket, and then installing the roller assembly on the bracket.

[0016] The above arrangement, by setting a bracket and installing a roller group on the bracket, can enable the boom lowered into the opening to achieve rolling connection through the roller group, thereby reducing noise generated by friction and reducing the wear of the boom. The boom can move in the axial direction of the opening due to rolling, and the axis where the bracket is located is inclined inward and downward toward the axial direction of the opening, so that the rolling friction force generated when subjected to external force causes the boom to move downward into the bracket, reducing the possibility of the boom moving outward due to external force, and thus slowing down the moving distance of the boom in the axial direction of the opening, making the placement of the boom more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the placement of the boom and hook in the present invention.

[0018] Figure 2 It is a front view of the boom shelf in the present invention.

[0019] Figure 3 It is a top view of the boom shelf in the present invention.

[0020] Figure 4 It is a side view of the boom shelf in the present invention.

[0021] Figure 5It is a side view of the roller device in the present invention.

[0022] Figure 6 It is a top view of the roller device in the present invention.

[0023] Figure 7 It is a front view of the roller device in the present invention.

[0024] Figure 8 for Figure 2 Enlarged view of point A in the middle.

[0025] Fig. 9 It is a side view of the hook shelf in the present invention.

[0026] Fig.10 It is a front view of the hook shelf in the present invention.

[0027] Fig.11 It is a schematic diagram of the installation of the buffer gasket in the present invention.

[0028] Fig.12 It is a schematic diagram of placing the hook on an inclined surface in the present invention.

[0029] Fig.13 for Fig.10 Enlarged view of center C.

[0030] Fig.14 for Figure 1 Enlarged view of point B in the middle.

[0031] Fig.15 It is a schematic diagram of determining the tilt angle of the bracket in the present invention.

[0032] Fig.16 It is a top plan view schematic diagram of the installation platform on the stand in the present invention.

[0033] Fig.17 It is a top plan view schematic diagram for determining the position of the fixing point of the hook shelf in the present invention.

[0034] Fig.18 It is a schematic diagram for determining the installation position of the stand in the present invention. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] like Figures 1 to 18As shown, an assembly method of a combined mounting device for a boom and a hook comprises a stand, a boom mounting frame and a hook mounting frame, wherein the boom mounting frame is arranged on a mounting platform s4 on the top of the stand s1, the bottom of the stand s1 is fixed on the ship deck, a supporting platform s2 is vertically arranged on one side of the stand s1, one end of the supporting platform s2 is fixedly connected to the stand s1, and the other end of the supporting platform s2 is fixedly connected to the stand s1 through a fixing rod s3, the hook is mounted on the supporting platform s2, and the hook mounting frame comprises a limiting device, a first bracket 1 and a second bracket 2, and the second bracket 2 is provided with an inclined surface 21.

[0037] The boom shelf frame includes a bracket a1 and two roller devices, and limit blocks are respectively provided on both sides of the top of the bracket a1, and an opening a3 is formed between the limit blocks. The roller device is arranged in the opening a3 and is located on one side of the limit block. By setting the limit block, the opening a3 can be formed on the bracket a1, so that the boom slides into the opening a3 along the limit block, thereby limiting the boom from swinging left and right, playing the role of shelving and limiting the swing of the boom; support frames are provided on both sides of the bottom of the bracket a1, and the support frames are fixed to the bottom of the bracket a1 by welding, and the support frames include a support frame-a 41 and support frame a42, support frame a41 is vertically connected to bracket a1, one end of support frame a42 is vertically connected to bracket a1, and the other end of support frame a42 is set to deviate outward, so that bracket a1 can be supported by the support frame, and support frame a42 is set to deviate outward, so that the downward projection surface of the space enclosed by the support frame is increased, thereby improving the stability of the support. In this embodiment, the number of support frame a41 and support frame a42 is set to two, and support frame a41 and support frame a42 are fixed to the top of the stand s1 by bolts.

[0038] like Figure 2 and 8As shown, one side of the limit block is provided with a chamfered portion a21, a connecting portion a22 and a supporting portion a23, an angle a is formed between the top of the limit block and one end of the chamfered portion a21, and the angle range of the angle a is 120°~130°, and an angle b is formed between the other end of the chamfered portion a21 and one end of the connecting portion a22, and the angle range of the angle b is 130°~145°. In this embodiment, the angle a is 127°, the angle b is 143°, and the other end of the connecting portion a22 is plane-connected to one end of the supporting portion a23, that is, the upper end surface of the other end of the connecting portion a22 is flush with one end of the supporting portion a23 after being connected, and the other end of the supporting portion a23 is fixedly connected to the bracket a1 The width of the other end of the support portion a23 is greater than the width of one end of the support portion a23. By setting the chamfered portion a21, it can play a guiding role in the lowering process of the boom, so that the boom can slide into the opening along the connecting portion a22, and the support portion a23 can increase the contact area between the limit block and the bracket a1, so that the connection between the limit block and the bracket a1 can withstand greater stress. A pad a24 is provided on the chamfered portion a21 and the connecting portion a22. In this embodiment, the pad a24 is a sleeper, and a screw hole a25 is provided on the sleeper. The sleeper is fixed to the chamfered portion a21 and the connecting portion a22 by screws, so as to prevent the boom from directly colliding with the limit block and causing friction, which in turn causes wear of the boom.

[0039] In this embodiment, if Figure 2 , 8 As shown, the limit block includes a limit block 1 211 and a limit block 222. The limit block 1 211 and the limit block 222 are symmetrically and parallelly arranged on both sides of the top of the bracket a1 about the axis a5 where the opening a3 is located. The width of the opening a3 is greater than the width of the boom, so that the limit block 1 211 and the limit block 222 can limit the boom, so that the boom can be placed in the opening a3 during the lowering process.

[0040] like Figure 4-8 As shown, the roller device includes a bracket 11 and more than two roller groups. The bracket 11 is arranged on one side of the limit block along the axis a5 direction of the opening a3. An angle c is formed between the axis 9 where the bracket 11 is located and the axis a5 where the opening a3 is located. In this embodiment, the angle of the angle c is 10°. The roller group is detachably installed on the bracket 11 along the width direction of the bracket 11. The roller group includes a pin 12, a limiter (not marked in the figure) and more than two rollers 13. The roller 13 is sleeved on the pin 12. One end of the pin 12 is provided with a through hole matching the fixing member. The limiter is detachably arranged on the pin 12 through the through hole. In this embodiment, the number of rollers in each roller group is set to three, and the limiter is a latch.

[0041] like Figure 4-7As shown, the lower end of the bracket 11 is fixed on the bracket a1, and the upper end of the bracket 11 is fixed with more than two mounting plates 14 along the length direction of the bracket 11. The mounting plates 14 are provided with intervals 15 and are arranged in parallel. The mounting plates 14 are provided with more than two through holes 16. The through holes 16 at the same position of adjacent mounting plates 14 are coaxially arranged. The top plane 17 of the mounting plate 14 is lower than the top of the roller 13. In this way, after the boom is placed on the bracket a1, the flat plate on the boom can abut against the roller 13. During the movement, the flat plate and the roller 13 can roll, thereby reducing friction and noise. At the same time, the width of the interval 15 between the mounting plates 14 is greater than the width of the roller 13, and the distance between the centers of the two through holes 16 on the same mounting plate 14 is greater than the diameter of the roller 13, so that the roller 13 can be installed between the two mounting plates 14, and the rotation of the rollers 13 between the adjacent roller groups does not interfere with each other.

[0042] like Figure 9-12 As shown, one end of the first bracket 1 is fixedly connected to one end of the second bracket 2 through a connecting column 3, and an angle f is formed between the first bracket 1 and the second bracket 2 at the connection, and the angle f is 30°~45°. In this embodiment, the angle f is 30°, and the second bracket 2 is provided with an inclined surface 21, and a buffer gasket 22 is fixedly provided on the inclined surface 21 along the length direction of the second bracket 2, as shown in FIG. Fig.11 As shown, the buffer gasket 22 is provided with more than two countersunk holes 23, and the buffer gasket 22 is fixed to the inclined surface 21 by means of bolts 24 passing through the countersunk holes 23. In this way, during the lowering process of the hook z1, the sliding friction between the hook z1 and the inclined surface 21 can be reduced, and the hook z1 can slide down along the inclined surface 21 and into the limit opening 5 under the action of its own gravity. In this embodiment, the buffer gasket 22 is a sleeper.

[0043] like Fig.13As shown, the limit device includes more than two stoppers 4. In this embodiment, the number of the stoppers 4 is set to two. The stoppers 4 are relatively arranged on the inclined surface 21, and a limit opening 5 is formed between the two stoppers 4. The two stoppers 4 are symmetrically arranged on both sides of the buffer gasket 22 about the axis 6 where the limit opening 5 is located and are perpendicular to the inclined surface 21. The stopper 4 is located on one side of the limit opening 5 and is provided with an inclined portion 41 and a connecting portion 42. The connecting portion 42 is connected to the inclined portion 41. One end of the inclined portion 41 is connected to the top of the stopper 4 to form an angle d. The angle d is 110°~125°. The other end of the inclined portion 41 is connected to the connecting portion 42. One end of the connecting portion 42 is connected to form an angle e, and the angle e is 145°~160°. The other end of the connecting portion 42 is vertically connected to the bottom of the stopper 4. In this embodiment, the angle d is 110°, and the angle e is 160°. In this way, the hook z1 that slides down into the limiting opening 5 can be limited by the inclined portion 41, so that the two sides of the pulley z2 on the hook z1 abut against the inclined portion 41, so that the inclined portion 41 generates an oblique upward and outward force on the two sides of the pulley z2 on the hook z1, so that the pulley z2 on the hook z1 is clamped between the inclined portions 41, and the hook z1 is stopped on the second bracket 2.

[0044] like Fig.12 As shown, the width of the pulley z2 on the hook z1 is greater than the width between the inclined portions 41, and the width between the inclined portions 41 is greater than or equal to the width between the connecting portions 42, so that the hook z1 can pass through between the connecting portions 42, and the inclined portions 41 can be used to clamp the two sides of the pulley z2 on the hook z1, so that the hook z1 can be stopped between the block blocks 4 to be placed.

[0045] like Fig. 9 As shown, a support rod 7 is provided at the bottom of the stopper 4, one end of the support rod 7 is fixedly connected to the bottom of the stopper 4, the other end of the support rod 7 passes through the second bracket 2 and abuts against the contact plane, and more than two connecting rods 8 are provided between the first bracket 1 and the second bracket 2, and the two ends of the connecting rod 8 are fixedly connected to the first bracket 1 and the second bracket 2 respectively, so that the stability between the first bracket 1 and the second bracket 2 can be strengthened.

[0046] The following specific steps are also included: S1 determines the position of the platform s1 on the ship deck. In this embodiment, the distance from the platform s1 to the rotating platform is less than the length of the boom, as follows: Fig.18 As shown, the center O1 of the slewing platform base s5 is taken as the reference point, and then the position installation point O2 of the gantry s1 is set on the horizontal straight line q7 passing through the reference point, so that the distance d5 between the reference point and the installation point O2 is equal to 2 / 3 of the boom length, and the vertical axis q1 of the gantry s1 coincides with the installation point O2, and then the bottom of the gantry s1 is fixed and welded to the ship deck.

[0047] S2 welds the support platform s2 on one side of the stand s1 so that the support platform s2 is perpendicular to the vertical axis q1 of the stand 1, and then welds the fixing rod s3 between the stand s1 and the support platform s2. Specifically, take the installation surface where the installation point O2 in step S1 is located as a reference, place the lifting platform (not shown in the figure) on the installation surface, and then place the support platform s2 on the lifting platform. The support platform s2 is raised to the required height by the lifting platform. In this embodiment, the support platform s2 is raised to 1 / 5 of the height of the stand s1, and then one end of the support platform s2 is welded and fixed to the stand s1, and the fixing rod s3 is welded to the other end of the support platform s2. Finally, the fixing rod s3 is welded to the stand s1.

[0048] S3 welds the mounting platform s4 on the top of the stand s1, so that the mounting platform s4 is arranged parallel to the mounting surface of the bottom of the stand s1 and the deck, and the axis q2 of the mounting platform s4 and the horizontal straight line passing through the reference point are in the same vertical plane.

[0049] S4 Weld the boom shelf to the installation platform s4. Figure 15-16 As shown, the bracket a1 is vertically arranged to the mounting platform s4 and the axis 5 of the opening on the bracket a1 and the horizontal line q2 passing through the center O of the mounting platform s4 are in the same vertical plane. Then, taking the axis 5 of the opening on the bracket as a reference, a third straight line q3 perpendicular to the axis 5 of the opening on the bracket a1 is made on the plane where the bracket a1 is located. The angle g between the third straight line q3 and the axis 9 where the bracket is located is determined by the angle c between the axis 9 where the bracket is located and the axis 5 where the opening is located. Then, the distance d1 between the bracket 11 and the axis 5 of the opening on the bracket is measured, thereby determining the inclination angle of the bracket 11, fixing the bracket 11 on the bracket a1, and then installing the roller assembly on the bracket 11.

[0050] S5 is based on the vertical plane of step S4, such as Fig. 9 , 10 As shown in Figures 17, a straight line q4 is made on the support platform a2 to intersect the vertical plane with the plane s5 where the support platform a2 is located, and then the width d2 of the first bracket 1 and the second bracket 2 and the distance d3 between the flush ends of the first bracket 1 and the second bracket 2 are measured respectively.

[0051] S6 takes the intersecting straight line q4 in step S5 as a reference, and makes a first straight line q5 perpendicular to the intersecting straight line q4 on the plane s5 where the supporting platform is located, and then takes the intersection D of the first straight line q5 and the intersecting straight line q4 as a starting point, and makes a fixed point W1 on the first straight line q5, so that the distance between the intersection D and the fixed point W1 is equal to the half value of the width d2 of the first bracket 1, and then takes the intersecting straight line q4 as the axis of symmetry, and makes a symmetrical point of the fixed point W1 on the first straight line q5. In this embodiment, the symmetrical point is set to another fixed point W2, and the fixed point positions W1 and W2 of the first bracket 1 on the supporting platform s2 are obtained.

[0052] S7 Fig.17 As shown, repeat step S6 to make the second straight line q6, so that the distance d4 between the first straight line q5 and the second straight line q6 is equal to the distance d3 between the flush ends of the first bracket 1 and the second bracket 2, and obtain the fixed point positions W3 and W4 of the second bracket 2 on the supporting platform s2.

[0053] S8 places the assembled hook shelf on the fixed point positions W1, W2, W1, W2 of the support platform s2, and welds and fixes the first bracket 1 and the second bracket 2.

[0054] The working principle of the present invention is as follows: first determine the position of the stand, and weld the stand to fix it on the ship deck, then weld a supporting platform on one side of the stand and a mounting platform on the top of the stand respectively, then vertically weld a boom shelf frame on the mounting platform, and make the axis of the opening on the bracket and the horizontal straight line through the center of the mounting platform in the same vertical plane, finally weld a hook shelf frame on the supporting platform with the vertical plane as a reference, and ensure that the axis of the bracket and the axis of the inclined surface of the first bracket are in the same vertical plane, so that the boom can be controlled to change the amplitude and angle in the vertical plane, so that the hook can be accurately lowered to the inclined surface of the first bracket to complete the placement, and the boom can fall into the boom shelf frame at the same time.

Claims

1. An assembly method for a combined shelving device applied to a boom and a hook, characterized in that: The following steps are involved: S1 Determine the position of the stand on the ship deck, and then fix and weld the bottom of the stand to the ship deck; S2 Weld a support platform on one side of the stand so that the support platform is perpendicular to the vertical axis of the stand, and then weld a fixing rod between the stand and the support platform; S3 welds the mounting platform on the top of the rack so that the mounting platform and the bottom of the rack are parallel to the mounting surface of the deck; S4 Weld the boom support frame to the installation platform so that the bracket and the installation platform are vertically arranged and the axis of the opening on the bracket and the horizontal line passing through the center of the installation platform are in the same vertical plane; S5, taking the vertical plane of step S4 as a reference, draws an intersecting straight line between the vertical plane and the plane where the support platform is located on the support platform, and then respectively measures the width of the first bracket and the second bracket, and the distance between the flush ends of the first bracket and the second bracket; S6: Taking the intersecting straight line of step S5 as a reference, draw a first straight line perpendicular to the intersecting straight line on the plane where the support platform is located, then take the intersection of the first straight line and the intersecting straight line as a starting point, draw a fixed point on the first straight line, make the distance between the intersection and the fixed point equal to the half value of the width of the first bracket, then take the intersecting straight line as a symmetry axis, draw a symmetric point of the fixed point on the first straight line, and obtain the fixed point position of the first bracket on the support platform; S7 repeats step S6 to make a second straight line, so that the distance between the first straight line and the second straight line is equal to the distance between the flush ends of the first bracket and the second bracket, and obtains the fixed point position of the second bracket on the supporting platform; S8 places the assembled hook shelf rack on the fixed point position of the support platform, and welds and fixes the first bracket and the second bracket.

2. The assembly method of the combined shelving device applied to the boom and the hook according to claim 1, characterized in that: Step S1 also includes taking the center of the rotary platform base as a reference point, and then setting the gantry position installation point on a horizontal straight line passing through the reference point, so that the distance between the reference point and the installation point is equal to 2 / 3 of the boom length.

3. The assembly method of the combined shelving device applied to the boom and the hook according to claim 2, characterized in that: Make the vertical axis of the stand coincide with the mounting point.

4. The assembly method of the combined shelving device applied to the boom and hook according to claim 1, characterized in that: Step S2 also includes placing the lifting platform on the mounting surface with the mounting point as a reference, and then placing the support platform on the lifting platform, raising the support platform to the required height through the lifting platform, and then welding one end of the support platform to the frame, welding the fixing rod to the other end of the support platform, and finally welding the fixing rod to the frame.

5. The assembly method of the combined shelving device applied to the boom and the hook according to claim 1, characterized in that: Step S3 also includes making the axis of the installation platform and the horizontal straight line passing through the reference point in the same vertical plane.

6. The assembly method of the combined shelving device applied to the boom and hook according to claim 1, characterized in that: Step S4 also includes taking the axis of the opening on the bracket as a reference, drawing a third straight line perpendicular to the axis of the opening on the bracket on the plane where the bracket is located, determining the angle between the third straight line and the axis of the bracket through the angle between the axis of the bracket and the axis of the opening, and then measuring the distance between the bracket and the axis of the opening on the bracket to determine the inclination angle of the bracket, and then fixing the bracket on the bracket and installing the roller assembly on the bracket.

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