A method for quickly assembling a boom

Abstract

The present application provides a kind of quick assembly method of boom, first connector is embedded into first connecting seat, realize the quick connection of auxiliary arm and pulley frame, second connector is embedded into second connecting seat, realize the quick connection of main arm and pulley frame, when welding, auxiliary arm will not swing relative to pulley frame, pulley frame will not swing relative to main arm, good stability, high working efficiency when welding.

Description

Technical Field

[0001] This invention relates to the field of crane booms, and more specifically to a method for rapid assembly of crane booms. Background Technology

[0002] Marine cranes are specialized cranes used in maritime environments for transport operations, primarily for crucial tasks such as cargo transfer between ships, replenishment at sea, and deployment and retrieval of underwater equipment. The unique marine environment presents significant challenges to the control of marine cranes. The boom is a vital component of a marine crane. It is composed of multiple boom segments, allowing for adaptability to various environments and enabling combined load-bearing capacity. Adjacent boom segments are interconnected.

[0003] Chinese patent application number 201620351260.8, published on September 21, 2016, discloses a tower crane boom connection structure. The chords of the first boom and the second boom are connected and fixed in a one-to-one correspondence. The right end face of the first boom chord has a U-shaped locking protrusion, which is inserted into a slot on the left end face of the second boom chord. A pin passes through and extends out of a fixing hole on the locking protrusion and the slot. The locking protrusion and the first boom chord are an integral structure.

[0004] In this connection structure, the first boom and the second boom are connected only by a pin. During assembly, the locking protrusion on the first boom needs to be inserted into the slot on the second boom, and then the positioning pin is inserted laterally through and out of the fixing hole provided on the locking protrusion and the slot to complete the assembly. However, since the locking protrusion needs to be inserted into the slot first, it can only restrict the movement of the locking protrusion and the slot in the vertical direction, but not in the front-back direction. If the front-back direction is allowed, the positioning pin cannot be inserted accurately, resulting in low installation reliability and poor stability between the first boom and the second boom. Summary of the Invention

[0005] This invention provides a method for rapid assembly of a boom. A first connector is embedded in a first connecting seat to achieve rapid connection between the auxiliary boom and the pulley frame. A second connector is embedded in a second connecting seat to achieve rapid connection between the main boom and the pulley frame. During welding, the auxiliary boom will not swing relative to the pulley frame, and the pulley frame will not swing relative to the main boom, resulting in good stability and high work efficiency during welding.

[0006] To achieve the above objectives, the technical solution of the present invention is: a method for rapid assembly of a crane boom, comprising the following steps: S1. Place the pulley frame horizontally on the support surface, with the first connecting seat of the pulley frame vertically upward.

[0007] S2. The first hook lifts the auxiliary boom above the pulley frame, aligning the first connecting plate with the first connecting seat.

[0008] S3. Move the auxiliary arm to embed the first connecting plate into the first receiving cavity of the first connecting seat, and then connect the pin on the first connecting plate and the first connecting seat.

[0009] S4. Weld the first welding plate of the pulley frame to the second welding plate of the auxiliary arm.

[0010] S5. The second hook lifts the welded main boom and sets the main boom vertically on the support surface; the second connecting plate of the main boom is set vertically upward.

[0011] S6. Move the auxiliary boom connected to the pulley frame above the main boom so that the second connecting plate is aligned with the second connecting seat.

[0012] S7. Move the pulley frame to embed the second connecting plate into the second receiving cavity of the second connecting seat, and then connect the pin shaft on the second connecting plate and the second connecting seat.

[0013] S8. Weld the third welding plate of the pulley frame to the fourth welding plate of the main arm.

[0014] The above method achieves rapid alignment of the sub-arm and pulley frame during assembly by embedding the first connector into the first connecting seat, and rapid connection of the sub-arm and pulley frame via the connecting pin. This ensures that the sub-arm will not swing relative to the pulley frame during welding of the first and second welding plates, resulting in good stability and high welding efficiency. Similarly, the method achieves rapid alignment of the main arm and pulley frame by embedding the second connector into the second connecting seat, and rapid connection of the main arm and pulley frame via the connecting pin. This ensures that the pulley frame will not swing relative to the main arm during welding of the third and fourth welding plates, resulting in good stability and high welding efficiency. Furthermore, by first placing the pulley frame horizontally on the support surface, the boom can be assembled quickly and the assembly method is simple.

[0015] Further, the welding of the main boom includes the following steps: A1. Weld the fifth welding plate at the ends of adjacent boom sections that are close to each other.

[0016] A2. Place adjacent boom sections on a support surface at the same horizontal level; weld the fifth welding plate of one boom section to the fifth welding plate of another boom section, and weld adjacent boom sections together to form the main boom.

[0017] The above method connects adjacent boom sections through a fifth welding plate, with one fifth welding plate flush with another, facilitating welding operations.

[0018] Furthermore, this is achieved through a modular boom, which includes a sub-boom and a pulley frame. The pulley frame has a first connecting seat on the side near the sub-boom, and the first connecting seat has a first receiving cavity. The sub-boom has a first connecting plate on the end near the pulley frame, and the first connecting plate is embedded in the first receiving cavity. The first connecting plate and the first connecting seat are connected by a pin. The pulley frame has a first welding plate on the side near the sub-boom, and the sub-boom has a second welding plate on the end near the pulley frame. When the first connecting plate is connected to the first connecting seat, the first welding plate and the second welding plate abut against each other, and the first welding plate and the second welding plate are welded together.

[0019] The above setup, via a pin connecting the first connecting plate and the first connecting seat, achieves the initial connection between the auxiliary boom and the pulley frame, allowing the first welding plate and the second welding plate to abut against each other, facilitating subsequent welding. Simultaneously, the first connecting seat and the first connecting plate provide initial positioning of the auxiliary boom and the pulley frame, ensuring their close contact. Welding the first and second welding plates together achieves a secondary connection between the auxiliary boom and the pulley frame, resulting in good stability. Furthermore, the cooperation between the first and second welding plates increases the contact area between the auxiliary boom and the pulley frame, further enhancing the welding effect. Under the combined action of the first and second welding plates, and the first connecting plate and the first connecting seat, a stable connection between the auxiliary boom and the pulley frame is achieved. Welding the auxiliary boom and the pulley frame based on the pin connection ensures that the pulley frame is fixed relative to the auxiliary boom along both the length and height directions of the boom, thus providing good stability.

[0020] Furthermore, a main boom is provided on the side of the pulley frame away from the auxiliary boom. The main boom includes two or more boom sections, which are welded together with adjacent boom sections. A third welding plate is provided on the side of the pulley frame near the main boom, and a fourth welding plate is provided on the boom section of the main boom near the pulley frame. The third welding plate and the fourth welding plate are welded together.

[0021] With the above configuration, the pulley frame and the main boom are connected by a third and a fourth welding plate, which increases the contact area between the main boom and the pulley frame and improves stability.

[0022] Furthermore, a second connecting seat is provided on the side of the pulley frame near the main boom, and a second receiving cavity is provided in the second connecting seat. A second connecting plate is provided on the boom section of the main boom near the pulley frame. The second connecting plate is embedded in the second receiving cavity. The second connecting plate and the second connecting seat are connected by a pin. When the second connecting plate and the second connecting seat are connected, the third welding plate and the fourth welding plate abut against each other.

[0023] The above configuration achieves the initial connection between the main boom and the pulley frame by connecting the second connecting plate and the second connecting seat with a pin shaft, allowing the third welding plate and the fourth welding plate to abut against each other for subsequent welding. At the same time, the second connecting seat and the second connecting plate provide initial positioning for the main boom and the pulley frame, ensuring that the main boom and the pulley frame fit together. The second connection between the main boom and the pulley frame is achieved by welding the first welding plate and the second welding plate, resulting in good stability.

[0024] Furthermore, the ends of adjacent boom sections are respectively provided with fifth welding plates, and one fifth welding plate is welded to another fifth welding plate.

[0025] The above setup, by using one fifth welding plate in conjunction with another fifth welding plate, increases the contact area between adjacent boom sections, resulting in good welding stability. Attached Figure Description

[0026] Figure 1 This is a front view of the boom assembled according to the present invention.

[0027] Figure 2 This is a top view of the boom assembled according to the present invention.

[0028] Figure 3 for Figure 2 A magnified view of 'a' in the middle.

[0029] Figure 4 This is a schematic diagram showing the connection between the first connecting seat and the second connecting member in the boom of the present invention.

[0030] Figure 5 This is a schematic diagram of the pulley frame, auxiliary boom, and boom section after separation in the boom of the present invention.

[0031] Figure 6 This is a flowchart of the present invention. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0033] like Figure 1-5As shown, a method for rapid assembly of a boom is provided. The splicing boom includes a main boom 3, a secondary boom 1, and a pulley frame 2. The pulley frame 2 is located between the main boom 3 and the secondary boom 1. A first connecting seat 4 is provided on the side of the pulley frame 2 near the secondary boom 1. The first connecting seat 4 has a first receiving cavity 41. A first connecting plate 5 is provided on the end of the secondary boom 1 near the pulley frame 2. The first connecting plate 5 is embedded in the first receiving cavity 41. The first connecting plate 5 is connected to the first connecting seat 4 by a pin (not shown in the figure). A first welding plate 21 is provided on the side of the pulley frame 2 near the secondary boom 1. A second welding plate 11 is provided on the end of the secondary boom 1 near the pulley frame 2. When the first connecting plate 5 is connected to the first connecting seat 4, the first welding plate 21 and the second welding plate 11 abut against each other. The first welding plate 21 and the second welding plate 11 are welded together.

[0034] The first connecting plate 5 and the first connecting seat 4 are connected by a pin to achieve the initial connection between the auxiliary boom 1 and the pulley frame 2, so that the first welding plate 21 and the second welding plate 11 abut against each other, which facilitates subsequent welding. At the same time, under the action of the first connecting seat 4 and the first connecting plate 5, the auxiliary boom 1 and the pulley frame 2 are initially limited, so that the auxiliary boom 1 and the pulley frame 2 fit together. The secondary connection between the auxiliary boom 1 and the pulley frame 2 is achieved by welding the first welding plate 21 and the second welding plate 11, which has good stability. At the same time, the cooperation between the first welding plate 21 and the second welding plate 11 increases the contact area between the auxiliary boom 1 and the pulley frame 2, which further improves the welding effect. Under the action of the first welding plate 21 and the second welding plate 11, and the action of the first connecting plate 5 and the first connecting seat 4, a stable connection between the auxiliary boom 1 and the pulley frame 2 is achieved. At the same time, the auxiliary boom 1 and the pulley frame 2 are welded on the basis of the pin connection. Along the length and height directions of the boom, the pulley frame 2 is fixed relative to the auxiliary boom 1, which has good stability.

[0035] The main boom 3 includes two or more boom sections 31, which are welded together with each other. A second connecting seat 6 is provided on the side of the pulley frame 2 near the main boom 3. The second connecting seat 6 has a second accommodating cavity. A second connecting plate 7 is provided on the boom section 31 of the main boom 3 near the pulley frame 2. The second connecting plate 7 is embedded in the second accommodating cavity. The second connecting plate 7 and the second connecting seat 6 are connected by a pin. A third welding plate 22 is provided on the side of the pulley frame 2 near the main boom 3. A fourth welding plate 32 is provided on the boom section 31 of the main boom 3 near the pulley frame 2. When the second connecting plate 7 is connected to the second connecting seat 6, the third welding plate 22 and the fourth welding plate 32 abut against each other. The third welding plate 22 and the fourth welding plate 32 are welded together.

[0036] The above configuration, via a pin connecting the second connecting plate 7 and the second connecting seat 6, achieves an initial connection between the main arm 3 and the pulley frame 2, allowing the third welding plate 22 and the fourth welding plate 32 to abut against each other, facilitating subsequent welding. Simultaneously, the second connecting seat 6 and the second connecting plate 7 provide initial positioning of the main arm 3 and the pulley frame 2, ensuring their close contact. The secondary connection between the main arm 3 and the pulley frame 2 is achieved through welding the first welding plate 21 and the second welding plate 11, resulting in good stability. The cooperation between the pulley frame 2 and the main arm 3 via the third welding plate 22 and the fourth welding plate 32 increases the contact area between them, further enhancing stability.

[0037] In this embodiment, a fifth welding plate 33 is provided at the end of each adjacent boom section 31, and one fifth welding plate 33 is welded to another fifth welding plate 33. By providing one fifth welding plate 33 to cooperate with another fifth welding plate 33, the contact area between adjacent boom sections 31 is increased, and the welding stability is good.

[0038] like Figure 6 As shown, the rapid assembly method for the boom includes the following steps: A1. Weld the fifth welding plate 33 to the ends of adjacent boom sections 31 that are close to each other.

[0039] A2. Place adjacent boom sections 31 on a support surface at the same horizontal level; weld the fifth welding plate 33 of one boom section 31 to the fifth welding plate 33 of another boom section, and weld adjacent boom sections 31 together to form the main boom 3.

[0040] S1. Place the pulley frame 2 horizontally on the support surface, and set the first connecting seat 4 of the pulley frame 2 vertically upward.

[0041] S2. The first hook lifts the auxiliary boom 1 above the pulley frame 2, so that the first connecting plate 5 is aligned with the first connecting seat 4.

[0042] S3. Move the auxiliary arm 1 to embed the first connecting plate 5 into the first receiving cavity 41 of the first connecting seat 4, and then connect the pin on the first connecting plate 5 and the first connecting seat 4.

[0043] S4. Weld the first welding plate 21 of the pulley frame 2 to the second welding plate 11 of the auxiliary arm 1.

[0044] S5. The second hook lifts the welded main boom 3 and sets the main boom 3 vertically on the support surface; the second connecting plate 7 of the main boom 3 is set vertically upward.

[0045] S6. Move the auxiliary arm 1 connected to the pulley frame 2 above the main arm 3 so that the second connecting plate 7 is aligned with the second connecting seat 6.

[0046] S7. Move the pulley frame 2, embed the second connecting plate 7 into the second receiving cavity of the second connecting seat 6, and then connect the pin on the second connecting plate 7 and the second connecting seat 6.

[0047] S8. Weld the third welding plate 22 of the pulley frame 2 to the fourth welding plate 32 of the main arm 3.

[0048] The above method connects adjacent boom sections 31 through the fifth welding plate 33. One fifth welding plate 33 is set flush with another fifth welding plate 33, which facilitates welding operations. When assembling the auxiliary boom 1 and pulley frame 2, the first connector is embedded into the first connecting seat 4 to achieve quick alignment between the auxiliary boom 1 and pulley frame 2. A connecting pin facilitates a quick connection between the auxiliary boom 1 and pulley frame 2. Therefore, when welding the first welding plate 21 and the second welding plate 11, the auxiliary boom 1 will not swing relative to the pulley frame 2, resulting in good stability and high welding efficiency. When assembling the main boom 3 and pulley frame 2, the second connector is embedded into the second connecting seat 6 to achieve quick alignment between the main boom 3 and pulley frame 2. A connecting pin facilitates a quick connection between the main boom 3 and pulley frame 2. Therefore, when welding the third welding plate 22 and the fourth welding plate 32, the pulley frame 2 will not swing relative to the main boom 3, resulting in good stability and high welding efficiency. Simultaneously, the pulley frame 2 is first placed horizontally on the support surface, thus achieving rapid assembly of the boom, and the assembly method is simple.

Claims

1. A method for rapid assembly of a crane boom, characterized in that: Includes the following steps: S1. Place the pulley frame horizontally on the support surface, with the first connecting seat of the pulley frame vertically upward; S2. The first hook lifts the auxiliary boom above the pulley frame, aligning the first connecting plate with the first connecting seat; S3. Move the auxiliary arm to embed the first connecting plate into the first receiving cavity of the first connecting seat, and then connect the pin on the first connecting plate and the first connecting seat. S4. Weld the first welding plate of the pulley frame to the second welding plate of the auxiliary arm; S5. The second hook lifts the welded main boom and sets the main boom vertically on the support surface; the second connecting plate of the main boom is set vertically upward. S6. Move the auxiliary boom connected to the pulley frame above the main boom so that the second connecting plate is aligned with the second connecting seat; S7. Move the pulley frame to embed the second connecting plate into the second receiving cavity of the second connecting seat, and then connect the pin on the second connecting plate and the second connecting seat. S8. Weld the third welding plate of the pulley frame to the fourth welding plate of the main arm.

2. The method for rapid assembly of a crane boom according to claim 1, characterized in that: The welding of the main boom includes the following steps: A1. Weld the fifth welding plate at the ends of adjacent boom sections that are close to each other; A2. Place adjacent boom sections on a support surface at the same horizontal level; weld the fifth welding plate of one boom section to the fifth welding plate of another boom section, and weld adjacent boom sections together to form the main boom.

3. The method for rapid assembly of a crane boom according to claim 1, characterized in that: This is achieved using a modular boom, which includes a jib and a pulley frame. The pulley frame has a first connecting seat on the side near the jib, and a first receiving cavity in the first connecting seat. The jib has a first connecting plate on the end near the pulley frame, and the first connecting plate is embedded in the first receiving cavity. The first connecting plate and the first connecting seat are connected by a pin. The key feature is that the pulley frame has a first welding plate on the side near the jib, and the jib has a second welding plate on the end near the pulley frame. When the first connecting plate is connected to the first connecting seat, the first welding plate and the second welding plate abut against each other, and the first welding plate and the second welding plate are welded together.

4. The method for rapid assembly of a crane boom according to claim 3, characterized in that: A main boom is also provided on the side of the pulley frame away from the auxiliary boom. The main boom includes two or more boom sections, which are welded together. A third welding plate is provided on the side of the pulley frame near the main boom, and a fourth welding plate is provided on the boom section of the main boom near the pulley frame. The third welding plate and the fourth welding plate are welded together.

5. The method for rapid assembly of a crane boom according to claim 4, characterized in that: A second connecting seat is provided on the side of the pulley frame near the main boom, and a second receiving cavity is provided in the second connecting seat. A second connecting plate is provided on the boom section of the main boom near the pulley frame. The second connecting plate is embedded in the second receiving cavity. The second connecting plate and the second connecting seat are connected by a pin. When the second connecting plate and the second connecting seat are connected, the third welding plate and the fourth welding plate abut against each other.

6. The method for rapid assembly of a crane boom according to claim 4, characterized in that: The ends of adjacent boom sections are respectively provided with fifth welding plates, and one fifth welding plate is welded to another fifth welding plate.

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