Support structure for the dam surface maintenance crane and method for retrieval of the dam surface crane

Abstract

A basket support structure for a dam surface maintenance crane is disclosed. The crane head is equipped with a basket support frame for placing the basket. The basket support frame includes a fixed crossbar, which is fixedly installed on the bottom surface of the crane head. Movable side frames are installed at both ends of the fixed crossbar, and the movable side frames can rotate 90° around the fixed crossbar. Slide grooves are provided on opposite sides of the two movable side frames, and slide frames are installed in the two slide grooves to hold and support the basket. This invention, using the above structure, achieves basket support and fixation in the case of a long boom, effectively preventing basket swaying during crane operation and solving the problem of the basket obstructing the view ahead of the crane.

Description

Technical Field

[0001] This invention relates to the field of dam surface maintenance and construction technology, specifically to a basket support structure for a dam surface maintenance crane and a basket recovery method. Background Technology

[0002] During dam maintenance operations, hoisting equipment is typically used on the dam crest to lower the basket. After the maintenance is completed, the basket is usually directly hoisted to the rear of a truck. Due to the long boom length, the bottom of the basket cannot be supported by the crane, causing significant swaying during crane operation and even collisions with the crane. Therefore, the only solution for placing the basket on a long-boom crane is to disconnect the basket from the boom and then load it onto the crane. This method significantly increases the time required for equipment transfer during maintenance point replacements, impacting operational efficiency. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a basket support structure and basket recovery method for a dam surface maintenance crane. By setting a support structure at the head of the crane, the basket can be supported and fixed in the case of a long boom, effectively avoiding the swaying of the basket during the operation of the crane, and solving the problem of the basket obstructing the view in front of the vehicle.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a basket support structure for a dam surface maintenance crane, wherein the crane head is provided with a basket support frame for placing the basket;

[0005] The suspended platform support frame includes a fixed crossbar, which is fixedly installed on the bottom surface of the crane head. Movable side frames are installed at both ends of the fixed crossbar, and the movable side frames can rotate 90° around the fixed crossbar. Slide grooves are provided on the opposite sides of the two movable side frames, and slide frames are installed in the two movable slide grooves. The slide frames are used to place the supporting suspended platform.

[0006] In a preferred embodiment, the fixed crossbeam is provided with two transverse sliding holes, and a limiting stud is inserted into each of the two transverse sliding holes. The head of the two limiting studs is located above the transverse sliding holes, and the lower ends of the two limiting studs are hinged and fixed to one end of the two movable side frames.

[0007] In a preferred embodiment, airbag deployment swing arms are provided at both ends of the fixed crossbeam facing the front of the crane head. The lower part of the airbag deployment swing arms is hinged to the fixed crossbeam by a pin. Two airbag mounting boxes are provided on the side wall of the fixed crossbeam in the middle of the two airbag deployment swing arms. Airbags are placed in the airbag mounting boxes. The airbags are fan-shaped and one side of each airbag is fixedly connected to the side of the adjacent airbag deployment swing arm.

[0008] In a preferred embodiment, a three-way air duct is installed between the two airbag mounting boxes, and the two air outlets of the air duct pass through the end faces of the two airbag mounting boxes and are connected to the airbags inside the airbag mounting boxes.

[0009] In a preferred embodiment, the carriage is a rectangular frame with a connecting ring installed at the bottom of the side parallel to the fixed crossbeam and close to the fixed crossbeam. A traction motor is installed at the bottom of the crane head, and a traction rope is wound on the drive shaft of the traction motor. One end of the traction rope is detachably connected to the connecting ring via a hook.

[0010] The method for recovering the suspended platform based on the suspended platform support structure of the dam surface maintenance crane described above is characterized by the following steps:

[0011] 1) After the crane completes its work, adjust the crane boom to face the crane head so that the basket is directly in front of the crane;

[0012] 2) Release the rope and lower the suspended platform onto the slide frame to achieve support and fixation of the suspended platform;

[0013] 3) Start the motor to retract the traction rope, so that the traction rope pulls the slide to move on the movable side frame;

[0014] 4) After the basket is moved onto the carriage and contacts the airbag, the basket retrieval operation is completed.

[0015] In the preferred embodiment, before the suspended basket is retrieved, the carriage is deployed and arranged, specifically including the following steps:

[0016] 1) Move the movable side frame along the transverse sliding hole so that the movable side frame located at the bottom of the fixed cross frame moves laterally to both ends of the fixed cross frame;

[0017] 2) Rotate the movable side frame 90° until it is perpendicular to the crane head;

[0018] 3) During the rotation of the movable side frame, the airbag deployment lever is pushed to rotate from a horizontal state to a vertical state and the airbag is deployed;

[0019] 4) Install a slide car at one end of each of the two movable side frames, and hang the hook at one end of the traction rope on the traction motor on the connecting ring;

[0020] 5) Inflate the airbag through the air delivery device and air pipe;

[0021] 6) Perform the basket retrieval operation.

[0022] In a preferred embodiment, when the crane performs hoisting and maintenance work on the suspended platform, the slide is folded up by reversing the steps of the slide deployment method.

[0023] The basket support structure and basket recovery method for the dam surface maintenance crane provided by this invention have the following beneficial effects by adopting the above structure and solution:

[0024] (1) It solves the problem of the basket being unsupported due to the excessive length of the boom, and avoids the problem of the basket shaking and colliding during the crane's operation;

[0025] (2) It shortens the time spent on replacing maintenance points and eliminates the need for repeated disassembly and assembly operations between the suspended platform and the boom;

[0026] (3) It avoids the problem of obstructed vision caused by placing the basket in front of the vehicle;

[0027] (4) When the basket is removed, the support frame can be retracted to avoid the support frame being in the extended state, which could cause safety hazards when the crane is in motion. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0029] Figure 1 This is a schematic diagram of the crane head structure of the present invention.

[0030] Figure 2 This is a schematic diagram of the overall structure of the present invention.

[0031] Figure 3 This is a schematic diagram of the airbag in the deployed state of the present invention.

[0032] Figure 4 This is a schematic diagram of the structure of the airbag in the retracted state of the present invention.

[0033] In the diagram: 1. Crane; 2. Suspended basket; 3. Suspended basket support frame; 4. Fixed cross frame; 5. Movable side frame; 6. Slide frame; 7. Lateral sliding hole; 8. Limiting stud; 9. Airbag deployment swing arm; 10. Airbag mounting box; 11. Air duct; 12. Connecting ring; 13. Traction rope; 14. Reinforcing rod; 15. Traction motor; 16. Detailed Implementation

[0034] Example 1:

[0035] like Figure 1-3 In the present invention, a basket support structure for a dam surface maintenance crane is provided, wherein the head of the crane 1 is provided with a basket support frame 3 for placing the basket 2;

[0036] The suspended basket support frame 3 includes a fixed crossbeam 4, which is fixedly installed on the bottom surface of the head of the crane 1. Movable side frames 5 are installed at both ends of the fixed crossbeam 4. The movable side frames 5 can rotate 90° around the fixed crossbeam 4. Slide grooves 501 are provided on the opposite sides of the two movable side frames 5. Slide racks 6 are installed in the two movable slide grooves 501. The slide racks 6 are used to place the support basket 2.

[0037] In a preferred embodiment, the fixed crossbeam 4 is provided with two transverse sliding holes 7, and a limiting stud 8 is inserted into each of the two transverse sliding holes 7. The head of the two limiting studs 8 is located above the transverse sliding holes 7, and the lower ends of the two limiting studs 8 are hinged and fixed to one end of the two movable side frames 5.

[0038] In a preferred embodiment, the fixed crossbeam 4 is provided with airbag deployment swing arms 9 at both ends on the side facing the front of the crane 1. The lower part of the airbag deployment swing arms 9 is hinged to the fixed crossbeam 4 by a pin. Two airbag mounting boxes 10 are provided on one side wall of the fixed crossbeam 4 in the middle of the two airbag deployment swing arms 9. An airbag 11 is placed in the airbag mounting box 10. The airbag 11 is fan-shaped and its side is fixedly connected to the side of the adjacent airbag deployment swing arm 9.

[0039] In a preferred embodiment, a three-way air duct 12 is installed between the two airbag mounting boxes 10. The two air outlets of the air duct 12 pass through the end faces of the two airbag mounting boxes 10 and are connected to the airbags 11 inside the airbag mounting boxes 10.

[0040] In a preferred embodiment, the carriage 6 is a rectangular frame, with a connecting ring 13 installed at the bottom of the side parallel to the fixed crossbeam 4 and close to the fixed crossbeam 4. A traction motor 16 is installed at the bottom of the crane head 1, and a traction rope 14 is wound around the drive shaft of the traction motor 16. One end of the traction rope 14 is detachably connected to the connecting ring 13 via a hook.

[0041] Example 2:

[0042] A method for recovering the basket of a dam surface maintenance crane based on the basket support structure described in Example 1 includes the following steps:

[0043] 1) After crane 1 completes the operation, adjust the boom of the crane to face the head of crane 1 so that the basket 2 is located directly in front of crane 1;

[0044] 2) Release the rope and lower the suspended basket 2 onto the slide 6 to achieve support and fixation of the suspended basket 2;

[0045] 3) Start the motor to retract the traction rope 14, so that the traction rope 14 pulls the slide 6 to move on the movable side frame 5;

[0046] 4) After the basket 2 is moved onto the slide 6 and contacts the airbag 11, the basket 2 is retrieved.

[0047] During the above operation, the airbag 11 is used to prevent the head of the crane 1 from colliding with the basket 2 during its recovery, thus achieving the purpose of cushioning.

[0048] Example 3:

[0049] Based on Example 2, before the suspended basket 2 is retrieved, the slide 6 is deployed and arranged, specifically including the following steps:

[0050] 1) Move the movable side frame 5 along the transverse sliding hole 7 so that the movable side frame 5 located at the bottom of the fixed cross frame 4 moves laterally to both ends of the fixed cross frame 4;

[0051] 2) Rotate the movable side frame 5 90° until it is perpendicular to the head of the crane 1;

[0052] 3) During the rotation of the movable side frame 5, the airbag deployment lever 9 is pushed to rotate from a horizontal state to a vertical state and the airbag 11 is deployed;

[0053] 4) Install a slide 6 at one end of each of the two movable side frames 5, and hang the hook at one end of the traction rope 14 on the traction motor 16 on the connecting ring 13;

[0054] 5) Inflate the airbag 11 through the air delivery device and the air pipe 12;

[0055] 6) Perform the retrieval operation of basket 2.

[0056] A schematic diagram of the airbag in its deployed state is shown below. Figure 3 As shown.

[0057] A schematic diagram of the airbag in its retracted state is shown below. Figure 4 As shown.

[0058] Example 4:

[0059] Based on Example 3, when the crane 1 performs hoisting and maintenance work on the basket 2, the slide 6 is folded up by reversing the unfolding method of the slide 6.

[0060] When the basket 2 is unloaded or the crane 1 is not used as a lifting equipment, the support frame 3 can be retracted to avoid affecting the normal operation of the crane 1.

[0061] The above-mentioned solution disclosed in this invention effectively solves the problem that the basket in a long boom crane cannot achieve effective support. It eliminates the need to disassemble the basket and uses a foldable and unfoldable support frame as the support mechanism. This solves the problem of collision between the basket and the crane head during the lowering process and also solves the problem of obstructed driver's view caused by the basket being too far from the crane head during the support process.

Claims

1. A basket support structure for a dam face access crane, characterised in that: The crane (1) head is provided with a basket support frame (3) for placing a basket (2); The basket support frame (3) comprises a fixed cross frame (4) fixedly installed at the bottom of the crane (1) head, and movable side frames (5) are installed at both ends of the fixed cross frame (4); the movable side frames (5) can rotate 90° about the fixed cross frame (4); sliding grooves (501) are arranged on the opposite sides of the two movable side frames (5); sliding frames (6) are installed in the two sliding grooves (501); and the sliding frames (6) are used for placing and supporting the basket (2). Air bag unfolding swing rods (9) are arranged at both ends of the side of the fixed cross frame (4) facing the front of the crane (1) head; the air bag unfolding swing rods (9) are hingedly connected between the lower portions and the fixed cross frame (4) through pin shafts; two air bag installation boxes (10) are arranged on the side wall of the fixed cross frame (4) on the middle portions of the two air bag unfolding swing rods (9); air bags (11) are placed in the air bag installation boxes (10); the air bags (11) are fan-shaped, and one side of each air bag (11) is fixedly connected with the side of the air bag unfolding swing rod (9) close to the air bag (11).

2. The basket support structure of a dam face inspection hoist as claimed in claim 1, wherein: The fixed cross frame (4) is provided with two transverse sliding holes (7); one limiting stud (8) is respectively arranged in each transverse sliding hole (7); the heads of the two limiting studs (8) are located above the transverse sliding holes (7); and the lower ends of the two limiting studs (8) are hingedly connected with one end of each movable side frame (5).

3. The basket support structure of a dam face inspection hoist as claimed in claim 1, wherein: A three-way air guide pipe (12) is arranged between the two air bag installation boxes (10); the two air outlet ends of the air guide pipe (12) respectively pass through the end faces of the two air bag installation boxes (10) and are connected with the air bags (11) in the air bag installation boxes (10).

4. The basket support structure of a dam face inspection hoist as claimed in claim 1, wherein: The sliding frame (6) is a rectangular frame; a connecting ring (13) is arranged on the side bottom of the sliding frame (6) which is parallel to and close to the fixed cross frame (4); a traction motor (16) is arranged at the bottom of the crane (1) head; a traction pull rope (14) is wound around the driving shaft of the traction motor (16); and one end of the traction pull rope (14) is detachably hung between the connecting ring (13) and a hook.

5. The method of recovering the basket of the basket support structure of the dam face inspection crane according to any one of claims 1 to 4, characterized in that The method comprises the following steps: 1) After the crane (1) completes work, the crane is adjusted so that the lifting arm faces the crane (1) head, and the basket (2) is located in front of the crane (1); 2) The rope is released, the basket (2) is placed on the sliding frame (6), and the basket (2) is supported and fixed; 3) The motor is started to recover the traction pull rope (14), so that the traction pull rope (14) pulls the sliding frame (6) to move on the movable side frame (5); 4) After the basket (2) contacts the air bag on the sliding frame (6), the basket (2) recovery operation is completed.

6. The method of claim 5, wherein the method further comprises: Before the basket (2) is recovered, the sliding frame (6) is unfolded and arranged, which comprises the following steps: 1) The movable side frame (5) is moved along the transverse sliding hole (7), so that the movable side frame (5) located at the bottom of the fixed cross frame (4) is moved transversely to both ends of the fixed cross frame (4); 2) The movable side frame (5) is rotated 90° to be perpendicular to the crane (1) head. 3) During the rotation of the movable side frame (5), the air bag unfolding swing lever (9) is rotated from the horizontal state to the vertical state and the air bag (11) is unfolded; 4) A sliding frame (6) is installed at one end of the two movable side frames (5), and a hook at one end of a traction rope (14) of a traction motor (16) is hung on a connecting ring (13); 5) The air bag (11) is inflated through a gas feeding device through a gas guide pipe (12); 6) The gondola (2) is recovered.

7. The method of claim 6, wherein the method further comprises: When the crane (1) performs the gondola (2) hoisting maintenance operation, the sliding frame (6) folding method is used in reverse operation steps.

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